Wireless and Mobile Technology essays

Wireless and Mobile Technology essays Wireless and mobile technology have been around for a surprisingly remarkable duration. In 1940, a well-known actress, Hedy Lamarr, and film composer, George Antheil, discussed over dinner a scheme that would permit armed, radio-controlled torpedoes the ability to travel undetected by jamming enemy transmissions. They would patent the invention in 1942 that would later form the basis for what would be known as spread-spectrum communications. Their invention becomes even more incredible when it is taken into consideration that it came before the advent of digital electronics. Now, over 60 years later, spread-spectrum communications has been adapted to today's electronics to allow for an inexpensive way to communicate over long distances, wirelessly. Development of wireless radio technology, through spread-spectrum communication, was a decelerated process throughout the early 1940's when the United States Navy decided to buy into the technology but then decided not to use it and kept it a secret. It was not until the late 1940's that the concept of a cellular phone came to light. A company, which would later be known a Motorola, created a lightweight handheld two-way radio for the United States Army during World War II. After the war, in 1946, AT It wasn't until 1973 when Martin Cooper, an employee with Motorola, used the first handheld cellular phone to contact rival, Bell Labs. In 1970, a professor with the University of Hawaii built up...

Correcting Run-On Sentences Proofreading Practice

Correcting Run-On Sentences Proofreading Practice This exercise will give you practice in identifying and correcting run-on sentences. Before attempting the exercise, you may find it helpful to review how to  correct a run-on sentence with a period or semicolon  and  correcting run-ons through coordination and subordination. The following paragraph contains three run-on sentences (fused sentences and/or comma splices). Read the paragraph aloud and mark any run-on sentences that you find. Then correct each run-on according to the method you think is most effective. When you have completed the exercise, compare your corrections with the following paragraph below it. Run-On Sentence Exercise Why I Had to Get Rid of the Monster Although I am a dog-lover by nature, I recently had to give away my three-month-old retriever, Plato. I had several good reasons for doing so. A few months ago I picked up the dog at the Humane Society as a Christmas gift for my girlfriend. Alas, she dumped me on Christmas Eve I was left to console myself by caring for the dog. Thats when my true misery began. For one thing, Plato was not housebroken. Throughout the apartment he left little mementos, staining rugs and furniture and fouling the air, he would burrow under any newspapers I laid down for him. To make matters worse, his untamed potty habits were supported by an insatiable appetite. Not content with a sack of Kibbles n Bits every day, he would also gnaw at the couch and shred clothes, sheets, and blankets, one night he chewed up a friends new pair of clogs. Finally, Plato simply wasnt happy being cooped up by himself in a small apartment. Whenever I left, he would begin whimpering, and that soon turned into furious barking . As a result, my neighbors were threatening to murder both me and the monster, as they took to calling him. So, after six weeks of life with Plato, I gave him away to my uncle in Baxley. Fortunately, Uncle Jerry is quite accustomed to animal feed, waste, noise, and destruction. Corrected Version of Run-On Sentence Paragraph Below is the corrected version of the paragraph used in the exercise above. Why I Had to Get Rid of the Monster Although I am a dog-lover by nature, I recently had to give away my three-month-old retriever, Plato. I had several good reasons for doing so. A few months ago I picked up the dog at the Humane Society as a Christmas gift for my girlfriend.  Alas, when she dumped me on Christmas Eve, I was left to console myself by caring for the dog.  Thats when my true misery began. For one thing, Plato was not housebroken.  Throughout the apartment he left little mementos, staining rugs and furniture and fouling the air. He would burrow under any newspapers I laid down for him.  To make matters worse, his untamed potty habits were supported by an insatiable appetite.  Not content with a sack of Kibbles n Bits every day, he would also gnaw at the couch and shred clothes, sheets, and blankets. One night he chewed up a friends new pair of clogs.  Finally, Plato simply wasnt happy being cooped up by himself in a small apartment. Whenever I left, he would begin whimpering, and that soon tur ned into furious barking. As a result, my neighbors were threatening to murder both me and the monster, as they took to calling him. So, after six weeks of life with Plato, I gave him away to my uncle in Baxley. Fortunately, Uncle Jerry is quite accustomed to animal feed, waste, noise, and destruction.

