Do&#231;. Dr. Bora &#199;EKYAY

Probability in the Engineering and Informational Sciences , 2024 (SCI-Expanded)

2. On Computing the Multivariate Poisson Probability Distribution

ÇEKYAY B., Frenk J., Javadi S.

Methodology and Computing in Applied Probability , cilt.25, sa.3, 2023 (SCI-Expanded)

3. MTTF and availability of semi-Markov missions with non-identical generally distributed component lifetimes

Stochastic Models , cilt.39, sa.2, ss.414-447, 2023 (SCI-Expanded)

4. A simulation-based approach for improving the largest border crossing between Europe and Turkey

Ulengin F., ÇEKYAY B., Isik M., Ozaydin O., Kabak Ö., Toktaş-Palut P., et al.

Transport Policy , cilt.114, ss.350-363, 2021 (SSCI)

5. Reliability of mission-based k-out-of-n systems with exponential phase durations and component lifetimes

Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability , cilt.235, sa.3, ss.446-457, 2021 (SCI-Expanded)

6. A multi-commodity network flow and gravity model integration for analyzing impact of road transport quotas on international trade

ÇEKYAY B., Kabak Ö., Ülengin F., Ulengin B., Toktaş Palut P., Özaydın Ö.

Research in Transportation Economics , cilt.80, 2020 (SSCI) Sürdürülebilir Kalkınma

7. Reliability of semi-Markov missions

Stochastic Models , cilt.35, sa.1, ss.63-88, 2019 (SCI-Expanded)

8. Customizing exponential semi-Markov decision processes under the discounted cost criterion

European Journal of Operational Research , cilt.266, sa.1, ss.168-178, 2018 (SCI-Expanded)

9. Analysis of the impact of bilateral and transit quotas on Turkey's international trade by road transport: An integrated maximum flow and gravity model approach

ÇEKYAY B., Toktaş Palut P., Kabak Ö., Ülengin F., Özaydın Ö., Ülengin B.

Research in Transportation Economics , cilt.66, ss.70-77, 2017 (SSCI)

10. Critical Success Factors for the Iron and Steel Industry in Turkey: A Fuzzy DEMATEL Approach

Kabak Ö., Ülengin F., ÇEKYAY B., ÖNSEL EKİCİ Ş., Özaydın Ö.

International Journal of Fuzzy Systems , cilt.18, sa.3, ss.523-536, 2016 (SCI-Expanded) Sürdürülebilir Kalkınma

11. Effects of quotas on Turkish foreign trade: A gravity model

Ülengin F., ÇEKYAY B., Toktaş Palut P., Ülengin B., Kabak Ö., Özaydin Ö., et al.

Transport Policy , cilt.38, ss.1-7, 2015 (SSCI)

12. Reliability, MTTF and steady-state availability analysis of systems with exponential lifetimes

Applied Mathematical Modelling , cilt.39, sa.1, ss.284-296, 2015 (SCI-Expanded)

13. Optimal maintenance of semi-Markov missions

Probability in the Engineering and Informational Sciences , cilt.29, sa.1, ss.77-98, 2014 (SCI-Expanded)

14. Matching patient and physician preferences in designing a primary care facility network

Güneş E., Yaman H., ÇEKYAY B., Verter V.

Journal of the Operational Research Society , cilt.65, sa.4, ss.483-496, 2014 (SCI-Expanded)

15. The design of mission-based component test plans for series connection of subsystems

Kuban Altinel I., ÇEKYAY B., Feyziog̃elu O., Emre Keskin M., Özekici S.

IIE Transactions (Institute of Industrial Engineers) , cilt.45, sa.11, ss.1202-1220, 2013 (SCI-Expanded)

16. Performance measures for systems with Markovian missions and aging

IEEE Transactions on Reliability , cilt.61, sa.3, ss.769-778, 2012 (SCI-Expanded)

17. Optimal maintenance of systems with Markovian mission and deterioration

European Journal of Operational Research , cilt.219, sa.1, ss.123-133, 2012 (SCI-Expanded)

18. Design of optimum component test plans in the demonstration of diverse system performance measures

Yamangil E., Altnel I. K., ÇEKYAY B., FEYZİOĞLU O., Özekici S.

IIE Transactions (Institute of Industrial Engineers) , cilt.43, sa.7, ss.535-546, 2011 (SCI-Expanded)

19. Mission-Based Component Testing for Series Systems

Altinel K., ÇEKYAY B., FEYZİOĞLU O., Keskin E., Özekici S.

