The World of Cyberspace and its Effects on Social...

Many studies have been conducted on the various features of cyberspace, its connection to social media, and how it influences professional, intimate, and cordial relationships. Although many spectators are convinced that society’s frequent use of cyberspace has taken a turn down the wrong path, cyberspace has opened up many opportunities for professional relationships to establish, such as the relationship between Facebook usage and an increase in work values in Taiwan (Lin, Le, Khalil, Cheng, 2012). However, contradictory results suggest that heavy use of the internet by people may be a factor of producing negative social well-being (Merkle Richardson, 2000). In order to fully understand how social cyberspace affects everyday†¦show more content†¦Everyday usage of cyberspace can affect the social well-being of all who use it as it hinders real world communication among individuals. Relevant Research Internet The usage of the Internet, one well known aspect of cyberspace, has received very mixed reviews since it became a dominant source of information in society. The rapid growth of the internet has allowed for people to increase their circle of friends and associates and maintain contact with people all across the world. Internet usage, in relation to social media sites has allowed for interpersonal, professional, and familial relationships to develop and sustain over time. While in college, many students conduct their work online and use the internet to interact with their peers and professors. Social interactions among students at large, diverse campuses occur almost immediately as students become grouped based on society’s perception of them. Tynes, Rose, Markoe (2013) conducted a study that evaluated online racial climate and how it is perceived by African American and European American students at a university in the United States. Campus racial climate is described as beh aviors, attitudes, perceptions, and expectations surrounding the race and ethnicity of members at the university (Tynes, Rose, Markoe, 2013). African American students are more likely toShow MoreRelated Internet - How Real is Cyberspace? Essay1102 Words   |  5 PagesHow Real is Cyberspace? The term ‘Cyberspace’ was first coined by William Gibson and defined as â€Å"a consensual hallucination experienced daily by billions of legitimate operators† (Gibson 1984, 67). This term has come to shape the evolving universe that encompasses today’s society as Cyberspace is a realm which exists on the Internet and is becoming immensely used globally. â€Å"Online experiences challenge what many have traditionally called identity, as on the Internet many people recast identityRead MoreSocial Media And Its Effects On Society1287 Words   |  6 PagesIt all started with social media, around since the 1960’s and started to thrive in the late 1990’s, that humans began to interact through cyberspace and changed human relationships forever. As the Internet grows to be further accessible to a number of households and public areas worldwide, the greater the immensity its aftereffects have on our lives as well. However, the more the Internet bec omes habitual for humans, the more people become aware of the profound negative influences that come alongRead MoreThe Effects Of Trauma On Children And Professional Adults Essay882 Words   |  4 PagesBased on the Perry reading that outlines the effects of trauma on children (2003) that outlines the alarm reactions, responses to threat, post-traumatic stress, emotional memory impact, numbing, avoidance, hyperarousal and disassociation responses to trauma, it is quite evident that mindfulness would be quite helpful to help youth process their emotions and experiences in a healthy and productive manner. Since traumatic experiences have such a large impact on one’s psychological, emotional and physicalRead MoreThe Cyberspace Will Affect National Security Essay1444 Words   |  6 Pagesthe last two decades cyberspace has been defined as the fifth battleground’ for international relations, with the aspects of cyber war, cyber terrorism, and cybercrime as some of the la rgest threats to the security of the national and international community. (Popović, 2013) With this ‘fifth battleground’ of the cyberspace thrown into the international battlegrounds of old, its effectiveness and effect on the both the modern state and the international bodies of the world, posing the question ofRead MoreThe Internet From A Social and Communications Perspective Essay1720 Words   |  7 Pagesof the internet 6.2 World dependency ïÆ'Ëœ Organizations and corporations/ Commercial Internet ïÆ'Ëœ Education ïÆ'Ëœ Mass Share of the information ïÆ'Ëœ Politics ïÆ'Ëœ Safety (cybercrime, the web economy) 6.3 Impact on personality ïÆ'Ëœ Specifics ïÆ'Ëœ Identity, Anonymity and Role Modeling ïÆ'Ëœ Internet addiction ïÆ'Ëœ Personality conflicts (and reality vs. virtuality) ïÆ'Ëœ Degradation of personality, mental problems) ïÆ'Ëœ Multitasking 6.4 Social characteristics ïÆ'Ëœ Variety of communication ïÆ'Ëœ Social networks ïÆ'Ëœ Internet cultureRead MoreEssay On Cyber Espionage In China750 Words   |  3 Pagesskepticism. It’s the first agreement of any substance on the issue, which is a hopeful sign. China doesn’t enjoy a reputation of carefully adhering to international agreements and there is doubt about whether the agreement will have any practical effect on China’s behavior. Since the early 2000s, cyber espionage issues have increasingly strained U.S.-China relations. All countries engage in espionage, but China is one of the largest and most persistent perpetrators (as is, to be fair, the UnitedRead MoreSocial Media Has Changed Communication1100 Words   |  4 Pages â€Å"Social media has changed how people communicate and interact, how marketers sell products, how government reaches out to citizens, even how companies operate (Kirkpatrick, n.d.).† As the prevalence of social media continues to rise, consumers are recognizing ways in which social media can direct them to better sources of purchasing. Social media sites like Twitter, LinkedIn, and Facebook have allowed businesses to market their products and scout for employees. As a result, businesses are nowRead MoreCyber Bullying And The Internet1324 Words   |  6 Pagestoday’s youth is growing up in a technological age which makes the already tortuous period of adolescence even m ore painful. During adolescence we are naturally influenced by others, and constantly, obsessively comparing ourselves to everyone else. In cyberspace the bully has an accessible, almost effortless outlet that, if he so chooses, makes him anonymous. By concealing his identity, unless someone is a cyber-hacking wizard, the victim of his bullying won’t know where it is coming from. This allows himRead MoreFinding Clarity In The Obscurity Of â€Å"Why Privacy Matters†.1283 Words   |  6 Pagesobscurity of â€Å"Why Privacy Matters† In his essay â€Å"Why Privacy Matters† from The Wilson Quarterly, Jeffrey Rosen offers a compelling account of the harmful effects of eradicating our privacy. Rosen ventures into several different fields affected by the ever-growing intrusion of our privacy, offering a rich compendium of illustrations from the real world. From Monica Lewinsky’s fate under her investigation, to a Charles Schwab employee, Rosen offers a prolific arsenal of incidents where the dignity of privacyRead MoreExamples Of Hiding In Plain Sight1398 Words   |  6 Pagesconstituting, in effect, a separate â€Å"personality.† These online personalities may be a part of one’s authentic self or a separate identity altogether. In The Times article, Internet trolls ignore social rules: Expert: Online disinhibition effect means many people feel invincible online, the anonymous author states, â€Å"This is your brain in cyberspace: while in warp-speed from forum to message board to a we bsite, it takes on false identities, speaks with impunity, acts without visible effect and escapes

