Başlık için Endüstri Mühendisliği Bölümü / Department of Industrial Engineering listeleme

Toplam kayıt 70, listelenen: 43-62

    • On Einstein Finsler metrics 

      Ülgen, Semail; Sevim, Esra Sengelen; Hacinliyan, İrma (World Scientific Publishing Company, 2021)
      In this paper, we study Finsler metrics expressed in terms of a Riemannian metric, a 1-form, and its norm and find equations with sufficient conditions for such Finsler metrics to become Ricci-flat. Using certain ...

    • On focal curves of null Cartan curves 

      Şimşek, Hakan (Turkish Journal of Mathematics, 2017)
      The focal curve, which is determined as the locus of centers of osculating pseudo-spheres of a null Cartan curve, is investigated in Minkowski (n+2)-space Mn+2. Moreover, a curve called acceleration focal curve of a null ...

    • On Ricci-quadratic Finsler metrics 

      Sengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (4th International Conference on Applied Engineering and Natural Sciences, 2022)
      In this paper, the Ricci curvature is defined for sprays on a manifold and every spray with a volume form on a manifold can be deformed to a projective spray. The quadratic Ricci curvature of a projective spray is called ...

    • On some Ricci curvature tensors in Finsler geometry 

      Sengelen Sevim, Esra; Shen, Zhongmin; Ülgen, Semail (4th International Conference on Applied Engineering and Natural Sciences, 2022)
      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 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 ...

    • On the eigenvalues and eigenvectors of a lorentzian rotation matrix by using split quaternions 

      Özdemir, Mustafa; Erdoğdu, Melek; Şimşek, Hakan (Advances in Applied Clifford Algebras, 2014)
      In this paper, we examine eigenvalue problem of a rotation matrix in Minkowski 3 space by using split quaternions. We express the eigenvalues and the eigenvectors of a rotation matrix in term of the coefficients of the ...

    • Optimizing bus lines using genetic algorithm for public transportation 

      Batuhan, Bulut; Günay, Melih; Özgün, Kamer; Ledet, Joseph (The 6th International Conference on Smart City Applications, 2021)
      Due to increasing human population, the need for quality public transportation has also increased. This study takes stop density, stop layout, and passenger population of those stops into consideration to offer a better ...

    • Optimizing the liver/kidney organ donation waiting list in Antalya using maxsat and graph model 

      Ülgen, Semail; Yangın, Elifnaz (International Conference on Industrial Engineering and Operations Management, 2022)
      Organ transplantation has become an increasing need in the world and in our country. Organ transplantation is completed by taking healthy and matched organs from living or cadaver donors and transplanting them to the ...

    • A pilot study of ion current estimation by ANN from action potential waveforms 

      Şengül Ayan, Sevgi; Süleymanoğlu, Selim; Özdoğan, Hasan (Journal of Biological Physics, 2022)
      Experiments using conventional experimental approaches to capture the dynamics of ion channels are not always feasible, and even when possible and feasible, some can be timeconsuming. In this work, the ionic current–time ...

    • The quality properties of integral type problems for wave equations and applications 

      Shakhmurov, Veli; Shahmurov, Rishad (Journal of Applied Mathematics and Physics, 2022)
      In this paper, the integral problem for linear and nonlinear wave equations is studied. The equation involves abstract operator A in Hilbert space H. Here, assuming enough smoothness on the initial data and the operators, ...

    • Quality properties of linear and nonlinear abstract Schrödinger equations and applications 

      Shakhmurov, Veli (4. International Palandöken Scientific Studies Congress, 2022)
      In this talk, we consider the integral problem for linear abstract Schrödinger equation and nonlinear abstract Schrˆdinger (NLAS) equation.

    • Quantitative roles of ion channel dynamics on ventricular action potential 

      Şengül Ayan, Sevgi; Sırcan, Ahmet Kürşad (Channels, 2021)
      Mathematical models for the action potential (AP) generation of the electrically excitable cells including the heart are involved different mechanisms including the voltage-dependent currents with nonlinear time- and ...

    • 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 (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 ...

    • 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 ...