Recent Submissions

  • Spectral properties of differential operators with discontinuous coefficients and applications 

    Shakhmurov, Veli (Publicationes Mathematicae Debrecen, 2023)
    In this paper, the spectral properties of linear operators in Banach spaces are studied. We find sufficient conditions on the structure of Banach spaces and resolvent properties that guarantee the completeness of the root ...
  • Warped f-product finsler metrics 

    Ülgen, Semail (Bilecik Seyh Edebali University Journal of Science, 2023-11-30)
    This paper shows the existence of some Ricci-flat warped f-Product Finsler metrics. We investigate the general structure of this newly defined warped f-Product Finsler metrics, indeed we identify the metric form, spray ...
  • Araç rotalama projesi 

    Ülgen, Semail; Erdoğan Akbulut, Hatice (2022-04-01)
    Haftanın altı günü çalışan bir firmanın siparişleri günlük olarak dağıtıma çıkmaktadır. Siparişler öncelikli olarak hangi güzergaha ait olduğu belirlenmektedir. Ardından başlangıç noktasına göre (depo, fabrika vs.) uzaklık ...
  • On some ricci curvature tensors in finsler geometry 

    Şengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (2023-06-01)
    In this paper, we discuss several Ricci curvature tensors and their relationship with the Ricci curvature and some non-Riemannian quantities. By these Ricci curvature tensors, we shall have a better understanding on the ...
  • SU TASARRUFU SAĞLAYAN SULAMA APARATI 2023/000465 numaralı/P.BŞV.2023/008 referanslı 

    ÜLGEN, SEMAİL (TC TÜRK PATENT VE MARKA KURUMU  Patent Dairesi Başkanlığı, 2023-10-02)
    Buluş ağaç sulama alanında su verimliliğini artırmak amacıyla, düzgün yamukların birbirine geçirilmesiyle oluşturulmuş bir etek kısmı ve su buharlaşmasının tamamıyla engellenmesi amacıyla, buluşun gövde yarıçapı farklı ...
  • On Some Ricci Curvature Tensors in Finsler geometry 

    Sengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (13-15 Eylül 2023 Feza Gürsey Enstitüsü’nde “Genel Görelilikte Karakteristik Sınıflar” Yaz Okulu (https://fezagursey.bogazici.edu.tr/en/genel-gorelilikte-karakteristik-siniflar-13-15092023), 2023)
    In this paper, we discuss several Ricci curvature tensors and their relationship with the Ricci curvature and some non-Riemannian quantities. By these Ricci curvature tensors, we shall have a better understanding on the ...
  • On ricci-quadratic finsler metrics 

    Sengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (The Journal of Geometric Analysis, 2023-06-12)
    Finsler metrics being Ricci-quadratic is a non-Riemannian condition since the Ricci curvature (tensor) is always Ricci-quadratic for Riemannian metrics. In this paper, we introduce the notion of strongly Ricci-quadratic ...
  • On a class of Ricci quadratic Finsler metrics 

    Gabrani, Mehran; Şengelen Sevim, Esra; Ülgen, Semail (2024)
    In this paper, we study a class of Finsler warped product metrics with quadratic Ricci curvature. This class is characterized by a partial differential equation. In particular, we obtain a special class of Finsler warped ...
  • On strongly Ricci-quadratic finsler metrics 

    Şengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (Springer, 2023)
    Finsler metrics being Ricci-quadratic is a non-Riemannian condition since the Ricci curvature (tensor) is always Ricci-quadratic for Riemannian metrics. In this paper, we introduce the notion of strongly Ricci-quadratic ...
  • Estimation of alighting counts for public transportation vehicle occupancy levels using reverse direction boarding 

    Özgün, Kamer; Günay, Melih; Başaran, Doruk; Ledet, Joseph (Elsevier, 2023)
    In order to improve the performance of a public transport system, it is important to know alighting counts as well as boarding counts at bus stops. While boarding is almost always available through a fare collection system, ...
  • Dynamics of a cancer tumor growth model with a drug term 

