Aksaray University Journal of Science and Engineering最新文献

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WORK VARIABLES AND PHYSIOLOGICAL INDICES IN MASONRY WORK 砌体工程中的功变量与生理指标
Aksaray University Journal of Science and Engineering Pub Date : 2022-11-09 DOI: 10.29002/asujse.1113039
A. Azodo
{"title":"WORK VARIABLES AND PHYSIOLOGICAL INDICES IN MASONRY WORK","authors":"A. Azodo","doi":"10.29002/asujse.1113039","DOIUrl":"https://doi.org/10.29002/asujse.1113039","url":null,"abstract":"This study investigated the physiological response functions of the masons during masonry work using three standard sizes of construction block weights at varying working heights. The assessment involved a repeated job handling design approach. The participants in this study were 12 masons who had at least one year of experience in working with sandcrete blocks and burnt bricks. Each participant constructed 20-block walls, 7 courses high using 9 inches and 6 inches sandcrete blocks and 20-block wall, 11 courses high using burnt bricks. The physiological response data measured were heart rate, body temperature and blood pressures (systolic and diastolic) at each wall height constructed. The ergonomic investigation principle of the work factors affecting masonry work was hinged on known physiological indices (oxygen consumption and energy expenditure rate) to evaluate the degree of the effects of the task on masons. The result obtained showed that the masons experienced different levels of stresses at ground level to knee height, knee height to chest height and neck height while working with the 6 and 9 inches sandcrete blocks. The building construction using burnt bricks recorded varied results, as there were no differences in body temperature, heart rate and blood pressure throughout the wall height. This study concluded that the construction block weights have effect on the physiological response functions of the masons at varying working heights.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84082437","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
Experimental Investigation of the Effects of Cutting Parameters on Geometric Tolerances in Machining 切削参数对加工几何公差影响的实验研究
Aksaray University Journal of Science and Engineering Pub Date : 2022-08-04 DOI: 10.29002/asujse.1134933
Hasan Akyıl, Osman Bi̇can
{"title":"Experimental Investigation of the Effects of Cutting Parameters on Geometric Tolerances in Machining","authors":"Hasan Akyıl, Osman Bi̇can","doi":"10.29002/asujse.1134933","DOIUrl":"https://doi.org/10.29002/asujse.1134933","url":null,"abstract":"İmalat sanayinde büyük öneme sahip olan talaşlı imalat prosesinde istenilen, hassas tolerans aralığında ve düşük yüzey pürüzlülük değerlerinde parça imal edebilmek en önemli amaç olarak görülmektedir. Yüzey kalitesi ve ölçü tamlığı, temas ve etkileşim halinde çalışan makine parçalarının dayanımını ve performansını önemli derecede etkilemektedir. Bu çalışmalar esnasında CNC tornalama işlemi ile üretilen ve özellikle imalat sektöründe genişçe kullanım alanına sahip olan SAE 1040 malzemelerin geometrik tolerans değerlerinden silindiriklik, dairesellik ve doğrusallık değerleri analiz edilmiştir. Prosese etkisi yüksek olan bu bağımlı değişkenler üzerine etki eden, tornalama işlemlerinde büyük öneme sahip olan kesme parametre değişkenlerinin etkisi incelenmiştir. Deneyler DOOSAN Lynx 2100 CNC torna tezgahında Q8 Brunel XF 450 soğutma sıvısı kullanılarak gerçekleştirilmiştir. Takım tutucu olarak WIDIA DWLNR-2525M08 ve kesici uç olarak WNMG0804086P TN20P tercih edilmiştir. İşlemler üç farklı talaş derinliğinde (1 mm, 1.5 mm, 2 mm), üç farklı kesme hızında (150 m/dak, 200 m/dak, 275 m/dak) ve üç farklı ilerlemede (0.15 mm/dev, 0.2 mm/dev, 0.24 mm/dev) gerçekleştirilmiştir. Deneyler sonrası elde edilen numune parçalarının silindiriklik, dairesellik ve düzlemsellik değerleri DEA GLOBAL CMM 3D ölçüm cihazında ölçülmüştür. Elde edilen verilerin değerlendirilmesi için, istatistiksel yöntem olan Taguchi metodu kullanılmıştır. Bu metot ile deneylere harcanacak zaman ve maliyetten tasarruf sağlanmış, deney sonuçlarından elde edilen veriler yorumlanmıştır. Ek olarak bağımlı ve bağımsız değişkenler arasındaki en etkili olan parametreleri belirlemek için varyans analizi (ANOVA) kullanılmıştır.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90954841","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
