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Now showing 1 - 10 of 14
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Cold War Aviation: American Technology Transfer and the Construction of Turkey's First International Civilian Airport in Yeşilköy, Istanbul, 1944-1953
    (Cambridge Univ Press, 2024) Tunc, Tanfer Emin; Tunc, Gokhan
    With the economic and political support of the United States, in July 1947, Turkey signed contracts withthe Westinghouse Electric International Company and J.G. White Engineering Corporation to constructits first international civilian airport, Istanbul'sYe & scedil;ilk & ouml;y Airport. As this article will argue, the buildingof Ye & scedil;ilk & ouml;y (1949-53), through a partnership with two American engineering firms, is essentially anearly Cold War narrative of transnational exchange involving the multidirectional flow of technicalknowledge, expertise and resources between the United States and Turkey; the circulation of geopol-itically significant (and frequently competing) military, civilian and government actors; and thelocal and global implications of these transmissions. Yet the Ye & scedil;ilk & ouml;y construction narrative also illus-trates how post-war technology transfer was a highly political process of constant adaptation, modifi-cation and negotiation. Fraught with unforeseen friction and thorny challenges, Ye & scedil;ilk & ouml;y exemplifiesthe complicated American Cold War strategy of creating and maintaining alliances through engineeringknowledge, personnel and practices, often with unintended consequences. Moreover, as a case study,Ye & scedil;ilk & ouml;y opens a new window into the cautious science diplomacy that occurred along the IronCurtain, while filling a notable historiographic gap with respect to aviation in early Cold War Turkey.
  • Article
    Citation - WoS: 12
    Skeletonization-based beam finite element models for stochastic bicontinuous materials: Application to simulations of nanoporous gold
    (Cambridge Univ Press, 2018) Soyarslan, Celal; Argeso, Hakan; Borgmann, Swantje
    An efficient representative volume element generation strategy is developed in modeling nanoporous materials. It uses periodic 3D beam finite element (FE) models derived from skeletonization of spinodal-like stochastic microstructures produced by a leveled random field. To mimic stiffening with agglomeration of the mass at junctions, an increased Young's modulus is assigned to the elements within the junction zone. The effective Young's modulus, Poisson's ratio, and universal anisotropy index are computed. A good agreement of the Young's modulus predictions with those obtained from experimental results for phase volume fractions 0.20 < phi(B) < 0.50 is observed. Moreover, the elastic anisotropy index of the generated beam networks shows sufficient proximity to isotropy. Finally, it is demonstrated that, as compared to the simulation statistics of voxel-FE models, for the beam-FE models over 500-fold computational acceleration with 250-fold less memory requirement is provided.
  • Article
    A boundary value problem for second-order nonlinear difference equations on the integers
    (Cambridge Univ Press, 2005) Dal, F; Guseinov, GS
    In this study, we are concerned with a boundary value problem (BVP) for nonlinear difference equations on the set of all integers Z, under the assumption that the left-hand side is a second-order linear difference expression which belongs to the so-called Weyl-Hamburger limit-circle case. The BVP is considered in the Hilbert space l(2) and includes boundary conditions at infinity. Existence and uniqueness results for solution of the considered BVP are established.
  • Book Part
    Citation - WoS: 4
    Continued Fractions: Real Numbers
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Book Part
    Continued Fractions: Analysis
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Book Part
    Continued Fractions: Algebra
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Editorial
    Orthogonal Polynomials and Continued Fractions From Euler's Point of View Preface
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Book Part
    Continued Fractions: Euler's Influence
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Book Part
    Continued fractions: Euler
    (Cambridge Univ Press, 2008) Khrushchev, Sergey
    [No Abstract Available]
  • Article
    Citation - WoS: 6
    Citation - Scopus: 5
    Distortion in the Finite Determination Result for Embeddings of Locally Finite Metric Spaces Into Banach Spaces
    (Cambridge Univ Press, 2019) Ostrovska, S.; Ostrovskii, M. I.
    Given a Banach space X and a real number alpha >= 1, we write: (1) D(X) <= alpha if, for any locally finite metric space A, all finite subsets of which admit bilipschitz embeddings into X with distortions <= C, the space A itself admits a bilipschitz embedding into X with distortion <= alpha . C; (2) D(X) = alpha(+) if, for every epsilon > 0, the condition D(X) <= alpha + epsilon holds, while D(X) <= alpha does not; (3) D(X) <= alpha(+) if D(X) = alpha(+) or D(X) <= alpha. It is known that D(X) is bounded by a universal constant, but the available estimates for this constant are rather large. The following results have been proved in this work: (1) D((circle plus(infinity)(n= 1) X-n)(p)) <= 1(+) for every nested family of finite-dimensional Banach spaces {X-n}(n=1)(infinity) and every 1 <= p <= 8 infinity. (2) D((circle plus 8(n=1)(infinity)l(infinity)(n) )(p)) = 1(+) for 1 < p < infinity. (3) D(X) <= 4(+) for every Banach space X with no nontrivial cotype. Statement (3) is a strengthening of the Baudier-Lancien result (2008).