    Sahmurova, Aida; Shakhmurov, Veli (10th International Congress on Fundamental and Applied Sciences, 2023)
    Here, we investigate Michaelis-Menten type dynamics of phase-space analysis to a mathematical model of tumor growth with an immune responses. We thenexplore the effects of adaptive cellular immunotherapy on the model ...
  • The nonlinear dynamics a cancer tumor growth model and application 

    Sahmurova, Aida; Shakhmurov, Veli (11th International Summit Scientific Research Congress, 2023)
    In this talk, mathematical analysis of the model equations with multipoint condition, regarding dissipativity, boundedness of solutions, invariance of non-negativity, nature of equilibria, local and global stability have ...
  • A novel nonlinear dynamic model describing the spread of virus 

    Shakhmurov, Veli; Kurulay, Muhammet; Sahmurova, Aida; Gürsesli, Mustafa Can; Lanata, Antonio (MDPI, 2023)
    This study proposes a nonlinear mathematical model of virus transmission. The interaction between viruses and immune cells is investigated using phase-space analysis. Specifically, the work focuses on the dynamics and ...
  • Interaction of virus in cancer patients: a theoretical dynamic model 

    Shakhmurov, Veli; Kurulay, Muhammet; Sahmurova, Aida; Gürsesli, Mustafa Can; Lanata, Antonio (MDPI, 2023)
    This study reports on a phase-space analysis of a mathematical model of tumor growth with the interaction between virus and immune response. In this study, a mathematical determination was attempted to demonstrate the ...
  • Stability features of the dynamical system emerging in the model of the cancer growth 

    Shakhmurov, Veli; Maharramov, Akif; Sahmurova, Aida (2023)
    In this paper, we studied phase-space analysis of a certain mathematical model of tumor growth with an immune responses and chemotherapy therapy. Mathematical modeling of this process is viewed as a potentially powerful ...
  • Healthy bread quality index based on food label information 

    Şimşek, Hakan; Sarı, Şevval (Elsevier, 2023)
    The label on the package shows important information such as the origin, type, price, and nutritional and energy value of the product during the purchase of the product. A decision support system is aimed at obtaining ...
  • Soft computing based e-commerce website service quality index measurement 

    Şimşek, Hakan; Güvendiren, İrem (Elsevier, 2023)
    It is observed that there is a need for a quality measurement template system that is easy to understand, effective, easily updated according to different requests, contains enough variables, and gives fast results, which ...
  • A fuzzy logic approach and path algorithm for time and energy management of smart cleaning robots 

    Şimşek, Hakan; Ertürk, Faize Nur; Şeker, Recep (2023)
    Smart home technologies (SHM) or devices provide some degree of digitally connected, automated, or enhanced services to building occupants in residential areas and have been becoming increasingly popular in recent years. ...
  • Neurocognitive responses to spatial design behaviors and tools among interior architecture students: a pilot study 

    Şekerci, Yaren; Kahraman, Mehmet Uğur; Özturan, Özgü; Çelik, Ertuğrul; Şengül Ayan, Sevgi (2024)
    The impact of emotions on human behavior is substantial, and the ability to recognize people’s feelings has a wide range of practical applications including education. Here, the methods and tools of education are being ...
  • Model nöronların elektrokimyasal enerji tüketiminin diferansiyel denklem sistemleri kullanılarak incelenmesi 

    Şengül Ayan, Sevgi (2. Uluslararası Bilimsel Araştırmalar ve Yenilikçi Çalışmalar Sempozyumu, 2022)
    Nöronlar tarafından aksiyon potansiyeli üretimi, enerji gerektiren yoğun bir süreçtir ve nöronların sinyal iletim aktivitesini korumak için ne kadar metabolik enerjinin gerekli olduğunu belirlemek, oldukça pratik öneme ...

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