Wednesday, December 24, 2008

Nike Shoes Air Jordan – From A History Of Ingenuity To World Fame

Nike Shoes Air Jordan – From A History Of Ingenuity To World Fame

Air Technology at Its Fullest in the Nike Air Max Shoes

The Nike Air Max shoes, one of the best-selling line of shoes, is another shoe brand that uses the patented Nike Air technology. It is a later introduction to the “Air” shoes created by the Nike shoe company, the first ones being the Air Force Ones and the Air Jordans.

The Nike Air Max shoes’ most distinct feature is its visibly large air cushioning unit at the sole of most of its models. The air cushioning units differ in styles in several Air Max versions, but it is often evident in most models. It indicates the product line’s distinguishing factor from other Nike Air brands.

Some of the most popular editions of the Nike Air Max shoes are listed below.

Air Max I

The Air Max I is the first in the Nike Air Max product line. It was unveiled in 1987. The Air Max I has been re-released today with different styles, including a hybrid boot version.

Air Max Light

The Air Max Light, originally called the Air Max II, is the second product in the Nike Air Max shoe line. It was released in 1989, two years after the Air Max I. However, it was eclipsed by the Air Max III’s launch the following year. Nike re-launched the Air Max Light in 2007 to cater the next generation Air Max lovers.

Air Max 90

The Air Max III, also called Air Max 90, is the third version of the Nike Air Max shoe. It was called Air Max III until the year 2000 when Nike re-released the product naming it Air Max 90, the year it was launched. Its thick air cushioning unit at the sole is exaggerated further by the white/black/grey coloring.

Air Max BW

The Air Max BW, or the Air Max IV, is the best-selling model in the Nike Air Max shoes of all time. It was launched in 1991 and is the fourth model in the same product line. The Air Max BW is very popular among gabber music fans. It is also an extremely hot item in the hip-hop culture and fashion.

Air Max 95

The seventh in the Nike Air Max shoe line, the Air Max 95 was released in 1995. It is also called the Air Total Max. The Air Max 95’s make is based on human anatomy and high technology. The shoe’s spine resembles the human spine and its materials represent human skin.

Air Max 360

The Air Max 360, launched in 2006, is one of the later editions of the Nike Air Max shoes. It uses the Max Air throughout its midsole. Nike also released hybrid versions of the shoes, fusing Air Max 90, Air Max 95 and the Air Max 97 models into the hybrid Air Max 360, in September 2006.

Among Nike’s various brands, the Air Max shoes lived up to its expectations. It enjoys a large number of followers and its sales records are impressive. Proof of its popularity is that some of its models have been imitated or copied in some parts of the world.

By: Throne96 Throne96

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Monday, December 22, 2008

Last Minute Christmas Gift Ideas

Last Minute Christmas Gift Ideas

There are many people who don't plan their Christmas gift ideas and just buy the gifts a night before the Christmas or even on the Christmas night while going to someone's place. We are presenting some last minute Christmas gift ideas so that you can still get a good gift even without planning anything.

We all are bust these days so no one has time to plan your Christmas gifts long back. No salaried person or student has time to even think of Christmas presents earlier. Every one wants to meet the daily commitments and relax after that and on Christmas Eve everyone realizes they need Christmas gifts for their friends and family members.

There are also some people who don't want to spend much money on Christmas presents. Therefore, some people just take a half day off and bake cakes. This is very famous among students where they bake cakes and cookies for their friends. Everything for baking a cake is available in general stores and a self baked cake makes a great present. You can then wrap it beautifully with colored paper and ribbons.

If you don't have time than you can probably go for online shopping. Online Christmas shopping is also helpful when your relatives or friends live out of town. Online website and stores also gift wrap your gift and then make sure that it is delivered in time. There are many stores which gives you good discounts online. Therefore, you can buy some great gifts cheaply.

Another great Christmas gift idea is giving the gift of images. You can make a collage of pictures which includes the moments spent by you with the person who you are sending the gift. You can also get a family portrait done cheaply. You have to just spend a couple of hours on pictures and you'll make your own Christmas present for everyone. You can also buy photo frames and gift the pictures in frames. If you are good at fine arts you can make some sceneries and wall papers which can be used by anyone for their home walls.

Some people also like to gift Books on Christmas. If you know the type of books a person reads then you can gift those books to the person. You can also buy a latest novel or some classic book which is read by everyone. Further, finding books is easy because there are many online as well as normal stores which offer books at a reasonable price. All stores categorize the books and so they are very easy to find. You can also save money if you buy multiple copies of the same book and gift them to different persons.

You can also gift antique show pieces like statues. These can be placed in person's bedroom and they make a great Christmas gift idea.

If you don't like the above ideas then you can always stick to traditional pack of chocolates and a gift card. Everyone likes gift cards because you can buy any thing from the gift card. Further, you don't have to search for hours for searching for a good gift cards. Gifts cards are offered by every store, we recommend that you give a gift card of a store like Wal-Mart. They sell everything so this allows the person to buy anything of his/her own choice.

If you are looking a Christmas gift idea for your girl friend then you must buy something romantic. There are many ready made baskets filled with gifts available in market. These baskets also allow you to add a note on the top. This makes a perfect romantic gift for someone you really love. When you are looking for a Christmas gift idea for your boy friend then you can buy some sports equipment which he always wanted.

By: John Pike

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Saturday, December 6, 2008

Exercise and Hypertension

Exercise and Hypertension

It seems as though many Americans are living a life that leads to high blood pressure or hypertension. As people age, the situation gets worse. Nearly half of all older Americans have hypertension.

This disease makes people five times more prone to strokes, three times more likely to have a heart attack, and two to three times more likely to experience a heart failure.

The problem with this disease is that nearly one third of the folks who have hypertension do not know it because they never feel any direct pain. But overtime the force of that pressure damages the inside surface of your blood vessels.

However, according to experts, hypertension is not predestined. Reducing salt intake, adopting a desirable dietary pattern losing weight and exercising can all help prevent hypertension.

Obviously, quitting bad habits and eating a low fat diet will help, but the most significant part that you can do is to exercise. And just as exercise strengthens and improves limb muscles, it also enhances the health of the heart muscles.

Heart and Exercise

The exercise stimulates the development of new connections between the impaired and the nearly normal blood vessels, so people who exercise had a better blood supply to all the muscle tissue of the heart.

The human heart basically, supply blood to an area of the heart damaged in a “myocardial infarction.” A heart attack is a condition, in which, the myocardium or the heart muscle does not get enough oxygen and other nutrients and so it begins to die.

For this reason and after a series of careful considerations, some researchers have observed that exercise can stimulate the development of these life saving detours in the heart.

One study further showed that moderate exercise several times a week is more effective in building up these auxiliary pathways than extremely vigorous exercise done twice as often.

Such information has led some people to think of exercise as a panacea for heart disorders, a fail-safe protection against hypertension or death. That is not so. Even marathon runners that have suffered hypertension, and exercise cannot overcome combination of other risk factor.

What Causes Hypertension?

Sometimes abnormalities of the kidney are responsible. There is also a study wherein the researchers identified more common contributing factors such as heredity, obesity, and lack of physical activity.

