Konya Journal of Engineering Sciences最新文献_第5页

VARYASYONEL MOD AYRIŞTIRMASIYLA ÖKSÜRÜK SESLERİNDEN KOVİD-19 TESPİTİ 用变异模式分解法检测咳嗽声中的 covid-19

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1110235

Fatma Zehra SOLAK

{"title":"VARYASYONEL MOD AYRIŞTIRMASIYLA ÖKSÜRÜK SESLERİNDEN KOVİD-19 TESPİTİ","authors":"Fatma Zehra SOLAK","doi":"10.36306/konjes.1110235","DOIUrl":"https://doi.org/10.36306/konjes.1110235","url":null,"abstract":"According to the World Health Organization, cough is one of the most prominent symptoms of the COVID-19 disease declared as a global pandemic. The symptom is seen in 68% to 83% of people with COVID-19 who come to the clinic for medical examination. Therefore, during the pandemic, cough plays an important role in diagnosing of COVID-19 and distinguishing patients from healthy individuals. This study aims to distinguish the cough sounds of COVID-19 positive people from those of COVID-19 negative, thus providing automatic detection and support for the diagnosis of COVID-19. For this aim, “Virufy” dataset containing cough sounds labeled as COVID-19 and Non COVID-19 was included. After using the ADASYN technique to balance the data, independent modes were obtained for each sound by utilizing the Variational Mode Decomposition (VMD) method and various features were extracted from every mode. Afterward, the most effective features were selected by ReliefF algorithm. Following, ensemble machine learning methods, namely Random Forest, Gradient Boosting Machine and Adaboost were prepared to identify cough sounds as COVID-19 and Non COVID-19 through classification. As a result, the best performance was obtained with the Gradient Boosting Machine as 94.19% accuracy, 87.67% sensitivity, 100% specificity, 100% precision, 93.43% F-score, 0.88 kappa and 93.87% area under the ROC curve.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135674279","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

COMPUTER VISION IN PRECISION AGRICULTURE FOR WEED CONTROL: A SYSTEMATIC LITERATURE REVIEW 计算机视觉在精准农业杂草控制中的应用:系统文献综述

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1097969

Damla KARAGOZLU, John Karima MACHARIA, Tolgay KARANFİLLER

引用次数: 0

EXTRACTION OF PHENOLIC COMPOUNDS FROM FENUGREEK SEEDS: MODELLING AND ANALYSIS USING ARTIFICIAL NEURAL NETWORKS 胡芦巴种子中酚类化合物的提取:利用人工神经网络建模和分析

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1208658

Selami BEYHAN, Hilal İŞLEROĞLU

引用次数: 0

Investigation of Fairy Chimneys of Cihanbeyli-Celil Strait (Konya) and Determination of Physico-Mechanical Properties 吉汉贝利-塞里尔海峡仙女烟囱的研究及物理力学性能测定

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1048798

Niyazi BİLİM, Bilgehan KEKEÇ, Emre KARAKAYA, Özer KARAKAYACI

引用次数: 0

INVESTIGATION OF PHYSICOCHEMICAL AND THERMAL PROPERTIES OF CLAY-HYDROGEL COMPOSITES 粘土-水凝胶复合材料的物理化学和热性能研究

