Cohn Ronald

High Quality Content by WIKIPEDIA articles! In linguistics, specifically phonetics and phonology, schwa (sometimes spelled shwa) can mean the following:

High Quality Content by WIKIPEDIA articles! Qkumba Zoo is a dance music trio from Johannesburg, South Africa, consisting of vocalist Levannah, dancer/sculptor Tziki and musician/producer Owl. The band was originally formed by Owl and Levannah as a duo called "Ocean Road".

High Quality Content by WIKIPEDIA articles! In cryptography, the RSA problem summarizes the task of performing an RSA private-key operation given only the public key. The RSA algorithm raises a message to an exponent, modulo a composite number N whose factors are not known. As such, the task can be neatly described as finding the eth roots of an arbitrary number, modulo N. For large RSA key sizes (in excess of 1024 bits), no efficient method for solving this problem is known; if an efficient method is ever developed, it would threaten the current or eventual security of RSA-based cryptosystems -- both for public-key encryption and digital signatures.

High Quality Content by WIKIPEDIA articles! Thermal energy storage comprises a number of technologies that store thermal energy in energy storage reservoirs for later use. They can be employed to balance energy demand between day time and night time. The thermal reservoir may be maintained at a temperature above (hotter) or below (colder) that of the ambient environment. The applications today include the production of ice, chilled water, or eutectic solution at night, or hot water which is then used to cool / heat environments during the day.

High Quality Content by WIKIPEDIA articles! The President of Cyprus is the head of state and the head of government of the Republic of Cyprus. The office was created in 1960, after Cyprus gained its independence from the United Kingdom. Currently, the President of Cyprus is Dimitris Christofias.

High Quality Content by WIKIPEDIA articles! Theoretical physics is a branch of physics which employs mathematical models and abstractions of physics to rationalize, explain and predict natural phenomena. The importance of mathematics in theoretical physics is sometimes emphasized by expression "mathematical physics".

High Quality Content by WIKIPEDIA articles! In mathematics, a topological group is a group G together with a topology on G such that the group`s binary operation and the group`s inverse function are continuous functions with respect to the topology. A topological group is a mathematical object with both an algebraic structure and a topological structure. Thus, one may perform algebraic operations, because of the group structure, and one may talk about continuous functions, because of the topology.

High Quality Content by WIKIPEDIA articles! The President of the Chamber of Deputies of Romania is the deputy elected to preside over the meetings in the lower chamber of the Parliament of Romania. He (or she) is also the president of the Standing Bureau of the Chamber of Deputies, and the second person in the presidential line of succession, after the President of the Senate.

High Quality Content by WIKIPEDIA articles! A refrigerant is a substance used in a heat cycle usually including, for enhanced efficiency, a reversible phase change from a liquid to a gas. Traditionally, fluorocarbons, especially chlorofluorocarbons, were used as refrigerants, but they are being phased out because of their ozone depletion effects. Other common refrigerants used in various applications are ammonia, sulfur dioxide, and non-halogenated hydrocarbons such as methane.

High Quality Content by WIKIPEDIA articles! Theoretical linguistics is the branch of linguistics that is most concerned with developing models of linguistic knowledge. The fields that are generally considered the core of theoretical linguistics are syntax, phonology, morphology, and semantics. Although phonetics often informs phonology, it is often excluded from the purview of theoretical linguistics, along with psycholinguistics and sociolinguistics. Theoretical linguistics also involves the search for an explanation of linguistic universals, that is, properties all languages have in common.

High Quality Content by WIKIPEDIA articles! In mathematics, the RSA numbers are a set of large semiprimes (numbers with exactly two prime factors) that are part of the RSA Factoring Challenge. The challenge was to find the prime factors but it was declared inactive in 2007. It was created by RSA Laboratories in March 1991 to encourage research into computational number theory and the practical difficulty of factoring large integers.

