Tuesday, May 26, 2020
Solar Energy The Ultimate Renewable Energy Resource Essay
The current use of fossil fuels as our main energy source has two drawbacks: their inevitable depletion and the pollution associated with combustion. These two drawbacks in addition to the growing concern of global warming has pushed for the development of more sustainable sources of energy, namely solar energy and its derivatives (i.e. wind power). Solar energy is appealing for its potential to meet all our demands, while proving to be a pollution free resource.(Bohn, 2009) Solar energy originates from the thermonuclear fusion reactions occurring in the sun. Leaving all the byproducts of the reactions behind in the sun, the energy that reaches the Earth is pure radiant energy. This energy represents the entire electromagnetic†¦show more content†¦The clouds absorb 10% off the energy, while reflecting about 25%, and allow about 17% to pass through. The atmosphere absorbs 9%, reflects 9%, and transmits 6% of the solar energy. Twenty-four percent of the solar energy directly reaches the ground. Overall, about 47% (17+6+24) of the sun’s energy striking the Earth reaches the ground, where it is collectable by solar devices. These devices are used generally for two purposes: to heat water and/or living spaces and to produce electricity. Solar energy is used to heat water for homes and buildings. Two methods used to accomplish this are the passive system, which has no moving parts and strictly relies on the convection currents, and an active system which uses pumps to move the liquid. In both systems, a solar device called a flat bed collector absorbs the sun’s energy to heat the water. The collector consists of a thin, broad box with a glass or clear plastic top and a black bottom with water tubes embedded in it. The black bottom allows for the maximum amount of heat absorption while the clear cover and interior insulation prevent heat loss. As water is heated in the pipes it rises up to a storage tank where it can then be sent throughout the house for consumption. Cooler water moves into the pipes and forms a convection cycle or current. In the active system, antifreeze is used as the fluid instead of water so it remains a liquid if the outside temperature drops below freezing. Also, a heatShow More RelatedSolar Energy : The Ultimate Renewable Resource Manish Kumar1264 Words  | 6 PagesSOLAR ENERGY IS THE ULTIMATE RENEWABLE RESOURCE                                           Manish Kumar (EE B.Tech)                                                                                                               Universal Institute of Technology, Garhi (Hisar) Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â à ‚                                                                    manishboora13@gmail.com   Abstract-The energy availability is essentially needed for all living beings in life .TheRead MoreNew And Alternative Sources Of Energy1311 Words  | 6 Pages Today s society uses enormous amounts of energy. *The shadow of our presence on this planet is a result of generations upon generations of production and utilization of energy*. New and alternative sources of energy are being developed to replace the declining accessibility of coal and fossil fuels. Use of renewable energy is a key component in combatting the climate change that has become a major issue in the 21st century. Reducing our impact on the climate as a result of greenhouse gas emissionsRead MoreClimate Change Has Been Recently A Hot Debate Among Politicians, Industry Experts And Scientists1362 Words  | 6 Pagesbeen the major energy source for technology developments since industrial revolution era. Therefore, to reduce fossil fuel consumption, it is necessary to find out potential alternatives. There are some realistic options compatible with Australian climate and resources. First attractive option is renewable energies, most importantly wind farms and solar therma l. Second serious option is nuclear energy. Finally the other practical alternative is a combination of renewable energies with less pollutantRead MoreThe Energy Of Solar Energy1462 Words  | 6 PagesInstitute for Energy Research and the U.S. Energy Information Administration, solar energy makes up only 0.5% of total energy consumption in the United States, and over 65% of consumed energy is natural gas and petroleum. (2016) These statistics show that nearly two-thirds of the energy the United States uses is not only non-renewable but the processess of harnessing it also causes pollution. Solar Energy is energy that is transferred through solar radiation in the form of electromagnetic energy. In theRead MoreThe Current Demand For Energy1237 Words  | 5 PagesEurope experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a de crease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. Besides these crises inRead MoreThe Current Demand For Energy1224 Words  | 5 PagesEurope experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a decrease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. Besides these crises inRead MoreThe Current Demand For Energy1238 Words  | 5 PagesEurope experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a