Search Results

Now showing 1 - 8 of 8
  • Article
    Citation - WoS: 6
    A Light Bulb in Every House the Istanbul General Electric Factory and American Technology Transfer To Turkey
    (Johns Hopkins Univ Press, 2022) Tunc, Tanfer Emin; Tunc, Gokhan
    In 1946, Turkish entrepreneur Vehbi Koc signed an agreement with the U.S. firm General Electric to build and operate its first light bulb factory in the Near/Middle East, in Istanbul. This private joint venture introduced new manufacturing techniques, business practices, and consumer habits to Turkey, opening channels of postwar technological exchange. Closer examination of the GE-Koc partnership reveals that during the early Cold War, the transfer and embedding of American technologies in Turkey was a politically complicated process of innovation that required constant adaptation. Fraught with unforeseeable obstacles, it also required cautious negotiation with multiple transnational actors. The story of the GE-Koc partnership thus adds a new dimension to historical understandings of the Turkish Cold War experience and the Americanization of the region. It illustrates how transferring a nonmilitary, soft-power, domestic technologythe light bulb-played a significant role in Turkish-American relations and therefore contributes to studies of U.S. Cold War diplomacy through transnational investment in innovation.
  • Article
    Citation - Scopus: 69
    An integrated intuitionistic fuzzy multi criteria decision making method for facility location selection
    (Association for Scientific Research, 2011) Boran,F.E.
    The facility location selection, which is one of the important activities in strategic planning for a wide range of private and public companies, is a multi-criteria decision making problem including both quantitative and qualitative criteria. Traditional methods for facility location selection can not be effectively handled because information can not be represented by precise information under many conditions. This paper proposes the integration of intuitionistic fuzzy preference relation aiming to obtain weights of criteria and intuitionistic fuzzy TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method aiming to rank alternatives for dealing with imprecise information on selecting the most desirable facility location. To illustrate the application of the proposed method, a practical application is given. Copyright © Association for Scientific Research.
  • Article
    An Ottoman Unit of Currency in the 16th Century: Kara(ca) Akce
    (Istanbul 29 Mayis Univ & Isam, 2021) Pfeiffer-Tas, Sule; Fine Arts and Elective Courses
    The problem addressed in this research is to determine the currency, called kara(ca) akce in the documents, which the Ottoman state used in the east of Anatolia during the 16th century. Except for a brief reference by Sahillioglu, there is not much information about this akce. For this reason, whether kara(ca) akce was also an accounting coin and a currency in circulation along with the Osmani akce will be discussed. The value of the kara(ca) akce in the face of the Ottoman akce is found in various documents such as the Ottoman Laws, Seriyye Sicilleri and Mahimme Registry, together with current exchange prices against other currencies such as gold, kurus etc. When this information is evaluated chronologically within the framework of the developments in Ottoman monetary history, there is a relationship proportional to the weight of the Ottoman akce. In recent research on the Ottoman numismatics at the end of the 16th century, it was found that the official weight in some Eastern mints was' lower than that of Ottoman akce. These akces differ in stylistic terms from other mints defined as the Anatolian and Rumelia groups and are named the Fastern group. Especially in the Ottoman documents related to tax and trade, the existence of this currency, which is to lower than the exchange rate against the Osmani akce, is noteworthy. In this study, an attempt will be made to prove that this coin was not only a currency that determined the exchange rate, bur it was also in circulation.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Physics-Informed Neural Network for Nonlinear Bending Analysis of Nano-Beams: A Systematic Hyperparameter Optimization
    (MDPI, 2025) Esfahani, Saba Sadat Mirsadeghi; Fallah, Ali; Aghdam, Mohammad Mohammadi
    This paper investigates the nonlinear bending analysis of nano-beams using the physics-informed neural network (PINN) method. The nonlinear governing equations for the bending of size-dependent nano-beams are derived from Hamilton's principle, incorporating nonlocal strain gradient theory, and based on Euler-Bernoulli beam theory. In the PINN method, the solution is approximated by a deep neural network, with network parameters determined by minimizing a loss function that consists of the governing equation and boundary conditions. Despite numerous reports demonstrating the applicability of the PINN method for solving various engineering problems, tuning the network hyperparameters remains challenging. In this study, a systematic approach is employed to fine-tune the hyperparameters using hyperparameter optimization (HPO) via Gaussian process-based Bayesian optimization. Comparison of the PINN results with available reference solutions shows that the PINN, with the optimized parameters, produces results with high accuracy. Finally, the impacts of boundary conditions, different loads, and the influence of nonlocal strain gradient parameters on the bending behavior of nano-beams are investigated.
