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1.
人居环境质量对大连城市经济发展的效应分析   总被引:1,自引:0,他引:1  
通过对大连人居环境变化的分析,研究大连人居环境变化的原因和城市人居环境对大连经济发展的促进作用.运用SPSS软件研究人居环境质量与经济发展成正相关作用,并运用数学方法构造函数、建立多元回归模型,分析城市人居环境与经济发展的关系,认为城市人居环境对经济发展的拉动作用非常明显.  相似文献   

2.
当前,城市化进程导致人居环境问题日益严重,同时由于技术、经济、社会、生态的发展,“就城市论城市”的传统设计手法已不合时宜.本文从区域层面对大连人居环境现状及存在问题进行分析,并且在大连市域城镇体系规划中探讨了如何从区域层面提升人居环境,最后给出了提升大连市域人居环境的若干措施.  相似文献   

3.
呼和浩特市人居环境生态设计初探   总被引:2,自引:0,他引:2  
对呼和浩特市住区人居环境的现状及存在问题进行了分析与评价.运用生态学原理,结合呼和浩特市社会经济的发展,对住区的人居环境进行生态设计,提出符合该城市的住区类型.阐述了现代生态小区的概念与特点.  相似文献   

4.
中国西北地区城市可持续人居环境综合评价   总被引:11,自引:0,他引:11  
从人居环境研究的内容出发,采用中国城市统计年鉴的数据资料,以城市人居环境相关内容建立可持续人居环境评价指标体系,运用因子分析法和聚类分析法对西北地区22座城市进行了分析评价,揭示出经济发展是影响人居环境可持续发展的最根本因素,并划分出4类人居环境,提出了优化对策.  相似文献   

5.
文章对人居环境的相关概念进行了分析与探讨,在人居环境尺度链中选取社区尺度作为研究层次,构建了城市社区人居环境质量评价体系,并以济南市市区的五个区(长清区除外)为例,运用模糊综合评判的方法对五个区的人居环境的等级进行了评价,并对评价结果进行了分析.  相似文献   

6.
讨论了城市人居环境建设的生态转型方法以及国际城市人居环境生态学研究动向。重点介绍了城市人居环境规划中的系统化、自然化、经济化、人性化趋势,并从观念与目标的转型,规划与设计的转颦和技术与材料革新等方面探讨了城市生态建设的转型方法。  相似文献   

7.
"以人为本"是人居环境建设的指导思想,本文阐述了"以人为本"的内涵,分析了当前城市人居环境建设中存在的问题,并结合《北京城市总体规划》,探讨了城市人居环境建设如何体现以人为本,最后指出了城市人居环境的发展趋势。  相似文献   

8.
王新荣  方蕙娟 《科技信息》2009,(33):I0291-I0291
在社会主义市场经济条件下,城市规划应多考虑城市空间对改善和提高居住环境的特殊重要作用.确保用最低的能耗创造出最佳的人居环境,使城市得以可持续发展。  相似文献   

9.
城市污水处理现状及可持续发展   总被引:1,自引:0,他引:1  
随着城市化进程的加快和经济建设的飞速发展,城市污水排放量也迅速增加,大量未经处理的污水任意排放,如果不能得到妥善处理,将给城市及水环境造成严重污染,影响人居环境质量和城市的可持续发展。从我国城市污水现状入手,分析了污水处理存在的问题,并提出了可持续发展的策略。  相似文献   

10.
随着我国城市化水平的提高,城市规模不断扩大,城镇人口密度加大,城市化带来的负面影响越来越大。城市化的发展,使一大批城市和城市群涌现出来,这种大规模城市扩张带来了一系列生态环境问题,出现了城市生态系统失调,环境污染,资源短缺,人居环境恶化等一系列问题,其中水资源紧缺,水污染加剧问题最为严重。  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.
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   

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 discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
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   

16.
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   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
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   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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