Now showing items 152-171 of 210

    • q-Harmonic mappings for which analytic part is q-convex functions of complex order 

      Çetinkaya, Asena; Polatoğlu, Yaşar (Hacettepe Univ, Fac Sci, Hacettepe Univ, Fac Sci, Beytepe, Ankara 06800, Turkey, 2018)
      We introduce a new class of harmonic function f, that is subclass of planar harmonic mapping associated with q-difference operator. Let h and g are analytic functions in the open unit disc D = {z : vertical bar z vertical ...
    • Q-Starlike Functions of Order Alpha 

      Polatoğlu, Yaşar; Uçar, Faruk; Yılmaz, Bülent (TURKIC WORLD MATHEMATICAL SOC, 2018)
      For all q is an element of (0, 1) and 0 <= alpha < 1 we define a class of analytic functions, so-called q-starlike functions of order alpha on the open unit disc D = {z : vertical bar z vertical bar < 1}. We will study ...
    • QUASI-PERIODIC OSCILLATIONS AS GLOBAL HYDRODYNAMIC MODES IN THE BOUNDARY LAYERS OF VISCOUS ACCRETION DISKS 

      Erkut, M. Hakan; Psaltis, Dimitrios; Alpar, M. Ali (IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND, 2008-11-10)
      The observational characteristics of quasi-periodic oscillations (QPOs) from accreting neutron stars strongly indicate the oscillatory modes in the innermost regions of accretion disks as a likely source of the QPOs. The ...
    • Quasiconformal Harmonic Mappings Related to Janowski Alpha-Spirallike Functions 

      Polatoğlu, Yaşar; Aydoğan, Melike (Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1, Melville, Ny 11747-4501 Usa, 2014)
      Let f = h(z) + g(z) be a univalent sense-preserving harmonic mapping of the open unit disc D = {z/vertical bar z vertical bar < 1}. If f satisfies the condition vertical bar omega(z)vertical bar = vertical bar g'(z)/h'(z)vertical ...
    • Quasiconformal Harmonic Mappings Related to Janowski Starlike Functions 

      Kahramaner, Yasemin; Polatoğlu, Yaşar (Univ Kebangsaan Malaysia, Faculty Science & Technology, Bangi, Selangor, 43600, Malaysia, 2014-12)
      Let f(z) = h(z) + <(g(z))over bar> be a univalent sense-preserving harmonic mapping of the open unit disc D = {z vertical bar vertical bar z vertical bar < 1}. If f satisfies the condition vertical bar omega(z)vertical ...
    • Quasiconformal Harmonic Mappings Related To Starlike Functions 

      Polatoğlu, Yaşar; Yavuz Duman, Emel; Kahramaner, Yasemin; Aydoğan, Melike (Eudoxus Press, Llc, 1424 Beaver Trail Drive, Cordova, Tn 38016 Usa, 2014-07)
      Let f = h(z) + <(g(z))over bar> be a univalent sense-preserving harmonic mapping of the unit disc D = {z is an element of C parallel to z vertical bar < 1}. If f satisfies the condition vertical bar w(z)vertical bar = ...
    • Reciprocal Classes Of P-Valently Spirallike And P-Valently Robertson Functions 

      Polatoğlu, Yaşar; Uyanık, Neslihan; Owa, Shigeyoshi; Shiraishi, Hitoshi (Springer International Publishing Ag, Gewerbestrasse 11, Cham, Ch-6330, Switzerland, 2011)
      For p-valently spirallike and p-valently Robertson functions in the open unit disk U, reciprocal classes S-p(alpha, beta), and C-p(alpha, beta) are introduced. The object of the present paper is to discuss some interesting ...
    • Resmin Matematikçisi 

      Güzel, Erhan (2016-04-01)
    • Ruscheweyh-type starlike functions of complex order associated with q-difference operator 

      Çetinkaya, Asena (SPRINGER INTERNATIONAL PUBLISHING AG, GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND, 2019-11)
      In this paper, we introduce three new subclasses of starlike functions of complex order by using Ruscheweyh-type q-differential operator. We investigate inclusion theorem, sufficient coefficient estimates, distortion bounds ...
    • Schwarzian Derivative Revisited 

      Polatoğlu, Yaşar; Çağlar, Mert; Demirer, R. Murat (İstanbul Kültür Üniversitesi Yayınları, 2006-12)
      The Boolean-algebraic structure of the so-called Schwarzian derivative is investigated. A sufficient condition for a function of several variables to behave chaotically, which concerns its associated Schwarzian derivative, ...
    • Self-organized maps based neural networks for detection of possible earthquake precursory electric field patterns 

      Özerdem, M. S.; Üstündağ, B.; Demirer, R. Murat (ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2006-04)
      Some physical parameters of the nature are known to have precursory correlation to the preceding earthquakes. Unfortunately, due to several uncertainties and structural variations of the geophysical faults a definite ...
    • Sihir ve Matematik 

      Güzel, Erhan (2014-02-07)
    • Smart home hecurity with the use of WSNs on future intelligent cities 

      Dine, G.; Şahingöz, Özgür Koray (2019-04)
      In recent years, smart cities use some advanced technologies such as Cyber-Physical Systems and Internet of Things for improving the quality of human life by enabling extra security and communication abilities. In a recent ...
    • Solution of fifth order boundary value problems by using local polynomial regression 

      Çağlar, Hikmet; Çağlar, Nazan (ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA, 2007-03-15)
      In this paper, we present a novel method based on the local polynomial regression for solving of fifth order boundary value problems. The method is tested on numerical example to demonstrate its usefulness. The method ...
    • Some distortion theorems for starlike harmonic functions 

      Yavuz Duman, Emel (2010)
      In this paper , we consider harmonic univalent mappings of the form f = h + ¯g defined on the unit disk D which are starlike. Distortion and growth theorems are obtained.
    • Some distortion theorems for starlike log-harmonic functions 

      Yavuz Duman, Emel (International Short Joint Research Workshop, Applications of Convolutions in Geometric Function Theory, 2011, Research Institute for Mathematical Sciences, Kyoto University (RIMS), Kyoto, Japan, RIMS Kokyuroku, 2011-12)
    • Some Inequalities Which Hold For Starlike Log-Harmonic Mappings Of Order Alpha 

      Özkan, Hatice Esra; Aydoğan, Melike (Eudoxus Press, Llc, 1424 Beaver Trail Drive, Cordova, Tn 38016 Usa, 2014-04)
      Let H(D) be the linear space of all analytic functions defined on the open disc D = {z vertical bar vertical bar z vertical bar < 1}. A log-harmonic mappings is a solution of the nonlinear elliptic partial differential ...
    • Some Properties Of Analytic Functions Relating To The Miller And Mocanu Result 

      Yavuz Duman, Emel; Nunokawa, Mamoru; Owa, Shigeyoshi; Aydoğan, Melike (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2011-03)
      Let P(alpha) be the class of analytic functions p(z) in the open unit disc U with p(0) = 1 and |arg p(z)| < pi/2 alpha (z is an element of U) for some real alpha > 0. The object of the present paper is to discuss some ...
    • Some properties of certain analytic functions 

      Owa, Shigeyoshi; Yavuz Duman, Emel (2012)
      Applying the subordinations for analytic functions f(z) normalized by f(0) = 0 and f 0 (0) = 1 in the open unit disk U, some properties of f(z) are discussed.