Grieving Before a Death: Understanding Anticipatory Grief Essay

When my Grandmother was diagnosed with lung cancer, I was instantly crushed at thinking about all of the possibilities that there were for what could happen next; I could lose my Grandmother forever. After learning that the cause of my Grandmothers cancer was from smoking I told myself that I would never smoke and that I wanted to help people to stop smoking. When an individual first gets lung cancer they may start to have a persistent cough or a heavy feeling in their chest. Some of the effects of lung cancer are shortness of breath, wheezing, fatigue, and unexplained weight loss. One of the big causes of lung cancer is smoking, the more that you smoke the more likely it is that you will get lung cancer, also if you start smoking at a young age. My Grandmother and I had a very close relationship; I would always want to go to her house so that my Grandmother and I could cook together and also do arts and crafts. Whenever I would go visit my grandmother I would walk in and the smell of the fresh baked cookies was always the first thing to welcome you into her home. This was followed by the smell of fresh squeezed lemonade, when you would drink it you wouldn’t scrunch your face together because it was sour, my Grandmother had figured out the perfect recipe for lemonade. My Grandmother and I would always make lunch and dinner together, whenever I would go over she would teach me new things about the kitchen; she is the reason that I love to cook for my family whenever I get the chance. Having this close of a relationship with my Grandmother is what made it so hard for me when I found out she had cancer. I found out that my Grandmother was diagnosed with lung cancer around the time of my 14th birthday; I remember I had just come back from playing basketball with some of my friends because it was summer vacation. I walked into my house and my mother and father were seated in the living room on the couch, my mother was crying on my father’s shoulder. I was so confused I had no idea what was happening, I went over and asked my parents what was wrong. My mother told me to sit down and she began to tell me that my Grandmother had been diagnosed with cancer, when I heard this I felt like my heart had dropped to my feet but I had also remembered that some cancers were treatable so I asked my mom if it was. She told me that they had found the cancer too late and that my Grandmother was not going to live much longer, this is when I completely lost it my heart had dropped even further and my stomach started to hurt. I ran to my room as tears were pouring out of my eyes, I slammed my door and just fell on my bed crying, I didn’t know what to do. My parents came up and talked to me and said that it we would all get through this together and that we were going to go visit my grandmother in the hospital the next day. When I went to the hospital with my parents the next day to visit my Grandmother I was sad that I was going to the hospital to see her but at the same time I was also scared about what I was going to see. When we walked into the hospital it was as if someone dimmed down all the lights everywhere as if they were trying to make this already terrible place even worse. As I walked down the hallways to my Grandmothers room I saw all the other people in beds some just lying there some with family and some were watching TV. When I walked into my Grandmothers room I was frightened because of all of the different machines that were hooked up to her body, the first thought that went through my mind when seeing all of the machines hooked up to her body was her becoming inspector gadget. I went over to talk to her and it was difficult to hear her because of the beeping of the machines and it didn’t help that she was talking quietly. After about thirty minutes of us being there I asked my mother if we could leave because I didn’t like seeing my Grandmother when she was hooked up to all the machines. As we walked towards the exit of the hospital my eyes began to water again and once we left I burst into tears because I was so upset that out of all people this had to happen to my Grandmother the one person that I connected with most in my family. About six months had passed, I was now fourteen. School at started back up and I was trying to hide all of my feelings about my Grandmother from my friends so they wouldn’t also be sad. One day after school I came home as I always did but this time when I went inside my mom came to me and said that we were going to go say goodbye to my Grandmother, this made me feel terrible I didn’t want to say bye to one of my family member who I was so close with. We arrived at the hospital and once again I felt as if someone dimmed all the lights to make it feel even gloomier in the hospital. This time when we got to my Grandmothers room I didn’t even recognize her, because she had been through so much surgery to try and stay alive longer. This made me feel miserable because she had gone through all that treatment and pain throughout the last six months and she was still going to be taken away from me forever. Before I left the hospital that night I went to my Grandmother gave her a big hug and said goodbye, she gave me her cross necklace that she had been wearing and said to always keep this, she said that as long as I had this necklace she would always be with me. That is the biggest reason that I was able to move on because I would always see the necklace and then remember what she told me that she was always with me. After I witnessed firsthand what lung cancer could do to someone I began to tell people to stop smoking and also helped people quit. I would tell them the story about how when I went to see my Grandmother after all of her cancer treatments that I couldn’t even recognize her, after that a lot of them would want to stop. I would then talk about how this affected my life and how if they were diagnosed it could affect someone else’s life. In my survey it was shown that people who had family or friends diagnosed with lung cancer or killed by lung cancer were almost always affected by it.

Al Muerzo Resto Bar

He is the current General Manager of Shanghai-La Hotel in Manila. A She graduated com lauded at Southern Luzon State university, finished her master degree major in culinary arts. Currently the executive of golden dragon restaurant. , CYRIL He graduated at Southern Luzon State University. Major in bartering and cocktail mixing. He is the current owner of cheers and Jump He graduated at Southern Luzon State university, major in housekeeping mane alms to be the unique premier organization of casual dining Mexican restaurant.To serve freshly prepared high quality Mexican food in a relaxed and Steve atmosphere by a friendly and knowledgeable staff. We will do so by providing our guest with the most entertaining dining experience in flavor of Mexican cuisine. Toys sounds, energy, fun and flavors of being part of Lucian, Guenon that is so rich and colorful. We provide also who work with us a friendly, hospitable, cooperative and rewarding environment which is the best character of being Lu cian.Our vision is to provide the extraordinary flavor of Mexican, the premium quality food at a reasonable price with the commitment of promoting a unique twist of tastiness n every bite. Introduce the flavor and culture of a Mexican food item and refreshment. Is innovating the new food experience for Lucian though the constant pursuit of perfection. Maintain the hygiene and good facilities of restaurant and using the alternative materials for the better of Lucian, Guenon in no plastic policy.We strive to bring our guest the ultimate dining experience though excellent food, outstanding customer service and genuine hospitality. Is a place where people who truly enjoy real and authentic Mexican cuisine will find an enormous and extensive selection of dishes, appetizer, desserts and drinks from a various part of Mexico. Offers their guest very Mexicans experience ambiance even if where located in Lucian, Guenon, decorated a Mexican style, with bright colors pleasing to the eye, plants , fine art, music, and paper-art found in Mexicans festivals.

Sport: Teacher and Softball

Katelyn Poremski 3-8-13 English 100 Final Draft Softball is not just a Sport Softball is not just a sport to me. Sports can be used to learn life lessons in ways that they help shape attitude, portray passion, develop personality, and teach companionship. â€Å"When life throws you a curve ball† means that when life gives you obstacles to overcome. This is a quote relating to life incorporating baseball or softball in to it, using â€Å"curve ball† as a synonym for obstacles. Softball, along with other sports, is a great way to learn life lessons and is not just a sport.A sport, such as softball, is something that many people can benefit from. All ages, starting at 5 can enjoy the game of softball. We, as humans, benefit from learning, enjoying each others’ company, and overcoming and making progress in the game. These concepts can also be related to everyday life because we do each of these things every day. As people, we also need an outlet for our emotions and hardships that we face; softball can help us with this. Instead of taking out anger on another person, we can take our anger out on slamming the pitch and making a home run out of it.If you look at this from a more meaningful prospective, you can take your anger in life and always come out on top if you handle each situation in a positive and professional way. Softball also teaches people to have passion. I give a lot of recognition to the sport for teaching me to have passion not just in the game, but in life. Softball gave me something to be passionate about and also taught me to continue being passionate about other things such as my school work, and being successful.If I did not have softball in my life, I do not even know where I would be today because it was the first thing that I was passionate about. Since I was passionate about softball for all my life, it has given me great opportunities. The best opportunity it has given me is being able to go to a college that I love an d also being able to play softball. If I wasn’t as determined and passionate about softball I would have not gotten the opportunity to play at Point Park University. Being an athlete of softball has taught me so much in life. Having a great attitude while laying a sport was not always easy; however, I knew that if I did not have a good attitude I would not do well. This idea, also, carried over to everyday life. If I did not have a good attitude when I woke up in the morning was like if I did not have a good attitude going up to the plate when I was up to bat. I knew I would fail if I did not have this positive attitude. Softball also can teach people to express themselves. I would not be the person I am today if I did not have softball to help shape the person I am. It taught me to communicate as a teammate and be respectful to the other team.I also interpreted this in to my everyday life. If I did not communicate on the field, or if I did not communicate with my friends I w ould not have successful relationships with people. Also, if I did not respect people, people would not show any respect for me. In conclusion, softball has not only helped me in life with teaching lessons and shaping me as a person, but it has helped a lot of other people as well. Softball, along with other sports, is an exceptional outlet for dealing with emotions and hardships, let alone also teaching great life lessons.

Western Humanities Essay - How is the Palace of Versailles a fitting

Western Humanities - How is the Palace of Versailles a fitting symbol of the Age of Absolutism - Essay Example Louis chose to build the palace on the location of his father’s hunting lodge in Versailles. For the next two decades the town became an enormous construction site. Le Vau added new wings and faà §ades on every side until they completely enveloped the original hunting lodge. Illustrious additions included the Sun King’s magnificent bedroom (the Chambre du Roi), and the famous Galerie des Glaces (Hall of Mirrors). Construction of the Hall of Mirrors began in 1678. The principal feature of this famous hall is the seventeen mirror-clad arches that reflect the seventeen arcaded windows that overlook the gardens (Singleton 25). The mirrors are very decadent and decorated and they use natural light and candlelight to create awesome space. There is an Audience hall within that highlights Louis XIV’s enormous wealth and power. Ceiling frescoes illustrate Louis’s successes in war. Versailles became the home of the French nobility and the location of the royal court thus becoming the center of French government. Symbolically the central room of the long extensive symmetrical range of buildings was the Kings Bedchamber. All the power of France emanated from this center: there were government offices here; as well as the homes of thousands of courtiers, their retinues and all the attendant functionaries of court, thus keeping the lords close at hand and securing the French government in an absolute monarchy. All major avenues radiate from and to the palace courtyard. The King’s bedchamber is the actual radiating point, which highlights the king’s centrality. Buildings create an embrace and the gardens reflect the King’s mastery over the natural world. Exterior is classical; linear and geometric that emphasizes order and stability (Ranum 20). Louis weakened the power of the nobles by excluding them from his councils. In contrast, he increased the power of the government agents called intendants, which collected taxes and

