Sunday, March 28, 2010

Top Web Hosting Companies 2010

I have to look for top web hosting companies every now and then, either for myself or for my friends. Now, i have decided to create a blog post for top web hosting companies to avoid searching again and again for web hostsing sites. Below is the list of few top Web Hosting Companies in 2010(the ranking changes every year and its better to check the latest reviews). Here is the list of top 10 web hosting companies gathered from different ranking sites.

JustHost:

Hosting Features(Detailed):

  • $3.45/month
  • Unlimited hosting space and data transfer
  • Unlimited Domains
  • Unlimited mySQL databases
  • Free Domain for Life
  • Free Online Store(Paypal Integration), Blog and Site Builder
  • Marketing Tools and Script Library
  • LiveChat with Customer Support
  • Professional Reseller Hosting
  • Reliable Customer Support and Upload Time
  • Anytime Money back Guarantee

    iPage:

    Hosting Features(Detailed)

    • $3.50/month
    • Unlimited hosting space and data transfer
    • Unlimited Domains and Email Accounts
    • Unlimited mySQL databases
    • Free Domain for Life
    • Free Online Store(Paypal Integration), Blog and Site Builder
    • Marketing Tools and Script Library
    • Free SiteLock Security Suite
    • Claim to be the Web hosting leader(many others claim it as well) serving 1,000,000 websites.
    • Reliable Customer Support and Upload Time
    • Anytime Money back Guarantee

    blueHost:

    Hosting Features (Detailed):

  • $6.95/month
  • Unlimited hosting space and data transfer
  • Unlimited Domains and 2500 Email Accounts
  • 100 mySQL and Postgres databases
  • Free Domain Forever and 1000 FTP acounts 
  • Free Board, Blog and Forum
  • Free ecommerce/Cart
  • Top Notch 24/7 Support , LiveChat
  • No money back Guarantee

    hostMonster:

    Hosting Features (Detailed):

  • $3.95/month for 36 months, $5.95/mon for 12 months
  • Unlimited hosting space and data transfer
  • Unlimited Domains
  • 100 mySQL and Postgres databases
  • Free Domain for Life
  • OS Commerce/Agora Shopping Cart
  • Search Engine Submission and Free Site Builder 
  • LiveChat with Customer Support
  • Quad Processor Performance Server
  • Best Support in Industry
  • No Cancellation Fee

    webHostingPad:

    Hosting Features (Detailed):

  • $3.95/month for 12 months, $2.95/mon for 24 months 
  • Unlimited hosting space and data transfer
  • Unlimited Domains
  • Unlimited mySQL databases
  • Free Domain 
  • OS Commerce Shopping Cart
  • CGI, Ruby, Perl, PHP, MYSQL
  • Money Back Guarantee 30 Days

    fatCow:

    Hosting Features (Detailed):

  • $4.58/month for 24 months, $5.50/mon for 12 months 
  • Unlimited hosting space and data transfer
  • Unlimited Domains
  • Unlimited mySQL  databases
  • Free Domain
  • ShopSite Online Store
  • Google WebMaster Tools 
  • LiveChat with Customer Support
  • Best Support in Industry
  • Money Back Guarantee 30 Days

     

    Although sites claims $3.95/mon but if you apply for a free domain it quotes $4.95/mon for 24 months and $5.95/mon for 12 months for most of the sites.

  • iPad Another Cool Gadget by Apple

    Image representing iPad as depicted in CrunchBase

    Image via CrunchBase

    We can lot of hand carrying devices coming out in the market in the name of E Readers from Amazon, Sony and Barnes and Noble. Amazon Kindle was a real success after many unsuccessful attempts to build a good E-reader. iPad has added a stiff competition to Amazon Kindle and other E-readers including Soney E-reader and B&N Nook.

    Apple is likely to transform the way we do everything from reading the newspaper, sending emails, listening music to preparing business presentations.

    IPAD OVERVIEW

    It can viewed as an oversized iPod touch with a modified interface. Its features include the ability to browse the web, check email,listen to music and edit photos.Apple also launched onary iBookstore for the device which will serve up books from atleast five major publishers.

    According to Apple

    A magical and revolutionary product at an unbelievable price Starting at $499.

