高职院校建筑装饰计算机辅助设计课程教学思考     

张爽 《黄冈职业技术学院学报》2010,12(3):59-62

针对高职建筑装饰专业计算机辅助设计课程教学改革与实践,对教学内容、教学特点、教学模式、教学方法与手段、课堂气氛、课程考核方式等多方面进行详细论述,特别是在教学内容、教学方法与手段、教学过程等方面进行了较深入的研究分析。  相似文献   

基于TCP/IP协议的网络通信模式研究     

孙旭  孙瑜  孙道层 《商洛学院学报》2012,26(4):24-27

在TCP/IP通信协议的基础上设计并实现了一个以OK6410开发板作为客户端、PC机作为服务端的网络通信系统,该系统利用Socket机制实现的面向连接的网络通信,可以确保数据在整个传送过程准确无误,适用于误码率要求较高的通信环境。  相似文献   

中观层面上技术标准的溢出效应分析:基于省际面板数据     

王丽君  陈韬  王益谊 《科技管理研究》2021,41(4):175-182

采用2001—2017年我国30个省(区、市)的面板数据,基于标准体系构建代表地区知识扩散和吸收能力的标准化水平评价指数,并将其纳入改进的知识生产函数,分析包括标准化在内的各要素对创新产出的影响。研究结果表明:与传统的产出形式(如地区生产总值)相比,创新产出更加依赖于知识存量,同时受到区域知识扩散和吸收能力的影响;知识存量和区域标准化水平对创新产出存在溢出效应,规模报酬递减;在创新知识产出过程中,研发资本、研发人员、知识存量、标准化水平的影响具有显著的区域差异性。最后建议我国各地区基于不同的投入要素结构制定不同的创新激励政策,提高研发资本和研发人员对创新产出的贡献、知识存量对创新产出的规模报酬、区域对创新产出的消化和吸收能力以及标准化水平对创新产出的规模报酬。  相似文献   

The influence of dovetailed cross beams on the dimensional stability of a panel painting from the Middle Ages     

Ottaviano Allegretti  Marco Fioravanti  Paolo Dionisi-Vici  Luca Uzielli 《文物保护研究》2014,59(4):233-240

This paper describes experiments carried out to determine the influence of dovetailed cross beams on the dimensional stability of a panel painting from the Middle Ages. Besides a serious cup (transverse distortion), the panel featured an unusual longitudinal distortion, a bow, mostly originating from bending in the proximity of the middle cross beam. Because of its localized occurrence, bending appeared to be caused by the crossbeam somehow pushing on the walls of its channel. Thanks to the cooperation offered by the curator and the restorer, some non-damaging tests were performed to measure the distortions of the panel, with and without the cross beams, after conditioning it in different climates. Processing and analysis of the measurement results demonstrated that the bow of the panel increases as the wood moisture content decreases. This led to the conclusion that the bow is actually produced by forces exerted by the cross beam along the panel's length, according to a mechanism named thrust transformation. By this mechanism the cross beam partly transforms the panel's tendency towards cupping, into a bow distortion.  相似文献   

Relationship between educational indicators and research outcomes in a panel of top twenty nations: Windows of opportunity     

《Journal of Informetrics》2014,8(2):349-361

The objective of the study is to examine the empirical relationship between educational indicators and research outcomes in top twenty nations of the World in terms of number of publications, citations and patents. The literature on higher education is useful in expressing the general and visible characteristics of a research domain, but cannot reveal the possible interaction between educational reforms and research outcomes. In order to overcome this limitation, the current study employed a panel cointegration technique to evaluate the long-run relationship between educational indicators and research productivity over a period of 1980–2011. The results reveal that educational indicators act as an important driver to increase research productivity in the panel of selected countries. The most promising educational factors i.e., higher education enrolment increases GDP and number of publications by 0.898% and 1.425%, respectively. Similarly, higher education expenditures per student increases research and development (R&D) expenditures, number of citations and number of patents by 1.128%, 0.968% and 0.714%, respectively. Finally, increasing school-life expectancy contributed to researchers in R&D by 0.401%. The study concludes that there is a window of opportunity to equip the youth with necessary skills to ensure a sustainable future for the nations. Higher education empowers and enables students to compete in a highly competitive and interconnected world through research and innovations, which are the drivers of new ideas, businesses and economic growth.  相似文献   

