Browsing by Author "Karsu, Özlem"
Now showing items 1-20 of 20
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Balance in resource allocation problems: a changing reference approach
(Springer, 2020)Fairness is one of the primary concerns in resource allocation problems, especially in settings which are associated with public welfare. Using a total benefit-maximizing approach may not be applicable while distributing ... -
Bi‐objective optimization of a grid‐connected decentralized energy system
(John Wiley and Sons, 2018)Motivated by the increasing transition from fossil fuel-based centralized systems to renewable energy-based decentralized systems, we consider a bi-objective investment planning problem of a grid-connected decentralized ... -
Capturing preferences for inequality aversion in decision support
(Elsevier, 2018-01-16)We investigate the situation where there is interest in ranking distributions (of income, of wealth, of health, of service levels) across a population, in which individuals are considered preferentially indistinguishable ... -
Clean water network design for refugee camps
(Springer, 2021-03)Motivated by the recent rise in need for refugee camps, we address one of the key infrastructural problems in the establishment process: The clean water network design problem. We formulate the problem as a biobjective ... -
Ensuring multidimensional equality in public service
(Elsevier Ltd, 2021-10-23)Service planning problems typically involve decisions that lead to the distribution of multiple benefits to multiple users, and hence include equality and efficiency concerns in a multidimensional way. We develop two ... -
Equitable decision making approaches over allocations of multiple benefits to multiple entities
(Elsevier, 2018)In this study, we develop decision support tools for policy makers that will help them make choices among a set of allocation alternatives. We assume that alternatives are evaluated based on their benefits to different ... -
Eşitlikçi çok amaçlı sırt çantası problemi
(Gazi Üniversitesi Fen Bilimleri Enstitüsü, 2018)Bu çalışmada, eşitlikçi kaygıların olduğu kaynak dağıtımı problemi için kullanılabilecek, çok amaçlı matematiksel modelleme yaklaşımı geliştirilmiştir. Karar vericinin eşitlikçi tercih ilişkisine sahip olduğu varsayılmış ... -
An exact algorithm for biobjective integer programming problems
(Elsevier Ltd, 2021-08)We propose an exact algorithm for solving biobjective integer programming problems, which arise in various applications of operations research. The algorithm is based on solving Pascoletti-Serafini scalarizations to search ... -
An exact algorithm for the minimum squared load assignment problem
(Elsevier, 2019)In this study, we consider an assignment problem with the objective to minimize the sum of squared loads over all agents. We provide mixed integer nonlinear and linear programming formulations of the problem and present a ... -
Exact and heuristic solution approaches for the airport gate assignment problem
(Elsevier, 2021-01-30)In this study, we consider an airport gate assignment problem that assigns a set of aircraft to a set of gates. The aircraft that cannot be assigned to any gate are directed to an apron. We aim to make aircraft-gate ... -
Fair allocation of personal protective equipment to health centers during early phases of a pandemic
(Elsevier, 2022-05)We consider the problem of allocating personal protective equipment, namely surgical and respiratory masks, to health centers under extremely limited supply. We formulate a multi-objective multi-period non-linear resource ... -
Fair resource allocation: Using welfare-based dominance constraints
(Elsevier, 2022-03-01)In this paper we consider the problem of supporting resource allocation decisions affecting multiple beneficiaries. Such problems inherently involve efficiency-fairness trade-offs. We introduce a new approach based on the ... -
Humanitarian facility location under uncertainty: Critical review and future prospects
(Elsevier, 2021-01-08)This paper provides a comprehensive review of the research done on facility location problems under uncertainty in a humanitarian context. The major goal is to summarize and help structuring this topic, which has increasingly ... -
In Press, Corrected Proof: Ensuring multidimensional equality in public service
(Elsevier, 2021-10-23)Service planning problems typically involve decisions that lead to the distribution of multiple benefits to multiple users, and hence include equality and efficiency concerns in a multidimensional way. We develop two ... -
Planning sustainable routes: Economic, environmental and welfare concerns
(Elsevier BV, 2021-10-09)We introduce a problem called the Sustainable Vehicle Routing Problem (SVRP) in which the sustainability notion is considered in terms of economic, environmental and social impacts. Inspired by real-world problems that ... -
The refugee camp management: a general framework and a unifying decision-making model
(Emerald Group Publishing, 2019)Purpose: Motivated by the increasing need to provide support to refugees, which remains as a pressing issue in the agenda of many countries, the purpose of this paper is to consider the refugee camp management problem. ... -
Solution approaches for equitable multiobjective integer programming problems
(Springer, 2022-04)We consider multi-objective optimization problems where the decision maker (DM) has equity concerns. We assume that the preference model of the DM satisfies properties related to inequity-aversion, hence we focus on finding ... -
Split algorithms for multiobjective integer programming problems
(Elsevier, 2022-04)We consider split algorithms that partition the objective function space into p or p−1 dimensional regions so as to search for nondominated points of multiobjective integer programming problems, where p is the number of ... -
Towards the sustainable development goals: A bi-objective framework for electricity access
(Elsevier Ltd, 2021-02-01)Traditionally, the main focus of evaluation in universal electricity access problems has been cost. However, additional criteria such as increasing renewable penetration due to environmental concerns or grid penetration ... -
Trading off health and financial protection benefits with multiobjective optimization
(John Wiley & Sons Ltd., 2020-10-18)Countries which are introducing a system of Universal health coverage have to make a number of key tradeoffs, of which one is the tradeoff between the level of coverage and the degree to which patients are exposed to ...
