新型生物芯片扫描仪光学系统设计

传统生物芯片检测扫描仪光学系统的特点是分辨率高、孔径大,但工作距离较短,一般只有1mm左右,有的甚至更短。由于组织芯片、细胞芯片等需要进行实时添加药物与试剂,工作距离越大操作越方便,因此扫描仪光学系统需要具有很长的工作距离。介绍了一种用于组织芯片、细胞芯片扫描仪的新型光学系统。该光学系统的工作距离为15mm,数值孔径为0 67,物方分辨率<350nm。这种新型光学系统首先是要确定物镜的光学结构,然后再通过计算机辅助设计方法设计出成像质量优良的物镜。     

Analysis of sextupole effects on 13 function beating in the SSRF storage ring

In a storage ring, asymmetry of the 13 function with momentum deviation is the main reason for asymmetry of the dynamic aperture. This paper applies simulation method based on AT code in Matlab to investigate sensitivity of the β function beating and the tune shift to quadrupole field error with the presence of bending field error in the Shanghai Synchrotron Radiation Facility (SSRF) storage ring. Sextupole effect on the variation trend is analyzed. Dynamics of the lattice for working points close to and away from the second order structural resonance stop-band are compared. These results show that the β function beating with momentum deviation doesn't lie in the influence of the second order structural resonance stop-bands completely, but it is relevant to lattice structure.     

The Indian auto component industry – Estimation of operational efficiency and its determinants using DEA

In this paper, the performance analysis of the Indian auto component industry is carried out from the perspectives of an original equipment manufacturer and a component supplier. Various efficiency measures are estimated using Data Envelopment Analysis with publicly available financial data on a representative sample of 50 firms. The first stage analysis reveals various operational inefficiencies in the auto component industry which are subsequently decomposed into technical, input mix and scale efficiencies. The study finds evidence that a majority of the inefficient firms are operating in the diminishing returns to scale region and demonstrates potential savings through benchmark input targets. A second stage analysis aimed at exploring root causes of inefficiencies finds that substitution of labour for capital could be causing a variety of inefficiencies including the input mix inefficiency in the Indian component industry. The empirical results also suggest that, unlike the global auto supply chain, higher average inventories are required for higher operational efficiencies in the Indian context. Contrary to the popular expectations, the technology licensing does not show significant influence on efficiency, at least in the short term, whereas efficient working capital management does result in higher operational efficiencies. The study also unearths the need to reform labour laws which are significantly contributing to various inefficiencies in the Indian component industry.     

带电作业技术中的电气绝缘与电场屏蔽

随着社会经济的发展和科学技术的进步，人们对于供电的可靠性要求越来越高，带电作业技术正成为供电企业一项越来越重要的技术．文章介绍了带电作业技术的分类和发展，探讨了人工带电作业技术安全可靠的技术基础——电气绝缘与电场屏蔽，并说明了带电作业技术的发展趋势．     

医院门诊服务能力规划研究

门诊是医院提供医疗服务的重要场所,要对门诊诊疗业务流程进行重组,改善门诊服务,必须做好门诊服务能力规划,合理配置门诊服务各类医疗资源.文章以病人等待时间为切入点,通过引入排队管理和排队模型,尝试建立服务能力规划矩阵,配置门诊服务各类医疗资源.     

新型CCD显微镜光学系统设计

提出了一种新型的长江作距离短镜筒透射式的ＣＣＤ显微镜，并作了详细地分析，给出该系统的光学设计结果和数据。     

液晶光阀图像输出特性的研究

根据液晶光阀工作曲线，探讨了图像的各种输出特性，如图像实时反转、图像边界增强等。     

运输问题的改进算法探讨

探讨了运输问题表上作业法初始解的取得和最优解的判断，在一定程度上可以省略表上作业法的方案调整过程，从而简便了求解运输问题的最优解的过程。     

SF6-N2混合气激光触发延迟抖动特性研究

 研究了SF₆-N₂混合气在四倍频Nd:YAG激光脉冲作用下的触发特性。实验结果表明：充SF₆-N₂混合气的火花隙的触发延迟和抖动、最低可触发阈值随充气压力及混合气中SF₆含量上升而上升，随激光波长减小而减小，火花隙的触发延迟和抖动随焦距的减小而减小。由于SF₆-N₂混合气的介电强度、触发延迟和抖动与混合气中SF₆含量之间均存在非线性关系，作为开关工作介质，SF₆-N₂混合气的综合性能较好的SF₆含量范围是5%～45%。     

带有负顾客且具有反馈的M/M/1/N工作休假排队

研究带反馈的且具有正、负两类顾客的M/M/1/N工作休假排队模型.工作休假策略为空竭服务多重工作休假.负顾客一对一抵消队首正在接受服务的正顾客(若有),若系统中无正顾客时,到达的负顾客自动消失,负顾客不接受服务.完成服务的正顾客以概率p(0相似文献