数学多媒体CAI制作平台的开发

介绍了一个基于PowerPoint环境的数学多媒体积件式课件制作平台的开发.本系统旨在给数学教师提供一个简单方便、不需程序设计的积件式多媒体CAI课件制作工具,使用者只需在各库中录入相应内容就可形成一个完整的积件式课件.文章分析了开发平台系统的必要性,主要阐述了所开发系统的功能及设计原理.     

基于 Flash 的积件技术研究

传统的多媒体课件由于教学策略、内容、结构和表现形式比较固定，一旦制作完毕不易修改，不利于教学。为此，研究了积件式 CAI 教学模式，探讨了用 Flash 实现积件组合的3种方法：多项选取列表、运用 XML 生成动态菜单和运用积件组合平台生成课件。实践证明，运用积件组合平台组合积件并生成 CAI 课件的方法最便捷、最有效。     

基于Web的多媒体教学课件的应用研究

基于Web的多媒体CAI课件是传统的多媒体CAI课件理论与Web技术的结合,开发简单,应用方便,已成为网络教学多媒体CAI课件的重要形式.本文介绍了基于Web的多媒体CAI课件开发过程,课件页面进行页面优化的原则和方法,并详细介绍了课件中导航、查询、测试等关键功能的JavaScript程序实现技术和方法.     

工程制图CAI课件的开发与设计

首先研究工程制图CAI课件的现状与发展趋势,然后重点结合开发与设计工程制图CAI课件的实践与经验,探讨工程制图CAI系统模型的建立、技术实现,接着叙述了利用功能分析的方法建立CAI课件的开发系统,并运用讲述的方法和VB、AutoCAD、3dsMAX等软件及技术建立CAI课件的开发系统,开发了工程制图CAI课件。所研究的方法具有较强的实用性。     

利用超媒体积件创作系统HIAS制作开放性CAI课件

由于利用多媒体创作工具或开发环境制作的CAI课件之固定性、整体性和封闭性,致使课件的应用受到局限.通过简要阐述网络超媒体积件创作系统HIAS的功能、特点及其实践,说明了应用该平台创作CAI课件的开放性之优势所在.     

基于Web的《微机原理》多媒体课件设计

基于Web的多媒体CAI课件是多媒体CAI课件与Web技术的结合,它将成为网络教学多媒体CAI课件的主要形式.本文针对多媒体技术与Web技术相结合的特点,介绍了在基于Web的多媒体CAI课件开发过程中对课件页面进行优化的原则和方法,并介绍了课件中导航、查询、测试等关键功能利用实现的技术和方法.     

积件理论与数学CAI软件发展

探讨了数学CAI软件发展的新思路，提出了以不变应万变、以灵活组合微教学单元和多媒体素材为基础的数学积件理论，给出了数学CAI积件系统结构模型，并与传统课件相比较指出积件理论是课件理论的进一步发展。     

高校计算机辅助教学改革初探

分析了当前计算机辅助教学（CAI）存在的主要问题，提出了改变CAI教学软件的开发模式、将CAI教学软件的开发由“课件”转移到“积件”，积极稳步地推进CAI教师培训，深入探索CAI教育理论等计算机辅助教学改革的思路。     

基于Web的多媒体CAI课件开发过程中若干问题的实践研究

基于Web的多媒体CAI课件是多媒体CAI课件与Web技术的结合．将成为网络教学多媒体CAI课件的主要形式．本文结合实例,介绍了在基于Web的多媒体CAI课件开发过程中对课件页面进行页面优化的原则和方法,并介绍了课件中导航、查询、测试等关键功能的JavaScript程序实现技术和方法．     

基于Web的《微机原理》多媒体课件设计

基于Web的多媒体CAI课件是多媒体CAI课件与Web技术的结合,它将成为网络教学多媒体CAI课件的主要形式。本文针对多媒体技术与Web技术相结合的特点,介绍了在基于Web的多媒体CAI课件开发过程中对课件页面进行优化的原则和方法,并介绍了课件中导航、查询、测试等关键功能利用实现的技术和方法。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.