: Recent market trends, such as outsourcing and globalization, have made supply chains more expos... more : Recent market trends, such as outsourcing and globalization, have made supply chains more exposed to disruptive external incidents, such as catastrophic man made events and natural disasters. Globalization favors the expansion of the supply chain across national borders; a fact that can transform even much smaller incidents to organizational crises (Manuj & Mentzer, 2008). More and more, stakeholders are being implicated in contemporary supply chains and when a crisis occurs it has to be faced timely, otherwise the consequences can get out of proportions (Randall & Farris, 2009). Lately, organizations try to make proactive planning to enhance decision making in the time of a crisis, but still no specific guidelines, either from literature or practitioners, exist about supply chain crisis management (Hittle & Leonard, 2011). In this paper, we try to identify specific processes and practices that make enterprises successfully confront supply chain crises or drive them to failure by studying major crises incidents as reported in the literature. In doing so, indicative case studies are studied and the business practices are examined, analyzed and discussed.
The research presented in this paper attempts an initial evaluation of Twitter as an
instrument f... more The research presented in this paper attempts an initial evaluation of Twitter as an instrument for emergency response in the context of a recent crisis event. The case of the 2013 disaster, when typhoon Haiyan hit Philippines is examined by analyzing nine consecutive days of Twitter messages and comparing them to the actual events. The results indicate that during disasters, Twitter users tend to post messages to enhance situation awareness and to motivate people to act. Furthermore, tweets were found reliable and provided valuable information content, supporting the argument that Twitter presents a very good potential to become a useful tool in situations where rapid emergency response is essential
Supply chain risk management (SCRM) is a relatively new scientific discipline aiming to support m... more Supply chain risk management (SCRM) is a relatively new scientific discipline aiming to support management in its everyday struggle against the inherent uncertainty of supply chain operations propagated mostly by demand and supply fluctuations, in terms of yields, capacity, costs and lead times. This paper focuses on a literature review of available SCRM frameworks and models. Identified frameworks and models are studied and analyzed according to their method of validation and the normative elements that constitute the conceptual construct, be it a framework or model. In each case, the constraints and limitations of the modeling effort are identified resulting in the determination of two major issues, which have to be addressed by researchers in the future, these being the absence of a holistic approach for SCRM and the frequent oversight of behavioral aspects, such as the risk behavior of decision makers.
Increased demand variability between the discrete tiers of a supply chain is perhaps the most sig... more Increased demand variability between the discrete tiers of a supply chain is perhaps the most significant criterion for strategic supply chain decisions, for example facility location and supply chain network design, as it directly affects the efficient operation of the whole supply chain. In this paper, we describe a real-life case of pursuing remedy to the demand variability problem by elaborating a reference model focusing on supply chain processes, which encapsulate critical demand related decisions, currently ill-treated, underestimated or even worse, overlooked. The paper focuses on the basis reference model selection stage of our research and provides details of analytic hierarchy process (AHP’s) application, in an operations research/supply chain management interdisciplinary context, to support the decision of selecting the most appropriate reference model to serve as the basis for the development of a supply chain reference model, focusing on demand variability management. In doing so, a group of two academic professors and three supply-chain experts was formed under the supervision of the AHP study facilitator. The AHP process resulted in a unanimous decision to shortlist SCOR and GSCF models, as providing the best coverage of the criteria list items. Finally, the GSCF model is selected as an initial basis for the development of the supply chain reference model for managing demand variability, introduced and presented at the end of the paper.
