Data Structure Using C++ Essay Example | Topics and Well Written Essays - 2000 words

Data Structure Using C++ - Essay Example In the context of the above brief discussion, Big O notation can be defined as a description of the growth rate of the order of a function T(N) as N becomes very large (Ellard 1997). In C++, the only difference between classes and structures is that all the members and base classes in structure are public by default, whereas, classes have private members and base classes by default. Dynamic Objects are those objects whose lifetimes are independent of the existence of the scope in which they were created and therefore, they give programmers a greater flexibility in managing the objects (Kafura 1996). In C++, a dynamic object can be created using a â€Å"new† operator which returns a pointer to a newly constructed object. On the other hand, to destruct a dynamic object in C++, a â€Å"delete† operator is used which takes an argument of a pointer variable that holds the pointer to the object that is returned by the â€Å"new† operator at the time of creating a dynamic object (Kafura 1996). The free store is a dynamic memory area which is available to allocate (by using the â€Å"new† operator) and deallocate (by using the â€Å"delete† operator) storage for objects during the execution of the program. A â€Å"null pointer† is a special kind of pointer which is distinguishable from all other pointer values and is not the address of any object or function. It is used to refer to the pointer which is â€Å"not allocated† or â€Å"not pointing anywhere yet†. However, it is important to note that a null pointer is not the same as an uninitialized value (Summit 1994). (a) A destructors is the special kind of function with the same name as its class prefixed by a ~ (tilde) which is called for a class object to deallocate memory and do other cleanup for a class object and its class members when the object passes out of scope or is explicitly deleted. For example: An AVL tree, also called height balanced, is

London Essay Example | Topics and Well Written Essays - 250 words

London - Essay Example However, temperatures below -20 degrees centigrade have been noted in the past one decade, but their accuracy is yet to be validated (Anderson, p. 27). The city has a cluster of activities, ranging from streets to places of entertainment. It is also a city with numerous economic activities since it is considered as a manufacturing center with a good industrial network. People working in the city engage in both official and casual activities. Examples of those who engage in official activities include teachers, lawyers, doctor and bankers. On the other hand, the casual workers include craftsmen, builders and wood choppers (Burling, p. 207). London has a rapidly growing population. The population has hit more than seven million over the past one decade. People are originating from all parts of the world to live in the city (Boulton, p. 105). They have come with different lifestyles and colorful festivals. That is why London is considered as a multicultural city since the Roman times. Currently, about a quarter of the city’s inhabitants are members of ethnic minorities. With the diverse culture of its inhabitants, London has a variety of dishes. These dishes include delicacies such as dosa deli, churros Garcia, grilling Greek and the orange buffalo (Lawley, p.

Hurricane Katrina Was a Man-Made and Natural Disaster Essay Example for Free

Hurricane Katrina Was a Man-Made and Natural Disaster Essay The hurricane, of course, was a natural disaster. The after effects like the levees breaching, people starving and dieing in the streets, how the government handle the situation were all man made. The reason being a man made were , The man-made part of the disaster is that the government knew the levees wouldnt hold up in a Category 3 hurricane, and they didnt shore them up anyway. What was also man-made was the fact that the government told people to go to the Superdome, and when they did, they were stranded and many died a painful death. The reason being a natural disaster, New Orleans is below sea level, there wasnt much anyone could do to prevent it. A lot of people say that President Bush was lazy and uncaring about the problem and refused to help. However, the truth is he couldnt. In the case of a natural disaster, its up to the Governor of said area to either fix the problem or call in for help. The Governor in charge of that 5 years ago failed to respond, putting our former president in a tough situation. Eventually the government stepped in when it was clear there was no other choice, but saying Katrina was Bushs fault is like saying the oil spill is Obamas. It was a terrible natural disaster that happened 5 years ago, I say we put the past in the past.

