Erişime Açık

N-person grey game

Erkan KÖSE

Purpose – One important assumption in the conventional cooperative game theory is that payoffs are assumed to be deterministic. In terms of the players’ cognitive ability of the realistic world, this is a very strict assumption. The classical game theory can find no way out when a particular game circumstance involves uncertainty, such as limited knowledge, small sample, and inadequate information, the payoff values of the game can only be described with interval grey numbers. The paper aims to discuss these issues. Design/methodology/approach – In this study the concept of N-person grey games ...Daha fazlası

Makale/Derleme 2015 KYBERNETES 14 Görüntülenme

Multy Variable Grey Method For Multy Point Deformation Analysis Çok Noktalı Deformasyon Analizi İçin Çok değişkenli Gri Sistem

Erkan KÖSE

Grey theory is one of the methods used to study uncertainty. The uncertain systems characterized by small sample and poor information are the study object of grey system theory. Multivariable grey prediction models are part of grey forecasting system. They are presented if there are mutual relations among the factors in the system. They believe that all the influencing factors are not independent of each other and should be regarded as a whole. In multivariable grey forecasting models, the future value of a variable is tried to be forecasted considering the other influential factors in the sys ...Daha fazlası

Bildiri 2018 Fırat University Turkish Journal of Science & Technology13 ( 1 ) , pp. 6 - 68 7 Görüntülenme

Erişime Açık

Project staff scheduling with theory of coalition

Oğuzhan Ahmet ARIK | Erkan KÖSE

Project scheduling has been still one of the hottest topics in the management area. The goal of traditional project management is to complete the project at the earliest possible time in accordance with the available resources without violating priority relations of the activities involved. Unlike traditional project management, this study deals with the possibility of a coalition among the staf available to accomplish tasks of the project. The tasks can be fulflled by more than one staf members. Staf’s coalition shortens the completion time of the tasks. A natural problem that arises in this ...Daha fazlası

Makale/Derleme 2019 GROUP DECISION AND NEGOTIATION 12 Görüntülenme

Erişime Açık

Locating unmanned aircraft systems for multiple missions under different weather conditions

Erkan KÖSE

Motivated by the increasing civilian use of Unmanned Aerial Vehicles (UAVs), this paper considers the simultaneous location and routing of UAVs for multiple missions and diferent weather conditions. We include modeling and computational experience inspired by requirements for air surveillance by the Turkish government’s public agencies. We model these demands in multiple mission areas and consider the impact of diferent weather conditions on the ability to employ UAVs from diferent geographic locations. We formulate the problem as a two-stage stochastic integer linear program with recourse and ...Daha fazlası

Makale/Derleme 2019 Operational Research 5 Görüntülenme

Mixed integer programming approach for seasonal anomalies in stock markets: A case study for BIST

Oğuzhan Ahmet ARIK

This paper proposes a mixed integer programming approach for seasonal anomalies in stock markets and presents a case study for the XU030 index in the stock market of Istanbul Stock Exchange (BIST). Stock markets are significant for economies of countries all over the world. Investors get economical wealth or lose some of their investment by selling and buying stocks. Therefore, buying and selling times of stocks are so important. This paper investigates a well-known effect called as ‘Sell in May and Go Away’ by proposing a MIP approach that searches best times for buying and selling of stocks ...Daha fazlası

Makale/Derleme 2018 New Trends and Issues Proceedings on Humanities and Social Sciences 3 Görüntülenme

Çok atamalı-kapasitesiz p-adü medyan probleminin yapay arı kolonisi algoritmasıyla çözümü

Betül YILDIRIM

Bildiri

Bildiri 2019 39. Yöneylem Araştırması ve Endüstri Mühendisliği Kongresi, Başkent Üniversitesi/Ankara ( Optimization ) , pp. 8 - 81 11 Görüntülenme