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1218991

Firdevs ÇİRLİ, Gülcihan GÜZEL KAYA, Hüseyin DEVECİ

{"title":"INVESTIGATION OF PHYSICOCHEMICAL AND THERMAL PROPERTIES OF CLAY-HYDROGEL COMPOSITES","authors":"Firdevs ÇİRLİ, Gülcihan GÜZEL KAYA, Hüseyin DEVECİ","doi":"10.36306/konjes.1218991","DOIUrl":"https://doi.org/10.36306/konjes.1218991","url":null,"abstract":"Hydrogels are cross-linked polymeric networks which retain large amounts of water. The hydrogels with response capability to various stimuli such as pH and temperature have received great attention in many fields. In this study, hydrogels were synthesized by free radical solution polymerization through optimization of acrylamide/sodium acrylate mole ratio and ethylene glycol dimethacrylate content. With the addition of sepiolite as filler into the hydrogel network which had highest swelling percent, hydrogel composites were obtained. In the presence of 10 wt% sepiolite, maximum swelling percent was determined as approximately 10600%. Swelling properties of the hydrogel composite including 10 wt% sepiolite was investigated depending on pH, salt effect and temperature. With increasing pH value, swelling percent of the hydrogel composite showed an increase. At high temperatures, the hydrogel composite exhibited higher swelling percent. Swelling tests in 0.1 M NaCl, CaCl2 and FeCl3 solutions revealed that the lowest swelling percent was observed in 0.1 M FeCl3 solution. Fourier transform infrared spectroscopy (FTIR) analyses verified successfully preparation of the hydrogel composites. Regular layers of the sepiolite in the hydrogel network which made water diffusion easily were shown by scanning electron microscopy (SEM) analyses. Thermogravimetric analyses (TGA) indicated that thermal stability of the hydrogel network was increased with the addition of sepiolite.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135674284","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

KINEMATIC ANALYSIS OF CONSTANT BREADTH CAM DRIVEN LINKAGES 等宽凸轮驱动机构的运动学分析

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1249830

Mert Eren AYĞAHOĞLU, Ziya ŞAKA

{"title":"KINEMATIC ANALYSIS OF CONSTANT BREADTH CAM DRIVEN LINKAGES","authors":"Mert Eren AYĞAHOĞLU, Ziya ŞAKA","doi":"10.36306/konjes.1249830","DOIUrl":"https://doi.org/10.36306/konjes.1249830","url":null,"abstract":"Several constant breadth curves are defined that can be used as cam profiles in constant breadth cam mechanisms that are closed cam mechanisms. There are two objectives for this study. One of them is to study the kinematic analysis of different type of constant breadth cam mechanisms. The other objective is to obtain a dwell period for constant breadth cam driven linkages that is impossible for a standard cam mechanism. A general kinematic analysis of a constant breadth cam mechanism with translating flat-faced follower was carried out with the principle of kinematic inversion. With the results, the kinematic analyses of the constant breadth cam driven inverted slider crank mechanism and four bar mechanism were examined in detail and a general method is given for all constant breadth cam profiles and cam driven linkages. It has been seen that a dwell period of 45° (with the fixed joint coordinates as x_n = 18 mm and y_n= 8.5 mm) and 40° (with the fixed joint coordinates as x_n = 18.5 mm and y_n= 8.5 mm) can be obtained in designed cam driven four bar and inverted slider crank mechanism respectively. After the displacement analysis, some velocity and acceleration analysis examples are given by taking the derivative of displacement. Similar kinematic analyses are possible for cam-driven mechanisms with more links. Also, it has been seen that changing the location of fixed joint of the cam profile can affect the displacement, velocity and acceleration graphics of the mechanism. With this, the dwell period can be changed too.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135675792","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

