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Citation - Scopus: 1
Spatial Narratives in Mixed Reality: Immersive Gamified Heritage Experience at Yedikule Fortress
(Education and Research in Computer Aided Architectural Design in Europe, 2025) Gül L.F.; Özer D.G.; Yağmur-Kilimci E.S.; Coşkun E.; Moralioglu B.; Yücel V.; Türkaslan E.
A comparative study was conducted to assess the impact of simple game elements on user experience and awareness of the historical Yedikule Fortress. The objective of this study was to ascertain whether the incorporation of gamified virtual overlays, which were designed to remain historically authentic, contextually grounded, and aligned with the physical environment, had an impact on participants' recollection of the visited space. An iterative development process was employed, commencing with expert evaluations followed by an extensive user study. The developed interface and features of the HoloLens 2 device are detailed, and the results of the user study are presented. Our findings highlight that, in contrast with previous assertions in the literature, there is no statistically significant difference in the impact of game elements on users' experiences of spatial technologies. © 2025, Education and research in Computer Aided Architectural Design in Europe. All rights reserved.
Citation - Scopus: 1
Modifications on Seismic Damage Assessment System of TCIP Based on Reparability
(International Association for Earthquake Engineering, 2021) Ilki A.; Halici O.F.; Kupcu E.; Comert M.; Demir C.
Evaluating the damage state of buildings has always been one of the major challenges that both engineers and authorities face after catastrophic earthquakes in seismic regions. After such events, considering the number of buildings in need of inspection and the insufficient number of qualified inspectors, the availability of a thorough but rapidly applicable damage assessment method is vitally important. An assessment system serving this purpose was developed for the Turkish Catastrophe Insurance Pool (TCIP, known as DASK in Turkey) at the beginning of the new millennia to evaluate the damages in reinforced concrete (RC) and masonry structures. The assessment system assigns a damage state (related with a damage modifier for the capacity loss) to each vertical structural member (columns and shear walls) based on the observed residual damages, such as crack width, concrete crushing, cover spalling and buckling of reinforcement. Beam damages are also taken into account in a similar way. After that, the weighted damage percentage (WDP) is calculated by taking into account the damage state and the cross-sectional area of each vertical member and the number of heavily damaged horizontal members. Since its development, this assessment method has been used by TCIP to decide the indemnities (and somehow future) of damaged structures to be either ‘repaired’ (partial indemnity) or ‘demolished’ (full indemnity) after earthquakes that took place in Turkey. In recent years, the number of scientific studies in regard to the concept of reparability of damaged structures, which is a determining parameter in buildings’ future decisions after seismic events, is increased. Consequently, TCIP initiated a research project to adjust the damage assessment method with the conclusions of up-to-date state-of-the-art scientific research. This paper presents the followed methodology and brief results of different phases of the project. In order to propose modifications for the current method, firstly, an experimental database was established focusing on the performance of damaged structural members. The database was used to validate/revise the member damage modifier parameters. Secondly, in order to define a reparability limit in terms of the building WDP value, a literature survey investigating the fundamental mechanical characteristics (such as stiffness, strength and ductility) that can be used to define the seismic behavior of damaged, and damaged-and-repaired structural members was performed. These mechanical characteristics were then used in a series of nonlinear structural analyses on typical buildings representing the common typologies of buildings in Turkey. The analyses covered the undamaged, damaged and damaged-and-repaired cases in order to determine the damage state/level where the cost of the repair applications become unfeasible or the seismic performance of the repaired structure deviates considerably from that of its undamaged state. Finally, by comparing the seismic performances of undamaged, and damaged-and-repaired cases together with the repair costs, new threshold values were proposed for WDP for different damage levels (and indemnity decisions). © The 17th World Conference on Earthquake Engineering.
Citation - WoS: 1
Dealing With Data Scarcity in Spoken Question Answering
(Assoc Computational Linguistics-acl, 2024) Menevse, Merve Unlu; Manavi, Yusufcan; Arisoy, Ebru; Ozgur, Arzucan
This paper focuses on dealing with data scarcity in spoken question answering (QA) using automatic question-answer generation and a carefully selected fine-tuning strategy that leverages limited annotated data (paragraphs and question-answer pairs). Spoken QA is a challenging task due to using spoken documents, i.e., erroneous automatic speech recognition (ASR) transcriptions, and the scarcity of spoken QA data. We propose a framework for utilizing limited annotated data effectively to improve spoken QA performance. To deal with data scarcity, we train a question-answer generation model with annotated data and then produce large amounts of question-answer pairs from unannotated data (paragraphs). Our experiments demonstrate that incorporating limited annotated data and the automatically generated data through a carefully selected fine-tuning strategy leads to 5.5% relative F1 gain over the model trained only with annotated data. Moreover, the proposed framework is also effective in high ASR errors.
