Design and Implementation of PV Power Plant Centralized Information Management System

太阳能作为一种新型的清洁能源，已经受到世界各国的高度关注。近年来光伏发电行业发展十分迅速，光伏装机容量逐年递增，荒漠化土地得到有效利用，但光伏电站普遍存在数量多，分布散，环境恶劣，实现光伏电站少人值守，无人值班，多电站集中管理显得尤为重要。 基于目前国内光伏电站运行现状和存在的相关问题、多电站集中管理的实际需求，本文提出了光伏电站集中信息化管理设计方法，并全面进行光伏电站集中信息化管理系统的功能研究与软件开发设计，从系统总体设计、系统硬件需求、系统软件设计、数据库设计等方面对整个系统进行全面研究及设计。同时，通过西北某大型并网光伏电站为实例，从电站实时监测、设备运行分析、电站运行分析和生产运...Many governments of countries have recently invested a lot to develop renewable green energy resources recently, and solar energy is accepted commonly because of its unusual and technical advantages. Today the developed and used solar energy has become the important basis for the sustainable development strategy of many countries, and photovoltaic electricity generation is the main ways to resolve...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323034

Research and Design of Administrative Examination Management System Application in Xinjiang Region

随着全球信息化趋势的不断推进，世界各国纷纷投资于电子政务建设并已取得显著成效；作为改进政府工作方式的重要方面，我国的电子政务建设也在大力推行中，行政审批是政府事务中与公民关系最密切的工作，也是政务工作的主体部分。因而行政审批的信息化是行政管理信息化建设的焦点问题。过去几年，新疆维吾尔自治区对行政审批流程进行了大幅改革，已取得了一定效果，但同时仍存在一些问题——这又对相关工作提出了更新的要求。 为构建具有“一站式”特点的网上行政审批系统，本文首先调研了当前国内外电子政务行政审批的发展情况，通过对新疆地区的行政审批工作的调研和对电子政务以及政府信息化理论的研究，提出构建一站式的行政审批系统。接着...Along with the development of global informatization, countries all over the world invested in e-government and remarkable results have been achieved. As an important means of improving the government operating style, construction of e-government in China is also carrying out vigorously. The administrative examination (AE) is the main governmental affairs that closely related to citizens,which is ...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X200823021

Application of scan pitot-pressure rake in hypersonic propulsion wind tunnel flow field measurement

在风洞实验中,为了保证实验结果的可靠性,首先需要了解流场的品质.笔者自行设计研制了用于高超声速推进风洞流场测量的带有水冷装置的可移动式扫描总压耙.对于出口截面为300mm×187mm的风洞喷管,通过计算机程序控制,可在3s时间内实现全截面间歇式或连续式扫描,最大移动速度可达250mm/s,而且定位准确.通过扫描结果,分析了流场压力均匀性、稳定性以及实验结果的可重复性,同时还给出了风洞喷管出口截面的总压与马赫数等值线图.从而为超燃冲压模型发动机实验提供参考数据

Study on γ-Aminopropyltrimethoxysilane Films on Transition Metal Surfaces

本文对在过渡金属铁、镍电极表面制备得到的γ-氨丙基三甲氧基硅烷(γ-APS)膜进行了研究。实验中对硅烷膜用X-射线光电子能谱(XPS)、现场表面增强拉曼散射光谱(SERS)和原子力显微镜(AFM)进行了表征。X-射线光电子能谱(XPS)的结果发现存在两个N1s峰,表明γ-APS膜中的氨基有两种存在方式:自由氨基和质子化氨基。实验中还发现现场表面增强拉曼散射光谱(SERS)是研究金属/γ-APS体系中界面层结构非常有效的手段,SERS结果表明硅醇羟基和氨基发生了竞争吸附,且γ-APS分子在外加电位等条件的影响下吸附状态会发生一定变化。原子力显微镜(AFM)的表征结果在微观上显示电极表面的γ-APS膜上形成了一种较规则的微孔结构,这种结构可能与基底的性质有关。The films of γaminopropyltrimethoxysilane (γAPS) prepared on transition metal(iron and nickel electrode) surfaces were studied. The silane films were characterized by Xray photoelectron spectroscopy (XPS), insitu Surfaceenhanced Raman spectroscopy (SERS), atom force microscopy (AFM). XPS results of γAPS modified electrodes showed the presence of two nitrogen binding energy peaks indicating the presence of the amine in two different states, the free amine and the protonated state. It has been found that the insitu surfaceenhanced Raman spectroscopy are useful for diagnosing the structure of the γAPS/metal interface. Results of SERS indicated that the silanol and amino groups adsorbed competitively on the metal surfaces. At the same time, the electrode potential has great influence on the nature of adsorption of these head groups. The films of γAPS on electrode surfaces was characterized by atom force microscopy and showed a kind of regular porous structure on the microscopic scale, it may due to the roughness of the electrode surfaces

