966 resultados para Explosives, Military


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Thesis (Master's)--University of Washington, 2016-06

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Thesis (Ph.D.)--University of Washington, 2016-06

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Commercial explosives behave non-ideally in rock blasting. A direct and convenient measure of non-ideality is the detonation velocity. In this study, an alternative model fitted to experimental unconfined detonation velocity data is proposed and the effect of confinement on the detonation velocity is modelled. Unconfined data of several explosives showing various levels of nonideality were successfully modelled. The effect of confinement on detonation velocity was modelled empirically based on field detonation velocity measurements. Confined detonation velocity is a function of the ideal detonation velocity, unconfined detonation velocity at a given blasthole diameter and rock stiffness. For a given explosive and charge diameter, as confinement increases detonation velocity increases. The confinement model is implemented in a simple engineering based non-ideal detonation model. A number of simulations are carried out and analysed to predict the explosive performance parameters for the adopted blasting conditions.

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This article argues that since 2000 successive Croatian governments have shown themselves increasingly dedicated to reforming civil-military relations. However, their efforts have been hampered by four key obstacles. First, the need to implement defence reforms in the context of an unwieldy set of civil-military relationships, political and institutional rivalries, a lack of civil and military defence expertise and a continuing legacy of politicisation. Second, the need to cut defence spending as a proportion of the overall budget whilst taking on new military roles and improving the capability of the armed forces. Third, the need to balance the demands of the NATO accession process while implementing a balanced and fundamental reform of the armed forces as a whole. Finally, the need to implement root and branch personnel reforms and downsizing in the OSRH while simultaneously recruiting and retaining quality personnel and addressing the wider social issue of unemployment.

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This paper undertakes an empirical analysis of the economic effects of military spending on the South African economy. It estimates a neo-classical model common in the literature at the level of the macroeconomy and at the level of the manufacturing sector. An attempt is made to improve upon the model by allowing the data to determine the dynamic structure of the model through an ARDL procedure. No significant impact of military spending is found in aggregate, but there is a significant negative impact for the manufacturing sector. This suggests that the cuts in domestic military procurement that have occurred since 1989 could lead to improved economic performance in South Africa through their impact on the manufacturing sector.

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A bipoláris világrendszer megszűnése a XX. század utolsó évtizedében új helyzetet teremtett a globális politikai és gazdasági viszonyokban, ugyanakkor nem mellékesen a hadiiparban is. A szerző, szem előtt tartva a hatalmi viszonyok jövőbeli elkerülhetetlen átrendeződését, elsősorban a katonai szektor előtt álló, a XXI. századra előrevetíthető kihívásokat, lehetőségeket, a szektor jövőbeli pályáját tekinti át. A hadiiparral kapcsolatban indokolt a hidegháború utáni világ fegyverkezési helyzetének, fegyveres erőinek számbavétele csakúgy, mint a releváns elméleti keretek ismertetése, továbbá a fontos globális szereplők biztonságpolitikájának vizsgálata. A katonai szektor jelenének és jövőjének alapos elemzése nem nélkülözheti a katonai kiadások jelenlegi – a világgazdasági válság által befolyásolt – és a következő évtizedekben várható alakulásának vizsgálatát. Végül, de nem utolsó sorban a szerző áttekinti a XXI. századi haditechnikai forradalom már most látható és a jövőben valószínűsíthető vívmányait, a fontosabb haditechnikai tendenciákat, illetve elemzi a nemzetközi fegyverpiac helyzetét. __________________ The end of the Cold War led to a new situation in global political and economic affairs, as well as in the military sector. The author, taking into consideration the inevitable future power shifts, provides an overview of the challenges, possibilities and future paths of the military sector. Relevant issues include assessing the arms and armed forces of the post-Cold War era, as well as the analysis of theoretical frameworks and the security policies of the important global actors. Understanding the present and the future of the military sector is not possible without the thorough analysis of military expenditures and their likely future trends. The author also overviews the outcomes of the 21st century revolution in military technology and analyses the global arms market.