: Recent market trends, such as outsourcing and globalization, have made supply chains more expos... more : Recent market trends, such as outsourcing and globalization, have made supply chains more exposed to disruptive external incidents, such as catastrophic man made events and natural disasters. Globalization favors the expansion of the supply chain across national borders; a fact that can transform even much smaller incidents to organizational crises (Manuj & Mentzer, 2008). More and more, stakeholders are being implicated in contemporary supply chains and when a crisis occurs it has to be faced timely, otherwise the consequences can get out of proportions (Randall & Farris, 2009). Lately, organizations try to make proactive planning to enhance decision making in the time of a crisis, but still no specific guidelines, either from literature or practitioners, exist about supply chain crisis management (Hittle & Leonard, 2011). In this paper, we try to identify specific processes and practices that make enterprises successfully confront supply chain crises or drive them to failure by studying major crises incidents as reported in the literature. In doing so, indicative case studies are studied and the business practices are examined, analyzed and discussed.
The research presented in this paper attempts an initial evaluation of Twitter as an
instrument f... more The research presented in this paper attempts an initial evaluation of Twitter as an instrument for emergency response in the context of a recent crisis event. The case of the 2013 disaster, when typhoon Haiyan hit Philippines is examined by analyzing nine consecutive days of Twitter messages and comparing them to the actual events. The results indicate that during disasters, Twitter users tend to post messages to enhance situation awareness and to motivate people to act. Furthermore, tweets were found reliable and provided valuable information content, supporting the argument that Twitter presents a very good potential to become a useful tool in situations where rapid emergency response is essential
Supply chain risk management (SCRM) is a relatively new scientific discipline aiming to support m... more Supply chain risk management (SCRM) is a relatively new scientific discipline aiming to support management in its everyday struggle against the inherent uncertainty of supply chain operations propagated mostly by demand and supply fluctuations, in terms of yields, capacity, costs and lead times. This paper focuses on a literature review of available SCRM frameworks and models. Identified frameworks and models are studied and analyzed according to their method of validation and the normative elements that constitute the conceptual construct, be it a framework or model. In each case, the constraints and limitations of the modeling effort are identified resulting in the determination of two major issues, which have to be addressed by researchers in the future, these being the absence of a holistic approach for SCRM and the frequent oversight of behavioral aspects, such as the risk behavior of decision makers.
Increased demand variability between the discrete tiers of a supply chain is perhaps the most sig... more Increased demand variability between the discrete tiers of a supply chain is perhaps the most significant criterion for strategic supply chain decisions, for example facility location and supply chain network design, as it directly affects the efficient operation of the whole supply chain. In this paper, we describe a real-life case of pursuing remedy to the demand variability problem by elaborating a reference model focusing on supply chain processes, which encapsulate critical demand related decisions, currently ill-treated, underestimated or even worse, overlooked. The paper focuses on the basis reference model selection stage of our research and provides details of analytic hierarchy process (AHP’s) application, in an operations research/supply chain management interdisciplinary context, to support the decision of selecting the most appropriate reference model to serve as the basis for the development of a supply chain reference model, focusing on demand variability management. In doing so, a group of two academic professors and three supply-chain experts was formed under the supervision of the AHP study facilitator. The AHP process resulted in a unanimous decision to shortlist SCOR and GSCF models, as providing the best coverage of the criteria list items. Finally, the GSCF model is selected as an initial basis for the development of the supply chain reference model for managing demand variability, introduced and presented at the end of the paper.
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instrument for emergency response in the context of a recent crisis event. The case
of the 2013 disaster, when typhoon Haiyan hit Philippines is examined by
analyzing nine consecutive days of Twitter messages and comparing them to the
actual events. The results indicate that during disasters, Twitter users tend to post
messages to enhance situation awareness and to motivate people to act.
Furthermore, tweets were found reliable and provided valuable information
content, supporting the argument that Twitter presents a very good potential to
become a useful tool in situations where rapid emergency response is essential
instrument for emergency response in the context of a recent crisis event. The case
of the 2013 disaster, when typhoon Haiyan hit Philippines is examined by
analyzing nine consecutive days of Twitter messages and comparing them to the
actual events. The results indicate that during disasters, Twitter users tend to post
messages to enhance situation awareness and to motivate people to act.
Furthermore, tweets were found reliable and provided valuable information
content, supporting the argument that Twitter presents a very good potential to
become a useful tool in situations where rapid emergency response is essential