排序方式: 共有49条查询结果,搜索用时 15 毫秒
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由于不确定数据流应用的出现,给传统的精确、静态数据环境下的多维建模带来了巨大挑战。针对不确定数据流动态、无限和不确定等特征,提出了一种不确定数据流多维模型。该模型中引入了不确定对象来描述不确定事实元组,并且通过定义时间维度的层次时间窗口,很好地反映了数据流的动态性和无限性,最后还对此多维不确定数据流模型的基本代数操作和分析代数操作进行了形式化定义,为不确定数据流多维查询与分析提供了理论依据。 相似文献
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降雨与水位涨落会使渗流场产生剧烈变化,而渗流场计算是边坡稳定分析的重要依据。在分析比较各种渗流计算方法的基础上,采用饱和-非饱和渗流理论计算降雨与水位涨落作用下的边坡渗流场,分析了渗流场随时间的变化规律以及渗透系数k、水位变动速度t,对边坡渗流场的影响,得出了浸润线在水位下降过程中各时刻的具体位置,以及水力梯度的分布情况,为边坡稳定性分析提供了可靠依据。 相似文献
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大型警务活动是对警察心理应激能力水平的考验。警察在大型警务活动中常表现为:认知能力降低、情绪稳定性差、行为举止失措。通过对大型警务活动中警察心理应激源的分析,提出六种心理应激干预策略:心理拓展干预训练;时心理应激适度表露和宣泄;模拟训练法;角色扮演训练法;抗干扰训练法;自我暗示训练法。 相似文献
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妙全兴 《武警工程学院学报》2010,(6):29-31
TCP协议是TCP/IP协议族中的主要协议之一,同时也是比较复杂的一个协议。正确理解TCP协议的特点和基本原理,对全面掌握计算机网络课程基本概念,进而全面掌握因特网的使用有着重要的意义。文章对TCP协议的面向字节流特性进行了深入探讨,指出了谢希仁编著的《计算机网络》(第五版)中对该问题的论述中存在的问题,并提出了自己的改进意见与作者商榷。 相似文献
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Ethan M. Orwin 《Small Wars & Insurgencies》2013,24(2):330-351
From 1956 to 1960, the French Army developed a force of Muslim auxiliaries (supplétifs) as a major component of its strategy to combat the National Liberation Front (FLN) insurgency in Algeria. Aside from their military utility in hunting down the guerrillas in the mountains and forests, the supplétifs were instrumental in undermining FLN legitimacy in the countryside. The rapid growth and employment of the supplétif force dismantled FLN political control in the villages, undermined the enemy's unity, and critically weakened the revolutionaries' claim to represent all of Algeria's Muslims. The military and political activities of France's Muslim soldiers also projected an image of Muslim–European unity behind the French cause, and portrayed the French Army as the only legitimate political force in numerous villages. These political successes, however, were limited to the local, tactical level of revolutionary warfare, and the Army was never able to convert the supplétifs into a force of decisive, strategic political significance. They thus had little ultimate impact on the outcome of the conflict. 相似文献
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Murray Wolfson 《Defence and Peace Economics》2013,24(4):339-340
This paper discusses how crises and war may “disrupt” company activities, and how companies adapt to these disruptions. Croatia is used as a case study. The original hypothesis was that war led to breaks in physical flows: in other words, that companies experienced difficulties in importing and obtaining supplies of goods. Instead, it appears that loss of customers and severely worsened conditions of payment were the principal problems for Croatian companies. Although it does not fall within the scope of this investigation, it is interesting to note that the Croatian government has not imposed any direct rationing on the industrial sector, but rather via the banking system. 相似文献
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杨希 《武警工程学院学报》2014,(1):21-24
从党和国家当前所面临问题的严重性和紧迫性出发,从全面深化改革的重大战略意义、总体战略思路、系统战略部署三个方面,对十八届三中全会及其《决定》的内容进行了深入解读。 相似文献
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The paper adds to the debate on the relationship between military spending and economic growth by analysing the contribution of a military university centre to regional economic development. It goes beyond traditional economic impact studies by including research related effects and integrating “third stream” activities. Conceptualization and categorization are carried out to thoroughly analyse the different dimensions of knowledge and “third stream” actions. The analysis is performed from its settlement and during its first 5 years of existence which allows showing how the strategy of community engagement is developed. The conclusion suggests that, as traditional military roles extend, and military education institutions become higher education institutions, a comprehensive evaluation should be taken into account to enrich the public debate on government spending. 相似文献