WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/8653

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Citation - WoS: 2
Academic Mobbing in Turkey and Suggestions for Solutions: Content Analysis of Graduate Theses
(Tuba-turkish Acad Sciences, 2019) Erdemir, Burcu
The effects of globalization on various sectors around the world are reflected in academia through competition, diminishing job security and faculty collegiality, and changing managerial understanding which causes academics to feel pressured to maintain the balance between teaching and research. This transformation inevitably has made the concepts explained by Foucault as "the power exerciser" and "the subject of power" more apparent, as demonstrated by conflicts and mobbing cases. The aim of this study is to review all the master's theses and doctoral dissertations written in Turkey to pin down what has been done until now on mobbing and to form a reference point. Upon searching for certain key words on the website of Council of Higher Education Thesis Center in June 2017, 655 theses on mobbing in various sectors with diverse participant groups were detected. After examining these theses in terms of their participants, it was found out that 29 of them, written between 2005 and 2017, addressed the issue of mobbing among academics. Of these, 26 theses, written between 2006 and 2016, were included in the study. The findings of these theses indicate that while there is 4-100% mobbing in the state and the foundation universities, younger people, singles, and women are more vulnerable to mobbing regarding self-expression, social relations, and communication, and they prefer to remain silent in the face of this issue. Besides, there is a negative relationship between mobbing and seniority, title, organisational justice, trust, commitment, and job-satisfaction. The primary causes of mobbing in academia are nepotism, poor leadership, unhealthy organisational culture, solidarity, andlack of communication. This study is expected to contribute to the formation of a conceptual framework about academic mobbing for the future studies and to expediting the process of taking measures for the eradication of the problem.
Citation - Scopus: 1
Adaptive Decision Fusion Based Framework for Short-Term Wind Speed and Turbulence Intensity Forecasting: Case Study for North West of Turkey
(2017) Toreyin, Behcet Ugur; Dinçkal, Çiğdem; Küçükali, Serhat
:In this paper, an online learning framework called adaptive decision fusion (ADF) is employed for short-term wind speed and turbulence intensity forecasting by use of wind speed data for each season for the city of ˙Izmit, located in the northwest of Turkey. Fixed-weight (FW) linear combination is derived and used for comparison with ADF. Wind speeds and turbulence intensities are predicted from the existing wind speed data and computed turbulence intensities, respectively, using the ADF and FW methods. Simulations are carried out for each season and the results are tested on mean absolute percentage error criterion. It is shown that the proposed model captured the system dynamic behavior and made accurate predictions based on the seasonal wind speed characteristics of the site. The procedure described here can be used to estimate the local velocity and turbulence intensity in a wind power plant during a storm.
Citation - WoS: 1
Addressing Earthquake Risk and Climate Crisis Together in Spatial Planning
(Kare Publ, 2021) Orhan, Ezgi; Peker, Ender
Cities' vulnerability to natural and man-made threats are ever increasing. Cities are under the threat of both natural disasters such as earthquakes, avalanches and landslides; and climate-driven challenges such as excessive precipitation, heatwaves and droughts. This calls for a need of handling natural and human systems together for the future of cities. However, climate and earthquake action plans which naturally present a direct link to spatial planning, are often produced separately in the Turkish planning practice. This study advocates that strategies for combating earthquake and climatic challenges should be harmonized together within the spatial planning system, and respectively, aims at presenting a holistic planning approach. For this purpose, the study first examines the ways in which disaster and climate issues are addressed in the current laws and national action plans. Then, in line with the 'Regulation on the Preparation of Spatial Plans', it examines the spatial planning scales with an aim of determining the potential areas in which disaster and climate issues could be planned together. Taking this as a point of departure, the paper presents a set of planning strategies responding to earthquake risk and climate crisis at regional, city, neighbourhood and building scales. It discusses synergies and conflicts among these strategies at different scales. This study targets to develop a holistic perspective for earthquake and climate change induced disasters, for the decision-makers and practitioners operating in spatial planning processes.
