Lord of the Flies- What Is Evil and Where Does It Come from? Essay

Prompt: What is evil and where does it come from? Support your answer with Lord of the Flies and your own example. Two direct quotes needed: one for each body paragraph about Lord of the Flies. Where does evil come from? Was Lord of the Flies written to answer this question? William Golding wrote this spectacular story in 1954 to illustrate the concept of evil’s existence. The story is about several boys whose plane crashed because of a Soviet missile hit. The boys get stranded on an island and have to figure out how to survive. Each boy has his own personality and ideas on how to survive and get rescued. The group of boys start a fire to act as a signal for rescue. Unfortunately, the fire gets out of hand, and the chaos begins. Because the group of boys was hungry, one of the boys, Jack, decided to kill a pig. This led Jack to abandon his superego and to continue killing. It seems like the Beast entered Jack and the others, causing in them the thirst for blood. After several events that took place in the story, the boys were finally rescued by a naval officer from the Soviet Union. William Golding wrote this classic to deliver a moral message about the origins of evil. Evil is killing people for excitement and comes from ids within us, according to Lord of the Flies. William Golding shows that evil is within everyone and does not come from society. When Lord of the Flies/ the Beast gets into Simon’s head, Lord of the Flies says, â€Å" I am part of you† (Golding 142-143). Evil is speaking directly to Simon’s head and heart. This is an example of Simon’s conscience talking to him and evil trying to turn Simon into a savage like Jack. Society did not make Simon evil, it was the Beast who tried to get Simon to listen and become a savage. Evil is within everyone yet it is though society, creatures and people that evil is actually seen. â€Å"The Beast is harmless and horrible† (Golding 147). The Beast is horrible because it is not content with himself. Ralph is frightened because he thinks Simon’s murder was done on purpose (Golding 157). However, the Beast was not the one who committed Simon’s murder. It was Jack, Ralph, and the other boys on the island who murdered Simon. The Beast is not the one to blame, for Ralph had a choice whether to be a part of Simon’s death. Therefore, the Beast is blameless. Society does not generate evil in people and creatures. Evil is within us. The Bible clearly states in Genesis 3:3 that sin comes from within. In the book of Genesis, it had the story of Adam and Eve. God clearly said, â€Å"You must not eat from the Tree of Knowledge or you (Adam and Eve) will die† (Genesis 3:3). Adam had a choice whether to eat the forbidden fruit on the Tree of Knowledge. He chose to eat it. The serpent known as Satan deceived Adam and Eve and managed to trick them into eating the forbidden fruit. Adam was in control of his own actions. If he had not eaten that fruit, he would not have let sin into this world. Therefore, sin comes from within us. Evil is the feeling of enjoyment when killing someone or something and comes from our ids within us. The author clearly demonstrates in Lord of the Flies that evil is within everyone and does not come from society. Even though it can seem like society causes people and creatures to be evil, the fact is that evil comes from within every human being. It is clearly explained throughout the Bible the acts of sin are evil. Evil is within all of us whether we are morally corrupted by sin or we are tempted by society. Lord of the Flies definitely illustrated the concept of evil’s existence and that evil is within all of us.

