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"But, mother, said Dwight, I only _moo-ed_ at him a little." (c) Daily vza3aoa8
2011年12月16日星期五
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2009年5月10日星期日
What's Really in Many 'Healthy' Foods
A lot of Americans think they're eating a healthy diet these days. But it's easy to be fooled by our assumptions and the ways that food manufacturers play on them.
Take chicken. The average American eats about 90 pounds of it a year, more than twice as much as in the 1970s, part of the switch to lower-fat, lower-cholesterol meat proteins. But roughly one-third of the fresh chicken sold in the U.S. is "plumped" with water, salt and sometimes a seaweed extract called carrageenan that helps it retain the added water. The U.S. Department of Agriculture says chicken processed this way can still be labeled "all natural" or "100% natural" because those are all natural ingredients, even though they aren't naturally found in chicken.
Producers must mention the added ingredients on the package -- but the lettering can be small: just one-third the size of the largest letter in the product's name. If you're trying to watch your sodium to cut your risk of high blood pressure, heart attack and stroke, it pays to check the Nutrition Facts label. Untreated chicken has about 45 to 60 mgs of sodium per four-ounce serving. So-called enhanced or "plumped" chicken has between 200 and 400 mgs of sodium per serving, almost as much as a serving of fast-food french fries.
Adding salt water became widespread when big discount stores began selling groceries and wanted to sell chicken at uniform weights and prices. Plumping packaged chicken helps even out the weight. But that means consumers are paying for added salt water at chicken prices -- an estimated $2 billion worth every year, according to the Truthful Labeling Coalition, a group of chicken producers that don't enhance their products.
Makers of enhanced chicken, including some of the biggest U.S. producers, say many consumers prefer it in blind taste tests and that it stays moister. Ray Atkinson, a spokesman for Pilgrim's Pride, says the company sells both enhanced and unenhanced chicken because consumers ask for it. He also notes that even at 330 mg of sodium, the enhanced chicken qualifies for the American Heart Association's mark of approval.
A survey released this week from Foster Farms, a member of the Truthful Labeling Coalition, found that 63% of consumers are unaware of the practice, and 82% believe that salt-water-injected chicken shouldn't carry the all-natural label. The telephone survey polled 1,000 consumers on the West Coast.
Here are some other foods that may not be as healthy as they appear.
Salt substitutes. If you're trying to cut down on salt, check with your doctor before you start using a salt substitute. Most contain potassium chloride, which can exacerbate kidney problems and interact badly with some heart and liver medications.
Artificial Sweeteners. Sugar-free gum, mint and candy have fewer calories and are better for your teeth. But they frequently contain sorbitol, a plant extract that isn't completely absorbed by the body and works as a natural laxative. Consuming a single pack of gum or mints can cause bloating, flatulence, stomach pains and diarrhea in people who are sensitive to it. Some diabetics find that such sugar alcohols, which are sweet but have few calories, can raise their blood sugar. Others include maltitol and xylitol.
Trans fat. There's been a remarkable reduction in these artery-cloggers in processed foods recently. But manufacturers are allowed to round down: Products labeled zero grams of trans fat can have up to 0.49 gram of fat per serving. You could still be consuming significant amounts of trans fat, "especially when the serving size is unrealistic," says Bonnie Taub-Dix, a nutritionist and spokeswoman for the American Dietetic Association, a nonprofit professional organization. If the ingredients include partially hydrogenated oil, hydrogenated oil or shortening, a product isn't completely trans-fat free. And it may have considerable saturated fat as well.
The same rounding principle applies to zero calories, fat and carbohydrates. Walden Farms, which advertises a line of dips, spreads and dressings as "Fat Free, Sugar Free and Calorie Free," says its products do have trace calories and up to 0.49 gram of fat and carbohydrates per serving.
"Wheat bread." This is a meaningless term, since almost all bread is made with wheat. Some manufacturers add to the illusion by using a brown wrapper or darkening bread with brown sugar or molasses. The more healthful stuff is whole wheat, which includes the outer bran and the wheat germ inside, good sources of nutrients and fiber. Check the ingredients. If the first one listed is "enriched wheat flour," you aren't getting much whole grain.
A few bread makers are still displaying the USDA's old Food Pyramid on their packages -- the one that recommended six to 11 servings of bread or pasta a day. That's been replaced by a more individualized pyramid that recommends only six carbohydrate servings, three of which should be whole grains.
Fiber. Companies are adding fiber to all kinds of products -- including yogurt, ice cream and beverages. In many cases, the added fiber comes from purified powders, not the kind of fiber found in whole grains, beans, vegetables and fruits. The latter have been shown to lower cholesterol, reduce the risk of diabetes and heart disease and may cut the risk of colon cancer. But there isn't much evidence that "isolated" fibers like inulin, maltodextrin, oat fiber and polydextrose have the same effect, according to the Center for Science in the Public Interest, a nonprofit consumer-advocacy group. The Nutrition Facts label doesn't differentiate between the kind of fiber counted, so check the ingredients.
"The added fiber is probably better than nothing, but it's not as good as fiber from natural sources like fruits, vegetables and whole grains," says CSPI Executive Director Michael Jacobson.
