Sunday, January 21, 2007

Solar System

The Solar System is the stellar system comprising the Sun and the retinue of celestial objects gravitationally bound to it: the eight planets, their 162 known moons, three currently identified dwarf planets and their four known moons, and thousands of small bodies. This last category includes asteroids, meteoroids, comets, and interplanetary dust.

The principal component of the Solar System is the Sun; a main sequence G2 star that contains 99.86% of the system's known mass and dominates it gravitationally. Because of its large mass, the Sun has an interior density high enough to sustain nuclear fusion, releasing enormous amounts of energy, most of which is radiated into space in the form of electromagnetic radiation, including visible light. The Sun's two largest orbiting bodies, Jupiter and Saturn, account for more than 90% of the system's remaining mass.

Monday, January 08, 2007

Genotype

The genotype is the specific genetic makeup of an individual, in the form of DNA. Together with the environmental variation that influences the individual, it codes for the phenotype of that individual. Non-hereditary mutations are not classically understood as representing the individuals’ genotype. Hence, scientists and doctors sometimes talk for example about the type of a particular cancer, thus separating the disease from the diseased. While codons for different amino acids may change in a random mutation, this doesn't necessarily alter the phenotype.

Typically, one refers to an individual's genotype with regard to a particular gene of interest and, in polyploid individuals; it refers to what combination of alleles the individual carries. Any given gene will usually cause an observable change in an organism, known as the phenotype. The distinction between genotype and phenotype is commonly experienced when studying family patterns for certain hereditary diseases or conditions, for example, hemophilia. Sometimes people who do not have hemophilia can have children with the disease, because the parents each "carried" hemophilia genes in their body, even though these genes have no effect on the parent’s health.

Monday, January 01, 2007

Competitiveness

Many philosophers and psychologists have recognized a trait in most living organisms that drive the particular organism to compete. This trait, called competitiveness, is viewed as an innate biological trait that coexists along with the urge for survival. Competitiveness, or the inclination to compete, though, has become identical with aggressiveness and ambitiousness in the English language. Competing with, however, instead of competing against - is synonymous with the synthesis process, and exercised through dialectic. More advanced civilizations integrate progressiveness, instead of forcefulness, into their interactions.

The term also applies to econometrics. Here it is a comparative measure of the ability and performance of a firm or ub-sector to sell and produce/supply goods and/or services in a given market. The two academic bodies of thought on the evaluation of competitivenes are the Structure Conduct Performance Paradigm and the more contemporary New Empirical Industrial organization model. Predicting changes in the competitiveness of business sectors is becoming an integral and explicit step in public policy making. Within capitalist economic systems, the drive of enterprises is to maintain and improve their own competitiveness.