《电工电子学》实验教学模式改革

针对传统电工电子实训中心实验教学中存在的问题,结合目前各种先进的信息技术,从教学体系和教学方法两方面提出了关于该课程实验教学的改革和探索思路。其中教学体系改革主要包括强化实践教学、层次化实验教学模式、拓展实验内容、开放式实验教学等;实验教学方法包括充分发挥多媒体技术、网络虚拟化仿真实验、改革学生成绩评定方法等。实践证明,已实施的各种改革措施明显提高了教学效果。     

计算机实时测试与控制实验教学改革探讨

针对研究生课程"计算机实时测试与控制"教学存在的瓶颈问题,进行课程实验教学内容和方法的改革探讨,找到行之有效的方法,发挥出课程的"教-学-用"高效能功用,实现了课程的精品建设。具体实现方法一是从实验教学内容上进行改革,包括虚拟仿真实验、实际实验、课题相关实验与报告这三个方面。二是在实验教学方法上进行改革,体现在三个相结合和一个课程考核评价机制方面。将这种系统化、层次化的课程实验教学改革进行实践验证,证明其能有效培养学生学习本课程专业知识方面的创新能力、科研思维能力,明显提高学生的工程实践技能水平。     

开放数据库实验平台的研究与设计

结合数据库实验教学内容,对开放数据库实验平台的设计进行了讨论,包括开放数据库实验平台系统结构、系统功能设计、数据库规划和管理等方面内容。学生可以从校园网上的任意一台计算机远程登录开放数据库实验平台,完成数据库实验和课程设计。开放数据库实验平台从实验时间、地点和内容上对数据库实验进行了拓展,为学生提供了更为方便灵活的实验环境。     

以大型仪器为依托的高分子材料专业实验改革

大型仪器设备是体现高校办学实力和实验教学水平的重要标志,充分挖掘大型仪器教学功能,对培养创新型高素质人才具有重要作用。以大型仪器设备为依托,围绕实践教学系列课程的内容优化和有效衔接,从实验项目的内容及实验方法改革入手,拓展新的教学内容,丰富实验教学手段,以求改变原先一成不变的教学模式。通过该实验教学的改革,进一步拓展了本专业大型仪器设备的教学功能,强化了本科生在仪器操作及仪器应用方面的能力,提高了专业实验课程的水准和层次。     

改革电子电路实验教学 培养学生创新能力

实验教学是高职院校实践性教学的主要环节,对学生创新思维和创新能力的培养起着至关重要的作用。文章以电子电路分析与实践课程教学为例,介绍了实验教学在课程设置、实验教学内容、实验教学手段上进行的探索和创新。实践表明,实验教学探索与改革收到了良好的效果,提升了学生的学习兴趣,基础型实验有助于学生掌握基本实验技术和技能,而自主设计综合创新型实验则有利于对学生进行知识、能力与素质的综合培养。     

改造和研发教学仪器 推动化学实验教学改革

仪器是实验教学的重要工具,同济大学化学实验教学中心在课程建设中把教学仪器的改造也作为教学改革的一项重要内容。以物理化学实验课程为背景,结合诸多实际教学案例,介绍了现有教学仪器在设计理念上的缺陷、用于教学时所暴露出的问题,以及实验中心针对这些问题进行仪器改造的思路和方法,总结了新的仪器在丰富实验手段、拓展实验教学内容、提高教学效率、培养学生创新实践能力方面取得的成效。     

动物生物化学实验课程改革探索

针对当前以往教学中出现的问题,我们对动物生物化学实验课程进行了一些改革.主要包括:更新实验教学大纲、改进实验教学方法、提升教师自身素质、完善考试考核制度、开展学生技能竞赛等.经过改革,学生的学习积极性得以提高,创新能力和实践能力得以加强.     

面向新工科的两阶段探究式模拟电子技术实验教学实践

20世纪以来,电子科技飞速发展,模拟电子技术和数字电子技术在其发展中发挥着不可替代的作用。电子技术实验课程作为理论学习和工程实际的桥梁,受到工科电类相关专业的重视。面向新工科建设,采用适当的实验课程教学方法是提升该课程教学质量和教学成效的关键。针对模拟电子技术实验教学,通过分析和探讨实验教学现状和教学过程存在的短板,提出了两阶段探究式模拟电子技术实验教学方法,并有机结合现代化教学媒介和多元化实验平台,拓展实验教学内容,取得了较好的教学效果。     

“数据库原理”课程实验教学改革

实验教学是"数据库原理"课程教学过程不可缺少的环节,是培养学生动手实践和创新思维的重要手段。根据多年的教学经验和该课程特点,在当前课时不足、实验资源有限的条件下,对实验教学内容、实验教学模式以及实验考核机制等进行了改革,以加强学生对理论知识的理解和创新应用能力的培养。     

提高学生技能的动物学实验教学改革探究与实践

动物学是大学生物类各专业的基础课程,实验教学是其重要组成部分。本文介绍了近年来我们在动物学实验教学过程中进行的一些改革,包括让学生参与实验准备;整合实验教学内容;开设探索型实验;充分利用当地动物资源等,目的是提高实验教学效果,培养学生实验技能和综合素质。     

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.     

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.     

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.     

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.     

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.