Sivil Havacılık Yüksekokulu

Permanent URI for this collectionhttps://acikerisim.samsun.edu.tr/handle/123456789/32

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Havacılık sektöründe yer hizmetleri eğitimlerinin standardizasyonuna yönelik bir çalışma: üniversite-sektör işbirliği mümkün mü?.
(Pearson Journal of Social Sciences & Humanities, 2021) Yılmaz, Mustafa Kemal
Havacılık sektöründe mesleki eğitimlerin birtakım standartlara ve sertifikalandırma süreçlerine bağlı olması, Türkiye’deki üniversiteler tarafından verilen havacılık eğitimlerinin bu gereklilikleri ne ölçüde karşıladığı sorusunu akla getirmektedir. Bu kapsamda Türkiye’de yer hizmetleri alanında havacılık eğitimi veren üniversiteler araştırmanın ana konusunu oluşturmaktadır. Bu çalışma ile; havacılık sektöründe yer hizmetleri alanında üniversite-sektör işbirliğini sağlayabilmek ve istihdam sürecine katkı sunabilmek için eğitim süreçleri araştırılmakta ve bir model önerisi sunulmaktadır. Bu minvalde, yer hizmetleri alanında üniversitelerin mesleki eğitim verebilmek için hangi gereklilikleri karşılaması gerektiği, eğitim süreleri ve eğitim içeriklerine ilişkin detaylı bir içerik analizi yapılmıştır. Çalışmanın, yer hizmetleri alanında insan kaynaklarının, sektörün ihtiyaçlarına uygun bir şekilde uluslararası ve ulusal standartlara uygun olarak yetiştirilmesi, kamuya ve özel şirketlere ait tüm kaynakların etkin ve verimli bir şekilde kullanılabilmesi, istihdam sürecinin tüm paydaşlar özelinde kolaylaştırılabilmesi için katkı sağlaması beklenmektedir. Vocational training in the aviation industry depends on standards and certification processes. Currently, the question arises to what extent the meets the aviation training provided with these requirements by universities in Turkey. In this context, universities lecturing education in the field of ground handling in Turkey are the main subject of the research. With this study; In order to ensure university-sector collaboration in the field of ground handling services in the aviation sector and to contribute to the employment process, training processes are researched and a model proposal is presented. In this context, a detailed content analysis has been made regarding what requirements universities must meet in order to provide vocational training in the field of ground handling services, training periods and training contents. In this respect; this study are expected to contribute to the training of human resources in the field of ground handling, in accordance with international and national standards and with the needs of the sector, to use all resources belonging to public and private enterprises effectively and efficiently, and to facilitate the employment process for all stakeholders.
Havayolu işletmelerinde e-hizmet kalitesi boyutlarının önem düzeylerinin belirlenmesi
(Eskişehir Osmangazi Üniversitesi İİBF Dergisi, 2019) Bakır, Mahmut; Atalık, Özlem
Bilgi teknolojilerinde yaşanan gelişmeler neticesinde ürünlerin dağıtımı internet üzerinden sağlanmaya başlanmış ve havayolu taşımacılığı sektörü de bu gelişmeden fazlasıyla etkilenmiştir. Bu kapsamda seyahat acentalarının sunduğu hizmetlerin payı giderek düşerken, internet kanalı başta düşük maliyetli taşıyıcılar olmak üzere havayolu işletmeleri tarafından yaygın bir şekilde kullanılmaya başlanmıştır. Bu çalışmada havayolu işletmelerinde sunulan e-hizmetlerde kaliteyi etkileyen unsurların önem düzeylerinin belirlenmesi amaçlanmıştır. Değerlendirme aşamasında AHP (Analitik Hiyerarşi Prosesi) yönteminin kullanıldığı bu çalışmada, e-hizmet kalitesi 3 ana kriter ve 13 alt kriterden oluşan hiyerarşik yapıyla ele alınmıştır. Çalışma sonucundan hizmet kalitesi en önemli ana kriter olarak belirlenirken güvenilirlik ve anlaşılabilirlik unsurlarının en önemli alt kriterler olduğu görülmüştür. Önem düzeyi en düşük kriter ise kişiselleştirme olarak belirlenmiştir. Because of developments in information technology, distribution of products has started to be provided over the internet, and the airline industry has been affected too much by this situation. In this context, while the share of services offered by travel agencies has been gradually decreasing, the internet has started to be widely used by airline companies, especially by low-cost carriers. This study aims to determine the importance level of the factors affecting e-service quality provided in the airline industry. In this study, the AHP (Analytic Hierarchy Process) method is used in the evaluation phase. Eservice quality is evaluated by a hierarchical structure consisting of 4 main criteria and 13 sub-criteria. While service quality is determined as the most important main criterion, it is seen that reliability and understandability are found to be the most important sub-criteria. The most insignificant criterion also is personalization.
