WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/4465

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Citation - WoS: 3
Citation - Scopus: 4
Transitional Butterworth-Chebyshev Filters
(IEEE, 2019) Şengül, Metin Y.
Filters which are studied in this paper have properties that lie between those of the Butterworth and Chebyshev filters. So it is appropriate to call this kind of filters as transitional Butterworth-Chebyshev filters. In this work different 6 th order transitional filters are designed and their responses are compared with each other. © 2018 IEEE.
Citation - WoS: 8
Citation - Scopus: 9
A it-Electron Rich Cage via the Friedel-Crafts Reaction
(Amer Chemical Soc, 2022) Zhu, Dingsheng; Sun, Bin; Tong, Lu; Wu, Yating; Cetin, Mustafa; Li, Hao
A prism-shaped cage was obtained via the Friedel-Crafts reaction in a 2:3 mixture of trisfuryl and bis-isopropenyl precursors, in a remarkable yield of 40% considering six C-C bonds formed in a one-pot manner. The cage contains two pi-electron rich trisfuryl platforms bridged in a face-to-face manner with three p-xylylene linkers. Therefore, it enables accommodation of pi-electron poor guests with complementary size, including biscationic viologen.
Citation - WoS: 7
Citation - Scopus: 7
Corporate Governance and Tunneling: Empirical Evidence From Turkey
(Economics Bulletin, 2018) Akben Selçuk, Elif; Sener, Pınar
This study investigates whether internal governance mechanisms affect tunneling through intercorporate loans for a sample of Turkish listed non-financial firms over the period 2006 to 2014. While the findings reveal a significant and positive relationship between state ownership and tunneling and a significant and negative relationship between foreign ownership and tunneling the relationship between family ownership and tunneling is non-linear. In addition while board size is negatively associated with tunneling independent directors do not prevent the embezzlement of resources. Furthermore the results indicate that while older firms firms with family chairman and higher growth opportunities are more likely to engage in tunneling activities firm size high cash holding leverage and financial distress do not affect tunneling.
Citation - WoS: 9
Citation - Scopus: 10
Art Investment: Hedging or Safe Haven Through Financial Crises
(Springer, 2020) Öztürkkal, Belma; Toğan-Eğrican, Aslı
We analyze long-term art auction sales data focusing on and around financial crisis periods with other investment returns to understand whether art can be considered a safe haven during volatile times or a hedging option in general by analyzing art auction data in a volatile emerging market. Our findings suggest Turkish art returns are either negatively correlated or at low correlation with other investments, including the equity market. We have the view that art can be considered a hedging mechanism on average to enhance returns and to decrease the risk of portfolios and improve diversification. However, we do not discard the safe-haven hypothesis, either. Although the auction data on the crisis period is limited, results of and around crisis periods show art returns are positively correlated with various volatility indices. In addition, the number of art transactions also increases after the crisis years, which may be a sign of liquidity requirement of some investors and an opportunity for buyers. The benefit is visible especially during years of contractions, which do not end with a very severe crisis, since the art auction market liquidity dries if the crisis is severe.
Folfox4 in Metastatic Colorectal Cancer (mcrc) Patients Who Progressed After Infusional 5-fu/Irinotecan Based Combination Regimens
(AMER SOC CLINICAL ONCOLOGY, 2004) Dane, Faysal; Yumuk, Perran Fulden; Turhal, Nazım Serdar; Ekenel, Meltem; Başaran, Gül; İyikesici, Mehmet Salih; Tecimer, Coşkun
[Abstract Not Available]
A Holistic Empirical Approach To Marketing Activities and Performance Interaction in Banking Industry: the Mediating Role of Customer-Based Brand Equity
(Emerald Publishing, 2025) Akdogan, C.B.; Uray, N.; Ulengin, B.; Kiygi-Calli, M.
Purpose: This paper aims to examine the direct impacts of marketing resources and marketing activities on several business performance indicators in the banking industry and the indirect effects through customer-based brand equity. Design/methodology/approach: We use a holistic empirical approach based on resource-based view and marketing productivity chain. The main study consists of a secondary analysis using quarterly data of fourteen banks over four years. We analyze the data using fixed-effect panel data regression, namely seemingly unrelated regressions. Findings: We find that customer-based brand equity is one of the most influential factors on business performance. Moreover, the indirect effect through customer-based brand equity should be considered in improving business performance. Marketing-related financial resources positively impact customer-based brand equity and business performance. Regarding marketing activities, pricing strategies affect the bank preferences of customers, which in turn affect the growth of deposit volumes and churn rates. Additionally, the number of bank branches positively impacts business performance. Advertising spending on different media has differentiated impacts on the performance indicators; thus, the allocation of advertising budget and advertising planning are critical. Originality/value: This study examines the inter-relationships among marketing resources, marketing activities, consumer response through brand equity and marketing performance. This study contributes to the literature by integrating the resource-based view and the marketing productivity chain to analyze the inter-relationships using panel data and several sector-related metrics. This study provides valuable insights to decision-makers in the banking industry. © 2024, Emerald Publishing Limited.
