Browsing by Author "2"
Now showing items 141-160 of 398
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An EOQ model with deteriorating items and self-selection constraints
Önal, Mehmet; Kundakcıoğlu, Ömer Erhun (Springer Nature, 2020-09)In this paper, we consider a store that sells two vertically differentiated items that might substitute each other. These items do not only differ in quality and price, but they also target two different customer segments. ... -
Equivalent circuit for capacitive micromachined ultrasonic transducers to predict anti-resonances
Kemal, Remzi Erkan; Bozkurt, A.; Yaralıoğlu, Göksen Göksenin (Springer Nature, 2020-12)Equivalent circuit models have been long used to evaluate the dynamics of the capacitive micromachined ultrasonic transducer (CMUT). An important parameter in the characterization of a CMUT is the anti-resonance frequency, ... -
Error rates and uncertainty reduction in rule discovery
Aktunç, Mahir Emrah; Hazar, Ceren; Baytimur, Emre (Springer Nature, 2020-06)Three new versions of Wason's 2-4-6 rule discovery task incorporating error rates or feedback of uncertainty reduction, inspired by the error-statistical account in philosophy of science, were employed. In experiments 1 ... -
A European view on the next generation optical wireless communication standard
Jungnickel, V.; Uysal, Murat; Serafimovski, N.; Baykas, T.; O’Brien, D.; Ciaramella, E.; Ghassemlooy, Z.; Green, R.; Haas, H.; Haigh, P. A.; Gil Jimenez, V. P.; Miramirkhani, Farshad; Wolf, M.; Zvánovec, S. (IEEE, 2015)Optical wireless technology uses light for mobile communications. The idea is to simultaneously combine the illumination provided by modern high-power light-emitting diodes (LEDs) with high-speed wireless communications. ... -
Evaluating the impact of building envelope on energy performance: Cooling analyses
Azima, Mahshad; Seyis, Senem (Golden Light Publishing, 2022-03-31)Buildings require a significant amount of energy for heating, cooling, and lighting. Hence, building energy performance has become one of the most important topics in the architecture, engineering, and construction (AEC) ... -
Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy
Şimşek, Görkem Muttalip; Ipekoglu, M.; Yapıcı, Güney Güven (Springer Nature, 2020-08-02)Successful short-term implementation of nickel-titanium (NiTi) alloys as implants has been a motivation for the development of long-term applications. However, rendering these as safe implant materials is challenging. The ... -
Exact and heuristic approaches to detect failures in failed k-out-of-n systems
Yavuz, Tonguç; Kundakcıoğlu, Ömer Erhun; Ünlüyurt, T. (Elsevier, 2019-12)This paper considers a k-out-of-n system that has just failed. There is an associated cost of testing each component. In addition, we have apriori information regarding the probabilities that a certain set of components ... -
Examining Toddlers’ problem behaviors: the role of SES, parenting stress, perceived support and negative intentionality
Arıkan, Gizem; Kumru, Asiye; Korkut, B.; İlhan, Ali Oğulcan (Springer Nature, 2019-12)ObjectivesWe aimed to explore profiles of mothers with respect to two key risk factors, SES and parenting stress, and then examine the role of maternal perceived social support and negative intentionality in toddlers' ... -
Exergy efficiency for radiation heat transfer
Mohammed, Hayder Noori; Mengüç, Mustafa Pınar (IOP Publishing, 2020)One of the evaluation criteria for the performance of thermal processes is exergy analysis. Along with energy analysis, exergy calculations provide a clear and highly effective understanding of the performance of a system. ... -
Existential antagonisms: Boundary work and the professional ideology of Turkish industrial designers
İlhan, Ali Oğulcan; Er, Hamit Alpay (MIT Press, 2016)Industrial design (ID) is a fairly young and largely unknown profession in Turkey. Although significant developments have taken place in the field of ID in the past 15 years, the scope of scholarly attempts to analyze the ... -
An experimental and computational study on efficiency of white LED packages with a thermocaloric approach
Yuruker, S. U.; Tamdogan, Enes; Arık, Mehmet (IEEE, 2017)Thermal management of light-emitting diode (LED) chips is crucial for light extraction and lifetime. It is well known that the light output of an LED decreases with the elevated temperatures. For higher light extraction, ... -
Experimental investigation on the effect of wavelength on aperture averaging in FSO communications
Nouri, Hatef; Uysal, Murat (The Optical Society, 2020-06-01)Atmospheric turbulence is a major impairment in free-space optical (FSO) communication systems. Based on the fact that the size of receiver aperture is much larger than operation wavelength, aperture averaging extracts ... -
Experimental validation of a novel RLL code for visible light communication
Yagan, M. Y.; Kısacık, Rıfat; Erkinaci, T.; Pusane, A. E.; Uysal, Murat; Baykas, T.; Dundar, G.; Yalcinkaya, A. D. (IEEE, 2020)Flicker arising in visible light communication (VLC) system is typically mitigated by run-length-limited (RLL) codes. The IEEE 802.15.7 standard proposes RLL codes according to the modulation type and data rate. In this ... -
Exploring source use, discourse features and their relation to proficiency in source-based writing assessment in a turkish eap context
Yalçın Duman, Ayla; Göktürk Sağlam, Aslı Lidice (Karadeniz Technical University, 2020-06)Source-based writing, using content from reading texts into writing, constitutes a prominent aspect of academic writing. Both research and classroom practice have demonstrated that effective use of sources poses challenges ... -
Exploring the mutual relationship between research and consultancy for a commercial design product in the area of communication design
Yıldırım, Yasemin; Orhun, Simge Esin (International Institute of Informatics and Systemics, IIIS, 2017)Due to challenges brought by the advancements in information technologies, transferring the knowledge and obtaining effective solutions in the early design process has gained importance, as it has become very difficult to ... -
Extending borders: A blended learning project to promote language learning
Elpe, Nergis Enmutlu; Coşgun, Gülçin (2013-04-12)Our presentation highlights how blended learning can aid the achievement of objectives in relation to student engagement in language learning, and models the application of the method as a curriculum initiative in a ... -
F-Shaped Monopole Antenna
İncesulu, Hakan; Ulutaş, Gül; Bilge, Hakan; İmeci, Ş. T.; Durak, T. (IEEE, 2017)In this paper, effects of F antenna arm length on the frequency, gain and s11 values are studied. The arms and the total length of the F determine the resonance frequency of the antenna. The inverted F shaped antennas are ... -
Factors affecting students’ English proficiency in a Turkish EMI University: a phenomenological study
Hasırcı, Bahar; Coşgun, Gülçin (World Council for Curriculum and Instruction (WCCI), 2018)This paper reports on an investigation of Turkish English-medium university students’ perceptions of the change in their language ability and the factors affecting this change. Results revealed that 1) when students are ... -
FAS: introducing a service for avoiding faults in composite services
Gülcü, K.; Sözer, Hasan; Aktemur, Tankut Barış (Springer Science+Business Media, 2012)In service-oriented architectures, composite services depend on a set of partner services to perform the required tasks. These partner services may become unavailable due to system and/or network faults, leading to an ... -
Fast incremental least square pose estimation for hardware implementation with rolling shutter camera
Güzel, Aydın Emre; Hisar, Dilara; Claesen, L.; Uğurdağ, Hasan Fatih (IEEE, 2020-10-05)6 DoF position and orientation estimation is vital for many real-time applications. It is essential to meet low latency, high accuracy and reliability requirements, especially when used for real-time haptic feedback ...
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