gazi university journal of science最新文献_第4页

Smart Bin and IoT: A Sustainable Future for Waste Management System in Nigeria 智能垃圾箱和物联网:尼日利亚废物管理系统的可持续未来

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gazi university journal of science Pub Date : 2023-05-22 DOI: 10.35378/gujs.1254271

A. Okubanjo, B. Odufuwa, A. Okandeji, E. Daniel

{"title":"Smart Bin and IoT: A Sustainable Future for Waste Management System in Nigeria","authors":"A. Okubanjo, B. Odufuwa, A. Okandeji, E. Daniel","doi":"10.35378/gujs.1254271","DOIUrl":"https://doi.org/10.35378/gujs.1254271","url":null,"abstract":"As waste production is becoming more widely recognized as a significant issue, particularly in developing nations, rising food consumption and population growth have caused environmental degradation and health crises. Nigeria's waste collection and disposal problems are commonly associated with environmental pollution and health crises. Consequently, throwing garbage on roads during environmental sanitation, is a typical method of waste disposal, leading to large piles of refuse along the roadside, which hinders the nation's beauty. Therefore, for Nigeria's waste management system to be effective, sustainable smart bins with efficient Internet of Things (IoT) applications must be quickly adopted to create a green, clean atmosphere within cities. Smart bins with integrated IoT can provide a sustainable future for cities' waste management.. This model seeks to develop a low-cost, intelligent waste bin system with IoT technology. Sensors and data sharing over a Wi-Fi network, allow for remote control of the waste bin, leading to improved optimization of the bin's level of waste. The economic benefits of this IoT-based system include remote access for efficient level control, lower labour costs, improved time and energy efficiency, and reduced congestion in waste bins.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49075808","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

Theoretical Exergoenvironmental Analysis of a Tunnel Furnace and Drying System in a Brick Production 某砖厂隧道炉及干燥系统的理论工作环境分析

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gazi university journal of science Pub Date : 2023-05-16 DOI: 10.35378/gujs.1052416

Gurhan Tahtali, H. Olgun, M. Günes, A. Hepbasli

引用次数: 0

The Impact of the COVID-19 Pandemic on Online Grocery Supply Chain Management: A Case Study in Istanbul 2019冠状病毒病大流行对在线杂货供应链管理的影响:以伊斯坦布尔为例

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gazi university journal of science Pub Date : 2023-05-15 DOI: 10.35378/gujs.1025914

Sonya Javadi̇, Ali İhsan Özer, Olcay Keten, Remziye Zeynep Alkan

{"title":"The Impact of the COVID-19 Pandemic on Online Grocery Supply Chain Management: A Case Study in Istanbul","authors":"Sonya Javadi̇, Ali İhsan Özer, Olcay Keten, Remziye Zeynep Alkan","doi":"10.35378/gujs.1025914","DOIUrl":"https://doi.org/10.35378/gujs.1025914","url":null,"abstract":"The COVID-19 pandemic has already crippled normal life all over the world. Its negative effect not only changed the human health system tragically but also disrupted the global economic system. One result of such negative disruption was on the food supply chain. The strict lockdown has suspended the manufacturing and logistic activities and therefore, the consumers experienced unimaginable chose on the grocery markets which has never faced before. Along with this mess, the shopping behavior of the consumers has remarkably changed compared to pre-pandemic. To meet this new demand pattern, many large convenience stores and small retailers tried to adapt to the new normal. While a standard way to manage the grocery supply chain before the pandemic was the offline system, after the pandemic, the online service got tremendous attention from the consumers. In this study, the online grocery supply chain management during the Covid-19 in Istanbul is considered. The purpose is to find out how more efficient online services can be provided during the pandemic. To do so, first, some questions related to online grocery shopping were asked and three major grocery retailers in Istanbul which have provided online services were taken. Then, a survey was conducted to understand the consumer’s experience with respect to online shopping at these stores. Following that, the performances of the companies and their SWOT analyses were discussed. Finally, some strategic recommendations were given to the companies to manage their online services throughout the pandemic and post-pandemic.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45941430","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

Nonlinear Behavior of the Concrete Core of the Diagonally Reinforced Coupling Beams 斜向配筋耦合梁混凝土芯的非线性行为

