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Interpretable Building Energy Performance Prediction Using Xgboost Quantile Regression
No full textThis study focuses on predicting the Building Energy Performance Ratio (BEPR) of 3,594 residential buildings in Istanbul using machine learning algorithms. The main objective is to identify the factors affecting BEPR, examine their influence, and analyze how these factors differ across buildings with low and high energy efficiency. To achieve this, seven machine learning models were evaluated: Multiple Linear Regression (MLR), Decision Tree (DT), K-Nearest Neighbors (KNN), Support Vector Regression (SVR), Artificial Neural Networks (ANN), Random Forest (RF), and Extreme Gradient Boosting (XGBoost). The results show that XGBoost yields the highest accuracy among all models. To improve the interpretability of XGBoost, the Shapley Additive Explanations (SHAP) method was employed, enabling the assessment of the impact of various features (such as wall U-value, window U-value, and building age) on BEPR. The analysis revealed that building thermal properties and age are critical factors in determining BEPR. Additionally, by applying the XGBoost Quantile Regression (XGBoost-QR) algorithm, the distribution of BEPR across different quantiles (low, medium, and high) was analyzed more effectively. This approach demonstrated that the features influencing BEPR vary between buildings with low and high energy efficiency. Specifically, in the lower quantiles, structural features such as wall and window insulation have a greater impact on BEPR, whereas in the higher quantiles, building age and roof insulation become more influential. This research contributes to a better understanding of the determinants of residential energy performance, introduces the integration of XGBoost-QR into energy performance analysis, and offers valuable insights for enhancing energy efficiency strategies
Validity and Reliability of the Turkish Version of the Fear of Cancer Scale
No full textKuday, Ahmet Dogan/0000-0001-8361-5526This study assessed the validity and reliability of the Turkish version of the Fear of Cancer Scale (FOCS) among 285 state university students from December 2022 to February 2023. The validity analysis included language, content, and structural assessments, with structural validity examined through exploratory and confirmatory factor analyses. Reliability was evaluated using item-total correlation, Cronbach's Alpha, and split-half analysis. Results confirmed that the Turkish version maintained the original factor structure, with a two-dimensional model explaining 52.73% of the variance. Factor loadings ranged from 0.455 to 0.757, and confirmatory factor analysis indicated acceptable model fit. The scale showed excellent internal consistency, with an overall Cronbach's Alpha of 0.920, and sub-dimension values of 0.870 for direct fear and 0.861 for indirect fear. These findings confirm the Turkish version of FOCS as a valid and reliable instrument for measuring cancer fear in non-oncological individuals
İç Ege Bölgesi Fındık Genotiplerinin Seleksiyon Yolu ile Islahı
No full textThis study was conducted to evaluate the morphological and quality characteristics of hazelnut genotypes grown in the Inner Aegean Region and to identify promising genotypes. Genotypes that could be suitable for mechanized cultivation were selected according to fruit weight and boll length. In the selected genotypes, shelled and inner fruit weight, seed length, yield, shell and inner size, navel width, shell thinness were determined and promising genotypes were identified according to the weighted grading method.The shelled hazelnut weight varied between 2.66 g and 3.07 g among the genotypes, the lowest value was measured in 20 BL 06 and 20 ÇE 08 genotypes, and the highest value was measured in 20 ÇAL 178 genotype. The inner nut weight varied between 1.33 g (20 ÇE 08) and 1.54 g (20 ÇAL 178). In