Research of Birefringent Properties and Application on the Highly Birefringent Photonic Crystal Fiber

基于光子晶体材料的基本特性与特点，上世纪90年代初Ph.St.Russell等人提出了光子晶体光纤的概念与设计。光子晶体光纤具有许多传统光纤不具有的特性，如无截止单模特性，灵活的色散特性、大模式面积、非线性效应等。通过对光子晶体光纤空气孔的形状、大小和排列方式的调整，可以得到很好的偏振保持光纤。 普通保偏光纤双折射特性的测量方法主要分为基于拍长测量的横向移动压力法、磁光调制法等等；基于偏振色散的波长扫描法以及折射近场法。由于高双折射光子晶体光纤(HB-PCF)的高双折射结构特点，目前其双折射特性的测量方法主要分为三类间接测量法；第一类为波长扫描法,第二类为扭转法，第三类为偏振敏感的光频域反射...Concept and design of the photonic crystal fiber (PCF) was proposed by Ph. St. Russell and others in the early 1990s. Photonic crystal fiber (PCF) has many properties, such as endlessly single mode; flexible dispersive property; large mode area, etc. Highly birefringent photonic crystal fiber could be obtained through changing the shape、size and rearranging the air holes. The birefringence of p...学位：理学硕士院系专业：信息科学与技术学院电子工程系_无线电物理学号：S20043003

The Analysis of PHS Marketing Strategy in Xiamen

“小灵通”的推出在国内一直是颇有争议的话题，也是监管部门想回避而又无法回避的问题。以“小灵通”进入北京、上海为标志，“小灵通”已逐渐从暗处走向明处。厦门“小灵通”一经推出，便以惊人的速度发展，三年内用户规模接近多年经营发展起来的联通GSM用户数的1.5倍。本文运用作者就读MBA期间所学的营销和管理知识，结合作者在移动通信行业几年来对厦门“小灵通”业务的关注，对厦门“小灵通”的发展历程和现状进行了分析，对需要了解“小灵通”发展经验、教训以更好地从事移动通信业务的读者具有一定的现实意义。全文共分四章。第一章简要介绍其他国家和中国无线市话发展情况，并简单介绍了厦门“小灵通”发展概况。第二章介绍了厦门...The development of PHS in domestic market has been disputed. It is also a problem that the supervisory departments can’t avoid although they have been trying to. PHS has become legal in fact as it appears in Beijing and Shanghai. In Xiamen, PHS is developing at a striking speed and the users of PHS are nearly one and a half times as many as that of Xiamen Unicom who has operated for several years....学位：工商管理硕士院系专业：管理学院工商管理教育中心_工商管理硕士(MBA)学号：19991502

3D Measurement Technology Based on Shape From Silhouette

摘要 三维测量技术已成为现代测试技术中一个重要的研究领域。SFS(ShapeFromSilhouette)是被动式3D测量方法，即为视觉测量技术，具有非接触式测量的优点：测量速度快，软工件、薄工件、不可接触的高精密工件可直接测量等。近些年来，越来越受到人们的重视。 本文以SFS三维测量技术为主线，提出了一种将SFS技术应用在三坐标机上的新方法，构建了一套自动的视觉测量硬件系统；采用MATLAB和VC混合编程，完成了视觉测量软件系统;采用所搭建的视觉测量系统对物体进行三维测量，通过采集图像、提取轮廓、应用SFS技术完成对物体的三维重构，完整地获得了物体的三维模型。 本文的主要特色及创新...ABSTRACT The 3D measurement of objects of modern testing technology has become an important research field. SFS (Shape From Silhouette) is a passive non-contact 3D measurement method, which is used in 3D modeling and reverse engineering etc. Using SfS method, a simple, low cost, efficient and accurate 3D information acquisition system can be established and the request of the surface material o...学位：工学硕士院系专业：物理与机电工程学院机电工程系_测试计量技术及仪器学号：1992006115188

The teaching reform and practice of course design of electronic system

本文介绍了我校电子通信类专业的电子系统课程设计的教学改革与实践,分析了课程的特点及重要性,课程改革的基本思路,通过分层次、分阶段的综合训练及创新训练,培养学生系统设计的基本方法和手段,培养学生分析问题及解决问题的能力,训练学生团队协作精神。This paper introduces the electronic communication engineering in our school's teaching reform and practice of the curriculum design of electronic systems,analyses the course characteristics and the importance of the curriculum reform of basic thought,through hierarchical and phases of comprehensive training and innovation training,trains the student to system design,the basic method and means to cultivate students the ability to analyze and solve problems,training students' team cooperation spirit