我国不同区域房地产财富效应差异     

张乐 《宜宾师范高等专科学校学报》2014,(5):46-51

根据经济发展基本面及房地产市场的发展水平,将我国大中城市划分为一线、二线及三线市场,利用2001—2010年间的相关数据,采用Panel Data模型分析了不同类型城市的房地产的财富效应。结果表明,从全国范围来看,房地产存在一定的正向财富效应。但一、二线城市,房地产财富效应显著为负,二线城市更为突出,三线城市显著为正。  相似文献   

痢疾时空发病特征的统计分析与预测简     

郑琰  高强  董平 《山东教育学院学报》2014,(1):92-101

本文以河南省痢疾数据为例,通过大量直观的图表与统计分析手段相结合的方式,分析了痢疾的时空发病特征,并得出了痢疾的时空发病特征是有气象因素的时空分布特点所决定的结论,并进行相关分析得到了影响痢疾发病的主要影响因素.对传统的疾病估计预测方法进行总结,进而提出了趋势分段法并归纳了常见流行病的发展趋势阶段及相应处理方法,以郑州为例证实了趋势分段法相比传统方法具有一定优势.对于各地市数据,使用面板回归方法分析其共性之处,并综合讨论了以上模型的应用.  相似文献   

中国大中城市房价与工资变动关系的计量研究     

王芸 《襄樊学院学报》2014,35(9):44-48

为了研究房价与工资的变动关系,选取中国35个大中城市并分成北部、中南、东部、西部四个区域,建立不同区域的面板数据模型,通过单位根检验、协整检验、建立动态面板固定效应变截距模型.研究表明房价增长速度与工资增长速度存在着正向的增长关系,工资增长速度高于房价增长速度.建议政府在制定收入政策和住房调控政策时,应结合不同区域的情况,制定合适的住房调控政策;提高居民收入水平,缩小不同地区之间的工资差距.  相似文献   

中国城镇化水平与GDP的门槛效应关系     

林立达 《襄樊学院学报》2014,35(10):34-38

通过构建城镇化水平、GDP、外商直接投资和金融发展的指标体系,利用我国2000—2012年的省际面板数据构建面板门限模型。实证结果表明,城镇化对GDP增长的促进作用,中部地区和西部地区都高于全国水平,而东部地区低于全国水平;外商直接投资对于GDP增长的促进作用。西部地区最大,东部和中部地区作用较小;金融发展水平对于GDP增长的促进作用,东部地区要高于全国水平,但中部和西部地区不显著;城镇化与GDP关系对于外商直接投资和金融发展水平的门槛效应,大致呈现倒“U”型。  相似文献   

From mother to daughter: changes in intergenerational educational and occupational mobility in Germany     

Alessandra Minello  Hans-Peter Blossfeld 《International Studies in Sociology of Education》2014,24(1):65-84

Recent decades have seen a dramatic expansion in the educational attainment and occupational opportunities of German women. Both the educational and occupational positions of the mothers and those of their daughters are continuously changing across cohorts. Our study aims to detect the probability of daughters to experience maternal-line intergenerational educational and occupational mobility. Using new data from the National Educational Panel Study of adult cohorts, we analyse successive cohorts of German women born between 1944 and 1984. We demonstrate that the relation between mothers’ and daughters’ educational and occupational career has changed over time. Maternal-line female mobility has decreased over cohorts. Our results also reveal that the relationship between educational careers and female job mobility has changed. The tertiary level of education has become more relevant across cohorts in preventing downward intergenerational mobility and it has become a prerequisite for taking part in the completion for upward intergenerational mobility.  相似文献