Gazi University Journal of Science Part A: Engineering and Innovation最新文献_第8页

Engineering Properties of Lightweight Mortars Containing Wood Waste Particles 含木屑颗粒轻质砂浆的工程性能

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-12-31 DOI: 10.54287/gujsa.1193927

N. Kockal, erdem camurlu

引用次数: 0

Sample Size Estimation of Nonparametric Tests with Ordered Alternatives for Longitudinal Data in Randomized Complete Block Designs 随机完全块设计中纵向数据有序替代非参数检验的样本量估计

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-12-31 DOI: 10.54287/gujsa.1130039

M. Bahçecitapar, Hatice Tul Kubra Akdur

{"title":"Sample Size Estimation of Nonparametric Tests with Ordered Alternatives for Longitudinal Data in Randomized Complete Block Designs","authors":"M. Bahçecitapar, Hatice Tul Kubra Akdur","doi":"10.54287/gujsa.1130039","DOIUrl":"https://doi.org/10.54287/gujsa.1130039","url":null,"abstract":"Longitudinal studies involve repeated measurements from the same subjects or blocks over short or an extended periods of time. In longitudinal studies, usually the most important step is to decide how many experimental units to use. There are no closed form equations for determining sample size in many complex designs. Monte Carlo simulation method is an effective tool in complex designs to estimate power or sample size. This paper introduces estimating sample size for the number of blocks or experimental units based on a fixed number of treatment/time in randomized complete block designs with correlated longitudinal responses analyzed by nonparametric tests against ordered alternatives. The sample size of subjects is estimated for each test statistics by taking into account the autocorrelation structure of the error terms which form either a stationary first-order moving average or autoregressive with non-normally distributed white noise terms. An extensive sample size/power comparison among the recently proposed Modification of S test and the other two well-known nonparametric tests such as the Page test and the generalized Jonckheere test against ordered alternatives in randomized complete block designs is carried out under stationary first-order autoregressive and moving average error structures with white noise terms distributed with either Laplace or Weibull distributions. Simulation study indicates that the distribution of white noise and the error structure have an important role on sample size estimation for each nonparametric test. The Modification of S test requires large sample size in contrast to other tests for longitudinal data in the specified simulation setting.","PeriodicalId":134301,"journal":{"name":"Gazi University Journal of Science Part A: Engineering and Innovation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128982847","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

Certain Finite Sums Pertaining to Leibnitz, Harmonic and Other Special Numbers 关于莱布尼兹数、调和数和其他特殊数的有限和

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-30 DOI: 10.54287/gujsa.1134534

Neslihan Kilar

引用次数: 0

Adaptation of the Kantorovich Type Integral to the Dunkl Operator Kantorovich型积分对Dunkl算子的自适应

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-30 DOI: 10.54287/gujsa.1148199

Gürhan Içöz, Esma Gökmen

引用次数: 0

The Production of Organic Photodetectors and Determination of Electrical Properties for Optical Sensor Applications 生产有机光电探测器并确定光传感器应用的电气特性

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-30 DOI: 10.54287/gujsa.1141142

S. Karadeniz, B. Barış, Hande Karadeni̇z, Murat Yildirim

引用次数: 1

Detecting Turkish Fake News Via Text Mining to Protect Brand Integrity 通过文本挖掘检测土耳其假新闻以保护品牌完整性

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-30 DOI: 10.54287/gujsa.1170640

Ozge Doguc

引用次数: 0

Investigation of Organic and Inorganic Contaminants in Water Sources around Elbistan Lignite Beds 鄂尔比斯坦褐煤床周边水源中有机和无机污染物的调查

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-30 DOI: 10.54287/gujsa.1152444

