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Toplam kayıt 257, listelenen: 41-60
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The comparison of mechanical behavior of MgO-MgAl2O4 with MgO-ZrO2 and MgO-MgAl2O4-ZrSiO4 composite refractories
(Elsevier Sci LTD, 2012)Mechanical properties of different compositions obtained from the additions of 5, 10, 20 and 30 wt.% zircon (ZrSiO4) into the MgO-spinel composite refractories and ZrO2 into MgO have been examined, the variations that ... -
Comparison of rotordynamic coefficients for labyrinth seals using a two-control volume method
(SAGE Publications LTD, 2008)In the current paper, the gas flow in straight through labyrinth seals is investigated using a two-control volume model. The continuity and the circumferential momentum equations are reobtained using the above model and ... -
Comparisons of rotordynamic coefficients in stepped labyrinth seals by using Colebrook-White friction factor model
(Springer, 2007)The objective of this work is to observe the effects of friction factors for the stepped labyrinth seals. The gas flow through the seals creates net pressure and shear forces acting on the rotor. It is necessary to predict ... -
Composite wave models for elastic plates
(Royal Soc, 2018)The long-term challenge of formulating an asymptotically motivated wave theory for elastic plates is addressed. Composite two-dimensional models merging the leading or higher-order parabolic equations for plate bending and ... -
Conceptual and procedural performance of undergraduate students in integration
(2009)We investigate the conceptual and procedural knowledge in integration of a group of students who has successfully completed a one-year calculus course. The participants are asked five questions and their responses are ... -
Constancy of maps into f-manifolds and pseudo f-manifolds
(2007)Constancy of some maps into certain f-manifolds and pseudo f-manifolds is discussed. As a result a Constancy Theorem is given, for maps of Riemannian manifolds into these manifolds, which recovers all the results obtained so far -
Constancy of some maps into f-manifolds
(Belgian Mathematical Soc Triomphe, 2006)Constancy of some maps into certain f-manifolds is discussed. -
The Construction of Differential Inclusions With Prescribed Attainable Sets
(Springer/Plenum Publishers, 2008)For given epsilon > 0 and a given continuous set-valued mapping t -> Z(t), t epsilon [t(0),theta], where Z(t). subset of R-n is a compact and convex set for every t epsilon [t(0),theta], a differential inclusion is constructed ... -
The construction of maximum independent set of matrices via Clifford algebras
(Scientific Technical Research Council Turkey-Tubitak, 2007)In [1], [2] and [6] the maximum number of some special type n x n matrices with elements in F whose nontrivial linear combinations with real coefficients are nonsingular is studied where F is the real field R, the complex ... -
Continuity of selectorial maps
(2011)In this paper the selectorial map notion is introduced and the continuity property of selectorial map is studied. The necessary and sufficient conditions for continuity of selectorial maps are obtained -
Convex extensions of the convex set valued maps
(Academic Press Inc Elsevier Science, 2006)In this article the existence of the convex extension of convex set valued map is considered. Conditions are obtained, based on the notion of the derivative of set valued maps, which guarantee the existence of convex ... -
Çizge-Yönlendirilmiş Fraktalların Çapları Üzerine
(2017)Bu çalışmada çizge-yönlendirilmiş yinelemeli fonksiyon sistemleri ele alınmış, verilen keyfi noktaları merkez kabul eden ve bu sistemlerin çekicilerini kapsayan disklerin bulunabilmesi için bir yeterli koşul verilmiştir. ... -
Degenerate spin structures and the Levy-Leblond equation
(2006)Newton-Cartan manifolds and the Galilei group are defined by the use of co-rank one degenerate metric tensor. Newton-Cartan connection is lifted to the degenerate spinor bundle over a Newton-Cartan 4-manifold by the aid ... -
Degenerate spin structures and the Lévy-Leblond equation
(2006)Newton-Cartan manifolds and the Galilei group are defined by the use of co-rank one degenerate metric tensor. Newton-Cartan connection is lifted to the degenerate spinor bundle over a Newton-Cartan 4-manifold by the aid ... -
Dependence on the parameters of the set of trajectories of the control system described by a nonlinear Volterra integral equation
(Acad Sciences Czech Republic, Inst Mathematics, 2014)In this paper the control system with limited control resources is studied, where the behavior of the system is described by a nonlinear Volterra integral equation. The admissible control functions are chosen from the ... -
Derivatives of the restrictions of harmonic functions on the Sierpinski gasket to segments
(Academic Press Inc Elsevier Science, 2007)We give an explicit derivative computation for the restriction of a harmonic function on SG to segments at specific points of the segments: The derivative is zero at points dividing the segment in ratio 1:3. This shows ... -
Development of a three dimensional geometric thinking test for early graders
(Sriwijaya University, 2018)This study aimed to develop a three-dimensional geometric thinking test to determine the geometric thinking of early graders in the paper-pencil environment. First, we determined the components of three-dimensional geometric ... -
Dirac Operator on a 7-Manifold with Deformed G(2) Structure
(Ovidius University Press, 2012)In this work, we consider the deforming of a G(2) structure by a vector field on a 7-manifold. To obtain the metric corresponding to deformed G(2) structure, a new map is defined. By using this new map, the co-variant ... -
Directional convex extensions of the convex valued maps
(2009)In this paper, the concept of directional convex extension of the convex valued maps is introduced. Necessary and sufficient conditions for the existence of the directional convex extension of the convex valued map are obtained -
Effects of shear stress forces to rotordynamic coefficients in staggered labyrinth seals
(Professional Engineering Publishing LTD, 2006)In this article, shear stresses in calculating the rotordynamic coefficients of staggered labyrinth seals are presented. Differences in the values of these coefficients are observed and quantified. The results of the present ...