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Tong Yang (mathematician)
Tong Yang () is a Chinese mathematician known for his contributions to the field of partial differential equations and kinetic theory. He has been serving as a Chair Professor of Mathematical Science in the Department of Applied Mathematics at The Hong Kong Polytechnic University (PolyU) since 2020. Previously, he held the position of President of The Hong Kong Mathematical Society from 2016 to 2020 in 2016-2020. Education Yang completed his Ph.D. in 1993 at the University of California, Davis in USA, after earning his bachelor's and master's degrees from Zhongshan University in 1987 and 1990, respectively. Research Yang's research focuses on partial differential equations and kinetic theory. In collaboration with Tai-Ping Liu, he introduced the Liu-Yang functional, which is used to evaluate the stability of BV solutions in systems of hyperbolic conservation laws. This work addressed significant challenges in the well-posedness theory for conservation laws and has applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partial Differential Equation
In mathematics, a partial differential equation (PDE) is an equation which involves a multivariable function and one or more of its partial derivatives. The function is often thought of as an "unknown" that solves the equation, similar to how is thought of as an unknown number solving, e.g., an algebraic equation like . However, it is usually impossible to write down explicit formulae for solutions of partial differential equations. There is correspondingly a vast amount of modern mathematical and scientific research on methods to numerically approximate solutions of certain partial differential equations using computers. Partial differential equations also occupy a large sector of pure mathematical research, in which the usual questions are, broadly speaking, on the identification of general qualitative features of solutions of various partial differential equations, such as existence, uniqueness, regularity and stability. Among the many open questions are the existence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google Search. In January 2024, YouTube had more than 2.7billion monthly active users, who collectively watched more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and , there were approximately 14.8billion videos in total. On November 13, 2006, YouTube was purchased by Google for $1.65 billion (equivalent to $ billion in ). Google expanded YouTube's business model of generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by and for YouTube. It also offers YouTube Premium, a paid subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Missing (living People)
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Members Of The European Academy Of Sciences And Arts
Member may refer to: * Military jury, referred to as "Members" in military jargon * Element (mathematics), an object that belongs to a mathematical set * In object-oriented programming, a member of a class ** Field (computer science), entries in a database ** Member variable, a variable that is associated with a specific object * Limb (anatomy), an appendage of the human or animal body ** Euphemism for penis * Structural component of a truss, connected by nodes * User (computing), a person making use of a computing service, especially on the Internet * Member (geology), a component of a geological formation * Member of parliament * The Members The Members is a British punk rock, punk band that originated in Camberley, Surrey, England. In the UK, they are best known for their single "The Sound of the Suburbs", reaching No. 12 in the UK Singles Chart in 1979, and in Australia, "Radio" ..., a British punk rock band * Meronymy, a semantic relationship in linguistics * Church m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Mathematicians
Mathematics emerged independently in China by the 11th century BCE. The Chinese independently developed a real number system that includes significantly large and negative numbers, more than one numeral system (binary and decimal), algebra, geometry, number theory and trigonometry. Since the Han dynasty, as diophantine approximation being a prominent numerical method, the Chinese made substantial progress on polynomial evaluation. Algorithms like regula falsi and expressions like simple continued fractions are widely used and have been well-documented ever since. They deliberately find the principal ''n''th root of positive numbers and the roots of equations. The major texts from the period, ''The Nine Chapters on the Mathematical Art'' and the ''Book on Numbers and Computation'' gave detailed processes for solving various mathematical problems in daily life. All procedures were computed using a counting board in both texts, and they included inverse elements as well as Euclide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Grants Committee (Hong Kong)
The University Grants Committee of Hong Kong is a non-statutory advisory committee responsible for counselling the Government of Hong Kong on the financing and expansion needs of its subsidised higher education institutions. Appointed by the Chief Executive of Hong Kong, its members consist of local and overseas academics, university administrators, and community leaders. List There are eight universities funded by the University Grants Committee: * University of Hong Kong * Chinese University of Hong Kong * Hong Kong University of Science and Technology * Hong Kong Polytechnic University * City University of Hong Kong * Hong Kong Baptist University * Lingnan University * Education University of Hong Kong Quality Assurance Council The Quality Assurance Council (QAC), established in April 2007, is a semi-autonomous non-statutory body operating under the purview of the Committee to facilitate quality assurance of all programmes at the levels of sub-degree, first degree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boltzmann Equation