Comparing Truth in The Education of Children, Paradise Lost and Hamlet

Nature of Truth in The Education of Children, Paradise Lost and Hamlet      Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   To some, truth is something that is absolute and unchanging. To others, truth is volatile and inconstant. In the 16th and 17th century, the foundations of civilization itself had been shaken. Many of the ideas which were thought to be absolutely true had been plunged into the depths of uncertainty. The cosmological, geographical, and religious revolutions called into question the nature of truth itself. It is no wonder, then, that some of the great writers at the time included within their works a treatise on the ways in which truth is constructed. Because of the major ideological revolutions that shaped their world, Milton, Montaigne, and Shakespeare all used characters and theatrical devices to create their own ideas on the construction of truth.    As a result of Milton's failed political aspirations, he believes that individuals do not construct truth, or decide for themselves what the truth is; instead, individuals receive the truth directly or indirectly from God. Conversely, deception comes from Satan. In Paradise Lost, Milton sets up this idea by forcing good to result only from obedience to God's will and evil to result whenever God is disobeyed. Dr. Evans' argument that Milton's ultimate point in all this is to express a moral position that is very extreme, that no quality or action can be innately good or evil, is firmly rooted in this model. What determines the morality of anything we do is in whose service we do it. Since Raphael was sent from God, his warning is true and divine. Since Satan disobeyed God, his ideas are all false lies. Part of Milton's ideology may have come from his own life experiences. After the restorat... ...FCS, 2000.    Brentano, Franz, The Origin of our Knowledge of Right and Wrong, trans. Cecil Hague (London: Constable, 1902).    Fish, Stanley Eugene. Surprised by Sin: The Reader in Paradise Lost. New York: St. Martin's Press, 1967.    Milton, John. Paradise Lost. Ed. Roy Flannagan. New York: Macmillan, 1993.    Patrides, C.A. Milton and The Christian Tradition. (Oxford: Clarendon Press, 1966)    Montaigne, Michel de. The Complete Essays of Montaigne. Trans. DonaldM. Frame. Stanford: Stanford UP, 1958.    Moore, G. E., Review of The Origin of our Knowledge of Right and Wrong by Fritz Brentano, International Journal of Ethics, vol. 14 (1903), pp. 123-8. -----, 'Nature of Truth', Mind, vol. 16 ns, no. 62 (April 1907), pp. 229-35.    Shakespeare, William. Hamlet. 1600? Ed. Sylvan Barnet. New York: Signet Classic, 1998.