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Yogurt. The yogurt aisle is dizzy these days with products that promise to reduce your cholesterol, control your blood pressure, protect your digestive health or boost your immune system. In many cases, it's a single ingredient that provides the benefit, and you can find much more of it in other sources. For example, Promise activ SuperShots say they "Help Control Blood Pressure" thanks to 350 mgs of potassium. There's much more potassium in a banana, a cup of spinach or a baked potato. DanActive probiotic dairy drink's immunity-boosting claims stem from its L. casei Immunitas active culture. There's lots of research interest in such probiotics, but for now, the marketing is ahead of the science. The friendly bacteria in DanActive has mainly been shown to fight diarrhea in people taking antibiotics.
Super water. The Center for Science in the Public Interest sued Coca-Cola Co. earlier this year over claims on its VitaminWater beverages. The center argued that the drinks -- with names like "defense," "rescue," "energy" and "endurance" -- are mainly sugar water with 125 calories per bottle. Coke called the lawsuit "frivolous" and said its VitaminWater brands are properly labeled. "Consumers today are savvy, they are educated and they are looking for more from their beverages than simply hydration," said Coke spokesman Scott Williamson.
Government surveys show that most Americans aren't deficient in many of the vitamins supplied in these drinks. If you consume more than you need, the excess gets excreted.
Omega 3. Many foods are adding these essential fatty acids, said to cut the risk of heart disease, cancer and arthritis and help promote brain health. But you can get a lot more from natural foods. You'd need to drink 45 eight-ounce glasses of milk that is fortified with 32 mgs of omega 3 to get as much of these fatty acids as you get in a three-ounce serving of salmon.
Will any of the products mentioned here hurt you? No, but they may not help you as much as manufacturers would like you to think. "Try to buy foods as close to their natural state as possible," says Ms. Taub-Dix.
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2009年5月1日星期五
Three More Anti Aging Skin Care Tips
Here are more anti aging skin care tips. Most people turn to wrinkle creams, pills and even surgery when they want to get rid of wrinkles. Few are aware that there are literally hundreds of things you can do naturally to reduce wrinkles and slow the aging process. Here are three strategies you can try right now.
Weight Fluctuate and Wrinkles
Repeatedly gaining and losing weight will lead to more wrinkles when you are older. Here's what happens. As your skin expands and contracts while you go through your cycles of gaining and losing weight, your skin will become less elastic.
Have tight and taut skin is the key to reducing wrinkles as you age. However, gaining and losing weight makes the skin flabby and much more prone to wrinkling as the years go by.
The reason why you can keep your weight off is because you likely 'diet' well but are not good at changing your lifestyle and habits. Whatever behavior allows you to lose weight, make them a part of your life so the weight stays off.
Wash At Least Twice a Day
Do not wait until before going to be bed to wash your face. Dirt collects overnight while you are sleeping. Even more, dirt collects and enters the pores during the day. Waiting until the evening is not good for your skin.
Using a mild cleanser that isn't hard on the skin, wash at least twice a day, once in the morning and once in the evening. If you can, you may what to consider washing a third time midday. However, if you wear a lot of make this may not be possible.
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Green Tea May Reduce Wrinkles
We now know that aging and wrinkling is accelerated by the increase in free radicals in our body. These free radicals also cause cancer of both organs and the skin. After all, the skin is an organ as well.
We also know that green tea is loaded with antioxidants, which reduce the amount of free radicals in the body. By consuming green tea on a daily basis, you can postpone the onset of wrinkles and greatly reduce your risk of getting various kinds of cancer.
Do not rely on bottled green tea beverages. These go through a good deal amount of processing and the content and quality of antioxidants is unknown. The best thing to do is buy green tea leaves and steep the tea yourself.
Remember, if you are able to lose weight, then you are also able to keep it off. Don't let your efforts go to waste by gaining back weight you have worked hard to lose. Keep your face clean by washing in the morning as well as in the evening. Finally, add a cup of green tea to your daily regimen. Follow these anti aging skin care tips and you will be looking younger in no time.
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When Will We Cure Cancer?
Sooner rather than later, for a surprising number of malignancies. Others, we may just have to live with
Talk about wishful thinking. One might as well ask if there will be a war that will end all wars, or a pill that will make us all good looking. It is also a perfectly understandable question, given that half a million Americans will die this year of a disorder that is often discussed in terms that make it seem less like a disease than an implacable enemy. What tuberculosis was to the 19th century, cancer is to the 20th: an insidious, malevolent force that frightens people beyond all reason--far more than, say, Diabetes or high blood pressure.
The problem is, the "cure" for cancer is not going to show up anytime soon--almost certainly not in the next decade. In fact, there may never be a single cure, one drug that will bring every cancer patient back to glowing good health, in part because every type of cancer, from brain to breast to bowel, is different.
Now for the good news: during the next 10 years, doctors will be given tools for detecting the earliest stages of many cancers--in some cases when they are only a few cells strong--and suppressing them before they have a chance to progress to malignancy. Beyond that, nobody can make predictions with any accuracy, but there is reason to hope that within the next 25 years new drugs will be able to ameliorate most if not all cancers and maybe even cure some of them. "We are in the midst of a complete and profound change in our development of cancer treatments," says Richard Klausner, director of the National Cancer Institute. The main upshot of this change is the sheer number of drugs in development--so many that they threaten to swamp clinical researchers' capacity to test them all.
