World Hunger

3 Steps to Acing Your Upcoming Group Interview You’ve been approached in for a board meet. Perhaps you’re threatened. Perhaps frightened. Possibly you’re not even sure you comprehend what that really involves. Whatever your degree of fear, here are three simple strides to traversing your board meet tranquilly and in one piece. Stage 1: BEFOREYou reserve the privilege to ask who will be on your board. Do this. At that point inquire about each board part as well as could be expected. You’ll have the option to make sense of a considerable amount and get ready better for what each may be generally quick to ask you. What does this specific gathering of individuals educate you regarding what the organization is attempting to assess?You can likewise ask to what extent (generally) the meeting should last. This will give you a nice sentiment for what amount to and fro conversation will be conceivable, how much space you’ll be given to pose inquiries, to what extent your answers can be, etc.Step 2: DURING Treat every individual on the board like an individual not simply one more anonymous face. This isn't an indifferent divider asking you inquiries. Every questioner on your board is another chance to make a human association and persuade that a lot more individuals in the organization what an extraordinary fit you would be.Be sure to observe everybody’s name as they are presented. Record every one if that causes you recall. When responding to questions, talk straightforwardly to the person who asked, yet then attempt to widen your answer out to cause the remainder of the board to feel remembered for the discussion.Step 3: AFTERYou’ve took in their names and put forth an attempt to interface with each board part presently thank every single one of them earnestly withâ solid eye to eye connection and a quality handshake. From that point forward, it’s the typical post-meet follow-up methodology. Be that as it may, recall that you have to keep in touch with one card to say thanks for each board part. It appears to be a torment, however it’s these little contacts that will help set you apart.The board talk with: 6 hints for previously, during, and after

Liability for an Employees Assaults Case Study Example | Topics and Well Written Essays - 2500 words

Risk for an Employees Assaults - Case Study Example The conversation that follows clarifies why. Vicarious risk is a legitimate idea allocating obligation to a business for the carelessness or denied lead of a representative acting over the span of his obligations at work. On the off chance that the direct is not the slightest bit associated with the work the business won't be held at risk. There are a few explanations behind the teaching of vicarious risk and Michael A. Jones offers maybe the best outline. Jones clarifies that vicarious obligation can be legitimized on the accompanying grounds: (1) The ace has the 'most profound pockets'. The abundance of a respondent, or the way that he approaches assets through protection, has sometimes had an oblivious impact on the advancement of lawful standards. The courts have built up and built up a three level test so as to decide if the tortfeasor is a worker and his manager is vicariously subject for the lead of their representative. The three level tests are: the control test2, the basic test3and the various test.4 The control test is fulfilled if the worker is heavily influenced by the business. For example if the business can fire the worker for neglecting to complete the business' directions, the representative is heavily influenced by the business. ... prone to be viewed as a worker and if the business is at freedom to enlist the representative and to fire his administrations he will no doubt be esteemed a representative inside the setting of the control test.5 Margaret Simpson ought to have no trouble building up the control test to have Tom regarded a worker of AFS. He himself expressed that he was just carrying out his responsibility. Moreover in endeavoring to legitimize his direct he expressed that he was reacting to remarks about his horrible showing made by his director Sarah Harper. This announcement is an appearance of the control Tom's managers had over the way wherein he played out his obligations. There were additionally past discussions about occupation misfortunes and execution targets which would propose that Tom was a representative heavily influenced by AFS. By temperance of the essential test, if the representative structures a fundamental piece of the business and isn't just coincidental to the business then he will be esteemed an employee.6 Tom Barnes is utilized at AFS' base camp in the situation of item deals official. AFS as a money related administrations business and selling its items can not at all be seen as just accidental to the accomplishment of the business. Consequently it is reasonable for expect that Tom Barnes, an item deals official is an indispensable piece of the business. The different test is an amalgamation of the control and essential tests. In Ready Mix Concrete (South East) Ltd v Minister of Pensions (1968) 2 QB 497 it was held that the different test is fulfilled and a worker is supposed to be under an agreement of administration on the off chance that he is paid for his administrations, is under the influence either explicitly or verifiably of his boss and if there are different terms and conditions intelligent with a business contract.7 On the realities of the case for

