浅谈高等院校多媒体教室及其教学设备的管理和维护

随着多媒体技术的迅速发展,多媒体教学是现如今教育教学改革的发展趋势。多媒体教室成为多媒体教学的基础设施和重要组成部分,已经广泛应用到高等院校的课堂教学中。本文通过分析多媒体教室使用中常见的问题,相应指出多媒体教室维护与管理的具体措施。     

多媒体教室的音响设计及声缺陷的调校

对多媒体教室的声学指标、音响设计以及器材配置要求进行了分析 ,并对多媒体教室常见的声缺陷问题提出了调校的建议和解决方法     

多媒体教室的音响设计及声缺陷的调校

对多媒体教室的声学指标、音响设计以及器材配置要求进行了分析，并对多媒体教室常见的声缺陷问题提出了调校的建议和解决方法。     

浅谈高校多媒体教室扩音设备的使用

随着现代教育改革的推进、各种扩音设备在现代高校多媒体教室中的普遍应用,扩音设备的使用和维护逐渐成为高校电教部门的重要任务。笔者根据多年从事高校多媒体教室维护的经验,结合几种较为常见的多媒体教室扩音设备,如FM调频无线麦克风、移频增音等,借此与读者共同探讨并寻找在实践中证明较为实用的教学扩音方案及其配置参数。     

多媒体教室的桌面虚拟化探索

如何有效管理多媒体教室已经成为各高校面临的一个难题.通过分析多媒体教室的计算机系统维护问题和桌面虚拟的技术特点,在合理利用已有的多媒体教室资源基础上,提出了多媒体教室的桌面虚拟化方案,为多媒体教室的管理带来便利.     

云终端在学校多媒体教学的应用

针对目前校园多媒体教室的现状,调研分析了现有多媒体教室存在的不足,并探讨基于云终端技术改造现有多媒体教室,足校园多媒体教室的易维护性和安全性需求。     

多媒体教室的声学环境分析及设计

多媒体教室是学校现代化教学的重要场所之一,根据目前学校多媒体教室建设和改造的实际情况,分析了多媒体教室的声学环境和多媒体教室在建设和改造中出现的主要声学问题,提出了多媒体教室声学环境优化设计的方法和思路.     

多媒体教室与校园网的协同发展

高校对多媒体应用的日益重视、校园网的普及和不断发展,给多媒体教室建设、管理和使用带来了新的生机,多媒体教室与校园网的协同发展,使得多媒体教室的网络化集中管理成为可能,也为多媒体教室在使用和功能上增添了新的内涵.     

高校多媒体教室的规划及建设探讨

多媒体教室是运用现代教育技术手段进行教学活动的重要场所,是学校实现多媒体教学的平台.随着各高校多媒体教室数量的不断增加,随之暴露出因建设引起的使用和管理问题也越来越突出,多媒体教室建设的好坏,直接影响到今后多媒体教室的教学使用和维护管理.科学规划多媒体教室需从多媒体教室的建设原则、环境建设、设备配置和建设施工等方面进行探讨.     

多媒体电教教室的设计与建设

多媒体教室是实现多媒体教学的主要平台,在学校中将逐步得到普及.介绍了多媒体教室的组成及功能特点,着重论述了多媒体教室的建设目标,多媒体设备的选择及建设多媒体教室时应注意的几个关键问题.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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.     

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.     

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。     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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

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