顾客让渡价值与企业价值双赢的模式和方法

通过对顾客让渡价值的概念和内涵的阐述，对企业提升顾客让渡价值的重要意义的分析，指出了多方位提升顾客让渡价值，也可以使企业价值达到最大化．建立了顾客让渡价值与企业价值双赢的模式，最后根据价值工程学提出了建立价值双赢互动机制的方式方法．     

多层分布式技术在牵引供电管理信息系统开发中的应用

多层分布式体系是目前在企业级大中型应用中最流行的架构 ,以牵引供电管理信息系统设备管理子系统的开发为例 ,详细地阐述了多层分布式体系的结构以及在牵引供电管理信息系统开发过程中的应用     

改善40Mn2钢低倍质量的实践

介绍了40Mn2钢的特性及用途。结合石钢3#连铸机设备的实际情况,分析了导致40Mn2铸坯低倍内裂的原因。通过优化电磁搅拌参数和振动参数,基本消除了40Mn2钢材低倍内裂的缺陷问题,为连铸设备出现变化时如何保证生产提供了思路。     

移动传输技术在泳渡台湾海峡直播中的应用

详细介绍了湖南广播电视台直播两岸游泳健儿横渡台湾海峡的技术案例,分析了在台湾海峡进行高清电视移动直播的技术难点,提出了利用移动微波、“动中通”卫星传输技术解决海上移动直播的具体方案,通过实技操作,获得了满意效果.     

基于两跳匹配的OFDMA中继网络联合资源分配算法

针对OFDMA中继网络的两跳特性,提出一种基于两跳匹配的中继网络联合资源分配算法。首先根据中继网络的两跳性建立两跳速率匹配模型,然后利用对偶分解理论将中继网络资源分配的主问题分解为：中继选择、子载波分配和功率分配三个主要的子问题并进行联合优化,同时基于中继网络两跳性在子载波分配的过程中考虑两跳子载波配对,以逼近系统最优解。最后为了保证算法的公平性,考虑子载波分配因子约束以优化子载波分配。仿真结果表明：所提算法将中继选择、两跳子载波配对与功率分配联合优化以进一步提升系统吞吐量,同时引入子载波分配因子约束,保证了算法的公平性。     

Two-dimensional spin coating with a vertical centrifugal force and the effect of artificial gravity on surface leveling

This study focuses on an innovative method for spin coating called the two-dimensional (2D) spin coating method. Using a centrifugal force applied by a rotary machine perpendicular to the wafer surface body, a vertical centrifuge force (VCF) was generated. The VCF allowed controllable artificial gravity acceleration to be generated and caused the coating to face this elevated gravity acceleration to adjust and normalize the high and low surface tension stresses. Previous surface leveling mathematics were analyzed and modified. The modified calculations indicate that the effect of additional gravity exerted on the liquid’s surface can reduce the amplitude of surface leveling. To experimentally investigate this phenomenon, a 2D spin coater was designed and manufactured. Higher artificial gravity overcame some common coating defects, such as cloudiness, edge beading, inner layer bubbling, and unsmooth surface leveling. Photoresist (AZP4620) was used as the coating material. The surface roughness was analyzed by atomic force microscopy (AFM) and the layer properties were also imaged by scanning electron microscopy (SEM). The AFM results (average and root-mean-square roughness) indicated a decrease in surface leveling amplitude by increasing the VCF. SEM images showed condensed layers without any porosity or rupture. The experimental results agreed with the simulations and calculated values.     

Recovery of scandium from bauxite residue——red mud:a review

Red mud is a slimy caustic residue generated from alumina production. Taking into account the relatively considerable content and availability of scandium, red mud can be viewed as an important and promising scandium resource rather than a solid waste. This paper is primarily to review the investigations of scandium recovery from red mud based on the most widely used hydrometallurgical processes including acid leaching, solvent extraction and ion exchange adsorption. It is thought that recovery of scandium from red mud should be considered as a direct objective rather than a by-product in the development of overall flowsheet. In order to achieve environmentally-friendly processes with high scandium recovery and low cost, more attention is required to be paid to optimizing the selective leaching of scandium to decrease mineral acid consumption and alleviate pollution, and developing new solvent extraction systems and novel ion exchange adsorption materials with high selectivity and recognition for scandium.     

Mechanical properties and microstructure of rolled and electrodeposited thin copper foil

Commercial grade rolled and electrodeposited copper foils from Japan and China were selected, and their mechanical properties and microstructure were investigated. It was observed that there are notable differences in fracture strength, elongation at break and hydrophilicity between rolled and electrodeposited copper foils. The rolled copper foils have higher tensile strength, lower ductility and larger static contact angle than electrodeposited copper foils. The rolled copper foils contain a β-fiber texture, and the electrodeposited copper foils have random crystalline orientations. It was also observed that the rolled foils have packed grains, and electrodeposited foils have equiaxial grains. The uniform fine grain size and a few substructures of Japanese electrodeposited foils are major reasons for their higher elongation.     

固体氧化物燃料电池阴极材料第一性原理研究进展

固体氧化物燃料电池(SOFC)具有能量转换效率高和燃料适应性广等突出优势,被认为是未来最有前景的清洁能源技术之一。目前SOFC研究热点是降低工作温度到500～800℃中低温区,以降低运行成本、增加可靠性,进而加速SOFC的商业化进程。阴极作为SOFC的重要组元,合理的设计和优化中低温下对氧还原反应具有较高催化活性的阴极材料至关重要。具有钙钛矿结构或由钙钛矿结构衍生出的层状结构的电子-离子混合导电型（MIECs）氧化物是目前研究最多的SOFC阴极材料。第一性原理可以弥补实验方面信息的缺失,能够提供电子结构、几何参数、吸附能及过渡态等相关信息,可以为合理设计和开发高性能的新型SOFC阴极材料提供科学依据和理论指导。本文通过对钙钛矿阴极氧空位的形成及迁移,氧分子在阴极（包括贵金属引入）表面上的吸附、解离、扩散过程及其规律进行了综述并总结了我们前期的研究成果,最后针对当前研究存在的问题及今后钙钛矿阴极的计算模拟研究方向进行了总结与展望。