The Roles of Substantive and Procedural Understanding in Open-Ended Science Investigations: Using Fuzzy Set Qualitative Comparative Analysis to Compare Two Different Tasks     

Judith Glaesser  Richard Gott  Ros Roberts  Barry Cooper 《Research in Science Education》2009,39(4):595-624

We examine the respective roles of substantive understanding (i.e., understanding of factual knowledge, concepts, laws and theories) and procedural understanding (an understanding of ideas about evidence; concepts such as reliability and validity, measurement and calibration, data collection, measurement error, the ability to interpret evidence and the like) required to carry out an open-ended science investigation. Our chosen method of analysis is Charles Ragin’s Fuzzy Set Qualitative Comparative Analysis which we introduce in the paper. Comparing the performance of undergraduate students on two investigation tasks which differ with regard to the amount of substantive content, we demonstrate that both substantive understanding and an understanding of ideas about evidence are jointly involved in carrying out such tasks competently. It might be expected that substantive knowledge is less important when carrying out an investigation with little substantive demand. However, we find that the contribution of substantive understanding and an understanding of ideas about evidence is remarkably similar for both tasks. We discuss possible reasons for our findings.

Barry CooperEmail:

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Anticipated IT infrastructure and supply chain integration capabilities for RFID and their associated deployment outcomes     

Rebecca Angeles 《International Journal of Information Management》2009

This study looks at the perceived ability of components of IT infrastructure integration and supply chain process integration to predict specific radio frequency identification (RFID) system deployment outcomes—exploration, exploitation, operational efficiency, and market knowledge creation. Data for this pilot research study was collected using a survey questionnaire administered online to members of the Council of Supply Chain Management Professionals (CSCMP). It was hypothesized that data consistency and cross-functional application integration, both elements constituting IT infrastructure integration, and information flow integration, physical flow integration, and financial flow integration, all elements constituting supply chain process integration would be positively associated with and predict the four RFID system outcomes. Multiple regression results show partial support for all four proposed hypotheses. Cross-functional application integration and financial flow integration predicted exploration, while data consistency and physical flow integration predicted exploitation. Data consistency and cross-functional application integration, on the other hand, predicted both operational efficiency and market knowledge creation. Supply chain managers planning to deploy RFID systems are alerted to the criticality of these IT infrastructure issues as they brace for a likely widespread implementation of RFID in supply chains they participate in.  相似文献   

变革背景下民营企业家创业压力源与职业倦怠的关系   总被引：1，自引：0，他引：1  

韦雪艳  王重鸣  段锦云 《软科学》2009,23(11):96-101

通过两项研究对民营企业家创业压力源和职业倦怠的结构及其二者之间的关系进行了探讨。首先对19家来自不同地区、行业的19名不同背景的民营企业家进行了半结构化访谈,其次对访谈记录进行了内容分析,在文献研究和访谈研究的基础上设计了民营企业家创业压力源问卷,对获取的预测数据和正式测量数据进行了统计分析。研究结果表明:①揭示出创业压力源八因素结构模型,包括创业卷入、知识储备、工作与家庭冲突、竞争强度、资源需求、角色管理、管理责任和声誉风险。②揭示出民营企业家职业倦怠四因素结构模型,包括枯竭、去个性化、创业成就感和创业认同感。③研究发现不同创业压力源对倦怠有不同的影响。  相似文献   

顾客一企业认同的驱动因素研究     

李惠璠  李鹏  张金成 《科学学与科学技术管理》2009,30(12)

认同研究起源于社会心理学领域,又在组织行为学范畴得到发展.鉴于服务的无形性、生产与消费的不可分割性及易逝性特征,将认同理论纳入B2C的服务情境中,构建了顾客-企业认同与企业层面、员工层面驱动因素之间的关系模型,同时考察了顾客价值与顾客满意作为中介变量的作用.研究发现,企业识别直接正向影响CCI,企业形象通过顾客满意间接正向影响顾客-企业认同,企业沟通在直接正向影响CCI的同时,还通过顾客价值间接正向影响顾客-企业认同,服务员工的顾客导向意识分别通过顾客价值和顾客满意间接正向影响顾客-企业认同.因此,服务企业的管理者应当有机地整合企业层面和员工层面的影响因素,强化顾客对企业的认同感,借以构建独特的竞争优势.  相似文献   

无线Ad Hoc网络中基于跨层设计的有效用户识别方法     

田珊  张灿 《中国科学院大学学报》2009,26(5):681-687

提出了一种同步DS-CDMA无线Ad Hoc网络中的有效用户识别方法,采用跨层设计,将MAC层SEEDEX协议中的调度信息用于物理层的帧编码和用户识别. 接收机首先判断是否存在有效用户,如存在则使用当前时隙所有可能发送数据的节点的扩频码来确定有效用户,不存在则直接丢弃该数据帧,从而减少了接收机的能量消耗. 仿真结果表明,该方法同现存的同类算法比较,减小了运算量,节省了接收机能量,改善了接收机错判概率.  相似文献   

一种EPC Gen2 RFID标签时钟校准方法     

罗恰嗣  郭立  周云超  张纲  李清 《中国科学院大学学报》2009,26(6):846-849

设计了一种对Gen2 RFID标签的振荡器频率进行校准的方法. 该方法设计了时钟校准命令; 并给出了读写器使用时钟校准命令对标签时钟频率进行逐次逼近的校准过程. 验证结果表明,带有8位校准寄存器的电路可以把时钟偏差从50%校准到0.4%以内.  相似文献   

机构学术型专利识别方法的研究进展     

李姝影  方曙 《图书情报工作》2014,58(3):124-129

指出机构学术型专利的识别是在对人名进行计算机匹配的基础上,对机构的专利产出和论文产出进行关联的识别过程,具有重要的理论意义和实践意义。综述机构学术型专利识别方法的当前研究进展,主要包括基于关键词检索、匹配列举以及关系数据库3种方法,通过分析3种方法的优势和劣势,提出识别机构学术型专利的步骤,认为建立关系数据库的方法综合了前两种方法的优势,能够大规模定期更新作者名单,并在德国大学的实证中成功实施,可为未来其他国家开展学术型专利的研究提供借鉴。  相似文献   

“走出去”战略背景下我国企业跨国并购风险的识别与控制     

潘颖  战京玲  王凯 《未来与发展》2012,35(6):110-113

我国企业跨国并购失败的原因,主要源于对跨国并购风险识别不足,以及风险防范措施的缺失。本文结合中投投资黑石、中铝收购力拓等海外并购失败案例,分析了我国企业跨国并购面临的主要风险,并基于海外并购流程,从并购前的准备阶段、并购实施过程以及并购后的整合阶段,系统提出我国企业跨国并购风险防范措施。  相似文献   

RFID technology-enabled Markov reward process for sequencing care coordination in ambulatory care: A case study     

《International Journal of Information Management》2019

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自我牺牲型领导对员工建言的影响:有调节的中介效应          下载免费PDF全文

姚楠  张亚军  周芳芳 《科研管理》2019,40(9):221-230

基于社会认同理论视角,探讨了自我牺牲性领导对员工建言的影响及其内在机制。选择贵州省12家企业员工及其领导作为研究对象,采用层级回归等方法分析295份配对样本,结果表明：自我牺牲型领导对员工建言行为有正向促进作用,领导认同中介自我牺牲型领导与员工建言之间的关系,领导虚伪感知负向调节着自我牺牲型领导与领导认同之间的关系,同时也负向调节自我牺牲型领导经由领导认同影响员工建言的间接效应。  相似文献