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2003年力学科学处共有7项重点项目和1项重大项目需结题(见表1)。按照《国家自然科学基金重点项目管理办法》的有关规定,项目验收工作应在项目执行期结束后6个月内完成。但受“非典”疫情的 相似文献
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按照《国家自然科学基金重点项目管理办法》的有关规定:自然科学基金委应当自收到结题材料之日起90日内,组织同行专家对重点项目的完成情况进行审查. 为了促进重点项目之间的交流, 加强对比, 提高效率,数理科学部于2011年3月15日至16日在北京召开会议组织专家对2010年结题的重点项目进行了集中审查,会议采取分学科进行的方式. 力学科学处共有10项重点项目进行了结题审查(见表1).各项目负责人就研究计划的完成情况、取得的成果及水平, 以及人才培养, 国际合作与交流的成效等进行了汇报.评审专家进行了认真讨论, 形成了结题审查专家组评价意见. 相似文献
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按照《国家自然科学基金重点项目管理办法》的有关规定: 自然科学基金委应当自收到结题材料之日起90 日内, 组织同行专家对重点项目完成情况进行审查. 为了促进重点项目之间的交流, 加强对比, 提高效率, 数理科学部于2012 年3 月15日至16 在北京召开会议组织专家对2011 年结题的重点项目进行了集中审查, 会议采取分学科处进行的方式. 力学科学处共有10 项重点项目进行了结题审查(见表1). 各项目负责人就研究计划的完成情况、取得的成果及水平, 以及人才培养和国际合作与交流的成效等进行了汇报. 评审专家进行了认真讨论, 形成了结题审查专家组评价意见. 相似文献
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对《力学》中的物体自由度进行多方面分析,以深化教学、提高学生正
确分析物理问题的能力.使用实际教学分析的研究方法,在《力学》范围内讨论自由度与坐标、
自由与约束的关系并得以下结论:
(1) 同一物体的自由度随其所在的``空间'不同而不同, 不因坐标系的选取不同而
异, 在同类参考系中不因参考系的动静而有别;(2)自由度遵循叠加原理.
讨论了质点系的总自由度及相关计算问题,并指出研究《力学》中自由度的意义. 相似文献
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Tibor Javor 《Experimental Mechanics》1968,8(4):171-176
The present paper deals with development and design of new methods utilizing Wiedemann's effect for determination of state of strain in building structures. Wiedemann's effect and some features of torsional strain of magnetic field are the basis of new experimental method. Especially the point electromagnetic strain gages using the effect of pure torsion of electromagnetic field to enable universal examination. For strain-gage measurements, almost all physical quantities are used which can be related to the variation in length of the structures. From the electric strain measurements, the most commonly used methods are the measurements by resonance-wire strain gages or by electric-resistance strain gages. In this paper, electromagnetic strain gages are discussed using the Wiedemann effect, and the author describes some new measuring equipment and his own suggestions and methods based on an application of this effect. 相似文献
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It is well known that the problem on nonseparating potential flow of an incompressible fluid about an array of profiles reduces to an integral equation for a certain real function, determined on the contours of the profiles of the array. As such a function one can take, as was done, for instance, in [1–5], the relative velocity of the fluid on the profiles of the array. For arrays of profiles of arbitrary shape it is necessary to solve the corresponding integral equation numerically. In the particular examples of the calculation of aerodynamic arrays that are available [1–3] the numerical methods used were based on the approximate evaluation of contour integrals by rectangle formulas. As investigations showed, sizeable errors arose thereby in the approximate solution obtained, these being especially significant in the case of curved profiles of relatively small bulk. In the present paper a method for the numerical solution of the integral equation obtained in [5] is proposed. The method is based on the replacement of a profile of the array with an inscribed N polygon, the length of whose sides is of the order N–1 and whose internal angles are close to . Convergence with increasing N of the numerical solution to an exact solution of the integral equations at the reference points is demonstrated. Examples of the calculation are given.Novosibirsk. Translated from Izvestiya Akademii Nauk SSSR. Mekhanika Zhidkosti i Gaza, No. 2, pp. 105–112, March–April, 1972. 相似文献
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