Person: GERGİN, ZEYNEP
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Dr. Öğr. Üyesi
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GERGİN
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ZEYNEP
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Publication Open Access A New Organizational Agility Assessment Approach Applied in the Logistics Industry(Melih Topaloğlu, 2022) GERGİN, ZEYNEP; AK, MEHMET MİRAÇ; ÇOLAK, EREN; KAYALAR, MUSTAFA; YAVAŞOĞLU, CAN DENİZPurpose – Today, the variable and numerous demands from customers, changing market conditions and the depletion of resources have made agile working methods more necessary than in the past. In this study, it is aimed to increase the awareness of the concept of agility in companies and to accelerate the agile transformation processes. Design/Methodology/Approach – In this research study, a new measurement scale is developed to assess the current agility levels of the companies operating in logistics sector. The new instrument measures the agility levels of seven business processes for eight components of agility and an aggregated level for company agility score is identified. The detailed questionnaire, which is composed of 51 questions, is applied to 4 companies operating in the logistics sector, differing in size and structure, and their current agility level is evaluated. The weights for business processes and agility component are also defined sector based via Analytic Hierarchy Process (AHP) during the calculation of the final agility score. Due to the detailed structure of the tool, the results gave opportunity for a detailed analysis of the strengths and weaknesses of the business processes. Hence, custom recommendations could be made in order to improve the agility level of the company. Findings – It is seen that there are common elements like technology and innovation, that are highly effective on agility for every company studied, as well as there are prior elements to be focused that differ with the size and structure of the company. It is also concluded that companies need to be more agile as their operation size increases and they can meet these needs with managers who have an innovative perspective. Discussion – This study has developed its own methodology, its own research tool and recommendations, unlike previous studies in the field of agility. Aiming to bring a new link to the academic chain with these features, this project can shed light on more diverse studies in the field of agility.Publication Metadata only A Comparative Sectoral Analysis of Industry 4.0 Readiness Levels of Turkish SMEs(Springer Science and Business Media Deutschland GmbH, 2021) EMİR, OĞUZ; GERGİN, ZEYNEP; YÜKSEKTEPE, FADİME ÜNEY; Dündar, Uğurcan; Gençyılmaz, Güneş M.; Çavdarlı, Ali IhsanThe concept of Industry 4.0 brings new standards and has an essential impact on business models, work organizations, and processes. Nowadays, companies are enforced to perform such challenges as meeting personal customer requests, flexibility, responsiveness, customer-oriented solutions, and delivering continuous value to survive in the competitive market. The most innovative companies are resourceful to integrate new digital tools into their business models by following initial trends. For Small and Medium-Sized Enterprises (SMEs), adopting these new industrial challenges, and responding to them quickly is vital when it is considered that they have 99.8% of the enterprise share of Turkey. To do so, an intensive effort is needed to integrate Industry 4.0 applications within the enterprises. It has been suggested in the literature that manufacturing organizations should begin with understanding their current level of maturity by defining their strengths and weaknesses. Further, a significant effort is required with the collaboration of government, academia, and industry leaders to guide enterprises for improving their capabilities in an objective and standardized manner. Despite the diversity of approaches directed to Industry 4.0 concepts, it is not easy to find a study that measures how the manufacturing sector is adopting Industry 4.0 and compares manufacturing sectors with each other. To this end, broad research is initiated in March 2018 to identify the current situation of SMEs in Turkey. In this paper, it is intended to extend the study by providing a comparative sector analysis for manufacturing SMEs in Turkey in terms of Industry 4.0 transformation. Possible action plan suggestions are presented according to the results obtained at the end of the paper. © 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.Publication Open Access Yalın Sistem Tasarımı İçin Simülasyon Destekli