And so, what can be done to lower blood pressure and avoid the risk of developing hypertension? Again, exercise seems to be just what the doctor might order.

If you think that is what he will do, then, try to contemplate on this list and find some ways how you can incorporate these things into your lifestyle and start to live a life free from the possibilities of developing hypertension. But before you start following the systematic instructions, it would be better to review them first before getting into action.

1. See your doctor
Check with your doctor before beginning an exercise program. If you make any significant changes in your level of physical activity — particularly if those changes could make large and sudden demands on your circulatory system — check with your doctors again.

2. Take it slow

Start at a low, comfortable level of exertion and progress gradually. The program is designed in two stages to allow for a progressive increase in activity.

3. Know your limit

Determine your safety limit for exertion. Use some clues such as sleep problems or fatigue the day after a workout to check on whether you are overdoing it. Once identified, stay within it. Over-exercising is both dangerous and unnecessary.

4. Exercise regularly

You need to work out a minimum of three times a week and a maximum of five times a week to get the most benefit. Once you are in peak condition, a single workout a week can maintain the muscular benefits. However, cardiovascular fitness requires more frequent activity.

5. Exercise at a rate within your capacity

The optimum benefits for older exercisers are produced by exercise at 40% to 60% of capacity.

Indeed, weight loss through exercise is an excellent starting point if you wan tot prevent hypertension. Experts say that being overweight is linked to an increased risk of developing hypertension, and losing weight decreases the risk.

Thursday, December 4, 2008

Harmful Effects of Passive Smoking

Harmful Effects of Passive Smoking
By April Kerr

Although many people try their best to stay away from the temptations of smoking in order to stay healthy, they could still suffer from its harmful effects just by inhaling second-hand smoke from other smokers' cigarettes.

This is also called as passive smoking, environmental tobacco smoke or ETS, and secondhand smoking.

Passive smoking means the smoke in the environment that is exhaled from the smoker's lungs, or the smoke coming from the smoker's cigarette, pipe or cigar, is being inhaled by others.

In simple terms, it is known to be the involuntary breathing of smoke from different tobacco products.

This happens when tobacco smoke saturates the environment, and people in the immediate vicinity are inhaling it.

Although the person itself is not the one who is smoking, many studies have shown that inhalation of secondhand smoke poses risks to the bystanders, and are even more harmful than firsthand smoke.

This is because the smoke particles in the air are much smaller than the smoke drawn straight from a cigarette, meaning it can go deeper into the lungs of the person inhaling it.

There are scientific evidences that show how frequent exposure to secondhand smoke can cause disability, disease, and ultimately, death.

Because many people realize the harmful effects of secondhand smoke, several public areas such as workplaces, restaurants, night clubs, and bars follow smoking bans.

The short term effects of passive smoking can vary depending on the person's vulnerability to nicotine.

Other people can stay in a room with smokers and not feel any effects at all, while others can only stay in a matter of minutes or hours, and feel ill.

Common short term effects include headache, coughing, nausea, and lethargy to the average person.

These effects could be worse in people who already have health conditions such as asthma, where one could have an asthma attack because of secondhand smoke exposure.

For allergic patients, they could suffer from watery eyes, stuffy or runny nose, sneezing, and more.

There are several harmful long term effects of passive smoking, and this could vary depending on one's exposure to secondhand smoke.

The more frequent one is exposed to environmental smoke, the more chances of getting diseases related to smoking such as lung cancer, heart disease, lung infection, ear infection, asthma, allergies, and many more.

For pregnant women exposed to environmental smoke, they have a higher risk of getting miscarriage and birth defects.

Children who are frequently exposed to secondhand smoke may also face learning difficulties, and they may develop asthma.

As much as possible, if your work or lifestyle entails you to remain in a closed room filled with smokers, don't just sit there and say "Oh, but it's not me who's smoking."

Remember, passive smoking is also dangerous to you, and if you continue to expose yourself to secondhand smoke, then you may experience harmful effects in the long run.

Stay away from smokers as much as possible, and when visiting public places, choose one that has a smoking ban, or at least proceed to the non smoking area.

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Resident Evil 5 Review

Resident Evil 5 Review
By Nikhil Mahajan

Resident Evil 5, the sequel to Resident Evil 4, is the fifth game in the series. It is currently under development but people have started talking of it. What did they heard about it?

Not much about the Resident Evil 5 has been yet revealed by its developer Capcom. Few details have been released about the game.

The concept is believed to be similar to Black Hawk Down. The gameplay as announced by the producer, Jun Takeuchi, will be similar to Resident Evil 4. Then what else will be included in the Resident Evil 5.

It is the most anticipated game of the year and it is not going to be released in 2008 too. Resident Evil 5 was announced in 2005 but its release date is pushed forward sometime in 2009.

Developers had also stated that the darkness concept of Resident Games will diminish. Players can hunt zombies in the sparkling light instead of the dark.

This will be a totally new concept in the series to be introduced through Resident Evil 5. Besides zombies, two new enemies will also be introduced in the game.

They will be different from zombies and ganados in the sense that they will posses more intelligence and weapons than their predecessors.

The plot of the Resident Evil 5 will be set in an Africa. First human being was originated in Africa. But in game, Africa will be shown as the land where viruses were originated. Resident Evil 5 will also feature improved graphics and lightening effects.

Players can go outside at different moments of the day as well as in different weather conditions. Player's ability to work in light and darkness will be based on the real human ability to work under such conditions. In Resident Evil 5, player will take sometime to adjust accordingly as the humans do.

Resident Evil 5 gameplay and controls are highly based on the Biohazard 4. Capcom will announce latest news about the game at E3 conference that is going to be held in July, 2008. There have been issues associated with the Resident Evil 5.

Controversies became part of it before it is released. Resident Evil 5 came under the controversy of racial discrimination. Criticizers concerns about how white man is shown as the hero while black zombies in the African village.

They believe that it is not zombie shown as black but the black Africans shown as zombies which really looks to be.

I think Resident Evil 5 like previous Resident Evil games will be a major hit for the Capcom. The game will surely demonstrate itself.

Resident Evil 5, after being released, will be acclaimed by many reviewers and criticizers despite of few controversies that will become its forgotten past.

I also believe that the issues of racial discrimination shown in Resident Evil 5 will just let the world know what's all happening in Africa and how the people are being treated there.

We all know how dodgy AIDS or HIV could be, and through Resident Evil 5 developers have made the efforts to show the same thing.

So I give full marks to the Resident Evil 5 for the efforts that it will be making to raise the personal standards of the people of Africa directly or indirectly. I hope Resident Evil 5 proves to be super hit.

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Wednesday, December 3, 2008

Jim Valvano Biography

Jim Valvano Biography
From Wikipedia, the free encyclopedia

James Thomas Anthony Valvano, (March 10, 1946–April 28, 1993), nicknamed Jimmy V, was an American college basketball coach.

While the head coach at North Carolina State University, he won the 1983 NCAA Basketball Tournament against high odds. Valvano is remembered for running up and down the court after winning the 1983 NCAA championship, seemingly in disbelief and looking for someone to hug. He is also remembered for his 1993 ESPY Awards speech, given shortly before he died of cancer.