terms of shell size, values were measured between 56.08 g (20 TA 05) and 60.24 g (20 ÇAL 51), and the inner size varied between 44.49 g (20 ÇE 08) and 46.21 g (20 ÇAL 178). In terms of shell thickness, the thinnest shell was found in genotype 20 ÇV 116 with 0.7 mm and the thickest shell was found in genotype 20 ÇAL 62 with 1 mm. The values of the length of the stems varied between 24.99 mm (20 BL 06) and 43.9 mm (20 ÇE 09), and the width of the core was measured between 3.58 mm (20 TA 05) and 5.46 mm (20 ÇAL 62). Yield values were in a range between 48,87% (20 ÇE 09) and 51,25% (20 ÇAL 51).20 20 ÇAL 178, 20 ÇAL 51, 20 ÇV 116, 20 ÇV 91, 20 ÇAL 12, 20 ÇE 09, 20 ÇAL 62, 20 BL 06 genotypes were selected as promising according to the weighted grading method. In our research findings, it was determined that genotypes with large, thin shells, high yield values, short pulp and suitable for mechanized agriculture grow in the region. It reveals that the region has high genetic diversity and this diversity should be protected. It is important to utilize these genotypes in future breeding studies and to bring them into hazelnut agriculture and fruit growing of the country.Bu araştırma, İç Ege Bölgesi'nde yetiştirilen fındık genotiplerinin morfolojik ve kalite özelliklerini değerlendirmek ve ümitvar genotipleri tespit etmek amacıyla yürütülmüştür. Meyve ağırlığı ve zuruf boyuna göre makineli tarıma uygun olabilecek genotipler seçilmiştir. Selekte edilen genotiplerde kabuklu ve iç meyve ağırlığı, zuruf boyu, randıman, kabuk ve iç iriliği, göbek eni, kabuk inceliği belirlenmiş ve tartılı derecelendirme metoduna göre ümitvar genotipler tespit edilmiştir.Genotipler arasında kabuklu fındık ağırlığı, 2,66 g ile 3,07 g arasında değişmiş, en düşük değer 20 BL 06 ve 20 ÇE 08 genotiplerinde, en yüksek değer ise 20 ÇAL 178 genotipinde ölçülmüştür. İç fındık ağırlığı 1,33 g (20 ÇE 08) ile 1,54 g (20 ÇAL 178) arasında değişiklik göstermiştir.Kabuk iriliği bakımından, değerler 56,08 g (20 TA 05) ile 60,24 g (20 ÇAL 51) arasında ölçülmüş, iç iriliği ise 44,49 g (20 ÇE 08) ile 46,21 g (20 ÇAL 178) arasında değişmiştir. Kabuk kalınlığı açısından, en ince kabuk 0,7 mm ile 20 ÇV 116 genotipinde, en kalın kabuk ise 1 mm ile 20 ÇAL 62 genotipinde tespit edilmiştir. Zuruf boyu değerleri, 24,99 mm (20 BL 06) ile 43,9 mm (20 ÇE 09) arasında değişmiş, göbek eni ise 3,58 mm (20 TA 05) ile 5,46 mm (20 ÇAL 62) arasında ölçülmüştür. Randıman değerleri ise %48,87 (20 ÇE 09) ile %51,25 (20 ÇAL 51) arasında bir aralıkta yer almıştır.20 ÇAL 178, 20 ÇAL 51, 20 ÇV 116, 20 ÇV 91, 20 ÇAL 12, 20 ÇE 09, 20 ÇAL 62, 20 BL 06 genotipleri tartılı derecelendirme metoduna göre ümitvar seçilmiştir.Araştırma bulgularımızda iri, ince kabuklu, yüksek randıman değerine sahip kısa zuruflu ve makinalı tarıma uygun genotiplerin bölgede yetiştiği tespit edilmiştir.Bölgenin yüksek genetik çeşitliliğe sahip olduğunu ve bu çeşitliliğin korunması gerektiğini ortaya koymaktadır.Bu genotiplerin belirlenmesi, ıslah çalışmaları için önemli bir kaynak oluşturmaktadır. Bu genotiplerin ileride yürütülecek ıslah çalışmlarında değerlendirilmesi, fındık tarımı ve ülke meyveciliğine kazandırılması önem taşımaktadır
Determining The Financial Literacy Levels Of Students Of The Faculty Of Economics And Administrative Sciences: A Research On Turkey, Kazakhstan, And Kyrgyzstan
No full textFinansal okuryazarlık, eğitim programları aracılığıyla edinilebilen bir beceri olarak görüldüğünden, finansal kavram ve uygulamalara hakim olan İktisadi ve İdari Bilimler Fakültesi öğrencilerinin finansal okuryazarlıklarını belirlemek bu araştırmanın temel amacıdır. Her ülke için finansal okuryazarlık oranlarının ve ölçek alt boyutlarının cinsiyete göre farklılaşıp farklılaşmadığına ilişkin bağımsız örneklemler için t-testi sonuçlarına göre, cinsiyete göre anlamlı ve pozitif bir fark olduğu; ayrıca her ülke için yaşa göre farklılaşıp farklılaşmadığına ilişkin analiz sonuçlarına göre, ekonomi bilgisi, ekonomik rasyonalite ve sosyo-ekonomik yansımalar açısından yaşa göre anlamlı bir fark olduğu, bireysel ekonomi alt boyutunun farklı yaş grupları açısından Kazakistan için, sosyo-ekonomik yansımalar boyutunun ise Kırgızistan için istatistiksel olarak farklı olduğu bulunmuştur. Çalışmanın bulguları, uzun vadeli eğitim programları tasarlamak için ihtiyaçların belirlenmesine katkı sağlayabilir