Role of the Learning Mentor Free Essays

string(116) " 2020 Review presenting a vision to provide pupils with personalised learning offering a more adaptable curriculum\." A 2, 500 word assignment which examines the role of the learning mentor and analyses the strategies used in supporting science, evaluating the impact on pupils’ learning. This essay will explore and evaluate the role, the responsibilities and the purpose of the learning mentor. It will highlight and review strategies used in schools today to support children’s education, assisting them to develop skills and achieve their full potential. We will write a custom essay sample on Role of the Learning Mentor or any similar topic only for you Order Now The learning mentor has a large range of duties which require the ability to encourage social inclusion, collaborate with external agencies for specialist support and expand care to families and carers. Responsibilities also include the contribution to the assessment of pupils, the transition and pastoral care of vulnerable students and to identify and remove barriers to learning that some young people are faced with during their time in education. All of these areas will be considered and analysed. I will thoroughly examine current practice, theory and reflect upon my own development. Whilst examining the role of the learning mentor, I will be specifically looking at science and how it is taught and supported in schools today. My aim is to highlight the importance of the learning mentor and the impact they have on a child’s achievement and success. It will also indicate how the learning mentor’s holistic approach builds self confidence, a sense of emotional belonging and overall creates the best conditions for students to flourish academically as well as personally. Consequently, this will allow me to develop and improve my own practice and professional progression in the future. Education has not always recognised the holistic needs and development of children. However, over the years, the education system has seen a considerable amount of changes. It has been revolutionalised, transforming teaching from learning by rote to a multisensory, child centred, personalised education. This is due to many factors such as the development of technology, changes in society, values and attitudes, the recognition of children with additional needs and the implementation of learning mentors and support staff. So, when were learning mentors first introduced into schools and why? In 1999, as an out come from the 1997 White Paper, the Excellence in Cities (EiC) initiative was launched by the government to raise standards of attainment and was first piloted in disadvantaged, inner-city schools. As stated in Excellence in Cities: The National Evaluation of a Policy to Raise Standards in Urban Schools 2000-2003 (2005), Britain was in need of ‘inclusive schooling that recognises the different talents of all children and delivers excellence for everyone’. To achieve this objective, EiC implemented a gifted and talented programme, to provide extra support for 5-10 per cent of pupils in each school. Learning Support Units (LSU’s) were also introduced to provide intervention teaching and support programmes for difficult or vulnerable students and learning mentors were created to help students overcome educational or behaviour problems, ensuring that schools were inclusive of all. As highlighted by M. K Smith (1999) schools were able to utilise Learning Mentors for different matters according to their individuality, however the government did set out for the leaning mentor, four main objectives. These core beliefs from EiC are explained in Good Practice Guidelines for Learning Mentors (DFES 2001). Firstly, the learning mentor should have high expectations for every pupil, meeting the needs of all and taking an individualised approach to teaching and learning, ensuring barriers are removed so children can aspire regardless of the difficulties they may come up against. Barriers to opportunities could include family problems, bullying, low self esteem and poor social skills. The learning mentor must also establish good working relationships with pupils, parents, the community and other outside agencies. By creating a network, schools are able to work collaboratively to promote diversity, share good teaching practice and enhance performance throughout the area. The role of the learning mentor was not only introduced to improve the progress of low ability students, following a report by J. Freeman in 1998 which investigated research on the teaching and learning of high ability children, the government recognised that ‘provision for the highly able was not satisfactory’ and that children who are gifted and talented ‘have as much of an entitlement to have their needs addressed’ OFSTED (2001). Therefore, learning mentors provide extended learning opportunities to pupils to assure the prevention of a ‘glass ceiling’ that could potentially restrict performance. Besides from the objectives set out by the government, the role of the learning mentor is complex and extensive. Good Practice Guidelines for Learning Mentors (DFES 2001) makes clear that they are disciplinarians, nor classroom assistants. They are an active listener, a role model, a guide who negotiates targets and supports pupils, carers and parents whilst remaining reliable, non judgemental and realistic. R. Rose and M Doveston (2008:145) defines mentoring as ‘learning within a social context’ with learning mentors recognising ‘the necessity to ensure that students feel both comfortable with and in control of the learning process. ’ This social collaboration is clearly influenced by Vygotsky (1962) and his theory of social constructivism. A key point of Vygotskys theory is the Zone of Proximal Development (ZPD). As explain by Oakley (2004), the ZPD is the gap between a child’s actual level and the level of which the child could achieve with the guidance from an experienced adult, in this case, the learning mentor. This adult intervention can also be linked to the idea that Bruner put forward, labelling this type of assistance as ‘scaffolding’. A concept where a more able person provides guidance and support until the learner becomes independent. When evaluating the helping relationship, G. Egan’s theory takes a holistic, person centred approach, resulting in the ability to ‘develop more options in their lives’, Egan (1990:7). The changes brought about by EiC have shaped the way education system is today, with teachers and learning mentors taking on a child centred, holistic, inclusive and personalised approach. In 2006, the Department for Education and Skills published the 2020 vision: report of the Teaching and Learning in 2020 Review presenting a vision to provide pupils with personalised learning offering a more adaptable curriculum. You read "Role of the Learning Mentor" in category "Essay examples" The 2020 vision: report of the Teaching and Learning in 2020 Review (2006:3) points out that ‘When taken as a whole across the education system, in all schools, for all pupils, we think personalising learning has the potential to transform education. ’ The Assessment for Learning Strategy 2008 explains the importance of assessment in education. It aims to ensure every child is aware of their performance and how to improve allowing them to become independent initiators of their own learning and by informing parents and carers of assessment outcomes, children are also supported at home. In schools, assessment for learning happens constantly by teachers, learning mentors, teaching assistant and peers. Examples of formative assessment are precise learning objectives, peer and self assessment and immediate verbal or written feedback. Summative assessment gives a broader view of improvement and uses standardised tests. Assessment is essential for schools to plan the next steps for pupils in order to close the gap in attainment and is vital to effective personalised teaching and learning. In 2008, OFSTED evaluated the impact of assessment for learning on inclusion identifying that it is beneficial to pupils with special educational needs (SEN), providing pupils with the opportunity to discuss, question, explore and review ‘builds an understanding of what success looks like and how to apply skills’ OFSTED (2008:21). Assessment for learning therefore clearly goes hand in hand with personalised learning allowing children, teachers, learning mentors and parents to reflect, evaluate and advance. Subsequently, as indicated by Capel and Gervis (2009: 135) when feedback is given in conjunction with praise, pupils are more motivated to continue to make effort with a positive approach to the activity. Maslow (1970) made this very argument with his hierarchy of needs theory explaining that in order to feel the need to fulfil one’s potential, other needs such as self esteem or love and belonging must be met first. Aspects of Maslow’s theory can also be seen in government frameworks used in schools. Although currently under review, Every Child Matters (2003) has five outcomes, areas which are central to the learning mentors work. For example for children to ‘be healthy’, the learning mentor may be involved with setting up breakfast clubs, arrange sporting activities or promote hea lthy dinners. As for ‘staying safe’ they might organise police visits, implement a listening room or create an anti bullying initiative. For children to ‘enjoy and achieve’ they may perhaps provide one to one intervention to support achievement, have homework clubs and offer assistance for transition. The learning mentor could also arrange community work, school council groups and circle time, giving pupils the opportunity to ‘make a positive contribution’. And to allow children to achieve economic well-being, the learning mentor may possibly organise work experience, seek career advice and work with parents and other outside agencies. As a teaching assistant, my role differs from that of the learning mentor. The responsibitlies of the teaching assistant, although still aim to support pupils to reach their full potential are not as broad at the support offered by a learning mentor and is approached from a somewhat different angle. This is highlighted in a video at teachermedia. co. uk 2 outlining the differences between these two roles. From my experience, teaching assistants are usually classroom based; however work together with teachers and learning mentors to ensure the best type of individual support can be provided for all. With experience of supporting and teaching the national curriculum in year 3, I have observed the learning and development of many children. One subject which always usually requires a range of support strategies is science. Science is not just the teaching of facts and theories. As stated in the report, Primary Science (2003), teaching science equips pupils with indispensable skills that are transferable throughout different parts of the curriculum. The report explains how the main aim of primary science is to ‘stimulate pupil’s curiosity in the world around them and encourage critical and creative thinking’ (2003:1). The National Curriculum (1999) sets out the statutory programme of study for science, the four main areas of teaching are, life processes and living things, physical processes, materials and their properties and scientific enquiry. For pupils to achieve in science there is a balance needed between teaching factual knowledge and the skills of scientific enquiry. For example, students must be given the opportunity to address questions scientifically, plan and carrying out experiments, build on previous knowledge and interests, evaluate and discuss ideas. The teaching of science is essential as it promotes learning across the curriculum including spiritual, moral, social and cultural development, key skills, thinking skills, communication, application of number, working with others and information technology. ‘Successful Science’, a report by OFSTED (2011) found that the impact of good teaching could be seen when more practical science lessons were taught, when pupils were involved in peer and self-evaluation and when the pupils were given the opportunity to develop the skills of scientific enquiry by taking part in decision-making, discussion and research. Teaching was seen to be more engaging when the science that they were learning about had relevance to their lives and experiences. When I was asked to plan and teach block of lessons on magnets to a group of middle ability year 3 children, it was important to take into account many factors. How much science motivates children? What teaching strategies and theories to use? Would it need to be differentiated and how could I ensure progress had been made? The plan involved a range of multisensory activities such as testing magnetic materials around the school, finding the strongest magnet, watching videos, labelling the irections of force. Such activities were tailored for multiple intelligences, Gardner (1983) and also exercised both right and left brain skills ensuring the engagement and motivation of both boys and girls, Cheminais (2008). The lessons had clear, precise learning objectives as research shows that this works as classical conditioning, the action of providing a lesson ob jective will result in the learner’s response in knowing what to expect to learn, Gange and Medker (1996). Theories that influenced the teaching strategies used include both constructivists and social constructivist teaching. For example, for the pupils to develop their scientific enquiry skills, the activities were designed to allow them to construct their own learning through experiences. This meant that by planning and carrying out an experiment to find the strongest magnets, the students gained the knowledge that the strongest magnet is not always the largest magnet. Alfrey (2003) explains that Piaget thought that children have to assemble their own comprehension and ‘assimilate’ from such experiences, creating mental structures called ‘schemas’. Piagetian theory views the role of the adult as someone who is to provide a rich, stimulating environment for children to naturally discover, explore and actively build their own schemas through stage appropriate activities and tasks that will eventually support assimilation and accommodation. Some aspects of social constructivist teaching methods were used in the lesson, for instance the pupils were collaboratively seeking answers, and they shared their ideas, had group discussion and developed their listening skills. During the session the children asked lots of questions, this again showed just how involved the children were and how they were actively seeking answers and explanations. Talking Science Pedagogy (2008) summarises five teaching models used in science. Direct interactive teaching was used in the lessons when the magnets were first introduced to the children. Scientific vocabulary was taught such as north and south pole, magnetic field, attracts and repel. When the children learnt that opposites attract and the same repel, we used girls and boys to create an analogy in order to help them to picture it. During the lesson some issues did arise that could have potentially affect learning. The children had their own presumptions about magnets which lead to misconceptions. To identify these, the students were asked to discuss what they already knew about magnets, and then create a mind map with the findings. These included, ‘they stick to stuff’, ‘they stick to anything metal’ and ‘big magnets are strongest’. . How to cite Role of the Learning Mentor, Essay examples

