established since 2003. In the US the regulator is Federal Communications Commission and has been established since 1934. These regulators govern what frequency band companies can purchase to provide a wireless mobile service to customers. The term spread spectrum is used in data communications and is a technique in which the transmitted signal is distributed over a wide frequency band, much wider than the minimum bandwidth required to transfer the information. The signal distributing is accomplished by
sequence, spread spectrum multiple access technique, there are certain other hybrid combinations that provide the advantage in the area of cellular mobile communication system. The available wideband spectrum is divided in to a number of subspectras with smaller bandwidth. Frequency Hopped Multiple Access Technique (FHMAT) consists of a direct sequence modulated signal whose center frequency is made to hop periodically in a pseudorandom fashion. In this paper we provide a Hybrid Spread Spectrum Techniques
Nails · Voltmeter · Plastic Beakers · Electronic Balance Hypothesis: I expect the strongest electromagnet to have a 'soft' iron core; the highest number of coils (45); the strongest voltage (10V) and current and have the coils evenly spread across the iron rod. The 'soft' iron core means it changes easily between being magnetised and de-magnetised, it is perfect for electromagnets, which need to be turned on and off. From a previous experiment, using an electromagnet, I found out
The Medieval Crusades: Launched to Spread Worship of Dionysus Although it is a popular notion that the crusades of the Eleventh through Thirteenth Century Europe were launched to spread Christianity, it is a seldom realized fact that they were actually launched to spread the worship of the Greek God Dionysus. While many fundamentalist radicals and even some historians who ought to know better will dispute this,it is,nevertheless,true. During the Middle Ages in Europe,there were a series
Spread of Christianity Among People Groups From the very beginning times of Christianity, its message has identified with and transformed communities of people. Christianity itself grew out of a people group who had an identity that stretches back in time thousands of years. The worship of Yahweh, geographically born in ancient Mesopotamia (modern day Iraq) has spread through history to the farthest islands of the seas. Born into the people of Israel, Jesus gathered a small group of followers
The Inevitable Spread of Soviet-backed Communism in Eastern Europe At the end of World War II, the Soviet Union, Great Britain and the United States were principle players involved with reshaping post-war Europe. The region most affected policy changes was Eastern Europe, which includes those states that would eventually fall behind the Iron Curtain. While the camaraderie between the Big Three deteriorated, Soviet-backed communism was spreading across Eastern Europe. The argument during this
Played On, discusses the origin of the AIDS virus and how it spontaneously spread across the world. It used the Ebola disease to foreshadow the forth coming of another serious disease. The world was not prepared to handle such a contagious plague. Doctors around the world assumed that the first cases of the HIV virus to be just an abnormality of a certain disease, their carelessness of this matter was the start to the spread of this disease. Throughout this movie, it illustrates different points, such
Humans have used the different methods of transportation since this time for a number of reasons (i.e. survival in the case of the hunter-gatherer, to spread religion, or in order to search for precious minerals and spices). What few of these human travelers failed to realize is that often diseases were migrating with them. This essay will look at the spread of the disease smallpox. In the following I hope to reveal the history of smallpox as well as why it devastated the New World. In order to understand
Reggae As Social Change:The Spread of Rastafarianism Throughout its existence, Jamaica has experienced numerous revolutions, riots, and various forms of social unrest. From early resistance by escaped slaves to all-out fighting to end slavery altogether, not to mention riots in past years, Jamaica has been in a constant state of resistance. All these efforts to make a change have created a Jamaican religion called Rastafarianism, and with it comes a very powerful means of transporting its message:
The Spread of Disease In the New World The extraordinary good health of the natives prior to the coming of the Europeans would become a key ingredient in their disastrous undoing. The greatest cause of disease in America was epidemic diseases imported from Europe. Epidemic diseases killed with added virulence in the " virgin soil" populations of the Americas. The great plague that arose in the Old World never emerged on their own among the western hemisphere and did not spread across oceans
