An integrated and dynamic optimisation model for the multi-level emergency logistics network in anti-bioterrorism system

2012 ◽  
Vol 43 (8) ◽  
pp. 1464-1478 ◽  
Author(s):  
Ming Liu ◽  
Lindu Zhao
Keyword(s):  
Dynamic Optimisation ◽  
Logistics Network ◽  
Emergency Logistics ◽  
Multi Level ◽  
Optimisation Model

Pollution optimisation study of logistics in SMEs

2019 ◽  
Vol 30 (4) ◽  
pp. 731-750 ◽  
Author(s):  
Anand Jaiswal ◽  
Cherian Samuel ◽  
G. Abhishek Ganesh
Keyword(s):  
Supply Chain ◽  
Small And Medium Enterprises ◽  
Pollutant Emission ◽  
Vehicular Pollution ◽  
Data Set ◽  
Content Type ◽  
Logistics Network ◽  
Pollution Emission ◽  
Optimisation Model ◽  
Medium Enterprises

Purpose The purpose of this paper is to provide a solution for greening the supply chain of small and medium enterprises (SMEs) by minimising the vehicular pollutant emission in the logistics network. Design/methodology/approach The paper proposes an optimisation model to reduce the pollution emission in the logistics of supply chain network in SMEs. The work considers vehicle routing and selection of suppliers, manufacturers and assemblers according to the availability of various Bharat Stage Emission Standards type vehicles. Introsort sorting based selection algorithm is used to solve the problem. The proposed solution is implemented using C++ on an experimental data set for analysing the model. Findings The outcome of the study is a pollution optimisation model for logistics of SMEs. The finding shows an approach to reduce total vehicular pollution emission in the logistics network in meeting the demand. The model is tested over an experimental study, and the result findings show which supply chain entities, type of environmental standard vehicles and vehicle routes are selected for the specific demand. Research limitations/implications The proposed model is confined to pollution optimisation with limited parameters only and does not consider cost and other factors that can be included in future work. Practical implications The work can be used for limiting pollution in logistics system as the corporate social responsibility of enterprises. Originality/value Proposed work presents a sustainable and green solution for pollution control in logistics activities of the SMEs.

scholarly journals A Novel Hybrid Algorithm for Multiobjective Location-Allocation Problem in Emergency Logistics

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Hongrui Chu ◽  
Yahong Chen
Keyword(s):  
Optimization Model ◽  
Complex Model ◽  
Theory And Practice ◽  
Logistics System ◽  
Logistics Network ◽  
Location Allocation ◽  
Emergency Logistics ◽  
Ga Algorithm ◽  
Relief Distribution ◽  
Deprivation Costs

Increased frequency of disasters keeps reminding us of the importance of effective resource distribution in postdisaster. To reduce the suffering of victims, this paper focuses on how to establish an effective emergency logistics system. We first propose a multiobjective optimization model in which the location and allocation decisions are made for a three-level logistics network. Three objectives, deprivation costs, unsatisfied demand costs, and logistics cost, are adopted in the proposed optimization model. Several cardinality and flow balance constraints are considered simultaneously. Then, we design a novel effective IFA-GA algorithm by combining the firefly algorithm and genetic algorithm to solve this complex model effectively. Furthermore, three schemes are proposed to improve the effectiveness of the IFA-GA algorithm. Finally, the numerical results provide several insights on the theory and practice of relief distribution, which also illustrate the validity of the proposed solution algorithm.

scholarly journals Risk Propagation Model and Its Simulation of Emergency Logistics Network Based on Material Reliability

2019 ◽  
Vol 16 (23) ◽  
pp. 4677 ◽  
Author(s):  
Tinggui Chen ◽  
Shiwen Wu ◽  
Jianjun Yang ◽  
Guodong Cong
Keyword(s):  
Complex Network ◽  
Network Theory ◽  
Economic Life ◽  
Propagation Model ◽  
Propagation Mechanism ◽  
Scheduling Problems ◽  
Logistics System ◽  
Complex Network Theory ◽  
Logistics Network ◽  
Emergency Logistics