Contemporary Social Issues free essay sample

The definition of health differs from one layman to another. These differences in definition could be attributed to age, culture, gender, parental upbringing and other influences on ones’ perception of health. The United States perception of health is influence by the biomedical model of health. This biomedical health and diseases views disease as being a result of a specific, identifiable cause originating inside the body (Matsumoto amp; Juang, 2004). These causes are commonly called pathogens which could be anything from vital to bacterial influences as well as others. Treatment of disease under this model is then dealing with the pathogens that are the root of the problem. Therefore, according to this model, a person is considered healthy if he or she is free from disease. In many Asian cultures, a good balance between self and nature is viewed as an important part of health. Many of these cultures’ definitions of health differs from biomedical model as they subscribe to the belief that good health is not only due to the absence of negative states but is based on the principles of ‘yin’ (negative energies) and ‘yang’ (positive energies). A balance between these energies results in good health and an imbalance will cause otherwise. However, this concept of balance creating good health is increasingly being accepted by Americans and elsewhere in the west as the lack of positive health states in the biomedical model deems it incomplete or insufficient in these modern times. In Malaysia’s population which is made up of many different cultures such as the Malay, Chinese and Indian cultures, a similar pattern of balance between the self and the environment is key in the definition of health. More than 50 years ago, the World Health Organization, representing 61 countries at an International Health Conference, developed a definition of health as †a state of complete physical, mental and social well being, and nt merely the absence of disease or infirmity†. (World Health Organization, 1948). This definition is generally accepted in many countries until today. According to the World Health Organization (2010), the life expectancy at birth for Malaysian males or females in 2010 is 69/74 years old. This show an increase since 2003 where the life expectancy for males/females was 62/65 years old. In comparison, it seems the overall health, if measured by life expectancy, is becoming better. There are few factors which could affect health in Malaysia. One of the major factors is the lifestyle and behavior of the people. This consists f diet, exercise or activity levels, health related behaviours such as smoking and alcohol use and als the stress that comes with everyday life. The health system in Malaysia on an community level focuses more on prevention which mainly means changes in lifestyle and behaviours. For instance the ‘Tak Nak’ campaign is an anti-smoking campaign organized recently by The Ministry of Health in Malaysia. This campaign aims to prevent increasing prevalence in smoking in the community, especially amongst the youth. According to Info shat (n. d. ), the information portal website for the Ministry of Health Malaysia, almost 30% of all teenage boys in Malaysia between the ages of 12 and 18 have picked up smoking . Amongst teenage girls smoking prevalence was 4% in the year 2000 and has increased to 8% by the year 2004. This in turn must contribute to the increase in certain chronic disease such as the 17% increase in prevalence per year in lung cancer. A boy influence in life style and behavior differences is culture itself. For example the more the culture condones the behavior of smoking; the more likely people are to pick the habit. Similarly the more a culture condones or rather, prefers women to be overweight, it is more likely the women in that community will be overweight. These preferences of curse stem from a deeper belief or stereotype in these communities that the wealthier one o\is, the larger they are. In other cultures however, the exact opposite would be the truth. The wealthier one is, they tend to become thinner. In a study conducted by Cogan, Bhalla and Seta-Dedeh and Rothblum (1996) as cited in Matsumoto and Juang (2204), university students from Ghana and the United States were asked to complete a questionnaire about their weight, frequency of dieting, social activities, perception of ideal bodies, disordered eating and stereotypes of thin and heavy people. They found that Ghanians were more ikely to rate larger body sizes as ideals and Americans, especially females were more likely to have dieted. This shows that differences in culture causes Massive differences in lifestyle and behaviours, in this case, eating behavior, overweight or having an eating disorder is detrimental to one’s health, in the above example. Another factor that effects that affects health is attitudes and beliefs on health by the community. These include definitions of health, attributions about disease casually, treatment compliance, help seeking behaviours and others. We would speculate then that the acculturation process brought about by modernization in Malaysia has affected the health system positively and in turn contributed to the increased age in life expectancy from 2003 to 2010. This may include better medical facilities, more programs, that not only reach out to those in urban areas but also to those in rural areas such as awareness campaign, immunization and basic health information, such as effective hand washing. Even the dissemination of the small piece of information, such as how to effectively wash hands, if applied well, can have visibly major impacts on the reduction of spread of diseases. As I have described in the first few paragraphs, different cultures have different definitions of health. That being said, it would be logical to think that attributions to disease causality and treatment compliance would also differ from culture to culture. What maybe accepted as a disease caused by pathogens by western medicine, might be viewed as an imbalance of energies within oneself or the effects of spirits on one’s body in another culture. According to Al-Krenawi and Graham (2000) as cited in Matsumoto and Juang (2004), a study done by Arab Americans found that utilizing mental health services maybe stigmatizing especially for women which could then damage their marriage ability or increase likely hood of separation or divorce. According to Pania Gua (1998) as cited in Matsumoto and Juang (2004), the cause of mental disturbances attributed to evil spirit and the cur lies within the chrch and not by seeking mental health professional’s help in Latino communities. For this reason, health and medical health is different. Countries also assimilated in modern medicine. Some types of indigenous healings are Ayurweda, Reike, Acupuncture and so on. This is widely accepted as a culturally sensitive way to approach treatment for different cultures. This also increases the people’s belief in treatment, increasing treatment compliance. In Malaysia, according to Azhar and Vamra (2000), religion is incorporated into psychotherapy. His is done by integrating prayers and versus from the â€Å"Koran† into techniques of psychotherapy, making it more relevant to the culture. That is how attitudes and beliefs of different cultures can sffect their health. The next factor that deserves attention for affecting health care systems. In Malaysia, the halth care system is mainly under the responsibility of the Ministry of Health Malaysia. It consists of two branches that co-exist; the government health care system and the private healthcare system. The government hospitals are partly subsidized by the government making visiting the doctor, getting medication and treatment as well as surgical operations cheaper than it is in the private centers. However, this also means lower pay for the doctors working in these hospitals compared to those working in private sectors. Measures to ensure there are enough medical staffs for the government hospitals are taken by making it compulsory that all Malaysian who wish to practice medicine in Malaysia after their studies must first undergo 3 years of working in the public sector before they can practice in Malaysia freely. However, statistics from Nation Master (2010) show that in the year 2000, the ratio of physicians to the population is 0. 7 per 1000 people. That shows a shortage in the medical workforce. Medical doctors from foreign countries are brought to fill the positions. As far as government aided hospitals go, there is some form of inequality in who gets the priority. Government servants are given top priority, especially those of higher rank, by getting free treatment and being attented to first before the other patients. In terms of being prepared for threats of influences diseases, Malaysia has been through quite a bit, enough t makes sure they are prepared to handle the next one coming. Ever since the Nipah virus swept the country, the Ministry of Health has patched up and created a better, more efficient system which was able to handle the ‘SARS’ situation as well as the ‘H1N1’ bird flu and currently still in progress eradicating the H1N1 virus. One major issue that Malaysia as well as other countries would to be able to cater to the baby boomer generation as they age. These baby boomers, when older would make up the Golden Boomers. The Golden Boomers era would begin in 2011. This mean hat there would be a lot more old age adults than is in a normal proportion of the population. The country would then need to increase the availability of facilities for the elderly, which would include the medical facilities because with age comes the deterioration of health. Malaysia and other countries need to gear towards having the capacity and the ability to handle to size of geriatric population and the health issues that come along with the situation comes. Health then releases on an interplay between these factors, lifestyles and behaviours, attitudes and beliefs, the medical health care system and also other factors such as the environment. Global warming and unpredictable changes in weather, with extreme hot and cold weather can cause damage to the body systems as well as change the delicate balance of the ecosystem. Many different types of bacteria and viruses flourish in hot weather causing new waves of infectious diseases to be spreading vastly across the continents. With natural disasters become more savage, unpredictable and frequent than before, many diseases spread like wild fire in the aftermath especially through water reserves. Health issues are changing so rapidly that countries need to elaborate with each other and put in much more effort in making sure the health of the people are taken care of.

Thalassemia Essay Example

Thalassemia Paper Beta Thalassemia Beta thalassemia is an inherited blood disorder characterized by the abnormal production of a blood protein called hemoglobin. This condition is caused by a mutation within the gene that is responsible for the healthy production of hemoglobin. In healthy people, hemoglobin carries oxygen to tissues and cells throughout the body. Patients with beta thalassemia do not have adequate levels of oxygen within the blood, which can cause anemia. There are two main types of beta thalassemia with symptoms that range from mild to severe. Beta-globin is produced by two genes, one gene from each parent. The severity of the condition correlates with the amount of normal beta-globin production. Beta Thalassemia Minor The individuals with thalassemia minor have only one copy of the beta thalassemia gene. These individuals are said to be heterozygous for beta thalassemia and will have mild anemia. This situation can vary closely resemble that with mild iron-deficiency anemia. However, people with thalassemia minor have a normal blood iron level. No treatment is necessary for thalassemia minor. In particular, iron is neither necessary nor advised. Beta Thalassemia Major The child born with thalassemia major has two genes for beta thalassemia and no normal beta chain gene. The child is homozygous for beta thalassemia. This causes a striking deficiency in beta chain production and in the production of HBA. The clinical picture associated with thalassemia major was first described in 1925 by the American pediatrician Thomas Cooley. Hense, the name Cooleys anemia in his honor. At birth the baby with thalassemia major seems entirely normal. Anemia begins to develop within the first months after birth. It becomes progressively more and more severe. We will write a custom essay sample on Thalassemia specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Thalassemia specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Thalassemia specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Chromosome location The gene controlling beta chain production is located on the short (p) arm of chromosome 11 at position 15. 5. More precisely, The HBB gene is located from base pair 5,203,271 to base pair 5,204,876 on chromosome 11. Characteristics of the Disease Beta thalassema major is characterized by severe anemia that can begin months after birth. In the United States and other developed countries, beta thalassemia is identified and treated early and effectively. In untreated, beta thalassemia major can lead to severe tiredness, jaundice, and growth and developmental delay. The body attempts to compensate by producing more blood cells in the bone marrow. However, this is ineffective without the needed genetic instructions to make enough functioning hemoglobin. Instead, obvious bone expansion and changes occur that cause characteristics facial and other changes in appearance, as well as increased risk of fractures. Severe anemia affects other organs in the body such as the heart, spleen, and liver. This can lead to heart failure and enlargement of the the liver and spleen. When untreated, beta thalassemia major generally results in childhood death, usually due to heart failure. Fortunately, in developed countries diagnosis is usually made early, often before symptoms have begun. This allows for treatment with blood transfusion therapy, which can prevent most of the complications of the severe anemia caused by beta thalassemia major. A compelet blood count will identify low levels of hemoglobin and other red blood cell abnormalities that are characterized with beta thalassemia. Since thalassemia trait can sometimes be difficult to distinguish from iron deficiency, tests to evaluate iron levels are important. A hemoglobin electrophoresis is a test that can help identify the types and quantities of hemoglobin made by an individual. This test uses an electric field applied across a slab of gel-like material. Hemoglobins migrate through this gel at various rates and to specific locations, depending on their size, shape, and electrical charge. In addition, isoelectric focusing and high-performance liquid chromatography (HPLC) use similar principles to separate hemoglobins and can be used instead of or in various combination with hemoglobin electrophoresis to determine the types and quantities of hemoglobin present. Hemoglobin electrophoresis results are usually within the normal range for all types of alpha thalassemia. However, hemoglobin A2 levels and sometimes hemoglobin F levels are elevated when beta thalassemia disease or trait is present. Hemoglobin electrophoresis can also detect structurally abnormal hemoglobins that may be co-inherited with a thalassemia trait to cause thalassemia disease or other types of hemoglobin disease. Sometimes DNA testing is needed in addition to the screening tests. This can be performed to help confirm that diagnosis and establish the exact genetic type of thalassemia. Treatment or Management of the Condition The most common treatment of all major forms of thalassemia is red blood cell transfusions. These transfusions are necessary to provide the patient with a temporary supply of healthy red blood cells with normal hemoglobin capable of carrying the oxygen that the pateints body needs. While thalassemia patients were given infrequent transfusions in the past, clinical research led to a more frequent program of regular blood cell transfusions that greatly improved the patients quality of life. Today, most patients with a major form of thalassemia receive red blood cell transfusions every two to three weeks, amounting to as much as 52 pints of blood a year. Because there is no natural way to the body to eliminate iron, the iron in the transfused blood cells builds up in a condition known as iron overload and becomes toxic to tissues and organs, particularly the liver and heart. To help remove excess iron, patients undergo iron chelation therapy, in which a drug introduced into the body which binds with excess iron and removes it through the urine or stool. In 2005, FDA approved an oral chelator, Exjade. This is a pill which is dissolved in water or juice once a day. Molecular Genetics Beta thalassemia is caused by mutations in the HBB gene. More than 250 mutations in the HBB gene have been caused beta thalssemia. Most of the mutations involve a change in single DNA building block within or near the HBB gene. Other mutations insert or delete a small number of nucleotides in the HBB gene. HBB gene mutations that decrease beta-globin production result in a type of the condition called beta-plus thalssemia. Mutations that prevent cells from producing any beta-globin result in beta-zero thalssemia. Without proper amounts of beta-globin, sufficient hemoglobin cannot be formed. A lack of hemoglobin disrupts the normal development of red blood cells. A shortage of mature red blood cells prevents these cells from carrying and delivering enough oxygen to satisfy the body’s energy needs. A lack of oxygen in the body’s tissues can lead to poor growth, organ damage, and other health problems associated with beta thalassemia. Genetic Testing DNA analysis is available to investigate deletions and mutations in the beta-globin producing genes. Family studies can be done to evaluate carrier status and the types of mutations present in family members. DNA testing is not routinely done but can be used to help diagnosis thalassemia and to determine carrier status. Other relevant information Being a carrier of the disease may confer a degree of protection against malaria, as it is quite common among people of Italian and Greek origin, and also in some African and Indian regions. This probably by making the red blood cells more susceptible to the less lethal species Plasmodium vivax simultaneously making the hosts red blood cell environment unsuitable for the more lethal strain Plasmodium falciparum. This is believed to be a selective advantage for patients with the various thalassemia traits. More information can be found at: * Medline Plus * Genetics Home Reference * Cooleys Anemia Foundation References Beta Thalassemia. Genetics Home Reference. U. S. National Library of Medicine. July 2009. April 25, 2010. http://ghr. nlm. nih. gov/condition=betathalassemia Beta Thalassemia. Lucile Packard Childrens Hospital. 2010. April 25, 2010. http://www. lpch. org/DiseaseHealthInfo/HealthLibrary/hematology/thalbeta. html About Thalassemia. Cooleys Anemia Foundation. 2010. April 25, 2010. http://www. thalassemia. org/index. php? option=com_content;view=article;id=19;Itemid=27 Beta Thalassemias. US Department of Health ; Human Services. National Institute of Health. 2010. April 25, 2010. http://www. nhlbi. nih. gov/health/dci/Diseases/Thalassemia/Thalassemia_WhatIs. html Mormino, Vincenzo. Thalassemia in Sicily. Best of Sicily Magazine. 004. April 25, 2010. http://www. bestofsicily. com/mag/art133. htm Thalassemia. Prathama Blood Center. 2010. April 25, 2010. http://www. prathama. org/thalassimias. php Thalassemia. Disease Information. Iron Overload. 2010. April 25, 2010. http://www. ironoverloadme. com/hcp/disease_information/thalaseemia. html When Your Child Has Beta Thalassemia. Mount Nittany Medical Center. 2010. April 25, 2010. http://www. mount nittany. org/wellness-library/healthsheets/documents? ID=11943 Beta Thalassemia. Access DNA. 2010. April 25, 2010. http://www. accessdna. com/condition/Beta-Thalassemia/60