Risk Management Plan in Hospital Essay Example | Topics and Well Written Essays - 6750 words

Risk Management Plan in Hospital - Essay Example Increased stakeholder confidence and trust Improved corporate and clinical governance Issues Legal requirements Malpractice and avoiding them Medical record Rights of patients Patient safety Definitions Identification and analysis of practices, incidents, and situations in a hospital that can cause financial risks for the hospital and medical staff and to develop strategies that aim to eliminate, avoid, or minimize risks. Aims To manage risks to staff and medical staff. To manage risks to service quality To manage risks to efficient services To manage risks to quality of services To manage risks to safety of patients, caregivers, and visitors To manage risks of failure to meet national and local prioritised governmental targets To manage risks to the hospital reputationStep 1: Communicate and Consult Communication and consultation with internal and external stakeholders in all steps of the process. Communication and consultation necessary to Establish the context Identify risks Analyse risks Evaluate risks Treat risks Stakeholder Identification Chairperson Quality Management System Committee Approves integrated risk management plan Carries out risk management activities through communication with all medical committees Clinic, Departmental Heads, and Directors Risk management within Departments Ensures staff risk management education, processes, and policies Ensures staff support and compliance with risk management plan Medical and Hospital Staff Members Responsible for acquiring and maintenance of knowledge and practice skills for safe care of patients Responsible for delivery of patient, carer, and family education regarding safety in care Responsible for errors leading to risk and perceived risks once identified Patients and...In this assignment, a risk management plan in the hospital setting will be worked out based on the learning module and material. A seven-step guide to risk management approach will be utilised and a risk management plan will be developed according to AS/ANZ 4360:2004 as described in HB436:2004. Different departments, people, equipment, facilities and functions make up an organization. This is also applicable in a hospital. Integration of these diverse components are possible through leadership skills which consists of communication and consultation. Management of healthcare associated risks are best accomplished through teamwork and through basic understanding of the problems. Changes required must be continuously managed, and this should address new risks that are continuously presented in the hospital environment. Evidence from risk management literature indicates that adequate risk management involves development of system improvement. Approaches based on embedded p lanning cycle of plan, do, check, then act are needed to implement in an organised and stepwise fashion. Identification and analysis of practices, incidents, and situations in a hospital that can cause financial risks for the hospital and medical staff and to develop strategies that aim to eliminate, avoid, or minimize risks. The infection control nurse or the staff epidemiologist may provide information on patient infection and also may help the risk manager to understand protocols on

Select a topic you would like to write ( writing about drama) Essay

Select a topic you would like to write ( writing about drama) - Essay Example American women in the 19th century were deterred from lustrous careers and they were denied self independence by the men. Their main sphere of operation in the society was restricted to the kitchen and the bedroom. Women did not have the right to vote or sit as members of the jury. Their opinions were considered of less importance in making essential decisions in the American education system, politics, economy, legislation and many others. Men in the US, in the 19th century, dominated all aspects of life in the American society except the nurturing of children and families; an activity that was allocated to women. In the play â€Å"Trifles† by Susan Glaspell, women are considered less educated, less equipped, less qualified and inferior to compete in the male dominated society. The men claimed the society advanced due to their intellectual property, strength, skills and ability to develop emotional intelligence in solving societal problems. George Henderson is a young but professional county attorney (Glaspell 455). He is called upon by local residents to investigate a murder case of Mr. John Wright, who was strangled by a rope in the wee hours of the night in his sleep. The county attorney has great respect for the law although he is quick to dismiss the female characters’ vested interest in non-essential details concerning domestic work. He also disparages the suspect, Mrs. Wright, for what he observes as lack of proper and normal house cleaning abilities allocated to women. Henry Peters, a middle aged man, is the area sheriff and Mrs. Peter’s Husband (Glaspell 455). He is interested in the murder case because it is his duty as a law enforcer to protect and serve the locals. Like the county attorney, he teases the female characters on their topic of conversation, which is the suspect’s quilt. He uses laughs light-heartedly at the women’s less

Economics for transport managers Essay Example | Topics and Well Written Essays - 2250 words

Economics for transport managers - Essay Example 637.25 Therefore, change in Real GDP between 2003-04 and 2004-05 will be given by; Change = 637.25 – 621.052 = 16.198 % change = (16.198/621.052)*100 = 2.6% (virtual.yosemite.cc.ca.us, 2011). Question 2 Consumer Price Index is largely used as a cost of living index, but in technical terms it is not. CPI measures average change over time in prices paid by consumers for a fixed basket of goods and/or services. Cost of living index would however measure all changes over time in the amount consumers need to spend to reach a certain level of utility or standard of living. CPI ignores vital changes in taxes, water and air quality, crime levels, consumer safety, and quality of education. Additionally, personal experiences may vary from what is indicated by the CPI, this is because an individual's purchasing pattern may differ from the standard market basket. Families which have children have different buying patterns than households of the elderly. The CPI also does not represent the experiences of rural dwellers. CPI measurement limitations fall into two broad categories. Sampling errors CPI only measures the prices of just a sample of items from a sample of shops in a sample of localities. Those items are chosen randomly by the using of Consumer Expenditure Survey (CES). Non-sampling errors These are usually more significant than sampling errors. They bias the CPI upwards or downwards, so the CPI would normally tend to report higher inflation than what consumers are actually experiencing. a) Invention of LCD TVs will lead to lower level Substitution bias Consumers usually tend to respond to changes in price by substituting relatively cheaper goods for goods which have become more expensive. This is referred to as substitution bias. Substitution bias can either occur within item categories (lower level bias) or across item categories (higher level bias). b) Introduction of GPS units in cars will lead to Quality Change Bias If a product is 5% better than its pr edecessor, and its price rises by 10%, then the Bureau of Labor Statistics will record a price increase of only 5%.This reflects what is known as Quality Change Bias. c) Increased personal computer purchase in response to decline in their price will lead to New Outlet/Discount Bias. A discount outlet or price fall gives consumers the opportunity to purchase the same goods at a lower price. The current CPI ignores these price changes. Totally taking the price changes into account usually biases the CPI downwards. d) Greater use of bicycles after price levels increase will lead to high level substitution bias. Since consumers are switching from using cars to using bicycles, this is referred to as higher level substitution bias. e) Higher fuel taxes will lead to high level substitution bias. Since consumers will switch from fuel to using other energy sources, this will be a case of higher level substitution bias. Question 3 Factors that affect the rate of savings in an economy: A case study of Bangladesh Saving is defined as the process of setting aside a certain amount of current income for use in the future, or any resources that may be accumulated in this way over a certain period of time. How much individuals in an economy save is affected by their personal preferences for future over their present consumption and also their expectations of their future income. If people

Athenian democratic system Essay Example | Topics and Well Written Essays - 1000 words

Athenian democratic system - Essay Example In the 5th century, BC Athens experimented direct democracy, this type of democracy system has two preconditions, a small community that is capable of attending debates and voting on issues, secondly, the economy of the community must give its citizens leisure to engage in politics and this type of democracy has rarely been attempted anywhere. The population of Athens conducted a census on the number of slaves and metrics, during the 4th century BC, the population of Athens comprised of some 300,000 people and city families amounted to 100,000 people 30,000 were male citizens, this increased in the 5th century BC which comprised of as high as 60,000 of male citizens. This is not in line with the preconditions for the set system of democracy that require a small community. In the 5th century, there were no limits on the power exercised by the assembly, if the assembly broke the law the only thing that would happen is to punish those who had agreed to the proposal. In the voting exerci se in this century voting required that one be physically present and voting was usually by show of hand, and due to a large number of people attending the people were divided into Quorum of 6000 people and given colored balls, this would increase irregularities in the voting process.In the same century, 10 fixed assemblies were introduced per year but later more meetings that were not fixed were introduced, political trials were introduced which were conducted in assemblies rather than in court.... In the voting exercise in this century voting required that one be physically present and voting was usually by show of hand, and due to the large umber of people attending the people were divided into Quorum of 6000 people and given colored balls, this would increase irregularities in the voting process. In the same century 10 fixed assemblies were introduced per year but later more meetings that were not fixed were introduced, political trials were introduced which were conducted in assemblies rather than in court. Attendance into assemblies was allowing only the first 6000 people to arrive and they had to pay. There was also the introduction of the law that excluded citizens who had property close to the city wall on the basis that they had influences on the outcomes of debates; this was because the practice of an invading army was at this time. This is evident in the attempt to name those who were did not participate in politics as 'idiots' meaning a person who is not interested in politics. In 406 BC an invasion of Sicily was carried out and although they won a group of generals refused to collect survivors, they were tried and sentenced together instead of one by one; they repented later and made up this by executing those who had executed the generals. Two coups interrupted the democratic rule and they are named by numbers in control and this was the four hundred in 411BC and the thirty in 404 BC. The new democracy established in 403 BC was less capable of rapid response to issues; the new democratic system involved responsibility was shifting from the assembly to the court, law being made by jurors and the decisions of

Convoy Operations Essay Example | Topics and Well Written Essays - 250 words

Convoy Operations - Essay Example Implementation of a good communication plan is a process that requires proper arrangement. The basic step for the implementation is ensuring that all the necessary components of effective communication are present. Once all the communication components have been put in place, the subsequent phase is choosing a common language that is convenient for the parties involved in the communication process. The language should be free from bias and the participants in the communication should have perfect knowledge about it. The final phase involves devising safety mechanisms for privacy purposes. Information safety is an essential consideration in the implementation of an effective communication plan. Receipt of information by unknown people might result in adverse consequences such as mission failure and poor performance in an operation. In summary, a good communication plan is necessary for smooth running of operations. In essence, before commencing an operation, all the necessary tools fo r effective communication should be well

Freedom of Expression Essay Example | Topics and Well Written Essays - 500 words

Freedom of Expression - Essay Example According to the research findings, it can, therefore, be said that as with various popular terms over the history of English language, the term â€Å"freedom of expression† has come to mean a wide variety of things and is definitely open to interpretation. It could mean freedom to act in any matter at any place whatsoever without regard to any standards. But it has been defined within certain limitations and exceptions, the most relevant to the case under consideration being defamation and obscenity. The woman with the t-shirt that caused her eviction from the plane was expressing a political opinion, and as such cannot be held responsible for defamation. For defamation to be established, it should also be shown to be causing tangible harm by the publication of an alleged fact, which is false. None of the images printed caused any actual damage to their subjects because the t-shirt made no false claims based on facts about the subjects depicted on it. An opinionated statement is not defamation, and a citizen reserves the right to express an opinion. Where the conflict comes in, however, is the display of profanity. The print draws a parallel with a popular movie title "Meet the Fockers", which was not banned for obscenity as in the title it was a clever pun and not much else. The t-shirt replaces the "o" with a "u", which makes it an explicit term, unsuitable for a captive audience aboard a plane, which might include minors. Possibly exposing minors to strong language is not an exercise in freedom of expression, but rather its curtailment for others involved. The venue of the incident was not public space, but private property owned by the South West Airlines, and as such, they retained the right to object to words unacceptable to them or other passengers.

