新产品开发网络资源与技术资源匹配关系:基于中国制造业企业的实证研究

新技术革命背景下新产品开发所需资源的广度和深度与日俱增,不同资源的匹配组合对于新产品开发成功具有直接决定性作用。本文结合资源基础理论与社会网络理论,深入研究了新产品开发中不同程度网络-技术资源组合对新产品开发市场绩效与风险的作用机理,并探究了产品多元化对网络-技术资源组合与新产品开发市场绩效、风险之间关系的调节效应。基于143家中国制造业企业实地调研数据,运用结构方程模型与分层回归分析方法进行实证,结果发现:网络资源广度-技术资源深度组合以及网络资源深度-技术资源广度组合对新产品开发市场绩效有正向影响,对新产品开发风险有负向作用;网络资源广度-技术资源广度组合以及网络资源深度-技术资源深度组合对新产品开发市场绩效有负向影响,对新产品开发风险有正向作用;产品多元化正向调节网络资源广度-技术资源深度组合与新产品开发风险之间的关系,以及网络资源广度-技术资源广度组合与新产品开发市场绩效、风险之间的关系。本文的研究为企业提高新产品开发资源配置效率、降低开发风险提供了决策支持与理论依据。     

基于多主体建模分析的银行间网络系统性风险研究

本文基于多主体建模分析了银行间核心-边缘网络的系统性风险。模型假设银行通过最优投资组合配置,在流动性和资本约束前提下谋求利润最大化。通过建立银行间市场交易环境的仿真模型,依据银行行为决策动态形成资产负债表与银行间网络敞口的数据,评估金融监管政策在银行间市场的实施效应。同时,引入不同网络结构模型加以对比分析,发现尽管核心-边缘银行间网络体系比无标度网络更易遭受共同冲击和传染风险,但当处于金融困境时,在宏观审慎管理政策机制作用下,核心-边缘网络体系比其他结构网络表现出更强的恢复力特性。     

通货膨胀下的联合库存选址模型研究

研究了通货膨胀对涉及一个供应商、多个候选配送中心和零售商的三级分销网络设计的影响.不同于传统的联合库存选址模型,所研究的模型考虑了整个系统的相关成本的时间价值,其目标是使在一定的通货膨胀率下总的选址、运输和库存成本之和的现值最小.为此,建立了一个非线性的整数规划模型,该模型为无容量约束问题的扩展模型,属于NP-hard问题.提出了3种基于不同编码形式的遗传算法用于求解该模型,并通过不同规模的算例对3种算法进行了有效性的分析和对比.最后,通过对各算例的计算结果的分析,发现随着通货膨胀率的增长,为了使这个分析网络的总成本现值最小,需要增加建立的DC的数量.     

基于扩展Hotelling模型的企业竞争策略研究

通过将纵向差异引入到二次函数运输成本下的Hotelling模型中,研究具有不同质量、网络外部性、兼容性和转移成本的2个垄断厂商的竞争策略.首先,进行选址;然后,进行价格竞争的完全信息动态博弈,得到产品具有横向差异和纵向差异的2个垄断厂商市场竞争的均衡策略,推广了Hotelling模型的结论;最后,在选择横向差异最大化的情况下,分析了一般市场竞争策略,在无纵向差异条件下分别讨论了不同网络效用系数、兼容性和转移成本对市场竞争策略的影响.     

基于客户需求的移动数据产业生态系统研究

围绕移动数据业务的发展,立足于移动数据业务价值网络的研究,从产业生态系统的角度分析了价值网络各环节价值增值的原理.按照马斯洛的需求层次理论,提出了在有效运作客户资源的基础上,对移动数据业务市场需求进行分析的方法.根据移动数据业务的服务对象,对市场需求进行了分类.提出了以移动运营商为核心,包括网络设备供应商、系统集成商、终端设备制造商、内容及服务提供商、虚拟运营商和用户在内的移动数字产业生态系统的基本架构.     

员工导师网络对员工职业生涯成功的影响研究

在梳理了员工导师网络的导师制理论、社会资本理论和职业成功理论后,运用SEM方法对员工导师网络的社会资本,导师网络效益与员工职业成功之间的关系进行了研究.结果表明:员工导师网络的社会资本对导师网络效益有显著影响;导师网络效益水平对员工的薪酬水平、升迁次数和职业满意度有影响,且与职业满意度显著正相关.     

Organizational status growth and structure: An alliance network analysis

Considering the status system emerging from a structure of corporate affiliations, we examine how alliance patterns among firms affect their changing organizational statuses and the structural development of the status system itself. Firm status is conceptually grounded in sociological theories of status and network analysis. The empirical setting we investigate is the network of alliances among firms in the Global Information Sector. The results indicate a negative effect of initial firm status on the growth rate of individual status, which is associated with the different patterns of alliance affiliations among firms with different status levels. Affiliation patterns also affect the extent of variation in the gap between status strata and firm mobility along the status hierarchy. The results highlight the importance of understanding the structural aspects underlying firm status attainment.     

Baby boomers and their entourage

The post-war generation of baby boomers has witnessed major transformations in family life as well as being at the vanguard of them. A study undertaken in Paris and London in 2006 among 90 individuals born between 1945 and 1954 reveals, however, strong relationships with ageing parents and adult children. Family groups based on local or dispersed entourages, with regular contact and the exchange of support, are clearly identified. Other configurations include families where affective ties persist but contact between the baby boomers and their entourage is less frequent. Few baby boomers have replaced family members with friends or remain socially isolated. These results show that the rise of individualism associated with the baby boomers has not weakened inter-generational ties, although tensions exist between the demands of family solidarity and individual projects.     

Motivations for self-assembling into project teams

This study investigates the self-assembly mechanisms of ad hoc project teams using a bipartite network perspective. Individuals and projects are modeled as two types of nodes and team membership as relations between them. This approach enables us to investigate factors that impact voluntary team assembly at the individual, dyadic, and team levels simultaneously. Using Exponential Random Graph Models (ERGM/p*), we study players’ combat teams in a Massively Multiplayer Online Role-Playing Game (MMORPG) as a case of self-assembled project teams. Empirical results show that individuals are motivated to join ad hoc teams to complete difficult projects but not projects with long durations. We also found that individuals tend to collaborate with specific teammates who have complementary skills, those who have similar age or skill level, and those who are affiliated with the same organizational entity.     

Pathways to happiness: From personality to social networks and perceived support

The present study attempts to incorporate individual personality into a social network account of subjective wellbeing (SWB) by proposing and testing a path model in which social relationships (egocentric social networks and perceived social support, PSS) mediate the relationship between personality and SWB. We found that network characteristics (including network size, emotional closeness, and proportion of new contacts) are related to SWB largely via the mediation of PSS. Additionally, network size and proportion of new contacts function as important mediating mechanisms linking extraversion, agreeableness and openness to PSS and SWB.