Free Essays on Organization Development-Creativity

â€Å"In the Creative Economy, the most important intellectual property isn’t software or music or movies. It’s the stuff inside employees’ heads. When assets were physical things like coalmines, shareholders truly owned them. But when the vital assets are people, there can be no true ownership. The best that corporations can do is to create an environment that makes the best people want to stay1† -Cor Peter An organization that stimulates creativity develops novel approaches to doing the work or unique solution to problems. Innovation is the process of taking a creative idea and turning it into a useful product, service, or method of operation. Thus, the innovative company is characterized by its ability to channel creativity into useful outcomes. When managers talk about changing an organization to make it more creative, they usually mean they want to stimulate innovation. Nevertheless, sometimes just have creative people is not enough. It takes the right environment for the innovation process to take hold and prosper. Robbins and Coulter (1999) have identified three sets of variables that have been found to stimulate innovation: the organization’s structure, culture, and human resource practices2. The importance of innovation in the textile industry has risen dramatically during the last few decades. â€Å"Innovate or lose† has increasingly become the rallying cry of today’s managers. During the peak of the industrial era, a company could prosper from slowly developing and refining one single product or service. The increasing pace with which business now reshapes itself – propelled by the new capabilities offered by information technology, which places higher demand on the organizational memb... Free Essays on Organization Development-Creativity Free Essays on Organization Development-Creativity â€Å"In the Creative Economy, the most important intellectual property isn’t software or music or movies. It’s the stuff inside employees’ heads. When assets were physical things like coalmines, shareholders truly owned them. But when the vital assets are people, there can be no true ownership. The best that corporations can do is to create an environment that makes the best people want to stay1† -Cor Peter An organization that stimulates creativity develops novel approaches to doing the work or unique solution to problems. Innovation is the process of taking a creative idea and turning it into a useful product, service, or method of operation. Thus, the innovative company is characterized by its ability to channel creativity into useful outcomes. When managers talk about changing an organization to make it more creative, they usually mean they want to stimulate innovation. Nevertheless, sometimes just have creative people is not enough. It takes the right environment for the innovation process to take hold and prosper. Robbins and Coulter (1999) have identified three sets of variables that have been found to stimulate innovation: the organization’s structure, culture, and human resource practices2. The importance of innovation in the textile industry has risen dramatically during the last few decades. â€Å"Innovate or lose† has increasingly become the rallying cry of today’s managers. During the peak of the industrial era, a company could prosper from slowly developing and refining one single product or service. The increasing pace with which business now reshapes itself – propelled by the new capabilities offered by information technology, which places higher demand on the organizational memb...

