摘要：The key to develop high specific energy rechargeable batteries is development of new electrode *** existing electrode materials still have many problems:the shuttle effect and poor conductivity of the sulfur cathode,the inevitable volume expansion of the silicon anode and the lithium dendrite of the lithium metal anode that cause short circuits,***,as active electrical materials,conductive additives and electrode bodies,can play multiple roles in electrode *** interestingly,nanofibers can be functionalized to obtain better controllable properties(i.e.,electrolyte affinity,pore size distribution and surface electronic structure),thereby further enhancing electrochemical *** this article,the latest research progress in electrode design based on nanofibers is reviewed,including processing methods,structure,morphology and electrochemical *** key problems affecting the electrochemical performance of the electrode are also discussed,such as the preparation process,atomic structure,electrical conductivity,surface area and pore distribution of nanofibers,to provide reference points for nanofibers in excellent electrode design.

摘要：In order to overcome the defects of the dedicated video conference remote control, this paper designs and implements a Qt-based cross-platform video conferencing remote control. The remote control not only implements a full range of video conferencing control functions with an easy-to-use visual interface;but also implement cross-platform feature to allow users to use remote control software on their own equipment. It is economic, convenient and stylish for users. This paper mainly describes the design and implementation of remote control system framework and cross-platform features. Finally, the result in the paper shows: This remote control is reliable and easy to use.

摘要：作为系统控制的关键环节,过程控制的设计对于保证工艺的平稳操作有重要的作用。简要介绍了分散控制系统应用的关键技术,具体探讨了分散控制系统过程控制的设计,以期为相关技术和设计人员提供参考。

摘要：Rectangular tiles can be laid on a ship's hull for protection, but the sides of the tiles must be adjusted so adjacent tiles will conform to the curvature of the hull.A method for laying tiles along a reference line was proposed, and an allowable range of displacement for the four vertices of the tile was *** of each tile on a specific reference line were then *** was found that the least deformation was required when the tiles were laid parallel to a line with the least *** calculating the mean curvature on the surface, the surface was divided into three layout areas.A set of discrete points following the least deformation of the principal curvatures was obtained.A NURBS interpolation curve was then plotted as the reference line for laying *** optimum size of the tiles was obtained, given the allowable maximum deformation *** minimized the number of bolts and the amount of stuffing.A typical aft hull section was selected and divided into three layout areas based on the distribution of *** optimum sizes of rectangular tiles were obtained for every layout area and they were then laid on the *** this way the layout of the rectangular tiles could be plotted.

摘要：通过考虑不同地域、季节、温度时段大体积混凝土内外温差、表面与环境温差,探讨了32 m单箱单室预应力混凝土箱梁的温度场分布的变化以及两类温差的变化规律,采用midas软件模拟了环境温度变化在混凝土箱梁中产生的效应,初步探明了当环境发生较大变化时两类温差的演变特性。研究结果表明,当昼夜温差大于10℃时,混凝土内外温差、表面与环境温差可发生较显著的变化。根据模拟结果,设计了基于环境条件变化特征的温度测点设置方案,揭示了不同环境下混凝土箱梁的温度场分布及演化规律。

摘要：为提高高性能纤维增强水泥基复合材料的性价比,设计了一种由聚乙烯醇(PVA)纤维、钢纤维以及碳酸钙晶须作为增强材料,水泥砂浆作为基体的混杂纤维增强应变硬化水泥基复合材料(HyFRSHCC)。通过单轴压缩试验和四点弯曲试验对这种HyFRSHCC的抗压和抗弯性能进行了研究。结果表明HyFRSHCC的抗压强度高于基体材料,且在破坏时能保持良好的整体性;在弯曲荷载作用下表现出显著的应变硬化特征及多缝开裂行为,具有较高的能量吸收能力与变形能力。扫描电子显微镜(SEM)的观察结果表明碳酸钙晶须在材料破坏过程中限制了微裂缝的发展,而PVA纤维与钢纤维实现了对宏观裂缝的控制。通过引入碳酸钙晶须和钢纤维可以适量代替价格较高的PVA纤维,降低纤维增强应变硬化水泥基复合材料的成本。

摘要：通过分析广播电视台播出控制系统的组织架构、网络结构以及电视节目安全播出的关键环节,设计基于虚拟化云平台技术的广电监管系统,给出整合平台资源、优化组织结构、智能监管反馈与处置等项目实践核心举措,实现虚拟化与智能化的有机结合,提高系统运行效率,拓展高清业务模式,具有一定的借鉴意义。

摘要：江南大学新校区体育馆网壳结构施工过程复杂,为保证施工过程中的安全性,对其进行了位移监测。主要介绍了江南大学体育馆施工过程中位移监测测点布置,并进行了位移观测数据分析。观测结果表明,网壳在施工过程中各弦杆变形比较均匀,支座产生小量弹性变形,减小对混凝土柱子水平推力,调整了网壳杆件内力,整个施工组织设计合理。

摘要：仪器的总线与控制技术的关键在于总线控制器和总线桥。对于长时间连续高速采集记录应用的PXI总线仪器,其总线控制器必须具有DMA传输功能。分析了总线DMA控制器的运行机制,在FPGA器件上采用Verilog HDL设计了PXI总线DMA控制器core.在不同的PXI平台上进行测试,动态调整DMA的配置参数,得到既能满足高速传输又能保证系统健壮性的软硬件配置参数。测试和应用表明,该参数下的PXI测量仪器能够满足大多数的测量测试应用。

摘要：大跨桥梁下部结构如承台、桥墩的共同特点是3个维度尺寸大,混凝土内部绝热温度高。混凝土中心处最高温度甚至可达70℃以上,如果没有有效地控制好混凝土内部的最高温度、内外温差和表面与环境温差,往往可产生较大的温度应力,当温度应力大于混凝土的抗拉强度时,将导致混凝土结构表面开裂,影响桥墩的整体性和耐久性。已有的研究对大尺寸混凝土结构物的温控措施进行了大量的研究,均重点关注了降低最高温度、降低两类温差的方法和可采取的措施,未考虑这些方法或措施的实际效果。基于高速公路桥梁柔性墩实体段混凝土的工程实际,采用数值模拟的方法,研究分析了整体浇注、分层浇注和布置冷却水管等不同的施工方案及温控措施对桥墩混凝土抗裂效果的影响。结果表明,整体浇注混凝土时不论是否布置冷却水管,抗裂安全系数均不符合要求,仍然会产生温度裂缝;分两层浇注混凝土,抗裂安全系数较大,是合适的温控措施。对于混凝土桥墩而言,分层浇注时已能较好满足要求,尽管再布置两层冷却水管的效果更佳,但以施工便利和经济角度考虑,最合适的温控措施是分两层浇注混凝土并不布置冷却水管。