High Quality Content by WIKIPEDIA articles! Mathematical and theoretical biology is an interdisciplinary scientific research field with a range of applications in biology, medicine and biotechnology. The field may be referred to as mathematical biology or biomathematics to stress the mathematical side, or as theoretical biology to stress the biological side. It includes at least four major subfields: biological mathematical modeling, relational biology/complex systems biology (CSB), bioinformatics and computational biomodeling/biocomputing. Mathematical biology aims at the mathematical representation, treatment and modeling of biological processes, using a variety of applied mathematical techniques and tools. It has both theoretical and...

High Quality Content by WIKIPEDIA articles! The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother`s blood supply. "True" placentas are a defining characteristic of eutherian or "placental" mammals, but are also found in some snakes and lizards with varying levels of development up to mammalian levels. Note, however, that the homology of such structures in various viviparous organisms is debatable at best and, in invertebrates such as Arthropoda, is definitely analogous at best. However, a recent publication describes what amounts to a phylogenetically analogous, but physiologically and functionally almost identical structure in a skink....

High Quality Content by WIKIPEDIA articles! Small Is Beautiful: Economics As If People Mattered is a collection of essays by British economist E. F. Schumacher. The phrase "Small Is Beautiful" came from a phrase by his teacher Leopold Kohr. It is often used to champion small, appropriate technologies that are believed to empower people more, in contrast with phrases such as "bigger is better".

High Quality Content by WIKIPEDIA articles! The RSA Factoring Challenge was a challenge put forward by RSA Laboratories on March 18, 1991 to encourage research into computational number theory and the practical difficulty of factoring large integers and cracking RSA keys used in cryptography. They published a list of semiprimes (numbers with exactly two prime factors) known as the RSA numbers, with a cash prize for the successful factorization of some of them. The smallest of them, a 100 decimal digit number called RSA-100 was factored by April 1, 1991, but many of the bigger numbers have still not been factored and are expected to remain unfactored for quite some time.

High Quality Content by WIKIPEDIA articles! Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation. Reforestation can be used to improve the quality of human life by soaking up pollution and dust from the air, rebuild natural habitats and ecosystems, mitigate global warming since forests facilitate biosequestration of atmospheric carbon dioxide, and harvest for resources, particularly timber.

High Quality Content by WIKIPEDIA articles! In mathematics, a theorem is a statement that has been proven on the basis of previously established statements, such as other theorems, and previously accepted statements, such as axioms. The derivation of a theorem is often interpreted as a proof of the truth of the resulting expression, but different deductive systems can yield other interpretations, depending on the meanings of the derivation rules. The proof of a mathematical theorem is a logical argument demonstrating that the conclusions are a necessary consequence of the hypotheses, in the sense that if the hypotheses are true then the conclusions must also be true, without any further assumptions. The concept of a theorem is therefore...

High Quality Content by WIKIPEDIA articles! A group of taxa is said to be paraphyletic if the group consists of all the descendants of a hypothetical closest common ancestor minus one or more monophyletic groups of descendants (typically one such group). This term is used in both phylogenetics and linguistics.

High Quality Content by WIKIPEDIA articles! A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus. A true reflex is a behavior which is mediated via the reflex arc; this does not apply to casual uses of the term `reflex`.

High Quality Content by WIKIPEDIA articles! In telecommunications, RS-232 (Recommended Standard 232) is the traditional name for a series of standards for serial binary single-ended data and control signals connecting between a DTE (Data Terminal Equipment) and a DCE (Data Circuit-terminating Equipment). It is commonly used in computer serial ports. The standard defines the electrical characteristics and timing of signals, the meaning of signals, and the physical size and pin out of connectors. The current version of the standard is TIA-232-F Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange, issued in 1997.

High Quality Content by WIKIPEDIA articles! Rozonda Ocelean Thomas (born February 27, 1971), best known by her stage name Chilli, is a four-time Grammy Award–winning American R B singer and actress who rose to fame as one third of the successful R B/Hip-Hop/Pop girl group TLC.