TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7149
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Article Ensemble Machine Learning Algorithms for Thermal Comfort Prediction in HVAC Systems of Smart Buildings(Golden Light Publishing, 2025) Erdem, Merve Kuru; Gokalp, Osman; Calis, GulbenPredicting the thermal comfort of building occupants is of paramount importance in the operation of smart buildings, providing a data-driven approach to control Heating, Ventilation, and Air Conditioning (HVAC) systems for managing occupant thermal comfort and energy use, which aligns with modern sustainability and efficiency goals. Recently, ensemble machine learning (ML)-based thermal comfort prediction models have been proposed to provide more accurate estimation of thermal comfort; however, these efforts often lack a systematic and comprehensive evaluation across a wide range of ML models within a single study. To address this gap, this study presents a systematic comparative analysis of four ensemble ML frameworks (bagging, boosting, stacking, and voting) with six basic ML algorithms (Logistic Regression, K-Nearest Neighbors, Support Vector Machine, Decision Tree, Multilayer Perceptron, and Multinomial Na & iuml;ve Bayes) and six advanced ensemble ML algorithms (Random Forest, Rotation Forest, Extra Trees, Gradient Boosting Classifier, Histogram Gradient Boosting Classifier, and Extreme Gradient Boosting). The analysis is conducted using the widely recognized ASHRAE Global Thermal Comfort Database II, providing both 3-point and 7-point Thermal Sensation Vote (TSV) predictions. Accuracy, precision, recall and F1 metrics are used for evaluation and 10-fold cross validation is applied for further comparison. The results demonstrate the Histogram Gradient Boosting (HGB) algorithm achieved the highest F1 score (0.638) for 7-point TSV prediction whereas the Random Forest (RF) algorithm provided the highest F1 score (0.549) for 7-point TSV prediction. In practice, these findings suggest that integrating RF and HGB models into Building Management Systems or IoT-based HVAC platforms can support real-time adaptive control, helping practitioners to reduce energy use while maintaining occupant comfort.Article A Cross-Domain Systematic Review on Guest Speakers in Higher Education: Reconsidering the Role of "outsiders" in Architecture Education(Yildiz Technical Univ, Fac Architecture, 2024) Kasali, Altug; Akış, Tonguç; Abdel-aziz, DaniaGuest speaker events, as a form of instructional strategy in higher education settings, has long been recognized as a valid pedagogical method, whereas the factors that either promote or hinder the efficacy of this strategy in architecture education has not been extensively investigated. Accordingly, this paper presents a cross-domain literature review on the topic. The findings of the review have led to a discussion on guest speakers in design studios as an effective manifestation of inquiry-based learning (IBL). By searching 8 databases using the PICO framework, a systematic literature review was conducted to an in-depth examination of 35 articles across 25 domains in higher education, followed by a thematic analysis considering Braun and Clarke’s approach. The interpretive analysis yielded six themes: (1) bridging academia and practice, (2) speaker selection, (3) event planning, (4) content and format, (5) interaction mode, and (6) students’ preferences. While incorporating guest speakers can enhance student engagement, critical thinking, and networking, successful implementation hinges on addressing several factors such as the role of instructors’ guidance and tailoring topics and guest speakers’ selection with students' levels. Students' engagement with guest speakers in exploring content, issues, real-world perspectives and questions aligns with experiential learning and IBL principles. The study underscores the need for additional research in architecture education to understand students’ and instructors’ perceptions, concerning the role of guest speakers particularly on issues like contributions to learning, influence on design approaches and the implications for developing collaborative pedagogical practices.Article Citation - Scopus: 1İzmir'in bir dağ köyü: Yamanlar ve Yamanlar Yörükleri üzerine etnotarihsel bir inceleme(Rector CIU Cyprus int Univ, 2023) Ustuk, OzanThis study examines the history, language, social, and economic transformation of the Yuruks living in the Yamanlar Village located in the Karsiyaka district, where there is relatively little information in the literature despite its proximity to the Izmir city center. Information collected from the Ottoman Era cemetery adjoining the village reveals that the Yamanlar Yuruks have lived here for at least 400 years. Mount Yamanlar, where the village is located, is of great importance because of its ancient history, as it witnessed the founding of Izmir (Smyrna). The social and economic lifestyle in the village has transformed as the city expanded toward residential areas atop Mount Yamanlar. The loss of traditional livelihood practices challenged the villagers and severely influenced their customs, which might be considered valuable pieces of cultural heritage. In this study, we conducted fieldwork, during which various data collection methods and techniques were employed to describe daily life in