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  • Article
    Citation - WoS: 2
    Measuring Dependence Between Electricity Consumption and Economic Indicators Via Copulas: Turkish Case
    (Gazi Univ, 2018) Evkaya, O. Ozan; Yozgatligil, Ceylan; Selcuk-Kestel, A. Sevtap; Kestel, A. Sevtap Selçuk; Mathematics
    This paper implements copulas to identify the dependence structure between electricity consumption and its cofounding indicators. To achieve this, Turkish electricity demand, its economic and sectoral indicators are taken into account. As a first step, bivariate copulas are used to identify the best fitting copula and the degree of the dependence. Thereafter, multivariate model is established using vine copulas using highly correlated variables. The empirical results confirm the added value of the proposed approach in determining numerous tail properties. We indicate that the copulas are useful to underline, especially, the tail properties of indicators in the market for decision makers.
  • Article
    Citation - WoS: 18
    Citation - Scopus: 19
    Effect of Furan, Thiophene and Selenophene Donor Groups on Benzoselenadiazole Based Donor-Acceptor Systems
    (Elsevier Science Sa, 2016) Karabay, Lutfiye Canan; Karabay, Bads; Karakoy, Merve Serife; Cihaner, Atilla
    A series of the monomers called 4,7-di(furan-2-yl)benzo[c][1,2,5]selenadiazole (OSeO), 4,7-di(thiophen-2-yl)benzo[c]11,2,5]selenadiazole (SSeS) and 4,7-di(selenophen-2-yl)benzo[c][1,2,5]selenadiazole (SeSeSe) was synthesized via a donor-acceptor-donor (D-A-D) approach. Benzoselenadiazole was used as an acceptor unit and furan, thiophene and selenophene were used as donor units. The effects of chalcogen atoms (0, S, and Se) in furan, thiophene and selenophene were investigated systematically on the properties of the monomers and their corresponding polymers (POSeO, PSSeS and PSeSeSe, respectively), which were polymerized electrochemically via potentiodynamic or potentiostatic methods. The monomers OSeO, SSeS and SeSeSe exhibited low oxidation potentials of 1.15, 1.25 and 1.19 V vs. Ag/AgCl, respectively. Intramolecular charge transfer interaction between donor and acceptor units was demonstrated from the emission spectra of the monomers. Also, the optical studies showed that the ambipolar and electrochromic polymers POSeO, PSSeS and PSeSeSe have low band gaps of 1.57, 1.47 and 1.45 eV, respectively. (C) 2016 Elsevier B.V. All rights reserved.
  • Article
    Evaluation of Space Efficiency, Structural Systems, Material Applications, and Design of High-Rise Structures in South Korea
    (Highlights of Science, 2025) Aktaş, K.O.; Zaim, A.; Aslantamer, Ö.N.; Aktas, G.G.; Ilgın, H.E.
    This study examines 61 South Korean towers, analyzing their architectural configu-rations, structural systems, material applications, and spatial efficiencies. Findings indicate a pre-dominance of central core configurations and prismatic forms, reinforcing a function-driven approach to vertical urbanism. Structural system preferences highlight the widespread use of out-riggered frames, ensuring lateral stability while optimizing floor layouts. Material selection trends reveal a reliance on concrete, aligning with global patterns, while composite materials (25%) are used in high-performance supertall structures. Functionally, residential high-rises dominate, with mixed-use (2%) and office towers (11%) remaining limited. This research also identifies an aver-age spatial efficiency of 76%, aligning with international benchmarks, though variations exist across cities due to core-to-gross floor area ratios, structural constraints, and service core alloca-tions. This research underscores South Korea’s strategic high-rise development, prioritizing space optimization, structural efficiency, and economic feasibility. However, opportunities re-main for increased functional diversity, broader hybrid material adoption, and greater integration of sustainable design innovations. These findings contribute to global skyscraper analysis, offering insights into high-rise architecture’s role in urban resilience and density management. © 2025 Aktaş et al.
  • 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.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Picone Type Formula for Half-Linear Impulsive Differential Equations With Discontinuous Solutions
    (Wiley-blackwell, 2015) Ozbekler, A.
    Picone type formula for half-linear impulsive differential equations with discontinuous solutions having fixed moments of impulse actions is derived. Employing the formula, Leighton and Sturm-Picone type comparison theorems as well as several oscillation criteria for impulsive differential equations are obtained. Copyright (c) 2014 John Wiley & Sons, Ltd.
  • Article
    Citation - WoS: 5
    Citation - Scopus: 5
    Thermally Controlled Band Gap Tuning in Cuo Nano Thin Films for Optoelectronic Applications
    (indian Assoc Cultivation Science, 2024) Delice, S.; Isik, M.; Gasanly, N. M.