This welcome boom in cancer drugs owes its beginnings to one of this century's greatest scientific insights: that cancer is caused not by Depression or miasmas or sexual repression, as people at various times have believed, but by faulty genes. Every tumor begins with just one errant cell that has been unlucky enough to suffer at least two, but sometimes several, genetic mutations. Those mutations prod the cell into replicating wildly, allowing it to escape the control that genes normally maintain over the growth of new tissue.
This realization has transformed cancer, in little more than a decade, from an utterly mysterious disease into a disorder whose molecular machinery is largely understood. Now cancer biologists are in the midst of their second epiphany: the recognition that tumors evolve, in Darwinian fashion, as each succeeding generation of cancer cells accumulates genetic mutations. "Survival of the fittest applies to cancer cells," says Richard Schilsky, associate dean for clinical research at the University of Chicago. "We now think of cancer not as a disease but as a genetic process."
This new view has sparked innovations that will manage the process and keep it from killing large numbers of people. "We are going to see a real shift from diagnosis and treatment to prediction and prevention," declares California surgeon Susan Love, author of Dr. Susan Love's Breast Book. Indeed, if all goes well with current clinical trials, women at high risk for breast cancer will soon be able to be screened with a device that removes a sample of breast cells through the nipple. If any cells show signs of the early mutations that lead to cancer, doctors can suggest the drug tamoxifen, which is believed to reduce the risk of breast cancer by suppressing precancerous cells. Drugs with fewer side effects that can also prevent Breast Cancer are already in the pipeline.
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Within five years, early detection will be available for many other types of cancer as well. A stool sample will be all that is needed to search for colon-cancer cells on their way to becoming tumors, and drugs like the new COX-2 inhibitors, which are improved versions of pain killers, can prevent those precancerous cells from progressing. By the end of the next decade, a simple blood test could alert doctors to a wide variety of cancer precursors.
Treatments for more advanced cancers, however, are farther over the horizon than anybody can see. What is clear is that oncologists must take a page from aids treatment and use a cocktail of drugs with very different modes of action to outsmart tumors that have already begun to spread or metastasize.
That's because a tumor is made up of a hodgepodge of cells containing different genetic mutations, each of which allows it to wreak a different brand of havoc. Some mutations spur rapid growth; others prod nearby blood vessels into sprouting new capillaries; still others send cancer cells out into the bloodstream, where they can seed new tumors. Within 10 years, predicts Robert Weinberg, a cancer biologist at the Whitehead Institute in Cambridge, Mass., "we will analyze the mutant genes and then tailor-make a treatment [for] that particular tumor."
One day there will be drugs to trip up a cell at each of the steps it takes on the path to malignancy. A patient with lung cancer, say, might undergo gene therapy, breathing in genetically altered cold viruses that don't cause infection but instead act as miniature delivery vans carrying copies of the p53 gene. Good copies of this gene, which is mutated in many cancers, can force some cancer cells to commit suicide. The effects of p53 could be bolstered with antibodies that slow tumors by attaching to the surface of cancer cells and gumming up their ability to take over the body's growth factors, the specialized proteins that promote cell reproduction.
If a tumor has acquired the mutations for spreading, the doctor of the future may call on matrix metaloproteinase inhibitors, a new kind of drug that can be taken orally to block the enzymes a tumor uses to break down the cells of surrounding tissue and invade it. Vaccines cobbled together from whole cancer cells or bits and pieces of those cells have been shown to boost the body's immune system, helping it recognize and kill tumors on its own. "This was all a dream five years ago," marvels John Minna, director of the Hamon Center for Therapeutic Oncology Research at the University of Texas Southwestern Medical Center in Dallas.
Also close to reality are the so-called antiangiogenic factors, relatively nontoxic compounds that inhibit the growth of new capillaries. The idea behind this new class of drugs is that tumors cannot grow bigger than a few hundred thousand cells--about the size of a peppercorn--without growing their own blood-supply system. Researchers and patients, not to mention the owners of stock in half a dozen biotech companies, are eagerly awaiting results of clinical trials of antiangiogenic factors, which might be used in combination with chemotherapy to knock down big tumors and then prevent any surviving tumors from growing enough to do further damage.
The assumption behind many of these futuristic scenarios is an idea that most researchers have begun to embrace but that many patients will undoubtedly find difficult to accept. That is the prediction that certain cancers may require treatment for the rest of a patient's long life. Coming out of a century that declared war on the disease, a century that felt the only reasonable response to a tumor was to annihilate it, this may be hard to imagine. But turning cancer into a controllable condition is not so different from treating high blood pressure or Diabetes. "I don't think curing cancer is the goal," says Ellen Stovall, executive director of the National Coalition for Cancer Survivorship. Instead, she says, "it should be helping people live as long and as well as they can."
No, we probably won't cure all forms of cancer in the 21st century. But we may very well learn to live with them.
science writer Shannon Brownlee's work has appeared in the New York Times, the New Republic and the Atlantic Monthly
___________________________________________________________
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When Will We Cure Cancer?
