基于投影寻踪模型的企业核心竞争力理论研究

企业发展过程中其内在的实力对企业的持续发展起到非常重要的作用,关于企业竞争力的研究近年来多趋向于核心竞争力的研究,针对核心竞争力的定义、特点以及在企业中的实际表现,根据量化分析以及企业核心竞争力的特点引入量化分析工具——投影寻踪模型,根据投影寻踪模型的处理数据和处理结果,在理论上将投影寻踪模型与企业核心竞争力相结合,系统的构建出企业核心竞争力的切合实际应用的量化分析体系。     

浅谈企业如何培育、提升核心竞争力

核心竞争力是企业获取持续竞争优势的来源和基础,企业要想在日趋激烈的国际市场竞争中有所作为,就必须构建和提升自己的核心竞争力,才能获得生存和发展机会。本文分析了企业核心竞争力的特征及现状,提出了培育企业核心竞争力的途径和方式。     

中国企业核心竞争力的现状及对策分析

企业要获得持信性竞争优势,必须培育自己的企业核心竞争力。我国企业在核心力方面意识薄弱,必须从企业的内部和外部方面来打造和提升核心竞争力。     

如何培育企业的核心竞争力

核心竞争力企业生存和发展的关键,核心竞争力的培育、维护和提升是一个循环往复的重复过程,一个企业要想在市场竞争中保持持续的优势,就要不断审视自己和竞争对手,不断学习和创新,不断培育、维护和提升自己的核心竞争力。     

浅谈企业核心竞争力的培养

核心竞争力是一个企业保持持续竞争优势的源泉,是企业生存和发展的关键,核心竞争力的培育、维护和提升是一个循环往复的重复过程,一个企业要想在市场竞争中保持持续的优势,就要不断审视自己和竞争对手,不断学习和创新。不断培育、维护和提升自己的核心竞争力。     

企业核心竞争力的Web挖掘

为了解决如何让提高基于虚拟企业的企业核心竞争力问题，分析了企业核心竞争力信息在虚拟企业合作伙伴选择过程中的重要性，提出了一种企业核心竞争力信息的Web挖掘模型，建立了企业核心竞争力的知识库，并给出了企业核心竞争力信息Web特征提取的算法，通过实践验证，具有良好的效果。     

创新提升我国企业核心竞争力问题研究

21世纪是知识经济的时代,面对全球化的市场竞争,我国企业要在激烈的国际竞争中获得持续的竞争优势,归根到底在于培育自己的核心竞争力。创新是提升我国企业核心竞争力的关键。本文从制度创新、技术创新、管理创新和文化创新来分析如何构建企业的核心竞争力,通过企业核心竞争力的构建来提高我国企业在国际市场上的竞争优势。     

浅谈企业核心竞争力的培育提升

运用经济动力学理论构建了企业核心竞争力动力学模型,并从5个方面进行了诠释,最后提出了培育提升企业核心竞争力的新模式。     

中小企业如何建立核心竞争力

现今我国中小企业面临的一个突出问题是普遍缺乏核心竞争力。现代企业的竞争体现为一种优势竞争，为了增强这种竞争优势，中小企业必须找出和培养自己的核心竞争力。介绍了企业核心竞争力的涵义及特征，分析了我国中小企业的竞争力状况，提出了中小企业建立和培育核心竞争力的基本思路。     

提升企业核心竞争力的思考

从市场经济发展的趋势谈企业只有提高核心竞争力才能在竞争中立于不败之地，同时企业应以技术创新为核心，以诚信为保证，以创建品牌为渠道，以企业文化为动力，全面提升自己的核心竞争力．     

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.     

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.     

A computer generator for randomly layered structures

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

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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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。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

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