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gazi university journal of science Pub Date : 2023-05-14 DOI: 10.35378/gujs.1233545

Saeid Foroughi, Bahadır Yüksel

{"title":"Nonlinear Behavior of the Concrete Core of the Diagonally Reinforced Coupling Beams","authors":"Saeid Foroughi, Bahadır Yüksel","doi":"10.35378/gujs.1233545","DOIUrl":"https://doi.org/10.35378/gujs.1233545","url":null,"abstract":"Coupled shear walls with coupling beams are constructed because of openings such as doors, windows, or other installations that are left behind due to functional reasons in shear walls. The seismic behavior of coupled shear walls with coupling beams depends on the structural performance of the coupling beams. In coupling beams having a ratio of span-to-depth less than two, shear fracture occurs rather than flexural fracture. In order to meet the shear force and the bending moment formed by the coupling beams, diagonal bundles are used in the coupling beams. Diagonal reinforced coupling beams are generally preferred because diagonal reinforced coupling beams exhibit better behavior than conventional reinforced coupling beams. The diagonal reinforcement bundles have to be confined by transverse reinforcements prescribed in the codes. Confined concrete in the diagonal reinforcement bundles has stress-strain characteristics that are distinctly different from those of plain concrete. The effects of longitudinal and transverse reinforcement ratios on the stress-strain behavior of confined concrete inside the diagonal reinforcement bundles were investigated. Fifty-four reinforced concrete coupling beams with different confining parameters of the diagonal reinforcement bundles and different variables were analyzed using the program. It was demonstrated that the strength and the maximum strain of the concrete inside the diagonal reinforcement bundles increase with the reinforcement ratio of the confinement reinforcement. The increase in the diameter of the transverse reinforcement and the decrease in the transverse reinforcement spacing in the diagonal bundles, increase the confining effect in the concrete sections, increasing the ductility and strength, and has a significant effect on the seismic behavior of the coupling beams.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42692027","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

Exponential Function-Based Similarity Measures for q-Rung Linear Diophantine Fuzzy Sets and Their Application to Clustering Problem 基于指数函数的q-Rung线性丢番图模糊集相似性测度及其在聚类问题中的应用

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gazi university journal of science Pub Date : 2023-05-05 DOI: 10.35378/gujs.1013358

S. Petchimuthu, Hüseyin Kamacı

引用次数: 0

Developed ABCLASS-Miner Classification Algorithm Based Rule Extraction for Denim Fabrics 开发了基于ABCLASS Miner分类算法的牛仔织物规则提取

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gazi university journal of science Pub Date : 2023-05-03 DOI: 10.35378/gujs.1185130

Gözde Katircioğlu, Emel Kizilkaya Aydoğan, Esra Akgul, Yılmaz Delice

{"title":"Developed ABCLASS-Miner Classification Algorithm Based Rule Extraction for Denim Fabrics","authors":"Gözde Katircioğlu, Emel Kizilkaya Aydoğan, Esra Akgul, Yılmaz Delice","doi":"10.35378/gujs.1185130","DOIUrl":"https://doi.org/10.35378/gujs.1185130","url":null,"abstract":"Obtaining and storing large amounts of data have become easier with the rapidly developing information technologies (IT). However, the data generated and collected, which are irrelevant in and of themselves, become useful only when they are analyzed for a specific reason. Data mining may transform raw data into useful information. In the present study, classification and analysis of denim fabric quality characteristics according to denim fabric production parameters were carried out. The present study proposes a new classification rule inference algorithm. The suggested approach is mostly based on Artificial Bee Colony Optimization (ABC), a swarm intelligence meta-heuristic. In each step of the algorithm, there are two phases called the employed bee phase and the onlooker bee phase. This algorithm has been compared with the classification algorithms in the related literature. This proposed algorithm is a new data mining tool that intelligently combines various metaheuristic and neural networks and can generate classification rules. The results indicate that the proposed data mining algorithms may be highly useful in determining weight and width in denim fabric manufacture.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48598620","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 Effects of Rod and Round-Like Nanohydroxyapatites on Allium cepa Root Meristem Cells 棒状和圆形纳米羟基磷灰石对洋葱根干细胞的影响

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gazi university journal of science Pub Date : 2023-04-28 DOI: 10.35378/gujs.1218829

