The ARM architecture (Advanced RISC Machine or Acorn RISC Machine) is a 32-bit RISC processor architecture developed by ARM Limited that is widely used in a number of embedded designs. Due to their power saving features, ARM CPUs are dominant in the mobile electronics market, where low power consumption is a critical design goal.
Today, the ARM family accounts for over 75% of all 32-bit embedded CPUs, making it one of the most prolific 32-bit architectures in the world. ARM CPUs are found in all corners of consumer electronics, from portable devices to computer peripherals. Important branches in this family include Marvell's XScale and the Texas Instruments OMAP series.
Friday, June 29, 2007
Sunday, June 24, 2007
Ice
Ice is the name given to any one of the 14 known solid phases of water. Though in non-scientific contexts, it usually describes ice Ih, which is the most abundant of these phases. It is a crystalline solid, which can appear transparent or an opaque bluish-white color depending on the presence of impurities such as air. The addition of other materials such as soil may further alter appearance. The most common phase transition to ice Ih occurs when liquid water is cooled below 0 °C (273.15 K, 32 °F) at standard atmospheric pressure. However, it can also deposit from a vapor with no intervening liquid phase such as in the formation of frost. Ice appears in varied forms such as hail, ice cubes, and glaciers. It plays an important role with many meteorological phenomena. The ice caps of the polar regions are of significance for the global climate and particularly the water cycle.
Tuesday, June 19, 2007
Neem cake
Neem cake natural manure is the by-product obtained in the process of cold pressing of Neem fruits and kernels, and the solvent removal process for neem oil cake. It is a potential source of organic manure under the Bureau of India Standards, Neem has established considerable potential as a fertilizer. For this purpose, neem cake and neem leaves are particularly promising. Puri , in his book on neem has given details about neem seed cake as manure and nitrification inhibitor. The author has described that after processing neem cake can be used for partial replacement of poultry and cattle feed.
Tuesday, June 12, 2007
People
People are a group of humans, either with not mentioned traits, or specific characteristics (e.g. the people of Spain or the people of the Plains).The term people is often used in English as the suppletive plural of person. However, the word persons is sometimes used in place of people, particularly when it would be ambiguous with its collective sense (e.g. missing persons instead of missing people). The term people can together refer to all humans or it can be used to identify the citizens of a nation, or members of a tribe, ethnic, or religious group. People of color is a phrase used to describe people with skin color darker than that of white people.
Thursday, June 07, 2007
Electromagnetic hypersensitivity syndrome
Some users of mobile handsets have reported feeling several unspecific symptoms during and after its use, such as burning and tingling feelings in the skin of the head and extremities, fatigue, sleep disturbances, dizziness, loss of mental attention, reaction times and memory retentiveness, headaches, malaise, tachycardia and disturbances of the digestive system. Some researchers, implying a causal relationship, have named this syndrome as a new diagnostic entity, EHS or ES (electro sensitivity). The World Health Organization prefers to name it “idiopathic environmental intolerance", in order to avoid the implication of causation.
Sunday, June 03, 2007
Chess strategy
Chess strategy is concerned with the evaluation of chess positions and with setting up goals and long-term tactics for upcoming play. During the evaluation, a player must take into account the value of pieces on the board, pawn structure, king safety, positioning, and control of key squares and groups of squares.
The most basic is to count the total value of pieces on both sides. The point values used for this purpose are based on familiarity. Usually pawns are considered worth one point, knights and bishops three points each, rooks five points, and queens nine points. The fighting value of the king in the endgame is equivalent to four points. These basic values are modified by other factors such as position of the piece, coordination between pieces or type of position.
Another important factor in the evaluation of chess positions is the pawn structure or pawn skeleton. Since pawns are the most immobile of the chess pieces, the pawn structure is moderately static and largely determines the calculated nature of the position. Weaknesses in the pawn structure, such as isolated, doubled or backward pawns and holes, once created, are usually permanent. Care must therefore be taken to avoid them unless they are remunerated by another valuable asset, such as the chance to develop an attack.
The most basic is to count the total value of pieces on both sides. The point values used for this purpose are based on familiarity. Usually pawns are considered worth one point, knights and bishops three points each, rooks five points, and queens nine points. The fighting value of the king in the endgame is equivalent to four points. These basic values are modified by other factors such as position of the piece, coordination between pieces or type of position.
Another important factor in the evaluation of chess positions is the pawn structure or pawn skeleton. Since pawns are the most immobile of the chess pieces, the pawn structure is moderately static and largely determines the calculated nature of the position. Weaknesses in the pawn structure, such as isolated, doubled or backward pawns and holes, once created, are usually permanent. Care must therefore be taken to avoid them unless they are remunerated by another valuable asset, such as the chance to develop an attack.
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