Do ongoing networks block out new friends? Reconciling the embeddedness constraint dilemma on new alliance partner addition

Research Summary: This study addresses a theoretical dilemma regarding how alliance network constraint (reflected by network cohesion) affects a firm’s alliance formation with new partners. Using a network pluralism approach, we separate a firm’s ego alliance network into two activity‐based networks—an exploratory network and an exploitative network—based on the primary value chain activity involved in each alliance. We argue that the cohesion of exploratory or exploitative networks has an inverted U‐shaped effect on the addition of new partners in the same activity‐based network, and a positive effect on the addition of new partners in the other network. Results based on data from the biotechnology industry largely support our predictions with one exception. Our study contributes to both scholarly understanding of network embeddedness and alliance practice. Managerial Summary: The structure of firms’ ongoing alliance networks may have paradoxical implications for their efforts to search for and form alliance with new partners. That is, when a firm’s alliance partners are tightly connected with each other, the cohesive network tends to both encourage and impede the focal firm to add new partners. We resolve this dilemma by showing that when a firm is deeply entrenched in a cohesive alliance network conducting a certain type of activities (e.g., R&D activities), it may not easily add new R&D alliance partners. However, it may still be able to escape from the cohesive R&D alliance network by seeking new partners conducting other activities (e.g., manufacturing activities).     

The Internet of Things as an accelerator of advancement of broadband networks: A case of Thailand

The advanced development of broadband access is an inevitable step toward supportive daily lives and sustainable economic growth. However, the decisive outcome of the development relies heavily on the demand side. Consumer choice among advanced Internet broadband technologies will determine the achievement of the development. This study aims to illustrate that consumer decisions on choices of advanced Internet access are influenced by the emergence of the Internet of Things (IoT) applications. A bivariate probit model is applied to examine the effects of IoT, consumer's individual characteristics, and their current use of networks on their decision pertaining to the choice of advanced Internet access. Using Thailand as a case study, the result indicates that the emergence of IoT applications accelerates the adoption of both advanced mobile broadband (5G) and advanced fixed broadband (FTTH). This finding may help policy makers to optimize the future direction of the Internet infrastructure development in Thailand, and also countries in a similar stage.     

On regulations for 5G: Micro licensing for locally operated networks

Future 5G networks aim at providing new high-quality wireless services to meet stringent and case-specific needs of various vertical sectors beyond traditional mobile broadband offerings. 5G is expected to disrupt the mobile communication business ecosystem and open the market to drastically new sharing based network operational models. 5G technical features of network slicing and small cell deployments in higher carrier frequencies will lower the investment barrier for new entrants to deploy local radio access networks and offer vertical specific services in specific areas and allow them lease the remaining required infrastructure on demand from mobile network operators (MNO) or infrastructure vendors. To realize the full vision of 5G to benefit the society and promote competition, innovation and emergence of new services when the 5G end-to-end network spans across different stakeholders administrative domains, the existing regulations governing the mobile communication business ecosystem are being refined. This paper provides a tutorial overview on how 5G innovations impact mobile communications and reviews the regulatory elements relevant to 5G development for locally deployed networks. This paper expands the recent micro licensing model for local spectrum authorization in future 5G systems and provides guidelines for the development of the key micro licensing elements. This local micro licensing model can open the mobile market by allowing different stakeholders to deploy local small cell networks with locally issued spectrum licenses ensuring pre-defined quality guarantees for the vertical sectors’ case specific needs.     

