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).     

Why Developing Countries Have Failed to Increase Their Exports of Agricultural Processed Products

The article uses the case study of coffee, tea and cocoa to analyse whether tariff escalation constitutes a barrier to market access that thwarts diversification efforts of developing countries into exports of value‐added agricultural processed products. It also examines the extent to which non‐tariff barriers act as market access barriers that constrain developing countries from developing their exports of agricultural processed products. Our analysis shows that tariff escalation is not the main barrier; rather it is the prevalence of non‐tariff barriers (including domestic non‐tariff barriers) that limits the ability of developing countries to increase their agricultural processed exports. This has important policy implications in terms of the emphasis that trade negotiators and policy planners should place on addressing non‐tariff barriers.     

标准加入法测定酱腌菜中铅的探讨

采用标准加入法消除酱腌菜中食盐的干扰,建立标准加入法测定酱腌菜中痕量铅的方法,该方法2、4μg/ml添加水平回收率为96.5%～99.0%,方法简单,准确度、精密度高,快速方便,符合标准分析要求。     

超宽带穿墙探测雷达的运动目标检测技术

提出了利用低频超宽带(UWB)脉冲信号实现穿墙探测的设想，研究了超宽带穿墙探测雷达(UWB—TWDR)的运动目标回波信号模型，并基于运动目标回波信号的相关性，利用相干叠加原理对多次观测的结果实现运动目标的检测。最后通过具体的穿透混凝土砖块墙壁实测实验验证了上述设想和算法。     

组织增信与有限责任联保增信的有效结合：牟平区“助保金”贷款案例

为了克服＂担保难＂这一中小企业融资瓶颈,多种担保模式创新不断涌现。山东省烟台市牟平区＂助保金＂贷款,通过＂重点中小企业池＂中的企业以缴纳助保金的形式进行联保,加上政府提供的风险补偿金的保证,拓展了中小企业的融资边界。这一模式,实现了企业信用增级和信用信息经济价值转化。     

超越价值增值的公共信息增值服务研究

公共信息的价值增值服务和增值服务都是公共信息开发利用的重要手段,价值增值是增值服务的基础,而增值服务是实现公共信息个性化和深层次服务的重要方式。文章从价值增值服务和增值服务的区别谈起,探讨了目前实现增值服务的障碍因素和解决途径。     

内部审计助推高校后勤改革的思考

后勤审计是高校内部审计的组成部分,高校后勤审计通过发挥经济监督、管理控制、决策服务等职能来实现组织增值、推进后勤社会化改革的目标,但高校后勤审计具有审计内容的复杂性、审计评价标准的多元化、审计基础薄弱、审计成效的局限性等特点,因此应通过加强审计队伍建设、拓展审计服务内容、健全后勤财务核算体系、构建科学的审计评价体系、提高审计质量等路径来提升内部审计对高校后勤改革的助推作用.     

How perceived trust mediates merchant's intention to use a mobile wallet technology

As mobile wallets are in constant demand and growing over the past few years, there is a need to identify views of different stakeholders involved in the process. Several studies have been done to investigate consumers' perspective intensively. On the other hand, review of perception and adoption of wallet services by other participants, in particular merchants, is often neglected. The present study aims to fill this gap. This study used an empirical model to measure merchant's intention to use a mobile wallet technology. The study includes the variables, perceived compatibility, perceived usefulness, awareness, perceived cost, perceived customer value addition and perceived trust, and aims to determine their influence on intention to use. Our study also tested the mediating effect of perceived trust on the influence of perceived usefulness to predict merchant's intention. The study includes results of the survey of 315 Indian merchants by an online survey method. We find the highest effect of perceived customer value addition on merchant's intention, followed by perceived usefulness of technology. The proposed mediation effect of perceived trust was small but significant on perceived usefulness. The results of the study can help mobile payment companies to understand factors that are relevant to increase adoption of technology in the context of merchants.     

杀菌剂现场投加方案优化

通过对胜利油田注入水SRB含量的现状调查,分析影响SRB达标率的主要原因。通过现场投加方式的优化,有效控制系统SRB的滋生,保证水质沿程稳定。