Healthy Eating Essay

Healthy eating tip 1: Set yourself up for success To set yourself up for success, think about planning a healthy diet as a number of small, manageable steps rather than one big drastic change. If you approach the changes gradually and with commitment, you will have a healthy diet sooner than you think. Simplify. Instead of being overly concerned with counting calories or measuring portion sizes, think of your diet in terms of color, variety, and freshness. This way it should be easier to make healthy choices. Focus on finding foods you love and easy recipes that incorporate a few fresh ingredients. Gradually, your diet will become healthier and more delicious. Start slow and make changes to your eating habits over time. Trying to make your diet healthy overnight isn’t realistic or smart. Changing everything at once usually leads to cheating or giving up on your new eating plan. Make small steps, like adding a salad (full of different color vegetables) to  your diet once a day or switching from butter to olive oil when cooking. As your small changes become habit, you can continue to add more healthy choices to your diet. Every change you make to improve your diet matters. You don’t have to be perfect and you don’t have to completely eliminate foods you enjoy to have a healthy diet. The long term goal is to feel good, have more energy, and reduce the risk of cancer and disease. Don’t let your missteps derail you—every healthy food choice you make counts. Think of water and exercise as food groups in your diet. Water. Water helps flush our systems of waste products and toxins, yet many people go through life dehydrated—causing tiredness, low energy, and headaches. It’s common to mistake thirst for hunger, so staying well hydrated will also help you make healthier food choices. Exercise. Find something active that you like to do and add it to your day, just like you would add healthy greens, blueberries, or salmon. The benefits of lifelong exercise are abundant and regular exercise may even motivate you to make healthy food choices a habit. Healthy eating tip 2: Moderation is key People often think of healthy eating as an all or nothing proposition, but a key foundation for any healthy diet is moderation. But what is moderation? How much is a moderate amount? That really depends on you and your overall eating habits. The goal of healthy eating is to develop a diet that you can maintain for life, not just a few weeks or months, or until you’ve hit your ideal weight. So try to think of moderation in terms of balance. Despite what certain fad diets would have you believe, we all need a balance of carbohydrates, protein, fat, fiber, vitamins, and minerals to sustain a healthy body. For most of us, moderation or balance means eating less than we do now. More specifically, it means eating far less of the unhealthy stuff (unrefined sugar, saturated fat, for example) and more of the healthy (such as fresh fruit and vegetables). But it doesn’t mean eliminating the foods you love. Eating bacon for breakfast once a week, for example, could be considered moderation if you follow it with a healthy lunch and dinner–but not if you follow it with a box of donuts and a sausage pizza. If you eat 100 calories  of chocolate one afternoon, balance it out by deducting 100 calories from your evening meal. If you’re still hungry, fill up with an extra serving of fresh vegetables. Try not to think of certain foods as â€Å"off-limits.† When you ban certain foods or food groups, it is natural to want those foods more, and then feel like a failure if you give in to temptation. If you are drawn towards sweet, salty, or unhealthy foods, start by reducing portion sizes and not eating them as often. Later you may find yourself craving them less or thinking of them as only occasional indulgences. Think smaller portions. Serving sizes have ballooned recently, particularly in restaurants. When dining out, choose a starter instead of an entree, split a dish with a friend, and don’t order supersized anything. At home, use smaller plates, think about serving sizes in realistic terms, and start small. If you don’t feel satisfied at the end of a meal, try adding more leafy green vegetables or rounding off the meal with fresh fruit. Visual cues can help with portion sizes–your serving of meat, fish, or chicken should be the size of a deck of cards, a slice of bread should be the size of a CD case, and half a cup of mashed potato, rice, or pasta is about the size of a traditional light bulb. Healthy eating tip 3: It’s not just what you eat, it’s how you eat Healthy eating is about more than the food on your plate—it is also about how you think about food. Healthy eating habits can be learned and it is important to slow down and think about food as nourishment rather than just something to gulp down in between meetings or on the way to pick up the kids. Eat with others whenever possible. Eating with other people has numerous social and emotional benefits—particularly for children—and allows you to model healthy eating habits. Eating in front of the TV or computer often leads to mindless overeating. Take time to chew your food and enjoy mealtimes. Chew your food slowly, savoring every bite. We tend to rush though our meals, forgetting to actually taste the flavors and feel the textures of our food. Reconnect with the joy of eating. Listen to your body. Ask yourself if you are really hungry, or have a glass of water to see if you are thirsty instead of hungry. During a meal, stop eating before you  feel full. It actually takes a few minutes for your brain to tell your body that it has had enough food, so eat slowly. Eat breakfast, and eat smaller meals throughout the day. A healthy breakfast can jumpstart your metabolism, and eating small, healthy meals throughout the day (rather than the standard three large meals) keeps your energy up and your metabolism going. Avoid eating at night. Try to eat dinner earlier in the day and then fast for 14-16 hours until breakfast the next morning. Early studies suggest that this simple dietary adjustment—eating only when you’re most active and giving your digestive system a long break each day—may help to regulate weight. After-dinner snacks tend to be high in fat and calories so are best avoided, anyway. Healthy eating tip 4: Fill up on colorful fruits and vegetables Fruits and vegetables are the foundation of a healthy diet. They are low in calories and nutrient dense, which means they are packed with vitamins, minerals, antioxidants, and fiber. Try to eat a rainbow of fruits and vegetables every day and with every meal—the brighter the better. Colorful, deeply colored fruits and vegetables contain higher concentrations of vitamins, minerals, and antioxidants—and different colors provide different benefits, so eat a variety. Aim for a minimum of five portions each day. Some great choices include: Greens. Branch out beyond bright and dark green lettuce. Kale, mustard greens, broccoli, and Chinese cabbage are just a few of the options—all packed with calcium, magnesium, iron, potassium, zinc, and vitamins A, C, E, and K. Sweet vegetables. Naturally sweet vegetables—such as corn, carrots, beets, sweet potatoes, yams, onions, and squash—add healthy sweetness to your meals and reduce your cravings for other sweets. Fruit. Fruit is a tasty, satisfying way to fill up on fiber, vitamins, and antioxidants. Berries are cancer-fighting, apples provide fiber, oranges and mangos offer vitamin C, and so on. The importance of getting vitamins from food—not pills The antioxidants and other nutrients in fruits and vegetables help protect against certain types of cancer and other diseases. And while advertisements  abound for supplements promising to deliver the nutritional benefits of fruits and vegetables in pill or powder form, research suggests that it’s just not the same. A daily regimen of nutritional supplements is not going to have the same impact of eating right. That’s because the benefits of fruits and vegetables don’t come from a single vitamin or an isolated antioxidant. The health benefits of fruits and vegetables come from numerous vitamins, minerals, and phytochemicals working together synergistically. They can’t be broken down into the sum of their parts or replicated in pill form. Healthy eating tip 5: Eat more healthy carbs and whole grains Choose healthy carbohydrates and fiber sources, especially whole grains, for long lasting energy. In addition to being delicious and satisfying, whole grains are rich in phytochemicals and antioxidants, which help to protect against coronary heart disease, certain cancers, and diabetes. Studies have shown people who eat more whole grains tend to have a healthier heart. A quick definition of healthy carbs and unhealthy carbs Healthy carbs (sometimes known as good carbs) include whole grains, beans, fruits, and vegetables. Healthy carbs are digested slowly, helping you feel full longer and keeping blood sugar and insulin levels stable. Unhealthy carbs (or bad carbs) are foods such as white flour, refined sugar, and white rice that have been stripped of all bran, fiber, and nutrients. Unhealthy carbs digest quickly and cause spikes in blood sugar levels and energy. Tips for eating more healthy carbs Include a variety of whole grains in your healthy diet, including whole wheat, brown rice, millet, quinoa, and barley. Experiment with different grains to find your favorites. Make sure you’re really getting whole grains. Be aware that the words stone-ground, multi-grain, 100% wheat, or bran can  be deceptive. Look for the words â€Å"whole grain† or â€Å"100% whole wheat† at the beginning of the ingredient list. In the U.S., Canada, and some other countries, check for the Whole Grain Stamps that distinguish between partial whole grain and 100% whole grain. Try mixing grains as a first step to switching to whole grains. If whole grains like brown rice and whole wheat pasta don’t sound good at first, start by mixing what you normally use with the whole grains. You can gradually increase the whole grain to 100%. Avoid: Refined foods such as breads, pastas, and breakfast cereals that are not whole grain. Healthy eating tip 6: Enjoy healthy fats & avoid unhealthy fats Good sources of healthy fat are needed to nourish your brain, heart, and cells, as well as your hair, skin, and nails. Foods rich in certain omega-3 fats called EPA and DHA are particularly important and can reduce cardiovascular disease, improve your mood, and help prevent dementia. Add to your healthy diet: Monounsaturated fats, from plant oils like canola oil, peanut oil, and olive oil, as well as avocados, nuts (like almonds, hazelnuts, and pecans), and seeds (such as pumpkin, sesame). Polyunsaturated fats, including Omega-3 and Omega-6 fatty acids, found in fatty fish such as salmon, herring, mackerel, anchovies, sardines, and some cold water fish oil supplements. Other sources of polyunsaturated fats are unheated sunflower, corn, soybean, flaxseed oils, and walnuts. Reduce or eliminate from your diet: Saturated fats, found primarily in animal sources including red meat and whole milk dairy products. Trans fats, found in vegetable shortenings, some margarines, crackers, candies, cookies, snack foods, fried foods, baked goods, and other processed foods made with partially hydrogenated vegetable oils. Healthy eating tip 7: Put protein in perspective Protein gives us the energy to get up and go—and keep going. Protein in food is broken down into the 20 amino acids that are the body’s basic building blocks for growth and energy, and essential for maintaining cells, tissues, and organs. A lack of protein in our diet can slow growth, reduce muscle  mass, lower immunity, and weaken the heart and respiratory system. Protein is particularly important for children, whose bodies are growing and changing daily. Here are some guidelines for including protein in your healthy diet: Try different types of protein. Whether or not you are a vegetarian, trying different protein sources—such as beans, nuts, seeds, peas, tofu, and soy products—will open up new options for healthy mealtimes. Beans: Black beans, navy beans, garbanzos, and lentils are good options. Nuts: Almonds, walnuts, pistachios, and pecans are great choices. Soy products: Try tofu, soy milk, tempeh, and veggie burgers for a change. Avoid salted or sugary nuts and refried beans. Downsize your portions of protein. Many people in the West eat too much protein. Try to move away from protein being the center of your meal. Focus on equal servings of protein, whole grains, and vegetables. Focus on quality sources of protein, like fresh fish, chicken or turkey, tofu, eggs, beans, or nuts. When you are having meat, chicken, or turkey, buy meat that is free of hormones and antibiotics. Healthy eating tip 8: Add calcium for strong bones Calcium is one of the key nutrients that your body needs in order to stay strong and healthy. It is an essential building block for lifelong bone health in both men and women, as well as many other important functions. You and your bones will benefit from eating plenty of calcium-rich foods, limiting foods that deplete your body’s calcium stores, and getting your daily dose of magnesium and vitamins D and K—nutrients that help calcium do its job. Recommended calcium levels are 1000 mg per day, 1200 mg if you are over 50 years old. Take a vitamin D and calcium supplement if you don’t get enough of these nutrients from your diet. Good sources of calcium include: Dairy: Dairy products are rich in calcium in a form that is easily digested and absorbed by the body. Sources include milk, yogurt, and cheese. Vegetables and greens: Many vegetables, especially leafy green ones, are rich sources of calcium. Try turnip greens, mustard greens, collard greens, kale, romaine lettuce, celery, broccoli, fennel, cabbage, summer squash, green beans, Brussels sprouts, asparagus, and crimini mushrooms. Beans: For another rich source of calcium, try black beans, pinto beans, kidney beans, white beans, black-eyed peas, or baked beans. Healthy eating tip 9: Limit sugar and salt If you succeed in planning your diet around fiber-rich fruits, vegetables, whole grains, lean protein, and good fats, you may find yourself naturally cutting back on foods that can get in the way of your healthy diet—sugar and salt. Sugar Sugar causes energy ups and downs and can add to health and weight problems. Unfortunately, reducing the amount of candy, cakes, and desserts we eat is only part of the solution. Often you may not even be aware of the amount of sugar you’re consuming each day. Large amounts of added sugar can be hidden in foods such as bread, canned soups and vegetables, pasta sauce, margarine, instant mashed potatoes, frozen dinners, fast food, soy sauce, and ketchup. Here are some tips: Avoid sugary drinks. One 12-oz soda has about 10 teaspoons of sugar in it, more than the daily recommended limit! Try sparkling water with lemon or a splash of fruit juice. Eat naturally sweet food such as fruit, peppers, or natural peanut butter to satisfy your sweet tooth.