Influence of Visual Objects and Music on Anxiety Levels and Imaging Process in Patients Undergoing Coronary Ct Angiography
No full textTekinhatun, Muhammed/0000-0002-3240-6991Objective High anxiety during coronary computed tomography angiography (CCTA) can compromise imaging quality, increase radiation exposure, and elevate medication use. Therefore, optimizing waiting room environments to reduce patient anxiety is important for clinical outcomes. This study examines the effects of music and visual stimuli in the waiting rooms on patients' anxiety levels, heart rate, radiation dose, and beta-blocker use prior to CCTA. Methods This study, designed as a prospective and randomized trial, was conducted between April 15 and August 15, 2024, with 216 patients randomized into two groups: a standard waiting room (SWR) and a designed waiting room (DWR) featuring music and visual objects. Anxiety and depression levels were measured using the Hospital Anxiety and Depression Scale (HADS) and the State-Trait Anxiety Inventory (STAI). Additional parameters, such as heart rate, radiation dose, and beta-blocker requirement, were also recorded. Results In the DWR group, anxiety scores and heart rates were significantly lower compared to the SWR group (p 0.001). Additionally, a notable reduction in radiation dose and beta-blocker use was observed in the DWR group (p 0.05). In the general patient population, higher anxiety scores were associated with poorer imaging quality. Imaging quality was significantly better in the DWR group (p 0.001). Conclusion It has been demonstrated that waiting room designs enriched with music and visual stimuli reduce anxiety during CCTA scanning, enhancing patient comfort, improving imaging quality, and enabling imaging with lower radiation doses. The design of such waiting rooms can improve patient experience while optimizing outcomes.This research is funded by the Scientific and Technological Research Council of Turkiye (TUBITAK). The authors did not receive support from any organization for the submitted work. Open access funding provided by the Scientific and Technological Research Council of Turkiye (TUBITAK).Scientific and Technological Research Council of Turkiye (TUBITAK
The Impact of Climate Change on Financial Performance of The Electricity Industry: The Case of Türki̇ye
No full textThe world is encountering increasingly frequent and intense extreme weather events, driven by climate change. There is a strong scientific consensus that warns of an existential threat if greenhouse gas (GHG) emissions are not dramatically reduced and global temperatures kept under control soon. In this context, alternative energy technologies have become essential, as they can generate energy without adding to GHG emissions. T ; uuml;rkiye's electricity energy industry, as a core component of the country's economic stability and energy security, plays a major role in adapting to climate change. This study specifically focuses on listed electricity energy firms in T ; uuml;rkiye over the period from 2008 to 2022, investigating how climate change impacts their financial performance using panel data methodology. The empirical findings show that climate change has a significant and positive influence on financial outcomes, suggesting that adapting to climate pressures can benefit the industry financially. AsAa result, it is essential for the electricity power industry to incorporate climate-related strategies into their corporate agendas. However, technological innovations will mean little without large-scale public action, where local and national governments work together with international organizations and nations
