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George Cowan
George Arthur Cowan (; February 15, 1920 – April 20, 2012) was an American physical chemist, a businessman and philanthropist. Education He conducted early research in the Manhattan Project. George served 39 years at Los Alamos National Laboratory as director of chemistry, associate director of research and senior laboratory fellow. He participated in founding the Santa Fe Opera in 1953. He founded the Los Alamos National Bank in 1963 to fund housing for Los Alamos employees and served for 30 years as its chair. He was also the driving influence in founding the Santa Fe Institute together with Nobel Prize winner Murray Gell-Mann and others in 1984, based upon his recognition of the need for a place where scientists could be offered a broader curriculum for "a kind of twenty-first century Renaissance man" and associated research. A graduate of Worcester Polytechnic Institute (bachelor of science in chemistry) and Carnegie Institute of Technology (doctorate of science), P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Worcester, Massachusetts
Worcester ( , ) is the List of municipalities in Massachusetts, second-most populous city in the U.S. state of Massachusetts and the list of United States cities by population, 113th most populous city in the United States. Named after Worcester, England, the city had 206,518 people at the 2020 United States census, 2020 census, also making it the second-List of cities in New England by population, most populous city in New England, after Boston, Massachusetts. Worcester is about west of Boston, east of Springfield, Massachusetts, and north-northwest of Providence, Rhode Island. Because it is near the geographic center of Massachusetts, Worcester is known as the "Heart of the Commonwealth"; a heart is the official symbol of the city. Worcester is the historical county seat, seat of Worcester County, Massachusetts, Worcester County. Worcester developed as an industrial city in the 19th century because the Blackstone Canal and railways facilitated the import of raw materials and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element; it has chemical symbol, symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactive decay, radioactively decays, usually by emitting an alpha particle. The half-life of this decay varies between 159,200 and 4.5 billion years for different isotopes of uranium, isotopes, making them useful for dating the age of the Earth. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordial nuclide, primordially occurring elements. Its density is about 70% higher than that of lead and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few Parts-per notation#Parts-per expressions, parts per million in soil, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huffington Post
''HuffPost'' (''The Huffington Post'' until 2017, itself often abbreviated as ''HPo'') is an American progressive news website, with localized and international editions. The site offers news, satire, blogs, and original content, and covers politics, business, entertainment, environment, technology, popular media, lifestyle, culture, comedy, healthy eating, young women's interests, and local news featuring columnists. It was created to provide a progressive alternative to conservative news websites such as the Drudge Report. The site contains its own content and user-generated content via video blogging, audio, and photo. In 2012, the website became the first commercially run United States digital media enterprise to win a Pulitzer Prize. Founded by Arianna Huffington, Andrew Breitbart, Kenneth Lerer, and Jonah Peretti, the site was launched on May 9, 2005, as a counterpart to the Drudge Report. In March 2011, it was acquired by AOL for US$315 million, with Arian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computational Complexity Theory
In theoretical computer science and mathematics, computational complexity theory focuses on classifying computational problems according to their resource usage, and explores the relationships between these classifications. A computational problem is a task solved by a computer. A computation problem is solvable by mechanical application of mathematical steps, such as an algorithm. A problem is regarded as inherently difficult if its solution requires significant resources, whatever the algorithm used. The theory formalizes this intuition, by introducing mathematical models of computation to study these problems and quantifying their computational complexity, i.e., the amount of resources needed to solve them, such as time and storage. Other measures of complexity are also used, such as the amount of communication (used in communication complexity), the number of logic gate, gates in a circuit (used in circuit complexity) and the number of processors (used in parallel computing). O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of New Mexico Press
The University of New Mexico Press (UNMP) is a university press at the University of New Mexico. It was founded in 1929 and published pamphlets for the university in its early years before expanding into quarterlies and books. Its administrative offices are in the Office of Research (Building 26), on the campus of UNM in Albuquerque. The University of New Mexico Press specializes in scholarly and trade books on subjects including Southwestern and Western American history and literature, archaeology and anthropology, Latin American and border studies, Native American studies, travel and recreation, and children's books. UNM Press publishes the Dialagos Series in Latin American Studies, the Mary Burritt Christiansen Poetry Series, and the Barbara Guth Worlds of Wonder Science Series for Young Readers. Domestic distribution for the press is currently provided by the University of North Carolina Press's Longleaf Services. The early years On June 1, 1929, the Board of Regents o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complex System
