Voip Research Proposal Example | Topics and Well Written Essays - 500 words

Voip - Research Proposal Example It is used for call initiation, call teardown and other call related data sent during a VoIP conversation. SIP is a text based application level protocol. It depends majorly on other protocols such as IP and UDP for transport. VoIP implementations with SIP mostly use a SIP proxy server to which the login credentials of users are authenticated. The proxy server also routes call and signaling data. Clients can establish a communication link between each and forward SIP messages via the proxy. Communications using SIP are also used for changing call parameters or other features such as integrating more callers into a conference session. SIP registrars are used as additional servers to locate other users. VoIP technology is likely to be misused by criminals as it often does not require verification of any details to start using the service. The security of making such calls may also attract criminals, as many implementations use strong encryption to secure both the voice payload and control messages. Skype uses 256 bit AES encryption while Google Talk does not encrypt its payload (but will support encryption in the future). As an example, an organized crime ring may decide to use Skype software that allows ring members to communicate anonymously. Criminals could use laptops running Skype, create profiles like a regular user and communicate when necessary.

Citic Tower Essay Example for Free

Citic Tower Essay Stakes in firms such as Cathay Pacific, Dragonair and a string of trading and property companies * Citic Tower (Original) Property development team had gained extensive expertise and knowledge in the property business * Development began in 1995 and completed in less than two years * Despite post-Asian financial crisis, Citic Tower maintained a relatively high occupancy rate Concerns * The discounted cash flow analysis shows a negative net present value Commercial real estate market is extremely cyclical * No guarantee that Citic Tower II would be able to survive the economic downturn (perform as well as Citic Tower I has performed) Situation Larry Yung is interested in this property but hesitant due to uncertainty of future economic conditions * Member of the property development team suggested that CPL acquire rights to the land, and thus the development by offering to purchase an exclusive option from the seller * In the past land owners would not even have considered negotiating an option to purchase development sites but property developers are much more cautious after the Asian financial crisis Calculated by finding the standard deviation of return on assets proportional to time * Net option value=51 million Decision * CPL should (NOT? ) purchase the option *it seems like the price of the option is 77 million (5% equity stake) and if the option value is only 51 million then it seems like a bad idea for them to purchase the option†¦so I’m confused a little about this part still†¦maybe you guys could talk to him about this or figure it out

Iconoclasm and Iconophilia in Othello :: Othello Essays

Iconnoclasm and Iconophilia in Othello In his book War Against the Idols, Carlos Eire argues that iconoclastic resistance to the Medieval Catholic Church began with the gentle scolding of Erasmus and ended as the "shibboleth" of radical Calvinism.1 The use of images in religious instruction and practice was one of the major points of dispute between Protestant reformers and Catholic counter-reformers. Iconoclasm was certainly not confined to radical Calvinism; Anglican reformers, especially those who had spent time in continental Europe as exiles (like John Jewel, Bishop of Salisbury), quickly raised the issue in their country, which had its own unique history of religious reform. The discussions of image and idolatry in Calvin and Jewel represent particular theories of the image that derive from but also revise ancient Platonic theories of the image. Reformation iconoclasm brings up issues of ontology (who or what is God?), epistemology (by what means are we to know him? can he be represented to human senses?), and ethics (how does knowledge of God translate into moral action?). Protestant iconoclasts tend to emphasize the epistemological worth (or rather, worthlessness) of religious imagery, while the Catholic iconophiles emphasize the positive moral effects to be derived from the use of images in religious instruction. Although sparked in the 1520's and 30's, the debate between iconoclasts and iconophiles raged throughout the latter sixteenth century, well into Shakespeare's time. The iconoclastic writings of Zwingli and Calvin had a powerful legacy throughout Europe. Calvin's collected Institutes of the Christian Religion was published in 1559. Perhaps spurred by theological arguments like Calvin's, violent stripping of church imagery and other popular agitation over idolatry took place in Switzerland and elsewhere on the continent. In England, John Jewel's dialogues with Dr. Harding on the subject of imagery, drawing very much on Calvin's arguments, were published in 1565 and again in 1611. During the English Reformation, the churches and monasteries of England were also stripped of their images by some Protestant objectors. It is clear that iconoclasm was an issue not only for elite churchmen--it also captured the hearts and minds of the general population, who were the audience of Shakes peare's theater. The problem of the image is traced, by many Protestant theologians, to several major scriptural conflicts. The first important reference is God's pronouncement in Genesis: "Let us make man in our image, after our likeness" (Gen.

