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Sunday, 28 August 2011

Equation helps keep Cars Tyres on the road longer






Jamie Condliffe, contributor

Ever wondered how long it's going to be until you have to change the tyres on your car? Wanted to calculate how far around the world one set of treads could take you? Or even just felt like spending a long weekend doing some complex math?
Studded tyreImage via Wikipedia
The solution could well be here. A team of researchers from the School of Automobile Studies at Tongji University, China, have developed a new equation that predicts the rate at which tyres wear. The results could help save the haulage industry millions of dollars - and they might even ease the strain on your pocket, too.

As you'd expect, their results, published in Journal of Vibration and Control, show that wear is related to the contact area on the road, the physical properties of the rubber, the friction between the road and tyre, any skidding that occurs, and the weight of the vehicle.



More interesting than the equation, though, is the analysis that the team performed to find out which parameters affect tyre wear the most - not least because it might mean you don't need to shell out for new tyres so often.

You won't be surprised to find out that the biggest factors contributing to wear are side slip, speed, and the mass of the car itself. That means that if you want your tread to last longer, you should cut down on the skids and speeding, and kick out any unwanted passengers while you're at it. Other big offenders are low tyre pressures - so keep them pumped up - and ambient temperature.

But maybe the biggest shock is that the car's suspension and the road surface that's driven on make hardly any difference to tyre wear at all. So boy racers whose cars feature suspension lowered so far they have to drive slowly down rough streets to avoid damage have one saving grace - they're caring the planet, four tyres at a time.

The Nine Habits of Highly Healthy & Effective People





by Jonny Bowden 
 
For years, business and motivational gurus have known that there are basic habits that seem to predict professional success and excellence. Books like "The Seven Habits of Highly Effective People", by motivational speaker and business guru Stephen Covey, PhD has sold over 15 million copies alone, to people hungry for the secrets of success.
Book Cover                    Image via Wikipedia
We don't yet have the perfect formula for long life, happiness and physical health, but a little careful distillation of the massive amount of research on health and longevity reveals that cultivating nine basic habits will significantly increase the odds of your living long, well and happily, in a robust, healthy, weight-appropriate body.

1. Eat your vegetables. No kidding. And I'm talking at least 9 servings a day.. Unless you're following the most stringent first stage of the Atkins Diet, you should be able to consume 60-120 grams of carbs a day (depending on your weight and exercise level), and you'd have to eat a stockyard full of spinach to get to that amount. Every major study of long-lived, healthy people shows that they eat a ton of plant foods. Nothing delivers antioxidants, fiber, flavonoids, indoles, and the entire pharmacopia of disease fighting phytochemicals like stuff that grows.

2. Eat fish and/or take fish oil. The Omega-3's found in cold-water fish like salmon deserve the title of "wellness molecule of the century". They lower the risk of heart disease, they lowerblood pressure, they improve mood and they're good for the brain. And if you're pregnant, they may make your kid smarter!

3. Connect. And I'm not talking about the internet. In virtually every study of people who are healthy and happy into their 9th and 10th decade, social connections are one of the "prime movers" in their life. Whether church, family, volunteer work or community, finding something you care about that's bigger than you that you can connect with and that involves other people (or animals) will extend your life, increase your energy, and make you happier. Only always.



4. Get some sun. At least 10-15 minutes three times a week. Interestingly, a recent study of four places in the globe where people lived the longest and were the healthiest noted that all four places were in sunny climates. Sun improves your mood and boosts levels of cancer-fighting, performance-enhancing, bone-strengthening vitamin D, a vitamin most people don't get nearly enough of.

5. Sleep Well. If you're low in energy, gaining weight, grumpy and looking haggard, guess what?- chances are you're not sleeping nearly long enough nor well enough. By sleeping "well", I mean uninterrupted sleep, in the dark, without the television on, in a relaxing environment. Nothing nourishes, replenishes and restarts the system like 7-9 hours sleep. Hint: start by going to bed an hour early. And if you've got a computer in the bedroom, banish it.

6. Exercise every day. Forget this 20 minutes three times a week stuff. Long lived people are doing things like farm chores at 4:30 in the morning! Our Paleolithic ancestors traveled an average of 20 miles per day. Our bodies were designed to move on a regular basis. New studies show that merely 30 minutes a day of walking not only reduces the risk of most serious diseases, but can even grow new brain cells!

7. Practise Gratitude. By making a list of things you're grateful for, you focus the brain on positive energy. Gratitude is incompatable with anger and stress. Practise using your under-utilized "right brain" and spread some love. Focusing on what you're grateful for - even for five minutes a day - has the added benefit of being one of the best stress -reduction techniques on the planet.

