对...进行研究

What this paper finished mainly work as follows: Five-phase hybrid step motor driver system with fixed-chopping frequency and constant total current driving is fully described. Mathematical model of the system, included the current control circuit, power driving circuit and five-phase hybrid stepping motor is established. The steady modeling of the system is established and studied. Based on the steady modeling of the system, dynamic modeling of the system is studied and single step response characteristic is constructed with MATLAB/Simulink. The simulation results, which is certified by the theory analysis, coincide with the theory analysis.

本文主要完成的工作包括几个方面：对五相混合式步进电动机恒频斩波恒总流驱动系统进行了完整的描述；建立了包括电流控制电路、功率驱动电路以及五相混合式步进电动机在内的恒频斩波恒总流驱动系统的完整的数学模型；基于MATLAB/Simulink建立了恒频斩波恒总流驱动系统稳态仿真模型，并进行了仿真；在建立其稳态仿真模型的基础上，对动态模型进行研究，并借助于MATLAB/Simulink工具建立了恒频斩波恒总流驱动系统单步响应特性的仿真模型并对其单步响应特性进行了仿真研究，仿真结果与理论分析相符。

This text discusses in details the followed principle in questionnaire design process: the type of questionnaire design,the choice of the answer format,the topic design,the guide word,the questionnaire trial and analysis etc.

从事心理学、社会学及其他学科调查研究的工作人员，经常需要对人的心理和行为属性进行定量分析，他们用问卷作为收集研究资料的工具，在精心设计的抽取能够代表总体的样本基础上，采用问卷可得到大量的统计信息，对这些信息进行深入的分析，可验证研究假设并对所研究的问题作出科学的解释和说明。

The paper consists of four chapters:In chaper 1, we introduce the background and signficance, research and actuality on oscillation of functional partial differential equations; we present research subject in this paper;In chaper 2, we discuss oscillatory property of systems of parabolic differential equations with delays and obtain necessary and sufficient conditions for the oscillation of their solutions; we show the difference between oscillatory property of systems of parabolic differential equations with delays and that of systems of partial differential equtions without delays; we explain the main results with examples;In chapter 3, we discuss oscillatory property of systems of functional parabolic differential equations of neutral type; we obtain some sufficient conditions for the oscillation or full oscillation of their solutions under some conditions; we explain the main results with examples;In chapter 4, we discuss oscillatory property of systems of functional hyperbolic differential equations of neutral type; we obtain sufficient conditions for the oscillation or full oscillation of their solutions under some conditions; we explain the main results with examples.

全文共分四章：第一章简要介绍了泛函偏微分方程的振动的背景和意义、对其研究的简单历史和现状，给出了本文的主要研究对象；第二章讨论了一类时滞抛物方程组解的振动性质，获得了判断其所有解振动的一个易于验证的充要条件；指出了这类具有时滞偏差变元的抛物方程组解的振动性质和不具有时滞偏差变元的抛物方程组解的振动性质的差异；并举例对主要结果进行阐明；第三章讨论了一类中立型抛物方程组解的振动性质，获得了在给定的条件下其所有解振动或全振动的若干充分条件；并举例对主要结果进行阐明；第四章讨论了一类中立型双曲方程组解的振动性质，获得了在给定的条件下其所有解振动或全振动的若干充分条件；并举例对主要结果进行阐明。

Taking into account the large number of information contained in authoritative journal about the History of Science, while avoiding the unreliability of results concluded by a single journal, through analyzing the contents metrically from 1993 to 2005 in three most authoritative journals on History of Science (ISIS, History of Science , British Journal for the History of Science), the paper displayed detailedly the microcosmic orbits of History of Science, revealed the hot points and hold the trends from the macrocosm and provided evidence and theoretical support for Historiography of Science. This will undoubtedly have an important academic value and theoretical significance.This article has three parts.

考虑到权威期刊所蕴涵的大量的科学史信息，同时避免单一期刊研究结论的不可靠性，本文选取国际上最权威的三份科学史综合期刊《爱西斯》、《科学史》、《英国科学史杂志》(British Journal for the History of Science)，对1993-2005年的内容进行计量分析，详细地展示这十多年来科学史研究的微观发展过程，并在三者计量结果进行相互比较印证的基础上，揭示科学史研究热点及发展脉络，从宏观上把握科学史研究的学术走向，对科学史研究重点的调整提供证明与借鉴，并为科学编史学的研究提供理论支持。

The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ~1HNMR,~(13)CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.