Citation - WoS: 4
Citation - Scopus: 5
An Algebraic Stability Test for Fractional Order Time Delay Systems
(Ramazan Yaman, 2020) Baleanu, Dumitru; Ozyetkin, Munevver Mine
In this study, an algebraic stability test procedure is presented for fractionalorder time delay systems. This method is based on the principle of eliminatingtime delay. The stability test of fractional order systems cannot be examineddirectly using classical methods such as Routh-Hurwitz, because such systemsdo not have analytical solutions. When a system contains the square roots ofs, it is seen that there is a double value function of s. In this study, a stabilitytest procedure is applied to systems including ps and/or different fractionaldegrees such as s where 0 < α < 1, and αǫR. For this purpose, the integerorder equivalents of fractional order terms are first used and then the stabilitytest is applied to the system by eliminating time delay. Thanks to the proposedmethod , it is not necessary to use approximations instead of time delay termsuch as Pad´e. Thus, the stability test procedure does not require the solutionof higher order equations.
Citation - WoS: 2
Citation - Scopus: 2
Analysis of Heat Transfer Enhancement in Tubes With Capsule Dimpled Surfaces and Al2o3-Water Nanofluid
(Turkish Soc thermal Sciences Technology, 2022) Ibrahim, Mahmoud Awni A. Haj; Turkoglu, Hasmet; Yapici, Ekin Ozgirgin
This study aims to numerically investigate and evaluate the enhancement of heat transfer by new capsule dimples on tube surfaces for flow of water and Al2O3-water nanofluid with different concentrations, under uniform surface heat flux. The originality of this work lies in combining two passive heat transfer enhancement methods such as geometrical improvements and nanofluids together. Capsule dimples with different depths were considered. Al2O3- water nanofluid was modeled as a single-phase flow based on the mixture properties. The effects of dimple depth and nanoparticle concentrations on Nusselt number, friction factor and performance evaluation criteria (PEC) were studied. Numerical computations were performed using ANSYS Fluent commercial software for 2000-14000 Reynolds number range. It was found that when laminar, transient and fully developed turbulent flow cases are considered, increase in the dimple depth increases the Nusselt number and friction factor for both pure water and Al2O3-water nanofluids cases. Also, the friction factor increases as dimple depth increases. Results show that increase in PEC is more pronounced in the laminar region than in the transition region, it starts to decrease for turbulent flows. For nanofluid, PEC values are considerably higher than pure water cases. The variation of PEC for capsule dimpled tubes are dependent on flow regimes and dimple depths. Increasing the nano particle volume concentration and dimple depth in laminar flows increase the PEC significantly.
Citation - WoS: 2
Citation - Scopus: 3
Analysis of Mixed-Order Caputo Fractional System With Nonlocal Integral Boundary Condition
(Tubitak Scientific & Technological Research Council Turkey, 2018) Khodabakhshi, Neda; Baleanu, Dumitru; Akman Yildiz, Tugba
This paper deals with a mixed-order Caputo fractional system with nonlocal integral boundary conditions. This study can be considered as an extension of previous studies, since the orders of the equations lie on different intervals. We discuss the existence and uniqueness of the solution using fixed point methods. We enrich the study with an example.
Citation - WoS: 18
Analytic Hierarchy Process (Ahp) as an Assessment Approach for Architectural Design: Case Study of Architectural Design Studio
(Konya Technical Univ, Fac Architecture & design, 2018) Harputlugil, Timucin
Architectural design is complex and can be defined as an effective decision-making activity based on problem solving. This complexity is not based on content and volume of problems, but also heterogeneity and uncertainty of information provided for assessment, subjective approaches, and a large number of the criterion for assessment. The aim of this research paper is to contribute to the researches for assessment of architectural design by providing a novel approach based on Analytic Hierarchy Process (AHP) - a Multi Criteria Decision Making (MCDM) method. The approach supports an effective comparative analysis among the alternative projects based on determined criterion. The methodology is implemented with a case study in one of the design studios of Department of Architecture of Cankaya University on final design projects of a group of students with observation, research and assessment. The data used in the assessment is collected through interviews and surveys which is analysed by the help of a software. Based on the outcomes of the AHP-based approach, it has been seen that this approach can provide numerical results that are comparable, measurable, gradable, consistent and can be reported separately for each assessor. However, it has also been found that the AHP-based method is suitable for evaluating only a limited number of projects. With the research, and by setting thresholds levels for evaluation, it has become clear that successful and unsuccessful projects can be separated for achievement and competence. Consequently, it has been observed that the approach has considerable potentials to be further developed to evaluate architectural projects comparatively, especially for architectural students' projects, and other architectural projects such as architectural design competitions.
