Tuesday, 17 January 2012

Tips On Buying A Desktop Computer

INTRODUCTION

A desktop personal computer is a most popular mode of personal computer. The system unit of the desktop personal computer can lie flat on the desk or table. In desktop personal computer, is usually placed on the system unit. A Purchasing a home or business computer can be a big and sometimes costly decision. It may be important to consider whether a laptop may be a better option instead, click to find out more about laptop deals. Below is a listing of helpful suggestions for what to look for and ask when purchasing a home or business computer new or used.
NEW vs. USED

Today there are two options to buy a computer, a new or used computer. Used computer are some time out of date, but you can buy it with very low price as compare to new computer, but I think branded or used computer are much stable than a new computer. Before purchasing a computer consider if you should purchase a new or used computer. Many individuals sell computer before they are out of date allow you to purchase a relatively decent computer. Before purchasing a new computer from a computer manufacture look at what is available and review the below precautions when purchasing a computer.
More Considerations

When purchasing a computer it is likely that you will have a general idea of what you may like in the computer or how you would like to configure the computer. Below is a listing of the various components likely to be found in a computer and recommendations and tips when considering any of the following components
Case
Generally there are two types of Computer Case are available in market, for Example Tower case and desktop case. The system unit of the desktop personal computer can lie flat on the desk or table and the monitor is usually placed on the system unit. An other model of the computer case is known tower. The system unit of the tower PC is vertically placed on the desk or table. But purchasing a computer case is generally not an important consideration when you are going to buy a Computer. However it depends upon the user needs and choice to building a computer case may find it important to consider the following considerations.





CD Media
CD-R -always will be an important consideration to think about when purchasing a new computer or used computer. A CD-writer or recorder (or simply CD-R drive) is used to write data on CD-R disks. Usually, a CD-writer can read information from CD as well as write information on CD, The locally produced CD-R disks are created with CD writer. The speed of these drives is up to 52X or more.

CD-RW
- You must have a CD-RW drive to write date on the CD-RW. These drives have read and write speed is up to 52X or more but the re-write speed is 10X or more. The CD-RW drive is advanced and more expensive than CD-R drive. It can write data on both CD-R and CD-RW discs and also read data from them

DVD - DVD stands for Digital Video Disk Versatile Disc. DVD-ROM is an extremely high capacity optical disc with storage capacity from 4.7 GB to 17 GB.



Hard Drive
Hard drives have and always will be an important consideration to think about when purchasing a new computer or used computer. Hard disk is most commonly used storage device in personal computers and laptop computers. Most application programs and operation systems require hard disk for installation and operation.



Processor
The computer processor is and will always be an important consideration when purchasing a computer. Processor is considered the brain of the computer. The CPU fetches instructions of program from main memory and executes them one by one. The speed of the CPU is measured in Mega Hertz or Giga Hertz and speed from 500 MHz to 3.4 GHz, it depends upon a user needs, that is why purchasing a processor is an important consideration when building or buying a computer. There are several considerations and additional information about what to ask and look for when purchasing a processor directly or already installed into a computer.

Increase your RAM and so system speed

1. Uninstall all useless softwares.

2. Delete temp files go to run %temp% and select and delete all files.

3. To increase the size of freee space on your hard drive and
If you are using windows XP you can use Disk Cleanup in the
Start / All programs / Accessories / System Tools / Disk Cleanup. You are safe to remove any files found from this program.

You can also go to Control Panel and run Add/ Remove Programs. Once the search has been populated you can remove any programs you are familiar with and not using often. Do not remove any updates as they are needed to make your computer work better. Also don't remove any System programs used by Windows.

