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针对部队装备维修保障人员的训练效果进行定量分析和等级划分,建立一种基于区间数与可拓理论的
装备维修保障人员训练效果评估体系。结合装备维修保障人员训练实际特点和要求,利用可拓理论构建物元评估
模型,从知识水平、岗位能力、装备效能情况、人员素质和工作表现等方面出发,采用区间数为属性取值,对其
主要指标数据进行量化处理,利用层次分析法确定物元各指标的权重系数,建立物元关联函数,并利用优度评价
法和各子指标等级统计情况对装备维修人员训练效果进行评估。分析二级效果表明,该体系准确客观,可为训练
效果的评估提供参考。 相似文献
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为了提高防空导弹武器系统机动效能,提出一种基于熵权-AHP法和ADC法的机动效能评估方法。运用熵权-AHP法和ADC法的相关理论对防空导弹武器系统机动效能进行综合评估,论述了基于熵权-AHP法和ADC法的具体评估过程,并结合防空导弹武器的2种国产轮式战车进行应用分析,有效解决了机动效能评估中存在的指标信息不确定、指标权重不客观等问题。实例结果表明:该方法客观精确,符合实际,为轮式战车的设计、研制和性能改进提供了科学的理论决策依据。 相似文献
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根据地空导弹武器系统的特点,针对传统模糊综合评估模型在确定指标权重时主观性较大、利用信息不充分及进行效能评估时分辨率差的问题,进行了方法上的改进;综合应用层次分析法、熵值法以及模糊综合评估的方法构建地空导弹装备战场抢修的效能评估模型,为地空导弹装备战场抢修效能的评估提供了一种有效的方法。 相似文献
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基于熵权的Fuzzy—AHP法在雷达侦察系统效能评估中的应用 总被引:1,自引:0,他引:1
针对炮兵雷达侦察系统性能参数的不确定性,运用模糊层次分析方法建立综合评价模型,结合熵权值法对侦察系统的效能指标进行权重的确定,从而对雷达侦察系统的效能进行评估。以美国的雷达侦察系统-AN/TPQ-36、AN/TPQ-37、AN/TPQ-47雷达为例给出综合评价的分析实例,通过效能的量化比较,确定评估模型的可靠性,为指挥员作出侦察决策提供依据。 相似文献
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为量化后勤装备保障能力,查找后勤装备建设薄弱环节,对后勤装备保障能力进行评估。以G1法与熵权法组合确定权重,将G1法主观确定指标重要性之比以熵权法指标差异系数之比替代,创新主客观权重组合方式;运用云模型建立评估模型,将指标云模型与指标权重综合运算得到综合评价云模型,通过云图对比确定评估结果;分析评估结果,可知通过提高卫生装备、野营装备、维修装备、仓库装备的建设水平,可显著提升整体保障水平。结果表明,基于改进组合赋权-云模型的后勤装备保障能力评估方法有效、可行。 相似文献
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Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily. 相似文献
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The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS (geographical information system) data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms. 相似文献
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Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design. 相似文献
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By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux (kernel version 2.6.11 ) is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development. 相似文献
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For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further. 相似文献
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By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly. 相似文献
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阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅(LTNR)的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明:一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。 相似文献
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The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite. 相似文献
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Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective. 相似文献
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A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same. 相似文献