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Vladimir Pletser
Vladimir Pletser (born 28 February 1956) is Visiting Professor – Scientific Adviser at the Technology and Engineering Centre for Space Utilization (CSU) of the Chinese Academy of Sciences in Beijing, China, since April 2016. He supports the preparation of scientific experiments in microgravity for the future Chinese Space Station and for aircraft parabolic flights. He worked previously from 1985 till early 2016 as senior Physicist-Engineer at the European Space Research and Technology Centre (ESTEC) of ESA. He is an expert in microgravity during aircraft parabolic flights for which he holds a world record. He is known as ‘Mister Parabolic Flights’, ‘Mister Parabolas’, ‘Homo Parabolicus’ or ‘Mister Microgravity’. An astronaut candidate for Belgium since 1991, he spent two months in training in 1995 at NASA’s Johnson Space Center in Houston. Selected by the Mars Society in 2001, he participated in three international campaigns of crewed Mars mission simulatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photo VP In PF DC9 In 1995
A photograph (also known as a photo, image, or picture) is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor, such as a CCD or a CMOS chip. Most photographs are now created using a smartphone/camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see. The process and practice of creating such images is called photography. Etymology The word ''photograph'' was coined in 1839 by Sir John Herschel and is based on the Greek φῶς (''phos''), meaning "light," and γραφή (''graphê''), meaning "drawing, writing," together meaning "drawing with light." History The first permanent photograph, a contact-exposed copy of an engraving, was made in 1822 using the bitumen-based "heliography" process developed by Nicéphore Niépce. The first photographs of a real-world scene, made using a camera obscura, followed a few years later at Le Gras, Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgian Physical Society
The Belgian Physical Society (BPS) ( nl, Belgische Natuurkundige Vereniging and french: link=no, Société Belge de Physique) is the national physical society of Belgium, member of the European Physical Society. As a national scientific charity, its goal is to promote physics, advance physics education & research and support physicists in Belgium. History The Belgian Physical Society was founded on 16 February 1929 at the University Foundation, following an initiative of the national committee of physics. Its first president was the spectroscopist A. de Hemptinne, and the first vice-president was Th. De Donder, who contributed i.e., to the field of general relativity. The early archives of the society were lost during the second world war, when its activities were suspended. The rebirth of the BPS took place in 1949 under the presidency of Charles Manneback, and on 26 December 1962, the BPS became an association without lucrative purpose. In 1950, the society created its first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zaire
Zaire (, ), officially the Republic of Zaire (french: République du Zaïre, link=no, ), was a Congolese state from 1971 to 1997 in Central Africa that was previously and is now again known as the Democratic Republic of the Congo. Zaire was, by area, the third-largest country in Africa (after Sudan and Algeria), and the 11th-largest country in the world. With a population of over 23 million inhabitants, Zaire was the most-populous officially Francophone country in Africa, as well as one of the most populous in Africa. The country was a one-party totalitarian military dictatorship, run by Mobutu Sese Seko and his ruling Popular Movement of the Revolution party. Zaire was established following Mobutu's seizure of power in a military coup in 1965, following five years of political upheaval following independence from Belgium known as the Congo Crisis. Zaire had a strongly centralist constitution, and foreign assets were nationalized. The period is sometimes referred to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Democratic Republic Of The Congo
The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in Central Africa. It is bordered to the northwest by the Republic of the Congo, to the north by the Central African Republic, to the northeast by South Sudan, to the east by Uganda, Rwanda, and Burundi, and by Tanzania (across Lake Tanganyika), to the south and southeast by Zambia, to the southwest by Angola, and to the west by the South Atlantic Ocean and the Cabinda exclave of Angola. By area, it is the second-largest country in Africa and the 11th-largest in the world. With a population of around 108 million, the Democratic Republic of the Congo is the most populous officially Francophone country in the world. The national capital and largest city is Kinshasa, which is also the nation's economic center. Centered on the Cong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Kinshasa
The University of Kinshasa (french: Université de Kinshasa), commonly known as UNIKIN, is one of the three major universities in the Democratic Republic of the Congo, together with the University of Kisangani and University of Lubumbashi. Originally founded in 1954 as Lovanium University during Belgian colonial rule, the current university was established following the division of the National University of Zaire (UNAZA) in 1981. It is located in Kinshasa. The university had an enrollment of 29,554 and a faculty and research staff of 1,929 in the 2018–19 academic year, and currently has twelve academic divisions. Campus The university is located about south of central Kinshasa, in the suburb of Lemba. Many of the campus facilities have deteriorated and are in poor condition, or lack proper instructional tools - in 2003, the science library had as few as 300 titles in its collection. Since 2001, the university has hosted Cisco Academy, a joint project sponsored by the Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Simulation