More, Faster Weight Loss Seen With Gastric Bypass Than Banding

MONDAY, Jan. 16 (HealthDay News) -- Gastric bypass surgery results in faster and longer-lasting weight loss than does gastric banding, according to a new study by Swiss investigators.
A gastric bypass operation called Roux-en-Y involves reducing stomach size with staples and connecting the smaller "pouch" directly to the small intestine. It is irreversible.
Gastric banding, as its name implies, involves placing a band around part of the stomach to reduce its size. This procedure is reversible, the researchers noted.
"Both gastric banding and gastric bypass are currently performed for morbid obesity," said lead researcher Dr. Michel Suter, chief surgeon at Chablais Hospital in Aigle.
"Bypass is more effective in terms of directs results such as weight loss, but a bit more dangerous immediately than banding," he said.
However, banding often leads to long-term complications requiring some sort of major re-operation, Suter said.
"In addition, many bands are not going to stay in place for much more than 10 years; hence, banding is unlikely to be the only weight-loss procedure the patient will be submitted to," he said. "Patients should make a choice knowing this, and decide whether they accept a slightly higher early risk to improve their results, or if they want the least invasive procedure, but then accept a high risk of further surgery at a later time."
The report was published in the Jan. 16 online edition of the Archives of Surgery.
For the study, Suter's team followed for six years 442 patients who had either gastric bypass surgery or banding.
Although there were more early surgical complications among those who had Roux-en-Y surgery, these patients lost more weight faster than those who had gastric banding, the researchers found.
After bypass surgery, about 17 percent of the patients had complications, compared with more than 5 percent of those who underwent banding, the researchers noted.
But at six years there were more problems with gastric banding, including about 48 percent who had weight gain or the procedure reversed, compared with about 12 percent who had bypass surgery, the study found.
Gastric banding was associated with more long-term complications (more than 42 percent versus 19 percent) and more new procedures than bypass surgery (about 27 percent vs. 13 percent).
Cholesterol levels among those who had gastric bypass surgery were consistently lower than among those who had gastric banding, who saw no change over time, the researchers add.
This finding implies that blood sugar levels were also lower among those who underwent gastric bypass surgery, the study authors said.
Suter is concerned that many patients are only offered banding and not told of its drawbacks.
"There is, in the United States, an extensive campaign promoting gastric banding as 'the solution' for obesity, which is far from being true," he said.
It can result in significant weight loss, but it remains a surgical procedure, and is certainly associated with significant risks, both in the short and long term, Suter said.
"Patients must be informed that surgery alone is not sufficient to achieve significant weight loss, and they must be instructed about other things they have to do such as changing their eating and lifestyle habits," he said.
In addition, Suter said, "Patients calling or referred for gastric banding must be informed about the other available procedures for morbid obesity, and not offered band only, as is the case in several places."
Depending on the actual operation, either procedure costs between $10,000 and $20,000 plus follow-up costs, and insurance coverage is very inconsistent, according to Dr. Edward Livingston, who serves as the Dr. Lee Hudson-Robert R. Penn Chair in Surgery at the University of Texas Southwestern Medical Center, in Dallas.
Hospital stay for bypass is usually two days, and banding usually one day, but this can vary depending on surgeon, hospital and complications.
Dr. Jacques Himpens, from the European School of Laparoscopic Surgery at Saint Pierre University Hospital in Brussels and author of an accompanying journal editorial, is less concerned with a particular procedure than with the specific surgeon.
"Not all surgeons can do bypasses," he said. "Maybe they don't have the skills or the experience, but in any case it's not the best option because they are not up to it," he said. "That's the case for many surgeons."
In addition, it is not clear what the long-term results of a bypass are, because there is evidence that although a bypass "cures" diabetes, it does come back after time, Himpens said.
"The bypass is a very good procedure, but not everyone can do it and we have to be very careful and watch what the long-term effects of the procedure are," he said.
Also, while a gastric bypass causes changes in metabolism, banding does not, Himpens said.
"But the good thing is that it is reversible. When you take out the band, no harm has been done and you can still do another procedure if you need to," he said.
However, among patients who receive bands, only 40 percent retain them after 10 years, either because of complications or the desire to have it removed, Himpens said.

Health Tip: Get More Veggies Into Your Diet

Everyone knows it's important to eat a lot of vegetables. But how can you eat more of these healthy foods without upsetting your routine?
The American Dietetic Association offers these suggestions:
Top your favorite pizza with zucchini, tomatoes, mushrooms, spinach, green peppers or broccoli.
Lunch on a whole-wheat wrap filled with roasted vegetables.
Instead of chips, dip crunchy veggies into some low-fat salad dressing.
Throw some veggie kabobs on the grill.
Top salads with extra veggies, such as carrots or grape tomatoes.
Keep a stash of pre-cut veggies on hand for snacks and meals.

