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Now showing 1 - 10 of 953
  • Book Part
    Citation - WoS: 61
    Citation - Scopus: 66
    Use of Waste Bread To Produce Fermentation Products
    (Elsevier Academic Press inc, 2013) Melikoglu, Mehmet; Webb, Colin
    [No Abstract Available]
  • Conference Object
    A Solution To the Adhesion Problem of Oxide Thin Films on Zinc Selenide Optical Substrates
    (Soc Vacuum Coaters, 2016) Cosar, M. B.; Aydogdu, G. H.; Batman, H.; Ozhan, A. E. S.
    Zinc selenide optical substrates have high transparency within the 0.5- to 14.0-mu m wavelength range. This makes them an attractive candidate for multiband imaging applications in optical components. In order to minimize reflection loss in visible, near-infrared, and mid-infrared applications, zinc selenide lenses are coated with multi-layered oxide thin films by physical vapor deposition method or ion beam deposition. In this study, a four-layer anti-reflective filter at 1.064 gm and between 3.6 and 4.9 gm is applied to zinc selenide using an ion beam deposition system. The filter is used for a dual-beam optical application. The filter is composed of metal oxide layers that have an adhesion problem on zinc selenide. In order to solve this adhesion problem they were heat-treated at 300 degrees C for varying amounts of time prior to metal oxide coating. Treated samples were characterized in terms of their roughness, contact angle, morphology, refractive index, transparency, crystallography and chemical composition. Results show that it is possible to manufacture durable oxide thin film coatings on zinc selenide, by using a well-designed pre-treatment processes.
  • Article
    Citation - WoS: 4
    Citation - Scopus: 4
    An Integrated Economy-Demography Model Reframed in a System Dynamics Setting
    (Wiley, 2019) Dural-Selcuk, Gozdem; Tunc, Huseyin; Tarim, S. Armagan
    In recent history, there has been an increasing concern about population aging and the associated increased economic burden in terms of high health-care expenses and pension payments. The need for decision support tools that can explore population dynamics has become a prominent issue. This study presents a comprehensive framework where one can scrutinize the key demographic drives of fertility (Total Fertility Rate/Age-Specific Fertility Rate) over macroeconomic indicators (technology, education, human capital) under exogenous mortality. The integrated model in this article is developed based on a reformulation of the unified growth theory. In the reformulated model, namely the "economy-demography model," the population age/sex structure is preserved, age-specific mortality is included, and fertility is measured in conventional demographic terms. The model is then presented in system dynamics framework, and its practical use is showcased with data obtained from the Turkish Statistical Institute. Copyright (c) 2020 System Dynamics Society
  • Article
    Citation - WoS: 32
    Citation - Scopus: 32
    Capacitance, Conductance, and Dielectric Characteristics of Al/Tio2< Diode
    (Springer, 2021) Gullu, H. H.; Yildiz, D. E.
    In this study, electrical properties of the Al/TiO2/p-Si diode structure with an atomic layer deposited TiO2 interface layer are investigated by current-voltage (I-V), capacitance-voltage (C - V), and conductance-voltage (G - V) measurements. It shows a rectifying behavior with about four order of rectification factor, and barrier height and ideality factor are calculated from the rectification curve. Dielectric parameters are determined from frequency-dependent C - V and G - V relations. The experimental results show that both of these curves are in a strong response to the frequency and bias voltage. They are found in decreasing behavior with increasing frequency, and both of them increase with increase in bias voltage although there are different increasing trends. At reversed bias voltage region, barrier potential, Fermi level energy, and interface charge carrier contribution are evaluated by using 1/C-2 - V plot. Series resistance values are also calculated under the variation of frequency and voltage. Thus, the capacitive characteristics of the diode are corrected by eliminating series resistance contribution together with the possible effect on interface charge carriers. Detailed information is obtained by determining electronic parameters affected by interface states over a wide frequency range (1 kHz to 1 MHz). At this point, strong response to the frequency is observed for the dielectric constant. Under the effect of interfacial polarization at low-frequency region, interface charge contribution to the capacitive response of the diode is obtained. Further analysis is performed on electrical modulus and impedance values derived from experimental dielectric data. Existence of interfacial layer capacitance is detailed by extracting distribution of interface charges from capacitance and conductance profiles of the diode under the effect of frequency.