Sooner rather than later, for a surprising number of malignancies. Others, we may just have to live with
Talk about wishful thinking. One might as well ask if there will be a war that will end all wars, or a pill that will make us all good looking. It is also a perfectly understandable question, given that half a million Americans will die this year of a disorder that is often discussed in terms that make it seem less like a disease than an implacable enemy. What tuberculosis was to the 19th century, cancer is to the 20th: an insidious, malevolent force that frightens people beyond all reason--far more than, say, Diabetes or high blood pressure.
The problem is, the "cure" for cancer is not going to show up anytime soon--almost certainly not in the next decade. In fact, there may never be a single cure, one drug that will bring every cancer patient back to glowing good health, in part because every type of cancer, from brain to breast to bowel, is different.
Now for the good news: during the next 10 years, doctors will be given tools for detecting the earliest stages of many cancers--in some cases when they are only a few cells strong--and suppressing them before they have a chance to progress to malignancy. Beyond that, nobody can make predictions with any accuracy, but there is reason to hope that within the next 25 years new drugs will be able to ameliorate most if not all cancers and maybe even cure some of them. "We are in the midst of a complete and profound change in our development of cancer treatments," says Richard Klausner, director of the National Cancer Institute. The main upshot of this change is the sheer number of drugs in development--so many that they threaten to swamp clinical researchers' capacity to test them all.
This welcome boom in cancer drugs owes its beginnings to one of this century's greatest scientific insights: that cancer is caused not by Depression or miasmas or sexual repression, as people at various times have believed, but by faulty genes. Every tumor begins with just one errant cell that has been unlucky enough to suffer at least two, but sometimes several, genetic mutations. Those mutations prod the cell into replicating wildly, allowing it to escape the control that genes normally maintain over the growth of new tissue.
This realization has transformed cancer, in little more than a decade, from an utterly mysterious disease into a disorder whose molecular machinery is largely understood. Now cancer biologists are in the midst of their second epiphany: the recognition that tumors evolve, in Darwinian fashion, as each succeeding generation of cancer cells accumulates genetic mutations. "Survival of the fittest applies to cancer cells," says Richard Schilsky, associate dean for clinical research at the University of Chicago. "We now think of cancer not as a disease but as a genetic process."
This new view has sparked innovations that will manage the process and keep it from killing large numbers of people. "We are going to see a real shift from diagnosis and treatment to prediction and prevention," declares California surgeon Susan Love, author of Dr. Susan Love's Breast Book. Indeed, if all goes well with current clinical trials, women at high risk for breast cancer will soon be able to be screened with a device that removes a sample of breast cells through the nipple. If any cells show signs of the early mutations that lead to cancer, doctors can suggest the drug tamoxifen, which is believed to reduce the risk of breast cancer by suppressing precancerous cells. Drugs with fewer side effects that can also prevent Breast Cancer are already in the pipeline.
health Top Tips nutrition Love lifestyle Happiness Weight Loss
Within five years, early detection will be available for many other types of cancer as well. A stool sample will be all that is needed to search for colon-cancer cells on their way to becoming tumors, and drugs like the new COX-2 inhibitors, which are improved versions of pain killers, can prevent those precancerous cells from progressing. By the end of the next decade, a simple blood test could alert doctors to a wide variety of cancer precursors.
Treatments for more advanced cancers, however, are farther over the horizon than anybody can see. What is clear is that oncologists must take a page from aids treatment and use a cocktail of drugs with very different modes of action to outsmart tumors that have already begun to spread or metastasize.
That's because a tumor is made up of a hodgepodge of cells containing different genetic mutations, each of which allows it to wreak a different brand of havoc. Some mutations spur rapid growth; others prod nearby blood vessels into sprouting new capillaries; still others send cancer cells out into the bloodstream, where they can seed new tumors. Within 10 years, predicts Robert Weinberg, a cancer biologist at the Whitehead Institute in Cambridge, Mass., "we will analyze the mutant genes and then tailor-make a treatment [for] that particular tumor."
One day there will be drugs to trip up a cell at each of the steps it takes on the path to malignancy. A patient with lung cancer, say, might undergo gene therapy, breathing in genetically altered cold viruses that don't cause infection but instead act as miniature delivery vans carrying copies of the p53 gene. Good copies of this gene, which is mutated in many cancers, can force some cancer cells to commit suicide. The effects of p53 could be bolstered with antibodies that slow tumors by attaching to the surface of cancer cells and gumming up their ability to take over the body's growth factors, the specialized proteins that promote cell reproduction.
If a tumor has acquired the mutations for spreading, the doctor of the future may call on matrix metaloproteinase inhibitors, a new kind of drug that can be taken orally to block the enzymes a tumor uses to break down the cells of surrounding tissue and invade it. Vaccines cobbled together from whole cancer cells or bits and pieces of those cells have been shown to boost the body's immune system, helping it recognize and kill tumors on its own. "This was all a dream five years ago," marvels John Minna, director of the Hamon Center for Therapeutic Oncology Research at the University of Texas Southwestern Medical Center in Dallas.
Also close to reality are the so-called antiangiogenic factors, relatively nontoxic compounds that inhibit the growth of new capillaries. The idea behind this new class of drugs is that tumors cannot grow bigger than a few hundred thousand cells--about the size of a peppercorn--without growing their own blood-supply system. Researchers and patients, not to mention the owners of stock in half a dozen biotech companies, are eagerly awaiting results of clinical trials of antiangiogenic factors, which might be used in combination with chemotherapy to knock down big tumors and then prevent any surviving tumors from growing enough to do further damage.
