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81.
后向投影 (BP)算法是一种被广泛应用于冲激SAR的成像算法。当冲激SAR的发射信号是某一类冲激信号时 ,根据冲激SAR成像的特点 ,推导出BP算法的方位分辨率与成像积累角、信号中心频率的关系。仿真结果表明 ,在相当范围内 ,估计公式都是准确的 相似文献
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83.
基于模糊数学的数据融合算法研究 总被引:1,自引:0,他引:1
针对当前单目标跟踪数据融合中存在的迭代求解计算量大,难以满足实时计算要求的问题,提出了一种将模糊数学和非负特征向量理论相结合的数据融合算法.该方法克服了卡尔曼滤波法、最小二乘法需要建立统一的测量方程,进行迭代求解、计算量大的问题.与传统方法相比,该方法能充分利用测量数据,提高目标跟踪精度,计算简便,便于工程实现. 相似文献
84.
改革开放初期,邓小平在领导军队现代化建设的进程中对军队政治工作指导方针作出了三次重大调整:恢复和发扬政治工作优良传统,破除"左"的思想干扰;军队要服从整个国家建设大局;军队政治工作以加强思想政治教育和制度建设应对各种严峻考验,确保政治上永远合格.这些重要的思想丰富和发展了毛泽东关于军队政治工作的理论,促进了国家和军队现代化建设又快又好的发展,对当下的军队政治工作仍发挥着重大作用. 相似文献
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86.
常跃 《军队政工理论研究》2008,9(3):12-13
把培育当代革命军人核心价值观作为一项战略性基础工程来抓,就必须把加强党的创新理论武装作为主线;把深入持久开展四项教育作为主渠道;把军事斗争准备实践作为主课堂。 相似文献
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88.
Yang‐Ming Chang 《Defence and Peace Economics》2013,24(3):149-169
This paper presents a simple model to characterize explicitly the role that an intervening third party plays in raising the cost of rebellion in an intrastate conflict. Extending the Gershenson‐Grossman (2000) framework of conflict in a two‐stage game to the case involving outside intervention in a three‐stage game as in Chang et al. (2007b), we examine the conditions under which an outside party optimally intervenes such that (i) the strength of the rebel group is diminished or (ii) the rebellion is deterred altogether. We also find conditions in which a third party optimally intervenes but at a level insufficient to deter rebellion. Such behavior, which improves the incumbent government’s potential to succeed in conflict, is overlooked in some conflict studies evaluating the effectiveness of intervention. One policy implication of the model is that an increase in the strength of inter‐governmental trade partnerships increases the likelihood that third‐party intervention deters rebellion. 相似文献
89.
Using the Solow–Swan growth model and the time‐trend included in the aggregate production function, this study applies the multivariate cointegration approach to re‐investigate the long‐run and causal relationships between defence expenditures and GDP while controlling for capital and labour input in Taiwan during the 1955–2002 period. It examines the long‐run causal relationship using the weak exogeneity test and utilizes general impulse response functions to determine whether a shock to defence expenditures affects economic growth or vice versa. Our findings provide substantive evidence in favour of the existence of a long‐run equilibrium cointegrated relationship between defence expenditures, GDP, labour and capital stock. The results of the weak exogeneity test indicate that a bi‐directional causal relationship exists in the long‐run between defence expenditures and GDP. Thus, the main policy implication that emerges from the long‐run results is that increasing defence expenditures in Taiwan is an effective means to boost overall economic performance and, with this improved economy, it should then be able to increase its defence expenditures further. Lastly, from our dynamic vector error correction model estimations, it is found that defence expenditures are a major means of adjusting for disequilibria that occur within the system. 相似文献
90.
AbstractThis study examines the causal nexus between defence spending and education expenditure in China using the bootstrap Granger full-sample causality test and sub-sample rolling window estimation. The full-sample result indicates that there is no causality between defence spending and education expenditure. By adopting a time-varying rolling window approach to revisit the dynamic causal relationships, this article identifies a negative unidirectional causality running from education expenditure to defence spending. The finding suggests that it is the education expenditure crowds out defence spending in China rather than reverse. No causality is demonstrated from defence spending to education expenditure, indicating that an increase in military spending will not crowd out expenditure on education. The results could be partly explained by that the education expenditure in China is below the requirement of corresponding economic growth, urging for more financial budget. Whereas the findings support a negative trade-off between defence and education expenditures, they refute the theory of ‘guns for butter’. 相似文献