the village. Within the scope of this study, semi-structured and unstructured interviews were conducted with the local people, and an oral historical study was carried out. With this method, we aimed to present an ethnohistorical description of the Yamanlar Village by trying to establish a balance between the analysis of both written documents and oral data to make sense of the social and economic change it has undergone and to contribute to the literature on Izmir Yuruks.Article Characteristic Architectural Elements of Traditional Barbaros Houses With a Single-Living Space and Their Relationship With Daily Life(Istanbul University Press, 2023) Saribekiroǧlu, Ş.; Kul, F.N.Barbaros is a rural settlement in Urla, Izmir, Turkey. This study aims to understand the architectural elements of Barbaros houses with a single-living space, their spatial organization, relation with daily life, and the local terminology for them. Moreover, it is aimed to reveal possible similarities and dissimilarities between architectural elements of other singleliving space rural houses in different settlements in close geography. The site survey data was collected in 2016, 2017, and 2020. Fourteen houses were examined, all of which still preserve their original spatial characteristics and architectural elements. The plans and architectural elements of each of the 14 buildings were documented in sketches and photographs. The architectural elements of each house and their characteristics, including form, material, and location in space, were analyzed. The Barbaros case was compared with other rural settlements in Çeşme, Karaburun and Urla. Oral interviews were conducted with 13 people to reveal the relationship between architectural elements and daily life. © 2023 The Author(s).Article Citation - WoS: 2A General Evaluation on Double Skin Facades(Yildiz Technical Univ, Fac Architecture, 2014) Inan, Tugba; Basaran, TahsinThis study examines the literature of double-skin facade systems over the last decade, and, with the help of tables and graphics, investigates their advantages and disadvantages. Moreover, a detailed comparison is made between double skin faade systems. The results of the study show that the greatest advantage (95%) of double skin facade systems is their provision of natural ventilation. Other advantages are highlighted according to their percentage as follows: An increase in interaction between user and environment because of the high proportion of transparency, support of heat and sound insulation, reduction in heat transmission and solar heat gain coefficient, an increase in thermal comfort, allowance of solar control elements between the two facade spaces, and protection of these elements from external environment conditions. The most commonly accepted disadvantage (72%) is overheating in the air space of the two facades. Other disadvantages are highlighted according to their percentage as follows: Problems related to a decrease in the amount of daylight entering the building, high investment costs, additional maintenance and repair costs, fire, and acoustic problems. In our country, architectural design decisions related to overheating must be taken so as to provide a positive contribution to energy performance and the applicability of these systems.Article Citation - WoS: 4Impact of Window-To Surface Area for Different Window Glass Types and Wall Orientations on Building Energy Performance: a Case Study for a School Building Located in Izmir, Turkey(Yıldız Teknik Üniversitesi, 2011) Yildiz, Yusuf; Ozbalta, Trkan Goksal; Arsan, Zeynep DurmusThe opaque and transparent surfaces of buildings have an important role in the total percentage of energy loss or gain. Heat loss or gain from windows are dependent on the window-to-wall area ratio, the window glass type, and the type of window frame used. In the concept of energy efficient design, heat loss or gain from windows should be analyzed in detail in the early stages of building design by considering local climatic conditions. This study investigates a school building located in Izmir in Turkey, a city with a hot and humid climate. Various glass types with different glazing characteristics and number of layers, located in different parts of the buildings and with different window-to-wall ratios are analyzed and compared using building the energy analysis program "EnergyPlus". Results indicate that window-to-wall area ratios, wall orientation and glass types are important factors in the building's total energy consumption. When the window-to-wall area ratio is increased from 10% to 60%, the winter heating load of the building decreases in maximum amount on the south side of the building and reduces in minimum amount on the east side of the building. When summer cooling load is investigated the highest increase in energy consumption is found on the south side of the building. On the eastern and western sides of the building the effect of increased energy consumption value remains low. When the total energy consumption (cooling + heating) is considered, it is calculated that the east and west sides have the biggest total effect and the northern wall has the smallest total effect. When low emissivity glass is used instead of double layer glass, in terms of energy consumption the building side order of effect remains the same, although actual values