Vegetarianism vs Omnivore Essay

Vegetarianism vs Omnivore Essay Vegetarianism vs Omnivore Essay Why Vegetarianism is better for the Health than Omnivorism? Abstract Vegetarianism is the practice whereby a person does not consume animal foods, restricting him or herself to eating vegetable foods only. Such a person is referred to as a vegetarian. Vegetarian diets vary widely, ranging from exclusive non-consumption of animal products at all to consumption of animal products such eggs, dairy products, poultry and fish. Vegetarian diets involve plant based foods like legumes, grains, vegetables, nuts fruits and seeds. Vegetarians vary depending on whether or what kinds of animals are eaten. Strict vegetarians are called vegan and their diets exclude all forms of animal products like fowl, meat, eggs and dairy. On the other hand, a lacto-ovo- vegetarian consumes dairy products such as eggs besides plants products. Whereas Lacto vegetarians consume dairy products in addition to plant products, an ovo vegetarian consumes eggs only, as animal products (Nordqvist). Fruitarian vegetarians consume raw and dried fruit and vegetables only. Cooking is believed to harm the fruits’ nutritional ingredients. Such vegetarians eat all types of fruits, both sweet and non sweet. There are also the semi-vegetarians who consume plant based foods combined with slight amounts of poultry and fish. On the other hand, the macrobiotic vegetarians’ diet consists of cereals, whole grains and cooked vegetables. Omnivorism vegetarians on their part belief in the exclusive consumption of animal and plant based foods. They consume both in moderation. There is a growing concern that the different types of vegetarians like lacto vegetarians are ethical omnivores. An omnivorous diet contains plants and animal foods, but omnivorous persons put more emphasis on meat than on other foods (Nordqvist). As vegetarianism has gained popularity in the 21st century, there are reasons as to this newly emergent dietetic trend. Some of these reasons include the following: 1. How did vegetarianism come about? 2. What are the health benefits of vegetarianism, as opposed to omnivorism? 3. What are the social values for being a vegetarian, as opposed to omnivorism? 4. What is the ethics behind vegetarianism? 5. What is the spirituality behind vegetarianism? 6. How do I become a vegetarian? 7. What might happen if plants cease to exist anymore? History of vegetarianism dates back many centuries from the Asian subcontinent. However, vegetarianism is not historically constrained to the East. As early as the 16 century, Greek philosophers like Pythagoras and others abstained from meat consumption based primarily on their belief in the transmigration of souls. The 18th century vegetarian advocates included Voltaire of France and Franklin Benjamin of America. Although there have always been a followers of vegetarianism, the rapid growth of the movement in the United States occurred principally since the 1970s. Currently, there are millions of vegetarianism, as well as magazines, journals and books published to help them in pursuit of vegetarianism. One key reason for vegetarianism is regards for health. There have been nauseous concerns about sanitation of slaughter methods and production houses. This raises a health concern on possible contamination of the meat itself during the transportation, storage and entire preparation process. In America, there are about one million farmers and ranchers who carry out livestock farming. In comparison there are about six thousand plants that are federally inspected to process. Additionally, only four major packers process about 70 percent of beef and other four packers of 60 percent of pork in the United States. Further, there are concerns that persons concerned with slaughtering do not observe humane slaughter act of 1960. The act necessitates that, before slaughtering, animals must be rendered wholly unconscious, with the least of excitement and discomfort by use of electrical, mechanical and chemical (carbon dioxide gas) methods. Some persons contend that these methods are not as accur ately as they should be. Lack of observation of these principles results in contamination of the meat products considering that meat products are delicate and highly perishable products. In order to live healthy, persons should resort to vegetarianism (Keegan 136). Over consumption of meat products is the leading cause of weight gain, whereas overconsumption of vegetables does not result in weight gain. Meat intake results in calories add up bit by bit compared to fiber rich veggies like green beans. Persons who consume large quantities of meat are obese, while persons consuming veggies are healthier. Since meat consumption has resulted in obesity among many people, fast foods around the world are embarking on selling vegetable meals, which is increasing ground, implying that vegetarianism is better for health than omnivorism (CindyL). Omnivorism results in low life span as compared to vegetarianism conscious living. A survey sponsored by the United States national cancer institute revealed that persons who eat four bits or more daily are at 30percent risk of dying than vegetarians. The study further showed that processed meat also increases death risks. Meat does not contain fiber, which results in the digestive system complications. Further, lack of fiber in the body increases the risk of heart and cancer problems. According to National Cancer Institute, Rectal and colon cancer have resulted in more 51,690 deaths in United States in 2012. While lack of fiber in meats causes diseases, presence of fiber in vegetables protect the body against disease. As such, vegetarianism is better for health than omnivorism. Meats contain saturated fats which are harmful to the body. The meat fats surround the arteries and vessels of the heart, interfering with the proper functioning of the heart. The interference affects free movement of blood in the body, posing the risk of heart attack. Meats contain a high concentration of salts and nitrates. Meats like hot dogs and bacon contain high salts and other preservatives which are not healthy for the body. Further, such foods contain animal fur, which means that they are not prepared in healthy ways. Other preservatives in processed meats are harmful to the body, since they contain chemicals that are carcinogenic. For instance, high concentration of salts and nitrates can cause high blood pressure and trigger other cardiovascular and chronic ailments. In order to live healthy, meat consumption should be balanced with vegetables. Proteins obtainable from animal products can also be obtained in plants, whereas nutrients available in plants cannot be substitut ed for anything else. This is a clear indication that vegetarianism is better for health than omnivorism (CindyL). Vegetable foods are very healthy to the entire body, and especially the heart. Does the omnivorism affect the heart? This is a contentious topic that has been the subject matter of debate for several decades, but doctors and scientists came to agree that diets could cause or prevent heart disease. This view is also held by the seventh day Adventist religious group, who are massive flowers of vegetarian practices worldwide. The religious group holds the following precepts on the health benefits of a vegetarian lifestyle. They assert that Adventist omnivore men who are fifty five years and above are twice more likely to die of a heart ailment than vegetarian Adventists. Men aged 40 to 54 who eat meat more than six times a week are 4 times, likely to suffer from a deadly heart attack than vegetarian men. Women over 55 years who eat meat are 1.5 times at risk of a lethal heart attack than do female vegetarians. As for Christians who are strictly vegetarians, their assertion comes from th e book of psalms 104:14. The verse states â€Å"He causes grass to grow for the cattle, and vegetables for the service of man†. Another verse in Genesis 1:29 that supports this view reads as â€Å"I give you every seed bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food† (Contreras 85). Even the conventional American dietetic association recognizes that a budding body of scientific knowledge holds an affirmative association, between the consumption of a plant based diet and prevention of certain ailments. The meat industry denies the health gains of vegetarian diets. However, research on cancer high blood pressure, obesity and heart diseases indicates otherwise. A recent research on the role of diet in prevention of certain conditions evidences that heart disease is related to excessive intake of fats. The foods that we take are the sole important factor in establishing whether or not we develop heart diseases. Fruits and vegetables are the backbone of a healthy heart. Several studies show that persons who consume a lot of fruits have reduced risk of heart disease. One such example is Finland, where people consume potentially more fruit and vegetables. This change is related directly with decrease in deaths from the heart ailment (Keegan 156). In San Francisco, Dr. Ornish Dean of the California University found that individuals who consumed vegetarian foods that were low in fat had half the number of heart complications as people who ate meat on a typical American diet. Additionally, they shed off thirteen pounds and kept it off for a period of four years. Fruits and vegetables do not have cholesterol and are naturally low in fat concentration, calories and sodium. They are rich in fiber, folic acid, protein and vitamin C. In another study carried out in Italy, high levels of vegetable consumption led to 21 percent reduction in heart attacks and reduced chest pains by 11 percent. A high consumption of fruits also reduces blood pressure. Vegetables and fruits are rich is phytochemicals which help in prevention of heart ailment. Phytochemicals are biologically active minerals and vitamins that fall into plant sterols, flavanoids and plant sulfur compounds (Contreras 94). Plant sterols help to obstruct cholesterol assimilation from the diet or increase excretion of cholesterol in the body. Flavanoids extend the activity of vitamin C by acting as free fundamental scavengers, prevent LDL cholesterol oxidation, inhibit aggregation of platelets and possess anti-inflammatory action. Intake of flavanoids has been shown to decrease the casualty of heart ailment and the incidence of heart attack. Mature males with high consumption of flavanoids were 60 percent less the risk of heart death than low consumers according to the Zutphen elderly study. The study also revealed that most- menopausal women consumers of fruits and vegetables are responsible for 38 percent reduction in heart complications. Broccoli was found essentially noteworthy on reducing heart disease (Contreras 96). Plant sulfur compounds found in the allium family of vegetables has been shown to have preventive and protective properties against cardiovascular disease. Garlic leeks and onions are specifically shown to have these properties. Color pigments; anthocyamins in vegetables and fruits helps to shield consumers from heart disease. They protect heart disease by slowing cholesterol generation. Carotenoids pigments in yellow orange green and red vegetables are powerful anti oxidants that satiate free radicals, strengthen the immune system and protect the body against oxidative damage. Vegetables help to maintain the level of sugar in the blood which reduces the risk of adult onset diabetes (Contreras 91). By logically comparing omnivores and carnivores, it is clear that man was not created to take meat. Meat eaters have claws to help them in their meat eating habits while humans do not have claws. Meat eating animals have sharp front teeth for tearing flesh with no flat molar for grinding. Humans have no pointed front teeth, and have flat molars for grinding, similar to that of herbivores. Meat eaters have a larger intestine capacity that is thrice their body length in order to aid rapidly decaying flesh to bypass through rapidly. Human on the other hand have an intestinal track that is ten times their body size. Another physiological difference that shows that vegetarianism is better for a man’s health is that, meat eaters have a powerful hydrochloric acid in the stomach to aid meat digestion while humans have a weaker stomach acid. This shows that humans overwork their digestive system by consuming meat. Humans have a properly developed salivary gland, which is vital for pre- digesting grains and vegetables. Meat eaters do not have salivary glands in the mouth. These distinctions clearly show why vegetarianism is the healthy way for human beings (The Vegetarian Resource Group). A certain group of researchers investigated for the symbolic meaning of eating by contrasting the beliefs and values of omnivores and vegetarians. They contrasted a wide assortment of omnivores and vegetarians on the right wing totalitarianism, social domination orientation, eating values and human values. The participants tending towards omnivorism differed from those inclining towards veganism in two chief ways. The omnivores were more likely to sanction hierarchical ascendancy, and they placed less importance on sentimental states. Consequently, the approval or rejection of meat covaried with the approval or denunciation of the values related with meat; that discovery suggests that persons eat meat and embrace its representation in manners unswerving with their self definitions (Keegan 169). The spirituality behind vegetarianism is traceable in old religions like the Jewish and Christianity. Jewish dietary laws follow the context of mosaic laws, and they prescribe a healthy living whether one is Buddhist, Chinese or Muslim. Religious reasons are the primary reasons as to why some people adopt vegetarianism. Some religions assert the belief of re-embodiment, a multilfe relationship between animals and humans, thus, eating flesh is forbidden. As such eating flesh is considered as a taboo in religion. Vegetarianism becomes the best solution for such persons as they observe their diets (Keegan 159). Environment ethicists and advocates assert that a diet devoid of meat relates to environmental concern. Persons concerned on the planet ability to produce sufficient quantities of food to sustain a burgeoning population think that lessening meat consumption will aid. For illustration of this point, an acre of land will yield a greater quantity of edible plant than animal meat. One acre of land is capable of producing as much as 385 pounds of alfalfa seed from one pound of seed. If in turn the 384 pounds are sprouted for food, the yield will be around 3180 pounds of consumable sprouts. As such, consumption of plant can make a significant environmental difference. As part of ethics associated with omnivorism, taking the life of the poor animal is bad as it involves killing. In order to live a conscious life, a person can use the gradual or rapid change. Gradual change into vegetarianism is preferable because the slow change tends to become more of a lifestyle and long term move. Additionally, rapid change may not go well with some people; their digestive systems may not accommodate such so fast. A gradual change entails increasing intake of legumes, fruits, vegetables and whole grains while lessening meat intake at the same time. For persons who want to become vegetarians, they can follow the following guidelines. First, choose one whole grain products like cereals and rice. Ensure that the diet is diverse. Consider low or non fat dairy foodstuffs. Reduce intake of eggs consumed per week to three or four in one week. It is necessary to plan well on what foodstuffs to purchase when shopping. Read through the food labels before purchasing. Finally, it is essential to identify a specialist store where one will be obtaining supplies. If plants cease to exis t, there would be no life for both the omnivores and the vegetarians. Safeguard of plants should therefore be enhanced in order to drive healthy and conscious living. writing service provides students with quality custom written papers. All academic essays are written by professional  essay writers from scratch!

Does Violent Video Gaming Have an Effect on Children Research Paper

Does Violent Video Gaming Have an Effect on Children - Research Paper Example Kim et al (2010) have mentioned that â€Å"excessive playing of video games may result in impaired academic performance (Kim et al, 2010). It is an accepted fact that most of the modern videogames are thought provoking and hence it can improve children’s skills such as numerical ability, problem solving, decision making, synthesis, analysis etc. At the same time, it should be noted that spending too much time for playing videogames may have detrimental effect on children as far as the academic achievements of the children are concerned. The increased influence of video games will force the children to decrease the time spent for learning academic topics. In other words, children who spent more time for playing videogames may spent little time for doing their home works, assignments or project works. Failure in doing home works may result in poor academic performances of the children in schools. Poor academic performances of the children may generate criticism from family and teachers which may generate frustration in the minds of children. Increased frustration may often come out in the form of violent behaviors. In other words, even nonviolent videogames can generate violent behavior indirectly among children. Children may discuss the themes of the violent videogames they played even at schools and they may try to implement it in their real life also. For example, Grand Theft Auto is one of the most popular videogames among children at present. The theme of this videogame is a motor vehicle theft as the name indicates. Same way Mortal Kombat is another videogame in which the major theme is fighting. Such videogames will definitely encourage children to do the same activities in their real life as they... Children of current generation are not much keen in playing physically hardworking sports and games; they are more interested in spending as much time in front of the computers, mobile phones or television sets for playing videogames. According to Gouzouasis et al (n. d), â€Å"the type of extra-curricular activities like playing an instrument versus playing video games has differential effects on the person’s skill acquisition and personality development†. The themes of majority of the videogames currently available are violence. Many people believe that violent videogames play a vital role in the personality development of children. Moreover, many of the school violence incidents are happening as a result of the increasing influence of violent videogames upon children. Children who engaged in playing violent videogames may try to practice violence in their real life also. At the same time many other people believe that violence in videogames may not affect childrenâ⠂¬â„¢s attitude or character very much. Videogames playing may have some utility as far as the mental development of the children are concerned. However, playing violent videogames may always affect the children negatively. Unknowingly children may develop violent behaviors as a result of continuous playing of violent videogames. Since children have less awareness in segregating good and evil, they may often try to practice the themes they observed in the violent videogames in their real life. Many of the school violence incidents are taking place as a result of the increasing influence of violent videogames upon children. In short, videogame playing, especially the violent videogame playing should be restricted among children. Parents and teachers should focus more on student activities and they should assist the children in the selection of videogames for playing.

