Yazarlar
- Yurdakul, Muhammet(10)
- Cuce, Erdem(9)
- Ergün, Mustafa(8)
- Artar, Musa(7)
- Ates, Sevket(5)
- Cuce, Pinar Mert(5)
- Cakici, Ziya(4)
- Demirtaş, Betül(4)
- Murat, Yetis Sazi(4)
- Tayfur, Bilal(4)
- Tonyali, Zeliha(4)
- Aymelek, Abdullah(3)
- Can, Ömer(3)
- Kiral, Adnan(3)
- Türker, Temel(3)
- Türkmen, Mutlu(3)
- Yanik, Yusuf(3)
- Alacadağlı, Esmeray(2)
- Apak, Ömer Ceyhun(2)
- Ateş, Şevket(2)
- Azimkhani, Amin(2)
- Ergun, Mustafa(2)
- Guleryuz, Didem(2)
- Kara, Adnan(2)
- Ozden, Erdemalp(2)
- Saatchian, Vahid(2)
- Tapkın, Serkan(2)
- Tercan, Emre(2)
- Tozlu, Alperen(2)
- Uyar, Mehmet(2)
- Yarımkaya, Erkan(2)
- Yildirim, Ömer(2)
- Yilmaz, Fatih(2)
- Yıldız, Seçil Gül Meydan(2)
- Şengün, Hayriye(2)
- Şentürk, İdris(2)
- Abusoglu, Aysegul(1)
- Adanur, Suleyman(1)
- Ahiskali, Adem(1)
- Alacadağli, Esmeray(1)
Yayınlar
- MakaleAçık Erişim2026Türkiye'nin Demografik ve Sosyal Yapısının PCA ve K-Means Kümeleme Yöntemiyle Analizi
Sebetci, Özel; Ayberkin, Doruk
Bu çalışmanın amacı, Türkiye'nin benzersiz konumundan ve karmaşık toplumundan yararlanıp, Türkiye'deki illerin demografik ve sosyoekonomik yapısını kapsamlı bir şekilde analiz ederek illerdeki demografik ve sosyoekonomik eşitsizlikleri araştırmaktır. Amaca uygun olarak TÜİK (Türkiye İstatistik Kurumu) tarafından açık veri olarak sağlanan 2010-2022 yılları arasında 81 ilin verilerini içeren çok boyutlu bir veri seti, Keşif Amaçlı Veri Analizi (EDA), Temel Bileşen Analizi (PCA) ve K-Ortalamalar kümelemesi gibi ileri veri analizi teknikleri kullanılarak incelenmiştir. Çalışmada, iç göç, nüfus artışı, yabancı nüfus yoğunluğu ve boşanma oranları gibi temel sosyoekonomik göstergeler ele alınmıştır. Analiz sonuçları, şehirler arasında göç kalıpları, nüfus artış hızı ve sosyoekonomik özellikler açısından önemli farklılıklar olduğunu ortaya koymaktadır. PCA ve kümeleme analizi, şehirleri demografik ve sosyoekonomik profillerine göre gruplandırarak bu farklılıkları daha detaylı bir şekilde anlamayı sağlamıştır. Çalışma, Türkiye'nin nüfus dinamikleri ve sosyal dokusunun anlaşılması, etkili yerel ve ulusal politikaların geliştirilmesi ve sosyal uyumun güçlendirilmesi açısından önemli bilgiler sunmaktadır. Sonuçlara bakılarak bazı önlemlerin alınmasının gerekliliği ortaya konulmuştur. Demografik ve sosyoekonomik profillerin çok boyutlu yapısı dikkate alınarak kentsel planlama, eğitim, sağlık ve sosyal hizmetler gibi alanlara özel önem verilmelidir.Göç akışının yoğun olduğu bölgelerde, sosyal hizmetlerin güçlendirilmesine, ekonomik fırsatların artırılmasına ve entegrasyon politikalarının geliştirilmesine öncelik vermelidir.Nüfus artış hızının düşük veya negatif olduğu bölgelerde nüfus artışını teşvik edecek önlemler ve ekonomik kalkınmayı destekleyici stratejiler uygulanmalıdır.
