基于ASP.NET技术的大学生就业交互平台的设计与实现

介绍了基于ASP.NET的大学生就业交互平台的功能模型及系统实现.     

120t转炉托圈制造工艺分析

对120 t转炉托圈制造工艺,从方案的选择,制造工艺,使用效果等进行了详细分析。120 t转炉托圈的制造工艺是合理的,实现了当月投产,当月达产的目标。     

射频溅射法在CeO2/YSZ/Y2O3/NiW衬底上制备YBCO超导层

用射频溅射的方法在强立方织构的CeO2/YSZ/Y2O3/NiW衬底上制备了YBCO超导层. 温度、气压等因素对超导层的外延生长有重要影响. 在基片温度大于780 ℃, 气压在11～160 Pa之间, 都有NiWO4化合物生成;在退火吸氧过程中, 金属基底被氧化. 最终在温度780 ℃, 气压100 Pa的条件下, 制备出了纯（00l）取向的YBCO薄膜, 其平面内φ扫描半高宽小于10°, 超导转变温度为87.2 K, 传导电流为11 A.     

变电站电磁干扰对微机保护装置的影响

随着变电站自动化水平的提高,微机自动化保护装置得到广泛地应用,但微机保护装置受强电环境电磁干扰问题却越来越严重,为确保变电站的安全可靠运行,提出电磁干扰问题。本文就电力系统中电磁干扰的来源和危害,以及在二次系统改造中如何减少电磁干扰展开讨论。     

高电流密度下悬浮电解制备电解二氧化锰工艺的研究

采用150 A·m-2的高电流密度,电解周期为10 d. 在此电流密度下如采用常规电解会造成电流效率降低和电解产品中γ-MnO2含量降低,阳极如果采用纯钛板, 还会造成阳极的严重钝化.故本实验阳极采用北京有色金属研究总院生产的钛基钛锰涂层阳极, 阴极采用紫铜板,主要通过改变悬浮颗粒加入量来研究悬浮颗粒的加入对于电解工艺的影响.通过实验表明在高电流密度下,无悬浮体或悬浮体含量较低的电解体系,电解效率较低,当悬浮颗粒含量达到或超过0.075 g·L-1时, 电解效率在98%以上.X射线衍射表明 随着悬浮颗粒加入量的增大, 电解产品中γ-MnO2含量不断增加.     

应用人工智能技术开发和利用工业档案资源

目前工业档案管理面临信息、数据和知识过载、非结构化以及隐性信息、数据和知识提取三大难题。人工智能在信息、数据和知识处理方面具有很大的优势，有助于解决工业情报管理中的难题，实现工业信息情报的智能化管理，提高信息情报管理的水平，增强企业的竞争力。     

Retrieval of real-time live fuel moisture content using MODIS measurements

Live fuel moisture content (LFMC) is one of the most important fuel properties and a critical parameter for wildland fire danger rating estimation and fire behavior analysis. Direct ground measurement of live fuel moisture content has disadvantages of high cost and limited spatial distribution extent. This paper presents an algorithm to retrieve live fuel moisture content from multiple bands of MODIS measurements. We analyzed the physical relationship between surface reflectance and live fuel moisture content using simulated MODIS measurements of diverse leaf samples, derived approximate inversion models, and proposed a semi-physical approach for live fuel moisture retrieval employing multiple MODIS bands. Using simulated MODIS measurements, the correlation coefficients between the true LFMC and estimated LFMC with our inversion models are 0.7738, 0.8397, 0.9560 and 0.9576 respectively. For validation, we tested our inversion method with woody live fuel moisture measurements at fire weather stations in Georgia. The correlation coefficients between measured LFMC and estimated LFMC with our inversion models are 0.5727, 0.6522, 0.7551, and 0.7737 respectively. Both model simulation and station measurements demonstrated advantages of our approach in accuracy. Our study suggests the potential for near real-time applications of live fuel moisture.     

冰蓄冷空调系统中控制技术分析

简述了HVAC系统控制的过程,并以一典型的冰蓄冷空调系统为例,详细分析了冰蓄冷空调系统中控制技术的应用过程,指出了控制中各环节的注意事项,探讨了冰蓄冷空调系统对缓解电力供应的重要意义。     

Microstrip directional coupler with flat coupling and high isolation

Based on the open-circuited slotline to realise capacitive compensation, a microstrip directional coupler with high isolation is investigated. Meanwhile, by adding external matching networks at the input/output ports, bandwidth is enhanced and a flat coupling is obtained. Centred at 2.4 GHz, a 3 dB directional coupler is designed, fabricated and examined. Both simulated results and measured data are presented, and good agreement between them is observed     

Verification of CDM circuit simulation using an ESD evaluation circuit

In this work, the capability of circuit simulation to predict CDM robustness of integrated circuits and to determine weak circuit elements is studied. The applicability is demonstrated for an ESD evaluation circuit designed to enable the analysis and optimization of ESD protection strategies in an early design phase during the introduction of a new technology. CDM circuit simulation is compared to the measurement results of variations of this circuit in two different package types. Failure locations are verified with physical failure analysis. The failure locations and CDM failure levels were reproduced accurately with circuit simulation for all circuit and package variations.