Features of bluetooth technology Essay Example for Free

Features of bluetooth technology Essay The logo for Bluetooth is based on Runes surrounding the legend of Harald Bluetooth. Bluetooth the technology is based on communications central to man’s own personal space. Fundamentally Bluetooth operates within the Industrial, Scientific and Medical (ISM) band at 2. 4 GHz. It is a short-range wireless communication standard defined as cable replacement for a Personal Area Network (PAN) (see â€Å"Bluetooth†. Grolier Encyclopedia of Knowledge, pp. 87-94). Figure 1 is the Bluetooth Logo. A cable replacement standard has been defined because cables limit mobility of the consumer; they are cumbersome to carry around, are easily lost or broken. Often connectors are prone to difficult to diagnose failures; or are proprietary. To counteract these limitations Bluetooth is designed to be light and portable. It can be embedded to take the riggers of physical knocks and shocks. It includes standards and protocols to make it mobile, robust, reliable and not limited to one manufacturer (see â€Å"Bluetooth†. Grolier Encyclopedia of Knowledge, pp. 87-94). The operating band also fits the goals of Bluetooth, imposing requirements as a cable replacement. The cost needs to be comparable with cable. Reductions can be achieved by operating in the licence free 2. 4 GHz ISM band, keeping backward compatibility wherever possible lowers the cost of ownership by avoiding upgrades and having a relaxed radio specification enables single chip integrated circuit solutions. It also needs to be as reliable and resilient as cable and cope with errors and degradation caused by interference. For mobile devices it must be compact, lightweight, low power and easy to use (see â€Å"Bluetooth†. Grolier Encyclopedia of Knowledge, pp. 87-94). A. 1 Frequency Hopping We have addressed the reasons for the Bluetooth without delving into the ‘nuts and bolts’ of the technology to discover how it operates. For the majority of countries the ISM band used by Bluetooth is available from 2. 40-2. 4835 GHz, although some countries impose restrictions. In this band Bluetooth uses Frequency Hopping Spread Spectrum (FHSS) techniques in order to improve its immunity from interference (see J. Bray and C. F. Sturman, Bluetooth: Connect Without Cables†, Prentice Hall). In unrestricted countries the radios hop in pseudo random sequences around all available channels, this equates to 79 RF channels with a channel spacing of 1 MHz. Starting at a base frequency of 2402 MHz then the frequency of the channels, f, can be expressed as: f =2402 + n MHz where, n, is the channel number with an integer value in the range of 0 to 78. In restricted countries a limited frequency hopping schemes with just 23 channels is used and is catered for in the Bluetooth specification. Both hopping schemes have a 1 MHz channel spacing making it possible to design a simple radio interface whereby the baseband only has to specify a channel number and the radio multiplies this up to the appropriate frequency offset (see J. Bray and C. F. Sturman, Bluetooth: Connect Without Cables†, Prentice Hall). In this FHSS scheme there are 1600 hops per second, which is a hop every 625  µs. Part of this hop timing is taken up by the guard time of 220  µs allowing the synthesizer time to settle. The frequency hopping implements time division multiplexing as shown in Figure 2. The basis of the scheme has the Master device transmitting in the first 625 us slot, k, and here the Slave receives. In the next slot k = 1 the Slave is permitted to transmit and the master listens (see J.Bray and C. F. Sturman, Bluetooth: Connect Without Cables†, Prentice Hall). Figure 2: Frequency Hopping, master and slave interact on corresponding slots The radio must be able to retune and stabilise on a new frequency within tight time constraints. This is pushed further when establishing a connection; the hop rate can be shortened to every 312. 5 us. As the radios are constantly hopping to different radio channels, this ensures that packets affected by interference on one channel can be retransmitted on a different frequency channel. To further enhance resilience both ARQ (Automatic Repeat reQuest) and FEC (Forward Error Correction) form part of the specification (see J. Bray and C. F. Sturman, Bluetooth: Connect Without Cables†, Prentice Hall). One drawback with the normal hop sequence is the time taken for production testing. Bluetooth ensures adequate frequency coverage with a test sequence allowing the radios to be tested at a faster rate (see J. Bray and C. F. Sturman, Bluetooth: Connect Without Cables†, Prentice Hall).