Architectural Design - Structural System Conformity Problems Encountered in the Design and Application Processes of Stick Aluminium Curtain Wall Systems in Turkey
(Gazi Univ, Fac Engineering Architecture, 2022) Ozmen, Cengiz; Saban, Muge
Stick aluminium curtain wall (SACW) systems are common curtain wall systems in Turkey. These sytems offer many advantages including architectural variation, modular design, ease of production and assembly. Beside their architectural properties SACW systems create significant load effects on structural systems. These load effects include lateral loads such as seismic and wind loads as well as static vertical loads. This load transfer is not one way. The vertical and lateral displacements of building structures also act on curtain walls. Healthy load transfer between the SACW and the building depends on architectural decisions during the design and construction process. Due to their wide use SACW systems are prone to architectural mistakes. These mistakes often represent themselves at latter stages of the construction and require solutions which will affect the architectural characteristics and structural behavior of buildings. This study focuses on SACW design and construction processes to find the effects of architectural decisions on curtain wall behavior. Case studies that include architectural design mistakes are selected to classify and study the reasons and the solutions of these mistakes. The importance of cooperation between all the stakeholders including the architects and engineers is emphasized for the prevention of these mistakes.
Citation - WoS: 12
Citation - Scopus: 19
Artificial Intelligence Applications in Earthquake Resistant Architectural Design: Determination of Irregular Structural Systems With Deep Learning and Imageai Method
(Gazi Univ, Fac Engineering Architecture, 2020) Bingol, Kaan; Akan, Asli Er; Ormecioglu, Hilal Tugba; Er, Arzu
Although the architectural design process is carried out with the collaboration of experts who are experienced in many different areas from the main preferences to the detailing stage, the major decisions such as plan organization, mass design etc. are taken by the architect. Computer Aided Design (CAD) programs are generally effective after the major decisions of the design are taken. For this reason, it is common for the main decisions, taken during the design process, to be changed during the analysis of the structural system. In order to prevent this, in the early stages of architectural design, earthquake system awareness and structural system design should be included as an design input; as, the failure of the structural system which did not considered well in the architectural design phase leads to unexpected revisions in the implementation project phase and thus leads to serious losses in both time and cost. The aim of this study is to create an Irregularity Control Assistant (IC Assitant) that can provide architects general information about the appropriateness of structural system decisions to earthquake regulations in the early stages of design process by using the deep learning and image processing methods. In this way, correct decisions will be made in the early stages of the design and unexpected revisions that may occur during the implementation project phase will be prevented.
Citation - WoS: 2
Citation - Scopus: 6
Barış Eğitimi: Evrimleşmiş bir Şiddetsizlik Bilinci için Eğitim
(Center Foreign Policy & Peace Research, 2016) Yemenici, Alev
Bu makale beyin temelli ön bir barış eğitimi modeli sunmayı amaçlamaktadır. Günümüzdeki barış eğitimi modellerinin vurguladığı insan hakları eğitimi, çevre eğitimi ve çatışma çözümü eğitimi konularının yanısıra, bu model şiddetin nörobiyolojik nedenleri ve erken önlenmesi meselelerinin ele alınabileceği yeni bir seviye -hücresel seviye- öne sürmektedir. Özellikle, bu model, şiddetin nörobiyolojik sebepleri ve önlenmesi ile erken travmanın doğum öncesi, doğum sırasında ve sonrasında gelişmekte olan beyin üzerindeki etkisi hakkındaki bilgileri yayılmasını savunmaktadır. Sevgi ve şiddete ilişkin kimyasallara dair temel ve beynin esas yapısı bu erken dönemlerde oluşmaktadır. Diğer bir deyişle bu model, çocuklar, ergenler ve yetişkinlerin eğitimi yoluyla şiddetin önlenebileceği hücresel bir boyut olduğunu ortaya koymaktadır.
