The effects of technological turbulence and breadth on supply chain technology acceptance and adoption

The current empirical study examines the intention to use and subsequent implementation of a supply chain technology. Specifically, the authors extend the technology acceptance model (TAM) to incorporate the state of the technology environment (technological turbulence) and the extent to which other supply chain technologies have already been adopted by the firm (technological breadth). A series of seemingly unrelated regressions (SUR) were used to analyze survey data from 195 respondents. The results show that in technologically turbulent environments, the relationships between the firm's perceived usefulness and ease of use and the firm's intention to use a supply chain technology are stronger. The study also finds that the relationship between the firm's intention to use a supply chain technology and the implementation of the technology is weaker in firms with greater technological breadth.     

高校科普出版在国家科普体系中的地位和作用

高校出版媒体依托高校人才聚集与专业深度等优势,是出版科普读物最有条件的组织,高校出版媒体应发挥独特优势,成为科普读物出版基地和高校科普常态化的重要载体,进而建立高校科普长效机制。     

数字化能否调节产品创新与服务转型的交互效应——基于A股制造业上市公司的实证研究

基于2012—2019年沪深两市668家A股制造业上市企业面板数据,实证检验产品创新与服务转型对企业绩效的交互效应,利用Python文本挖掘技术构建数字化指标,研究数字化对两者交互效应的调节作用。结果表明：产品创新和服务转型两者间的交互效应与制造业服务化水平有关,随着服务化水平提高,交互效应表现为U型关系;数字技术能够显著促进产品创新与服务转型协同发展,使两者交互的U型曲线拐点向左移动。进一步分析表明,大型民营企业引进数字技术对两者交互效应的调节作用更为显著。结论有利于促进制造企业产品创新与服务转型协同,对于实现高质量发展具有重要现实意义。     

光电子技术发展态势分析

对2000-2005年度<维普数据库>收录的我国光电子技术领域的论文进行了统计与分析,从一个侧面探讨了我国光电子技术发展的现状与趋势.从中发现,我国光电子技术领域近年来在经历短暂的低迷后.近期呈现恢复性增长;激光及全息枝术是光电子技术研究中的重点;光电子技术理论发展迅速,为该领域的可持续发展奠定了坚实的基础;显示技术有待重视和加强.     

基于指数随机图模型的专利技术扩散机制实证研究

网络嵌入视角下专利技术扩散路径间存在相关性,但这种网络内生性影响并未在已有研究中得到足够重视。将扩散因素归纳为：专利价值、专利保护、多维同配、结构嵌入,从扩散网络内生、外生因素两个方面构建分析模型,并以石墨烯领域为例,采用指数随机图模型,开展实证研究。实证结果说明：专利价值、技术、地理、组织层面同配性、闭合三角结构嵌入均正向促进专利技术扩散,而专利保护强度反向抑制技术扩散。值得注意的是,专利技术扩散存在强烈的结构嵌入倾向,融合网络内、外生因素的模型能够更好地捕捉专利技术扩散机制。     

企业家背景特征对技术创业企业绩效影响的实证研究

以商业模式创新作为中介变量,构建了企业家背景特征与技术创业企业绩效之间关系的理论模型。基于中小板和创业板125家上市公司的数据,采用多元回归分析方法对研究假设进行了验证。结果表明：企业家背景特征中的教育水平、专业背景、职能背景均对技术创业企业绩效具有正向影响;商业模式创新在企业家教育水平、专业背景和职能背景与技术创业企业绩效之间具有部分中介作用。     

复杂技术网络化布局三维风险及其规避策略研究

复杂技术如同一个多元技术网络系统,其网络化布局存在潜在的横向风险、纵向风险及结构风险。对应三维度风险分析,从网络合作规则设计、技术网络治理与技术网络资金支撑体系构建以及产权制度创新3个方面,提出了应对复杂技术网络化布局风险的规避策略与制度设计,对了解我国复杂技术创新网络以及加强网络风险治理具有一定的借鉴意义。     

虚拟仪器技术对知识创造的影响研究

仪器作为现代科学研究的核心组成部分,在很大程度上决定了科学知识的产出。虚拟仪器技术对知识创造产生了深远影响。“软件就是仪器”的理念使得传统仪器、测量观念以及仪器作为科技黑箱的内涵和功能发生了质的变化。虚拟仪器在集成大量编码知识的同时更多地集成了主体的隐性知识,虚拟仪器技术通过对主体知识体系的重塑影响了知识创造。主体只有通过长时间、复杂的学习和使用过程才能充分发挥虚拟仪器技术在知识创造中的优势,实现编码知识和隐性知识的共同增长。     

Sources of fluctuations in hours worked for Canada,Germany, Japan and the U.S.: a sign restriction VAR approach

This study empirically examines the sources of fluctuations in hours worked in Canada, Germany, Japan and the U.S. It is particularly motivated by Galí’s (1999) VAR study, which demonstrates that a positive technology shock reduces hours worked, at least in the short run. However, in the present study, a technology shock is identified without recourse to Galí’s long-run restriction, which has been subject to active controversy. Furthermore, this study uncovers other important sources of fluctuations in hours worked to reflect the concern, raised by numerous studies, that technology shocks leave most variations in hours worked unexplained. Specifically, there are six shocks underlying our model, and they are identified using a set of sign restrictions. The empirical results confirm that in all four countries, a positive technology shock significantly reduces hours worked. This technology shock, along with labor supply and demand shocks, accounts for most of the short-term variations in hours worked. As the forecasting horizon increases, technology and demand shocks become less important, whereas labor supply shocks contribute to explaining the bulk of long-run variations in hours worked. Finally, the empirical relevance of Galí’s long-run identification restriction is tested and the results are related to those obtained using the sign restriction model.