Valvano was the middle child of Rocco and Angelina Valvano, and was married for 25 years to his high school sweetheart, Pamela Levine. They have three daughters: Nicole, Jamie, and Lee Ann. Valvano attended Seaford High School on Long Island, New York.

Vince Lombardi was Valvano’s role model. Valvano told an ESPY audience, on March 4, 1993, that he took some of Lombardi’s inspirational spe

eches out of his book Commitment to Excellence and used them with his team. Valvano discussed how he planned to use Lombardi's speech to the Green Bay Packers in front of his Rutgers freshman basketball team prior to his first game as a coach.

College playing career

Valvano was a point guard at Rutgers University in 1967, where he partnered with first-team All American Bob Lloyd in the backcourt. Under the leadership of Valvano and Lloyd, Rutgers finished third in the 1967 NIT Tournament, which was the last basketball tournament held at the old Madison Square Garden. Jim was named Senior Athlete of the Year at Rutgers in 1967. He graduated with a degree in English in 1967.

Coaching career

Valvano's 19-year career as a head basketball coach included stops at Johns Hopkins, Bucknell, Iona, and NC State. His career record was 346-212. During his 10 year NC State career, Valvano's teams were the ACC Tournament Champions in 1983 and 1987 and the ACC regular season champions in 1985 and 1989. The Wolfpack won the NCAA Men's Basketball Championship in 1983, in addition to advancing to the NCAA Elite 8 in 1985 and 1986. He was twice voted ACC coach of the year. Valvano became NC State's athletic director in 1986.

Valvano's famous reaction after the Wolfpack victory came after the game-winning shot in the 1983 NCAA finals. Dereck Whittenburg heaved a last-second airball that was caught and dunked by Lorenzo Charles as time expired. By a score of 54-52, NC State beat a top seeded University of Houston team that was on a 26-game winning streak and was lead by future Basketball Hall of Famers Clyde Drexler and Hakeem Olajuwon. Previously, NC State won the college basketball championship in 1974.


In 1990, accusations of rules violations surfaced in the book Personal Fouls by Peter Golenbock. Two local newspapers and the NC State student paper called for his ouster. A 1989 NCAA investigation cleared Valvano, but found that players sold shoes and game tickets. As a result, NC State placed its basketball program on probation for two years (the maximum) and was banned from participating in the 1990 NCAA tournament.

The state-appointed Poole Commission issued a 32-page report that concluded that there were no major violations of NCAA regulations, and that Valvano and his staff's inadequate oversight of players' academic progress violated "the spirit, not the letter of the law." After this report, Valvano was forced to resign as the school's athletic director in October 1989.

He remained as basketball coach through the 1989-1990 season. Under subsequent pressure from the school's faculty and new Chancellor, Valvano negotiated a settlement with NC State and resigned as basketball coach on April 7, 1990. Six separate entities investigated Valvano and the NC State basketball program including the NC State Faculty Senate, the North Carolina Attorney General, the University of North Carolina Board of Governors, the NC State Board of Trustees, and the NCAA. None of them found any academic, recruiting, or financial improprieties.

Valvano's version of these events can be found in his 1991 autobiography, Valvano: They Gave Me a Lifetime Contract, and Then They Declared Me Dead.

The following letter from Bob Valvano offers his point of view on the firing of Valvano:

I appreciate the kind words about your wishes for the book, and very much appreciate your candor about my brother and his reputation. Your summation is in fact one of the main reasons I want to write the book. I agree that he has been 'sanctified' and it is for the wrong reasons. He got sick and died very young, and handled it with great dignity and courage. I am proud of that. But he really was no different in his illness than he was in health. It was simply the perception, publicly, that changed, and your comments are a reflection of that. Let me ask you a question. You say Jim ran one of the dirtiest programs in America. Did you know that after three investigations, the only thing he was ever accused of was that his players sold complimentary athletic shoes and tickets? Period. Did you know that? Did you know that the guy who ran the NCAA investigation, Dave Dideon, a hardened veteran of dealing with slick, underhanded coaches, said that he never investigated a more misunderstood coach than Jim, and that following the investigation, he wrote a letter to Jim saying that if he had a son, he would be proud to have him play for Jim? Probably not, and my guess is that if you did, you would rather not have it cloud your preconceived judgment that Jim was a bad guy. He made mistakes. He tried to do too many things at once. He assumed details were being tended to that weren't, that he should have seen to. But dirty program? Astoundingly inaccurate, but perpetuated, as is the misconception that he became a 'good guy' when he got sick. He was always a 'good guy,' an inspiring guy, and he made his share of mistakes. Both have been blown out of proportion, and it makes Jim a cartoon character. Please don't take my remarks personally . . . I am probably tilting at windmills to think I will change anyone's mind, but it is a noble fight. To fight it, I can't, and won't, make Jim out to be a saint, but the criticisms are as inaccurate as the accolades are simplistic. It is worth trying. -Bob Valvano

After coaching

After his coaching career, Valvano was a broadcaster for ESPN and ABC, including a stint as a sideline reporter for the inaugural season of the World League of American Football. In 1992, Mr. Valvano won a Cable ACE Award for Commentator/Analyst for NCAA basketball broadcasts. From time to time he was paired with basketball analyst Dick Vitale. The two even made a cameo appearance, playing the role of professional movers, on an episode of The Cosby Show.

Valvano created JTV enterprises to guide many of his entrepreneurial endeavors. He gave hundreds of motivational speeches across the country and was a featured guest on The Tonight Show with Johnny Carson and Late Night with David Letterman.

One of Valvano's most memorable motivational speeches was delivered February 21, 1993 at Reynolds Coliseum on NCSU's basketball court during the ten year commemoration of the University's 1983 NCAA championship. It was during this speech that Valvano stressed the importance of hope, love, and persistence and included his famous "Don't give up, don't ever give up" quotation.

ESPY speech and death

Valvano was diagnosed with metastatic bone cancer in June 1992. In July, he found out that it had spread.

Shortly before his death, he spoke at the inaugural ESPY Awards, presented by ESPN, on March 4, 1993. While accepting the inaugural Arthur Ashe Courage and Humanitarian Award, he announced the creation of the "V Foundation", an organization dedicated to finding a cure for cancer. He announced that the foundation's motto would be "Don't give up. Don't ever give up." During his speech the teleprompter stated that he had 30 seconds left, to which Valvano responded, "They got that screen up there flashing 30 seconds, like I care about that screen. I got tumors all over my body and I'm worried about some guy in the back going 30 seconds." His speech has become legendary, and he closed the speech by saying, "Cancer can take away all of my physical abilities. It cannot touch my mind, it cannot touch my heart, and it cannot touch my soul. And those three things are going to carry on forever. I thank you and God bless you all." One particularly poignant section of Valvano's speech is as follows:

To me, there are three things we all should do every day. We should do this every day of our lives. Number one is laugh. You should laugh every day. Number two is think. You should spend some time in thought. And Number three is, you should have your emotions moved to tears, could be happiness or joy. But think about it. If you laugh, you think, and you cry, that's a full day. That's a heck of a day. You do that seven days a week, you're going to have something special.

Valvano received a lengthy standing ovation. He died less than two months later after a year-long battle with cancer. He is interred in the Cedar Hill Section of Oakwood Cemetery in Raleigh, North Carolina.


