the reason for life

Thursday, May 24, 2007

Song

A song is a relatively short musical composition. Many songs contain vocal parts for the human voice, commonly accompanied by other musical instruments (exceptions would be scat songs) and feature words (lyrics). It is typically for a solo singer, though may also be a duet, trio, or more voices (works with more than one voice to a part, however, are considered choral). The words of songs are typically of a poetic, rhyming nature, although they may be religious verses or free prose. Songs can be broadly divided into many different forms, depending on the criteria used. One division is between "art songs", "popular music songs", and "folk songs". Other common methods of classification are by purpose (sacred vs secular), by style (dance, ballad, Lieder, etc.) or by time of origin (Renaissance, Contemporary, etc).

Colloquially, song is often used to refer any music composition, even those without vocals (though in music styles that are predominantly vocal-based, a composition without vocals is often called an instrumental). In European classical music, however, this usage is considered incorrect and "song" should only be used to describe a composition for the human vocals.

Art songs are songs created for performance in their own right, or for the purposes of a European upper class, usually with piano accompaniment, although they can also have other types of accompaniment such as an orchestra or string quartet, and are always notated. Generally they have an identified author(s) and require voice training for acceptable performances. The German word for song, "Lied" (plural: "Lieder"), is used in French and English-speaking communities to refer to the serious art song, whereas in German-speaking communities the word "Kunstlied" (plural: "Kunstlieder") is used to distinguish art song from folk song ("Volkslied"). The lyrics are often written by a lyricist and the music separately by a composer. Art songs may be more formally complicated than popular or folk songs, though many early Lieder by the likes of Franz Schubert are in simple strophic form. They are often important to national identity. Art songs feature in many European cultures, including but not limited to: Russian (romansy), Dutch (lied), Italian (canzoni), French (mélodies), Scandinavian (sånger), Spanish (canciones). Cultures outside of Europe may have what they consider to be a classical music tradition, such as India, and thus feature art songs.

Of the romantic music era, the art song is considered one of the most distinctive music forms developed. The accompaniment of pieces of this period is considered as an important part of the composition. The art song of this period is often a duet in which the vocalist and accompanist share in interpretive importance. The pieces were most often written to be performed in a home setting although today the works enjoy popularity as concert pieces. The emergence of poetry during this era was much of what inspired the creation of these pieces by Brahms, Schumann, Schubert and other period composers. These composers set poems in their native language. Many works were inspired by Johann Wolfgang von Goethe and Heinrich Heine. An art song with a German text is often referred to as a Lied. The romantic art song was often reflective of the popular poetic notions of despair created by places, legends, nature or lost love. Some composers would interpret the poem literally and create music which imitated the music and imagery of the music. The vocal melody was created to reflect the form and emphasis of the poem. The mood of the piece would often be summarized in the closing piano section called a postlude. To reflect the stanzas of a poem, the composer could use strophic form to reuse music for each stanza. Another method would be to write new music for each stanza to create a unique form, this was through-composed form known in German as durchkomponiert. A combination of both of these techniques in a single setting was called a modified strophic form. Often romantic art songs sharing similar elements were grouped as a song cycle. (Kamien, 217–18)

this is lovely

Folk songs

Folk songs are songs of often anonymous origin (or are public domain) that are transmitted orally. They are frequently a major aspect of national or cultural identity. Art songs often approach the status of folk songs when people forget who the author was. Folk songs are also frequently transmitted non-orally (that is, as sheet music), especially in the modern era. Folk songs exist in almost every, if not all, culture(s). For more on folk songs, see Folk music.

Weather

Weather most often results from temperature differences from one place to another. On large scales, temperature differences occur because areas closer to the equator receive more energy per unit area from the Sun than do regions closer to the poles. On local scales, temperature differences can occur because different surfaces (such as oceans, forests, ice sheets, or man-made objects) have differing physical characteristics such as reflectivity, roughness, or moisture content.

Surface temperature differences in turn cause pressure differences. A hot surface heats the air above it and the air expands, lowering the air pressure. The resulting horizontal pressure gradient accelerates the air from high to low pressure, creating wind, and Earth's rotation then causes curvature of the flow via the Coriolis effect. The simple systems thus formed can then display emergent behaviour to produce more complex systems and thus other weather phenomena. Large scale examples include the Hadley cell while a smaller scale example would be coastal breezes.