Personal Narrative Essay of Bring Mother to School - Tips For Parents

Personal Narrative Essay of Bring Mother to School - Tips For ParentsPersonal Narrative Essay of Bring Mother to School is a learning tool intended for parents, grandparents, teachers and school counselors. The work of this book can be used as a guide for families in providing support for an older child who is struggling with bad behavior. The book will help you and your child deal with the situations that may arise.If you are going to document home reading time and have a homework aid, this may be the right resource for you. It provides guidelines and suggestions on how to structure your own homework when you have a child who needs your help. Parents should not be concerned about learning tips for homework because your child knows how to accomplish his or her work.One useful part of the book is the notes section where parents and teachers can input their own ideas into the sample guide. This allows for an even more personalized experience for the guide. The tutorial involves reading several stories from old and new literature, citing their information as well as how the stories were created. The examples illustrate why you need to read all of the literature before you make your decision about the kind of reading material that you will use for your child.A must have for parents, educators and teachers is the interactive aspect of the book. For parents it will provide helpful suggestions and help make sure that your child always has an acceptable level of behavior and understand the importance of following rules. Teachers and school counselors can use the book to help them keep track of the progress of the students. It is always difficult to stay up to date on the classroom dynamics of students.When you have a child who is showing signs of aggression, rest assured that there is a personal narrative essay to bring mother samples that can help with appropriate behavior. Most parents will agree that there are several steps that need to be taken before a child can b e considered mature enough to make responsible decisions regarding the behaviors that they exhibit. There are many lessons that can be learned from reading the guide.The supplement to the manual also contains maps and pictures that can be used to guide the reader through the different locations in a parent's home. Other materials include a toolbox containing strategies for parents and teachers as well as resources for a variety of topics that may come up in the classroom. Lastly, the book contains tips for children to act appropriately in class.Personal Narrative Essay of Bring Mother to School is a resource to help you and your child manage the situation when a child is having trouble adjusting to the home life. Whether you want to update or customize the guide for your child, the book provides quality instruction.