基于网络DEA的科技创新型企业投资效率评价分析

企业投资效率是影响企业价值的关键因素。本文在划分投资转化过程子阶段的基础上构建投资效率评价模型及指标体系,运用二阶段网络DEA方法测算我国创业板科技创新型上市公司2012～2014年投资效率值及非效率投资的改进程度。实证结果表明,科技创新型上市公司利润产生子阶段投资效率较低,并且研发支出、无形资产以及长期投资三方面的投资冗余现象明显,但是多数上市公司两个阶段的投资效率随着时间的推移逐渐趋向双重高效。     

社会网络分析在市场营销学中的应用

作为一种日益成熟的研究范式,社会网络分析已经引起了多个学科的关注和应用,也为市场营销学提供了崭新的思想、方法和借鉴工具。文章首先阐述了社会网络分析的基本思路,在此基础上比较了社会网络分析的两种具体研究方法——自我中心网分析和整体网分析。讨论了社会网络分析在市场营销学的应用,重点指出了社会网络分析在发掘意见领袖和重估顾客价值方面的独特作用。对社会网络分析在市场营销学中的应用进行了简要评述,并指出了其局限性。     

Bigger and safer: the diffusion of competitive advantage

Research on the diffusion of technologies that give competitive advantage is needed to understand the role of technology in competition. Predictions on which firms first obtain useful technologies are made by cluster theory, which holds that the diffusion is geographically bounded, and network theory, which holds that adoption is more rapid in central network positions. These predictions can be evaluated using data on the diffusion of supplier innovations that give competitive advantage to firms in the buyer industry. Here, the diffusion of new ship types is studied using the heterogeneous diffusion model and data on shipping firm‐shipbuilder networks, showing that valuable innovations remain rare because they are not adopted by distant firms in geographical and network space. The strong influence of geographically dispersed interfirm networks on technology diffusion justifies a greater role of interorganizational networks in the theory of competitive advantage. Copyright © 2008 John Wiley & Sons, Ltd.     

基于无线局域网标准的天然气长输管道通信系统的整合

通信系统在天然气长输管道的生产运营中起着至关重要的作用。目前陕西省天然气股份有限公司通信网由公司总部、西安、延安、杨凌分公司及22个输气场站等多个不同的独立建设的系统构成,各自独立建网形成了一个个“信息孤岛”。采用基于无线局域网标准的VOIP系统整合陕西省天然气股份有限公司通信网,一方面可使闲置的带宽得到充分利用．另一方面也能有效降低系统内部通信费用,有效消除通信障碍,提高工作效率和企业管理水平。     

BP神经网络在药品销售预测中的应用

目的对药品销售情况进行科学的分析和预测,为合理制订药品采购计划提供参考。方法利用BP神经网络的数据分析、统计、对非线性数据进行拟合等功能,对药品未来的销售量和销售趋势进行分析和预测。结果BP神经网络仿真预测的药品销售量与实际销售量无显著性差异。结论BP神经网络在预测药品未来销售量上具有实际应用价值,为合理制订药品采购计划,降低药品流通成本提供参考依据。     

随机需求下横向并购供应链网络整合优化策略研究

本文从系统优化视角,针对增设集散中心的横向并购供应链网络整合策略,利用变分不等式建立了随机需求下的整合优化模型。以市场链为主线,以供应链网络均衡理论为基 础,构建了以横向并购供应链网络活动总成本最小为目标的数学模型,通过转换成变分不等式采用改进的欧拉算法进行模型求解。通过数值算例进一步说明了模型的适用性和灵活性,得出了增设集散中心的并购整合策略能够降低供应链网络的平均运营成本的结论,通过对比不同市场紧密程度下产生的供应链网络平均成本协同效应,发现随着市场紧密程度的增加其协同效应更明显,为横向并购供应链网络整合优化提供理论依据与方法。     

基于产业集群升级的创新网络核心节点能力传递研究

在集群创新网络中,核心节点企业的创新能力较其他企业更强,研究核心节点企业创新能力传递对于集群升级至关重要。本文提出创新网络核心节点企业创新能力传递强度概念,并构建其概念模型。通过实证研究发现,创新网络核心节点企业创新能力传递强度对集群升级具有显著的正向影响,其中,创新能力传递速度和创新能力传递深度对集群升级促进作用显著;集群其他节点企业创新吸收能力调节了创新网络核心节点企业创新能力传递强度与集群升级的关系,并指出了研究结论的实践意义。