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Barriers in Cement Industry towards Circular Economy
(2024) Aydın, Uğur; Ada, Erhan; Mangla, Sachın Kumar
Cement, serving as the primary ingredient in concrete, plays a pivotal role in industrial development and societal progress. However, its production is marked by high energy consumption, environmental pollution, and significant CO2 emissions. This study adopts the perspective to explore the challenges and barriers facing the cement industry in transitioning to a circular economy. It aims to define the causal relationships among these barriers and identify practical implications necessary to overcome them. To achieve a comprehensive understanding, the study integrates results from a systematic literature review and focus group study. The DEMATEL method is employed to elucidate the causal relations between various factors. A total of 18 barriers, organized into six clusters, have been identified. These findings are intended to inform managerial decisions and accelerate the adoption of circular economy applications in the cement business. While existing studies on circular economy in cement focus on technical and laboratory aspects related to the use of alternative materials, this study stands out by examining and revealing the barriers hindering the cement sector's transition to circular economy practices, making it a novel and unique contribution to the field. Keywords: sustainability, circular economy, cement, barriers, challenges
Etkili hizmet tasarımı oluşturmada büyük veri analitiğinin etkisi
(2023) Kaçar, Tuğçe Bilgiç; Ada, Erhan
Competition between businesses is a system that has existed since ancient times. Today, the competitive environment is no longer just competition, but competition in supply networks. While the amount of data used in the field of the supply chain is increasing rapidly, systems that are thought to be smart and fast have started to be developed. Big data analytics covered in this study is one of the most effective resources for solving business problems. In this study, examining the effect of big data analytics on creating effective service designs is discussed. Statistical data analysis methods were used to examine the relationship between statistical analyzes, SPSS program and study variables. After examining the sociodemographic profiles of the participants, the descriptive analysis results of bda management capacity, service quality scale and sub-dimensions were examined. While examining the level differentiation of the variable groups according to the personal information of the participants, 'independent sample t-test' was used in the comparison of the variables that provided the assumption of normal distribution, and 'ANOVA' was used in the comparison of the three variables. In addition, while testing the relationship between BDA management skill, service quality scale and its sub-dimensions, 'Pearson correlation' analysis, which is one of the parametric test methods, was preferred and all results were evaluated in terms of statistical significance at the p<0.05 level. In addition, the results were obtained from the correlation analysis, and the effects between the scales were examined by regression analysis. Statistical significance was evaluated at the p<0.05 level in all the results obtained. In the demographic information section of the questionnaire used in the study, there are questions about the main sector of activity, the boundary conditions of the field of activity, the number of employees, the operating period of the company and the duration of the current job. Study variables include BDA management capacity and service quality. A 5-point Likert scale (1=strongly disagree - 5=strongly agree) was used to answer the questions used in the research questionnaire. The findings of the study were discussed, and recommendations were made. keywords: big data, effective service design, supply networks.
Havalimanı operasyon yönetiminde net sıfır emisyonlu hidrojen çözümlerine geçiş: Airport örneği
(2025) Sezer, Mürüvvet Deniz; Ada, Erhan; Kazançoğlu, Yiğit
Hidrojene geçişin amacı, fosil yakıt bağımlılığını azaltarak daha sürdürülebilir, düşük karbonlu ve enerji güvenliği yüksek bir sistem geliştirmektir. Güneş enerjisi gibi yenilenebilir enerji kaynakları ile üretilen hidrojen, sürdürülebilir kalkınma hedefleri ile de doğrudan ilintilidir. Özellikle yenilenebilir kaynaklardan üretilen yeşil hidrojen sıfır karbon emisyonludur ve iklim değişikliğiyle mücadelede kritik öneme sahiptir. Ulaştırma sektörü gibi karbon yoğun sektörlerde hidrojen etkili bir çözümdür. Hidrojen üretimi, depolama, taşıma ve altyapı yatırımlarıyla yeşil kalkınmaya katkı sağlamaktadır. Ancak hidrojen sisteminin oluşturulmasındaki en önemli engellerinden biri yüksek yatırım maliyetleridir. Özellikle gelişmekte olan ülkelerde, yani geçişin daha ilk aşamasında olan ülkelerde, yeşil hidrojen üretimi, taşıma, depolama ve altyapı yatırımları oldukça pahalıdır ve hidrojen konusunda net politikalar, hedefler ve teşvik mekanizmaları eksik ya da yeni gelişmektedir. Bu kapsamda bu çalışmanın amacı havaalanı yer hizmetlerinde hidrojene geçiş için fayda maliyet analizini yapmaktır. Ayrıca bu çalışma hidrojene geçişte, sürdürülebilirliğin üç saç ayağının başarılmasını sağlamayı hedeflemektedir. Yeşil hidrojene geçişin ekonomik, sosyal ve çevresel etkileri analiz edilmiştir. Bu dönüşümün en önemli etkisinin çevresel boyut üzerinde olacağı düşünülse de uzun dönemde hem sosyal hem de ekonomik fayda sağlayacağı görülmüştür. Sonuçlara göre hidrojene geçişin önemli ölçüde yatırım maliyeti gerektirdiği yadsınamaz, fakat hidrojene geçişin uzun dönemde rekabet avantajı sağlayacağı ve özellikle karbon emisyon vergileri de dikkate alındığında karlı bir yatırım olduğu görülmüştür. Sonuçlar baz alınarak, hidrojen ekosisteminin önemli paydaşlarından olan endüstri ortakları, politika yapıcılar, yerel ve küresel otoriteler ve araştırma kurumlarının bu hedeflerinin başarılmasındaki rolü tartışılarak çeşitli öneriler geliştirilmiştir.
