A module of a TiO2 nanocrystalline dye-sensitized solar cell with effective dimensions

As dye-sensitized solar cells (DSSCs) have advanced to large-scale applications from lab-level research, the large-scale performance has attracted much attention. Modules of DSSCs with size up to 10 cm × 15 cm have been investigated to optimize the efficiency for effective application. Essentially, these modules have an extended structure with lab-scale works with the exception of the dimensions and methods for the series connection. The 10 cm × 10 cm modules have shown an efficiency of 6.3% without a scattering layer and over 6.6% with a scattering layer. While the fill factors of modules depend on the width of each TiO₂ unit cell, they are much less dependent on the lengths of the unit cells.     

平坦模的部分性质及其推广

主要利用同调的方法,对2-有限表现模作了细致的讨论.进而更加深入的刻画了G-平坦模的性质,并用G-平坦模更加具体得刻画了其他的一些代数结构,从而推广了[1,2]等文章中的结果.     

Representations of a Noncommutative Associative Algebra Related to Quantum Torus of Rank Three

In this paper, we present some modules over the rank-three quantized Weyl algebra, which are closely related to modules over some vertex algebras. The isomorphism classes among these modules are also determined.     

基于连续小波变换的神经网络人脸识别研究

研究了基于连续小波变换的神经网络进行人脸识别的方法.介绍了小波分析的理论基础，详细讨论了根据小波变换系数的范数选取小波母函数的方法，根据小波脊线确定网络神经元个数的方法以及神经网络的初始化和参数训练方法.通过对人脸图像灰度的连续小波分析，神经网络的自组织自学习能力，调整连接权值和小波神经元的尺度、位移参数，完成人脸识别的任务.实验结果验证了该神经网络的识别性能明显优于用特征脸方法对相同人脸库进行的识别.     

城轨列车辅助逆变器大功率器件开路故障诊断

随着LTE技术的不断发展,军事通信领域的通信终端产品也需要更新、升级。通信终端模块（CTM,Communication Transmission Module）是一款嵌入式的TD-LTE数据卡终端产品。AT指令模块用来实现CTM与PC机之间的数据传输与控制。提出了CTM中AT指令模块的软件设计方案,采用模块化的设计方法,统一上层应用接口,实现了应用程序与Nucleus平台的衔接,提高了应用程序的可移植性;AT指令的函数匹配处理流程采用分类查找法,简化了AT指令的查找过程,提高了查找效率。最后搭建测试环境,验证了AT指令模块的功能,以上方法在实际开发和应用中都具有良好的扩展性、通用性和可移植性。     

Electrodialysis and Its Application in the Chemical Process Industry

Abstract

Hollow fiber membrane gas separation modules are used predominantly in membrane gas separation processes. The performance of these modules is often captured by simple flow and mass transfer models. However, as processes are pushed to the limits of their commercial viability, non‐ideal performance is often observed. Potential sources of this non‐ideality due to non‐uniform flows through the module are summarized and their effect on module performance evaluated.     

Optimum design of reverse osmosis system under different feed concentration and product specification

The design of various multistage RO systems under different feed concentration and product specification is presented in this work. An optimization method using the process synthesis approach to design an RO system has been developed. First, a simplified superstructure that contains all the feasible design in present desalination process has been presented. It offers extensive flexibility towards optimizing various types of RO system and thus may be used for the selection of the optimal structural and operating schemes. A pressure vessel model that takes into account the pressure drop and concentration changes in the membrane channel has also been given to simulate multi-element performance in the pressure vessel. Then the cost equation relating the capital and operating cost to the design variables, as well as the structural variables of the designed system have been introduced in the objective function. Finally the optimum design problem can be formulated as a mixed-integer nonlinear programming (MINLP) problem, which minimizes the total annualized cost. The solution to the problem includes optimal arrangement of the RO modules, pumps, energy recovery devices, the optimal operating conditions, and the optimal selection of types and number of membrane elements. The effectiveness of this design methodology has been demonstrated by solving several seawater desalination cases. Some of the trends of the optimum RO system design have been presented.     

On the Module of Almost Periodic Output for Sampled-Data Feedback Control Systems

The present paper is concerned with the module containment of almost periodic output for sampled-data feedback control system. Some known (periodic, quasi-periodic) results would be expanded. A special case of sampled-data feedback control systems is detailed. This work was partially supported by the National Natural Science Foundation of China and RFDP.     

模的Fuzzy同态性质

文[1]给出了Fuzzy子模、模的Fuzzy同态等概念，本文进一步讨论模的同态和模的Fuzzy同态性质，获得了Fuzzy子模的同态像和Fuzzy子模的模的Fuzzy同态像的基本定理。     

A proof of the strong no loop conjecture

The strong no loop conjecture states that a simple module of finite projective dimension over an artin algebra has no non-zero self-extension. The main result of this paper establishes this well known conjecture for finite dimensional algebras over an algebraically closed field.