Science's "most beautiful theories"

From Darwinian evolution to the idea that personality is largely shaped by chance, the favorite theories of the world's most eminent thinkers are as eclectic as science itself.
Every January, John Brockman, the impresario and literary agent who presides over the online salon Edge.org, asks his circle of scientists, digerati and humanities scholars to tackle one question.
In previous years, they have included "how is the Internet changing the way you think?" and "what is the most important invention in the last 2,000 years?"
This year, he posed the open-ended question "what is your favorite deep, elegant or beautiful explanation?"
The responses, released at midnight on Sunday, provide a crash course in science both well known and far out-of-the-box, as admired by the likes of Astronomer Royal Martin Rees, physicist Freeman Dyson and evolutionary biologist Richard Dawkins.
Several of the nearly 200 scholars nominated what are arguably the two most powerful scientific theories ever developed. "Darwin's natural selection wins hands down," argues Dawkins, emeritus professor at Oxford University.
"Never in the field of human comprehension were so many facts explained by assuming so few," he says of the theory that encompasses everything about life, based on the idea of natural selection operating on random genetic mutations.
Einstein's theory of relativity, which explains gravity as the curvature of space, also gets a few nods.
As theoretical physicist Steve Giddings of the University of California, Santa Barbara, writes, "This central idea has shaped our ideas of modern cosmology (and) given us the image of the expanding universe."
General relativity explains black holes, the bending of light and "even offers a possible explanation of the origin of our Universe - as quantum tunneling from 'nothing,'" he writes.
Many of the nominated ideas, however, won't be found in science courses taught in high school or even college.
Terrence Sejnowski, a computational neuroscientist at the Salk Institute, extols the discovery that the conscious, deliberative mind is not the author of important decisions such as what work people do and who they marry. Instead, he writes, "an ancient brain system called the basal ganglia, brain circuits that consciousness cannot access," pull the strings.
Running on the neurochemical dopamine, they predict how rewarding a choice will be - if I pick this apartment, how happy will I be? - "evaluate the current state of the entire cortex and inform the brain about the best course of action," explains Sejnowski. Only later do people construct an explanation of their choices, he said in an interview, convincing themselves incorrectly that volition and logic were responsible.
To neuroscientist Robert Sapolsky of Stanford University, the most beautiful idea is emergence, in which complex phenomena almost magically come into being from extremely simple components.
For instance, a human being arises from a few thousand genes. The intelligence of an ant colony - labor specialization, intricate underground nests - emerges from the seemingly senseless behavior of thousands of individual ants.
"Critically, there's no blueprint or central source of command," says Sapolsky. Each individual ant has a simple algorithm for interacting with the environment, "and out of this emerges a highly efficient colony."
Among other tricks, the colony has solved the notorious Traveling Salesman problem, or the challenge of stopping at a long list of destinations by the shortest route possible.
THE OTHER PAVLOVIAN EFFECT
Stephen Kosslyn, director of the Center for Advanced Study in the Behavioral Sciences at Stanford, is most impressed by Pavlovian conditioning, in which a neutral stimulus such as a sound comes to be associated with a reward, such as food, producing a response, such as salivation.
That much is familiar. Less well known is that Pavlovian conditioning might account for placebo effects. After people have used analgesics such as ibuprofen or aspirin many times, the drugs begin to have effects before their active ingredients kick in.
From previous experience, the mere act of taking the pill has become like Pavlov's bell was for his dogs, causing them to salivate: the "conditioned stimulus" of merely seeing the pill "triggers the pain-relieving processes invoked by the medicine itself," explains Kosslyn.
Science theories that explain puzzling human behavior or the inner workings of the universe were also particular favorites of the Edge contributors:
* Psychologist Alison Gopnik of the University of California, Berkeley, is partial to one that accounts for why teenagers are so restless, reckless and emotional. Two brain systems, an emotional motivational system and a cognitive control system, have fallen out of sync, she explains.
The control system that inhibits impulses and allows you to delay gratification kicks in later than it did in past generations, but the motivational system is kicking in earlier and earlier.
The result: "A striking number of young adults who are enormously smart and knowledgeable but directionless, who are enthusiastic and exuberant but unable to commit to a particular work or a particular love until well into their twenties or thirties."
BEAUTIFUL IDEAS
* Neurobiologist Sam Barondes of the University of California, San Francisco, nominates the idea that personality is largely shaped by chance. One serendipitous force is which parental genes happen to be in the egg and sperm that produced the child.
"But there is also chance in how neurodevelopmental processes unfold - a little virus here, an intrauterine event there, and you have chance all over the place," he said in an interview. Another toss of the dice: how a parent will respond to a child's genetic disposition to be outgoing, neurotic, open to new experience and the like, either reinforcing the innate tendencies or countering them.
The role of chance in creating differences between people has moral consequences, says Barondes, "promoting understanding and compassion for the wide range of people with whom we share our lives."
* Timothy Wilson nominates the idea that "people become what they do." While people's behavior arises from their character - someone returns a lost wallet because she is honest - "the reverse also holds," says the University of Virginia psychologist. If we return a lost wallet, our assessment of how honest we are rises through what he calls "self-inference." One implication of this phenomenon: "We should all heed Kurt Vonnegut's advice," Wilson says: "'We are what we pretend to be, so we must be careful about what we pretend to be.'"
* Psychologist David Myers of Hope College finds "group polarization" a beautiful idea, since it explains how interacting with others tends to amplify people's initial views. In particular, discussing issues with like-minded peers -increasingly the norm in the United States, where red states attract conservatives and blue states attract liberals - push people toward extremes. "The surprising thing is that the group as a whole becomes more extreme than its pre-discussion average," he said in an interview.
* Martin Rees, professor of cosmology and astrophysics at the University of Cambridge, nominates the "astonishing concept" that what we consider the universe "could be hugely more extensive" than what astronomers observe.
If true, the known cosmos may instead "be a tiny part of the aftermath of 'our' big bang, which is itself just one bang among a perhaps-infinite ensemble," Rees writes. Even more intriguing is that different physics might prevail in these different universes, so that "some of what we call 'laws of nature' may ... be local bylaws."