Determinants of consumer attitudes towards social media advertising: evidence from the Turkish Airline industry
(Studies in Business and Economics, 2022) Bakır, Mahmut; Korkmaz, Hüseyin; Sak, Fatma Selin; Atalık, Özlem
As the prevalence of social media increases, it is considered as an important promotion outlet for the airline industry. The main motivation behind this paper is to identify the determinants of attitude towards social media advertising in the context of the Turkish airline industry. The model of advertising value lies in the theoretical foundation of this paper. Employing a convenience sampling, a questionnaire was completed by 123 users of social media in Turkey. The Partial Least Squares Structural Equation modeling (PLS-SEM) approach was employed to test the hypothesized relationships. Results revealed that informativeness, entertainment, and credibility are positively associated with advertising value, thus affecting attitude towards social media advertising. On the other hand, irritation has no significant relation with advertising value.
Modelling behavioural factors affecting consumers’ intention to adopt electric aircraft: a multi-method investigation
(Sustainability, 2024) Bakır, Mahmut; Itani, Nadine
Electric aircraft are seen as a key option for reducing the environmental footprint of the aviation industry. This research aims to identify the factors that influence Turkish air travellers’ intentions to adopt electric aircraft by building upon the theory of planned behaviour (TPB). A structured online survey was developed to gather cross-sectional data from 217 air travellers using convenience sampling. The data were analysed through a multi-method approach, including structural equation modelling (SEM) for sufficiency analysis and necessary condition analysis (NCA) for necessity analysis. The findings reveal that attitudes, subjective norms, perceived behavioural control, personal moral norms, and green trust positively correlate with the intention to adopt electric aircraft, whereas perceived risk has a negative correlation. Moreover, the NCA indicates that attitudes, subjective norms, perceived behavioural control, personal moral norms, environmental knowledge, and green trust are necessary conditions for the intention to adopt electric aircraft, reinforcing these results. This study is the first empirical attempt to investigate the formation of the intention to adopt electric aircraft, built on both sufficiency and necessity logics.
Exploring virtual goods purchase intentions: anintegratedSEM-NCA approach in online gaming
(Central European Management Journal, 2024) Mkedder, Nadjim; Bakır, Mahmut; Aldhabyani, Yaser; Ozata, Fatma Zeynep
Purpose– Virtual goods consumption has risen dramatically in recent years. Recognizing the benefits of virtual goods in generating revenue for online game companies, marketers strive to understand the motives behind virtual goods purchases. We investigated the direct and indirect effects of functional, emotional, and social values through player satisfaction on purchase intention toward virtual goods among online players. Design/methodology/approach– In total, we surveyed 332 online game players utilizing a structured questionnaire. We employed a multi-analytic approach combining partial least squares structural equation modeling (PLS-SEM) and necessary condition analysis (NCA) to examine the proposed relationships. Findings– The findings show that all dimensions of value and player satisfaction significantly affect the intention to acquire virtual goods. However, social value does not exert a significant effect on player satisfaction. Moreover, we confirmed that player satisfaction mediates the relationships between functional value, emotional value, and purchase intention. Furthermore, NCA results indicated that all predictors in the model are necessary conditions of purchase intention for virtual goods. Originality/value– These findings contribute to an enhanced understanding of purchase intentions among online game players from a symmetric (PLS-SEM) and asymmetric (NCA) perspective by proposing a multianalytic approach.