GM (1,1) ve EXGM (1,1) Tahmin Modellerinin Türkiye’nin Ar-Ge Harcamalarına Uygulanması
Aksaray University Journal of Science and Engineering Pub Date : 2022-07-18 DOI: 10.29002/asujse.1087288
Levent Akyüz, Halis Bilgil
{"title":"GM (1,1) ve EXGM (1,1) Tahmin Modellerinin Türkiye’nin Ar-Ge Harcamalarına Uygulanması","authors":"Levent Akyüz, Halis Bilgil","doi":"10.29002/asujse.1087288","DOIUrl":"https://doi.org/10.29002/asujse.1087288","url":null,"abstract":"Disiplinler arası bir bilim alanı olan Gri sistem Teorisi az sayıda veri kullanarak bilinmeyen sistemlerin davranışını tahmin etmektedir ve birçok alana başarı ile uygulanmıştır. Bu çalışmada ise Gri Sistem Teorisi Türkiye’nin Araştırma ve Geliştirme (Ar-Ge) harcamalarını tahmin etmek için kullanılmıştır. 2011-2020 yılları arasındaki Ar-Ge harcamaları verileri Türkiye İstatistik Kurumu’ndan alınarak 2021-2030 yıllarının tahmini Standart Gri Model (GM (1,1)) ve Üstel Gri Model (EXGM (1,1)) kullanılarak yapılmıştır. Her iki modelin tahmin değerlerindeki hata ve korelasyon sonuçları karşılaştırılmıştır. 2011-2020 yılları arasındaki verileri kullanarak, gerçek ve tahmin değeri arasındaki yüzde bağıl hata (RPE) ve ortalama yüzde bağıl hata (MAPE) belirlenmiştir. \u0000Sonuç olarak MAPE değeri GM (1,1) modeli ile % 2,95 ve EXGM (1,1) modeli ile % 1,48 olarak hesaplanmıştır. Gerçek değer ve tahmini değerin arasındaki korelasyonu gösteren R2 değerleri sıra ile GM(1,1) modeli için 0,9974 ve EXGM (1,1) modeli için 0,9985 olarak belirlenmiştir. Hesaplanan bağıl hata ve R2 değerleri ile tahminin kesinliği ortaya konmuştur. Buna göre 2021-2030 yılları için Ar-Ge harcamaları tahmin edilmiştir. EXGM (1,1) yönteminin tahmin kesinliğinin daha yüksek olduğu belirlenmiştir. Sonuç olarak önümüzdeki on yıl içerisinde Ülkemizin Ar-Ge harcamalarının üstel bir şekilde artacağı öngörülmektedir.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79817178","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
İleri Veri İşlem Yöntemleri İle Su Kaynaklarının Kullanımı Ve Planlanmasının Optimizasyonu
Aksaray University Journal of Science and Engineering Pub Date : 2022-06-24 DOI: 10.29002/asujse.1099967
Uğur Akbulut, Zafer Aslan
{"title":"İleri Veri İşlem Yöntemleri İle Su Kaynaklarının Kullanımı Ve Planlanmasının Optimizasyonu","authors":"Uğur Akbulut, Zafer Aslan","doi":"10.29002/asujse.1099967","DOIUrl":"https://doi.org/10.29002/asujse.1099967","url":null,"abstract":"Canlı yaşamının devam etmesi için gerekli olan en temel maddelerden biri sudur. Gelecekte ve günümüzde nüfus artışına yanıt verebilecek temiz su kaynaklarının korunması ve geliştirilmesi, gerekliliği büyük önem arz etmektedir. Su insanoğlunun enerji ihtiyacını karşılayan ve hayatta kalmasını sağlayan en temel kaynaklardan birisidir. Mevcut su potansiyelinin tasarruflu kullanılması su ve kullanımının verimli hale getirilmesi gerekmektedir. Nehir akım debilerinin zaman serisi kullanılarak ileriye dönük su potansiyeli tahmini yapılabilmektedir. Akım gözlem istasyonlarında günlük ölçümler yapılmaktadır. Bu verilere dayalı olarak, matematik modellerle ve makine öğrenmesi sistemleri ile tahmin çalışmaları yürütülmektedir. Bu çalışmada inceleme bölgesi olarak seçilen Çatalca Istıranca Nehrine ait günlük ve aylık ortalama