浅析欧元现状与前景

欧元启动以来,在国际外汇市场上表现出疲软态势,主要原因是欧美经济增长差距过大,欧美对货币的态度不一等。近期,欧元走势将有所回升,但回升幅度不可能太大,汇率波动仍将频繁。但相信在不久的将来,欧元必将有所作为

Study on the gene expression profile in the bone tissue in primary osteoporosis with kidney-yang deficiency syndrome

目的通过检测原发性骨质疏松症不同中医证型患者骨组织基因表达谱的差异,探讨原发性骨质疏松症肾阳虚证相关基因的信息学特征。方法随机选择原发性骨质疏松; 症患者,中医辨证分型为肾阳虚证组3例,肾阴虚证组3例,无肾虚证组3例,并选择正常骨密度人群3例设为正常对照组。用人全基因组表达谱芯片检测4组人群; 骨组织基因表达谱,筛选共同的差异表达基因,并对这些差异表达基因进行基因通路等相关功能分析。结果肾阳虚证组与正常对照组、肾阴虚证组、无肾虚证组的差; 异表达基因分别为2631条、3976条、6184条;肾阳虚证组与其他3组比较共同的差异表达基因有1037条。这些差异基因参与补体与凝血级联反应、; Hedgehog、TGF-beta、细胞周期等22条信号通路。结论原发性骨质疏松症肾阳虚证的相关基因主要与免疫调节、TGF-beta、细胞周期等; 信号通路相关。Objective To investigate the characteristics of genes expression; profiles of primary osteoporosis with kidney yang deficiency through; analyzing the gene expression difference with gene micro-array. Methods; Patient with osteoporosis were rand omly divided into kidney-yang; deficiency group (n = 3),kidney-yin deficiency group (n = 3),non-kidney; deficiency group (n = 3),according to the syndrome differentiation of; traditional Chinese medicine. Another 3 people with normal BMD were; selected as normal control. Expression profiles of the bone tissue from; 4 groups were detected to screen differentiated expression genes.; Analysis of pathway and other function among these genes was conducted.; Results The number of differentiated expression genes in kidney-yang; deficiency group were 3976,6184,and 2631,compared to kidney-yin; deficiency,non-kidney deficiency,and normal control group,respectively.; The number of common differentially expressed genes were 1037. These; genes were involved in 22 pathways,including complement and coagulation; cascades,Hedgehog signaling pathway,TGF-beta signaling pathway,and cell; cycle. Conclusion Genes related to kidney-yang deficiency syndrome in; primary osteoporosis are mainly related to complement and coagulation; cascades,Hedgehog signaling pathway,TGF-beta signaling pathway,and cell; cycle.福建省科技厅省属公益类科研院所基本科研专项; 福建省自然科学基金项

Study on Zn Diffusion in Ⅲ-Ⅴ Semiconductor Compounds Using Rapid Thermal Annealing Process

以gAAS和InP材料为例,对化合物半导体材料中的快速热退火扩zn可行性进行比较分析,研究表明,化合物半导体材料中快速热退火扩zn可行性与化合物半导体材料的分解温度有着密切关系。化合物半导体材料分解温度越低,对扩散源、帽层和阻挡层要求越高。针对InP材料高于360℃就分解、低温zn扩散困难的特点,提出了直接溅射zn层在410℃低温扩散的方法。对InP快速热退火扩散结果进行分析,初步分析表明其掺杂机理是形成合金结。Zn diffusion in Ⅲ-Ⅴ semiconductor compounds (GaAs and InP) using rapid thermal annealing(RTA) process was investigated.The feasibility of this method mostly depends on decompounded temperature of Ⅲ-Ⅴ semiconductor compounds.The lower the decompounded temperature,the higher the requirements on the diffusion layer,diffusion prevented layer and cap layer.As the decompounded temperature of InP is 360 ℃,it is hard to carry out Zn diffusion in low temperature,a method of Zn diffusion from direct sputtering Zn films into InP at 410 ℃ was proposed.The primary mechanism of Zn diffusion in InP is assumed that alloy junctions come into being using rapid thermal annealing

