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Clearance Above
Clearance can refer to: Medicine * Renal clearance ratio, a relative measure of the speed at which a constituent of urine passes through the kidneys * Clearance (pharmacology), the rate at which a substance is removed or cleared from the body by the kidneys or in renal dialysis Engineering * Engineering tolerance, a physical distance or space between two components ** Hydraulic clearance, in hydraulic systems ** Clearance in civil engineering, including: *** The difference between the loading gauge and the structure gauge: the amount of space between the top of a rail car and the top of a tunnel or the bottom of a rail car and the top of rail *** Air draft, applies to bridges across navigable waterways *** Clearance car, a type of railroad car used to check clearances around the tracks * Ride height or ground clearance, the amount of space between the base of an automobile tire and the underside of the chassis Finance and trade Intellectual property * Collective rights managem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renal Clearance Ratio
The renal clearance ratio or fractional excretion is a relative measure of the speed at which a constituent of urine passes through the kidneys. It is defined by following equation: : clearance\ ratio\ of\ X = \frac * X is the analyte substance * Cx is the renal plasma clearance of X * Cin is the renal plasma clearance of inulin. Creatinine Creatinine (; ) is a breakdown product of creatine phosphate from muscle and protein metabolism. It is released at a constant rate by the body (depending on muscle mass). Biological relevance Serum creatinine (a blood measurement) is an impor ... is sometimes used instead of inulin as the reference substance; for example, the calcium-creatinine clearance ratio is used in an attempt to distinguish between different causes of a high plasma calcium concentration. It is easier to use creatinine rather than inulin as the comparator as creatinine is produced by the body, whereas inulin has to be intravenously infused. See also * Clearance (p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Market Clearing
In economics, market clearing is the process by which, in an economic market, the supply of whatever is traded is equated to the demand so that there is no excess supply or demand, ensuring that there is neither a surplus nor a shortage. The new classical economics assumes that in any given market, assuming that all buyers and sellers have access to information and that there is no "friction" impeding price changes, prices ''constantly'' adjust up or down to ensure market clearing. Mechanism and examples A market-clearing price is the price of a good or service at which the quantity supplied equals the quantity demanded, also called the equilibrium price. The theory claims that markets tend to move toward this price. Supply is fixed for a one-time sale of goods, so the market-clearing price is simply the maximum price at which all items can be sold. In a market where goods are produced and sold on an ongoing basis, the theory predicts that the market will move toward a price wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lowland Clearances
The Lowland Clearances were one of the results of the Scottish Agricultural Revolution, which changed the traditional system of agriculture which had existed in Lowland Scotland in the seventeenth century. Thousands of cottars and tenant farmers from the southern counties (Lowlands) of Scotland migrated from farms and small holdings they had occupied to the new industrial centres of Glasgow, Edinburgh and northern England or abroad, or remaining upon land though adapting to the Scottish Agricultural Revolution. History As farmland became more commercialised in Scotland during the 18th century, land was often rented through auctions. This led to an inflation of rents that priced many tenants out of the market. Furthermore, changes in agricultural practice meant the replacement of part-time labourer or subtenants (known as cottars, cottagers, or bondsmen) with full-time agricultural labourers who lived either on the main farm or in rented accommodation in growing or newly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highland Clearances
The Highland Clearances ( , the "eviction of the Gaels") were the evictions of a significant number of tenants in the Scottish Highlands and Islands, mostly in two phases from 1750 to 1860. The first phase resulted from Scottish Agricultural Revolution, agricultural improvement, driven by the need for landlords to increase their income – many had substantial debts, with actual or potential bankruptcy being a large part of the story of the clearances. This involved the enclosure of the Open-field system, open fields managed on the run rig system and shared grazing. These were usually replaced with large-scale Pastoral farming, pastoral farms on which much higher rents were paid. The displaced tenants were expected to be employed in industries such as fishing, quarrying, or Kelp#Uses, kelp harvesting and processing. Their reduction in status from farmer to Croft (land), crofter was one of the causes of resentment. The second phase involved overcrowded crofting communities from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, with half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. Estimates vary widely as to the extent of deforestation in the tropics. In 2019, nearly a third of the overall tree cover loss, or 3.8 million hectares, occurred within humid tropical primary forests. These are areas of mature rainforest that are especially important for biodiversity and carbon storage. The direct cause of most deforestation is agriculture by far. More than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearance Rate