8. Drink red wine or eat red grapes. The resveratrol in dark grapes is being studied for its effect on extending life, which it seems to do for almost every species studied. (So does eating about 1/3 less food, by the way.) If you've got a problem with alcohol, you can get resveratrol from grapes, peanuts or supplements. (And if you're a woman, and you choose the alcohol option, make sure you're getting folic acid every day.)

9. Get the sugar out. The number one enemy of vitality, health and longevity is not fat, it's sugar. Sugar's effect on hormones, moods, immunity, weight and possibly even cancer cells is enormous, and it's all negative. To the extent that you can remove it from your diet, you will be adding years to your life and life to your years.

This list may not be perfect and it may not be complete, but it's a start. As my dear grandmother used to say, "Couldn't hurt". Not one of these "habits" will hurt you, all will benefit you, and some may make the difference between life and death.

And it's never too late to start cultivating them.

Enjoy the journey!

Saturday, 27 August 2011

65 million more obese adults in the US and 11 million more in the UK expected by 2030!






The rising prevalence of obesity around the globe places an increasing burden on the health of populations, on healthcare systems and on overall economies. A major challenge for researchers is to quantify the effect of these burdens to inform public policies. Using a simulation model to project the probable health and economic consequences from rising obesity rates in the United States and the United Kingdom, researchers at Columbia University's Mailman School of Public Health and Oxford University forecast 65 million more obese adults in the U. S. and 11 million more in the U.K. by 2030, leading to millions of additional cases of diabetes, heart disease, stroke, and cancer. The findings suggest that medical costs associated with treatment of these preventable diseases in the U.S. alone will increase by $48-66 billion per year.
Picture of an Obese Teenager (146kg/322lb) wit...Image via Wikipedia

The paper, "Health and Economic Burden of the Projected Obesity Trends in the USA and the UK," is part of a series of articles on obesity published in the August 27 issue of Lancet. The research was led by Y. Claire Wang, MD, ScD, Mailman School assistant professor of Health Policy and Management, with colleagues from Oxford University.



To construct historic trends in BMI the researchers analyzed data from two nationally representative surveys: the U.S. National Health and Nutrition Examination Survey (NHANES) from 1988 to 2008, and the Healthy Survey for England (HSE) from 1993 to 2008. The U.S. and U.K. have the highest among the countries belonging to the Organization for Economic Cooperation and Development.
Projecting from these data sets: the researchers predicted the following impacts for the U.S. by 2030:
  • Obesity prevalence among men would rise from 32% in 2008 to approximately 50% and from 35% to between 45% and 52% among women.

  • 7.8 million extra cases of diabetes

  • 6.8 million more cases of and stroke

  • 539,000 additional cases of cancer

  • Annual spending on obesity-related diseases would rise by 13-16%, leading to 2.6% increase in national health spending.

  • Total medical costs associated with treatment of these preventable diseases are estimated to increase by $48-66 billion/year.

For the U.K., researchers predicted the following developments by 2030:
  • among men would increase from 26% to between 41—48%, and among women from 26% to 35-43%.

  • 668 000 more cases of diabetes

  • 461,000 more cases of heart disease and stroke

  • 139,000 additional cases of cancer.

  • In the U.K., annual spending on obesity-related health would increase even more rapidly than in the U.S. due to its older population, rising 25%.

"Many chronic and acute health disorders associated with excess bodyweight burden society—not only by negatively affecting the health-related quality of life but also by incurring significant costs," says Dr. Wang. These stem not only from increased healthcare expenditures but also from worker absenteeism, disability pensions, less productivity at work due to poor health, and earlier retirement."

The new study shows that even a small drop in average body mass index (BMI) would have a major health and economic impacts. They therefore recommend action to promote healthier body weights.

"Taking no action would have the catastrophic consequences described in our study, but a population level decrease in BMI by 1% would avoid as many as 2.4 million cases of diabetes, 1.7 million cases of heart disease and stroke, and up to 127 000 cases of cancer in the U.S.alone."

There are currently 99 million obese individuals in the U.S and 15 million in the U.K. The distribution of obesity is somewhat different in the two nations. In the U.S. about one-quarter of all men are obese regardless of ethnicity. Almost half of black American women (46%) are obese, compared with a third of Hispanic women and 30% of white women. In the U.K., the proportion of obese white men (19%) is slightly higher than black men (17%) and much higher than Asian men (11%). One-third of black women in the U.K. are obese, compared with 1 in 5 white women and 1 in 6 Asian women.