A complex system is a system composed of many components that may interact with one another. Examples of complex systems are Earth's global climate, organisms, the human brain, infrastructure such as power grid, transportation or communication systems, complex software and electronic systems, social and economic organizations (like cities), an ecosystem, a living Cell (biology), cell, and, ultimately, for some authors, the entire universe. The behavior of a complex system is intrinsically difficult to model due to the dependencies, competitions, relationships, and other types of interactions between their parts or between a given system and its environment. Systems that are "Complexity, complex" have distinct properties that arise from these relationships, such as Nonlinear system, nonlinearity, emergence, spontaneous order, Complex adaptive system, adaptation, and Feedback, feedback loops, among others. Because such systems appear in a wide variety of fields, the commonalities am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citicorp
Citigroup Inc. or Citi (Style (visual arts), stylized as citi) is an American multinational investment banking, investment bank and financial services company based in New York City. The company was formed in 1998 by the merger of Citicorp, the bank holding company for Citibank, and The Travelers Companies, Travelers; Travelers was spun off from the company in 2002. Citigroup is the List of largest banks in the United States, third-largest banking institution in the United States by assets; alongside JPMorgan Chase, Bank of America, and Wells Fargo, it is one of the Big Four (banking)#United States, Big Four banking institutions of the United States. It is considered a Systemically important financial institution, systemically important bank by the Financial Stability Board, and is commonly cited as being "too big to fail". It is one of the eight global investment banks in the Bulge Bracket. Citigroup is ranked 36th on the Fortune 500, ''Fortune'' 500, and was ranked #24 in Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Energy
The United States Department of Energy (DOE) is an executive department of the U.S. federal government that oversees U.S. national energy policy and energy production, the research and development of nuclear power, the military's nuclear weapons program, nuclear reactor production for the United States Navy, energy-related research, and energy conservation. The DOE was created in 1977 in the aftermath of the 1973 oil crisis. It sponsors more physical science research than any other U.S. federal agency, the majority of which is conducted through its system of National Laboratories. The DOE also directs research in genomics, with the Human Genome Project originating from a DOE initiative. The department is headed by the secretary of energy, who reports directly to the president of the United States and is a member of the Cabinet. The current secretary of energy is Chris Wright, who has served in the position since February 2025. The department's headquarters are in sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Science Foundation
The U.S. National Science Foundation (NSF) is an Independent agencies of the United States government#Examples of independent agencies, independent agency of the Federal government of the United States, United States federal government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National Institutes of Health. With an annual budget of about $9.9 billion (fiscal year 2023), the NSF funds approximately 25% of all federally supported basic research conducted by the List of American institutions of higher education, United States' colleges and universities. In some fields, such as mathematics, computer science, economics, and the social sciences, the NSF is the major source of federal backing. NSF's director and deputy director are appointed by the president of the United States and Advice and consent, confirmed by the United States Senate, whereas the 24 president-appointed members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiegel Catalog
Spiegel was an United States of America, American direct marketing retailer founded in 1865 by Joseph Spiegel. Spiegel published a catalog, like its competitors Sears, Aldens, and Montgomery Ward, which advertised various brands of apparel, accessories, and footwear, as well as housewares, toys, tools, firearms, and electronics. Their house brand, company brands included Newport News, Shape FX, and Old Kraftsman, among others. They also operated brick-and-mortar stores. Spiegel delivered its first mail order catalog in 1905 and by 1925, the retailer had 10 million customers. Spiegel's buyers, who went to Paris fashion shows, introduced American women to European fashion Fad, trends. After encountering financial difficulty in the early 2000s, the company was purchased by Lynn Tilton, Patriarch Partners and focused on women's style and fashion products. The catalog was eventually discontinued in favor of digital marketing. In 2019, the company website was removed without notice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Stalin
Joseph Vissarionovich Stalin (born Dzhugashvili; 5 March 1953) was a Soviet politician and revolutionary who led the Soviet Union from 1924 until Death and state funeral of Joseph Stalin, his death in 1953. He held power as General Secretary of the Communist Party of the Soviet Union, General Secretary of the Communist Party from 1922 to 1952 and as the fourth Premier of the Soviet Union, premier from 1941 until his death. He initially governed as part of a Collective leadership in the Soviet Union, collective leadership, but Joseph Stalin's rise to power, consolidated power to become an absolute dictator by the 1930s. Stalin codified the party's official interpretation of Marxism as Marxism–Leninism, while the totalitarian political system he created is known as Stalinism. Born into a poor Georgian family in Gori, Georgia, Gori, Russian Empire, Stalin attended the Tiflis Theological Seminary before joining the Marxist Russian Social Democratic Labour Party. He raised f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Bethe
Hans Albrecht Eduard Bethe (; ; July 2, 1906 – March 6, 2005) was a German-American physicist who made major contributions to nuclear physics, astrophysics, quantum electrodynamics and solid-state physics, and received the Nobel Prize in Physics in 1967 for his work on the theory of stellar nucleosynthesis. For most of his career, Bethe was a professor at Cornell University.James C. Keck Collected Works and Biography () has the class notes taken by one of Bethe's students at Cornell from the graduate courses on Nuclear Physics and on Applications of Quantum Mechanics he taught in the spring of 1947. In 1931, Bethe developed the Bethe ansatz, which is a method for finding the exact solutions for the Eigenvalue, eigenvalues and Eigenvector, eigenvectors of certain one-dimensional quantum many-body models. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
