201 resultados para Artillery.


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Mode of access: Internet.

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This dissertation explores the role of artillery forward observation teams during the battle of Okinawa (April–June 1945). It addresses a variety of questions associated with this front line artillery support. First, it examines the role of artillery itself in the American victory over the Japanese on Okinawa. Second, it traces the history of the forward observer in the three decades before the end of World War II. Third, it defines the specific role of the forward observation teams during the battle: what they did and how they did it during this three-month duel. Fourth, it deals with the particular problems of the forward observer. These included coordination with the local infantry commander, adjusting to the periodic rotation between the front lines and the artillery battery behind the line of battle, responding to occasional problems with "friendly fire" (American artillery falling on American ground forces), dealing with personnel turnover in the teams (due to death, wounds, and illness), and finally, developing a more informal relationship between officers and enlisted men to accommodate the reality of this recently created combat assignment. Fifth, it explores the experiences of a select group of men who served on (or in proximity to) forward observation teams on Okinawa. Previous scholars and popular historians of the battle have emphasized the role of Marines, infantrymen, and flame-throwing armor. This work offers a different perspective on the battle and it uses new sources as well. A pre-existing archive of interviews with Okinawan campaign forward observer team members conducted in the 1990s forms the core of the oral history component of this research project. The verbal accounts were checked against and supplemented by a review of unit reports obtained from the U.S. National Archives and various secondary sources. The dissertation concludes that an understanding of American artillery observation is critical to a more complete comprehension of the battle of Okinawa. These mid-ranking (and largely middle class) soldiers proved capable of adjusting to the demands of combat conditions. They provide a unique and understudied perspective of the entire battle.

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Case study on online delivery and support for functional skills in Mathematics, English and ICT

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Este trabalho de investigação aplicada visa estudar as principais capacidades do sistema C-RAM e a sua aplicabilidade no Exército Português, tendo por objetivo a caracterização e avaliação da possível constituição e modo de emprego de uma unidade C-RAM no Exército Português, de acordo com o poder de fogo, a capacidade radar e a mobilidade. A metodologia de investigação adotada consiste no método analítico e inquisitivo, concretizado pela realização de entrevistas a Oficiais de Artilharia. Como principais conclusões, constatamos que os sistemas Phalanx e Oerlikon se evidenciam como os sistemas C-RAM de eleição, por disporem de alcances e cadências de tiro mais adequadas às necessidades da Artilharia Antiaérea Portuguesa no âmbito da proteção da força, ou de pontos e áreas críticas, contra este tipo de ameaças.

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Handwritten caption: 105. Deutsche Artill. am Marsch nach Izbugyab (Osterschlacht) 3. April 1915 (German artillery marching to Izbugyab. (Easter Battle) )

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本文系统基于3自由度并联机器人和3维图形仿真实现了空间6维运动的模拟,构造了一种3自由度并联机构来模拟船的3维转动,并给出了并联平台的运动学逆解,采用图形仿真虚拟作战环境,模拟船的3维移动,并分析了图形驱动原因。

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20世纪90年代以来,并联机器人被广为注意,成了机器人技术新的热点。并联机器人技术被广泛地应用在工业、航天、航海等领域,尤其是并联机床,佩一出现就引起了广泛的关注,被称为是“21世纪的机床”,“20世纪机床首次革命性改型”。为了提高船载炮射击训练效益,解决船载炮兵训练的保障问题,同时也为船载炮兵训练的保障工作探索新的路子,提出研制基于并联机器人的船载炮半物理仿真试验系统,使训练可以不受天气、场地的限制。本系统采用模拟船、操瞄炮等设备与计算机图形虚拟技术相结合的方式组成船载炮半物理仿真试验系统。系统既要虚拟船载炮的作战环境,又要实现船在海浪中的6维运动。采用3自由度并联机器人平台构建模拟船,实现船的3维转动;采用计算机仿真虚拟作战环境,并实现船的3维移动。本文介绍了整个系统的软硬件构成,硬件从三自由度并联机构的运动学到控制系统的结构,软件从形成虚拟视景的图形驱动原理到主程序界面,最后展示了系统的硬件实物和软件界面的照片。基于并联机器人的船载炮半物理仿真试验系统具有以下特点:1.采用变频调速技术,研制了三自由度并联机构模拟系统,实现了船炮平台的运动模拟,使系统具有负载能力强、成本低、性能可靠等特点。2.整个系统由计算机图形分系统、动态数据采集与处理分系统、船的运动模拟分系统等组成,实现了船载炮兵射击指挥和火炮操作的模拟训练。 3.应用了多传感器信息融合技术,实现了多信息实时处理,达到了实时仿真的要求。系统能够实时检测船姿态和火炮操作状态等信息,评价射击效果。4.采用三自由度的旋转模拟与图像三自由度的平移运动相结合的方法,实现了六自由度的炮目相对运动模拟效果。该系统可用于模拟炮兵部队实施渡海登陆作战,对岸防目标、海上目标射击和指挥训练。完成船载炮兵的火炮操瞄和射击指挥的教学、训练及考核任务。