Enhanced Conditional Ground Motion Selection Model Considering Spectral Compatibility and Variability of Three Components for Multi-Directional Analysis
No full textIn this study, the solution model based on the stochastic harmony search algorithm was proposed to obtain real ground motion (GM) records for nonlinear dynamic analysis of structures. Obtaining the GM record problem was formulated as a constrained engineering optimization problem. The solution model ensures spectral compatibility between the mean horizontal spectrum of selected ground motion (GM) records and the target horizontal spectrum, as well as the mean vertical spectrum of the selected GMs with the target vertical spectrum. This model also allows the management of record-to-record variability in both horizontal and vertical components of the selected GMs. Moreover, the model effectively addresses the period-dependent record-to-record variability in all orientations of seismic excitations simultaneously using a single-scale value, preserving the relative amplitude and phasing of actual GM components. The efficiency of the model has been demonstrated through numerical examples with various uniform hazard spectra, specifically those based on Eurocode-8 and the Turkish Building Earthquake Code, as well as scenario-based target spectra. The results demonstrate that through using the proposed model it is possible to obtain GM records with the desired spectral compatibility and spectral dispersion for both horizontal and vertical GM components. Thus, the model can be used as an efficient way to obtain appropriate GM records for nonlinear dynamic analyses of both two- and three-dimensional structural models for performance-based designs and/or evaluation frameworks, considering seismic excitations in both horizontal and vertical directions
Uefa Şampiyonlar Ligi ve Uefa Avrupa Ligi’nde Oyuncu Pozisyonlarına Göre Bağıl Yaş Etkisinin Analizi: Tanımlayıcı Araştırma
No full textAmaç: Bu çalışma, 2023-2024 sezonunda Avrupa Futbol Federas- yonları Birliği Şampiyonlar Ligi (UEFA CL) ve Avrupa Ligi'nde (UEFA EL) mücadele eden takımların kadrolarında yer alan profesyonel futbolcular ara- sında Bağıl Yaş Etkisi'nin (BYE) varlığını ve büyüklüğünü araştırmayı amaç- lamıştır. Ayrıca, oyuncuların doğum çeyreklerine göre dağılımının ligler ve oynadıkları pozisyonlara göre değişip değişmediği incelenmiştir. Gereç ve Yöntemler: Çalışmanın örneklemi, UEFA CL ve UEFA EL grup aşamala- rında yer alan 64 takımdan 2.168 profesyonel futbolcudan oluşmuştur. Oyun- cuların doğum tarihleri, dört çeyreğe ayrılmıştır: Q1 (Ocak-Mart), Q2 (Nisan-Haziran), Q3 (Temmuz-Eylül) ve Q4 (Ekim-Aralık). Veriler, kamuya açık futbol istatistik sitelerinden manuel olarak toplanmıştır. Doğum çeyrek- lerinin liglere ve oyuncu pozisyonlarına göre dağılımlarındaki farklılıkları in- celemek amacıyla ki-kare analizi yapılmıştır. Bulgular: Çalışma, anlamlı bir BYE'nin varlığını ortaya koymuştur; oyuncuların %32,0'si Q1'de doğarken, yalnızca %19,4'ü Q4'te doğmuştur. Bu durum UEFA CL ve UEFA EL'de tu- tarlılık göstermiş ve ligler arasında anlamlı bir farklılık olmadığını ortaya koy- muştur. Doğum çeyreklerine göre dağılım, oyuncuların pozisyonlarına (kaleci, defans, orta saha, forvet) göre anlamlı bir farklılık göstermemiştir. Sonuç: Bulgular, elit Avrupa futbolunda BYE'nin kalıcı bir etkisinin olduğunu ve yılın erken aylarında doğan oyuncuların avantajlı konumda bulunduğunu gös- termektedir. Bu yanlılık, farklı ligler ve pozisyonlar arasında tutarlıdır ve ye- tenek belirleme süreçlerinin daha kapsayıcı hale getirilmesi gerektiğine işaret etmektedir. BYE'nin ele alınması, yetenek seçiminde kapsayıcılığı ve çeşitli- liği artırarak profesyonel futbolun genel kalitesini yükseltebilir
Examination of Hemorheological and Exerkine Concentrations at Four-Week Whole Body Vibration Exercise in Obese Women: a Pilot Study
