一种基于测试序列失败树的动态测试方法

针对传统的测试方法按照静态的顺序执行预先生成的固定测试集，而实际测试范围可能被缩小，同时测试结果受到测试序列间、测试序列内的影响等问题，提出了一种构造测试序列失败树（TSFT）并用其指导动态测试的方法．该方法考虑到了测试序列之间的相关性和已测结果对后续测试的影响，通过TSFT指导测试序列的动态执行，同时还考虑了引导序列和验证序列对测试结果的影响，在避开TSFT的前提下，可在引导序列和验证序列集合中进行搜索和替换，动态地生成新的有效测试序列．实验结果表明，所提方法避免了一些重复测试以及错误转换对正确转换的测试结果的影响，较明显地提高了实际的测试效率和测试覆盖率．     

整流桥自动测试分选机的研制

论述了微型计算机在整流桥测试分选机中的应用，并分别介绍了极性测试电路、ＶＦ测试电路、ＩＲ测试电路的测试原理。还介绍了微机控制系统的硬件和软件。该机采用自动分时测量，对各项指标综合评定输出分选结果，广泛适用于半导体行业     

基于LK8820测试机的芯片参数测试研究

作为LK8810S升级版本的LK8820测试机，硬件资源更加丰富，测试机函数进一步优化。分析了LK8820测试机的特点，并以CD4511芯片为例，通过CD4511测试电路设计和搭建、静态工作电流测试、输出高电平电压测试和输入高电平电流三种参数的测试，探究基于LK8820测试机的芯片参数测试的方法和过程。此种基于LK8820的数字芯片直流参数测试方案可操作性强，测试速度快，推动了OBE理念教学，提升了集成电路产业链效率。     

试井测试曲线异常原因分析

针对测试压力曲线异常的5种类型，通过分析地层、测试工艺、测试设备、操作失误等原因造成测试曲线异常的机理与规律，探讨了应对措施，得到了应对试井测试压力曲线异常的有效方法。试井测试压力曲线异常，意味着可能录取不到真实的地层压力资料，不能获得真实的地层参数，给资料解释和油气井的认识带来困难。     

调频广播天馈线系统测试分析

用8754A网络分析仪对调频广播天馈线系统各器件进行了分析和测试，绘出了各器件的测试曲线，讲述了测试步骤和测试技巧，对各器件的典型测试结果进行了整理和分析，为今后天馈线系统设计、制造、调试，提供了理论基础和实验数据．     

语言教学中语言测试初探

语言测试是语言教学的重要教学手段，极大地促进了语言教学。语言测试分为多项选择题、完形填空题、语音测试、词汇测试、语法测试、阅读理解测试、听力测试、口语测试写作测试、听写测试、翻译测试。     

一致性测试中的时间约束及测试用例生成算法

针对协议测试理论中的时间约束问题，从不同的一致性测试方法出发对协议测试中的时间参数做了严格的约束，同时给出了基于等待、协调和同步时间的严格约束下的测试用例生成算法．在控制流测试中，先生成引导序列，然后按照测试拓扑环境设置和事件约束对引导序列、测试序列的时间进行约束设置．在数据流测试中，等待时间只需按照需求描述和约束来设定．对边界网关协议进行测试的结果表明，所提算法能适应不同的网络拓扑环境，其生成的测试用例在测试中能够有效降低测试代价．     

图式理论与阅读测试

近年来，随着图式理论模式在国内阅读教学中的应用，阅读教学发生了重大变化，因此，阅读测试也应与之相适应。文章通过对图式理论模式特性的分析，探讨了图式理论对设计阅读测试卷的指导作用，指出测试内容必须要与教学内容相一致，探讨阅读测试所应涉及的内容，如篇章结构能力的测试、背景知识和语言知识的测试等。尽量避免因爵式缺乏而影响了测试的结果，以提高试卷的信度和效度。     

初中英语口试的紧迫性和可行性研究

从我国英语教育改革的现实需要出发，从英语测试的理论的历史发展入手，特别分析了交际法口语测试的特点、常用题型和评分方法，设计初中英语口语测试的方案，进行口语测试实践，提出了以下观点：1、初中英语口语测试宜根据《新标准》的要求，实行等级测试，自愿报名，每年2—4次；2、初中英语口语测试方式与平时英语教学的口语练习方式两者要保持相当程度的一致性；3、口试评分宜采用优秀、合格、不合格(或A，B，c)三个等级，以适应目前我国初中英语教师评分能力不够高的现状，提高评分信度。     

车辆综合性能网络化虚拟仪器测试系统

针对传统仪器在车辆综合性能测试中存在的不足，将虚拟仪器技术引入车辆性能测试领域，并利用DataSocket、Web Sever通信技术开发了车辆综合性能网络化虚拟仪器测试系统．该测试系统采用PC—DAQ方案及串口通讯等，通过多传感器采集和数据融合，配以虚拟仪器测控软件，实现时汽车底盘测功、排放、噪声、侧滑、前照灯、制动以及悬架特性等性能进行测试的网络化测试仪器系统．实践表明，虚拟仪器及其网络化技术的应用提高了数据采集测控系统的性能，增强了信息、数据共享功能，系统具有实时性、可扩展性和准确可靠等优点．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with