Browsing by Author "Madenoğlu, Fatma Selen"

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Industry 4.0: A Bibliometric Analysis
(Nova Science Publishers, Inc., 2023) Madenoğlu, Fatma Selen
With the emergence of Industry 4.0, organizations' interest in digital transformation has significantly expanded to remain competitive. As a result, organizational digital transformations have appeared. Nowadays, machine learning is built into every device, and automation has taken center stage. This paper presents a bibliometric study and in-depth research on the most recent advancements in the "Industry 4.0" field. The top 10 most cited publications and authors, main research areas, publications, and countries are all examined as part of the bibliometric study, which also extracts data on the overall number of publications and citations. The organizational transformation highlighted in the publications is then examined after a detailed analysis of the most cited publications. In this paper, the publications on Industry 4.0 are examined and in addition, publications that deal with Industry 4.0 and organizational transformation are presented. © 2023 Elsevier B.V., All rights reserved.
COVID-19 Sürecinde Hareketlilikte Eşitsizlik: Küresel ve Yerel Analiz
(Abdullah Gül Üniversitesi, Sosyal Bilimleri Enstitüsü, 2022) Gençaslan, Elif; Gençaslan, Elif; Türk, Umut; Madenoğlu, Fatma Selen
This thesis analyzes mobility patterns during the Covid-19 pandemic from a global and local perspective. The global framework includes 37 European countries and the local framework comprises 81 Turkish cities. The study follows the daily mobility trajectories of people from February 2020 to January 2022. The analyzes are conducted to understand the economic opportunities available in countries -at a macro scale- that facilitate or hinder the 'proper' mobility behavior of individuals while focusing on the captive commuters, i.e., the share of the population who need to commute to the work despite the risk of infection and governmental policies. The results indicate that the workforce in regions with higher GDP per capita, education level, and life expectancy at birth was able to reduce their workplace mobility higher than commuters in areas with low income, education level, and life expectancy at birth. Therefore, unprivileged populations were exposed to higher health risks against rapid Covid-19 transmission in Europe and Turkish cities.
Portfolio Optimization: An Application on the BIST-30 Index
(Peter Lang AG, 2023) Madenoğlu, Fatma Selen; Ünlüsoy, Ömer Faruk
Citation - Scopus: 3
Solving Optimization Problem With Particle Swarm Optimization: Solving Hybrid Flow Shop Scheduling Problem With Particle Swarm Optimization Algorithm
(Springer, 2021) Madenoğlu, Fatma Selen
The flow shop scheduling problem is widely discussed in the literature since it is frequently applied in real industry. This paper presents a variant of flow shop scheduling problem with parallel machines. The proposed problem includes multistage and identical parallel machines at each stage, and the sequence-dependent setup time and transportation time are considered. The objective function is minimization of makespan. The particle swarm optimization algorithm (PSO) is addressed to solve the problem and compared with genetic algorithm and heuristics. The benchmark instances are generated to demonstrate the performance of the PSO. The numerical results show that the PSO significantly outperforms the comparison set. © 2021 Elsevier B.V., All rights reserved.
Citation - Scopus: 1
Managing Transportation in Supply Chain: Metaheuristics for Solving a Capacitated Fixed-Charge Transportation Problem
(IGI Global, 2021) Madenoğlu, Fatma Selen
Supply chain management is the managing of all processes of goods, services, and information from suppliers to customers. Transportation network design is an important part of effective supply chain management. This chapter presents the two-stage fixed-charge transportation problem in a supply chain to minimize the total cost containing the opening cost of distribution centers, transportation cost from manufacture to distribution centers and from distribution centers to customers, and fixed cost for transportation from distribution centers to customers. There are the capacity constraints on distribution centers in order to consider real life situations in this chapter. A constructive based algorithm and a population-based algorithm are proposed to solve this complex optimization problem. Taguchi experimental design is applied for determining the best combinations of parameters. The experimental studies are conducted to compare the performance of the proposed algorithms according to solution quality. © 2022 Elsevier B.V., All rights reserved.