The child with special needs Essay Example | Topics and Well Written Essays - 500 words

The child with special needs - Essay Example It is designed to meet the children’s special education needs, also allowing their participation in the decision-making process as much is possible. The SEN code of practice lends practical advice to LEAs in carrying out their duties to identify, assess and arrange for children’s SEN. A SEN tool-kit is given to all SEN providers to help them in the discharge of their responsibilities. It is also obligatory on schools to have Special Education Needs Coordinator to make provisions for the special children. The SENCO is assisted by a body of teachers who help him device strategies to defeat the hurdles to a child’s learning process and ensure that the child is able to reach the targets set for his improvement. SENCOs work in association with curriculum-coordinators at the school and ensure that the learning requirements of all children with SEN are given equal emphasis and priority. However, there is a gap between theory and practice, and this gap is wide enough to ponder on and question the very effectiveness of the legislation and other provisions in place. There remain large gaps in the outcomes achieved by children with SEN as a whole. Whereas in 2009, 50.7 per cent of all eligible pupils achieved 5ACEM, only 16.9 per cent of those with SEN did so.

Brock article 1 Essay Example for Free

Brock article 1 Essay (10) In understanding the idea presented by Brock as far as the idea of professional norms are voluntarily adopted, it is essential to point out the two elements that go together with it. The first one involves the creation of norms and values of a specific profession that is often imposed unto its members (Brock,). In this idea, the organization should also coordinate and collaborate with related agencies and institutions that specialize in such area. The second idea refers to the ability of each professional to directly adhere to the norms his/her organization provides (Brock,). It is through such entry that the individual takes on these facets accordingly. (11) The term conventional compromise provided by Brock in the article revolves around the question and issue of moral implications in the practice and facilitation of medicine. Under this facet, the term revolves around a â€Å"physician/pharmacist who has a serious moral objection providing a service/product to a patient/customer is not required to do so† (Brock, 2008, p. 194). At the same time, it is in here that there are several conditions that must also be looked into before saying that a particular case or issue has undergone a conventional compromise. These facets include (1) proper information so as to the facilitation of service/product, (2) proper referrals to other professionals who can provide, and (3) the second facet will not cause burden or difficulty for the patient (Brock, 2008). Under the first facet, there needs to be proper support and ground for the facilitation of a service or mechanism so as to fit the described example. It is in here that active communication about the practice must be given to any patient before declining its prescription or rendering of service (Brock, 2008). On the second facet, it requires the ability of any medical professional to have access to networks that have relatively opinions as theirs as far as the issue is concerned. This will then satisfy the condition that patients can seek for alternatives of providers of such device/service (Brock, 2008). Lastly, there must be careful consideration as far as its suitability and preference of patients are concerned. Since these ideas are prone to subjectivity, medical professionals must then establish these areas to connote the term conventional compromise (Brock, 2008) (12) In responding to the case of the pharmacist, Brock would probably argue against the notion set by the pharmacist. This is because this profession is part of an organization wherein the norms and objectives are stipulated accordingly (Brock, 2008). The action committed by the person is only a matter of moral conscience and does not solely revolve around the basic standpoint of the profession. Likewise, foregoing the facilitation of contraceptives as an option disregards the fact that the organization he/she is part of considers this as an option for practice (Brock, 2008). These are some tenets that is included when she agreed to be part of the institution and agency and collaborated with standards provided by concerned agencies (Brock, 2008). Seeing this disposition, Brock would then argue to the pharmacist that he/she practice a conventional compromise wherein she will actively provide and designate a professional who may think and view the issue differently from his/her perspective. This a way to protect both the opinion and value set of the pharmacist and ability of the patient to recognize the possible options available for him/her (Brock, 2008). By doing this, it can prevent conflict and questions surrounding the ability of such medical professional to provide numerous options for patients despite the differences in opinions and values. Reference Brock, D. W. (2008) Conscientious refusal by physicians and pharmacists: who is obligated and why? in Springer Science. Retrieved June 25, 2009. 187-200.

Rapid Growth Of Wireless Communication Information Technology Essay

Rapid Growth Of Wireless Communication Information Technology Essay It is our pleasure as a group to thank our lecturer Mr Mohd Hairi Bin Halmi for giving us the opportunity to do this research as it helped us in exploring our potentials in the filed of Communications Networks and has also taught us the various principles involved in the study of Wimax Network Architecture. Many thanks go to the entire group for the time spent in discussing the problem and sharing ideas. ABSTRACT The rapid growth of wireless communication and its pervasive use in all walks of life are changing the way we communicate in all fundamental ways. It is one of the most vibrant areas in the communication field today. True Wireless communications have gained a momentum in the last decade of twentieth century with the success of second Generation (2G) of digital cellular mobile services. Worldwide successes of Global System for Mobile Communications (GSM), Interim Standard 95 (IS-95), Personal digital Cellular (PDC) and digital Advanced Mobile Phone System (IS-54/136) have enabled pervasive ways of life for the new information and communication technology era. Second Generation (2G), 2.5G, and Third Generation (3G) standards of mobile systems are being deployed everywhere worldwide. Worldwide Interoperability for Microwave Access (WiMAX) is a standards-based wireless technology for providing high-speed, last-mile broadband connectivity to homes and businesses and for mobile wireless networks. WiMAX is similar to Wi-Fi but offers larger bandwidth, stronger encryption, and improved performance over longer distances by connecting between receiving stations that are not in the line of sight. Internationally, WiMAX has been finding a home among emerging markets that dont have a decent wired infrastructure. WiMAX is essentially a next-generation wireless technology that enhances broadband wireless access. Therefore, it can be said that WiMAX is a revolutionary wireless technology that, we believe, could change the wireless technology landscape considerably. CONTENTS 1. Introduction à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦..5 2. Alamouti Space-Time Codeà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.6 2.1 Working Principle of Alamouti Coding Schemeà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦..7 2.1.1 The encoding and Transmission Sequenceà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦..7 2.1.2 The combining Schemeà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.8 2.1.3 The maximum likelihood detectionà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.8 3. Strengths and Weaknesses of Alamouti Schemeà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.8 3.1 Strengthsà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.8 3.2 Weaknessesà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.9 4. Other Competing MIMO Algorithmà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦9 4.1 Space-Time Trellis Codesà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦9 4.2 V-BLAST Algorithmà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦..9 5. Newer Scheme based on Alamouti STBCà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦10 6. Conclusionà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦..10 Referencesà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦11 List of figures 2.1 Block diagram of Alamouti space time encoderà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.6 2.2 BER plot for 2 transmit 2 receive Alamouti STBC à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦.à ¢Ã¢â€š ¬Ã‚ ¦6 1. INTRODUCTION 1.1 Background The development of innovative Wireless communication systems has marked the start of the new Era. The transition from fixed to Wireless really started during the Internet revolution. The Internet world evolved as an exchange mechanism for electronic data, but soon sparked worldwide demand for anytime/anywhere computing and communications. In wireless technology, data is transmitted over the air, and it is an ideal platform for extending the concept of home networking into the area of mobile devices around the home. Consequently, wireless technology is portrayed as a new system that complements phone-line and power-line networking solutions From the late 1970s until today, there have been three generations of wireless systems based on different access technologies:  · 1G wireless systems, based on FDMA (frequency division multiple access): The first generation of wireless systems was introduced in the late 1970s and early1980s, and was built for voice transmission only. It was an analog, circuit-switchednetwork that was based on FDMA air interface technology.  · 2G wireless systems, based on TDMA (time division multiple access) and CDMA (code division multiple access): The second generation of wireless systems was introduced in the late 1980s and early 1990s with the objective of improving transmission quality, system capacity, and range. Major multiple-access technologies used in 2G systems are TDMA and CDMA. These systems are digital, and they use circuit-switched networks.  · 3G wireless systems, mostly based on W-CDMA (wideband code division multiple access):The 3G wireless systems are digital systems based on packet-switched network technology intended for wireless transmission of voice, data, images, audio, and video. This started in the mid 1990s and is ongoing developments until today. The various revolutionary developments seen during this phase are: the UMTS, the CDMA2000. This phase of revolution is ongoing till today where we can see various new wireless technology innovations such as the Wi-Fi, WiMax, etc. The entire evolution and progress of all these 3 generations of wireless systems has led to the internet revolution that we enjoy today. Today, we live in a world where communication has evolved into a landscape that a person in 1990 would scarcely recognize. TALK A LIL MORE ON HOW WIMAX EVOLVED-introdn needs 2 include more abt wimax According to WiMAX forum Wimax Technology is a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL. Wimax Technology will provide fixed, nomadic, portable, and, eventually, mobile wireless broadband connectivity without the need for direct line-of-sight to a base station. In a typical cell radius deployment of 3 to 10 kilometres, Wimax Forum Certified systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications. WiMAX has the potential to provide widespread Internet access that can usher in economic growth, better education and health care, and improved entertainment services. WiMAX can be described as a framework for the evolution of wireless broadband rather than a static implementation of wireless technologies. Therefore, in this era, we can consider WIMAX as a wireless technology revolution. 1.2 PURPOSE Objective: Through this report, our main objective is to study the WiMAX Network Architecture and the evolution of WIMAX in the internet industry as a wireless technology revolution. 1.3 SCOPE Our report covers all the important aspects of the network architecture of WiMAX. We mainly focussed on the practical uses of WiMAX in the world of internet hence making our scope limited to this. We used various resources for this research from internet to books to journals. 2. WIMAX NETWORK ARCHITECTURE 2.1. Features 2.2 Description 3. Case Study on.. (Includes analysis) 4. Advantages And Disadvantages 5. Other Competing Networks 6. Conclusion 7. Recommendation

