基于熵权的G-FME厂址选择综合评价模型

鉴于工业企业厂址选择方案评价涉及到经济-技术-社会-环境等不同子系统和不同层面的多个指标,针对其评价指标繁多,且不少单项因子不相容的问题,以模糊物元理论(FME)为基础,引入灰色分析法中灰色关联度,建立厂址选址评价模型——G-FME模型.在模糊物元法的基础上考虑选址方案评价系统的灰色特性.采用熵权确定指标权重,克服人为因素的影响,使得方案比选的选择更加客观公正,准确性有了很大的提高.最后运用该模型进行工程实践应用分析.结果表明该模型理论简洁,可操作性好,具有很好地实用性,可为工业企业厂址选择方案评价提供科学合理的决策依据.     

基于多层次灰色关联法的污水厂选址决策模型

针对目前城市污水处理厂厂址选择中存在着较大的主观性和不确定性,以及影响因素的多指标、多层次的特点。将灰色关联分析法与层次分析法相结合,运用层次分析法确定评价指标权值,以各方案的综合灰色关联度作为评判准则,建立了厂址选择方案的层次分析灰色关联度耦合模型。将其运用于重庆市奉节公平镇污水处理厂厂址的选择,结果表明该方法克服了传统选址方法的缺点,是一种切实可行的选址决策方法。     

基于地理信息系统与综合分析法的海水淡化厂选址

随着沿海地区淡水资源日益短缺,海水淡化产业有着广阔的发展前景,海水淡化厂厂址的合理选择成为海水淡化应用研究的热点.以红石崖街区为例,通过分析海水淡化技术特点,确定了拟建海水淡化厂的淡化工艺;根据选址的空间要求,运用ArcGIS软件确定候选厂址,综合分析经济、海域水质、社会和政策因素,从候选厂址中选出最适宜建设海水淡化厂的地址.结果表明:该方法综合考虑多种因素,可直观得出海水淡化厂适宜厂址,具有一定的科学性和可操作性.     

层次分析法在城市生活垃圾焚烧发电厂选址中的应用

针对城市生活垃圾焚烧发电厂选址这一项复杂的系统工程,用层次分析法使复杂问题简单化,主要是对具体候选厂址进行全面的多目标决策分析,计算出各厂址的相对综合适应性评价数值,加以比较,以获得最佳选址.从环境因素、经济因素、社会因素和法规因素4个方面进行分析,用取权重的定量化方式进行研究,比较各决策因素的重要程度,得出垃圾焚烧发电厂选址应该以垃圾处理资源化为首要目标进行选择的结论.     

浅析城市污水处理厂建设选址的影响因素

近年来,国内城市污水处理厂基础设施建设进度不断加快,城市污水处理厂建设作为城市水污染防治的主要基础设施,已受到各级政府部门的高度重视.作为城市污水处理厂建设前期筹备阶段的厂址选择非常关键,它关系着整个污水处理工程建设的方案合理性,选址时有必要综合考虑当地规划、环境保护、处理工艺以及总投资费用等影响因素,确定最优化厂址.     

基于灰度关联的有色金属选矿厂厂址评价

本文在运用灰关联分析法评价成本因素与非成本因素综合存在的有色金属选址问题的基础上,运用灰关联分析,计算各有色金属选矿厂厂址方案的优劣关联度,从而确定最优方案。     

基于模糊层次法的火电厂选址研究

通过分析火电厂厂址选择的特点,从地理影响因素、技术影响因素、经济影响因素以及社会影响因素四个方面构建火电厂选址的评价体系,采用层次分析法确定各子指标权重,并运用模糊评价法进行综合评价。实例验证表明,相比传统方法能够更好地适应厂址优化决策,具有很好的应用前景。     

遗传算法在城市污水处理厂污泥处理处置项目选址中的应用

针对我国大中城市污水处理厂污泥处理处置项目选址问题,在传统选址决策基础上,以处理处置成本最小为目标建立数学模型,进行了目标函数的求解分析.以西安市污水处理厂污泥处理处置项目选址为实例,采用污泥生产烧结砖的处理处置方案,运用遗传算法进行了选址优化,在传统决策初步确定15个备选厂址基础上,得到了建设1~5个污泥处理处置工程项目的优化方案,包括相应的选址、生产规模、运输费用、运输路径等,通过讨论与分析,提出了建设3个污泥处理处置工程项目的建议,为选址决策提供了科学依据.     

用DEA方法评价有色企业厂址选择方案

引入系统定量评价方法"数据包络分析"(DEA)法,到有色企业厂址选择方案评价中。拟定了"数据包络分析法"在评价有色企业厂址方案中所需要的输入、输出因子,利用此方法的基本模型CCR模型对厂址选择实例方案做评价,以说明此方法的可靠性和可操作性,希望为有色企业厂址选择方案评价提供有效方法,为有色企业厂址选择方案决策提供重要的参考价值。     

BEA在厂址选择中的应用

通过用数据包络分析（DEA）方法，分析厂址方案中有形成本（定量因素）与无形成本（非定量因素）之间的关系，并与优缺点比较法、加权因素法、重心法等其它方法相比较，说明DEA方法是一条适用于厂址方案选择的有效方法。     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

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.     

A computer generator for randomly layered structures

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

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

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.