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排序方式: 共有322条查询结果,搜索用时 765 毫秒
71.
两相模型曾被用来分析SiCp颗粒增强的Al基复合材料在制备(冷却)过程中的热残余应力,但该模型无法计入颗粒之间的相互作用影响.本文在其过去提出的三相模型,并利用等效介质的物理特性,给出了计入颗粒浓度影响的MMCp界而残余应力的解析解的基础上,引入界口涂层以消除热残余应力,并对颗粒涂层的厚度与选材,利用细观力学原理进行优化设计,从而大大削弱直至完全可以消除界面处热残余应力的影响。 相似文献
72.
本文详细介绍了QX32C_256彩色LCD智能显示终端的主要功能和串行口通信中的指令格式,以及其在键盘管理系统中的应用。 相似文献
73.
提出了一种满足中分传递性的模糊一致关系,从而符合人们决策思维的心理特性。当论域是有限的时候,模糊一致关系可以用模糊一致矩阵来表示。讨论了模糊一致关系的合成运算以及模糊一致关系的建立方法,并简要说明了模糊一致关系在系统评价中的应用。 相似文献
74.
针对官南气田主要含气层段须家河组的地层、砂体划分与对比等所存在的认识较肤浅,很大程度制约了官南气田油气勘探的总体规划和部署,也影响着勘探的成功率。以高分辨率层序地层学 相似文献
75.
The analysis of covariance procedure is considered when the observations in each cell are equicorrelated. A correction procedure is given, A computationally easier conservative test statistic is also given. The conservative test statistic allows one to more readily determine the consequences of ignoring correlations, even slight correlations, in the analysis of covariance procedure. The difference of the corrected test and the conservative test is shown to converge in probability to zero. This conservative test is easy to implement on statistical computer packages, It is shown, that for the general correlation pattern, any test involving the regression coefficients of the covariables is an exact test. An example illustrates the procedure 相似文献
76.
In Search of Perfect Foresight? Policy Bias,Management of Unknowns,and What Has Changed in Science Policy Since the Tohoku Disaster
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The failure to foresee the catastrophic earthquakes, tsunamis, and nuclear accident of 2011 has been perceived by many in Japan as a fundamental shortcoming of modern disaster risk science. Hampered by a variety of cognitive and institutional biases, the conventional disaster risk management planning based on the “known risks” led to the cascading failures of the interlinked disaster risk management (DRM) apparatus. This realization led to a major rethinking in the use of science for policy and the incorporations of lessons learned in the country's new DRM policy. This study reviews publicly available documents on expert committee discussions and scientific articles to identify what continuities and changes have been made in the use of scientific knowledge in Japanese risk management. In general, the prior influence of cognitive bias (e.g., overreliance on documented hazard risks) has been largely recognized, and increased attention is now being paid to the incorporation of less documented but known risks. This has led to upward adjustments in estimated damages from future risks and recognition of the need for further strengthening of DRM policy. At the same time, there remains significant continuity in the way scientific knowledge is perceived to provide sufficient and justifiable grounds for the development and implementation of DRM policy. The emphasis on “evidence‐based policy” in earthquake and tsunami risk reduction measures continues, despite the critical reflections of a group of scientists who advocate for a major rethinking of the country's science‐policy institution respecting the limitations of the current state science. 相似文献
77.
谢朝武 《集美大学学报(哲学社会科学版)》2010,13(4):48-53
运用界面管理理论来解释酒店服务体系中的交互行为。分析酒店服务体系中所存在的外部交互障碍和内部交互障碍,并探讨酒店服务界面的缺陷层次,提出基于界面缺陷层次的服务界面分类优化方式和优化管理途径。最终分别提出面向酒店外部服务界面和内部服务界面的优化管理策略。 相似文献
78.
通过分析TCP/IP协议中的ICMP特殊报文机制 ,提出利用Delphi编程调用Windows/WindowsNT自带的Ping程序 ,巧妙而可靠的解决了网络故障的实时监测问题 ,并应用于我校校园网 相似文献
79.
Wildfires in the wildland urban interface (WUI) are an increasing concern throughout the western United States and elsewhere. WUI communities continue to grow and thus increase the wildfire risk to human lives and property. Information such as a wildfire risk map can inform WUI residents of potential risks and may help to efficiently sort mitigation efforts. This study uses the survey-based contingent valuation (CV) method to examine annual household willingness to pay (WTP) for the provision of a wildfire risk map. Data were collected through a mail survey of the East Mountain WUI area in the State of New Mexico (USA). The integrated empirical approach includes a system of equations that involves joint estimation of WTP values, along with measures of a respondent's risk perception and risk mitigation behavior. The median estimated WTP is around U.S. $12 for the annual wildfire risk map, which covers at least the costs of producing and distributing available risk information. Further, providing a wildfire risk map can help address policy goals emphasizing information gathering and sharing among stakeholders to mitigate the effects of wildfires. 相似文献
80.
杨洁 《湖南工程学院学报(社会科学版)》2012,(2):122-126
对现有的国家级和省级体育类精品课程的web界面设计现状进行调研和分析,发现在web界面在版面布局、色彩搭配和导航设计方面基本合理,可使学习者对课程网站有大致了解,但在访问统计、互动交流工具、运行形式和站内搜索功能设置和应用方面存在不足,设计尚未达到特色鲜明、功能全面的水平,还无法满足网络化教学、学习者自主学习和进行教学反馈与交流的要求。 相似文献