The assumption behind many of these futuristic scenarios is an idea that most researchers have begun to embrace but that many patients will undoubtedly find difficult to accept. That is the prediction that certain cancers may require treatment for the rest of a patient's long life. Coming out of a century that declared war on the disease, a century that felt the only reasonable response to a tumor was to annihilate it, this may be hard to imagine. But turning cancer into a controllable condition is not so different from treating high blood pressure or Diabetes. "I don't think curing cancer is the goal," says Ellen Stovall, executive director of the National Coalition for Cancer Survivorship. Instead, she says, "it should be helping people live as long and as well as they can."
No, we probably won't cure all forms of cancer in the 21st century. But we may very well learn to live with them.
science writer Shannon Brownlee's work has appeared in the New York Times, the New Republic and the Atlantic Monthly
___________________________________________________________
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Sexual song lyrics linked to early sex
Teens who prefer popular songs with degrading sexual references are more likely to engage in intercourse or in pre-coital activities, U.S. researchers say.
Dr. Brian A. Primack of the University of Pittsburgh School of Medicine says the study demonstrates that, among this sample of young adolescents, high exposure to lyrics describing degrading sex in popular music was independently associated with higher levels of sexual behavior. In fact, exposure to lyrics describing degrading sex was one of the strongest associations with sexual activity.
Surveys were completed by 711 ninth-grade students at three large U.S. urban high schools. The participants were exposed to more than 14 hours each week of lyrics describing degrading sex. About one-third said they had previously been sexually active.
The study, scheduled to be published in the April issue of the American Journal of Preventive Medicine, says those with the most exposure to the lyrics describing degrading sex were more than twice as likely to have had sexual intercourse, compared to those with the least exposure.
The relationship between exposure to lyrics describing degrading sex and sexual experience held equally for both young men and women.
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2009年4月22日星期三
Web Conferencing Tool Reduce Your Communication Costs
For most people in Business, meetings are a necessary evil. Stop for a moment and consider how much hosting or attending meetings cost your Business and you may be in for a surprise; precious time spent traveling to and from the meeting location, travel expenses, and in some cases the hire of the meeting facility. Now imagine you could attend that meeting without having to leave your office or Home. How much time and money would save over a week, a month or a year? It soon adds up.
The cost savings associated with web conferencing are well documented. Less time and money are spent on traveling, there is no need to hire meeting facilities and staff can focus on doing their jobs well instead of scheduling meetings.
Save On Traveling Expenses
Travel does not come cheap. Whether it's national or international or by air, land or sea there will always be a cost implication for your Business; air tickets, parking tolls, hotel accommodation - all these costs will affect your bottom line.
Web conferencing reduces the need for travel. Face to face meetings can be conducted via the web, from multiple geographic locations. Airport delays, flight cancellations, traffic jams on the freeway - all these irritations are not only affecting your blood pressure but are costing your company money, too. All that time wasted while you wait for your flight to be called or the jam to clear is money down the drain. Web conferencing cuts out not just the frustrations but also the financial price of wasting time.
Saving Time Equals Saving Money
It's not just travel delays that waste time and costs money. Time is spent organizing meetings and getting busy colleagues together in the same place on the same day can be a complicated task. Someone within your organization is having to spend time pulling it all together. This is time that could be better spent generating sales and income for your Business.
Web conferencing allows your workforce to work smarter. With web conferencing, a meeting that before may have taken a member of staff out the office for several days, can be concluded in a matter of hour, freeing up extra time. A few extra hours in the week to get the job done is something most employees would appreciate.
Work Smarter And Reduce Costs
Document sharing is one of the many facilities available through web conferencing. Documents can be viewed simultaneously by individuals, regardless of where they are located. Projects can be completed more quickly and more accurately. Documents can be updated in real time and colleagues can edit them together. In the absence of web conferencing, this form of collaboration would require an element of travel, costing the Business time and money.
There is a personal upside for employees who have their Business travel reduced, too. Less time spent traveling for work means they have more time at home with their families and staff who are happier in their Home lives are likely to be more productive during their working hours.
Diane Parker is a freelance writer and technology enthusiast providing valuable information including: web conferencing software, choosing a web conferencing tool and internet conferencing.
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2009年4月19日星期日
Basic Video Conferencing
What is Video Conferencing: Video conferencing is the integration of video, audio and peripherals to enable two or more people to communicate simultaneously over some type of telecommunications lines. By video conferencing you are transmitting synchronized images and verbal communications between two or more locations in lieu of them being in the same room.
Video conferencing ingredients: The main ingredients of successful video conferencing are video cameras, microphones, appropriate computer software and computer equipment and peripherals that will integrate with the transmission lines to relay the information.
How video conferencing works: The analog information recorded by the microphones and cameras is broken down into discreet units, translating it to ones and zeros. A Codec encodes the information to a digital signal that can then be transmitted to a codec at the other end, which will retranslate these digital signals back into analog video images and audio sounds.