The Creation Of The Constitution :: The Constitution

In creating the Constitution, the states had several different reactions, including a rather defensive reaction, but also an understanding reaction. As a document that provided the laws of the land and the rights of its people. It directs its attention to the many problems in this country; it offered quite a challenge because the document lent itself to several views and interpretations, depending upon the individual reading it. It is clear that the founders’ perspectives as white, wealthy or elite class, American citizens would play a role in the creation and implementation of The Constitution. On further analysis, most of the issues within the document were due to vast cultural, racial, and economic lifestyles that our country did and will continue to support, as unintentional as it may be. This document lessened some of those issues and attempted to accommodate the requests of all states. However, Elitist framers manipulated the idea of a constitution in order to protect their economic interests and the interests of their fellow white land and slave owning men' by restricting the voices of women, slaves, indentured servants and others. The Constitution that was created had a strong central government and weaker state governments. Under the Constitution, Congress was given the power to levy taxes, regulate trade between the states, raise an army, control interstate commerce, and more. A three-branch government was established in which a judicial branch handled disputes in a federal court system, a President headed an executive branch, and a legislative branch. Conversely, the anti-federalists believed in weak central and strong state governments, as the way it was in The Articles of Confederation and believed in strict adherence to the writings of the constitution. Furthermore, the creation of The Constitution caused much debate between the elite and democratic states because they thought that if the Government got all of the power, they would lose their rights. The conflict between the North and South played a major role in the development of this document. The North felt that representation in Congress should be based on the number of total people and South felt that it should be based on number of whites. However, The Three Fifths Compromise settled this when it was said a slave will count as 3/5 of a free person of representatives and taxation. Article one section two of the Constitution defines how the population will be counted, obviously there was a strong opposition to this by Southern states like Virginia because their economy was based on slave labor and they had a bigger population because of it.