AtıfOpenAlex2
İncele - MakaleAçık Erişim2026The Transformation of Local Independent Retail in City Centers and Its Effects on the City's Macroform: The Case of Ankara
Yıldız, Seçil Gül Meydan; Şengün, Hayriye; Kara, Adnan; Ozden, Erdemalp
The unplanned growth of city centers threatens the local fabric of cities, while local retail has become an important component of preserving city identity and sustainable consumption. This research aims to examine the effect of shopping motivations on customer satisfaction and to determine how factors such as customer proximity, relationships with local suppliers, and store atmosphere shape consumers' perception of Urban Attachment. Data obtained using systematic and stratified sampling methods in the districts of Altındağ, Çankaya, Etimesgut, Gölbaşı, Keçiören, Mamak, Pursaklar, and Sincan in Ankara were analyzed. Statistical analysis methods such as linear regression, logistic regression, ANOVA, and independent samples t-test were used in the study. Regression analyses show a positive and statistically significant relationship between shopping motivations and customer satisfaction. Furthermore, proximity to the customer and relationships with local suppliers were found to have a significant and positive effect on customer satisfaction. Shopping motivations, community connection, and store atmosphere factor scores showed significant differences across different visit frequency groups. This study uniquely highlights the critical role local retailers play in strengthening consumers' emotional connection to the city. The findings emphasize local businesses' importance in preserving city identity and creating a sustainable consumption ecosystem.
AtıfOpenAlex1İncele - MakaleAçık Erişim2026Kentli hakları bağlamında kentsel dönüşüm: samsun-canik kuzey yıldızı kentsel dönüşüm projesi örneği
Ersavaş Kavanoz, Suna; Küçükşen, Murat
Kentsel dönüşüme ilişkin kentli hakları temelli çalışmalar oldukça sınırlıdır. Bu iki önemli değişkeni bir arada ele alan bu çalışmada, kentsel dönüşüm uygulamalarının kentli hakları bağlamında incelenmesi amaçlanmıştır. Çalışma, kentli hakları ilke ve değerlerinin kentsel dönüşüme ilişkin politika yapım sürecinde daha bütünsel bir yaklaşım oluşturup oluşturamayacağı sorusu etrafında yapılandırılmıştır. Araştırma alanı, Samsun ili Canik ilçesinde yer alan ve Karadeniz Bölgesi’nin en büyük kentsel dönüşüm projesi olarak kabul edilen “Kuzey Yıldızı Kentsel Dönüşüm Projesi”dir. Araştırma yöntemi olarak nitel ve nicel verilerin bir araya getirildiği karma yöntem yaklaşımı kullanılmıştır. Veri toplama araçları arasında anket, yarı yapılandırılmış görüşmeler, gözlem ve arşiv belgesi inceleme teknikleri yer almaktadır. Toplanan veriler metne aktarılmış ve betimsel analizle birlikte frekans ve oransal dağılım kullanılarak yorumlanmıştır. Çalışmada kentsel dönüşümün on altı farklı kentli hakları değişkeni üzerinde hem olumlu hem de olumsuz etkileri olduğu bulunmuştur. Araştırma bulguları ışığında, kentsel dönüşümün sosyal boyutunun güçlendirilmesiyle daha bütüncül bir dönüşüm uygulamasının yaratılabileceği, bunun kentlilerin hakları açısından önemli etki ve katkılar sağlayabileceği sonucuna varılmıştır.
- MakaleAçık Erişim2026Scopus SJRQ3Deprem Sonrası Yeniden Yerleşim Çalışmalarında Küresel Eğilimler ve Mekânsal Yaklaşımlar: Bibliyometrik Bir Analiz
Degirmenci, Yavuz; Eraslan, Büşra
Bu çalışma, 2015-2025 döneminde deprem sonrası yeniden yerleşme literatüründeki küresel eğilimleri ve mekânsal yaklaşımları bibliyometrik yöntemle analiz etmeyi amaçlamaktadır. Web of Science veri tabanından elde edilen 890 makale, performans analizi ve bilimsel haritalama teknikleriyle incelenmiştir. Bulgular, literatürün 2021 yılından itibaren teknik sismolojik analizlerden sosyo-mekânsal dayanıklılık paradigmasına evrildiğini göstermektedir. Çin, yayın sayısı bakımından alanda öne çıkan ülke konumundadır.; Japonya ve Şili merkezli çalışmaların ise afet sonrası yeniden yerleşim, katılımcı planlama ve toplumsal uyum temaları bakımından işbirliği ağlarında görünür olduğu belirlenmiştir. 2023 sonrası yükselen algoritma trendi, yapay zekâ destekli yer seçim modellerinin önemini ortaya koymaktadır. Türkiye özelinde ise 2023 depremleri sonrası çalışmalar, mekânsal aidiyetin yerleşme başarısındaki kritik rolünü teyit etmektedir. Çalışma, sürdürülebilir iyileşme için teknik verimlilik ile toplumsal meşruiyetin entegre edildiği bütüncül modelleri önermektedir.