Sunday, 15 January 2012

Hacker says to release full Norton Antivirus code on Tuesday

A hacker who goes by the name of 'Yama Tough' threatened Saturday to release next week the full source code for Symantec Corp's flagship Norton Antivirus software.

"This coming Tuesday behold the full Norton Antivirus 1,7Gb src, the rest will follow," Yama Tough posted via Twitter.

In the past week Yama Tough has released fragments of source code from Symantec products along with a cache of emails. The hacker says all the data was taken from Indian government servers

Wednesday, 11 January 2012

Lifetime Free Antivirus For Windows

An anti-virus is the most important tool which is installed on the system. It acts like a guard which protects all the important files, registries and other application on your system. So, selecting a good anti-virus is very important and the anti-virus which I will be reviewing today has many desirable features. which is known as Kingsoft anti-virus.

We have already viewed many anti-virus tools such as ‘AVG 2009’ and ‘Kaspersky’ but this tool has its own advantages which can be proffered over them. This freeware provides smart and effective protection to your system with low utilization of you CPU memory and all this happens with the help of Cloud technology used by this freeware. It is not like any other tool, which will be free for first few months, instead it will be permanently free. It will also monitor the webpage when you will be surfing and will perform an automatic scan, if any external storage device is connected to it. It has three types of general scan, one of them is Custom scan, Quick Scan and Full scan.

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As you can see from the application window and I have already mentioned about the three scans. The storage slots for Quick scan and Full Scan are already pre-defined, but the under Custom scan you can choose the sectors of your hard disk which are to be scanned. Under the settings option it has four important features, which are to be used.

The first one is the USB protection, which will be responsible for the secondary storage devices which are connected to your system, this feature will guard your system from the threats coming from secondary devices. Second one, is the Cloud Security this feature will be responsible to control the threats coming from internet. Third one is the IM protection or I should say Instant Messages Protection, this is responsible for the threats coming from Instant Messages tool like Gmail, Yahoo Messenger, RediffBol and many such tools and finally the forth one is Download protection, this feature will keep an eye on all the files which are being downloaded intentionally or if they are getting stored in the Temp folder.

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Besides all these features it also offers a similar type of protection as offered by other anti-virus tools. the size of this tool is small and light as compared to other antivirus tools, the size of this tool is around 16 Mb. So it will be very light for your system. This tool is compatible with all the versions of Windows as it has been checked with Windows 7 32-bit Ultimate edition.

Download Kingsoft Antivirus