Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2025/r/bayburt/16124
  The Effectiveness of Advanced Machine Learning Models in IQ Prediction in the Context of Education, Health, and Socioeconomic Indicators

  Sebetci, Özel; Ayberkin, Doruk

  This study investigates the effectiveness of advanced machine learning models in predicting IQ levels using a diverse set of socioeconomic and health indicators from global databases such as WHO, the World Bank, and United Nations organizations. The research employs various algorithms, including Linear Regression, Random Forest, Gradient Boosting, Support Vector Machines, Ridge and Lasso Regressions, XGBoost, LightGBM, and a Stacking Regressor to capture both linear and non-linear relationships. Evaluation metrics such as Mean Absolute Error (MAE), Root Mean Square Error (RMSE), and R-squared (R²) reveal that LightGBM and Stacking Regressor models excel in accuracy and generalization. The study highlights the trade-off between model interpretability and predictive power, emphasizing that simpler models offer greater transparency. In contrast, more complex models successfully capture intricate interactions among education, health, and economic factors. The findings provide valuable insights for policymakers and researchers, suggesting that machine learning approaches can significantly enhance understanding of the determinants of IQ and aid in developing targeted strategies in education and social policy.

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• MakaleAçık Erişim2023/r/bayburt/15727
  A Nested Square Shaped Metasurface-Based Broadband Linear Polarization Converter for Ku-Band Applications

  Kaya, Yunus

  This paper presents a wideband, thin, low-cost, and easy to fabricate linear polarization (LP) converter design utilizing metasurface (MS) for Ku-band (12-18 GHz) applications (also in the 18-19 GHz part of the K-band (18-27 GHz)). The design has a topology on a 1.6 mm thick FR-4 dielectric material with copper MS on the front and an entirely copper slab on the back. The presented design shows a polarization conversion ratio (PCR) of beyond 90% within the 12-19 GHz frequency band and also over 99% in the 12.5-13.1 and 16.32-17.64 GHz frequency ranges. To further give insight into the physical structure of the suggested MS-based polarization converter (PC), both the u – v axes are analyzed, and the existing surface behaviors at resonance frequencies are investigated. We compare the performance outputs with other Ku-band PCs, and the efficiencies of the suggested strategy over current MS-based LP converters are emphasized

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• MakaleAçık Erişim2022/r/bayburt/15762
  Forecasting of Export Volume Using Artificial Intelligence Based Algorithms

  Ozden, Erdemalp

  Technological breakthroughs have transformed communication and taken transportation, health, and commerce to an unprecedented level. In this way, sudden developments have rapidly affected all countries. In this context, analysis methods are changing compared to the past, and annual analyses fail to catch the trend even for macroeconomic indicators. In this paper, new artificial intelligence-based estimation methods were used to see the future trend of export volume, and their estimation performances were compared by adding them to the classical econometric method. Historical quarterly data from 2013 to 2021 were used in the training and testing phases of the models. For this purpose, the variables of gross domestic product, foreign direct investment, and dollar exchange rate, which affect the export volume, were determined as inputs in estimating the export volume. According to the analysis results, support vector machine model was determined as the best method for predicting export volume in Turkey. This study can provide an essential basis for policymakers to export estimation and formulate their export-enhancing policies effectively.

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• MakaleYalnız künye2021/r/bayburt/14774
  Kars İli Sarıkamış İlçesi İçme Suyu Arıtma Tesisi Giriş ve Çıkış Su Kalitesinin Aylara Göre Değişiminin İncelenmesi

  Kul, Sinan; İrdemez, Şahset; Özger, Hacer; Torun, Fatma Ekmekyapar

  Bu çalışmada Kars ili sınırları içerisinde yer alan Sarıkamış Belediyesi İçme Suyu Arıtma Tesislerinde arıtılansuyun fiziksel ve kimyasal özelliklerine ilişkin tesis giriş ve çıkış değerleri karşılaştırılarak bu değerlerin içmesuyu standartlarına uygunluğunun değerlendirilmesi amaçlanmıştır. Bu amaçla Temmuz 2017-Haziran 2018dönemini kapsayan aylık periyotlarda, tesisin giriş ve çıkış sularından elde edilen numunelerde pH, sıcaklık,elektriksel iletkenlik, renk, alkalinite, nitrit, bulanıklık, demir, organik madde miktarı, sülfat, mangan, amonyumve alüminyum gibi içme suyu parametrelerinin analizleri yapılmıştır. Çalışmada elde edilen veriler TS 266 veİnsani Tüketim Amaçlı Sular Hakkında Yönetmelik ile karşılaştırılmış ve sonuçların sıcaklık parametresi dışındatüm su kalitesi standartlarını sağladığı anlaşılmıştır.

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• MakaleAçık Erişim2021/r/bayburt/14534
  Effects of Artificial Aging of UVB-313 Lamps on Some Surface Properties of UV System Varnished Black Locust Wood

  Ayata, Ümit; Gürleyen, Levent; Çakıcıer, Nevzat

  Black locust wood is known to be used in poles, mine timber, railway ties, ship timber, insulator pins, wood nails for wooden shipbuilding, crates, boxes, pegs, fences, construction and furniture industries. In this study, color, gloss, surface adhesion resistance and pendulum hardness of UV system parquet varnishes (3 and 5 coats) applied to the surface of acacia (Robinia pseudoacacia L.,) wood after accelerated aging with UVB-313 lamps (252 and 504 h). The effects on the properties were investigated. According to the findings obtained, the results of analysis of variance belonging to all tests were determined to be significant. The glossiness values, pendulum hardness values and surface adhesion resistance of the lacquered materials with 5 layers application were higher than those of the varnished materials with 3 layers application at 20o, 60o and 85o in parallel (//) and perpendicular (⊥) directions to the fibers. After aging, a* values increased for both varnish types, while L* values decreased. It can be said that this type of wood can be used in the parquet industry.

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• MakaleYalnız künye2018/r/bayburt/15288
  Evaluation of Inhibition Effects of Some Cardiovascular Therapeutics on Human Erythrocyte Carbonic Anhydrase Isoenzymes

  Isgor, Mehmet Mustafa; Kılınç, Namık; Alim, Zuhal; Beydemir, Şükrü; Sengül, Bülent

  Carbonic anhydrase enzyme plays a vital role in metabolic events such as acid-base regulation and respiration. Inour research, it is tried to determine the inhibitory influences of the cardiovascular therapeutics esmololhydrochloride, amiodarone hydrochloride and lidocaine hydrochloride on human erythrocytes carbonic anhydrases(hCA I and II). In accordance with this purpose, carbonic anhydrase isoenzymes were purified from humanerythrocytes by using affinity chromatography method. Enzyme purity was checked by SDS-PAGEelectrophoresis method. After the carbonic anhydrase enzymes were purified, the inhibitory affects ofcardiovascular therapeutics on these enzymes, using esterase activity, which is the method of measuring in vitroactivity, were examined. The three cardiovascular therapeutics dose-dependently decreased activity of hCAs. IC50values of amiodarone hydrochloride, esmolol hydrochloride and lidocaine hydrochloride were found to be,respectively, 0.91 mM, 5 mM, 5.8 mM for hCA-I and 0.41 mM, 3.5 mM, and 6.36 mM for hCA-II. Our resultsproved that, under in vitro conditions, cardiovascular therapeutics significantly inhibit human CA-I and IIactivities. So, irregular use of these medicines may cause serious adverse effects in terms of human health.

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