TR-Dizin İndeksli Yayınlar Koleksiyonu

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5G uygulamaları için bant-dışı baskılamalı bütünleşik M-YTED filtre-yama anten tasarımı ve üretimi
(2024) Sibel Yenikaya; Mustafa SECMEN; kemal güvenli
Bu makalede 5G uygulamaları için 5.90 GHz rezonans frekanslı ve bant-dışı baskılamalı bütünleşik M-YTED (Mikroşerit-Yalıtkan Taban Entegreli Dalga Kılavuzu) bant geçiren filtre-yama anten (BMBGF-YA) tasarımı CST (Computer Simulation Technology) Studio Suite programı kullanılarak ortaya konulmuş ve üretimi yapılarak ölçülmüştür. 1.50-12.00 GHz geniş çalışma frekansı bölgesindeki bant-dışı frekanslar BMBGF-YA tasarımında baskılanmıştır. Filtre-antenin yama antene göre simülasyon sonuçlarındaki anten kazancı artışı %0.32 ve bant-içi frekans aralığı artışı %22’dir. Yapılan ölçümde anten kazancı artışı %0.78 ve bant-içi frekans aralığı artışı %14.4 olarak gerçekleşmiştir.
A bibliometric analysis of extended reality research trends in communication studies written in English Mapping the increasing adoption of extended reality technologies
(ISTANBUL UNIV FAC COMMUNICATION, 2024-07-12) Simge Ugurluer; Mert Seven
With the development of communication technologies extended reality technologies and applications are increasingly favoured because of their potential to contribute to interactive digital experiences. In addition to providing information about objects the integration of extended reality offers an enriched experience through a virtual layer that includes various interactions. This paper offers a quantitative and systematic review of studies published in the Web of Science Science Citation Index Expanded (SCI-EXPANDED) Social Sciences Citation Index (SSCI) Emerging Sources Citation Index (ESCI) and Arts & Humanities Citation Index (AHCI) on extended reality technology in communication studies in English between 1992 and 2023. Within the scope of this research studies on the concepts of mixed reality augmented reality virtual reality and extended reality in journals indexed in the Web of Science (WOS) database were searched. A total of 209 publications were included in the scope of the bibliometric analysis with filters for publication type language open access category and subject. Bibliometric tools were employed to identify trends in extended reality and communication studies including primary research topics and clusters interdisciplinary distribution productivity and collaboration at the country level keyword and citation networks and co-occurrence networks. These findings contribute to the understanding of the evolution of extended reality research in communication studies and lay a foundation for further research.
Citation - WoS: 1
A BRIEF INTRODUCTION TO SUZUKI TALENT EDUCATION
(ANADOLU UNIV, 2016) Zehra Sak Brody; Brody, Zehra Sak
The Suzuki teaching method was created by Japanese violinist and pedagogue Shinichi Suzuki. The central tenet of his philosophy was that talent is not inborn, it can be gained through proper education. Therefore assuming that a child does not have some physical handicap 'every child can play'. Eventually it became one of the most popular teaching methods in the world. Suzuki started with the insight that if all children learn to speak their native tongues with the utmost fluency they must have the ability to learn to play an instrument fluently. The method is thus referred to as the 'Mother Tongue Method'. He believed that if a child starts at an early age learns with small steps and uses a violin of an appropriate size he or she could play the violin. The difference between the Mother Tongue Method and other traditional methods is that it starts at a very early age and includes the family - especially the mother - in the learning process. The formation of a cooperative triangle of teacher-parent-student is very important. Perhaps the most important factor in the success of this method is that Suzuki believed that children need to be taken seriously and that if they are they have the ability to learn and achieve anything.
A Canonical 3-D P53 Network Model that Determines Cell Fate by Counting Pulses
(2018-08-03) Gökhan Demirkıran; Güleser Kalaycı Demir; Cüneyt GÜZELİŞ
From a system theory perspective p53 network dynamics is interesting since it can exhibit three dynamical modes of p53 namely low-level equilibrium oscillation and high-level equilibrium. Each of these modes are associated with different cell fate outcomes: cell survival cell cycle arrest and apoptosis.The literature reveals that a high level (apoptosis) is seen only after ending the oscillation phase so called two-phase dynamics which provides thedecision of apoptosis depending on the oscillation duration. This paper proposes that a negative feedback can keep time by counting the pulses ofoscillation to take the decision of apoptosis or cell survival. P53DINP1 which is the mediator of this feedback is added as a variable to a 2-D oscillatormodel of the p53 network. The resulting canonical 3-D model successfully replicates the two-phase dynamics. That is it possesses temporary oscillatorybehavior in which first oscillations (first phase) and then high level state (second phase) are observed. By introducing a new variable to the core oscillatorin the p53 network this study demonstrates that p53 network can be considered a modular structure which consists of an oscillator and other variablesthat control this oscillator to contribute to cell fate determination.