While there is some evidence that the rise in obesity is levelling off in some nations and possibly in the U.S., the jury is still out, says Dr. Wang. "Population weight changes are slow to manifest. Whether or not the U.S. and UK have turned a corner or plateaued will not be clear until survey results over the next few years provide additional data points."

The suggestion that obese people die earlier, thus saving the likely expected social and healthcare costs if that person survives to old age, is also discussed in the paper. However the authors conclude, "Without a doubt, healthcare expenditure is high for elderly people, but these costs should not be used to justify the cost-savings of dying younger, or to suggest that obesity prevention has no benefit."

Provided by Columbia University

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Dark clouds over US and Europe !





WHAT ARE WE TO DO By TAN SRI LIN SEE-YAN

Within the past couple of weeks, the world has changed. From a world so used to the United States playing a key leadership role in shaping global economic affairs to one going through a multi-speed recovery, with the emerging nations providing the source of growth and opportunity. This is a very rapid change indeed in historical time. What happened? First, the convergence of a series of events in Europe (contagion of the open ended debt crisis jolted France and spread to Italy and Spain, forcing the European Central Bank or ECB to buy their bonds) and in the US (last minute lifting of the debt ceiling exposed the dysfunctional US political system, and the Standard & Poor's downgrade of the US credit rating) have led to a loss of confidence by markets across the Atlantic in the effectiveness of the political leadership in resolving key problems confronting the developed world. Second, these events combined with the coming together of poor economic outcomes involving the fragilities of recovery have pushed the world into what the president of the World Bank called “a new danger zone,” with no fresh solutions in sight. Growth in leading world economies slowed for the fourth consecutive quarter, gaining just 0.2% in 2Q'11 (0.3% in 1Q'11) according to the Organisation for Economic Cooperation and Development. The slowdown was marked in the euro area. Germany slackened to 0.3% in 2Q'11 (1.3% in 1Q'1) and France stalled at zero after 0.9% in 1Q'11. The US picked up to 0.3% (0.1% in 1Q'11), while Japan contracted 0.3% in 2Q'11 (-0.9% in 1Q'11).

US construction
A construction worker guides a beam into place in Philadelphia. Picture: AFP Source: AFP
IT’S not always sunny in Philadelphia. The Federal Reserve Bank of Philadelphia has reported severe dark clouds over the area’s factory sector. 

The US slides

Recent data disclosures and revisions showed that the 2008 recession was deeper than first thought, and the subsequent recovery flatter. The outcome: Gross domestic product (GDP) has yet to regain its pre-recession peak. Worse, the feeble recovery appears to be petering out. Over the past year, output has grown a mere 1.6%, well below what most economists consider to be the US's underlying growth rate, a pace that has been in the past almost always followed by a recession. Over the past six-months, the US has managed to eke out an annualised growth of only 0.8%. This was completely unexpected. For months, the Federal Reserve had dismissed the economy's poor performance as a transitory reaction to Japan's natural disaster and oil price increases driven by turmoil in the Middle East. They now admit much stiffer headwinds are restraining the recovery, enough to keep growth painfully slow. Recent sentiment surveys and business activity indicators are consistent with expectations of a marked slowdown in US growth. Fiscal austerity will now prove to be a drag on growth for years. Housing isn't coming back quickly. Households are still trying to rid themselves of debt in the face of eroding wealth. Old relationships that used to drive recoveries seem unlikely to have the pull they used to have. Historically, consumers' confidence had tended to rebound after unemployment peaked. This time, it didn't happen. Unemployment peaked in Oct 2009 at 10.1% but confidence kept on sinking. The University of Michigan's index fell in early August to its lowest level since 1980. Thrown in is concern about the impact of the wild stock market on consumer spending. Indeed, equity volatility is having a negative impact on consumer psychology at a time of already weakening spending.

US growth revised down to 1pc in second quarter. Traders in the oil options pit of the New York Mercantile Exchange - the oil price slipped as US growth was revised down in the second quarter.
Traders in the oil options pit of the New York Mercantile Exchange – the oil price slipped as US growth was revised down in the second quarter. Photo: AP
Three main reasons underlie why the Fed made the recent commitment to keep short-term interest rates near zero through mid-2013: (i) cuts all round to US growth forecasts for 2H11 and 2012; (ii) drop in oil and commodity prices plus lower expectations on the pace of recovery led to growing confidence inflation will stabilise; and (iii) rise in downside risks to growth in the face of deep concern about Europe's ability to resolve its sovereign debt problems. The Fed's intention is at least to keep financial conditions easy for the next 18 months. Also, it helps to ensure the slowly growing economy would not lapse into recession, even though it's already too close to the line; any shock could knock it into negative territory.

