城市负荷空间分布的聚类感知方法

基于大数据技术准确把握配电网负荷发展态势将为精细化规划提供依据，解决城区供电分区混乱问题.本研究提出城市负荷空间分布的聚类感知方法，首先开展用户信息收集筛选建立样本数据集，采用基于密度峰值的快速聚类算法，以各电力用户样本点的局部密度和样本间距为指标进行聚类，聚类所得群簇对应于一定容量变电站供电分区的负荷分布，以聚类群簇作为基本单元，分析群簇属性指标包括群簇簇头空间坐标、群簇负荷总量、群簇负荷密度、群簇用户总数、群簇最大半径、群簇平均半径等，建立以群簇属性为要素的城市电力负荷态势感知模型，在特定的时间和空间对城市电力负荷群簇进行分析以准确把握城市发展态势；最后以某城市供电网格为例，验证所提方法有效性.     

基于Multi-index LQ与CIC指数的集成评估框架

将多指标区位商计算和工业集群竞争力评价相结合,生成集成的工业集群竞争力评估框架,运用统计数据,可对我国区域工业集群现状及工业集群竞争力水平进行分析.结果表明,区域工业经济存在4种类型,即集聚的竞争优势产业、集聚的竞争劣势产业、非集聚的竞争优势产业和非集聚的竞争劣势产业;据此,我国区域工业经济的支柱产业和主导产业可以被确定.     

能量自治无线电能传输微网及其簇群机制

针对无线电能传输微网无外部能量注入的能量自治情况,提出一种不均匀簇群机制及其相关算法.节点群周期性进行簇群选举,簇首由节点轮流担当,并考虑候选节点能量特性,以保证网络能量负荷均衡,同时通过簇群的不均匀结构在负载节点附近建立能量缓冲带以提升能量供应的稳定性,引入簇间节点减少簇群间能量传输损耗.具体分析了簇群机制的能量损耗并建立了相关网络能量损耗模型.仿真结果表明:相对普通簇群机制,提出的无线电能传输微网簇群机制有效地改善了能量负荷均衡特性,从而提升了网络最大稳态期.     

基于主成分分析的中国工业科技竞争力评价

科技竞争力是产业竞争力中最重要的构成因素.产业科技竞争力综合评价对于全面、科学、客观地反映产业依靠科技进步提升竞争力的潜力具有重要的参考价值.评价产业科技竞争力的方法有很多,尝试采用主成分分析法,举例对2002年中国工业主要10个产业的科技竞争力进行综合评价,并依据评价结果对中国工业主要产业科技竞争力进行分析.     

我国西部地区工业企业竞争力优势的实证分析

企业竞争力是一个可以从多层面表述的综合性很强的概念,针对不同的研究对象和研究目的有不同的解释。一个指标或部分指标是不足以反映企业的综合竞争力状态和水平。因此,就必须要根据工业企业竞争力的定义和特点,用广泛、集成的眼光构建一个层次分明、结构完整、指标可比的指标体系。并通过该指标体系,采用实证的方法分析工业企业发展进程及存在的问题,进一步挖掘我国西部工业企业的发展优势,为评价西部工业企业综合竞争力提供服务。     

逆向物流供应商的二元语义多属性群决策

为企业选择最佳的逆向物流供应商以降低运营成本,提高企业竞争力,建议采用二元语义多属性群决策法进行决策。将所有评价指标的语言评价值转化为二元语义,通过最小化决策群对评价指标判断的偏差为各评价指标赋权,运用二元语义混合有序加权平均以得到备选方案的最终评价值,根据备选方案最终评价值的大小选择最优供应商。通过设计具体算例与直觉模糊多属性群决策法比较发现:基于二元语义多属性群决策法不仅减少了主观偏好评价的影响,而且评价结论更加精细。     

黄河流域高质量发展下济源工业竞争力灰色关联分析

工业是黄河流域多数经济体的支柱产业,对工业竞争力的研究是黄河流域高质量发展的必然要求.工业竞争力的影响因素众多,在产业竞争力波特钻石模型基础上,结合济源工业发展实际构建了 6个一级指标和19个二级指标,采用灰色关联法对济源工业竞争力进行了分析,结果显示济源工业与政府财政收入关联度高,但整体的创新能力较低、研发投入不足.提出济源工业要紧抓黄河流域高质量发展机遇,协调发展传统产业和新兴产业,加快产业集群化,合理构建产业布局,以创新驱动工业产业转型升级.     

河南省城市旅游竞争力综合评价模型的应用研究

研究了河南省城市旅游业竞争力,选择加权求和多指标综合评价模型,即T=∑WiPi(i=1,2,3,…,i=1n),其中T为城市旅游业竞争力的综合值,Wi为第i个评价指标的权重,Pi为第i个评价指标的分值,n为评价指标的数目,计算城市旅游业竞争力的数值.依据综合值,给出城市旅游业竞争力提升的对策.     

基于VIKOR混合多属性群决策的供应商选择

为科学决策选择供应商,企业应吸纳有竞争力的供应商参与竞争,通过建立供应商评价指标体系,充分考虑供应商的比较优势,建构科学评价模型进行决策。根据混合多属性群决策的特点,采集混合的主客观评价指标信息,形成了科学的集结与规范化方法;然后运用层次分析法和离差最大化法相结合,确定评价指标权重,构建了VIKOR混合多属性群评价模型;最后以第三方物流供应商选择为算例,形成决策结论。     

基于熵权TOPSIS法的国内机场竞争力评价

从机场基础设施建设、机场运营规模、机场服务质量、机场交通地理条件4个方面建立了评价机场竞争力的10个指标,选取36个国内机场作为研究对象,使用熵权法计算出10个评价指标的权重,利用TOPSIS法建立了机场竞争力评价模型,并对机场竞争力进行了评价.结果显示:从机场竞争力评价指标权重看,决定机场竞争力的核心指标有货邮吞吐量、旅客吞吐量、飞机起降架次、跑道数量和机场投诉件数.要想提高机场竞争力,必须加强机场基础设施建设,特别是增加跑道数量.从竞争力排名结果看,中西部机场竞争力明显弱于东部机场.特别是中部地区,只有郑州和武汉两个城市入围竞争力前18名,甚至低于西部的数量,促进中部崛起刻不容缓.因此,我国应该加大对中西部机场的扶持力度.     

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.     

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.     

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.     

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.     

A computer generator for randomly layered structures

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