Ayça DOĞRUL SELVER, Y. Uras

{"title":"Investigation of Organic and Inorganic Contaminants in Water Sources around Elbistan Lignite Beds","authors":"Ayça DOĞRUL SELVER, Y. Uras","doi":"10.54287/gujsa.1152444","DOIUrl":"https://doi.org/10.54287/gujsa.1152444","url":null,"abstract":"The household and industrial use, as well as mining of coal, pose various environmental and health risks including lung and kidney diseases such as Balkan Endemic Nephropathy (BEN). BEN is a kidney disease and it is geographically confined to Balkan countries where extensive lignite deposits are located. The most accepted cause of BEN is the use of untreated waters contaminated by lignite-derived organic contaminants. Afşin-Elbistan basin contains approximately 50 % of the lignite reserves of Turkey which makes it an ideal location for the current study. In this work, water samples were taken from 10 different locations in the Afşin-Elbistan basin and they were analyzed for organic and inorganic contaminants. Results showed that none of the water samples were contaminated with inorganic contaminants and indeed met the Turkish drinking water standards. GC-MS analyses of the water samples revealed similar chromatograms. Briefly, all the water samples have similar organic compound types such as n-alkanes, chlorophyll-derived phytols, and plant- and animal-derived acids (i.e. palmitic acid). On the other hand, none of the samples were contaminated with carcinogenic and/or nephrotoxic organic compounds such as polyaromatic hydrocarbons and aromatic amines, which is contrary to many, but not all of the previous works conducted in Balkan countries. All these results may indicate that the influence of coal deposits on the groundwaters is minimal.","PeriodicalId":134301,"journal":{"name":"Gazi University Journal of Science Part A: Engineering and Innovation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129160965","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

Molecular Docking, HOMO-LUMO, Quantum Chemical Computation and Bioactivity Analysis of vic-Dioxim Derivatives Bearing Hydrazone Group Ligand and Their NiII and CuII Complexes 含腙基配体的维二肟衍生物及其NiII和CuII配合物的分子对接、HOMO-LUMO、量子化学计算和生物活性分析

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-29 DOI: 10.54287/gujsa.1160449

Ş. Çalişkan, Onur Genç, Fatma Erol, Nursabah Sarıkavaklı

{"title":"Molecular Docking, HOMO-LUMO, Quantum Chemical Computation and Bioactivity Analysis of vic-Dioxim Derivatives Bearing Hydrazone Group Ligand and Their NiII and CuII Complexes","authors":"Ş. Çalişkan, Onur Genç, Fatma Erol, Nursabah Sarıkavaklı","doi":"10.54287/gujsa.1160449","DOIUrl":"https://doi.org/10.54287/gujsa.1160449","url":null,"abstract":"Molecular docking process was performed to investigate the interactions between the synthesized compounds and human epidermal growth factor protein kinase domain EGFR (PDB ID:1M17) and cyclin-dependent kinase-2 CDK2 (PDB ID:3IG7) proteins. HOMO LUMO orbital energy analysis, quantum chemical calculations were made and the bioactivity parameters of the compounds were evaluated. NiII and CuII complexes of the L1H2 L2H2 and L3H2, ligands showed higher binding affinity to EGFR and CDK2. Especially, [Cu(L1H)2] and [Cu(L2H)2] complexes can be suggested as hit compounds against CDK2 and EGFR, respectively. These were supported by the inhibition constant values which were the lowest when compared to others. L1H2 L2H2 and L3H2, ligands had the lowest binding energy values when compared to metal complexes. Also, [Cu(L2H)2] complex had a high binding energy value against EGFR. [Ni(L2H)2] and [Cu(L2H)2] complexes with EGFR had the highest LE and FQ values and these were found to be in the recommended range. Furthermore, [Cu(L3H)2] had an acceptable FQ value however its LE value was out of range. Besides, [Cu(L2H)2] had a potent and sufficient electrophile ability (acceptor) among other compounds. In conclusion, these compounds may be suitable compounds for further analysis in anti-cancer drug development with low toxic and targeted properties.","PeriodicalId":134301,"journal":{"name":"Gazi University Journal of Science Part A: Engineering and Innovation","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126346432","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