Annals of Operations Research , cilt.186, sa.1, ss.1-22, 2011 (SCI-Expanded)

20. Mean time to failure and availability of semi-Markov missions with maximal repair

European Journal of Operational Research , cilt.207, sa.3, ss.1442-1454, 2010 (SCI-Expanded)

Diğer Dergilerde Yayınlanan Makaleler 1

1. Sürekli Zaman Markov Karar Süreçlerinin Özgüleştirilmesi

Doğuş Üniversitesi Dergisi , cilt.19, sa.2, ss.65-74, 2018 (Hakemli Dergi)

Hakemli Bilimsel Toplantılarda Yayımlanmış Bildiriler 35

1. Optimal Replacement of Mission-Based Systems with Partially Observable Missions

2025 INFORMS International Meeting, Singapur, 20 - 23 Temmuz 2025, (Özet Bildiri)

2. Kısmi Gözlemlenebilir Bir Görev Yapan Görev-Tabanlı Sistemlerin Optimal Değişim Problemi: Pekiştirmeli Öğrenme Tabanlı Yaklaşık Bir Çözüm Önerisi

44. Ulusal Yöneylem Araştırması ve Endüstri Mühendisliği Kongresi, Ankara, Türkiye, 20 - 27 Haziran 2025, (Özet Bildiri)

3. Two-Stage Stochastic Modeling Approach for Maintenance Products Supply Chain in Rail Transportation Systems

ÇELEBİ H. H., ÇEKYAY B.

3rd International Thales Congress on Life, Engineering, Architecture and Mathematics, Kahire, Mısır, 24 - 25 Nisan 2025, (Tam Metin Bildiri)

4. Kısmi Gözlemlenebilir Bozulma Seviyelerine Sahip Görev-Tabanlı Sistemlerin Optimal Değişim Problemi: Simülasyon-Tabanlı, Yaklaşık Bir Çözüm Önerisi

43. Ulusal Yöneylem Araştırması ve Endüstri Mühendisliği Kongresi, Türkiye, 2 - 04 Ekim 2024, (Özet Bildiri)

5. Optimal Replacement of Mission-Based Systems with Partially Observable Degradation Levels

33rd European Conference on Operational Research, Kopenhag, Danimarka, 30 Haziran - 03 Temmuz 2024, (Özet Bildiri)

6. Urban Water Demand Forecasting with Machine Learning Methods: Sakarya Example

Ahi Evran 4th International Conference on Scientific Research, Kırşehir, Türkiye, 26 - 28 Nisan 2024, (Özet Bildiri)

7. Görev Tabanlı Sistemlerin Optimal Değişim Problemi: Ortalama Maliyet Kriteri

38. Yöneylem Araştırması ve Endüstri Mühendisliği Kongresi, Eskişehir, Türkiye, 26 - 29 Haziran 2018, (Özet Bildiri)

8. Logistics Process Improvement of Kapıkule Border Crossing

ÇEKYAY B., IŞIK M., Ülengin F., KABAK Ö., ÖNSEL EKİCİ Ş., ÖZAYDIN Ö., et al.

The 15th International Logistics and Supply Chain Congress, 19 - 20 Ekim 2017, (Tam Metin Bildiri)

9. A Decision Support Model to Improve Efficiency of Kapıkule Border Crossing

ÖZAYDIN Ö., IŞIK M., ÇEKYAY B., Ülengin F., KABAK Ö., ÖNSEL EKİCİ Ş., et al.

The 24th International Conference on Multiple Criteria Decision Making, Ottawa, Kanada, 10 - 14 Temmuz 2017, ss.60-62, (Özet Bildiri)

10. Üstten Sınırlı Olmayan Geçiş Hızlarına Sahip Yarı-Markov Karar Süreçlerinin Analizi: Müşterilerin Sabırsız Olduğu Bir Hizmet Hızı Kontrol Problemi

37. Ulusal Yöneylem Araştırması ve Endüstri Mühendisliği Kongresi, İstanbul, Türkiye, 5 - 07 Temmuz 2017, ss.113, (Özet Bildiri)

11. Discounted Semi-Markov Decision Processes with Possibly Accumulation Points: A Service Rate Control Problem with Impatient Customers

11. International Workshop on Retrial Queues and Related Topics, Amsterdam, Hollanda, 31 Ağustos - 02 Eylül 2016, (Özet Bildiri)

12. Discounted Semi-Markov Decision Processes with Pos- sibly Accumulation Points: A Service Rate Control Problem with Impatient Customers

28th European Conference on Operational Research, Poznan, Polonya, 3 - 06 Temmuz 2016, ss.107-108, (Özet Bildiri)

Kitaplar 1

1. Integrated Clustering Modeling with Back-propagation Neural Network for Efficient Customer Relationship Management

Ertay T., ÇEKYAY B.

Intelligent Data Mining Techniques and Applications, Ruan, D., Chen, G.-Q., Kerre, E.E., Wets, G., Editör, Springer, ss.355-373, 2005

Ansiklopedide Bölümler 2

1. Wiley Encyclopedia of Operations Research and Management Science

John Wiley Sons, ss., 2011

2. Encyclopedia of Statistics in Quality and Reliability