PDE/Scramjet组合循环发动机实验研究

本文对一种新概念的PDE/Scramjet 组合循环发动机在自由射流推进风洞中进行了实验研究。着重研究了点火、凹腔对发动机性能的影响。实验发现, 由爆轰管尾部带来的大扩张结构需要强制点火才能保证超燃发动机的稳定燃烧。此外发动机侧面凹腔的引入，对性能有利也有弊，需要进一步权衡。本文还开展了PDE/Scramjet 的联合实验，由于PDE 燃料流量只有超燃发动机的1%左右，导致PDE 对整体发动机性能贡献很小。最后，本文还采用总压恢复模型对组合循环发动机的推力阻力进行了分析

Study on Films of Organofunctional Silanes on Transition Metal Surfaces——The Structure of γ-Aminopropyltrimethoxysilane Films on Nickel Electrodes

在镍电极表面制备了γ 氨丙基三甲氧基硅烷膜 (γ APS)并对其形成和结构进行了研究 .镍电极表面有机官能团硅烷膜的X射线光电子能谱 (XPS)结果表明氮、硅等元素在电极表面的存在 ,并且氨基在膜中有若干种存在方式 ,包括自由氨基和质子化的氨基 .通过对表面增强拉曼散射光谱 (SERS)谱图的分析 ,发现与电极表面作用的吸附基团硅醇羟基和氨基发生了竞争吸附 ,它们及其邻近基团的拉曼谱峰随着电位的负移除了相对强度发生变化以外 ,还发生了一定的位移 ,这缘于吸附基团吸附的量和吸附取向随电极电位发生了变化并形成了更为复杂的界面结构 ;氨基不同存在方式之间也会随之发生转变 ,这一结果与X射线光电子能谱分析的结果相符合 .原子力显微镜 (AFM)结果表明镍电极表面的有机官能团硅烷膜呈现为一种较规则的多孔结构In the present paper, we prepared the γ-aminopro py ltrimethoxysilane (γ-APS) films on nickel electrode surfaces and studied their formation and structure. XPS results of the films of the organofunctional silan es modified nickel electrodes show the presence of nitrogen and silicon bindin g energy peaks indicating the presence of γ-APS on the metal surface. The result s also in dicate that the amine is presented in several different states, including the free amine and the protonated one. The potential-dependent Raman spectra gave plen ty of information of γ-APS/metal interface, the silanol and amino groups adsor bed competitively on the nickel surfaces. While the applied potential was change d negatively from open circuit potential, the peak intensity of the SERS spectra of these adsorptive groups and the adjacent groups changed and the frequencies of the bands red-shifted. It is assumed that the quantity and adsorptive orien tation of the adsorptive groups changed with the change in the potential and for med more complicated structure of interface. It was also found that the differen t states of amine transformed with the change in the potential, this can be conf irmed by the results of XPS. Atom force microscopy (AFM) was applied to characte rize the silane films. It could be concluded that the films of the organofunctio nal silanes are porous on the microscopic scale.厦门大学固体表面物理化学国家重点实验室开放课题资

Performance of the fuel injector in supersonic combustor

Enhancing the fuel-air mixing is critical for scramjet combustor performance. The performance of four different aerodynamic ramp injectors was reported in this paper. The experiments were conducted in a direct-connected scramjet test facility. The concentration profiles were obtained by gas sampling and chromatogram analysis. The pictures of the flow field were obtained by using laser scatter. It would be used to analyze the flow field generated by the aerodynamic ramp, then optimize the layout of the injectors. The results would offer some useful information for engine design. Copyright © 2009 by the American Institute of Aeronautics and Astronautics, Inc

Investigation on population dynamics of Fejervarya multistriata in plantations of Fujian Province, eastern China.

