European Journal of Science and Technology最新文献_第6页

Mültecilere Yönelik Nefret Söyleminin Tespitinde Makine Öğrenmesi Modellerinin Kullanılması

European Journal of Science and Technology Pub Date : 2023-03-08 DOI: 10.31590/ejosat.1253132

Figen Eğin, Vahide Bulut

{"title":"Mültecilere Yönelik Nefret Söyleminin Tespitinde Makine Öğrenmesi Modellerinin Kullanılması","authors":"Figen Eğin, Vahide Bulut","doi":"10.31590/ejosat.1253132","DOIUrl":"https://doi.org/10.31590/ejosat.1253132","url":null,"abstract":"Sosyal medya kullanımının yaygınlaşması ile birlikte sosyal ağlar üzerinden çeşitli gruplara yönelik nefret söylemi gibi olumsuz paylaşımların kontrolsüzce yayılabildiği görülmektedir. Suriye İç Savaşı’nı takiben Türkiye’ye yaşanan göç, mültecilere yönelik nefret söylemini gündeme getirmiştir. Nefret söylemi, toplumsal huzurun sağlanabilmesi için önüne geçilmesi gereken önemli bir hastalık olarak betimlenmektedir. Nefret söyleminin tespiti konusunda Türkçe dilinde yapılan çalışmaların ve nefret söyleminin tespitinde kullanılabilecek kapsamlı bir veri setinin eksikliği göz önüne alınarak bu araştırmada sosyal ağlarda Türkçe dilinde yapılan paylaşımlarda mültecilere yönelik nefret söyleminin makine öğrenmesi yöntemleri ile tespiti üzerine çalışılmıştır. Lojistik regresyon (LR), Yapay Sinir Ağı (YSA), Destek Vektör Makineleri (DVM), Karar Ağaçları ve Rastgele Orman modelleri uygulanarak deneysel sonuçlar karşılaştırmalı olarak sunulmuştur. Rastgele Orman, YSA ve LR ile elde edilen performans değerlerinin DVM ve Karar Ağaçları modellerinden daha yüksek olduğu ortaya konmuştur.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86140140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Random Forest Importance-Based Feature Ranking and Subset Selection for Slope Stability Assessment using the Ranger Implementation 基于随机森林重要性的特征排序和子集选择在边坡稳定性评估中的应用

European Journal of Science and Technology Pub Date : 2023-03-08 DOI: 10.31590/ejosat.1254337

Selçuk Demir, E. Şahin

{"title":"Random Forest Importance-Based Feature Ranking and Subset Selection for Slope Stability Assessment using the Ranger Implementation","authors":"Selçuk Demir, E. Şahin","doi":"10.31590/ejosat.1254337","DOIUrl":"https://doi.org/10.31590/ejosat.1254337","url":null,"abstract":"Stability problems of slopes can arise from various factors such as geometrical, geological, seismic etc. For many years, conventional methods such as limit equilibrium method, numerical methods, and statistical methods have been successfully utilized to predict the stability of slopes. On the other hand, several machine learning (ML) attempts have been made for predicting slope stability using datasets available in the literature. The present study aims to build classification models for the assessment of the stability of slopes using the Ranger algorithm. A total of 168 cases with six input parameters (slope height, unit weight, slope angle, cohesion, pore water pressure ratio, and internal friction angle) are used to generate models. In the first step, random forest (RF) feature importance scores of the six features are determined and five different prediction models were produced by reducing the feature numbers of the dataset. The developed models are then assessed using performance metrics and results are compared to choose the best prediction model. According to the obtained results, the feature importance-based feature ranking and subset selection approach (i.e., RF feature importance) affect the performance of the models. It is observed that from the RF feature importance scores, the unit weight is found to be the most influencing feature that affects the stability of slopes for the studied dataset. In addition, the Ranger model developed with five features (Model IV) achieves the highest test accuracy with a value of 90%.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86824828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Baghdad Vehicle Traffic Congestion: Case Study 巴格达车辆交通拥堵:案例研究

European Journal of Science and Technology Pub Date : 2023-03-08 DOI: 10.31590/ejosat.1256277