Analyze the passage Essay Example | Topics and Well Written Essays - 250 words - 2

Analyze the passage - Essay Example If we regard our action first from the point of subjective inclination and then from the perspective of conformity to reason, we do not find a contradiction; we are led to realize the validity of the categorical imperative. The writer concludes that if duty has to be a practical and unconditional necessity of action and account for the legislative authority it can only be expressed in terms of categorical imperatives. If there is any such thing as an a priori notion of duty which is absolute, it must cover the willing and inclination of all human beings. They should conform to reason. Such duty is intrinsic and sublime and its validity gets diminished if it is dictated by subjective inclinations or natural dispositions. The reasons that the writer gives do support his point to a great extent. The writer’s views are important because everyone has certain duties and obligations in life. Our duties must conform to reason and we should not be liberal and compromising regarding our personal

Bank law Essay Example | Topics and Well Written Essays - 1500 words

Bank law - Essay Example It has not derived any benefit from the sale of the said Nursing home for it was applied to payment of credit debts, and even the other creditors were not given any amount. Narni was dependent on this kind of arrangement because the Bank has been honoring the checques drawn over the limit and has not notify it for the dishonor. 2. The Court found that indeed the Bank committed breach of its arrangement with Narni. As deduced from the facts of the case, the acts of the bank in allowing and honoring the cheques drawn way beyond the ceiling despite the fact that there was no sufficient fund in the account of Narni constitutes an implied terms. As gleaned from the records of the case, Narni applied for overdraft facility with the Bank with ceiling of $65, 000 and when it has drawn cheques pending approval of the said application, the Bank honored the cheques even if the account was regularly in debit. When Narni asked for extension of the overdraft to $100, 000.00, the Bank continuously manifested its refusal to grant it, but continued to honor the cheques drawn beyond the limit. This kind of dealings between the Bank and Narni gave rise to implied terms, which the bank is bound. And Narni relied upon this dealing of the Bank that the latter will not refuse to honor the check without giving adequate notice. ... The following the terms are implied as a matter of fact: a). as a result of a course of past dealings between the parties; 2). as a result of custom or trade usage; and 3). to give business efficacy to the contract (Topic 6, n.d.). And for the Court to regard the implied terms as result of past dealing between the parties it must be shown that a). the terms of the collateral contract must not be inconsistent with the terms of the main the term claimed to have been used in past dealings is clearly identifiable. This is most easily done by reference to previous contractual documents; b). The previous dealings were sufficiently frequent and consistent, given the circumstances of the case, to constitute a regular course of dealing; c).the present dealing fits into that course of dealing to the extent that it can reasonably be said that the same terms should be included; d). and there is no conflict between the implied term and the express terms (Ibid.). As regards the situation between N arni and the Bank, the Court correctly held that there was an implied terms between them as a result of past dealing and course of action between them. It has ruled that "that by honouring cheques at a time when the account was well in excess of $100,000 the Bank impliedly extended the overdraft facility to â€Å"a limit of at least $100,000† and further agreed not to dishonour a cheque drawn â€Å"within the limit† without first giving adequate notice." The silence of the Bank regarding the status of the cheques drawn despite lack of funds and the previous dealings it had with Narni wherein it honors the cheques are factors relied by Narni in the conduct of

