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Massachusetts Green High Performance Computing Center
Massachusetts Green High Performance Computing Center (MGHPCC) is an intercollegiate high-performance computing facility located in Holyoke, Massachusetts, connected to that city's municipal fiber grid and powered by Holyoke Gas and Electric via the and Dam. MGHPCC is a joint venture of Boston University, Harvard, MIT, Northeastern, and the University of Massachusetts system; the facility holds the capacity for hundreds of thousands of cores in clusters provided by its affiliates. For example, as of 2016 one cluster used by UMass contained a network of 14,376 cores, both Intel and AMD, and more than 1.1 petabytes of on-site storage on an FDR Infiniband network. The facility maintains capacity for regular expansion, with key partners investing capability upgrades in the current building and more than 4 acres of additional undeveloped space. History The Center was first planned in early 2009 in joint discussions between MIT and UMass, with UMass President Jack M. Wilson being a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Science
Physical science is a branch of natural science that studies non-living systems, in contrast to life science. It in turn has many branches, each referred to as a "physical science", together called the "physical sciences". Definition Physical science can be described as all of the following: * A branch of science (a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe)."... modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions." —p.vii, J. L. Heilbron, (2003, editor-in-chief). ''The Oxford Companion to the History of Modern Science''. New York: Oxford University Press. . ** A branch of natural science – natura ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holyoke Gas And Electric
Holyoke Gas & Electric (HG&E), formally known as the City of Holyoke Gas & Electric Department (HGED), is a municipal electric, gas, and telecommunications utility primarily serving Holyoke and Southampton, Massachusetts, one of two in Massachusetts which provide all three services. Founded in 1902 with the purchase of gas and electric plants from the Holyoke Water Power Company, the municipal corporation launched its first fiber optics communications services in 1997. On December 14, 2001 the City of Holyoke purchased the majority of the remaining assets and operations of the Holyoke Water Power Company from Northeast Utilities and as a result the municipal utility assumed control of the Holyoke Dam and Canal System and an electric distribution system serving industrial electric customers in the flats neighborhood. The utility discontinued district steam service to conserve energy used in aging infrastructure in September 2010. Using hydroelectric power generation in tandem with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Resilience
In ecology, resilience is the capacity of an ecosystem to respond to a perturbation or disturbance by resisting damage and recovering quickly. Such perturbations and disturbances can include stochastic events such as fires, flooding, windstorms, insect population explosions, and human activities such as deforestation, fracking of the ground for oil extraction, pesticide sprayed in soil, and the introduction of exotic plant or animal species. Disturbances of sufficient magnitude or duration can profoundly affect an ecosystem and may force an ecosystem to reach a threshold beyond which a different regime of processes and structures predominates. When such thresholds are associated with a critical or bifurcation point, these regime shifts may also be referred to as critical transitions. Human activities that adversely affect ecological resilience such as reduction of biodiversity, exploitation of natural resources, pollution, land use, and anthropogenic climate chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars by being less collimated, although stellar winds are not generally spherically symmetric. Different types of stars have different types of stellar winds. Post- main-sequence stars nearing the ends of their lives often eject large quantities of mass in massive ( \scriptstyle \dot > 10^ solar masses per year), slow (v = 10 km/s) winds. These include red giants and supergiants, and asymptotic giant branch stars. These winds are understood to be driven by radiation pressure on dust condensing in the upper atmosphere of the stars. Young T Tauri stars often have very powerful stellar winds. Massive stars of types O and B have stellar winds with lower mass loss rates (\scriptstyle \dot 1–2000 km/s). Such winds are driven by radiation pressure on the resonance absorption lines of heavy elements such as carbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Geometry
Molecular geometry is the three-dimensional space, three-dimensional arrangement of the atoms that constitute a molecule. It includes the general shape of the molecule as well as bond lengths, bond angles, torsional angles and any other geometrical parameters that determine the position of each atom. Molecular geometry influences several properties of a substance including its Reactivity (chemistry), reactivity, Chemical polarity, polarity, Phase (matter), phase of matter, color, magnetism and biological activity. The angles between bonds that an atom forms depend only weakly on the rest of molecule, i.e. they can be understood as approximately local and hence Transferability (chemistry), transferable properties. Determination The molecular geometry can be determined by various spectroscopy, spectroscopic methods and diffraction methods. Infrared spectroscopy, IR, Rotational spectroscopy, microwave and Raman spectroscopy can give information about the molecule geometry from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet2