Citation - WoS: 50
Citation - Scopus: 69
Cep Telefonu Yardımıyla Dil Öğrenme: İngilizce Telaffuz Öğrenimi Parmaklarınızın Ucunda
(Ani Yayincilik, 2009) Cagiltay, Kursat; Saran, Murat; Seferoğlu, Gölge
Problem Durumu: Yabancı dil edinimi alan yazınında telaffuz ile ilgili yapılan araştırmalar göreceli olarak az sayıdadır ve dil ediniminin diğer boyutlarıyla karşılaştırıldığında bu konu ihmal edilmektedir. Benzer şekilde, sınıf ortamlarında da diğer dil bileşenleri ve becerileri ile karşılaştırıldığında başarılı bir iletişim için daha arka planda olduğuna inanıldığı için telaffuz öğretimine daha az ilgi gösterilmektedir. Bununla birlikte son zamanlarda telaffuz araştırmalarına olan ilginin artmakta olduğu da gözlenmektedir. Yabancı dil öğretimi ile ilgili alan yazında sınıf içi aktivitelerin etkili dil öğrenimi için, özellikle de kelime kazanımı için yeterli olmadığı, sınıf dışında da alıştırma ve uygulama çalışmaları yapılması gerektiği vurgulanmaktadır. Bu telaffuz öğrenimi için de geçerlidir. Sınıf içinde yapılan öğretim tek başına öğrencilerin konuşma yeteneğini çok az geliştirebilmektedir. Cep telefonlarının sahip olduğu ulaşılabilirlik, kişiselleştirilebilirlik ve taşınabilirlik gibi kendine özgü nitelikler, sınıf dışında yapılması gereken alıştırma ve uygulama çalışmalarının gerçekleştirilmesinde büyük bir potansiyele sahiptir ve birçok yarar sağlayabilir. Örneğin, öğrencilerin/kullanıcıların ders çalışmaya başlamalarını zorlaştıran motivasyon ile ilgili problemlerin ortadan kaldırılmasında cep telefonlarının çoklu ortam veya kısa mesaj özelliği kullanılabilir. Bu çalışmada, öğrencilere çoklu ortam mesajları ile alıştırma ve uygulama materyalleri gönderilerek çalışmaya teşvik edilmektedirler. Bu sayede öğrenciler ders notu ya da ders kitabını açmadan, herhangi bir web sitesine bağlanmadan ya da bilgisayar karşısına geçmeden, özel bir öğretim yazılımı kullanmadan yer ve zamandan bağımsız olarak konu tekrarı, alıştırma ve uygulama yapabilmektedirler. Böylece, birçok öğrenci için aşması zor olan ders çalışmaya başlama motivasyonu dış kaynaktan gelen bir itici uyaran aracılığıyla aşılmaktadır. Yukarıda bahsedilen potansiyelleri kullanarak dil öğreniminde cep telefonlarının kullanımını araştıran çok az sayıda çalışma vardır. Aynı zamanda öğrencilerin telaffuzlarının geliştirilmesinde cep telefonlarının kullanılması üzerine yapılan araştırmalar yok denecek kadar azdır. Bu çalışma bu eksikliği gidererek alan yazına anlamlı katkılar sağlamayı hedeflemektedir. Araştırmanın Amacı: Bu çalışmanın temel amacı cep telefonu teknolojisini kullanarak eğitim ve öğretim süreçlerinin etkin ve verimli hale getirilmesine katkıda bulunmaktadır. Bu çalışma ile İngilizce eğitiminde, cep telefonlarının kullanımı ile ilgili potansiyelleri ortaya çıkarmak ve özellikle cep telefonlarının telaffuz öğrenimine olan etkilerinin araştırması hedeflenmektedir. Araştırmanın Yöntemi: Bu araştırmada nitel veriler, nicel verilerle elde edilen bulguları desteklemede kullanılmıştır. Toplanan nitel ve nicel veriler hibrit yöntemler kullanılarak analiz edilmiştir. Nicel veriler ANOVA analizine tabi tutulmuş; nitel verilen analizinde ise örüntü analizi işe koşulmuştur. Araştırmanın nicel kısmında ön-test/son-test yarı-deneysel tasarım deseni kullanılmıştır. Nitel kısmında ise araştırma sonunda öğrencilerle yarı-yapılandırılmış görüşmeler yapılmış ve açık uçlu soruların yer aldığı değerlendirme anketi uygulanmıştır. Çalışmanın katılımcıları Ankara’da bulunan bir üniversitemizin İngilizce hazırlık okulundaki öğrencilerdir. Cep telefonlarının etkinliğini araştırmak için aynı içeriğin cep telefonu yoluyla, web sayfası üzerinden ve çalışma notları dağıtılması ile işlenmesinin kelimelerin doğru telaffuzlarının öğrenilmesinde etkililiği karşılaştırılmıştır. Araştırmanın Bulguları: Nicel verilerin analiz sonuçları cep telefonu kullanımının telaffuz öğreniminde olumlu etkileri olduğunu göstermiştir. Bu çalışmada kullanılan üç farklı yöntem ile telaffuz öğrenimleri desteklenen cep telefonu, web sayfası ve çalışma notları gruplarının sontest ile ön-test arasındaki farklarının ortalamaları diğer bir