一种嵌入式TCP／IP的实现

针对许多小型嵌入式系统要求结构紧凑、开销小的TCP／IP协议栈的需求，提出一种可移植的非路由器TCP／IP原型的实现。该TCP／IP原型基于某种小型嵌入式系统，依据RFC1122兼容性规定，提供IP、ARP、TCP、UDP服务和Berkeley Socket编程接口。该实现代码短小，开销低，性能能够满足多数应用需求，具有较强的可移植性。     

SDH中泊松分布下误块率与误码率的关系分析

本文较详细地介绍了ＳＤＨ中的ＢＩＰ误码校验方式，推导了泊松分布下，ＢＩＰ误块率与误码率的一般关系式，给出了ＳＤＨ中几种典型的误块率与误码率的关系曲线，并做了计算机模拟验证     

Development of an experimentally validated semi-empirical fully-coupled performance model of a PEM electrolysis cell with a 3-D structured porous transport layer

A semi-empirical non-isothermal model incorporating coupled momentum, heat and mass transport phenomena for predicting the performance of a proton exchange membrane (PEM) water electrolysis cell operating without flow channels is presented. Model input parameters such as electro-kinetics properties and mean pore size of the porous transport layer (PTL) were determined by rotating disc electrode and capillary flow porometry, respectively. This is the first report of a semi-empirical fully coupled model which allows one to quantify and investigate the effect of the gas phase and bubble coverage on PEM cell performance up to very high current densities of about 5 A/cm². The mass transport effects are discussed in terms of the operating conditions, design parameters and the microstructure of the PTL. The results show that, the operating temperature and pressure, and the inlet water flowrate and thickness of the PTL are the critical parameters for mitigating mass transport limitation at high current densities. The model presented here can serve as a tool for further development and scale-up effort in the area of PEM water electrolysis, and provide insight during the design stage.     

世界光伏发电产业的发展与展望

根据欧洲光伏工业协会（EPIA）对全球以及世界主要光伏产业国家的情景预测结果,结合其他相关资料,探讨了世界光伏发电产业的现状,分析了世界光伏产业的发展趋势。目前光伏发电的成本较高,发展速度受政府的扶持政策影响很大,光伏发电作为一种清洁的可再生能源将逐步成为世界能源供应的主体,在许多国家政府的支持下世界光伏产业发展经历了飞速发展的十年,累计装机容量和新增市场达到历史新高。但是,各国的发展很不平衡,特别是受全球经济衰退的影响,一些国家的光伏发电发展速度受政策调整影响有所放慢,不过从长期来看世界光伏产业的发展非常乐观,特别是我国政府为了克服经济发展的能源瓶颈和发展内需的决策,有望在不久的将来成为世界三大光伏发电市场之一。     

光传送网中差错检测码的研究(Ⅰ)

推导了在波松误码模型和突发误码模型下 ,比特块产生差错的概率、检测出差错块的概率和检测效率的数学表达式 .在此基础上 ,模拟并分析了不同 EDC所能检测的最大误码率 (饱和误码率 )和最低检测效率 ,得出为每个串接监视域分配一个 BIP字节可以满足性能监视的需求的结论 .如果要求 EDC的检测效率至少不低于 90 % ,可以采用 2× BIP- 4差错检测方案 ;如果不需要实时地测量性能状态 ,可以采用 8× BIP- 1差错检测方案     

Acceptance Test for Fault Detection in Component-based Cloud Computing and Systems

Fault Detection is considered as one of the main challenges in large-scale dynamic environments and thus, for maintaining the reliability requirements of Cloud and Mobile Cloud systems. Most of the popular existing techniques for fault detection applied on the Cloud Computing environment in general, are based on system-monitoring despite the extreme difficulty of keeping track of all machines with their huge number in Cloud systems. In this paper, we propose a Fault Detection framework for the Component-based Cloud Computing by using Recovery Blocks’ Acceptance Test. This framework aims to construct Fail-Silent Cloud modules which have the ability of Self-Fault detection. In this, the detection process of transient hardware faults, software faults, and response-time failures is performed locally on each computing machine in the Cloud system. Background of the research issue, our mechanism, thorough analysis, and appropriate case study are presented. The efficiency and practicality of the proposed framework are proved by Safety verification using the model-checker.     

高速OTA系统的研究

文章介绍了当前OTA系统及其实际应用中存在的不足，提出了一种基于BIP及高速通道的改进模型．并列举了系统升级所需要的主要工作。文章认为使用此改进模型可以有效地改善当前OTA系统的传输速率．交互性和可靠性，从而进一步推动OTA业务的深入与发展。     

SDH系统中BIP码的误码检测性能分析

在ＳＤＨ系统中，利用ＢＩＰ码进行误码测试是行之有效的方法，但也有其不完全性，本文对ＢＩＰ码的检测方法进行了介绍，并利用概率分析方法进行了准确性分析。     

基于SCWS技术的增值业务浅析

通过研究SCWS的关键技术及其支持SCWS业务的终端所需具备的能力,探讨基于SCWS技术可开展的增值业务及业务开展模式,对SCWS业务在终端上的实现进行了研究,并对业务开展面临的问题和障碍进行了分析,可为开发、部署SIM卡上的SCWS业务提供借鉴和参考。