Hybrid Set Covering and Dynamic Modular Covering Location Problem: Application to an Emergency Humanitarian Logistics Problem

This paper presents an extension of the covering location problem as a hybrid covering model that utilizes the set covering and maximal covering location problems. The developed model is a multi-period model that considers strategic and tactical planning decisions. Hybrid covering location problem (HCLP) determines the location of the capacitated facilities by using dynamic set covering location problem as strategic decisions and assigns the constructive units of facilities and allocates the demand points by using dynamic modular capacitated maximal covering location problem as tactical decisions. One of the applications of the proposed model is locating first aid centers in humanitarian logistic services that have been addressed by studying a threat case study in Japan. In addition to validating the developed model, it has been compared to other possible combined problems, and several randomly generated examples have been solved. The results of the case study and model validation tests approve that the main hybrid developed model (HCLP) is capable of providing better coverage percentage compared to conventional covering models and other hybrid variants.

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Did Groupthink or Polythink Derail the 2016 Raqqa Offensive?

The Oxford Handbook of Behavioral Political Science ◽

10.1093/oxfordhb/9780190634131.013.22 ◽

2019 ◽

Author(s):

Kasey Barr ◽

Alex Mintz

Keyword(s):

Decision Making ◽

Group Dynamics ◽

Decision Making Process ◽

Islamic State ◽

Study Analysis ◽

Strategic Decisions ◽

Case Study Analysis ◽

The Us ◽

Tactical Decisions

This chapter examines the effect of group dynamics on the 2016 decision within the administration of President Barack Obama to lead the international coalition in a mission to liberate Raqqa, Syria, from the Islamic State. The authors show that whereas the groupthink syndrome characterized the decision-making process of the US-led coalition’s decision to attack Raqqa, it was polythink that characterized the decision-making dynamics both in the US-led coalition and within the inner circle of Obama’s own foreign policy advisors. Through case-study analysis, the authors illustrate that groupthink is more likely in strategic decisions, whereas polythink is more likely in tactical decisions.

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A decision problem for bank branch site selection: a GIS mapping perspective with maximal covering location problem: a case study of Isfahan, Iran

International Journal of Services and Operations Management ◽

10.1504/ijsom.2021.116106 ◽

2021 ◽

Vol 39 (3) ◽

pp. 337

Author(s):

Zahra Namazian ◽

Emad Roghanian

Keyword(s):

Site Selection ◽

Decision Problem ◽

Location Problem ◽

Gis Mapping ◽

Bank Branch ◽

Maximal Covering ◽

Branch Site

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Model of Determining Operation Coverage Area of Port: Case Study East Java

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.862.208 ◽

2017 ◽

Vol 862 ◽

pp. 208-213

Author(s):

Firmanto Hadi ◽

Achmad Mustakim ◽

Irwan Tri Yunianto ◽

Siti Dwi Lazuardi ◽

Hasan Iqbal Nur ◽

...

Keyword(s):

Objective Function ◽

Transportation Cost ◽

Set Covering ◽

Coverage Area ◽

Economic Support ◽

Support Area ◽

Mode Of Transport ◽

Covering Model ◽

General Cargo

Hinterland of a port is an economic support area of a port. Basically the economy of a hinterland comes from industries in it. The need of goods creates the distribution of goods. Port users in East Java consider using nearest port from his company. This paper is intended to know hinterland area every port in East Java. This paper used set covering model to know hinterland area of each port. The objective function of this model is Minimize total inland transportation cost. The factors that are considered are the service of the ports, distance, mode of transport, and transportation time. The result of this paper shows the Hinterland area of Tanjung Perak port which used General cargo packaging is Surabaya, Container commodities are Bojonegoro, Gresik, Kediri, Lumajang, Mojokerto, Pasuruan, Probolinggo, Sidoarjo and Malanng, Dry Bulk commodities are Gresik, Kediri, Mojokerto, Sidoarjo, Tuban. Probolinggo port has hinterland are General cargo commodities are Madiun and Probolinggo. And Hinterland of Tanjung Wangi port which used container packaging areBondowoso and Banyuwangi.

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Development of set covering model for determining the open /closed facilities location and resizing capacity of fasilities

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/909/1/012082 ◽

2020 ◽

Vol 909 (1) ◽

pp. 012082 ◽

Cited By ~ 1

Author(s):

Utaminingsih Linarti ◽

Cahaya Annisa’ Fatonah ◽

Annie Purwani

Keyword(s):

Facility Location ◽

Location Problem ◽

Facility Location Problem ◽

Set Covering ◽

Second Stage ◽

Basic Model ◽

Facilities Location ◽

Covering Model ◽

Two Stages ◽

The Cost

Abstract Set Covering model determines the location of facilities that can be used that minimize the cost of assigning facilities to the point of request with the limitation that each facility was used for a number points of request. If there is an imbalance between the volume of demand points and the capacity of the facilities, it is necessary to open/closed facilities. In fact, facility location problem can extended for the decision not only open/closed but rezising area the existing facilities that can be adjusted considering the avaibility area of facilities location and demand points. This case has not been accommodated on the basic model of set covering. Not all the existing facilities can be resized. Rezising the area of facility location was assumed discrete. The aims of this study was optimized the alghorithm of set covering model. The solution this study was devided into two stages. The first stage was screening facilities that can be resized with survey location. The second stage was set covering model which the facilities will be close/opened and resize the existing facilities.

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Robust cooperative maximal covering location problem: a case study of the locating Tele-Taxi stations in Tabriz, Iran

International Journal of Services and Operations Management ◽

10.1504/ijsom.2018.089247 ◽

2018 ◽

Vol 29 (2) ◽

pp. 163 ◽

Cited By ~ 1

Author(s):

Hassan Rezazadeh ◽

Salim Moghtased Azar ◽

Meysam Shafiei Kisomi ◽

Rouhollah Bagheri

Keyword(s):

Location Problem ◽

Maximal Covering

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Robust cooperative maximal covering location problem: a case study of the locating Tele-Taxi stations in Tabriz, Iran

International Journal of Services and Operations Management ◽

10.1504/ijsom.2018.10010032 ◽

2018 ◽

Vol 29 (2) ◽

pp. 163

Author(s):

Rouhollah Bagheri ◽

Meysam Shafiei Kisomi ◽

Hassan Rezazadeh ◽

Salim Moghtased Azar

Keyword(s):

Location Problem ◽

Maximal Covering

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Theoretical and Computational Links between the p-Median, Location Set-covering, and the Maximal Covering Location Problem

Geographical Analysis ◽

10.1111/j.1538-4632.1976.tb00547.x ◽

2010 ◽

Vol 8 (4) ◽

pp. 406-415 ◽

Cited By ~ 89

Author(s):

Richard L. Church ◽

Charles S. ReVelle

Keyword(s):

Location Problem ◽

Set Covering ◽

Maximal Covering

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Research on Maintenance Force Location Model

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.268-270.2054 ◽

2012 ◽

Vol 268-270 ◽

pp. 2054-2057

Author(s):

Chang Zheng Qu ◽

Hong Qiang Gu ◽

Lu Gao

Keyword(s):

Location Problem ◽

Lagrangean Relaxation ◽

Location Model ◽

Relaxation Algorithm ◽

Maximal Covering ◽

Model Based ◽

Set Up ◽

Priority Function

To optimize to allocation of maintenance force in warfare, this paper extended the application of the maximal covering location problem. As the priority function being defined, a maximal covering location model based on the priority of requirement nodes was set up and a lagrangean relaxation algorithm was applied to solve the problem. A case study was given at last, which verified the model.

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