Impact Of Organisational Culture In The Hairdressing Sector Commerce Essay

Impact Of Organisational Culture In The Hairdressing Sector Commerce Essay Culture is quite difficult to define, when we speak of culture we know what it is and what / how it is manifested in an organisation but a clear, unambiguous definition eludes us! This is because culture has different meanings, depending on life experiences, background, religion, belief and values. Nonetheless, there are several influential writers on culture including Hofstede, Trompenaars, Hampden Turner, Schein, Ouchi, Schneider and Barsoux, Deal and Kennedy and Handy, whose work is still recognised in contemporary organisations. However, Handy, described culture in organisations as the way we do things around here. These things are accepted norms and values of an organisation, developed over time into expected behaviour patterns. They generally emanate from top management level of the Organisation; but this is not always the case (Managing in Organisation, ABE Study Manual, 2008). Even though it is reasonable to infer that culture can influence behaviour, this relationship is over-simplified by strong culture models. According to Guy S. Saffold, III, (1988), if researchers are to precisely examine the link between culture and performances, they must assess other internal processes that affect performance. Although, the literature on organisational culture and its correlation with business performance is rich and diverse, there are only a few empirical studies that profoundly explored this relationship. Furthermore, these studies simply focused on the impact on culture on medium to large organisation but few or little has focused specifically on small businesses in the hairdressing sector. For this reason, this project will seek to Assess organisational culture using several theoretical frameworks Evaluate if there is a link between organisational culture and performance in small hairdressing businesses Identify the advantages and disadvantages of having a strong culture in hairdressing business Introduction It is not the physically powerful, hasty and most ferocious who survive. It is the most flexible Charles Darwin Organisations operate in a very unpredictable environment; hence survival depends on the organisations ability to exploit resources; collaborate and adjust. There are extensive demonstrations (Kotter and Heskitt, 1992) that strong cultures support performance by creating value to stakeholders through consistency and high quality goods and services. Deshpandà © and Webster (1989) by exploring several studies in organisational behavior, sociology, and anthropology, defined organisational culture as a pattern of shared values and beliefs that aid individuals understand organisational functioning and thus provide them with the norms for behavior in the organisation (p. 4). Following these and other authors (e.g., Chatman and Jehn, 1994), organisational culture is conceptualized and quantified in terms of widely shared and strongly held values. The elements of organisational culture range from basic assumptions through values and behavioral norms to actual patterns of behavior (Rousseau, 1990). Values typically act as the defining elements of a culture, and norms, symbols, rituals, and other cultural activities revolve around them (Enz 1988). When the members of a social unit share values, an organisational culture or value system can be said to exist (Weiner 1988). According to (Denison, 1984), if an organisation possesses a strong culture by exhibiting a well-integrated and effective set of specific values, beliefs, and behaviors, then it will perform at a higher level of productivity. On the other hand (Kotter Heskitt 1992) concluded that the statement that a strong culture is the basis for outstanding performance appears to be incorrect. Burt et al (1999) agreed with Kotter and Heskitt to an extent but carried their analysis further. They suggest that the relationship between culture and performance depends upon the degree of rivalry. Their research showed that culture is important depending on the competitiveness of the market. They believed that market and culture go hand in hand. If firms have low rivalry in the market then strong culture is not an advantage. Furthermore in some markets where there is competition there is still no correlation between culture and performance. Equally, (Sorenson, 2002) believed that strong cultures often hinders flexibility which is required for survival especially during sporadic transformations, such as we face currently, organisations with strong culture are most often crippled by their own organisational DNA. Whether or not culture is an economical advantage depends upon the market situation. In the retail sector, culture may be a competitive asset. In a multifaceted market, culture appears to have no effect on economic performance (Douglas N. Ross, 2002). It all depends. However, gaining a profound understanding of culture is essential in order to find out whether there is a link between organisational culture and performance. The next chapter begins with an overview of culture. An overview of organisational culture The term organisational culture was used for the first time in the academic literature by Pettigrew in 1979 in the journal Administrative Science Quarterly. Organisational culture was used to explain the economic successes of Japanese firms over American firms by motivating workers who were committed to a common set of core values, beliefs and assumptions (Denison, 1984). One of the most important reasons that explain the interest in organisational culture is the assumption that certain organisational cultures lead to an increase in organisational financial performance. According to Peters and Waterman (1982) successful organisations possess certain cultural traits of excellence. Ouchi (1981) showed a positive relationship between organisational culture and productivity. We have seen many definitions of culture, earlier in the analysis, however, Edgar Scheins defined organisational culture more specifically as the basic assumption and beliefs that are shared by members of an organisation, that operates unconsciously and define in a basic taken-for-granted approach, the routine that build ups over time. In other words, culture is about that which is taken for granted but nonetheless contributes to how group of people respond and behave in relations to the issues they face. It therefore has important influences on the development and change of organisational strategy (Johnson and Scholes, 2008). According to Johnson and scholes (2008) , the culture of an organisation is often concevied as consisting of four layers which would be disucussed in Fig.1.below. Fig.1 The four layers as described by Johnson and Scholes (2008) are Firstly, values are easily identifiable in an organisation, and are often documented statements about an organisation mission, objectives or strategies. However, they can be vague. Secondly, beleifs are more specific but again they can typically be discerned in how people talk about issues in the organisation. Thirdly, behaviors are the day to day way in which an organistion operates and can be seen by people both inside the organisation. This includes the work routines, how the organisation is structured and controlled and softer issues around symbolic behaviors. Finally, taken for granted assumption or paradigms are the core of an organsational culture. They are the facets of an organisations life which people find difficult to identify and explain. The paradigm can underpin successful strategies by providing a basis of common understanding in an organisation, but can also be a major problem (Johnson and Scholes, 2008). Similar conceptions of culture are offered by Dandridge et al. (1980), Pettigrew (1979), as well as Trice and Beyer (1984). Schein (1990) suggests that cultures are created through the way organisations have reacted to important incidents in the past and have thus evolved certain norms, as well as through the identification of organisational members with their leaders. As such, organisational cultures are perpetuated through the process of socialization of new members into the organisation. Hofstede (1980) identified four dimensions of organisational culture: power distance, uncertainty avoidance, individualism /collectivism and masculinity / femininity. Later, Hofstede (1998:238) defined organisational culture as a concept that has the following features: à ¢Ã¢â€š ¬Ã‚ ¢ holistic (describing the synergy); à ¢Ã¢â€š ¬Ã‚ ¢ historically determined (reflecting the past,); à ¢Ã¢â€š ¬Ã‚ ¢ related to the things such a customs and symbols, (these are studied by anthropologist). à ¢Ã¢â€š ¬Ã‚ ¢ socially constructed (moulded and preserved by the collection of individuals who collectively form the organisation); à ¢Ã¢â€š ¬Ã‚ ¢ soft, and; à ¢Ã¢â€š ¬Ã‚ ¢ difficult to change. This overview on culture provides useful insight in understanding culture from a theoretical standpoint which would be useful in this research analysis. Literature Review It is arguable that the academic acceptance of culture, without the usual bickering and scepticism associated with new concepts, is a major indication of the perceived importance of the concept (Alvesson, 1990). However, this is not to infer that there is consensus on the meaning and relevance of the concept. On the contrary, there is widespread disagreement on the definition and scope of the organisational culture concept (Ogbonna and Harris, 1998a). However, the link between organisational culture and high performance in an organisation has been very debateable; because there is little empirical evidence to suggest a direct link between culture and an organisational performance especially in small businesses. Of course failure to establish an empirical link does not mean that no such link exists. According to (Skà ¶ldberg, 1990), empirical study in the area is very difficult to carry out. Not only is culture difficult to capture but so is performance. While it has been suggested that culture accounts for the economic performance of various countries (Hofstede, 1980; Hofstede and Bond, 1988), the idea of corporate culture also serves to provide a basis for understanding the differences that may exist between successful companies operating in the same national culture (Schein, 1990). Peters and Waterman (1982), for example, believed that successful organisations possess certain cultural traits of excellence. Ouchi (1981) presented a similar relationship between corporate culture and increased productivity, while (Deal and Kennedy 1982) argued that the performance of an organisation is dependent on the degree to which the values of the culture are widely shared, that is, are strong Nevertheless, the claim that organisational culture is linked to performance is founded on the perceived role that culture can play in generating competitive advantage (Scholz, 1987). Reed and DeFillippi, (1990) added that sustainable competitive advantage arises from the creation of organisational competencies which are both superior and imperfectly imitable by competitors. Similarly, (Bryan Adkins, 2004) suggests that culture does matter, and a strong, effective culture will outperform a weak culture every time. In a study done by (Coogan Partners Apos, 2005) they concluded also that companies who out-perform their competitors have specific cultural differences. Early researchers who link culture to organisational performance are unequivocal in their claims. An illustration of this is derived from the works, (Deal and Kennedy, 1982; Ouchi, 1981; Pascale and Athos, 1981; Peters and Waterman, 1982) who argue that successful organisations are distinguished by their ability to promote cultural values which are consistent with their chosen strategies. Although this view met with initial popularity in the 1980s, the principal tenets of the argument have been subjected to extensive criticism from writers such as (Legge, 1994; Ogbonna, 1993; Willmott, 1993). By the 1990s, researchers assessing the links between culture and performance were more cautious. For example, Gordon and DiTomaso (1992) and Denison (1990) both propose that there is a link between certain organisational culture characteristics and performance but each add a number of conditions. In particular, they note that culture will remain linked with superior performance only if the culture is able to adapt to changes in environmental conditions. Besides, the culture must not only be strong as suggested by writers such as Deal and Kennedy 1982, Ouchi, 1981 and Peters and waterman, 1982) but it must also have unique qualities which cannot be imitated. However, more recently, it has been suggested that the relationship between culture and performance, is fragile (Ogbonna and Harris: Leadership style organisational culture and performance 769 (Hop et al., 1992; Lewis, 1994; Lim, 1995; Ray, 1986; Willmott, 1993). Sorenson, (2002) argued that continuous change; such as we encounter presently, strong cultured organisations are most often crippled by their own organisational DNA. According to (Dean Mcfarlin), when organisation with well-defined culture is operating in somewhat steady milieu, their core competences and strategies are in alignment with the business objectives. In such environments, well structured cultures enable an organisation to function like new machines, sailing down by outstanding performance. That said, if the environment becomes extremely unstable, companies must become innovative and efficiently exploit resources to stay on top. However, companies with well-built cultures may find it difficult to adapt to such extremely unpredictable situation. A well-defined culture makes it easy for employees to clutch onto the existing status quo and, simultaneously, less willing and enthusiastic about exploring new ways of performing the task. The underlying principle is that a strong organisational culture may be something of a two-fold sword. When you believe in the existing culture of the organisation, it becomes hard to replace them with new id eas even if it a source of competitive disadvantage. Some researchers believed that strong cultures may, however, impose a level of stability on organisations, and such stability has mixed implications for performance. Denison and Mishra (1995) found that stability traits such as a firms mission, consistency, and normative integration, were related to its profitability. Specifically, organisations with strong cultures had greater returns on investments, but only in the short run; after three years the relationship between cultural consistency and performance became negative (Denison, 1990). Sorensen found that strong culture organisations were more financially successful in stable environments and less successful in dynamic environments. Thus, while cultural strength and stability may enhance organisational performance in the short run and in stable environments, they may also inhibit an organisations ability to change, adapt, or innovate. Finally it is not possible to say that organisational culture in general or a specific type of culture has a clear and simple effect on performance but this does not mean that there is no connection between culture (however defined) and performance; on a general level there certainly is. Whipp et al. (1989: 582) believed that elements of culture may supply vital links between the rational aspects of policy and the subjective, less tangible features of employees behaviour exactly because of the way values pervade an enterprise. Propositions of how culture brings about distinct outcomes, however, often seem problematic. Either the causal link is speculative and uncertain or it is difficult to separate culture from outcome. Some of the authors treated in some depth above (Schein and Louis), run into problems when they claim correlations between organisational culture and what they treat as other elements. However it is difficult, even misleading, to say that the culture as a whole has been a significant cause of financial returns. Despite the claims for a link between organisational culture and performance is very rich and diverse, few studies appear to have actually examined the existence as well as the nature of this relationship. Strong cultures and its influence on performance are questionable in the current dynamic environment, besides some theorists query the universality of a culture-performance link. Research design and Methodology The subject of organisational culture and its influence on performance has attracted extensive interest from many scholars, students and researchers alike, but their interest has focused extensively on medium to large businesses but little has focused directly on the influence of organisational culture on the performance of small businesses, hence my interest in the subject matter. This research would be conducted using both primary and secondary research methods of data collection. The primary method proposed is semi-structured interview and the secondary methods would be text books and journal articles. After careful analysis of past literature on culture and performance, qualitative research design such as interview was clearly appropriate. Consequently, a sample of 30 businesses in the hairdressing industry would be selected via the utilisation of a systematic random selection procedure with appropriate units to be selected on a variety of criteria, including company turnover, date of registration, and number of employees. In order to limit potential measurement error, responses would be required from key Personnel, knowledgeable in a variety of tactical and strategic activities (Bowman and Ambrosini, 1997; Snow and Hrebiniak, 1980; Hambrick, 1981; Nayyar, 1992). Undeniably, a plethora of prescriptive articles and books such as Alan Bryan Emma Bell (2003) Business Research Methods, proposed useful suggestions on effective research design, formulation and execution which would be helpful in this research and as a result improve content validity and reliability and most importantly covers ethical issues associated with research. The efficient and effective administration and implementation of the research method (semi-structured interview) is key and the researcher is aware that this could influence the overall success of data generation and the achievement of satisfactory responses (Dillman, 1978; Churchill, 1991; Faria and Dickinson, 1992). A pilot study will be carried out to pre-test the research instrument (Baker 1994: 182-3). The study would be undertaken because it would establish whether the sampling frame and technique is correct. Semi-structured interview would be used; this would allow questioning to be guided as is required also many points that needed to be made clearer would be done much more easily than in something like a mailed questionnaire (Frey and Oishi 1995:03). However, according to (Breakwell, Hammond and Fife-Schaw 1995:238) this technique heavily relies on the respondent being willing to give accurate and complete answers. Additionally, it gives the freedom to explore general views or opinions in more detail. On the other hand this method would be very time consuming and expensive. Finally a tape recorder would also be used so that the data could be referred to at a later date and thus make the analysis more reliable. Conclusion Nowadays, organisations operate in a dynamic environment and they must learn to adapt in order to survive. According to the literature review some researchers such as (Ouchi, 1981) believed that a strong culture is linked to high performance in an organisation. Whereas, Writers such (Kotter Heskitt 1992) concluded that the statement that, well-built culture produce outstanding performance emerge to be completely incorrect. Most interestingly, the culture-performance relationship is seen as a two-fold sword (Dean Mcfarlin). On completion of this project there would be light on whether there is an organisational culture-performance link in small hairdressing businesses. References Bryan, Alan Bell Emma (2003) Business Research Methods: Oxford University Press New York. Johnson, Gerry, Scholes, Kevan Whittington, Richard (2008) Exploring Corporate Strategy: Text and Cases 8th Edition: Pearson Education Limited Association of Business Executives study manual, Managing in Organisation, 2008: ABE RRC Adkins, Bryan, Sr., and Stewart, Cindy, 2004 Shift Organisational Culture to Improve Organisational Performance, viewed on 29th January, 2010 Mcfarlin, Dean 2002, Strong culture can be double-edged sword, Dayton Business Journal, viewed on the 3rd February, 2010 http://www.allbusiness.com/company-activities-management/management-corporate- Culture/5462715-1.html viewed on 29th January, 2010 http://www.denisonconsulting.com/Libraries/Resources/Adkins-2004-Shift-Culture.sflb.ashx, viewed on 29th January, 2010 http://www.aber.ac.uk/media/Students/aeo9702.html, viewed on 29th January, 2010 http://www.culturestrategyfit.com, viewed on 29th January, 2010 http://marketing.byu.edu/htmlpages/ccrs/proceedings99/webster.htm, viewed on 29th January, 2010 http://www.jstor.org/pss/258374, viewed on 29th January, 2010 The Academy of Management Review, Vol. 13, No. 4 (Oct., 1988), pp. 546-558 (article consists of 13 pages), viewed on 29th January, 2010 http://www.accessmylibrary.com/article-1G1-17520695/examining-organizational-culture-and.html, viewed on 29th January, 2010 http://steconomice.uoradea.ro/anale/volume/2008/v4-management-marketing/057.pdf, viewed on 2nd February, 2010