The strong temperature contrast between polar and tropical air gives rise to the jet stream. Most weather systems in the mid-latitudes are caused by instabilities of the jet stream flow (see baroclinic instability). Weather systems in the tropics are caused by different processes, such as monsoons or organized thunderstorm systems.

Because the Earth's axis is tilted relative to its orbital plane, sunlight is incident at different angles at different times of the year. In June the Northern Hemisphere is tilted towards the sun, so at any given Northern Hemisphere latitude sunlight falls more directly on that spot than in December (see Effect of sun angle on climate). This effect causes seasons. Over thousands to hundreds of thousands of years, changes in Earth's orbital parameters affect the amount and distribution of solar energy received by the Earth and influence long-term climate (see Milankovitch cycles).

[edit] Terrestrial weather
Cumulus mediocris clouds
Cumulus mediocris clouds

On Earth, common weather phenomena include such things as wind, cloud, rain, snow, fog and dust storms. Less common events include natural disasters such as tornadoes, hurricanes and ice storms. Almost all familiar weather phenomena occur in the troposphere (the lower part of the atmosphere). Weather does occur in the stratosphere and can affect weather lower down in the troposphere, but the exact mechanisms are poorly understood.[1]

The atmosphere is a chaotic system, so small changes to one part of the system can grow to have large effects on the system as a whole. This makes it difficult to accurately predict weather more than a few days in advance, though weather forecasters are continually working to extend this limit through the scientific study of weather, Meteorology. It is theoretically impossible to make useful day-to-day predictions more than about two weeks ahead, imposing an upper limit to potential for improved prediction skill.[1] Chaos theory says that the slightest variation in the motion of the air will grow with time. This idea is sometimes called the butterfly effect, from the idea that the motions caused by the flapping wings of a butterfly eventually could produce marked changes in the state of the atmosphere. Because of this sensitivity to small changes it will never be possible to make perfect forecasts, although there still is much potential for improvement.

[edit] Shaping the planet

Weather is one of the fundamental processes that shape the Earth. The process of weathering breaks down rocks and soils into smaller fragments and then into their constituent substances. Almost all weather is the cause of heat exchange[citation needed]. These are then free to take part in chemical reactions that can affect the surface further (e.g., acid rain) or are reformed into other rocks and soils. Weather also plays a major role in erosion of the surface.

[edit] Human history
Badly Flooded New Orleans after Hurricane Katrina.
Badly Flooded New Orleans after Hurricane Katrina.

Weather has played a large and sometimes direct part in human history. Aside from climatic changes that have caused the gradual drift of populations (for example the desertification of the Middle East, and the formation of land bridges during glacial periods), extreme weather events have caused smaller scale population movements and intruded directly in historical events. One such event is the saving of Japan from invasion by the Mongol fleet of Kublai Khan by the Kamikaze winds in 1281. A series of great storms throughout the 13th century caused the powerful English Cinque Ports to be silted up and hence lose their influence. More recently, Hurricane Katrina forced the temporary abandonment of the entire city of New Orleans in 2005.

The effect of seasons on peoples' lives has long also caused them to observe and celebrate certain events during the calendar, some of which, in altered form, are still observed today. Christmas, for example, is the Yule of the pagans, celebrated around the winter solstice, the shortest day of the year (in the Northern Hemisphere, the summer solstice in the Southern Hemisphere).

Though weather affects people in drastic ways, it can also affect the human race in simpler ways. It has been noted that the human immunity system is affected in extreme heat or cold. Mood (psychology) can also be affected by weather, hence the common scene of heavy downpour in Soap operas when a person cries. Weather, in its power, however, cannot affect a person's performance, at work, school or play. It is the person's own mindset that leads to poor performance during times of bad weather, heat, cold or rain. Another cause of human impact on the weather is global warming. Global warming is the rise in the earths' temperature which is slowly causing the glaciers to melt and the average temperature to become warmer each year.

[edit] Forecasting
An example of a two-day weather forecast in the visual style that an American newspaper might use.
An example of a two-day weather forecast in the visual style that an American newspaper might use.

Weather forecasting is the application of science and technology to predict the state of the atmosphere at a future time. Prior to the advent of scientific methods of weather forecasting, a large body of weather folklore developed to explain the weather. An example is the Groundhog Day celebration near the end of winter in parts of the United States and Canada.It tells if spring is near or far. It is if the groundhog sees his shadow or not. Today, weather forecasts are made by collecting data that describe the current state of the atmosphere (particularly the temperature, humidity and wind) and using physically-based mathematical models to determine how the atmosphere is expected to change in the future. The chaotic nature of the atmosphere means that perfect forecasts are impossible, and that forecasts become less accurate as the range of the forecast increases.