Citation - WoS: 3
Citation - Scopus: 3
A COMPARATIVE STUDY ON THE EXERGOECONOMIC ANALYSIS OF TEXTILE DRYERS USING SPECO METHOD
(EGE UNIV, 2012) Ahmet Cay; Isik Tarakcioglu; Arif Hepbasli; Hepbaşlı, Arif; Çay, Ahmet; Tarakçıoğlu, Işık
This study reveals the exergoeconomic analysis of stenters by using Specific Exergy Costing (SPECO) method. The cost balances and auxiliary thermoeconomic relations were developed for direct gas heated (DGHS) and hot oil heated (HOHS) stenters by the application of the control volume models. The exergy cost of the evaporation of water was selected to be the main parameter. It was shown that the falling-rate period of drying led to the highest exergy costs while exergy costs varied between 0.19 US$/GJ and 0.59 US$/GJ depending on the drying periods. Increasing the exhaust air humidity ratio and the residual moisture content of the fabric outlet decreased the exergy costs linearly.
A comparative study on the exergoeconomic analysis of textile dryers using speco method
(2012) ARİF HEPBAŞLI; Ahmet Çay; Işık TARAKÇIOĞLU
Bu çalışmada ramözlerin eksergoekonomik analizi Özgül Ekserji Maliyeti (SPECO) yönteminin kullanılmasıyla açıklanmaktadır. Direkt doğal gaz ısıtmalı (DGHS) ve kızgın yağ ısıtmalı (HOHS) ramözler için maliyet denklikleri ve yardımcı termoekonomik bağıntılar geliştirilmiştir. Suyun buharlaştırılması için gerekli ekserji maliyeti temel parametre olarak seçilmiştir. Ekserji maliyetleri kurutma periyotlarına bağlı olarak 0.19 US$/GJ ile 0.59 US$/GJ arasında değişmektedir. Kurutmanın azalan hız periyodunun en yüksek ekserji maliyetine neden olduğu gösterilmiştir. Atık hava nemi ve kumaş çıkış neminin artırılması ile ekserji maliyetleri doğrusal olarak azalmaktadır.
A Comprehensive Evaluation of Yacht Charter Service Concept: Influence of Voyager-to-Voyager Interaction on Service Satisfaction
(2021-09-30) Neslihan Paker; Osman Gök
The study attempts to evaluate yacht charter service attributes considering the service quality customer satisfaction and loyalty three-leg framework. Besides visited destinations the service concept is enlarged with social servicescape dimensions of interaction quality and customer similarity for a holistic approach. A self-administered questionnaire was provided to 359 customers and the relationships in the research model were tested via structural equation modeling. The results showed that satisfaction depends on the interaction quality which is strongly related to the similarity between other customers as well as the quality of the service elements and the attractiveness of the visited destination. This study presents a pioneering research attempt focusing on the influence of customer-to-customer interaction and customer similarity on yacht charter services. Findings of the study provide a theoretical contribution highlighting the importance of customer-to-customer interaction for service appraisals of customers. Theoretical and practical implications for interaction-dominant services are discussed.
A Comprehensive Overview of Foreign Language Teachers' Professional Development: Self-directed and Institutional Professional Development Activities of English Teachers in Turkey
(Turkish Education Association, 2024-07-30) Çaǧri Özköse-Biyik; Oner Uslu; Bıyık, Çağrı Özköse; Uslu, Öner
When the literature on the professional development of English as a foreign language (EFL) teachers is examined professional development predominantly encompasses institutional activities. This study critically examines conventional definitions and practices related to the professional development of EFL teachers arguing that in line with the demands of the era teachers' professional development should also include self-directed individual activities. However for professional development activities to contribute to the ultimate goal of student learning it is important for the organizational culture in which teachers are situated to be supportive of their professional development. To seek answers to research questions about how the institutional and self-directed activities carried out by EFL teachers in Türkiye and the organizational culture influence these activities an exploratory sequential strategy was employed in the research. First qualitative data were collected and then quantitative data were collected through a survey tool developed based on the qualitative data. Comprehensive individual interviews were conducted with a total of 28 teachers across Turkey and survey data were collected from 819 teachers. The findings are presented as self-directed (unstructured) professional development activities (e.g. use of search engines reading news websites watching videos/series etc.) and institutional (structured) professional development activities (participation in national and international conferences etc.). The necessity of foreign language teachers being involved in many individual activities through self-direction beyond their participation in activities planned by institutions for the professional development of a foreign language teacher is discussed. The study proposes a comprehensive perspective on the concept of professional development related to EFL teachers and offers recommendations for the field of foreign language teacher education. © 2024 Elsevier B.V. All rights reserved.