The Persian Letters by Montesquieu :: Persian Letters Montesquieu

  Ã‚  Ã‚  Ã‚  Ã‚  The book The Persian Letters by Montesquieu is a fictional novel that was written by the author so he could comment on the society in which he was living. This novel has served as a good example of the ideas that were present during the early Enlightenment. There are many ideas and themes that Montesquieu discusses by using the point of view of two Persian travelers in Europe that correspond with letters to each other and others back in Persia. By using a foreigner's perspective, Montesquieu was able to present things in a way that gave a much more lasting effect then if he had used two Frenchman commenting on their own country. Through the many themes in the book, one that is prevalent is Montesquieu's attitude and ideas towards religion. The use of a Muslim Persian is quite effective in commenting on Christianity because the religions are alike in that they are both monotheistic, which can be good for drawing comparisons. Montesquieu believes that God is just an d obedience to his laws is crucial. He does not see anything wrong with having different religions because all of them have precepts that are useful to society. All the different religions promote obedience to the law and require their followers to be good and just. He believes that even if there was no God these ideas can still help society function correctly. Montesquieu also criticizes numerous aspects of established religion and shows that he sees it as useless and so he responds to it with indifference. He feels God's precepts are of the greatest importance and that is exactly what has been lost from the established church. Montesquieu's beliefs were also similar to many of the other philosophes. They criticized the established church and 'certainly opposed the ritual forms of both Catholic and Protestant worship'; (O'Brien et al 631).   Ã‚  Ã‚  Ã‚  Ã‚  One of Montesquieu's key arguments throughout the novel when dealing with religion is that God's precepts are more important then anything else. He says 'for, whatever religion one may have, obedience to the laws, love of mankind, and respect for one's parents are always the principal acts of religion'; and no matter what your religion is, you should acknowledge 'God loves mankind, since he founded a religion to make them happy; †¦ and you are certain to please him by loving them also; that is to say performing all the duties of charity and humanity towards them, and in not violating the laws under which they live'; (101).

Holden Caulfield in The Catcher in the Rye :: essays research papers

Holden Caulfield can be analyzed through his thoughts, actions and circumstances which surround his everyday life. Holden acts like a careless teenager. Holden has been to several prep-schools, all of which he got kicked out of for failing classes. After being kicked out of the latest, Pency Prep, he went off to New York on his own. Holden seems to have a motivation problem which apparently affects his reasoning. The basis of his reasoning comes from his thoughts. Holden thinks the world is full of a bunch of phonies. All his toughs about people he meets are negative. The only good thoughts he has are about his sister Phoebe and his dead brother Alley. Holden, perhaps, wishes that everyone, including himself, should be like his brother and sister. That is to be intelligent, real and loving. Holden’s problem is with his heart. It was broken when his brother died. Now Holden goes around the world as his fake self, wearing his mask. Holden is looking for love, peace and understa nding. He is scared to love because he is afraid he might lose it like he did with his brother. That is the reason for Holden's love of the museum, he feels safe because it never changes it always stays the same. Holden is troubled with the pain of death, it effects every aspect of his life causing him to not care about the future, himself or anyone, except Phoebe and Alley.   Ã‚  Ã‚  Ã‚  Ã‚  The theme of alienation is demonstrated by Holden. He alienates himself from the world because he fears change and false people, he wants love and security. Holden alienates himself from all the changes that occur around him. Holden isolated himself when he didn't go down to the seats for the final football game at Pency. He isolates himself because he gets kicked out of all the schools he goes to. All those changes scare Holden off, he becomes afraid to feel secure. Holden also alienates himself because he trusts no one, he thinks everybody is phony. When Holden was in a bar and he lied and said he had to go, just to not talk to his brothers old girl friend; Holden thought she was annoying and left the bar even though he didn't feel like it. Holden is also alienated by his inability to love. Holden seems not to care about his old girlfriend Sally, he told her he loved her but he didn’t mean it.