Salim A. Mohammed Ali, E. Al-Hemiary

{"title":"Baghdad Vehicle Traffic Congestion: Case Study","authors":"Salim A. Mohammed Ali, E. Al-Hemiary","doi":"10.31590/ejosat.1256277","DOIUrl":"https://doi.org/10.31590/ejosat.1256277","url":null,"abstract":"Vehicles contribute a considerable amount of green gas emission to the environment. Methods of calculating such emission using conventional measuring tools do not give an accurate future estimation as the number of vehicles increases, since there are many factors that affect the estimation such as traffic delays. Therefore, a different approach is should be considered in measuring road networks traffic capacity for a specific region, especially when the numbers of vehicles change dramatically during rush hours. Furthermore, the amount of fuel consumption wastage during traffic delays cannot be easily calculated based of on the number of vehicles solely. In this paper, a comprehensive study is made to examine and to calculate the effect of traffic congestion in Baghdad city of Iraq in terms of: pollution, fuel consumption, and time cost, using the road network simulator of SUMO. Several scenarios are considered with randomly selected paths for each vehicle. In this study, several empirical equations are extracted from the simulation test results. As a result, an aberration is observed in fuel consumption and traffic delays while exceeding 100 thousand vehicle capacity for the whole city of Baghdad. However, the interpolated equations can be used to approximately measure the traffic metrics for higher number of vehicles for the same city.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82704705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thematic Park Congruence Analysis with Ecological Threshold Analysis Method, Case Study Çanakkale 基于生态阈值分析法的主题公园一致性分析，案例研究Çanakkale

European Journal of Science and Technology Pub Date : 2023-03-08 DOI: 10.31590/ejosat.1253939

Aylin ÇELİK TURAN, Murat Altinok

{"title":"Thematic Park Congruence Analysis with Ecological Threshold Analysis Method, Case Study Çanakkale","authors":"Aylin ÇELİK TURAN, Murat Altinok","doi":"10.31590/ejosat.1253939","DOIUrl":"https://doi.org/10.31590/ejosat.1253939","url":null,"abstract":"Thematic Parks are defined as open or closed spaces located in urban open green spaces, enabling people to live and work in a healthy way in urban life, reunification with nature, to get away from mental disorders and to do recreational activities. The most important difference of Thematic Parks from other recreational areas can be defined as the benefits they provide to the country's economy. Within the framework of planning criteria for Çanakkale-Center Thematic Park, which was chosen as the study area, a Thematic Park congruence analysis was carried out for Çanakkale with the Ecological Threshold Analysis Method using Geographic Information Systems (GIS). Land capability map, land use map, aspect map, slope map, elevation map, groundwater map and transportation map were created by classifying them in 1/25.000 scale from the maps to be used as a base in the analysis study. The maps used to determine the potential theme park area were divided into 1x1 km2 grids and scored with a criterion value of 4 for each grid. As a result of the scoring, one each I. and II. degree potential area and three III. degree potential area has been determined. As a result, within the scope of this study, suitable site selection for a Thematic Park that can be applied in Çanakkale has been determined.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78530879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rehabilitasyon Robotlarının Kontrolü için Bulanık Mantık ve PID Denetleyicinin Karşılaştırılması

European Journal of Science and Technology Pub Date : 2023-03-07 DOI: 10.31590/ejosat.1251862

Abdulhamit Sevgi, Mustafa Güneş

{"title":"Rehabilitasyon Robotlarının Kontrolü için Bulanık Mantık ve PID Denetleyicinin Karşılaştırılması","authors":"Abdulhamit Sevgi, Mustafa Güneş","doi":"10.31590/ejosat.1251862","DOIUrl":"https://doi.org/10.31590/ejosat.1251862","url":null,"abstract":"Doğrusal olmayan bir sistemin yanıtı genellikle bir doğrusal denetleyici kullanılarak istenen bir modele göre şekillendirilemez. PID denetleyiciler gibi geleneksel model tabanlı doğrusal denetleyicilerle doğrusal olmayan durumların gerçekleştirilmesi zordur ve denetleyicinin düzgün çalışması için sıfırlama önleyici sarma, geciktirilmiş integral eylem vb. gibi birçok ek önlem dahil edilmelidir. Bu nedenle doğrusal olmayan sistemler için genellikle Bulanık Mantık Kontrol gibi kontrol yöntemleri kullanılır. Bulanık Mantık, gömülü kontrol için hem doğrusal hem de doğrusal olmayan sistemlerin geliştirilmesinde uygulanabilen alternatif bir tasarım metodolojisidir. Tasarımcılar, bulanık mantık kullanarak daha düşük geliştirme maliyetleri, üstün özellikler ve daha iyi son ürün performansı sağlayabilirler. Bu sebeple bu çalışmada rehabilitasyon robotlarının kontrolü için MATLAB/Simulink ortamında bir Bulanık Kontrol denetleyici tasarlanmıştır. Daha sonra kontrol etkisi analiz edilip PID denetleyicinin etkisiyle karşılaştırılmıştır. Karşılaştırma sonucunda bulanık mantık denetleyici, PID kontrolünden özellikle yanıt süresi, kararlı durumdaki hata ve aşım gibi çeşitli parametrelerde daha üstün performans sergilemiştir.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"341 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79527477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

