数字图书馆版权研究论文计量分析

对1995—2010年我国数字图书馆版权研究论文进行了统计,筛选出数字图书馆版权研究的核心著者、核心期刊和高频被引论文,定量分析了我国数字图书馆版权研究论文的增长态势、著者分布和期刊分布情况。     

1997—2009年我国数字图书馆知识产权问题研究文献统计分析

对1997—2009年间我国数字图书馆知识产权问题研究的文献从发表年代、来源期刊、期刊类型、著者等几方面进行了统计分析,总结了我国数字图书馆知识产权方面研究的发展状况。     

近10年我国数字图书馆用户研究综述

采用文献调查法对2005-2014年间我国数字图书馆用户研究的相关论文进行了检索,从文献年代分布、期刊分布、主题内容等方面进行了统计分析,以全面了解我国数字图书馆用户研究态势.     

基于文献计量分析法的我国数字图书馆研究进展

数字图书馆是学术界的研究热点,从文献计量法角度对我国数字图书馆领域研究文献进行统计分析,并结合内容分析法,对数字图书馆研究主题及未来发展趋势做进一步探讨。首先利用科技情报综合分析系统,对万方、维普、知网3个数据库中收录的我国在1998年1月至2016年12月期间发表的数字图书馆研究论文进行统计,然后计算出前199篇高被引论文并作为具体研究对象进行分析,包括时间分布分析、研究人员分析、研究机构分析、关键词分析等,最后选取部分高被引论文进行内容分析。研究有利于了解我国数字图书馆研究的最新现状和研究热点,为进一步研究提供参考。     

信息时代我国数字图书馆的建设及展望

文章阐述了数字图书馆的特征和建设体系,通过图表列举了上海数字图书馆和深圳数字图书馆不同的特色并对它们的优势与劣势进行了分析比较,提出了我国数字图书馆存在的问题与不足。最后,探讨了我国数字图书馆相应的建设对策和展望。     

数字图书馆个性化服务研究

对数字图书馆个性化服务的内涵和外延进行了分析,介绍了我国的数字图书馆个性化信息服务的现状和存在的问题,并对数字图书馆个性化服务进行了展望。     

我国数字图书馆发展历程及发展策略

回顾了我国近十几年数字图书馆建设的发展历程,在对我国数字图书馆建设中存在问题进行分析的基础上,提出了我国数字图书馆的发展策略。     

论数字图书馆建设

依据数字图书馆的概念和数字图书馆文献信息的特点,结合我国数字图书馆建设现状和发展趋势,重点对高校数字图书馆建设中工作人员数字化素质、数据库建设、馆藏结构调整等3方面的问题进行了论述。     

数字图书馆及其建设中若干问题的思考

阐述了发达国家关于数字图书馆的研究现状和我国在这一领域的研究进展，分析了数字图书馆的体系结构，特点，功能及其关键技术，提出对中国数字图书馆研究的几点见解，指出目前我国有关数字图书馆建设涉及的问题与解决措施。     

2012年—2015年我国数字图书馆论文统计研究分析

采用文献计量的方法,对CNKI中国期刊全文数据库中2012—2015年4年间关于数字图书馆的文献从年代分布、作者分布、来源期刊分布以及核心作者统计等方面进行了统计和分析.本文科学地反映出近年来我国数字图书馆领域发表论文的状况,从而揭示目前数字图书馆的研究热点和值得高度关注的核心期刊、核心作者、核心问题等内容,以期为数字图书馆领域的进一步研究提供借鉴.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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