The Effects of Internet Addiction to Lifestyle and Dietary Behavior

Nutrition Research and Practice (Nutr Res Pract) 2010;4(1):51-57 DOI: 10. 4162/nrp. 2010. 4. 1. 51 The effects of Internet addiction on the lifestyle and dietary behavior of Korean adolescents Yeonsoo Kim *, Jin Young Park *, Sung Byuk Kim , In-Kyung Jung , Yun Sook Lim and Jung-Hyun Kim 1 2 1 2 3 4 5 4 § School of Human Ecology, Nutrition and Dietetics Program, Louisiana Tech University, LA 71272 USA Graduate school of Education, Chung-Ang University, Seoul 156-756, Korea 3 Ministry for Health, Welfare and Family Affairs, Seoul 110-793, Korea 4 Department of Home Economics Education, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 156-756, Korea 5 Department of Food and Nutrition, Kyung Hee University, Seoul 130-701, Korea Abstract We performed this study to examine lifestyle patterns and dietary behavior based on the level of Internet addiction of Korean adolescents. Data were collected from 853 Korean junior high school students. The level of Internet addiction was determined based on the Korean Internet addiction self-scale short form for youth, and students were classified as high-risk Internet users, potential-risk Internet users, and no risk Internet users. The associations between the students’ levels of Internet addiction and lifestyle patterns and dietary behavior were analyzed using a chi-square test. Irregular bedtimes and the use of alcohol and tobacco were higher in high-risk Internet users than no risk Internet users. Moreover, in high-risk Internet users, irregular dietary behavior due to the loss of appetite, a high frequency of skipping meals, and snacking might cause imbalances in nutritional intake. Diet quality in high-risk Internet users was also worse than in potential-risk Internet users and no risk Internet users. We demonstrated in this study that high-risk Internet users have inappropriate dietary behavior and poor diet quality, which could result in stunted growth and development. Therefore, nutrition education targeting high-risk Internet users should be conducted to ensure proper growth and development. Key Words: Internet addiction, dietary behavior, diet quality, adolescents Introduction8) The Internet has become an important tool for social interaction, information, and entertainment [1]. However, as the Internet has moved into homes, schools, Internet cafes, and businesses, the prevalence of Internet addiction has been increasing rapidly. Internet addiction is characterized as poorly controlled Internet use, and can lead to impulse-control disorders [2]. Recently, Internet addiction, especially among adolescents, has been recognized as an important social issue in various countries because of the high prevalence of depression, aggressive behavior, psychiatric symptoms, and interpersonal problems associated with this addiction [3,4]. The incidence of Internet addiction in adolescents was estimated to be approximately 11% in China [2], 8% in Greece [5], and 18. 4% in Korea [1]. Adolescents are more vulnerable to Internet addiction than adults, and the social performance, psychology, and lifestyle habits of Internet addicts can be affected by this addiction [6]. Numerous cross-sectional studies have shown that Internet addiction has an adverse effect on several lifestyle-related factors in adolescents; it can result in irregular dietary habits, extended periods of time spent on the Internet [7], physical inactivity, short duration of sleep [2], and increased use of alcohol and tobacco [2,8,9]. Some studies have reported that the change in lifestylerelated factors caused by heavy Internet use could have an adverse impact on the growth and development of Internet addicts [2,7]. Nutritional status also plays a crucial role in growth and development during adolescence. Several studies have shown that malnutrition or unbalanced nutritional intake can reduce weight gain and decrease leg length in adolescents [9,10]. Optimal nutrition is therefore important for adolescents to grow and develop properly. Moreover, once dietary habits are formed during childhood, they tend to be carried on throughout adulthood, thus teaching adolescents to develop healthy eating habits is of critical importance [11]. Numerous studies have showed associations between Internet addiction and mental health problems, such as depression and psychiatric symptoms, among adolescents. However, information on the effects of Internet addiction on the dietary behavior of * Yeonsoo Kim and Jin Young Park are Co-first authors.  § Corresponding Author: Jung-Hyun Kim, Tel. 82-2-820-5278, Fax. 82-2-817-7304, Email. [email  protected] ac. kr Received: November 17, 2009, Revised: February 16, 2010, Accepted: February 16, 2010 ? 2010 The Korean Nutrition Society and the Korean Society of Community Nutrition This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. rg/licenses/by-nc/3. 0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 52 The effect of Internet addiction on dietary behavior adolescents is limited. Therefore, in this study, we examined the dietary behavior of Korean adolescents according to their level of Internet addiction. income per month, and the education level of the parents. A lifestyle habit questionnaire assessed the regularity of bedtime, sleep disturbance, and the use of alcohol and tobacco. Dietary behaviors and diet quality The dietary behavior questionnaire assessed recent changes in meal size, appetite, eating speed, frequency and reasons for skipping meals, and the frequency, type, and reasons for snacking. Diet quality was assessed by a 10-item mini-dietary assessment index. The mini-dietary assessment index was used to assess overall dietary quality based on the 2005 Dietary Guidelines and Food Tower for Koreans [13]. This index includes four food groups that should be consumed, four food groups that limited amounts of should be consumed, and two items regarding varied and regular diet. Responses to food items of which sufficient amounts should be consumed were reported using a 5-point Likert scale where 1=seldom, 3=sometimes, and 5=always. Responses to food items of which limited quantities should be consumed were also reported using a 5-point Likert scale where 1=always, 3=sometimes, and 5=seldom. The maximum possible score for diet quality is 50. In this study, diet quality was defined as â€Å"good† if the total score was greater than or equal to 30 [14]. Statistical analyses All analyses were performed with a significance level of ? =0. 05 using the SPSS software package version 12. (SPSS Inc, Chicago, IL, USA). Relationships between levels of Internet addiction and socio-demographic characteristics, lifestyle patterns, and dietary behavior were analyzed using the chi-square test. The relationship between dietary quality and level of Internet addiction based on the self-scale rating system were analyzed using one-way ANOVA followed by Duncan’s mul tiple range test for multiple comparisons. Subjects and Methods Subjects This cross-sectional study included 1,000 adolescents from grades 7 through 9 living in Seoul, Korea. Of 1,000 participants, 800 students were recruited from eight junior high schools. The remaining 200 subjects were recruited from the Korean Youth Counseling Institute (KYCI), where they had been diagnosed and were being treated as Internet addicts. The study was conducted from October 2008 to November 2008. The Institutional Review Board of Chung-Ang University (Seoul, Korea) deemed this study exempt from the requirement for informed consent. Of the 1,000 surveys administered and collected, 147 were excluded due to incomplete responses and difficulty in assessing the level of Internet addiction, thus a total of 853 samples were analyzed in this study. Korean Internet addiction test (KS scale) Internet addiction was evaluated using the Korean version of the Internet addiction self-scale short form (KS scale) for youth, which was developed by the Korea Agency for Digital Opportunity and Promotion [12]. In brief, the KS scale for adolescents is a 20-item self-report questionnaire, consisting of six core components: disturbance of daily routines, self-esteem, withdrawal, virtual interpersonal relationship, deviant behavior, and tolerance. Response to each question is on 4-point Likert scale where 1 corresponds to â€Å"not at all†, 2 corresponds to â€Å"sometimes†, 3 corresponds to â€Å"frequently†, and 4 corresponds to â€Å"always†. The level of Internet addiction was categorized as either high-risk, potential-risk, or no risk based on the total score and the score for the three components of disturbance of daily routines, withdrawal, and tolerance. Subjects were classified as high-risk Internet users if their total score was the same or greater than 52, and/or if the score for disturbance of daily routine, withdrawal, and tolerance was greater than 16, 10, and 12, respectively. Subjects were classified as potential-risk Internet users if their total score was greater than or equal to 48 and less than 52 and/or if their score for disturbance of daily routine, withdrawal, and tolerance was greater than 14, 9, and 11, respectively. Subjects were classified as no risk Internet users if their total score was less than 48. Subject characteristics and lifestyle patterns The following socio-demographic characteristics of subjects were used in this analysis: age at the time of recruitment, family Results General characteristics of subjects The general characteristics of the participants and the relationships between the level of Internet addiction and general characteristics are provided in Table 1. Subjects were between the ages of 13 and 15 years with a mean age of 14. 0 years. More boys were high-risk Internet users than girls (31. 4% vs. 14. 0%), and more girls were no risk Internet users than boys (74. 7% vs. 58. 9%). Younger adolescents were significantly more likely to be highrisk Internet users than older adolescents (P < 0. 