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对某研制阶段的高膛压火炮发射穿甲弹研究发现,当静强度安全系数较大时多次发生断弹事故,这说明此时动强度已成为主要矛盾,应用模态实验技术研究了脱壳穿甲弹动态特性,获得了该脱壳穿甲弹结构模态参数,模态分析方法所获得的动态薄弱截面位置与试验弹断弹情况相吻合,为其发射故障诊断提供了实验依据。

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Wydział Historyczny

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In 1848, Karl Marx predicted that a flow of cheap commodities would be the heavy artillery which would batter down all Chinese walls and open up the country to the west (Marx, 1978, p. 477). The Scottish photographer John Thomson (1837-1921) was both chronicler of and participant in the early moments of this process. Thomson was a commercial photographer who first arrived in the Far East in 1862. He earned the moniker of 'China' in a decade-long stay during which he photographed what he considered to be the key aspects of its culture and landscape. In this body of work, Illustrations of China and its People (first published in 1874) is perhaps the most comprehensive. It explores, through two hundred photographs and accompanying texts, a series of phenomena from the macro-scale of landscape, infrastructure and industry to the smaller scales of streetscapes, domestic spaces, individual portraits, and other details of everyday life. Despite his own description of the volumes as encyclopedic, Illustrations is geographically quite limited. Thomson's explorations into the hinterland proceed up the country’s principal rivers from those coastal ports which had already been wrested into western hands during the Opium Wars (of the 1840s) and subsequently opened up to trade. This is perhaps one of the reasons why Illustrations has been described as an explicitly colonial text, a guide-book for the prospective settler whose content offered the strategic knowledge of land, culture and natural resources necessary if the territorial advantages of the coastal periphery were to extended to the interior (Jeffrey, 1981, p. 64). It can also be argued, however, that Thomson’s volume offered justification for a potential colonial presence. Faced with a civilization whose history was as sophisticated as the west, it depicts a culture that is static and moribund, its addiction to traditional values an impediment to progress. While this is perhaps most explicit in the texts of Illustrations of China, it can also be seen in the images whose uniform chemical rendering also serves to make an essentially diverse culture seem homogenous. Yet it is these images that distinguish Illustrations from previous attempts to collate China’s culture and landscape. Here, the mechanical precision of his camera captures a reality that often subverts the colonial narrative, confounding stereotypes as Thomson’s mass-produced images allow another China to emerge.

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Tese de doutoramento, História (História dos Descobrimentos e da Expansão), Universidade de Lisboa, Faculdade de Letras, 2014

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Trabalho de Projeto apresentado ao Instituto de Contabilidade e Administração do Porto para a obtenção do grau de Mestre em Auditoria, sob orientação do Dr. Rodrigo Carvalho e co-orientação do Major de Artilharia António Rabaço

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Inscribed on title page, below the author's name: Champlain 8th N.Y. H. Artillery + 10th N.Y. S. Infantry.

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Fonds consists of one indenture, the sale of part of lot 94 in Niagara Township, to Thomas Eastham, by James Leinour. Thomas Eastham was a driver in the Her Majesty’s Royal Artillery and was General Brock’s trumpeter at the Battle of Queenston Heights. Eastham owned a hotel on the corner of Queen and Highland streets in Queenston. A watercolour of the hotel forms part of the J. Ross Robertson Art collection at the Metropolitan Toronto Reference Library. Eastham also served as pound keeper in the Village of Queenston. Thomas Eastham died in 1839 and an inscribed monument marks his grave in the cemetery of St. Mark’s Church, Niagara-on-the-Lake, Ont. No additional information is known about James Leinour.

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A practical military manual for officers in the Royal Regiment of Artillery. It combines training and field service manuals with lists of equipment, weights, dimensions, and equipment accuracy and performance.