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This paper provides a toolkit based on NK fitness landscape to model complex supply chains and to carry out behavioral research analyzing the impact of decision makers' behaviors on supply chain management. Whereas this methodology has been largely applied in organizational studies, very few applications exist in supply chain contexts. Main research questions that could be addressed by means of the...
Under the deterioration of food safety environment of food suppliers and the uncertainty of food safety of the purchased food by individual manufacturer, this study aims to establish a mathematical model standard basis as a reference for decision evaluation on the optimal order quantity of food raw materials to satisfy the maximum expected returns, according to the food safety situations and market...
Remanufactured products are normally remanufactured from returned new products. Thus, they can be considered together with new products in product line design to obtain the maximum profit and market share of the product line. This paper proposes a methodology for optimal product line design with simultaneous consideration of remanufactured and new products which mainly involves development of dynamic...
Various sustainability indicators have been developed by governments, international organizations, and companies according to their different perspectives. It makes companies difficult to choose proper sustainability indicators for consistent assessments of sustainable products. In this paper, we propose a framework to determine specific categories of sustainability indicators according to design...
Enterprise risk management has never been more important in today's organizations. The rapid changes brought forth by the technological advancements and globalization, and the complexity in managing these changes has made it challenging for an organization to manage its risks effectively. The ISO31000:2009 enterprise risk management (ERM) framework was developed in an attempt to help organizations...
Nowadays, many telecom operators consider fiber-based access networks as a major solution to provide bandwidth hungry services such as High Definition TV over IPTV, online gaming, video streaming, high speed Internet, etc. However, today's telecom market is facing tough competitions with very tight budget and limited human resources. Return on investment for the deployment of new networks or transformation...
Employee involvement and employee training are most important and vital principles for the successful implementation of any newer manufacturing system or modern practice in any organization because the newer systems/practices require changed roles for people at all levels. The general human tendency to resist change understood properly may lead to dysfunctional implementation of newer systems/practices...
This study applied cognitive psychology in software testing/debugging process to predict software reliability by the time lag between error-detection and error-renovation. This paper integrates the SRGMs of Chiù et al. using the time-varying learning effects [2] to measure the performance of error-detection and error-renovation in a software testing/debugging project for the datasets in Huang &...
Globally, supply chains compete in a complex and rapidly changing environment. Hence, sustainable supplier selection, an operation in green manufacturing environment has become a decisive variable in the Arm's financial success. A major problem in sustainable supplier selection is not only to select sustainable suppliers but to insure suppliers maintain their behavior for a long period of time. This...
In order to keep pace with the trend of "sustainable development", "green building" has become an important design concept in the construction industry. However, the envelope forms and materials of a green building are usually chosen based merely on the architects' experiences instead of on a systematic assessment method. This study employs genetic algorithms to find the least-cost...
Recently, much effort has been devoted to the study of aerodynamic performance analysis for the damaged aircraft. Sometimes, we are more concerned about the specific value of survivability of damaged aircraft, which allows the analysts to plan combat operations. How to relate aerodynamic performance degradation to survivability when the aircraft is damaged is important for military operation research...
Organizational culture is an unambiguous term with long history, but without clear definition. There exists plurality of models, all of which are rather old. The goal of this paper is to test the appropriateness of these mainstream models in contemporary business setting — in context of two ICT companies of Estonia, an innovation oriented small European Union country. As a result, the usefulness of...
This paper deals with the influence of storage management policies on the performance of autonomous vehicle storage and retrieval systems (AVS/RS). Strategies like cross storage, access frequency based strategies, as well as path optimized and first in first out strategies were analyzed by using an AutoMod™ based simulation model. For each strategy the vehicle selection strategy was varied to identify...
In this paper we develop an integrated inventory model with imperfect production and inspection process under two-level trade credit strategy. We assume both manufacturer and retailer adopt the marketing strategy of transactions on credit. Consumers' demand is affected by the length of credit period provided by retailer. The impact of imperfect production quality and inspection errors is incorporated...
Simulation models have been extensively used in manufacturing to enhance the design, planning and decision making processes. However, the tendency has been to use simulation in one-off applications, often at the start of a project and not take account of inherent process changes over time. This has inhibited their contribution as a realtime decision make tool. This paper describes how simulation is...
Virtual machining systems that are adaptive and responsive towards real machining environment are crucial to leverage a deep understanding of the underlying machining operations. It must retain radical behavior in order to enhance process planning and machining performance, in response to ever-changing manufacturing activities. Therefore, the study aims to develop an interactive virtual machining...
Experiential learning has not yet found the attention it deserves in academic teaching. This paper describes a successful way to teach students highly complex subjects using experiential learning methods. To teach Lean, Virginia Tech students have created a student-driven, faculty supported team who conducts lean transformation events at cooperating companies, conducts industry workshop to teach Lean,...
In order to make sure small and medium enterprises (SMEs) can adapt them with competitive business environment globally and fulfil business requirements of new products or services, SMEs collaborate with others in form of Virtual Enterprise. Different enterprises align together to overcome various critical challenges such as resources and expertise while concentrate on their own core competencies...
Increasing global competition has led to the need for organisations to continually improve their quality performance. In particular, developing countries such as China are focused on catching up with more developed countries. This study examines the relationships between improvement in three factors (health and safety conditions, worker motivation and satisfaction, work/life balance policies) in increase...
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