A Comprehensive Review of Feature Selection and Feature Selection Stability in Machine Learning
(2023-12-01) Mustafa Büyükkeçeci; mehmet okur
Feature selection is a dimension reduction technique used to select features that are relevant to machine learning tasks. Reducing the dataset size by eliminating redundant and irrelevant features plays a pivotal role in increasing the performance of machine learning algorithms speeding up the learning process and building simple models. The apparent need for feature selection has aroused considerable interest amongst researchers and has caused feature selection to find a wide range of application domains including text mining pattern recognition cybersecurity bioinformatics and big data. As a result over the years a substantial amount of literature has been published on feature selection and a wide variety of feature selection methods have been proposed. The quality of feature selection algorithms is measured not only by evaluating the quality of the models built using the features they select or by the clustering tendencies of the features they select but also by their stability. Therefore this study focused on feature selection and feature selection stability. In the pages that follow general concepts and methods of feature selection feature selection stability stability measures and reasons and solutions for instability are discussed.
A Demand for Narrative: Reading Sabahattin Ali's Novel Kuyucaklı Yusuf as a Quest for Identity
(SELCUK UNIV FAC LETTERS, 2024-06-30) Murat Baran Akkus
Sabahattin Ali's first novel Kuyucakl & imath, Yusuf published in 1937 is a historically significant text within Turkish literature, it is the first realistic novel about Anatolian life and is a critique of the social system. However the novel remained incomplete due to Ali's murder in 1948 amid a rising tide of authoritarianism and nationalism that he consistently critiqued. This study examines the novel's demand for narrative identity in the context of its creator's untimely death. The study reveals three obstacles: the silent language of victimhood the extreme experience of loneliness and the finality of the author's death all of which function as barriers to realizing personal narratives. This exploration is also an attempt at an act of sepulcher as defined by Paul Ricoeur which means mourning the author's death by revising the incompleteness of Yusuf's identity. Ali's novel is an example of an ethical mode of authoring that requires giving up authoritative control over real or fictional life stories. Acknowledging the existence of untold stories alongside the potential for new narratives attests to the power of storytelling through the vulnerability of a life story.
A Method Implementation in the Intermedia Agenda-Setting Theory Research: The Case of Hurriyet Online and Twitter
(ANKARA UNIV FAC COMMUNICATION, 2017-05-30) Gizem Melek; Melek, Gizem
Understanding the relationship between the mainstream media and social networks in a correct and healthy way has become increasingly important today. Therefore knowing and practicing the scientific methods that will comprehend and test this relationship in the best and the most sound way is a serious need as well. Therefore by borrowing a model from a previous research from the USA this article describes the method of a validity and reliability tested work designed to understand the relationship between Hurriyet Online and Twitter agendas. Thus the aim is to make the methods used across the world better understood in Turkey. The implementation of these methods will undoubtedly make a great contribution to the agenda-setting literature in Turkey and will strengthen the work done in this area.
A new model for minimizing the electric vehicle battery capacity in electric\rtravelling salesman problem with time windows
(Tubitak Scientific & Technological Research Council Turkey, 2021-09-23) Kazım Erdoğdu; KORHAN KARABULUT; Erdoğdu, Kazım; Karabulut, Korhan
The growing pollution in the environment and the negative shift in the global climate compel authorities\rto take action to protect the environment and human health. Transportation is one of the major contributors to this\renvironmental decay. The harmful gases released to the air by the vehicles using petroleum fuel increase each day. One\rof the solutions is to make a gradual transition to electric vehicles. A major part of manufacturing an electric vehicle\ris to produce an efficient electric motor and battery for it. Reducing the manufacturing and operating costs of these\rcomponents will result in reducing the overall costs of electric vehicles. In this study a new variant of the electric\rtravelling salesman problem with time windows (E-TSPTW) was proposed. The objective function of the problem is to\rminimize the required initial battery capacity of the electric vehicle. For this goal a new energy consumption model\rconsidering the load of the vehicle was proposed with three scenarios. The proposed model was solved with a hybrid\rsimulated annealing algorithm for all these scenarios. The performance of the proposed method was compared to the\rsolutions found by a mixed integer linear programming model. The experimental results on the benchmark instances\rshow that up to a 35% reduction in initial battery capacity hence reduction in its cost is possible.\r
Citation - WoS: 5
Citation - Scopus: 10
A new warehouse design problem and a proposed polynomial-time optimal order picking algorithm
(GAZI UNIV FAC ENGINEERING ARCHITECTURE, 2018-04-06) Omer Ozturkoglu; Deniz Hoser; Hoşer, Deniz; Öztürkoğlu, Ömer
In this study we propose a new design problem that relates to orientation of cross aisles in warehouses. In this problem the main orthogonal cross aisle which is very common to be seen in warehouses to facilitate travel between locations is planned to be designed as discrete manner such as tunnels along picking aisles. Hence the problem of locating these tunnels along picking aisles so as to increase efficiency of order picking operations which is one of the most costly and the most related operations with the order delivery time in warehouses is propounded. Additionally we develop a new dynamic programming based polynomial time algorithm to calculate optimal length of order picking tour in this new design problem. Hence this algorithm provides very quick solutions even for large pick list sizes. The computational performance of this algorithm is compared with Held-Karp branch and bound algorithm which is a well-known algorithm for travelling salesman problem. Last we solve an example problem and explain how the algorithm is implemented to generate optimal tour.