akım, bölgeye ait günlük toplam yağış miktarı ve günlük ortalama hava sıcaklık değerleri göz önüne alınmıştır. İstatistiksel olarak 2004-2020 inceleme dönemine ait, günlük ortalama akım 2,97 m3/sn, günlük toplam yağış 2,73 mm=kg/m2 ve ortalama hava sıcaklığı değeri 12,57 °C olarak saptanmıştır. Makine öğrenme yöntemlerinden Lineer Regresyon, Destek Vektör, Karar Ağacı, Rasgele Orman, Extra Trees, Dalgacık yöntemleri kullanarak akarsu akış miktarının zamanla değişimi tahmin edilmiştir. Uygulanan modellerin başarı performansları karşılaştırılmış, akış miktarı tahmininde Extra Trees (%91,0) ve Rasgele Orman (%89,2) diğer yöntemlere göre daha yüksek bulunmuştur.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90564002","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
Eigenvalue Buckling Analysis of Beams with Different Width and Square Cutout 不同宽度和方形切口梁的特征值屈曲分析
Aksaray University Journal of Science and Engineering Pub Date : 2022-06-06 DOI: 10.29002/asujse.1097633
Savaş Evran, Salih Zeki Yildir
{"title":"Eigenvalue Buckling Analysis of Beams with Different Width and Square Cutout","authors":"Savaş Evran, Salih Zeki Yildir","doi":"10.29002/asujse.1097633","DOIUrl":"https://doi.org/10.29002/asujse.1097633","url":null,"abstract":"In this study, effect of square cutout and beam widths on eigenvalue buckling analysis of beams is evaluated using finite element and Taguchi methods. ANSYS software is used to perform the finite element analyses and the analyses were conducted Taguchi L9 orthogonal array with three control factors. Each control factor has three levels. The first control factor is considered as position of square cutout whereas the second control factor was assumed as beam widths. The influence of levels of the beam widths and square cutouts on responses is determined using analysis of signal-to-noise ratio whereas variance analysis was operated to notice the effect of each control factor on the buckling behavior of the beams. According to results obtained from the study, the buckling value of the beams increase as the square cutout get closer to the free edge. Increase of the beam widths leads to an increase on buckling result of the beams. The effect of beam width on the buckling analysis is higher than square cutout.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82142968","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
Convergence and Stability Analysis of a New Four-Step Fixed-Point Algorithm 一种新的四步不动点算法的收敛性与稳定性分析
Aksaray University Journal of Science and Engineering Pub Date : 2022-04-27 DOI: 10.29002/asujse.1096163
Yunus Atalan, E. Kiliç
{"title":"Convergence and Stability Analysis of a New Four-Step Fixed-Point Algorithm","authors":"Yunus Atalan, E. Kiliç","doi":"10.29002/asujse.1096163","DOIUrl":"https://doi.org/10.29002/asujse.1096163","url":null,"abstract":"The concept of stability is studied on many different types of mathematical structures. This concept can be thought of as the small changes that will be applied in the structure studied should not disrupt the functioning of this structure. In this context, we performed the convergence and stability analysis of the new four-step iteration algorithm that we defined in this study, under appropriate conditions. In addition, we execute a speed comparison with existing algorithms to prove that the new algorithm is effective and useful, and we gave a numerical example to support our result","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80520068","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
The Role of Silica Nanoparticle in Fingerprint Visualization Studies 纳米二氧化硅在指纹可视化研究中的作用
Aksaray University Journal of Science and Engineering Pub Date : 2022-03-24 DOI: 10.29002/asujse.1035557
Elif Çetli̇, Vahdet Özkoçak, D. Tatar