Apes Miller Ch. 1 Questions

Miller Chapter 1 Reading Questions 1. Three ways that human activities are affecting the environment include our exponential increase in population and our resource consumption, which have degraded the air, water, soil, and species in the natural systems that support our lives and economies. A third way is limiting the access that other species have to resources. 2. The goals of environmental science are to learn how nature works, how the environment affects us, how we affect the environment, and how we can live more sustainably without degrading our life-support system. 3.Environmentalism is a social movement dedicated to protecting the earth’s life-support systems for us and other species, and is political in nature. Sustainability, also known as durability, is the ability of earth’s various systems to survive and adapt to changing environmental conditions indefinitely. 4. The five steps towards sustainability are understanding the components and importance of natural capital, recognizing that human activities degrade natural capital by using resources faster than they can be renewed, looking for workable solutions, making trade-offs or compromises, and recognizing that individuals matter.They must be supported by sound science, or the concepts and ideas that are widely accepted by experts in a particular field of the natural or social sciences. 5. Natural capital is the natural resources and services that keep us and other species alive and support our economies. It changes over millions of years in response to environmental changes such as global warming and cooling and huge asteroids hitting the earth. 6. Economic growth is an increase in the capacity of a country to provide people with goods and services.It’s measured by GDP, the annual market value of all goods and services produced by all firms and organizations, foreign and domestic, operating in a country. It goes up with either a population increase, more production and consumpti on, or both. Changes in this growth are measured by per capita GDP, or the GDP divided by the total population at midyear. Economic development is the improvement of human living standards by economic growth. The United Nations classifies this based on a country’s degree of industrialization and their per capita GDP. 7. Developed countries are highly industrialized and have high average per capita GDP.All other nations are developing countries, whether they are middle-income or low-income. Developing countries tend to have the greatest population increases, as well as the greatest disparities between the rich and the poor as far as income goes. 8. 82% of the world’s population comes from developing countries. 9. 1. 5% of the world’s population growth comes from developing countries, as compared to merely 0. 1% in developed countries. 10. The rule of 70 calculates how long it takes to double the world’s population or economic growth at various exponential rates of growth. The formula is 70/percentage growth rate = doubling time in years. 1. The tragedy of the commons is the degradation of renewable free-access resources. The term was coined in 1968 by biologist Garrett Hardin. Basically, the logic is that â€Å"if I don’t use it, somebody else will anyway†. On a large scale, this only leads to waste and overconsumption. 12. One solution to the tragedy of the commons is to use free-access resources at rates well below their estimated sustainable yields by reducing population, regulating access to resources, or both. Another solution is to convert free-access resources to private ownership, so investments are protected. 3. Privatization doesn’t always work if a private owner values increasing profit over protecting natural resources that they own. It is also impractical for global common resources that cannot be divided up and converted to private property. 14. An ecological footprint is the amount of biologically productive land and water needed to supply an area with resources and to absorb the wastes and pollution produced by such resource use. The countries with the largest ecological footprint are the United States, the European Union, China, India, and Japan. 5. To shift towards more sustainable consumption, China and India should lower meat consumption (specifically China), limit population growth (including increased access to birth control), and promote and fund research into sustainable living. The United States, Japan, and the European Union should also promote and fund research into sustainable living, as well as lowering oil consumption by supporting alternative energy and promoting a less consumer-centric lifestyle to their citizens. 16. Point sources of pollutants are single, identifiable sources.An example is a smokestack of a coal-burning industrial plant. Non-point sources are larger, dispersed, and often difficult to identify and therefore much harder and more expensive to control. An example is pesticides sprayed into the air or blown by the wind into the atmosphere. 17. Two basic approaches to dealing with pollution are pollution prevention (input pollution control), which reduces or eliminates the production of pollution, and pollution cleanup (output pollution control), which involves cleaning up or diluting pollutants after they have been produced. 18.Three problems with relying on pollution cleanup are that it is only a temporary bandage as long as population and consumption levels grow without corresponding improvements in pollution control technology, cleanup often removes a pollutant from one part of the environment only to cause pollution in another, and once pollutants have entered and been dispersed into the environment at harmful levels it usually costs too much or is impossible to reduce them to acceptable levels. 19. Five basic causes of environmental problems are population growth, wasteful resource use, poverty, poor environmental acc ounting, and environmental ignorance. 0. Poverty causes environmental problems because the poor often deplete forests, soils, grasslands, and wildlife for short-term survival since they don’t have the luxury of worrying about the long-term environment. They also have the most population growth. 21. Affluenza is the unsustainable addiction to overconsumption and materialism exhibited in the lifestyles of many affluent consumers in developed countries and the rising middle class in certain developing countries. It is based on the assumption that buying more things brings happiness. 22.In the United States, the air is cleaner, most rivers and lakes are cleaner, and drinking water is purer. However, this is because the waste and pollution is transferred to more distant locations. 23. The environmental impact (I) of a population on a given area depends on three key factors: the number of people (P), the average resource use per person or affluence (A), and the beneficial and harmf ul environmental effects of the technologies (T) used to provide and consume each unit of a resource and control or prevent the resulting pollution and environmental degradation. 4. Three major cultural changes have impacted the environment. The agricultural revolution allowed people to settle in villages and raise crops and domesticated animals. The industrial-medical revolution led to a shift towards urban society using fossil fuels to manufacture material items, agriculture, and transportation. It also used science to improve sanitation and understand and control disease. The information-globalization revolution is based on using new technologies for gaining rapid access to much more information on a global scale. 5. To shift to a sustainable economy, we must shift to a renewable energy-based and reuse/recycle economy with a diversified transport system. This requires restructuring the global economy to sustain civilization, a large effort to eradicate poverty, stabilize populati on, and restore hope, as well as a systematic effort to restore natural systems. 26. Your environmental worldview is a set of assumptions and values about how you think the world works and what your role in the world should be.Environmental ethics is concerned with your beliefs about what is right and wrong with how we treat the environment. 27. There are three main types of environmental worldviews. Planetary management worldview holds that nature exists to meet our needs and wants, and that we can use ingenuity and technology to manage the earth’s life-support systems with unlimited economic growth. Stewardship worldview holds that we can manage the earth for our benefit but we have an ethical responsibility to be caring and responsible managers, or stewards, of the earth.Environmental wisdom worldview holds that we are part of and totally dependent on nature and that nature exists for all species. It calls for encouraging earth-sustaining forms of economic growth. 28. Four basic components of Earth’s nature that we can mimic are reliance on solar energy, biodiversity, population control, and nutrient recycling. 29. Current emphasis needs to be shifted to how the individual matters, working together and communicating for social change, and finding trade-off solutions to environmental problems, in order to achieve sustainable emphasis.