Citation - WoS: 3
Relationship between dyslipidemia C-Reactive Protein and serological evidence of chlamydia pneumoniae in Turkish patients with coronary artery diseases
(Luigi Ponzio E Figlio, 2004) Türkoğlu, Celalettin; Sönmez, Emine; Aydınlı, Aydın
Relationship between dyslipidemia C-Reactive Protein (CRP) and serological evidence of Chlamydia pneumoniae was investigated in a Turkish population with coronary artery disease. This prospective randomized blinded study was carried out in Florence Nightingale Hospital which is affiliated to Kadir Has University Medical Faculty. Thirty-two patients with acute coronary artery diseases (ACAD) 32 patients with chronic coronary artery diseases (CCAD) and 26 healthy controls (HC) were included in the study We detected serum concentrations of C. pneumoniae IgG IgA and IgM by ELISA method. We measured total cholesterol trigliseride LDL and HDL- cholesterol levels to determine dyslipidemia which was defined as total cholesterol >200 mg/dL trigliserid > 150 Mg/dL LDL >130 mg/dL HDL <45 mg/dL. CRP levels were also measured. Seropositivity to C. pneumoniae IgG was 84.3% 100% and 65.3%
Citation - WoS: 28
Citation - Scopus: 31
Corporate Esg Engagement and Information Asymmetry: the Moderating Role of Country-Level Institutional Differences
(Routledge Journals, Taylor & Francis Ltd, 2022) Bilyay-Erdogan, Seda
The purpose of this study is to examine: (i) the impact of corporate environmental, social, and governance (ESG) performance on asymmetric information and (ii) whether this relationship differs for countries with different legal and governance systems. Employing an extensive sample (covering 21 countries from Europe) for an extended time frame (2002-2019), we present evidence that overall corporate ESG performance reduces information asymmetry. Moreover, environmental, social, and governance pillars separately contribute to this significant relationship. Within the ten subcategories of the ESG score, only the emissions, workforce, human rights, product responsibility, and management scores significantly and negatively affect asymmetric information. We also present novel evidence that the inverse relationship between corporate ESG performance and information asymmetry is more pronounced in civil law and stakeholder-oriented countries, but not in common law and shareholder-oriented countries. Our findings demonstrate that firms' country-level institutional context moderates the association between ESG performance and information asymmetry.
Citation - WoS: 65
Citation - Scopus: 64
Economic Policy Uncertainty and Climate Change: Evidence from CO2 Emission
(Springer, 2023) Benlemlih, Mohammed; Yavas, Cigdem Vural
In this paper, we study the relationship between Economic Policy Uncertainty (EPU) and carbon dioxide (CO2) emissions. Using an extensive dataset from 23 countries consisting of 6800 firm-year observations, we provide strong evidence that EPU increases firms' CO2 emissions. Our main inference is robust when using alternative measures of CO2 emissions and EPU, alternative econometric specifications and samples, and several approaches to control for possible endogeneity. In a set of additional analyses, we first show that a board's characteristics (i.e., board gender diversity and board independence) significantly moderate the studied relationship. Second, cross-country characteristics (i.e., government effectiveness, control of corruption, and democracy) seem important in the relationship between EPU and CO2 emissions. Our findings significantly contribute to the debate on firms' ethical responsibility in managing climate change and CO2 emissions.
Citation - WoS: 1
Technology Is Our Friend: Using Technology To Teach English Learning Strategies
(Nesibe Aydin Education Inst, 2013) Munzur, Zeynep
This paper examines the implementation of technology enhanced learning which is based on digital resources and its benefits specifically in a reading course at an English prep school. The paper describes the findings that contribute to the impact of technology tailored teaching on students' learning. Positive impacts are evident if the lesson is carefully planned, structured and integrated. In particular, it provides that there is a direct relationship between the way lessons are presented with the use of digital resources, and the progress students showed during a limited period of time. By no means, technology guarantees significant change in the students' progress in learning English. This study employed a structured questionnaire, classroom observations, and student interviews to examine the impact of technology tailored teaching. The results indicated that as the level and length of time digital teaching increases, students' attitudes towards the lessons show more positive results. The data collected in this study support the idea that technology combined with effective instruction can show positive results for students and teachers. However, although the data are promising, they are preliminary.