Tragic Heroes in Greek Myth - 2055 Words

Tragic Greek dramas featured tragic heroes, mortals who suffered incredible †¨losses as a result of an inescapable fate or bad decisions. According to Aristotle, a tragic hero is a character, usually of high birth, which is pre-eminently great, meaning they are not perfect, and whose downfall is brought about†¨ by a tragic weakness or error in judgment. The three Greek heroes Oedipus, Medea and Agamemnon, who each killed a member of their family, carry most of the qualities that make up a tragic hero: being of noble birth, being surrounded by an extraordinary circumstance, and gaining self-awareness or some kind of knowledge through their downfall. There is an important need for the audience to identify with the Aristotelian hero through†¦show more content†¦Euripides also carefully reveals the elements of Medeas past that demonstrate her readiness to violate solidarity of family ties in order to pursue her intractable will; Jason and Medeas original tryst, for exa mple, required that she kill her own brother, thus choosing marriage ties over blood ties. Secondly, Medeas selfishness provides power to her fatal flaw. Medeas selfishness and lack of humanity is displayed through the act of killing her own two sons. Medea understands that the slaying of her children will make Jason miserable. During this time, the chorus recognizes her self-worship and states, â€Å"But can you have the heart to kill your flesh and blood† (Euripides, The Medea, 816)? Medea does not stop to think what pain she may cause to herself by murdering them. She is only concerned about her happiness that will be derived from Jasons grieving. Medea comes to the conclusion that it is worth the suffering just to see her ex-husband unhappy. Medea states, â€Å"Yes, for this is the best way to wound my husband† (Euripides, The Medea, 817). This exhibits Medeas selfishness by the slaying of her sons just to cause sorrow to Jason for her own pleasure. Medeas rage als o leads to her fatal flaw of excessive passion. Her excessive passion, fed by rage, leads Medea to do uncalled-for acts of violence and murder. In the opening stages of the Agamemnon the chorus describes Agamemnon as a great and courageous warrior, one whoShow MoreRelatedGreek Mythology : Greek And Roman Mythology885 Words   |  4 PagesMyths symbolize human experience and embody the spiritual values of a culture. (Rosenberg) With Greek and Roman Mythology we learn or are introduced to the idea of how the universe is formed, we learn about love and of course we learn about tragedy. Greek and Roman mythology has a strong influence on our culture today. The Greek culture affects our everyday way of life. They created democracy, the alphabet, libraries, the Olympics, math, science, architecture, and even lighthouses. (Unknown) GreekRead MoreThe Heros Journey1704 Words   |  7 PagesContrasting Heroes Joseph Campbell was an American psychologist and mythological researcher. In his lifelong research, Campbell discovered many common patterns running through hero myths and stories from around the world. Years of research lead Campbell to discover several basic stages that almost every hero-quest goes through (no matter what culture the myth is a part of). He calls this common structure â€Å"the monomyth† (Hero’s Journey). The â€Å"hero’s journey† appears in drama, storytelling, myth, religiousRead MoreAristotle s The Tragic Hero1561 Words   |  7 Pagesclaims four requirements for the tragic hero. The hero must be good. The hero must have appropriate quality of his or her gender and class. The hero must be true to life. Lastly, the hero must be consistent. These four characteristics are present in many tragic heroes. However, there are so many different authors with different interpretations of the tragic hero, that to define the tragic hero wit h merely four traits is not plausible. Aristotle defines the tragic hero in a way too simple manner.Read MoreSophocles