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1.
调查了佛山市中心商务区(CBD)静态交通特征,对实测数据进行分析,导出了静态交通需求的分析模型,对解决佛山市中心商务区静态交通问题作了探讨,提出了相应的控制策略。  相似文献   

2.
北京市中心商务区发展阶段分析   总被引:6,自引:0,他引:6  
北京在向国际化大都市迈进的过程中,中心商务区(CBD)建设已成为北京未来发展的重点之一.通过对中心商务区发展阶段的总结,将北京与国外一些首都城市进行比较,明确北京中心商务区的发展阶段,分析存在的问题,并预测其发展趋势. r  相似文献   

3.
本文首先简单介绍了城市中心商务区(CBD)的定义及其基本特征,然后从系统协调和长远的角度出发,分析研究了现代城市交通建设对CBD历史地位和作用的巨大影响,并以此指出城市交通建设需要超前意识和明确的交通政策。  相似文献   

4.
浅谈人体生物节律与运动损伤姚鑫俞晓明(贵州师大体育系贵阳550001)(贵阳七中贵阳550001)近年来,人体生物节律理论已在国内外许多领域中得到了运用,并取得了良好的效果。但是在体育领域中运用的范围还很小,只是一些高级运动员用以预测体力状况,能否发...  相似文献   

5.
贵阳市城市建筑生态建设初探   总被引:1,自引:0,他引:1  
从贵阳的城市生态定位,城市生态建设,引入自然的空间等方面对贵阳市城市建筑生态设计进行了一系列的初探,提出了引入自然的贵阳城市生态建设方式。  相似文献   

6.
对赫坎按蚊种团内中华按蚊、嗜人按蚊、贵阳按蚊、昆明按蚊的幼虫唾腺染色体游离端特征作了比较研究.结果显示,嗜人按蚊与其它3种按蚊亲缘关系较远,为独立种;昆明按蚊、贵阳按蚊与中华按蚊亲缘关系较近,但仍为独立种.贵阳按蚊、昆明按蚊的幼虫唾腺染色体图系首次报道.  相似文献   

7.
本文报道了贵阳地区北草蜥的栖息环境、活动规律和冬眠情况及活动习性。北草蜥在贵州分布很广,贵阳地区为常见种类,主要以危害农林生产的昆虫为食,是一种于农林业有益的动物。  相似文献   

8.
抗战时期是贵州散文大发展的时期。1937年抗日战争全面爆发后,西南成了抗日救亡的大后方,大批文化人也来到贵阳,或经贵阳去重庆、昆明等地,春先艾、谢六逸等黔籍作家也先后回到贵阳。另外,还有不少流亡学生朱贵州读书,此时贵阳、遵义等地文化空气十分活跃,创办和内迁的报刊达对余种之多,特别是春先艾先后主编的文艺副刊《每周文艺》和《新垒人谢六逸主编的《文讯》都是很有影响的报刊。抗战时期贵州的散文作者比抗战之前大为增加。从思想内容来看,宣传抗日救亡,反映抗战现实,是这个时期散文的主旋律。其他有关抒写个人的感受、情…  相似文献   

9.
本文报道了贵阳地区北草晰的栖息环境、活动规律和冬眠情况及活动习性。北草晰在贵州分布很广,贵阳地区为常见种类,主要以危害农林生产的昆虫为食,是一种于农林业有益的动物。  相似文献   

10.
利用贵阳市1961~2000年的气温,降水资料,应用统计方法分析了贵阳近40年的气候变化趋势。研究结果发现,贵阳气温有上升趋势,但是上升幅度较小。四季气温变化幅度不大,其中春季气温下降趋势在四季变化中最明显,冬季气温上升幅度最大。降水则呈微弱下降趋势,夏季降水上升,春季降水下降。在此基础上,进一步分析了贵阳从1961年以来的严重冷暖冬时间与多雨少雨年的出现规律.  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
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-  相似文献   

19.
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-  相似文献   

20.
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  相似文献   

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