Applications of Visa in Australia Market

Explain Applications of the 457 Visa in Australia Market? Australian government is planning to amend the current regulations in the subclass 457 Visa to give more priority to the national workforce. This analysis includes the background of the 457 Visa for the sponsoring of people of oversea to meet the scarcity of labor in the Australian market. At the same time, it includes the major changes or amendments that are going to impose by the Australian immigration government. Impacts of the changes over the 457 Visa have also discussed.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Visa is essential for migration from one country to another country. Basically, visa is an identity for the foreign or overseas people to easily control the system of a country. Countries allow the people to visit the entire state with the validation of the visa’s time period. Australian government is follows strict regulation regarding the movement of the people from other geographical planet. Australia is very well developed country so people are excited to visit once Australia for permanent or short term stay (Berg, 2015). In context of the study most of the students are oversea students come to the Australia. Along with this, there are various category of visa according to the requirement like travel, education purpose and for work purpose. Regarding these different rules and regulation are complied or imposed to follow. Visitors in Australia are continuously increasing and the people for permanent migration for Australia are also increasing.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   457 Visa is an important type of visa for the immigration programme in Australia. Basically, it is the visa through which employer can go for long term and short term of time period in Australia (Breen, 2016). It is stated that Australia is the mostly private business owned country where large number of skilled employers are required. Further, at the peak time of work in Australia there is a shortage of skilled worker to carry out the manufacturing or other activities of the perspective business than 457 Visa holders are allowed to move in the country for work for long time as mentioned in the last for four years. Further, it is subclass 457 Visa which was employed before 20 years. It is one of the most sponsor programmes which explore the opportunities in the Australia country to get familiar with the values, norms and work culture of the Australian labor market (Wright et. al, 2016).   Australian labor market is the mix of high skilled and low skilled and most of the Australian business opportunities are bifurcated for the skilled and experienced workers to carry out the process. In addition to this, employers want to meet out the requirement of the skilled workers so that they hire the labor from the foreign or overseas market to hold the vast majority of 457 Visa holders (Mares, 2016). At the same time, most number of the 457 Visa holders is entitled to work for high skilled reference in the Australian economy. Economic immigration is mostly benefit for the Australian economic development and supply of the high skilled people from various business lines 457 Visa is required for the employer sponsor.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   On the other hand, it is not applicable for the students are traveler. In addition to this, students those are living in Australia currently can grab the opportunity to work as skilled people. It is also reviewed that immigrant migration rate is increasing rapidly from 1990’s as there bubbled the growth in labor and high skilled work programme (Smith et. al, 2016). Australian government can use the domestic mechanism to encourage and motivate the people at specified wages rates. Along with this, the Turnbull government has not conducted any training programme for the skills enhancement of the migrants or domestic labor. As per the labor market law, if the occupation is listed on the Medium and Long term Strategic Skilled List than employee can work for four year if it is not registered than it allows only two years working in the Australia (Bales et. al, 2017).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   457 Visa is beneficial for the short time works those are willing to work at least 12 months in the Australia than industry, company and institutions can offer the visa to work in. At the same time, it is also important for the visitors to take the advantages of the visa. Basically, 457 Visa was launched in year 1996 to meet out the shortage of the skilled labor in the Australian market (Breen, 2016). Along with this, visa holders can earn good amount of money in this short term of time period as it would not be paid by other industry.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   On the other hand, 457 Visa has some of consequences that may derail the benefits of the visa in country (Oliver and Wright, 2016). In addition to this, 457 Visa holders are only skilled works their only not more than that. Further, the employees on visa are not permitted the various facilities and benefits from the Australian government as it cannot use the health care service for free and not a member for vote cast. Moreover, they are also bound to pay the tax under the government provisions. It is also reviewed that they are unable to change the job in other stream as they were hired.   Ã‚   457 Visa is introduced as the 20 years before in the year 1996 to bring the high skilled and low skilled workers in the Australian industry market where the employers are facing the challenges in finding the suitable workers for their organization (Sherrell, Wright and Howe, 2017). Therefore, the need for subclass Visa is offered by the employers to get the workers from foreign or overseas market. Basically, this visa is permitted by the Australian government to the verified applicants from the foreign market. It is conceived that the 457 visa holders can misuse the visa by transferring the authority to use for the same. Australian government has changes the policies regarding the 457 visa for its reliable implications. In concern to this, time duration to stay in Australian after complication has been changed (Border, 2014). Immigration minister Peter Dutton has announced that the sponsor employee can live in the country when his proposed occupation completed only for 60 days. In ad dition to this, the previous time period was 90 days and it has reduced by 30 days for the 457 visa holders. It is contempt that if an employee from overseas stay in the county on the supplement of the Australian people so it impacts the opportunity for the domestic workers which indirectly influence the economic consideration for long time and creates huge challenges for the Australian labor market (Border, 2017). Along with this, government has made the changes in the immigration policy and it would be difficult for the workers to extend the time duration for being in the Australia. Along with this, two different streams would be offered to the 457 visa holders those are going on the sponsorship, one is short -term would be for two years and long –term would be for four years as it was four years only before amendments (NEWS, 2017). Moreover, the government has reduced the number of job for the subclass 457 visa holders overseas. From the market analysis, it is analyzed tha t some of skilled people such as chefs, cooks and food manager is difficult to find so these area would be flexible. Apart from this, the time duration for the immigrants to hunt another job after completion of the sponsor job has also been extended by 28 days to 90 days (Larsen, 2013). Meanwhile, it can revamped that the amendments that has been made only restricting the overseas workers and increasing or liberalizing the policies to do work in the country.    Along with this, the government trying to give much priority to the domestic skilled workers rather than foreign workers because the immigrant for long time span are creating more competition for the Australian workers so in terms of reducing the competition government has more focused on the national priority. Apart from this, the Australian government has started training programme for the Australian workers to enhance the compatibility in the intensive labor market (Waldron and Ali, 2016). Further, the government would impose more restriction on the process of sponsorship and unlawful activities would be penalized. Further, the immigration department found out that the call the people from foreign on 457 Visa which is costly and is not effective to resolve the issue for long time so it has adopted the recommendations.   Ã‚   Moreover, English is essential for 457 Visa holders to easily get the grant from the sponsor of Australia and it had the strictness to score in English but as of now amendments it has changed toward flexible procedure for easily migration. In addition to this, it is necessary for the immigrants to track the criminal records for the applicants (Hallandwilcox, 2015). Further, the government has wet the rule for minimum two years of experience in concurrent profession. Some of the changes are implemented for employers such as they need to hire the employee below the age of 45 years while application. Along with this they need to pay the salary at the market rate. 457 Visa has also amended with new legislation as to provide the details of nominations to while an applicant is applying for subclass 457 visa (Fakhoury, 2016). Therefore, these were the proposed amendments that need to be implemented by the government of Australia. Australian government has revamped that the current regulations for the 457 Visa is not appropriate for the mostly Australian workers and economy while foreign immigrants are affecting the domestic workers by holding the job of perspective market (Qiu, 2016). Different amendments would be applied from categorized date.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The main aim of the Australian government is to reduce the priority of subclass 457 and strengthen the national people. Basically, these amendments in the 457 Visa would impact the potential Visa holders when they are going on the sponsor basis. At the same time, the employer would also be affected by the new regulations that need to be strictly followed (Anderson, 2017). Moreover, the current visa holder are pursuing in the occupation of Australian market would not be impacted. These amendments would affect the business where the business would not be efficiently retaining the talent in the industry for long time. Overall, these amendments and changes benefitted the Australian workers and best interest for them.   On the basis of above analysis in relation to the amendments in the 457 Visa for the subclass, it can be concluded that it would create difficulties for the future business implementation because it would be able to sponsor and retain the skilled workers for the business because of strict law imposing. Further, it would impact somehow current employer, it would be a challenge for new applicants. It can also be concluded that these changes would be directly or indirectly benefit the Australian skilled workers and subtle the industry to prepare the domestic labor to reduce the competition in the prevailing market dilemma. Anderson, S. (2017) Government abolishing 457 visas, Malcolm Turnbull says. [Online]. Available at: https://www.abc.net.au/news/2017-04-18/government-abolishing-457-visas/8450310 (Accessed: 19 May 2017). Bales, R., Alizia, L., Banno, M., Jockel, M., Pang, M. and Tso, C. (2017) Translational Employment Trends In Four- Pacific Countries. UCLA Pacific Basin Law Journal, 34(1), pp. 1-46.  Ã‚   Berg, L. (2015) Migrant Rights at Work: Law's precariousness at the intersection of immigration and labour. UK: Routledge.  Ã‚  Ã‚  Ã‚  Ã‚   Border, (2014) Australia’s Migration Trends 2012–13. [Online]. Available at: https://www.border.gov.au/LegacyPagesandAboutUs/Documents/statistics/migration-trends-2012-13.pdf (Accessed: 19 May 2017). Border, (2017) Abolition and replacement of the 457 visa – Government reforms to employer sponsored skilled migration visas. [Online]. Available at: https://www.border.gov.au/Trav/Work/457-abolition-replacement (Accessed: 19 May 2017).   Breen, F. (2016) Australian Immigration Policy in Practice: a case study of skill recognition and qualification transferability amongst Irish 457 visa holders. Australian Geographer, 47(4), pp. 491-509.   Breen, F. (2016) Australian Immigration Policy in Practice: acase study of skill recognition and qualification transferability amongst Irish 457 visa holders. Australian Geographer, pp. 1-20.   Oliver, D. and Wright, C. (2016) Australia’s shifting skills ecosystem: Contemporary challenges in education, training and immigration' in Industrial Relations Reform: Looking to the Future. Federation Press, Sydney, pp. 163-186. Fakhoury, R. (2016) Australia: Subclass 457 Visa Program Amended Under New Legislation - Week Of April 18 th . [Online]. Available at: https://www.mondaq.com/australia/x/535658/work+visas/AUSTRALIA+Subclass+457+Visa+Program+Amended+Under+New+Legislation (Accessed: 19 May 2017).     Ã‚  Ã‚   Hallandwilcox, (2015) Guide for sponsoring skilled personnel to Australia – the 457 visa. [Online]. Available at: https://www.hallandwilcox.com.au/guide-for-sponsoring-skilled-personnel-to-australia-the-457-visa/ (Accessed: 19 May 2017).   Larsen, G. (2013) The subclass 457 visa: a quick guide. [Online]. Available at: https://www.aph.gov.au/About_Parliament/Parliamentary_Departments/Parliamentary_Library/pubs/rp/rp1314/QG/Subclass457Visa (Accessed: 19 May 2017).   Mares, P. (2016) Unintended Consequences of Temporary Migration to Australia. Unintended Consequences: The impact of migration law and policy, pp. 81.   NEWS, (2017) What you need to know about the 457 visa changes.   [Online]. Available at: https://www.news.com.au/finance/work/what-you-need-to-know-about-the-457-visa-changes/news-story/3894724396a5c7f99491c961ae9b8088 (Accessed: 19 May 2017).   Patty, A. (2017) Are the 457 visa reforms an illusion act? [Online]. Available at: https://www.smh.com.au/business/workplace-relations/are-the-457-visa-reforms-an-illusion-act-20170420-gvokqk.html (Accessed: 19 May 2017).   Qiu, L. (2016) Australia: New policy changes to sponsoring 457 workers. [Online]. Available at: https://www.mondaq.com/australia/x/507964/work+visas/New+policy+changes+to+sponsoring+457+workers (Accessed: 19 May 2017).   Sherrell, H., Wright, F. and Howe, J. (2017) 457 abolished: How the Temporary Skill Shortage Visa works. [Online]. Available at: https://www.news.com.au/finance/work/457-abolished-how-the-temporary-skill-shortage-visa-works/news-story/3e761090198b6d12b8baddab9c77dc1a (Accessed: 19 May 2017).      Smith, D., Payne, D., Horne, M., & Claridge, D. (2016) Developments in Australian migration. Canadian Studies in Population, 43(1-2), pp. 117-145. Waldron, D. and Ali, S. (2016) New Australian 457 visa rules announced for January 2017. [Online]. Available at: https://www.workpermit.com/news/new-australian-457-visa-rules-announced-january-2017-20160927 (Accessed: 19 May 2017).  

