沈阳城市水绿生态体系建设分析

运用城市发展生态理论，分析了建设城市水绿生态体系的基本原则，同时结合沈阳中心城区的水绿现状，分析其优劣势，在此基础上构建沈阳城市水绿生态体系，并对生态体系建成后可能产生的生态效益作出预测分析。     

多晶硅铸锭炉热场底部改进的数值模拟研究

多晶硅铸锭炉热场的优化改进对于生长高质量的多晶硅极为重要。本文结合计算机数值模拟，对多晶硅铸锭炉热场的底部进行优化，并分析了这一项优惠对温场，流场和界面的影响。模拟结果表明，热场优化后，杂质分布更加均匀，更有利于定向凝田过程。     

MODIS遥感数据的沈阳市植被变化规律

为确定2001-2011年间沈阳地区植被的分布特征和年际变化规律,采用NASA地球观测系统(EOS)提供的MODIS陆地植被指数产品MOD13A3,对沈阳地区进行分析,用归一化植被指数(NDVI)作为植被生长状态指标,以2001年植被指数为基准,用其它年份的植被指数与基准作差值处理,根据NDVI变化数据分级标准进行分级,分析了2001-2011年间沈阳地区植被的分布特征和年际变化规律.结果表明:沈阳地区植被覆盖密度由城区中心向周边逐渐增大;2001-2011年沈阳植被总体呈退化趋势;2002-2004年,沈阳城区边缘的植被有轻微退化外,其他地区植被均呈现中度和轻微改善;2005年以后沈阳市城区边缘的植被退化严重;在2008和2010年间,沈阳市周边地区如东陵区东南、苏家屯东南部、沈北新区西南部和于洪区东南部植被均有轻微和中度改善.     

近47年城市化发展对沈阳区域局地气候的影响研究

利用1959-2005年沈阳及周边郊区4县（康平、新民、法库、辽中）台站的气候观测资料,研究分析了沈阳城区、郊区气温、降水量、相对湿度、风速的变化趋势和特点。在此基础上,探讨了城市化发展对沈阳区域气候变化产生的影响。研究发现：1) 近47年来,沈阳平均气温上升显著,其中冬季、春季增暖幅度最大,夏季最弱。同时,沈阳郊区增暖幅度略大于城区增暖幅度。2) 沈阳年降水量、相对湿度、平均风速整体均呈下降趋势,降幅以平均风速最大,降水量最小。沈阳降水量的季节变化比较复杂,冬季降水量轻微增加。分析结果显示,沈阳城市化发展对区域局地气候产生了重要影响,尤其是近年来对郊区气温影响显著。另外,城市化进程对平均气温、风速的影响比其对相对湿度、降水量的影响更为显著、直接。     

近47年城市化发展对沈阳区域局地气候的影响研究

利用1959—2005年沈阳及周边郊区4县(康平、新民、法库、辽中)台站的气候观测资料,研究分析了沈阳城区、郊区气温、降水量、相对湿度、风速的变化趋势和特点。在此基础上,探讨了城市化发展对沈阳区域气候变化产生的影响。研究发现:1)近47年来,沈阳平均气温上升显著,其中冬季、春季增暖幅度最大,夏季最弱。同时,沈阳郊区增暖幅度略大于城区增暖幅度。2)沈阳年降水量、相对湿度、平均风速整体均呈下降趋势,降幅以平均风速最大,降水量最小。沈阳降水量的季节变化比较复杂,冬季降水量轻微增加。分析结果显示,沈阳城市化发展对区域局地气候产生了重要影响,尤其是近年来对郊区气温影响显著。另外,城市化进程对平均气温、风速的影响比其对相对湿度、降水量的影响更为显著、直接。     

沈阳市生态足迹变化特征研究

以《沈阳年鉴》统计资料为依据，对1999-2003年沈阳5a的生态足迹进行了实证计算和研究，从纵向比较分析了沈阳市生态足迹的变化规律及其原因，研究结果表明：沈阳市生态赤字从1999到2001年稍微有些下降，而2001年后又呈逐年上升的趋势，其主要影响因素是由于资源过度消耗、重工业膨胀、人口急剧增长及耕地面积的减少等。     

生态城区的可持续发展取向研究——以福建泉州丰泽区为例

以福建建设生态省为契机,建设生态城区是促进丰泽区经济社会可持续发展的重要战略措施。要实现丰泽生态城区可持续发展应当以循环经济为依托,科学、合理调整产业结构和工业布局,大力发展环保型生态工业;优化农业产业结构,大力发展城市生态农业;整合资源,大力发展生态观光休闲旅游业;构建综合资源生态网,建设生态中心城区。     

生态城市建设中的城市开敞空间系统优化——以辽中县中心城区为例

通过城市开敞空间系统优化来促进生态城市建设的步伐,是推动城市进入可持续发展状态的重要途径。本文通过阐述生态城市建设的意义和要求,城市开敞空间优化的必要性和需解决的关键问题,并结合辽中县中心城区的实际情况解析其各个要素组成、优化,最后努力做到辽中县中心城区城市开敞空间的系统优化。     

德阳市热场及其变化的遥感分析

研究采用1988、2000和2011年夏季的热红外遥感影像反演德阳市的地表亮度温度,并对德阳市域及其市区的热场特征及其变化规律进行了分析.研究成果能够为德阳市的生态环境保护和可持续发展提供参考依据.     

苏州土地资源利用中的生态安全问题

基于苏州2006-2010年相关统计资料,分析当前快速城市化进程中土地资源利用方面日益突出的生态安全问题。结果表明,苏州人均土地面积持续降低,生态亏损严重;城市建设用地扩张,空间利用效率不高;耕地量质同降,粮食安全遭受威胁;生态空间相对稳定,生态效益低;中心城区用地结构不尽合理,人居环境有待改善。为此提出转变城市化发展模式、强化土地利用规划管理、加强城市生态空间建设、优化中心城区土地空间布局等推进土地资源可持续利用的策略。     

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