No full textBackground Obesity can result in increased visceral adipose tissue, insulin resistance, and impaired fasting glucose. Objective The aim of the study was to investigate the acute and chronic effects of WBVE on erythrocyte deformability, plasma viscosity, total oxidant/antioxidant status (TOS/TAS), oxidative stress index (OSI) and serum exerkine levels in obese women. Methods The study comprised 13 obese women (mean age 41.32 +/- 5.26 years, BMI 34.18 +/- 1.67 kg/m2). Participants performed exercises using a vibration device for 12 sessions. Erythrocyte deformability (ektacytometry), plasma viscosity (rotational viscometry), plasma TOS/TAS, OSI and serum irisin, visfatin and resistin concentrations (ELISA) were evaluated. Blood samples were collected before and after the exercise at the first and fourth weeks. Results Erythrocyte deformability values were increased after single session of WBVE at shear stress of 0.30 and 9.49 Pa and decreased after single session of WBVE at shear stress of 16.87 and 30 Pa (p 0.05) at the first week. However, after 4 weeks of WBVE, erythrocyte deformability at 0.30 and 0.53 Pa increased; TOS, OSI and plasma viscosity were all decreased (p 0.05). Serum irisin and resistin levels significantly increased after 4 weeks of WBVE (p 0.05), whereas visfatin did not show statistically significant changes (p > 0.05). Conclusions Four weeks of WBVE significantly improved the erythrocyte deformability, oxidative stress, plasma viscosity, and serum levels of irisin and resistin in obese women.Pamukkale University Scientific Research Projects Coordination Unit [2019HZDP015]This study has been supported by the Pamukkale University Scientific Research Projects Coordination Unit (2019HZDP015). The authors declare no financial or proprietary interest in any product or company associated with any device, instrument or drug mentioned in this article. The abstract of this study was presented as oral presentation in the 7th Exercise Physiology Symposium Eskisehir, Osmangazi University, 25th-26th April 2019. Abstract was printed in the congress abstract book, 2019; SB -07(page 42-45). The authors thank Assist. Prof. Hande Senol for her help in statistical analyses
Interaction of Lysozyme With Solid Supports Cryogels Containing Imidazole Functional Group
No full textThis paper details the preparation of acrylamide-based supermacroporous cryogels and their application in removing lysozyme from aqueous solutions. N-Vinyl imidazole was copolymerized with acrylamide as a comonomer to impart pseudo-specificity to the cryogels, forming poly(AAm-VIM) cryogel. Characterization studies to assess the physical and chemical properties of the synthesized cryogels involved swelling tests, Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis, Field Emission Scanning Electron Microscopy (FESEM), and Thermogravimetric Analysis (TGA-DTA). To ascertain the optimal conditions for the adsorption process, pH 9.0 (TRIS buffer) was selected for lysozyme adsorption, using the parametres such as initial concentration screening, ionic strength, temperature, and column flow rate. The Langmuir and Freundlich isotherm models were analyzed to assess the adsorption parameters mathematically. The regression coefficient results indicated that lysozyme adsorption aligned more closely with the Langmuir isotherm model. The adsorption process is considered to be thermodynamically physical and spontaneous. SDS-PAGE analysis assessed the purity of lysozyme isolated from an aqueous solution using a poly(AAm-VIM) cryogel column. The inertness and regeneration capacity of poly (AAm-VIM) cryogel affinity columns were assessed using reusability studies conducted during the adsorption-desorption cycle.This study was financially supported by the Pamukkale University Scientific Research Project Coordination with the project number of 2023BSP010.Pamukkale University Scientific Research Project Coordination [2023BSP010