Exploring intention to travel with eco-friendly airlines: A dual-stage SEM-ANN approach
(Case Studies on Transport Policy, 2025) Zungur, Neşegül; Orhan, Gamze; Bakır, Mahmut
Recently, due to increasing pollution and global warming, eco-friendly consumer behaviors have garnered global interest in the aviation industry. This study aims to investigate the antecedents of the intention to travel with ecofriendly airlines. Building on the Stimulus-Organism-Response (S-O-R) framework, it examines the effects of environmental awareness, green image, and perceived price on the intention to travel with eco-friendly airlines directly and through perceived consumer effectiveness. It also investigates the moderating role of collectivism within the proposed model. Data were gathered from 394 passengers at Erzurum Airport, Turkey, using a selfadministered questionnaire. A dual-stage approach, combining structural equation modeling (SEM) and artificial neural network (ANN) analysis, was employed to examine the relationships. The findings reveal that environmental awareness, green image, and perceived consumer effectiveness positively influence the intention to travel, with perceived consumer effectiveness mediating these relationships. However, collectivism does not moderate the relationship between environmental awareness and perceived consumer effectiveness. The ANN outcomes align with SEM findings, highlighting the strong predictive capability of environmental awareness and perceived consumer effectiveness. This study offers insights to help practitioners in the airline industry better understand how consumers form intentions to travel with eco-friendly airlines.
A bibliometric analysis of airport service quality
(Journal of Air Transport Management, 2022) Bakır, Mahmut; Özdemir, Emircan; Akan, Şahap; Atalık, Özlem
Airports have evolved into key business centers in the last four decades, serving a variety of business models in addition to providing transportation infrastructure. Additionally, service quality, which is critical for airports to maintain a competitive edge, is a major area of research in the aviation literature. This study aims to analyze the existing literature on airport service quality through the bibliometric analysis method and to present a perspective on the literature’s trajectory. Science mapping techniques and performance analysis were applied in this process. R-based Bibliometrix software was used to investigate 100 studies indexed in the Web of Science (WoS) database between 1975 and 2020. Research findings show that the Journal of Air Transport Management leads the literature in terms of publication performance. Researchers from China offer the highest contribution to the literature as a country. In addition, service quality research has largely resulted from collaboration networks. It is expected that an understanding of the research themes that emerge from the scientific mapping technique will guide researchers.
A hybrid analysis of consumer preference for domestic products: combining PLS-SEM and ANN approaches
(Journal of Global Marketing, 2023) Mkedder, Nadjim; Bakır, Mahmut
This study aims to investigate the factors influencing algerian consumers’ willingness to purchase domestic cosmetics products over French imported products. the study employs a hybrid methodology, combining Partial least squares structural equation Modeling (Pls-seM) and artificial Neural Network (aNN) modeling approaches. Data were collected from 237 algerian consumers through snowball sampling and an online survey. the results indicate that consumer ethnocentrism, consumer animosity, product quality judgment, and perceived price significantly influence willingness to buy domestic cosmetic products. the aNN results support these findings, revealing that consumer ethnocentrism is the key predictor factor with the greatest normalized importance ratio. Furthermore, a significant mediating role of product quality judgment was found in the relationship between consumer ethnocentrism, perceived price, and willingness to buy domestic cosmetic products. the study provides insights for marketers interested in the algerian market, helping them to better understand consumer behavior, particularly in the context of cosmetics products. this study is unique in its focus on the assessment of global vs. domestic cosmetic product usage in developing nations such as Algeria.