A novel square-root domain realization of first order all-pass filter
(Tubitak Scientific & Technological Research Council Turkey, 2010-01-01) Sinem Olmez; Ugur Cam
In this paper a new square-root domain first order all-pass filter based on the MOSFET square law is presented The proposed filter is designed by using nonlinear mapping on the state variables of a state space description of the transfer function To the best knowledge of the authors the filter is the first square-root domain first order all-pass structure designed by using state space synthesis method in the literature The center frequency of the all-pass filter is not only attainable at megahertz frequencies but also tunable by an external bias current The proposed filter operated 2 5 V supply voltage is constructed by current mirrors geometric mean circuits a linear transconductor circuit and a capacitor SPICE simulations are given to approve the theoretical analysis
Citation - WoS: 1
A Quantitative Study On The Female And Male Employees' Expectations From Management When Coping With Stress
(ESKISEHIR OSMANGAZI UNIV FAC EDUCATION, 2014) Vesile Ayca Yamuc; Duygu Turker; Turker, Duygu; Özmen, Duygu Türker; Yamuç, Vesile Ayça
Stress which can be constructive in a certain degree becomes a problem that threatens the physiological and psychological health of individuals depending on the increasing competitiveness in the organizations. Although the literature provides a significant knowledge on the antecedents and consequences of organizational stress there is no sufficient information about what employees expect from their management when coping with stress. In order to fill this void this study first reviews the organizational strategies in the literature and then the employees' expectations from their management during this process were analyzed on a sample of 42 whitecollar female and male workers in a manufacturing firm in Izmir Ataturk Organize Sanayi Bolgesi (IAOSB) with following a semi-structured interview methodology. The results of study reveal that employees expect strategies regarding with their job identification reducing the level of conflict implementation of a fair payment policy etc.
A review of substrate integrated waveguide (SIW) filter architecture and filter design technologies, Yüzey tümleşik dalga kılavuzu (YTD) filtre mimarisi incelemesi ve filtre tasarım teknolojileri
(Gazi Universitesi, 2023-11-30) Kemal Güvenli; Sibel Yeni̇Kaya; Mustafa Seçmen
In this review article transmission line technologies are compared in terms of loss dimension production cost ease of integration and design complexity. The basic design stages of the Substrate Integrated Waveguide (SIW) filter which stands out with its advantages among transmission lines are given. Current studies using different SIW filter technologies have been examined in the literature. The quality factors of the examined SIW filters were calculated and a comparison was made between the applied techniques. In addition the methods applied in the literature to eliminate the harmonic and high mode effects that adversely affect the SIW filter performance are examined and the results are evaluated. © 2023 Elsevier B.V. All rights reserved.
