Population control

Population control is the practice of curtailing population increase, usually by reducing the birth rate. Surviving records from Ancient Greece document the first known examples of population control. These include the colonization movement, which saw Greek outposts being built across the Mediterranean and Black Sea basins to accommodate the excess population of individual states. An important example of mandated population control is China's one-child policy, in which having more than one child is made extremely unattractive. This has led to allegations that practices like infanticide, forced abortions, and forced sterilization are used as a result of the policy.
In ecology, population control is on occasions considered to be done solely by predators, diseases, parasites, and environmental factors. At many times human effects on animal and plant populations are also considered. Migrations of animals may be seen as a natural way of population control, for the food on land is more abundant on some seasons. The area of the migrations' start is left to reproduce the food supply for large mass of animals next time around. See also immigration.

Skyscraper

A skyscraper is a very tall, continuously habitable building. Although there is no official definition, a minimum height of approximately 150 meters or 500 feet is often used as a criterion for a building to qualify as a skyscraper. Other criteria like shape and appearance may also affect whether or not a building is considered a skyscraper. The city of Chicago is widely credited as the birth place of the skyscraper.
The word skyscraper was first applied to such buildings in the late 19th century, reflecting public amazement at the tall buildings being built in Chicago and New York City. The structural definition of the word skyscraper was refined later by architectural historians, based on engineering developments of the 1880s that had enabled construction of tall multi-story buildings. This definition was based on the steel skeleton—as opposed to constructions of load-bearing masonry, which passed their practical limit in 1891 with Chicago's Monadnock Building. Philadelphia's City Hall, completed in 1901, still holds claim as the world's tallest load-bearing masonry structure. The steel frame developed in stages of increasing self-sufficiency, with several buildings in Chicago and New York advancing the technology that allowed the steel frame to carry a building on its own. Today, however, many of the tallest skyscrapers are built more or less entirely with reinforced concrete. In the United States today, it is a loose convention to draw the lower limit on what is a skyscraper at 150 meters. Elsewhere, though, a shorter building will sometimes be referred to as a skyscraper, especially if it is said to "dominate" its surroundings. Thus, calling a building a skyscraper will usually, but not always, imply pride and achievement.
Originally, skyscraper was a nautical term for a tall mast or sail on a sailing ship. A skyscraper taller than 300 meters may sometimes be referred to as a super tall.
The somewhat arbitrary term skyscraper should not be confused with the slightly less arbitrary term high-rise, defined by the Emporis Data Committee as "a building which is 35 meters or greater in height, and is divided at regular intervals into occupiable floors" . All skyscrapers are high-rises, but only the tallest high-rises are skyscrapers. Habitability separates skyscrapers from towers and masts. Some structural engineers define a high-rise as any vertical construction for which wind is a more significant load factor than weight is.

Nokia Corporation is the most prolific maker of mobile phones and thus the world's largestte Espoo, Finland,Nokne ifrastructre and other telecommunications equipment for applications such as traditional voice telephony, ISDN, broadband access, prossional mobile rdio, voice over IP, wieless LAN, a line of digital terretrial television receivers an satellite receivers. Nokia provides mobile ommunication equipment for every major market and protocol.At one time in history Nokia was a major manufacturer of boots for the military. All three comanies were merged as Noia Corporation in 1967. The name Nokiaoriginated from the iver which flowed through the town of the same name. The town and river are named after a small black marten found in the regionIn the 1970s Nokia became more involved in te telecommunications industry by developing the Nokia DX 200, a digital switch for telephone exchanges. In the 1980s, Nokia offered a series of personal computers called MikroMikko , howeve, the operations were sold to Iternational Computers, Ltd. which later became part of Fujitsu; the personal cturing of as, divesting itself of other it, such as televisins and personal computers.Nokia's offiial corporate culture manifesto, he Nokia Way, emphasises speed and flexibility f decision making ina flt, networked rganization. Equal opportunities and openness are also stressed, along with management leadership and employee participation.Nokia is a progressive and forward-thinking mobile technoloy group spending millions on research and development

In Physics
Space is one of the few fundamental quantities in physics, meaning that it cannot be defined via other quantities because there is nothing more fundamental known at present. Thus, similar to the definition of other fundamental quantities, space is defined via measurement. Currently, the standard space interval, called a standard meter or simply meter, is defined as the distance traveled by light in a vacuum during a time interval of 1/299792458 of a second. This definition coupled with present definition of time makes our space-time to be Minkowski space and makes special relativity theory to be absolutely correct by definition.
In classical physics, space is a three-dimensional Euclidean space where any position can be described using three coordinates. Special and general relativity uses space-time rather than space; space-time is modeled as a four-dimensional space with the time axis being imaginary in special relativity and real in general relativity, and currently there are many theories which use more than four-dimensional spaces.
Before Einstein's work on relativistic physics, time and space were viewed as independent dimensions. Einstein's discoveries have shown that due to relativity of motion our space and time can be mathematically combined into one symmetric object — space-time.