HİBRİT AKIŞ TİPİ ÇİZELGELEME PROBLEMİNİN PARÇACIK SÜRÜ OPTİMİZASYON ALGORİTMASIYLA ÇÖZÜMÜNE BAŞLANGIÇ POPÜLASYONUN ETKİSİ
(Marmara Üniversitesi, 2020) Madenoğlu, Fatma Selen
Bu çalışmada, birden fazla aşama, her aşamada özdeş paralel makineler ve makinelerde işlenen işler arası geçişlerde sıraya bağlı hazırlık süresini içeren hibrit akış tipi çizelgeleme problemi sunulmuştur. Metasezgisel yöntemler bu karmaşık problemlerin çözümünde tercih edilmektedir. Metasezgisel yöntemlerde optimum çözüm ararken, oluşturulan başlangıç çözümlerin nihai sonuca etkisi oldukça önemlidir. Hibrit akış tipi çizelgeleme probleminin çözümüne önerilen parçacık sürü optimizasyon (PSO) algoritmasına farklı başlangıç çözüm oluşturma yöntemlerinin etkisi incelenmiştir. Dört farklı başlangıç çözüm oluşturma yaklaşımı sonuçları karşılaştırılmıştır. Nawaz, Enscore, Ham (NEH) sezgiselinin diğer yöntemlerden daha etkili olduğu sonucuna ulaşılmıştır.
Ulusal Gönüllü Değerlendirme Raporları Üzerinden Sürdürülebilir Kalkındırma Hedeflerine Ulaşma Analizi
(2024) Avcı, Tümay; Madenoğlu, Fatma Selen
2030 Sürdürülebilir Kalkınma Gündemi yoksulluk, eşitsizlik ve iklim değişikliği gibi kritik küresel sorunları ele almak üzere 17 Sürdürülebilir Kalkınma Hedefi (SKH) belirlemiştir. Bu hedeflere yönelik ilerlemeyi izlemek için ülkeler, SKH uygulamalarını niteliksel ve niceliksel olarak değerlendiren Gönüllü Ulusal Değerlendirme (VNR) raporu sunmaktadır. Bu çalışma, 2023 ve 2024 yıllarında sunulan VNR raporlarını kapsamlı bir şekilde analiz etmekte ve bu raporların SKH'lere yönelik ilerlemeyi ne ölçüde yansıttığını incelemektedir. Gelişmiş makine öğrenimi algoritmalarıyla desteklenen çok katmanlı bir metin sınıflandırma modeli kullanılarak, VNR raporlarının belirli SKH'larla uyumu kategorize edilmiş ve değerlendirilmiştir. Çalışma, bölgesel farklılıklar, hedefe göre performans ve raporlama çerçevelerinin geliştirilmesi hakkında veriye dayalı öneriler sunmaktadır. Bulgular, SKH 5 (Toplumsal Cinsiyet Eşitliği) ve SKH 13'ün (İklim Eylemi) birçok ülkede VNR raporlarında önceliklendirildiğini, SKH 17'nin (Hedefler için Ortaklıklar) ise VNR raporlarında yeterince temsil edilmediğini göstermektedir. Bununla birlikte, VNR raporlarında hedefler arasındaki olumlu ve olumsuz ilişkiler ele alınmıştır. Bu sonuçlarla, karar alıcılar için daha etkili politika geliştirme, uluslararası işbirliği ve veri odaklı karar alma süreçlerine yönelik öneriler sunulmaktadır.
Green Vehicle Routing Problem
(Nova Science Publishers, Inc., 2024) Madenoğlu, Fatma Selen
The decrease in natural resources, the fact that greenhouse gases cause global warming, and consumers' sensitivity to environmental, and health issues have forced businesses to develop sustainable strategies. The idea of "green logistics," which is focused on carrying out economically sensible environmental activities when producing goods and services, has gained significant relevance for this reason. Transportation activity is one of the most basic costs of logistics activity. Due to the fuels used in transportation and the greenhouse gases released, it has become vital to develop and implement sustainable and green energy policies in logistics activities. Green logistics has become one of the areas that needs to be emphasized. A metaheuristic is presented and proposed to solve the vehicle routing problem, which is a type of vehicle routing problem involved in optimizing simultaneous pickup and delivery considering carbon emissions in logistics activities. A green logistics approach is presented in order to guide businesses that aim to produce services in accordance with sustainable and green energy policies. © 2024 Elsevier B.V., All rights reserved.