基于响应面和NSGA-II的AGV系统多目标优化配置

AGV（automated guided vehicle）系统对于制造系统的生产柔性和生产效率具有重要作用,由于AGV系统具有许多的变量且有动态性、随机性特点,其优化配置比较复杂。提出了一种将系统仿真、数学解析和多目标优化相结合的方法,对AGV系统进行了优化配置;运用离散事件仿真模拟AGV系统运行,利用敏感性分析分离设计变量,采用析因试验和响应面方法拟合多目标优化数学模型,基于非支配解排序多目标遗传算法求解多目标优化解。通过AGV系统实例,证明了该方法的有效性,可为制造系统和物流仓储领域中AGV系统的优化配置提供一种有效的系统性分析方法。     

微贮秸秆饲料肥育牛羊及其若干问题

文中对微贮秸秆饲料的方法、肥育牛羊的效果及其该技术在畜牧业生产应用中的诸多问题进行了分析讨论 ,并提出了一些建设性意见 ,以使该方法更科学、更有效的推广普及     

数控加工干涉检验的新算法

提出一种干涉检验的新算法--点到曲面距离法.通过计算刀盘上刀尖轨迹圆上的任一点到理论曲面的距离来检验刀具与被加工曲面是否存在干涉且计算出干涉量的值,大大提高了计算效率.     

投影曲面的法空间及其应用

主要讨论ｎ＋ｍ维空间的ｋ维超曲面在Ｒ＾ｎ上的投影，在非退化情况下给出了投影曲面的正交直补空间，并在ｋ＝２，ｎ＝３时给出了三维空间上投影曲面实际应用的例子。     

厚冲积层矿区地表移动参数的特点及数值模拟

我国的厚冲积层区分布广泛，通过大量的观测站数据分析及大量厚冲积层矿区地表移动特性研究，系统提出了厚冲积层矿区地表移动参数、规律的特点,并给出了相应的数学计算公式。在分析地表产生在非连续 变形机理的同时，提出了地表移动与变形的力学分析法。研究成果对于厚冲积矿区“三下”压煤开采具有一定的指导意义。     

滑模摊铺水泥砼路面控制平整度的措施

本文分析了施工操作，机械配套，砼材料，基等几个影响路面平整度的因素，并从施工实际角度出发提出相应的技术措施，以提高滑模摊铺水泥混凝土路面的施工质量。     

高速公路水泥搅拌桩加固技术的地表沉降观测试验研究

本文结合水泥搅拌桩在高速公路软基处理中应用,对选定路基断面进行了地表沉降试验观测分析。试验结果表明水泥搅拌桩对软基的加固效果明显,沉降观测试验仪器选定及方案具有可行性。     

Influence of Clothing Fabrics on Skin Microcirculation

This study investigated the effects of clothing fabric on human skin microcirculation.Once skin is covered with a clothing fabric,human sensations,namely,coolness,warmth,softness,and roughness,are aroused immediately,and the cutaneous microcirculation may be changed consequently.Since the complex relationships of the human skin,the environment,and the clothing,there is few publication focusing on the physiological responses of the skin to the fabrics.In this paper,a Laser Doppler Flowmetry(LDF)was used to t...     

Environmental embrittlement of intermetallics

The effect of alloying elements on the environmental embrittlement of L12 type intermetallics is sum marized. The results show that the ductilizing effect of boron doping in Ni3A1 is mainly to suppress the moisture-induced environmental embrittlement. The mechanism of this suppression effect is proved to lie in the fact that it severely reduces the hydrogen diffusivity along the grain boundaries. However, the boron doping in Co3Ti alloys does not have the same effect of suppressing the environmental embrittlement. The different behavior of boron doping in Ni3A1 and Co3Ti may be attributed to its different segregation behavior on the grain boundaries. Boron in Co3Ti does not segregate on the grain boundaries and cannot effectively reduce the hydrogen diffusivity along the grain boundaries. The moisture-induced envi ronmental embrittlement of Co3Ti alloy can be completely suppressed by the addition of Fe. As proved by Auger, this suppression effect is due to its obvious reduction of the surface kinetic reaction with water vapor.