Research part 2 Paper Example | Topics and Well Written Essays - 1250 words

Part 2 - Research Paper Example On the other hand, wireless communication involves conversion of data into electromagnetic waves for transmission and it is converted back to its original form as it gets to the receiver. There has been a debate on the most superior communication medium between fiber optic cable and wireless communication. Various technological gadgets such as Blackberries and Smart phones are designed to connect to wireless mode of data transfer. This mode has also enabled stores, business enterprises and other organizations to provide free access to the internet without hooking wire to every computer or laptop. However, as Wright and Reynders, (42) explains, some wireless services do not work in some cities. This leads to the preference for the fiber optic cables which are also believed to higher maximum speeds especially when networks become congested. In most parts of the world, communication systems are increasingly adopting the use of both wireless and fiber optic cable transmissions. This rese arch paper will examine the similarities and differences between these modes of data transmission in order to determine how well or not each suits specific situations. In wireless communications, a radio channel may be used; however, it is susceptible to noise interference (Varaiya 315). These interferences include blockage and multi paths which change over time due to user movements. This affects the range, data rate and reliability of wireless links. Hence, the biggest challenge with wireless communication is that an environment is a factor in transmission. For instance, an indoor user may experience higher data rates which is reliable than an outside user who is exposed to certain environmental conditions like water vapor and oxygen. Tall building and other atmospheric absorption between the transmitting and receiving antennas may also affect wireless transmission. Wireless systems use atmosphere as their transmission medium which is enabled through radio signals. The received si gnal may also experience interference from other users in the same frequency band. Other components like path loss determine how the average received signal power decreases with distance between transmitter and receiver. Wireless medium is also prone to signal attenuation resulting from obstruction from trees and other tall objects. Wide area wireless data services provide low to high data rate services. This depends on the coverage of a few base stations mounted on towers, rooftops which are transmitting at high power to enable signal transmission and delivery from the sender to the intended receiver (Subramanian, Timothy and Rani 81). This is enabled by a link that carries data between two physical systems. Wireless transmission purely relies on transmitters, receivers, base stations or any medium depending on the technology that relays the IP data across the network. Currently, wireless networks can handle limited speed due to various factors involved in during transmission. Radi o signals running on frequencies up to 2 GHz other wireless networks can support 70 Mbps data speed. In addition, in wireless networks, transmission is via three or more routes, one of it being a line of sight transmission. Transmission is impaired by free space loss where wireless communication signal disperses with distance. Wireless networks utilize code division multiple access where several

Bits of Mystery DNA Article Example | Topics and Well Written Essays - 750 words

Bits of Mystery DNA - Article Example (Kolata) What is also critical to understand that this article has actually focused on the findings which were earlier termed as junk? Scientists have discarded these findings and apparently reduce their role in offering any new insights. However, different research findings indicated in this article has put the onus back on scientists to actually re-evaluate their own opinions and embark on new research. The article has also discussed the 3 dimensional structure of DNA and how this new discovery can actually pose new challenges for scientists to properly encode and decode those DNAs to achieve the health related benefits. This paper will discuss the new research which has been discussed in this article and will specifically focus on discussing dark matter as well as the 3-D structure of DNA. Besides, this paper will also discuss the impact this new research on DNA might have on overall health related outcomes. Biological dark matter actually hints at the fourth domain of the life i.e. bacetria, archea and eukaryotes the other three. It has been now accepted throughout the academic field that most of the genetic material in different parts of the body is the dark matter with relatively no explanation of what it actually is. Historically DNA Dark Matter has been termed as junk DNA because it was not coded for protein and researchers typically knew little about this dark matter. This junk or dark matter resides in millions of switches that is possessed by the smaller bits of DNA. However, new research clearly now indicates that these smaller switches or the dark matter as it is called can play decisive role in determining how different organs and tissues work and how two persons with identical genetic make-up can catch different diseases. DNA is a double Helix and unwinding of the same would actually result into two different strands and both of them are parallel in