A Spatial Reflection of Social Transformation: Taksim Municipal Gazino 1939
(ISTANBUL UNIV RESEARCH INST TURKOLOGY DEPT ART HISTORY, 2024-01-31) Begum Sena Onal Ozmalatyalilar; Meltem O. Gurel; Gurel, Meltem O.; Önal, Begüm Sena; Ozmalatyalilar, Begum Sena Onal; Gürel, Havva Meltem; Önal Özmalatyalilar, Begüm Sena
Taksim Municipal Gazino which hosted its visitors inside the Inonu Promenade between 1939 and 1967 was one of the leading examples of gazinos (an entertainment venue) built with the support of the state in the early republican era in Turkey. Designed by the municipality architect Ruknettin Guney within the scope of French city planner Henri Prost's Istanbul Master Plan the edifice was a quintessential example of modern architecture that epitomized the state's Westernization ideology. This article examines the gazino practice as a spatial reflection of social transformation by presenting a historical and spatial reading of the Taksim Municipal Gazino. The study analyzes the gazino structure as a power mechanism that produces secular identities by focusing on the dialectic between the spaces in the building and the experiences of its patrons. The analysis of architectural drawings photographs and literary works associated with the building on the one hand reveals how the architect operating as a cultural leader utilized architectural creation to present the Western lifestyle to society. On the other hand it indicates that Taksim Municipal Gazino served as a platform for individuals to display their modernity. Moreover the study propounds that the building contributed to the modernization process of the newly established nation-state and it has served as a spatial tool that notably strengthened the position of female regulars in the public sphere.
A Symmetrical-Asymmetrical Fault Characteristics Analysis within Cogeneration Power Plant in Izmir Turkey: An Experimental Assessment
(Gazi Universitesi, 2022-06-01) Hacer Sekerci Öztura; Sezai Polat
The analysis of the short circuit should be understood very well in order to make correct designs in the power systems such as the safety of the personnel and the equipment the selection of the safety relays the circuit breaker selection and the selection of the appropriate conductor section. In this study the parameters about the short circuit and the techniques of calculating the faults in system and the necessary theoretical knowledge for the short circuit fault to be understood better have been given. The effect on the distributed generation and the grid which is caused by the possible short circuit faults have been simulated by being modeled in PSS/Sincal and by using the real grid parameters with cogeneration power plant in Izmir Turkey. The real short circuit fault results measured from the power plant and the grid and the results obtained from the software program have been compared and it has been determined that there is not a significant difference between them. Thus it has been emphasized that it is correct to simulate before investing in a power system in for the purpose of restrain the faults during the designing and working before the application. It allows the designer to design new power plant as good as plan expansion of existing power plants with higher degree of precision. Considering the prices of protection equipment which has a large part in system design this way would allow designer to reduce the cost of the protective equipment and remaining stability. © 2023 Elsevier B.V. All rights reserved.
African studies in Turkey, Türkiye’de Afrika çalışmaları
(Forsnet bilgi@uidergisi.com.tr, 2016-08-24) Elem Eyrice Tepeciklioğlu
This article aims at providing an analysis of African studies as a recently emerging field of study in Turkish academia. For many years African issues had low priority in both policy and academic circles. The article argues that the recent scholarly interest in African issues is largely a product of the increasing political interest towards the continent. Although the existing literature mostly concentrates on Turkish-African relations and the study of particular African issues remain limited in number African studies in Turkey has made progress and is still evolving with an expanding and diversifying literature. © 2020 Elsevier B.V. All rights reserved.
Akademik Örgütlerde Dedikodu ve Söylentilere\rYönelik Alg›lar
(2021-04-29) Pınar ÖZŞARLAK; Umit Atabek; Gülseren Şendur Atabek
Literatürde akademik örgütlerde gayriresmi iletiflim türü olarak dedikodu\rve söylentiler konusu oldukça az çal›fl›lm›flt›r. Bu çal›flmada Türk üniversitelerinde akademisyenlerin dedikodu ve söylentiler hakk›ndaki alg›lar› ile\rdedikodu ve söylentilerin konular› ve çeflitli örgüt kültürü unsurlar›yla iliflkisi incelenmektedir. Bu amaçla web tabanl› bir soru ka¤›d› 356 iletiflim alan› akademisyenine uygulanm›flt›r. Bulgular akademik örgütlerde dedikodu\rve söylentilerin oldukça yayg›n oldu¤unu göstermektedir. Örgüt içi dedikodu ve söylentiler örgüt d›fl› dedikodu ve söylentilere göre daha yo¤un alg›-\rlanmakta ve yönetim ve özlük haklar› konular›ndaki dedikodu ve söylentiler\rön s›ralarda yer almaktad›r. Öte yandan akademisyenlerin dedikodu ve söylentiler hakk›ndaki kanaatleri genellikle olumsuzdur. Ancak akademik örgütlerde alg›lanan örgüt demokrasi düzeyi ve örgüt içi iletiflim artt›kça dedikodu ve söylentiler hakk›ndaki olumsuz kanaatlerin azald›¤› bulgulanm›flt›r. Akademik yöneticilerin kurumlar›ndaki demokratik kat›l›m› ve iç iletiflimi iyilefltirmedikçe dedikodu ve söylentilerle bafl edebilmelerinin zor olaca-\r¤› görülmektedir.

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