基于SSIS设计器的数据库数据转换的实现

SSIS是一个数据集成转换的平台,它可以对数据库中的数据进行转换、提取和加载,SSIS设计器可以灵活的给SSIS包添加任务,它允许数据库管理员导入、导出数据库中的数据和从多个数据源中转换同种或异种数据,以及定义复杂数据的工作流,因此,利用SSIS设计器能够保证数据库中的较复杂数据高效、快速和合理的转换。     

管束干燥机自控系统的设计与实现

针对管柬干燥机的特点，设计基于变频一拖三的干燥机风机自动控制系统，系统采用S7—300PLC控制器，利用STEP7软件编制自动控制程序，具有机械和逻辑互锁保护功能，保证设备安全可靠地运行，实现了生产的自动化及能源的节约化，从而提高了干燥单元的工作效率。     

科技成果转化的系统分析及模式研究

科技成果转化已成为我国经济发展的主要“瓶颈”之一。首先对成果转化做了界定，然后进行成果转化的系统分析，并从理论上阐明了成果转化的模式、特点及其设计原则。这为成果转化的科学决策提供了参考     

Conditional transformation of immunoglobulin mutation pattern from gene conversion into point mutation by controlling XRCC3 expression in the DT40 B cell line

A hypermutating B cell line DT40 is useful for screening antibodies and improving affinity of the selected antibodies in vitro. To perform affinity maturation efficiently, we generated an engineered DT40 line whose immunoglobulin mutation pattern can be transformed from gene conversion into point mutation by conditional suppression of XRCC3 expression.     

变频技术在铝电解厂烟气净化系统节能改造中的应用

介绍了采用ABB ACS1000和西门子PLC相结合的变频控制方案在实现铝电解厂烟气净化系统的节能降耗目标中的应用情况,重点描述了软件功能与设计,Profibus通讯设计等关键内容.实际运行表明,该方案运行稳定、可靠,节能效果显著,具有良好的应用前景.     

Design methodology for configurable analog to digital conversion using support vector machines

We apply a support vector machine (SVM) classifier to the design of analog to digital converters. Each output bit of the converter is the output of a binary classifier, which is a nonlinear SVM. The classifier effectively learns a folding characteristic for each bit, which is realized as the weighted sum of a set of kernel functions. In our proposal, the kernel does not need to be symmetric or positive definite, unlike in the case of a conventional SVM. This makes the approach more amenable to VLSI design, where such constraints are hard to satisfy. The SVM uses a set of binary weights, which allows the folding characteristics to be digitally corrected after fabrication. This facility is of considerable value in analog design in a deep sub micron era, where simulation models do not adequately capture the behavior of devices, or their variations. The proposed methodology reduces design time, can be automated and calibrated for process variations and ageing, by changing a set of digital scaling coefficients.     

电机型式试验站技术方案比较

介绍了传统电机型式试验站及采用GC400电子内回馈变频电源试验室方案的优缺点。通过项目试验表明GC400电子内回馈变频电源试验室方案性能更好。     

环氧乙烷水合反应器的简易设计方法

介绍一种在特定条件下的简便的环氧乙烷水合反应器设计方法。     

Estimated output parameters at high neutron flux values for an experimental fission electric cell

The output parameters of an experimental fission electric cell (FEC) operating in the current generator mode have been estimated for the values of the neutron flux existing in the nuclear reactors. The estimation has been performed on the basis of the experimental values obtained in an investigation carried out at the Central Institute of Physcis (CIP) in Bucharest, Romania, concentrating on direct nuclear fission energy conversion into electrical energy. These experimental values are higher by orders of magnitude than those reported by other laboratories. The results of the estimation indicate that hundreds of microamperes, hundreds of kilovolts and hundreds of watts could be delivered by an FEC containing 1g of ²³⁵U and irradiated in a thermal neutron flux of 1.4 × 10¹³ neutron cm^?2s^?1. The research demonstrates the feasibility of efficient fission electric cells as potentially usable components in nuclear reactors.     

KDP晶体高效二倍频实验

本文报导了关于ＫＤＰ晶体Ⅱ类相位匹配的实验研究。用Ⅱ类匹配的ＫＤＰ晶体对功率密度４ＧＷ／ｃｍ２的钕玻璃激光，以偏振方向与晶体Ｏ轴夹角４５°，３５．３°的情况进行实验，分别获得７９．５４％，６４．０６％的倍频转换效率。并对倍频绿光用Ｔｅｘｔｒｏｎｉｃｓｓｃｄ１０００，ＴｒａｎｓｉｅｎｔＤｉｇｉｔｉｚｅｒ示波器进行波型测量，用２０４８一维ＣＣＤ进行光谱分析，光谱线宽为０．００２３ｎｍ。实验还发现了倍频晶体ＬｉＮｂＯ３在达到破坏时出现的烟状斑痕