模拟退火混合遣传算法及其在锌电解节能中的应用研究

针对电力部门提出的分时计价原则,根据由生产过程数据所建立的不同酸度下电流密度与电流效率间关系,建立锌电解过程分时供电优化模型,并将一种改进的高效模拟退火算法应用于分时供电模型,获得最优的分时供方案。     

金刚石膜紫外光电导探测器及性能

用化学气相沉积法生长金刚石膜,在此膜上制作紫外光电探测器,并作了性能测试。该器件是叉指式电极结构,可以减小电极间隙,减少光激发载流子的损失,提高器件的响应灵敏度。表面处理可除去金刚石膜的低电阻表面层,提高器件对紫外光的探测性能。测试表明,用金刚石制作的器件对波长小于２２５ｎｍ的紫外光的响应比可见光高４个量级。     

实现对无人机多目标分时跟踪的方法研究

目的 验证计算机对雷达天控系统控制方案的可行性。方法 通过计算机对雷达天控系统的探讨,实现对无人机多目标的分时跟踪。结果 测试雷达天控系统的跟踪性能并进行相应分析。结论 为研制雷达跟踪模拟器及控制方案提供定量分析和必要的数据与资料。     

热电厂供热成本分摊新方法--热耗变换系数法"好处归热法"的新解与理论证明

对热电联产的总热耗进行分摊,提出了热电成本分摊的“热耦变换系数法”并且证明该方法是“好处归热法”的典型方法,而“实际焓降法”没有考虑回热影响,因此分摊的结果存在偏差。文中以２００ＭＷ－Ｎ－Ｃ型机组为例,对包括“热耗变换系数法”和“热量法”在内的各种方法进行了比较。     

认知无线电下行链路中的频谱共享算法

该文提出了一种适用于下行认知无线电系统的频谱共享算法,在保证对授权用户的干扰低于限制和总发射功率受限的条件下最大化系统总容量。分析了对授权用户的干扰并给出设置干扰限制的方法,在此基础上分两步实现总容量的最大化:先通过最大信道信干噪比原则实现最优的子载波分配;然后利用提出的双注水方法计算最优的功率分配。仿真结果表明,相比传统的频谱共享算法,该算法可以获得显著的系统容量增益。     

基于信息融合模型的心脏病急救信息共享系统

心脏病急救过程中产生的信息呈现出多维度、动态性和不确定性的特点.为了有效地应用这些信息,提出了一个4层的行为体系结构.在这一结构的基础上,提出了一种两阶段心脏病信息融合推理机制.基于这一推理机制,建立了心脏病急救信息共享系统.     

基于老幼复合共享的社区公共设施设计研究

目的 探索人口老龄化背景下,实现我国社区公共设施老幼复合共享的设计要点。方法 通过对老年人和儿童群体的生理、心理需求和行为活动特征进行分析,指出基于老幼复合共享的社区公共设施设计要以人为本,准确把握老年人和儿童群体在日常生活中的身心状态和行为活动的内在关联性。在设计中不仅需要妥善处理好老年人和儿童群体的健康安全、社交娱乐、情感归属需求,还应结合老年人和儿童群体的时域、地域以及类型进行关联思考,通过理论研究和案例论证,阐述如何通过社区公共设施设计促进老幼代际的交流与融合。结果 得出基于老幼复合共享下的公共设施设计要点。结论 基于老幼复合共享的社区公共设施设计需要关注老幼群体的共融、共助、共依、共娱,从协调多元需求、引导互助协作、促进交往陪伴、激发多维互动等方面进行设计探索,从而促进代际融合与全龄社区环境的实现。     

一种嵌入式P2P文件共享系统

论述Windows CE嵌入式平台上一种P2P文件共享系统的实现。并针对嵌入式平台的特点,对该文件共享系统进行了优化,提出两种优化方法：充分利用内存资源和改善排队算法。前者解决嵌入式平台I/O操作速度慢的问题,后者解决嵌入式系统Socket资源受限的问题。测试结果表明,这些优化方法有效地改善了文件共享系统的性能,提高了文件下载速率。     

An Investigation of the Presence and Development of Social Capital in an Electrical Engineering Laboratory

Social capital consists of resources embedded in social networks that are purposefully mobilized through personal interactions. This project examined the factors that affected the development of social capital in an electrical and computer engineering laboratory. Data were collected through participant observation over the course of a term, interviews with students, and a survey. Interview and observational data were analyzed to determine themes or patterns in behaviors and actions that indicated the presence of social capital and affected the development of social capital in this setting. The open‐ended nature of the laboratory assignments and the complexity of a learning tool called TekBot? required students to access information. The lack of relevant information from the teaching assistants, internet, and laboratory assignment handouts required students to mobilize information from each other to succeed. Multiple methods of data collection validate the result that specific factors encouraged the development of social capital in this laboratory.     

Direct solar water splitting cell using water, WO3, Pt, and polymer electrolyte membrane

A solar water splitting cell composed of WO₃, Polymer Electrolyte Membrane (PEM) and Pt was constructed for producing hydrogen from deionized water in sunlight. Spectral responsivity measurements under various temperatures and bias voltages were conducted for the cell using the Incident Photon to Current Efficiency (IPCE) method. For comparison, a known WO₃ Photo Electro Chemical (PEC) cell containing H₃PO₄ electrolyte, WO₃/H₃PO₄/Pt, was tested using the same test method. The WO₃/PEM–H₂O/Pt cell showed better Quantum Efficiency (QE) performance compared to that obtained from the cell with the chemical electrolyte. For the first time, spectral responsivity of photo water splitting process without bias power was unveiled in the new WO₃ cell, demonstrating the self-sustained photo electrolysis capability. Bias voltage effect on Solar to Hydrogen (STH) conversion efficiency was dramatic in the range from 0.2 V to 1.2 V and suppressions of STH were observed when high bias voltages were applied. In addition, a strong temperature effect on the energy conversion efficiency at high bias voltage was observed in the cell containing PEM–H₂O, revealing that the STH at 54 °C is nearly five times that at 14 °C.