The critical key

Productivity in the US has been weakening. In 2Q11, non-farm business labour productivity fell 0.3%, the second straight quarterly drop. It rose only 0.8% from 2Q10. Over the past year, hourly wages have risen faster than productivity. This keeps the labour market sluggish and threatens potential recovery. It also means an erosion of living standards over the long haul. But, these numbers overstate productivity growth because of four factors: (a) upward bias in the data - eg the US spends the most on health care per capita in the world, yet without superior outcomes; (b) government spending on military and domestic security have risen sharply, yet they don't deliver useful goods and services that raise living standards; (c) labour force participation has fallen for years. Taking lower-paying jobs out of the mix raises productivity but does not create higher value-added jobs; and (d) off-shoring by US companies to China for example, but they don't enhance American productivity. Overall, they just overstate productivity. So, the US, like Europe, needs to actually raise productivity at the ground level if they are to really grow and reduce debt over the long-term. The next wave of innovation will probably rely on the world's current pool of scientific leaders - most of whom is still US-based.



US deficit is too large

The US budget deficit is now 9.1% of GDP. That's high by any standard. According to the impartial US Congressional Budget Office (CBO), even after returning to full employment, the deficit will remain so large its debt to GDP will rise to 190% by 2035! What happened? This deficit was 3.2% in 2008; rose to 8.9% in 2010, pushing the debt/GDP ratio from 40% to 62% in 2010. This “5.7% of GDP” rise in the deficit came about because of (i) a fall of “2.6% of GDP” in revenue (from 17.5% to 14.9% of GDP), and (ii) a rise of “3.1% of GDP” in spending (from 20.7% to 23.8% of GDP). According to the CBO, less than one-half of the rise in deficit was caused by the downturn of 2008-2010. Because of this cyclical decline, revenue collections were lower and outlays, higher (due to higher unemployment benefits and transfers to help those adversely affected). They in turn raise total demand and thus, help to stabilise the economy. These are called “automatic stabilisers.” In addition, the budget deficit also worsened because, even at full-employment, revenues would still fall and spending rise. So, the great recession did its damage.

Looking ahead, the Obama administration's budget proposals would add (according to CBO) US$3.8 trillion to the national debt between 2010 and 2020. This would raise the debt/GDP ratio to 90% reflecting limited higher spending, weaker revenues from middle and lower income taxpayers, offset in part by higher taxes on the rich. Even so, these are based on conservative assumptions regarding military spending, no new programmes and lower discretionary spending in “real” terms. No doubt, actual fiscal consolidation would imply much more spending cuts and higher revenues. According to Harvard's Prof M. Feldstein, increased revenues can only come about, without raising marginal tax rates, through what he calls cuts in “tax expenditures,” that is, reforming tax deductions (eg cutting farm subsidies, eliminating deductions for ethanol production, etc). Such a “balanced approach” to resolve the growing fiscal deficit will be hard to come-by given the political paralysis in Washington. Worse, the poisonous politics of the past two months have created a new sort of uncertainty. The tea partiers' refusal to compromise can, at worse, kill off the recovery. The only institution with power to avert danger is the Fed. But printing money can be counter-productive. Fiscal measures are the preferred way to go at this time. Even so, the US fiscal problems will mount beyond 2020 because of the rising cost of social security and medicare benefits. No doubt, fundamental reform is still needed for the long-term health of the US economy.

Eurozone stumbles

Looming large as a risk factor is Europe's long running sovereign debt saga, which is pummelling US and European financial markets and business confidence. So far, Europe's woes and the market turmoil it stirred are worrisome. The S&P 500 fell close to 5% last week extending losses of 15.4% over the previous three weeks, its worse streak of that length in 2 years, and down 17.6% from its 2011 high. The situation in Europe has been dictating much of the global markets' recent movements. The eurozone's dominant service sector was effectively stagnant in August after two years of growth, while manufacturing activity, which drove much of the recovery in the bloc shrank for the first time since September 2009. Latest indicators add to signs the slowdown is spreading beyond the periphery and taking root in its core members, including Germany. The Flash Markit Eurozone Services Purchasing Managers' Index (PMI) fell to 51.5 in August (51.6 in July), its lowest level since September 2009. The PMI, which measures activity ranging from restaurants to banks, is still above “50”, the mark dividing growth from contraction. However, PMI for manufacturing slid to 49.7 the first sub-50 reading since September 2009. Both services and manufacturing are struggling.

Going forward, poor data show neither Germany nor France (together making- up one-half the bloc's GDP) is going to be the locomotive. Indeed, the risks of “pushing” the region over the edge are significant. Germany faces an obvious slowdown and a possible lengthy stagnation.