- MakaleAçık Erişim2026Torul ilçesinin idari yapısı ve nüfus dinamikleri üzerinden tarihsel-güncel bir analiz
Göktaş, Serdar
Torul, Karadeniz Bölgesi’nin iç kesimlerinde yer alan ve Gümüşhane iline bağlı, tarihî ve coğrafi açıdan önemli bir ilçedir. Tarihi İpek Yolu’nun önemli bir kesişme noktası ve güzergâhı olan Torul, bu geçmişten gelen kritik rolüne rağmen günümüzde coğrafyasının da yarattığı dezavantajlarla birlikte halkının beklentisi olan büyüme ve gelişme ivmesini bir türlü yakalayamamıştır. Şüphesiz bu ivmenin yakalanama-masının sebeplerinin tarihsel bir geçmişle birlikte ele alınması zorunluluğu bulunmaktadır. Coğrafi dezavantajı, bağlı olduğu sancak ve vilayet merkezlerinin uzaklığı, tarih boyunca yaşadığı idari değişiklikler, Torul tarihinin ve günümüzdeki durumunun belirleyicileri olmuşlardır. Bu makale, Torul ilçesinin idari taksimatının tarihsel seyrini ve güncel yapısını detaylıca incelerken, demografik hareketlerini ve bunların ilçenin sosyo-ekonomik durumu üzerindeki etkilerini analiz etmeyi amaçlamaktadır. Çalışma, özellikle Erken Cumhuriyet dönemindeki idari parçalanmışlıktan, nüfusun zirveye ulaştığı 1960-1980 dönemine ve sonrasındaki yoğun dış göç ile idari küçülmenin bölge sosyo-ekonomik yapısı üzerindeki kalıcı etkilerine odaklanmaktadır. Veriler, arşiv belgeleri, dönemsel salnameler, Genel Nüfus Sayımları, bölgesel monografiler ve güncel TÜİK verileri ışığında karşılaştırmalı bir analiz sunmaktadır.
- MakaleAçık Erişim2026Scopus SJRQ1Structural condition assessment of the Bamsı Beyrek observation terrace in Bayburt, Türkiye, on autonomous updated FEMs
Ergün, Mustafa; Tayfur, Bilal; Güneş, Erdi
This study involves detailed numerical and experimental investigations to assess the current structural condition of the Bamsı Beyrek steel observation terrace in Bayburt, Türkiye. The numerical dynamic characteristics of the structure were obtained by free vibration analysis conducted on the preliminary finite element model, while the experimental ones were determined through ambient vibration testing. The ultimate finite element models representing the actual state of the structure were developed through the model updating process based on the principle of minimizing the differences between numerical and experimental dynamic characteristics via the Teaching-Learning Based Optimization Algorithm. Load types and their characteristic values, potentially impacting the observation terrace during its service life, were identified according to national and international code standards. The internal forces obtained from the analysis conducted on the updated model under the influence of these loads were combined using various load combinations. The structure was then statically and dynamically checked based on the most critical responses calculated from these combinations. Structural responses are evaluated based on distributions in PMM ratios on the structure, PMM ratios of all elements according to the combination that causes the most adverse values, and maximum displacements. Consequently, considering all the findings obtained from the assessments conducted on the finite element model, which reflects the current state of the observation terrace under various loads, it has been concluded that the structure is statically and dynamically reliable and does not require any repair or strengthening procedures.
AtıfScopus1WoS1OpenAlex1
İncele - MakaleAçık Erişim2026Scopus SJRQ2Barriers to physical activity in individuals with autism spectrum disorders after the 2023 Kahramanmaraş Earthquakes in Türkiye
Yarımkaya, Erkan; Şenlik, Zeynel Abidin; Demir, Mehmet; Töman, Ufuk; Kul, Murat; Türkmen, Mutlu
The individual, environmental and systemic physical activity (PA) barriers experienced by individuals with autism spectrum disorder (ASD) in daily life may become more complex after a devastating disaster such as an earthquake. In order to effectively combat the high level of inactivity that may occur after an earthquake in individuals with ASD, PA barriers must be determined before the earthquake. However, no description is provided in the literature regarding the PA barriers experienced by individuals with ASD after the earthquake. The purpose of this phenomenological study is to examine parents’ experiences regarding PA barriers experienced by individuals with ASD after the 2023 Kahramanmaraş earthquakes in Türkiye. Fifteen parents of individuals aged 8 and 31 with ASD were interviewed. The interviews were analyzed using both inductive and deductive content analysis approach. Three overarching themes were found: (1) the effects of PA on individuals with ASD, (2) post-earthquake PA barriers, and (3) the consequences of lack of PA in individuals with ASD. The results revealed that parents were aware of the benefits of PA and directed their children with ASD to PA before the earthquake. However, after the earthquake, parents encountered PA barriers that they had to overcome, and this negatively affected the children with ASD.