Why the Textile Workers in the South Spread so Quickly The textile industry was, at one time, one of the largest industries in the south. Starting in the late 1800’s with small local looms, and spreading to become corporations who controled the south and whose influence stretched internationally. One of the first textile industries came to Gaston County North Carolina, and its huge success led to the opening of mills across the Carolina’s and Virginia. As these industries grew they began to
What makes a rumor spread so fast and keep spreading? A rumor is information or a story that is passed from person to person but has not been proven to be true (Rumor). There have been many studies on why rumors spread. Rumors can be spread in ways such as person to person, and virtually. The reason why rumors are spread is a broader topic. Researchers believe that a great deal of rumors spread because of anxiety and fear. There are also ways to prevent rumors. Rumors are very powerful if not stopped
The Spread of Islam and the Slave Trade “Segu is a garden where cunning grows. Segu is built on treachery. Speak of Segu outside Segu, but do not speak of Segu in Segu” (Conde 3). These are the symbolic opening words to the novel Segu by Maryse Conde. The kingdom of Segu in the eighteenth and nineteenth century represents the rise and fall of many kingdoms in the pre-colonial Africa. Therefore, Segu indirectly represents the enduring struggles, triumphs, and defeats of people who are of African
James Baldwin’s Critique of the Social Condition James Baldwin was an African American writer who, through his own personal experiences and life, addressed issues such as race, sexuality, and the American identity. “Notes of a Native Son” is one of many essays that Baldwin wrote during his lifetime. Within this essay, Baldwin talks about when his father died and the events that revolved around it. His father’s death occurs in the early 1940s, where oppression and racism were still fairly prevalent
primarily on religious beliefs. Islam teaches that Allah, the Muslim god, requires that a good Muslim pray a ritual prayer five times per day, give a token of their income to charity, and if possible a pilgrimage to Mecca, their Holy City (“The Rise and Spread of Islam…”). “Muhammad himself was hostile to the Jews” (Rivkin 25) because he believed Allah to be the one true God and saw the Jewish Doctrine of the Trinity to be polytheistic. The Jews, however, rejected all divine worship except their own. Also
Analysis of the Spectrum of Depression Depression has many degrees of severity from a passing feeling to a serious illness, which destroys lives and relationships. Major depressive disorder is the most severe form of depression. It is extreme and persistent, rendering the patient inconsolable and helpless (1). Depressed patients often cannot continue working and have difficulty dealing with family and friends. Other symptoms of major depression are deep despair, misery, irritability, low self-esteem
personal camera’s, both have and use lens to focus on images. The eyes respond to the visible spectrum, this spectrum is made up of wavelengths of different sizes. The shorter waves produce a purple color, while Longer wavelengths produce blue, yellow, green and orange, and the longest Waves are red. Saturation, brightness, and hue all are components used in the Visible spectrum. More than half of the sensory receptors in the body happen to be located in the eyes, also the
The Absorption Spectrum of Chlorophyll Water + carbon dioxide → glucose + oxygen 6H2O + 6CO2 → C6H12O6 + 6O2 Absorption Spectrum An absorption spectrum shows which wavelength of light a molecule absorbs. Action Spectrum An action spectrum shows the effect of each wavelength of light on the rate of photosynthesis The absorption spectrum of chlorophyll is very similar to the action spectrum of photosynthesis. This is evidence that chlorophyll absorbs light for photosynthesis
In Jihad vs. McWorld, Benjamin Barber puts forth two opposing extremes of ideology, Jihad and McWorld. Jihad consists of religious fundamentalists trying to force their views onto all others. On the other end of the spectrum is McWorld based on capitalistic principals. Each of these ideologies challenge the way of democracy. In their differences they are similar. McWorld tries to sell products; Jihad tries to sell their beliefs and ideas. Part 1 of Jihad vs. McWorld introduces McWorld, its
The task of interpreting William T. Vollmann’s works seems as monumental for the reader as writing the story oneself. The text of “The Visible Spectrum”, in fact, does not feature any extensively challenging vocabulary or particularly thwarting subject matter; yet it would seem that in all of its “objectivity” and “transparency”, there lies no obvious, dominant or intended interpretation. The narrative is ambiguous in its “message” to an infinite degree, and thus the reader must construct its “meaning”