[edit] Weather modification

Attempts to control the weather have been carried out for many years. The most common efforts to modify the weather involve cloud seeding to stimulate rainfall or suppress hail. The results of these efforts are mostly ambiguous.

On a grander scale, science fiction authors have long posited the idea of terraforming other planets in order to make them habitable by human beings. While this may be possible in the distant future, this is far beyond current technology.

[edit] Extremes

Main article: List of weather records

On earth, temperatures usually range between ±40°C. However, the wide range of climates and latitudes offer extremes of temperature well outside this range. The coldest air temperature ever recorded on Earth is -89.2°C (-127.8°F), at Vostok, Antarctica on 21 July 1983. The hottest air temperature ever recorded was 57.7°C (135.9°F), at Al 'Aziziyah, Libya, on 13 September 1922. The highest recorded average annual temperature was 34.4°C (94°F) at Dallol, Ethiopia. The coldest recorded average annual temperature is -50.6°C (-59°F) at Vostok, Antarctica. The coldest average annual temperature in a permanently inhabited location is at Resolute, Nunavut, in Canada[citation needed].

[edit] Extra-terrestrial weather
Jupiter's Great Red Spot
Jupiter's Great Red Spot

Studying how the weather works on other planets has been seen as helpful in understanding how it works on Earth.[2] Weather on other planets follows many of the same physical principles as weather on Earth, but occurs on different scales and in atmospheres having different chemical composition. The Cassini-Huygens mission to Titan discovered clouds formed from methane or ethane which deposit rain composed of liquid methane and other organic compounds. Earth's atmosphere includes about six latitudinal circulation zones, three in each hemisphere (see Hadley cell). In contrast Jupiter's banded appearance shows over a dozen such zones, while Venus appears to have no zones at all.

One of the most famous landmarks in the solar system, Jupiter's Great Red Spot, is an anticyclonic storm known to have existed for at least 300 years. On other gas giants the lack of a surface allows the wind to reach enormous speeds: gusts of up to 400 metres per second (about 1440 km/h / 900 mi/h) have been measured on the planet Neptune. This has created a puzzle for planetary scientists. The weather is ultimately created by solar energy and the amount of energy received by Neptune is only about 1/900th of that received by Earth, yet the intensity of weather phenomena on Neptune is far greater than on Earth.[3]

[edit] Extra-planetary weather
Aurora Borealis
Aurora Borealis

Weather is not limited to planetary bodies. A star's corona is constantly being lost to space, creating what is essentially a very thin atmosphere throughout the solar system. The movement of mass ejected from the Sun is known as the solar wind.

Inconsistencies in this wind and larger events on the surface of the star, such as coronal mass ejections, form a system that has features analogous to conventional weather systems (such as pressure and wind) and is generally known as space weather. The activity of this system can affect planetary atmospheres and occasionally surfaces. The interaction of the solar wind with the terrestrial atmosphere can produce spectacular aurorae, and can play havoc with electrically sensitive systems such as electricity grids and radio signals.

Friday, April 06, 2007

Writing

Writing

Writing, in its most common sense, is the preservation and the preserved text on a medium, with the use of signs or symbols. In that regard, it is to be distinguished from illustrating such as cave drawings and paintings on the one hand, and authoring such as tape recordings, and film or movies, on the other.

Introduction

Writing, more particularly, refers to two activities: writing as a noun, the thing that is written; and writing as the verb, designates the activity of writing. It refers to the inscription of characters on a medium, thereby forming words, and larger units of language, known as texts. It also refers to the creation of meaning and the information thereby. In that regard, linguistics (and related sciences) distinguishes between the written language and the spoken language. The significance of the medium by which meaning and information is conveyed is indicated by the distinction that is made in the arts and sciences; for example, in speech, or speaking: public speaking is a distinctly different activity, as is poetry reading; the former is governed by the rules of rhetoric, while the latter by poetics.

The person who composes text is generally styled a writer, or an author. However, more specific designations exist, which are dictated by the particular nature of the text; for example, poet, essayist, novelist, and the list goes on.

