Sunday, April 25, 2010

Global Warming

Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) between the start and the end of the 20th century. The Intergovernmental Panel on Climate Changecaused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fueldeforestation. The IPCC also concludes that variations in natural phenomena such as solar radiationvolcanic eruptions had a small cooling effect after 1950. These basic conclusions have been endorsed by more than 40 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries. (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was very likely burning and and

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st century. The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. Most studies focus on the period leading up to the year 2100. However, warming is expected to continue beyond 2100 even if emissions stop, because of the large heat capacity of the oceans and the long lifetime of carbon dioxide in the atmosphere.

An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts. Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events, species extinctions, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional variations is uncertain.

Political and public debate continues regarding global warming, its causes and what actions to take in response. The available options are mitigation to reduce further emissions; adaptation to reduce the damage caused by warming; and, more speculatively, geoengineering to reverse global warming. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions.

Weight Loss

Maintaining a healthy weight is important for a healthy life. Excess weight is a recognized risk factor for many health problems including diabetes, heart disease, arthritis and hypertension. The best way to maintain a healthy weight is to take regular physical exercise and eat foods low in fat. People considered most at risk of developing health problems are those with a high Body Mass Index (BMI). BMI is calculated by taking weight in kilograms, and dividing by (height in meters). For people with a BMI of 27 or more, weight loss can be assisted by taking an effective weight loss medicine.

Stock Definition

> An instrument that signifies an ownership position (called equity) in a corporation, and represents a claim on its proportional share in the corporation's assets and profits. Ownership in the company is determined by the number of shares a person owns divided by the total number of shares outstanding. For example, if a company has 1000 shares of stock outstanding and a person owns 50 of them, then he/she owns 5% of the company. Most stock also provides voting rights, which give shareholders a proportional vote in certain corporate decisions. Only a certain type of company called a corporation has stock; other types of companies such as sole proprietorships and limited partnerships do not issue stock. also called equity or equity securities or corporate stock.

Barclays

Barclays plc is a British financial services firm operating worldwide. It is a holding company that is listed on the London and New York stock exchanges, and was listed on the Tokyo Stock Exchange until 2008. It is also a constituent of the FTSE 100 Index.

Barclays PLC is ranked as the 25th largest company in the world by Forbes Global 2000 (2008 list). According to Datamonitor, by market share, Barclays is the largest financial services provider globally with $3.7 trillion of assets. It is the second largest bank in the United Kingdom and the world based on asset size. Its share price fell by 90% in the year to 23 January 2009, but has recovered substantially, leaving it higher as of 3 September 2009 than it had been a year before.

The bank's headquarters are at One Churchill Place in Canary Wharf, in London's Docklands, having moved there in May 2005 from Lombard Street in the City of London.

Ferrari

Ferrari S.p.A. is a sports car manufacturer based in Maranello, Italy. Founded by Enzo Ferrari in 1929 as Scuderia Ferrari, the company sponsored drivers and manufactured race cars before moving into production of street-legal vehicles in 1947 as Ferrari S.p.A.. Throughout its history, the company has been noted for its continued participation in racing, especially in Formula One, where it has enjoyed great success.

GSM-Mobile

GSM (Global System for Mobile Communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile telephony systems in the world. The GSM Association, its promoting industry trade organization of mobile phone carriers and manufacturers, estimates that 80% of the global mobile market uses the standard.[1] GSM is used by over 3 billion people across more than 212 countries and territories.[2][3] Its ubiquity enables international roaming arrangements between mobile phone operators, providing subscribers the use of their phones in many parts of the world. GSM differs from its predecessor technologies in that both signaling and speech channels are digital, and thus GSM is considered a second generation (2G) mobile phone system. This also facilitates the wide-spread implementation of data communication applications into the system.

The ubiquity of implementation of the GSM standard has been an advantage to both consumers, who may benefit from the ability to roam and switch carriers without replacing phones, and also to network operators, who can choose equipment from many GSM equipment vendors. GSM also pioneered low-cost implementation of the short message service (SMS), also called text messaging, which has since been supported on other mobile phone standards as well. The standard includes a worldwide emergency telephone number feature (112).

Newer versions of the standard were backward-compatible with the original GSM system. For example, Release '97 of the standard added packet data capabilities by means of General Packet Radio Service (GPRS). Release '99 introduced higher speed data transmission using Enhanced Data Rates for GSM Evolution (EDGE).

CDMA-Mobile

Code division multiple access (CDMA) is a channel access method utilized by various radio communication technologies. It should not be confused with the mobile phone standards called cdma One and CDMA2000CDMA), which use CDMA as an underlying channel access method. (which are often referred to as simply

One of the basic concepts in data communication is the idea of allowing several transmitters to send information simultaneously over a single communication channel. This allows several users to share a bandwidth of different frequencies. This concept is called multiplexing. CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code) to allow multiple users to be multiplexed over the same physical channel. By contrast, time division multiple access (TDMA) divides access by time, while frequency-division multiple access (FDMA) divides it by frequency. CDMA is a form of spread-spectrum signaling, since the modulated coded signal has a much higher data bandwidth than the data being communicated.