European financial markets just came off a turbulent two weeks, with investors fearing the debt crisis could spread further if Europe's policy makers fail to implement institutional change and new structural supports for the currency bloc's finances. In the interim, the ECB has been picking up Italian and Spanish bonds to keep borrowing costs from soaring. The action has worked so far, but the ECB is only buying time and can't support markets indefinitely. So far, the rescue bill included 365 billion euros in official loans to Greece, Portugal and Ireland; the creation of a 440 billion euros rescue fund; and 96 billion euros in bond buying by the ECB. Despite this, market volatility and uncertainty prevail. Europe is being forced into an end-game with three possible outcomes: (a) disorderly break-up - possible if the peripherals fail in their fiscal reform or can no longer withstand stagnation arising from austerity; (b) greater fiscal union in return for strict national fiscal discipline; and (c) creation of a more compact and more economically coherent eurozone against contagion; this implies some weaker members will take “sabbatical” from the euro. My own sense is that the end-game will be neither simple nor orderly. Politicians will likely opt for a weak variant of fiscal union. After more pain, a smaller and more robust euro could emerge and avoid the euro's demise. Nobel Laureate Paul Krugman gives a “50% chance Greece would leave and a 10% odds of Italy following.”

Leaderless world

The crisis we now face is one of confidence. Starting with the markets across both sides of the Atlantic and in Japan. This lack of confidence reflected an accumulation of discouraging news, including feeble economic data in the US and Europe, and signs European banks are not so stable. The global rout seems to have its roots in free-floating anxiety about US dysfunctional politics and about euroland's economic and financial stability. Confidence is indeed shaky, already spreading to businesses and consumers, raising risks any fresh shock could be enough to push the US and European economies into recession. Business optimism, at best, is “softish.” Consumers are still deleveraging. Unfortunately, this general lack of confidence in global economic prospects could become a self-fulfilling prophecy. In the end, it's all about politics. The French philosopher Blaise Pascal contends politics have incentives that economics cannot understand. To act, politicians need consensus, which often does not emerge until the costs of inaction become highly visible. By then, it is often too late to avoid a much worse outcome. So, the demand for global leadership has never been greater. But, none is forthcoming not for the US, not from Europe; certainly not from Germany and France, or Britain.

The world is adrift. Unfortunately, it will continue to drift in the coming months, even years. Voters on both sides of the Atlantic need to demand more from their leaders than “continued austerity on autopilot.” After all, in politics, leadership is the art of making the impossible possible.

Former banker, Dr Lin is a Harvard educated economist and a British Chartered Scientist who now spends time writing, teaching and promoting the public interest. Feedback is most welcome; email: starbizweek@thestar.com.my.

How to check if a Web site is safe?





How to check if a Web site is safe



Have you been phished? Whether you use a Mac, Windows, or Linux, iOS or Android, there's a real strong chance that somebody has sent you an e-mail or text message in an attempt to get at your personal information. Data means money, and you're a big ol' dollar sign to the bad guys.

The best recommendation I can offer is to browse smart. That means you ought to always double-check the URL of your banking site, social networking site, and e-mail site before you log in. Most browsers, including Firefox, Chrome, and Internet Explorer, now include a color-change on the left side of the location bar to indicate that the site has been verified as legitimate. It's always a good idea to type in the URL by hand, and to never follow links from an e-mail. Also, checking for HTTPS instead of the less-secure HTTP is a good idea, although HTTPS isn't foolproof.



But what about that link to some ostensibly hilarious video your best friend just posted to Twitter? There are several services you can use to verify a link. Google Safe Browsing is a good place to start. If you type in that URL, you can then enter in a site name or an IP address to find out if it has hosted malware in the past 90 days.

Another similar service is hpHosts. Enter a site into the search box and its database will tell you if the site has been used to distribute malware or phishing attacks. HpHosts gives you more-detailed information than Google Safe Browsing, if you're into that kind of thing. Two other excellent services are Norton Safe Web, from Symantec, and Unmasked Parasites. Pop in the URL, and you're good to go. Or if the site comes back as unsafe, don't go.

Many security suites come with browser add-ons to check links you click on the fly, and those work fairly well at scanning your search results and adding icons to indicate if a link is safe or not. If you don't have a suite, AVG LinkScanner (download for Windows | Mac)is a free add-on that works with both Windows and Mac, and AVG's free Mobilation Android app (download) or Lookout Mobile Security (download) will block malicious links on your Android device.

Sadly, iPhone and iPad users are out of luck. Even though phishing over social networking has been proven to work on iOS devices that haven't been jailbroken, Apple doesn't allow such link-checking apps. Feel free to recommend your favorite in the comments below.

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