Time Consumption for Key establishment is one of the important constraints of Wireless Sensor Network. In basic schemes it is depends on the number of factors like, the number of a node neighbours N$_{nb}$, the key ring size\emph{ m}, and the key pool size \emph{P} because of shared key discovery phase and path key establishment phase .Time consumption for key establishment T$_{E}$ in E-G scheme is expressed as follow:\\ \emph{T$_{E}$= max(T$_{Ei}$) \hspace{5mm} i=1,2,...,N\\ T$_{Ei}$ $\propto$
Words: 627 - Pages: 3
When people talk about technology they may think in computers and those advance things we have in this century, but what people used to know about technology and how they communicate in the pass is amaze. With little resources to work, people in the early centuries used their imagination to create amazing machines in order to deliver messages from people to people. One of the biggest creation during the early- to -mid- 20th century were the enigma machines. A well-design machine used to protect
Words: 544 - Pages: 3
Germany Risk Analysis MGT/448 Smita Poddar December 15, 2014 Germany Risk Analysis Germany is the selected target country for DIRECTV’s latest expansion. The German economy, political structure, regulatory, financial, cultural, and competitive landscape requires an objective analysis to determine the appropriate strategy and plan for market introduction. Other parts of the assessment include taxation, marketing mix, distribution options, supply chain, and environmental factors. Political
Words: 2646 - Pages: 11
The four different types of wireless technologies to be discussed are cellular, satellite, Radio Frequency Identification, and Wireless Fidelity. Cellular communications are rapidly changing as more wireless applications are realized. The potential for cellular use has transcended mere phone communication use as developers delve into other cellular applications. Cellular technology works on the premise of radio communications through lower power base stations known as cells (Brain, Tyson, &
Words: 582 - Pages: 3
subscribers. People love TV content, but they don't love the linear TV experience, where channels present programs only at particular times on non-portable screens with complicated remote controls. Linear TV was a huge advance in entertainment over radio, just as fixed-line telephone was an advance in communications over the telegraph. Now Internet TV - which is on-demand, personalized, and available on any screen - is maturing and will eventually replace the linear TV experience. The world's leading
Words: 2224 - Pages: 9
to develop it. Many people have their definition, theory or misconceptions of what they think Wireless Communications is. Also, many people think that there is a major difference between Radio Communications and Wireless Communications. Contraire to popular belief, there is defiantly no difference between Radio Communications and Wireless Communications except the spelling. Wireless internet is what comes to mind when at the mention of Wireless Communications. To simplify the definition,
Words: 3255 - Pages: 14
There is no hope of doing perfect research (Griffiths, 1998, p97). Research aims at investigating something, someone, or any given information that requires getting conclusion on the findings (McLaughlin 34). It involves establishing facts, collecting information and analyzing it before reaching a conclusion. Research on a certain topic, for example, can never be enough since every day, scientist come up with new inventions and findings. Different people can go out doing research and their conclusions
Words: 643 - Pages: 3
many talk for more than an hour a day. Cell phone antennas are similar to microwave ovens. While both rely on electromagnetic radiation, the radio waves in cell phones are lower in radio frequency (RF). Microwave ovens have enough RF to cook food and are therefore known to be dangerous to human tissues. However, the concern is that the lower frequency radio waves that cell phones rely on may also be dangerous. It seems logical that holding a heat source near your brain for a long period of time is
Words: 467 - Pages: 2
Mass Media Omar Orozco Hum 186 April 27, 2012 Mass Media Mass Media incorporates all those mediums through which information is distributed to the masses. These include advertisements, magazines, newspapers, radio, television, and the Internet. Advertisements are intended to attract its audience into thinking they can't live without the product or service being presented to them. They prey upon our weaknesses and insecurities, and they use our desires and needs to seduce us. A good advertisement
Words: 769 - Pages: 4
All research points out to the impact on the human immune and nervous systems, complications in reproductive health as well as behavioural problems in children. He emphasised that all epidemiological studies point out to adverse impact of mobile radio especially on children, pregnant women and on male fertility. radiation has two effects-thermal and non-thermal. The present safety norms are based on thermal effects, ignoring non-thermal effects which are three to four times more dangerous. Non-thermal
Words: 285 - Pages: 2
