职业技能鉴定考试技术指标的确定及应用

分析职业技能鉴定的意义，提出了职业技能鉴定考试方法和技能鉴定的技术指标，给出了这些指标应用的实例。     

谈指纹鉴定特征数量标准

指纹是各国警方进行人身识别时的最常用、最有力的工具，被称为“证据之首”。在利用指纹鉴定认定人身的过程中，需要多少特征才能保证指纹鉴定的准确性一直是许多人讨论的问题。本文对各国指纹鉴定特征数量标准概况发展过程作了介绍，并对我国在该领域的现状予以介绍。     

人工神经网络和图像纹理特征提取在肿瘤鉴别诊断中的应用

为了探讨人工神经网络和图像纹理特征提取在肿瘤鉴别诊断中的应用;采用了收集病例资料并对其进行处理,以及提取相关医学图像纹理特征指标的方法;根据整理的病人相关临床检查指标、CT图像有特征性的指标、利用灰度共生矩阵提取的肿瘤CT图像纹理特征指标,得出了建立应用于肿瘤鉴别诊断的人工神经网络模型的结果;进一步得出结论:人工神经网络和图像纹理特征提取可以应用于肿瘤的鉴别诊断.     

虾病病原菌快速简易生化鉴定的研究

根据细菌分类原理和Ｂｅｒｇｅｙ氏系统细菌学手册的生化鉴定特征，找出最能区别其主要特征的项目，制成孤菌属和气单胞菌属常见种的快速简易生化鉴定检索表，用标准菌种验证，并应用于１４８株对虾病原菌的鉴定，获得满意结果。     

马蹄金的形态组织鉴定

为开发和利用新药资源，采用性状鉴定和显微鉴定技术，对马蹄金Dichondra repens Forst植物形态、药材性状、组织粉末进行了鉴定，结果表明：马蹄金叶特有的植物形态似马蹄形、叶上下表皮气孔的差异表现为上表皮气孔少，下表皮气孔多；叶下表皮着生二叉状的表皮毛，叶上表皮无表皮毛。粉末中棕黄色木纤维、螺纹导管和孔纹导管等为其主要鉴定特征。     

科技成果鉴定量化评价方法的探讨

科技成果鉴定从定性转向量定，使其排除人为因素干扰，公正准确，易于操作是科技成果管理工作垢目标之一，本文作者通过眵年实践，详细分析并论述了成果评价指标的选取、含义、评分标准、计算方法，从而对科技成果鉴定量估评价方法做了有益的探讨。     

论毛笔字迹的鉴定

毛笔字笔画粗细随意，着墨多少不匀，变化多端。鉴定时除利用一般笔迹鉴定常用特征外，应特别注意利用布局、用笔、笔压、笔力、平稳、疏密、主笔、呼应、断笔等特征。运用观形会神、数量统计、质量鉴别、同字比较、旁类比较、归类比较等方法进行检验。     

关于框架结构可靠性鉴定的几点思考

１引言结构体系可靠度是表征结构整体安全性能的指标，因而用体系可靠度来代表结构的整体承载能力是最合适不过了。但是，由于研究水平的限制，在目前的可靠性鉴定规范中，结构件承载能力的鉴定是通过验算所选定的关键截面的抗力，然后以抗力和荷载效应的比值大小来衡量该截面的承载能力的。即便是《工业厂房可靠性鉴定标准》（ＧＢＪ１４４－９０）引人了传力树的分析方法，但其评级也是取树中各基本构件等级中的最低评定等级，往往是最弱构件。最弱截面的承载力决定了整个构件乃至整个结构的承载能力，因而这种方法得到的鉴定结果距要鉴定…     

笔迹特征价值论

笔迹特征是书写习惯的表现形式，包括书写动作特征、文字布局特征和书面语言特征，是笔迹鉴定的依据。在笔迹鉴定实践中，并不是所有的笔迹都能成为笔迹特征，而只有能够反映书写习惯的部分才能称其为笔迹特征，这就有一个选择的问题。本文从系统分析法、概率推算法、范围界定法、伪装别除法、差异解释法、样本归一法、观照感悟法等七个方面总结了确定笔迹特征价值的方法。     

基于基本笔画笔压特征的手写汉字笔迹鉴定的研究

基于汉字笔迹鉴定的有效特征主要蕴含于基本笔画运笔中的设想，提出以手写汉字基本笔画为研究对象，抽取其中笔压变化特征，形成特征空间，求得鉴定对象在特征空间中分布，并计算它与辞书中各书写者之间的广义距离，从而实现笔迹的鉴定．本研究选用10位书写者，四种基本笔画，每种基本笔画采用10个样本进行了实验．其结果证实了本方法完全克服了以往笔迹鉴定研究中结体依存性带来的不足，只需对少数基本笔画的研究就对全体汉字有效，大大缩小了辞书空间．     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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