"新工科"背景下"化工仿真实验"的开放性教学实践

随着教育信息化和仿真技术的飞速发展,基于仿真软件的虚拟仿真实验教学已成为高校化工实验教学发展的新趋势。本文在新工科理念的指导下,以丙烯酸甲酯工艺模拟实验教学为例,采用灵活开放的实验教学,学生摆脱了实验室、实验项目和实验时间的约束,独立完成实验,有利于培养学生的综合能力,充分调动学生主动性,提高实践教学的效果和水平。     

"传感器与检测技术"虚拟实验教学平台建设

针对本科院校课程"传感器与检测技术"实验教学过程中出现的实验条件有限和实验教学学时较少的问题,提出建设"传感器与检测技术"虚拟实验教学平台的方案,该平台中所设计的传感器虚拟仿真实验包括产品说明、零件展示、装配演示和实验测试等4个部分,以光敏电阻传感器为例对虚拟仿真实验过程进行了详细展示.该虚拟实验教学平台的建设可以弥补实际实验室的不足,学生可以随时随地进行实验操作.     

"三梯次"实验教学模式的研究与实践

结合光化图像处理方向的实验教学改革,按照人的认知、实践、创新和自我完善的过程,构建了"基础巩固性实验—专业自主性实验—综合创新性实验"的"三梯次"实验教学模式,指出这种教学模式能取得良好的教学效果。     

"一体化、三层次、多渠道、多模式"的化学实验教学改革

化学实验教学经过多年改革与实践，形成了在化学一级学科的平台上设置基础性实验、综合性实验和研究、创新型实验的“一体化、三层次”的实验教学新体系，探索了多层次、多途径、多模式的开放实验教学模式，加强了学生的实验基础，提高了动手能力，训练了分析问题和解决问题的综合能力，为新时期”创新型、研究型”人才的培养模式进行了有益的探索和实践。     

"模板实验"和"流程实验"在基础有机化学实验教学中的应用

讨论了设计性的"模板实验"和"流程实验"的形式及其在有机化学实验教学中的应用.     

基于"私有资源"开放性实验的设计

针对现有非计算机专业计算机基础课的实验现状,提出拓展实验教学的一种新思路——基于“私有资源”开放性实验设计方案,以弥补基于“公有资源”实验教学的不足。文章对该开放性实验的目的、内容、设计方案、实验步骤与考核进行了具体的介绍。     

四川大学"523实验室工程"--一项本科教学实验室建设的跨世纪宏伟工程

通过实施“523实验室工程”的建设,探索了一条如何把实验室建设与管理体制改革、实验教学改革(包括实验课程体系、实验内容、实验手段、实验教材等)紧密结合的有效途径。实践表明,“523实验室工程”全面推动了我校本科实验教学改革,提高了本科生实验教学质量。     

"金课"标准下消防燃烧学课程实验教学改革

在消防燃烧学课程建设过程中,对标"金课""两性一度"的标准,对实验教学环节进行了改革.通过引入综合性设计性实验、融入思政内容、树立安全观念等措施,提升课程实验的高阶性;通过对实验内容、实验手段和实验教学模式的创新,提升课程实验的创新性;通过改革课程考核方法、丰富教师角色,提升课程实验的挑战度.为培养具有综合能力和高级思...     

"材料分析与测试技术"实验课程教学优化路径探讨

"材料分析与测试技术"实验课程是高校无机非金属材料工程专业十分重要的核心课程之一.当下,高校在开展该课程实验教学时,往往存在实验教学结构组成不合理、实验教学模式固定、实验过程中学生动手较少以及实验考核评估模式不科学等较多问题.为了进一步提高"材料分析与测试技术"实验课程教学效果,强化学生的实践操作能力与创新能力,高校需...     

论化学实验中的"设计性"实验

实验教学是高等学校教学工作的重要组成部分,是培养合格人才的基本环节。该文阐明了设计性实验的内涵。通过分析设计性实验的特点,论述高等学校实验教学开展设计性实验的意义,讨论设计性实验的开展过程,总结开展“设计性实验”应注意的问题,提出教学计划内“设计性”实验与教学计划外“设计性”实验、开放实验室相结合。     

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