Application of fuzzy AHP and fuzzy MARCOS approach for the evaluation of e-service quality in the airline industry
(Decision Making: Applications in Management and Engineering, 2021) Bakır, Mahmut; Atalık, Özlem
Airlines today use e-services extensively for marketing activities and the distribution of services. Monitoring and evaluating e-service quality are essential for customers’ satisfaction and thus the success of airlines. This study aims to evaluate e-service quality in the airline industry from the point of view of the consumers. To achieve this, an integrated Fuzzy Analytical Hierarchy Process (F-AHP) and Fuzzy Measurement Alternatives and Ranking according to Compromise Solution (F-MARCOS) approach was proposed to handle the uncertain and imprecise nature of e-service evaluation. In the first stage, e-service quality criteria were prioritized using the F-AHP method. Then, a realworld case study was carried out on scheduled airlines to demonstrate the applicability of the proposed approach using the F-MARCOS method, utilizing a total sample of 395 airline passengers in Turkey. As a result, the top three eservice criteria were found as reliability, understandability, and security. A three-stage sensitivity analysis was also conducted to examine the credibility and stability of the results. This study is the first study to integrate F-AHP and F-MARCOS methods for the first time in literature.
Charting the landscape of customer experience research in the business field: a bibliometric exploration
(Esic Market Economics and Business Journal, 2025) Bakır, Mahmut; Sak, Fatma Selin
Objective: Customer experience is now widely acknowledged as a key factor for achieving sustainable competitive advantage. However, comprehensive research providing a global picture of the scientific knowledge on this topic is limited. This study provides a systematic review of the evolution and structure of customer experience research in business through bibliometric and network analysis. Methodology: A total of 2,035 articles, published between 1984 and 2024, were analysed using the Web of Science (WoS) database. The Bibliometrix R package within the Biblioshiny version was used to analyse the data. Results: The findings reveal a significant increase in publications over time, with emerging topics such as the metaverse, artificial intelligence and omnichannel retailing gaining attention in recent years. Moreover, keyword co-occurrence and co-citation networks identified five and three distinct research clusters, respectively. Limitations: This study is based solely on bibliometric data from the WoS database, and further insights could be gained by incorporating other databases. Practical implications: The study highlights the critical need for managers to understand and strategically implement customer experience co-creation to secure a competitive edge in highly competitive markets.
Examining cross-cultural patterns in customer citizenship behavior: A cross-cultural exploration between Turkish and British airline passengers
(Travel Behaviour and Society, 2024) Bakır, Mahmut; Atalık, Özlem
Customer citizenship behavior (CCB) refers to actions that provide value to companies, such as offering feedback, being patient with disruptions, and assisting other customers. This is especially important in the airline industry, where services are provided collectively in a shared environment. Recognizing that the factors influencing CCB might differ based on national culture is crucial, particularly for the international operations of the airline industry. However, the impact of national culture on shaping CCB in this industry remains unclear. Using three theoretical lenses, namely expectation confirmation theory (ECT), social exchange theory (SET), and cultural dimensions theory (CDT), this study aims to investigate how national culture affects the formation of CCB through the proposed conceptual model. To achieve this, the study gathered responses from 743 passengers—both Turkish (n = 323) and British (n = 420)—using a structured web-based questionnaire. The analysis employed partial least squares structural equation modeling (PLS-SEM) and multigroup analysis (MGA). The results indicated that factors like service quality and value for money have a positive influence on customer satisfaction. Customer satisfaction has a positive impact on behaviors such as giving feedback, advocating for the company, assisting others, and being patient with disruptions. The proposed relationships are also mediated by value for money and customer satisfaction. This study stands as the first effort to investigate how national culture moderates the formation of CCB in the context of the airline industry.
Regional aircraft selection with fuzzy piprecia and fuzzy Marcos: a case study of the Turkish Airline industry
(2021) Bakır, Mahmut; Akan, Şahap; Özdemir, Emircan
Aircraft selection is an important issue in achieving long-term goals in the airline industry. For this issue in which multiple conflicting criteria are involved, the extant literature points to the use of multi-criteria decision-making (MCDM) methods. In this respect, this study aims to propose a systematic and comprehensive framework with a focus on the regional aircraft selection perspective. To achieve this, an integrated fuzzy Pivot Pairwise Relative Criteria Importance Assessment (FPIPRECIA) and fuzzy Measurement Alternatives and Ranking according to the Compromise Solution (F-MARCOS) approach was employed. In this study, in which six regional aircraft alternatives were evaluated according to 14 criteria, data were collected from five decision experts. As a result, it was found that the most pivotal criterion is C33 (Operational Cost), and the least important criterion is C12 (NOx). In addition, CRJ1000 was identified as the most promising regional aircraft alternative. The results of the application were further validated by applying a three-stage sensitivity analysis. The proposed structure is anticipated to assist airline managers in aircraft selection decisions under uncertainty by offering a robust and systematic tool.