     

    IPAD COMPOSITION

    Accordign to Wikipedia

    The iPad has a 9.7-inch (25 cm) LED backlit multi-touch display with a pixel resolution of 1024×768, 16 to 64 gigabytes (GB) of flash memory, a 1-gigahertz (GHz) Apple A4 processor, Bluetooth 2.1, and a 30-pin dock connector to sync with iTunes and connect wired accessories.

    It has built-in 802.11n to take advantage of the Wi-Fi networks. It also comes with Bluetooth 2.1 + EDR to connect to devices like wireless headphones or Wireless Keyboard. A model with 3G is expected soon.

    It comes with a choice of 16GB,32GB,64GB of flash storage and battery life of 10 hours.

    It also comes in with a headphone jack and builtin microphone.

    ACCESSORIES

    Popular iPad accessories are iPad keyboard dock that combines a dock for charging iPad with a full size keyboard. There is also iPad case,USB power adapter and iPad Camera connection kit.

    COST

    Prices range from $499 with 16GB to $829 for top 3G wireless enabled model

    SPECS

    • 1.5 pounds
    • 1GHz
    • 10 hours of battery life and month of battery standby.
    • Speaker
    • Microphone
    • Accelerometer
    • Compass
    • Headphone jack
    • 16 to 64GB of flash storage
    • Bluetooth

    Softwares

    iPad will run only softwares downloaded from Apple App Store. It will run almost all third party applications that run on iPhone. iPad comes with the following applications:

    • Safari
    • Mail
    • Calendar
    • YouTube
    • Video
    • iTune Store
    • App Store
    • Maps
    • Spotlight
    • iBooks (display books from iBookStore)

    Features Missing

    • Mutlitasking
    • USB port
    • SD slot
    • Camera
    • Flash

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    Saturday, March 27, 2010

    Living Walls: The ultimate raised-bed gardens

    Patrick Blanc - Musée du Quai Branly

    Image by antjeverena via Flickr

    The Living Walls are also known as “Vertical Gardens”,”Garden Murals”,”Plant Canvases” in modern era. Conventionally, by vertical gardens, planting a tall tree or training a vine to create a living wall comes to mind but things have changed in last two decades.

    Vertical gardening is  especially useful where there is shortage of space but not of imagination. These living walls look beautiful with their green leaves, colorful vegetables vertically erected on front of houses. These Vertical Gardens or Living Walls can be grown on any type of wall inside or out with or without soil. These Living Walls are becoming very popular due to their natural beauty and natural air purification.

    Its also becoming the subject of art.  Musee du quai Branly musuem near the Eiffel Tower in Paris is the best example of vertical garden work by the famous artist Patrick Blanc

    In one line,

    “Vertical gardening makes it easier to have ornaments and eat them, too.”

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    Friday, March 26, 2010

    Group Editing a Document

    Google Docs

    Image via Wikipedia

    Group Editing is now becoming increasingly important as more and more people are interacting online and most of the time not sitting under one roof. To work on a document, the slowest format is to edit a copy and then send it to one or more persons who are willing to work on the same document and then wait for them to edit it and give you a green signal to edit it.

    Wikipedia can be used to edit public documents that are copyright free.

    Google Docs is one service that can be used to group edit a document.

    CompareMyDocs.com  is a free service that displays the original document with colored blocks with collaborators suggestions which can be accepted or rejected alongwith hiding or showing the comments. The service is still in beta and only works for simple documents without images and hyperlinks.

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    Thursday, March 25, 2010

    Essential Android Apps

    OREM, UT -  NOVEMBER 5: A manager holds an App...

    Image by Getty Images via Daylife

    Nowadays, Cell Apps are getting attention in every tech magazine and it seems that you are either dumb or too naive if you don’t know a good deal about Apps.

    Ihone took the lead in making Apps popular followed by blackberry. Iphone has now more than 100,000 Apps with a great number of downlaods , more than 1 billion. Although Android is quite new as compared to Iphone and blackberry but it is catching quite quickly and already has more than 17,000 Apps and lot more to come in coming days. Essential Android Apps varies with your taste and preferences but i think following Apps are more or less popular with all users(you can disagree but not much :) ).

    Astrid:

    A nice file manager and todo list for those who find it hard to remember things. It syncs smoothly with Remember the Milk.