AtıfScopus5WoS5OpenAlex5
İncele - MakaleAçık Erişim2026Scopus SJRQ1Modal parameter determination and structural assessment of historical minaret under earthquake and wind loads
Yanik, Yusuf; Demirtaş, Betül; Yurdakul, Muhammet; Aymelek, Abdullah; Türker, Temel
This study presents a comprehensive linear time history of a historical masonry minaret called the Grand Mosque Minaret in Bayburt, employing a finite element (FE) model subjected to five distinct real earthquake acceleration records. Ambient vibration tests were conducted within the framework of operational modal analysis (OMA), utilizing enhanced frequency domain decomposition technique to estimate the experimental modal parameters. The FE model, developed under the assumption of linear elastic material behavior, was updated through a vibration-based model updating technique to accurately represent the dynamic characteristics of the structure. Each seismic record was applied as a base excitation, and the corresponding time-dependent structural responses were computed for initial and updated FE models. The analysis yielded critical engineering parameters, including maximum displacement and minimum–maximum principal stress distributions. The results obtained from the FE analyses were evaluated comparatively. Also in this study, the wind loads of the minaret were determined using the TS 498 standard, and structural wind load analyses were performed on the initial and updated FE models. Drift ratio values of the minaret were calculated for earthquake records and wind loads, and the structural performance of the minaret was evaluated comparatively for both models. It has been found that the structural behavior of the minaret was significantly affected by earthquakes. The drift ratio values remained within the controlled damage limit for wind analyses, while earthquake analyses indicated that the minaret was mostly in the collapse limit. The results show that more effective conservation and restoration strategies for cultural heritage structures can be developed by using both FE and experimental methods.
- MakaleYalnız künye2026Scopus SJRQ1Resilience-oriented seismic retrofit of heritage masonry minarets using hybrid base isolation and supplemental damping
Ergun, Mustafa; Tonyali, Zeliha; Kiral, Adnan; Elias, Said
Historic masonry mosques represent a highly vulnerable class of cultural heritage structures whose seismic fragility stems from their complex geometries, heterogeneous material composition, and rigid load-transfer mechanisms. This study presents a resilience-oriented seismic performance improvement of the historic masonry minaret of the Bayburt Grand Mosque, a structure with limited lateral deformation capacity that challenges the applicability of conventional strengthening measures. To address this limitation, a hybrid retrofitting strategy is introduced, integrating lead rubber bearings (LRBs) with supplemental viscous dampers (VDs) at the foundation level. This combined system—implemented for the first time in a historic masonry minaret—aims to enhance energy dissipation and displacement control through a minimally invasive and architecturally compatible approach. Finite element analyses (FEA), coupled with MATLAB-supported optimization routines, were used to calibrate isolator stiffness and damper coefficients. Three configurations were evaluated: fixed-base, LRB-isolated, and hybrid LRB–VD systems. Nonlinear time-history analyses (NTHAs) using the 1992 Erzincan (Otlukbeli) earthquake record quantified displacements, stress–strain responses, and damage progression. Results show that while base isolation mitigates seismic demand, it remains insufficient under restricted deformation capacity. The proposed hybrid system reduces peak horizontal displacements from 22 cm to 12 cm, limits drift ratios below 0.17 %, and lowers maximum tensile stresses from 4.890 MPa to 0.490 MPa—well below the masonry tensile strength of 0.880 MPa. Two iterative analytical design methodologies are additionally introduced to derive effective isolator stiffness and viscous damping coefficients, enabling systematic integration into resilience-focused evaluation frameworks. Overall, the study advances reliability-based, conservation-compatible retrofitting practices for historic masonry minarets and supports sustainable strategies for seismic risk mitigation.