A 1996 TV-movie titled Never Give Up: The Jimmy V Story, starred Anthony LaPaglia as Valvano. In 1993, Valvano was inducted into the Rutgers' Basketball Hall of Fame. In 1999, Valvano was inducted into both the Hall of Distinguished Alumni at Rutgers University and the New York City Basketball Hall of Fame. In 2004, Valvano was inducted into the National Italian American Sports Hall of Fame.

V Foundation

The V Foundation is a charitable organization dedicated to saving lives by helping to find a cure for cancer. The foundation seeks to make a difference by generating broad-based support for cancer research and by creating an urgent awareness among all Americans of the importance of the war against cancer. The V Foundation performs these dual roles through advocacy, education, fundraising, and philanthropy. Its motto is “Don’t give up. Don’t ever give up.”

The Jimmy V Celebrity Golf Classic has traditionally been held in August at Prestonwood Country Club in Cary, North Carolina, however in 2006 the Jimmy V Celebrity Golf Classic was moved to Pinehurst, NC so that it could attract higher profile players to the fundraiser. Each year, four men's college basketball teams compete in the "Jimmy V Basketball Classic". Recently, a women's game was added to the lineup. To date, the V Foundation has raised over $70 million for cancer research.

Sunday, November 30, 2008

A Sonic boom

A Sonic Boom
From Wikipedia, the free encyclopedia

The term sonic boom is commonly used to refer to the shocks caused by the supersonic flight of an aircraft.

Sonic booms generate enormous amounts of sound energy, sounding much like an explosion. Thunder is a type of natural sonic boom, created by the rapid heating and expansion of air in a lightning discharge


When an object passes through the air, it creates a series of pressure waves in front of it and behind it, similar to the bow and stern waves created by a boat.

These waves travel at the speed of sound, and as the speed of the object increases, the waves are forced together, or compressed, because they cannot "get out of the way" of each other, eventually merging into a single shock wave at the speed of sound. This critical speed is known as Mach 1 and is approximately 1,225 kilometers per hour (761 mph) at sea level.

In smooth flight, the shock wave starts at the nose of the aircraft and ends at the tail. Because directions around the aircraft's direction of travel are equivalent, the shock forms a cone with the aircraft at its tip. The half-angle (between direction of flight and the shock wave ) A is given by sin(A) = 1/M, where M is the plane's Mach number.

So the faster it goes, the finer, more pointed the cone. There is a sudden rise in pressure at the nose, decreasing steadily to a negative pressure at the tail, followed by a sudden return to normal pressure after the object passes. This "overpressure profile" is known as an N-wave because of its shape.

The "boom" is experienced when there is a sudden change in pressure, so the N-wave causes two booms, one when the initial pressure rise from the nose hits, and another when the tail passes and the pressure suddenly returns to normal.

This leads to a distinctive "double boom" from supersonic aircraft. When maneuvering, the pressure distribution changes into different forms, with a characteristic U-wave shape.

Since the boom is being generated continually as long as the aircraft is supersonic, it fills out a narrow path on the ground following the aircraft's flight path, a bit like an unrolling celebrity carpet and hence known as the boom carpet.

Its width depends an the altitude of the aircraft. The distance of the point on the ground where the boom is heard to the aircraft depends on its altitude and the angle A.


The power, or volume, of the shock wave is dependent on the quantity of air that is being accelerated, and thus the size and shape of the aircraft. As the aircraft increases speed the shocks grow "tighter" around the craft and do not become much "louder".

At very high speeds and altitudes the cone does not intersect the ground and no boom is heard. The "length" of the boom from front to back is dependent on the length of the aircraft to a factor of 3:2[citation needed]. Longer aircraft therefore "spread out" their booms more than smaller ones, which leads to a less powerful boom which has a less "spread out" boom.

Several smaller shock waves can, and usually do, form at other points on the aircraft, primarily any convex points or curves, the leading wing edge and especially the inlet to engines. These secondary shockwaves are caused by the air being forced to turn around these convex points, which generates a shock wave in supersonic flow.

The later shock waves are somehow faster than the first one, travel faster and add to the main shockwave at some distance away from the aircraft to create a much more defined N-wave shape. This maximizes both the magnitude and the "rise time" of the shock which makes the boom seem louder.

On most designs the characteristic distance is about 40,000 feet (12,000 m), meaning that below this altitude the sonic boom will be "softer". However, the drag at this altitude or below makes supersonic travel particularly inefficient, which poses a serious problem.


In the late 1950s when supersonic transport (SST) designs were being actively pursued, it was thought that although the boom would be very large, the problems could be avoided by flying higher.

This premise was proven false when the North American B-70 Valkyrie started flying, and it was found that the boom was a problem even at 70,000 feet (21,000m). It was during these tests that the N-wave was first characterized.

Richard Seebass and his colleague Albert George at Cornell University studied the problem extensively and eventually defined a "figure of merit" (FM) to characterize the sonic boom levels of different aircraft. FM is a function of the aircraft weight and the aircraft length.

The lower this value, the less boom the aircraft generates, with figures of about 1 or lower being considered acceptable. Using this calculation, they found FM's of about 1.4 for Concorde and 1.9 for the Boeing 2707. This eventually doomed most SST projects as public resentment mixed with politics eventually resulted in laws that made any such aircraft impractical (flying only over water for instance).

Another way to express this is wing span. The fuselage of even large supersonic aeroplanes is very sleek and with enough angle of attack and wing span the plane can fly so high that the boom by the fuselage is not important.

The larger the wing span, the greater the downwards impulse which can be applied to the air, the greater the boom felt. A smaller wing span favors small aeroplane designs like business jets. Seebass-George also worked on the problem from another angle, trying to spread out the N-wave laterally and temporally (longitudinally), by producing a strong and downwards-focused (SR-71 Blackbird, Boeing X-43) shock at a sharp, but wide angle nosecone, which will travel at slightly supersonic speed (bow shock), and using a swept back flying wing or an oblique flying wing to smooth out this shock along the direction of flight (the tail of the shock travels at sonic speed).

To adapt this principle to existing planes, which generate a shock at their nose-cone and an even stronger one at their wing leading edge, the fuselage below the wing is shaped according to the area rule. Ideally this would raise the characteristic altitude from 40,000 feet to 60,000 feet (from 12,000 m to 18,000 m), which is where most SST aircraft fly.

This remained untested for decades, until DARPA started the Quiet Supersonic Platform project and funded the Shaped Sonic Boom Demonstration (SSBD) aircraft to test it. SSBD used an F-5 Freedom Fighter. The F-5E was modified with a highly refined shape which lengthened the nose to that of the F-5F model.

The fairing extended from the nose all the way back to the inlets on the underside of the aircraft. The SSBD was tested over a two year period culminating in 21 flights and was an extensive study on sonic boom characteristics.

After measuring the 1,300 recordings, some taken inside the shock wave by a chase plane, the SSBD demonstrated a reduction in boom by about one-third. Although one-third is not a huge reduction, it could have reduced Concorde below the FM = 1 limit for instance.

