Exploring professionals' motivation to lead: a cross-level study in the healthcare sector

The extant leadership research has paid increasing attention to the concept of motivation to lead (MTL) as an individual construct that strongly affects leadership processes and behaviors. However, despite its importance, scant knowledge is available about how individual characteristics and organizational structural features interact in influencing MTL in professional-based organizations. This article contributes to this line of research by adopting a multilevel perspective to study the MTL among individual professionals in the healthcare sector. We collected data from a sample of 791 physicians nested in 44 departments belonging to 27 hospitals. Using the hierarchical linear model, we tested the impact of individual and organizational variables on the motivation of physicians to engage in managerial positions. Our findings demonstrate that the physicians' MTL was positively associated with their individual self-efficacy. Departmental decentralization interacted with this self-efficacy, such that the effect of self-efficacy on the MTL was significantly lower when decentralization was high. We discuss the implications of these findings for human resource management and organizational (re)design within professional organizations.     

How do interorganizational and interpersonal networks affect a firm's strategic adaptive capability in a transition economy?

This paper examines the effects of a firm's interorganizational network characteristics and a CEO's interpersonal network ties on a firm's strategic adaptive capability in a transition economy. Using a unique survey dataset of 250 Chinese firms, the paper focuses on the compositional diversity of a firm's interorganizational network and the structural holes in a CEO's interpersonal network. The results show that an interorganizational network that is diverse in composition and an interpersonal network that is rich in structural holes have significantly positive effects on a firm's strategic adaptive capability in China's transition economy. However, a negative interaction effect occurs between interorganizational network diversity and interpersonal network structural holes. The results suggest that managers simultaneously consider both the individual and joint effects of interorganizational and interpersonal network characteristics when developing firm strategies.     

认知无线电中基于循环统计量的频谱空穴检测方法

频谱空穴检测是认知无线电研究的关键技术.针对授权用户信号的循环平稳特性以及它和干扰信号、噪声的循环独立特性,提出了一种基于循环统计量的频谱空穴检测方案.构造了频谱空穴检测的二元假设检验模型,推导了相应的检验统计量.仿真结果表明,在低信噪比情况下,相比传统的能量检测法,该方法具有较优的检测性能,同时能有效地区分授权用户信号与同频干扰信号.     

膜法分离纯化葛根素的实验研究

生产周期的长短在一定程度上决定了企业产品的成败,而生产周期的缩短是一个持续改善的过程,最理想的状况是"单件流"的生产方式。依据笔者多年实施丰田式生产方式的经验,结合丰田与某供应商之间生产周期缩短的实例,详细阐述了生产周期缩短的途径和意义,以期为国内制造或服务类企业提供一种高效的生产经营模式,增强其竞争力。     

董事会内部非正式网络对企业创新的影响 ——基于董事会外部网络的调节作用

创新既是我国经济实现高质量发展的重要动力,也是企业长期获取竞争优势的关键。 董事会作为制定企业战略的核心,通过对创新资源的获取与运用影响企业创新水平。 基于社会网络理论,从董事会内部网络和外部网络两方面,探析了董事会内部非正式网络对企业创新的影响以及董事会外部网络的调节效应。通过 2013—2021 沪深 A 股上市公司数据,研究发现:基于“七同”关系属性形成的董事会内部非正式网络可以显著促进企业创新;董事会外部网络结构洞与网络中心性均可正向调节董事会内部非正式网络与企业创新之间的关系。 研究结论不仅回应了学术界关于人口统计学特征与中国本土情景相结合的呼吁,而且揭示了董事会内部与外部网络的互动性,深化了对中国本土企业社会网络治理机制的认识。     

汽车配件企业安全库存设置

整车厂商JIT要求对上游的汽车配件生产企业快速响应,汽车配件生产企业为了满足整车厂商的突发性需求与消除本企业内部影响生产平稳的一些不确定因素,也是为了取得比较好的客户满意率,因此对安全库存的研究显得极为重要。文章借助于统计学方面的一些知识和专门的统计软件SPSS对汽车配件生产企业的采购提前期和需求量进行了分析,旨在得出适合汽车配件生产企业的安全库存和再订货点的设置方法。     

烟化回收氧化矿中有价多金属的生产实践

氧化矿经破碎后,按冶炼渣型要求,与一定量的铁矿和石粉混合,以冷料的形式加入烟化炉进行挥发处理,周期作业。烟化温度为1 200～1 250℃,投料和熔化时间为2～3 h。熔化后前2 h是锌、铅、锑氧化、还原挥发阶段,后2 h为锡硫化挥发阶段,大部分的有价金属经氧化还原与硫化挥发后以氧化物的形式进到布袋收尘回收。烟尘的产出率约为22%,有价金属回收率分别为锌78%、锡90%、铅93%、锑80%、铟70%。     

废铅酸蓄电池回收再生过程污染源分析及节能减排技术

废铅酸蓄电池既是危险废物,对人类和环境造成危害,又是不可缺少的再生资源,与原生铅相比,生产成本降低38％左右；节约能源25.1％～ 31.4％,通过对废铅酸蓄电池再生过程污染源进行分析,使再生铅生产企业更加关注污染源,从根本上治理污染.通过对节能减排技术的介绍,以便增强对节能减排技术了解和应用.     

浅析挖孔灌注桩的桩基缺陷分析及防范措施

在挖孔灌注桩施工中,由于控制不严、操作不当、地质条件的特殊性等原因,易造成施工质量缺陷。如何保证挖孔灌注桩的施工质量,确保桥梁结构安全,显得尤为重要。本文就山区桥梁挖孔桩施工缺陷分析及防范措施进行探讨,以便有效控制桩基施工质量。     

论银团贷款在我国的推广

国际银团贷款是当今国际货币市场较为通行的中长期融资方式。本文试图借鉴国际银团贷款的成功经验，对在我国积极推进国内银团贷款进行了探讨，以期发挥金融整体功能，分散和防范贷款风险，解决当前国有大型企业改革中遇到的资金困难与矛盾。