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Abstract: Seismic inversion problems must be solved by non-linear global optimization methods.
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文摘:地震反演问题常常需要一些非线性全局最优化的方法。 |
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Abstract: Several basic problems with the trace elements in cast irons which was studied by using thermodynamical theory was intorduced.These problems included: the solubility of trace elements in cast irons,the influences of trace elements on the crystal
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文摘:介绍了运用热力学理论研究铸铁中微量元素的几个基础问题，其中包括微量元素在铸铁中的溶解度、对铁液结晶温度的影响以及在铸铁溶液中形成碳化物的倾向。 |
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Abstract: Several method are brought forward in order to improve the computation efficiency of the FEA of sheet forming.The Influence of virtue speed on the numerical simulation is also investigated.
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文摘:主要介绍了提高板料成形有限元分析计算效率的几种方法，并通过实验研究了虚拟速度对有限元分析结果的影响。 |
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Abstract: Several methods and technologies of silver residue sluage dehydration are presented,especially activated silver residue dehydration.
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文摘:介绍了几种银泥的脱水方法和技术，披露了“活性污泥脱水”研究的进展。 |
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Abstract: Several methods of drought and rain forecasting in rainy season were studied. The forecasting method applied was satisfied.
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文摘:总结了历年预报经验，从气候学预报的角度出发，研究了几种用于汛期旱涝预测的方法，在实际运用中效果较理想。 |
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Abstract: Several new physics experiments in 1998 were performed and analyzed to showthe subtlety of quantum theory,including the “wave-particle duality” and the nonseparability of two-particle entangled s tate.Here it is shown that the measurement is bou
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文摘:在1998年完成和分析的几个新的物理实验显示了量子理论的微妙性，包括“波粒二重性”以及二粒子缠结态的不可分性.本文的分析表明：测量在破坏原来存在于客体及其环境间的量子相干性时必然要改变客体.因而“物理实在”应在两个层次上定义：“自在之物”与“为我之物”.量子力学中的波函数则正起了通过“虚拟的测量”将这两个层次的物质联系起来的作用. |
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Abstract: Several β-aromaticamino ketones,which were designed according to some hypothetical models of the cyclooxygenase and 5-lipoxygenase active sites,were synthesized by an amino exchange reaction.The structures of the eight new compounds were confirm
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文摘:根据环氧化酶、5-脂氧化酶活性中心结构模型设计了一组β-芳胺酮类化合物，并用胺交换反应合成了这些化合物.经红外光谱、核磁共振氢谱及元素分析证实了8个未见文献报道的化合物的结构.药理实验结果显示.部分受试化合物在巴豆油诱发小鼠足趾肿胀模型中表现出一定的抗炎活性. |
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Abstract: Shear force is interrelating with width and thickness of plate and obliquity of knife-edge.
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文摘:斜刃剪切时，剪切力的大小与板料的宽度、厚度及斜刃倾角有关。 |
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Abstract: Shuangzengji was sprayed upon indica rice Shanyou 63 and wheat variety 8504 at the beginning of rice heading and full-earing stag e of wheat respectively,to study the biological effects on rice and wheat.Water was used as control.The results ind
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文摘:以水稻品种汕优63、小麦品种8504为材料，在水稻抽穗始期、小麦齐穗期喷施增粒增重剂(简称双增剂)，清水做对照，研究其对稻麦的生物学效应，试验结果表明：双增剂能明显提高籽粒充实度、结实率和千粒重。 |
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Abstract: Si-based photodetectors are the most promising devices for photoelectronics which can be integrated with microelectronics.
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文摘:硅基长波长光电探测器是最有希望与微电子集成的一种用于光通信的光电器件。 |
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Abstract: Simulated annealing and multigroup parallel evolution are two helpful methods which can improve the performance of genetic algorithm.These two ideas are well combined in this paper,and a new algorithm is derived,that is the multigroup parallel g
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文摘:模拟退火和多种群并行遗传进化是两种较好的改进遗传算法性能的方法.将这两种思想有机地结合起来,提出了一种基于模拟退火机制的多种群并行遗传算法.仿真结果表明,该算法不仅能增强算法的全局收敛性,还能加快遗传进化速度,得到满意的全局最优值. |