In the earlier days, video conferencing was very much expensive than today. Some time back video conferencing was used by T1, ATM and ISDN lines. These all process were very costly for video conferencing. Since internet is very cheap and it is a very good medium for video conferencing. The TCP/IP connections of the Internet are much less expensive and can carry large quantities of information for video conferencing, including video packets for conferencing, relatively easily. Because of this, video conferencing has become much more prevalent in small Businesses and in desktop packages that can be set up with software for computer-to-computer networking.
The problem faced was in video conferencing was that when we convert analog to digital for transmission then it is the loss in clarity of image. The most important factor in video conferencing is the compression ratio. The higher the compression ratio, the more quickly the information is capable of being transmitted. In many cases, however, this also means some loss in clarity or audio/video quality.
Advantages of video conferencing: Using video conferencing you can communicate with whole groups of people at once either through networking a group of computers or by form of broadcast. This is a huge step forward for both companies and for schools. video conferencing is very useful for students in their studies. Students can enjoy learning this way much more than from a textbook. Informed people can talk to classes and help them learn, where otherwise they wouldn't be able to because of time and distance restrictions. This is also a bonus for children who have different learning styles. The more visual types who understand better when they can see what they're working with.
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一元钱那去了？之答案
一元钱那去了？之答案
答案：27+3=30
27+2，没有任何意义，这两个数字根本不能相加。道理很简单，27是什么，是25元的实际房费和服务生藏起的2元的总和。里面已经包含2了，再加2就说不通了。呵呵，就是这么简单！
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一元钱那去了？
一元钱那去了？
有3个人去投宿,一晚30元.三个人每人掏了10元凑够30元交给了老板. 后来老板说今天优惠只要25元就够了,拿出5元命令服务生退还给他们, 服务生偷偷藏起了2元, 然后,把剩下的3元钱分给了那三个人,每人分到1元.这样,一开始每人掏了10元,现在又退回1元,也就是10-1=9,每人只花了9元钱, 3个人每人9元,3 X 9 = 27 元 + 服务生藏起的2元=29元，还有一元钱去了哪里？？？此题在新西兰面试的时候曾引起巨大反响.
本人的下一篇博文会给出答案！
有3个人去投宿,一晚30元.三个人每人掏了10元凑够30元交给了老板. 后来老板说今天优惠只要25元就够了,拿出5元命令服务生退还给他们, 服务生偷偷藏起了2元, 然后,把剩下的3元钱分给了那三个人,每人分到1元.这样,一开始每人掏了10元,现在又退回1元,也就是10-1=9,每人只花了9元钱, 3个人每人9元,3 X 9 = 27 元 + 服务生藏起的2元=29元，还有一元钱去了哪里？？？此题在新西兰面试的时候曾引起巨大反响.
本人的下一篇博文会给出答案！
___________________________________________________________
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The History of Video Conferencing
The recent terrorist attacks here in the US have caused many companies and individuals to rethink how they want to market to and work with others. As a result, web-enabled presentations and or collaborations are finally coming of age - the technology works with a minimum of hassle, it's an efficient way to give marketing presentations, hold meetings, provide training and do product demonstrations. The cost savings can be significant, especially when contrasted with all of the burdened costs of holding conventional meetings; i.e. travel, hotel, transportation, facilities and "time out of the office issues." Here is a quick primer on some baseline issues to consider when weighing the effectiveness of virtual marketing presentations and meetings.
1. There are a broad number of vendors, although the "virtual presentation and meeting" market segment has undergone consolidation in the last few years. I'd recommend assessing these four market leaders: www.webex.com (well established with diversified terms of services), www.placeware.com (corporate focused), www.centra.com (provides a good client plug in that enables Voice over IP ("voip") communications, www.raindance.com (emphasizes teleconferencing).
2. PC configuration, Internet access and firewall issues all need to be considered when your assessing the effectiveness of this process and technology. Port settings need to be "tuned" or optimized, the PC must have multimedia capabilities if your using voip, just about any speed of internet connection will work, but the experience for the attendee can vary depending on the connection speeds and how "heavy" your presentation is with graphics.
3. Web presentations offer a lower cost model versus traditional presentations or meetings, but there are burdened costs for web-enabled marketing - phone conferencing can be anywhere from $.15-35 per minute per user, presentation uploads for a standard power point presentation (which is the defacto app for virtual presentations), can cost $10-30. per presentation, costs per attendee can vary tremendously but average $50-500. per session, depending upon the number of users.
4. One of the most expensive parts of virtual meetings is always the teleconferencing component. All of the market leaders have some VOIP component (voice over IP) but most are not publicizing this technology or service, as they don't want to cannibalize a significant contribution to their revenue streams. One exception is Centra - they are offering voip integrated services with their standard web presentations or meetings. The audio quality is good, analogous to voice quality of a standard Cell Phone call - but there is a client download (small under 250K) to deal with and you must have a multi-media enabled PC.
5. Some web-enabled presentation challenges include the need to keep people involved - you can do this easily by leveraging the chat capabilities, dynamic polling, and standard Q&A components built into the application. The higher their interest level (as in real world meetings) the better your meeting or presentation will be.
6. Marketing presentations can be easily archived and made available to others on a 24/7 basis - this archiving can include the standard presentation, enhanced with video or audio components, depending on the sophistication of your presentation. Be prepared to pay an extra charge for this - but the marketing ROI can be significant, especially when you factor in how little most companies charge for an archiving service versus your front end costs.
