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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

A study of Quality Function Deployment(QFD) on domestic construction of warships

Ho, Tsai-mao 19 June 2006 (has links)
The ocean covers more than 70% of the earth¡¦s surface. Taiwan is surrounded by the sea. The defense of the coastal areas and territorial waters depends on the navy, and the navy must make use of various types of warships to exercise command of the sea and safeguard marine peace. With the development of science and technology, weaponry today is more complicated. In order to meet the demand for fighting, warships have higher particularity and complexity than commercial ships. So during the construction of warships we must control the quality of shipbuilding, and guarantee that every performance of a warship can match the demands of fighting, and reach the best result of fighting applications. Based on the government policy of "domestic construction of warships", and the downsizing program of the military. This thesis will start from documented discussions, according to the characteristics of warships¡¦ construction, and adopt the Analytic Hierarchy Process (AHP) to exploit multi-estimate criteria models of the naval supervisors and the shipyard operation system. Then calculate the weights of all the characteristics and use the Quality Function Deployment (QFD) to build up the house of quality. This study will combine the theoretical and actual experiences to discuss the relation between the demands of the customer (navy) and the shipyard operation system. Several recommendations have been made in order to improve overall performance of the domestic construction of warships. We hope that domestic shipbuilding corporations can do long-term planning and investment on the construction of warships. The navy can also perform warships¡¦ construction frugally and independently. In this way, the navy and the domestic shipbuilding corporations can understand each other better and get the best benefits.
42

Tools for the formation of optimised X-80 steel blast tolerant transverse bulkheads /

Raymond, Ian K. January 2001 (has links)
Thesis (M.E. (Res.))--University of New South Wales, 2001. / Optical disc inserted in pocket on p. [3] of cover. Includes bibliographical references. Also available online.
43

Operator task analysis of a shipboard electronic warfare system /

Dyess, Robert M., January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 79-82). Also available via the Internet.
44

Real time estimation of ship motions using Kalman filtering techniques

January 1983 (has links)
Michael S. Triantafyllou, Marc Bodson, Michael Athans. / Caption title. / Bibliography: p. 19-20. / Ames Research Center Grant NGL-22-009-124
45

Design of Energy Storage Controls Using Genetic Algorithms for Stochastic Problems

Chen, Si 01 January 2015 (has links)
A successful power system in military applications (warship, aircraft, armored vehicle etc.) must operate acceptably under a wide range of conditions involving different loading configurations; it must maintain war fighting ability and recover quickly and stably after being damaged. The introduction of energy storage for the power system of an electric warship integrated engineering plant (IEP) may increase the availability and survivability of the electrical power under these conditions. Herein, the problem of energy storage control is addressed in terms of maximizing the average performance. A notional medium-voltage dc system is used as the system model in the study. A linear programming model is used to simulate the power system, and two sets of states, mission states and damage states, are formulated to simulate the stochastic scenarios with which the IEP may be confronted. A genetic algorithm is applied to the design of IEP to find optimized energy storage control parameters. By using this algorithm, the maximum average performance of power system is found.
46

Warship building on the Clyde, 1889-1939 : a financial study

Peebles, Hugh B. January 1986 (has links)
The part played by warshipbuilding in sustaining the Clyde shipbuilding industry between 1889 and 1939 has received less attention than it deserves. Only a minority of firms undertook warshipbuilding in peacetime but they included some of the leading shipyards an the Clyde. This study, based on a detailed examination of accounts and cost records, shows that naval work was of critical importance for these firms from the 1890's onwards. All of the firms which took advantage of the expansion in the demand for warships in the 1890's were in financial difficulties and profitable naval contracts were largely responsible for reviving their fortunes. From then until the outbreak of the First World War in 1914, naval work constituted a major part of their output and the most profitable part of it. By 19149 all of the warshipbuilders had expanded their capacity and provided expensive new facilities largely an the strength of the demand for warships and the three biggest yards were owned by armaments manufacturers who were primarily interested in shipyards for their warshipbuilding capability. After the war, the demand for armaments contracted and the warshipbuilders were faced with the problem of finding profitable employment for capacity designed for building warships and warship engines. This proved to be impossible and the relative dearth of naval contracts in the 1920's and early 1930's was the primary cause of the severe financial difficulties in which they found themselves when the onset of the world financial crisis in 1931 brought merchant shipbuilding to a standstill. Only Beardmore's succumbed but, had rearmament not been in the offing, it is doubtful if many of the warshipbuilding yards would have survived the ensuing crisis. As it was the survivors regained their financial stability by 1939 only because of the revival in the demand for warships.
47