FTIR and XPS Analysis of Directly Bonded Si/Si Interface

【中文文摘】通过新颖的键合方法实现了Si/Si直接键合。采用傅里叶红外透射谱(FTIR)对Si/Si键合界面进行了研究,结果表明,高温退火样品的界面组分为Si和O,无OH和H网络存在。X射线光电子谱(XPS)测试结果进一步表明,界面主要为单质Si和SiOx混合网络,且随着退火温度的升高,界面层Si-Si直接成键的密度也越高。 【英文文摘】The Si/Si direct bonding has been achieved by a new bonding technology. Fourier transform infrared spectrum(FTIR) and X-ray photoelectron spectroscopy(XPS) are used to analyze the interface of Si/Si bonding. The results show that there are notinfrared absorbtion peak related to the Si-H bonding and Si-OH bonding in the interface at high temperature, and the interface is consisted of Si and SiO_x. In addition, the research indicates also that the Si/Si bonding density is increased with the increase of bonding temperature

Interface of Si/Si Directly Wafer Bonding

【中文文摘】通过三步直接键合方法实现了 Si/ Si键合。采用 XPS、FTIR、I-V、拉伸强度等手段对 Si/ Si键合结构的界面特性作了深入广泛的研究。研究结果表明 ,高温退火后 ,在键合界面没有 Si-H和 Si-OH网络存在 ,键合界面主要由单质 Si和不定形氧化硅 Si Ox 组成。同时 ,研究还表明 ,I-V特性和键合强度强烈地依赖于退火温度。 【英文文摘】The Si/Si bonding has been achieved by three-step direct wafer bonding technology. Interfacial characteristic has been widely investigated by the X-ray photoelectron spectronscopy (XPS), Fourier transform infrared spectrum (FTIR),I-V and tensile strength. The results show that there are no infrared absorbtion peak related to the Si-H bonding and Si-OH bonding in the interface at high temperature, and the interface is made up of Si and SiO_x. In addition, the researches indicate that both I-V characteristic and bonding energy strongly depend on annealing temperatu re.国家基金 (项目编号 :6 0 0 0 6 0 0 4);; 国家重点基金 (项目编号 :6 0 336 0 1 0 )项目支

Survey on the distribution of dietary glycemic load and dietary insulin load of urban residents in Xiamen

目的了解厦门市城区居民碳水化合物消费情况及膳食血糖负荷及膳食胰岛素负荷的现状,调查膳食血糖负荷及膳食胰岛素负荷与生化指标。方法根据全国营养调查方案,2010年10-12月对厦门市城区的6个社区居委会成年居民进行调查,采用连续3 d 24 h回顾法对其中的291人进行膳食调查、身体测量及生化指标测量;根据膳食血糖生成指数(GI)和碳水化合物摄入量计算膳食血糖负荷(GL);根据膳食胰岛素指数(II)和能量及食用频率计算膳食胰岛素负荷(IL)。结果被调查的厦门市城区成年居民的平均膳食血糖指数为75.2;平均膳食血糖负荷为179.1;平均膳食胰岛素指数为30.4,平均膳食胰岛素负荷为247.2。粮谷类对膳食GL、IL的贡献达92.0%、83.1%。不同GL、IL水平的被调查人群的身体测量及生化指标间的差异无统计学意义;通过多元线性回归分析并未发现膳食GI、GL、II、IL与糖尿病的患病风险有明显的相关性。结论粮谷类食物是厦门市城区居民膳食GL、IL的主要来源,低膳食GL的人群粮谷类消费低,脂肪消费高,膳食结构不合理;并未发现膳食GL、IL与身体测量及生化指标之间的联系。Objective This work was to investigate the consumption of carbohydrate and distribution of dietary glycemic load(GL)and insulin load(IL) of urban residents in Xiamen. Methods According to the National Nutrition Survey program, six communities' residents of Xiamen were selected for the survey from Oct.~ Dec., 2010. A total of 219 subjects were surveyed with the 3consecutive days and 24 hours review method to acquire the food consumption data and underwent health examination. Dietary insulin load was calculated as a function of the food insulin index, and the energy content of individual foods was reported on food-frequency questionnaires. Dietary glycemic load was calculated by GI. Results 92.1% of the dietary glycemic load and 83.1%of the dietary insulin load were from cereals. Dietary insulin load and dietary insulin index were not associated with the overall biochemical index. The dietary GI, GL, II, IL was not positively associated with the risk of diabetes. Conclusion People with low GL tend to consume more fat and less carbohydrates