AtıfScopus8WoS7OpenAlex6İncele - MakaleAçık Erişim2026Scopus SJRQ1The effect of existing damage on the seismic performance of a historical masonry structure: a site-specific assessment
Tayfur, Bilal; Tunca, Osman; Artar, Musa; Çarbaş, Serdar
This study comprehensively evaluates the structural integrity and seismic performance of a historic masonry mosque, exhibiting significant settlement cracks, through an integrated approach combining field measurements and advanced numerical analyses. The Operational Modal Analysis (OMA) conducted to determine the dynamic characteristics of the structure. Field measurements revealed that the environmental vibrations originating from a nearby tram line causes significant amplitude incrase in one of the main columns. The dynamic characteristics of the structure obtained from field experiments are used to calibrate the numerical model via the Particle Swarm Optimization Algorithm. The calibrated numerical model, taking into account the existing cracks in the structure using contact elements, was subjected to nonlinear analysis in the time domain under 11 site-specific ground motion records selected in accordance with the procedures of the Turkish Building Seismic Code. This analysis examined the seismic performance and damage mechanisms of the structure. The findings revealed that while existing settlement cracks contribute to seismic energy dissipation through frictional sliding and gap opening mechanisms, they may also serve as potential failure initiation points under strong ground motions. This study’s integrated approach, combining dual-purpose OMA application and explicit crack modeling with contact elements, constitutes a novel methodological framework for the realistic seismic assessment of historic masonry structures with pre-existing damage.
AtıfScopus1WoS1OpenAlex2İncele - MakaleAçık Erişim2026Scopus SJRQ2Experiences of parents of individuals with intellectual disabilities after the 2023 Kahramanmaraş earthquakes in Türkiye: a phenomenological study
Yarımkaya, Erkan; Bakkaloğlu, Hatice
Individuals with intellectual disabilities and their parents, who encounter many barriers in daily life, may experience even more serious problems when faced with a devastating disaster such as an earthquake. For effective earthquake preparation, it is important to identify these problems before the earthquake. However, studies examining the earthquake experiences of individuals with intellectual disabilities and their parents are quite limited. In this context, the aim of the current study was to explore the experiences of parents of individuals with intellectual disabilities who were affected by the 2023 Kahramanmaraş earthquakes in Türkiye. This study used the phenomenological qualitative research design. In this study, there were 16 parents, who have children with intellectual disabilities and participated in face-to-face interviews. Interview data were analyzed thematically. Two overarching themes were found: (1) low level of earthquake preparedness, and (2) inaccessible needs. The findings revealed that the majority of parents of individuals with intellectual disabilities made few preparations for the earthquake, could not access many of their needs during and after the earthquake, and could not find a special unit for individuals with disabilities to explain their problems.
AtıfScopus8WoS11OpenAlex15İncele - MakaleAçık Erişim2026Scopus SJRQ1Seismic Performance Assessment of a Historical Masonry Mosque Minaret Under Pulse-like and Non-Pulse-like Near-Fault Ground Motions
Gürbüz, Ali; Demirtaş, Betül; Tonyali, Zeliha
Historical masonry minarets are highly vulnerable to seismic actions due to their slender geometry, limited tensile capacity, and material heterogeneity. However, their response to near-fault ground motions characterized by velocity pulses remains insufficiently explored. This study investigates the seismic response of the historical Tavanlı Mosque Minaret (1894, Trabzon, Türkiye) subjected to pulse-like (PL) and non-pulse-like (NPL) near-fault ground motions. A three-dimensional finite element model (FEM) was developed in ANSYS Workbench and systematically calibrated using empirical formulations to represent the current dynamic condition of the structure. Seismic performance was evaluated through linear dynamic analyses in terms of displacement demands, principal stress distribution, and drift-ratio-based performance levels. The results indicate that model calibration significantly modifies the dynamic characteristics, increasing the fundamental frequency from 0.734 Hz to 1.126 Hz and reducing displacement demands by approximately 35–76% across the considered records. Despite this improvement, PL ground motions consistently generate more critical deformation demands than NPL motions, frequently exceeding Collapse Prevention (CP) limits even when Peak Ground Acceleration (PGA) values are relatively low. A key finding is that seismic demand cannot be reliably predicted by peak intensity measures or pulse-period ratios ((Formula presented.)) alone; rather, velocity-related parameters and pulse coherence govern the structural response. These results demonstrate that integrating empirical model calibration with pulse-sensitive seismic analysis is essential for reliable seismic assessment and conservation planning of slender historical masonry structures located in near-fault regions. The study offers a systematic framework that integrates model calibration and pulse-sensitive seismic analysis for evaluating the drift-controlled response of slender historical masonry minarets in near-fault regions.
