基于质量工程的教学改革项目管理系统设计与研究

高校信息化建设速度的不断加快,使得高等教育在教学方式、方法、内容、手段等方面都发生了巨大的变化．高校质量工程建设一直是国家高等教育工作的关注重点,而教学改革项目管理工作则是质量工程建设环节中的重要组成部分．如何保证高校教育质量,以质量工程项目带动高校自身水平发展已成为一个亟需解决的问题．针对上述问题,本文设计了基于质量工程的本科高校教学改革项目管理的系统,集质量工程项目公告管理、项目管理、项目评审等功能于一体,目的是提高高校质量工程项目信息化管理水平,从而促进高校教学改革进程,整体提升高校教育质量．     

基于概率神经网络的高校毕业生学位评审预测

客观地、高效地、准确地对高校毕业生获得学位进行评审,是高校面临的一个重要问题.本文首先提取影响毕业生学位的评审五大指标：学习成绩、实习成绩、论文成绩、英语四级、计算机等级,然后建立了概率神经网络的高校毕业生学位评审模型.Matlab仿真实验表明,该方法评审学位简单快速且准确率较高,具有良好应用前景,也为今后高校学位评审...     

基于变权-理想点-潜在主题（VW-TOPSIS-LDA）的科技项目评审专家动态综合评价方法研究

项目评审专家是科技项目评审活动的主体，基于专业领域开展评审专家动态综合评价，对保障项目质量，提升科技项目产出效益，建设科技强国具有重要意义。本研究通过对科技项目评审专家特点的分析，从基础资质、专业水平、评审水平3个维度构建科技项目评审专家评价指标体系，首次提出一种基于变权-理想点-潜在主题（VW-TOPSIS-LDA）的动态综合评价模型，并以中国空间站空间科学项目评审专家为例进行实证分析，验证了评价有效性，识别了主要障碍因素。研究结果表明，该模型能够为科技项目评审专家管理提供参考，并进一步优化专家结构，提高项目评审质量。     

基于信息化的项目教学模式设计

根据公共计算机程序设计课程教学的特点,在建构主义学习理论的指导下,从学生知识的掌握和创新意识培养的教学目标出发.分析了基于信息化的项目教学模式下的教师、学生的角色与地位。教学过程和教学评价较之与传统的教学模式的不同.提出基于信息化的项目教学模式是适合于高校培养创新型人才的教学模式。     

基于云计算视角下的高校信息化建设研究

信息化建设是我国高校建设的重要组成部分.为推动高校信息化建设,从实际出发,结合云计算的特点,提出基于云计算的高校信息化建设策略.实践证明,云计算在高等院校信息化建设中的应用能够加快我国高校教学改革和信息化建设的步伐,推动整个教育信息化建设的进程.     

基于改进BP网络的高校科研项目评价模型

针对高校科研项目评审立项中主观性强的问题,提出了基于改进BP网络的项目评价模型.首先对于传统BP算法,在权值初始化加入混沌序列,并对权值修正过程加权优化,使网络具有收敛快、精度高的优点.然后设计了合理的项目评价指标体系,并给出了具体评价步骤.通过实例仿真说明,提出的改进BP算法用于评价科研项目科学客观,简单实用,有广泛的应用价值.     

决策支持系统在深化高校教务信息化建设的探索与实践

在介绍高校信息化现状的基础上,从深化、改进、完善教务信息化建设角度出发,探讨了基于决策支持系统概念下开发高校教务智能分析系统过程中的工具、方法及展现方式.最后提出了深化高校教务信息化建设亟待解决的问题,这次实践也是数字化校园公共信息再利用的有益尝试.     

高校学生工作信息化的实践与思考

在信息科技日新月异发展的今天,教育信息化是国家教育发展的必然趋势,许多高校已然进入信息化进程。作为高校信息化管理的重要组成部分,高校学生工作的信息化不仅对当下高校教育管理发挥重要作用,也将在未来的教育信息化进程中起到深远的影响。基于此,本文综述了当前高校学生工作信息化的发展状况,指出了高校学生工作信息化的优势与不足,提出了高校学生工作信息化发展的思考与改进意见。     

教研项目管理信息系统的设计与应用

教学与科研的广泛结合,激发了高等学校教学研究的极大热情。在各种立项百花齐放的今天,高校项目管理工作面临新的挑战,如何实现项目管理工作信息化成为一个亟待解决的课题。结合高校教研项目管理特点,基于面向对象思想和数据库技术开发的项目管理信息系统,真正实现项目管理的信息化,有助于高校项目管理实现科学化、规范化、高效化。     

企业信息化项目投资效益分析

当前,掌握科学、合理的信息化投资效益分析方法对企业信息化建设具有重要的现实意义.该文初步分析了企业信息化项目的投资成本、运行成本与项目投入运行产生的收益之间的关系,提出了企业信息化项目投资的基本原则和思路.     

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