Citation - WoS: 2
Citation - Scopus: 2
Understanding the Immediate and Longitudinal Effects of Emotion Reactivity and Deviation From the Balanced Time Perspective on Symptoms of Depression and Anxiety: Latent Growth Curve Modeling
(Springer int Publ Ag, 2024) Ranjbar, Hamed Abdollahpour; Altan-Atalay, Ayse; Eskin, Mehmet
Emotion reactivity (ER) captures the depth, sensitivity, and endurance of our emotional reactions, while deviation from a balanced time perspective (DBTP) characterizes our inflexibility and rigidity in adhering to specific time frames. This study investigates how ER and DBTP might predict the symptoms of depression and anxiety and DBTP's mediating role between ER and the symptoms of anxiety and depression in a three-wave longitudinal investigation. Data from 148 university students (82 males, 55.4%) with the age range of 18-29 (Mage = 19.92, SDage = 1.36) were collected at three time intervals using Emotion Reactivity Scale, Zimbardo Time Perspective Inventory, Future Negative subscale, Generalized Anxiety Disorder-7, and Patient Health Questionnaire-9. The study utilized latent growth curve modeling (LGCM) within a structural equation modeling framework. Results showed that greater DBTP at baseline predicted increased anxiety and depression symptoms and longitudinally reduced anxiety symptoms. The mediation model clarified that, initially, DBTP mediated the relationship between ER and anxiety/depression symptoms; however, over time, DBTP functioned as a suppressor of anxiety symptoms. This study establishes DBTP's predictive and dynamic significance for anxiety and depression, unveiling its mediating role in the interplay with emotional reactivity. These findings can inform tailored therapies addressing ER and temporal biases in this population.
Citation - WoS: 50
Citation - Scopus: 52
The Dikili-Candarli Volcanics, Western Turkey: Magmatic Interactions as Recorded by Petrographic and Geochemical Features
(Tubitak Scientific & Technological Research Council Turkey, 2007) Karacik, Zekiye; Yilmaz, Yuecel; Pearce, Julian A.
Located in the northwestern part of the Aegean region, Dikili- Candarli volcanic suite contains products representative for the western Anatolian Miocene volcanism. They can be divided into two main groups: the Dikili and the Candarli groups. The Dikili group is Early - Middle Miocene in age and consists mainly of pyroclastic rocks, andesitic- dacitic lavas, lava breccia, lahar flows and associated sedimentary rocks. The lavas contain disequilibrium phenocrysts assemblages. The Candarli group consists of Upper Miocene - Pliocene lava and sediment associations. The volcanic rocks consist mainly of rhyolitic domes and basaltic trachyandesite- basaltic andesite lavas erupted along the NW - SE- and NE - SW- trending fault systems; the faults controlled the development of the Candarli depression. Major- and trace- element chemistry indicates that the lavas are dominantly high- K, calc- alkaline, intermediate to acidic in composition. Chemical and textural characteristics of the minerals reveal that mixing was a common process in the generation of this magma. In particular, petrography, textural evidence and crystal chemistry of the phenocrysts together with variations in rock compositions indicate that basaltic- basaltic andesitic magma intruded dacite magma and is partially hybridized with it. New petrographic and geochemical data of Dikili-Candarli volcanics are closely similar to those of the active continental margin volcanism which are interpreted as mantle- derived magmas contaminated by crustal materials.
Citation - WoS: 9
Citation - Scopus: 12
Implicit Evaluations About Driving Skills Predicting Driving Performance
(Elsevier Science, 2018) Bıçaksız, Pinar; Harma, Mehmet; Doğruyol, Burak; Lajunen, Timo; Özkan, Türker
Self-reported measures of driving skills have the potential shortcomings of the general self report methodology such as social responding and self-enhancement biases. In the present study the Implicit Association Test (IAT) procedure was adapted to measure the implicit evaluations of driving skills. The performance of IAT and an explicit self-report measure of driving skills were compared in predicting driver behaviors and performance. Ninetyone Turkish male drivers participated in the study. The results showed that the implicit test and the self-reported driving skills scale showed different patterns of relationships with the outcome measures in the regression analyses. In addition the implicit measure of driving skills moderated the relationship between self-reported driving skills and some of the outcome measures used in the current study. These results support the need to use the implicit measures in addition to self-report measures to better understand drivers evaluations of their driving skills which has the potential to influence their risky driving. (C) 2018 Elsevier Ltd. All rights reserved.
Citation - WoS: 6
Citation - Scopus: 8
Humour as Resistance? A Brief Analysis of the Gezi Park Protest Graffiti
(Amsterdam Univ Press, 2015) Yanık, Lerna K.
