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151.
提出了讨价还价能力这个新概念,在此基础上,研究预算参与、信息不对称、预算强调和讨价还价能力对预算松弛的影响.根据369份有效问卷的数据,本文采用结构方程进行统计分析发现:预算强调与预算松弛正相关;预算参与和信息不对称各自与讨价还价能力正相关;预算参与和预算松弛正相关;信息不对称与预算松弛正相关;讨价还价能力与预算松弛正相关. 相似文献
152.
弹道修正技术是为了解决射程与精度的矛盾而采用的一种有效方法。激光半主动弹道修正是采用激光半主动检测落点误差,通过对鸭舵进行弹道修正来提高打击精度的。分析了激光半主动弹道修正系统的工作原理和尾翼式微旋火箭弹鸭舵执行机构控制力,建立了尾翼式微旋火箭弹的刚体弹道,在最大周期平均控制力下持续对由弹道修正的弹道修正能力进行了仿真,得到不同启控时间的弹道修正能力。为激光目标指示器、探测器、鸭舵执行机构协调设计提供了理论依据。 相似文献
153.
癸酸-十四烷酸二元体系的相变性能 总被引:1,自引:0,他引:1
以癸酸(CA)-十四烷酸(MA)二元体系的理论预测相图为指导, 测量了该体系不同组成超声波混合后的步冷曲线, 绘制了该体系的实验相图, 判断出最低共熔温度与组成范围; 采用DSC测试最低共熔组成的相变性能, 采用IR检测最低共熔组成300次热循环前后的波形变化. 实验结果表明, CA-MA二元体系最低共熔组成范围为(76%~82%)CA+(24%~18%)MA, 最低共熔温度为294.45 K, 最大过冷度为274.75 K, 相变过程中无分层现象; DSC和IR的测试结果表明, 组成为78%CA+22%MA的相变焓为149.02 J/g, 开始相变温度为292.80 K, 热稳定性好. 相似文献
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The effect of a short duration cyclic overload on the residual life and strength of laminated glass-fiber reinforced polyester is studied. A uniaxial tensile fatigue loading with the stress ratio 0.1 is considered. The residual life of the composite decreases due to the overload, while the residual strength is almost unaffected. A reasonable agreement of experimental data with the prediction by a residual strength model and by Miner's rule is observed.Translated from Mekhanika Kompozitnykh Materialov, Vol. 35, No. 5, pp. 701–706, May–June, 1999. 相似文献
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Christopher M. Weikart Hirotsugu K. Yasuda 《Journal of polymer science. Part A, Polymer chemistry》2000,38(17):3028-3042
The degradation, modification, and stability of polymeric surfaces exposed to chemically reactive O2 and H2O‐vapor plasmas were investigated. Specifically, the effects of these plasmas on etching rate, surface morphology, wetting instability, and fluid‐holding capability were studied. Wetting instability is reflected by hydrophobic recovery and can be examined by the Wilhelmy balance method. Although hydrophobic recovery is usually attributed to surface configuration change, there are actually two types: reversible and permanent. Reversible hydrophobic recovery is caused by surface configuration change, whereas permanent hydrophobic recovery is caused by the creation of oxidized surface oligomers. This study distinguishes the two by identifying differences in the shapes of the corresponding Wilhelmy force loops and in the fluid‐holding parameter. The presence of surface oligomers was most detrimental to wetting stability and fluid‐holding capability but could be controlled via the type of reactive gas, the discharge conditions, and the polymer substrate. In general, polymers most susceptible to O2‐plasma etching had the least surface oligomers and vice versa, whereas H2O‐vapor plasma suppressed surface oligomers on polymers less susceptible to etching. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 3028–3042, 2000 相似文献
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Michael Lenox 《Computational & Mathematical Organization Theory》2002,8(2):113-131
Within the resource-based view of the firm, a dynamic story has emerged in which the knowledge accumulated over the history of a firm and embedded in organizational routines and structures influences the firm's ability to recognize the value of new resources and capabilities. This paper explores the possibility of firms to select organizational designs that increase the likelihood that they will recognize and value rent-producing resources and capabilities. A computational model is developed to study the tension between an organization's desire to explore its environment for new capabilities and the organization's need to exploit existing capabilities. Support is provided for the proposition that integration, both externally and internally, is an important source of dynamic capability. The model provides greater insight into the tradeoffs between these two forms of integration and suggests when one form may be preferred over another. In particular, evidence is provided that in uncertain environments, the ability to explore possible alternatives is critical while in more certain environments, the ability to transfer information internally is paramount. 相似文献