Myth and the World of C.S. Lewis Essay

C.S. Lewis and his series The Chronicles of Narnia have long been children’s favorites. The books envelop children into a world of good and evil, action and adventure, chivalry and honor. Lewis takes his readers on an astonishing trip that embodies his own values, dreams and beliefs. Fascinated by other myths, Lewis borrows a variety of creatures from different places, constructing an entire world that children delve into and love. From the Greek and Roman myths he takes creatures such as fauns, nymphs, and dryads, and from the Norse mythology, dwarfs and giants. His first book, The Lion, The Witch and the Wardrobe, was written soon after World War II, in 1950. He went on to write six more stories in the Chronicles of Narnia series. Many scholars have thoroughly studied Lewis’s books and great controversy has erupted from different interpretations of the symbolic meanings in his books. A devout Christian in the latter part of his life, Lewis draws parallels between the world of Narnia and the Bible. By illustrating the creation of Narnia in his first book, and establishing the laws of Narnia in a subsequent novel, C.S. Lewis creates a compelling myth around the fantasy world of Narnia. The Chronicles of Narnia begin with The Magician’s Nephew, an ingenious story of a curious young boy and his friend as they stumble upon the creation of another world, Narnia. This novel serves the purpose of the cosmological function of a myth, in which â€Å"myths describe the â€Å"shape† of the cosmos, the universe, our total world.† In The Magician’s Nephew, we first encounter the godlike lion, Aslan. The creator of Narnia, he also bestows life onto the creatures in it, booming, â€Å"Narnia, Narnia, Narnia, awake. Love. Think. Speak. Be walking trees. Be talking beasts. Be divine waters† (116). The majestic lion continues to say, â€Å"Creatures, I give you yourselves. I give to you forever this land of Narnia. I give you the woods, the fruits, the rivers. I give you the stars and I give you myself† (118). As God did in the book of Genesis, Aslan crafts the world, breathes life into â€Å"Adam† and bestows the world on him. However, in The Magician’s Nephew, there is no â€Å"Adam†. Aslan gives his world to his newly created talking beasts, a creation story with a new twist. Myths not only reveal the story of creation but also the laws by which the new society exists. In the sociological function, â€Å"myths pass down ‘the law’, the moral and ethical codes for people of that culture to follow, which help define that culture and its prevailing social structure.† The laws of Narnia become apparent in Lewis’s second book, The Lion, the Witch and the Wardrobe. In this book we learn more about the fundamental nature of Narnia, its customs and traditions. The White Witch enlightens the reader about one of Narnia’s ancient laws after capturing Edmund, one of the four central characters. She claims that Edmund’s life is hers to take: â€Å"You at least know the Magic which the Emperor put into Narnia at the very beginning. You know that every traitor belongs to me as my lawful prey and that for every treachery I have a right to kill† (128). This law has been in Narnia since the beginning of Narnia’s creation, cannot be broken and is essential to the balance between good and evil. Lewis also embeds the codes of chivalry into his novels; honor is to be won on the battlefield, and this code of honor is violated at your own peril. The codes of honor hark back to the chivalry of medieval knights and are fundamental to the culture and traditions of Narnia. The Narnia Chronicles incorporate the elements of a classic myth – the concept of creation and a set of laws to which the society should adhere. The books set out for children black and white images of good and evil, right and wrong. The values of honesty, courage, loyalty, friendship and strength of family are clearly stated. The impact of The Chronicles lies in its ability to develop an alternative, fantasy world with its strong ethics and moral code and thus influences both the readers and scores of writers who have followed in C.S. Lewis’ footsteps. The Narnia books are, and always will be timeless classics of fantasy and wonder.

