Defining and Measuring the Institutional Context of National Intellectual Property Systems in a post-TRIPS world

Indices that approximate for the quality and strength of intellectual property (IP) systems are commonly used as variables in empirical international management studies. However, while international IP systems have radically transformed after the implementation of the TRIPS agreement, these contextual changes have not been accounted for in existing international management research approaches. This study examines the institutional context of IP systems in the post TRIPS implementation years by conceptualizing how IP Law on the books (regulations) and IP Law in practice (enforcement) combine. This enables the identification of two new contextual categories of IP systems that have not been conceptually, theoretically, or empirically captured in existing international management research. A review of the existing literature on indices measuring different aspects of national IP systems provides insights into how to improve future theoretical and empirical international management work that aims to study the effects of the context of IP systems in the post TRIPS era.     

Concerning Workload Control and Order Release: The Pre‐Shop Pool Sequencing Decision

Every production planning concept that incorporates controlled order release will initially withhold jobs from the shop floor and create a pre‐shop pool. Order release is a key component of the Workload Control concept that aims to maintain work‐in‐process within limits while ensuring due dates are met. Order release includes two decisions: (i) a sequencing decision that establishes the order in which jobs are considered for release; and, (ii) a selection decision that determines the criteria for choosing jobs for release. While selection has received much research attention, sequencing has been largely neglected. Using simulation, this study uncovers the potential for performance improvement in the sequencing decision and improves our understanding of how order release methods should be designed. Although most prior studies apply time‐oriented sequencing rules and load‐oriented selection rules, analysis reveals that load balancing considerations should also be incorporated in the sequencing decision. But an exclusive focus on load balancing is shown to increase mean tardiness and, paradoxically, require high workloads. A new sequencing rule is developed that only balances loads when multiple orders become urgent. It avoids high mean tardiness and allows the shop to operate at a low workload level. At the same time, the percentage tardy is reduced by up to 50% compared to a purely time‐oriented rule. The findings have implications not only for Workload Control but for any concept that features order release control, such as ConWIP and Drum‐Buffer‐Rope.     

TCP/IP的地址分析

从实用的角度出发，剖析了目前使用很广的TCP／IP协议的地址部分，以便深入地理解TCP／IP的本质：是计算机和其它设备通过网络交换信息的共同语言。