民族高校“计算机文化基础”课程教学探究

本文分析了当前民族高校计算机基础教育存在的主要问题,结合我校"计算机文化基础"课程建设,提出从教学理念、教学方法与手段、教学内容、实践教学、考核方式和网络教学平台建设等方面进行课程改革探究.     

计算机网络工程专业《电子技术基础》课程改革与实践

在教育部质量工程背景下,随着电子技术的发展,国内各院校近年来对电子技术基础课程教学都进行了改革的特点,我校计算机网络工程专业遇到了学时少、课程内容多的情况下,<电路原理>、<模拟电子技术>、<数字电路>等课程如何教学的问题;本文提出了结合教学改革与质量工程项目,改革我校计算机网络工程专业<电子技术>课程建设的建议及实践方法.     

《计算机文化基础》课程教学改革的研究与实践

随着我国计算机基础教育的普及,在高等学校中如何讲授计算机文化基础课程越来越多的受到大家的关注。本文主要介绍了我校在计算机文化基础课教学中,所进行的教学改革的研究与实践。     

关于我校文科计算机基础教育教学模式的改革研究

本文主要从我校目前非计算机专业的计算机基础教育现状出发,结合计算机教育的发展趋势及社会需求,对我校非计算机专业的计算机基础课程的教学模式进行了探讨.     

高校计算机课程考核方法改革的实践与思考

随着社会信息化程度的提高以及计算机的普及,各领域的工作对计算机技术的依赖越来越强。高校学生对计算机知识的渴望与需求越来越多。而高校中除了计算机专业课程以外,在非计算机专业的学生中也普遍开展了以培养学生的计算机应用能力为目标的计算机基础课程。计算机课程有着重操作、重实践等特殊的学科性质,如何设置计算机课程的考核方式是能否以考试结果公平有效的检验学生学习情况的一个重要问题,本文就我校在计算机课程改革中在考核方式上进行的一系列改革内容的实践展开思考。     

提高计算机基础教学质量的几点思考

为提高计算机基础教学质量,应根据我校高职教育特点,形成计算机基础课程体系特色,优化学生知识结构、能力结构。建设一支稳定的、计算机水平较高的师资队伍是保证计算机基础教学的关键。教师应根据本课程特点,着重培养学生求异思维能力,采用现代化教学手段,开展计算机辅助教学。同时,要处理好理论教学与上机实践的关系。     

基于专业导向的计算机基础网络化教学模式探讨

分析了我校非计算机专业计算机基础课程教学中存在的问题,提出一种基于专业导向的网络化教学模式作为课堂教学的补充,该模式充分考虑了不同专业学生对计算机知识的不同需求,提供了丰富的专业化学习资源,使学生的自主学习和师生交互式教学得以真正统一,为我校计算机基础课程的教学改革提供了思路．     

《计算机电路基础》课程教学改革探索

本文通过简要分析《计算机电路基础》课程教学的现状,指出我校该课程在教学观念、教学内容、教学方法等方面存在的主要问题,结合学校的教学改革工作,从四个方面提出了《计算机电路基础》课程改革的设想。     

如何提高学生计算机课程上机创新能力的研究

本文从提高学生上机创新能力的角度来探讨计算机类课程的实践教学考核改革环节。研究内容将具体结合我校计算机上机教学改革实践的调查和分析,提出了以强化实践操作考核,提高学生计算机课程的上机应用能力和创新能力为目标的计算机专业课程考核改革的设想。     

《计算机电路基础》课程教学改革探索

本文通过简要分析《计算机电路基础》课程教学的现状，指出我校该课程在教学观念、教学内容、教学方法等方面存在的主要问题，结合学校的教学改革工作，从四个方面提出了《计算机电路基础》课程改革的设想。     

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