Service quality and repurchase intentions in the airline industry: a multiple mediation analysis through customer citizenship behaviour
(Current Issues in Tourism, 2024) Bakır, Mahmut; Atalık, Özlem; Itani, Nadide
Building on expectation confirmation theory (ECT), this study examines the nexus between service quality and consumer repurchase intention in the airline industry, with a particular emphasis on the mediating role of customer citizenship behaviour (CCB). Utilising data from 260 respondents in the United Kingdom, the research employs partial least squares structural equation modelling (PLS-SEM) for the analysis. The indings indicate that service quality has a direct positive effect on CCB and repurchase intention. The study indicates that CCB, manifested through advocacy and tolerance, exerts a significant positive impact on consumer repurchase intention. The study uncovers that advocacy and tolerance behaviours serve as mediators in the relationship between service quality and repurchase intention, while feedback and helping do not play this role. The findings of the study contribute to the literature in the field of CCB and service quality in the airline industry.
Sustainable passenger services and child-friendly airport experience: a case study of Istanbul Airport
(Sustainability, 2024) Yazgan, Bahar; Doğan, Özcan; Bakır, Mahmut; Gün, Devrim
This study explores the concept of child-friendly airports, using Istanbul Airport as a case study to understand how such environments can enhance the travel experience for families with children. Through qualitative research methods, including focus group discussion and in-depth interviews with 12 mothers and 12 field specialists, the research identified key attributes that constitute a child-friendly airport. Building upon the Place Diagram model, the results revealed that a child-friendly airport should prioritize sociability, comfort and image, uses and activities, and access and linkages, aligning with the model’s core themes. The results further identified numerous sub-themes linked to these four themes. Accordingly, airports should offer diverse play areas, family-friendly seating, efficient wayfinding, and high-quality, sustainable materials to create a safe, inclusive, and engaging environment for passengers with children. The study emphasizes the importance of designing airports that cater to the needs of children and their families, contributing to social equity and enhancing the overall passenger experience. These insights can serve as a benchmark for other airports aiming to improve their service offerings for families, supporting sustainable development goals related to reducing inequalities and promoting inclusive, safe, resilient, and sustainable environments. This study represents the first academic attempt focusing specifically on comprehensive services for passengers with children and the broader concept of child-friendly airports.
How to achieve passenger satisfaction in the airport? Findings from regression analysis and necessary condition analysis approaches through online airport reviews
(Sustainability, 2022) Bakır, Mahmut; Akan, Şahap; Özdemir, Emircan; Nguyen, Phi-Hung; Tsai, Jung-Fa; Pham, Hong-Anh
Delivering high-quality service to passengers can be critical for an airport’s survival, competitiveness, profitability, and long-term growth in a highly competitive environment. The present study aims to examine the relationship between airport service attributes and passenger satisfaction. To this end, we conducted multi-method research consisting of symmetric (multiple regression analysis—MRA) and asymmetric (necessary condition analysis—NCA) approaches. The research data consists of 1463 valid online reviews (n = 1463) of the top 50 busiest airports in Europe retrieved from Skytrax. The MRA was employed to examine the net effect of the eight airport service attributes on passenger satisfaction, while the NCA was used to explore the necessary conditions and level of necessity to achieve passenger satisfaction. Using MRA, the findings reveal that airport staff is the most influential predictor of passenger satisfaction, whereas airport shopping and airport Wi-Fi connectivity do not have a significant effect on passenger satisfaction. Moreover, the NCA results found that six of the eight conditions are necessary to achieve passenger satisfaction at the airport. To complement and comprehend the findings, this study also sheds light on the antecedents underlying airport passenger satisfaction in the post-COVID-19 era using NCA.
