Por definição, o ângulo de deflexão é o .

Todas as variáveis utilizadas para receber valores por meio de scanf() devem ser passadas por seus endereços. O que isto significa?

A figura acima representa parte de um levantamento altimétrico por quadriculas para o traçado de curvas de nível. Os valores no interior da quadricula indicam as cotas de cada ponto identificados pelas letras A, B, C e D. Qual a distância que passa a curva de nível de cota 5,0m partindo-se do ponto A para C?

On yer bikes

Nov 13th 2009

Jennifer Quigley-Jones: editorial assistant, The World in 2010

London follows the cycles-for-hire fad

In 2010 Boris Johnson will give London cyclists something to smile about.

The mayor plans to launch a bicycle-hire system modelled on similar ones in Paris, Barcelona and a growing number of other cities around the world. With some 6,000 bikes and 400 docking stations, the scheme, at first covering about 17 square miles (44 square kilometres) of central London, should allow quick and relatively cheap access to rental bikes.

There will be difficulties to overcome. Securing land for bike stations in the busiest parts of London will need strong collaboration between Transport for London (TfL), which is commissioning the scheme, the Royal Parks and the nine boroughs involved. Then there’s the cost: £140m ($229m) over six years. The aim is that over time the project will pay for itself.

BIXI, the company which will provide the bikes and run the programme, has assured TfL that its lab-tested bikes have withstood the equivalent of 15 years’ use; it is offering a five-year or 40,000-mile guarantee. To deter theft, they are fitted with a security gizmo and users will have to pay a credit-card deposit.

A bigger worry may be safety. The bikes will encourage large numbers of new, tentative cyclists to ride—or wobble—onto some of London’s busiest roads. The scheme is expected to generate an extra 40,000 journeys a day.

TfL is supporting numerous cycle-training and safety initiatives throughout London. Plans to have 12 “cycle superhighways” by the end of 2012 should help eventually. Oddly, the rate of accidents appears to decrease as the number of cyclists rises: since 2000 London has had a 107% increase in the number of cycle journeys and a 21% drop in casualties. But drivers in the capital can still reckon on close shaves galore with inexperienced cyclists.

Despite the worries, the goal is to provide a green and healthy way of getting around London—an alternative to the all too frequent misery of the tube and traffic jams. Londoners may agree with President John Kennedy that “Nothing compares to the simple pleasure of a bike ride.”

Source: http://www.economist.com/displaystory.cfm?story_id=14742214

In the text, the expression close shaves on line, means

The giant neighbours are more rivals than partners

Feb 4th 2010

China and India: Prospects for Peace. By Jonathan Holslag. Columbia University Press

For a book about two countries whose most recent war was five decades ago, “Prospects for Peace” seems a quirky subtitle. Jonathan Holslag, a Brussels-based think-tanker, argues that, since China’s swift and bloody humiliation of India in 1962, the neighbours have “tottered at least five times on the verge of war”. But the last time troops massed on the border was in 1986. Bilateral trade has boomed, and hundreds of thousands of Indians and Chinese now visit the other country each year, including a succession of senior politicians toasting a beautiful friendship.

As Mr. Holslag explains, however, the relationship is still marked as much by unremitting strategic mistrust as by burgeoning co-operation. His contribution to a recent flurry of India-China books attempts to reconcile these contradictory trends. His conclusions are rather unsettling.

Most of the other books on the area concentrate inevitably on the implications of the two countries’ economic rise. The simultaneous emergence into the global economy of two countries containing nearly two-fifths of the world’s people is after all an unprecedented phenomenon. Moreover, China’s dominance of global manufacturing seems matched by India’s arrival as an important provider of information-technology and other services. Mr. Holslag quotes Zhu Rongji, a former Chinese prime minister: “You are number one in software. We are number one in hardware…Together we are the world’s number one.” That is India’s misfortune. Hundreds of thousands of Indians work in IT* services whereas manufacturing for export provides China with tens of millions of jobs. Mr. Holslag predicts that India will challenge China’s role as the world’s manufacturer, but that seems far-fetched.

This complementarity has been accompanied by a number of alliances of convenience, most notably in resisting pressure from the rich world to agree to fixed targets for limiting carbon emissions. There was even an agreement in 2006 to work together to avoid bidding up the prices of energy resources in third countries.

The limited effect of that pact, however, is one reason to believe Mr.

Holslag’s prognosis of a “fiercer economic rivalry and more aggressive regional diplomacy”. Another is what Lalit Mansingh, a former Indian diplomat, calls “the ghost at the banquet”: China’s increasing diplomatic and military influence in Asia—and India’s fear of it.

As Mr. Holslag notes, the defeat in 1962 has left a deep suspicion of China in India’s political, academic and diplomatic circles, which is reflected in public opinion. India claims an area of Chinese-held territory in Kashmir the size of Switzerland, while China claims an area three times larger in what is now Indian Arunachal Pradesh. The border dispute remains unresolved. What had lazily been assumed to be the obvious solution—the status quo, in which each country keeps large swathes of territory claimed by the other—seems, if anything, further away than ever. The political difficulties of selling such a deal in India have long been obvious. But China’s renewed harping on its claim in recent years suggests that it in fact does want more than it already has.

* IT – Information Technology.

In the text, quirky means

Em uma folha de estilo (CSS) a maneira CORRETA para modificarmos a tag body é:

Qual dos aços abaixo é considerado padrão 100 em usinabilidade?

On yer bikes

Nov 13th 2009

Jennifer Quigley-Jones: editorial assistant, The World in 2010

London follows the cycles-for-hire fad

In 2010 Boris Johnson will give London cyclists something to smile about.

The mayor plans to launch a bicycle-hire system modelled on similar ones in Paris, Barcelona and a growing number of other cities around the world. With some 6,000 bikes and 400 docking stations, the scheme, at first covering about 17 square miles (44 square kilometres) of central London, should allow quick and relatively cheap access to rental bikes.

There will be difficulties to overcome. Securing land for bike stations in the busiest parts of London will need strong collaboration between Transport for London (TfL), which is commissioning the scheme, the Royal Parks and the nine boroughs involved. Then there’s the cost: £140m ($229m) over six years. The aim is that over time the project will pay for itself.

BIXI, the company which will provide the bikes and run the programme, has assured TfL that its lab-tested bikes have withstood the equivalent of 15 years’ use; it is offering a five-year or 40,000-mile guarantee. To deter theft, they are fitted with a security gizmo and users will have to pay a credit-card deposit.

A bigger worry may be safety. The bikes will encourage large numbers of new, tentative cyclists to ride—or wobble—onto some of London’s busiest roads. The scheme is expected to generate an extra 40,000 journeys a day.

TfL is supporting numerous cycle-training and safety initiatives throughout London. Plans to have 12 “cycle superhighways” by the end of 2012 should help eventually. Oddly, the rate of accidents appears to decrease as the number of cyclists rises: since 2000 London has had a 107% increase in the number of cycle journeys and a 21% drop in casualties. But drivers in the capital can still reckon on close shaves galore with inexperienced cyclists.

Despite the worries, the goal is to provide a green and healthy way of getting around London—an alternative to the all too frequent misery of the tube and traffic jams. Londoners may agree with President John Kennedy that “Nothing compares to the simple pleasure of a bike ride.”

Source: http://www.economist.com/displaystory.cfm?story_id=14742214

The sentence “There will be difficulties to overcome”, means

A velocidade do rotor para o ponto nominal de um motor de indução trifásico de 380 V; 60Hz; 4 pólos; potência de 60 CV com conjugado nominal de 240 Nm é de