《计算机导论》课程双语教学模式的开发与探讨

本文通过分析目前双语教学的现状,提出将《计算机导论》课程作为计算机专业的第一门双语课程,重在探讨开展双语教学的必要性及《计算机导论》课程实施双语教学的方法和步骤。     

"数据结构"课程双语教学的研究与实践

结合东南大学教学改革项目——“数据结构课程双语教学的研究与实践”,论述了改革的建设目标、主要措施、基本认识和实践效果。指出“数据结构”课程双语教学,有利于培养国际化的专业人才。开展双语教学,应该选择优秀原版教科书,应将教学的重点放在专业上,不断改进教学方法,提高教学效率。网上学生评教信息表明,数据结构课程双语教学取得了满意的效果,培养了学生的创新能力、学习兴趣和科学态度。最后讨论存在的问题及进一步的工作。     

《计算机导论》课程双语教学模式的研究与探索

自2001年起,国家教育部指出对于一些高新技术领域的专业,要创造条件使用外语进行公共课和专业课的教学,各个院校纷纷开展双语教学。文章分析了信息技术相关专业的《计算机导论》课程开展双语教学的必要性,从教学目标、师资队伍、教材方面提出了行之有效的课程建设意见,并从教学模式、教学过程、教学资源、实践教学、评价机制方面探索了更高效的实施双语教学的办法。     

“自动控制原理”课程双语教学实践探索

双语教学是课程国际化的重要手段,也是一个必然的发展趋势。“自动控制原理”双语课程是我院电子、通信、信息工程专业信号处理系列双语课程群中的一门。本文探讨了“自动控制原理”课程双语教学模式,从双语教材的选择、班级组成、课堂教学方法、考核方式等方面论述了各种提高教学效果的方法和措施,以及开展科研成果和案例进课堂、与国外教授合作授课的情况。     

“通信原理”双语教学探索与实践

本文介绍了“通信原理”双语课程建设中进行的一些有益探索和实践.阐述了开展“通信原理”双语教学的原因和意义,针对课程特点从教学理念更新、教学内容改革、教学方法综合运用三个方面总结了教学过程中的问题和相应的解决方法,最后针对进一步提升教学效果提出了几点思考.     

信号处理与系统课程双语教学实践与思考

从教材选择、备课、授课以及授课效果评估等方面介绍了“信号处理与系统”课程双语教学改革的实施情况。教学效果的综合评估与分析表明：教学方法的变革不仅激发了学员的学习兴趣,培养了创新意识,而且提高了英语综合运用能力。本文分析和讨论了进行双语教学改革所面临的实际困难,给出了克服这些困难的一些建议,以便更好地开展双语教学。     

模拟电子技术双语教学思考与实践

双语教学是目前高等院校教育改革的主要内容之一。笔者通过对电子与信息工程系的学生开设“模拟电子技术”课程的双语教学实践,就专业基础课进行双语教学的意义、可行性、实施的具体措施以及教学效果进行了有益的探讨。文中对原版教材的选择与合理使用,双语教学师资队伍的组建,全英文多媒体课件的制作及双语教学的各个环节实施情况进行了阐述,并对双语教学实践结果进行了综合评价。最后分析了双语教学所面临的问题及发展思路。     

从数字电子技术教材看中外两本教材的差别

“数字电子技术”是电气工程和计算机学科必修的基础课程,随着众多高等院校双语教学活动的开展,全英文版国外教材开始受到关注.本文从教学内容、体系安排、理论阐述特色及与工程实践的联系等诸多方面重点对两本国内外教材进行了比较研究.总体而言,相较于国内众多的教材,国外教材对问题的论述更加细致,与工程实践和实际应用的联系更为紧密,可作为教学、学生自学和参考的工具.     

"模拟电子技术"课程双语教学资源库的建设

考虑到"模拟电子技术"课程开展双语教学对教学资源需求的迫切性,我校参考了国内兄弟院校双语教学经验,分析了国外知名大学的教学大纲与教学资源,开展了适合我校学生接受能力的双语教学用的PPT课件制作与习题设计,并构建了符合教学大纲的全英文教学影像和文档资源库.教学应用表明,这些教学资源的建设,对课程的双语教学起到了很好的支撑作用.     