Emergency logistics plays an important role in the rescue process after sudden disasters. However, in the process of emergency logistics activities, risks may arise due to scheduling problems or insufficient supply of warehouse stocks, resulting in an insufficient rescue capacity. In addition, the risk of emergency logistics is random and may exist in a certain link or throughout the whole rescue process of emergency logistics. Consequently, the disaster site may be invaded by sudden disaster risk due to the lack of necessary material supplies. The entire emergency logistics system may be destroyed and cause even greater losses as well. Based on this phenomenon, this paper introduces reliability factors of materials and combines the complex network theory to build an emergency logistics network and analyze the emergency logistics risk propagation mechanism. This paper firstly builds an emergency logistics network based on complex network theory. Then, it combines the improved epidemic model to analyze the influencing factors of risk propagation in the emergency logistics network. Finally, this paper probes into the emergency logistics risk propagation mechanisms and processes in terms of network type, material reliability, rescue speed, etc. Furthermore, this paper identifies key factors for risk control and proposes countermeasures to further spread risks, thereby reducing the risk to loss of economic life.

Research on Bottleneck of Emergency Logistics Capability Based on Emergency Logistics Network

2013 ◽  
Vol 711 ◽  
pp. 753-757 ◽  
Author(s):  
Tian Yong Wang ◽  
Ge Gao ◽  
Yu Lei Wang ◽  
Qian Qian Wang
Keyword(s):  
Theory Of Constraints ◽  
Logistics Network ◽  
Emergency Logistics ◽  
Bottleneck Link ◽  
Logistics Capability

Based on the emergency logistics network, the research calculate the logistics capability of each node and the line in the network .Then the research find out the bottlenecks link in emergency logistics network according to theory of constraints .At last, the research improve the capability of bottleneck link to improve the ability of the whole emergency logistics network rapidly.

scholarly journals Research on the Model and Algorithm for Multimodal Distribution of Emergency Supplies after Earthquake in the Perspective of Fairness

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Xiaowen Xiong ◽  
Fan Zhao ◽  
Yundou Wang ◽  
Yapeng Wang
Keyword(s):  
High Efficiency ◽  
Time Window ◽  
Location Routing Problem ◽  
Routing Problem ◽  
Logistics Network ◽  
Emergency Rescue ◽  
Location Routing ◽  
Driving Time ◽  
Emergency Logistics ◽  
Time Window Constraints

After the earthquake, it is important to ensure the emergency supplies are provided in time. However, not only the timeliness, but also the fairness from different perspectives should be considered. Therefore, we use a multilevel location-routing problem (LPR) to study the fairness of distribution for emergency supplies after earthquake. By comprehensively considering the time window constraints, the partial road damage and dynamic recovery in emergency logistics network, the stochastic driving time of the vehicle, and the mixed load of a variety of emergency materials, we have developed a multiobjective model for the LRP in postearthquake multimodal and fair delivery of multivariety emergency supplies with a limited period. The goal of this model is to minimize the total time in delivering emergency supplies and to minimize the maximum waiting time for emergency supplies to reach demand points. A hybrid heuristic algorithm is designed to solve the model. The example shows that this algorithm has a high efficiency and can effectively realize the supply of emergency supplies after the earthquake within the specified period. This method might be particularly suitable for the emergency rescue scenarios where the victims of the earthquake are vulnerable to mood swings and the emergency supplies need to be fairly distributed.

scholarly journals Simulation Research of Space-Time Evolution of Emergency Logistics Network Reliability Based on Complex Network Theory

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Li Huang ◽  
Wei Wang ◽  
Minggong Wang
Keyword(s):  
Complex Network ◽  
Network Reliability ◽  
High Reliability ◽  
Evaluation Index System ◽  
Simulation Research ◽  
Complex Network Theory ◽  
Logistics Network ◽  
Evaluation Indexes ◽  
Logistics Networks ◽  
Emergency Logistics

We propose the conception and evaluation indexes of emergency logistics network connecting reliability to construct evaluation index system of complex network reliability, and describe these indexes quantitatively to evaluate the network connecting reliability. Moreover, the network topological model and the simulation methods of reliability measurement when the network is under attack are present. Finally, we take three classical emergency logistics networks as examples, and through emulation analysis we obtain the connecting reliability changing situation of these three networks under random attack, the changing curve of the ratio of effective demand nodes and emergence supply mileage of emergency logistics network with same network density but different forms, and then evaluate the emergency logistics network connecting reliability. This can provide references for the designing of emergency logistics network with high reliability and analysis means for research in other fields.

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