ifadeyle telaffuz kazanımları sırasıyla şu şekildedir: 11.94, 6.81 ve 6.81. Bu sonuçlara göre cep telefonu grubundaki öğrencilerin telaffuz testi ile ölçülen telaffuz kazanımları diğer gruplara göre daha yüksektir. Varyans analizi (one-way ANOVA) testi analiz sonuçları da cep telefonu ve kontrol gruplarının telaffuz kazanımları arasındaki farkın istasistiksel olarak anlamlı olduğunu göstermektedir (F (2, 21) = 5.000, p = .017). Bu anlamlı farkın hangi gruplar arasında olduğunu anlamak için Tukey HSD testi kullanılarak Post hoc karşılaştırmalar yapılmış ve bu test sonucunda cep telefonu grubu öğrencilerinin telaffuz kazanımlarının diğer iki gruptaki öğrencilerin kazanımlarından anlamlı olarak farklı olduğu (p=.032) ortaya çıkmıştır. Diğer taraftan web sayfası ve çalışma notu gruplarındaki öğrencilerin birebir aynı sayıda kelimenin telaffuzlarını öğrendikleri ortaya çıkmıştır (p=1.000). Özet olarak, bu sonuçlar cep telefonu üzerinden öğrencilere gönderilen ek materyallerin telaffuz kazanımı için daha etkili olduğunu göstermektedir. Görüşmelerde ve açık uçlu anket sorularına verilen cevaplar bu sonucu desteklemektedir. Bütün katılımcılar kullanılan cep telefonu uygulaması hakkında olumlu geri bildirimler vermişlerdir. Örneğin bir öğrenci bu uygulamanın faydaları ile ilgili görüşlerinin istendiği soruya şu şekilde cevap vermiştir: “Sesli boyut kelimelerin telaffuzunu düzgün öğrenmemizi sağlıyor. Görsel efektlerle desteklendiği için daha kalıcı olabiliyor” Benzer bir cevap olarak başka bir öğrenci de“Telaffuzları kolay bir şekilde öğrenebildim. MMS şeklinde yollanması sayesinde görsel ve işitsel olarak gördüğümüz kelimelerin telaffuzları daha hafızada kalıcı oldu.” ifadelerini kullanmıştır. Araştırmanın Sonuçları ve Önerileri: Cep telefonları genç nüfus için teknolojik aygıtlar arasında en popüler olanıdır ve çoğu kişinin yaşamında önemli bir yer tutmaktadır. Bu çalışmada temel hedeflerden bir tanesi genç nüfus tarafından cep telefonlarına gösterilen büyük ilgiden faydalanarak, ülkemizde bu teknolojinin eğitimde kullanımının önünü açmaktır. Bu
Changes and Problems of Conservation in Ankara-Ulus Historical City Center: Koyunpazari Slope and Atpazari Square
(Konya Technical Univ, Fac Architecture & design, 2021) Karakus, Filiz; Urak, Z. Gediz
Purpose In this study, the settlement located in Koyunpazari Slope and Hisar (Atpazari) Square, which has an important position in the Atpazari-Koyunpazari-Samanpazari area, which is the oldest part of the Ankara-Ulus Historical City Center, was examined in a way to include Cengelhan and Cukurhan. With this study, it is aimed to determine the changes and conservation problems in the field and to give direction to the changes planned for the future in the area. Design/Methodology/Approach Analysis and evaluation studies conducted in 1998 have been repeated in the mentioned area. Research and surveys have been conducted on the number of buildings in the area, the number of floors, the physical conditions of the buildings, the number of sub-units, types of activities, ownership status, frequency of purchasing goods, types of transportation, spatial competence, infrastructure competencies and future expectations of the working population. Findings As a result of these studies, the changes and problems occurred in the period from 1998 to 2020 have been determined. It has been observed that there are serious changes in the area due to cultural tourism, as in all over the world and in our country. The infrastructural deficiencies are the main problems identified in the area. Furthermore, it has been observed that the traffic problem has not been solved completely and also some buildings need repair. Research Limitations/Implications The fact that the field of study could not be expanded due to the application of the survey questions in the field of study in 1998 constitutes the limitations of this study. Social/Practical Implications With this study, it is aimed to draw attention to the conservation of the historical environment in Koyunpazari Street and Atpazari Square, which is an important point of the Ulus Historical City Center, and to create a social awareness about the preservation of the area in question. Originality/Value This study is significant as it discusses the conservation problems in one of the oldest areas of Ankara and aims to give direction to future changes in the field by formulating proposals for the solution of these problems.
