Saturday, October 13, 2007

Whate is a Google

Google is a free service from Google where group of people. Internet users can find discussion groups related to their interface. Google Group also includes an archive of Usenet newsgroup. In February 2001,Google acquired Deja News, which provided a search engine to access to an archive of Usenet newsgroup articles. Google provides two distinct kinds of groups: traditional Usenet group and non-Usenet groups that are more similar to mailing lists. The Google Groups user interface.
Google Group allows users to easily create their own groups. During the creation process, the is prompted for a group name,e-mail address, description and access setting and then adds or invites members to the new group.
Users may create public profile which display their ,nickname,location,title,industry,website as well as the most recent posts they made.
Google Group has a directory of most Google groups and Usenet groups, Some group owners have set their groups to not appear in the directory. The directory organizes groups by topic, region, language activity level and number of member.

Thursday, October 11, 2007

University of Delhi

The University of Delhi is the premier university of the country. Its high standards in teaching and research and attracts eminent scholars to its faculty.
Only three collage existed then Delhi - St. Stephens Collage founded in 1881, Hindu College founded in 1899 and Ramjas College founded in 1917, Which were affiliated to the University.
Apart from central administrative office,examination offices and the sport complex, the main departments of the Faculty of Science are housed in the Vicerege Lodge Estate. Sir Maurice Gwyer,who was the then Vice Chancellor,realizing the import ance of a distinguished faculty,searched for talent all over the country.There are 14 faculties, 86 academic departments and 79 colleges spread all over the city,with about 2,20,000 student.

Wednesday, October 10, 2007

Mobile Phone

Global System for Mobile communication is the most popular standard for mobile phone in the world.The key advantage of GSM system to consumer has been better voice quality. The advantage for network operators has been the ease of deploying equipment. Mobile phone connect to it by searching for cell in the immediate vicinity. GSM networks operate in four different frequency ranges. Most GSM networks operate in the 900 Mhz or 1800 Mhz bands. Mobile phone and the network they operate under vary significantly from provider to provide and country to country. However, all of them communicate through electromagnetic radio wave. The phone have a low-power transceiver that transmits voice and data to the nearest cell site usually not more than 8 to 13 km away. When the mobile phone or data device is turned on, it register with the mobile telephone exchange. Gsm has used a varity of voice code to squeeze 3.1 kHz audio into between 5.6 and 13 kbit/s. Originally,two codecs,named after the types of data channel. There are four different cell size in GSM network-macro,micro,pico and umbrella cells. The coverage area of each cell varies according to the implementation environment. Micro cells can be regarded as cell where the base station antenna is installed on a mast or a building above average roof top level.

Tuesday, October 9, 2007

Bluetooth

Bluetooth is the name of a new technology. The Bluetooth specification defines three power classes for radio transmitters with an output power of 1m to 100m.The Bluetooth system has many optional feature. We also need to check that our silicon vendors lower stack implementation provides the Bluetooth function. Bluetooth is a standard for a small,cheap radio chip to be plugged into computer,printer,mobile phone etc. The Bluetooth specification has many optional features and even if features are mandatory to support,they do not have to be enable.

Sunday, October 7, 2007

INDIAN ECONOMY

India is the world's most populous democracy. Though one of the oldest civilization in existence. It has been a nation only since the end of British colonial rule in 1947. Historically, services and manufacturing have driven economic gains, but the majority of Indians still work in agriculture.
India was largest and intentionally isolated from the world market. India's exports were stagnant for the 15 years after independence. The predominance of tea, jute and cotton manufactures, demand for which
was generally inelastic. India's major trading partners are China, the US,the UAE,the UK,Japan and the EU. India is a found-member of general agreement on tariffs and trade(GATT) since 1947 and its successor.
India's balance of payments on its current account has been negative. As the third-largest ecomy in the world. India is undoubtedly one of the most preferred destination for foreign direct investments(FDI). India has strength in information technology and other significant areas are auto components,chemicals,apparels, pharmaceuticals and jewelery.

Saturday, October 6, 2007

womem's smoking

India is the largest producer of tobacco after China and America. There are 142 million men and 72 million women above the age of 15 years who consume tobacco; 2,200 persons die every day from tobacco related diseases . People are becoming aware of the ill-effects of smoking in terms of morbidity and mortality.
Woman and the Tobacco Epidemic – Challenges for the 21th Century states that eight percent of women developing countries and above 15% in industrialized countries currently smoke cigarettes. In India, about one-third of women use at least one from of tobacco. Overall prevalence of bidi and cigarette smoking among women is about 3% and 22% women consumers use smoking tobacco.Female smokers are more susceptible to osteoporosis or brittle bones. Also, smoking during pregnancy significantly increases the change of the infant dying of sudden infant death syndrome,delivering a pre-mature baby,delivering a low birth-weight baby.

Saturday, September 29, 2007

WATER POLLUTION

There are many specific causes of water pollution, but before we list the toppers, it's important to understand two broad categories of water pollution:
“Point source” — occurs when harmful substances are emitted directly into a body of water.
“Nonpoint source” — delivers pollutants indirectly through transport or environmental change. An example of a point source of water pollution is a pipe from an industrial facility discharging effluent directly into a river. An example of a nonpoint-source of water pollution is when fertilizer from a farm field is carried into a stream by rain (i.e. run-off).
Point-source pollution is usually monitored and regulated, though political factors may complicate how successful efforts are at true pollution control. Nonpoint sources aremuch more difficult to monitor and control, and today they account for the majority of contaminants in streams and lakes.
Many causes of pollution, including sewage, manure, and chemical fertilizers, contain "nutrients" such as nitrates and phosphates. Deposition of atmospheric nitrogen (from nitrogen oxides) also causes nutrient-type water pollution.