Ni2ZnAl BİLEŞİĞİNİN İLK PRENSİPLER YÖNTEMİ İLE İNCELENMESİ 用第一原理法研究 Ni2ZnAl 化合物

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1171749

Tahsin ÖZER

{"title":"Ni2ZnAl BİLEŞİĞİNİN İLK PRENSİPLER YÖNTEMİ İLE İNCELENMESİ","authors":"Tahsin ÖZER","doi":"10.36306/konjes.1171749","DOIUrl":"https://doi.org/10.36306/konjes.1171749","url":null,"abstract":"In this study, ground state properties of Ni2ZnAl alloy in L21 phase from Heusler family were optimized. The calculated parameters are in harmony with the available literature data. Elastic constants were calculated using optimized parameters. The calculated elastic constants were found to meet the Born mechanical stability criteria. By using these constants, some mechanical and thermodynamic properties of the material such as elastic modulus, Vicker hardness, anisotropic nature, melting temperature were investigated in detail. Calculations showed that the Ni2ZnAl alloy is ductile, soft, and anisotropic. As such, it is a candidate material for applications that do not require hardness. The free energy, vibrational energy, entropy, and heat capacity of the Ni2ZnAl alloy were investigated using a semi- harmonic approach in the range of 0-800 K. All the total energy calculations were performed using the open-source Quantum Espresso software and ab-initio pseudopotential method based on the density functional theory (DFT) scheme within a generalized gradient approximation (GGA). According to the data obtained because of the study, Ni2ZnAl alloy is a potential candidate for industrial use.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135674035","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

ÇEVRESEL SESLERİN EVRİŞİMSEL SİNİR AĞLARI İLE SINIFLANDIRILMASI 利用进化神经网络对环境声音进行分类

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1201558

Yalçın DİNÇER, Özkan İNİK

{"title":"ÇEVRESEL SESLERİN EVRİŞİMSEL SİNİR AĞLARI İLE SINIFLANDIRILMASI","authors":"Yalçın DİNÇER, Özkan İNİK","doi":"10.36306/konjes.1201558","DOIUrl":"https://doi.org/10.36306/konjes.1201558","url":null,"abstract":"Çevresel faaliyetlerin sonuçlarını tahmin edebilecek ve aynı zamanda bu faaliyetlerin ortamı hakkında bilgi edinile bilinmesi için ses verisinin kullanılması çok önemlidir. Kentlerde meydana gelen gürültü kirliliği, güvenlik sistemleri, sağlık hizmetleri ve yerel hizmetler gibi faaliyetlerin işleyişini ve temel bilgilerini elde etmek için ses verisinden faydalanılmaktadır. Bu anlamda Çevresel Seslerin Sınıflandırması (ÇSS) kritik önem kazanmaktadır. Artan veri miktarı ve çözümlemedeki zaman kısıtlamalarından dolayı anlık otomatik olarak seslerin tanımlanmasını sağlayan yeni ve güçlü yapay zekâ yöntemlerine ihtiyaç duyulmaktadır. Bu sebeple yapılan çalışmada iki farklı ÇSS veri setinin sınıflandırılması için yeni bir yötem önerilmiştir. Bu yöntemde ilk olarak sesler görüntü formatına çevrilmiştir. Daha sonra görüntü formatındaki bu sesler için özgün Evrişimsel Sinir Ağları (ESA) modelleri tasarlanmıştır. Her bir veri seti için özgün olarak tasarlanan birden fazla ESA modelleri içerisinden en yüksek doğruluk oranına sahip ESA modelleri elde edilmiştir. Bu veri setleri sırasıyla ESC10 ve UrbanSound8K veri setleridir. Bu veri setlerindeki ses kayıtları 32x32x3 ve 224x224x3 boyutuna sahip görüntü formatına çevrilmiştir. Böylelikle toplamda 4 farklı görüntü formatında veri seti elde edilmiştir. Bu veri setlerini sınıflandırılması için geliştirilen özgün ESA modelleri sırasıyla, ESC10_ESA32, ESC10_ESA224, URBANSOUND8K_ESA32 ve URBANSOUND8K_ESA224 olarak isimlendirilmiştir. Bu modeller veri setleri üzerinde 10-Kat Çapraz Doğrulama yapılarak eğitilmiştir. Elde edilen sonuçlarda, ESC10_ESA32, ESC10_ESA224, URBANSOUND8K_ESA32 ve URBANSOUND8K_ESA224 modellerinin ortalama doğruluk oranları sırasıyla %80,75, %82,25, %88,60 ve %84,33 olarak elde edilmiştir. Elde edilen sonuçlar aynı veri setleri üzerinde literatürde yapılan diğer temel çalışmalarla karşılaştırıldığında önerilen modellerin daha iyi sonuçlar elde ettiği görülmüştür.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135674283","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