İnce Toprak İçeriğin Zeminin Kayma Mukavemeti Parametrelerine Etkisi

European Journal of Science and Technology Pub Date : 2023-02-22 DOI: 10.31590/ejosat.1166983

Ayse PEKRIOGLU BALKIS, Gudisaa GELANA NEGESSU, Aya Ahmad

引用次数: 0

Fermente Bir İçecek Olan Bozanın Dondurmanın Bazı Kalite Özelliklerine Etkisi

European Journal of Science and Technology Pub Date : 2023-02-22 DOI: 10.31590/ejosat.1222857

Betül Büşra Ayar, T. Gümüş, Deniz Damla ALTAN KAMER, Özgür Karadaş

{"title":"Fermente Bir İçecek Olan Bozanın Dondurmanın Bazı Kalite Özelliklerine Etkisi","authors":"Betül Büşra Ayar, T. Gümüş, Deniz Damla ALTAN KAMER, Özgür Karadaş","doi":"10.31590/ejosat.1222857","DOIUrl":"https://doi.org/10.31590/ejosat.1222857","url":null,"abstract":"Dünya genelinde en popüler dondurulmuş süt ürünü olan dondurma, insan diyetlerinin geliştirilmesi ve iyileştirilmesi için yüksek potansiyele sahiptir. Bu çalışmada besin değeri yüksek fonksiyonel bir gıda olan boza ilavesiyle besin içeriği zenginleştirilmiş ticari dondurma üretim olanakları araştırılmıştır. Bu kapsamda %5 (BD5), %10 (BD10), %15 (BD15), %20 (BD20) ve %50 (BD50) oranlarda boza ilave edilmiş dondurmaların mikrobiyolojik ve reolojik özellikleri ile birlikte fiziko kimyasal, ve duyusal parametreleri araştırılmıştır. Fizikokimyasal özelliklerin belirlenmesi amacıyla kuru madde, pH, asitlik (%laktik asit), toplam şeker, protein, yağ, overrun ve erime stabilitesi analizleri yapılmıştır. Dondurma bileşiminde artan boza konsantrasyonu dondurma formülasyonundaki şekeri oransal olarak azaltmıştır. En iyi erime stabilitesine sahip dondurma BD10 olarak belirlenmiştir. Dondurma formülasyonlarının reolojik karakteriasyonu Power-law modeline göre test edilmiş, dondurma örneklerinin psöudoplastik davranış gösterdiği belirlenmiştir. Dondurmaların kıvam indeksleri 5,47-10,29 Pa.sn arasında tespit edilmiş olup, en düşük viskozite kontrol örneğinde ve en yüksek viskozite BD50 örneğinde bulunmuştur. Akış davranış indeksi n değeri dondurma örneklerinin tümünde 1’in altında bulunmuş ve 0,431-0,505 arasında değişmiştir. Tiksotropik davranış yönünden BD10’un en yüksek geri kazanım kabiliyetine sahip olduğu tespit edilmiştir.. Depolama süreci dondurmaların reolojik özelliklerini etkilememiştir. Duyusal yönden en beğenilen örnek BD20 olmuştur. Boza ilaveli dondurmaların LAB içeriği 5 ile 5,65 log kob/g arasında bulunmuş ve depolama süresince de LAB sayısında önemli düzeyde artış görülmüştür. Boza ilaveli dondurmalar önemli seviyede LAB içeriğine sahip olduğu tespit edilmiştir. Sonuç olarak belirli oranda boza ilavesi dondurmanın mikrobiyolojik ve reolojik bazı özelliklerine olumlu yönde etki ettiği belirlenmiştir","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81948229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Choline Chloride Encapsulated PLGA Nanoparticles Labelled with Lanthanide Metals 氯化胆碱包封的镧系金属标记PLGA纳米颗粒