Internet2 is a not-for-profit United States computer networking consortium led by members from the research and education communities, industry, and government. The Internet2 consortium administrative headquarters are located in Ann Arbor, Michigan, with offices in Washington, D.C. and Emeryville, California. As of November 2013, Internet2 has over 500 members including 251 institutions of higher education, 9 partners and 76 members from industry, over 100 research and education networks or connector organizations, and 67 affiliate members. Internet2 operates the Internet2 Network, an Internet Protocol network using optical fiber that delivers network services for research and education, and provides a secure network testing and research environment. In late 2007, Internet2 began operating its newest dynamic circuit network, the Internet2 DCN, an advanced technology that allows user-based allocation of data circuits over the fiber-optic network. The Internet2 Network, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Holyoke Location Map Municipal Fiber Network
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topping Out
In building construction, topping out (sometimes referred to as topping off) is a builders' rite traditionally held when the last beam (or its equivalent) is placed atop a structure during its construction. Nowadays, the ceremony is often parlayed into a media event for public relations purposes. It has since come to mean more generally finishing the structure of the building, whether there is a ceremony or not. Also commonly used to determine the amount of wind on the top of the structure. History The practice of "topping out" a new building can be traced to the ancient Scandinavian religious rite of placing a tree atop a new building to appease the tree-dwelling spirits displaced in its construction. Long an important component of timber frame building, it migrated initially to England and Northern Europe, thence to the Americas. A tree or leafy branch is placed on the topmost wood or iron beam, often with flags and streamers tied to it. A toast is usually drunk and sometimes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack M
Jack may refer to: Places * Jack, Alabama, US, an unincorporated community * Jack, Missouri, US, an unincorporated community * Jack County, Texas, a county in Texas, USA People and fictional characters * Jack (given name), a male given name, including a list of people and fictional characters with the name * Jack (surname), including a list of people with the surname * Jack (Tekken), multiple fictional characters in the fighting game series ''Tekken'' * Jack the Ripper, an unidentified British serial killer active in 1888 * Wolfman Jack (1938–1995), a stage name of American disk jockey Robert Weston Smith * New Jack, a stage name of Jerome Young (1963-2021), an American professional wrestler * Spring-heeled Jack, a creature in Victorian-era English folklore Animals and plants Fish * Carangidae generally, including: ** Almaco jack ** Amberjack ** Bar jack **Black jack (fish) ** Crevalle jack **Giant trevally or ronin jack **Jack mackerel ** Leather jack ** Yellow jack *Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infiniband
InfiniBand (IB) is a computer networking communications standard used in high-performance computing that features very high throughput and very low latency. It is used for data interconnect both among and within computers. InfiniBand is also used as either a direct or switched interconnect between servers and storage systems, as well as an interconnect between storage systems. It is designed to be scalable and uses a switched fabric network topology. By 2014, it was the most commonly used interconnect in the TOP500 list of supercomputers, until about 2016. Mellanox (acquired by Nvidia) manufactures InfiniBand host bus adapters and network switches, which are used by large computer system and database vendors in their product lines. As a computer cluster interconnect, IB competes with Ethernet, Fibre Channel, and Intel Omni-Path. The technology is promoted by the InfiniBand Trade Association. History InfiniBand originated in 1999 from the merger of two competing des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intel
Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 series of instruction sets, the instruction sets found in most personal computers (PCs). Delaware General Corporation Law, Incorporated in Delaware, Intel ranked No. 45 in the 2020 Fortune 500, ''Fortune'' 500 list of the largest United States corporations by total revenue for nearly a decade, from 2007 to 2016 fiscal years. Intel supplies microprocessors for List of computer system manufacturers, computer system manufacturers such as Acer Inc., Acer, Lenovo, HP Inc., HP, and Dell Technologies, Dell. Intel also manufactures motherboard chipsets, network interface controllers and integrated circuits, flash memory, Graphics processing unit, graphics chips, Embedded system, embedded processors and other devices related to com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