Self-discovery in Barbara Kingsolver’s Animal Dreams Essay

Self-discovery in Barbara Kingsolver’s Animal Dreams Although, on the surface, Animal Dreams is a book about family conflict, the central theme is about self-discovery. Animal Dreams by Barbara Kingsolver is a story about a family who lived in the town of Grace. The history behind Grace is very vivid and descriptive. The family that becomes the readers concern, is the Noline family. The family members are Homero Noline and his daughters Cosima and Halimeda. Cosima or Codi, as she is known in the book, comes back to Grace after fourteen years. Halimeda or Hallie, goes to Nicaragua, to help the farmers cultivate cotton in the war- torn area. Homer, the father, is the only doctor in Grace. He has Alzheimers disease. Codi comes back to†¦show more content†¦She has a past with him that she has managed to keep hidden successfully. She was pregnant with his child and had a stillbirth. Her father knew that she was pregnant. When she had the stillbirth, her father tried to help her, and show his love by giving her the medication she ne eds without being intrusive. As he was the only doctor around, he feels that, This is the full measure of love he is qualified to dispense to his own daughter. (142; ch.13) Codi thinks that her father has always been controlling of her life. She resents her father because she feels that he alienated her from the other children in Grace, when she was going to school. She talks to her father about the mishap that occurred when she was a first-year medical resident. Codi told [tells] him that ...and I lost my nerve. You cant lose your nerve. Youre the one that taught me that. At that point, she sees a side of her father that she has never seen before. He father admits to her, I lose my nerve a dozen times a day. She realizes that the women in Grace take care of her father, and that she is ..superfluous. Codi renews her relationship with Loyd. She is not sure about telling Loyd about the pregnancy. Loyd draws her out of her shell by sharing his life and perspective. He gives her the strength by loving her just the way she is. Codi is

