|
Didier Sornette
Didier Sornette (born 25 June 1957 in Paris) is a French researcher studying subjects including complex systems and risk management. He is Professor on the Chair of Entrepreneurial Risks at the ETH Zurich, Swiss Federal Institute of Technology Zurich (ETH Zurich) and is also a professor of the Swiss Finance Institute, He was previously a Professor of Geophysics at UCLA, Los Angeles California (1996–2006) and a Research Professor at the French National Centre for Scientific Research (1981–2006). Theory of earthquakes and fault networks With his long-time collaborator Dr. Guy Ouillon, Sornette has been leading a research group on the “Physics of earthquakes” over the last 25 years. The group is active in the modelling of earthquakes, landslides, and other natural hazards, combining concepts and tools from statistical physics, statistics, tectonics, seismology and more. First located at the Laboratory of Condensed Matter Physics (University of Nice, France), then at the Eart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of cities in the European Union by population within city limits, fourth-most populous city in the European Union and the List of cities proper by population density, 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, Fashion capital, fashion, and gastronomy. Because of its leading role in the French art, arts and Science and technology in France, sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PhysOrg
Phys.org is an online science, research and technology news aggregator which re-publishes press releases and stories from news agencies (a business model known as churnalism). In 2012, PhysOrg.com was changed to Phys.org. , Phys.org was posting an average of 98 items per day. It is part of the Science X network of websites, headquartered on the Isle of Man. See also * EurekAlert! * Science Daily ''ScienceDaily'' is an American website launched in 1995 that aggregates press releases and publishes lightly edited press releases (a practice called churnalism) about science, similar to Phys.org and EurekAlert!. History The site was f ... References External links * British news websites Technology websites British technology news websites News aggregators British science websites Internet properties established in 2004 {{news-website-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alan Fiske
Alan Page Fiske (born 1947) is an American professor of anthropology at the University of California, Los Angeles, known for studying the nature of human relationships and cross-cultural variations between them. Early life and education Fiske was born in 1947. His father, Donald W. Fiske, was a professor of psychology at the University of Chicago. His sister, Susan Fiske, is a social psychologist who is the Eugene Higgins Professor of Psychology and Public Affairs at Princeton University. Fiske earned a bachelor's degree, '' cum laude'', in social relations from Harvard College in 1968. He went on to earn a master's degree in 1973 and a Ph.D. in 1985, both from the University of Chicago, focusing on cross-cultural problems and human development.Curriculum vitae Alan Fiske, Social Sciences div ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roy Baumeister
Roy Frederick Baumeister (; born May 16, 1953) is an American social psychologist who is known for his work on the self, social rejection, belongingness, sexuality and sex differences, self-control, self-esteem, self-defeating behaviors, motivation, aggression, consciousness, and free will. Education and academia Baumeister earned his A.B. from Princeton University and his M.A. from Duke University. He returned to Princeton University with his mentor Edward E. Jones and earned his Ph.D. from the university's Department of Psychology in 1978. Baumeister then taught at Case Western Reserve University from 1979 to 2003, serving as a professor of psychology and later liberal arts. He later worked at Florida State University as the Francis Eppes Eminent Scholar and head of the social psychology graduate program. At FSU, Baumeister worked in the psychology department, teaching classes and graduate seminars on social and evolutionary psychology. In 2016 he moved to the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Fehr
Ernst Fehr (born 21 June 1956 in Hard, Austria) is an Austrian-Swiss behavioral economist and neuroeconomist and a Professor of Microeconomics and Experimental Economic Research, as well as the vice chairman of the Department of Economics at the University of Zürich, Switzerland. His research covers the areas of the evolution of human cooperation and sociality, in particular fairness, reciprocity and bounded rationality. He is also well known for his important contributions to the new field of neuroeconomics, as well as to behavioral economics, behavioral finance and experimental economics. According to IDEAS/REPEC, he is the second-most influential German-speaking economist, and is ranked at 75th globally. In 2010 Ernst Fehr founded, together with his brother, Gerhard Fehr, FehrAdvice & Partners, the first globally operating consultancy firm completely dedicated to behavioral economics. In 2016, Fehr was ranked as the most influential economist in Germany, Austria, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane Rocket
Ariane is a series of European civilian expendable launch vehicles for space launch use. The name comes from the French spelling of the mythological character Ariadne. France first proposed the Ariane project and it was officially agreed upon at the end of 1973 after discussions between France, Germany and the UK. The project was Western Europe's second attempt at developing its own launcher following the unsuccessful Europa project. The Ariane project was code-named L3S (the French abbreviation for third-generation substitution launcher). The European Space Agency (ESA) charged Aérospatiale (whose former assets now form Airbus) with the development of all Ariane launchers and of the testing facilities, while Arianespace handled production, operations and marketing after its creation in 1980. Arianespace launches Ariane rockets from the Guiana Space Centre at Kourou in French Guiana. As a result of the merger in 2000 that founded Airbus, the new corporation's space branch an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Financial Bubble
