http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13740 Thu, 23 Apr 2026 03:07:12 GMT 2026-04-23T03:07:12Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13912 Assessment of architectural heritage characteristics and seismic behavior of Ziyaeddin Han Tomb Avcil, Fatih; Arkan, Enes Historical structures built by different civilizations that have survived to the present day have an important place within the scope of the protection of cultural heritage. Bitlis province, where many different civilizations lived and located in a strategic position on the Silk Road, contains many different types of historical structures. Within the scope of this study, the Ziyaeddin Han Tomb, which was built in masonry during the Şerefhans under the rule of the Ottoman period, has been taken into account. Besides, the architectural features of the tomb, detailed information are given about the current structural situation. As a consequence of on-site measurements, a numerical model of the historical tomb was formed using the finite element method (FEM) and structural analyzes were enforced. Structural analyzes were performed for the tomb, in which the macro modeling technique was applied, considering four different earthquake ground motion levels, 2%, 10%, 50%, and 68%, with a probability of exceedance in 50 years. Besides, the time history analysis was applied to take advantage of the acceleration record of an earthquake that occurred in the near region and the recent history of this tomb located in the city center of Bitlis. The structural performance of the tomb was tried to be determined by using the displacement and drift ratio obtained. Sat, 01 Jan 2022 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13912 2022-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13910 Investigation of thermal performance of newly multilayer wall/roof constructions for low-carbon buildings Argunhan, Zeki; Oktay, Hasan Increasing concerns about energy consumption for heating and cooling of buildings have made it necessary to improve the thermal performance of building materials. However, in addition to using materials with high insulation characteristics, an accurate calculation of the capacities of the heating and cooling systems is also an important factor in ensuring high energy efficiency for low-carbon buildings. The devices will not be selected at capacities larger than the capacities that should be on this point and energy wastage will be prevented. To achieve this goal, in this study, investigations are carried out to produce new concrete types with high thermal insulating characteristics. Besides, many new concrete wall and roof samples were produced with different types of aggregates at different volume ratios and their thermophysical characteristics are tested in accordance with ASTM and EN standards. To estimate the thermal performance of produced samples, a periodic solution method, the Complex Finite Fourier Transform technique, is developed by using thermophysical characteristics data of those structures. The results showed that the daily heat gain values were calculated as 65.909 W/m2 for the EPC50 wall and 11.324 W/m2 for the PC40-EPC60 wall with 20 cm thicknesses. Sat, 01 Jan 2022 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13910 2022-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13908 Pozzolanic activity of pumice under different curing temperatures and durations TANYILDIZI, Muhammed Objective of the work: This study focused on the investigations of the pozzolanic activity of the pumice under different curing temperatures and durations. Materials and Method: Pumice powder, standard sand, and slaked lime were used as materials in this study. Within the scope of the study, one mixture design was used following TS 25. In total, 9 different curing regimes such as three different heat cures at 55˚C, 75˚C, and 90˚C and three different curing durations as 7, 14, and 28 days for each curing temperature. Some experimental analyses including compressive strength, flexural strength, and ultrasonic pulse velocity test were conducted to investigate the effect of the curing regimes on the pozzolanic activity of pumice. Results: The pozzolanic activity of pumice increased to a certain extent with increasing curing temperature and duration. The optimum curing regime obtained for the pozzolanic activity of pumice in this study was curing at 75 ˚C for 28 days, which the highest strength values were obtained with. Sat, 01 Jan 2022 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13908 2022-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13907 Performance of different membership functions in stress classification with fuzzy logic Bülbül, Mehmet Akif Stress has become an indispensable part of today's world. Stress can have a very serious negative impact on human health. Knowing the intensity of stress on people is important in order to cope with it. In this research, 4 different Fuzzy Logic (FL) structures were used to classify human stress through sleep. In the established structures, the human stress detection data set in sleep and through sleep obtained from Kaggle was used. In the FL structures created, blood oxygen level and respiratory rate were taken as input and stress classification was made accordingly. Their performance in the classification of sleep stress was evaluated by using different membership functions in 4 different structures. In order to make a fair comparison in the established structures, the FL parameter was determined the same, except for the membership functions. As a result of experimental studies, the F model established with the generalized bell showed more successful results than the models established with other membership functions. Sat, 01 Jan 2022 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13907 2022-01-01T00:00:00Z