Summary Essay Example | Topics and Well Written Essays - 500 words - 113

Summary - Essay Example ration "meeting" construes from an Algonquian Indian word "pau wau," which means "he dreams." In this definition, "pau wau" had an individual, deferential, religious tremendousness. Separating this definition, the contemporary gathering is intrigued by the all inclusive community and is a get together arranged social event. The thought of meeting began around the tribes who possessed the Great Plains from the southern prairies of Canada to the less demanding fields of Texas. In the safeguarding time, various Plains tribes formed between tribal arrangements. These unions allowed tribal-specific tunes, moves, and capacities to be exchanged. This is the evident station all around todays "intertribal meeting." The chief honest to goodness intertribal chamber in Oklahoma was the Ponca Powwow. It began in northern Indian Territory around 1879. Indian Territory was genuinely between tribal as about 67 tribes have been positively associated with territories that became Oklahoma. Into the early 1900s the Plains Indians lifestyles were rapidly deteriorating as the social orders spirits had been broken. All around World War I, American Indians selected in the military, and parts of Indian tribes that were once mortal enemies struggled side by side to shield the United States. At their homecoming most veterans laid their tribal complexities aside to hit the move floor with their partners to an ordinary drumbeat. The American flag, once a picture of the destruction of Indian lives, got an alternate status at twentieth century Indian social occasions. In a renaissance of outdated warrior social requests, celebrations began to reemerge to appreciation veterans as breakthrough warriors. Tribal seniors who reviewed specific tribal gathering helped their taking in of running capacities for Indian servicemen. Accordingly, new routines, joined with matured traditions, made to fit the times. By 1920 the Plains tribes of southwestern Oklahoma held their first between tribal committee

Analysis of Guess Whos Coming to Dinner Film Essay

Analysis of Guess Whos Coming to Dinner Film - Essay Example Outside of Dr. John Prentice, Joey constitutes perhaps the most central and important character in the film. Her characterization is such that she is distinct from virtually every other character. Clearly, the most significant difference between Joey’s character and the others is her lack of racial prejudice. Not only is her relationship with John a significant aspect of this theme, but she also demonstrates a professed love for the house-made, Tillie. While one may argue that she shares this trait with John, she is ultimately portrayed as blissfully unaware that others might feel tension at her inter-racial relationship. John even states, â€Å"It’s not that our color difference makes no difference to her, it’s that to her, there is no difference.† At a number of points throughout the film she breaks through this naivetà ©, making a number of subtle and clever comments at the expense of her mother; for instance, when her mother first encounters John, Joe y states that her mother should sit down because of her perceived shock at John being a negro. It is this knowledge that is hidden directly under her bubbly and superficial outward demeanor that is perhaps Joey’s most interesting character element. Another important character element is Joey’s happiness. Her mother makes a speech attesting to her happiness as a youth, which still pales in comparison to her happiness with John. This differentiates her from the other characters, who are depicted as tired and experienced, and also functions to increase audience sympathy for her union with John in the face of her family’s apprehension. Conversely, Dr. John Prentice is characterized throughout the film in a slightly different way than Joey. Perhaps the significant element of his characterization is the frequent reference made to his importance – Joey’s father’s assistant first states this and it is later mentioned by Monsignor Ryan.     