地方高校双语教学模式研究

地方高校开展双语教学过程中,有许多问题要解决。本文对双语教师如何正确认识双语教学的本质和目标;如何改革教学方法与教学手段;如何合理选择教材和教学资源;如何建立健全双语教学管理机制,确定双语教学标准,认定双语教学师资,监控和评价双语教学效果,合理设置双语教学课程体系等问题进行了详细阐述。     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

GaAsSb/InAlAs PA DHBTs Grown by Production MBE

The epi material growth of GaAsSb based DHBTs with InAlAs emitters are investigated using a 4 × 100mm multi-wafer production Riber 49 MBE reactor fully equipped with real-time in-situ sensors including an absorption band edge spectroscope and an optical-based flux monitor. The state-of-the-art hole mobilities are obtained from 100nm thick carbon-doped GaAsSb. A Sb composition variation of less than ± 0.1 atomic percent across a 4 × 100mm platen configuration has been achieved. The large area InAlAs/GaAsSb/InP DHBT device demonstrates excellent DC characteristics,such as BVCEO＞6V and a DC current gain of 45 at 1kA/cm2 for an emitter size of 50μm × 50μm. The devices have a 40nm thick GaAsSb base with p-doping of 4. 5 × 1019cm-3 . Devices with an emitter size of 4μm × 30μm have a current gain variation less than 2% across the fully processed 100mm wafer. ft and fmax are over 50GHz,with a power efficiency of 50% ,which are comparable to standard power GaAs HBT results. These results demonstrate the potential application of GaAsSb/InP DHBT for power amplifiers and the feasibility of multi-wafer MBE for mass production of GaAsSb-based HBTs.     

Noise character analysis and the restraint of self-pulsation laser diodes

We calculate the Langevin noise sources of self-pulsation laser diodes, analyze the effects of active region noise and saturable-absorption region noise on the power fluctuation as well as period fluctuation, and propose a novel method to restrain the noise effects. A visible SIMULINK model is established to simulate the system, The results indicate that the effects of noise in absorption region can be ignored; that with the increase of DC injecting current, the noise effects enhance power jitter, and nevertheless, the period jitter is decreased; and that with external sinusoidal current modulating the self-pulsation laser diode, the noise-induced power jitter and period jitter can be suppressed greatly. This work is valuable for clock recovery in all-optical network.     

High-quality single-crystal CdSe nanoribbons and their optical properties

Large-scale synthesis of single-crystal CdSe nanoribbons is achieved by a modified thermal evaporation method, in which two-step-thermal-evaporation is used to control CdSe sources＇ evaporation. The synthesized CdSe nanoribbons are usually several micrometers in width, 50 nm in thickness, and tens to several hundred micrometers in length. Studies have shown that high-quality CdSe nanoribbons with regular shapes can be obtained by this method. Room-temperature photolumines-cence indicates that the lasing emission at 710 nm has been observed under optical pumping （266 nm） at power densities of 25-153 kW/cm^2. The full width half maximum （FWHM） of the lasing mode is 0.67 nm     

Propagation of hermite-cosh-gaussian beams passing through ABCD optical system with an annular aperture

By using the expansion of the aperture function into a finte sum of complex Gaussian functions, the corresponding analytical expressions of Hermite-cosh-Gaussian beams passing through annular apertured paraxially and symmetrically optical systems written in terms of ABCD matrix were derived, and they could reduce to the cases with squared aperture. In a similar way, the corresponding analytical expressions of cosh-Gaussian beams through annular apertured ABCD matrix were also given. The method could save more calculation time than that by using the diffraction integral formula directly.     

Influence of polarization extinction ratio on distributed polarization coupling detection

Distributed polarization coupling in polarization-maintaining fibers can be detected by using a white light Michelson interferometer. This technique usually requires that only one polarization mode is excited. However, in practical measurement, the injection polarization direction could not be exactly aligned to one of the principal axes of the PMF, so the influence of the polarization extinction ratio should be considered. Based on the polarization coupling theory, the influence of the incident polarization extinction on the measurement result is evaluated and analyzed, and a method for distributed polarization coupling detection is developed when both two orthogonal eigenmodes are excited.     

Call for Papers

正Communications—VLSI Researches and industries of telecommunications have been growing rapidly in the last 20 years and will keep their high growing pace in the next decade.The involved researches and developments cover mobile communications,highway and last-mile broadband communication,domain specific communications,and emerging D2D M2M communications.Radio communication steps into its