互联网第三方支付模拟平台的设计与实现

为了降低电商企业的开发测试成本,提高工作效率,需建立互联网第三方支付模拟平台。第三方支付模拟平台依照第三方支付调用与回调流程,对各支付渠道进行集成,能够模拟真实支付情形,接收电商平台的请求并向其指定接口返回支付结果信息。如何生成返回参数与签名是建立第三方支付模拟平台的难点与关键,同时,平台需要适应不同的支付流程,适用于开发测试环境。结合第三方支付的实际情况,设计了简单易用、具有良好可扩展型的第三方支付模拟平台。     

第三方软件系统验收测试实践

软件验收测试是用户对软件产品上线运行前进行的最后一次测试活动。其测试活动一般应包括：文档审核、可执行程序测试和按客户需求进行的其他项测试。对于软件系统的最终用户而言,委托第三方测试机构对软件系统进行验收测试对于提高软件质量并降低软件系统运行时的质量风险具有极其重要的作用。文中对第三方测试机构的验收测试加以论述。     

模拟呼叫器用于提高电信网络接通率的探索

介绍了用于交换机的验收、测试、运行维护的模拟呼叫器,阐述了利用模拟呼叫器进行局内接通率、计费准确率和统计准确率测试的方法,并对测试故障进行分析定位,以保证交换机的运行质量,提高电信网络的接通率。     

利用模拟呼叫器提高电信网络接通率的探索

本文介绍了用于交换机的验收、测试或运行维护的模拟呼叫器,阐述了利用模拟呼叫器来测试局内接通率、计费准确率和统计准确率的方法,并对测试故障进行分析定位,从而保证交换机的运行质量,有利于提高电信网络的接通率.     

基于物联网的智能电池测试系统设计

为了满足电池行业对充放电设备越来越复杂的测试需求,设计了一种基于物联网的智能电池测试系统,由下位机、中位机、上位机及物联网系统组成。充放电电路设计分为三相电压型PWM整流器和双向Buck/Boost DCDC变换器。系统具有以下特点:首先,系统在普通电池测试流程中加入公式编辑功能,用户可自定义变量控制设备运行和跳转,特殊任务如:直流内阻测试、模拟充电桩、BMS数据跳转等;其次,系统具有丰富的接口,可灵活扩展第三方设备,如步入式温箱,BMS可控电源,电池压力传感器等,不仅能获取第三方信息控制设备运行和跳转,还可以随电池测试任务调节第三方设备输出,实现智能控制;最后,系统接入物联网管理平台,运行信息汇总到云平台,通过移动应用及时呈现给用户。     

运营商把控IDC市场 民营资本试图虎口夺食

在国外IT巨头的刺激下,国内IDC业务迎来了黄金时期,但资本雄厚的三大运营商在这一新市场频频布局,第三方IDC运营企业能否突破它们的禁地中国移动、中国电信和中国联通牢牢霸占的IDC（Internet Data Center,互联网数据中心）市场,在第三方运营企业的进攻下,正发生着微妙的变化。     

航空机载设备中可编程逻辑器件的第三方测评方法研究

目前航空机载设备中可编程逻辑器件的应用领域和规模逐步扩大,在设备软件测评过程中软件测试人员面临着是否需要对FPGA/CPLD进行测试、如何测试的困惑。针对该疑问,本文对传统的软件测试方法和可编程逻辑器件验证方法进行分析,并借鉴军用产品软件第三方测评进入条件评估的思路,提出了能够较好地适应高安全性设备软件第三方测评的流程和方法,提高可编程逻辑器件测评的效率。     

基于OAuth单点登录系统的安全性分析和评估

现今,不少用户使用QQ、微信、微博帐号登录第三方网站,其中大多数服务器供应商都采用了OAuth 2.0安全协议,但该协议是基于单点登录的,因此存在不少安全隐患。为了进一步提高系统安全性,文中通过测试第三方网站帐号登录、登出的HTTP流量状况,模拟了网站被攻击过程,从中提取日志并分析结果,对基于OAuth 2.0安全协议的资源提供方和第三方网站的安全性进行了评估。文中针对不同的问题提出了相应的对策。     

基于分数阶相关的模拟集成电路软故障诊断* Deng Yong(邓勇), Shi Yibing(师奕兵)and Zhang Wei(张伟)

针对模拟集成电路软故障诊断的难题,提出了基于分数阶相关的方法。首先,利用分数阶小波包将待测试电路(CUT)的Volterra级数进行分解,计算出分数阶相关函数。然后,用得到的分数阶相关函数构造出待测试电路的故障特征。通过对故障特征的比较,可以将待测试电路的各种软故障状态进行辨识并对故障实现定位。标准电路的仿真实验描述了这一方法并验证了该方法对模拟集成电路软故障诊断的有效性。     

CDMA核心网络MGW网元容灾组网的探讨

随着移动用户数的不断增长,核心交换网络单局点服务用户数的进一步上升,故障所影响的范围也随之扩大。安全、稳定的运行网络是各运营商保存量、扩增量、提质量、强竞争的一个基本条件。针对目前中国电信CDMA网络组网存在的安全隐患,提出了整改方案,并对方案实现进行原理分析。通过对某本地网进行方案验证,寻呼成功率保持平稳,达到预期效果,为CDMA核心网络安全整改提供参考依据。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.