Değer Akış Haritalama Uygulaması(TMMOB Makina Mühendisleri Odası, 2021) EMİR, OĞUZ; GERGİN, ZEYNEPİşletmeler, küresel rekabette hayatta kalabilmek için, üretim kaynaklarını daha iyi kullanarak verimliliklerini arttırmak zorundadır. Bu sebeple, katma değerli olmayan faaliyetlerinin ortadan kaldırılması ve süreçlerde sürekli iyileştirme yapılması yoluyla, değer yaratmalarına ve müşterilerinin gereksinimlerini karşılamalarına yardımcı olan yalın yönetim ilkelerini giderek daha fazla uygulamaktadırlar. Bu çalışma, hızlı tüketim ürünleri sektöründe faaliyet gösteren global ölçekteki bir üretim şirketinin, Türkiye tesisine ait paketleme hattında uygulanan bir yalın sistem tasarımı örneğidir. Firma 150’den fazla ülkeye şekerleme üretimi ve dağıtımı yapmaktadır ve söz konusu paketleme hattı bu ürünler için çalışmaktadır. Bu çalışmada üretim sisteminde bulunan paketleme hatlarının performansını arttırmak amaçlanmıştır. Bunun için hatlar yalın yönetimin 7 başlık altında grupladığı israf kalemleri – gereğinden fazla üretim, gereksiz işlemler, fazla stok, hatalı üretimler, taşımalar, gereksiz hareketler ve beklemeler – açısından incelenerek israfları azaltacak şekilde yeniden dizayn edilmiştir. Çalışma, süreç adımlarının mevcut durumdaki genel hat kullanım oranları ve operasyon verimliliklerinin belirlenmesi, Mevcut Durum Değer Akış Haritası (DAH) ile israf kalemlerinin görsel olarak tanımlanması ve istatistiksel süreç kontrol yöntemleri ile analizi ile başlar. Daha sonra, talep miktarı ve termin süresi parametrelerine bağlı olarak hat verimliliğini arttıracak iyileştirme önerileri belirlenir ve değerlendirilen önerilerin hesaplanan sonuçları gelecek durum DAH'ları ile sunulur. Bu çalışmada ayrıca, DAH metodunu desteklemek ve alternatif iyileştirme senaryolarını karşılaştırmak amacıyla Arena yazılımı kullanılarak sistemin simülasyon modeli geliştirilmiştir.Publication Metadata only A Quality Value Stream Mapping Study in a Knitwear Manufacturer(Springer Science and Business Media Deutschland GmbH, 2024) GERGİN, ZEYNEP; KILINÇ, ARDA SEDEN; AKSU, OZAN İBRAHİM; AKALIN, ARDA BURAK; ALBAYRAK, ABDÜLBAKİ; GÜNEŞ, SALİHThe ready-made clothing industry is one of the sectors that has a high share in export and has a direct impact on our country's economy. Today, the increase in production diversity provides consumers with the chance to choose between alternatives and creates competitive environment for businesses that strive to meet consumer needs at the highest level. In other words, being able to quickly meet the customer's desired quality product at the desired price is as important as producing the product. In this case, businesses are faced with a production process that requires low cost, in which the variety of models and the quality of goods increased, by using the existing resources of the enterprises in the most efficient and flexible way. With this motivation, a case study is implemented for Narin Triko which has an important export market share. Great emphasis is placed on quality control procedures in the company as the customers are global brands, and this leads to more handling of a product and additional number of quality controls. While this approach ensures a higher degree of quality, it also slows down production, requires extra labour, increases lead times and generates more waste. Consequently, this study aims to identify the 7 waste items of lean production and make suggestions to reduce as appropriate. A newly proposed method called Quality Value Stream Mapping (QVSM) that integrates quality focus on Value Stream Mapping (VSM) method is applied. QVSM is a model created to address, analyse, visualize, and evaluate specific quality-related problems. It is expected to suggest some changes in the way the processes work and to increase the product quality by determining the process steps that can be improved regarding the reduction of the wastes like, over processing, overproduction, waiting times, work in process, transportations, scrap, rework and inspection costs. The study started by observing and analysing the production process to collect data on flow of information, process and material, and lean wastes. Then the data are processed for drawing the Current State QVSM that integrates quality-related processes such as quality inspections, rework processes and scrapping processes to the VSM showing the lean wastes. Finally, analysing the QVSM and identifying improvements led to drawing the Future State QVSM and proposing the improvement opportunities. Proposed improvements reduced the Non-Value Adding time 42%. Thus, the new lead time would be 13% less than the previous lead time. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.