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12篇 您的检索式:作者名="lknur"
    题名 作者 年代 出处 被引量
1Classification of pepper seeds using machine vision based on neural network显示文摘Pepper is widely planted and used all over the world as fresh vegetable and spice.Genetic and morphological information of pepper are stored through seeds.Determination of seed variety is crucial for correctly identifying genetic materials.Pepper varieties cannot be easily classified even by an expert eye due to the very small size of seeds and visual similarities.Hence,more advanced technologies are required to determine the variety of a pepper seed.A classification method was proposed to discriminate pepper seed based on neural networks and computer vision.Image acquisition was conducted using an office scanner at a resolution of 1200 dpi.Image features representing color,shape,and texture were extracted and used to classify pepper seeds.By calculating features from different color components,a feature database was constructed.Effective features were selected using sequential feature selection with different criterion functions.As a result of the feature selection procedure,the number of the features was significantly reduced from 257 to 10.Cross validation rules were applied to obtain a reliable classification model by preventing overfitting.Different numbers of neurons in the hidden layer and various training algorithms were investigated to determine the best multilayer perceptron model.The best classification performance was obtained using 30 neurons in the hidden layer of the network.With this network,an accuracy rate of 84.94%was achieved using the sequential feature selection and the training algorithm of resilient back propagation in classifying eight pepper seed varieties.Ferhat Kurtulmuş İlknur Alibaş Ismail Kavdir 2016International Journal of Agricultural and Biological Engineering2016,9,1:4
2Dehiscence and fen- estration in skeletal Class I , lI and m malocclusions assessed with cone-beam computed to mography 显示文摘Ahmet Yagei I lknur Veli Tancan Uysal 2012Angle Orthod2012,82,:1
3The relation between problematic Internet use and healthy lifestyle behaviours in high school students 显示文摘LKNUR Y FERDA Y 2012Advan Sch Mental Health Prom2012,5,2:1
4Adsorption of chromium ( VI ) from aqueous solution by activated carbon derived from olive bagasse and applicability of different adsorption models 显示文摘Demiral H Lknur Demiral Ttimsek F 2008Chemical Engineering Journal2008,144,2:1
5Gelatinization of waxy, normal and high amylose corn starches 显示文摘Aytunga Ank Kibar lknur Gneng Ferhunde U 2010GIDA2010,35,4:1
6A novel solidified floating organic drop microextraction method for preconcentration and determination of copper ions by flow injection flame atomic absorption spectrometry显示文摘?i?dem Arpa ?ahin ?lknur Tokg?z 2010Analytica Chimica Acta2010,,1:1
7Improvement in filtration characteristics of diatomite by calcination显示文摘Nezahat Ediz ?smail Bentli ?lknur Tatar 2010International Journal of Mineral Processing2010,,3:1
8Determination of iron and copper in food samples by flow injection cloud point extraction flame atomic absorption spectrometry显示文摘lknur Durukan 0,,01:1
9Adsorption of chromium (Vl) from aqueous solution byactivated carbon derived from olive bagasse and applicability of different adsorption models显示文摘Demiral H lknur Demiral Ti)msek F ct al 2008Chemical Engineering Journal2008,144,2:1
10Impact of inherited thrombophilias on first and second trimester maternal serum markers for aneuploidy显示文摘Aysel Uysal Derbent Filiz Fatma Yanik &Idot lknur &Idot neg? l &scedil Serap Simavli Nilgü n ? ztü rk Turhan 2012Journal of Maternal-Fetal and Neonatal Medicine2012,,11:1
11Clinical characteristics and outcomes of nosocomial COVID-19 in Turkey:A retrospective multicenter study显示文摘Objective:To identify the clinical characteristics and outcomes of hospital-acquired SARS-CoV-2 infection during the vaccination period nationwide in Turkey.Methods:COVID-19 patients followed in the pandemic services across Turkey between January 1,2021,and March 31,2022 were investigated retrospectively.Nosocomial COVID-19 was defined as a patient neither diagnosed with COVID-19 nor suspected COVID-19 at the hospital admission and was confirmed COVID-19≥5 days after hospital admission.The primary outcome of this study was in-hospital mortality;demographic features and vaccination status was compared between survivors and non-survivors.Results:During the study period,15573 COVID-19 patients were followed in 18 centers and 543(3.5%)patients were nosocomial COVID-19.Most patients with nosocomial COVID-19(80.4%)were transferred from medical wards.162(29.8%)of the patients with nosocomial COVID-19 admitted to the intensive care unit due to disease severity and 138(25.4%)of the patients died during hospital stay.Advanced age(≥65 years)and number of comorbid diseases(≥2)was found to be associated with mortality in nosocomial COVID-19(OR 1.74,95%CI 1.11-2.74 and OR 1.60,95%CI 1.02-2.56,respectively).Vaccination was associated with survival in nosocomial COVID-19(OR 0.25,95%CI 0.16-0.38).Conclusions:Patients with nosocomial COVID-19 had increased admission to intensive care units and higher mortality rate.Vaccination can decrease the in-hospital mortality rate.Süleyman Yıldırım Celalettin Yılmaz Gülru Polat Serap Argun Baris İlknur Başyiğit İlknur Kaya Ceyda Anar Mihriban Bozkurt HüsnüBaykal Hulya Dirol Gamzenur Ozbey Emine Ozsari Emel Cireli Ali KadriÇırak Dursun Tatar Mine Gayaf Selen Karaoglanoglu Yener Aydin Atilla Eroglu Yıldız Olçar Berna Botan Yıldırım Bengül Gürsoy Deniz Demir Yılmaz Elif Yelda Ozgun Niksarlioglu Ramazan Eren Ayşegül Tomruk Erdem Müge Meltem Tor Fusun Fakili MustafaÇolak Merve Erçelik Ali Tabaru Özlem Ediboglu 2023Asian Pacific Journal of Tropical Medicine2023,16,8:0
12Sustainability of lime stabilized road subgrade in mountainous regions of Türkiye显示文摘In this paper the use of lime stabilized subgrade for low volume roads in two regions with high mountains and different frost penetration conditions in Türkiye was investigated in terms of design,performance,and cost.Pavements on unstabilized and stabilized subgrade were designed for two regions(Izmir and Van),covering all climate variations.The resilient modulus of the lime stabilized subgrade with different soil pulverization levels for non-freezing and freezing conditions were taken from a previous laboratory study.Frost effects were considered in pavement design using two different approaches,including limited subgrade frost penetration method and reduced subgrade strength method.Detailed application and evaluation were performed for all steps.Lime stabilized subgrades significantly reduced the thickness of base courses,and the benefit of lime stabilization was highly dependent on soil pulverization level.A detailed cost analysis on the unstabilized and stabilized cases found that the use of lime stabilization in the subgrade provided significant initial cost savings.Comparative analysis by using the AASHTO(1993)method and KENPAVE software,and quantity effect of soil pulverization level on the performance of low volume roads from a service life perspective,show that subgrade resilient modulus can be estimated.It is also possible to make correct performance estimation in the field.The results of the study show that lime stabilization is a good solution for low volume roads in the mountainous regions of Türkiye.Yavuz ABUT İlknur BOZBEY Ece KURT BAL 2023Journal of Mountain Science2023,20,8:0
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