European Journal of Science and Technology Pub Date : 2023-02-20 DOI: 10.31590/ejosat.1197269

B. Uçar

{"title":"Choline Chloride Encapsulated PLGA Nanoparticles Labelled with Lanthanide Metals","authors":"B. Uçar","doi":"10.31590/ejosat.1197269","DOIUrl":"https://doi.org/10.31590/ejosat.1197269","url":null,"abstract":"Herein, choline chloride was loaded into PLGA nanoparticles to ensure its controlled release. Encapsulation efficiencies (EE) and loading capacities (LC) of them were determined. Also, the produced nanoparticles were analyzed with Zetasizer, FT-IR, SEM, and XRD. The surfaces of the nanoparticles were functionalized by labeling with three different natural lanthanide metals Europium, Gadolinium, and Lutetium to expand diagnostic and therapeutic capabilities with three different imaging tecniques. Metal labeling of the nanoparticles was confirmed with SEM-EDX analysis. EE of the choline chloride nanoparticles were ranging between 62.5%-88.9%. LC of the choline chloride nanoparticles varied from 34.9 to 61.4. The mean size distribution obtained from the Zetasizer analysis of the free nanoparticles was 261.0 ± 7.598 nm. The Z-average size of the encapsulated nanoparticles also varied from 257.5 to 270 nm. The quite negative zeta potential, for example, -17.85 ± 0.165 mV for free NPs showed that the nanoparticles were sufficiently stable. The elemental mapping of the metal labeled NPs verified the labeling procedure. By obtaining therapeutic choline chloride-loaded nanoparticles with different metal labels, theranostic agents with common target and the ability to eliminate limitations with different imaging and detection techniques have been produced.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86898059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust and accurate photoelectric system model design using the small-signal principle 利用小信号原理设计鲁棒准确的光电系统模型

European Journal of Science and Technology Pub Date : 2023-02-12 DOI: 10.31590/ejosat.1244942

Aissani Si̇ham, M. Bechouat, M. Sedraoui, T. Amieur

引用次数: 0

The Antioxidant Effect of Rosemary on the Oxidation Stability of Refıned Sunflower Oil 迷迭香对Refıned葵花籽油氧化稳定性的影响

European Journal of Science and Technology Pub Date : 2023-02-12 DOI: 10.31590/ejosat.1233032

Ayşegül TÜRK BAYDIR, A. Soltanbeigi, Hasan Maral

{"title":"The Antioxidant Effect of Rosemary on the Oxidation Stability of Refıned Sunflower Oil","authors":"Ayşegül TÜRK BAYDIR, A. Soltanbeigi, Hasan Maral","doi":"10.31590/ejosat.1233032","DOIUrl":"https://doi.org/10.31590/ejosat.1233032","url":null,"abstract":"In this study, the essential oil chemical compounds of rosemary (Rosmarinus officinalis L.) and its antioxidant activity on the oxidation stability of refined sunflower oil (RSO) were investigated by the Rancimat method. The plant material was obtained from Afyonkarahisar Medicinal and Aromatic Plants Center/Turkey. Based on the GC/FID-MS analysis result, 1,8-Cineole (15.18%), Camphor (11.39%), Borneol (11.39%), Germacrene D (11.12%), Carvacrol (11.05%), α-Pinene (6.01%) and p-Cimene (3.07%) were identified as the major constituents of rosemary essential oil. The total antioxidant activity of rosemary essential oil was determined using the DPPH method. The EC50 value was measured as 3.35 mg mL-1. While the induction time of RSO is 1.57 hours on average,the induction time of RSO with 1 g of 100 g-1 rosemary added was 1.68 hours on average, and the induction time of RSO with 5 g of 100 g-1 rosemary added was 1.79 hours on average. According to the results, rosemary, as an economic medicinal and aromatic plant, significantly increased the oxidation stability of RSO. Therefore, rosemary can be recommended as a natural antioxidant to extend the shelf life of edible fixed oils.","PeriodicalId":12068,"journal":{"name":"European Journal of Science and Technology","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80925751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0