The Bluetooth SIG and specifications Essay Example for Free

The Bluetooth SIG and specifications Essay If the success of Bluetooth is measured by its initial interest alone then its prominence has already been assured. Before products were on sale, hundreds of companies joined the Bluetooth Special Interest Group (SIG) and the Bluetooth brand became recognized worldwide. Before investigating the technology further it is appropriate to comment about the role played by the SIG, the administrative structure of which is outlined in Figure 3. With membership of the SIG nearing 2500 members it is only right to look at how the SIG works to promote, shape and define the specification and position Bluetooth in the market place. Positioning of the technology is important when you consider other wireless technologies that share the same ISM band, e. g. IEEE802. 11b, HomeRF and DECT. Differentiation is key in avoiding confusion of potential users. Figure 3: Bluetooth SIG Administrative Structure In 1994, Ericsson Mobile Communications began to examine alternatives to cables linking accessories with their mobile phones. This study produced the initial specification for wireless technology, with the Bluetooth SIG founded in February 1998 by the core promoters: Ericsson Mobile Communications AB. Intel Corp. IBM Corp. Toshiba Corp. Nokia Mobile Phones. The core promoters announced the global SIG in May 1998 and invited other companies to join as Bluetooth adopters. In July 1999 the core promoters published version 1. 0 of the specification and further enlarged the core promoter group in December 1998 with the inclusion of: ? Microsoft ? Lucent (now Agere) ? 3Com. ? Motorola. The responsibility for the various Bluetooth specifications is in the hands of the individual technical working groups. Once a specification reaches a version level 0. 5 it is made visible to associate members. An associate members must be recommended by a promoter, and submit a fee. When a specification reaches version 1. 0 it gets a higher level of visibility. Now adopters have visibility and any company can become an adopter by joining the SIG, signing and submitting the membership agreement (see â€Å"Bluetooth†). The Bluetooth specifications are open specifications for wireless communications that are free to download and use; however to use it royalty free you do have to join the SIG. By joining the group you sign up to an adopter’s agreement sharing any patents essential for implementing Bluetooth. The specifications define minimum functionality allowing devices from different companies to communicate (see â€Å"Bluetooth†). . They provide the following: o Protocol definitions for interoperability o Host controller interface o Bearer services for higher layer protocols o Profiles o Qualification o Production test o Brand book The Bluetooth specifications define the concept of a Personal Area Network (PAN), what they do not provide helps to position it in the ISM band. It is not focussed on Wide Area Networking (WAN) as it has a limited range and currently there is no hand over mechanism, though there is a working group. They do not provide implementation instructions at the application programming interfaces, user interfaces or a definition of hardware and software split. Although it could be argued there is guidance in the profiles’ specification. The rest of this section breaks down the specifications encompassing the key aspects of Bluetooth in order to explain the features (see â€Å"Bluetooth†).

High Blood Pressure :: Health, Cardiovascular Disease

High blood pressure is considered one of the highest causes of morbidity, one of the main leading causes for cardiovascular disease, and social global burden health risk factor. In addition to the high cost burden to the global health service providers. (referances) Data from World health organization2002, estimated that high blood pressure was the cause of death for more than 7 million individuals every year , affecting almost one billion of world population and responsible for 11% of all diseases burden in industrial countries.( WHO,2003) (BHFSD,2010).in industrial countries high blood pressure estimated to be the case of death for more than 20% of men and almost 24% of women (WHO.2002b) Kearney et al (2005) reported that in 2000, 972 million individuals were hypertensive which account for 26.4% of world population, of which 333 million in developed countries and 639 million in developing countries. It was affected 26.6% of men and 26.1% of women of general population. This study predicts this number to soar by about 60% in 2025 to reach a total of 1.56 billion. This elevation expected to be 9% and 13% in both men and women respectively. They found the highest prevalence rate of high blood pressure in women was in former socialist economies region while for men was in Latin American and Caribbean region and the lowest prevalence was in â€Å"other Asian and islands† region for both men and women. Elevated blood pressure contributes to (62%) of cardiovascular diseases, for example it attributes to 54% of stroke cases and 47% ischemic heart disease globally ( (Lawes et al., 2008 eup fix), it also responsible for 50% of heart failure burden in world. Furthermore the INTERHEART study estimated that having a hypertension was the reason for 25% of heart attack cases in both central and Eastern Europe while it represents the same reason for 22 % of Western Europe. Individuals who have an elevated blood pressure are suspect to have heart attack twice more than normotensive. (Yusuf et al., 2004 or British heart stast) In terms of disability –adjusted life-years, high blood pressure is come as a third cause after underweight and unsafe sex by affecting around 64 million. (Ezzati et al, 2002) .High blood pressure was estimated to be attributable to causing 9.3 % of disability in high income countries and 5.6% of disability in middle and low income countries.