AtıfScopus5WoS4OpenAlex4İncele - MakaleYalnız künye2026Scopus SJRQ1Upcycling marble waste into construction materials and heavy metal adsorbents via hot-pressed geopolymerization technique
Öksüzer, Nurullah; Uslu, Emin; Gökçe, H. Süleyman
This study presents a sustainable approach to utilizing marble dust waste by producing bifunctional metakaolin-based geopolymers via a synchronized hot-pressing technique. In this study, the environmental footprint was minimized by designing mixtures in which marble waste constituted 50% of the total volume. Three stoichiometric series were investigated by varying the activator modulus (SiO2/Na2O = 3 and 4) and the Si/Al ratio (2 and 3) under two curing temperatures (150 and 300 °C) and three compaction stresses (5, 25, and 50 MPa). Thus, a high-volume industrial byproduct was transformed into a functional component. In this context, it investigated the transformation of industrial products into next-generation materials by using them to produce cementless composite geopolymers for civil engineering and to adsorb heavy metal (Cu2+). As a result of the research, an early compressive strength of 58 MPa was obtained through heat treatment and pressing applied at 300 °C and 50 MPa. This optimum strength was achieved in the SiO2/Na2O = 3, Si/Al = 3 series, whereas excess silica (SiO2/Na2O = 4) and excess aluminum (Si/Al = 2) limited the strength to 16.8 and 35.2 MPa, respectively. Microstructural analyses (SEM/EDS and FT-IR) revealed that marble dust was used as a filler material in the microstructure to produce an N-A-S-H-containing matrix. The produced materials were then ground after their service life and used to purify water containing heavy metals. More than 99.75% of Cu2+ was removed through ion exchange between copper ions used as heavy metals. The residual Cu2+ concentration fell below 0.25 mg/L from an initial concentration of 100 mg/L, and the released Na+-to-adsorbed Cu2+ molar ratio of approximately 1.8–2.3 confirmed an ion-exchange-dominated uptake mechanism. This structural and environmental impact demonstrates that marble waste, which is otherwise discarded as waste, is considered inert, offering an alternative model for the circular economy and environmental applications.
- MakaleYalnız künye2026Scopus SJRQ2Assessment of municipal water quality criteria in consideration of microbiological and physicochemical parameters using a fuzzy decision-making framework
Suiçmez, Özlem; Teke, Çağatay; Özdemir, Akın
Water is a significant element for the sustainability of life and is crucial for many aspects, such as agriculture, cities, ecosystems, industries, and people. This study focuses on municipal water quality assessments for urbanization activities and human health concerns when dealing with the sustainable city concept. For the first time, an integrated fuzzy decision-making framework is proposed to evaluate municipal water quality criteria with microbiological parameters, heavy metals, and other chemicals. For this aim, the eight main criteria and forty-four sub-criteria were specified to evaluate municipal water quality for a sustainable city. A case study was performed in Bayburt, Türkiye, to evaluate 130 water depots when dealing with a number of scenarios. Moreover, the Sustainable Development Goals (SDGs) 6.1 and 6.3 can be achieved through the study. Finally, this study presents how to develop safe and clean water management for the concept of a sustainable city.
- MakaleAçık Erişim2026Scopus SJRQ4Effect of Seismic Isolation on Earthquake Behavior of Mid-Rise Reinforced Concrete Building Systems
Delikkaya, Uğur; Karabulut, Pembe Merve; Ergün, Mustafa
When the latest updated Türkiye Earthquake Hazard Map and Active Fault Maps are examined, it is seen that a large part of Türkiye's surface area is at earthquake risk. With increasing urbanization, the majority of the population lives in cities built on active earthquake faults. The 7.8 and 7.5 magnitude earthquakes centered in Kahramanmaraş, Pazarcık, and Elbistan occurred in Türkiye on February 6, 2023, and caused significant loss of life and major damage in 10 provinces. In the damage assessment studies conducted after the earthquakes, it was determined that the damage in structures constructed with tunnel formwork systems was less than the damage in other structural systems. The importance of seismic isolators in such a severe earthquake was once again revealed. Within the scope of this study, the earthquake performance of mid-rise buildings constructed with tunnel formwork systems and mid-rise buildings constructed with reinforced concrete carcass construction systems was compared with and without isolators for different soil classes. When the obtained results were examined, it was observed that the earthquake performance of the structures constructed with the tunnel formwork system was better than that of the structures constructed with the reinforced concrete frame structure system and that in cases where a seismic isolator was used, the isolator positively affected the forces acting on the structure and the structure displacements.
