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Now showing 1 - 4 of 4

Citation - WoS: 10
Citation - Scopus: 20
Minimum Cost Delivery of Multi-Item Orders in E-Commerce Logistics
(Elsevier, 2022-02-01) Muter, İbrahim; Laportece, GilberT; Akyüz, M. Hakan; Erdoğan, Güneş; Laporte, Gilbert
We solve a delivery problem arising in e-commerce logistics. We consider a retailer with an online store and a network of stores operating in an omni-channel strategy. The fulfillment decision for an online order, which contains a number of items, involves the allocation of these items to the stores where they are available and the selection of one store for consolidation of the items into the final package to be dispatched to the customer. The transportation between the stores and the customer is handled by a third-party logistic provider which uses a concave pricing policy based on the distance between the origin and the destination, as well as on the weight of the items. We present an online problem which is defined for a set of orders placed over time, and a mixed integer programming formulation defined for each order. The main characteristics of this problem are that the solution of the formulation for each order impacts those of the subsequent orders, and the problem must be solved in real time. For the solution of the formulation, we propose an iterative matheuristic based on the solution of the set covering model and local search. Computational results on randomly generated instances are provided, which demonstrate that our algorithm is capable of producing high-quality results.
Citation - Scopus: 3
The Ethical Shortlisting Problem
(Elsevier, 2022-02-01) Erdoğan, Güneş
Hiring is a fundamental, frequent activity for all organizations. Hiring decisions have been reported to be subject to conscious and unconscious biases in the literature. The field of Computational Ethics aims to quantify and maximize the ethicality of decisions. This paper attempts to apply Computational Ethics to the shortlisting process in hiring through the use of Linear Programming. Given a set of applicants for a job with numerical qualification values, the author aims to determine weights for each qualification type to compute scores and resulting rankings for each applicant. To this end, Abstract Moral Theories of Utilitarianism, Maximin/Leximin, Egalitarianism, and Prioritarianism are utilized and applied to a set of randomly generated applicant data. Computational experiments demonstrate that the models are scalable and return interpretable results. The necessity of a quota-based shortlisting system to alleviate disadvantaged candidates is highlighted. The author recommends the use of the Maximin model and iteratively eliminating the applicant with the lowest score.
Citation - WoS: 60
Citation - Scopus: 82
Locus of Control, Need for Achievement, and Entrepreneurial Intention: a Moderated Mediation Model
(Elsevier, 2022-07-01) Tuncer, Büşra; Uysal, Şenay Karakuş; Şahin, Faruk; Karadağ, Hande; Uysala, Senay Karakus
Applying social cognitive career theory (Lent, Brown, & Hackett, 2002) to entrepreneurship, this paper addresses the effects of locus of control and need for achievement on entrepreneurial intentions, and whether the effects are mediated by entrepreneurial self-efficacy and vary according to sex. The participants were 111 students enrolled in the business administration program in Turkey. Using longitudinal survey data, the research model was tested with the moderated mediation procedure suggested by Hayes (2013). The findings showed that entrepreneurial self-efficacy mediated the relationship between locus of control and entrepreneurial intention, as well as the relationship between need for achievement and entrepreneurial intention. Moreover, the conditional indirect analysis showed that the effect of locus of control on entrepreneurial intention depended on sex, with the effect of locus of control being greater for men. By showing empirical evidence for the usefulness of social cognitive career theory to entrepreneurship, our research adds to current literature. Implications for practice and recommendations for future research are discussed.
Citation - WoS: 45
Citation - Scopus: 54
Sharing Is Caring: Toward a Model of Proactive Caring Through Shared Leadership
(Elsevier, 2015-09-01) Manz, Charles C; Courtright, Stephen; Pearce, Craig L; Houghton, Jeffery D; Stewart, Greg L
In this paper we address an age-old expression - "sharing is caring." We offer a model and propositions suggesting that shared leadership proactively increases group-level caring and ultimately group-level performance within organizations through two key mediating mechanisms - psychological empowerment climate and group solidarity. In addition, we identify collaborative capacity and collaborative context as two potential moderators of the relationships between shared leadership and the two mediators. We conclude by exploring the implications of our model for both research and practice. (C) 2014 Elsevier Inc. All rights reserved.

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