001). Household monthly income was significantly related to the level of Internet addiction; adolescents from households with a low monthly income (< 1,000 K won and 1,000 K-1,999 K won) were more likely to be high-risk Internet users (57. 5% and 31. 7%, respectively) Yeonsoo Kim et al. Table 1. Subject characteristics based on level of Internet addiction High risk (n=186) Gender Boys Girls Age (years) 13 14 15 Monthly income (Korean Won)2) < 1,000K 1,000K-1,999K 2,000K-2,999K 3,000K-3,999K ? 4,000K 53 Potential risk (n=90) 37 (9. 7) 53 (11. 3) 15 (7. 0) 46 (14. 5) 29 (9. 0) 3 (7. 5) 15 (12. 5) 25 (15. 8) 14 (7. 7) 28 (10. ) 28 (9. 7) 37 (10. 5) 17 (15. 2) 1 (4. 8) 41 (10. 4) 31 (10. 1) 9 (17. 3) 3 (13. 1) No risk (n=577) 225 (58. 9) 352 (74. 7) 126 (59. 2) 213 (67. 2) 238 (73. 7) 14 (35. 0) 67 (55. 8) 98 (62. 0) 139 (76. 4) 205 (74. 3) 183 (63. 1) 254 (72. 2) 78 (69. 6) 8 (30. 1) 261 (66. 2) 220 (71. 9) 36 (69. 2) 9 (39. 1) Total (n=853) 382 (100. 0) 471 (100. 0) 213 (100. 0) 317 (100. 0) 323 (100. 0) 40 (100. 0) 120 (100. 0) 158 (100. 0) 182 (100. 0) 276 (100. 0) 290 (100. 0) 352 (100. 0) 112 (100. 0) 21 (100. 0) 394 (100. 0) 306 (100. 0) 52 (100. 0) 23 (100. 0) P-value < 0. 001 120 (31. 4)1) 66 (14. 0) 72 (33. 8) 58 (18. 3) 56 (17. ) 23 (57. 5) 38 (31. 7) 35 (22. 2) 29 (15. 9) 43 (15. 6) 79 (27. 2) 61 (17. 3) 17 (15. 2) 12 (57. 1) 92 (22. 4) 55 (18. 0) 7 (13. 5) 11 (47. 8) < 0. 001 < 0. 001 Father’s education High school graduate & under College graduate Graduate school graduate Others Mother’s education High school graduate & under College graduate Graduate school graduate Others 1) < 0. 001 0. 008 N (%) 2) 1,250 Korean won = 1US dollar Table 2. KS-scale scores based on the level of Internet addiction Components Disturbance of daily routine Self-esteem Withdrawal Virtual interpersonal relationship Deviant behavior Tolerance Total 1) 2) Maximum score 24 4 16 12 8 16 80 High risk (n=186) 14. 97  ± 3. 21 1)a2) a a Potential risk (n=90) 13. 90  ± 3. 25 1. 69  ± 0. 84 4. 56  ± 1. 89 3. 93  ± 1. 46 8. 76  ± 2. 64 5. 22  ± 2. 21 b b c No risk (n=577) 9. 32  ± 2. 21 1. 32  ± 0. 61 5. 49  ± 1. 50 3. 78  ± 1. 41 2. 87  ± 1. 07 5. 90  ± 2. 04 c c Total (n=853) 11. 04  ± 3. 59 1. 60  ± 0. 85 6. 88  ± 2. 82 4. 62  ± 2. 58 3. 48  ± 1. 55 7. 23  ± 3. 07 34. 90  ± 11. 48 2. 41  ± 0. 94 7. 23  ± 2. 54 10. 56  ± 2. 59 5. 16  ± 1. 53 b c c c c a a a a b b b b 10. 61  ± 2. 97 50. 95  ± 8. 41 41. 06  ± 5. 29 28. 69  ± 6. 36 Mean  ± S. D Values with different superscript letters within a row are significantly different after Duncan’s multiple range test (P < 0. 05). than adolescents from households with a higher monthly income. Adolescents from households with high monthly incomes (3,000K-3,999K won and ? 4,000K won) were more likely to be no risk Internet users (76. 4% and 74. 3%, respectively). Parents’ educational status also affected the level of Internet addiction. High-risk Internet users had parents whose highest level of education was high school graduation or less (27. 2% in father and 22. 4% in mother, respectively). In contrast, a high proportion of no risk Internet users had parents who were college graduates (72. 2% in father and 71. 9% in mother, respectively). KS-scale score The total KS-scale score and the scores of the six components of the KS-scale are presented in Table 2. High-risk Internet users had significantly higher total KS-scale scores and scores for the six main components than potential-risk Internet users and no risk Internet users (P < 0. 05). Lifestyle patterns Lifestyle patterns, including bedtime, sleep disturbance, alcohol use, and tobacco use according to the level of Internet addiction are shown in Table 3. No risk Internet users had regular bedtime patterns (10. 4% always had a regular bedtime and 41. 8% often had a regular bedtime) while high-risk Internet users complained of irregular bedtime patterns (13. 6% reported often irregular bedtimes and 11. 4% reported always irregular bedtimes). Both high- and potential-risk Internet users suffered from sleep disturbances (81. 1% and 76. 7%, respectively). Similarly, 66% of 54 The effect of Internet addiction on dietary behavior Table 5. Snacking patterns based on the level of Internet addiction P-value Skipping breakfast 20 (10. 9)1) 15 (16. ) 49 (26. 6) 60 (10. 4) 95 (11. 2) < 0. 001 Yes No Skipping Lunch Yes No Skipping Dinner Yes No Oversleep No appetite Indigestion Snacking before a meal Weight loss Saving money Lack of time Habit Others ? 3 times/day Table 3. Lifestyle patterns based on the level of Internet addiction High risk (n=186) Bedtime Always regular Often regular 25 (27. 8) 241 (41. 8) 315 (37. 0) 30 (33. 3) 229 (39. 7) 328 (38. 5) 14 (15. 6) 6 (6. 7) 32 (5. 5) 15 (2. 6) 71 (8. 3) 42 (4. 9) Potential risk (n=90) No risk (n=577) Total (n=853) High risk (n=186) Potential risk (n=90) No risk (n=577) Total (n=853) P-value 0. 683 88 (47. 3) 1) 43 (48. 3) 228 (40. 1) 359 (42. 6) 46 (51. 7) 340 (59. 9) 484 (57. 4) 0. 177 6 (6. 8) 34 (6. 0) 56 (6. 7) 0. 049 98 (52. 7) 16 (8. 6) Neither regular or 69 (37. 5) irregular Often irregular Always irregular Sleep disturbance Yes No Alcohol use Yes No Tobacco use Yes No 1) 25 (13. 6) 21 (11. 4) 170 (91. 4) 82 (93. 2) 531 (94. 0) 783 (93. 3) 38 (20. 4) 15 (17. 1) 80 (14. 1) 133 (17. 0) 150 (81. 1) 69 (76. 7) 278 (48. 3) 497 (58. 4) < 0. 001 35 (18. 9) 21 (23. 3) 298 (51. 7) 354 (41. 6) 148 (79. 6) 73 (82. 9) 486 (85. 9) 707 (82. 8) 49 (28. 3) 34 (19. 7) 6 (3. ) 8 (4. 6) 10 (5. 6) 2 (2. 9) 25 (14. 5) 18 (10. 4) 18 (10. 4) 29 (15. 8) 51 (27. 7) 86 (55. 5) 4 (2. 6) 21 (13. 5) 22 (26. 2) 112 (21. 3) 183 (23. 4) 20 (23. 8) 122 (23. 2) 176 (22. 5) 6 (7. 1) 5 (6. 0) 8 (9. 5) 0 (0. 0) 6 (7. 1) 7 (8. 3) 13 (14. 4) 29 (5. 5) 21 (4. 0) 38 (7. 2) 2 (0. 4) 40 (7. 6) 44 (8. 4) 55 (9. 7) 41 (5. 2) 34 (4. 3) 56 (7. 2) 7 (0. 9) 64 (8. 2) 69 (8. 8) 97 (11. 5) 0. 004 0. 026 R easons for meal skipping 123 (66. 5) 58 (64. 4) 252 (43. 7) 433 (50. 8) < 0. 001 62 (33. 5) 97 (52. 4) 88 (47. 6) 32 (35. 6) 325 (56. 3) 419 (49. 2) 28 (31. 1) 90 (15. 6) 215 (25. 2) < 0. 01 62 (68. 9) 897 (84. 4) 637 (74. 8) N (%) Table 4. Recent changes in dietary habits based on the level of Internet addiction High risk (n=186) Changes in meal size Increased Decreased No change Changes in appetite Worse Bad No change Better Do not know Fast Average Slow Irregular 1) 10 (11. 9) 118 (22. 4) 153 (19. 5) Potential risk (n=90) No risk (n=577) Total (n=853) P-value Frequency of snacking 1-2/day 104 (56. 5) 65 (72. 2) 396 (69. 8) 565 (67. 2) 12 (13. 3) 116 (20. 5) 179 (21. 3) 50 (60. 2) 239 (47. 2) 375 (50. 4) 4 (4. 8) 8 (9. 6) 38 (7. 5) 46 (6. 2) 73 (14. 4) 102 (13. 7) 0. 245 4 (29. 0)1) 29 (32. 2) 164 (28. 6) 247 (29. 1) 62 (33. 3) 70 (37. 6) 25 (13. 4) 30 (16. 1) 72 (38. 7) 17 (9. 1) 42 (22. 6) 64 (34. 4) 71 (38. 2) 32 (17. 2) 19 (10. 2) 20 (22. 2) 127 (22. 2) 209 (24. 6) 41 (45. 6) 282 (49. 2) 393 (46. 3) 7 (7. 8) 11 (12. 2) 8 (8. 9) 21 (3. 7) 53 (6. 2) 0. 019 None Snack items Confectionery Soda 0. 001 80 (13. 9) 121 (14. 2) 78 (13. 6) 103 (12. 1) 43 (47. 8) 254 (44. 2) 369 (43. 4) 21 (23. 3) 142 (24. 7) 205 (24. 1) 37 (41. 1) 173 (30. 0) 274 (32. 2) 33 (36. 7) 271 (47. 0) 375 (44. 0) 11 (12. 2) 109 (18. 9) 152 (17. 8) 9 (10. 0) 23 (4. 0) 51 (6. 0) 0. 002 Ttokbokki, rameon, fried foods Fast foods Fruits Milk Others Hunger Lack of time for a meal Habit Boredom Social event Others 1) 12 (7. 7) 14 (9. 0) 15 (9. 7) 3 (1. 9) 86 (46. 7) 10 (5. 4) 28 (15. 2) 33 (17. 9) 17 (9. 2) 10 (5. 4) 3 (3. 6) 9 (10. 8) 8 (9. 6) 1 (1. 2) 26 (5. 1) 61 (12. 1) 55 (10. 9) 14 (2. 8) 41 (5. 5) 84 (11. 3) 78 (10. 5) 18 (2. 4) 0. 057 Changes in eating speed Reasons for snacking 46 (51. 1) 319 (55. 6) 451 (53. 2) 1 (1. 1) 22 (24. 4) 14 (15. 6) 5 (5. 6) 2 (2. 2) 30 (5. 2) 41 (4. 8) N (%) 79 (13. 8) 129 (15. 2) 98 (17. 1) 145 (17. 1) 34 (5. 9) 14 (2. 4) 56 (6. 6) 26 (3. 1) igh-risk Internet users and 64% of potential-risk Internet users had used alcohol. Fifty-two percent of high-risk Internet users had used tobacco while only 15. 6% of no risk Internet users had used tobacco. Dietary behavior and diet quality Recent changes in eating habits among adolescents are provided in Table 4. More of high-risk Internet users answered that their dietary habits had been chan ged to have small meal sizes, a poor appetite, and irregular eating speeds than no risk Internet users (P=0. 019, 0. 001, and 0. 002, respectively). High-risk Internet N (%) users had a high prevalence of skipping dinner (Table 5). High-risk Internet users snacked frequently, often snacking more than three times per day (15. 8% vs. 9. 7 % for no risk Internet users). Favorite snacks and reasons for snacking were not significantly different among adolescents based on levels of Internet addiction. Diet quality based on levels of Internet addiction is shown Yeonsoo Kim et al. Table 6. Diet quality based on the level of Internet addiction High risk (n=186) Potential risk (n=90) No risk (n=577) 3. 40  ± 1. 52b Total (n=853) 3. 25  ± 1. 58 1) 55 I eat more than one 2. 72  ± 1. 722)a3) 3. 36  ± 1. 36b serving of milk or dairy products every day. I eat several servings of meat, fish, egg, bean, or tofu every day. I eat vegetables and Kimchi every meal. I eat one serving of fruit or fruit juice every day. I eat three meals a day on a regular basis. I eat a variety of foods every day. I eat fried or stir-fried foods most of the time. I eat fatty meat most of the time. I add table salt or soy sauce to foods most of the time. I eat ice cream, cake, and/or drink soda between meals. Total 1) 2. 86  ± 1. 50a 3. 04  ± 1. 48a 3. 35  ± 1. 41b 3. 21  ± 1. 44 2. 83  ± 1. 63a 2. 91  ± 1. 69a 3. 11  ± 1. 48ab 3. 43  ± 1. 45b 3. 38  ± 1. 49b 3. 45  ± 1. 55b 3. 26  ± 1. 51 3. 32  ± 1. 9 2. 58  ± 1. 56a 2. 98  ± 1. 63b 3. 32  ± 1. 59c 3. 12  ± 1. 62 2. 86  ± 1. 60a 2. 85  ± 1. 57a 2. 98  ± 1. 48a 2. 78  ± 1. 42a 3. 38  ± 1. 45b 3. 35  ± 1. 45b 3. 16  ± 1. 42 3. 18  ± 1. 49 2. 72  ± 1. 50a 3. 26  ± 1. 