decrease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. Besides these crises inRead MoreThe Cost Of Fossil Fuels1147 Words  | 5 PagesEnergy Policy Sheldon Fogle Telescope to Microscope April 22, 2015 Global Crisis Our species as a whole is very successful in many advancements such as technology, in society all together, and just overall in life but, currently we are failing our environment. Since our world is an immense place that consumes so much energy our demand is high. The ultimate goal is to no longer rely on nonrenewable energy sources, which we so strongly rely on today. Baby Steps are beingRead MoreThe Importance Of The Sun And How We Can Use It Our Benefit?1587 Words  | 7 Pagesmore. Scientists have been trying to use the sunlight as a way to produce energy. For years, we have used fossil fuels as means to produce electricity. Fossil fuels include resources such as oil, coal, and natural gas, which are non-renewable energy sources. These have slowly ruined and polluted our planet but now, people have turned to renewable energy to make your planet better again. Renewable energy sources include, solar, geothermal, biomass, and wind. As a result, many people are now investingRead MoreNuclear Energy Is Essential For The Modern World1400 Words  | 6 Pagesefficient, and safer ways to generate energy that plays an enormous role in keeping modern civilization moving forward. This issue gained immense importance after President Trump proposed budget cuts for science programs affecting nuclear energy research programs. Science energy research programs offer tons of knowledge in regard to better understanding sustainable nuclear energy that contributed to tremendous breakthroughs in the last decades. Nuclear energy is essential for the everyday modern world
Friday, May 15, 2020
The Effect Of Divorce On Children - 847 Words
become more unmanageable. According to Sirvanli-Ozen, recent studies confirm that the impacts of divorce on children are not restricted to the childhood period but are manifest during adolescence and adulthood as well. Many studies on the subject show that children who have experienced parent divorce have a lower degree of psychological accord and lower socioeconomic status in their adulthood (Amato Keith, 1991b; Biblarz Raftrey, 1993; Ross Mirowsky, 1999; Amato, 1996) and have more problems, conflicts and fluctuations as well as less security in their marriage (Ross Mirowsky, 1999; Webster, Orbuch, House, 1995). According to Fagan and Churchill, it is revealed that children of divorced mothers have poorer and less simulating home environments. Furthermore, divorced mothers, despite their best intentions, are less able than married mothers to give emotional support to their children. Divorce also causes a slight decline in children’s trust of their mothers when parental divorce occurs between birth and age four; however, after controlling for the quality of the parent-child relationship, this effect all but disappears. Compared with continuously-married mothers, divorced mothers tend to be less harshly and more inconsistently, especially during the first year following the divorce. Fagan and Churchill goes on to state that divorced mothers have particular problems with their sons, though their relationship will likely improve within two years, even if asShow MoreRelatedEffects Of Divorce On Children And Divorce1460 Words  | 6 Pagestoday’s world, most people accept divo rce or separation as a way of life. Parents are unaware or do not understand the damage it can have on their children. However, in some instances, it is better to get out of an abusive relationship because that can be as toxic as divorce. On average, 50% of children who are born with married parents, will experience divorce before the age of 18 (Children and Divorce Baucom, 2010-2017). Along with divorce statistics, 40% of children in America are raised withoutRead MoreDivorce Effect On Children : Divorce1825 Words  | 8 PagesApril, 2016 Divorce Effect on Children Divorce seems to become more and more common nowadays. Divorce can be a simple or complicated process depending if children are involved. This process can have negative and positive effects in a child s life. A divorce is the legal process of a marriage coming apart. A divorce with children involve cost more and takes about eleven months for the marriage to end. The majority of the divorces happening in the United States involve children. Divorce has differentRead MoreThe Effects Of Divorce On Children And Children1255 Words  | 6 Pages The effects of divorce on children Throughout time, people from all over the world have chosen to live together, or â€Å"get married†. Marriage is a beautiful thing, but there are some couples who are unable to maintain their relationship, because they choose divorce as a solution to cope with the problems between husband and wife. Although divorce can be solution to cope with problem between the husband and wife, it still has dangerous effects especially on their children. Children with divorced parentsRead MoreEffect Of Divorce On Children1068 Words  | 5 PagesEffects of Divorce on Children While divorce may reduce strain on a failing marriage, it may cause damaging effects on the children. Often times parents