massive cables draped between tall towers. During construction of the anchorages‚ a large wrought iron eye-bars (steel bars with a circular hole at one end) linked together to form a chain which are embedded in the concrete. Work began in dry-docks with the assembly of doughnut-shaped cylinders of steel. At the same time the two towers‚ the highest ever built for a suspension bridge‚ were started. The cables were constructed high in the air using a process called cable spinning. To spin the cables‚ workers
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(pictures of the items she’s buying and selling). She is getting frustrated with the slow Internet access she has with her 56-Kbps dial-up modem and asks you for advice. DSL is available at a cost of $60 per month for 1.5 Mbps down and 384 Kbps up. Cable modem service is available for a cost of $50 per month for 1.5 Mbps down and 640 Kbps up. Wireless DSL is available in her apartment building for $45 per month for 1.5 Mbps down and 256 Kbps up. Explain the differences in these services and make a
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Exercise 4.1. Why are standards so important for NICs‚ connectors‚ and media? The NIC works at the physical and Data Link Layer only and does not use TCP or IP those are programs that are on your computer. Standards are put in place to make everything work good and ease. They are also developed to allow teaching. Without having standards there is chaos‚ in the computer world chaos means everyone goes back to using typewriters and mailing things through the post office. Exercise 4.1.2 The voltage
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Similarly there is a tension acting downwards TD and the weight of this portion of cable‚ W. These forces must be in equilibrium for any portion of the cable because relative to the surface of the Earth there is no vertical motion. The difference between TU and TD at any point can be expressed as dT‚ as the segment is of length dr. If we consider an element such as this
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entertainment. Comcast is the fourth largest cable company in the world. Comcast is now serving more than 21 million customers. Comcast Corporation innovatively provided millions of customers with products and entertainment around the globe. Comcast Corporation has merged with different telecommunication companies as well as other entities such as E! Entertainment television‚ QVC‚ and others channels. Comcast Corporation goal is to become the number one cable provider in world (Comcast‚ 2008). Comcast
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Chapter 3 Review of Related Literature 3.1 LOCAL STUDY A. Global Destiny Cable Destiny Cable Inc. was founded on January 1995. It embarked on marketing promotion through Solid Group Inc. by offering bundles services. On February 3‚ 1993 the name of the company was changed into Global Cable Inc. and was given a provisional authority to provide cable television services. Global Cable Inc. was allowed to operate and maintain CATV system in the municipality of San Juan and in the cities of
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Fiber optics is a cable that is quickly replacing out-dated copper wires. Fiber optics is based on a concept known as total internal reflection. It can transmit video‚ sound‚ or data in either analog or digital form . Compared to copper wires it can transmit thousands of times more data (slide 2) . Some of its general uses are telecommunications‚ computing‚ and medicine. <br> <br>The very first "fiber" was made in 1870 by the British physicist John Tyndal. In this experiment that he showed to the
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time‚ it was estimated that it cost twice as much to build and six times as much to operate a line with cable cars as with electric streetcars. By the beginning of 1906 many of San Francisco’s remaining cable cars were under the control of the United Railroads of San Francisco (URR)‚ although Cal Cable and the Geary Street Company remained independent. URR was pressing to convert many of its cable lines to overhead electric traction‚ but this was being resisted by opponents who objected to what they
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guided medium provides a physical conduit from one device to another. Twisted-pair cable‚ coaxial cable‚ and optical fiber are the most popular types of guided media. Twisted-pair cable consists of two insulated copper wires twisted together. Twisting allows each wire to have approximately the same noise environment. Twisted-pair cable is used in telephone lines for voice and data communications. * Coaxial cable has the following layers (starting from the center): a metallic rod-shaped inner
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21st Century January 22‚ 2007 Introduction The intent of this paper is to perform an analysis of the cable industry’s external environment. The first sections of the document will discuss environmental scanning and define the telecommunication niche that is currently occupied by cable operators such as Comcast. The next section will identify the macroeconomic variables that currently impact cable operators and will compare two variables to two corresponding industry variables. The final section of
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