征稿启事

<正>《云南民族大学学报(自然科学版)》为双月刊,逢单月10日出刊,主要刊登基础学科和工程技术的研究性学术论文.目前栏目有:化学与生物、民族药资源、数学及应用数学(经济、金融、统计等方向)、信息与计算机科学、电子电气与自动化、网络与通信技术、无线传感器网络技术、物理及相关学科、教育学与心理学、体育     

我国低压电器发展趋势展望

近年来,低压电器技术随着电子学、计算机科学、电弧等离子体物理、信息和网络以及材料科学的进展,取得了巨大的发展。本文以国内外最新资料为依据,从低压电器智能化与网络化,产品开发手段,环境保护和材料,传统低压电器的发展等几方面介绍低压电器近期发展动向。     

物理网络教学资源建设

随着计算机网络技术的发展,网络教学必将成为一种重要的教学手段,其教学模式也将会呈现多样化,有关网络教学的研究也将会进一步深化.文章从物理网络教学的理论入手,指出了网络教学在心理学、物理教育学等方面的理论依据,介绍了物理网络教学资源--网站制作的过程及评价,对网络资源在物理教学中的应用提出指导性的建议.     

论计算机网络安全问题及防范措施

网络安全是一门综合性学科,涉及到计算机科学、网络技术、密码技术、通信技术、信息安全技术、信息论等多种学科.随着计算机网络技术的广泛应用和飞速发展,网络安全已成为人们关注的焦点,并极力研究和探求科学、有效的安全防范措施.     

新工科背景下的计算机科学与技术专业建设研究

目前,信息已经渗透到社会各个领域,以云计算、大数据、区块链、物联网、机器学习和神经网络为技术基础的智能时代正到来,智能时代深刻地影响着计算机专业教育.从云南民族大学计算机科学与技术专业实际情况出发,系统介绍了计算机科学与技术专业的定位、发展目标以及基础条件,并以新工科为背景,探讨了专业建设中的具体内容以及改革举措.     

赛博科学观下的情境化知识

西方科技文化发展至今，赛博科学观成为重要的文化思潮之一。赛博反映了当代人类身体受到现代生物和信息技术的深远影响。赛博科学观的形成顺应科技哲学后实证主义实践转向的趋势，从哲学层面上来看，赛博的出现意味着打破传统的二元论观点，同时意味着一种各异质性要素相互糅合的赛博新本体，与赛博科学观相契合的情境化知识理论强调不同声音、不同视角之间的相互碰撞和交流，为科学客观性的解读提供了一个全新视角。     

计算机网络技术中大数据时代的人工智能应用研究

随着我国科学的进步和时代的发展,计算机网络技术的应用是大势所趋,通过计算机网络发展中技术的应用。当新时期科学技术应用到计算机网络技术发展中、大数据技术和人工智能中等,这就是计算机网络技术融合形成的一种新型技术,通过这种新型技术和我们的网络安全技术相结合,可以满足未来计算机网络技术发展的需要。该文将对计算机网络技术、数据时代人工智能应用进行分析和研究,为人工智能在计算机领域中提供一些相应的帮助和参考。     

赛博空间隐性知识内涵及相关研究

信息时代,大量知识以数字化形式存在于赛博空间中,但是特定类型的数字知识只能被特定的数字系统(程序)直接使用,而不能被其它类型的数字系统充分利用,数字知识呈现相对"隐性"特征,深刻影响了数字知识的共享利用。针对这一问题,在对管理学和信息科学领域等隐性知识相关研究的基础上,提出了赛博空间隐性知识概念,从数字化的角度扩展了隐性知识的内涵,以知识科学与工程领域的数据挖掘和知识发现、机器学习、用户模型、企业应用集成、网格等方面,分析了赛博空间隐性知识的研究现状,并就传统隐性知识和赛博空间隐性知识的区别与联系进行了辨析,以及对下一步工作进行了展望。.     

XML技术的跨数据库文献检索

随着计算机和网络技术的不断发展,电子资源类文献资料日益丰富,通过XML技术的跨数据库文献检索系统成为目前信息化建设中一个重要的课题.本文综述了XML技术在跨数据库文献检索中的应用.     

全国高校计算机考试机试评分系统方案设计

随着计算机的日益普及、信息技术和计算机网络的迅速发展,利用信息技术和网络技术实现计算机无纸化、自动化考试势在必行.本文阐述了全国高校计算机等级考试一级机试考试评分系统的方案设计和实施过程方案.     

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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