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Travelling Wave Solutions for Some Time-Fractional Nonlinear Differential Equations 某些时分数非线性微分方程的游波解法
Pub Date : 2024-02-06 DOI: 10.34248/bsengineering.1413250
Mustafa Ekici
The study employs the potent generalized Kudryashov method to address challenges posed by fractional differential equations in mathematical physics. The primary focus is on deriving new exact solutions for three significant equations: the (3+1)-dimensional time fractional Jimbo-Miwa equation, the (3+1)-dimensional time fractional modified KdV-Zakharov-Kuznetsov equation and the (2+1)-dimensional time fractional Drinfeld-Sokolov-Satsuma-Hirota equation. The versatility and efficacy of the Kudryashov method in addressing complex nonlinear problems establish it as a pivotal component in our research. Specifically, we delineate fractional derivatives within the framework of the conformable fractional derivative, thereby laying a robust foundation for our mathematical inquiries. This paper investigates the efficacy of the generalized Kudryashov method in addressing the intricate challenges posed by fractional differential equations.
该研究采用了强大的广义库德亚绍夫方法来解决数学物理中分式微分方程带来的挑战。主要重点是推导三个重要方程的新精确解:(3+1)维时间分数 Jimbo-Miwa 方程、(3+1)维时间分数修正 KdV-Zakharov-Kuznetsov 方程和(2+1)维时间分数 Drinfeld-Sokolov-Satsuma-Hirota 方程。库德亚绍夫方法在解决复杂非线性问题方面的多功能性和高效性使其成为我们研究的关键组成部分。具体而言,我们在共形分式导数的框架内划分了分式导数,从而为我们的数学探索奠定了坚实的基础。本文研究了广义库德里亚肖夫方法在解决分数微分方程带来的复杂挑战方面的功效。
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引用次数: 0
Determination of the Level of Knowledge of the Technical Staff About Arbitration 确定技术人员对仲裁的了解程度
Pub Date : 2024-02-06 DOI: 10.34248/bsengineering.1394781
Hasan Bakirci, Ayten Canbal
Turkey has become one of the world's leading countries in the construction sector in the international arena. Today, the use of FIDIC and similar standard contracts is increasing in Turkish contractor companies. In parallel with this situation, it also becomes more common to prefer arbitration in the settlement of disputes in the international construction sector. In the literature, there is no actual publication about the knowledge level of technical staff on arbitration. By taking this deficiency into consideration, the purpose of this study is to measure the awareness of the groups working in the construction sector about the possibility of applying to arbitration as a result of the disputes that they encounter, by measuring the arbitration knowledge level of the technical staff. Accordingly, an empirical field work was conducted with a total of 100 (one hundred) technical staff working in the public and private sector transportation projects in Istanbul. The data collection tool that was used in the research is a questionnaire developed by the researchers and consisting of 25 questions. In the survey analysis, the data were analyzed with the SPSS 28 package program. In the study, a reliability test was conducted for each statement and the Mann-Whitney U test was used. As a result of the analysis, it has been determined that 84.4% of the participants do not follow up the actual developments in the field of arbitration in the world and in Turkey, and do not have sufficient knowledge about arbitration. However, it has been determined that the arbitration knowledge level of the participants, who follow up the actual developments in the world and in Turkey and have sufficient knowledge about arbitration, is high. In addition, it has been determined that 93.8% of the participants would like to participate an information training to be held on arbitration. To increase awareness about arbitration, it is necessary to introduce undergraduate-level arbitration courses for technical personnel in engineering and architecture faculties at universities, and to organize periodic in-service training programs by the arbitration centers in our country.