  • Conference Object
    Citation - Scopus: 1
    Ontology Based Virtual Enterprise System Domain Modeling
    (DEStech Publications Inc., 2014) Lotfi Sadigh,B.; Ünver,H.Ö.; Dogdu,E.; Kiliç,S.E.
    A virtual enterprise (VE) is a product oriented temporary consortium which forms a collaboration platform to fulfil a specific common purpose (typically to create a product) by benefiting from various capabilities of multiple VE partner enterprises. VE lifecycle consists of 3 distinct phases including VE Formation, Operation and Dissolution. VE partner enterprises are selected from virtual breeding environment (VBE) based on specific criteria considering the new VE project specifications. In order to select the most appropriate partners for the forthcoming VE project, it is required to have comprehensive information regarding the VBE members, their current conditions, capabilities, capacities and their past performances. This database continuously changes and it is dynamic. Ontologies and the corresponding knowledge bases provide the best tools for modelling such complex domain knowledge and highly dynamic data requirements. Ontologies not only help model and capture complex domain knowledge, but also improve the sharing and reusability of data and knowledge providing a suitable environment for software agents and human communications. The VE system must be able to demonstrate what types of resources exist, where they are located, and how much resource capacity is available to be used by the consortium. In this paper a pilot Virtual Enterprise system model developed for OSTIM organized industrial park in Ankara will be presented in detail. The objective of this system model is to enable SMEs in the region to collaborate effectively in order to produce eco-friendly high value added products. © Copyright 2014 by DEStech Publications, Inc. All rights reserved.
  • Conference Object
    A Fast Hough Transform Approximation and Its Application for Barcode Localization
    (Ieee, 2007) Safran, Mehmet Ilhami; Oektem, Rusen
    This paper addresses barcode localization in images acquired by wireles cameras. For this purpose, a fast Hough transform approximation by use of a sliding mask is developed. The approximation decomposes the lines at different orientations into distinct bitplanes. Barcode localization is achieved by considering the high density locations in the bitplanes via morphology and profiling. The time complexity of the proposed approximation is lower than the previously proposed fast Hough transform, though it achieves the equal performance in localization of barcodes.
  • Book Part
    Citation - WoS: 19
    Citation - Scopus: 17
    Hot formed steels
    (Woodhead Publ Ltd, 2017) Billur, E.
    [No Abstract Available]
  • Editorial
    Can Military Zones Be an Opportunity for Revitalizing Ankara's Green Belt and Upper Scale Urban Planning?
    (Kare Publ, 2016) Sahin, Savas Zafer
    [No Abstract Available]
  • Book Part
    Citation - Scopus: 2
    Unveiling the Portrayal of Intimate Partner Violence Against Women in the Media: Insights From an Honor Culture
    (IGI Global, 2023) Akbaş,G.; Ceylan-Batur,S.
    Intimate partner violence (IPV) against women is a pervasive global issue. The media plays a significant role in shaping society's perceptions and understanding of IPV. This study focuses on the representation of femicide in Turkish newspapers, with a specific focus on the context of Turkey as an honor culture characterized by a distinct emphasis on female sexual purity and male dominance. Honor cultures often justify violence against women in the name of preserving honor. This research aims to investigate how newspapers depict honor-based IPV through quantitative analysis, content analysis, discourse analysis, and frame analysis of femicide cases. The findings reveal that newspapers frame IPV within an honor culture by victim-blaming and justifying men's violent behavior. Additionally, news coverage often portrays honor-based IPV as isolated incidents, failing to recognize its reflection of the broader honor culture. These portrayals inadvertently perpetuate and legitimize IPV, discouraging women from seeking assistance and support. © 2023, IGI Global. All rights reserved.
  • Review
    Capitalism Hits the Fan: the Global Economic Meltdown and What To Do About It
    (Akademiai Kiado Zrt, 2014) Temel, Bulent; Temel, Bülent Azmi; Temel, Bülent Azmi; Department of Business; Department of Business
    [No Abstract Available]