As a follow-on to SSBD, in 2006 a NASA-Gulfstream Aerospace team tested the Quiet Spike on NASA-Dryden's F-15B aircraft 836. The Quiet Spike is a telescoping boom fitted to the nose of an aircraft specifically designed to weaken the strength of the shock waves forming on the nose of the aircraft at supersonic speeds.

Over 50 test flights were performed. Several flights included probing of the shockwaves by a second F-15B, NASA's Intelligent Flight Control System testbed, aircraft 837.

There are theoretical designs that do not appear to create sonic booms at all, such as the Busemann's Biplane

Perception and noise

The sound of a sonic boom depends largely on the distance between the observer and the aircraft shape producing the sonic boom. A sonic boom is usually heard as a deep double "boom" as the aircraft is usually some distance away.

However, as those who have witnessed landings of space shuttles have heard, when the aircraft is nearby the sonic boom is a sharper "bang" or "crack". The sound is much like the "aerial bombs" used at firework displays.

In 1964, NASA and the Federal Aviation Administration began the Oklahoma City sonic boom tests, which caused eight sonic booms per day over a period of six months. Valuable data was gathered from the experiment, but 15,000 complaints were generated and ultimately entangled the government in a class action lawsuit, which it lost on appeal in 1969.

There has been recent work in this area, notably under DARPA's Quiet Supersonic Platform studies. Research by acoustics experts under this program began looking more closely at the composition of sonic booms, including the frequency content.

Several characteristics of the traditional sonic boom "N" wave can influence how loud and irritating it can be perceived by listeners on the ground. Even strong N-waves such as those generated by Concorde or military aircraft can be far less objectionable if the rise time of the overpressure is sufficiently long.

A new metric has emerged, known as perceived loudness, measured in PLdB. This takes into account the frequency content, rise time, etc. A well known example is the snapping of your fingers in which the "perceived" sound is nothing more than an annoyance.

The composition of the atmosphere is also a factor. Temperature variations, humidity, pollution, and winds can all have an effect on how a sonic boom is perceived on the ground. Even the ground itself can influence the sound of a sonic boom.

Hard surfaces such as concrete, pavement, and large buildings can cause reflections which may amplify the sound of a sonic boom. Similarly grassy fields and lots of foliage can help attenuate the strength of the overpressure of a sonic boom.

Currently there are no industry accepted standards for the acceptability of a sonic boom. Until such metrics can be established, either through further study or supersonic overflight testing, it is doubtful that legislation will be enacted to remove the current prohibition on supersonic overflight in place in several countries, including the United States.


The cracking sound a bullwhip makes when properly wielded is, in fact, a small sonic boom. The end of the whip, known as the "cracker", moves faster than the speed of sound, thus resulting in the sonic boom. The whip was the first human invention to break the sound barrier.

A bullwhip tapers down from the handle section to the cracker. The cracker has much less mass than the handle section. When the whip is sharply swung, the energy is transferred down the length of the tapering whip.

In accordance with the formula for kinetic energy (Ek = mv2 / 2), the velocity of the whip increases with the decrease in mass, which is how the whip reaches the speed of sound and causes a sonic boom.

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Wednesday, November 26, 2008

Engineering Careers: Analysis And Creativity Come Together

Engineering Careers: Analysis And Creativity Come Together

At the other end of the spectrum, however, lies a more optimistic breed. These people believe that the world as we know it does not live up to its potential.

They are highly inquisitive, and dare to challenge the status quo. If you count yourself among this league of imaginative dreamers--and possess the mathematical and scientific training necessary to execute your visions--the field of engineering could prove a highly rewarding career path.

Engineers not only enjoy the satisfaction of making the world a better place, but also boast some of the highest starting salaries of all college graduates.

Engineering: A Basic Job Description
Engineers act as liaisons between the world of pure research and its commercial applications.

Drawing on their formal education and their fluency in modern technology, engineers design, test, and evaluate new products.

They rely heavily on computers for both product development and procedural monitoring. An engineer's career choices are incredibly varied, ranging from biotechnology to electronics development, and nearly everything in between.

In fact, the Bureau of Labor Statistics (BLS) recognizes 17 major engineering specialties.

Educational Requirements for Engineers
Most engineers enter the field with a bachelor's degree. Students may find the engineering program of study to be refreshingly well rounded, covering the expected subjects of mathematics and physical & life sciences, but also including courses in design, the social sciences, and humanities.

Because most engineers specialize, undergraduate engineering students typically concentrate on a specific area of study.

The BLS notes, moreover, that prospective students should carefully investigate a school's curriculum before graduating.

A program's content can vary widely from one institution to the next, and aspiring engineers may want to ensure that their education aligns with their future career path.

Other Engineering Requirements
In addition to a bachelor's degree, successful engineers boast excellent communication and analytical skills. Creativity is also a must in this field of ever-expanding horizons.

An engineer's education is essentially never-ending. Once hired, engineers need to keep themselves abreast of new technological developments in order to remain valuable to their employers.

Job & Salary Outlook
Job openings for engineers should be plentiful in the coming decade, with faster-than-average growth projected for environmental and industrial engineering specialties.

Earnings vary considerably based on specialty and level of education. As of 2007, the average starting salary for an engineer with a bachelor's degree ranged from $47,960 (environmental engineers) to $60,718 (petroleum engineers).

Typical engineering programs take 4-5 years to complete, so don't hesitate to begin your college search and start pursuing this exciting career.

By: Kelli Smith

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Friday, November 21, 2008

3 Health Tips For Your Kids

3 Health Tips For Your Kids
By Sue Baker

The health of children is a major issue in the US and UK not only for each individual family but also for the governments.

More and more children are falling prey to bad eating habits and are suffering from childhood obesity.

What can be done to ensure that they don't end up developing a huge potbelly and protect their health?

Here are 3 health tips for your kids to help them avoid obesity problems in both childhood and when they become adults.

1. Start training them early:

Training your kids on how to lead a healthy life should start early. When they are very young teach them healthy eating and lifestyle habits.

Avoid putting sugary products on their soother or giving them sweet snacks and sugary drinks just for an easy life.

If you train them in good health right from an early age, they would be able to make health choices for themselves when they become older.

Some parents indulge their children with unhealthy foods when they are young and then can't understand why they won't eat fresh fruits and vegetables when they are older. Parents should encourage children to eat healthy foods right from the start!

2. Eat as a family:

A family which eats together stays healthy together. It is common practice nowadays for parents to eat separately or in front of the television set. It is far better to sit round the table as a family so that you can ensure that they are following the healthy eating habits that you have taught them.

Eating as a family has the added advantage of each person having the opportunity to discuss their day and for you to know if there are any problems to be addressed. Share all your ups and downs!

Children also learn about social skills required for when they grow up. It has been found in the UK that a number of children entering primary school for the first time do not even know how to use a knife and fork because they are so used to eating pizza or other finger foods in front of the TV. How sad is that?

3. Be a role model for your kids:

How can you expect your kids to follow your advice if you do not practice what you preach. Practice what you preach; your kids too will follow you! Children, especially very young children imitate their parents and copy what they do. If they see you following a healthy and perfect lifestyle they will more than likely, do the same.

Keep in mind that kids, even though younger in age than you, are not fools! They see and understand more than what you think. By walking the talk and living a healthy lifestyle yourself, you will not only serve as a role model for your kids, but also improve your own health condition!