Oedipus Rex: The Epic and Tragic Hero in Myth and Culture2021 Words   |  8 PagesOutline- Background to story and structure Thesis the hero as both epic and tragic Oedipus Rex Theme and Plot The Epic and Tragic Hero in Myth and Culture How myth is ingrained, purpose Oedipus as a tragic Hero Formation of myth and commonalities with the everyman Aristotelian definition of hero Conclusions How Aristotles definition fits Oedipus Background- Within the rubric of the human experience we can find a number of commonalities that relate to psychology, culture, and the mannerRead MoreThe Libation Bearers and Hamlet1308 Words   |  6 PagesThe Libation Bearers and Hamlet Many of Shakespeare’s plays draw from classical Greek themes, plot and metaphors. The tragedies of Sophocles, Aeschylus, Euripides and Homer have themes like royal murders, assassinations by near relatives, the supernatural, ghostly visits, and vengeful spirits of the dead- themes which reappear in Shakespeare’s tragedies with a difference. Shakespeare’s tragic hero Hamlet and Aeschylus’s Orestes have a great deal in common. Both the plays are set in a time when theRead MoreThe Libation Bearers and Hamlet1302 Words   |  6 PagesThe Libation Bearers and Hamlet Many of Shakespeare’s plays draw from classical Greek themes, plot and metaphors. The tragedies of Sophocles, Aeschylus, Euripides and Homer have themes like royal murders, assassinations by near relatives, the supernatural, ghostly visits, and vengeful spirits of the dead- themes which reappear in Shakespeare’s tragedies with a difference. Shakespeare’s tragic hero Hamlet and Aeschylus’s Orestes have a great deal in common. Both the plays are set in a time whenRead MoreOdysseus as a Tragic Hero2449 Words   |  10 PagesNearly every story in Greek mythology revolves around a character with a certain outstanding attribute, be it strength, intellect, or even musical talent. Heroes such as this might spend their lives questing for kleos, or the myth might simply be a tale in which the hero was trying to accomplish a certain task, such as returning home or rescuing a lover from Hades. In every case, these heroic tales would always end with tragedy; the hero would be killed by a jealous lover, go mad, or have a lovedRead More Oedipus the King: A Tragic Hero Essay2117 Words   |  9 Pagesher, to experience devastating losses. While tragic instances can be avoided, there are other instances where one’s fate and future is out of the protagonist’s control. In Oedipus the King, written by Sophoc les and first performed around 249 BC, Oedipus cannot escape his destiny and even though he tries to overcome and circumvent prophecy, he finds out that supernatural forces will get what they want in the end. Oedipus meets the criteria of a tragic hero set forth by Aristotle and his fate withinRead MoreOedipus the King: The Tragic Flaws of Oedipus Essay852 Words   |  4 PagesOedipus was so determined to save Thebes from the plague bestowed on them by Apollo. But little did he know that he was the source of it all. His constant reversal of fortune, neutrality, and suffering make him the perfect example of a classic Greek tragic hero. One moment, Oedipus is brimming with hope; the next, he’s sure that he is the killer of his father, King Laius. Every time Oedipus thinks that it can’t possibly be him, evidence proves otherwise. His wife, Jocasta, attempts to prove hisRead MoreCreon, the Tragic Hero Essay1663 Words   |  7 PagesAntigone, an argument of who is the tragic hero between Antigone and Creon exists. I firmly believe Creon is the tragic hero of the play. Creon becomes the typical fallen hero in Greek drama. He faces many conflicts, internally and externally, and undergoes quite a bit of painful emotions. One might say Antigone should receive the title of being the tragic hero, but Creon plays a more significant role by learning his lesson the hard way and ending up as the classic tragic hero who loses everything at the

