Monday, April 30, 2007


Multimedia is media that uses multiple forms of information content and information processing to inform or amuse the audience. Multimedia referd to the use of electronic media to store and experience multimedia content. Multimedia is similar to traditional mixed media in fine art, but with a broader scope. The term rich media is identical for interactive multimedia. Multimedia means that computer info can be represented through audio, graphics, image, video and animation in addition to traditional media (text and graphics). Hypermedia can be considered one particular multimedia application.

Multimedia may be generally divided into linear and non-linear categories. Linear dynamic content progresses without any navigation control for the observer such as a cinema presentation. Non-linear content offers user interactivity to control progress as used with a computer game or used in self-paced computer based training. Non-linear content is also known as hypermedia content.

Tuesday, April 24, 2007


Nature, in the broadest logic, is corresponding to the natural world, physical world or material world. "Nature" refers to the phenomena of the physical world, and also to living in general. The term usually does not contain manufactured things and human interaction unless capable in ways such as, e.g., "human nature" or "the whole of nature". Nature is also normally distinguished from the mystical. It ranges in level from the subatomic to the galactic.

Within the different uses of the word today, "nature" may refer to the universal realm of different types of living plants and animals, and in several cases to the processes associated with non-living objects – the way that particular types of things exist and change of their own pact, such as the weather and geology of the Earth, and the subject and power of which all these things are composed. It is often taken to mean the "natural surroundings" or rocks, forest and in general those things that have not been significantly altered by human involvement, or which persist in spite of human intervention. This more usual concept of natural things which can still be found today implies a difference between the natural and the artificial, with the latter being understood as that which has been brought into being by a human awareness or mind.

Wednesday, April 18, 2007

Space Shuttle Solid Rocket Booster

The Space Shuttle Solid Rocket Booster is the rocket that provides 83% of liftoff thrust for the Space Shuttle. It is the largest and most powerful solid rocket ever flown, and the most powerful rocket motor of any type ever flown. Each SRB produces 1.8 times the liftoff thrust of the F-1 engine used in the Saturn V moon rocket.

The two reusable SRBs provide the main thrust to lift the Space Shuttle off the pad and up to an altitude of about 150,000 feet . In addition, the two SRBs carry the entire weight of the external tank and orbiter and transmit the weight load through their structure to the mobile launcher platform. Each booster has a liftoff thrust of approximately 2,800,000 lbf at launch. They are ignited after the three space shuttle main engines' thrust level is verified. The two SRBs provide 83 % of the thrust at lift-off. Seventy five seconds after SRB separation, SRB apogee occurs at an altitude of approximately 220,000 feet , after which they land on parachutes; impact occurs in the ocean approximately 122 nautical miles downrange, after which the two are recovered.

Wednesday, April 11, 2007

Three Gorges Dam

The Three Gorges Dam spans the Yangtze River on Sandouping, Yichang, Hubei region, China. Construction began in 1994. It will be the major hydroelectric dam in the world, more than five times the size of the Hoover Dam. The reservoir began filling on June 1, 2003, and will occupy the current position of the scenic Three Gorges area, between the cities of Yichang, Hubei; and Fuling, Chongqing. Structural work was finished on May 20, 2006, nine months ahead of schedule. However, some generators still have to be installed and the dam is not expected to become fully equipped until 2009.

Three Gorges Dam, downstream side, 26 July 2004As with many dams, there is controversy over the operating cost and benefits of the Three Gorges Dam. Although there are economic profit from flood control and hydroelectric power, there are also concerns concerning the future of over 1.9 million people who will be displaced by the flood waters, the loss of some valuable archaeological and cultural sites, as well as the effects on the environment. It is believed that the dam was a contributing part in the extinction of the Yangtze River Dolphin.

Thursday, April 05, 2007

Early Stages of a pregnant woman and her health

Pregnancy is not an easy job for a woman. Starting from conception to birth, a woman's body carries out the most miraculous process of fertilization, implantation and the maturity and growth of her baby (or babies). Her body is her baby's dwelling place for the next nine months (or around 40 weeks) and the occurrences of pregnancy turn into a journey of many new physical feelings. Whether it is first, second, third (or more) pregnancy, her body will respond in a different way to each individual pregnancy. So health of a pregnant woman is very important to be taken care of.

Throughout the first 12 weeks of pregnancy called the '1st trimester’, a woman's body adjust to present a fostering and protective environment for her baby to grow and develop. Seldom, the early signs of pregnancy can make a woman feel puzzled. This may be for the reason that many of the physical signs of in the early hours of pregnancy such as enlarged tender breasts, sensitivity of tiredness, overstuffed and perhaps experiencing spasms and/or pelvic uneasiness can be considered as normal pre-menstrual signs. In all these stages the health of the woman declines because she is not only feeding herself, also her little developing fetus.

They may also sense disgusted or sick, due to morning sickness. It is not unusual to feel unsure about what is 'normal' during the early stages of pregnancy development, and unfamiliar signs or sensations may trigger concerns about the health, of her and baby. It’s been proved by the Gynecologists that every woman's body will react in a different way to being pregnant. Many women find their early pregnancy symptoms very difficult to cope with, both at work and generally.

Due to continuous vomiting and nourishing the fetus the pregnant woman may be exhausted very easily. She has to constantly keep her energetic by maintaining a healthy diet schedule as prescribed by the physicians. She can have more fresh green vegetables and fruit juices to make her feel fresh and energetic. It’s always significant to make sure that she avoids drinking and smoking because whatever she has will be directly absorbed by the baby. Once the fetus starts developing she has to get primed for all the obstacles she has to experience throughout pregnancy. Many psychologists predict that a healthy pregnancy is not only from taking care of the nutrition for the pregnant women, more than that she has to be taken care from all the hassles in her family. It’s the duty of a loving husband to caress her comfortably and keep her happy always throughout the gestation period. This will not only make the woman feel happy and hopeful it will directly lead to the good development of the fetus.

Sunday, April 01, 2007


An industry is generally any grouping of businesses that share a common method of generating profits, such as the music industry, the automobile industry, or the cattle industry. It is also used specifically to refer to an area of economic production focused on manufacturing which involves large amounts of capital investment before any profit can be realized, also called "heavy industry.As-of 2004, Financial services is the largest industry or category of industries in the world in terms of earnings.

Industry in the second sense became a key sector of production in European and North American countries during the Industrial Revolution, which upset previous mercantile and feudal economies through many successive rapid advances in technology, such as the development of steam engines, power looms, and advances in large scale steel and coal production. Industrial countries then assumed a capitalist economic policy. Railroads and steam-powered ships began speedily integrating previously impossibly-distant world markets, enabling private companies to develop to then-unheard of size and wealth. Manufacturing is a wealth-producing sector of an economy. Other sectors such as the service sector tend to be wealth consuming sectors. Following the Industrial Revolution, perhaps a third of the world's economic output is derived from manufacturing industries—more than agriculture's share.