Citation - WoS: 1
Citation - Scopus: 2
Classification of Low Probability of Intercept Radar Waveforms Using Gabor Wavelets
(Gazi Univ, Fac Engineering Architecture, 2021) Ergezer, Halit
Low Probability of Intercept (LPI Radar) is a class of radar with specific technical characteristics that make it very difficult to intercept with electronic support systems and radar warning receivers. Because of their properties as low power, variable frequency, wide bandwidth, LPI radar waveforms are difficult to intercept by ESM systems. In recent years, studies on the classification of waveforms used by these types of radar have been accelerated. In this study, Time-Frequency Images (TFI) has been obtained from the LPI radars waveforms by using Choi-Williams Distribution method. From these images, feature vectors have been generated using Gabor Wavelet transform. In contrast to many methods in the literature, waveform classification has been performed by directly comparing the feature vectors obtained without using any machine learning method. With the method we propose, classification accuracies were obtained at intervals of 2 dB between -20 dB and 10 dB and performed at reasonable classification accuracy rates up to -8 dB SNR value. Better results than the best reported in the literature were obtained for some signal types. The results obtained for all waveform types are given in comparison with the results of the existing methods in the literature.
Citation - WoS: 16
Citation - Scopus: 20
Common Fixed Point Theorems in Cone Banach Spaces
(Hacettepe Univ, Fac Sci, 2011) Abdeljawad, Thabet; Tas, Kenan; Karapınar, Erdal
Recently, E. Karapınar (Fixed Point Theorems in Cone Banach Spaces, Fixed Point Theory Applications, Article ID 609281, 9 pages, 2009) presented some fixed point theorems for self-mappings satisfying certain contraction principles on a cone Banach space. Here we will give some generalizations of this theorem.
A Comparative Research on Space of Women in Prayer Place Interiors of Celestial Religions: Cases From Istanbul
(Gazi Univ, 2020) Disli, Gulsen; Ozcan, Zuhal
Cross-cultural comparison has been used in architecture mostly to discuss the components of culture, knowledge, and value systems, yet to date there is not a specific comparative study on gendered architecture in prayer places of celestial religions, namely Judaism, Christianity, and Islam. Hence, this study aims to reveal how attendance of women in prayer places with different national, historic, religious, and cultural characteristics shaped architectural space organization and to assess potential similarities and differences of women's section in prayer spaces of celestial religions by examining literature survey, archival and historic research, including field observations. In addition to general observations in building scale, some exemplary historic synagogues, churches, and mosques in Istanbul still in use have been chosen as case studies, and their plan typologies, as well as types and locations of women's galleries/sections have been discussed. Cross-cultural comparison parameters were; development of women's section in prayer places as a structured architectural space and basic architectural terminologies used to define women's section. The major conclusion of the study is that originally women had right to worship in prayer spaces without any physical separation in all three religions, yet in time the place of women had a more defined/divided/structured character especially in Islam and Judaism. The study also indicates that while at present day, gendered architecture is still the predominant approach in Islam and in Orthodox Judaism; mix congregation in a single-unsegregated space for both sexes is more common in contemporary society of Christianity.