Havayolu taşımacılığında havayolu işletmesi seçimi ve memnuniyetin belirleyicileri: üniversite öğrencileri üzerine bir araştırma
(İzmir İktisat Dergisi / İzmir Journal Economics, 2023) Sarılgan, Ali Emre; Bakır, Mahmut
Bu çalışma üniversite öğrencilerinin seyahatlerinde havayolu işletmesi seçimini etkileyen faktörleri belirlemeyi ve bu faktörler arasındaki nedensel ilişkileri aydınlatmayı amaçlamaktadır. Bu doğrultuda, ilk olarak havayolu işletmesi seçimini etkileyen faktörlerin belirlenmesi amacıyla açımlayıcı faktör analizi yapılmıştır. İkinci aşamada ise elde edilen faktörler arasındaki yapısal etkileşimlerin modellenmesi ve anahtar faktörlerin belirlenmesi amacıyla yorumlayıcı yapısal modelleme analizi kullanılmıştır. Eskişehir’deki üniversite öğrencileri üzerinde yürütülen bu çalışmada, kolayda örnekleme tekniği kullanılarak 335 katılımcıya ulaşılmıştır. Uygulanan açımlayıcı faktör analizi neticesinde “Memnuniyete ilişkin faktör”, “Etkileşim kalitesi” ve “Fiyat” olarak adlandırılan üç faktör ortaya çıkmıştır. Havacılık yönetimi alanından üç uzmanın görüşlerine başvurulan ikinci aşamada ise elde edilen faktörler arasındaki hiyerarşik etkileşimin temelinde fiyat kriterinin yer aldığı ortaya konulmuştur. Bu çalışmanın belirli bir tüketici grubuna odaklanarak, üniversite öğrencilerinin havayolu işletmesi seçimini etkileyen faktörler arasındaki nedensel ilişkileri modellemesi bakımından literatüre katkı sunması beklenmektedir. This paper aims to determine the factors affecting university students’ airline choices and to shed light on the causal relationships between these factors. firstly, exploratory factor analysis was applied to identify the factors affecting airline selection. In the second stage, interpretative structural modeling analysis was used to model the structural interactions between the obtained factors and to identify the key factors. Focusing on the university students in Eskişehir, exploratory factor analysis extracted three factors called “Satisfaction-related factor,” “Interaction quality,” and “Price.” In the second stage, in which we sought expert opinion, it was found that price is the key factor affecting other factors. It is expected that this study will contribute to the literature in terms of modeling the causal relationships between the factors affecting the airline choice of university students by focusing on a specific consumer segment.
Havayolu işletmelerinde yolcu memnuniyetinin LOPCOW-AROMAN modeliyle analizi: star alliance stratejik ortaklığı uygulaması
(Dumlupınar Üniversitesi Sosyal Bilimler Dergisi, 2024) Bakır, Mahmut; İnce, Ferhat
Havacılık sektöründe müşteri memnuniyeti işletme başarısı üzerinde kritik bir role sahiptir. Pandemi sonrası tüketici beklentilerinin değişmesiyle birlikte, havayolu işletmelerinin performansının izlenmesi ve geliştirilmesi giderek daha önemli hale gelmiştir. Bu çalışma, Star Alliance stratejik ortaklığına odaklanarak yolcu memnuniyeti bakımından havayolu işletmelerinin performanslarını incelemeyi amaçlamaktadır. Bu doğrultuda, yolcu memnuniyetini ölçmek için Skytrax’ın çevrimiçi yolcu değerlendirmelerinden elde edilen ikincil veriler kullanılmıştır. Çalışmada, memnuniyet kriterlerinin önem düzeylerini belirlemek için LOPCOW yöntemi ve havayolu alternatiflerinin performanslarını sıralamak için AROMAN yöntemi olmak üzere Çok Kriterli Karar Verme yöntemleri (ÇKKV) kullanılmıştır. Bulgular, en önemli memnuniyet kriterlerinin sırasıyla yiyecek ve içecek, fiyat-fayda dengesi ve kabin ekibi hizmeti olduğunu ortaya koymuştur. Ayrıca, en yüksek yolcu memnuniyetine sahip havayolu işletmesinin Air New Zealand olduğu belirlenmiştir. Son olarak, elde edilen sıralamanın tutarlılığını test etmek amacıyla iki aşamalı duyarlılık analizi gerçekleştirilmiş ve sıralamanın büyük ölçüde tutarlı olduğu gözlemlenmiştir. Bu çalışma, havayolu işletmelerine pandemi sonrası dönemde performanslarını değerlendirmek için güçlü ve tutarlı bir model sağlamaktadır. In the aviation industry, customer satisfaction plays a critical role in business success. As consumer expectations change post-pandemic, monitoring and improving the performance of airlines