X-ray transient Essay Example for Free

X-ray transient Essay The good news is that there are more binaries which reveal the possibility of a black hole, that which is much stronger than in Cygnus X-1 (Lochner, 2006, p. 2). In the year 1975, an X-ray transient known as A0620-00 was discovered. In the mid-80s, it was found that the mass of this object was more than 3. 5 solar masses. This fact alone eradicates the possibility of a neuron star, since neuron stars usually possess solar masses of 1. 5. In fact, the discovery of A0620-00 may have put into question the feasibility of other theories. Nonetheless, the best finding regarding black holes is V404 Cygni. This star was found to have an estimated 10 solar masses. Several journals have also written about the existence of black holes. In the 1995 edition of Annual Reviews of Astronomy and Astrophysics,there was a review conducted by Kormendy and Richstone, which implied the eight galaxies were thought to have â€Å"massive dark objects in their centers (Bunn, 1995, p. 1). † These cores were found to have masses which range from 1 million to several billion times that of the sun. Their massiveness was determined by noting how â€Å"the speed with which stars and gas orbit around the center of the galaxy: the faster the orbital speeds, the stronger the gravitational force required to hold the stars and gas in their orbits (Bunn, 1995, p. 1). † In fact, this is how astronomy usually measures masses. There are two reasons why these massive galactic centers were deemed as black holes. To begin with, the centers are â€Å"too dense and dark (Bunn, 1995, p. 1)† to even be considered as a group of stars, or just merely stars. â€Å"Second, the only promising theory to explain the enigmatic objects known as quasars and active galaxies postulates that such galaxies have supermassive black holes at their cores (Bunn, 1995, p. 1). † Even though these reasons point out that the galactic centers are really black holes, there is no sufficient evidence to prove it. Nonetheless, there is a continuous discovery for proofs that systems do include black holes. According to Bunn (1995), â€Å"a nearby active galaxy was found to have a water maser system (a very powerful source of microwave radiation) near its nucleus. Using the technique of very-long-baseline interferometry, a group of researchers was able to map the velocity distribution of the gas with very fine resolution (p. 1). † They also determined that the velocity was â€Å"less than half a light-year of the center of the galaxy (Bunn, 1995, p. 1). † It is from this fact that they deemed the object as a black hole, simply because only a black hole can have that much mass concentrated in such a small volume (Bunn, 1995, p. 1). All these results are included in January 12, 1995 issue of Nature, vol. 373. , as was reported by Miyoshi et al (Bunn, 1995, p.1). Is there a possibility that the Sun can be a black hole? No. According to Bunn (1995), â€Å"only stars that weigh considerably more than the Sun end their lives as black holes (p. 1). † For about five billion years, the Sun will remain in its present state. After that, the Sun will undergo a phase wherein it will be a red giant star. The Sun will then end its life as a white dwarf star. If there are black holes, are there white ones? According to Bunn (1995), â€Å"the equations of general relativity have an interesting mathematical property: they are symmetric in time. That means that you can take any solution to the equations and imagine that time flows backwards rather than forwards, and youll get another valid solution to the equations. If you apply this rule to the solution that describes black holes, you get an object known as a white hole (p. 1). † If a black hole then pulls objects in, a white hole would then push things out. The former sucks in, the latter spits out. However, there is no proof that white holes exist, and there are no studies to point out if their existence is a possibility. There has also been speculations about the existence of what is called worm holes. What is a worm hole? It is â€Å"a theoretical opening in space-time that one could use to travel to far away places very quickly (Lochner, 2006, p. 2). † It is characterized by â€Å"two copies of the black hole geometry connected by a throat the throat, or passageway, is called an Einstein-Rosen bridge (Lochner, 2006, p. 2). † As is indicated in the definition, it is merely theoretical. There is no scientific basis nor experimental evidence for such existence. However, it is indeed amazing to think that such existence is possible. Do black holes disappear or evaporate? Even astronomers are not sure as to how black holes end their existence. Bunn (1995) notes that â€Å"Back in the 1970s, Stephen Hawking came up with theoretical arguments showing that black holes are not really entirely black: due to quantum-mechanical effects, they emit radiation. The energy that produces the radiation comes from the mass of the black hole. Consequently, the black hole gradually shrinks. It turns out that the rate of radiation increases as the mass decreases, so the black hole continues to radiate more and more intensely and to shrink more and more rapidly until it presumably vanishes entirely (p. 1)† This is a mere theory. There have been no proof or scientific conclusions as to how black holes really diminish. Black holes are just one of the many things included in the vast universe we are a part of. Thanks to science and the technological advancements at present, we can have greater awareness and knowledge of what is within our universe but beyond our reach. References Bunn, T. (1995). Black Hole FAQ List. Retrieved December 13, 2007, from http://cosmology. berkeley. edu/Education/BHfaq. html. Lochner, J. (2007). Black Holes. Retrieved December 13, 2007, from http://imagine. gsfc. nasa. gov/docs/science/know_l2/black_holes. html.