    Google Maps:

    Its really hard to get lost with google Maps in your hands even if you are on foot.

    YouTube:

    PreInstalled YouTube App on all Android phones

    Quick Search Box:

    Right on the main screen is quick search box on Android phones wheren you can search contacts,Apps and Google by typing or speaking.

    Google Voice

    Have just one number for all the world with Google voice. Record messages in voice and text, free SMS and cheaper international calls.

    Google Contacts:

    All Google contacts in gmail are automatically synced with your Android phone which is really a great relief.

    Amazon:

    Shopping can be made very easy through this App. Products scan(photo or barcode) are remembered so that it can be bought later.

    Pac Man

    Pac Man, historical and one of the most famous game is a must for game lovers

    Astro

    Astro is an Android Task manager to kill useless background application to run the phone at top speed. Astro is also a pretty good file manager.

    Facebook:

    A must have Apps on every smart phone, so how can you miss it on Android. Does not need any intro or does it ?

    Flixster:

    Flixster is all about movies, whats being played in the theatres, reviews and ratings. Every movie lover need to have it.

    FxCamera:

    Free camera application with photo effects like Polaroid, Fish eye etc.

    Goggles:

    In my view this a revolutionary Appf or visual search. It can show information about books, buildings, places,business cards and even art work.

    There are many more Google applications(Google Calendar, Google Finance,Gogole Earth, Google Shopper,Google Talk, Google Buzz,Gmail) and third party Applications that i like to mention but i think its enough for one post.

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    Tuesday, March 23, 2010

    A Briefer History of Time

    A briefer history of time is an update version of the earlier book A Brief History of Time by Stephen Hawking with Leaonard Mladinow. A Brief history of time was best seller for 237 weeks on the London Sunday Times and it was a miraculous success for a book that was written to deal with one of the most challenging and abstract issues in modern physics.

    A Briefer History of Time is briefer than the first book and some of the technical discussion has been left out for the sake of readability and briefness. It deals with the recent progress in String Theory , Unified theory or Theory of Everything. It also includes observations made by COBE(Cosmic Background Explore Satellite) and Hubble Telescope.

    The book starts with the discussion of Universe, its expansion, scientific theories about universe, Newton’s Universe, Relativity, curved spaces, expanding universe,big bang, black holes, evolution of the Universe, Quantum gravity, worm holes and Time travel, force of nature and the unification of physics.

     

     

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    Molecular Biology

    A cell

    Image via Wikipedia

     

    One of my friend is studying Molecular biology in lahore and Molecular Biology according to her is as follows:

    The field of molecular biology studies macro molecules and the macro molecular mechanisms found in living things, such as the molecular nature of the gene and its mechanisms of gene replication, mutation, and expression.

    The field of molecular biology arose from the convergence of work by geneticists, physicists, and structural chemists on a common problem: the structure and function of the gene.

    In the early twentieth century, although the nascent field of genetics was guided by Mendel's law of segregation,the actual mechanisms of gene reproduction, mutation and expression remained unknown. aik
    The techniques of molecular biology enabled numerous other fields to go molecular. The study of cells was transformed from descriptive cytology into molecular cell biology. Molecular evolution developed as a phylogenetic method for the comparison of DNA sequences and whole genomes.

    The term Molecular Biology was most probably invented by Warren Weaver in late 1930.

    In plain words, its the branch of biology that studies life at Molecular level which is mainly concerned with the systems of cell, including DNA,RNA,proteins and their interactions.

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    The Polygamists an exclusive look inside the FLDS

    Fundamentalist Church of Jesus Christ of Latter-Day Saints (FLDS), the controversial sect that split from the Mormon Church after it banned the plural marriage in USA.

    This church has around 10,000 members in America mainly in Texas, Arizona, Colorado and South Dakota.

    The church has not declared any leader after the conviction of Warren Jeffs who is sentenced for ten years or life in prison.

    The church is believed to be led by prophets who are guided by the God. The church has suffered a lot due to raids and arrests in twenty first century followed by prosecutions in Texas.

    The prominent doctrines of FLDS church are Plural marriage and placement marriage, dress, property onership, home schooling, temple worship.