Myopia of Learning Essay

Learning processes are powerful aids to intelligence but sometime they fail in coping with confusing experience and complicated problems because they do not take in consideration distant times, distant place and failures. The first step in overcoming these limitations is recognizing them and trying to avoid so they would not effect negatively in our performance. â€Å"Experience is often a poor teacher†. Drawing conclusion from experiences is common in the business world but we tend to forget that these conclusions are merely just point of views of went wrong or not with a decision. Learning from experiences can make you fall in repetition if you see that this way of doing things did actually brought the desired outputs. By doing so we tend to forget that not every issue has the same circumstances and qualities so the same thing that worked in another issue may not work in this task. Details and causality are two main factors that sometimes can guide you in a performance that can be successful or a failure. Experiences from the history of the organization are narrowed also by the memory, conflict, turnover, and decentralization that make it difficult to be a reliable source of experience. That is why sometime experiences give a misleading route in coping with problems. Learning is a process and people can perform differently. There are people that acquire knowledge at different paces; some are what we call fast learner and slow ones. If we put these two persons in the same start, the fast learner would learn quickly and perform the activity faster than the other one. This means that the other person would never have the chance to do something and this will narrow its possibilities to progress and learn. In an organization you will find people that are inactive because they do not have the chance to be active so you will tend to rely more on the faster learner. The manager will help more in building a wall that will end up by firing the slow learner. Learning gives you a broad image of the short-run activities but it fails to give you a solution to the long-run ones. For example now we learn things that maybe in some years will be irrelevant due to the advancing of the technology and globalization, that change the markets every minute we learn. That means that you stay stuck in time, even though the market is developing and changing. You tend to apply exploitation when maybe it is exploration time and tend to apply exploration when you should apply exploitation. This imbalance is due to the learning process because you tend to apply the easiest and quickest way of dealing with an issue In conclusion learning is a process that has limitations when we have temporal myopia (short-run goals are being overestimate), spatial myopia (effect that occurs near to the learner) and failure myopia (we tend not to recognize failure and attribute them to luck). If we avoid these limitations and try not to be influenced by biases, learning can be rewarding. Our life is a journey of learning only that not every issue can be alike, so there is no perfect solution to all our problems but there are approaches from our experience that can be changed to suit a new issue. Work Cited Levinthal,Daniel & March, James. The myopia of learning. Strategic Management Journal (1986-1988); Winter 1993; 14, Special issue; ABI/IFORM Global.

Modern Penal Systems The United States Adversarial System

In contemporary societies, crime is an undeniable fact of daily life. Modern penal systems are developed in order to bring justice towards those who transgress the inviolable laws and regulations imposed by the current legislative body. In the United States adversarial system, a common quandary associated with proper administration of justice is the question of who is liable for actions committed by members of a group or organization that has been found to be associated with organized crime. In the 1970’s, in the wake of a slew of crimes perpetrated by members of the Mafia, the Racketeering Influenced and Corrupt Organizations Act was established and signed into law by the Nixon administration. Under this act, simply referred to as R.I.C.O., leaders and members of a crime syndicate could be held on trial for criminal penalties for actions that they ordered others to perform. A major implication of this act was that an element of ambiguity inherent in the current criminal code was closed, thereby denying organized crime members immunity under the law for simply ordering the commission of crimes by lower members of the criminal conglomerate. Though the R.I.C.O. Act was established specifically in regards to racketeering, which includes the operation of illegal business through the imitation of a legitimate business, as well as the laundering of illegal funds through legitimate business, the actions deemed admissible for the establishment of a R.I.C.O. case have been expandedShow MoreRelatedThe Criminal Justice System Of The United States Constitution1184 Words   |  5 Pagesauthority to arrest, indict, try, and sentence individuals that have been accused of committing a crime. In an attempt to balance this authority the United States Constitution guarantees a number of inalienable rights to protect its citizens against tyrannical government power. 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