在国际舞台上,土耳其已成为世界领先的建筑业国家之一。如今,土耳其承包商公司越来越多地使用 FIDIC 和类似的标准合同。与此同时,在解决国际建筑领域的争端时,选择仲裁也变得越来越普遍。在文献中,没有关于技术人员仲裁知识水平的实际出版物。考虑到这一不足,本研究的目的是通过测量技术人员的仲裁知识水平,来衡量建筑部门的工作群体对其所遇到的争议申请仲裁的可能性的认识。因此,本研究对伊斯坦布尔公共和私营部门交通项目中的 100 名技术人员进行了实地调查。研究中使用的数据收集工具是研究人员编制的调查问卷,包含 25 个问题。在调查分析中,使用 SPSS 28 软件包对数据进行了分析。在研究中,对每个陈述都进行了可靠性测试,并使用了曼-惠特尼 U 检验。分析结果表明,84.4%的参与者没有关注世界和土耳其仲裁领域的实际发展情况,对仲裁的了解也不够充分。然而,在关注世界和土耳其仲裁领域的实际发展并对仲裁有充分了解的参与者中,仲裁知识水平较高。此外,93.8%的参与者希望参加有关仲裁的信息培训。为了提高人们对仲裁的认识,有必要为大学工程和建筑系的技术人员开设本科层次的仲裁课程,并由我国的仲裁中心定期组织在职培训项目。
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引用次数: 0
Travelling Wave Solutions for Some Time-Fractional Nonlinear Differential Equations 某些时分数非线性微分方程的游波解法
Pub Date : 2024-02-06 DOI: 10.34248/bsengineering.1413250
Mustafa Ekici
The study employs the potent generalized Kudryashov method to address challenges posed by fractional differential equations in mathematical physics. The primary focus is on deriving new exact solutions for three significant equations: the (3+1)-dimensional time fractional Jimbo-Miwa equation, the (3+1)-dimensional time fractional modified KdV-Zakharov-Kuznetsov equation and the (2+1)-dimensional time fractional Drinfeld-Sokolov-Satsuma-Hirota equation. The versatility and efficacy of the Kudryashov method in addressing complex nonlinear problems establish it as a pivotal component in our research. Specifically, we delineate fractional derivatives within the framework of the conformable fractional derivative, thereby laying a robust foundation for our mathematical inquiries. This paper investigates the efficacy of the generalized Kudryashov method in addressing the intricate challenges posed by fractional differential equations.
该研究采用了强大的广义库德亚绍夫方法来解决数学物理中分式微分方程带来的挑战。主要重点是推导三个重要方程的新精确解:(3+1)维时间分数 Jimbo-Miwa 方程、(3+1)维时间分数修正 KdV-Zakharov-Kuznetsov 方程和(2+1)维时间分数 Drinfeld-Sokolov-Satsuma-Hirota 方程。库德亚绍夫方法在解决复杂非线性问题方面的多功能性和高效性使其成为我们研究的关键组成部分。具体而言,我们在共形分式导数的框架内划分了分式导数,从而为我们的数学探索奠定了坚实的基础。本文研究了广义库德里亚肖夫方法在解决分数微分方程带来的复杂挑战方面的功效。
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引用次数: 0
Determination of the Level of Knowledge of the Technical Staff About Arbitration 确定技术人员对仲裁的了解程度
Pub Date : 2024-02-06 DOI: 10.34248/bsengineering.1394781
Hasan Bakirci, Ayten Canbal
Turkey has become one of the world's leading countries in the construction sector in the international arena. Today, the use of FIDIC and similar standard contracts is increasing in Turkish contractor companies. In parallel with this situation, it also becomes more common to prefer arbitration in the settlement of disputes in the international construction sector. In the literature, there is no actual publication about the knowledge level of technical staff on arbitration. By taking this deficiency into consideration, the purpose of this study is to measure the awareness of the groups working in the construction sector about the possibility of applying to arbitration as a result of the disputes that they encounter, by measuring the arbitration knowledge level of the technical staff. Accordingly, an empirical field work was conducted with a total of 100 (one hundred) technical staff working in the public and private sector transportation projects in Istanbul. The data collection tool that was used in the research is a questionnaire developed by the researchers and consisting of 25 questions. In the survey analysis, the data were analyzed with the SPSS 28 package program. In the study, a reliability test was conducted for each statement and the Mann-Whitney U test was used. As a result of the analysis, it has been determined that 84.4% of the participants do not follow up the actual developments in the field of arbitration in the world and in Turkey, and do not have sufficient knowledge about arbitration. However, it has been determined that the arbitration knowledge level of the participants, who follow up the actual developments in the world and in Turkey and have sufficient knowledge about arbitration, is high. In addition, it has been determined that 93.8% of the participants would like to participate an information training to be held on arbitration. To increase awareness about arbitration, it is necessary to introduce undergraduate-level arbitration courses for technical personnel in engineering and architecture faculties at universities, and to organize periodic in-service training programs by the arbitration centers in our country.
