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Article On Pairs of ℓ-Köthe Spaces(Hacettepe University, 2010) Karapinar,E.Let ℓ be a Banach sequence space with a monotone norm {double pipe}· {double pipe} ℓ, in which the canonical system (ei) is a normalized unconditional basis. Let a = (ai), ai → ∞, λ = (λi) be sequences of positive numbers. We study the problem on isomorphic classification of pairs F = (Kℓ(exp(-1/p ai)),Kℓ(exp (-1/p ai + λi))). For this purpose, we consider the sequence of so-called m-rectangle characteristics μF m. It is shown that the system of all these characteristics is a complete quasidiagonal invariant on the class of pairs of finite-type ℓ-power series spaces. By using analytic scale and a modification of some invariants (modified compound invariants) it is proven that m-rectangular characteristics are invariant on the class of such pairs. Deriving the characteristic β̃ from the characteristic β, and using the interpolation method of analytic scale, we are able to generalize some results of Chalov, Dragilev, and Zahariuta (Pair of finite type power series spaces, Note di Mathematica 17, 121-142, 1997).Article Citation - Scopus: 5The Relationships Between Human Values, Absenteeism Attitudes and Reasons;(Hacettepe University, 2016) Demirutku,K.; Tekinay,S.The present study was conducted to investigate the relationships between human values, absenteeism attitudes, and absenteeism reasons. A correlation study was carried out with 180 students who were enrolled in different programs in a private university located in Ankara. Value orientations of the participants was measured by using Portrait Values Questionnaire (Schwartz et al., 2012) and absenteeism attitudes were measured by using semantic differential scales. In addition, students reported the frequencies of not going to the campus in class-days, and not attending the classes despite being in the campus with various reasons on the scales developed by referring to the relevant literature to be used in the present study. Correlation analyses revealed that the importance of hedonism and stimulation values was positively, whereas the importance of self-direction and conformity values was negatively correlated with absenteeism attitudes and reasons. It was proposed that absenteeism attitudes and reasons might have the function of expressing different values. The results were discussed by taking into account the measurement- and sample-related limitations of the study, and corresponding suggestions for future research were presented. © 2016, Hacettepe University. All rights reserved.Article Citation - Scopus: 1On the Derivation of Explicit Formulae for Solutions of the Wave Equation in Hyperbolic Space(Hacettepe University, 2013) Guseinov,G.S.We offer a new approach to solving the initial value problem for the wave equation in hyperbolic space in arbitrary dimensions. Our approach is based on the spectral analysis of the Laplace-Beltrami operator in hyperbolic space and some structural formulae for rapidly decreasing functions of this operator. © 2013, Hacettepe University. All rights reserved.Article Citation - Scopus: 1Reconstruction of Complex Jacobi Matrices From Spectral Data(Hacettepe University, 2009) Guseinov,G.S.In this paper, we introduce spectral data for finite order complex Jacobi matrices and investigate the inverse problem of determining the matrixfrom its spectral data. Necessary and sufficient conditions for the solvability of the inverse problem are established. An explicit procedure of reconstruction of the matrix from the spectral data is given.
