基于逼近理想解法的第三方物流企业绩效评价与外包决策

利用逼近理想解法(TOPSIS)解决第三方物流企业绩效评价与外包决策问题.通过分析影响第三方物流企业经营状况的因素,确定了评价指标并建立了评价模型.经过对不同的第三方物流企业的经营状况进行了综合评价,结果表明,TOPSIS法更有效地利用了企业经营的历史数据,评价更客观、决策更准确.     

随机需求条件下考虑延迟支付的第三方物流企业融资定价研究

考虑由一个供应商和一个零售商所形成的供应链,建立了随机需求条件下第三方物流企业提供融资服务的定价模型。研究了供应商提供可延迟支付方式和第三方物流企业提供质押融资服务环境下,零售商最优订货量和最佳再订货点的行动决策,以及第三方物流企业提供融资服务的优化决策问题。最后通过具体算例检验了该模型的有效性,结果表明:在该模型下,零售商和第三方物流企业可以实现各自的最优目标。     

浅析第三方物流企业的绩效评价体系

本文首先叙述了第三方物流的概念及第三方物流企业绩效评价的必要性。随后,本文在分析了第三方物流绩效评价指标选取原则的基础上,着重从财务和客户两个方面构建第三方物流企业的绩效评价指标。最后指出第三方物流企业的绩效评价的重要性和作用。     

现代第三方物流供应商的选择

分析现代第三方物流的特点,并从功能、客户服务和稳定性等三个方面构建全面的评价和选择现代第三方物流供应商的指标体系;采用层次分析法确定各专家组成员以及评价指标体系各级指标的权重;详细阐述集成层次分析法和模糊综合评价方法选择现代第三方物流供应商的步骤;最后,通过算例说明方法的科学性和合理性.     

基于分散决策的VMI & TPL供应链收益共享机制研究

以供应商管理库存和第三方物流为背景,对第三方物流提供商、供应商和制造商在内的VMITPL供应链进行博弈分析,指出分散决策下参与者利益冲突会降低供应链效率。为提高分散决策下供应链的效率,提出基于分散决策的两方(第三方物流提供商供应商或供应商制造商)收益共享机制和三方收益共享机制。研究结果表明,相对于不存在收益共享的分散式供应链,采用两方收益共享机制可以提高供应链效率和所有参与者的利润;在两方收益共享机制中,制造商或第三方物流提供商在不参与两方收益共享机制时的利润更高,意味着不合作可能是更优选择;在三方收益共享机制中,为提高供应链总利润,第三方物流提供商在分散决策阶段将选择低于其成本的服务价格;尽管相对两方收益共享机制下的供应链效率更高,但三方收益共享机制仅当所有参与者讨价还价能力足够大时才会被采用。     

第三方图书物流中心绩效评价的内涵与范围

近些年来,物流成为一个新的经济热点,物流企业如雨后春笋般不断涌现。根据发达国家的物流实证分析表明,只有独立的3PL占物流总量的50%时,现代物流业才能形成。如何使正处于发展初期的物流行业能够健康、有序地发展壮大,关键要看第三方物流企业的发展情况,它直接影响着物流行业的发展。第三方物流企业要想健康的发展首先要找出自身的不足,绩效评价方法是找出企业不足的有效方法,因此研究第三方物流企业绩效评价方法为我们把握第三方物流企业发展的正确方向提供了非常重要的理论基础。     

第三方物流企业选择模型的建立与应用

在如今激烈的市场竞争中,为了提高自身的核心竞争力,越来越多的企业把第三方物流公司引入其供应链中,但是如何选择一个合适的第三方物流供应商则是困扰企业的一个严重问题。为解决这一情况,相关研究者建立了有5个一级指标,13个二级指标的物流供应商选择指标体系,并利用层次分析法对这一体系进行了计算,得出最优化结果。这一体系使核心企业能够方便快捷地选择物流供应商,将在很大程度上降低企业将物流业务外包时所遇到的风险,提高核心竞争力,降低成本。     

第三方物流企业绩效评价方法分析

近些年来,物流成为一个新的经济热点,物流企业如雨后春笋般不断涌现。根据发达国家的物流实证分析表明,只有独立的3PL占物流总量的50%时,现代物流业才能形成。如何使正处于发展初期的物流行业能够健康、有序地发展壮大,关键要看第三方物流企业的发展情况,它直接影响着物流行业的发展。第三方物流企业要想健康的发展首先要找出自身的不足,绩效评价方法是找出企业不足的有效方法,因此研究第三方物流企业绩效评价方法为我们把握第三方物流企业发展的正确方向提供了非常重要的理论基础。     

M公司物流配送问题优化研究

随着电子商务的飞速发展,传统的物流运营模式已经无法满足电子商务的飞速发展,配送成本高、配送周期长、服务质量差、物流信息化程度低等物流配送服务的滞后,已经成为制约电子商务发展的瓶颈;与此同时,第三方物流已经在电子商务模式下日渐凸显出来,物流外包这种运营模式已经被很多企业特别是电子商务企业所青睐。对于B2C的电子商务企业而言,运用物流外包可以使企业将主要精力放在自身的核心竞争力上,减少建设物流团队的投资成本以及投资风险,从而有效地提高配送服务质量,进而提高市场竞争力。对此M公司提出引进多家物流供应商竞争,防止多级物流外包,加强与物流供应商信息化对接,加强物流外包风险控制,建立一套有效的物流供应商引入流程等一系列提升物流绩效的策略。最后提出对物流供应商的选择更加有效合理,有效地降低物流风险,提高物流效率。     

运用AHP法对供应链中供应商的评价分析

在现时市场环境下进行供应链管理,核心企业(即制造商)必须适时的对现有供应商进行评价,以完善和提高供应链系统的能力。文章结合现时的市场环境,分别提出和确定了原材料供应商和第三方物流供应商的评价准则和评价指标,并运用AHP法分别对原材料供应商和第三方物流供应商进行了评价,进而分别建立了原材料供应商和第三方物流供应商的评价模型及评价指标体系。     

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.     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

A computer generator for randomly layered structures

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

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.