  • Article
    An Integrated Intuitionistic Fuzzy Multi Criteria Decision Making Method for Facility Location Selection
    (2011) Boran, Fatih Emre
    The facility location selection, which is one of the important activities in strategic planning for a wide range of private and public companies, is a multi-criteria decision making problem including both quantitative and qualitative criteria. Traditional methods for facility location selection can not be effectively handled because information can not be represented by precise information under many conditions. This paper proposes the integration of intuitionistic fuzzy preference relation aiming to obtain weights of criteria and intuitionistic fuzzy TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method aiming to rank alternatives for dealing with imprecise information on selecting the most desirable facility location. To illustrate the application of the proposed method, a practical application is given.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 2
    Envious Gazes and Evil Eye Beads: a Self-Psychological Perspective on the Evil Eye
    (Taylor & Francis inc, 2024) Turkarslan, Kutlu Kagan; Kozak, Ekin Doga
    The evil eye, the harmful effects of the envious gaze, is a common superstitious belief in many societies around the world, including Turkey. Since ancient times, people have developed a wide variety of practices and rituals to ward off the evil eye. It is generally believed that the evil eye is motivated by one of the most challenging emotions, envy. The discussion of envy has a long history in psychoanalysis. Unfortunately, psychoanalytic self-psychology has neglected envy and confined it to the concept of fragmentation products. This paper aims to contribute a self-psychological understanding of an envy-related cultural concept, the evil eye. The evil eye-related phenomena in Turkey, such as the harmful potential of gazes, the use of talismans and amulets for protection, and the fear of praising and exhibition, are discussed from a self-psychological perspective. Several short clinical vignettes delineating the evil eye in clinical practice are presented.
  • Article
    Citation - WoS: 6
    An Unconventional Splitting for Korteweg de Vries-Burgers Equation
    (European Journal Pure & Applied Mathematics, 2015) Aydin, A.
    Numerical solutions of the Korteweg de Vries-Burgers (KdVB) equation based on splitting is studied. We put a real parameter into a KdVB equation and split the equation into two parts. The real parameter that is inserted into the KdVB equation enables us to play with the splitted parts. The real parameter enables to write the each splitted equation as close to the Korteweg de Vries (KdV) equation as we wish and as far from the Burgers equation as we wish or vice a versa. Then we solve the splitted parts numerically and compose the solutions to obtained the integrator for the KdVB equation. Finally we present some numerical experiments for the solution of the KdV, Burger's and KdVB equations. The numerical experiments shows that the new splitting gives feasible and valid results.
  • Article
    Citation - WoS: 4
    Citation - Scopus: 4
    Nonexistence of Embeddings With Uniformly Bounded Distortions of Laakso Graphs Into Diamond Graphs
    (Elsevier Science Bv, 2017) Ostrovska, Sofiya; Ostrovskii, Mikhail I.
    Diamond graphs and Laakso graphs are important examples in the theory of metric embeddings. Many results for these families of graphs are similar to each other. In this connection, it is natural to ask whether one of these families admits uniformly bilipschitz embeddings into the other. The well-known fact that Laakso graphs are uniformly doubling but diamond graphs are not, immediately implies that diamond graphs do not admit uniformly bilipschitz embeddings into Laakso graphs. The main goal of this paper is to prove that Laakso graphs do not admit uniformly bilipschitz embeddings into diamond graphs. (C) 2016 Elsevier B.V. All rights reserved.