Monetary policy Essay Example | Topics and Well Written Essays - 1250 words

Monetary policy - Essay Example The RBA often determines the official cash rate after deciding on what monetary policy target it intends to attain (Reserve Bank of Australia, 2012a). Such targets may include, increasing economic growth, lowering inflation. RBA uses open market operations to affect the changes of the official cash rate, which in turn trickles down to the financial system in the country. Although RBA changes the official cash rate through open market operations, the actual cash rates are often determined by supply and demand actions among banks. Each bank is free to determine the rate by which it lends to another bank. Changing the official cash rate however, impacts all other interest rates in the market which in turn impacts the supply and demand of money in the economic system (Reserve Bank of Australia, 2012b; Lowe, 1995:1-2). The market rate of interest on the other hand is the rate that financial institutions charge its clients for borrowing money. This interest is often impacted by changes in the official cash rate, whereby increases in cash rate would imply that the banks are borrowing from other banks expensively and hence would also increase the interest rate that they charge their customers for borrowing money. A drop in the official cash rate would make it cheaper for the banks to borrow funds and hence competition among banks would reduce the market interest rate across the Australian Economy (Smales, 2011:52-55). The RBA decreases the cash rate through open market operations in order to ensure that the official cash rate that has been set is as close as possible to the actual cash rate exhibited in the market due to forces of demand and supply. Each financial institution in the country has an Exchange settlement account for which enable banks to settle payments between each and also with the RBA. Where RBA wants to reduce the cash rate, it would buy repurchase agreements (repos) or second-hand common wealth government securities (CGS) from the financial institutio ns in the economy. The RBA pays the banks using their exchange settlement accounts with the RBA which increases the amount that they have access to and can lend out (Reserve Bank of Australia, 2012b; Kuttner and Mosser, 2002: 16). This increases the supply of money in the economy, and due to competition to lend out to borrowers, the cash rate as well as the market interest rates drop. This is as demonstrated in a simple Keynesian model below: As noted in the figure, when the RBA uses the open market mechanism to purchase government securities and repos, the money supply denoted by MS, moves from the original position MS to MS1 showing a rise in money supply. Since the supply money is inelastic relative to interest rates, the MS curve is perfectly inelastic. On the other hand, the demand for money changes with changes in interest rate. Hence as money supply increases in volume due to RBA purchasing repos and CGS, interest rates fall also drop. Answer two Effect of a decrease of inter est rate on: Consumption and Investment expenditures: a fall interest rates increases investment and consumption. As noted above, a fall in interest rates is as a result in an increase in money supply. This makes it possible for businesses and consumers increase their borrowing from banks at a lower rate of interest since it is cheaper to access loans. Hence, there would be an increase in consumption and investment expenditures financed by debt as businesses are able to access funds for capital goods such as equipments, and consumers are also able

Learning English as a Second Language Essay Example for Free

Learning English as a Second Language Essay From the content in the introductory part of the WebQuest, It is true that English is common language for the native people but for the non native people it is challenging and requires one to go through a series of classes compounded by determination and willingness to learn in order to understand it well. The thesis statement of the web quest gives an over view of what the rest of the content is all about. It gives the fundamental steps of learning English which involves understanding the meaning of different vocabularies provided and using them in a well structured and grammatically correct sentence. As a teaching material, this WebQuest highlights the main objectives, which will serve as the yard stick of determining whether the intended purpose of the WebQuest is achieved. In addition to this, I give a positive feed back to the way the learning process is arranged. Understanding a word and pronouncing it correctly is indeed the fundamental step in solving the complexity in English as a language. This is because it creates a dovetail for the construction of grammatically and structurally perfect sentences to fit. Team work is undoubtedly important in building confidence among the students. It also enables them to share their difficulties and hence understand the challenges a head of them. Provision of resources is of importance because it gives the whole learning process the originality and reliability it deserves. The evolution process cannot go unaccredited because it will enable the lecturers to know if the objectives were met. However, the WebQuest fails to show what the students should do if they fail the second step of understanding the meaning of the words in the sentences. This in my opinion is crucial for the process of learning English as a second language.

Getting Things Done: The Art of Stress-Free Productivity :: Book Review, David Allen

The book I chose to read is Getting Things Done: The Art of Stress-Free Productivity by David Allen. David Allen is considered by Forbes Magazine to be in the top five executive coaches in the United States. He has over thirty years of experience in coaching some of the highest ranking executives in some of the biggest businesses in the United States. Time Magazine called this book, â€Å"the defining self-help business book of it’s time." The book is broken down into three main parts and thirteen chapters and sub-sections. The first part is titled The Art of Getting Things Done. It contains information on societal shifts in the workplace and ways to manage work. Among his tips, he believes everyone should physically write down every task they must accomplish on a daily basis, whether they write it on paper or electronically. They must then make decisions based on length and importance and decide which tasks to accomplish and when to accomplish them. His main point of emphasis in this first chapter is that the mind becomes too cluttered and that short-term memory should be used to focus not store things. In chapter two, the author introduces his five keys or stages to controlling/managing workflow. They are (1) to collect, (2) process, (3) organize, (4) review and (5) do. He points to these five steps as a way to organizing work that needs to be accomplished and successfully completing it. The last chapter in the firs t section is about vertically focusing on the thought process to complete projects. Allen outlines five more steps to accomplish any task. They are (1) defining purpose and principles, (2) outcome visioning, (3) brainstorming, (4) organizing, and (5) Identifying next actions. The second part of this book, which is well over  ½ of the entire book, is somewhat of a repeat of the first part but a much more detailed perspective of the methodology of David Allen. He recommends taking two days at the start of his process just to get organized. Within these two days, one should set up private workspace not only at work but at home also. In chapter five and six, Allen refers back to his five keys to control workflow, he points out to accomplish the collecting phase completely before moving onto the processing and organizing stages. This will eliminate distractions. During the processing phase, a person is not really completing any items but rather identifying what needs to be done with each one.

Opening Statement State V Micahel Miller

Ladies and Gentleman of the jury, here we have a malicious crime towards humanity. Here we have the Shirley Thompson accusing Michael Miller of aggravated sexual assault, also holding her at knife point. Shirley Thompson was walking home on the early morning of January 9th. As she is on her way home from a tiring day from work she is viscously attacked by this molester also known as Michael Miller. Thompson works a 7pm-3am shift and on this shift she is the only waitress working. From working this shift she felt sick and asked permission to end her shift at 11 pm. She decided not to contact he husband to tell him she was on her way home because Thompson only lives a six block distance from the tasty good restaurant where she is employed. My client has only worked there for 5 months she meets people that come in and out of that place every day. THAT MAN right their Michael Miller attacked my client on that night of Jan 9th, He will tell you that they had met in times before. Miller and Thompson had an agreement to meet each other. In actuality she had never seen this man before in her life. Mr Miller is employed at Eddie’s service station. Mr. Miller has been through the legal system in times before he has been charged with burglary and pleaded guilty and was let go on 5 yrs probation. We have all the evidence needed to prove that Miller is indeed guilty of this crime towards this hard working lady. Not only do we Ms Thompsons Chilling description of the crime and question: we also have the reporting officers testimony stating the fact in which he found Ms. Thompson after her encounter with this molester. Also in our hands are the physicians medical report that reveals that presence of sperm inside of my client. The Thompson family have been deeply scared by this heinous act. This man should be charged with Rape in the 1st degree, criminal possession of a weapon in the 4th degree and kidnapping in the 4th degree. He should kept out of society it’s obvious he can’t socialize without attack. He has shown attendance for crime in his past, that same criminal instinct has rise once again

A Ideal Partner

To be able to completely trust your life on a simple word from your partner is a soul quality of admiration. A man that I know is going to be there for me through all the complexities that life puts forward, pleasant and not so pleasant no matter what the consequences. Women have consistently been recognized for their desire and style of communication, for the means of expressing emotions, frustrations, and information exchange. The quality of sincerity is one that can be the foundation of a life long relationship. Commitment is a quality that forsaking all other, you are faithful to your partner in life and life-eternal. The quality of integrity is one that I hold very high on my standards for a man. Each of these proceeding characteristics contributes to a man of desire. The reasoning that I firmly believe this is because I†tmve found my ideal partner in my husband. The definition of sincere is to be free from pretence in behavior or feelings, to be genuine and honest. A man can be compassionate towards his friends or family. Having a man whom you can count on wholeheartedly by his word is irreplaceable. For my partner to risk his life or surrender himself on my behalf would be of complete aspiration. The perfect companion that would be for myself would be a man of sincerity, integrity, compassion, and commitment. The qualities that intrigue me are not of material or superficial possessions, but internal contentment and confidence.