7. Virtual marketing enables a whole set of web-enabled processes - you will have the ability to easily capture your prospect/customer's e-mail address and standard contact points via a registration process, involve them and capture preferences via polling in your presentations and "push" follow up communications during your presentation/meeting or later. But, it's very important to include standard "privacy" statements in your materials and adhere to them as you move forward through your Business processes.
8. How does video conferencing impact your assessments of web-enabled presentations or collaborations? This depends on your budget, number of people attending the presentation, presenter and attendee locations and other intangible that are specific to your Business. In general, video conferencing works better for very small (under five people) presentations or meetings, due to some of the inherent challenges of this medium.
___________________________________________________________
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克林顿绯闻
克林顿绯闻
一日，希拉莉在白宫的一块雪地上发现几个用尿写的字，"希拉莉是个丑八怪"。希拉莉大为震惊，立刻叫来她的私人秘书，限令他在三天内查出是谁干的。三天之后，私人秘书来见希拉莉，"夫人，我给您带来了一个好消息，一个坏消息，以及一个非常坏的消息"。希拉莉想了一下说："先告诉我好消息吧"。"好消息是我已经查出来是谁干的了"，秘书说。希拉莉急忙问："是谁？"秘书说："这就是我要告诉你的坏消息。通过专家的化验，那是克林顿总统的尿样。"希拉莉非常生气，不过想到还有一个非常坏的消息没听，就强压住怒火，问到："快告诉我那个非常坏的消息"。"通过对笔迹的分析，是莫尼卡-莱温斯基写的"
一日，希拉莉在白宫的一块雪地上发现几个用尿写的字，"希拉莉是个丑八怪"。希拉莉大为震惊，立刻叫来她的私人秘书，限令他在三天内查出是谁干的。三天之后，私人秘书来见希拉莉，"夫人，我给您带来了一个好消息，一个坏消息，以及一个非常坏的消息"。希拉莉想了一下说："先告诉我好消息吧"。"好消息是我已经查出来是谁干的了"，秘书说。希拉莉急忙问："是谁？"秘书说："这就是我要告诉你的坏消息。通过专家的化验，那是克林顿总统的尿样。"希拉莉非常生气，不过想到还有一个非常坏的消息没听，就强压住怒火，问到："快告诉我那个非常坏的消息"。"通过对笔迹的分析，是莫尼卡-莱温斯基写的"
___________________________________________________________
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死！我也要死在床上！
死！我也要死在床上！
老公出了趟差，一身疲惫地回到家中。不知什么原因，老婆今天对床上运动表现出极大的爱好，主动提出做爱的要求。老公说：今天不行了，我实在太累了，明天吧。说完从床上起身去洗澡．老公洗完热水澡，精神有些恢复（"激爽"的效果果然不错噢），看到床上风情万种的老婆，顿时来了兴致。运动的间歇，老婆问：你不是累了吗？老公（一脸庄重）：死！我也要死在床上！唯一坚持的体育运动在床上，老公揉搓着老婆柔软的乳房，忽然心生感慨："他妈的，结婚以后只有这项体育运动坚持下来了！"
老公出了趟差，一身疲惫地回到家中。不知什么原因，老婆今天对床上运动表现出极大的爱好，主动提出做爱的要求。老公说：今天不行了，我实在太累了，明天吧。说完从床上起身去洗澡．老公洗完热水澡，精神有些恢复（"激爽"的效果果然不错噢），看到床上风情万种的老婆，顿时来了兴致。运动的间歇，老婆问：你不是累了吗？老公（一脸庄重）：死！我也要死在床上！唯一坚持的体育运动在床上，老公揉搓着老婆柔软的乳房，忽然心生感慨："他妈的，结婚以后只有这项体育运动坚持下来了！"
___________________________________________________________
好玩贺卡等你发，邮箱贺卡全新上线！
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标语牌
标语牌