    Temperature dependency of band gap in CuO nano thin films has been investigated by virtue of transmission experiments at different temperatures. Structural and morphological characterization were achieved using X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements. Analysis on the XRD diffractogram revealed the presence of monoclinic structure for the CuO. Average crystallite size was determined as 17.8 nm. Absorption characteristics in between 10 and 300 K were presented in the wavelength range of 360-1100 nm. The band gap of the CuO was found to be similar to 2.17 eV at 300 K using Tauc and spectral derivative methods. This value increased to similar to 2.24 eV at 10 K. Both methods showed that the band gap extended with decreasing temperature. Temperature dependency of the band gap was studied using Varshni relation. The band gap at absolute temperature, variation of the band gap with temperature and Debye temperature were calculated as 2.242 +/- 0.002 eV, - 5.4 +/- 0.2 x 10(-4) eV/K and 394 +/- 95 K, respectively.
  • Conference Object
    Citation - WoS: 8
    Using E-Learning in Enterprise Resource Planning (erp) Training: a Case Study To Assist Curriculum Designers in Turkey
    (Elsevier Science Bv, 2014) Dalveren, Yaser
    This article presents results of a research on integration of Enterprise Resource Planning (ERP) e-Learning model into the university curriculum. The study presented in this article aims to propose ERP e-Learning models to curriculum designers in Turkey. For this purpose, developed ERP e-Learning models are gathered from the literature although there only few ERP e-Learning models exist in the open literature. Presented ERP e-Learning models are compared, similarities and differences are discussed. From the results, ERP e-Learning models provide an innovative and effective education. This means, these technological models provide greater flexibility to the students and maximizes student learning outcomes when compared to ordinary learning. It seems that utilization of an e-Learning model in ERP training should be started from the universities. (C) 2013 The Authors. Published by Elsevier Ltd.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    A Note on Public Investment, Public Debt, and Macroeconomic Performance
    (Cambridge Univ Press, 2011) Ismihan, Mustafa; Ozkan, F. Gulcin
    This paper provides an assessment of public capital spending within a macroeconomic policy model with explicit monetary and fiscal interactions, in contrast to most of the existing analyses of public investment that utilize "real" general equilibrium models. As such, we are able to consider the interactions of public investment with inflation, taxation, and public debt. Our results indicate that a clear trade-off exists between the costs and benefits of public investment, as is the case in the existing literature. However, the use of a monetary-fiscal policy model rather than a "real" general equilibrium one enables us to trace the macroeconomic channels including monetary ones through which these costs and benefits are transmitted to the rest of the economy. To the extent that these costs and benefits vary between countries, our results provide a potential explanation for the mixed empirical findings on the real effects of public capital spending.
  • 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]
  • Conference Object
    Citation - WoS: 2
    Developing a Textbook-Based Academic Turkish Wordlist
    (Elsevier Science Bv, 2016) Dolmaci, Mustafa; Ertas, Abdullah
    Vocabulary knowledge is solid bedrock, upon which other language skills can be built. Wilkins (1972) asserted that "without grammar very little can be conveyed, without vocabulary nothing can be conveyed". Since the pioneering research of Michael West (1953), many academic or general wordlists have been published in English or in other languages. On the other hand, the lack of an Academic Turkish Wordlist which meets the academic criteria such as being collected from a valid corpus has made this research necessary in the field of teaching Turkish as a foreign language. This study aims to investigate the academic vocabulary that any Turkish language learner should have before starting to study at undergraduate programs offering Turkish medium instruction. An academic corpus derived from fifty-seven textbooks was formed so as to discover the Academic Turkish Wordlist. There were 4032442 tokens in the academic corpus and various computer software programs some of which were written for the current study were used in order to acquire the academic wordlist. Lemmas, or the groups of lexical forms with the same stem that belong to the same word class, (Francis & Kucera, 1982) were used for the creation of the Academic Turkish Wordlist. Moreover, the most frequent 11000 words from Turkish National Corpus were used to make a list of words to be excluded from the academic corpus and the final version of the Academic Turkish Wordlist contained 1010 lemmas. The Academic Turkish Wordlist covered 32% of the academic corpus and it is evident that knowing the words in the academic wordlist will help undergraduate foreign students studying Turkish improve their academic language skills, especially reading comprehension. The Academic Turkish Wordlist could be utilized in various ways: 1) to check out language learning materials in order to find out how many low/high frequency words they contain 2) to compare students' writings in terms of how many academic words they are able to use 3) to prepare proficiency exams 4) to revise their language program in order to include more academic words to prepare their students for undergraduate programs. (C) 2016 Published by Elsevier Ltd.