AIM25 is a non-profit making collaborative archive project; a single point of networked access to collection level descriptions of the archives of over one hundred higher education institutions, learned societies and specialist archives within the M25 Greater London area of the United Kingdom. It holds over 7500 collection level descriptions on subjects including social sciences, politics, social and economic history, women's history and military history. Each description on AIM25 provides a link to ARCHON which gives contact details of the repository holding that archive.

AIM25 follows ISAD(G) and is interoperable with Encoded Archival Description, Open Archives Initiative and Dublin Core. AIM25 is based at King's College London and is freely available to all. Partner institutions update the records for their holdings and collection level descriptions are indexed at King's College London using personal, corporate, place names and subject thesauri. AIM25 is freely available and forms part of the UK national network of archives.

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ASRAAM

The Advanced Short Range Air-to-Air Missile, also known by its United States identifier AIM-132, is an imaging infrared homing ("heat seeking") air-to-air missile, produced by MBDA. It is currently in service in the Royal Air Force (RAF) and Royal Australian Air Force (RAAF), replacing the AIM-9 Sidewinder. ASRAAM is designed to outrange and outrun any other IR missile in service, allowing the pilot to fire and then turn away long before the opposing aircraft can close for a shot. It flies at well over Mach 3 to ranges as great as 50 kilometres (31 mi), well over double the range of earlier designs. It retains a 50g manoeuvrability provided by body lift technology coupled with tail control.

The project started as a British-German collaboration in the 1980s. It was part of a wider agreement in which the US would develop the AIM-120 AMRAAM for long-range use, while the ASRAAM would replace the Sidewinder with a design that would cover the great range disparity between Sidewinder and AMRAAM. Germany left the program after examining the latest Soviet designs of the 1980s, deciding that a missile with far greater short-range maneuverability was more important than range. The British proceeded on their own, and the missile was introduced into RAF service in 1998. It has since been selected to replace Sidewinder in the Royal Australian Air Force and is being introduced to the Indian Air Force.

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City

A city is a large and permanent human settlement. Although there is no agreement on how a city is distinguished from a town in general English language meanings, many cities have a particular administrative, legal, or historical status based on local law.

Cities generally have complex systems for sanitation, utilities, land usage, housing, and transportation. The concentration of development greatly facilitates interaction between people and businesses, benefiting both parties in the process, but it also presents challenges to managing urban growth.

A big city or metropolis usually has associated suburbs and exurbs. Such cities are usually associated with metropolitan areas and urban areas, creating numerous business commuters traveling to urban centers for employment. Once a city expands far enough to reach another city, this region can be deemed a conurbation or megalopolis. In terms of population, the largest city proper is Shanghai, while the fastest-growing is Dubai.

Origins

There is not enough evidence to assert what conditions gave rise to the first cities. Some theorists have speculated on what they consider suitable pre-conditions and basic mechanisms that might have been important driving forces.

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Administrative divisions of Texas

Texas has a total of 254 counties, many cities, and numerous special districts, the most common of which is the independent school district.

County

Texas has a total of 254 counties, by far the largest number of counties of any state.

Each county is run by a five-member Commissioners' Court consisting of four commissioners elected from single-member districts (called commissioner precincts) and a county judge elected at-large. The county judge does not have authority to veto a decision of the commissioners court; the judge votes along with the commissioners (being the tie-breaker in close calls). In smaller counties, the county judge actually does perform judicial duties, but in larger counties the judge's role is limited to serving on the commissioners court and certifying elections. Certain officials, such as the sheriff and tax collector, are elected separately by the voters, but the commissioners court determines their office budgets, and sets overall county policy. All county elections are partisan, and commissioner precincts are redistricted after each ten year Census both to equalize the voting power in each and in consideration of the political party preferences of the voters in each.

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