differ. It is therefore clear that using energy analysis programs to analyse different factors within the energy consumption of buildings will be beneficial in creating energy efficient solutions. This can be carried out in the earlier stages of the architectural design of the buildings or at the renovation stages of existing buildings.Article Citation - WoS: 5Rüzgar Enerji Sistemleri için Hava Yoğunluğunun Hesaplanması(Gazi Üniversitesi, 2018) Bingöl, FerhatRüzgar tarlaları son yıllarda dünyada ve Türkiye’de deniz seviyesindeki alanların yanı sıra yüksek rüzgar hızı kapasitesine sahip dağlık bölgelerde de kurulmaya başlamıştır. Ancak, dikkat edilmesi gereken en önemli nokta bu konumlarda hava yoğunluğunun azaldığı ve bunun da rüzgar türbinlerinden üretim gücüne doğrudan etkilediğidir. Küçük görünen farklar eğer fizibilite aşamasında yanlış hesaplanırsa uzun yıllar üretim göz önüne alındığında önemli farklar yaratabilirler. Bu çalışmada Türkiye'de 126 ölçüm yapılmış nokta için temelde iki farklı yöntem kullanılarak yoğunluk hesabı yapılmış ve karşılaştırılmıştır. Genel itibariyle, sonuçlar yıllık ortalamalar dikkate alındığında iki metotta da birbirine yakın çıkmakta ama aylık ortalamalarda %2 seviyelerine ulaşan üretim tahmininde hatalara yol açacak farklılıklar göstermektedir.Article Citation - WoS: 7Investigation of Educational Buildings in Terms of Daylighting Performance(Yıldız Teknik Üniversitesi, 2011) Erlalelitepe, Ilknur; Aral, Duygu; Kazanasmaz, TugceEducational buildings have the priority among other building types in daylight performance studies. There are several reasons for this. Classrooms which are used during the whole day should have sufficient and homogeneously distributed daylight. In insufficient daylight conditions, the use of electrical lighting increases energy consumption. Users' visual comfort should also be assured, and design incorporating natural light requires the analysis of sun protection devices in order to avoid glare and excessive heat. Also, atriums and skylights can be included in the building design with the aim of distributing light equally and in a relatively balanced manner throughout the building. However, lighting schemes are often proposed by architects and professionals who tend to make use of different design tools, and it would be pertinent to investigate whether these tools perform as desired. This study analyses daylight design principles and design elements in educational buildings. It outlines the method which has been used to analyse the daylight performance of buildings. A university building was selected for the field study. Measurements were taken in sample spaces to determine daylight performance. Utilising comparison between standard values and measured values, findings are presented in the form of tables, drawings and figures.Article A Fuzzy Logic Model To Classify Design Efficiency of Nursing Unit Floors(Yıldız Teknik Üniversitesi, 2010) Kazanasmaz, Tugce; Tayfur, GokmenThis study was conducted to determine classifications for the planimetric design efficiency of certain public hospitals by developing a fuzzy logic algorithm. Utilizing primary areas and circulation areas from nursing unit floor plans, the study employed triangular membership functions for the fuzzy subsets. The input variables of primary areas per bed and circulation areas per bed were fuzzified in this model. The relationship between input variables and output variable of design efficiency were displayed as a result of fuzzy rules. To test existing nursing unit floors, efficiency output values were obtained and efficiency classes were constructed by this model in accordance with general norms, guidelines and previous studies. The classification of efficiency resulted from the comparison of hospitals.Article Citation - WoS: 2The Development of Western-Type Large-Scale Consumption Areas in Turkey and Legal and Structural Regulation Efforts in Urban Retail Environments(Yıldız Teknik Üniversitesi, 2009) Kompil, Mert; Celik, MuratThe retail sector has been experiencing a rapid and continuous change worldwide. There have also been profound changes in Turkey, especially after the 1980s. Both the retail sector and the urban retail environments have been altered radically. One of the most significant indicators of this change is the proliferation of western-type large-scale retail developments. Past experiences in developed countries have shown that the uncontrolled development of large-scale retail areas results in some undesired socioeconomic and physical outcomes, such as decline in the cultural and commercial activities of city centers, damage in existing retail workforce structure, and change in local retail hierarchy, nearby land uses, traffic loads and original architectural identity. Many countries have put into practice restrictive and regulatory policies to prevent these negative effects. As similar transformations have also been realized in Turkish retail environments, many institutions think that similar legal regulations must be implemented in Turkey as well. The present study investigates the ongoing retail change within the Turkish context, explores the legal and structural regulatory policies of the Organization for Economic Co-operation and Development (OECD) countries, and critically discusses the appropriate retail regulation policies for Turkey.