Internet of Things Application in an Agricultural Food Supply Chain to Reduce Food Loss and Waste
(2022) Sayar, Asya Gizem; Ada, Erhan
In this study, in order to prevent or reduce food loss and waste throughout the food supply chain, it has been examined to what extent corporate companies that produce and export perishable agricultural products benefit from the Internet of Things technology in their operational activities and whether they will include such applications in their future investment plans. The effect of the Internet of Things technology in reducing food waste and loss along the supply chain was examined by scanning the literature and conducting a 20-question survey including Yes/No, Open-Ended, and 5-point Likert Scale question types. It is an undeniable fact that companies attach importance to the idea of 'less food loss and waste' with their sensitive attitudes towards the use of natural resources, their investments to reduce the damage they cause to the environment throughout the supply chain, and their sustainable future goals. Although companies benefit from some Internet of Things applications to ensure food safety in certain processes of the supply chain, reduce or prevent food loss and waste in economic and social terms, to invest in an integrated Internet of Things technology that covers all processes and to make loss prevention or reduction processes more efficient, awareness studies should be carried out to companies and investment incentives should be provided by the state.
Sürdürülebilir yalın tedarik zinciri yönetimi kapsamında engellerin analizi: KOBİ'lerde uygulama
(2023) Takcı, Ebru; Ada, Erhan
In the research, 'What are the barriers to Sustainable Lean Supply Chain (SLSC) Management in SMEs?' and 'How do the barriers encountered in Sustainable Lean Supply Chain (SLSC) implementations affect each other structurally?' within the framework of the problematic, it is aimed to examine the barriers in SMEs in Sustainable Lean Supply Chain (SLSC) Management. Within the framework of this purpose, an in-depth literature review was carried out at the stage of determining the elements constituting the subject of the research. As a result of the literature review, 15 concrete elements that constitute 85% of the barriers in Sustainable Lean Supply Chain (SLSC) Management were obtained. The DEMATEL method was used to examine the importance and impact level of the obtained elements. In this direction, the companies working on sustainability in Kayseri and sector-based clustering of ISO first and second 500 companies operating in Kayseri in 2022 was carried out and senior executives working on sustainability were asked to compare 15 barriers in pairs. The findings show that among the barriers in Sustainable Lean Supply Chain (SLSC) Management in SMEs, strategies are at the highest level. In addition, the barriers in Sustainable Lean Supply Chain (SLSC) Management in SMEs are examined in two ways as affecting and affected. It has been determined that Laws/Standards/Regulations/Legislation are the most important influencing factor. It has been determined that the most important factor affected for SMEs is supply/suppliers. As a result of the findings obtained within the scope of the research, various suggestions have been developed for the relevant literature and practitioners. Keywords: Sustainability, Lean, Supply Chain Management, Barriers, SMEs
Tarımsal kooperatiflerin gıda tedarik zincirleri bağlamında döngüsel ekonomi ve sürdürülebilirlik üzerine etkisi
(2021) Balcıoğlu, İrem; Ada, Erhan
Bu çalışma, tarımsal kooperatiflerin gıda tedarik zincirleri bağlamında döngüsel ekonomi ve sürdürülebilirlik üzerindeki etkisini incelemektedir. Tarımsal kooperatiflerin bu iki faktör üzerindeki etkisi, literatür taranarak ve anket çalışması yapılarak incelenmiştir. 14 tarım kooperatifi, 2 üretici birliği, 1 tarım kooperatifleri birliği ve su ürünleri kooperatifleri birliğinden katılımcılar ile yapılan Evet/Hayır, açık uçlu ve 5 puanlık Likert ölçekli soruların yer aldığı 25 soruluk anket çalışmasına göre; tarım kooperatifleri sürdürülebilirliğe ve döngüsel ekonomiye katkıda bulunmaktadır: ancak gelecekte katkı miktarını artırmak için daha fazla farkındalık, yeşil teknoloji kullanımı ve teşviklere ihtiyaç vardır. Bu kapsamda, bu konuların çözümüne yardımcı olması için bir Tarımsal Kooperatif Tedarik Zinciri Modeli önerilmiştir.

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