基于前推回代法的20kV配电网的研究与应用

目前,我国城市电力负荷及负荷密度日益增长的情况和城市配电网现状表明,10kV电压等级供电暴露出许多不足,供电能力无法满足需要。采用流行的前推回代法进行配电网潮流计算,并对10kV升压为20kV电压质量进行了分析。     

面向不同设备的响应式网页设计探析

随着移动设备的逐渐普及和Web技术的发展,移动设备已逐渐超过桌面设备,成为访问互联网的最常见终端.为了实现任意设备对网页内容的完美布局,获得与设备匹配的视觉效果,需要对网页进行响应式设计.结合HTML5、CSS3带来的新特性,可以通过阻止移动浏览器自动调整页面大小、媒体查询以及运用流式布局等技术来实现响应式网页设计,更好地满足使用不同设备的用户.     

利用电导传感器测量油水两相流中含水率的研究

两相流是石油开采中始终存在的一种现象,含水率的多少直接反映了开采的经济效益,要想准确测试出这两相中的含水率,利用电导传感器进行测试已成为现在的测试热点.文章首先介绍了电导传感器测试含水率的结构和测量原理,然后通过现场试验测试试验数据,经过实验数据分析,确定测试所得的含水率,再与实际含水率对比,从而验证测试系统能够准确的测试出原油含水率.     

The development of communication apprehension: A retrospective analysis of contributory correlates

Although a considerable amount of research demonstrates the powerful effect of oral communication apprehension on social behavior, little research has explored the etiological bases for that anxiety. This research examines the role of parent/home and school variables in predicting the apprehension of college students. Results suggest that the amount of positive reinforcement for communication attempts experienced at home contributes significantly, while general parental affect, negative or punishment responses from parents, and parental competitiveness do not. The grade‐school environment and the perceived amount of error correction present in both grade school and high school were also found to have a significant effect Home and school, when taken together, accounted for significantly more of the apprehension than either one did individually although school effects predominate over home effects.     

制造机器人PLC控制系统的设计

设计了一种基于PLC的制造机器人控制系统,能够应用于制造业流水线的加工应用,提高生产效率。详细阐述了该控制系统的设计原理、组成结构和实现方案。重点研究了基于PLC控制原理的详细设计方案,给出了基于PLC控制过程的基本流程、控制系统的接口描述和控制系统中资源描述与分配方法。     

多毛细管静电雾化研究现状

介绍单毛细管静电雾化和多毛细管静电雾化特性的研究现状,并分析多孔喷油器喷雾特性的研究对多毛细管静电雾化特性的研究的借鉴意义。提出了对多毛细管静电雾化的特性进行进一步研究的主要内容。     

黄山市中小企业融资问题研究

中小企业为我国的经济增长做出的贡献是有目共睹的,但中小企业融资的融资难问题却非常突出。本文通过分析黄山市近几年中小企业融资的供求状况,并且在对黄山市中小企业融资问题进行实地调研的基础上,查找中小企业融资难的主要原因。找出影响中小企业融资需求和供给的各种制约性因素,进而在中小企业自身层面、金融机构层面、创业板和产业投资基金方面,提出了具体的政策建议。     

Modeling pollutant transport in overland flow over non-planar and non-homogenous infiltrating surfaces

Pollutant transport in overland flow over surfaces with spatially varying microtopography,roughness,and infiltration was investigated using the diffusion wave equation and transport rate-based equation.The finite volume method in space and an implicit backward difference scheme in time were employed in the numerical solution of the 2D governing equations.The developed model was first tested against an analytical solution and an experimental study involving overland flow and the associated pollutant transport,subsequently a series of numerical tests were carried out.Non-point source pollution was investigated under spatially varying microtopography,roughness,and infiltration.The simulation results showed that microtopography and roughness were the dominant factors causing significant spatial variations in solute concentration.When the spatially varying microtopography was replaced by a smooth surface,the result was an overestimation of the solute rate at the outlet of the upland.On the other hand,when the spatially varying roughness was replaced by the average roughness and spatially varying infiltration rate by the average infiltration rate,the pollutant discharge at the outlet of the upland was not significantly affected.The numerical results further showed that one cannot ignore the spatial variations of slope and roughness when investigating the local pollutant concentration distribution.     

跑步参与者涉入程度对幸福感的影响:心理资本和流畅体验的链式中介作用

整合休闲涉入理论、心理资本理论、流畅体验理论等,检验心理资本—流畅体验的链式中介效应,在此基础上构建链式中介效应模型。采用成熟量表自编问卷,对305名跑步参与者进行调查。结果显示：跑步参与者涉入程度、心理资本、流畅体验均是跑步参与者幸福感的前因变量。三者对幸福感的直接影响均达显著水平（P<0.005）,跑步参与者涉入通过心理资本和流畅体验的中介作用对幸福感产生影响,且该中介作用包含3条路径,即心理资本与流畅体验各自产生的间接效应,以及二者共同产生的链式中介效应。研究揭示了跑步参与者涉入程度与其幸福感的关系及作用机制,深化了跑步参与者涉入对参与者自身影响的研究。     

住宅小区车位权属及流转制度的立法完善

我国物权法对住宅小区车位权属及流转制度的规定过于原则,在车位的权属确定、流转方式、登记等方面存在着立法缺陷,无法满足司法实践需要,必须通过修改物权法或者制定实施细则对其做出明确规定。