新疆师范大学地理学综合野外实习课程构建——以地理信息科学专业为例

野外实践教学是自然地理人才培养重要环节。为增强学生学习的积极性和主动性,文章以地理信息科学综合野外实习为例,选择典型干旱区景观类型,综合设计生态学、地质地貌学、遥感概论等课程实习内容,制定实习任务、完成实习目标,设定考核方式,并通过学生实习汇报和感受,对实习效果进行总结归纳,进而探讨地理信息科学专业疆内野外综合实习模式、构建综合野外实习野外实习课程。为地理信息科学专业自然地理野外实习中全员全过程全方位育人以及为地理信息系统自然地理专业实习提供参考。     

庐山自然地理野外实习模式与内容的改革初探

自然地理野外实习是自然地理教学的重要环节。根据高师地理专业课程体系改革要求,考虑目前我校人力、财力、物力等实际情况,对传统的分阶段、分课程的野外实习模式进行变革,代之以符合实际并行之有效的路线综合实习模式。     

自然地理野外实习课程优化的思考

该文以罗浮山野外实习基地为例,探讨了影响自然地理野外实习的一些外在因素,并就学院自然地理野外实习课程改革的部分经验做了介绍。     

修订《九宫山自然地理野外实习指导手册》的探讨

高质量的实践教材是提高实践教学效果的前提条件．基于我院自然地理野外实习的教学实践,在总结野外实习教材修订的意义和必要性的基础上,具体分析了我院使用的《九宫山自然地理学野外实习指导手册》存在的问题,并提出了修订建议．分析表明：当前地理实践教学的课程与教材建设滞后,我院编写的自然地理野外实习指导手册存在着教育功能单一、内容结构简单、可操作性不强等问题．建议从突显自主学习功能、编排合理的内容结构、完善形态结构、开发实践教学GIS应用系统等方面对野外实习指导手册加以修订．通过对实习教材的修订与建设,提高我院实践教学的质量．     

区域地理野外实习的组织和实施——以胶济铁路沿线为例

做为师范院校地理专业的教师,除了平时的课堂教学,室内实验教学和带领学生进行教育实习工作外,另外一个基本而又重要的教学环节就是组织和实施地理的野外(户外)实习.包括一年级的综合自然地理野外实习和二年级的区域地理野外实习两部分.限于学校所处地理位置,仅以胶济铁路沿线的区域地理野外实习为例,说明区域地理野外实习的组织和实施.文中不当之处,还望各位老师指正.     

文山师专地理专业综合野外实习的优化研究

以提高地理综合野外实习水平和效果为目的,从实习的内容和要求出发,通过分析目前地理综合野外实习的经验和不足,提出了建立野外实习基地和调整综合野外实习路线、完善野外实习教学模式、建立野外实习成绩评价体系等优化方案.     

民族院校中专业野外实习教学模式的设计与实践

野外实习是生物科学、生态学专业实践教学中的重要环节,在巩固学生学校所学理论知识及培养和提高学生实际动手能力等方面具有重要意义.本文以在民族地区自然保护区野外实习的有益实践及获得的良好实习效果,提出生物科学、生态学专业开展研究与教学结合的野外实习教学模式.     

动物学野外实习教学改革的探讨

动物学野外实习是动物学教学的一个重要组成部分.野外实习的效果不仅直接影响动物学的整体教学质量,而且还是教师教学质量和学生学习效果的具体体现.本文着重从实习的准备阶段、实施阶段和整理阶段以及参与科研工作等几个方面探讨野外实习的教学改革,并提出了几点建议.     

植物学野外实习教学质量保障体系和运行机制

植物学野外实习是植物学实践性教学过程中的重要环节.本文从组织管理保障、安全保障、教学质量保障、运行机制和实施效果等方面对植物学野外实习进行总结,以期对促进地方高师院校植物学野外实践性教学提供参考.     

地理专业野外、社会实践教学初探

本文针对我校当前教育经费短缺的现状,提出地理专业自然地理教学实习应当立足于本地区建立野外实习基地,人文地理和区域管理学教学实习应当立足于本地区社会实践工作。     

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…     

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).     

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.     

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.