{"title":"The Role of Silica Nanoparticle in Fingerprint Visualization Studies","authors":"Elif Çetli̇, Vahdet Özkoçak, D. Tatar","doi":"10.29002/asujse.1035557","DOIUrl":"https://doi.org/10.29002/asujse.1035557","url":null,"abstract":"Fingerprints are the most important evidence that allows the criminal to be profiled in a crime scene investigation. A fingerprint is considered evidence due to its unique characteristics. Fingerprints are not visible and therefore need to be visualized after being recovered from the scene. Many methods are used for visualization purposes. The most commonly used methods are dusting, Ninhydrin, DFO, Super Glue, etc. the methods are not. In addition to these methods, other chemicals, physical and optical methods have recently been uncovered. Due to technological developments affecting the field of Forensic Sciences, new dimensions have also been introduced to fingerprint studies. The use of nanoparticles has gained momentum, especially in fingerprint visualization studies. In the use of nanoparticles, silica nanoparticles are used in studies. Objective: this study, it was aimed to determine the level of use of silica nanoparticles in fingerprint visualization studies. Based on the data obtained for this purpose, which silica nanoparticle is most used, which method is most used in silica nanoparticle synthesis, what are the dimensions of the resulting molecules, which technique is most preferred for visualization, etc. it is aimed to provide researchers with up-to-date information by determining the parameters? Method: In this study, the systematic literature review was preferred to collect research data. The level of use of silica nanoparticles has been investigated in fingerprint visualization studies between 2016 and 2020. Data collection was obtained through scientific studies. Parameters such as silica nanoparticle molecules, synthesis methods","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74096483","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
A Fuzzy Approach for Generalized Project Selection and Scheduling Problem with Resource Management 资源管理下广义项目选择与调度问题的模糊方法
Aksaray University Journal of Science and Engineering Pub Date : 2022-02-25 DOI: 10.29002/asujse.950133
G. Bektur
{"title":"A Fuzzy Approach for Generalized Project Selection and Scheduling Problem with Resource Management","authors":"G. Bektur","doi":"10.29002/asujse.950133","DOIUrl":"https://doi.org/10.29002/asujse.950133","url":null,"abstract":"","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75951640","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
Quantum Mechanics Approach For Appropirately Chosen Hamiltonian 适当选择哈密顿量的量子力学方法
Aksaray University Journal of Science and Engineering Pub Date : 2022-01-26 DOI: 10.29002/asujse.999472
Ahmet Kaya
{"title":"Quantum Mechanics Approach For Appropirately Chosen Hamiltonian","authors":"Ahmet Kaya","doi":"10.29002/asujse.999472","DOIUrl":"https://doi.org/10.29002/asujse.999472","url":null,"abstract":"","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86527412","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
Marmara Denizi Yüzeyinden Toplanan Müsilaj Biyokütlesinin Suyunun Giderilmesi: Koagülasyon ve Santrifüj Proseslerinin Optimizasyonu
Aksaray University Journal of Science and Engineering Pub Date : 2021-12-10 DOI: 10.29002/asujse.1002134
Nevim Genç, Elif Durna, Fatma Ece Sayin
{"title":"Marmara Denizi Yüzeyinden Toplanan Müsilaj Biyokütlesinin Suyunun Giderilmesi: Koagülasyon ve Santrifüj Proseslerinin Optimizasyonu","authors":"Nevim Genç, Elif Durna, Fatma Ece Sayin","doi":"10.29002/asujse.1002134","DOIUrl":"https://doi.org/10.29002/asujse.1002134","url":null,"abstract":"","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78795882","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
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