Writing is also a distinctly human activity. It has been said that a monkey, randomly typing away on a typewriter (in the days when typewriters replaced the pen or plume as the preferred instrument of writing) could re-create Shakespeare-- but only if it lived long enough (this is known as the infinite monkey theorem). Such writing has been speculatively designated as coincidental. It is also speculated that extra-terrestrial beings exist who may possess writing. The fact is, however, that the only known writing is human writing.

Writing also presupposes, at a minimum, three other activities.

Letter and word recording used to presuppose penmanship, and in earlier times, there were professional scribes who were especially talented in that regard. In more recent times, a new requirement emerged - the skill of typing. But today, one-, or two-fingered typing is sufficient, though inefficient, a new skill is presupposed, though not necessary: the knowledge of dedicated software, such as WordPerfect, and Word. The elements of such writing are, of course, the letters of the alphabet and the alphanumeric character set included within the standardized ASCII family of signs or symbols. When appearance factors such as legibility and aesthetics of the words are of greater concern, graphic design-related letter and word recording skills such as typography and typesetting may be required.

The next skill required is the ability to spell words, or significant knowledge of the contents of a dictionary, and the rules of grammar. However, with the advent of the computer a useful new tool has emerged, the so-called spell check, which automatically checks, and, or, corrects, often both spelling and grammatical mistakes or errors.

But the most important skill in writing is considered to be talent, which is believed to be an inborn ability. Nevertheless, courses and schools exist which, if they do not promise to teach one how to become a writer, at least are recognized as being able to improve one's technical skills on the road to improving one's writing ability.


Means for recording information

Writing systems

The major writing systems – methods of inscription – broadly fall into four categories: logographic, syllabic, alphabetic, and featural. Another category, ideographic (symbols for ideas), has never been developed sufficiently to represent language. A 6th, pictographic, is insufficient to represent language on its own, but often forms the core of logographies.

Logographies

A logogram is a written character which represents a word or morpheme. The vast number of logograms needed to write language, and the many years required to learn them, are the major disadvantage of the logographic systems over alphabetic systems. However, the efficiency of reading logographic writing once it is learned is a major advantage. No writing system is wholly logographic: all have phonetic components as well as logograms ("logosyllabic" components in the case of Chinese, cuneiform, and Mayan, where a glyph may stand for a morpheme, a syllable, or both; "logoconsonantal" in the case of hieroglyphs), and many have an ideographic component (Chinese "radicals", hieroglyphic "determiners"). For example, in Mayan, the glyph for "fin", pronounced "ka'", was used to represent the syllable "ka" whenever clarification was needed. However, such phonetic elements complement the logographic elements, rather than vice versa. The main logographic system in use today is Chinese, used with some modification for various languages of China, Japanese, and, to a lesser extent, Korean in South Korea. Another is the classical Yi script.

Syllabaries

A syllabary is a set of written symbols that represent (or approximate) syllables. A glyph in a syllabary typically represents a consonant followed by a vowel, or just a vowel alone, though in some scripts more complex syllables (such as consonant-vowel-consonant, or consonant-consonant-vowel) may have dedicated glyphs. Phonetically related syllables are not so indicated in the script. For instance, the syllable "ka" may look nothing like the syllable "ki", nor will syllables with the same vowels be similar.

Syllabaries are best suited to languages with relatively simple syllable structure, such as Japanese. Other languages that use syllabic writing include the Linear B script for Mycenaean Greek; Cherokee; Ndjuka, an English-based creole language of Surinam; and the Vai script of Liberia. Most logographic systems have a strong syllabic component.


Alphabets

An alphabet is a small set of symbols, each of which roughly represents or historically represented a phoneme of the language. In a perfectly phonological alphabet, the phonemes and letters would correspond perfectly in two directions: a writer could predict the spelling of a word given its pronunciation, and a speaker could predict the pronunciation of a word given its spelling. As languages often evolve independently of their writing systems, and writing systems have been borrowed for languages they were not designed for, the degree to which letters of an alphabet correspond to phonemes of a language varies greatly from one language to another and even within a single language.

In most of the alphabets of the Mid-East, only consonants are indicated, or vowels may be indicated with optional diacritics. Such systems are called abjads. In other, vowels are indicated through diacritics or modification of the shape of the consonant. These are called abugidas. Some abugidas, such as Ethiopic and Cree, are learned by children as syllabaries, and are often called "syllabics". However, unlike true syllabaries, there is not an independent glyph for each syllable.

Sometimes the term "alphabet" is restricted to systems with separate letters for consonants and vowels, such as the Latin alphabet.