Get them involved with meal planning, preparing the meal, and cooking it with close supervision and according to their age. Teach then well and let them make healthy choices for their own lunch boxes.

Even if your kids follow any unhealthy eating habit, you can rectify it early before it turns into a bad habit!

Follow these three easy tips to ensure that your kids have the knowledge to be able to start to live healthily throughout their entire life!

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Thursday, November 20, 2008

What is Obesity and How to Fight It

What is Obesity and How to Fight It
By Carrie S Donald

No one would say obesity is attractive, nor healthy. Prevention of obesity is really a straightforward proposition. If you'll forgive the pun, prevention of obesity is truly worth many pounds of cure.

People of normal, stable weight may gain a few pounds over the holidays, partaking of all that holiday cheer. Cookies, fudge, delicious gravies and a few glasses of eggnog are all it takes to get you there. However, most people shed those pounds within a couple of months, once they return to normal eating habits. It all comes down to a reduction of calories.

Prevention of obesity should become your target when you find you've gained ten pounds or more and it doesn't come off. An alarm should sound off in your head when weight starts creeping on and you seem unable to lose weight. Now is the time to take action! It's far easier to lose ten or twenty pounds than a hundred!

Other signals that indicate a prevention program is necessary include finding that your clothes are too snug. Many people have sections in their closet, one their 'fat' clothes, with another for their 'skinny' clothes. Not only is this an unnecessary expense, but a psychological trick you're playing on yourself. It goes something like this. "Well, I guess I just have to accept it - people do tend to gain weight as they get older. What's one dress size anyway? I still look OK."

The trouble with this attitude is that you're putting yourself in denial. This means you'll not be motivated to prevent obesity, because you don't think it's possible. You might make a token attempt to diet, but you won't stick with the program. This is how that weight eventually balloons to an unmanageable problem.

So, the real core issue in the prevention of obesity begins in your mind. You must be motivated. Do you want to wait until the day when some little child in the grocery tells her Mom, "Look how fat that woman is!"? That's when it's useless to deny the fact. Prevention of obesity involves an early start.

If you need help in getting motivated, here are a few tips. Go online and calculate your BMI. Read up on the many health problems you may well face. Heart disease, poor circulation, diabetes and joint stress damage are just a few. Dig through old photo albums to find pictures of you when you were of normal weight. Tape that photo on the frig, at eye level, along with a picture of you now. Try on one of your 'skinny' clothes.

OK. Now you've got the motivation. You should first check with your doctor to be sure you don't have a medical condition, like a thyroid imbalance. If that's not the case, get ready to diet. Don't cut yourself any slack. Remember, prevention of obesity is your goal.

Losing weight always boils down to calories. How do you know how many calories you normally eat? Keep a food journal for one week. Write down every last cracker and soda that passes your lips. Get a calorie counter book. Ask your doctor to help plan a diet that's healthy and right for you.

Motivation is the key to prevention of obesity. With a radical dose of motivation, you'll lose that extra weight for good

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Monday, November 10, 2008

Exercise For Asthma Patients - Some Important Tips

Exercise For Asthma Patients - Some Important Tips
By Abhishek Agarwal

Most people who suffer from Asthma perhaps wonder if they can exercise safely or properly. Leaving apart what most people think, one can actually exercise to get in shape even when you are a victim of Asthma.

Asthma comes more as a lung disorder that is chronic, marked by features of wheezing, shortness of breath, chest tightness and coughing. Asthma occurs when people get environmentally or genetically predisposed to conditions.

Triggers such as viral respiratory infections, exposure to cockroaches or dust mites and exposure to allergens could start or make any attack worse.

Preventing Asthma could be done in the following manner:

1. Make sure to bathe your pets at least weekly.

2. Never smoke or permit to smoke at your dwelling

3. When pollen or mold counts are more, ensure to stay in-door with air-conditioning.

4. Don't forget to wash stuffed toys and bedding at least once in a week with hot water.

5. Ensure to wash hands every time you get the chance.

6. Have a flu shot given to yourself.

7. During Winter wear a scarf covering nose and mouth.

8. Become proactive knowing your triggers right; knowing how to avoid them.

The above pointers have made you aware about asthma prevention. There are exercises that fit in such circumstances too. Any doctor would suggest not giving up on exercise and sports, whatsoever. All that people need to be aware of is to be alert and smart about taking special pre-cautions towards avoiding attacks.

Doctors would agree that preventing attacks while you are exercising could be done in a best way; using an inhaler along with appropriate medications. Inhalers should not be used more than three times when you are in an exercise session or a game. If you have been wheezing and coughing the previous night, then it is implied to implement lighter exercises the next day.

For Exercise Induced Asthma, IEA, the symptoms differ to what is generic. The attack occurs after about 6-7 minutes of attack and is often worse in case of dry and cold air.

When you are suffering from IEA, there are various activities which could be enjoyed. These activities include walking, biking, downhill skiing, swimming, or team based sports. Quite many activities could be tried to ascertain that you get the much needed exercise.

Asthma is not something that is within the mind; it is fully physiological and an equally similar medical treatment is required for the same. Your doctor is the best person who could assist you with the disorder; you need to prevent yourself from any asthma attacks.

Ascertain to be smart by taking the right medications at the right time and being proactive. Never let asthma bring misery in your life; enjoy life and exercise just like anyone else would have done

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Wednesday, November 5, 2008

Stress Solutions: Ten Tips To Cope With Stress

Stress Solutions: Ten Tips To Cope With Stress
By: Dr Arien van der Merwe

Stress levels are higher than ever. The current economic crisis is taking its toll on physical and mental health and wellbeing. All the distress obviously affects workplaces, and particularly morale and productivity. Short fuses dramatically increase the potential for dysfunctional behaviours that affect everyone from top management and colleagues, to customers and families. Managing stress is vital to overall health and wellbeing!

• One minute stress buster: Breathe in deeply through your nose on a slow count of three. Push your stomach out as you breathe in. Hold it for a count of three. Breathe out through your mouth on a slow count of six. Repeat two or more times. Try this every time you feel stressed, anxious or worried. Do it every morning before you get up and every night before falling asleep. Feel your pulse rate by putting your fingers gently on your wrist below the thumb. When you’re stressed, your breathing and pulse rate become fast. Do the slow breathing and feel how your pulse rate slows down – a quick fix stress buster!

• Quiet time and deep relaxation: Can be done anywhere, anytime to refocus the mind and improve concentration and sense of wellbeing. Deep relaxation enhances cardiovascular health, respiratory health, balances the endocrine and nervous system and improves mental clarity. Imagine your thoughts being the waves on the surface of the ocean. They go up and down as the mood, your feelings, emotions and your memory dictate. The deeper ocean is quiet, still and peaceful. This is the part you can access voluntarily any time of the day and night through meditation, visualisation, deep breathing and prayer.