The Effects Of Physical Education On Schools - 1277 Words

Over many decades physical education has been a source of debate in whether it is an essential asset to a schools curriculum. With a failing economy at hand the first subjects to be eradicated are music, drama, and physical education. Dr. Dudley Sargent, a pioneer in physical education at Harvard University, suggest otherwise. In his article, Physical Training as a Compulsory Subject, Sargent argues that physical education is not only beneficial to the individual but is a great asset to a schools curriculum because only nourishing the mind and not the body is not educating an individual to their full potential. Highly populated cities, such as New York, began attracting hostility from the parents regarding the drops in the curriculum and what their children were being taught. Frustration exhibited by the parents caused the situation to be investigated. Results found that the teaching environments themselves were destructive to the student’s education. Poorly lighted rooms and improper ventilation systems in schools were common, with these environmental situations most students developed poor eye sight, poor hearing, or were too far from the teacher to understand the majority of the material being taught, resulting in reduced levels of education. After these discoveries more appropriate measures took place such as, medicinal treatment, more suitable learning environments, and special programs. Many school systems view physical education as only a means for preparingShow MoreRelatedEffects Of Physical Education On Elementary Schools Essay1969 Words   |  8 Pagesinto three sections in school. Objectives for this policy would be to increase the amount of physical activity in grades K-12. Objective one would be to increase the total number of minutes of physical activity in grade schools from 90 to 180 minutes per week. The increase in total allotted time for physical activity would constitute 36 minutes of physical activity per day. Objective two would be to increase the number of necessary physical education credits in middle school. Currently, there isRead MoreEffects Of Curriculum On Elementary School Physical Education973 Words   |  4 PagesIn Step 2 the authors stated purpose was to Determine the effects of a curriculum designed by following social constructivist learning theory on learning fitness knowledge critical to healthful living in elementary school physic al education. Specifically, we asked whether and to what extent curriculum influences elementary school students’ knowledge gain in three areas important to fitness development and healthful living: cardiorespiratory health, muscular capacity, and the principle of maintainingRead MoreThe Effects Of Physical Education On A School Environment And The Rising Health Concerns Of Our Society2420 Words   |  10 PagesThesis: There are coexisting links between physical education in a school environment and the rising health concerns of our society. This essay will highlight the importance of physical education in a schooling environment for both males and females. It will incorporate the social, cultural, economic and political contexts that illustrate the growing health problems surrounding our nation today, obesity. As there is a large concern regarding the level of physical health of Australians with a growing epidemicRead MoreCan a Lack of Physical Education Classes in High Schools Become a Future Threat to the U.S Life Expectancy?1607 Words   |  7 PagesPhysical education can go beyond just working out. Physical education involves several different approaches for learning. High school students gain more than physical knowledge yet it can improve there approaches toward responsibility, their sportsmanship, and their overall community. â€Å"Physical education hopes to accomplish, to engage all students, not just the athlete elite, in fun activities that will instill a lifelong commitment to fitness.† (Johnson, 264). Physical education in the classroomRead MoreThe Need for Physical Education in Our Culture1279 Words   |  6 PagesMost people recognize that physical education is important to stay healthy and live a balanced lifestyle. However, our culture’s focus on this truth is rapidly diminishing. Over hundreds of years ago, the ancient Greeks held physical education superior to many other things. According to Encyclopedia Americana (2014), the article about the history of physical education, states that the Greeks â€Å"strove for physical perfection and the total development of the body.† Years later, in 2008, a study doneRead MoreLasting Effects of Physical Education on Students Essay634 Words   |  3 Pagesknow this knowledge. Requiring a physical education class every year for high school graduation will benefit students throughout their lives. A major importance for having a physical education class is it keeps adolescents active. According to Cameron Jacobs, adolescents are dramatically more likely to be active outside of school if they take a physical education class. Research done by the Physical Activity Council shows children who do not have a physical education class are twice as likely to beRead MorePhysical Activity And A Child s Academic Achievement847 Words   |  4 Pages ABSTRACT It’s a well-known fact that physical activity and being healthy leads to a positive lifestyle. There have been numerous debates about the relationship between physical activity and a child’s academic achievement. In 1947 to 2009, 59 studies were used for the â€Å"comprehensive, quantitative synthesis of literature† (pg. 521) for data analysis. The results of the meta-analysis showed, a positive relationship between physical activity on student’s academics and â€Å"cognitive outcomes.† (pg.521)Read MorePhysical Education : Not Just Walking The Dog1576 Words   |  7 PagesPhysical Education: Not Just Walking the Dog A person might remember in elementary school a certified physical educator instructing the class, for example, on learning to run, balance, stretch, and climbing rope. Then, in spring, a big relay event would happen, and all the students were able to race, or show off the skills they learned through the year. At these events, every student won a prize, whether, first, second, third, or recognition of achievement for each race. Today, many peopleRead MoreThe Effect of Physical Education on Academic Achievement Essay1508 Words   |  7 Pagesthe realm of physical education is if physical education should remain in schools. Higher up’s are complaining about test scores and suggesting that cutting physical education programs would lead to better test scores. Technically, this would lead to more time spent sitting in a desk and listening to lectures in class, which is supposed to improve test scores. So, the solution to increase test scores is to take the small chance of ph ysical activity that children receive during the school day and keepRead MoreRequired Physical Education in Schools912 Words   |  4 Pagesfrom the National Association of Sports and Physical Education for Schoolchildren (Rochman). While the physical education at schools are declining in the United States because the state requirements for education are putting pressure on schools to increase the class room part and decreasing the physical education. Schools are trying to save money for the core classes math, Science, Language Arts, and History. With that lack of physical activity in schools the childhood obesity is increasing. This is