母女二人去游泳池游泳，女儿跳水时，游泳衣不慎破裂。母亲赶快拿起泳池边儿的标语牌给女儿遮挡，人们看了标语牌后禁不住大笑。标语牌上写道：危险，深2米，熟练者使用。母亲赶快把标语牌调了个儿，这回，人们更是大笑不止，背面是：男性专用，进前请脱衣。尴尬的母亲又拿了另一块标语牌一看，上写：大人30元，儿童10元，20名以上半价。于是马上又换了一块儿，看后差一点没晕过去，标语牌写的是：营业时间早9时－晚10时。看着笑得快背过气的人们，母亲唯一的希望寄托在最后一块儿标语牌了，可是当她看到标语牌后，她真的晕过去了，标语牌的内容是：此处是共用区域，为了他人的身体健康，请保持清洁。
母女二人去游泳池游泳，女儿跳水时，游泳衣不慎破裂。母亲赶快拿起泳池边儿的标语牌给女儿遮挡，人们看了标语牌后禁不住大笑。标语牌上写道：危险，深2米，熟练者使用。母亲赶快把标语牌调了个儿，这回，人们更是大笑不止，背面是：男性专用，进前请脱衣。尴尬的母亲又拿了另一块标语牌一看，上写：大人30元，儿童10元，20名以上半价。于是马上又换了一块儿，看后差一点没晕过去，标语牌写的是：营业时间早9时－晚10时。看着笑得快背过气的人们，母亲唯一的希望寄托在最后一块儿标语牌了，可是当她看到标语牌后，她真的晕过去了，标语牌的内容是：此处是共用区域，为了他人的身体健康，请保持清洁。
___________________________________________________________
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女生的笑话
女生的笑话
她本人长得很漂亮，而且身材也比较丰满，看起来蛮成熟的，有一次去网吧上网，被旁边的一个男的看上了，那男的偷看了她的QQ号，然后还加了她。其实她已经知道是旁边的男生加的她，那男的跟她聊了会，又要视屏，视屏了一会，问她多大了，MM说32，男生说，不是吧，是23还差不多，MM咬定是32，那男的又问，那你孩子呢，MM说孩子去上学了，那男的不信，这时好戏就上演了。MM掏出手机给另一个男同学打电话，让他过来，并且说"一会你来了，就这样这样......过了10分钟，只见一个20多的大男生，背着书包，胡子还没刮，一进网吧就冲到MM面前说："妈妈，我放学回来啦~！"旁边的那男的当时就傻了……。
她本人长得很漂亮，而且身材也比较丰满，看起来蛮成熟的，有一次去网吧上网，被旁边的一个男的看上了，那男的偷看了她的QQ号，然后还加了她。其实她已经知道是旁边的男生加的她，那男的跟她聊了会，又要视屏，视屏了一会，问她多大了，MM说32，男生说，不是吧，是23还差不多，MM咬定是32，那男的又问，那你孩子呢，MM说孩子去上学了，那男的不信，这时好戏就上演了。MM掏出手机给另一个男同学打电话，让他过来，并且说"一会你来了，就这样这样......过了10分钟，只见一个20多的大男生，背着书包，胡子还没刮，一进网吧就冲到MM面前说："妈妈，我放学回来啦~！"旁边的那男的当时就傻了……。
___________________________________________________________
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想跟我上床吗？
想跟我上床吗？
话说某位女士一时兴起，买了一只母鹦鹉。没想到带回家里，它说的第一句话就是："想跟我上床吗？"女士一听，心想：坏了，外人还以为这话是我教的呢，这不把我的淑女形象全给毁了。于是她想尽办法，想交那只鹦鹉说些高雅的东西，可是那只母鹦鹉算是铁了心，只会说一句话："想跟我上床吗？"……怎么办呢？
在那位女士失去主张的时候，听说神父那里也养了一只鹦鹉（公的），而且那只鹦鹉，不但不讲粗话，反而是个虔诚的教徒，每天大部分时间里都在祷告。于是那位女士去找神父求助。神父明白她的来意之后，面色微难的说："这个，很难办呀，其实那只鹦鹉，我也并没有刻意的教它什么，它之所以这么虔诚，也可能是长期在此受熏陶的缘故吧。"神父见女士很失落，便说道："这样吧，你把那只鹦鹉带到我这里来，我把它们放在一起。希望经过一段时间，你那只鹦鹉能够被感化。我只能做这些了，有没有效果，就看神的旨意了……"女士一听，也只能这样了，不是有句话叫：近朱者赤吗？试试吧。
于是她把鹦鹉带到神父那里。神父依照诺言把两只鹦鹉放在了一起。开始母鹦鹉还有些拘谨，看那只公鹦鹉在笼子的一角，默默的祷告，还真不忍心打扰。可是她还是管不住自己，终于朗声说道："想跟我上床吗？"公鹦鹉听到这话，停止了祷告，转身看了看母鹦鹉，忽然泪如雨下："感谢上帝，我祷告这么多年的愿望终于实现了……"
话说某位女士一时兴起，买了一只母鹦鹉。没想到带回家里，它说的第一句话就是："想跟我上床吗？"女士一听，心想：坏了，外人还以为这话是我教的呢，这不把我的淑女形象全给毁了。于是她想尽办法，想交那只鹦鹉说些高雅的东西，可是那只母鹦鹉算是铁了心，只会说一句话："想跟我上床吗？"……怎么办呢？
在那位女士失去主张的时候，听说神父那里也养了一只鹦鹉（公的），而且那只鹦鹉，不但不讲粗话，反而是个虔诚的教徒，每天大部分时间里都在祷告。于是那位女士去找神父求助。神父明白她的来意之后，面色微难的说："这个，很难办呀，其实那只鹦鹉，我也并没有刻意的教它什么，它之所以这么虔诚，也可能是长期在此受熏陶的缘故吧。"神父见女士很失落，便说道："这样吧，你把那只鹦鹉带到我这里来，我把它们放在一起。希望经过一段时间，你那只鹦鹉能够被感化。我只能做这些了，有没有效果，就看神的旨意了……"女士一听，也只能这样了，不是有句话叫：近朱者赤吗？试试吧。
于是她把鹦鹉带到神父那里。神父依照诺言把两只鹦鹉放在了一起。开始母鹦鹉还有些拘谨，看那只公鹦鹉在笼子的一角，默默的祷告，还真不忍心打扰。可是她还是管不住自己，终于朗声说道："想跟我上床吗？"公鹦鹉听到这话，停止了祷告，转身看了看母鹦鹉，忽然泪如雨下："感谢上帝，我祷告这么多年的愿望终于实现了……"
___________________________________________________________
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