Environmental Case Analysis Essay Example | Topics and Well Written Essays - 750 words

Environmental Case Analysis - Essay Example The individuals in effect make up the society and hence have to decide what they want to do with their resources but the ultimate decision maker is the government who has to look after the environmental as well as economical side of each decision. The society's concern is to increase their welfare from the amount of resources that they have and the government has to take the decision with economic viability in mind, the case points out that the only way to strike a balance between the two is to have a free market economic system in place which will balance the amount of resources that need to be put in to reduce pollution and those that need to be employed else where. The major economic concepts in the case are of opportunity costs and cost benefit analysis, these concepts are the binding factors for the environmental and economic side of the argument. The analysis can be divided into two portions: the scientific point of view and the ethical point of view, talking of the scientific point of view the first thing that is to be understood is that all things that are achievable in a laboratory are not achievable in the world outside it for example clean water only exists in laboratories and not outside them. But who is to decide what clean is What is clean for some one is not clean for some one else and hence there is no agreement. ... extent does it have to be curbed Should it be cut off from its roots Should it be allowed to remain at a level These are the questions that have to be answered by the scientific side of the issue. When we speak of science, inevitably we have to speak of economics because it is economics that shows us the way to have a cost effective method of curbing pollution. Such methods and processes should be introduced, which tend to minimize maximum amount of pollution using the minimum amount of resources available. The first thing to understand is that there are a limited number of resources that every community has on its disposal and it has to decide how and where to use these resources, hence not all the resources can be used to curb pollution because then the community will have nothing to eat, wear and will have no shelter over their heads. On the other hand if none of the resources are used to curb pollution then pollution would become a major issue for that community. Hence this shows that we have to strike the right balance, that is, the right decision in the right area at the right time. As stated in the case, the right balance can only be achieved if there is a free market economy in place. A free market economy is one where every individual seeks to attain his or her goals in any suitable way he or she wants without any specific restriction or restraints and hence increase his or her satisfaction. By doing this they increase the over all utility of the community and hence in a free market economic system there is a negligible role of the government. Adam smith, the father of economics, said the free market economy operates as if an invisible hand guides each and every individual to attain their goals, and keeps on shifting the economy to the right equilibrium

Why do you choose canada to study Essay Example | Topics and Well Written Essays - 250 words

Why do you choose canada to study - Essay Example ily consider the global ramifications that a degree from a Canadian university would imply as compared to a degree from other nations around the world. With respect to the first item that has been mentioned, it is this student’s belief that Canada offers one of the highest levels of scholastic achievement and accreditation among all of the choices that have been considered. As a function of this, it is within the best interests of one who would like to further their educational career and future studies to seek out such an opportunity. Similarly, with respect to the second determinant that has been listed, it is also within the best interests of the prospective student to seek out a nation that exhibits a high degree of diversification among its respective colleges and universities. Due to the fact that diversity is a key component of the educational process, Canada again represented a high level of diversity and has therefore attracted this student to consider it high on the list of options. Lastly, with regards to the way in which a degree from a Canadian university or college would be considered within the global community, it is plainly evident that a degree from a Canadian college and/or university carries with it a high level of prestige that is recognized not only within Canada but around the world. As a function of each of these components, it is this student’s express desire to further the academic career by studying within

Imperialism, Race and Development Essay Example | Topics and Well Written Essays - 2000 words

Imperialism, Race and Development - Essay Example It is precisely for such reasons that a quick recognition of the positive qualities, the psychological fundamentals, among the poor themselves is mandatory for poverty alleviation in particular. Most of the dependency theory writers hold the opinion that the "same process that brought development to the homelands of capitalism and to North America and Australasia simultaneously brought underdevelopment to the rest of the colonized world, trapping previously autonomous societies in poverty that was self-perpetuating because any significant profits made in them was extracted by Western firms or rulers". (Frank, 1978) "Underdevelopment evolve an important feature of dependency theory with the proposition that the end of colonialism was apparent rather than real, "decolonisation" being really a transition to "neocolonialism," in which foreign capital continued to exploit the local population but with protection from a local client-state rather than from European officials. This analysis was built upon in left-wing critiques of U.S. government policy as well as of transnational corporations, which covers around 1500-1840, and elsewhere elaborated from the classic "dependency" argument in his own "world system" framework. This, however, envisaged some scope for upward economic mobility for underdeveloped countries and provided some recognition of a reality that was then becoming increasingly clear: that industrialisation was underway in formerly "underdeveloped" countries of East Asia in the 1960s to 1980s, while there had also been long-term growth of manufacturing in certain other parts of the thi rd world, most notably Brazil". (2006b) In other words, the problem was not only about poverty and underdevelopment, but also as some Caribbean economists admitted, it was all about governance and the instigated psychology of dependence. Ramesh writes, "as these researchers noted, Lewis' 'strategies for industrialisation' went beyond pure economic factors and in fact required that the population develop 'drive and appropriate attitudes'. But such 'drives', social motivations and attitudes can only find sustaining viability in an accommodating, enhancing environment. If not, even when they appear they did not blossom. The recent history of the social and political life of the Caribbean has been one of grand promises and broken expectations, of broken spirits always fighting to heal and console themselves over and over again. And the psychological consequences have been quite debilitating". (Ramesh, 2000, p. 4) When it comes to social and political life, it is true that "Power and poverty are two of the most dominant issues in social science. They seem to occupy opposite ends in the continuum of human life. In fact, power, especially the lack of it, is inextricably linked to the condition and experience of poverty. Hence, it is useful to have both a macro view of development and as well a micro view of the poverty experience. The struggle of poor people to gain

Organisation investigation Essay Example | Topics and Well Written Essays - 1000 words

Organisation investigation - Essay Example A social service is defined as any activity performed by a private or public institution whose objective is to aid disadvantage, distress or vulnerable persons or groups (Britannica, 2007). Social work has different elements involve in its realization depending on the age group the service is attending. A simple age group classification is to divide humans into three groups: minors (under age of 18), adults and elderly (above the age of 60). The elderly is a group with lots of social issues especially those associated with health since the body of humans once they reach advanced usage associated with older age starts to breakdown and deteriorate across all bodily systems. The mind is one of the systems that does not work as sharp as in the past. In the United Kingdom the legal framework for social services does not recognize the mental health issues associated with providing social services to the elderly. The mental health act of 2006 was a great improvement for the social service providers operating in the United Kingdom. The new health bill emphasizes improvements in areas such as patient autonomy, non-discrimination and protection of diversity, respect for caters, child welfare, definition of what constitute mental disorder, reciprocity, therapeutic services and criteria for detention among other improvements (Rcpsych, 2007). The community and health act of 1990 is another important piece of legislation for social services providers in the United Kingdom set up by the NHS. The act came to create guidelines and foster the creation of private health institution since the government was not doing a good job in this area and still has not able to create a public system to supply enough services to cover the demand for social services in the UK (Powell, 2001). The act created internal changes within social place agencies such as the one I work for by forcing

Is Psychology a Science Essay Example for Free

Is Psychology a Science Essay Psychology is commonly defined as scientific study of human behaviour and cognitive processes. Broadly speaking the discussion focuses on the different branches of psychology, and if they are indeed scientific. However, it is integral in this to debate to understand exactly the major features of a science, in order to judge if psychology is in fact one. There must be a definable subject matter this changed from conscious human thought to human and non-human behaviour, then to cognitive processes within psychologys first eighty years as a separate discipline. Also, a theory construction is important. This represents an attempt to explain observed phenomena, such as Watsons attempt to account for human and non-human behaviour in terms of classical conditioning, and Skinners subsequent attempt to do the same with operant conditioning. Any science must have hypotheses, and indeed test them. This involves making specific predictions about behaviour under certain specified conditions, for example, predicting that by combining the sight of a rat with the sound of an iron bar banging behind his head, a small child will learn to fear the rat, as is the case of Little Albert (1923). Also, empirical methods are used in scientific fields to collect data, relevant to the hypothesis being tested, as is the case in many psychological experiments, such as the use of brain scanning in Dement and Kleitmans 1957 study. Science is meant to be objective and unbiased. It should be free of values and discover the truths about what it is studying. Positivism is the view that science is objective and a study of what is real. For example, schizophrenia, when diagnosed as being caused due to excess dopamine, is being studied in a scientific manner. The explanation does not take into account any cultural customs or individual differences that might lead to schizophrenic behaviour. However, even in scientific research like this the person is doing the diagnosing has his or her own views, and may misinterpret behaviour because of his or her own subjective biases. For example, if someone talks about hearing voices, they may be referring to a spiritual experience, but a medical practitioner might well diagnose schizophrenia. So objective, value-free study is not easy, because the scientist has views and biases, and cultural or other issues are perhaps important factors. Some say that a truly objective study is not possible. In conclusion, its a science.