67a 2. 73  ± 1. 50a 3. 07  ± 1. 59a 3. 28  ± 1. 56b 3. 53  ± 1. 52b 3. 10  ± 1. 58 3. 42  ± 1. 57 2. 80  ± 1. 72a 2. 80  ± 1. 50a 3. 29  ± 1. 54b 3. 13  ± 1. 59 28. 38  ± 6. 34a 30. 22  ± 6. 79b 33. 75  ± 6. 01c 32. 20  ± 6. 57 Diet quality was assessed by using 10-item mini-dietary assessment index developed by Kim [14]. Mean  ± SD 3) Values with different superscript letters within a row are significantly different (P < 0. 5) after Duncan’s multiple range test. 2) in Table 6. The diet quality of high-risk Internet users was significantly lower than that of potential-risk Internet users and no risk Internet users, respectively (P < 0. 05). Discussion In this study, we demonstrated that high-risk Internet users eat smaller meals, have less of an appetite, skip meals, and snack more than their potential-risk and normal-risk Internet user counterparts. Moreover, the diet quality of high-risk Internet users is poorer than that of potential-risk Internet users and no risk Internet users. The frequency of skipping dinner in high-risk Internet users was significantly higher than that in no risk Internet users. This finding is consistent with a study by Kim and Chun that reported a high incidence of meal skipping in Internet addicts [7]. The high frequency of skipping dinner could be related to snacking; more frequent snacking was observed in high-risk Internet users than no risk Internet users. Savige et al. also reported that adolescent heavy snackers skipped dinner more frequently than their non- or light-snacker adolescent counterparts [15]. Moreover, the favorite snacks of our participants were confectionery and fast food, which are nutritionally poor foods with high calories provided by fats and simple sugars but with few other nutrients such as vitamins and minerals. Thus high-risk Internet users have improper dietary behaviors that could impact their growth and development. The quality of the diet of high-risk Internet users as measured using a mini-dietary assessment index was poor. The mini-dietary assessment index that we used is a Korean version of the Healthy Eating Index in which scores over 30 indicate a good quality diet. In high-risk Internet users, the average total score was 28. 38, which indicates an â€Å"inappropriate† diet quality. High-risk Internet users had the lowest meal regularity score, reflected by a higher rate of skipping dinner in high-risk Internet users than no risk Internet users. Moreover, high-risk Internet users did not consume enough milk and dairy products, meat and fish, and fruits and vegetables compared with no risk Internet users. Proper intake of milk and dairy products as major sources of calcium during childhood is crucial for achieving optimal peak bone mass and maintaining and repairing bone tissue [16]. In addition, low consumption of fruits and vegetables in high-risk Internet users suggests low intake of vitamins, minerals, and fiber in these individuals. Vitamins and minerals play a crucial role in energy production, maintenance of bone health, adequate immune function, and protection against oxidative stress [17,18]. Several studies have shown that proper fruit and vegetable intake can prevent health problems such as obesity and cardiovascular diseases [19-21]. High-risk Internet users not only consumed too little of the recommended food groups; they consumed more than the recommended daily quantities of fatty foods, fried foods, salt, and foods high in simple sugars. High fat and simple sugar intake increase the chance of being overweight or obese. Obese children and adolescents can have various adverse health outcomes, including diabetes, hypertension, dyslipidemia, and metabolic syndrome [22-24]. Furthermore, obese children have a higher risk of cardiovascular mortality when they reach adulthood [22,23]. The diet of high-risk Internet users, though it may meet their energy requirements, is lacking in nutritional value, and may therefore not support the growth spurt during adolescence and may cause nutrition-related health problems. High-risk Internet users drank and smoked more and had a poorer quality diet and higher frequency of meal skipping than no risk Internet users. Results from two cross-sectional studies on Korean high school students [8] and Taiwanese high school students [2] found a strong association between Internet addiction and high use of alcohol and tobacco. Alcohol and tobacco companies use the Internet to promote and advertise their products by using themes and icons of youth popular culture, games and contests, and commercially-sponsored websites and homepages [25]. Therefore, because high-risk Internet users are more likely to be exposed to tobacco and alcohol advertisements, 56 The effect of Internet addiction on dietary behavior 4. Seo M, Kang HS, Yom YH. Internet addiction and interpersonal problems in Korean adolescents. Comput Inform Nurs 2009;27: 226-33. 5. Siomos KE, Dafouli ED, Braimiotis DA, Mouzas OD, Angelopoulos NV. Internet addiction among Greek adolescent students. Cyberpsychol Behav 2008;11:653-7. 6. Ha JH, Kim SY, Bae SC, Bae S, Kim H, Sim M, Lyoo IK, Cho SC. Depression and Internet addiction in adolescents. Psychopa thology 2007;40:424-30. 7. Kim JS, Chun BC. Association of Internet addiction with health promotion lifestyle profile and perceived health status in adolescents. J Prev Med Public Health 2005;38:53-60. 8. Choi K, Son H, Park M, Han J, Kim K, Lee B, Gwak H. Internet overuse and excessive daytime sleepiness in adolescents. Psychiatry Clin Neuosci 2009;63:455-62. 9. Gunnell DJ, Smith GD, Frankel SJ, Kemp M, Peters TJ. Socioeconomic and dietary influences on leg length and trunk length in childhood: a reanalysis of the Carnegie survey of diet and health in prewar Britain (1937-1939). Paediatr Perinat Epidemiol 1998;12:96-113. 10. Sachar RK, Singh H, Soni RK, Singh WP, Bhatia RC, Raizada N, Singh B. A cross-sectional study of growth parameters of rural adolescent girls of Punjab. Indian J Matern Child Health 1997;8:21-5. 11. Vadiveloo M, Zhu L, Quatromoni PA. Diet and physical activity patterns of school-aged children. J Am Diet Assoc 2009;109: 145-51. 12. Kim DI, Chung YJ, Lee EA, Kim DM, Cho YM. Development of Internet addiction proneness scale-short form (KS scale). The Korean Jounal of Counseling 2008;9:1703-22. 13. The Korean Nutrition Society. Dietary reference intakes for Koreans. Seoul: KokJin Co. ;2005. 14. Kim WY, Cho MS, Lee HS. Development and validation of mini dietary assessment index for Koreans. The Korean Journal of Nutrition 2003;36:83-92. 15. Savige G, Macfarlane A, Ball K, Worsley A, Crawford D. Snacking behaviors of adolescents and their association with skipping meals. Int J Behav Nutr Phys Act 2007;4:36. 16. Petrie HJ, Stover EA, Horswill CA. Nutritional concerns for the child and adolescent competitior. Nutrition 2004;20:620-31. 17. Wardlaw GM, Hampl JS. Perspectives in Nutrition. New York: McGraw-Hill International Co. ; 2007. p. 295-463. 18. Omenn GS. Micronutrients (vitamins and minerals) as cancerpreventive agents. IARC Sci Publ 1996;139:33-45. 19. Davis EM, Cullen KW, Watson KB, Konarik M, Radcliffe J. A fresh fruit and vegetable program improves high school students’ consumption of fresh produce. J Am Diet Assoc 2009;109:1227-31. 20. Lorson BA, Melgar-Quinonez HR, Taylor CA. Correlates of fruit and vegetable intakes in US children. J Am Diet Assoc 2009; 109:474-8. 21. Miriran P, Noori N, Zavareh MB, Azizi F. Fruit and vegetable consumption and risk factors for cardiovascular disease. Metabolism 2009;58:460-8. 22. Berenson GS, Srinivasan SR, Bao W, Newman WP, Tracy RE, Wattigney WA. Association between multiple cardiovascular risk factors and atherosclerosis in children and young adults. The Bogalusa Heart Study. N Engl J Med 1998;338:1650-6. 23. Freedman DS, Dietz WH, Srinivasan SR, Berenson GS. The relation of overweight to cardiovascular risk factors among children and adolescents: the Bogalusa Heart Study. Pediatrics they are more likely to drink and smoke than other Internet users. Furthermore, high frequency of use of tobacco and alcohol can exacerbate diet-related problems, because smoking and drinking are negatively associated with diet quality and dietary behaviors such as meal regularity [26,27]. High-risk Internet users reported more irregular sleep patterns and more episodes of sleep disturbance than no risk Internet users. This is consistent with a previous study of Korean adolescents that showed that Internet addiction was associated with insomnia, apnea, and nightmare [8]. In addition, sleep disturbance could increase the risk of mental health problems as well as substance abuse [6,28,29,30]. Hence, high-risk Internet users are more likely to experience physical and mental health problems. This study has some limitations. First, this study was a cross-sectional study, therefore we could not confirm causal associations between Internet addiction and dietary behavior. Second, the questionnaire was self-reported. It is therefore possible that some of the adolescents may not have admitted to using alcohol and tobacco due to social restrictions, even though this study was anonymous. High-risk Korean adolescent Internet users had improper dietary behavior and a poorer diet quality than their no risk Internet counterparts. To ensure that the growth and development of high-risk Internet users is not adversely impacted, their diets should be supplemented with the nutrients that they are lacking. Interventions to improve both dietary behavior and treat Internet addiction may have synergistic health benefits. In conclusion, the results of this study suggest that children should be educated as to what a balanced diet and optimum physical activity routine is to remain healthy and grow. Furthermore, the government should take an active role in designing and evaluating Internet addiction-related health intervention strategies. 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