Americanisation in Australia Essays - 1106 Words

Last time I checked the name of our country was not Ausmerica! So why are we slowly letting America make us the 51st state of the USA? The American media and imports have caused Australian culture to become submerged in the generic cosmopolitanism of the US! Good morning/afternoon Ms Bui and class today I will be speaking to you about the Americanisation of Australias language and culture through music, film and television. The national spread of American media including; TV, film and music has been the cornerstone of Americanisation in Australia since 1945, the end of world war two. Britains Farm and Americas Junior Partner: that is what Australia was labelled as, around the end World War II. Prior to WWII it is argued Australia†¦show more content†¦And when was the last time you heard about Delta? The latest of the two I do believe was Chris brown and when you think about it delta has not been in the news or magazines or anything for a while now. This leads me to products and how product placement is also americanising us. I mean we see famous people drinking Starbucks coffee and junk food from MacDonalds and burger king on TV so we want to drink coffee from Starbucks and buy from burger king?well at least we call it hungry jacks?we changed something. The point is places like MacDonalds, Hungry Jacks, KFC, and Red Rooster are all imported shops from America even products we thought were owned and operated and all by Australia arent I mean take?vegemite for example purely Australian? I dont think so, it is owned and operated by the Americans even all the ingredients are imported there is now not one thing that is Australian about vegemite! Many a time Australia copies America willingly for e.g. how many of us played with Barbies when we were younger? Im sure not to many of us would have even played with beanie kids instead. And trick or treating?! It is fast becoming popular here. Seriously how long will it be till were celebrating thanksgiving and July 4th It is becoming a disgrace; we are already too much like America! Everyone knows everything about USA! Mention George Washington and we all know he was the first president of the US, but mention Edmund BartonShow MoreRelated Americanization of the Australian Media Essay1228 Words   |  5 PagesAmericanization of the Australian Media The Australian television and media have become americanised through the influence of American media and television programs in Australia. This research will only concentrate on the extent of Americanisation in Australia through the influence on television and the film industry as the aspect of Americanisation covers a wide range from fashion to language. To fully understand the topic of the hypothesis, proper exploration of the definitions of ‘identity’ and ‘culture’Read MoreBritish American Influence on Australia1015 Words   |  5 PagesBefore 1945, many people, including Australians themselves, considered Australia to be nothing more than a British colony whose national identity was virtually the same as the British. During this period of Australias history, our modes of entertainment, food, fashion, sporting culture and our social values and attitudes were largely dictated by British culture. One of the most significant changes to have taken place in Australian society since the end of WWII, has been its drift towards AmericanRead More americanisation of australian television Essay1019 Words   |  5 Pagesasked if they were shocked by the revelation that all the most popular dramas and comedies on Australian television were made in America, and whether they thought TV stations should be forced to show more stories from other countries, including Australia. Carolina Peters talks about her concerns over this issue, she quotes, â€Å"I am not at all shocked that so much of the drivel on our TV screen comes from the US. I am, however, deeply concerned that so much of our programming is either direct from orRead MoreMonsoon Wedding Essay1041 Words   |  5 PagesWhereas, Dubey insists on having the tent in white, the American fashion. This scene verifies how India applies different cultural symbolism in selecting colours compared with other cultures. In addition, this also provides evidence showing that Americanisation is gradually influencing India’s modern perspective and culture. Symbology Furthermore, Symbology also plays an important role in representing the India’s cultural aspects. The Marigold flower is one of the significant symbols in â€Å"MonsoonRead MoreAustralian English and National Identity984 Words   |  4 PagesWhat does Australian English look and sound like today, and how does it reflect our identity as a nation? Language use in Australia constantly and rapidly changes to reflect the ever-evolving Australian national identity. It is being influenced by American culture, through its pervasive media, and altered to create a unique identity that addresses the needs of the younger Australians. Technology, the loss and gain of expressions, changing perception of taboo words and political correctness alsoRead MoreThe Era Of New And Improved Cultural Identity1488 Words   |  6 Pagesa real possibility. The threat of Communism came into play, splitting the Labor party and bringing in the ANZUS treaty to combat that. In addition to that, Australia got involved in the Korean War in fear of Communism tearing our government apart. Girls donned short skirts and boys donned army greens, it was the decade of change in Australia and still affects our governmental decisions today. Retrospect investigates this era of change in depth in this editorial. Entertainment for every AustralianRead MoreRupert Murdoch and a Dramatic Change in the Television Industry1331 Words   |  6 Pagestelevision channels. Rupert Murdoch owns one of the largest media organisations in the world, called News International. This is an organisation which owns products in all mediums. Press baron, Murdoch started his ownership of print in Australia when he inherited his first newspaper from his father, the Adelaide News, he made what was a fairly unsuccessful newspaper into a thriving business. After taking over the Mirror in Sydney, in the 1970s Murdoch came to the UK and purchasedRead MoreModern History Conflict in Indochina1803 Words   |  8 Pagespopularity as President that influenced his announcement not to stand for re-election. Nixon won in late 1968 on a platform of â€Å"peace with honor†, evidence that US support had been severely damaged by Tet. Nixon changed the policy of war from â€Å"Americanisation† to â€Å"Vietnamisation†, where the US would withdraw but continue to supply ARVN supplies, aid and training. However, Nixon simultaneously commences operation Menu as part of his â€Å"madman theory† to bomb the North. Nixon also initiated a policy toRead MoreAustralian Films - Screening Responces3687 Words   |  15 Pageschange. The inability to adapt to frequent changes within society is what may have defined Australia as a nation, and led to the creation of a different national identity from its roots, of British colonization. Alas, during these political changes, Australia was a great conservative and Catholic nation, that believed in the dominance of white culture; Evident in their policies such as The White Australia policy and the policy of Assimilation. The use of real news footage reinforces the pre-existingRead MoreIndia Closed Economy3117 Words   |  13 Pagesmany nations as possible. Relationships solely with either East or West did not serve India s national interest. With the establishment of the NAM, India did not have to face the ideological battles with the West, as presented by the threat of Americanisation of culture, 1 2 3 4 DFAT Submission, p. S 721. Thakur, R. India in the World: Neither Rich, Powerful nor Principled in Foreign Affairs v.76 (4), July 1997, p. 15. DFAT Submission, op. cit. ibid. 3 nor did it have to rely solely

