高校公共体育教学质量下降成因及对策

为全面剖析影响高校公共体育课教学质量下降原因,借助教学要素理论,采用文献资料法、系统分析法等对大学公共体育课程教学中存在的主要问题进行深入分析,结果显示:大学公共体育教学质量下降成因主要包括:高校招生规模扩大,学生主体能动性不足;体育教学目标预设与达成度偏离;体育课程低位的弱势;体育教学方法不能适应新时期高校体育的发展;体育教学的内外环境受到破坏;体育教学效果反馈不够理想;教学中体育教师教学主导性失衡.并提出遏制大学公共体育教学质量下滑的策略.     

高校公共体育新开课程的设置与思考——以淮阴师范学院为例

随着终身体育和人文体育的体育教育观念不断刷新着人们对教育、体育和健康的认识,高校体育课程建设成为落实新的教育和体育观念的重要途径,而大学公共体育课程设置在其中占有举足轻重的作用。该文以淮阴师范学院大学公共体育课程教学中的创新实践为例,阐述高校公共体育课程模式的创新,及其具体开设方法和取得的成果,以期为大学公共体育课的模式创新提供参考。     

用多元智能理论探讨我国大学公共体育教学评价体系改革

美国哈佛大学心理学家加德纳的多元智能理论是一种全新的有关人类智能结构的理论，其评价观对新一轮大学公共体育教学评价的改革具有诸多积极的影响作用。本文借鉴并运用多元智能理论于大学公共体育教学评价改革，对于重新建构高校体育教学评价体系，更好地实施《指导纲要》具有重要的借鉴意义和参考价值。     

大学公共体育课四大教学模块浅析

公共体育课是大学教育的一个组成部分。本文总结了长春师范学院公共体育课程的改革成果,第一次提出四大教学模块的理论,从不同层面探讨公共体育课程内容设置的方法和理念。     

对我院公共体育课程教学改革的初探

如何构建大学公共体育的本科教学体系,是我院教学所面临的一个不容回避的课题.本文从教学的指导思想,开设专项课,加强理论学时,统一考核标准,完善课外体育等方面进行探讨,以期为我院公共体育的发展提供参考.     

论高校公体课教学中存在的问题

大学生体育能力水平,集中反映了大学公共体育课的教学质量。在高校体育教学中,体育教学是实现学校体育的目的任务的基本途径,其实施过程与效果与多种因素相关。从获得最佳教学效果出发,通过对体育教学及其过程的认识和理解,客观地分析并确定其基本构成因素,掌握它们的性质和职能,从根本上增强公共体育课教学过程的整体效应,提高公共体育课的教学质量,提高每个大学生的素质和能力,适应现代社会进步的需要。     

对我院公共体育课程教学改革的初探

如何构建大学公共体育的本科教学体系，是我院教学所面临的一个不容回避的课题．本文从教学的指导思想，开设专项课，加强理论学时，统一考核标准，完善课外体育等方面进行探讨，以期为我院公共体育的发展提供参考。     

高校体育教学现代化教学研究

社会和时代的发展迫使大学教育走向现代化,作为教育重要组成部分的大学体育也必将实行现代化。本文采用文献资料法、专家访谈法、问卷调查法、逻辑分析法,对东北师范大学、长春师范大学、吉林大学公共体育教学现代化教学进行研究,指出了当前高校体育教学现代化教学存在的不足,并提出了一些合理建议,希望为促进高校体育教学现代化的发展提供一些参考。     

将拓展训练引进大学公共体育课的思考

在对拓展训练的起源与现状及大学公共体育课中开展拓展训练的意义进行分析的基础上,提出高校公共体育课中创设条件、设置情景使体育教学与拓展训练有机的结合起来,是终身体育和快乐体育的呼唤.     

对“扩招”后大学体育课程改革的探讨——漳州师范学院大学体育课程改革实践研究

采用文献、分析、归纳和综述等方法,以漳州师范学院大学体育课程改革的实践研究为例,探讨部分二本院校在扩招的严峻形势下如何进行大学体育课程改革,提出大学体育要增加项目设置;部分项目采用分层教学;增加体育理论课的比重;教学时间延伸;加强对教师的开发和利用;打破传统的大学体育学分获得模式,与运动项目协会、项目俱乐部相结合,与民族传统体育项目相结合,把体育理论公共选修课也纳入大学体育学分范围之内等大学体育课程改革策略,以期缓解大学扩招给体育课程教学带来的压力.     

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.