KONVEKTİF VE İMAL EDİLEN SICAKLIK KONTROLLÜ MİKRODALGA FIRINLARLA KURUTULAN IHLAMURUN FİZİKO-KİMYASAL VE BUHARLAŞMA ENERJİ DEĞERLERİNİN TESPİT EDİLMESİ 用对流微波炉和人造温控微波炉干燥椴树的理化值和蒸发能值的测定

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1219960

Hakan POLATCI, Muhammed TAŞOVA

{"title":"KONVEKTİF VE İMAL EDİLEN SICAKLIK KONTROLLÜ MİKRODALGA FIRINLARLA KURUTULAN IHLAMURUN FİZİKO-KİMYASAL VE BUHARLAŞMA ENERJİ DEĞERLERİNİN TESPİT EDİLMESİ","authors":"Hakan POLATCI, Muhammed TAŞOVA","doi":"10.36306/konjes.1219960","DOIUrl":"https://doi.org/10.36306/konjes.1219960","url":null,"abstract":"Ihlamur bünyesinde önemli bioaktif maddelerden (antioksidan, fenolik bileşikler) dolayı hem sağlık hem de içeçek olarak tüketilmektedir. Kurutulduktan sonra özellikle çay olarak tüketimi oldukça yaygındır. Bu çalışmada, konvektif (KK) ve imal edilen sıcaklık kontrollü mikrodalga (SKM) kurutma fırınlarında 40, 45 ve 50 ºC sıcaklıklarında ıhlamur kurutulmuştur. Kurutma işlemlerinde ıhlamur örnekleri 3.21±0.19 nem değerinden 0.12±0.02 g nem/g kuru madde nem değerine kadar kurutulmuştur. KK işleminde belirtilen sıcaklıklar için ıhlamur örnekleri sırasıyla 23.5, 15 ve 8.5 saatte kurumuştur. SKM işleminde ise belirtilen sıcaklıklar için sırasıyla 495, 225 ve 135 dakikada kurumuştur. KK işleminde tespit edilen ortalama kuruma oranı değerleri 0.004025-0.008274 g nem/g kuru madde.dakika, SKM işleminde ise bu değer ortalama 0.006178-0.0228 g nem/g kuru madde.dakika değerleri arasında değiştiği belirlenmiştir. Efektif difüzyon değerleri KK işleminde 1.46x10-5-6.02x10-6 m2/s arasında, SKM işleminde ise bu değer 1.06x10-6-2.35x10-7 m2/s arasında değiştiği belirlenmiştir. Aktivasyon enerji değerleri KK ve SKM işlemleri için sırasıyla 74.50 ve 122.47 kJ/mol olarak hesaplanmıştır. Renk kalitesi açısından en uygun (p&lt;0.05) kurutma işlemi olarak SKM yöntemi tespit edilmiştir. Buharlaşma enerji değerleri açısından KK ve SKM işlemleri için sırasıyla 0.6998-0.8312 ve 0.5267-0.6497 kWh değerleri arasında değiştiği tespit edilmiştir. Bu çalışmada imal edilen sıcaklık kontrollü mikrodalga (SKM) kurutma işlemi ıhlamurun kuruma kinetiği, renk kalitesi ve buharlaşma enerji parametreleri açısından kurutma yöntemi olarak uygun olduğu önerilmektedir.","PeriodicalId":17899,"journal":{"name":"Konya Journal of Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135674033","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

COVID-19 Hakkındaki Türkçe Tweetlerde LSTM Ağı Kullanılarak Duygu Sınıflandırması 使用 LSTM 网络对有关 COVID-19 的土耳其推文进行情感分类

Konya Journal of Engineering Sciences Pub Date : 2023-06-01 DOI: 10.36306/konjes.1173939

Mustafa ÇATALTAŞ, Büşra ÜSTÜNEL, Nurdan AKHAN BAYKAN

引用次数: 0