- MakaleAçık Erişim2025Yerel halkın algıladıkları faydaların ve doxey rahatsızlık indeksi algılarının sürdürülebilir turizm gelişimine destek üzerindeki etkisi
Apak, Ömer Ceyhun
Bu makale, yerel halkın algıladığı faydaların ve Doxey Rahatsızlık İndeksi'nin turizmin sürdürülebilir gelişimine olan etkilerini incelemeyi amaçlamıştır. Algılanan faydaların Doxey Rahatsızlık İndeksi'nin boyutları üzerindeki etkileri de araştırılmıştır. Trabzon'da yaşayan 421 kişiden veri toplanmış ve çalışma, nicel araştırma desenleri kapsamında tarama modeli ile gerçekleştirilmiştir. Değişkenler arasındaki etkiler yapısal eşitlik modellemesi kullanılarak analiz edilmiştir. Elde edilen sonuçlar yerel halkın algıladığı faydaların turizmin gelişimine destek, coşku ve ilgisizlik üzerinde pozitif etkilediğini, buna karşın kızgınlık ve düşmanlık üzerinde negatif etkilediğini ortaya koymaktadır. Doxey Rahatsızlık İndeksi, yerel halkın turizmle ilgili algılarını anlamak için önemli bir çerçeve sunmaktadır. Coşku ve ilgisizliğin turizmin sürdürülebilir gelişimine destek üzerinde anlamlı bir pozitif etkisi bulunurken, kızgınlık ve düşmanlığın ise negatif bir etkisi olduğu belirlenmiştir. Bu sonuçlar yerel halkın turizmle ilgili algılarının turizmin sürdürülebilir gelişimi açısından kritik bir rol oynadığını ve Doxey modelinin bu süreçte nasıl bir rolünün olduğunu ortaya koymaktadır. Yerel halkın fayda algılarının dikkate alınması, turizm politikalarının geliştirilmesinde önemli bir unsur olarak değerlendirilebilir.
- MakaleAçık Erişim2025Speculative House Price Bubble Dynamics and Bursting Mechanisms in Türkiye: A Threshold Regression Model Proposal
Kuzu, Mehmet
One of the most current social and socio-economic problems in Türkiye is the speculative bubbles that have formed in the housing markets due to the current economic and financial crisis, making it difficult for households to own a house. This study analyzes the dynamics and bursting mechanisms of speculative price bubbles in the Turkish housing market. The GSADF test was applied using monthly data for 2012-2024 to identify bubble periods in the housing market. In the determined bubble periods, robust regression analysis was performed to determine the main factors affecting these price formations. In addition, the Kalman filtering method was used to examine the dynamic coefficients of housing price bubbles that change over time. The findings show that falling interest rates trigger housing price bubbles in Türkiye in an inflationary process; the bursting of the bubbles is associated with increasing domestic and foreign risk premiums, interest rate expectations, and realized interest rate increases. In addition, it investigated how the current housing bubble can burst in a controlled manner through the threshold regression model. The study results reveal that maintaining the interest rate difference between Türkiye and the US within 10% to 17% is critical in preventing financial and economic instabilities regarding housing prices. In addition, it can be argued that the current inflation rate and risk premiums should be managed effectively to ensure stability in housing prices.
- MakaleAçık Erişim2025Aşırı Turizm Algısının Yaşam Kalitesine Etkisinde Turist-Yerli Halk Etkileşiminin Kalitesinin Aracı Rolü
Ünlü, Hami
Aşırı turizm, turizm faaliyetlerinin yol açtığı olumsuz etkilerden dolayı halkın turizme karşı hissettiği olumsuz duygular olarak ifade edilmektedir. Aşırı turizm algısının yerli halk üzerinde etkisini belirlemeye yönelik olarak birçok çalışma yapılmıştır. Aşırı turizm gerçekleştiği destinasyonlarda yerli halkın turizm faaliyetlerinden ilk başta ekonomik etkiden dolayı memnun olduğu fakat zamanla olumsuz etkilerin ortaya çıkmasıyla birlikte bu durum tam tersine döndüğü görülmüştür. Bu araştırma, aşırı turizm algısının yaşam kalitesi üzerindeki etkisinde turist-yerli halk etkileşiminin aracılık rolünü incelemeyi amaçlamaktadır. Araştırma, nicel araştırma yöntemlerinden olan ilişkisel tarama modeli üzerinden gerçekleştirilmiştir. Araştırma Trabzon’da yaşayan bireylerin katılımıyla gerçekleştirilmiştir. Araştırma verileri yerli halktan kolayda örnekleme yönteminden yararlanılarak toplanmış ve 402 veri ile analizler yapılmıştır. Araştırma hipotezlerinin test edilmesi amacıyla doğrudan etkileri belirlemek için yapısal eşitlik modellemesi uygulanmıştır. Turist-yerli halk etkileşimi kalitesinin aracılık rolünün belirlenmesi için PROCESS makrosunda Model 4 uygulanmıştır. Araştırma sonucunda turist-yerli halk etkileşiminin aşırı turizm algısı ve yaşam kalitesi arasındaki ilişkiye anlamlı bir şekilde aracılık ettiği belirlenmiştir.