Citation - WoS: 2
Citation - Scopus: 3
Compatibility Assessment of Exterior Finish Coats for Insulated Walls
(2013) Düzgüneş, Arda; Tavukçuoğlu, Ayşe; Demirci, Şahinde; Örs, Kerime
New approaches are emerging in contemporary wall constructionas a result of improved understanding of building materials andtheir behaviour. Not so long ago, the accepted practice was to createimpermeable exterior walls by using moisture-proof and vapour-prooflayers in their sectional compositions. However, any failure, such as tinycracks in any one of these impermeable layers, causes accumulation ofentrapped moisture which could not escape by evaporation from the wallsurface (Hughes, 1986; Massari and Massari, 1993; Richardson, 2001). Thisresults in a decrease in the lifetime of building materials, visible defects onwall surfaces, such as discoloration, cracking, scaling and flaking on finishcoats, and unhealthy interiors (Bochen et al., 2005). The concept of the"breathing wall", therefore, gained importance in the last few decades andexternal wall compositions, allowing the passage of water vapour back andforth through it, were started to be constructed.Along with this, energy efficient buildings and improvement ofconstruction technology in this regard became a current issue incontemporary buildings. In addition to installing more efficient fuelburningequipment, the use of both thermal insulation layers andlightweight porous masonry blocks and/or panels for its walls proper,should be incorporated within the compositions of the building envelope.However, due to their high water absorption characteristics, light-weightporous masonry needs to be protected from rainwater by means ofwatertight protective coatings and/or by water repellents (Andolsun et al.2006; Kuş, 2004). For these reasons, the exterior finishing systems consistingof under- and finish-coats, having low water permeability but high watervapour permeability properties are necessary.The matter which has not yet been foreseen, even overlooked, for multilayerconstructions is "compatibility with neighbouring materials". Thecompatibility of finishing/complementing layers with the porous masonry, in fact, has vital importance for contributing to the long-term durabilityand thermal performance of masonry wall structures. However, thebasic performance and compatibility properties of those layers, such aswater vapour permeability, water impermeability, thermal resistance,dilatation, modulus of elasticity characteristics, are as yet not well known.Comprehensive studies are, therefore, needed to derive this informationso that the performance expected of such systems in providing healthyinteriors can be improved.Materials are considered to be compatible with each other if theyhave similar characteristics in terms of some physical, mechanical andcompositional properties (Sasse and Snethlage, 1997; Fassina et al., 2002;Andolsun et al., 2005, 2006; Karoglou et al., 2007). The two importantparameters of compatibility are water vapour permeability and modulus ofelasticity (MoE):-o What is required of the finish coat is to permit water vapourtransmission while resisting droplet penetration from rain or surfacewash; in other words, being essentially watertight (Kuş, 2004;Harderup, 1996; Cerny, et al., 1996). It is also necessary to ensurecontinuity in this vapour transmission property throughout allthe layers making up the wall section in order to avoid interstitialcondensation.o The compatibility assessment of a layer with its neighbouring layers interms of MoE is still under discussion. The MoE is defined as the ratioof stress to strain and indicates the deformation ability of a materialunder external forces (Timoshenko, 1970). According to studiesdiscussing this subject, the MoE of coating layers should not exceedthat of the underlying masonry (Caner, 2003; Fabbri and Grossi, 2000;Kovler and Frostig, 1998; Sasse and Sneathlage, 1997). This means that,any compatible layer should be expected to have MoE not higher thanthat of the base material which is in contact so as to prevent mechanicaldamage in any of the weaker intermediate layer(s). If not so done,failures-especially in the form of tiny cracks-are liable to develop onthe fine coat and/or on sub-layers, which is often followed by flakingand scaling.Here, a number of proprietary exterior finish coats produced in Turkeywere examined in order to determine their compatibility for insulatedmasonry walls with an emphasis on their water vapour permeability andmodulus of elasticity characteristics (Örs, 2006) (1). It was expected toreveal not only their individual material properties, but also to developawareness in architects, builders and manufacturers about the significanceof compatibility in attaining an integrated building envelope.