    The official website of FLDS is as follows:

    Fundamental Church of Jesus Christ of Latter-Day Saints

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    Sunday, January 24, 2010

    AVATAR

    Avatar, another top notch movie by James Cameron after Titanic rocking US box office for the 6th straight week. Excellent Mind connection, Superb graphics, outclass story, beautiful romance, Inhuman Monetary Military mingling, Tragic sufferings, Belief powers, Exquisite forest and village life and extra ordinary direction.
    Morale of the film to me is
    "Fortune favours the brave".

     

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    Wednesday, July 15, 2009

    SQL Server 2008 Database Engine

    Architecture of MS SQL Server Full Text SearchImage via Wikipedia

    SQL Server 2008 Database Engine

    The Database Engine is the core service for storing, processing, and securing data. The Database Engine provides controlled access and rapid transaction processing to meet the requirements of the most demanding data consuming applications within your enterprise.

    Use the Database Engine to create relational databases for online transaction processing or online analytical processing data. This includes creating tables for storing data, and database objects such as indexes, views, and stored procedures for viewing, managing, and securing data. You can use SQL Server Management Studio to manage the database objects, and SQL Server Profiler for capturing server events.

    To learn more about the Database Engine, see SQL Server Database Engine and SQL Server Tools Tutorials.

    To quickly get to important high-level topics for the Database Engine, go to Database Engine Documentation Map


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    Saturday, July 11, 2009

    Earning Through Side Projects

    I was searching for PHP tutorials and manuals when i came acros cakePHP and found an interesting article on

    how much money i made from side projects


    Two noteable sites and and their description in the post is as follows:

    PlanbookEdu.com – This is a site for school teachers, designed to make their lesson planning easier. It originally launched in January of 2003 and the new version was re-launched this past July. There are currently over 3000 registered users, with 171 paying $20/year for premium features. That works out to $3420 for 2008. In 2007 there were 84 paying users ($1680). The only marketing I did this past year was sending an email to the registered users announcing the new version.

    RSStalker.com – This site gets approximately 50 hits a day from actual users…and over 50k hits a day from various RSS aggregators. Once a user has setup their feed there is no reason to go back to the site. If they buy a product using a link in the feed I get a commission from Amazon. In 2007 RSStalker sold 1049 items, generating $68,368.62 in revenue for Amazon and $3,358.20 in commission for me. The 2008 numbers are very similar: 1070 items, $76,875.06 revenue, $3,675.17 commission. Not much growth, but considering the economy that’s not too bad. Plus in 2007, two orders of 30 iPods each accounted for almost $700 in commission.


    and below is the link for free cakePHP book

    Free cakePHP book


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    Wednesday, June 24, 2009

    Improving English vocabulary

    {{en|Famous English people. A montage of 8 fre...Image via Wikipedia

    Improving English vocabulary

    This article is taken from English at Home

    Having a great English vocabulary doesn't just mean that you can understand lots of words and phrases: it also means that you can use these words and phrases and that you can remember them when you need them.

    This is the difference between an active and a passive vocabulary. Generally, most people's passive vocabulary is far bigger than their active vocabulary, and the secret is to try and "activate" passive knowledge.

    There are a number of ways that you can activate your passive vocabulary in English, ranging from simple five-minute activities to longer periods of study. Most activities work best if a) you have a good English dictionary, and b) you keep a vocabulary notebook.


    Good English dictionaries

    A good English dictionary should be up-to-date (no more than five years old!) and should be easy to understand. Make sure that the definitions are written in clear English. Pictures also help you to understand some words. I strongly recommend the Longman range of dictionaries, as there is good coverage of spoken and written English, British and American English, as well as clear example sentences.

    Vocabulary notebooks

    When you come across a new English word or phrase, make a note of it! Look up the meaning in the dictionary, making sure you are aware of any grammatical information. (For instance, if you are looking up a verb, check to see if the verb can be used in a passive form, if it is followed by any particular preposition, and so on.) Check also for the pronunciation and use of a word. Is it particularly formal or informal, or used in certain word partnerships? For example, we say "do housework", but "make an effort".

    When you find a new word, check to see if you can use it in other ways. English is a flexible language – nouns, verbs and adjectives often share the same stem. For example, a house, to house, housing policy, and so on.

