大学生社会实践活动实效性分析及评价体系设计

对大学生社会实践活动实效性进行评价研究,有利于引起教育工作者和社会对大学生社会实践教育的高度重视,提高大学生社会实践活动成效。通过成都大学学生社会实践活动实效性问卷调查,熟悉了大学生社会实践活动的开展情况和存在的问题;设计了基于CIPP模型的大学生社会实践活动实效性评价体系,并利用层次分析法完成了大学生社会实践活动实效性评价体系各级指标权重的定量分析,确定了大学生社会实践活动实效性的重要影响因素;从宣传、个人、学校和社会四个方面提出提高大学生社会实践活动实效性的针对性措施。基于CIPP模型的大学生社会实践活动评价体系可复制、易重构,具有非常好的应用和推广价值。     

以社会主义核心价值体系指导大学生社会实践活动

社会实践活动是大学生思想政治教育的重要环节,以社会主义核心价值体系指导大学生社会实践活动,有利于大学生正确把握社会实践活动目的、意义和作用,有利于大学生通过社会实践活动树立科学的世界观、人生观和价值观。     

大学生社会实践的辩证认知

大学生社会实践活动有助于增强高校思想政治理论课的实效性,同时社会实践活动是培养大学生成为创新型人才的需要,也是强化养成教育,促进大学生社会化的必要手段。但大学生社会实践对大学生产生正面影响的同时,也存在着一些负效应。辩证认知大学生社会实践活动,全面理性分析大学生社会实践活动的两面性,有助于大学生社会实践活动的正功能最大化,规避其负效应,从而推进大学生社会实践活动在广度和深度上的发展。     

浅谈新时期大学生社会实践长效机制的构建

社会实践是大学生思想政治教育的重要环节,在培养大学生成长成才过程中起着重要作用。本文分析了当代大学生社会实践所面临的现状和问题,提出了应从建立健全的社会实践活动管理体系、建立完善的社会实践活动保障体系、建立稳定的社会实践活动基地、建立专业化的社会实践内容、建立社会化的社会实践运作方式等五个方面,构建大学生社会实践长效机制。     

抓好社会实践活动阵地提升大学生德育教育水平

回顾大学生社会实践活动开展20年来的发展道路,通过对大学生社会实践活动德育功能的分析,提出开展大学生社会实践活动是加强大学生德育教育的重要途径,从而,提出了如何深入开展大学生社会实践活动的几点认识。     

浅谈组织大学生社会实践活动要遵循的原则

组织大学生参加社会实践是高校育人活动的一个重要环节,大学生社会实践在人才培养过程中有着重要功能,组织大学生社会实践活动,要遵循一些原则,以便更有效地发挥大学生社会实践活动的育人功能。     

人际交往能力在大学生社会实践活动中的应用

大学生社会实践活动是提高人际交往能力的重要途径,良好的人际交往能力是大学生社会实践取得成功的重要保障。本文介绍了大学生人际交往能力的构成和大学生社会实践的含义及其类型,并从目前高校大学生的社会实践活动着手,结合课题研究中“创立模拟公司”的活动．总结出了人际交往能力在大学生社会实践活动中应用的几点启示。     

浅谈社会实践活动对培养大学生综合素质的作用

社会实践是培养大学生综合素质的重要平台,是大学生进入社会、认识社会、融入社会的重要途径。随着社会的发展,大学生社会实践活动的主题、内容和形式等也会不断发生变化,对此,就需要提出相应的对策,来使大学生社会实践活动适应社会的发展,同时能让更多的大学生通过社会实践提升自身综合素质。     

问题与对策——从环境的角度看大学生社会实践建设

大学生社会实践活动需要一定的空间条件和环境因素,这使得社会实践基地成为实践活动能够深入开展的重要条件。当前的大学生社会实践活动正在朝着制度化、规范化的方向发展,如何使实践活动能够呈现可持续发展的良好态势,建设良性的社会实践基地极其重要。文章初步探讨了目前我国大学生社会实践基地建设中暴露出来的几种问题,期望得到学校、社会和个人的共同关注和努力。     

关于加强和改进大学生社会实践活动的几点思考

本文通过高校组织大学生参加社会实践活动,充分发挥了大学生的自主能动性,突出了当代大学生“自我管理、自我教育、自我服务”的三自功能和服务社会相结合的社会实践活动特点,为学生长期进行社会实践活动打下了坚实的基础,保证了社会实践育人目标的实现。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

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.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the