108 resultados para Battlefield
Resumo:
Mobile ad hoc networking of dismounted combat personnel is expected to play an important role in the future of network-centric operations. High-speed, short-range, soldier-to-soldier wireless communications will be required to relay information on situational awareness, tactical instructions, and covert surveillance related data during special operations reconnaissance and other missions. This article presents some of the work commissioned by the U. K. Ministry of Defence to assess the feasibility of using 60 GHz millimeter-wave smart antenna technology to provide covert communications capable of meeting these stringent networking needs. Recent advances in RF front-end technology, alongside physical layer transmission schemes that could be employed in millimeter-wave soldier-mounted radio, are discussed. The introduction of covert communications between soldiers will require the development of a bespoke directive medium access layer. A number of adjustments to the IEEE 802.11 distribution coordination function that will enable directional communications are suggested. The successful implementation of future smart antenna technologies and direction of arrival-based protocols will be highly dependent on thorough knowledge of transmission channel characteristics prior to deployment. A novel approach to simulating dynamic soldier-to-soldier signal propagation using state-of-the-art animation-based technology developed for computer game design is described, and important channel metrics such as root mean square angle and delay spread for a team of four networked infantry soldiers over a range of indoor and outdoor environments is reported.
Resumo:
Battlefield House was originally the home of Mary Gage, a widow who arrived in Canada with 2 children after her husband was killed in action in the American Revolution in 1777. The original house was a log cabin which was replaced by a storey and a half frame house. Col. Nelson was the next owner of the house, and in the middle of the 19th century he raised the roof to make it a 2 storey house and added a large west wing. Successive owners: the Glover, Williams and Fisher families made a few changes to the house. The last owner was D.A. Fletcher who tore down the newer, western half of the building in 1895. In 1899, Mrs. John Calder, a granddaughter of James Gage formed the Women’s Wentworth Historical Society and raised enough money to buy the Gage Farmhouse and the land around it on which the Battle of Stoney Creek was fought. In 1910 this group purchased another 13 acres of the original Crown Grant and made 17 ½ acres of parkland open to the public. The women of the Society renovated and furnished the house. They maintained the building for 63 years. It was due to them that a monument was erected above the house by the Dominion Government. The monument was unveiled on the 100th anniversary of the Battle, June 6, 1913. The house was turned over by the Historical Society to The Niagara Parks Commission on January 19th, 1962. Source: Battlefield House Flyer, information provided by Mrs. E.B. Thompson, past president of the Women’s Wentworth Historical Society.
Resumo:
Article 10 of the 1996 Ukrainian Constitution proclaims that “The state language of Ukraine shall be the Ukrainian language” but continues: “Free development, use, and protection of Russian and other languages of national minorities of Ukraine shall be guaranteed in Ukraine.” Consolidating the position of the state language was at the centre of the "Orange Revolution", but President Yanukovich, elected in February 2010, has committed himself to a defence of the Russian language, as a regional language of Ukraine, and the battle is on to replace the Law on Languages of the Ukrainian SSR of 1989, which is still in force. Ukraine has ratified the Council of Europe’s European Charter for Regional or Minority Languages. This article reflects on the relation between language and law, and endeavours to bring clarity to a situation which at times resembles an overheated kettle about to explode.
Resumo:
This layer is a georeferenced raster image of the historic paper map: Map of the battlefield of Antietam, prepared by Wm. H. Willcox, Top. Off. & A.A.D.C. on Brig. Genl. Doubleday's staff from actual surveys ; J.G. Shoemaker, engr. 4th ed. It was published ca. 1862 by Lith. of P.S. Duval & Son. Scale [ca. 1:13,300]. Covers area in Washington County, Maryland including the Sharpsburg region and the Antietam National Battlefield. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Maryland State Plane Coordinate System (in Meters) (Fipszone 1900). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads and streets, houses, fences, vegetation, drainage, and artillery and Union and Confederate troop positions, and more. Relief shown by hachures. Includes inset: [Map of the environs of Sharpsburg]. This layer is part of a selection of digitally scanned and georeferenced historic maps of the Civil War from the Harvard Map Collection. Many items from this selection are from a collection of maps deposited by the Military Order of the Loyal Legion of the United States Commandery of the State of Massachusetts (MOLLUS) in the Harvard Map Collection in 1938. These maps typically portray both natural and manmade features, in particular showing places of military importance. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
Resumo:
This layer is a georeferenced raster image of the historic paper map: Map of the battle field of Spottsylvania C.H. : showing the field of operations of the Army of the Potomac commanded by Maj. Gen. George G. Meade U.S.A., from May 8th to 21st, 1865 [i.e. 1864], surveyed under the orders of Bvt. Col. J.C. Duane, Major of Engineers, Chief Engineer, Army of the Potomac, by Bvt. Maj. C.W. Howell, 1st Lieut. of Engineers ; assisted by Messrs. L.C. Oswell, L. Bell, and R.B. Talfor ; J. Bien, lithographer, New York. It was published ca. 1865. Scale [1:15,840]. Covers area surrounding Spotsylvania and Spotsylvania Battlefield, Virginia. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Virginia State Plane North Coordinate System (in Meters) (Fipszone 4501). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, drainage, dwellings with names of inhabitants, vegetation, Union and Confederate troop lines and defenses, and more. Relief shown by hachures. Includes note. This layer is part of a selection of digitally scanned and georeferenced historic maps of the Civil War from the Harvard Map Collection. Many items from this selection are from a collection of maps deposited by the Military Order of the Loyal Legion of the United States Commandery of the State of Massachusetts (MOLLUS) in the Harvard Map Collection in 1938. These maps typically portray both natural and manmade features, in particular showing places of military importance. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
Resumo:
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