The Exploration of New Jersey Urban Enterprise Zone in the 1980’s and 1990’s

摘要 最早出现于1978年的“企业区”概念，其最早的思想渊源可归于英国著名的城市规划学者彼得•霍尔(PeterHall)，主要核心内涵是指在中心城市衰败贫困地区划定特定的地理范围，在此特定区域内实行财政赋税等优惠政策并且放松政府管制，以此吸引企业的投资，鼓励私人资本参与城市的开发与发展，试图挽救中心城市面临的衰败凋敝，最终推动中心城市经济复兴。 企业区思想根源于英国，70年代末在英国受到保守党人的支持并付诸实践。后随着企业区思想的跨洋传播，美国得以接受企业区思想并使其演变发展，同时在演变过程中呈现出一系列特点；英国源起，美国适应。在企业区思想传播的影响下，1983年美国新泽...Abstract The concept of enterprise zone first appeared in 1978.its earliest thought origin can be attributed to city-planning scholar peter hall. The major core connotation is that specific geographic areas are designated in central cities distressed areas, fiscal taxation incentives and regulatory relief are provided for these zones in order to attract the investment of the enterprise, encou...学位：历史学硕士院系专业：人文学院_世界史学号：1032011115215

城乡居民休闲方式的差异及其影响因素

本研究基于2015年中国综合社会调查数据,探讨了城乡居民休闲方式的基本现状、主要差异及其影响因素。研究结果显示,城乡居民的休闲主要存在娱乐性休闲、品味性休闲和交际性休闲三种方式,且体现出明显的城乡差异——城市居民参加娱乐性休闲活动和交际性休闲活动的频率均高于农村居民,但其参加品味性休闲活动的频率则要显著低于农村居民。城乡居民在经济状况、文化程度、闲暇资源等方面的分化,是导致其休闲方式差异的重要原因。国家社科基金重点项目“城乡居民健康不平等的社会学研究”(14ASH007)的阶段性成

主观绩效、社会信任与农村居民对乡镇政府信任

在我国政治信任结构存在典型的\"央强地弱\"的差序性样态背景下,本文使用\"协商民主与选举民主调查\"数据对农村居民对乡镇政府信任的影响因素进行考察。以主观绩效和社会信任作为主要预测变量,以居民对乡镇政府的信任程度作为因变量进行回归分析,分析结果表明:主观绩效和社会信任对乡镇政府的政治信任均存在显著的正向影响,且主观绩效的影响大于社会信任;而对于社会信任来说,普遍信任因子对乡镇政府政治信任的影响力要大于特殊信任。这些发现显示,目前乡镇政府提高民众对治理绩效的评价是获得政治信任的主要方式,但营造和谐互信的社会氛围也有助于提高民众的政治信任。国家社会科学基金重点项目“警察信任与和谐警民关系的构建”(17ASH005

社会资本、身心健康与老年人主观幸福感

基于CGSS2012年的数据,考察了社会资本、身心健康对老年人主观幸福感的影响。逻辑斯蒂回归分析表明,身体健康和心理健康对老年人的主观幸福感影响显著。在社会资本因子中,社会信任对老年人的主观幸福感影响显著,同时公共事务讨论因子对老年人主观幸福感的影响大于公共事务参与因子

Determination of Andrographolide and Dehydroandrographolide in Andrographis paniculata Nees Materials and Related Patent Medicines by Reversed-Phase High Performance Liquid Chromatography

发展了穿心莲药材及其中成药中两种主要成分穿心莲内酯和脱水穿心莲内酯的反相高效液相色谱测定方法。采用甲醇振荡提取法进行样品前处理 ,在以乙腈 水为流动相作梯度洗脱、ODS柱、检测波长为 2 2 5nm的条件下 ,穿心莲内酯和脱水穿心莲内酯在 1 5min内可达到基线分离。两种内酯在 1 0mg/L～ 1 0 0mg/L时其浓度与峰面积成良好的线性关系 ,加标回收率为 96 %～ 1 0 4 %。该法适用于穿心莲药材及其制剂的质量分析检验A simple and accurate method for the determination of andrographolide and dehydroandrographolide in andrographis paniculata Nees materials and patent medicines with high performance liquid chromatography (HPLC) has been developed. The two components were extracted from powdered samples by shaking with methanol. The resultant extracts were separated within 15 min on a BECKMAN C 18 column (4 6 mm i d ×250 mm, 5 μm) and with a gradient elution of acetonitrile water at a flow rate of 0 5 mL/min . The detection wavelength was 225 nm and the injection volume was 20 μL. In gradient elution program the volume fraction of acetonitrile in mobile phase was as follows: 0 min-1 min, 40%; 1 min-5 min, 40%-50%; 5 min-15 min, 50%-70%. Both andrographolide and dehydroandrographolide have good linearity in the range of 10 mg/L to 100 mg/L with the correlation coefficients of 0 997?6 and 0 998?6 respectively. This method has been successfully applied for the analysis of andrographis paniculata Nees materials and related patent medicines.科技部中药现代化重中之重项目( 99 92 9 0 213);; 福建省科技部中药质量控制重点项目 (2 0 0 0F0 0 1)