A hybrid group MCDM method based on IFS and GRA for gren suplier selection

Erkan KÖSE

Bildiri

Bildiri 2017 X International Logistics & Supply Chain Congress 2012 Proceedings , pp. 1 - 157 5 Görüntülenme

Several issues facing the designer of economic policies

Erkan KÖSE

Bildiri

Bildiri 2018 Pennsylvania Economic Association 2018 Conference Proceedings , pp. 4 - 50 5 Görüntülenme

İki aşamalı tedarik zinciri koordinasyonunun bulanık talep altında analizi

Gülçin CANBULUT

Çalışmada; bir tedarikçi ve bir perakendeciden oluşan iki aşamalı bir tedarik zinciri yapısı talep değişkeninin bulanık parametre olması durumunda incelenmiştir. Tedarik zinciri üyelerinin her birinin farklı hedefleri bulunmakta ve kendi performanslarını optimum yapmayı istemektedirler. Bu sebeple tedarik zinciri üyeleri arasındaki koordinasyonun sağlanması gerekmektedir. Bu koordinasyona göre tedarik zincirleri; merkezi ve merkezkaç tedarik zincirleri olarak değerlendirilmektedir. Çalışmada merkezi ve merkezkaç tedarik zinciri modelleri için talep parametresinin bulanık değişken olması şartıy ...Daha fazlası

Makale/Derleme 2019 JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY 8 Görüntülenme

Performance Evaluation of a Two-stage Supply Chain Under Fuzzy Environment

Gülçin CANBULUT

In this paper, performance evaluation of a two-stage supply chain which consists of a supplier and a retailer under uncertainty environment is examined. In the literature; many studies have been investigated on supply chain performance analysis in uncertainty environment and demand parameter is an essential data on these analyses. When there is sufficient data about demand, it is easy to construct probability distribution of demand. However, in the absence of enough historical data, it is impossible to construct the probability distribution. The demand parameter is intuitively determined and s ...Daha fazlası

Makale/Derleme 2018 JOURNAL OF MULTIPLE-VALUED LOGIC AND SOFT COMPUTING 6 Görüntülenme

Mixed integer linear programming approach for seasonal anomalies in stock markets: A case study for BIST

Oğuzhan Ahmet ARIK

This paper proposes a mixed integer programming approach for seasonal anomalies in stock markets and presents a case study for the XU030 index in the stock market of Istanbul Stock Exchange (BIST). Stock markets are significant for economies of countries all over the world. Investors get economical wealth or lose some of their investment by selling and buying stocks. Therefore, buying and selling times of stocks are so important. This paper investigates a well-known effect called as ‘Sell in May and Go Away’ by proposing a MIP approach that searches best times for buying and selling of stocks ...Daha fazlası

Bildiri 2018 7th World Conference on Business, Economics and Management (BEM-2018) , pp. 1 - 28 5 Görüntülenme

N kişili bulanık oyunlar

Gülçin CANBULUT | Erkan KÖSE

Bildiri

Bildiri 2018 Yöneylem Araştırması/Endüstri Mühendisliği 38.Ulusal Kongresi 6 Görüntülenme

Detaylı Arama

Filtreler

Koleksiyon [20]

İlgili Araştırmacılar [9]

Tam Metin [2]

Tür [5]

Yazar [10]

Alt Tür [2]

Alt Tür 1 [2]

Konu Başlıkları [19]

Bilimsel Araştırma Etkinlikleri [1]

Açık Erişim Tarihi [7]

Tarih [8]

Dizin Platformu [5]

İsmi Geçen [10]

WOS Kategorileri [11]

Projeler [1]

Erkan KÖSE

Erkan KÖSE

Oğuzhan Ahmet ARIK | Erkan KÖSE

Erkan KÖSE

Oğuzhan Ahmet ARIK

Betül YILDIRIM

Erkan KÖSE

Erkan KÖSE

Gülçin CANBULUT

Gülçin CANBULUT

Oğuzhan Ahmet ARIK

Gülçin CANBULUT | Erkan KÖSE