[Abstract Not Available]
Citation - WoS: 22
Citation - Scopus: 22
Examining the Impact of the Fear of Missing Out on Museum Visit Intentions
(Sage Publications Inc, 2023) Uslu, Abdullah; Tosun, Petek
This study investigates the influence of the desire for continuous learning, fear of missing out (FOMO), involvement, and enjoyment from the virtual travel experience (VTE), on museum visit intentions. The direct impacts of FOMO, consumer attitudes, and subjective norms on visit intentions were examined within a conceptual research model that combines the theory of reasoned action (TRA) and self-determination theory (SDT). Survey data obtained from 385 potential tourists were analyzed by PLS-SEM. Findings revealed that the desire for continuous learning positively influences FOMO, and involvement positively affects attitudes toward museum visits, which, in turn, increases visit intentions. Enjoyment from the VTE moderates the attitude-visit intentions relationship. This study has extended previous findings by proposing and empirically testing an original framework for examining behavioral intentions. It has shown the significant impact of the desire for continuous learning on FOMO, which operates as a self-regulatory feeling and increases museum visit intentions.
Citation - WoS: 2
Citation - Scopus: 5
Analysis of deep learning based path loss prediction from satellite images
(IEEE, 2021) Alam, Muhammad Z.; Ates, Hasan F.; Baykas, Tuncer; Gunturk, Bahadir K.
Determining the channel model parameters of a wireless communication system, either by measurements or by running electromagnetic propagation simulations, is a time-consuming process. Any rapid deployment of network demands faster determination of at least major channel parameters. In this paper, we investigate the idea of using deep convolutional neural networks and satellite images for channel parameters (i.e., path loss exponent n and shadowing factor sigma) prediction in a cellular network with aerial base stations. Specifically, we investigate the performance dependency of the method on three different factors: height of the transmitter antenna, quantization levels of the channel parameters and architectural design of CNN. The results presented in this paper show a high prediction accuracy of the channel parameters in real-time.
Citation - WoS: 2
Citation - Scopus: 2
Altered Dynamics of S. Aureus Phosphofructokinase Via Bond Restraints at Two Distinct Allosteric Binding Sites
(Academic Press Ltd- Elsevier Science Ltd, 2022) Celebi, Metehan; Akten, Ebru Demet
The effect of perturbation at the allosteric site was investigated through several replicas of molecular dynamics (MD) simulations conducted on bacterial phosphofructokinase (SaPFK). In our previous work, an alternative binding site was estimated to be allosteric in addition to the experimentally reported one. To highlight the effect of both allosteric sites on receptor's dynamics, MD runs were carried out on apo forms with and without perturbation. Perturbation was achieved via incorporating multiple bond restraints for residue pairs located at the allosteric site. Restraints applied to the predicted site caused one dimer to stiffen, whereas an increase in mobility was detected in the same dimer when the experimentally resolved site was restrained. Fluctuations in C-alpha-C-alpha distances which is used to disclose residues with high potential of communication indicated a marked increase in signal transmission within each dimer as the receptor switched to a restrained state. Cross-correlation of positional fluctuations indicated an overall decrease in the magnitude of both positive and negative correlations when restraints were employed on the predicted allosteric site whereas an exact opposite effect was observed for the reported site. Finally, mutual correspondence between positional fluctuations noticeably increased with restraints on predicted allosteric site, whereas an opposite effect was observed for restraints applied on experimentally reported one. In view of these findings, it is clear that the perturbation of either one of two allosteric sites effected the dynamics of the receptor with a distinct and contrasting character. (c) 2022 Elsevier Ltd. All rights reserved.
Citation - WoS: 1
Citation - Scopus: 2
The Impacts of Processes of Digitalization on the Reception of Contemporary Art in Turkey During Covid-19
(Routledge Journals, Taylor & Francis Ltd, 2023) Selen, Eser; Sunam, Aylin; Akin, Afife Idil; Bicakci, Hilal; Kaplan, Arda
During the Covid-19 pandemic, internet-based technologies have become a lifeline for artists, art professionals, and audiences. The widespread usage of digital formats and techniques in the production and presentation of artworks has made contemporary art practices more accessible and thus open to being experienced. On that point, we ask: How has contemporary art, which rapidly shifted to digital platforms soon after the outbreak of the pandemic, been received in light of these transformations? By means of an online survey (N = 627), we examined the art-viewing habits of contemporary art audiences in Turkey, exploring how they have changed in the course of the pandemic and how that shift has been reflected in their experiences. Our findings reveal that while audiences have been willing to engage with online art content, the virtual realm cannot and will not be able to replace the physical experience of going to art venues in person.
Quit Smoking Search Interest in Google Trends From Turkey, Uk, France, Italy, and Germany: What Happened During the Covid-19 Pandemic?
(European Respiratory Soc Journals Ltd, 2021) Uysal, Mehmet; Niksarlioglu, Elif Yelda; Cifter, Atilla; Carkoglu, Asli
[Abstract Not Available]
Docking-Based Virtual Screening for Potential Activity Against Bacterial Pyruvate Kinase
(Springer, 2017) Ergün, Çağla; Akten, Ebru Demet; Doruker, Pemra
[Abstract Not Available]

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