Reflection Report for Cyber Security on Delta - myassignmenthelp

Question: Write about theReflection Report for Cyber Security on Delta Insurance. Answer: Reflection report Evaluate the effectiveness and your usefulness of the learning experience This research proposal was effective for me to develop my knowledge and skills. It is also useful for generate understanding about the Impact of Cyber Security on Delta Insurance of Bangladesh. From the introduction chapter, I have learned that Bangladesh is becoming a vulnerable nation in terms of cyberspace. Since, cyber-attacks may create possibilities of loss of asset with high extent (Williams, 2015).Along with this, it can be evaluated that a large number of cyber attacks has been arisen in the financial corporation in Bangladesh such as Bangladesh bank faced a heist in 2013 that causes big financial loss (Vasigh, et. al, 2014). This learning experience was beneficial for me to make strategy within delta insurance. Since, this company expected to invest high amount on measures of cybersecurity in the upcoming years. Explain how this learning process will be useful to you I will implement these learning experiences within the company to deal with cybersecurity. It can be explained that business tends to avoid periodically and any kind of uncertainty assessment to execute the security policy due to different causes. These are inadequate time, shortage of fund, and incapability to provide the high extent of awareness regarding information security as well as training and education (Warf, 2016). Describe objectively what happened in the learning process This business research was useful for me to develop research and technical skills. Through this research, I have learned that both primary and secondary question is made by a researcher to respond the answer through research. I have also developed my understanding regarding potential hypothesis which is created to assess the two different variables i.e. dependent and independent variable. As a result, I am competent to become a good technical manager as I have high knowledge regarding cybersecurity. Evaluate what you learn I have considered different activities to complete the research objectives such as I have used research design and methodology to complete the research in a methodological way. This learning experience would be valuable for me to make further research in future. Through this research, it is analyzed that a large amount of information will be quantitative as it will aid to determine the impact of cybercrimes on business in Bangladesh (Crandall, et. al., 2013).I have also pointed that data which are collected through the research will help to identify the level of risk related to cyber attacks and its impact on the business process. Consequently, I can use this data gathering process to make further research associated with cybersecurity issue. For this research, it is analyzed that main primary data will be gathered through a questionnaire in which researcher will mainly emphasize on Delta insurance company (Entrekin, and Scott-Ladd, 2013). As, now, I am competent to use survey throug h a questionnaire. I have also developed my understanding regarding questionnaire. In this way, it can be evaluated that a large number of the questionnaire will be provided to IT department of a corporation. It is also analyzed that Ms-excel and SPSS will be used to analyze the data (Faruk and Rahaman, 2015). This learning was also valuable for me to develop my technical skills as I am able to use different software for conducting the research. This skill is effective for me to assess the reliability and validity of research outcome. From the finding regarding the security of delta system, I have assessed that there was an enhancement in business cybersecurity and the attacks were becoming fewer due to strict security measure for defending the system. This experience was beneficial for me to suggest the delta insurance company to invest in cybersecurity. As a result, I can grow my personal as well as professional life in future. Explain your learning process From the finding of data, I have pointed that use of BYOD has a major risk to secure the data of corporation because there is inadequate control over information which is accessed through such devises. Along with this, I have gained my knowledge through respondent responses. In this way, it can be evaluated that management of delta insurance was working hard to take full control of the circumstances which have covered a large part of the financial institution in Bangladesh (Lindsay, 2015). This learning is significant for me to make further research on delta insurance company as I can enhance my professional career. In addition, I have developed my knowledge regarding commitment of firm to security measures. In this way, it is analyzed that information risk management approach is used to assess issues which may affect the safety of its customers information (Dunn Cavelty, 2013). As a result, I am competent to implement the information risk administration strategy at the workplace which could foster my professional life. From the discussion chapter, I have gained my experience that a large number of a financial institution facing cyber attacks however delta insurance has to move in faster for developing better security action to secure its system. As a result, I will use this experience to encourage the stakeholders for investing a large amount in cyber security of Delta Company. Through the survey, I have observed that large numbers of workforces are happy and confident regarding the measures of the company. This learning experience was effective for me to decline and avoid cyber-attacks. It is also analyzed that when a team member has a favorable attitude regarding efforts which are made by a corporation to decline cyber-attack then it may improve the firms goodwill and customers will be willing to invest in the corporation (Gordon, et. al., 2015). As a result, this learning experience can be effective to become a good technical manager in the future. Explain Plan how this learning you will applied Through this research, I have learned that company should make a strict measure for using the BYOD as they pose a key challenge to the security of the system. Consequently, I am able to make a strict action for exercising BYOD. Besides this, I have developed an understanding regarding research limitations. In this way, it is observed that fewer IT firms can be able to give an interview (Wang, and Lu, 2013). Another limitation that was pointed me is that there are only a few participants who able to understand the straightforward question. This learning experience was beneficial for me to focus on the research limitation during research as it can enhance the quality of research outcome. References Crandall, W. R., Parnell, J. A., and Spillan, J. E. (2013)Crisis management: Leading in the new strategic landscape. USA: Sage Publications. Dunn Cavelty, M. (2013) From cyber-bombs to political fallout: Threat representations with an impact in the cyber-security discourse.International Studies Review,15(1), pp. 105-122. Entrekin, L., and Scott-Ladd, B. D. (2013)Human resource management and change: a practicing manager's guide. UK: Routledge. Faruk, O., and Rahaman, A. (2015) Measuring Efficiency of Conventional Life Insurance Companies in Bangladesh and Takaful Life Insurance Companies in Malaysia: A Non-Parametric Approach,Management Studies and Economic Systems,2(2), pp. 129-144. Gordon, L. A., Loeb, M. P., Lucyshyn, W., and Zhou, L. (2015) The impact of information sharing on cybersecurity underinvestment: a real options perspective,Journal of Accounting and Public Policy,34(5), pp. 509-519. Lindsay, J. R. (2015) The impact of China on cybersecurity: fiction and friction,International Security,39(3), pp. 7-47. Vasigh, B., Fleming, K., and Humphreys, B. (2014)Foundations of airline finance: Methodology and practice. UK: Routledge. Wang, W., and Lu, Z. (2013) Cybersecurity in the Smart Grid: Survey and challenges,Computer Networks,57(5), pp. 1344-1371. Warf, B. (2016)E-Government in Asia: Origins, Politics, Impacts, Geographies. USA: Chandos Publishing. Williams, B. M. (2015)An Administrative Compendium on Trends for Identifying Adequate Blood Donation by African Americans: A Collection of Literary Research Procedure Papers. UK: Xlibris Corporation.