The Boltzmann equation or Boltzmann transport equation (BTE) describes the statistical behaviour of a thermodynamic system not in a state of equilibrium; it was devised by Ludwig Boltzmann in 1872.Encyclopaedia of Physics (2nd Edition), R. G. Lerner, G. L. Trigg, VHC publishers, 1991, ISBN (Verlagsgesellschaft) 3-527-26954-1, ISBN (VHC Inc.) 0-89573-752-3. The classic example of such a system is a fluid with temperature gradients in space causing heat to flow from hotter regions to colder ones, by the random but biased transport of the particles making up that fluid. In the modern literature the term Boltzmann equation is often used in a more general sense, referring to any kinetic equation that describes the change of a macroscopic quantity in a thermodynamic system, such as energy, charge or particle number. The equation arises not by analyzing the individual positions and momenta of each particle in the fluid but rather by considering a probability distribution for the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation Law
In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc. These quantities are conserved in certain classes of physics processes, but not in all. A local conservation law is usually expressed mathematically as a continuity equation, a partial differential equation which gives a relation between the amount of the quantity and the "transport" of that quantity. It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume. From Noether's theorem, every differe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tai-Ping Liu
Tai-Ping Liu (; born 18 November 1945) is a Taiwanese mathematician specializing in partial differential equations. Education and career Liu earned his bachelor's degree in mathematics in 1968 from National Taiwan University, his master's degree in 1970 from Oregon State University, and his Ph.D. in 1973 from University of Michigan. His dissertation, supervised by Joel Smoller, was titled, "Riemann problem for general 2 × 2 systems of conservation laws". After receiving his doctorate, Liu was a professor at University of Maryland, from 1988 at New York University and from 1990 at Stanford University, where he is now retired. Since 2000 he has been a Distinguished Research Fellow at the Academia Sinica. He was elected a Fellow of the American Mathematical Society in 2012. His research deals with nonlinear partial differential equations, hyperbolic conservation laws, shock waves, the Boltzmann equation, and equations of gas dynamics. He is the author or coauthor of over 140 rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academia Europaea
The Academia Europaea is a pan-European Academy of humanities, letters, law, and sciences. The Academia was founded in 1988 as a functioning Europe-wide Academy that encompasses all fields of scholarly inquiry. It acts as co-ordinator of European interests in national research agencies. History The concept of a 'European Academy of Sciences' was raised at a meeting in Paris of the European Ministers of Science in 1985. The initiative was taken by the Royal Society (United Kingdom) which resulted in a meeting in London in June 1986 of Arnold Burgen (United Kingdom), Hubert Curien (France), Umberto Colombo (Italy), David Magnusson (Sweden), Eugen Seibold (Germany) and Ruurd van Lieshout (the Netherlands) – who agreed to the need for a new body. The meeting also included Brian Flowers and John Kendrew. Another, larger meeting took place in October 1986 with participants representing some countries in the Council of Europe and was in support for the development of a Eur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University (PolyU or HKPU) is a public university, public research university in Hung Hom, Kowloon, Hong Kong. The university is one of the eight University Grants Committee (Hong Kong), government-funded degree-granting Higher education in Hong Kong, tertiary institutions in Hong Kong. Founded in 1937 as the first Government Trade School, it is the first institution to provide technical education in Hong Kong. In 1994, the Legislative Council of Hong Kong passed a bill which granted the former Hong Kong Polytechnic official university status. PolyU consists of 8 faculties and schools, offering programmes covering applied science, business, construction, environment, engineering, social science, health, humanities, design, hotel and tourism management. The university offers over 160 taught programmes for more than 25,800 students every year. History Government Trade School (1937–1947) In 1937, the Tang Shiu Kin Victoria Government Secondary Scho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The World Academy Of Sciences
The World Academy of Sciences for the advancement of science in developing countries (TWAS) is a North–south research partnerships, merit-based science academy established for developing countries, uniting more than 1,400 scientists in some 100 countries. Its principal aim is to promote scientific capacity and excellence for sustainable development in Developing country, developing countries. It was formerly known as the ''Third World Academy of Sciences''. Its headquarters is located on the premises of the International Centre for Theoretical Physics in Trieste, Italy. History TWAS was founded in 1983 under the leadership of the Nobel Laureate Abdus Salam of Pakistan by a group of distinguished scientists who were determined to do something about the dismal state of scientific research in developing countries. * Although developing countries account for 80% of the world's population, only 28% of the world's scientists hail from these countries. This fact reflects the lack of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