    When you write down your new word in your notebook, try to include an example sentence in English.

    Some people find it helpful to organise notebooks into themes. So rather than having a list of words without any obvious connection, you divide your notebook into themes, with one page containing words to do with the house, another page with words to do with jobs, and so on.

    Quick English vocabulary booster activities

    1. An English word a day

    Choose a new word or phrase from your notebook and try to use it as often as possible in one day. Think of situations where you would need to use it, and write down a couple of example sentences. Go back to this word or phrase after a week, to make sure you still remember it.

    Some people find index cards useful. You can write down the word on the card and carry it around with you for a day, taking it out of your pocket whenever you have a moment and trying to put it into a sentence.

    2. Review

    The next time you have a spare couple of minutes, flick through your notebook. You'll be surprised how much comes back to you! Choose a page where you have already stored a number of words and expressions, cover the page, and try to remember what you wrote. Then look at the page and see how many you remember.

    3. One word at a time

    When you read a page of a book or newspaper, decide you will only look up one word in a dictionary. When you write it down in your notebook, also make a note of any synonyms (words that mean the same) or the opposite of the new word.

    4. English word building

    Take a prefix (such as "en", or "pre") and make a list of all the words that can follow. (For example, encircle, enclose, enlist; prenatal, premature, pre-war.) Here are some more prefixes you can use:
    dis, il, im, ir, pro, anti, de, un, con, re

    Longer English vocabulary learning activities

    1. Read

    Read something that interests you. It could be a newspaper, a novel, a magazine, or even an English "graded reader" (a simplified book). Working page by page, underline the words or phrases that you don't know. Look up only those that are important for understanding, or which are repeated. Use a good dictionary, and make a note in your English vocabulary notebook.

    2. Blitz

    Focus on a theme, such as sport. Divide one page of your notebook into three columns. In the first column write down as many sports as you can think of. In the second, write down all the equipment you need for the sport. In the third, write down the scoring systems. You might end up with something that looks like this:

    tennis racquet, ball, net umpire, love, linesman

    football pitch, ball, goal posts referee, offside, penalty

    You can use this method for many different themes: houses (rooms of house, furniture, styles); jobs (names of jobs, places where these jobs are done, characteristics of the job) and so on.

    3. Word association

    Write a key word in the middle of a page and draw a bubble around it. Then draw lines out from this word connected to smaller bubbles. In the smaller bubbles you can add words associated with the main word.

    For example, you could write "email" in the middle of a page. Then the smaller bubbles could contain words such as "write", "compose", "receive", "delete", "reply" and so on.

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    Wednesday, February 25, 2009

    Arabic Literature

    Main

    the body of written works produced in the Arabic language.

    The tradition of Arabic literature stretches back some 16 centuries to unrecorded beginnings in the Arabian Peninsula. At certain points in the development of European civilization, the literary culture of Islam and its Arabic medium of expression came to be regarded not only as models for emulation but also, through vital conduits such as Moorish Spain and Norman Sicily, as direct sources of inspiration for the intellectual communities of Europe. The rapid spread of the Islamic faith brought the original literary tradition of the Arabian Peninsula into contact with many other cultural traditions—Byzantine, Persian, Indian, Amazigh (Berber), and Andalusian, to name just a few—transforming and being transformed by all of them. At the turn of the 21st century, the powerful influence of the West tended to give such contacts a more one-sided directionality, but Arab litterateurs were constantly striving to find ways of combining the generic models and critical approaches of the West with more indigenous sources of inspiration drawn from their own literary heritage.

    Both terms in the title of this article are in need of elaboration. The use of the term literature in English to imply those writings that are susceptible to aesthetic analysis (as opposed to everything that is written) is of relatively recent vintage, and the development of a field of study devoted to it is yet more recent (with the study in the West of non-Western literary traditions being even more so). In Arabic the term for “literature” in the narrow English sense is adab, best translated by the French term belles-lettres (“beautiful letters”), which conveys the combination of the aesthetic and didactic elements found in adabmore effectively than does the English term literature. However, it is important to observe that, as is the case with many literary traditions, the origins of this Arabic term in the premodern period lie in the realms of correct behaviour (“polite letters”).