Citation - WoS: 6
The Complementary Nabla Bennett-Leindler Type Inequalities
(Ankara Univ, Fac Sci, 2022) Kayar, Zeynep; Kaymakcalan, Billur
We aim to find the complements of the Bennett-Leindler type inequalities in nabla time scale calculus by changing the exponent from 0 < zeta < 1 to zeta > 1. Different from the literature, the directions of the new inequalities, where zeta > 1, are the same as that of the previous nabla Bennett-Leindler type inequalities obtained for 0 < zeta < 1. By these settings, we not only complement existing nabla Bennett-Leindler type inequalities but also generalize them by involving more exponents. The dual results for the delta approach and the special cases for the discrete and continuous ones are obtained as well. Some of our results are novel even in the special cases.
Citation - WoS: 27
Citation - Scopus: 26
Completion of Cone Metric Spaces
(Hacettepe Univ, Fac Sci, 2010) Abdeljawad, Thabet
In this paper a completion theorem for cone metric spaces and a com- pletion theorem for cone normed spaces are proved. The completion spaces are defined by means of an equivalence relation obtained by convergence via the scalar norm of the Banach space E.
Contextual, Formal and Correlational Examination of Article Titles Published in International Indexed Journals in the Field of Educational Sciences
(Turkish Education Assoc, 2025) Goktas, Yuksel; İskender, Mülkiye Ezgi; Gürbüz, Nihal Elif; Cagiltay, Nergiz Ercil
Bir makalenin yayımlanması ve atıf alması açısından doğru başlık yazımı önemli bir değişkendir. Bu bağlamda bu araştırmada eğitim bilimleri alanında yayımlanan uluslararası indeksli makalelerin başlıkları içerik ve biçim açısından incelenmiştir. Doküman analizi, Web of Science veri tabanında yer alan 800 makale ve başlığın araştırmacılar tarafından literatüre dayalı olarak belirlenen kriterlere göre incelenmesiyle gerçekleştirilmiştir. İçerik-başlık uyumu konusunda elde edilen verilere SPSS 27.0 programından faydalanılarak istatistiksel analizler yapılmıştır. Bulgular, makalelerin cümle yapılarının yayımlandıkları dergilerin menşei ülkelerine göre farklılaştığını göstermiştir. Ayrıca, etki faktörü yüksek olan dergilerin başlıklarının metodolojik eğilimlerini daha net verdiği tespit edilmiştir. Etki faktörünün, potansiyel başlık standartlarına ulaşma ve kelime sayısı ile doğrusal ve orta düzeyde ilişkili olduğu bulunmuştur. Dergilerin Q değerlerine göre yapılan analizde, potansiyel içerik standartlarının Q1 dergilerin lehine anlamlı bir şekilde farklılaştığı görülmüştür. Dergiler için yapılan fark analizine göre başlık potansiyel standartları açısından dört dergi arasında istatistiksel olarak anlamlı farklılık bulunmuştur. Ortalamalara göre Review of Educational Research (Q1), Eğitim ve Bilim (Q4), Educational Researcher (Q1) ve Pedagogy (Q4) şeklinde bir sıralama ortaya çıkmıştır. Elde edilen sonuçlar kapsamında araştırmacılara bilimsel çalışmalar için başlık oluşturmada yol gösterecek bazı önerilerde bulunulmuştur.
Coset Algebras of the Maxwell-Einstein Supergravities
(Tubitak Scientific & Technological Research Council Turkey, 2006) Yılmaz, Nejat Tevfik
The general structure of the scalar cosets of the Maxwell-Einstein supergravities is given. Following an introduction of the non-linear coset formalism of the supergravity theories a comparison of the coset algebras of the Maxwell-Einstein supergravities in various dimensions is discussed.

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