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Clearance Gauge
Clearance can refer to: Engineering * Engineering tolerance, a physical distance or space between two components * Ride height (vehicle clearance) * Hydraulic clearance * Clearance in civil engineering ** Ground clearance, the amount of space between the base of an automobile tire and the underside of the chassis ** 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 Finance and trade Intellectual property * Collective rights management, the licensing of copyright and related rights * Sample clearance, legal permission to re-use a recording in another work Other uses in finance and trade * Cheque clearing, the process of transferring value on a cheque from one bank account to another ** The activity of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Tolerance
Engineering tolerance is the permissible limit or limits of variation in: # a physical dimension; # a measured value or physical property of a material, manufactured object, system, or service; # other measured values (such as temperature, humidity, etc.); # in engineering and safety, a physical distance or space (tolerance), as in a truck (lorry), train or boat under a bridge as well as a train in a tunnel (see structure gauge and loading gauge); # in mechanical engineering, the space between a bolt and a nut or a hole, etc. Dimensions, properties, or conditions may have some variation without significantly affecting functioning of systems, machines, structures, etc. A variation beyond the tolerance (for example, a temperature that is too hot or too cold) is said to be noncompliant, rejected, or exceeding the tolerance. Considerations when setting tolerances A primary concern is to determine how wide the tolerances may be without affecting other factors or the outcome of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Closeout (sale)
A closeout or clearance sale (closing down sale in the United Kingdom) is a discount sale of inventory either by retail or wholesale. It may be that a product is not selling well, or that the retailer is closing because of relocation, a fire (a fire sale), over-ordering, or especially because of bankruptcy. In the latter case, it is usually known as a going-out-of-business sale or liquidation sale, and is part of the process of liquidation. A hail sale is a closeout at a car dealership after hail damage. A store that is closing will often advertise to customers their last chance to buy. However, often closures are from companies that can't sell their inventory, inventors whose ideas were not marketable, or businesses needing fast incoming cashflow to pay debts such as payroll or rent. A closeout store is a retailer specializing in buying closeout items wholesale from others and selling them at low prices. Big Lots is a well-known closeout retail chain in the United States ... [...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 from other team sports. Execution There are two means of executing a ball-up: a throw or a bounce. For a throw, the field umpire throws the ball vertically upwards. For a bounce, the umpire throws the ball firmly on the ground such that it bounces several metres up into the air approximately, although not always perfectly, vertically. In both cases, the ... [...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 found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highland Clearances
The Highland Clearances ( gd, Fuadaichean nan Gàidheal , 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 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 fields managed on the run rig system and shared grazing. These were usually replaced with large-scale pastoral farms on which much higher rents were paid. The displaced tenants were expected to be employed in industries such as fishing, quarrying or the kelp industry. Their reduction in status from farmer to crofter was one of the causes of resentment. The second phase involved overcrowded crofting communities from the first phase that had lost the means to support themselves, through fa ... [...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. A B , "lightning"] A #fast chess, fast form of chess with a very short time limit, usually three or five minutes per player for the entire game. With the advent of electronic chess clocks, the time remaining is often incremented by one or two seconds per move.Schiller 2003, p. 398 C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal 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. The most concentrated deforestation occurs in tropical rainforests. 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, a 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. The Food and Agriculture Organization of the United Nations defines deforestation as the conversion of forest to other land uses (regardless of whether it is human-induced). "Deforestation" and "forest area net change" are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a ... [...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 charge being laid) by the total number of crimes recorded. Clearance rates are used by various groups 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." One 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 may result in effor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearance (pharmacology)
In pharmacology, clearance is a pharmacokinetic measurement of the volume of plasma from which a substance is completely removed per unit time. Usually, clearance is measured in L/h or mL/min. The quantity reflects the rate of drug elimination divided by plasma concentration. Excretion, on the other hand, is a measurement of the amount of a substance removed from the body per unit time (e.g., mg/min, μg/min, etc.). While clearance and excretion of a substance are related, they are not the same thing. The concept of clearance was described by Thomas Addis, a graduate of the University of Edinburgh Medical School. Substances in the body can be cleared by various organs, including the kidneys, liver, lungs, etc. Thus, total body clearance is equal to the sum clearance of the substance by each organ (e.g., renal clearance + hepatic clearance + lung clearance = total body clearance). For many drugs, however, clearance is solely a function of renal excretion. In these cases, clearance ... [...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. Canada Background Government classified information is governed by the Treasury Board Standard on Security Screening, the ''Security of Information Act'' and '' Privacy Act''. Only those that are deemed to be loyal and reliable, and have been cleared are allowed to access sensitive information. The policy w ... [...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 worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. Air traffic controllers monitor the location of aircraft in their assigned airspace by radar and communicate with the pilots by radio. To prevent collisions, ATC enforces traffic separation rules, which ensure each aircraft maintains a minimum amount of empty space around it at all times. In many countries, ATC provides services to all private, military, and commercial aircraft operating within its airspace. Depending on the type of flight and the class of airspace, ATC may issue ''instructions'' that pilots are required to obey, or ''advisories'' (known as ''flight info ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Authorization
Authorization or authorisation (see spelling differences) is the function of specifying access rights/privileges to resources, which is related to general information security and computer security, and to access control in particular. More formally, "to authorize" is to define an access policy. For example, human resources staff are normally authorized to access employee records and this policy is often formalized as access control rules in a computer system. During operation, the system uses the access control rules to decide whether access requests from (authenticated) consumers shall be approved (granted) or disapproved (rejected). Resources include individual files or an item's data, computer programs, computer devices and functionality provided by computer applications. Examples of consumers are computer users, computer software and other hardware on the computer. Overview Access control in computer systems and networks rely on access policies. The access control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