Finance refers to monetary resources and to the study and Academic discipline, discipline of money, currency, assets and Liability (financial accounting), liabilities. As a subject of study, is a field of Business administration, Business Administration wich study the planning, organizing, leading, and controlling of an organization's resources to achieve its goals. Based on the scope of financial activities in financial systems, the discipline can be divided into Personal finance, personal, Corporate finance, corporate, and public finance. In these financial systems, assets are bought, sold, or traded as financial instruments, such as Currency, currencies, loans, Bond (finance), bonds, Share (finance), shares, stocks, Option (finance), options, Futures contract, futures, etc. Assets can also be banked, Investment, invested, and Insurance, insured to maximize value and minimize loss. In practice, Financial risk, risks are always present in any financial action and entities. Due ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicorn (finance)
In business, a unicorn is a startup company Valuation (finance), valued at over US$1 billion which is privately owned and not listed on a share market. The term was first published in 2013, coined by venture capitalist Aileen Lee, choosing the unicorn, mythical animal to represent the statistical rarity of such successful ventures. Many unicorns saw their valuations fall in 2022 as a result of an economic slowdown caused by the COVID-19 pandemic, an increase in interest rates causing the cost of borrowing to grow, increased market volatility (finance), volatility, stricter regulatory scrutiny and underperformance. CB Insights identified 1,248 unicorns worldwide . Unicorns with over $10 billion in valuation have been designated as "decacorn" companies. For private companies valued over $100 billion, the terms "centicorn" and "hectocorn" have been used. History Aileen Lee originated the term "unicorn" in a 2013 ''TechCrunch'' article, "Welcome To The Unicorn Club: Learn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logistic Function
A logistic function or logistic curve is a common S-shaped curve ( sigmoid curve) with the equation f(x) = \frac where The logistic function has domain the real numbers, the limit as x \to -\infty is 0, and the limit as x \to +\infty is L. The exponential function with negated argument (e^ ) is used to define the standard logistic function, depicted at right, where L=1, k=1, x_0=0, which has the equation f(x) = \frac and is sometimes simply called the sigmoid. It is also sometimes called the expit, being the inverse function of the logit. The logistic function finds applications in a range of fields, including biology (especially ecology), biomathematics, chemistry, demography, economics, geoscience, mathematical psychology, probability, sociology, political science, linguistics, statistics, and artificial neural networks. There are various generalizations, depending on the field. History The logistic function was introduced in a series of three papers by Pier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-organization
Self-organization, also called spontaneous order in the social sciences, is a process where some form of overall order and disorder, order arises from local interactions between parts of an initially disordered system. The process can be spontaneous when sufficient energy is available, not needing control by any external agent. It is often triggered by seemingly random Statistical fluctuations, fluctuations, amplified by positive feedback. The resulting organization is wholly decentralized, :wikt:distribute, distributed over all the components of the system. As such, the organization is typically Robustness, robust and able to survive or self-healing material, self-repair substantial perturbation theory, perturbation. Chaos theory discusses self-organization in terms of islands of predictability in a sea of chaotic unpredictability. Self-organization occurs in many physics, physical, chemistry, chemical, biology, biological, robotics, robotic, and cognitive systems. Examples of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omori Law
In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according to a consistent pattern. In some earthquakes the main rupture happens in two or more steps, resulting in multiple main shocks. These are known as doublet earthquakes, and in general can be distinguished from aftershocks in having similar magnitudes and nearly identical seismic waveforms. Distribution of aftershocks Most aftershocks are located over the full area of fault rupture and either occur along the fault plane itself or along other faults within the volume affected by the strain associated with the main shock. Typically, aftershocks are found up to a distance equal to the rupture length away from the fault plane. The pattern o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Law
In statistics, a power law is a Function (mathematics), functional relationship between two quantities, where a Relative change and difference, relative change in one quantity results in a relative change in the other quantity proportional to the change raised to a constant exponent: one quantity varies as a power of another. The change is independent of the initial size of those quantities. For instance, the area of a square has a power law relationship with the length of its side, since if the length is doubled, the area is multiplied by 2, while if the length is tripled, the area is multiplied by 3, and so on. Empirical examples The distributions of a wide variety of physical, biological, and human-made phenomena approximately follow a power law over a wide range of magnitudes: these include the sizes of craters on the moon and of solar flares, cloud sizes, the foraging pattern of various species, the sizes of activity patterns of neuronal populations, the frequencies of words ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