is becoming increasingly important. As such, this study aims to examine the performance of airlines in terms of passenger satisfaction, focusing on the Star Alliance strategic network. To this end, secondary data obtained from online passenger reviews by Skytrax was used to measure passenger satisfaction. In the study, Multi Criteria Decision-Making methods (MCDM) were used, namely the LOPCOW method to determine the importance levels of satisfaction criteria and the AROMAN method to rank the performance of airline alternatives. The findings revealed that the most important satisfaction criteria are foods and beverages, value for money, and cabin staff service, respectively. In addition, Air New Zealand was identified as the airline with the highest passenger satisfaction. Finally, a rigorous two-stage sensitivity analysis was conducted to test the consistency of the ranking, and it was concluded that the ranking was largely consistent. This study provides airlines with a robust and consistent model for evaluating their performance in the post-pandemic period.
Havacılık yönetimi öğrencilerinin rezervasyon sistemine ilişkin algıları: metafor analizi örneği
(Uluslararası Anadolu Sosyal Bilimler Dergisi, 2023) Doğan, Murat Ahmet; Şimşek, Zafer; Ayvalıoğlu, Asena
Sivil hava taşımacılığı endüstrisi dünya ekonomisine katkıda bulunurken teknolojik yenilikleri takip ederek gelişimini sürdürmektedir. Teknoloji yoğunluğu yüksek bu endüstride sistem performanslarının artırılması önemli olup, ürün sunumunda kullanılan en önemli araç rezervasyon sistemleridir. Bu bağlamda, sözü edilen endüstride kariyer planlaması yapan havacılık yönetimi öğrencilerinin rezervasyon sistemleri hakkında bilgi ve farkındalık düzeyleri araştırılmaktadır. Bu çalışmanın amacı havacılık yönetimi öğrencilerinin rezervasyon sistemleri kavramına ilişkin algılarının metafor analizi yöntemiyle araştırılması ve oluşan metaforların ortak özellikleri bakımından kavramsal kategoriler altında toplanmasıdır. Çalışmanın örneklemi Samsun Üniversitesi Sivil Havacılık Yüksekokulu Havacılık Yönetimi bölümünde öğrenim görmekte olan 123 öğrenciden oluşmaktadır. 2021-2022 Bahar döneminde veri toplama süreci gerçekleştirilmiştir. Öğrencilere iki bölümden oluşan bir rezervasyon sistemleri metafor algısı formu uygulanmıştır. Bu formun ilk bölümü demografik bilgilerden oluşmaktadır. İkinci bölümü ise katılımcıların rezervasyon sistemleri algısını ölçmek için “Rezervasyon sistemleri … gibidir/benzerdir, çünkü …” ifadesini içeren açık uçlu tek sorudan oluşmaktadır. Bu formun birinci bölümünden elde edilen veriler tanımlayıcı istatistikler ile analiz edilirken ikinci bölümünden elde edilen metafor verileri de içerik analizi yöntemi ile analiz edilmiştir. Katılımcılardan elde edilen verilere göre 121 farklı metafor ortaya çıkmıştır. İlk değerlendirmeler sonrasında 111 farklı metafor anlamlı bulunmuş ve bu metaforlara ait açıklamalar içerik analizine dahil edilmiştir. Bu metaforlar altı kategori içerisinde yapılandırılmıştır. Bu kategoriler içerdikleri metafor yoğunluğuna göre sırasıyla şu şekildedir: (1) Yer tutma, (2) Sistem, (3) Fayda, (4) Hizmet, (5) Garanti ve (6) Kolaylıktır. Çalışmanın bulgularına göre öğrencilerin rezervasyon sistemleri algısının güvenli, kolaylık sağlayan ve hizmet odaklı kullanım üzerine odaklandığı görülmektedir. The civil transport sector supports the global economy while also advancing by new technologies. The most crucial system employed in product presentation in this technologically advanced business is the reservation system, so it's crucial to improve system performance. In this regard, how well-versed and aware of reservation systems are aviation management students who plan to work in this field is assessed. The purpose of this study is to use metaphor analysis to analyze how airline management students perceive the idea of reservation systems and to classify those perceptions into conceptual groups based on the metaphors' shared characteristics. The study sample consists of 123 students studying at Samsun University, School of Civil Aviation, Department of Aviation Management. The data collection process took place