- MakaleAçık Erişim2025Scopus SJRQ2Performance analysis of piezoelectric-based energy harvesting in reinforced concrete buildings under seismic and live loads
Ergün, Mustafa; Uyar, Mehmet; Malgaca, Levent
The demand for autonomous energy solutions in seismic regions is increasing for the uninterrupted operation of structural health monitoring systems. In this context, energy harvesting systems offer a solution for low-power devices, especially in earthquake zones where external energy sources may be interrupted. This study evaluates the energy harvesting capacity of a piezoelectric energy harvesting mechanism placed at specific locations in the columns of a reinforced concrete structure, considering both earthquake and live load conditions. A smart building model is developed by placing sensor modules with piezoelectric material on the columns of a three-story reinforced concrete building. The finite element model of the smart building, which is formed by integrating various technologies and sensors, is created in ANSYS, and specific locations on the columns are selected as sensor points. Dynamic analyses are performed under earthquake conditions by considering seismic records from the Imperial Valley, Erzincan, and Darfield earthquakes. Experimental results of a smart structure with patched piezoelectric material are used to verify the simulation results. The voltage, current, and power responses obtained from the sensor points are examined with the payload effect placed at the end point of the sensor module. When the power values collected from the sensor points are compared, it can be said that the maximum power obtained from the smart building under both earthquake and live load is 0.355 W, while the minimum power value reaches 0.168 W. The results show that the energy harvesting mechanism can provide external power to support electronic devices in regions where earthquake effects are frequent and high. Thus, this study presents an innovative contribution to smart building systems by investigating the energy harvesting potential under earthquake and live loads in a reinforced concrete structure equipped with piezoelectric sensors. The model, validated with numerical and experimental analyses, proposes a sustainable energy source for structural health monitoring systems in seismic regions.
AtıfScopus1WoS1OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ1Seismic resilience of existing RC dual-system buildings during the 2023 Kahramanmaraş earthquakes: a case study
Tonyali, Zeliha; Kiral, Adnan; Ergun, Mustafa; Garcia, Reyes
This study investigates the seismic resilience of an existing reinforced concrete (RC) dual-system during the 2023 Kahramanmaraş earthquakes. The shear wall-frame dual building was designed according to the Turkish guidelines (TEC 2007) and experienced negligible damage during the earthquakes, whereas all neighboring buildings collapsed. The case study building is modeled in SAP2000® adopting a lumped plasticity approach. The 3D building model was subsequently subjected to pushover and nonlinear time-history analyses (NTHAs) using real ground motions recorded during the first and strongest mainshock of the Kahramanmaraş earthquakes ((Formula presented.) = 7.7 Pazarcik earthquake). The results from the NTHAs indicate that the maximum inter-story drift (IDR) ratios on all floors of the case study building remained below the Immediate Occupancy performance level (IDR = 1.0%). Moreover, the dual-system building designed with TEC 2007 survived the earthquakes without damage, even when the design earthquake scenarios exceeded those considered in the new and more stringent TBEC 2018 (i.e. a 475 return period). The limited damage experienced by the RC dual-system building can be largely attributed to its high wall index (WI = 1.5% and 1.84%) and high average lateral stiffness index (H/T ≥45.3), which are above the minimum values (ρ = 0.6% and H/T ≥45) suggested in previous research. This study also highlights the critical importance of site-specific ground motion selection, particularly in the context of Hatay province, where the seismic demands exhibited significant variability and intensity. This study contributes to a better understanding of the resilience of RC shear wall-frame buildings in seismic zones.
AtıfScopus13WoS12OpenAlex16İncele
