Wireless technology Essay Example | Topics and Well Written Essays - 1000 words

Wireless technology - Essay Example There is no government regulation (worldwide) controlling use of it. Infrared has immunity to electro-magnetic and RF interference. In addition, Infrared communication is secure and separate infrared installation can be operated in every room in a building without interference. Limitation of it is that infrared signals cannot penetrate solid objects and affected by the light, snow, ice, and fog. The term narrowband microwave refers to the use of a microwave radio frequency band for signal transmission, with relatively narrow bandwidth: just wide enough to accommodate the signal, typically 12.5 kHz or 25 kHz. Because of it works in very short bandwidth, therefore it comes in licensed and unlicensed categories. Unlicensed (ISM) Narrowband microwave works in three bandwidth spectrum (900 MHz, 2.4 GHz, 5.7 GHZ). It can provide a data rate from 1to 20 Mbps. Narrow bandwidth combined with high power results in larger transmission distances that are available from 900 MHz or 2.4 GHz spread spectrum systems, which have lower power levels and wider bandwidths. UHF wireless data communication systems normally transmit in the 430 to 470 MHz frequency range, with rare systems using segments of the 800 MHz range. The lower portion of this band 430-450 MHz is often referenced as unprotected (unlicensed) and 450-470 MHz is referred to as the protected (licensed) band. It has a range of ap proximately 100 meter for indoor and 1 to 2 miles for outdoor. The main advantage of UHF is its range. The disadvantage of these technologies (UHF) is its low throughput. RF license are required for protected bands that are provided by radio authorities in each country who regulate and license specific frequencies to users. (Guide to Wireless LAN Technologies) The most commonly used Wireless technology is spread spectrum that can provide a data rate up to 20 Mbps. Because the Federal Communication Commission (FCC) does not require site licensing for the bands used by

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See instruction section. There are 5 topics to choose from - Term Paper Example Obesity rates among adolescents in the United States have tripled since 1963. More than one-third (33.6%) of U.S. children and adolescents are either obese or at risk of becoming obese, with significant variations across ethnic and socioeconomic groups. Overweight children have a 70% chance of being overweight or obese as adults and an 80% chance if one or more parent is overweight or obese. Obesity increases various health related risks both in childhood and into adulthood (American Heart Association, 2005 cited in Goldberg and Gunasti, 2007).). It is estimated that at current rates, the lifetime risk of type 2 diabetes (and many related health problems) is 30% for boys and 40% for girls (McGinnis et al., 2006 cited in (Goldberg and Gunasti, 2007).). Other associated health problems for which obesity increases the risk include high cholesterol, high blood pressure, asthma, and general poor health† (Koplan et al., 2005). Needless to say, the social factors that affect the healt h of Americans breed diabetes and cardiovascular diseases. It has to be mentioned that the present economic environment of the US is far from ideal because it is still recovering from the financial crisis. Thus, both customers and organizations alike are in cost saving mode in order to cope with the current economic situation. This is however not peculiar in the health care industry because the current difficult economic situation is felt across America’s industries whether in healthcare, finance, auto etch. Policy wise, the most significant economic development in the health care industry is the implementation of the pay for performance because it can affect the bottom line and viability of a health care provider institution. â€Å"Pay-for-performance or P4P is a quality improvement strategy that employs financial incentives to improve compliance with evidence-based clinical practice guidelines, to improve patient experience, to