浅谈电子类专业本科生科研能力的培养

电子类专业本科生具备初步的科研能力是自身和社会的需要.本文根据实际情况,提出了循序渐进法、兴趣激励法和知识传承法等科研能力的培养方法,通过指导学生参与项目、竞赛和毕业论文等途径,增强学生的动手和创新能力,从而实现本科生科研能力的提升.     

构建培养本科生科研能力的实践教学体系探索

本文分析了我校目前已有的主要实践类课程对于本科生培养科研能力所起的不同作用,包括工程实践与科技创新、PRP项目以及科研类暑期实习等.针对不同实践课程提出了相应的改进措施,使得它们相互取长补短,共同促进培养本科生科研能力教学体系的构建.     

数字信号处理课程中的科研兴趣培养

本科生从事或参与科学研究是目前以及将来高等院校发展的必然趋势，因此有必要在本科教学中培养学生的科研兴趣。基于信号处理基础理论与科学研究的密切联系，本文针对数字信号处理课程缺乏与实践应用结合的问题，论述如何以实际应用为背景，锻炼本科生分析和解决实际问题的能力，从而培养学生的科研兴趣。     

本科生创新课题实践初探

21世纪社会对医学创新型人才的要求日益提高。在本科生时期培养创新型的科研思维、具备较高的科学素养及科研能力对培养创新型医学人才具有非常重要的意义。近年来,各大医学院校开展大学生科研立项,借此培养学生的科研思维能力、提高学生的创新能力、加强医学创新人才的培养。本人作为医学本科生创新课题的一成员,通过实践体会,深入探讨对本科生创新课题的优点和存在的问题。     

通过毕业设计培养学生的科研能力

本科生的毕业设计是培养学生基本科研能力的一个很好的机会，对学生未来的学习和工和有着十分重要的意义，近年来，我们将自身的科研课题与本科生的毕业设计相结合，通过毕业设计有意识地培养学生的基本科研素质，实践表明，这种方法能够充分发挥指导教师和学生两方面的积极性，为圆满地完成毕业设计创造了良好的条件。并且，这种初步的科研经历对学生今后的工作实践和进一步深造有着很大的帮助。     

本科生科研训练的实践与探索

本科研训练是一种很好的实践教育手段,越来越多的高校利用科研训练提高本科生的综合素质.本文通过具体的例子介绍了我校本科生科研训练的实施情况,包括选题、训练内容和训练效果等方面.每个科研训练项目均经历了查阅资料、方案设计、方案评审和方案实施等过程,结果表明本科科研训练可以很好地培养学生的创新能力,提高学生分析问题和解决问题的能力,为学生研究生阶段的学习和工作打下了良好的基础.     

基于科研俱乐部的创新人才培养体系建设

我院依托科研俱乐部,从大学生创新训练计划项目、科研技能培训和学科竞赛等活动入手,在科技活动中实现传帮带,形成高年级学生帮助低年级学生的科研学风。我们从科研俱乐部组织建设、科研俱乐部智囊团建设、创新实践基地资源建设、创新实践基地管理和创新人才培养计划建设这五方面对创新培养体系进行建设。     

研究型大学本科生创新培养体系的研究

为了提高本科生培养质量,加强本科生能力和素质训练,利用科研团队优势和科研实验室条件优势,我院建立了本科生创新训练体系,并设置了“创新训练”课程.该课程具有贯穿大学四年,由初级到高级,由问题作牵引,以学生为主的特点;既丰富完善了本科生实践教学环节,又培养了学生自主学习和创新能力.     

本科生参与科研活动的关键因素探索

学生参与科研活动是培养高层次创新型人才的重要途径。本文从本科生参与科研活动的实例出发,阐述了本科生进行科研活动的必要性和可行性;指出科研活动中的观念转变、兴趣培养、知识储备、科研课题选定、工具软件使用以及外语水平等是其中的关键因素。     

“运动控制系统”课程设计在SRTP中的探索

“运动控制系统”是一门紧密结合理论和实践的综合性课程,在大学生创新、创业等科研竞赛中广泛应用,但多数学生仅停留在基础理论层面,难以较好地应用于实战工程项目中。因此,本文提出在“运动控制系统”课程中基于项目导向型的教学模式,将课程理论知识融入到项目实践中。通过SRTP实践项目“两栖无人机系统的研制”为例,以学生主动分析问题、解决问题为主,教师适时提供指导和建议为辅,全面培养学生创新思维、项目管理能力、科研实战能力和团队协作能力。案例表明该教学模式能够激发学生参与科研训练的积极性和主动性,全面提升学生的综合竞争力。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.