Health Care Communication Methods Essay

Every day in the health care field, professional have to choose the most effective communication method when communicating to other professionals, patients, patient families, and the general public. Different circumstances have very specific methods of communication that need to be utilized for communication to be effective. Furthermore, in the health care field the regulations of HIPAA have to be considered to ensure that certain information is being protected as well as identity of people pertaining to the health scenarios. Further will be discussed the methods of communicating in the health care field, the advantages and disadvantages of using traditional, electronic, and social media for health care communicating, and the effects of HIPAA and other regulations on the use of media in the health care field of communicating. Communication coordinators of any health care field have to decide often which methods of communication he or she would have to utilize and the rules and regulations that govern those methods. In one scenario, a communication coordinator that works for a national drug manufacturer has received report that there has been a report of significant negative side effects caused by one of the medications that is used by a large population of people and one including a well-known public figure. News reports having been reporting that of the possible individuals who have been taking this particular drug is effected by the side effects. The communication coordinator has to decide how to address the news reports and the general public about this situation. There are many different ways to communicate with the general public regarding the scenario described. As mentioned before the communication coordinator has to reach out to the general public regarding a medication that was distributed by a national drug manufacturer company that lead to significant side effects. Some of the different methods of communication using media are campaigns, medical journals, news reports, blogs, and other social medias. For the specific scenarios described previously it would be best to use the ampaign method. A campaign would be used to increase awareness, create a better understanding, modify attitude, and modify behavior (Health Industry Communication, Ch. 5). This method may be used when reaching out to a significant sized population. â€Å"The communication program will target whom, to help them understand, believe, or do what, by informing them of messages, through messengers and channels, to result in objectives† (Cheesebro, T. , O’Co nnor, L. , & Rios, F. , 2010, Ch. 5). The objective of utilizing the campaign method would reach out the larger population through possibly multiple different media methods, instead of just one or two. When considering using different types of media and which ones to include and exclude when communicating through media, it is important to consider the advantages and disadvantages of traditional, electronic, and social media. Traditional communication methods are the most common methods of communicating. This includes newspaper, journals, magazines, television, radio, and etc. While this might be considered one of the most effective methods compared to electronic and social media, there are disadvantages as well as advantages of traditional communication. One advantages of using traditional communication methods is this can reach a larger population which would then decrease the time it takes to reach the population by some other methods of communication. Another advantage of using traditional communication method is a larger part of the population uses this as resources to gain information for different point of interests. One disadvantage of using traditional communication methods is that it can be costly compared to some other communication methods. â€Å"Traditional medias have a high effect in creating awareness and influencing the attitude of the audience† (Tiwari, Singh, & Tiwari, 2003, p. 2). Electronic communication method also can be an effective way to communicate to the general public. Electronic communication includes email, phone calls, text messaging, video calling, and etc. Although not every method of electronic communication would be considered effective for scenario previously described, some such as email would assist with retrieving audience attention. Just like any other communication method, electronic communication method also has its advantages and disadvantages. An advantage of electronic communication method is it creates direct communication methods to the intended audiences which can begin to change audience attitude towards a circumstance before any other communication tactic takes into effect. One disadvantage of using electronic communication is there is a large section of the population that does not have access to electronics such as computers and internet. This population does not also have access to email and may not have easy access to a phone. Those people would then be more difficult to reach out to (Tiwari, Singh, & Tiwari, 2003). Another disadvantage may be the low literacy and language barrier of the population. Social media communication method is another way to communicate to the general public under different circumstances. Social media communication includes social sites such as Facebook, Twitter, online video sharing, podcasts, blogs, and etc. Although this may be an effective way to communicate to the public, there are advantages and disadvantages that come with social media communication. According to CDC (2011), † In the last several years, the use of Facebook, YouTube, Twitter and other social media tools to disseminate health messages has grown significantly, and continues to trend upward. Using social media tools has become an effective way to expand reach, foster engagement and increase access to credible, science-based health messages† (4). This also has an advantage because it reaches a larger population at a faster rate and costs less than some other methods of media communication. A disadvantage of using social media method in communication is the credibility of the resources may be still questioned by a large portion of the population. Another disadvantage of using social media communication is it may not reach all of the population to whom the topic is regarding. HIPAA plays a significant role in media communications. The essential functions of HIPAA regulations protect the privacy rights of patients and its users. When communicating health information, all health providers and any participants of health communication must ensure that the facts they wish to release are authorized and as accurate as possible (Nhanet, 2012). Any information released about any patients must be authorized by patients through written authorization and must follow federal and state guidelines. HIPAA prohibits any person communicating about health to public to disclose any information about patients even if it is general speaking of the patient. According to Hader and Brown (2010) â€Å"Healthcare providers using social media must remain mindful of professional boundaries and their patients’ privacy rights† (p. 1). In conclusion, communicating through different media methods can be a useful source to communicate effectively to the public. Some methods are better than other, however all methods have different advantages when communicating to the public. There are also many disadvantages that are to be considered when implementing each method. There are also HIPAA regulations that have to be followed when communicating about patients or to patients regarding any facts and issues. The media is a way to communicate to a significant sized population when HIPAA laws are followed.

Essay about Media Sports How did Baseball get Affected...

The media affects society in positive and negative ways. This can be seen in America’s national pastime baseball. Baseball is a sport that became the national sport in the United States in the late 19th century. From the beginning of the sport they tried to keep the highest standards to each player and ball club. There were times of scandal, but of all the things that happen to baseball substance abuse has been portrayed as one of the worst thing a player could do. To defame the baseball was to ruin everything the sport stood for. This research paper will look at one of the worst blotches in baseballs history, the steroid era. The steroid era as many know now started roughly 2003, but there was a time in which many forget. In†¦show more content†¦Baseball traditionalists got wind of this after a while though and charged the mound in essence to prove doping was wrong. That doing steroids undercuts baseball as a whole and its records left behind by legends. Th e medical community as a whole would later back this up and told of the serious side effects that ranged from male breast development to mood swings that would be later known as ‘roid rage. This would not be good for the public because the fans emulate what their idols do and if that’s what they believe needed to be done to be more like them they would. Eventually in almost every high school in the country, young athletes are told about these health risks associated with using Performance-enhancing drugs. This was only the beginning, soon the media would start to look down more upon what is going on in baseball and they would pursue it. In 2002 the Major League Baseball Players Association executive director was asked a question by Senator Byron Dorgan, â€Å"Is there a problem?† The Senator know there was a problem because a recent National League Most Valuable Player admitted to using steroids in a Sports Illustrated cover story. 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