Practice mindfulness

• On waking, spend a few moments lying in bed. Enjoy the delight of the fresh morning air, the sparkle of early sunlight, the sound of birds. Sense the life flowing through your body. Notice your breath, the pulsing of blood in your fingertips, the tug of gravity upon your arms, legs, and trunk. Take a few deep slow breaths. This is a good time to write in your journal – dreams, thoughts, ideas, feelings. Get out of bed slowly, observing the shift in your center of balance as you move into an upright position. Stand erect, without strain. Feel your feet on the ground. Become aware of your whole body. Go about the early morning’s activities with mindfulness, really experiencing them with all your senses. Cultivate serenity early in the morning and carry the feeling with you throughout the day. We control how we respond to irritations, worries, doubts and fears. Preparing the mind like this, calmly centers you throughout the day.

• Spend a few minutes every morning in quiet contemplation. Create your special space – upright in your bed, a meditation stool, or cushion, or a comfortable chair, crystals, colourful candles, soft music or the silence of a perfect day.

- You can eat, drink, or walk mindfully by focusing exclusively on eating, drinking, or walking.
- Stop and notice your breath at various times throughout the day.
- Cultivate a sense of being, rather than always feeling like you have to be doing something.

• Tired eye soother

Splash eyes with cold water – alternate with a hot washcloth over your closed eyelids and press gently with your fingertips. Rub an ice cube around each eyeLie back in your chair or on a bed, place sliced cucumber or a wet tea bag over your closed eyes and relax for a few minutesDo eye exercises: blink a few times, focus on objects far and then near you, move your eyes in a circle, keeping your head still, rub the palms of your hands vigorously together and place over your closed eyelids.

Support your body to help you cope with stress

• Have regular mini breaks every 2 hours from sitting or standing where your muscles remain in one position all the time. Breathe deeply, get up and stretch your neck, arms and shoulders, roll your shoulders clockwise and anticlockwise, clasp your hands behind your back and lift your arms, shake your legs, drink herbal tea, look out the window. This will prevent tension headaches and neck muscle spasm.

• Become aware of the basics of ergonomics: invest in a good quality chair that follow the curve of your back, your upper legs should be straight, knees bent, lower legs perpendicular to upper legs, feet comfortably flat on the floor. Elbows, forearms and hands should be in line with the keyboard. Fresh clean air should circulate freely. There should be greenery near you – a pot plant, fresh flowers, your own small herbal garden in a pot.

• Stress busting food tips-

Prevent low blood sugar – it’s a stress attractor! Eat regular, healthy, small meals. Always have fruit, veges, nuts and seeds handy!- Sip away your stress: chamomile, mint, passionflower, lemon balm, ginseng, lavender, valerian herbal teas, together with a spoonful of honey will soothe frazzled nerves- Calming foods: tryptophane boosts the formation of serotonin, the ‘feel good’, calming brain chemical - eat unrefined carbohydrates, nuts and bananas- Energising foods: small amounts of protein (cheese, eggs, chicken, meat) contains the amino acid tryptamine that can give you a boost when stress tires you out. Take small ready prepared portions to work. - Take a daily dose of vitamin B-complex to support your nervous system together with an antioxidant and multivitamin combination (vitamin A, E, C, minerals zinc, selenium, copper, chromium, iron, calcium and magnesium)- Use the herb Ginkgo biloba to boost your concentration and memory- Food for thought: beans / legumes, lean meat, whole grain and enriched cereals, poultry, fish such as trout, salmon, tuna, sardines and mackerel, dairy products, brewer’s yeast, nuts, seeds, fruit, vegetables

• Become quite, focused, aware

Rather than a worry, fear or anger response to triggers: become quiet, focused, aware of your feelings around the stressful experience, consciously relax by slowing down your breathing. When deeply upset, you can’t always change the feeling, but you can slow down and deepen your own breath. Doing this regularly, will teach you to react pro-actively: responding rather than reacting to stress triggers. Use the female tend-and-befriend’ stress response. Women (and female animals form all species) experiencing stress tend to nurture themselves and their young and form bonds with others. Women also have the classical fight-or-flight response under stress, but the tend-and-befriend response seems to take effect during long term chronic stress. Female animals need to protect their young in a stressful situation – as did our ancestors and ourselves even today, when physically threatened. Fleeing too soon might leave a young animal defenseless. So use it, by forming networks and support groups with others. Relax and unwind over a cup of coffee or lunch. It’s a survival mechanism! Men will of course also benefit from the tend-and-befriend response!

• Develop the inner awareness of a soul having a physical experience

Feelings of stress or anxiety may also be your soul's way of telling you to attend to your spiritual needs. The inspiration gained from spirituality is an essential part of stress management. Mind, body, and spirit are inseparable. Establishing a firm connection to your spirit will provide healing for your mind and body. You can deepen your commitment to spirituality through any of the following: creating a sacred space in your home or at work: decorate it with colourful textured cloth, arrange crystals or stones, hang crystals or wind chimes inside an open door or window, look at pictures of your loved ones, a special painting and a burner with aromatherapy oil. Connect with it every day in mindful awareness of your soul’s purpose on earth. Other soul connections: regular participation in church or your preferred spiritually based organisation, read inspirational literature of your preference, write in your journal: your life story, your ancestors’ stories; contemplate your dreams, myths and restore rituals; have a 10-20 minute meditation session every day; use spiritual affirmations and prayers.

By: Dr Arien van der Merwe
Article Directory:
Written by Dr Arien van der Merwe, medical doctor, specialist corporate health & wellness service provider and author of”>Stress Solutions, ‘Relax & Unwind’ a relaxation CD, Health & Happiness Also Training manuals on Wellness/Peer Education, Stress Management and Workplace Wellness. For more info & to order:”" target="_blank">”

Thursday, October 30, 2008

Exercises to Lose Body Fat

Exercises to Lose Body Fat
By Brandon Walsh

Body fat tends to accumulate around the midsection, especially on me. Getting rid of it is a lot harder than gaining it, as most people know.

There is no quick fix, magic pill or magic potion that will allow you to drop weight.

The only thing that really works-short of liposuction surgery-is exercises to lose body fat.

Basically, hard work, determination and buckets of sweat are the only way to achieve your weight loss goals.

But what are the best exercises to lose body fat?

Popular belief has been in years past, that in order to drop weight, you needed to concentrate on aerobic exercise.

While there is certainly nothing wrong with aerobic exercise, since you will lose weight, if you want to lose weight fast, the best exercises to lose body fat are in the resistance training categories.

Your body is like a machine. For instance, if you owned a car, which car would suck more gas-a four cylinder jalopy or an eight cylinder sports car?

The answer is obvious. The sports car can go faster, but it would suck more gas.

Your body works in much the same way.

In order to burn more calories, you need to pack on some muscle.

So in order to build muscle, you have to look at resistance training, and which exercises are best for building muscle.

The Squat

The squat is phenomenal for building muscles.

It works your entire core area (tops of legs to your chest) better than any other exercise known to man. Serious weight lifters rely on the squat heavily to train, and you should too.

If you`re looking for exercises to lose fat, the squat should be your first stop on the weight loss train.

The Lunge and Curl

The lunge by itself is a great tool for building muscle and burning fat, but try doing a lunge with two hand weights in your hands, and doing a curl when you're down in the lunge position.

It's taxing, and far more difficult than it appears.

However, just like the squat, this exercise works a lot of different muscle groups at the same time, which means you not only get the most out of your workout, but your building muscle faster.

