贵州少数民族高职学生学习适应现状的调查研究

采用学习适应量表对贵州省1851名少数民族高职学生进行调查。结果显示:贵州少数民族高职学生学习适应总体发展水平并不理想,学习适应各因子发展不均衡;男生在教学模式、学习态度、环境因素和学习适应性总分得分上显著高于女生;二年级学生在学习适应各维度得分上均显著高于一年级学生;理科生在教学模式和学习态度得分上显著高于文科生;城市学生在学习态度得分上显著高于农村学生;独生子女与非独生子女在学习动机、教学模式、学习态度和学习适应性总分存在显著差异,且独生子女的得分均高于非独生子女。     

学生自尊水平与学习态度和成绩的相关研究

目的探讨小学生自尊水平与学习态度和成绩的相关。方法采用《儿童自尊量表》和《中小学生学习态度自陈量表》,对山西省某小学校的200名小学生进行调查研究。结果 (1)不同年级的学生在学习态度上存在显著差异(F=1.229,P<0.01),在自尊上差异不显著(F=2.514,P>0.05);(2)小学生的自尊水平(T=0.665,P>0.05)、学习态度水平(T=1.041,P>0.05)在性别上的差异均不显著;(3)小学生的自尊与学习态度呈显著正相关(r=0.201,P<0.01);(4)小学生的自尊水平与学习成绩之间相关显著(r=0.320,P<0.01);(5)小学生的学习态度与成绩之间正相关显著(r=0.376,P<0.01);(6)小学生自尊可以解释学习态度的3.3%、学习成绩的9.6%。结论 (1)小学高年级和低年级学生自尊水平都很高,但高年级学生比低年级学生学习态度更端正;(2)男孩、女孩在小学时期自尊水平和学习态度上都没有区别;(3)小学生的自尊与学习态度有很大的关系;(4)小学生的自尊水平与学习成绩有很大的关系;(5)小学生的学习态度会影响到学习成绩;(6)小学生自尊心是影响学习态度和成绩的重要因素。     

学生数学学习态度量表的编制

通过文献法和问卷调查法研究高中生数学学习态度量表的编制.量表的设计经过初始模型的建立、专家意见征询和预调研得到正式调查问卷.正式调查后根据因子分析结果修改,得出数学学习态度量表的最终模型,共有情感成分、认知成分和行为成分三大维度共24个题项.因子分析结果表明,3个维度解释了总体方差的67.023%,各因子负荷量在0.513～0.784之间,表明本量表具有较好的结构效度.     

高校统招生与自考生学习态度对比及对策研究

学习态度是学习者对学习活动的基本看法及其言行表现,学习态度如何,对学习活动能否顺利开展以及能否取得良好的学习成绩至关重要。目前,高等教育阶段的统招生和自考生在学习态度上表现出较大的心理差异。为了解这两类学生在学习认知、学习情感和学习行为上的区别,采用大学生学习态度问卷对某高校统招生和自考生各200人进行问卷调查,结果发现,统招生在学习态度和学习行为两方面因素上存在明显优势;两类学生在学习情感上没有显著差异,自考生在学习认知上有显著优势。要提高教育教学质量应从学校教育、教师教学和学生个人三方面采取措施。     

基于学习通课程的学生网络学习行为研究

针对超星学习通课程学习过程中学生出现的被动学习、消极学习现象,提出分析学生学习态度的方法,构建学习态度跟踪模型.首先针对超星学习通平台收集的学生网络学习行为数据,选取与学习态度相关性较高的指标,形成训练数据集;然后,通过调查法对学生学习态度进行调查,以此获得学习态度标签;最后,基于分类算法构建学习态度跟踪模型,采用五折交叉验证方式进行实验.实验对比了不同分类算法的预测准确率,当采用Ada-Boost(Adaptive Boosting)算法作为学生态度积极性分类算法时,可较为精准地预测学生的学习态度.实验结果表明,构建的学习态度跟踪模型具备一定的学习态度分析能力.     

大学生体育学习心理健康评价研究

采用网络调查、文献回顾和访谈等方法收集问卷条目,通过探索性因素分析和验证性因素分析程序来构建量表,采用结构方程典型相关研究的方法考察了情意表现与合作精神各维度因素与体育学习态度、锻炼态度的内在关系。结果:331名被试的探索性因素分析表明高校学生体育学习心理健康量表是由课堂表现、自主学习、探究学习等9个因子构成;三个X组典型变量分别可解释三个Y组变量典型因素总变异量的84.1%、45.7%、41.4%,均在0.001水平上显著。     

怎样学习初一年级数学

教学的成败,很大程度上取决于学生的学习态度和学习方法。长期以来,对教师教学的要求强调领会教学大纲、驾驭教材较多,因此教师钻研教材多,研究教法多,而研究学生思维活动较少,因而选择适合     

免费教育师范生学习适应与学习倦怠的关系研究:基于优势分析的视角

以494名免费教育师范生为被试,采用大学生学习适应量表和青少年学习倦怠量表评定其学习适应和学习倦怠,应用分层回归和优势分析考察学习适应与学习倦怠的关系。结果显示:男女生在教学模式,学习能力,学习态度,环境因素和学业疏离上得分存在显著差异;在学习态度和低成就感上得分存在年级差异;学习适应各维度与学习倦怠各因子均呈显著负相关。层次回归分析显示:控制人口学变量后,学习适应与学习倦怠关系密切。进一步的优势分析表明:学习适应不同维度对学习倦怠不同方面存在影响不同。其中预测身心耗竭时,教学模式相对来说更重要,贡献了已解释方差的36.72%;预测学业疏离时,学习态度相对来说更重要,贡献了已解释方差的38.03%;预测低成就感时,学习动机相对来说更重要,贡献了已解释方差的58.78%。     

大学生应对方式与学习适应性的关系研究

本研究的目的是考察大学生的应对方式与学习适应性之间的关系。采用整群抽样法,使用简易应对方式量表和大学生学习适应性量表,对河南省3所高校的500名学生进行调查。调查结果显示:大学生在应对方式上以积极应对为主,在学习适应性上总体适应性良好,对学习动机、教学模式、教学能力三个维度的适应性较好,但对学习态度和环境因素两个维度的适应性较差。积极应对方式和高适应性显著正相关,消极应对方式和低适应性显著负相关。由此得出结论:大学生的应对方式对学习适应性及其各个维度都有预测力,可以采用积极应对方式来提高大学生的学习适应能力。     

简化解析几何运算的途径

根据解析几何题的实际情况，提出了几条简化解析几何题的运算途径，使学生在具体解题时可减少计算量，提高效率，培养学生的分析问题、选择最佳方法解决问题的能力．     

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.     

A computer generator for randomly layered structures

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

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.     

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。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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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     

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