Leveraging middle managers’ brokerage for corporate entrepreneurship: The role of multilevel social capital configurations

Building on recent efforts to bring a socio-political perspective to social capital research, we develop and test a multilevel framework that explains why middle managers who occupy brokerage positions differ in their ability and willingness to engage in entrepreneurial behavior. More specifically, we provide a contextualized understanding of the links among middle managers' brokerage, their political-support ties, and their personal initiative. Results derived from data on 383 middle managers and 72 top managers in 34 business units indicate that political-support ties with top managers strengthen the relationship between middle managers’ brokerage and personal initiative. However, this positive effect depends on the social capital resources available in the focal business unit. It is attenuated in business units with a supportive and trusting social context and amplified in business units with high levels of internal connectedness. By uncovering these incompatibilities and complementarities, our study demonstrates the value of accounting for different social capital configurations and the interplay of their inherent social capital resources when examining the effects of brokerage on corporate entrepreneurship.     

基于CNKI的国内医学用途英语教学研究进展分析（2011—2020）

对近十年来国内医学用途英语教学研究进展进行了整体回顾和概要总结。利用中国知网CNKI文献分析工具,对2011至2020年发表的医学用途英语学术论文进行检索统计,从发文量、文献来源、作者及机构分布、研究主题、研究视角等维度进行进展分析。研究发现,知网共发表相关主题论文342篇,其中核心期刊论文26篇,主要从医学用途英语所面临的挑战、需求分析、教学模式、教学改革、教材编写以及医学用途英语教师转型发展等视角展开讨论。研究认为未来的医学用途英语教学研究需要走“外语+医学”跨学科特色发展路径,以培养更多面向新时代的复合型医学人才。     

收费公路运营效率测度及时空分异研究

收费公路行业内部债务治理与外部减税降费均要求收费公路运营降本增效。为了探析收费公路运营效率水平及其空间分布格局,使用SBM模型测度了2014—2020年29个省份收费公路运营效率,进而采用泰尔指数和Moran's I指数分析了其时空分异特征。研究认为:收费公路运营存在着效率较低且在时间维度上没有明显增长的趋势,在空间上存在发展不平衡问题,收费公路运营效率的区域差异主要来源于区域内部差异,区域内差异的贡献率平均达到81.578%; 收费公路运营效率具有空间正相关性,呈现出显著的“高-高”集聚和“低-低”集聚的空间特征,运营效率较高的省份对相邻省份具有正向溢出效应。研究表明,各省针对相邻省份或最近省份的运营效率现状,结合自身的比较优势探索产业升级或者物流发展模式,充分发挥相邻省份的经济发展和产业集聚对本省收费公路运营的辐射带动作用,推动建立起收费公路跨区域合作运营机制。     

一类二阶中立型时滞差分方程的振动定理

研究了一类具有变系数的二阶中立型时滞差分方程的振动性,得到了该类方程振动及差分算子△振动的一个充分条件.     

常系数齐次线性微分方程组与其相应的差分方程组之间的联系

给出了求解常系数线性齐次微分方程组和常系数线性齐次差分方程组的一个方法,指出了这两种方程组之间存在的一个有趣关系．     

宏观连续交通流数值模拟

应用交通流宏观连续模型,模拟上下游信号灯作异步周期变化的协调信号灯路段的交通流动,经数值计算比较,选择改进Ｍｕｒｍａｎ格式求解．结果表明：改进Ｍｕｒｍａｎ格式能准确捕捉交通流中无振荡“激波”位置．     

Professor mom: Woman's work in a man's world

This essay identifies parallels between the traits assigned to gender work roles and the teaching/research division of labor at research universities. The character and definition of undergraduate teaching at research universities is very similar to what has often been described as women's work.     

吸收能力、研发合作创新激励与补贴政策

本文在前人的研究基础上建立了一个具有吸收能力的非合作研究与发展博弈模型,比较了有和没有吸收能力情况下的R&D投资影响,结果表明有吸收能力的企业R&D投资要更高,接着探讨了产品替代与互补关系下的技术溢出选择对产业的影响和社会最优选择的R&D投资水平及其补贴激励政策。     

The efficacy of using judgmental versus quantitative forecasting methods in practice

In an era where forecasts drive entire supply chains forecasting is seen as an increasingly critical organizational capability. However, business forecasting continues to rely on judgmental methods despite large advancements in information technology and quantitative method capability, prompting calls for research to help understand the reasons behind this practice. Our study is designed to contribute to this knowledge by profiling differences between firms identified as primary users of either judgmental or quantitative forecasting methods. Relying on survey data from 240 firms we statistically analyzed differences between these categories of users based on a range of organizational and forecasting issues. Our study finds large differences in forecast error rates between the two groups, with users of quantitative methods significantly outperforming users of judgmental methods. The former are found to be equally prevalent regardless of industry, firm size, and product positioning strategy, documenting the benefits of quantitative method use in a variety of settings. By contrast, the latter are found to have significantly lower access to quantifiable data and to use information and technology to a lesser degree.     

基础研究学科发展的宏观知识挖掘

本文提出了一种学科发展分析的宏观知识挖掘思路和方法.从整体上、宏观上对蕴含于基础研究项目建议书(Proposal)中的知识进行挖掘,并在挖掘的基础之上对基础研究的学科发展趋势、特点,学科领域的分化、融合以及交叉等进行分析,并从学科整体、学科领域和项目等三个层面对基础研究的科研管理工作提供基于知识的决策支持.