Energy Saving By Using Solar Panels Engineering Essay

Energy Saving By Using Solar Panels Engineering Essay Climate change concerns, coupled with high oil prices, peak oil, and increasing government support, are driving increasing renewable energy legislation, incentives and commercialization. New government spending, regulation and policies helped the industry weather the global financial crisis better than many other sectors. Renewable energy is energy that comes from natural resources such as sunlight, wind, rain, tides, waves and geothermal heat, which are renewable because they are naturally replenished at a constant rate. About 16% of global final energy consumption comes from renewables, with 10% coming from traditional biomass, which is mainly used for heating, and 3.4% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 3% and are growing very rapidly. The share of renewables in electricity generation is around 19%, with 16% of global electricity coming from hydroelectricity and 3% from new renewables. Si nce its emergence; renewable energy has come a long way. In was not until the 1970s that environmentalists promoted the development of alternative energy both as a replacement for the eventual depletion of oil, as well as for an escape from dependence on oil; it was at that stage that the first wind turbines appeared. On the other hand, solar had always been used for heating and cooling, but solar panels were too costly to build solar farms, until 1980. The reason why have chosen the topic of solar heating systems; solar energy for my dissertation is because among the various renewable energy sources, solar energy is one of the crucial energy sources, if not the most crucial. According to a 2011 projection by the International Energy Agency, solar power generators may produce most of the worlds electricity within 50 years, dramatically reducing the emissions of greenhouse gases that harm the environment. Before doing this report, I have to admit that the knowledge that I had regarding solar energy or solar energy systems was minimal. But since starting working on this report, I think, I have come a long way; yet, I have to admit, there has been done so much research in this field, in the past couple of decade that I would still have to go a long way before I would consider myself a specialist. This report should cater towards any individual who had heard of the solar energy, solar energy systems and how they could benefit from it. T his report also gives a brief insight into, where solar energy system (solar energy) is headed in the future. A far as the structure of my report is concerned, I will be looking into the history of solar energy, the solar energy itself, solar energy collectors solar panels; Furthermore, I would also be looking at the benefits of solar energy systems for us and the consequences, if any. On the other hand, I would also be analysing economic issues related to solar energy systems such as: the cost of heating a house or a building by the means of solar energy contra to contemporary means. Last but not the least I would be summarizing the advantages that I have discussed as well as look at some disadvantages, if there are any. I will sum up the whole report with a conclusion, thanks beforehand. History of solar energy Before we delve into the discussion of why solar energy is so needed in the world today, well first look into what solar energy really is. By definition, solar energy is that beaming light and heat that is generated from the sun. Solar energy has been used by human beings since time immemorial. The radiation that comes from solar energy along with the resultant solar energized resources such as wave power, wind, biomass and hydroelectricity all give an explanation for most of the accessible renewable energy that is present on earth. However, only an infinitesimal portion of the existing solar energy is used. Solar energy has been used by humans for thousands of years. For example, ancient cultures used energy from the sun to keep warm by starting fires with it. Ancient Egyptians built places to live that allowed stored energy from the sun during the day, and a heat release during the night. This kind of architecture: heated homes at night while keeping the temperature low during the day; buildings were designed so that, walls and floors collected solar heat during the day, that was released at night to keep them warm. If you have ever stood in the sun to get warm then you too have utilized solar thermal energy. Egyptians also used the sun as part of their mummification process, using the sun to dry dead bodies. The Egyptians used a form of passive solar power. 3rd Century B.C., Greek soldiers with the help of Archimedes, focused light on a Roman fleet by using mirrors. The Romans were invading a port city that did not have defenses ready for the attack. The mirrors were used to concentrate the energy of the sun, and cause the fleets sails to burn. The Romans retreated and the Greeks were able to prevent the invasion. The Greeks used passive solar power. 100 A.D. a historical writer by the name of Pliny the Younger, built a house in the northern part of Italy that had mica windows in one room. This one particular room demonstrated solar heating in that its mica windows stored heat, and later gave it off. This room was useful because the added heat it generated lessened the amount of wood that had to be burnt, to maintain heat. Roman bath houses had famous south facing windows that heated the rooms. Native Americans also built houses that used passive solar power. Houses were built into the side of cliffs or hills to allow storage of heat during the day, and a release of heat at night. In 1767, the worlds first solar collector was built by Swiss scientist Horace de Saussare. They also kept their homes warm through passive solar energy designs The discovery of photovoltaic happened in 1839 when the French physicist Edmond Becquerel first showed photovoltaic activity. Edmond had found that electrical current in certain materials could be increased when exposed to light. 66 years later, in 1905, we gained an understanding of Edmonds work, when the famous physicist Albert Einstein clearly described the photoelectric effect, the principle on which photovoltaic are based. In 1921 Einstein received the Nobel Prize for his theories on the photoelectric effect. Solar cells of practical use have been available since the mid 1950s when ATT Labs first developed 6% efficient silicon solar cells. By 1960 Hoffman Electronics increased commercial solar cell efficiencies to as much as 14% and today, researchers have developed cells with more than 20% efficiencies. 20% efficient means that out of the total energy that hits the surface of a solar cell; about 20% is converted into usable electricity. The first long-term practical application of PV cells was in satellite systems. In 1958 the Vanguard I, was launched into space. It was the first orbiting vehicle to be powered by solar energy. Photovoltaic silicon solar cells provided the electrical power to the satellite until 1964 when the system was shut down. The solar power system was so successful that PVs have been a part of world-wide satellite space programs ever since. The sun provides endless nonpolluting energy to the satellite power systems and demand for solar cells has risen as a result of the telecommunications revolution and need for satellites. The energy crisis and oil embargos of the 1970s made many nations aware of their dependency on controlled non-renewable energy sources and this fueled exploration of alternative energy sources. This included further research into renewable sources such as solar power, wind power and geothermal power. An economic breakthrough occurred in the 1970s when Dr. Elliot Berman was able to design a less expensive solar cell bringing the price down from $100 per watt to $20 per watt. This huge cost savings opened up a large number of applications that were not considered before because of high costs. These applications included railroads, lighthouses, off-shore oil rigs, buoys, and remote homes. For some countries and many applications, solar energy is now considered a primary energy source, not an alternative. Solar energy Solar energy is the energy derived from the sun through the form of solar radiation. Solar powered electrical generation relies on photovoltaic and heat engines. A partial list of other solar applications includes space heating and cooling through solar architecture, day lighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes. In my report, I would only be looking into a few of the above mentioned solar power harnessing techniques, due to the fact that there is a limitation towards, how much material I can present in my dissertation. Solar cell A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics e.g. current, voltage, or resistance vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source. Passive solar or active solar Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate. The Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere .Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses. The spectrum of solar light at the Earths surface is mostly spread across the visible and near-infrared ranges with a small part in the near-ultraviolet. Earths land surface, oceans and atmosphere absorb solar radiation, and this raises their temperature. Warm air containing evaporated water from the oceans rises, causing atmospheric circulation or convection. When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earths surface, completing the water cycle. The latent heat of water condensation amplifies convection, producing atmospheric phenomena such as wind, cyclones and anti-cyclones. Sunlight absorbed by the oceans and land masses keeps the surface at an average temperature of 14  °C. By photosynthesis green plants convert solar energy into chemical energy, which produces food, wood and the biomass from which fossil fuels are derived. Yearly Solar fluxes Human Energy Consumption Solar 3,850,000 Wind 2,250 EJ Biomass 3,000 EJ Primary energy use (2005) 487 EJ Electricity (2005) 56.7 EJ The total solar energy absorbed by Earths atmosphere, oceans and land masses is approximately 3,850,000 exajoules (EJ) per year. In 2002, this was more energy in one hour than the world used in one year. Photosynthesis captures approximately 3,000 EJ per year in biomass. The amount of solar energy reaching the surface of the planet is so vast that in one year it is about twice as much as will ever be obtained from all of the Earths non-renewable resources of coal, oil, natural gas, and mined uranium combined Solar energy can be harnessed at different levels around the world, mostly depending on distance from the equator. How solar power works Light (photons) striking certain compounds, in particular metals, causes the surface of the material to emit electrons. Light striking other compounds causes the material to accept electrons. It is the combination of these two compounds that can be made use of to cause electrons to flow through a conductor, and thereby create electricity. This phenomenon is called the photo-electric effect. Photovoltaic means sunlight converted into a flow of electrons (electricity). . Passive solar heating In passive solar building design, windows, walls, and floors are made to collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design or climatic design because, unlike active solar heating systems, it doesnt involve the use of mechanical and electrical devices. The key to designing a passive solar building is to best take advantage of the local climate. Elements to be considered include window placement and glazing type, thermal insulation, thermal mass, and shading. Passive solar design techniques can be applied most easily to new buildings, but existing buildings can be adapted or retrofitted. http://www.iklimnet.com/save/eco_images/five_elements_passive.gif Passive energy gain Passive solar technologies use sunlight without active mechanical systems (as contrasted to active solar). Such technologies convert sunlight into usable heat (water, air, and thermal mass), cause air-movement for ventilating, or future use, with little use of other energy sources. A common example is a solarium on the equator-side of a building. Passive cooling is the use of the same design principles to reduce summer cooling requirements. Some passive systems use a small amount of conventional energy to control dampers, shutters, night insulation, and other devices that enhance solar energy collection, storage, and use, and reduce undesirable heat transfer. Passive solar technologies include direct and indirect solar gain for space heating, solar water heating systems based on the thermo siphon or geyser pump, use of thermal mass and phase-change materials for slowing indoor air temperature swings, solar cookers, the solar chimney for enhancing natural ventilation, and earth sheltering. More widely, passive solar technologies include the solar furnace and solar forge, but these typically require some external energy for aligning their concentrating mirrors or receivers, and historically have not proven to be practical or cost effective for widespread use. Low-grade energy needs, such as space and water heating, have proven, over time, to be better applications for passive use of solar energy. Pragmatic approach to a productive passive solar energy Many detached suburban houses can achieve reductions in heating expense without obvious changes to their appearance, comfort or usability. This is done using good siting and window positioning, small amounts of thermal mass, with good-but-conventional insulation, weatherization, and an occasional supplementary heat source, such as a central radiator connected to a (solar) water heater. Sunrays may fall on a wall during the daytime and raise the temperature of its thermal mass. This will then radiate heat into the building in the evening. This can be a problem in the summer, especially on western walls in areas with high degree day cooling requirements. External shading, or a radiant barrier plus air gap, may be used to reduce undesirable summer solar gain. Active solar heating systems Active solar technologies are employed to convert solar energy into another more useful form of energy. This would normally be a conversion to heat or electrical energy. Inside a building this energy would be used for heating, cooling, or off-setting other energy use or costs. Active solar uses electrical or mechanical equipment for this conversion. Solar energy collection and utilization systems that do not use external energy, such as a solar chimney, are classified as passive solar technologies. Passive solar relies on the inherent thermo-dynamic properties of the system or materials to operate. They do not need external energy sources. https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgD_IkJFyp7rBUUxb3xEm1SONwhnhv7HoabJQtW6huJyC_Kys3OIkS77F59qLVxlV-byWBu4PmqqyLChIOKCbQziPr-wHm1lU0D1TwAQDLi0ArTZjV9jeU0jppB8fl0QNE0LYnj6th1O8C5/s1600/active-solar-heating.jpg Solar hot water systems, except those based on the thermo siphon, use pumps or fans to circulate fluid (often a mixture of water and glycol to prevent freezing during winter periods) or air, through solar collectors, and are therefore classified under active solar technology. The basic benefit of active systems is that controls (usually electrical) can be used to maximize their effectiveness. For example a passive solar thermal array which does not rely on pumps and sensors will only start circulating when a certain amount of internal energy has built up in the system. Using sensors and pumps, a relatively small amount of energy (i.e. that used to power a pump and controller) can harvest a far larger amount of available thermal energy by switching on as soon as a useful temperature differential becomes present. Controls also allow a greater variety of choices for utilizing the energy that becomes available. For example a solar thermal array could heat a swimming pool on a relatively cool morning where heating a domestic hot water cylinder was impractical due to the different stored water temperatures. Later in the day as the temperature rises the controls could be used to switch the solar heated water over to the cylinder instead. The downside to Active Solar systems is that the external power sources can fail (probably rendering them useless), and the controls need maintenance. How to buy solar panels solar water heating Shower Solar water heating can meet about a third of your hot water needs, research conducted by a UK research magazine. A solar water heating system (also known as solar thermal system) uses panels fitted to your roof to heat water for use around the home. A typical solar hot water system is able to meet around a third of a households hot water needs a saving of  £55 to  £80 on your annual water-heating bills, based on a three-bedroom semi-detached house. Householders installing solar water heating systems can get  £300 through the governments Renewable Heat Incentive Premium Payment scheme. Choosing a solar water heating system When choosing a solar water heating system, youll need to consider four major factors: your average hot water use the area of south-facing roof available your existing water heating system your budget. Youll need roughly one square meter of collector area per person in the household. Each metre of panel area will need between 30 and 60 litres of water tank volume. If you use a less efficient collector (such as flat-plate solar water heating panels), youll need to cover a larger area than if you use a more efficient collector (such as evacuated tubes). Youll also need to select system components (such as a hot water cylinder, controls and pipe work) and choose the location for your solar panels, considering shade, pipe runs, roof pitch and future access. Solar water heating installation There are plenty of solar panel installers out there, so I recommend that you always collect a range of quotes to compare. Cost effectiveness of solar water heating systems In my opinion developing common industry standards and offering public incentives is important. He emphasizes that creating public awareness programs is the key to having success in this industry, including a cleaner environment and more jobs as a consequence. It is clear that installing the application is easy for households since the technology is less complicated and cheaper than PV. According to The Solar Guide, the payback period for an investment in a solar water heating system is 3 to 5 years, although it may vary a lot in different countries due to national standards and differences in manufacturing quality. The return of investment depends on the system and the current fuel source that is being used to heat the water. It makes more sense to install a combi-system (hot water+space heating) whereby a 12-20 sq-m would completely cover a households water heating demand and a substantial part of its space heating demand in spring and in autumn. http://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/SolarTrackerRoofView300W200H.jpg/220px-SolarTrackerRoofView300W200H.jpg Solar trackers may be driven by active or passive solar technology Most solar collectors are fixed in their array position mounting, but can have a higher performance if they track the path of the sun through the sky (however it is unusual for thermal collectors to be mounted in this way). Solar trackers, used to orient solar arrays may be driven by either passive or active technology, and can have a significant gain in energy yield over the course of a year when compared to a fixed array. Again passive solar tracking would rely on the inherent thermo-dynamic properties of the materials used in the system rather than an external power source to generate its tracking movement. Active Solar Tracking would utilize sensors and motors track the path of the sun across the sky. This action can be caused by geographical