Design and thermal analysis of high performance MEMS capacitive pressure sensor

为了进一步提高接触式电容压力传感器的性能,设计了一种高性能双凹槽结构的接触式电容压力传感器,并对该传感器在高温环境中的总体性能进行了分析。推导了热传导和热弹性理论,并对影响传感器热分析的各个因素与温度的依赖关系进行了描述;在整个分析过程中,使用AnSyS软件并结合有限元方法对全尺寸传感器的热效应进行模拟。结果表明,在接触工作状态双凹槽接触式电容压力传感器的温度对输入(压力)-输出(电容)特性的影响是线性的,且线性范围内初始压力随温度的升高而降低;当温度载荷为550 k时,双凹槽结构的灵敏度为1.21x10-6Pf/PA,比传统单凹槽的0.8x10-6Pf/PA高出50%,表明该压力传感器有着非常优异的高温特性。To improve the high temperature properties of touch mode capacitive pressure sensors,a Double-cave Touch Mode Capacitive Pressure Sensor(DTMCPS) is proposed and its overall performance in high temperature environment is analyzed significantly.Firstly,the theories of heat transfer and thermo-elasticity are deduced,and effects of many temperature dependence factors on thermal analysis of this sensor are described.Then,Finite Element Method and ANSYS software are used to simulate the thermal effect of the full dimension sensor during this analysis.The results indicate that the influence of temperature on the input(pressure load) and output(capacitance) characteristics is linear in a touch operation state of this DTMCPS,and its initial pressure of linear range reduces with temperature increasing.Furthermore,the sensitivity of double-cave structure sensor is 1.21×10-6 pF/Pa at 550 K,which has been 50% up on 0.8×10-6 pF/Pa of the traditional single-cave structure.These results show that this sensor has excellent high-temperature performance.国防军工科研资助项目(No.XDTH2009232A

Research and Simulation of Combinatorial Calculation of Combined Balance

分析了组合秤的基本结构,详细阐述了组合秤的两种不同工作原理。进行了基于VISuAl bASIC的组合计算仿真程序设计,对组合秤不同组合计算模型进行了仿真,并对仿真结果进行了分析。The basic structure and working principle of combined balance was introduced and analyzed.The simulation program of combinatorial calculation was programmed with Visual Basic; simulation of different combinatorial calculation model of combined balance was carried out; and the simulation result was analyzed

Analysis of the Festo CLR Cylinder Performance

本文对Clr气缸工作性能的实验研究,目的是为了满足数控机床气动随行夹具中气缸的旋转夹紧要求。利用PlC控制器、气阀、气缸、传感器等元器件搭建实验平台。对主要实验步骤进行详细分析,通过实验论证fESTO Clr直线摆动夹紧气缸完全满足气动随行夹具工作要求。In this paper,we introduced an experiment to study the performance of pneumatic cylinder.In order to meet the requirements of the line/rotation clamping cylinder in CNC machine tools pneumatic clamp accompanied system.Using PLC controller,valves,cylinders,sensors and other components to build an experimental platform,the main experimental steps have been analyzed in details.Through the different kinds of experimental data demonstrating the Festo CLR line/rotation clamping cylinder is fit for the requirement of practical work

The application and research of the aircraft flexible fixture

主要研究气动、液压与电传技术在航空制造业中装配工艺中的应用。对研制出数控机床气动柔性夹紧系统,及其在飞机上零件加工上的应用进行了详细论述,包括柔性系统的机构组成、工作原理及PlC控制系统。该技术的突破为我国飞机数字化加工装配提供了参考价值,并将促进航空制造业的跨越式发展。The application of the pneumatic,hydraulic and power transmission for assembly process and equipment in aviation manufacturing industry is study.A novel type of CNC Aircraft Flexible Fixture machine system has been made out,and applied in manufacturing the aircraft parts.The system is including in architecture of the composition,working theory,PLC control system.It has a great signification of the manufacturing technology for aircraft digital processing,manufacturing and assembling,and promoting the developing of aircraft manufacturing

Influence of Mother-Child Attachment and IQ on Children's Sociometric Status

目的探讨幼儿的社交地位及其与依恋、智力等因素的关系。方法选取62位4-6岁的幼儿以及他们的母亲,采用同伴提名法和中国比内智力测验评价社交地位和智商,采用中国版依恋分类卡片测量母子依恋关系。结果幼儿的母子依恋关系对社交地位具有显著影响,母子安全依恋系数高的幼儿在同伴中更受欢迎(对于一般可接受性、积极提名和消极提名的回归系数分别为0.5,0.3和-0.4);智力对同伴的一般可接受性具有显著影响(回归系数为0.2),与母亲受教育程度有关(回归系数为0.5);4-5岁女童的智商显著高于男童(115.5±10.5/109.1±10.2,t=2.3,P<0.05),并且比男童更受同伴欢迎(0.3±1/-0.3±0.9,t=2.5,P<0.05)。结论幼儿的母子依恋关系、智商以及性别因素对其社交地位具有显著影响,而智商是性别、家庭环境因素影响幼儿社交地位的中介变量