    The English language, unlike many other European languages, uses several adjectives—Arab, Arabic, and Arabian—to depict phenomena of the particular region and people that are linked to the notion of “Arab,” a word that has the original sense of “nomad.” For the purposes of this article, the term Arabic will be used to refer only to the Arabic language. The sections that follow will be concerned only with literature that has been composed in Arabic; it thus excludes works written by Arabs in other languages.

    The Arabic language in its earliest phases was relatively well protected from the forces of rapid change by the peninsular environment within which it developed. It is the best-preserved model of the Semitic languages. Its syntax and morphology—recorded and systematized as part of the massive research endeavour that followed the production of an authoritative version of the text of the Qurʾān in the 7th century (although this date is a matter of controversy)—provide evidence of early features of the Semitic languages. These features have since disappeared from sister languages, of which Hebrew is perhaps the most prominent. As the history of the revelation, memorization, and eventual recording in written form of the Qurʾān makes clear, the society of Arabia was one that relied to a large extent on human memory to preserve details of important events and principles and to pass on such information and artifacts to succeeding generations. That very reality makes it extremely difficult to pinpoint precise details regarding the earliest development of the Arabic language and its literary tradition. What has survived as the earliest examples of Arabic literary compositions consists of a highly elaborate system of poetic composition and a series of oratorical and often homiletic utterances, all couched in language of a variety and at a level that was to be later reflected in the style of the Qurʾānic revelations themselves. It is unclear, however, whether this apparently elevated language (perhaps reserved for special occasions, such as poetry competitions) was ever the means of spoken communication for any particular group.

    Whatever may have been the linguistic environment of pre-Islamic Arabia, the rapid spread of the faith across Africa and into Asia soon created a situation in which written and spoken Arabic inhabited opposite ends of a linguistic spectrum. At one end was the language of written communication and Islamic scholarship, which regarded the language of the Qurʾān as its inimitable yardstick; from this belief developed the later critical doctrine of iʿjāz al-Qurʾān (the “inimitability of the Qurʾān”), which resulted in a written (literary) language that has undergone remarkably little change over the centuries. At the other end was the spoken language of Arabs, which from Spain (known as Al-Andalus during the Moorish period) and Morocco in the west to the Arabian Gulf and Iraq in the east displayed—and continues to display—enormous variety, hardly a surprising linguistic phenomenon in view of the great distances involved and the wide variety of cultures with which Islam came into contact.

    Monday, February 09, 2009

    HP Launches Compaq Presario CQ 2000 Series Desktop PC in India

    HP Launches Compaq Presario CQ 2000 Series Desktop PC in India
    IT News Online Staff
    2009-02-03

    HP has launched the Compaq Presario CQ 2000 series desktop PC in India. The sleek and eco-friendly CQ 2000 is a space-saving device designed for the modern households.
    The company said the CQ 2000 can easily replace one's music system and DVD player as it doubles up as a multimedia player on which users can watch movies, play games, attach it to their LCD monitors and speakers or simply enjoy online video clips on You tube. The CQ 2000 also comes with the Compaq My Bhasha software, a communication enabler providing vernacular interface.

    The CQ 2000 is stylishly designed, lightweight at 3.5 kg and fits almost anywhere. HP said that with a 6-in-1 digital media reader and USB drives, all users need to do is plug-in, sit back and do what they need to effortlessly. The CQ 2000 is also energy star certified for being energy efficient and is made from fewer manufacturing materials for less wastage.
    Chandrahas Panigrahi, Country Category Manager, Consumer Desktops, PSG, HP India, said, "The CQ 2000 is a completely new category of PCs that will redefine the way desktops are viewed in terms of form factor and design. The main aim of launching the CQ 2000 is to offer an affordable PC to families, young professionals and Internet savvy people who want much more out of their PCs."
    "The Compaq My Bhasha software offered with the PC, for a 90 day free trial, will not only help break the language barrier for non-English speaking users, but also make computing a truly personal experience as the users get to email, chat, socialize online and do a lot more in the language they are most comfortable using," added Panigrahi
    The Compaq My Bhasha software provides an intuitive and natural vernacular computing experience through the webcam "simulated hands" interface. The 10 languages covered by the interface are Hindi, Tamil, Kannada, Gujarati, Marathi, Telugu, Bengali, Malayalam, Punjabi and Urdu. Users can choose any one language from the package that can be embedded in the system or installed later from a CD.
    The CQ 2000 Desktop PC with a 15" TFT screen is available all across India through HP's retail and distribution network at a starting price of Rs. 18,990/- plus taxes.

