案例教学中对话形式的研究

案例教学作为新课程实施过程中诞生的现代教学方法，实质是现代教育思想在教学改革中的反映。其主旨是把弘扬人的主体性作为教学过程的全部核心，把尊重与发挥教师和学生这两个交互主体的能动性与积极性作为整个教学过程的中心点和支持源。因而它对解放学生个性，培养学生的创新精神有着重要的促进作用，对促进教师的专业成长和自我实现也有着十分重要的意义。案例教学中的对话形式是在这种新课程理念指导下现代社会民主化、个性化精神在教学中的回声，它的基本内涵是在师生关系民主、平等的前提下，通过师生交流，促成实现以人为目的的教学。案例教学中对话的表现形式可以是多样的，但归纳起来主要有学生与文本的对话、学生与教师的对话和学生与学生的对话三种形式。     

阅读对话教学的问题及其解决

在当前语文教学中，“热烈对话”成为教师教学的追求目标，然而，透过“热烈对话”的层面进行冷静地思考，我们会发现，阅读对话教学中的“热烈对话”还有着许多“问题”，它并不是真正的、有效的对话。本文针对当前阅读对话教学存在的问题及如何进行有效的教学对话，展开论述。     

阅读教学中的有效对话

《语文课程标准》在教学建议中明确提出：“阅读教学是学生、教师、文本之间的对话的过程。”这就要求我们确立新的阅读教学过程观，即变“传话”教学为“对话”教学。“传话”与“对话”虽一字之差，却反映了教学观念的转变。通过“对话”式教学，把学生从被动状态中解放出来，让他们真正成为学习的主人。同时，学生通过与文本对话、与老师对话、与学生对话，不仅习得了知识，而且张扬了个性，     

走向"对话"的思想政治教学

从后现代视角阐释对话及对话教学，以及探讨思想政治对话教学的特征及理论基础，提出了创设对话情景、设计对话与选择内容、角色扮演等思想政治对话教学的几点设想。     

教师专业发展:重塑新的教学观--民族地区乡镇中小学教师教学观念调查

调查显示，新课程实施后，民族地区乡镇中小学教师的教学观念发生了明显的变化。教师在新课程理念指导下，关注师生的平等对话与交流，关注学生的个性成长，实现师生角色的重塑，从而构建起一种新的教学观。同时，面对新课程，教师也感到了压力和挑战，迫使教师不断提升专业素养，转变教学观念，促进自身的专业发展。     

语文课的对话情境初探

语文教学的本质是对话教学，而民主、平等是对话教学的第一法则。对话精神的实质可以通过语文课堂来落实，在语文对话教学中，教师要建立新型的师生关系，当好学生学习的组织者、指导者。     

创设环境 展开对话——关于语文阅读对话式教学的一点思考

在新课程教学理念的指导下，为改变传统灌输式的教学模式，开展对话式教学成了转变教学方法的主要途径之一。对话式教学，顾名思义，就是要把教学的目标和任务在教师与学生的对话或者学生与学生的对话中完成。在具体的教学实践中，对话式教学往往很难开展下去，或者仅仅是师生问答的形式而流于表面。对启迪学生多角度深层次地思考问题的能力的培养很难发挥明显作用。笔者在开展对话式教学的过程中也遇到了一些这样那样的困惑。如：学生无话可说，当然就谈不上对话了；     

利用多重对话机制 实现文本创意解读

文本意义是作者赋意、文本传意和读者释意的复合共生体，是作者、文本、读者多维对话的产物。而语文教学的对话状态更是一个复杂的组合体，包括师本对话、生本对话、生生对话、师生对话等等。每一种对话都会碰撞出创新思维的火花，都会赋予文本新的意义。我们应允分利用这种丰富的对话机制，努力使教学充满创意、生机勃勃。这里，仅从教师角度谈谈如何在与作者、学生、同伴的多重对话巾努力丰富、创新文本，为创意教学打下坚实基础。[第一段]     

对话论对大学英语口语教学的启示

本文总结了多年来比较有代表性的对话理论研究成果，结合实际就如何改进英语口语课堂教学进行了探讨。本文提出实行对话教学的口语课堂应体现平等性、交互性和创新性的特点，教师在对话教学中应充当组织者、对话者和启发者的多重角色，教学评价方式也应有所改变。     

Seminar与公安院校学生科研能力培养

Seminar教学特别强调实践、反思、合作及对话在学习过程中的重要性，这就为学习者在课堂中获得具体行为和特定组织管理的知识提供了特定的机遇和条件。将Seminar引入公安院校的教学活动中，实现公安专业教学和科研的统一，强调以公安专业技术应用能力培养为主线，注重基本技能训练、专业技能训练和综合实践技能训练，做到以教学组织的民主性培养学生的创新能力及合作精神。更好地为公安院校学生提供根据科学的标准和方法最佳地获得知识，并按照这种方式独立、主动和负责地研究一个课题的有效途径。     

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).     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.