are too concerned on the marriage to notice the effects on children. From the way parents react in front of the children to new marriages all can directly affect the daily lives, and behavior of children. Though, there are ways to mitigate some of the issues that can come with divorce, possibly avoiding some of the effects all together. UnfortunatelyRead MoreDivorce : The Effect On Children1084 Words  | 5 PagesNicole Halterman Professor Tausch CTI 102 D Written Communication 4 October 2014 Divorce: the Effect on Children In today’s society, divorce has become a normal occurrence. Married couples today are getting divorces due to many different reasons; conflicts in the marriage, a loss of romantic feelings, perhaps a spouse is having an affair, or other types of problems. Most divorces have children that are really young and due to their age, they do not have any idea how to deal with this type of situationRead MoreDivorce And Its Effects On Children1296 Words  | 6 Pages50% of all the children born to married parents today, will experience the divorce of their parents’ before they are eighteen years old. Divorce in and of itself doesn’t necessarily harm a child, but the conflict between parents does. A child’s behavior correlates directly with the effects of their parents’ separation. Deep emotional wounds are created before, during, and after divorce and separation. It is rare that you find a child that actually wants their parents to separate, unless the ma rriageRead MoreDivorce And Its Effects On Children1343 Words  | 6 Pagesknow that the divorce rate in the United States hovers around fifty percent, including forty percent under the age of 21. In that fifty percent one of every six adults is likely to go through a divorce twice. Not only does divorce affect the adults involved, but forty percent of children in the United States will experience parental divorce (Portnoy, 2008). Children with divorced parents struggle with negative consequences emotionally, mentally, and academically compared to those children from intactRead MoreDivorce And Its Effect On Children998 Words  | 4 PagesDivorce has become very popular in the United States. According to the U.S. Census Bureau, on average 50% of marriages result in a failed marriage. This percentage has been at it’s all time high. Not many couples have sustained a successful marriage in present days. Divorces have been around for a long time, and unfortunately kids have a lways been affected the most according to their age. As a result of divorce, there are many children that have to go through this situation at a very young ageRead MoreEffect Of Divorce On Children1207 Words  | 5 Pagesmarriages that end in divorce has been steadily increasing. When a marriage ends children are impacted and it’s not only emotional and devastating the couples but this also has a huge effect on the children of all ages involved. Many parents go through a divorce disaster with little knowledge of the effects that the children may go through. Some of the most common impacts that divorce has on children include the fact that children tend to start to blame themselves for the divorce, adjusting in areasRead MoreChildren Of Divorce And Its Effect On Children913 Words  | 4 PagesChildren of Divorce Children of divorce are numerous, the effects of their biological parents separation and subsequent divorce has lasting effects on their behavior, academics, and their emotions. No one seems to care about the prevalence of divorce in society today; it is no longer considered taboo. Every year more than half of all marriages between a male and female end in divorce (Weaver Schofield, 2015), and data from the 1990 census states that over one million
Wednesday, May 6, 2020
Learning Theories Essay - 6222 Words
Learning Theories †¢ The Technological Revolution †¢ The Spectrum of Learning Theories †¢ Behaviorism †¢ Constructivism †¢ Fitting the Other Theories into the Spectrum †¢ Theory of Multiple Intelligence †¢ Learning Theories and the Brain †¢ Brain Structures †¢ Implications for Learning Theory †¢ Implications for Multimedia †¢ References By Darren Forrester Noel Jantzie Kilde: http://www.acs.ucalgary.ca/%7Egnjantzi/learning_theories.htm This chapter takes a brief look at the two major categories of learning theories (behaviorism and constructivism), the major theorists within those categories, and the implications of those theories for the use of multimedia and communications and†¦show more content†¦They in effect, devote a whole chapter of their text just to describe the many ways of defining learning. While it may seem somewhat premature to evaluate the aforementioned definition of learning and to equate it with a specific theory, it is important to recognize that intervention in the learning process can imply many different things. The degree of intervention, by who or what and how, are the defining factors of a learning theory. These factors help distinguish the many different theories. As you will see these theories are not stagnant. They are evolving and changing as we discover new ways of viewing human cognition. The mechanistic model of the mind of the behavior era has given way to the logical-computational model favored by artificial