Computer simulation is the process of mathematical modelling, performed on a computer, which is designed to predict the behaviour of, or the outcome of, a real-world or physical system. The reliability of some mathematical models can be determined by comparing their results to the real-world outcomes they aim to predict. Computer simulations have become a useful tool for the mathematical modeling of many natural systems in physics (computational physics), astrophysics, climatology, chemistry, biology and manufacturing, as well as human systems in economics, psychology, social science, health care and engineering. Simulation of a system is represented as the running of the system's model. It can be used to explore and gain new insights into new technology and to estimate the performance of systems too complex for analytical solutions. Computer simulations are realized by running computer programs that can be either small, running almost instantly on small devices, or large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Modelling
A mathematical model is a description of a system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in the natural sciences (such as physics, biology, earth science, chemistry) and engineering disciplines (such as computer science, electrical engineering), as well as in non-physical systems such as the social sciences (such as economics, psychology, sociology, political science). The use of mathematical models to solve problems in business or military operations is a large part of the field of operations research. Mathematical models are also used in music, linguistics, and philosophy (for example, intensively in analytic philosophy). A model may help to explain a system and to study the effects of different components, and to make predictions about behavior. Elements of a mathematical model Mathematical models can take many forms, including dynamical systems, statistical m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statistics
Statistics (from German language, German: ''wikt:Statistik#German, Statistik'', "description of a State (polity), state, a country") is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. In applying statistics to a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model to be studied. Populations can be diverse groups of people or objects such as "all people living in a country" or "every atom composing a crystal". Statistics deals with every aspect of data, including the planning of data collection in terms of the design of statistical survey, surveys and experimental design, experiments.Dodge, Y. (2006) ''The Oxford Dictionary of Statistical Terms'', Oxford University Press. When census data cannot be collected, statisticians collect data by developing specific experiment designs and survey sample (statistics), samples. Representative sampling as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Effect
The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. The reason for the Doppler effect is that when the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the crest of the previous wave. Therefore, each wave takes slightly less time to reach the observer than the previous wave. Hence, the time between the arrivals of successive wave crests at the observer is reduced, causing an increa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ionosphere
The ionosphere () is the ionized part of the upper atmosphere of Earth, from about to above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on Earth. History of discovery As early as 1839, the German mathematician and physicist Carl Friedrich Gauss postulated that an electrically conducting region of the atmosphere could account for observed variations of Earth's magnetic field. Sixty years later, Guglielmo Marconi received the first trans-Atlantic radio signal on December 12, 1901, in St. John's, Newfoundland (now in Canada) using a kite-supported antenna for reception. The transmitting station in Poldhu, Cornwall, used a spark-gap transmitter to produce a signal with a freq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Meteorological Institute
The Royal Meteorological Institute of Belgium (French: ''Institut Royal Météorologique de Belgique'' or IRM; Dutch: ''Koninklijk Meteorologisch Instituut van België'' or KMI) is a Belgian federal institute engaged in scientific research in the field of meteorology. The RMI depends on the Belgian Federal Science Policy Office (BELSPO). The institute is a member of the World Meteorological Organization, of the European Centre for Medium-Range Weather Forecasts, of EUMETSAT, and of the EIG Eumetnet. History In 1823, Adolphe Quetelet obtains from the Minister of Public Education the creation of an astronomical Observatory in Brussels. Meanwhile, are the first meteorological observations done with rudimentary instruments. In 1876, Jean-Charles Houzeau de Lehaie becomes the new director of the Observatory. Quickly, he plans to move the Observatory from the site of Sint-Joost-ten-Node to Ukkel, as well as making from astronomy and meteorology two separate departments. On Septemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Association Of Mars Explorers
Association may refer to: *Club (organization), an association of two or more people united by a common interest or goal *Trade association, an organization founded and funded by businesses that operate in a specific industry *Voluntary association, a body formed by individuals to accomplish a purpose, usually as volunteers Association in various fields of study *Association (archaeology), the close relationship between objects or contexts. *Association (astronomy), combined or co-added group of astronomical exposures *Association (chemistry) *Association (ecology), a type of ecological community *Genetic association, when one or more genotypes within a population co-occur *Association (object-oriented programming), defines a relationship between classes of objects *Association (psychology), a connection between two or more concepts in the mind or imagination *Association (statistics), a statistical relationship between two variables *File association, associates a file with a so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
