兰州市中小学学生体质状况分析

以兰州学生《学生体质健康标准》测试统计数据为依据,采用文献资料法、数理统计法、比较法对身体形态、身体机能、身体素质等指标与"教育部学生体质健康设计标准(设计比例)"和上海学生体质检测结果进行对照分析研究,试图找出影响兰州学生体质状况下降的原因,并结合本地实际情况,提出相应对策,为体育工作和体育教学改革提供参考依据。     

高等院校大学生的生活习惯与健康体质研究

运用问卷法、访谈法等对衡阳师范学院学生的生活习惯以及学生对健康体质的理解等方面的实际情况进行调查和研究,以《学生体质健康标准》为依据,测试身体形态、身体机能和身体素质三个方面的数据,建立数学模型,探寻能够使大学生健康成长的有效途径和方法。     

对大学生体质健康自我评价方法的研究

根据学生身体形态、机能和素质中各项指标的测试及问卷调查，对学生在体质健康及健康意识方面的情况有了进一步了解。并查阅了有关资料，从而在此基础上提出学生体质健康自我评价的方法，为学生在体质健康方面提供一个自我评价的参考依据。     

奎屯市中学生与全国同龄学生身体形态指标比较分析

运用体质测定法、对比分析法、数理统计法,选取奎屯市13～18岁中学生为研究对象,根据本地学生体质调研统计数据,对奎屯市中学生与全国同龄学生身体形态指标进行对比分析,掌握奎屯市中学生身体形态的发展动态,研究中学生身体形态的变化趋势,进而分析得出影响奎屯市中学生身体形态的各种因素,能够为相关部门的决策提供依据,促进学生体质健康水平的提高.     

我校学生体质健康状况与对策研究

本文以安徽建筑工业学院在校学生为研究对象,以《学生体质健康标准》测试统计数据为依据,采用文献资料法、实验法、数理统计法,围绕身体形态、身体机能、身体素质等指标进行统计分析研究。以求找出我校学生体质健康状况存在的问题。并结合实际情况,提出有针对性的建议,为我校及其他相关高校体育教学和课程改革提供可参考依据。     

对首都师范大学本科学生2007～2008学年度实施《国家学生体质健康标准》结果统计与分析

主要是通过对2007～2008年度首都师范大学学生健康体质测试的统计数据,对学生的身体形态、机能和素质进行数理统计与比较分析,以求对我校学生体质健康测试及现状,存在的主要问题,提出针对性的分析与建议,为学校提供体质测试的原始统计数据,以达到学校领导和师生了解奉学年度全校本科学生健康体质的基本情况,为进一步贯彻"健康第一"教育思想,实施教育部、国家体育总局制定的<国家学生体质健康标准>提供可参考的依据.     

高校不同体育选项课对大学生体质健康状况的影响

目的:了解不同体育选项课学生的体质健康状况,为公共体育教学改革提供参考依据.方法:采用体质测试法和数理统计法,对660名大学生体质健康测试数据进行分析.结果:不同体育选项学生在身体形态方面发展状态良好;不同体育选项学生在身体机能方面具有显著性差异;不同体育选项学生在身体素质方面受教学内容的影响较大.结论:不同体育选项课应根据大学生体质健康测试标准进行相应的改变,促进大学生身体体质全面健康发展.     

不同专业大学生体质健康状况比较分析

采用测试法、文献资料法、数理统计法对绵阳师范学院非体育专业大学生体质健康测试数据进行整理统计分析,并对不同专业学生体质健康状况进行对比.结果表明:不同专业学生的身体形态、身体机能、身体素质有一定差异.建议:公共体育课教师应了解学生体质健康的特征,针对不同专业学生体质健康的弱势采取干预措施,加强课外体育活动的组织和指导,确保学生在有限的体育锻炼时间中提高其体质健康水平.     

高职院校学生体质现状和影响因素分析

目的探讨高职院校学生体质健康所面临的问题和原因,为改善高职学生体质健康状况提出建议。方法对安庆地区3所高职院校学生进行体质健康测试,通过比较分析法、数理统计法,进行研究统计。结果学生体质的整体状况不容乐观。结论 (1)从测试整体情况分析,男生的身体素质比女生差;(2)具体身体素质指标,学生的立定跳远成绩最佳,而学生的身体机能指标和耐力素质较差。     

大理学院学生体质健康状况调查研究

以大理学院12926名在校学生为调查对象,从身体形态、身体机能和身体素质3个方面研究该校学生体质健康现状及存在的问题,分析大理学院不同校区间学生的体质健康状况,为制定大学生体质健康的干预措施提供理论依据。本研究采用独立样本t检验、方差分析和LSD检验等方法分析数据。结果显示该校4个年级学生的身体形态指标均数都在正常范围内;各年级学生的肺活量指标低于全国大学生平均水平;男、女生的身体素质指标有较大差别,不同校区间学生的身体素质差别也较大。大理学院学生体质健康状况不容乐观,身体机能和身体素质有待提高,学校、家庭和社会均应加大对体质健康的关注,并采取切实可行的措施。     

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)

正~~     

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.