intelligence and cognitive science theorists (McLellan, 1996, p.6). Don Tapscott, in his book Growing Up Digital: The Rise of the Net Generation, argues that we are now in a digital era of learning. According to Tapscott, a transformation in learning is taking place from what he labels broadcast learning to interactive learning. No longer are todays generation of learners satisfied in being the passive recipients of the traditional teaching process, rather, they want to discover it for themselves by becoming interactive with the learning. The net generation children using GlobaLearn [a web site], are beginning to process information and learnShow MoreRelatedLearning Theories : A Learning Theory1164 Words  | 5 Pages Learning theories video script 8) What is meant by learning theories? Learning theories are essentially explanations of how learning occurs represented through conceptual frameworks in order to explain changes in behaviour and how knowledge is absorbed, processed and retained during learning. The learning theory adopted during teaching as well as cognitive, emotional, environmental influences and prior experience, all play a part in: A change in individual’s knowledge Ability to perform a skillRead MoreLearning Theories Of Learning And Teaching Essay1128 Words  | 5 PagesLearning Model and Theories in Practice Sheila Morgan Richard R. Wiley School of Education At Walden University Abstract Education has long been the center of reform with new ideas about learning and teaching. Educators are regularly introduced to new teaching strategies, curricula and rigorous standards in an effort to provide effective instruction to students. However, the pursuit of proficiency in mathematics and reading through the use of research-based methods requires an understanding ofRead MoreThe Theory Of Learning Theory1019 Words  | 5 Pagesproposed his Mastery Learning Theory in 1976 (1). However, the idea of mastery learning was not authentic to Bloom; the origin of these concepts were found in the writings of Greek philosophers including Aristotle. Bloom’s major contribution to these principles is time as the foundation of mastery learning is the ability for the student to show they have mastered content before progressing to the next unit or area (2). Bloom’s Taxonomy, born from the Mastery of Learning Theory, is a scale used toRead MoreLearning Theories : Learning Exp erience Essay1419 Words  | 6 PagesLearning Theories 1. Learning experience The learning experience in question is focused on the time a new smartphone was acquired to replace a simple cellphone. The new phone was touch screen type, with Wi-Fi and improved connectivity. In addition, it had Bluetooth capability as well as microUSB capability as opposite to the older phone. The social media and communication applications like WhatsApp, Facebook, Skype, emailing capabilities, and twitter were also part of the new phone. The learningRead MoreThe Information Of Learning Theories771 Words  | 4 Pagesknowledge about how people learn? This course gave me the opportunity to rediscover and learn and understand my learning style and strategies. It provided me with a better understanding of the different learning styles and theories. What I found surprising was the fact that as an instructional designer you can increase the motivation level in the learner. Instruction designers can achieve learning environments and stimulate and sustain motivation, even though they cannot control it. The learner is theRead MoreConstructivism And The Learning Theory1346 Words  | 6 PagesTransfer of Learning: Constructivism Constructivism is the learning theory that focuses on observation by acquiring data and thereafter reexamining, altering, and updating information to be useful in the present time. Humans process experiences, knowledge, and conception of life based on their impressions of their past. As individuals experience an unfamiliar event, they will attempt to integrate it with their knowledge and past, therefore replacing old outdated or incorrect data with new more pertinentRead MoreThe Reflection Of Learning Theory1900 Words  | 8 PagesReflections of Learning Theory Learning to Read As someone who struggled with reading, the process I went through in regards to my early reading instruction was frustrating and difficult. I was a public schools student from pre-school through second grade. During my years in pre-school and kindergarten, I remember learning the letters of the alphabet and the sounds that accompany each letter. As time progressed and I reached second grade, I began struggling with reading words. Due to my struggleRead MoreTheories And Theories Of Learning1616 Words  | 7 PagesTheories of Learning: A theory of learning is defined as contemporary trends in learning. However, in my understanding, I would say that a theory of learning is a manner or way in which a person can be taught. I also believe that there are various theories to learning. To elucidate, all around the world various tutors may use different methods to teach young students. There are two methods which I will be describing in detail, Kolb’s theory from 1984 and Honey and Mumford’s theory from 1982. Read MoreLearning Styles and Learning Theories963 