Critique on Article “The Ends of Happiness” Essay

Dr Karl Giberson is a professor at Eastern Nazarene College with a PHD in Physics from Rice University. A man approaching his fifties at the writing of this article, Giberson’s solution to his mid-life crisis was to write an article â€Å"The Ends of Happiness†. His article was well written and he tries to impart his experiences with happiness to young adults. In the article, Giberson claims that happiness should be the end result of our efforts and he provides a compelling argument why we should not get caught up in our pursuit of happiness through materialistic gains. However, his arguments to back his thesis are inadequate due to an inherent contradiction in his supporting point and one unproven assumption in his article. Giberson (2006) uses the Candy Experiment with children to prove his point that our ability to withhold satisfaction leads to a â€Å"life time of happiness† (para. 5). He further explains that â€Å"unpleasant means can yield satisfying ends† (2006). This implies that our happiness will increase if we are able to set aside the things that make us happy, and work towards our goal. However, in his later argument, the author seems to imply that the happiest moments in his life, were times when he did not work towards materialistic gains. For instance, he claims he â€Å"lived well†, when he â€Å"left work early† and spent his time with his family (Giberson, 2006, para.12, 13 & 14). This illustrates his point that the most memorable moments in life comes from relationships as opposed to material gains (Giberson, 2006). While the latter argument supports his thesis, the former contradicts it by implying that happiness is something to be achieved through materialistic gains. This is shown in Giberson’s example about a student graduating with â€Å"greater earning power† (2006) and how this ability â€Å"is the formula for a lifetime of happiness† (Giberson, 2006, para. 5). Furthermore, Giberson’s argument seems to be contingent on one major assumption. That happiness gained from acquiring things, is less meaningful than happiness gained from spending time with family and friends. To illustrate his point, he cites evidence from his own memories. He states that memories gained from family time are clearer than the memories of â€Å"buying his first car† and â€Å"cashing his first paycheck† (Giberson, 2006, para.14). Giberson then applies this line of reasoning to back his thesis by showing us how happiness from material gains alone reduces our overall happiness as our social interactions decrease (Giberson, 2006). However, such opinionated evidence provides weak support to his thesis and even though he did not plan on writing a scientific article, using personal memories to validate such a major assumption weakens his argument substantially. In conclusion, Giberson has indeed written a well-structured editorial with many coherent and interesting points. However, contradicting arguments and one unsupported assumption in the article has undermined his thesis and weakened his argument. Giberson’s thesis would have fared much better had he quoted from valid sources instead of his own personal experiences. Reference Giberson, K. (2006, Mar. – Apr.). The Ends Of Happiness. Science & Spirit, 17, 6-7.

Free Essays on Community Policing

Within the inner cities and places known to certain people as â€Å"the hood,†there has always been an area of dislike when it came to law enforcement officials. The people that I grew up with and around have always had a certain level of intolerance when it came to the cop vehicles that rode the streets at night, and the officers that were seen during the day. It never mattered how much crime took place within those areas, because the trust for police officers was smaller than the trust held by the criminals within that area. My parents have often held a certain dislike for law enforcement, seeing them as a necessity for certain situations, but the overall reaction towards them has continued to be the same. Cops are simply not trusted within black neighborhoods. This topic brings about a host of questions. Why is that? What can be done? How can this lack of trust be changed, if it can be at all? And this leads me to my subject matter. Within the course of our class, we have talked about a multiple of things that had to do with management within the Criminal Justice field. We have covered everything from courts, to lawyers, to management of prisons and jails. We have looked at how things are run at local, state and federal levels and the topics that most interested me were the ones on community relations and programs. Because I do have family members, friends, and peers alike, who hold law enforcement agents in such low regard, I decided focus my paper on policing black neighborhoods and how to establish a working relationship with those within that community. Since we were to focus on something that management would be a part of I felt that this was something that needed to be researched. Looking back on the history of how things have been in some neighborhoods, it’s not difficult to understand why certain people have distrust for the system at large. Since the beginning of the whole civil rights struggle in the 60’s there has... Free Essays on Community Policing Free Essays on Community Policing The movement toward community policing has gained a lot of strength in recent years. Police and community leaders search for more effective ways to increase the extent of awareness of public safety and the quality of life in their communities. We have accepted community policing in one police department after another, and agree community policing provides hope for the future of law enforcement. We can trace community policing back to Sir Robert Peel, the father of the modern police system, who said, "the police is the public and the public are the police"(Braiden). Community policing is the philosophy of policing supported by a number of principles to find the combination of agreement and accord where people live and work. It is this philosophy that attempts to refocus the essence of policing to a â€Å"Law Enforcement philosophy that tries to do two things: first bring police officers and citizens together in neighborhoods and second give the police responsibility for solving pro blems in the community† (Wilson). Community policing involves three elements; community partnership, problem solving and police culture. This pursuit can take many forms such as preventing and reducing crime and the fear of crime. Community policing encourages residents as well as police officers to get involved in the task of making the community safer. By making this effort the community has a greater chance to resist crime, reduce fear and attain a peaceful and secure place to live together. The first element of community policing is community partnership. Police must form partnerships with the residents, the private sector and government officials. Community partnership means adopting a police perspective that is above the normal emphasis on law enforcement. This may include individuals as well as organizations or agencies that share a common goal; shares responsibility, resources, rewards and risks and includes citizens of the local community and re... Free Essays on Community Policing Within the inner cities and places known to certain people as â€Å"the hood,†there has always been an area of dislike when it came to law enforcement officials. The people that I grew up with and around have always had a certain level of intolerance when it came to the cop vehicles that rode the streets at night, and the officers that were seen during the day. It never mattered how much crime took place within those areas, because the trust for police officers was smaller than the trust held by the criminals within that area. My parents have often held a certain dislike for law enforcement, seeing them as a necessity for certain situations, but the overall reaction towards them has continued to be the same. Cops are simply not trusted within black neighborhoods. This topic brings about a host of questions. Why is that? What can be done? How can this lack of trust be changed, if it can be at all? And this leads me to my subject matter. Within the course of our class, we have talked about a multiple of things that had to do with management within the Criminal Justice field. We have covered everything from courts, to lawyers, to management of prisons and jails. We have looked at how things are run at local, state and federal levels and the topics that most interested me were the ones on community relations and programs. Because I do have family members, friends, and peers alike, who hold law enforcement agents in such low regard, I decided focus my paper on policing black neighborhoods and how to establish a working relationship with those within that community. Since we were to focus on something that management would be a part of I felt that this was something that needed to be researched. Looking back on the history of how things have been in some neighborhoods, it’s not difficult to understand why certain people have distrust for the system at large. Since the beginning of the whole civil rights struggle in the 60’s there has...