An exploratory analysis of littoral combat ships' ability to protect expeditionary strike groups

Efimba, Motale E. 09 1900
Approved for public release; distribution in unlimited. / This thesis uses an agent-based simulation model named EINSTein to perform an exploratory study on the feasibility of using Littoral Combat Ships (LCSs) to augment or replace the current defenses of Expeditionary Strike Groups (ESG). Specifically, LCS's ability to help defend an ESGs in an anti-access scenario against a high-density small boat attack is simulated. Numbers of CRUDES (CRUiser, DEStroyer, Frigate) ships are removed and LCSs are added to the ESG force structure in varying amounts to identify force mixes that minimize ship losses. In addition, this thesis explores various conceptual capabilities that might be given to LCS. For example, helicopter/Unmanned Combat Aerial Vehicles (helo/UCAVs), Stealth technology, close-in high volume firepower, and 50+ knot sprint capability. Using graphical analysis, analysis of variance, and large-sample comparison tests we find that being able to control aircraft is the most influential factor for minimizing ship losses. Stealth technology is another significant factor, and the combination of the two is highly effective in reducing ship losses. Close-in high volume firepower is effective only when interacting with helo/UCAVs or stealth. 50+ knot sprint capability is potentially detrimental in this scenario. An effective total sum of CRUDES ships and LCS is between five and seven platforms. / http://hdl.handle.net/10945/855 / Lieutenant, United States Navy
48

冷戰後中共海軍推動軍事外交之研究 / The PRC Navy promotes research of the military diplomacy after the cold war

李玉章 Unknown Date (has links)
軍事外交關係國防戰略,是國防戰略的對外延伸,軍事外交也是國家總體外交的重要組成部分,代表著國家安全和利益的國際軍事交往。中共在「2004年中國的國防」白皮書中,首次將「開展軍事合作與交流」置放於戰略層次,列為國防政策重點項目之一。期間積極參與地區和國際政治活動,並於此基礎上同時推動軍事交流與合作,其作為包括;聯合軍事演習、與軍事強國建立高層互訪和磋商機制、軍官培訓規模急劇擴大、軍艦外交範圍擴大等,使共軍開放程度越來越大,並且呈全方位發展的態勢,間接促使各國逐漸正視中共軍事影響力,積極與共軍進行對話與合作。 海軍為國際性兵種,軍艦一出海即代表國家,也意味著國土的延伸。軍艦出(互)訪向來被認為是軍事外交的一個重要組成部分,也是一個國家海上實力的綜合表現。中共的軍事外交固然是舉起「和平」旗幟,但從不掩飾對國際先進軍備和先進技術的追求,也不隱藏其所擁有的軍事威懾力及參與多邊安全對話、武器管控等措施。 / The military diplomacy associates with the military defense strategy. It is also an extension of national defense strategy. The military diplomacy plays an important role in overall national foreign policy, as it represents the interests of national security and international military relationships. "Developing military cooperation and international relationship," was first placed at the strategic level in PRC’s white paper, "China's National Defense in 2004". It became one of their national defense policy priorities. Since then, PRC aggressively participated in regional and international political events. In addition, PRC actively promoted international military exchanges and cooperation which includes joint military exercises, military commanders’ summit meetings and strategies consultation, officers’ international training in large scale, and increasing scope in naval diplomacy. PRC military has the grown dramatically in International level. PRC’s overall military diplomacy development situation enhance of the PRC’s international military power indirectly. Therefore, many countries established dialogue and cooperation with PRC at present. Navy is an international arms force. Naval ships at sea represent the nation’s authority and it is an extension of territory. Warships visits not only always have been considered an important component of the military diplomacy, but also represent the strength of a country's overall performance at sea. As PRC’s military diplomacy is certainly held up "peace" banner in appearance, they openly pursue the advanced arms force and advanced technology, expend their own military deterrent force and participate in multilateral security dialogue, arms control measures.
49

