Tuesday, November 25, 2008

IBM Plans 'Brain-Like' Computers

IBM has announced it will lead a US government-funded collaboration to make electronic circuits that mimic brains.

Part of a field called "cognitive computing", the research will bring together neurobiologists, computer and materials scientists and psychologists. As a first step in its research the project has been granted $4.9m (£3.27m) from US defence agency Darpa. The resulting technology could be used for large-scale data analysis, decision making or even image recognition.

"The mind has an amazing ability to integrate ambiguous information across the senses, and it can effortlessly create the categories of time, space, object, and interrelationship from the sensory data," says Dharmendra Modha, the IBM scientist who is heading the collaboration.

"There are no computers that can even remotely approach the remarkable feats the mind performs," he said. "The key idea of cognitive computing is to engineer mind-like intelligent machines by reverse engineering the structure, dynamics, function and behaviour of the brain."

Monday, November 24, 2008

The Water Cycle

Earth's water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a "cycle," there is no beginning or end. Water can change states among liquid, vapor, and ice at various places in the water cycle, with these processes happening in the blink of an eye and over millions of years.

Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go in a hurry. The water in the apple you ate yesterday may have fallen as rain half-way around the world last year or could have been used 100 million years ago by Mama Dinosaur to give her baby a bath.

Tuesday, November 18, 2008

Skin cancer

Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands and arms. Another type of skin cancer, melanoma, is more dangerous but less common.

Anyone can get skin cancer, but it is more common in people who
* Spend a lot of time in the sun or have been sunburned
* Have light-colored skin, hair and eyes
* Have a family member with skin cancer
* Are over age 50

You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs.

Monday, November 10, 2008

Botanic fruit and culinary fruit

Many true fruits, in a botanical sense, are treated as vegetables in cooking and food preparation because they are not sweet. These botanical fruits include cucurbits (e.g., squash, pumpkin, and cucumber), tomato, peas, beans, corn, eggplant, and sweet pepper, spices, such as allspice and chillies.Occasionally, though rarely, a culinary "fruit" is branded as a true fruit in the botanical sense. For example, rhubarb is often referred to as a fruit, because it is used to make sweet desserts such as pies, though only the petiole of the rhubarb plant is edible.In the culinary sense, a fruit is usually any sweet tasting plant product associated with seed(s), a vegetable is any savoury or less sweet plant product, and a nut any hard, oily, and shelled plant product.

Although a nut is a type of fruit, it is also a popular term for edible seeds, such as peanuts (which are actually a legume) and pistachios. Technically, a cereal grain is a fruit termed a caryopsis. However, the fruit wall is very thin and fused to the seed coat so almost all of the edible grain is actually a seed. Therefore, cereal grains, such as corn, wheat and rice are better considered edible seeds, although some references list them as fruits.Edible gymnosperm seeds are often misleadingly given fruit names, e.g. pine nuts, ginkgo nuts, and juniper berries. A Folk taxonomy is a vernacular naming system which describes how non-scientists categorize items.

Wednesday, November 05, 2008

Google Abandons Deal With Yahoo

Google has decided to abandon its advertising partnership with Yahoo to avoid having a "protracted legal battle" with regulators.

The deal involved Google providing some of the advertising around Yahoo's search results and would have been worth $800m (£494m) a year to Yahoo.

It was originally announced in June but has faced anti-trust objections.

Yahoo said in a statement it was disappointed that Google had decided not to fight for the deal in court.

Yahoo was relying on the deal with Google to help to placate shareholders angry about Yahoo rejecting Microsoft's takeover offer.

Google said it would not allow the prospect of a legal battle to distract it from its core mission.

"That would be like trying to drive down the road of innovation with the parking brake on," Google said in a blog.

Monday, November 03, 2008

Martial arts

Martial arts are systems of codified practices and traditions of training for combat. While they may be studied for various reasons, martial arts share a single objective: to defeat one or more people physically and to defend oneself or others from physical threat. In addition, some martial arts are linked to spiritual or religious beliefs/philosophies such as Hinduism, Buddhism, Daoism, Confucianism or Shinto while others have their own spiritual or non-spiritual code of honour. Many arts are also practised competitively most commonly as combat sports, but may also be in the form of dance.

The word 'martial' derives from the name of Mars, the Roman god of war. The term 'martial arts' literally means arts of war. This term comes from 15th century Europeans who were referring to their own fighting arts that are today known as Historical European martial arts. A practitioner of martial arts is referred to as a martial artist.