History of Papermaking From Papyrus to Dixie Cups

History of Papermaking From Papyrus to Dixie Cups The word paper is derived from the name of the reedy plant papyrus, which grows abundantly along the Nile River in Egypt. However, true paper is made of pulped cellulose fibers like wood, cotton or flax. First There Was Papyrus Papyrus is made from the sliced sections of the flower stem of the papyrus plant, pressed together and dried, and then used from writing or drawing. Papyrus appeared in Egypt around 2400 B.C. Then There Was Paper A courtier named Tsai-Lun, from Lei-yang in China, was the first recorded inventor of paper circa 105 A.D. Tsai-Lun presented paper and a papermaking process to the Chinese Emperor and that was noted in the imperial court records. There may have been papermaking in China earlier than the above date, but inventor Tsai-Lun did much for the spread of papermaking technology in China. Chinese Papermaking The ancient Chinese first made paper in the following fashion. Plant fibers such as hemp were soaked and beaten into a sludgeThe sludge was strained through a cloth sieve attached to a frame that also served as a drying platform for the resulting paper Newsprint Charles Fenerty of Halifax made the first paper from wood pulp (newsprint) in 1838. Charles Fenerty was helping a local paper mill maintain an adequate supply of rags to make paper when he succeeded in making paper from wood pulp. He neglected to patent his invention and others did patent papermaking processes based on wood fiber. Corrugated Papermaking - Cardboard In 1856, Englishmen, Healey and Allen, received a patent for the first corrugated or pleated paper. The paper was used to line mens tall hats. American, Robert Gair promptly invented the corrugated cardboard box in 1870. These were pre-cut flat pieces manufactured in bulk that opened up and folded into boxes. On December 20, 1871, Albert Jones of New York NY, patented a stronger corrugated paper (cardboard) used as a shipping material for bottles and glass lanterns. In 1874, G. Smyth built the first single sided corrugated board making machine. Also in 1874, Oliver Long improved upon the Jones patent and invented a lined corrugated cardboard. Paper Bags The first recorded historical reference to grocery paper bags was made in 1630. The use of paper sacks only really started to take off during the Industrial Revolution: between 1700 and 1800. Margaret Knight (1838-1914) was an employee in a paper bag factory when she invented a new machine part to make square bottoms for paper bags. Paper bags had been more like envelopes before. Knight can be considered the mother of the grocery bag, she founded the Eastern Paper Bag Company in 1870. On February 20, 1872, Luther Crowell also patented a machine that manufactured paper bags. Paper Plates Paper foodservice disposables products were first made at the beginning of the 20th century. The paper plate was the first single-use foodservice product invented in 1904. Dixie Cups Hugh Moore was an inventor who owned a paper cup factory, located next door to the Dixie Doll Company. The word Dixie was printed on the doll companys front door. Moore saw the word every day, which reminded him of dixies, the ten-dollar bank notes from a New Orleans bank that had the French word dix printed on the face of the bill. The bank had a great reputation in the early 1800s. Moore decided that dixies was a great name. After getting permission from his neighbor to use the name, he renamed his paper cups Dixie Cups. It should be mentioned that Moores paper cups first invented in 1908 were originally called health cups and replaced the single repeat-use metal cup that had been used with water fountains.