Kan vi inte ha en sån där istället? : om teknisk kravställning på ett fartygsbaserat UAV-system

Nilsson, Per January 2008 (has links)
Detta arbete kretsar kring obemannade luftfartyg, UAV, avsedda att baseras ombord påörlogsfartyg. Regelverk och standarder tillsammans med befintliga fartygs-, helikopter- ochUAV-system utgör ett ramverk inom vilket ett scenario leder fram till grundläggande tekniskakrav för de delsystem som ingår i ett fartygsbaserat UAV-system. Kraven, som är framtagnamed spårbarhet i sjöoperativa förmågor, erfarenheter från den miljö ett luftburet system skaverka i ombord och systemexempel som visar vad som är möjligt att uppnå med dagenstekniknivå, presenteras som ett förslag till värderingskriterier och effektmått med tyngdpunktpå de krav som ställs på luftfartyget (UAV) i sig. / This work revolves around unmanned aerial vehicles, UAVs, meant to bebased onboard naval ships. Rules and regulations, standards and current ship,helicopter and UAV systems form a framework for system requirements for aUAV system derived from a scenario. The requirements, traceable to abilitiesdescribed in the Swedish naval doctrine, the naval environment and currentsubsystems, are finally presented as a proposal for evaluation criteria andmeasures of merit. / Avdelning: ALB - Slutet Mag 3 C-upps. Hylla: Upps. ChP T 06-08
50

Vardagslivet i hamnen : Djurhamns historia belyst med marinarkeologiskt material

Wiklund, Jonas January 2015 (has links)
Those who today hear the name Djurhamn are maybe first thinking of a summer resort place with sunbathing, swimming and recreational boating activities. Djurhamn has an interesting and fascinating history well intertwined with the history of Sweden. The interesting history was exposed by the Stockholm Sport Diving Club which, during the summers of 1964 and 1965, brought up a large number of finds from the bottom of Djurhamn. The findings could essentially be dated to be in the in the period 1500s to 1700s. Like other parts of the East Coast Djurhamn was hit in "Russian raids" in the early 1700s. The known meetings of warships during the Vasa era and the history of naval ship Riskswasas fate also reflects the interesting parts of Djurhamn history. While working on this, a number of dives were made at the bottom of the basin in Djurhamn. Two side-scan surveys have also been conducted. Overall, this has not resulted in any change of the picture of what's on Djurhamns bottom. A previously unknown wreck that lies south of the cemetery have, however, been located based on information from the public. The finds from the dives during 1964 and 1965 talk about food and drinks, cooking utensils, three-leg pots and bottles speaks their language. Even earlier dated bargain materials speak the same language. It is a place where everyday objects leave imprints on the bottom along with the testimony of a brickyard, which flourished for a short period. Which traces have been left from the naval activities? Practically none. On land there are no naval monuments. The objects which were brought up at the 1960 dives were almost entirely attributable to the applications connected to cooking. Our modern society is a complex reality. There are homes, workplaces, hospitals, places of entertainment, etc. People are born, grow up, grow old and die. What do we find in the signs of the Djurhamn? Well, a picture that much is a reflection of today's society. Also here you are born grown up grown old and finally dead. Heavy drinking has flourished. In addition to self-household and shipping, there has been brick industry and cholera quarantine. Finally, perhaps Djurhamn over time is best described as farmers, fishermen and hungry sailors’ history more than the history of the fleet in the Vasa kings’ service.

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