Words  | 4 Pages Building on from the learning styles and theories I have covered, it is clear to see that although they target multiple learning groups; they fail to underpin any techniques, skills and strategies to become an effective learner. â€Å"Many students can perform and obtain good results, but that itself may be insufficient to make them effective learners. Often the distinction between performance and learning is blurred and many students have difficulty reflecting on how they can learn to become betterRead MoreLearning Theories Within The Elementary Classroom2386 Words  | 10 Pagesthe most helpful theories that may be implemented throughout the kindergarten learning environment. Effective teacher characteristics will be identified and why they are imperative for this particular age group. Young children have different learning characteristics and it is important for teachers to recognize and accommodate to the needs of their students. Throughout this course, I have discovered certain characteristics about myself and I will elaborate on my unique learning styles. Within
Tuesday, May 5, 2020
My Medical Statement Of Purpose Essay Example For Students
My Medical Statement Of Purpose Essay My name is . I am an African descent and a Nigerian in particular. I am a social person. I am someone with great aspirations and also am I caring by nature. I derive joy from putting smiles on the faces of people. This is because I have a very humane spirit. If one were to ask my friends to describe me, they would portray me as a very kind, pleasant, diverse, active and intelligent young man. I think one of my most distinguishing characteristics is the diversity of knowledge that I possess. I am a science student. And I am a young man with scientific aptitude and an interest in medicine. I also have a passion for traveling and understanding different cultures of the world. All these elements have given me a very broad outlook, with varying certificates and awards of knowledge in a range of topics. I strongly believe that although some are not related directly to my intended field of study, but I suppose that all these qualities will influence my medical work at the University of Tartu. My purpose to study medicine in Tartu is quite a simple one. This is because it is a city of vast educational and cultural diversity. As I said earlier on, I love understanding different cultures of the world. And Tartu in particular is an important industrial and cultural center. Manufactures include footwear, agricultural machinery, printed materials, and lumber. The University of Tartu has been into existence for centuries now and has witnessed both past and present, intellectuals of great timber and caliber. Out of ten centers of excellence, six are established at the University. People go into different professions for quite a lot of reasons. Some go in for the money; some go in for the fame and so on and so forth. My first reason why I became interested in medicine is because of the love I have for humanity. There are numerous areas in medicine that require urgent attention; one of them is the fight against disease pathogens that are responsible for millions of deaths. Today, diseases like tuberculosis, malaria and river blindness that scientists once thought they had won the battle against are now staging a comeback. These bacteria and viruses are now resistant to control measures drugs previously used. This poses an enormous threat to the entire world population. For the sake of humanity, I would engage myself with medical research with the aim of coming up with drugs that would fight diseases once and for all. Most pharmaceutical companies charge high prices for their drugs against HIV/AIDS anti-retroviral drugs, thereby excluding third world countries from the benefit of this medical research. My research findings will be made available to everyone at a very low cost; through this, I believe that my findings will benefit mankind. Just as Alfred Nobel said Scientific research shouldnt be for the sake of prosperity but to save humanity. The human race is at the verge of a terrible catastrophe. There is urgent need to help fight these old diseases that one thought had been eradicated, as well as newly evolved strains like Ebola, and HIV/AIDS. The proceeds from the sale of these drugs would be ploughed back into more research for the benefit of mankind. My other impression of medicine occurred when I had a testicular tuction as doctors said. It was a very painful and serious case that repeatedly required the assistance of physicians in dealing with me. My doctors were always there for me, day in day out. The respect that I bestowed upon doctors, and the doctors ability to ease suffering, sparked a desire to one day become a physician myself. This was an ambitious goal for someone coming from a family in which no one had obtained a professional degree. However, my traditional family-oriented culture, emphasizing doing good for others, contributed to this decision to pursue a career in the medical field. Furthermore, my inbuilt individualistic spirit gave me the confidence and opportunity to undertake a challenging medical career.
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