    Post taken from ITNEWSONLINE

    Thursday, February 05, 2009

    BigTable

    This article is taken from IT toolbox Data Management section.

    About BigTable

    BigTable is a propietary scalable distributed database system from Google Inc., a well known US based Internet services company, for supporting and managing the data intensive distributed GFS (Google File System) over clustering computers. BigTable has been designed, mainly, for managing petabytes of structured data distributed over a huge number of remote servers and computer nodes, specifically for Google Products.

    Bigtable is being used in over sixty Google products and projects such as Google Search engine, Google App Engine, Google Analytics, Google Finance, Orkut, Personalized Search, Writely, Google Earth, YouTube, Google Reader, Google Maps, etc.

    Bigtable is capable of handling demanding workloads of various intensities, ranging from throughput-oriented batch-processing jobs to latency-sensitive serving of data to the end users, specific to a particular Google application.

    Basic Architecture of a BigTable

    Although some operations of Bigtable are just like any traditional database, it is not based on relational database model. Architecturally, Bigtable is designed as a sparse, distributed, persistent multi-dimensional sorted map. Each value of the map is an array of bytes which is indexed by a row key, column key, and a timestamp. Bigtable basically treats data as series of continuous strings. Tables in BigTable are multidimensional and split-able.

    Data model of BigTable supports dynamic control over data layout and format. Bigtable has a number of choices for schema which can be used to control the locality of data dynamically based on particular client application. Location of data can be in-memory or directly from the disk. Also, BigTable is designed to handle serialized inputs of structured as well as semi-structured data into these strings from client applications by application of indexing mechanism used in BigTable.

    BigTable supports MapReduce programming model for parallel computations over large datasets over clustering computers. BigTable uses Chubby Lock service in order to facilitate synchonizing of the distributed applications for sharing application resources.

    For further information, references:-

    http://labs.google.com/papers/bigtable.html

    http://www.usenix.org/events/osdi06/tech/chang/chang_html/index.html

    Misquotation

    Misquotation is, in fact, the pride and privilege of the learned. A widely- read man never quotes accurately, for the rather obvious reason that he has read too widely.
     Hesketh Pearson

    Sunday, May 04, 2008

    Breakfast for a Boy

    It's been common scientific understanding that the sex of a baby is genetically determined by the father. Now we learn that the mother's diet may actually have an effect on whether she gives birth to a boy or girl. Researchers at Exeter and Oxford Universities recently reported a higher percentage of boys born to women who ate a high-energy diet around the time of conception; more girls were born to women who routinely skipped breakfast and had lower-calorie diets. People who skip breakfast have lower glucose levels. High levels of glucose encourage the growth and development of male embryos and inhibit female embryo growth.

    Thursday, April 03, 2008

    Boston Public Library

    On this date in 1848, the Massachusetts government okayed the establishment of the Boston Public Library, which would become the role model for all of America's lending libraries. Though libraries had already existed in various parts of the world for hundreds of years, this was the first municipal library in the United States to be supported by tax dollars, the first large library open to the public in the United States, and the first public library to allow people to borrow books and other materials and take them home to read and use. The third-largest library in the US, the current building was opened in 1895, on Copley Square.


     Perhaps no place in any community is so totally democratic as the town library. The only entrance requirement is interest.Lady Bird Johnson

    Tuesday, April 01, 2008

    Renewable Energy

    In addition to providing incentives to promote renewable energy sources, the Energy Policy Act of 2005 extended daylight savings time in the US by approximately four weeks... except in a leap year. In a compromise reached with religious lobbies and NASA, clocks are turned back again for the first two weeks of April in every year which has 29 days in February. This adjustment is necessary to compensate for discrepancies between the Gregorian calendar and the astronomical year. Hope you remembered to change your clock today. Oh, yeah... and the moon is made of green cheese.

    Quote

    "This is the day upon which we are reminded of what we are on the other three-hundred and sixty-four."Mark Twain