美丽的夏夜

正星星眨着眼睛,月亮悄悄地露出笑脸,萤火虫提着蓝色的小灯笼,在花丛中快乐地飞舞……这是一幅美丽的夏夜风景画。夏天的夜晚比白天凉快。晚饭后,我迫不及待地跑到广场上。看,广场上的人可真多呀!大人们有的在聊天,有的在散步,有的在唱歌,有的在跳舞,还有的在健身。小孩子们有的在滑滑板,有的在玩陀螺,有的在骑自行车,还有的在溜旱冰。我     

家乡的那一片绿

正我的家乡在铁观音的发源地——西坪。家乡的那一片绿,一眼望不到头。走进这绿色的海洋,如同鱼儿在海洋中自由地穿梭,又像是飞鸟在绿色的天空里尽情地翱翔。家乡的那一片绿,绿得沉郁,在阳光的照耀下,在微风的吹拂中,漾起了绿色的涟漪。小时候,我喜欢在茶园里玩。走在茶园的小道里,我总会情不自禁地吹起悦耳的口哨。小鸡跟在我后面,演奏着     

拓展小学语文课堂

语文是一门工具学科。生活中处处用语文,处处有语文。语文教师要善于拓展语文课堂,引导学生平时做个有心人,细心观察,不断积累,学校以外的大社会也是学习语文的课堂,而且这里比校园里的课堂要丰富得多,精彩得多。语文并不局限于书本,语文在大街上、在公园里、在邮件中、在活动中、在电视节目中……在户外学习语文。走在大街上,闪烁的霓虹灯,形式多样的店名匾牌,五花八门的广告铺天盖地。广告的创意者更是绞尽脑汁,     

直销企业应把赈灾当重大公关事件来重视

地震震动了山河,震垮了房屋,但是它震不倒我们的心,也震不垮我们中华民族的魂。我们的主席、我们的总理,我们的军队,我们的白衣天使,我们的志愿者都在一线,和受灾的人民在一起;我们的后方在献血,在捐款,在捐物,在救死扶伤,在帮扶安置,在谋划重建家园,我们万众一心,我们众志成城。在大灾难面前,我们各尽所能,各尽所力,我们义无反顾地选择了作为企业公民和社会人应该承担的责任。 赈灾还在继续,我们做过的事,即使已经尽力了也不能抹去其反映的缺陷;可是我们能做的,我们还可以做的事还很多很多,因此我们要总结经验,吸取教训。在灾难中成长,为了接下来的赈灾工作,也为了面对将来可能发生的一切。     

留白,思维放飞的空间

在化学教学中,给学生留点回味思考的余地,就能放飞学生的思维。在导入新课时留白,就能大大激发学生的学习兴趣;在授课时留白,就能激发学生的思维,促其自我感悟;在解题时留白,能培养学生独立思考的能力,促其自我顿悟;在结束课堂教学时留白,就能让学生自我回味,温故知新。在课堂评价中留白,就能培养学生的自信心。在布置课外作业时留白,就能提高学生复习功课的自觉性。     

明末清初:中西火药分水岭

"中国火药对世界的贡献,不仅体现在它改变了现代世界的格局,还体现在它影响了人类的生活。"中科院自然科学史研究所研究员潘吉星如是评价",以此看,明末清初无论如何都算是一个十字路口。"站在这个十字路口,最早发明火药的中国,在军用火器的道路上被西方远远甩在了身后,但却在民用烟火之路上一承前朝的绚烂,渐行渐远。     

军工科研院所促进产业发展的创新策略

长期以来,军工科研院所承载国防科技的重任,在自主创新中始终走在前列,具有人才、科技等基础优势。在新的发展时期,军工科研院所承载着国防科技建设和国民经济建设的双重使命。随着科研院所体制改制、央企并购重组、非核心军工领域开放竞争,军工科研院所逐步面向市场。市场竞争、国企考核的压力要求军工科研院所在未来的发展中不仅要在科技创新上领先,更要在产业发展上实现跨越。     

坐在宇宙飞船里的耶稣

在保加利亚多布尔斯柯村一家古教堂里,在大门的左手边,在众多的圣像中有一尊大家都熟悉的耶稣全身像。但如果仔细看便会有惊人发现:耶稣原来被画在宇宙飞船里!飞船的喷嘴、稳定器和排出的废气看得一清二楚。这座教堂初建于1122年。五个世纪之后,在土耳其统治时期曾经修复过,可根据历史资料记载,所有圣像、壁画和内部装饰都保留了原样。不过,为了在战争期间能区别于防御工事,当时的人们还是在教堂正面画了十字图案,以表示生活的演变。     

人民币升值：中国进口贸易发展与企业的应对策略

人民币在2007年有了小的升值。在今后,仍将继续升值,以反映人民币在国际市场上的真实水平。在人民币升值的同时,国有企业的生存又将有一翻新的挑战,同时机遇也毫无保留展现在我们的眼前。     

关于对冬季北方地区洗煤运输防冻的几点探讨

在煤炭开采、洗煤加工过程中为了降尘及水处理流程作业过程中,会有高达20％左右的水保留在煤中。在北方地区,气温低。有时温度低于零下30℃,所以在冬季煤炭运输过程中将会使大量的煤冻结在车箱上或冻结在一起,造成卸车困难,车皮周转延误．给企业的煤炭运输带来较大的经济损失。因此,研制开发新型高效液体防冻技术具有重要的意义。     

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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