And that is good news if you're looking for exercises to lose fat!

Start out with these two fat burning exercises, and go from there.

By using these two fat burning miracle exercises, you'll find that your dropping weight, feeling healthier and more confident every day.

source :

150 ping list

150 ping list

Ping is a computer network tool used to test whether a particular host is reachable across an IP network; it is also used to self test the network interface card of the computer, or as a speed test. It works by sending ICMP “echo request” packets to the target host and listening for ICMP “echo response” replies. Ping estimates the round-trip time, generally in milliseconds, records any packet loss, and prints a statistical summary when finished.
  2. http://api.feedster.comping
  5. http://bblog.comping.php
  6. http://www.bitacoles.netping.php
  14. http://www.blogsnow.comping
  18. http://coreblog.orgping/
  21. http://www.mod-pubsub.orgping.php
  34. http://rpc.technorati.comping
  37. http://thingamablog.sourceforge.netping.php
  40. http://xping.pubsub.comping/
  83. http://bblog.comping.php
source :

Tuesday, October 28, 2008

How to Speed Up Firefox

How to Speed Up Firefox
By Mike Man

Firefox is a great browser. It is the first to give Internet Explorer a run for its money. According to W3Schools, Firefox has over 40 percent of the browser market.

This is due in part to its usability, flexibility and speed. Although Firefox is a fast browser there are ways to make it even faster. We will show you several ways to maximize Firefox's performance.

Disable History Cache

Every time you visit a page Firefox saves the page so when you press the back button the page will display right away. To disable this type "about:config" in the address bar. Do a search for browser.sessionhistory.max_total_viewers. Double-click on browser.sessionhistory.max_total_viewers and change the -1 to 0. Remember that this will slow down how fast pages come up when you press the back button.

Only Keep the Extensions You Need

When you have a lot of extensions in Firefox your computer needs to load the extensions to memory for when needed. The fore extensions you have, the more Firefox becomes. Go to Tools the Add-ons. Remove the extensions that you are not using. There is a possibility that one extension is causing the problem. To see if this is the case, start Firefox in safe mode. Go to the run command in Windows and type "firefox.exe -safe-mode". Once you click on OK, Firefox will start without skins or extensions.

Change the Number of Connections

The more connections you have going out for information the faster the page will load. To increase the amount of connections Firefox uses type "about:config" in the address bar. Find and change the following:

content.interrupt.parsing - true

content.max.tokenizing.time - 2250000

content.notify.interval - 750000

content.notify.ontimer - true

content.switch.threshold - 750000

nglayout.initialpaint.delay - 0

network.http.max-connections - 48

network.http.max-connections-per-server - 16

network.http.max-persistent-connections-per-proxy - 16

network.http.max-persistent-connections-per-server - 8

browser.cache.memory.capacity - 65536

When done restart Firefox and check out the difference.

That's it for this one. With these three tips, Firefox should lean and built for speed.

There is a lot more you can do to tweak Firefox.

These are a few of the big ones.

source :

Substantial Income Opportunity

Substantial Income Opportunity
By Daniel Gebura

Many people have jobs they don't particularly like, many of them are looking for another way to provide themselves with a good living, a way that would prove to be a great substantial income opportunity.

A dream of almost all people is to earn money doing what they like and enjoy income stream coming out of it.

There are many substantial income opportunities out there that will enable you to make extra money that might become a full time income within a years or even months to come.

However if you are looking for income opportunities you need to first establish your goals and decide what kind of lifestyle you want to live in the future and what level of income you expect and finally how much effort you are ready to put into substantial income opportunity to work towards your goals.

Some people get extra jobs to earn extra income, some people decide to open a large business investing loads of money not being quite sure if the business will ever pay off their investments.
Well, maybe these ways work for some people but won't actually give them a freedom as they may have with online substantial income opportunities.

That's right online income opportunity is the easiest one to start with as the Internet developed all over the world and you can use it to your own advantage anytime you want.

Online substantial income opportunity is also the one that gives you flexibility and freedom as you can set your own working hours and do the job without any pressure and interruption.

Now when it comes to find the opportunity right for you, a few most popular of them might be considered:

-Affiliate Marketing
This is substantial income opportunity that enables you to make money selling someone else's products. It's easy and cost effective to start with however it requires some skills and knowledge of how to promote products online and eventually offline in order to generate prospects and close sales.

-MLM Marketing
MLM marketing has proven to be a great income earner for many people all over the world. You can earn money by building a team of people and getting paid from your own and your team efforts.

And here is the trick- the good thing is that MLM marketing has a potential to provide you with substantial, recurring income every month but it's usually takes some time to make it happen.

MLM is all about sponsoring new people to your team and building relationships with them which isn't easy as many of them will be rather skeptical.

That's why mastering some great communication skills is essential to make MLM marketing an substantial income opportunity right for you.

-Online Surveys
You can make money just by giving opinions about various products. There are many companies that will pay you cash or give you points you can redeem for gifts and other goods just for completing simple surveys on their products.

Online surveys maybe won't make you a millions but they can become a solid extra income opportunity. The idea is to sign up for as many survey companies as you can in order to receive more surveys you can participate in.

The above examples are just a few most popular substantial income opportunities from many others you can find online.

It's all about researching, establishing your goals and working towards them by picking the income opportunity that fits your current lifestyle, the amount of time you have on you hands and amount of effort you are ready to put into it

source :

Monday, October 27, 2008

Internet Safety For Teenagers

Internet Safety For Teenagers

By Sam Dunbar

The period when the child becomes an adolescent is an irksome one because it is then when the children start to transform and become more interested in the world.

Therefore, the body and their mentality are all changing and it is sometimes extremely difficult for them to adapt properly.

They need constant reassurance, support and communication and thus, when they cannot retort to their parents, they look for some online company.

The threats teenagers can encounter are countless on the internet because once they start doing research for their school projects online, nothings will be able to restrict their internet hours and access to different sites.

Unless parent take a pro active stance and manage to block the access to some malicious sites your children will be at risk.

For instance, teenagers might want to play games online, use instant messaging, email people or visit all kinds of popular sites.

They might want to get to have online friends and communicate with them through the various means on the Internet.

Therefore, you must make sure as a parent that they only access the trustful sites and not other things.

The following are some safety tips you might want to consider applying.

Set up rules the child has to adhere to. Discuss the hours when the child is allowed to receive internet access and make sure that you are in close vicinity so that you can always show up and make sure the child stays on the right track.

Teach your children how to make use of the Internet access and show them how to access trustworthy pages and thus, they will not wander around the internet searching for things they aren't supposed to access.

The connection to the Internet can be kept in a place the children don't have easy access to. A security setting might also be fitted to the computer to ensure that the children don't wander around and access the Internet through a mistake.

Make sure you let them know that there are some evil people lurking around the internet, willing to ensnare naive children into online traps.

Things about pornographic websites should be included in your discussion with the children.

Also, it is vitally important to not let slip any personal information perpetrators could use in the detriment of yourself and of the children, therefore make sure your children understand the extreme importance of this aspect.

Let them know that spam messages and adware should be ignored and that no emails received from strangers should be opened.

Chatting to strangers on the internet also poses a certain risk and therefore, you need to safeguard the privacy of your personal information