Friday, January 24, 2020

Cellular Radio, Isdn Networks And Satellite Communications :: essays research papers

Introduction In describing Cellular Radio, ISDN (Integrated Services Digital Network) and Satellite Communications we must first have a general understanding of the meaning of these forms of Telecommunications. After a brief explanation of the different forms, they will be described in more detail. Then the present and future roles in Irish Telecommunications will be looked at and some examples given. This will then lead to the conclusion. 1. What is Cellular Radio? Cellular Radio is the use of Technology using low powered radio transmission for transmission and receiving voice or data to a telephone network. Users can be stationary or mobile. It means users are no longer constrained to place to place as it is a â€Å"wireless† system. 2. What is ISDN (Integrated Services Digital Network)? ISDN is a system which provides digital capacity i.e. voice, video and data transmission in digital form, to be sent and received by a customer. Unlike stand alone services such as telephone, telex, fax and data communications, ISDN is a network which can offer all these services as a package in which a user can talk, exchange data, faxes and other documents at the same time, instead of having to use different networks for these services. 3. What is Satellite Communications? This is the use of orbiting satellites to relay microwave transmissions from earth stations to the satellite an to re-transmit those signals back down to another earth station by means of microwave transmission. Cellular Radio At present there are two types of cellular radio systems in operation in Ireland. These are: 1. TACS This system is an analogue system in which the voice is transmitted by radio from the telephone to the nearest base station in analogue form. Analogue systems are at present throughout the world but each Country would have different standards. So a user can not use the phone in a different country, also as the signal it transmits is in analogue form the calls can be monitored quite easily with the help of a scanner. America’s version of analogue cellular radio is called AMPS (Advanced Mobile Phone System). 2. GSM (Global System for Mobiles) GSM is a more recent technical standard for cellular mobile phone systems, which was developed in Europe. It is a digital system, which voice and other sounds or data are converted to digital form before they are transmitted between the base station and the mobile phone and then converted back to analogue form. There are major advantages in using the GSM system as opposed to the TACS system:

Thursday, January 16, 2020

Changing The Constitution Assignment Essay

Write a one-page essay explaining the process for changing the Constitution. What is the difference between formal amendments and informal amendments? Why are these practices so important and how have they contributed to the Constitution’s ability to last for so long? Point value: 25 points Grading Rubric: Essay is at least one full page in length – 10 points Essay clearly and factually explains the answer to each question asked – 15 points. A â€Å"Formal amendment† is one that actually adds to or changes the US constitution. It is approved by the states and becomes law. An â€Å"informal amendment† is a change to the meaning or interpretation of the Constitution of the united states. There is no real informal way to change the constitution, and its not actual change to the wording of the constitution; rather its the way we preceive the Constitution that changes. One that comes to mind is the equal rights amendment (1972) which prohibits the inequality of men and women. Opponents say that the amendment is no longer needed, as the issues are already laws.

Wednesday, January 8, 2020

Rumor of War Book Review - 1614 Words

A Rumor of War Book Review â€Å" ye shall hear of wars and rumors of wars, see that ye be not troubled, for all these things must come to pass, but the end is not yet†¦he that shall endure unto the end, he shall be saved† Matthew 24:6 Philip Caputo’s relationship with the Vietnam War is depicted in a disturbingly beautiful way in the memoir â€Å"A Rumor of War.† Throughout the course of the book, approximately 16 months, we observe a young, ambitious boy ready to prove his manhood, in search of adventure turn into an aged disillusioned man. The words Caputo uses give the sense of involvement, the sense of being right there with the troops, seeing what they see, feeling what they feel, but really, we are never even close. Caputo has humble†¦show more content†¦Ã¢â‚¬Å"Our interpreter, a Vietnamese marine lieutenant, roughly interrogated a woman†¦his voice rose to a hysterical pitch and holding the forty-five by the barrel, he raised his arms as if to pistol whip her. I think he would have but Peterson stepped in and stopped him†¦ the old woman shuffled away, a sack of bones covered by a think layer of shriveled flesh. The Enemy.† (Pg 90). This situation is particularly important because it depicts the confusion and frustration felt by the troops in regards to the enemy which leads to their eventual breakdown. However, at this point, Caputo is only an observer; Peterson, a fellow soldier, even acts to prevent any unnecessary harm. Here is the signal of observation and isolationism. Some of the men are now aware of what is to come, but they are also strictly witnesses trying to comprehend the necessity behind the interpreters force. Understanding the tactics of the Viet Cong (VC) is crucial to analyzing the war that these marines faced. VC strategy was based on two simple concepts: blending in, and hit and run. The VC hid within the dense forests at night, and by day took on the role of peasant farmers. It was nearly impossible to distinguish between a Viet Cong guerilla, a Viet Cong supporter, and an innocent villager. An elderly lady was as much a horrific killer as a guerilla soldier completely camouflaged; a child running toward aShow MoreRelatedIn What Ways Were the Byzantine and Islamic Civilizations Different from Civilizations Developing in Western Europe? in What Ways Are They Similar?984 Words   |  4 PagesA. Student AMH2010: United States History to 1877 Professor McKeown October 1, 2012 Book Review: The Black Codes of the South Although this book is titled, â€Å"The Black Codes of the South,† the writer begins his story discussing slavery, then leads up to emancipation, where four million slaves were freed. The freedom of slaves brought about the enactment of the Black Codes in the southern states. 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