and time data being programmed into the controls. However, some systems actually track the brightest point in the sky using light sensors, and manufacturers claim this can add a significant extra yield over and above geographical tracking. How does Solar Thermal work? The basic mechanism of solar thermal energy is to collect the solar radiation and transfer the heat directly or indirectly to its final destination via a heat transfer medium usually a fluid. The most commonly used applications are Domestic Hot water (DHW), Combined DHW and Space Heating, District Heating, Solar Cooling and Air-Conditioning. High Temperature Solar Thermal Electricity Generation is also among solar thermal applications. (e.g. solar tower and parabolic through applications). The key component of the solar thermal systems is the collectors which can be divided into two groups: Unglazed collectors have been used in the industry for a long time, mainly for heating open-air swimming pools. There is no heat exchanger in the system, and the water is flowing directly through long thin tubes. It is cheap and easy to install. Due to the simplicity of unglazed collectors, they cannot fulfill the needs for delivering full-time energy. Unglazed collectors are mainly used in the USA and in Australia. Glazed collectors are much more efficient in supplying continuous heating and achieving higher temperatures than unglazed ones. Glazed collectors are usually rectangular boxes covered by glass, containing little pipes and tubes and a heat absorbing material inside. There are different types of collectors for different means of use. Glazed collectors are commonly used in China, Europe and the Middle East. Solar thermal collector A solar thermal collector is a solar collector designed to collect heat by absorbing sunlight. The term is applied to solar hot water panels, but may also be used to denote more complex installations such as solar parabolic, solar trough and solar towers or simpler installations such as solar air heat. The more complex collectors are generally used in solar power plants where solar heat is used to generate electricity by heating water to produce steam which drives a turbine connected to an electrical generator. The simpler collectors are typically used for supplemental space heating in residential and commercial buildings. A collector is a device for converting the energy in solar radiation into a more usable or storable form. The energy in sunlight is in the form of electromagnetic radiation from the infrared (long) to the ultraviolet (short) wavelengths. The solar energy striking the Earths surface depends on weather conditions, as well as location and orientation of the surface, b ut overall, it averages about 1,000 watts per square meter under clear skies with the surface directly perpendicular to the suns rays. A solar collector works to convert and concentrate solar energy into a more usable form. For example, a thermal collector may use a parabolic array of mirrors to focus, direct, and reflect the light of the sun to a smaller point where the heat can be used to drive some sort of turbine engine by heating the driving fluid. Another type of collector may use a flat panel array of solar photovoltaic cells to convert solar energy directly into electricity. Some metals exhibit a photoelectric property whereby when the metal is exposed to light, it causes electrons to be emitted. These metals may be arranged in a valence-covalence band configuration which generates the actual voltage within the array. Types of solar collectors for heat Solar collectors fall into two general categories: non-concentrating and concentrating. In the non-concentrating type, the collector area (i.e., the area that intercepts the solar radiation) is the same as the absorber area (i.e., the area absorbing the radiation). In these types the whole solar panel absorbs the light. Flat-plate and evacuated-tube solar collectors are used to collect heat for space heating, domestic hot water or cooling with an absorption chiller. Types of solar collectors for electricity generation Parabolic troughs, dishes and towers described in this section are used almost exclusively in solar power generating stations or for research purposes. Although simple, these solar concentrators are quite far from the theoretical maximum concentration. For example, the parabolic trough concentration is about 1/3 of the theoretical maximum for the same acceptance angle, that is, for the same overall tolerances for the system. Approaching the theoretical maximum may be achieved by using more elaborate concentrators based on non-imaging optics. Parabolic trough http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Parabolic_trough.svg/250px-Parabolic_trough.svg.png Parabolic torough This type of collector is generally used in solar power plants. A trough-shaped parabolic reflector is used to concentrate sunlight on an insulated tube (Dewar tube) or heat pipe, placed at the focal point, containing coolant which transfers heat from the collectors to the boilers in the power station. Parabolic dish http://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Parabolic-dish.jpg/220px-Parabolic-dish.jpg http://bits.wikimedia.org/static-1.21wmf3/skins/common/images/magnify-clip.png Solar Parabolic dish It is the most powerful type of collector. One or more parabolic dishes concentrate solar energy at a single focal point, -similar to a reflecting telescope which focuses starlight, or to a dish antenna used to focus radio waves. This geometry may be used in solar furnaces and solar power plants. There are two key phenomena to understand in order to comprehend the design of a parabolic dish. One is that the shape of a parabola is defined such that incoming rays which are parallel to the dishs axis will be reflected toward the focus, no matter where on the dish they arrive. The second key is that the light rays from the sun arriving at the Earths surface are almost completely parallel. So if the dish can be aligned with its axis pointing at the sun, almost all of the incoming radiation will be reflected towards the focal point of the dish-most losses are due to imperfections in the parabolic shape and imperfect reflection. Losses due to atmosphere between the dish and its focal point are minimal, as the dish is generally designed specifically to be small enough that this factor is insignificant on a clear, sunny day. Compare this though with some other designs, and you will see that this could be an important factor, and if the local weather is hazy, or foggy, it may reduce the efficiency of a parabolic dish significantly. In dish-stirling power plant designs, a Stirling engine coupled to a dynamo is placed at the focus of the dish, which absorbs the heat of the incident solar radiation, and converts it into electricity. (Solar) Power tower A power tower is a large tower surrounded by tracking mirrors called heliostats. These mirrors align themselves and focus sunlight on the receiver at the top of tower, collected heat is transferred to a power station below. Advantages Very high temperatures reached. High temperatures are suitable for electricity generation using conventional methods like steam turbine or some direct high temperature chemical reaction. Good efficiency. By concentrating sunlight current systems can get better efficiency than simple solar cells. A larger area can be covered by using relatively inexpensive mirrors rather than using expensive. Concentrated light can be redirected to a suitable location via. For example illuminating buildings. Heat storage for power production during cloudy and overnight conditions can be accomplished, often by underground tank storage of heated fluids. Molten salts have been used to good effect. Disadvantages Concentrating systems require sun tracking to maintain Sunlight focus at the collector. Inability to provide power in diffused light conditions. Solar Cells are able to provide some output even if the sky becomes a little bit cloudy, but power output from concentrating systems drop drastically in cloudy conditions as diffused light cannot be concentrated passively. Solar panel A solar panel (also solar module, photovoltaic module or photovoltaic panel) is a packaged, connected assembly of photovoltaic cells. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Each panel is rated by its DC output power under standard test conditions, and typically ranges from 100 to 320 watts. The efficiency of a panel determines the area of a panel given the same rated output an 8% efficient 230 watt panel will have twice the area of a 16% efficient 230 watt panel. Because a single solar panel can produce only a limited amount of power, most installations contain multiple panels. A photovoltaic system typically includes an array of solar panels, an inverter, and sometimes a battery and or solar tracker and interconnection wiring. Theory and construction Solar panels use light energy (photons) from the sun to generate electricity through the photovoltaic effect. The majority of modules use wafer-based crystalline silicon cells or thin-film cells based on cadmium telluride or silicon. The structural (load carrying) member of a module can either be the top layer or the back layer. Cells must also be protected from mechanical damage and moisture. Most solar panels are rigid, but semi-flexible ones are available, based on thin-film cells. Electrical connections are made in series to achieve a desired output voltage and/or in parallel to provide a desired current capability. The conducting wires that take the current off the panels may contain silver, copper or other non-magnetic conductive transition metals. The cells must be connected electrically to one another and to the rest of the system. Externally, popular terrestrial usage photovoltaic panels use MC3 (older) or MC4 connectors to facilitate easy weatherproof connections to the rest of the system. Bypass diodes may be incorporated or used externally, in case of partial panel shading, to