2011年6—9月和2012年4—5月,采用“围栏陷阱法“对福建省将乐县国有林场典型人工林内泽陆蛙种群进行调查,共捕获泽陆蛙222只。采用聚类分析方法,按照体长、体重将泽陆蛙划分为成体和亚成体,分析不同月份、不同类型人工林、不同林龄人工林内泽陆蛙的日均捕获量、肥满度和重长比的变化规律。结果显示:1)人工林泽陆蛙日均捕获量随月份变化先减小后增大,肥满度无显著变化,重长比先增大后减小。2)人工林泽陆蛙肥满度、重长比,混交林高于纯林;日均捕获量纯林高于混交林。3)随人工林林龄的增加泽陆蛙肥满度、重长比增大,中龄林泽陆蛙日均捕获量最高。研究结果可为人工林物种多样性保护提供新思路,并为人工林经营模式的转变提供参考。From June to September 2011 and April to May 2012, we had made a preliminary investigation on the rice frog communities in different typical plantations using the "Fence with pitfall trap" in Jiangle County of Fujian Province, eastern China and 222 rice frogs were captured.Based on snout-vent length and body weight, rice frogs were divided into adult and subadult by using cluster analysis.The variation of daily-catches, relative-fatness and weight/length index were analysed in different months, different types of plantations and varied age of plantations.The result showed that: 1) the daily-catches and weight/length index of rice frog in plantations decreased first and then increased from April to September, and the relative-fatness had no significant changes; 2) The relative-fatness and weight/length index of rice frog in pure plantations were higher than mixed plantations, and the daily-catches was contrary;3) The relative-fatness and weight/length index of rice frog were growing with the age of plantations, and the daily-catches reached the highest in middle age plantations.The results can provide new ideas for protecting the species diversity in plantations and guide for changing the management mode of plantations.林业公益性行业科研专项(200904003

光学微球腔谐振模式间隔参数的一种简便计算方法

从光学微球腔谐振模式的本征方程出发,提出了一种利用求导法计算谐振模式间尺寸参数(x)间隔的有效方法。在Lam求得的尺寸参数计算公式基础上,依据谐振模式角量子数(l)必须为整数且远远大于1的性质,相邻模式(Δl=1)间的尺寸参数间隔可近似表示为相应尺寸参数的导数,从而可利用求导法计算谐振模式之间的尺寸参数间隔。研究表明,径向量子数i=1的谐振模式的尺寸参数间隔与Mie散射理论求得的精确数值解之间的相对误差在0.05%以内,并且与实验测量数据基本一致。求导法因不需要进行繁琐的级数展开,从而大大简化了计算程序,为光学微球腔的实验研究提供了理论指导

Study on films of organofunctional silanes on transition metal surfaces - The structure of gamma-aminopropyltrimethoxysilane films on nickel electrodes

In die present paper, we prepared the gamma-aminopropyltrimethoxysilane (gamma-APS) films on nickel electrode surfaces and studied their formation and structure. XPS results of the films of the organofunctional silanes modified nickel electrodes show the presence of nitrogen and silicon binding energy peaks indicating the presence of gamma-APS on the metal surface. The results also indicate that the amine is presented in several different states, including the free amine and the protonated one. The potential-dependent Raman spectra gave plenty of information of gamma-APS/metal interface, the silanol and amino groups adsorbed competitively on the nickel surfaces. While the applied potential was changed negatively from open circuit potential, the peak intensity of the SERS spectra of these adsorptive groups and the adjacent groups changed and the frequencies of the bands red-shifted. It is assumed that the quantity and adsorptive orientation of the adsorptive groups changed with the change in the potential and formed more complicated structure of interface. It was also found that the different states of amine transformed with the change in the potential, this can be confirmed by the results of XPS. Atom force microscopy (AFM) was applied to characterize the silane films. It could be concluded that the films, of the organofunctional silanes are porous on the microscopic scale