Precycling The Essence of Conservation essays

Precycling The Essence of Conservation essays Precycling: The Essence of Conservation As we shift into a new millennium, our society must face the pressing environmental issues that we have ignored for so long. The earths resources have dwindled tremendously and unnecessarily in recent years. People need to start saving our precious resources through precycling. Precycling, a fancy word for waste reduction, is any activity that prevents or minimizes the toxicity or quantity of waste. This would include product reuse, increased product life, reduced material and energy use in product design, and changing purchasing and waste producing habits. Toxicity reduction includes changes in product and packaging designs, and purchasing reusable toxic items rather than disposable ones. Precycling should be a higher priority than any of the other waste management methods, including recycling. Waste reduction is the most environmentally friendly form of waste management because, unlike other methods, there is no need to process or transport materials. As a result energy and resources are saved. Source reduction is hardly an issue with companies and consumers. It seems like a contest of who can put the most excessive packaging on their products. The good news is that the decisions we make every day can support precycling in a big way. Schools can be role models for precycling and plant a seed for students to take action. At Ashland High School, the back side of paper should never be wasted. Printers (with available technology) should print on both sides as well. On assignments done at home, homework could be put on a disk and given to the teacher to view, rather than be printed out for one-time viewing. Reusable plates and utensils should be used in the cafeteria rather than wasting hundreds of paper plates every lunch hour. While precycling can be accomplished at AHS, students need to be informed on what they can do in their own lives to save our resources. It’...

Good Business Schools With One-Year MBA Programs

Good Business Schools With One-Year MBA Programs A one-year MBA program is a Master of Business Administration (MBA) program that takes 12 months to complete. One-year MBA programs are also known as fast-track MBA programs, accelerated MBA programs, or 12-month MBA programs. What differentiates this program from a traditional MBA program is the amount of time it takes to complete the program and earn a degree. Traditional MBA programs typically take two years to complete. So, a one-year MBA program allows students to earn their degree in half the time it takes an average student. One-year MBA programs also have financial benefits over two-year programs. For instance, tuition is half the price because you have to pay for just one year of education rather than two. There is also missed income to consider. Attending school full-time for two years means two years without full-time employment income. A one-year MBA program gets you back to work in half the time. Business Schools With One-Year MBA Programs INSEAD began offering the first one-year MBA program decades ago. These programs are now commonplace in many European schools. The popularity of the programs has prompted many U.S. business schools to offer an accelerated MBA option in addition to traditional two-year MBA programs, executive MBA programs, and part-time MBA programs. You won’t find a one-year MBA program at every business school, but you should have no problem locating a one-year MBA program at a good business school. Lets take a look at some of the well-known and reputable business schools that allow students to earn an MBA in one year or less. INSEAD We start our exploration of one-year MBA programs with INSEAD because it pioneered the one-year MBA and is widely considered to be one of the best MBA schools in the world. INSEAD has campuses in France, Singapore, and  Abu Dhabi. Their accelerated MBA program can be completed in just 10 months. During that time, students take 20 courses (13 core management courses and 7 electives). Students can choose from more than 75 different elective options, which allows for a fully customizable experience. Another positive attribute of this program is the opportunity to experience multicultural education. INSEAD students are diverse, representing more than 75 nationalities. During the first four months of the program, students complete dozens of group projects so that they can learn what it is like to lead and work in diverse teams. At least half of INSEAD grads go on to own or manage their own company. Read more about the INSEAD MBA program. Kellogg School of Management The Kellogg School of Management at Northwest University is one of the highest ranked U.S. schools with a one-year MBA program. It was also one of the first U.S. schools to offer a one-year MBA program. The most interesting aspect of the Kellogg program is that it doesn’t jam two years worth of courses into 12 months like some schools do. Instead, Kellogg students get the option to skip core courses and focus on electives that match their career goals. With more than 200 courses to choose from, students can really make sure their education is as broad or as focused as they would like it to be. The customization continues with experiential learning. Kellogg has more than 1,000 experiential learning opportunities to choose from, including special labs, courses, and projects that provide real experience with critical business and management issues. Read more about the Kellogg One-Year MBA program. IE Business School IE Business School is a Madrid school that is consistently ranked among the best schools in Europe and on a global scale. The student body in the one-year MBA program, also known as the IE International MBA program, is 90 percent international, which means classrooms are diverse. MBA students can choose from either English or Spanish instruction. The curriculum shies away from the traditional - up to 40 percent of the program can be customized and tailored to your individual career goals and needs. One-year MBA students start out with a core period that emphasizes entrepreneurship before moving on to a lab period that consists of two accelerated labs designed to provide  experiential, challenge-based learning. The program culminates with an elective period that allows students to customize the rest of their education with courses, study at Wharton (a partner school), competitive IE consulting projects, a 7-10 week internship, and other unique opportunities. Read more about the IE International MBA program. Johnson Graduate School of Management For students who want to earn an Ivy League MBA from a U.S. school in just 12 months, the Johnson Graduate School of Management at Cornell University is the place to be. Johnsons one-year MBA program is specifically designed for current and aspiring professionals with strong leadership and quantitative skills. Students in the one-year MBA program take core courses during 10-week summer term before joining two-year MBA students in remaining courses. One-year MBA students also have access to the full range of courses across Cornell University, which amounts to about 4,000 different options. Highlights of the one-year MBA program include international study trips, a fall semester Management Practicum that allows students to gain hands-on experience through real consulting projects, and a spring semester Immersion Program that integrates coursework with fieldwork. Read more about the Johnson One-Year MBA program. Selecting a One-Year MBA Program The business schools mentioned in this article are not the only good schools with a one-year MBA program. There are a lot of them out there! However, these schools do provide a solid example of what you should look for in a one-year program. Some of the most desirable programs offer: Diverse classroomsA solid core curriculumCustomizable electivesExperiential learning experiencesGlobal learning experiencesInternship opportunities

Fathers need to be as involved in their children's lives as mother are Essay

Fathers need to be as involved in their children's lives as mother are - Essay Example Fathers should be involved in their children’s lives just as much as their mothers are because fathers offer different skill sets than mothers, children receive a much improved childhood, and fathers good set a good example for their children. One reason why fathers need to play an equal role, in conjunction with their wives, in their children’s lives is that they have certain characteristics that cannot be replicated by mothers. In single-parent households, mothers are generally left to pick up the slack left behind by an absent father. That is not to say that a mother cannot fill the gap of a missing father, but each parent has specific roles that must be performed by them. While mothers are generally left to enforce the rules that children must live by, it is the responsibility of fathers to set these rules and then meter out the appropriate punishment if these rules happened to be broken. For a mother to perform all three of these actions is perhaps too much. Childr en would feel like they were getting singled out for nothing. It is for this reason that fathers often command more respect that mothers do. This is because children instinctively know that fathers are the ones in charge and that the buck stops with them. It is okay for fathers and mothers to have different positions on how to raise their children because each would have an idea on how to raise their kids. As the old cliche goes, â€Å"Two heads are better than one.† This is not to put mothers down; it’s just that fathers fill a place that can help to enhance a family’s relationship. Another reason why fathers must involve themselves in their children’s lives just as much as mothers is that the children are better for it. It is always reassuring for a child growing up to see two parents that are totally committed to each other. Children interpret this as both parents being devoted to the health and well-being of their offspring. This can continue on into other areas of a child’s life such as education and in social settings. Many studies show that children perform better when a father’s is interested in their schoolwork. In terms of a child’s social life, they are better able to make friendships and trust others if they have already experienced this in their family life. The final reason why fathers need to be involved in their children’s lives as much as mothers is that fathers are in a position to be a good example for their children. Fathers have life skills that they can teach to their children that mothers would have no idea about. The role of a father in his son’s life is extremely important. The way a father is involved in his son’s life affects not only how the son’s perceives his father but affects his behaviors later on in life. Fathers who are alcoholics and abusive husbands tend to have sons grow up to do the very same thing. On the other hand, a father who is a loving hus band and has found success in his life will likely have a son who is well-grounded and focused on his life goals. In another way, fathers can show a good example to their daughters too. Fathers who love and care about their daughters will likely find that they grow up to becoming successful young women. Fathers have a very important role to play in the lives of their children because they have always been thought of as the head of the household.

Management E-Commerce Research Paper Example | Topics and Well Written Essays - 1000 words

Management E-Commerce - Research Paper Example Companies appoint managers to make sure that the company is effective, meaning the degree to which the company is able to reach its defined goals. Efficiency on the other hand means amount of resources used to achieve an organizational goal. Management must ensure that they operate in an effective and efficient manner in order to compete in today’s competitive market. Management need to plan, or in other words defining goals for the future of the organization and deciding the tasks and resources that would be required in order to achieve those goals. Organizing means to allocate tasks and jobs and allocating resources amongst departments. Leading refers to the fact that they are able to motivate the employees to extract higher productivity. Lastly, controlling; it is the monitoring of employees ensuring that the organization is on track to attain the specified goals and making corrections if ever required. (Daft) There are a number of organizations in the world who succeed bas ed on their procedural management, which could be called the old school way, where boundaries are defined and the employ has to act according to the dogma of the task at hand. However, recently we have seen that various companies like Google have reached high level of success by using rather unorthodox, yet productive methods of management to avoid alienation of employees and to make the a part of the company rather than just a small cog in a big machine. Google has burst into the international market with its varied range of products and services ranging from the biggest search engine available to Google news, Google earth, maps, cellular phones and many, many more various products. Google uses an unorthodox and unconventional mode of management that is rather new to other organizations; some may call it bizarre, but at the end of the day one has to respect the fact that it earns more than $2billion cash per quarter and it is said that Google alone can finance the whole economy of America for 2 two whole days. Google has an informal slogan, â€Å"don’t be evil.† This basically expresses that at Google you are always welcomed to share ideas and their ways of doing business is open to all and there are no strings attached. They believe that these are the ways through which they can make sure that the employees are more comfortable and are able to perform to their potential in the field. As a matter of fact, Google employees are allowed to wear whatever clothes that pleases them. They have an all you can eat food counter that serves exquisite gourmet to motivate workers further. Google management believes that in order to avoid alienation, they must maintain good, informal relations with employees and also encourages employees to put forward their view and get involved in the decision making procedure since they believe that employees perform better when given importance and getting them involved in ideas enables innovation from various intellectua l minds, which at the end of the day is something Google always places very high importance to. Google management also has their very famous 20 percent rule. They say that for one whole working day an employee can work on whatever project that pleases them and as Google has ample amounts of finances, they are able to carry out their operation which thus leads to innovation. Rest of the days, they work on the project they have been assigned. This ensures effective, if

