JIT运输问题及其与其它运输问题的关系

建立了基于JIT管理的运输问题的数学模型,介绍了各种运输问题之间的关系,即JIT运输问题是改进的基于JIT管理的运输问题,D运输问题是特殊的JIT运输问题,B运输问题是特殊的D运输问题,而传统运输问题和时间最小运输问题又都是B运输问题的特殊情况.     

建立物理"提出问题"教学模式,培养学生提出问题能力

本文致力于研究如何在物理教学中采取“发现问题、提出问题”教学模式进行教学，培养学生的问题意识和发现问题、提出问题能力。研究结果表明：采用本研究提出的物理“发现问题、提出问题”的教学模式培养学生的问题意识和发现问题、提出问题能力，其效果比常规教学方法更好，更有利于学生问题意识的培养及发现问题和提出问题能力的提高，特别是对学习程度中、上的学生培养效果更为显著。     

限制解除对顿悟问题解决的促进

采用源问题——靶问题的顿悟研究范式,探讨了大学生在解决4点问题和9点问题中限制解除作为关键启发信息的作用．结果发现,先解决4点问题再解决9点问题的解决率显著高于直接解决9点问题;先解决4点问题对9点问题的启发显著高于先解决9点问题对4点问题的启发．研究表明限制解除作为关键启发信息能促进顿悟问题解决．     

大抓第一生产力,加速发展山西经济——在全省科学技术工作会议上的讲话

强调要加速发展山西经济,必须解决好七个问题：科技与经济的关系问题、科技与人才的关系问题、科技与管理的关系问题、普及与提高的关系问题、科技与应用的关系问题、应用与创新的关系问题以及党政一把手都来抓科技投入的问题     

网络最大流问题的应用

最大流和它的对偶问题最小截问题是经典的组合优化问题,已有40多年的研究历史,存在许多优秀的算法和大量优秀的代码。许多问题转化为最大流问题或最小截问题后可以得到十分有效的解决。该文列举了网络最大流问题在匹配问题,图的边连通度问题及资源分配问题领域的应用。     

网络图任意两点间最短路径问题的计算机实现

最短路径问题是网络分析中的一个最基本的问题,著名的旅行推销员问题,中国邮路问题,运输网络的最小费用最大流问题及最小根树问题等都建立在此问题的基础上。本文用集合并的思想解决了Floyd算法中路径寻求在计算机上实现的问题,并给出了负回路的判别方法,从而也解决了中国邮路、旅行推销员等相关问题的计算机实现问题。     

幼儿语言教学有效提问的探讨

课堂提问可以根据分类方式的语句,也可以按照自己的分类问题的清晰程度,还可以根据不同顺序的分类问题.根据心理学的理论,我们可以把问题分为三种类型,一般分为内存问题,思考问题,讨论三类问题:内存问题.孩子们已经召回信息的需要,它是一种教师最常问.问题的思考.孩子们需要使用现有的信息来创建新的信息.通过处理问题的现有知识来回答孩子的问题的探索.通过对现有的知识探索问题答案的处理问题得到了手指的问题探讨.老师提出的探究,追求问题的事情,原因.     

大学生主要心理健康问题及对策探讨

近年,大学生心理健康问题受到越来越多的关注,笔者从学业问题、人际关系问题、情绪问题、就业问题四个方面详细分析了目前大学生面临的主要心理健康问题,并从宏观上提出了解决这些问题的相应对策.     

大抓第一生产力,加速发展山西经济

强调要加速发展山西经济,必须解决好七个问题:科技与经济的关系问题、科技与人才的对关系问题、科技与管理的关系问题、普及与提高的关系问题、科技与应用的关系问题、应用与创新的关系问题以及党政一把手都来抓科技投入的问题.     

问题意识及其培养探究

创新始于"问题",即问题意识是创新思维的关键和前提。从对问题意识的理解着手,阐明问题意识的重要性,分析问题意识薄弱的表现和原因,论述问题意识培养的意义,探讨问题意识培养的有效途径,归纳问题意识培养过程中所存在的问题。     

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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