信息综合管理系统控制平台的构建   总被引：2，自引：0，他引：2  

刘春艳  宋辉  郝立柱 《现代图书情报技术》2005,21(9):17-23

阐述了平台系统的基本组成；论述了平台系统核心技术的数学抽象；提出了LB(Line Basic)语言及面向平台的程序设计思想；介绍了平台语言的设计原理；描述了LB语言的通用指令集；给出了平台系统的五种权限管理策略；通过指令效率分析优化了平台系统，从而通过LB语言将显示模式及众多的内部函数组成一个有机的整体，使平台系统成为集开发与应用为一体的大型软件系统。  相似文献   

中原经济区城镇居民消费间接碳排放时空格局及其影响因素     

史琴琴  鲁丰先  陈海  张丽君  武荣伟  梁小英 《资源科学》2018,40(6):1297-1306

从消费视角研究城镇居民消费间接碳排放的历史增长、空间分异规律及影响因素,对发展低碳城市和居民合理消费方式的形成具有重要的意义。本文以中原经济区为例,运用投入产出法测算2002—2014年城镇居民消费间接碳排放,通过空间自相关和空间面板模型分析其空间关联特征及影响因素,得到以下结论：①2002—2014年,城镇居民消费间接碳排放呈波动上升的趋势,“衣、食、住”等生存型消费碳排放增长速度较快,“交通、教育娱乐、医疗保健”等发展型消费碳排放增长速度较慢;②从空间关联格局来看,城镇居民消费人均碳排放以HH区和LL区的空间正相关类型为主;③空间杜宾模型估计结果表明,居民收入水平、产业结构和消费结构是影响该区城镇居民消费间接碳排放的主要因素,另外,消费结构和消费意识两个因素具有明显的空间溢出效应。  相似文献   

Comparing Methods for Addressing Missingness in Longitudinal Modeling of Panel Data     

Daniel Y. Lee  Jeffrey R. Harring  Laura M. Stapleton 《Journal of Experimental Education》2013,81(4):596-615

Respondent attrition is a common problem in national longitudinal panel surveys. To make full use of the data, weights are provided to account for attrition. Weight adjustments are based on sampling design information and data from the base year; information from subsequent waves is typically not utilized. Alternative methods to address bias from nonresponse are full information maximum likelihood (FIML) or multiple imputation (MI). The effects on bias of growth parameter estimates from using these methods are compared via a simulation study. The results indicate that caution needs to be taken when utilizing panel weights when there is missing data, and to consider methods like FIML and MI, which are not as susceptible to the omission of important auxiliary variables.  相似文献   

我国医药上市公司研发资金投入强度影响因素的实证研究——基于A股上市公司面板数据     

杨慧  宫妍  陈玉文 《科技管理研究》2017,(16)

基于2011—2015年我国医药上市公司年报数据,运用STATA 14.0进行面板回归分析,实证分析资本结构、企业规模、股权结构、研发人员投入、研发知识产出等因素对医药上市公司研发资金投入强度的影响,为提升医药上市公司研发投入水平提供参考。结果显示,企业规模、股权结构中股权制衡度、研发人员投入、研发知识产出均与医药上市公司研发资金投入强度呈显著正相关关系,资本结构、股权结构中股权集中度均与医药上市公司研发资金投入强度无显著相关关系。通过适当的扩大企业规模、增加研发人员投入、完善专利保护制度,促进研发成果高效率转化、合理分配股权结构等手段提高我国医药上市公司研发资金投入水平。  相似文献   

环境规制的节水效应分析——基于正式环境规制与非正式环境规制的视角     

尹庆民  李田田 《科技管理研究》2019,39(8)

为从根本缓解水资源对工业发展的束缚,反思现有环境规制政策能否有效实现节水效应。基于脱钩测度模型和面板门槛模型,分别验证正式环境规制与工业用水以及非正式环境规制与工业用水的关系,进一步引入正式与非正式环境规制的交互项进行分析。结果表明:环境规制与工业用水量处于从“震荡波动”到“持续脱钩”的状态,工业用水量随着环境规制的变化出现平稳或者减少的趋势。正式和非正式环境规制与工业用水量之间都呈倒U型曲线关系,用水库兹涅茨曲线存在。此外,正式环境规制与非正式环境规制之间存在双向传导路径,相互促进对方对工业用水的作用效果。因此,政府需要强化对非正式环境规制的重视,增强环境规制工具的节水效应,促进工业企业的转型升级。  相似文献   

金融发展影响科技创新的实证研究     

罗嘉雯  陈浪南 《中国科技论坛》2013,(8)

本文通过构建面板向量自回归模型,从整体角度和企业角度检验了金融开放变量、金融规模变量和金融效率变量对科技投入和科技创新的影响,并分离出珠三角地区数据做进一步分析.实证结果表明:金融发展变量对科技创新变量有着显著的正效应.同时,本文发现金融发展可以促进政府和企业投入更多的科技经费,科技投入和科技创新之间存在良性的互相促进关系.  相似文献   

Resource constraints as triggers of radical innovation: Longitudinal evidence from the manufacturing sector     

Marcus Matthias Keupp  Oliver Gassmann 《Research Policy》2013

Despite the significant role of radical innovation as a driver of firm growth and performance, the consequences of resource constraints for radical innovation outcomes remain unknown. Our paper addresses this gap. We combine arguments from entrepreneurship theory and the theory of recombinative innovation to construct an overarching theoretical framework that argues why resource constraints can promote, rather than impede, radical innovation. We then build hypotheses on two specific resource constraints, knowledge and financial, and test these by a lagged-variable random-effects Tobit model with longitudinal data from an exceptionally large and detailed innovation survey. Controlling for absorptive capacity, firm age, and firm growth, we find full support for the hypothesis that knowledge constraints spur radical innovation and partial support for the hypothesis that financial constraints spur radical innovation. We discuss the theoretical significance of these findings and point to managerial implications and paths for future research.  相似文献   

Paddy Walsh,Education and Meaning: Philosophy in Practice     

《Educational Philosophy and Theory》2013,45(1):87-89

Abstract

This article examines the impact of the reading assessment, DIBELS (Dynamic Indicators of Basic Early Literacy Skills), on literacy education through the Habermasian lens. It argues that DIBELS, along with other systemic forces, has surged beyond its domain as a mere assessment and colonized the lifeworld of literacy education by distorting the meaning of the teaching and learning of literacy.This article calls for a critical reflection on the systemized practices in literacy education and for a return to a lifeworld where literacy is considered more than a testable skill.  相似文献   

The implementation of the Bologna process     

Juha Kettunen  Mauri Kantola 《Tertiary Education and Management》2013,19(3):257-267

Abstract

This study identifies the responsibilities of the bodies and institutions involved in the implementation of the Bologna Process. They include the levels of Europe, nations, higher education institutions, departments, degree programmes, teachers and students. The future planning is analysed using the Balanced Scorecard approach designed for the communication and implementation of the strategy. The approach is used to analyse the objectives of European education policy from the different perspectives. Strategic planning and quality assurance are most efficient when they are transformed into action at the closest possible point to teaching and learning.  相似文献   

高等特殊教育均衡发展探析     

刘建岭 《教育科学》2012,28(1):66-70

经过近30年的发展,中国高等特殊教育取得了长足进步,招生人数以及在校学生数逐年增长,高等特殊教育院校已发展到33所。但是,中国的高等特殊教育发展仍面临着严重的区域失衡问题,东部地区在学校数量、师资力量以及经费投入等方面都明显优于中西部地区。新形势下,应该在教育公平理念指导下,均衡发展中国的高等特殊教育。  相似文献