Türkiye’de Sosyal ve Çevresel Muhasebe Eğitimi: Üniversitelerin Müfredatına Yönelik Bir İnceleme
(2025) Öz, Merve
Bu çalışma, Türkiye'deki üniversitelerin işletme lisans programlarında sunulan muhasebe eğitiminin sosyal ve çevresel hesap verebilirlik çerçevesindeki yeterliliğini değerlendirmeyi ve ilgili konuların müfredata dahil edilmesinin gerekliliğini ortaya koymayı amaçlamaktadır. Çalışmada geleneksel muhasebe eğitiminin günümüz iş dünyasının ihtiyaçlarına cevap veremediği yönündeki eleştirilerden yola çıkılarak, devlet ve vakıf üniversitelerinin işletme bölümlerinin müfredatları doküman analizi yöntemiyle sistematik bir şekilde değerlendirilmiş ve sosyal ve çevresel sorumluluğun raporlamasını ele alan dersler incelenmiştir. Araştırma sonuçları, Türkiye'de işletme bölümlerinde sosyal ve çevresel sorumluluğun raporlanmasına yönelik ders sayısının oldukça az olduğunu göstermektedir. Derslerin tamamının seçmeli olarak verildiği tespit edilmiştir. Bu derslerin sınırlı olmasının nedenleri arasında akademisyenler ve öğrencilerin gösterdiği direnç, muhasebe derslerinin zor olarak algılanması ve bu konulara ilişkin eğitim materyallerindeki çeşitlilik eksikliği olabileceği ifade edilmiştir. Çalışma, bu konuların zorunlu derslere entegre edilmesinin, akademisyenlere yönelik mesleki gelişim olanaklarının artırılmasının ve öğrenci farkındalığını artıracak etkinliklerin yaygınlaştırılmasının gerekliliğini vurgulamaktadır. Muhasebe müfredatının, vergi odaklı ve kural temelli yaklaşımların yerine, hesap verebilirlik ve şeffaflığı temel alan modern bir yaklaşımla güncellenmesi gerektiğine dikkat çekilmektedir. Akademi, meslek kuruluşları ve sektör arasında iş birliği eğitim ve uygulama arasındaki boşlukları kapatmak için oldukça önemlidir. Bu yaklaşım hem finansal hem de finansal olmayan sosyal ve çevresel bilgilerin raporlanmasının önemine dair farkındalık oluşturmayı hedeflemektedir.
Γ-Type High-Entropy Disilicates (Y0.2er0.2tm0.2yb0.2x0.2)2si2o7 (X = Dy, Gd, Ho): Phase Stability, Thermal Behavior, and CMAS Corrosion Resistance
(Elsevier Ltd, 2026) Kavak S.; Yüksek A.N.; Gökçe H.; Lütfi Öveçoğlu M.; Ağaoğulları D.
Three quinary high entropy disilicate (HEDS) compositions namely, (Y0.2Er0.2Tm0.2Yb0.2Dy0.2)2Si2O7, (Y0.2Er0.2Tm0.2Yb0.2Gd0.2)2Si2O7 and (Y0.2Er0.2Tm0.2Yb0.2Ho0.2)2Si2O7 were synthesized via ball milling and sintering using commercially available oxides for environmental barrier coating (EBC) applications. XRD, SEM, and EDS analyses confirmed the formation of single-phase γ-type pyrosilicates with dense and homogenous elemental distribution. Moreover, it was found that the newly developed (5RE0.2)2Si2O7 high entropy disilicate materials exhibit low thermal conductivities, high temperature phase stability and similar coefficients of thermal expansion (CTE) with SiC. CMAS corrosion resistances of HEDS samples were investigated at 1300 °C for 2, 12, and 24 h. The findings highlight the potential of high entropy engineering to enhance the high-temperature corrosion resistance, high temperature phase stability and improved thermal properties making these materials promising candidates for advanced EBC systems for gas turbine applications. © 2026 Elsevier B.V.