Evaluation of Electromagnetic Field Levels and Student Exposure at Aydın Adnan Menderes University Central Campus Aydın Adnan Menderes大学中央校区电磁场水平与学生暴露评估

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-29 DOI: 10.54287/gujsa.1151793

Ş. Çalişkan, M. A. Kılıç, Didem Bakay Ilhan, Mehran Aksel, Onur Genç, M. Bilgin

{"title":"Evaluation of Electromagnetic Field Levels and Student Exposure at Aydın Adnan Menderes University Central Campus","authors":"Ş. Çalişkan, M. A. Kılıç, Didem Bakay Ilhan, Mehran Aksel, Onur Genç, M. Bilgin","doi":"10.54287/gujsa.1151793","DOIUrl":"https://doi.org/10.54287/gujsa.1151793","url":null,"abstract":"With the effect of developing technology, humanity is constantly exposed to more electromagnetic fields. Regional studies are gaining importance for determining the possible problems. In this study, extremely low-frequency electromagnetic field (ELF-EMF) measurements were carried out in Aydın Adnan Menderes University Central Campus in areas where university students are frequently found, at 25 randomly selected points, in the region where high voltage lines pass and around transformers, and to evaluate the awareness of university students about the ELF-EMF they are exposed to. For this purpose, the necessary magnetic field and electric field strength measurements were made and a questionnaire was applied to determine the awareness level of the students. Results were evaluated by comparing them with the ICNIRP limit values. Accordingly, it has been concluded that Aydın Adnan Menderes University Central Campus can be accepted as a relatively safe area since electromagnetic field exposure values are within the ICNIRP safe limit values. In addition, as a result of the questionnaire, it was determined that the young people were conscious to a certain extent about ELF-EMF, but they did not pay attention to protect themselves against the possible effects of ELF-EMF. It is important to make the necessary initiatives in order to raise awareness of young people on this issue.","PeriodicalId":134301,"journal":{"name":"Gazi University Journal of Science Part A: Engineering and Innovation","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128520743","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

Effects of Electric Vehicles and Charging Stations on Microgrid Power Quality 电动汽车和充电站对微电网电能质量的影响

Gazi University Journal of Science Part A: Engineering and Innovation Pub Date : 2022-09-28 DOI: 10.54287/gujsa.1153313

Süleyman Adak, Hasan Cangi, Rıdvan Kaya, A. Yilmaz

{"title":"Effects of Electric Vehicles and Charging Stations on Microgrid Power Quality","authors":"Süleyman Adak, Hasan Cangi, Rıdvan Kaya, A. Yilmaz","doi":"10.54287/gujsa.1153313","DOIUrl":"https://doi.org/10.54287/gujsa.1153313","url":null,"abstract":"In this study, integration of renewable energy sources and Electric Vehicles (EVs) into a micro-grid was modeled and analyzed. The microgrid is divided into four important parts; a diesel generator, acting as the base power generator; a photovoltaic (PV) farm combined with a wind farm, to produce electrical energy; a vehicle to grid (V2G) system installed next to the last part of the microgrid which is the load of the microgrid. The size of the microgrid represents approximately a community of a thousand households during a low consumption day in spring or fall. There are 100 electric vehicles in the base model which means that there is a 1:10 ratio between the cars and the households. This is a possible scenario in a foreseeable future. The continuous increase in their rate in energy production makes micro-grids important. Microgrids can be designed to meet the energy needs of hospitals, universities or charging stations of electric cars, as well as to meet the energy needs of a district, village or industrial site. Charging stations are needed to charge the electric vehicle battery. In this study, the effects of electric vehicles on the microgrid network are analyzed. Electric vehicles have non-linear circuit elements in their structures. Therefore, they are a source of harmonic current in the microgrid. They negatively affect the power quality of the microgrid. The battery in electric vehicles is charged with direct current. The alternating current from the microgrid needs to be converted to direct current.","PeriodicalId":134301,"journal":{"name":"Gazi University Journal of Science Part A: Engineering and Innovation","volume":"11 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122957471","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