in the 2021-2022 Spring semester. A Reservation Systems Metaphor Perception Form consisting of two parts was applied to the students. The first part of this form consists of demographic data. The second part consists of an open-ended question that includes the phrase "Reservation systems are like/similar because ..." to see the participants' perception of the reservation systems. While the data obtained from the first part of this form were analyzed with descriptive statistics, the metaphor data obtained from the second part were analyzed with the content analysis method. According to the data obtained from the participants, 121 different metaphors emerged. After the initial evaluations, 111 different metaphors were found to be meaningful, and the explanations of these metaphors were included in the content analysis. These metaphors are structured into six categories. These categories are as follows, according to the metaphor density they contain: (1) Space, (2) System, (3) Benefit, (4) Service, (5) Warranty, and (6) Convenience. According to the findings of the study, it is seen that students' perception of reservation systems focuses on safe, convenient, and service-oriented use.
Exergoeconomic analysis of a photovoltaic array affected by dynamic shading
(Journal of Scientific Reports-A, 2023) Keskin, Vedat
Photovoltaic (PV) panels are affected by undesirable elements that exist around them, trees, structures, clouds, etc., as well as natural dirt, and dust accumulation on the PV surfaces. Unfortunately, partial shading falling on top of the PV panels may affect badly the output of photovoltaic arrays. In this study, an exergoeconomic analysis has been performed on the impact of dynamic partial shading created by a mislocated building on a photovoltaic array. Both experimental and theoretical results of this study have been compared on ambient temperature, solar radiation intensity, and shading ratio. The observations have been carried out on clear days starting in June 2018 to Mai 2019. According to the results, the shaded PV exergy efficiency (6.87%) and exergoeconomic parameter (Rex= 0.18508 W/$) are maxima in June and minimum in February (Ex =4.76%, Rex= 0.12228 W/$). As a result of this study, it can be said that the PV array exposed to long-term shading will seriously affect the service life of the PV array.
Energy‑ and exergy‑based economical and environmental (4E) evaluation of the influence of natural pollutants on PV array performance
(Journal of Thermal Analysis and Calorimetry, 2023) Keskin, Vedat
In the present investigation, thermodynamic/eco/environmental analysis of the relationship between time-dependent particle deposition and thermal-based losses and incident solar radiation intensity on the PV front cover glass during the months with the least precipitation in the city of Samsun (Turkey) was performed. To evaluate the effect of dust accumulation, con trolled experiments were carried out where the surface of one set of PV panels was periodically cleaned with water and the other one was left to natural contamination. The results showed that over three months, the difference in energy loss rates between cleaned and uncleaned PV arrays ranged from 2.53% to 8.1%, with the exergy efficiency difference measured at 1.3%–2.44%. According to the energy-based analyzes, August was the most effective month, with cleaned PV arrays reducing CO2 emissions by 401.5 kg and saving $6.02, compared to uncleaned PV arrays which reduced emissions by 362.21 kg and cost $5.43, respectively. Similarly, in the exergy-based evaluation, August was the most efficient month, with cleaned PV arrays decreasing CO2 emissions by 401.5 kg and saving $6.02, compared to uncleaned PV arrays, which dropped CO2 emissions by 362.21 kg and costing $5.43, respectively. While the cleaned surfaces were initially positive, a decrease was observed over time. However, the efficiency of PV decreased with increasing panel temperature. The study concludes that PV surfaces need to be cleaned at certain intervals, depending on the location’s weather conditions.

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