Supernovas Essays - Star Types, Exotic Matter, Stellar Evolution

Supernovas A supernova is a STAR that explodes. It suddenly increases in brightness by a factor of many billions, and within a few weeks it slowly fades. In terms of the human lifespan, such explosions are rare occurrences. In our Milky Way galaxy, for example, a supernova may be observed every few hundred years. Three such explosions are recorded in history: in 1054, in 1572, and in 1604. The CRAB NEBULA consists of material ejected by the supernova of 1054. Such materials, known as supernova remnants, are common in the heavens. The supernovas observed in modern times have all occurred in other galaxies, the most distant yet having been detected in 1988 in a galaxy 5 billion light-years away. The most interesting supernova of recent times was detected in the relatively nearby Large MAGELLANIC CLOUD, on Feb. 23, 1987, by an astronomer at Chile's Las Campanas Observatory. It quickly became an object of intense study by all the means available to modern astronomy. A supernova may radiate more energy in a few days than the Sun does in 100 million years, and the energy expended in ejecting material is much greater even than this. In many cases, including the Crab nebula supernova, the stellar remnant left behind after the explosion is a NEUTRON STAR--a star only a few kilometers in diameter having an enormously large density and consisting mainly of neutrons--or a PULSAR, a pulsating neutron star. There are two common types of supernovas, called type I and type II. Type I occurs among old stars of small mass, whereas type II occurs among very young stars of large mass. It is not known how a small-mass star can release the very large amounts of energy needed to explain type I supernovas. Scientists generally believe that this must involve binary systems--two stars revolving around each other. In such a system one of the stars is a WHITE DWARF, a small, dense star that is near the end of its nuclear burning phase. After attracting matter from the companion star for some time, the white dwarf eventually collapses with a great rush, becoming a neutron star, and ejecting matter outward. This rebound of matter is thought to be the supernova. Stars with large masses burn their nuclear fuel very rapidly. Within a million years or less, such stars build cores containing much iron. When the iron eventually burns, energy is quickly drained from the core, and the star cannot continue to support itself against gravity. It suffers a mighty collapse analogous to that of a type I supernova, and the rebound causes matter to be ejected in a type II supernova explosion. Stars ending in this way are typically red SUPERGIANTS, but the one that exploded as 1987A was a blue star, named Sanduleak, with a mass only about 15 times that of the Sun. Its pattern of brightening and fading also varied notably from that of typical type II supernovas, and an as yet unexplained mystery spot appeared some time after the explosion, apparently near to Sanduleak's former location. In 1989 astronomers thought that they had detected an extremely fast-spinning pulsar at that location, but much further data is still needed before this finding is confirmed. Cosmologists estimate that the Universe came into existence about 15 billion years ago. This involved the initial creation of hydrogen and helium. Since then nuclear fusion in stars has changed some of the original hydrogen and helium into heavier elements (see STELLAR EVOLUTION). Supernovas have played an important role both in producing the heavy elements and in ejecting material back into space, where it has been used to make new stars and, probably, PLANETARY SYSTEMS. It is possible that one or more supernovas exploded shortly before the formation of our solar system. Elements ejected from these explosions could have mixed with the solar nebula, eventually becoming part of the structures of the Sun, the Earth, and all living things. Bibliography : Clark, D. W., and Stephenson, F. R., eds., Historical Supernovae (1977); Jastrow, Robert, and Thompson, Malcolm, Astronomy (1984); Marschall, Laurence A., The Supernova Story (1988); Murdin, Paul and Leslie, Supernovae (1985); Shy, Frank, The Physical Universe (1982); Woosley, Stan, and Weaver, Tom, The Great Supernova of 1987, Scientific American, August 1989; Zeilik, Michael, and Gaustad, John, Astronomy (1983).