通信电路实验教学改革探索

为了提高学生对通信电路系统的综合设计与自主实验能力,开展了"以基础实验为引导、软件仿真为支撑、设计实验为主导"的教学内容改革;构建了以调频发射系统和电路仿真软件为基础的软硬件设计实验平台;探索了形成性评价与总结评价相结合的综合评价方式。从实验内容、实验实施、教学方法的改革等方面探讨了课程教学改革过程。实践表明,设计性实验与软件仿真相结合的开放实验模式提高了学生的实验积极性和综合能力,改善了教学效果。     

针对卓越工程师培养的课程实验测评模式探索

课程实验测评是课程实验教学实施的重要环节,其测评模式决定了学生对实践能力培养的重视程度和收获效果。针对电子科技大学软件工程专业实施卓越工程师教育培养计划项目,文中分析探讨课程实验测评模式对学生工程实践能力培养的影响。提出一种突出工程实践能力培养的课程实验测评模式,解决传统课程实验测评模式固有问题。结合数据库课程的学生实验测评,文中设计了课程实验测评方案、测评内容及其测评系统,用于评价学生课程实验的学习成效。通过数据库课程实验测评应用,学生在数据库设计、数据库应用开发、数据库产品应用等工程实践能力方面取得较大收获,培养了软件工程师的数据库基本能力。     

计算机网络实验教学探讨

针对非计算机工科专业计算机网络课程实验教学面临的问题,提出利用虚拟仿真软件与真实设备相结合形式构建虚实结合的计算机网络实验平台,并通过在课程修学前后,分层次规划设计认识实训、基础实验和综合实验任务,完善实验教学体系和考核评价机制,强化实验教学作用。教学实践表明:该模式可增强学生网络知识的综合运用和实际动手能力,提高计算机网络课程教学水平,促进应用型和创新型人才的培养。     

虚实结合的故障诊断课程教学改革与实践

根据"机械系统故障诊断"课程理论性和实践性要求高的特点及理论教学和实验教学脱节的现状,借助计算机仿真技术开发了课程适用的虚拟仿真软件,建设了虚实结合的课程教学模式。虚拟仿真软件既可以作为理论课教学的课件也可以作为单独的一项虚拟仿真实验,为理论教学和实验教学搭建了桥梁。同时增加了实物实验的设备台套数以保证实物实验的教学质量,实物实验采用基于项目的综合设计性实验模式,以提高学生综合实践能力为目的,经过几年的实践,该模式教学效果良好。     

创新推进近代物理综合性实验项目建设

结合近代物理实验课程的教学实践,总结了建设综合性实验项目的实验模式,包括综合性实验项目性质的界定、整合优化实验项目和实验内容及建立全程的多元化考核办法等重要方面。实践表明,建设综合性实验项目,能够培养学生的综合分析能力、实验动手能力、数据处理以及查阅资料的能力。     

环境辐射监测实验项目开发初探

环境辐射监测实验目的是帮助核工程与核技术专业本科生理解环境辐射监测与评价的课程教学内容,锻炼实际操作监测仪器的动手能力,提高学生分析问题与解决问题的能力,综合提高理论与实践相结合的全面素质。该文通过实践,利用自搭实验平台、课程设计与实验相结合和联合辐照中心进行实验等手段,解决了实验项目开发中存在的环境辐射监测实验仪器匮乏、实验项目和教学内容结合不紧密等问题,最终开发了环境辐射监测实验项目的主要内容,使得环境辐射监测与评价课程更具有实践意义。     

基于气动机械手控制的单流程控制实验教学设计——以《可编程控制器技术》课程为例

单流程控制实验是《可编程控制器技术》这门课程中很重要的一部分知识内容,本着以岗位需求为出发点,以学生的能力驱动为目的,本文将气动机械手的控制这一典型项目案例教学贯穿于本节课的内容和创新实践过程中。将理论与实践相结合,体现以学生为主体,教师为主导的理实一体化教学。通过由简入繁的课程知识体系,使学生构建自己的知识体系,逐步提升学生分析问题、解决问题的能力以及综合职业能力等,从而实现项目化课程的教学设计。     

研究型学习能力在化学教学中的培养

根据化学课程的特点,提出从转变教学模式、改变教师与学生在教学中的角色,教学内容与科研项目相结合．创新教学方法、设计综合实验等方面培养学生的研究型学习能力。设计综合实验使学生感到富有挑战性和创新性,在实践的过程中提高学生的研究型学习能力。     

对完善会计实践教学体系的探讨

完善会计实践教学体系,应从会计实践教学目标、会计实践教学内容、会计实践教学管理和会计实践教学条件等方面进行建设和完善。会计实践教学目标和会计实验课程体系的构建应以培养具有创新精神和实践能力的应用型人才为目标,体现循序渐进的认知规律。在实践教学内容上应包括单项模块实验、课程综合实验、专业综合实验、会计专业实习和创新研究实验,形成单项技能训练、专业综合能力训练和职业综合能力培养相结合,基础验证性实验项目、综合设计性实验项目和创新研究性实验项目相结合的多模块多层次的课程体系。     

基于小车倒立摆的《自动控制原理实验》教学实践

本文依托小车倒立摆系统开设了《自动控制原理实验》课程的系列设计性、综合性实验项目,通过改革实验教学方法提高有限实验学时的实验效果,通过建设复杂控制系统综合实验项目提高学生运用控制理论解决实际问题的能力,通过改革教学组织模式提高课程组实验教学整体水平,上述措施的综合运用有效提高了本课程的实验教学效果。     

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.     

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.     

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.     

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.     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that