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The main work can be summed up as follows: Firstly, we studied the thermal-field properties of VCSELs, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. Secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of VCSELs, and then studied the influences of the oxide-confining region with different position or thickness, and the different sizes of the gain-guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. Thirdly, we realized the coupling of electricity, optical and thermal-fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, Fermi levels and optical-field. Finally, we gave the equipotential line distributions with considering N-DBR and double oxidized-confining regions, and analyzed theinfluences of N-DBR and double oxide-confining regions on the distributions of the current density, carrier concentration, temperature and optical-field.

具体工作可以概括如下:首先,研究了VCSEL的热场特性,分析了电流扩展,材料参数和工作条件对于温度分布的影响;其次,从电极电压入手,计算出激光器中的等势线分布,并对不同深度处的电压和电流分布进行比较,研究了高阻区的不同位置和不同厚度、限制层和出射窗口半径的大小对电流密度、载流子浓度和温度分布的影响;再次,实现了电、光、热耦合,求出了阈值电压,计算了不同偏置电压下的电流密度分布、载流子浓度分布和热场分布,分析了温度和载流子浓度变化对折射率、费米能级和光场的影响;最后,给出了考虑N-DBR和双氧化限制层时激光器中的等势线分布,分析了N-DBR和双氧化限制层对VCSEL电流密度、载流子浓度、温度和光场分布的影响。

Structural accommodation zone s are usually studied in extensional basins in eastern China, but less studied in compressional basins in western China.

构造调节带的有关问题在我国东部伸展盆地中研究较多,而在西部挤压盆地中研究相对较少。

The difference between dynamic performance and static performance of catalyst is studied by test. And the effect of A/F ratio fluctuation with difference amplitude and frequency has been studied.

对催化剂的动态性能和静态性能进行了试验对比,并针对不同幅值和频率的空燃比波动对催化剂性能的影响进行了试验研究。

The difference between dynamic performance and static performance of catalyst is studied by test.And the effect of A/F ratio fluctuation with differ-ence amplitude and frequency has been studied.

对催化剂的动态性能和静态性能进行了试验对比,并针对不同幅值和频率的空燃比波动对催化剂性能的影响进行了试验研究。

In this paper, the strengthen mechanism of fiber chop was firstly analyzed based on stress transfer theory, fiber space theory and composite mechanism of fiber reinforced polymer concrete was studied, an then the mechanical properties of the polymer concrete was studied, which was mixed with Durafiber.

本文首先应用应力传递理论、纤维间距理论和复合材料机理对短纤维增强树脂混凝土的增强机理进行了初步分析;然后,在呋喃树脂混凝土中加入杜拉纤维,对其力学性能进行了研究。

Diffusion problem of a predator-prey model with Holling typeⅡfunctional capturing function is studied. Stability condition is obtained when diffusion is absent, and the effect on stability of positive equilibrium is studied when diffusion is present. In the end, the problem of existence of limit cycle is proved in the first quadrant when diffusion is absent.

针对一类具有HollingⅡ型功能捕获函数的捕食-食饵模型的扩散问题进行了研究,得到了无扩散时正平衡点的稳定条件,以及扩散存在时对正平衡点稳定性产生的影响,最后证明了无扩散时系统在第一象限存在极限环的问题。

Planktonic foraminifera assemblages of 79 core top samples from the western and southern areas of the Indonesian Archipelago were grouped using cluster analysis. The results indicate that foraminifer assemblages make it possible to sub-divide the studied area in five provinces. The modern ocean characters and the surface sediment features from the five provinces are studied in the project.

本项目依据印度尼西亚多岛海及邻区七十九个海底表层样品的浮游有孔虫组合聚类分析结果,将该区划分为五个洋流活动区,对各区现代海洋学性质与海底表层沉积物特点进行对比研究。

Based on the hydraulic model test of Pudong north road pumping station in Shanghai, the hydraulic characteristics of the forebay were studied in the conditions of no diversion, the set-up of water-depressed plate and the set-ups of water-depressed plate and guide piers . Also, the hydraulic characteristic of the siphon outlet piping was studied.

本文结合上海市浦东北路泵站水力模型试验研究课题,从城市排污泵站布置的特点出发,研究和分析了前池在改善流态无工程措施情况下、设置压水板措施和设置导流墩和压水板组合措施情况下前池的水力特性;虹吸式出水管在虹吸形成过程和虹吸破坏过程的水力特性。

Portable Document Format is the object to be studied in my paper, which is one of the electronic document formats. How to write image data to PDF is the focus of the study. Image data compression and its application in PDF are studied in-depth in the paper.

本文以电子文档格式PDF为研究对象,以如何将图像数据保存到PDF中为研究重点,深入地研究了图像数据压缩在PDF中的应用。

This text has studied the historical origin and realistic background of the sustainable development thought; has narrated current situation and trend of domestic and international sustainable development research; has provided the definition of regional sustainable development on the foundation of analyzing constant concept; has stressed the rationality, systematicness and practicality of sustainable development; has set up the conceptual model of regional sustainable development, structured the regional sustainable development evaluation index system frame and appraise models; has studied the judge base of regional sustainable development.

本文探讨了可持续发展思想的历史渊源和现实背景,综述了国内外可持续发展研究现状和趋势;在剖析可持续性概念的基础上探讨了区域可持续发展的定义,突出了可持续发展的区域性、系统性和实践性;建立了区域可持续发展的概念模型,构建了区域可持续发展评价指标体系框架和评价模型,探索了区域可持续发展的判断依据。

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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

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