How can we adapt the design & structure of a british mosque in order Essay

How can we adapt the design & structure of a british mosque in order for it to comply with the architectural development of the modern world (britain) - Essay Example But Minaret and/or dome is/are claimed to be divine properties of mosques and any rejection of them is seen as an opposition to Islam. Edwards Said in his 'Orientalism' says clearly that such symbols are truly needed as, "we all need some foundation on which to stand." (3) In many of the parts of Britain it has been seen that a different kind of religious structures of mosques are formed. Thus, excluding minarets and domes. The public face of mosques need greater attention according to traditionalists. They question that how such buildings of ever changing context in Britain can be associated with Islamic world. It should also be considered that 40-50 years ago the immigrants were quite happy to pray in a make shift house in a terrace house. And as the worship place seemed too small they also didn't mind in buying and converting the schools, bigger houses and warehouses into buildings of worship. This clearly indicates that the only important thing in Islam is to offer prayers to Allah without any external support needed as minarets and domes. Another contemporary leading mosque builder, Al- Sumaria is one of the new generations of Muslims who has much radical approach and states that, "There are four features you must have, first of all you must have a dome you must have a minaret, you must have a Mehrab (the equivalent to an alter) you must have a babul Sulum what we call a frontal entrance. Those 4 features are of paramount importance, without it really any place can be a mosque." (4) This is the basic generational issue where most of the elders do not accept the modern architecture, confiding into commission of building, still not understanding what good architecture is. The younger generation finds the traditional style mosques quite old fashioned and want something more exciting while containing the basic essence that is true worship. According to Al-Sumaria the traditional British Mosques are not doing what people who want the building to respond should. Today the purpose built buildings are a bit more established as people want to raise some money from these to procure the buildings and moving from the adhock alteration of a building. But is it fundamental. The question is serious only if the essential essence of Mosques will be forgotten i.e. converting a building only to make it useful for praying, for Muslim worship. Aim, Objectives and Hypothesis The central aim of the paper is to present the ideal structure and architecture of Mosques in Britain and if any of the modern contemporary changes are affecting the basic element of faith of Islam. The idea of the mosque ever since is that it is place of worship serving as a sacred and clean space for prayer and also providing counselling, education and other services associated with the benefit of a community. They only need is to provide a space for all these services without any direct relation with minarets and domes. K. Alavi highlights that, historically the mosque is an institution with four major roles: a place of worship, a centre of education, a judicial court and a centre for political and administrative

Study On CPU And Memory Hierarchy

Study On CPU And Memory Hierarchy CPU must have compatibility with the memory in the computer system. Memory cannot increase the speed of the processor however it can help the processor increase its performance. If the CPU doesnt get the data it requires, it would sit idle wasting CPU clock cycles that would decrease the overall throughput and execution of the processes. If data needs to be accessed to and from hard disk which is slower as compared to the main memory, more and more cycles are wasted decreasing the efficiency of the system. Conclusion- For better performance of the system, faster program execution and proper CPU utilization the compatibility between CPU and memory is required. A computer employs RAM chips of 256*8 ROM chips of 1024*8. The computer society system needs 2K byte of RAM 4KBYTE of ROM, 4 interface units. Each with 4 registers. A memory mapped I/O configuration is used. The 2 highest order bits of the address bus are connected with address 00 or RAM and 01 for ROM 10 for interface. How many RAM ROM chips are needed? Draw a memory address map. 2 kb of RAM required i.e. 21024(bytes) =2048 bytes (Since 1 kb =1024 bytes) RAM = = 8 chips; and 4kb of ROM is required i.e. 4 x 1024 = 4096 bytes Therefore ROM = = 4 chips; and There are 4 interfaces each having 4 register, So total no. of registers is 44=16 registers; Memory address map Cache Coherence- Caches allow greater performance by storing frequently used data. In multiprocessing system, each processor is provided with its own cache and they all share the same memory or address space so it is possible for more than one processor to access a data item at a time. What if one processor updates the data item without informing the other processors, inconsistencies may result and cause incorrect executions and the problem of inconsistencies is known as Cache Coherence in computing. The coherence of caches is obtained if the following conditions are met. However these read and write operations are said to be one after another and this is not possible due to memory access latency and a write by first processor may not be seen by a read from second processor if the read is made within a very small time after the write has been made. Case 1 Case 2 Processor P1 reads memory location X and then writes back to same location X while no other processor is not accessing the memory location X. Processor P1 reads and then processor P2 writes to and from same location X and currently the location would return value written by processor P2 only. Processor P1 and P2 writes to same memory location X in a sequence and currently the value returned would be decided as per the sequence. Mechanisms- Bus Snooping- In Bus Snooping each cache is connected through the same bus and it is where every CPU knows who has a copy of its cached data. So each CPU watches continually for write activity concerned with data addresses which it has cached. This assumes that all communication can be seen by all. However it is far more complex to implement. Directory Based Approach- In a directory-based system, the data being shared is placed in a common directory that preserves the coherence connecting caches. The directory acts as a filter through which the processor must ask authorization to fill an entry from the primary memory to its cache. When an entry is distorted the directory either updates or invalidates the other caches with that entry. The MESI protocol is the best suited protocol to avoid cache coherence, where M stands for MODIFIED, E stands for EXCLUSIVE, S stands for SHARED and I stands for INVALID. Write Back Cache- Cache uses two approaches to write data back to main memory. Write Through Write Back It is the simplest one in which all write all operations are made to the main memory as well as to cache; ensuring main memory is always valid. Any other CPU- cache module can monitor traffic to main memory to update the data in its own cache, but always results in substantial memory traffic. It minimizes memory writes. In write back method modifications to data in the cache arent copied to the cache source until absolutely necessary. It is also known as copy back cache .In write back updates are made only in the cache. When an update occurs UPDATE bit are set associated with the slot and when the block is replaced it is checked whether the UPDATE bit is set or not. If it is set then data is written back to main memory. For Example- Intel processors since the 80486 uses back caching. Problem with this kind of implementation is that performance improvement comes with a slight threat that data may be vanished if the system crashes and more complex circuitry. Onboard Cache- Cache is a part of multi-level storage strategy which is used to increase the performance of CPU by providing a bridge in between the slower memory RAM and CPU. The cache that is the part of the CPU is known as off-board cache and the cache which is present on the motherboard is known as on-board cache. Generally L1 cache is referred as off-board and L2 is known as on-board. Sometimes L3 cache is also present on the motherboard along with L2. Now a days specific CPU vendors incorporates L2 as a part of CPU and L3 on motherboard. Implementation of Cache- In Cache, latency needs to be decreased and hit rate needs to be increased. Larger caches have better hit rates but longer latency. To address this problem, many computers use multiple levels of cache. The smaller and faster one is L1 cache built inside the CPU known as on-chip. If CPU needs data it first checks in L1; if it hits the processor proceeds at high speed. If the smaller cache misses, the next larger cache (L2) is checked, and so on, before external memory is checked. As the latency difference between main memory and the fastest cache has become larger, some processors have begun to utilize as many as three levels of on-chip cache. For Example- Intels Xeon MP Product code-named Tulsa, AMD Phenom II (2008), Intel Core i7 (2008) uses unified L3 cache. However Cache can be implemented by using Direct Mapped, Associative Mapping or Set-Associative Mapping. Virtual Memory- For the execution of programs memory required is more than what is actually present. So, the technique used to overcome this size limitation is Virtual Memory which is illusion of memory not physically present. The purpose is to allow multiple programs share same memory allowing splitting up of program into smaller pieces that can be loaded into different parts of memory whenever space can be found. Implementation of Virtual Memory- It is implemented using two techniques- one is Demand Paging and other one is Demand Segmentation. CPU generates address which is not physically present. These are the program addresses referred to as logical addresses, they dont have any existence outside the program, the actual memory addresses are known as physical addresses. These virtual addresses are mapped or interchanged to its corresponding physical address through a process known as mapping. A page table or look up table is maintained for this purpose. In Demand paging, valid-invalid bit scheme is used in which a valid-invalid bit is associated with each page. 1 for the page in memory and 0 for not present in memory. During address translation if bit in entry is 0 the page fault occurs. In virtual memory process are divided into chunks of equal size known as pages and chunks of memory in which pages are loaded are known as frames. In Demand Segmentation each row of the lookup table contains a starting address for a logical block of memory, together with the size of the block and a corresponding starting address in physical memory. Paging and Segmentation operates both the same. Problem of Fragmentation- Fixed Memory Partitioning- Operating system occupies fixed portion of main memory and partitions are created for multiple processes but not of same size, so there will be wastage of memory. In most cases the process will not acquire memory provided to it. Variable Memory Partitioning- In variables-size partitions, the memory allocated is as much it is required by process. However when processes are swapped in, small holes are created leading to problem of fragmentation. Compaction is done to solve problem, but it waste CPU time. In Virtual Memory demand paging method is implemented, in which memory is partitioned into equal chunks that are relatively small, and each process is divided into small fixed size chunks of some size. The lists of the frames that are free are maintained by the operating system. As the size of the pages and frames are same so suffer less fragmentation problem. The Memory Hierarchy The design constraints on a computers memory can be summed up by three questions: how much memory is available, how fast it is and how much it will cost? Following are the relationships between these tradeoffs- Smaller access time, greater cost per bit. Greater capacity, smaller cost per bit. Greater capacity, greater access time. Access Time Increase Transfer Rate DecreasesCPU Registers Cache Cost per/bit Decreases Capacity IncreasesRAM Magnetic Disk Figure -Memory Hierarchy Memory hierarchy helps in increasing the performance of processor, without hierarchy, faster process wont help and all time waiting on memory, It provides a large pool of memory that costs as much as the cheap storage near the bottom of the hierarchy, but that serves data to programs at the rate of the fast storage near the top of the hierarchy. It provides a faster access of data stored in the memory. If it is understand how the system moves data up and down the memory hierarchy, then application programs can be written so that data items are stored higher in the hierarchy, where the CPU can access them more quickly. Addressing modes affecting performance of system- It simplifies the memory references, produces variable length instruction format and instruction manipulates operands in memory directly. It adds convenience and flexibility to have modes of addressing, and it allows a large range of addressable memory while using a reasonable number of bits. Addressing modes make it easier to write certain type of programs such as loops that uses an index to address different entries in a table or array. For Example- Indexed Addressing. Now a days computer allows programmer accessible registers that manipulate data directly between registers.