An analogy to the problem of multiple access is a room (channel) in which people wish to communicate with each other. To avoid confusion, people could take turns speaking (time division), speak at different pitches (frequency division), or speak in different languages (code division). CDMA is analogous to the last example where people speaking the same language can understand each other, but not other people. Similarly, in radio CDMA, each group of users is given a shared code. Many codes occupy the same channel, but only users associated with a particular code can understand each other.

Bluetooth

Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short length radio waves) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Invented by telecoms vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization. Today Bluetooth is managed by the Bluetooth Special Interest Group.

Nokia in brief

At Nokia, we are committed to connecting people. We combine advanced technology with personalized services that
enable people to stay close to what matters to them. Every day, more than 1.2 billion people connect to one another
with a Nokia device – from mobile phones to advanced smartphones and high-performance mobile computers. Today,
Nokia is integrating its devices with innovative services through Ovi (www.ovi.com), including music, maps, apps, email
and more. Nokia's NAVTEQ is a leader in comprehensive digital mapping and navigation services, while Nokia Siemens
Networks provides equipment, services and solutions for communications networks globally.

2009 facts and figures
• Head office in Finland; R&D, production, sales, marketing activities around the world
• World’s #1 manufacturer of mobile devices
• Mobile device volumes 432 million units
• Reported net sales EUR 41.0 billion
• Reported operating profit EUR 1.2 billion
• 123 553 employees at year end (including Nokia Siemens Networks)
• Strong R&D presence in 16 countries
• R&D investment EUR 5.9 billion
• 37 020 employees in R&D (approximately 30% of workforce, including Nokia Siemens Networks)
• Sales in over 160 countries

Nokia organization

Devices is responsible for developing and managing our portfolio of mobile devices, which we make for all

major consumer segments.

Services designs and develops Internet services that enrich the experience people have with their mobile

devices and the web. Messaging, music, maps, media as well as Ovi developer tools are key focus areas as we

continue to expand our services offering to consumers and create opportunities for developers and content

providers.

Solutions is responsible for driving Nokia's offering of solutions, where the mobile device, personalized

services and content are integrated into a unique and compelling package for the consumer. The unit is tasked

with concepting and creating such solutions.

Markets manages our supply chains, sales channels, brand and marketing activities and is responsible for

delivering our devices, services and solutions to the consumer.

Corporate Development provides operational support to Devices, Services, Solutions and Markets, and is also

responsible for exploring corporate strategic and future growth opportunities.

Nokia Siemens Networks provides wireless and fixed network infrastructure, communications and networks

service platforms, as well as professional services to operators and service providers.

NAVTEQ is a leading provider of comprehensive digital map data for automotive navigation systems, mobile

navigation devices, Internet-based mapping applications, and government and business solutions. NAVTEQ's

map data will be an important part of the Nokia Maps service that brings downloadable maps, voice-guided

navigation and other context-aware web services to people's pockets.

Wikipedia

Wikipedia (pronounced /ˌwɪkɨˈpiːdi.ə/ WIK-i-PEE-dee-ə) is a multilingual, web-based, free-content encyclopedia project based on an openly-editable model. The name "Wikipedia" is a portmanteau of the words wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning "quick") and encyclopedia. Wikipedia's articles provide links to guide the user to related pages with additional information.
Wikipedia is written collaboratively by largely anonymous Internet volunteers who write without pay. Anyone with Internet access can write and make changes to Wikipedia articles (except in certain cases where editing is restricted to prevent disruption and/or vandalism). Users can contribute anonymously, under a pseudonym, or with their real identity, if they choose, though the latter is discouraged for safety reasons. The Wikipedia community has developed many policies and guidelines to improve the encyclopedia; however, it is not a formal requirement to be familiar with them before contributing. Since its creation in 2001, Wikipedia has grown rapidly into one of the largest reference web sites, attracting nearly 68 million visitors monthly as of January 2010. There are more than 91,000 active contributors working on more than 15,000,000 articles in more than 270 languages. As of today, there are 3,270,934 articles in English. Every day, hundreds of thousands of visitors from around the world collectively make tens of thousands of edits and create thousands of new articles to augment the knowledge held by the Wikipedia encyclopedia.
Every contribution may be reviewed or changed. The expertise or qualifications of the user are usually not considered. This is possible since Wikipedia's intent is to cover existing knowledge which is verifiable from other sources; original research and ideas are therefore excluded. People of all ages and cultural and social backgrounds can write Wikipedia articles as most of the articles can be edited by anyone with access to the Internet simply by clicking the edit this page link (found at the top of every editable page). Anyone is welcome to add information, cross-references, or citations, as long as they do so within Wikipedia's editing policies and to an appropriate standard. Substandard or disputed information is subject to removal. Users need not worry about accidentally damaging Wikipedia when adding or improving information, as other editors is always around to advise or correct obvious errors, and Wikipedia's software is carefully designed to allow easy reversal of editorial mistakes.
Because Wikipedia is a massive live collaboration, it differs from a paper-based reference source in important ways. In particular, older articles tend to be more comprehensive and balanced, while newer articles more frequently contain significant misinformation, unencyclopedic content, or vandalism. Users need to be aware of this to obtain valid information and avoid misinformation that has been recently added and not yet removed However, unlike a paper reference source, Wikipedia is continually updated, with the creation or updating of articles on historic events within hours, minutes, or even seconds, rather than months or years for printed encyclopedias.