Toplam kayıt 68, listelenen: 53-68

    • The regularity properties and blow-up of solutions for nonlocal wave equations and applications 

      Shakhmurov, Veli; Shahmurov, Rishad (Results in Mathematics, 2022)
      In this paper, the Cauchy problem for linear and nonlinear wave equations is studied.The equation involves an abstract operator A in a Hilbert space H and a convolution term. Here, assuming sufficient smoothness on the ...
    • The regularity properties and blow-up of the solutions for nonlocal general wave equations 

      Shakhmurov, Veli; Bayrak, Vural; Shahmurov, Rishad (Journal of Differential Equations, 2022)
      In this paper, the Cauchy problem for nonlocal linear and nonlinear wave equations are studied. The equations include the general differential operators. The existence, uniqueness, -regularity properties and blow-up at ...
    • Regularity properties of nonlocal fractional differential equations and applications 

      Shakhmurov, Veli (Georgian Mathematical Journal, 2022)
      The regularity properties of nonlocal fractional elliptic and parabolic equations in vector-valued Besov spaces are studied. The uniform Bsp,q -separability properties and sharp resolvent estimates are obtained for abstract ...
    • Rotations on a lightcone in minkowski 3-Space 

      Şimşek, Hakan; Özdemir, Mustafa (Advances in Applied Clifford Algebras, Springer, 2017)
      In this paper the generalization of the rotations on any lightcone in Minkowski 3-space ℝ1,2𝑔 is given. The rotation motion on the lightcone is examined by means of a bilinear form and Lorentzian notions. We use the ...
    • Selection industry 4.0 maturity model using fuzzy and intuitionistic fuzzy topsis methods for a solar cell manufacturing company 

      Altan Koyuncu, Cansu; Aydemir, Erdal; Başarır, Ali Cem (Soft Computing, 2021)
      Maturity models help organizations identify the processes of transformation and needs by analyzing the current situation of production systems. Within the scope of Industry 4.0, in this study, several maturity models are ...
    • Shape curvatures of the Lorentzian plane curves 

      Şimşek, Hakan; Özdemir, Mustafa (Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics, 2017)
      In this paper, we examine the Lorentzian similar plane curvesusing the hyperbolic structure and spherical arc length parameter. We classifyall self-similar Lorentzian plane curves and give formulas for pseudo shapecurvatures ...
    • Shift scheduling optimization: a real-life underground transportation example 

      Öztürk, Hafsa Nur; Atmaca, H. Ediz; Erdoğan Akbulut, Hatice; Aktaş, Esra (2nd International Conference on Applied Engineering and Natural Sciences, 2022)
      Personnel scheduling is basically a type of scheduling that determines which employee will work and when, taking into account the needs of the industry and employees. Personnel scheduling is intertwined with shift scheduling ...
    • Shift scheduling optimization: a real-life underground transportation example 

      Öztürk, Hafsa Nur; Atmaca, H. Ediz; Erdoğan Akbulut, Hatice; Aktaş, Esra (European Journal of Science and Technology, 2022)
      Personnel scheduling is basically a type of scheduling that determines which employee will work and when, taking into account the needs of the industry and employees. Personnel scheduling is intertwined with shift scheduling ...
    • Similar and self-similar curves in minkowski n-space 

      Şimşek, Hakan; Özdemir, Mustafa (Bulletin of Korean Mathematical Society, 2015)
      In this paper, we investigate the similarity transformations in the Minkowski n-space. We study the geometric invariants of nonnull curves under the similarity transformations. Besides, we extend the fundamental theorem ...
    • Similar and self-similar null Cartan curves in Minkowski-Lorentzian spaces 

      Şimşek, Hakan (Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics, 2022)
      In this paper, differential invariants of null Cartan curves are studied in (n+2) dimensional Lorentzian similarity geometry. The fundamental theorem for a null Cartan curve in similarity geometry is investigated and the ...
    • 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 ...
    • Some results on p-shape curvatures of non-lightlike space curves 

      Şimşek, Hakan; Özdemir, Mustafa (International Electronic Journal of Geometry, 2018)
      In this paper, we obtain some findings for a non-null curve parameterized by spherical arc length. We investigate the relationship between a non-null curve with p-shape curvatures and pseudospherical curves on S21 and ...
    • 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 ...
    • Statistical approaches for the analysis of dependency among neurons under noise 

      Gençağa, Deniz; Şengül Ayan, Sevgi; Farnoudkia, Hajar; Okuyucu, Serdar (MDPI, 2020)
      Neuronal noise is a major factor affecting the communication between coupled neurons. In this work, we propose a statistical toolset to infer the coupling between two neurons under noise. We estimate these statistical ...
    • Tarımda su tasarrufu sağlayan sulama aparatının geliştirilmesi 

      Ülgen, Semail; Aydınşakir, Köksal; Kayhan, Merve; Aktaş, Ümmiye; Doğan, Berfin; Ödemiş, Eşe Nur (41. Yöneylem Araştırması ve Endüstri Mühendisliği Ulusal Kongresi, 2022)
      Küresel ısınma su kaynaklarının önemini artırmaktadır. İklim değişikliği nedeniyle su kaynaklarındaki azalmanın, tarımsal üretim üzerinde olumsuz bir etkisi bulunmaktadır. Ülkemizde kullanılan toplam suyun yaklaşık %74'ü ...
    • Use of phase-contrast MRI to measure aortic stiffness in young-onset hypertension: a pilot study 

      Özer Gökaslan, Çiğdem; Gökaslan, Serkan; Demirel, Emin; Şengül Ayan, Sevgi (Cardiology in the Young, 2022)
      Young-onset hypertension is defined as hypertension diagnosed before the age of40 years. Aortic pulse wave velocity is an indication of aortic stiffness. MRI assessment has beenwell verified compared to invasive pressure ...