Featural scripts

A featural script notates the building blocks of the phonemes that make up a language. For instance, all sounds pronounced with the lips ("labial" sounds) may have some element in common. In the Latin alphabet, this is accidentally the case with the letters "b" and "p"; however, labial "m" is completely dissimilar, and the similar-looking "q" is not labial. In Korean Hangul, however, all four labial consonants are based on the same basic element. However, in practice, Korean is learned by children as an ordinary alphabet, and the featural elements tend to pass unnoticed.

Another featural script is SignWriting, the most popular writing system for many sign languages, where the shapes and movements of the hands and face are represented iconically. Featural scripts are also common in fictional or invented systems, such as Tolkien's Tengwar.

Tuesday, March 27, 2007

Life Stance

A life stance or lifestance is a person's relation with what he or she accepts as of ultimate importance, the commitments and presuppositions of this, and the theory and practice of working it out in living.

The term encompasses both religions and alternatives to religion, without discrimination between them. The term was introduced out of a concern that the lack of non-discriminatory terminology could contribute to a failure to protect the rights of those with a life stance not corresponding to a traditional religion. In particular, the term "non-believer" has sometimes been used to refer to those not associated with traditional religions, misleadingly conveying a lack of convictions equal in depth to those of religious adherents.

A religion is (typically) a theistic life stance, involving acceptance of a Divine Being. Humanism is an example of a non-theistic, secular life stance, and the term lifestance is widely used by Humanists. Traditional religions such as Buddhism, Taoism, and Confucianism are also life stances that are largely non-theistic.

A life stance differs from a worldview or a belief system in that the term life stance or lifestance emphasizes a focus on what is of ultimate importance. Life stance differs from eupraxsophy in that the latter typically implies a strictly non-theistic outlook, whereas it is essential that a life stance can be theistic or non-theistic.

Life

Life is a condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally. A diverse array of living organisms can be found in the biosphere on Earth. Properties common to these organisms – plants, animals, fungi, protists, archaea and bacteria – are a carbon and water-based cellular form with complex organization and genetic information. They undergo metabolism, possess a capacity to grow, respond to stimuli, reproduce and, through natural selection, adapt to their environment in successive generations.

An entity with the above properties is considered to be an organism. However, not every definition of life considers all of these properties to be essential. For example, the capacity for descent with modification is often taken as the only essential property of life. This definition notably includes viruses, which do not qualify under narrower definitions as they are acellular and do not metabolise. Broader definitions of life may also include theoretical non-carbon-based life and other alternative biology.

Tuesday, June 13, 2006

A useful characteristic

A useful characteristic upon which to base a definition of life is that of descent with modification: the ability of a life form to produce offspring that are like its parent or parents, but with the possibility of some variation due to chance. Descent with modification is sufficient by itself to allow evolution, assuming that the variations in the offspring allow for differential survival. The study of this form of heritability is called genetics. In all known life forms (assuming prions are not counted as such), the genetic material is primarily DNA or the related molecule, RNA.

This argument would, however, include replicating elements which have been observed to evolve, but are not generally accepted as being alive. Examples include viruses, plasmids, transposons, satellite DNA. Another exception might be the software code of certain forms of computer viruses and programs created through genetic programming.

The scientific logic concept of life

The scientific logic concept of life: Life is a form of non physical energy produced by the reproduction from another live organism that when attached to a physical body or organism, will impart it with what is known as the life cycle. The life cycle is the characteristic ability to biostart, grow, metabolize nutrients, mature, reproduce, and die.

No. 1. – Biostart – Occurs when the new organism begins the process of exhibiting life. That occurs as soon as the preprogrammed conditions for the multiplication of the physical cells of the organism are fulfilled. It begins the process of changing its size and appearance following a predefined sequence of events that will lead to the recreation of one or more entities similar to the one it came from.

No. 2. - Metabolism - metabolism produces energy to sustain the subsistence and growth of the entity by converting non living materials into cellular components (synthesis) and decomposing organic matter (see catalysis). Living things require energy to maintain internal organization (homeostasis and to produce the other phenomena associated with life.

No. 3 – Growth -- results from a higher rate of synthesis than catalysis. The growth process promotes the division of one live cell to form two new live cells. A growing organism increases in size in all of its parts, rather than simply accumulating matter. Growth follows a preprogrammed pattern of development, which is inherited from the process of reproduction.