The Controversial Theme of A Dolls House by Henrik Ibsen Essay

The Controversial Theme of A Doll's House      Ã‚  Ã‚  In his play, A Doll's House, Henrik Ibsen depicts a female protagonist, Nora Helmer, who dares to defy her husband and forsake her "duty" as a wife and mother to seek out her individuality. A Doll's House challenges the patriarchal view held by most people at the time that a woman's place was in the home. Many women could relate to Nora's situation. Like Nora, they felt trapped by their husbands and their fathers; however, they believed that the rules of society prevented them from stepping out of the shadows of men. Through this play, Ibsen stresses the importance of women's individuality. A Doll's House combines realistic characters, fascinating imagery, explicit stage directions, and an influential setting to develop a controversial theme. The characters of this play help to support Ibsen's opinions. Nora's initial characteristics are that of a bubbly, child-like wife who is strictly dependent on her husband. This subordinate role from which Nora progresses emphasizes the need for change in society's view of women. For Nora, her inferior, doll-like nature is a facade for a deeper passion for individuality that begins to surface during the play and eventually fully emerges in the ending. An example of this deep yearning for independence is shown when Nora tells her friend, Kristina Linde about earning her own money by doing copying. Nora explains, "it was tremendous fun sitting [in her room] working and earning money. It was almost like being a man" (A Doll's House, 162). Mrs. Linde is an inspiration to Nora, because Kristina has experienced the independence that Nora longs for. Even though Nora seeks to be independent, she uses her role of subordination to her advant... ...ntroversial theme. Ibsen expresses to the audience his hope for the "miracle" of true equality, when neither men nor women abuse the power that society gives them. When Nora sheds her doll's dress and steps out into the real world, she opens up a new realm of possibilities for all women. Works Cited and Consulted: Agress, Lynne. The Feminine Irony: Women on Women in Early-Nineteenth-Century English Literature. London: Associated UP, 1978. Durbach, Errol. A Doll's House: Ibsen's Myth of Transformation. Boston: Twayne, 1991. Ibsen, Henrik. A League of Youth/ A Doll's House/ The Lady From the Sea. Trans. Peter Watts. England: Clays Ltd., 1965. Salomà ©, Lou. Ibsen's Heroines. Ed. and trans. Siegfried Mandel. Redding Ridge: Black Swan, 1985. Templeton, Joan. "The Doll House Backlash: Criticism, Feminism, and Ibsen." PMLA (January 1989): 28-40.    The Controversial Theme of A Doll's House by Henrik Ibsen Essay The Controversial Theme of A Doll's House      Ã‚  Ã‚  In his play, A Doll's House, Henrik Ibsen depicts a female protagonist, Nora Helmer, who dares to defy her husband and forsake her "duty" as a wife and mother to seek out her individuality. A Doll's House challenges the patriarchal view held by most people at the time that a woman's place was in the home. Many women could relate to Nora's situation. Like Nora, they felt trapped by their husbands and their fathers; however, they believed that the rules of society prevented them from stepping out of the shadows of men. Through this play, Ibsen stresses the importance of women's individuality. A Doll's House combines realistic characters, fascinating imagery, explicit stage directions, and an influential setting to develop a controversial theme. The characters of this play help to support Ibsen's opinions. Nora's initial characteristics are that of a bubbly, child-like wife who is strictly dependent on her husband. This subordinate role from which Nora progresses emphasizes the need for change in society's view of women. For Nora, her inferior, doll-like nature is a facade for a deeper passion for individuality that begins to surface during the play and eventually fully emerges in the ending. An example of this deep yearning for independence is shown when Nora tells her friend, Kristina Linde about earning her own money by doing copying. Nora explains, "it was tremendous fun sitting [in her room] working and earning money. It was almost like being a man" (A Doll's House, 162). Mrs. Linde is an inspiration to Nora, because Kristina has experienced the independence that Nora longs for. Even though Nora seeks to be independent, she uses her role of subordination to her advant... ...ntroversial theme. Ibsen expresses to the audience his hope for the "miracle" of true equality, when neither men nor women abuse the power that society gives them. When Nora sheds her doll's dress and steps out into the real world, she opens up a new realm of possibilities for all women. Works Cited and Consulted: Agress, Lynne. The Feminine Irony: Women on Women in Early-Nineteenth-Century English Literature. London: Associated UP, 1978. Durbach, Errol. A Doll's House: Ibsen's Myth of Transformation. Boston: Twayne, 1991. Ibsen, Henrik. A League of Youth/ A Doll's House/ The Lady From the Sea. Trans. Peter Watts. England: Clays Ltd., 1965. Salomà ©, Lou. Ibsen's Heroines. Ed. and trans. Siegfried Mandel. Redding Ridge: Black Swan, 1985. Templeton, Joan. "The Doll House Backlash: Criticism, Feminism, and Ibsen." PMLA (January 1989): 28-40.   

Who Has Impacted Your Life the Most

There are certain people, when we asked them about who impact your life's, they usually mentioned their parents. However, my parents gave me the gift of life. They taught me how to talk and walk. They are always here for me when I need something. I cannot live without their advice. My parents are perfect examples of gave me the chance to have good education and better life. First, my father is my guidance with everything I had done. I cannot waived his advise to me. I always find him in the position where I need him. For example, my decision of studying in the United State or studying in Saudi Arabia.He encourage me to go to the United State because as professor working in the university. He told me that teaching in America better for you. Even thought he is teaching on university in Saudi Arabia. Moreover, he gave me the chance to choose whether I want to study in Saudi Arabia or America. Lastly, I chose to study in the U. S, and he was with me for the lest monument of supporting me and giving me advice until I arrived to the U. S. Second, my mother is the best mother in the world because she gave the impassible thing that no body can give me, is the gift of live.She always help me with whatever I need. She never forces me to do anything that I do not like to do. She wanted for me to have the best education in my entire life. She also supported me and gave me advice to my trip to the U. S. I remember she told me that â€Å"nobody was born to know† because I was afraid of learning English. And who will be the life with different culture. In this situation, she said to me you are going to harmony with other people there and do not be afraid, the life is easy.