Merve Güneş, B. Yalçın, Ayşen Yağmur Kurşun, Ghada Tagorti, Emre Yavuz, E. Akarsu, N. Kaya, Bülent Kaya

{"title":"The Effects of Rod and Round-Like Nanohydroxyapatites on Allium cepa Root Meristem Cells","authors":"Merve Güneş, B. Yalçın, Ayşen Yağmur Kurşun, Ghada Tagorti, Emre Yavuz, E. Akarsu, N. Kaya, Bülent Kaya","doi":"10.35378/gujs.1218829","DOIUrl":"https://doi.org/10.35378/gujs.1218829","url":null,"abstract":"Biomaterials are engineering products that are widely used in many medical fields such as orthopaedic applications, facial and maxillofacial surgery, artificial heart parts, metal parts and implantable devices. These materials are widely used in medicine because they are compatible with the organism, are not allergic, and are resistant to physical and chemical factors. Hydroxyapatites are bioactive calcium phosphate ceramics that are compatible with tissues. To increase their bioactivity, nano-sized hydroxyapatite has been produced. Although there are advantages to the use of nanoparticles in the medical field, the potentially toxic effects of these materials on the environment and human health are of concern. It is also one of the topics to be investigated whether the different forms of the same nanoparticle will cause differences in genotoxicity. In this study, the potential genotoxic effects of rod and round forms of nano-sized hydroxyapatites (nHAs) were evaluated in Allium cepa Single Cell Gel Electrophoresis (COMET) method. According to the results, the round form of nHA in the A. cepa meristem root tip cells caused statistically significant genotoxicity at 25 ppm concentration in terms of tail density and tail moment. This study showed small-sized-nanohydroxyapatite-induced genotoxicity and cell death in A. cepa. This study has shown that the physical properties of nanoparticles affect potential toxicity mechanisms.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46673680","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

Lengthwise Fracture Analysis of Inhomogeneous Viscoelastic Cantilever Beam Subjected to Sinusoidal Strains 正弦应变作用下非均匀粘弹性悬臂梁纵向断裂分析

gazi university journal of science Pub Date : 2023-04-25 DOI: 10.35378/gujs.1062749

Victor RİZOV

{"title":"Lengthwise Fracture Analysis of Inhomogeneous Viscoelastic Cantilever Beam Subjected to Sinusoidal Strains","authors":"Victor RİZOV","doi":"10.35378/gujs.1062749","DOIUrl":"https://doi.org/10.35378/gujs.1062749","url":null,"abstract":"This paper describes an analysis of lengthwise fracture in a viscoelastic inhomogeneous cantilever beam configuration under strain that is a sinusoidal function of time. The mechanical behaviour of the beam is treated by a viscoelastic model having two linear springs and a linear dashpot. The beam is continuously inhomogeneous along its thickness. Therefore, the modulii of elasticity of the springs and the coefficient of viscosity of the dashpot vary smoothly along the thickness of the beam. The compliance method is applied to derive a solution of the strain energy release rate for the lengthwise crack in the beam structure. The J-integral is used for verification. The stress-strain-time dependence of the viscoelastic model is applied for describing the behavior of the beam when obtaining solutions of the strain energy release rate and the J-integral. Solutions are derived for both positive and negative angle of rotation of the lower crack arm free end (when the angle is positive, the upper crack arm is free of stresses, while at negative angle both crack arms are loaded). The effects of various factors including the sign of the angle of rotation on the strain energy release rate are analyzed.","PeriodicalId":12615,"journal":{"name":"gazi university journal of science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135223036","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

Turbine Type Rotary Wave Energy Converter Performance 涡轮式旋转波浪能转换器性能

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gazi university journal of science Pub Date : 2023-04-24 DOI: 10.35378/gujs.1160148

Perihan Karaköse, A. Koca

引用次数: 0

Use of Doubling Number as an Arithmetic Measure of Plant Cell Growth and Metal-Induced Cell Growth Inhibition 使用倍增数作为植物细胞生长和金属诱导的细胞生长抑制的算术测量

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gazi university journal of science Pub Date : 2023-04-20 DOI: 10.35378/gujs.1244209

M. Metin, T. Kawano

引用次数: 0