979 research outputs found
Research Directions in Information Systems for Humanitarian Logistics
This article systematically reviews the literature on using IT (Information Technology) in humanitarian logistics focusing on disaster relief operations. We first discuss problems in humanitarian relief logistics. We then identify the stage and disaster type for each article as well as the articleâs research methodology and research contribution. Finally, we identify potential future research directions
Robust Platelet Logistics Planning in Disaster Relief Operations Under Uncertainty: a Coordinated Approach
© 2017, Springer Science+Business Media, LLC. Resource sharing, as a coordination mechanism, can mitigate disruptions in supply and changes in demand. It is particularly crucial for platelets because they have a short lifespan and need to be transferred and allocated within a limited time to prevent waste or shortages. Thus, a coordinated model comprised of a mixed vertical-horizontal structure, for the logistics of platelets, is proposed for disaster relief operations in the response phase. The aim of this research is to reduce the wastage and shortage of platelets due to their critical role in wound healing. We present a bi-objective location-allocation robust possibilistic programming model for designing a two-layer coordinated organization strategy for multi-type blood-derived platelets under demand uncertainty. Computational results, derived using a heuristic Δ-constraint algorithm, are reported and discussed to show the applicability of the proposed model. The experimental results indicate that surpluses and shortages in platelets remarkably declined following instigation of a coordinated disaster relief operation
Research on multi-objective emergency logistics vehicle routing problem under constraint conditions
Purpose: Aim at choosing a relative good vehicle routing in emergency conditions under constraint conditions when disaster happens. Rapid response and rescue can save a lot of people.
Design/methodology/approach: Modeling analysis: establishing a mathematical model of multi-objective emergency logistics vehicle routing problem. And in end of the paper, we intend to use genetic algorithms to solve the problem.
Findings: Considering time requirement and cost limit both while choosing vehicle routing when the disasters happens is meaningful. We can get a relative good result and give a guidance to rescue teams.
Originality/value: Consider cost and time objectives and kinds of realistic conditions (such as the road congestion) in the model when solving the problem, having expanded the theory scope.Peer Reviewe
Emergency logistics for wildfire suppression based on forecasted disaster evolution
This paper aims to develop a two-layer emergency logistics system with a single depot and multiple demand sites for wildfire suppression and disaster relief. For the first layer, a fire propagation model is first built using both the flame-igniting attributes of wildfires and the factors affecting wildfire propagation and patterns. Second, based on the forecasted propagation behavior, the emergency levels of fire sites in terms of demand on suppression resources are evaluated and prioritized. For the second layer, considering the prioritized fire sites, the corresponding resource allocation problem and vehicle routing problem (VRP) are investigated and addressed. The former is approached using a model that can minimize the total forest loss (from multiple sites) and suppression costs incurred accordingly. This model is constructed and solved using principles of calculus. To address the latter, a multi-objective VRP model is developed to minimize both the travel time and cost of the resource delivery vehicles. A heuristic algorithm is designed to provide the associated solutions of the VRP model. As a result, this paper provides useful insights into effective wildfire suppression by rationalizing resources regarding different fire propagation rates. The supporting models can also be generalized and tailored to tackle logistics resource optimization issues in dynamic operational environments, particularly those sharing the same feature of single supply and multiple demands in logistics planning and operations (e.g., allocation of ambulances and police forces). © 2017 The Author(s
A Multi-Criteria Vertical Coordination Framework for a Reliable Aid Distribution
Purpose: This study proposes a methodology that translates multiple humanitarian supply chain
stakeholdersâ preferences from qualitative to quantitative values, enabling these preferences to be
integrated into optimization models to ensure their balanced and simultaneous implementation
during the decision-making process.
Design/methodology/approach: An extensive literature review is used to justify the
importance of developing a strategy that minimizes the impact of a lack of coordination on
humanitarian logistics decisions. A methodology for a multi-criteria framework is presented that
allows humanitarian stakeholdersâ interests to be integrated into the humanitarian decisionmaking
process.
Findings: The findings suggest that integrating stakeholdersâ interests into the humanitarian
decision-making process will improve its reliability. Research limitations/implications: To further validate the weights of each stakeholderâs
interests obtained from the literature review requires interviews with the corresponding
organizations. However, the literature review supports the statements in this paper.
Practical implications: The cost of a lack of coordination between stakeholders in
humanitarian logistics has been increasing during the last decade. These coordination costs can be
minimized if humanitarian logisticsâ decision-makers measure and simultaneously consider
multiple stakeholdersâ preferences.
Social implications: When stakeholdersâ goals are aligned, the humanitarian logistics response
becomes more efficient, increasing the quality of delivered aid and providing timely assistance to
the affected population in order to minimize their suffering.
Originality/value: This study provides a methodology that translates humanitarian supply chain
stakeholdersâ interests into quantitative values, enabling them to be integrated into mathematical
models to ensure relief distribution based on the stakeholdersâ preferences.Peer Reviewe
Relief distribution networks : a systematic review
In the last 20 years, Emergency Management has received increasing attention from the scientific community. Meanwhile, the study of relief distribution networks has become one of the most popular topics within the Emergency Management field. In fact, the number and variety of contributions devoted to the design or the management of relief distribution networks has exploded in the recent years, motivating the need for a structured and systematic analysis of the works on this specific topic. To this end, this paper presents a systematic review of contributions on relief distribution networks in response to disasters. Through a systematic and scientific methodology, it gathers and consolidates the published research works in a transparent and objective way. It pursues three goals. First, to conduct an up-to-date survey of the research in relief distribution networks focusing on the logistics aspects of the problem, which despite the number of previous reviews has been overlooked in the past. Second, to highlight the trends and the most promising challenges in the modeling and resolution approaches and, finally, to identify future research perspectives that need to be explored
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Optimizing emergency preparedness and resource utilization in mass-casualty incidents
This paper presents a response model for the aftermath of a Mass-Casualty Incident (MCI) that can be used to provide operational guidance for regional emergency planning as well as to evaluate strategic preparedness plans. A mixed integer programming (MIP) formulation is proposed for the combined ambulance dispatching, patient-to-hospital assignment, and treatment ordering problem. T he goal is to allocate effectively the limited resources during the response so as to improve patient outcomes, while the objectives are to minimize the overall response time and the total flow time required to treat all patients, in a hierarchical fashion. The model is solved via exact and MIP-based heuristic solution methods. The applicability of the model and the performance of the new methods are challenged on realistic MCI scenarios. We consider the hypothetical case of a terror attack at the New York Stock Exchange in Lower Manhattan with up to 150 trauma patients. We quantify the impact of capacity-based bottlenecks for both ambulances and available hospital beds. We also explore the trade-off between accessing remote hospitals for demand smoothing versus reduced ambulance transportation times
Performance Trade-offs in Layouts For Relief Centers
At a disaster affected region, relief centers distribute critical supplies and aid to the affected victims. Unlike traditional distribution centers, relief centers experience significant âcrowd effectsâ due to the sudden influx of victims in a confined space. Using knowledge from studies on pedestrian traffic flow, specialized state dependent queuing models are developed to model the flow of victims along the walkways setup at a relief center. The underlying queuing network model is analyzed to derive expressions for the average times that victims experience before they receive the service at the relief center. The research shows that crowd density effects lead to significant increase in congestion and queuing delays underscoring the importance of developing specialized queuing models that assess the impact of congestion effects on alternative layouts of relief centers
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