In criminal justice, clearance rate is calculated by dividing the number of crimes that are "cleared", a criminal charge being laid, or convicted by the total number of crimes recorded. Various groups use clearance rates as a measure of crimes solved by the police. Clearance rates can be problematic for measuring the performance of police services and for comparing various police services. This is because a police force may employ a different way of measuring clearance rates. For example, each police force may have a different method of recording when a "crime" has occurred and different criteria for determining when a crime has been "cleared." A given police force may appear to have a much better clearance rate because of its calculation methodology. In system conflict theory, it is argued that clearance rates cause the police to focus on ''appearing ''to solve crimes (generating high clearance rate scores) rather than actually solving crimes. Further focus on clearance rates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Security Clearance
A security clearance is a status granted to individuals allowing them access to classified information (state or organizational secrets) or to restricted areas, after completion of a thorough background check. The term "security clearance" is also sometimes used in private organizations that have a formal process to vet employees for access to sensitive information. A clearance by itself is normally not sufficient to gain access; the organization must also determine that the cleared individual needs to know specific information. No individual is supposed to be granted automatic access to classified information solely because of rank, position, or a security clearance.(Abiodun, 2006) Canada United Kingdom National Security Clearance types National Security Clearances are a hierarchy of levels, depending on the classification of materials that can be accessed—Baseline Personnel Security Standard (BPSS), Counter-Terrorist Check (CTC), Enhanced Baseline Standard (EBS), Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Traffic Control
Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC is to prevent collisions, organise and expedite the flow of traffic in the air, and provide information and other support for pilots. Personnel of air traffic control monitor aircraft location in their assigned airspace by radar and communicate with the pilots by radio. To prevent collisions, ATC enforces Separation (air traffic control), traffic separation rules, which ensure each aircraft maintains a minimum amount of 'empty space' around it at all times. It is also common for ATC to provide services to all General aviation, private, Military aviation, military, and commercial aircraft operating within its airspace; not just civilian aircraft. Depending on the type of flight and the class of airspace, AT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Authorization
Authorization or authorisation (see American and British English spelling differences#-ise, -ize (-isation, -ization), spelling differences), in information security, computer security and identity management, IAM (Identity and Access Management), is the function of specifying rights/privileges for accessing resources, in most cases through an access policy, and then deciding whether a particular ''subject'' has privilege to access a particular ''resource''. Examples of ''subjects'' include human users, computer software and other Computer hardware, hardware on the computer. Examples of ''resources'' include individual files or an item's data, computer programs, computer Computer hardware, devices and functionality provided by computer applications. For example, user accounts for human resources staff are typically configured with authorization for accessing employee records. Authorization is closely related to access control, which is what enforces the authorization policy by d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball-up
A ball-up (pl. ball-ups) in Australian rules football is the method by which the field umpire restarts play at a neutral contest after a stoppage within the field of play. It involves the throwing or bouncing of the ball up between two players, known as rucks, who then attempt to win possession for their teams. A related type of contest, the boundary throw-in, occurs to restart play after the ball has gone out of bounds. It is governed by similar rules, although is not itself known as a ball-up. Ball-ups have been part of the Laws of the Game since 1872. Ball-ups are the equivalent of a jump ball, faceoff or dropped-ball A dropped-ball (or drop-ball) is a method of restarting play in a game of association football Association football, more commonly known as football or soccer, is a team sport played between two teams of 11 Football player, players who al ... from other team sports. Execution There are two means of executing a ball-up: a throw or a bounce. For a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Chess
This glossary of chess explains commonly used terms in chess, in alphabetical order. Some of these terms have their own pages, like '' fork'' and '' pin''. For a list of unorthodox chess pieces, see Fairy chess piece; for a list of terms specific to chess problems, see Glossary of chess problems; for a list of named opening lines, see List of chess openings; for a list of chess-related games, see List of chess variants; for a list of terms general to board games, see Glossary of board games. A B C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearance (cue Sports)
The following is a glossary of traditional English-language terms used in the three overarching cue sports disciplines: ''carom billiards'' referring to the various games played on a billiard table without ; ''Pool (cue sports), pool'', which denotes a host of games played on a table with six pockets; and ''snooker'', played on a large pocket table, and which has a sport culture unto itself distinct from pool. There are also games such as English billiards that include aspects of multiple disciplines. Definitions and language The term ' is sometimes used to refer to all of the cue sports, to a specific class of them, or to specific ones such as English billiards; this article uses the term in its most generic sense unless otherwise noted. The labels "British English, British" and "United Kingdom, UK" as applied to entries in this glossary refer to terms originating in the UK and also used in countries that were fairly recently part of the British Empire and/or are part of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