本文研究的内容主要包括以下部分：(1)设计并合成5个对称的以齐聚苯乙烯类为骨架的分子内电荷转移型齐聚苯乙烯类发光材料；(2)通过IR，MS，~1H-NMR，~(13)C-NMR和元素分析对所合成的目标化合物进行表征；(3)通过对目标化合物的紫外光谱和荧光光谱比较分析，研究改变OPV的长度，电子给体和电子受体的位置及数量对其光电性能的影响，探讨材料发射红移的主要因素；选取性能良好的目标化合物P4制备成OELD器件，对其电致发光性能进行研究；(4)运用Gaussian98量子化学程序包，采用量子化学方法对目标化合物P4的光电性能从理论加以解释，进一步认识荷移跃迁的整个过程，为红光材料的设计加以指导。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

This article take participates in the seventh session of athletic meet for people with disabilities wheelchair basketball competition's male and female each 8 provinces and cities team as the object of study,uses the scene to observe and emulate,consult research techniques and so on literature material, questionnaire survey and interview,mathematical statistic,logic analysis and video recording analysis,carried on the scene to the competition to observe and emulate with the video recording analysis,simultaneously to participated in competition's trainer,the staff as well as the athlete carries on the interview and the questionnaire survey,in grasped the mass data in the foundation,conducted the research and the analysis to our country wheelchair basketball present training condition.

第七届全国残运会期间，本人伴同导师一起前往昆明实地调研。本文以参加第七届残疾人运动会轮椅篮球比赛的男女各8支省市队为研究对象，采用现场观摩、查阅文献资料、问卷调查及访谈、数理统计、逻辑分析和录像分析等研究方法，对比赛进行了现场观摩和录像分析，同时对参与比赛的教练员、工作人员以及运动员进行访谈和问卷调查，在掌握大量数据的基础上，对我国轮椅篮球目前存在的若干问题进行研究与分析。

The text is on one hand, adopt the method of comparative study and the method of historical study to analyze the evolution of history and present condition of judicial interpretation in China and the west two major law system. On the other hand, adopt the analytic method to analyze the present condition of judicial interpretation in China. Proceeding the research for the hot and controversial questions of judicial interpretation from the academic angle to deepen the understanding in judicial interpretation. At last, the author puts forward to the imaginings of perfecting the Chinese judicial interpretation.

本文一方面，采取比较研究的方法和历史研究的方法对中国与西方两大法系司法解释的历史发展及现状进行分析；另一方面，采用归纳分析的方法对当代中国司法解释的现状深入剖析；并从理论的角度对司法解释的几个热点争议问题进行研究，以加深对司法解释的了解，从而提出完善中国司法解释的法治设想。

Methods:(1) Silica column chromatography and LH-20 were used in phytochemistry study.(2) Based on the extraction ratio of arctiin, the best extraction procedure was acheived under the direction of L9(34) orthogonal experimental design. From 10 types of resins, the one with the maximal binding ability for Arctii was selected and silica-column choramatograpy was used in its seperation and purification procedure.(3) The animal diabetic experimental model in Wistar rats was established with streptozotocin and many biochemical factors were used to indicate the pharmacological effects of arctiin, including glycosylated hemoglobin, serum creatinine, seralbumin, monoxide nitrogen, glycerin trilaurate, cholesterol, HDL-ch, LDL-ch, Blood urea nitrogen, creatinine, SOD, ET, MDA, total Urine protein and albuminuria.

(1)采用硅胶柱层析、聚酰胺层析、LH-20等方法对牛蒡子的化学成分进行研究；(2)采用正交实验设计方法，以牛蒡子苷为指标，确定了牛蒡子乙醇回流提取的最佳工艺；对10种类型大孔吸附树脂进行筛选，筛选出对牛蒡子苷吸附效果最佳的树脂；采用硅胶柱层析法，对牛蒡子苷进一步分离纯化；(3)建立实验性糖尿病大鼠模型，以GLU、TC、TG、HDL-ch、LDL-ch、TB、ALB、BUN、CREA、GHbAlc、NO、SOD、ET、MDA和尿液中TB、ALB为指标，研究牛蒡子苷药理活性；(4)以差速消化法纯化Wistar大鼠的主动脉内皮细胞并进行传代培养，测定牛蒡子苷对高糖条件下RAECs活性、RAECs释放LDH、MDA和NO的变化以及RAECs表达内皮型一氧化氮合酶表达的影响。

The detection capability of single buoy is limited. To improve detection performance, we studied the detection-level fusion of several buoys based on the position and information characteristics of several airdropped buoys. On the basis of the analysis to distributed detection fusion theory, we studied the structure, rule and algorithm of the buoy signal detection-level fusion based on distributed detection.

针对单枚浮标对目标检测能力有限的问题，为了提高对目标的检测性能，根据多枚空投浮标的位置和信息特点，对多枚浮标的检测级融合进行了研究；在对分布式检测融合理论进行研究的基础上，研究了基于分布式检测的浮标信号检测级融合体系结构、融合规则、融合算法等。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。