在国际舞台上,土耳其已成为世界领先的建筑业国家之一。如今,土耳其承包商公司越来越多地使用 FIDIC 和类似的标准合同。与此同时,在解决国际建筑领域的争端时,选择仲裁也变得越来越普遍。在文献中,没有关于技术人员仲裁知识水平的实际出版物。考虑到这一不足,本研究的目的是通过测量技术人员的仲裁知识水平,来衡量建筑部门的工作群体对其所遇到的争议申请仲裁的可能性的认识。因此,本研究对伊斯坦布尔公共和私营部门交通项目中的 100 名技术人员进行了实地调查。研究中使用的数据收集工具是研究人员编制的调查问卷,包含 25 个问题。在调查分析中,使用 SPSS 28 软件包对数据进行了分析。在研究中,对每个陈述都进行了可靠性测试,并使用了曼-惠特尼 U 检验。分析结果表明,84.4%的参与者没有关注世界和土耳其仲裁领域的实际发展情况,对仲裁的了解也不够充分。然而,在关注世界和土耳其仲裁领域的实际发展并对仲裁有充分了解的参与者中,仲裁知识水平较高。此外,93.8%的参与者希望参加有关仲裁的信息培训。为了提高人们对仲裁的认识,有必要为大学工程和建筑系的技术人员开设本科层次的仲裁课程,并由我国的仲裁中心定期组织在职培训项目。
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引用次数: 0
Voxel-Based Morphometry of Optimistic and Pessimistic Brains: A Detailed Study Focusing on Age Range and Gender 基于体素的乐观和悲观大脑形态测量:以年龄段和性别为重点的详细研究
Pub Date : 2024-02-02 DOI: 10.34248/bsengineering.1398432
Pınar Ozel
The aim of the present study was to investigate brain volumes in pessimist and optimist participants. Therefore, in the present voxel-based morphometry research, it is investigated whether optimism has a corresponding counterpart in the structure of the brain. Thirty-two participants were screened via a publicly available dataset to test for this. The participants are divided into two groups: low optimists and high optimists, each with sixteen people. In comparison, a significant difference (p
本研究的目的是调查悲观主义者和乐观主义者的脑容量。因此,在本项基于体素形态计量学的研究中,要调查的是乐观主义是否在大脑结构中也有相应的对应物。我们通过一个公开的数据集筛选出 32 名参与者来测试这一点。参与者分为两组:低乐观主义者和高乐观主义者,每组十六人。相比之下,低乐观者和高乐观者的大脑结构存在明显差异(p
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引用次数: 0
Voxel-Based Morphometry of Optimistic and Pessimistic Brains: A Detailed Study Focusing on Age Range and Gender 基于体素的乐观和悲观大脑形态测量:以年龄段和性别为重点的详细研究
Pub Date : 2024-02-02 DOI: 10.34248/bsengineering.1398432
Pınar Ozel
The aim of the present study was to investigate brain volumes in pessimist and optimist participants. Therefore, in the present voxel-based morphometry research, it is investigated whether optimism has a corresponding counterpart in the structure of the brain. Thirty-two participants were screened via a publicly available dataset to test for this. The participants are divided into two groups: low optimists and high optimists, each with sixteen people. In comparison, a significant difference (p
本研究的目的是调查悲观主义者和乐观主义者的脑容量。因此,在本项基于体素形态计量学的研究中,要调查的是乐观主义是否在大脑结构中也有相应的对应物。我们通过一个公开的数据集筛选出 32 名参与者来测试这一点。参与者分为两组:低乐观主义者和高乐观主义者,每组十六人。相比之下,低乐观者和高乐观者的大脑结构存在明显差异(p
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引用次数: 0
Çok Kriterli Karar Verme Metodu AHP ve CBS Teknolojisi Kullanılarak Sera Yer Seçimi: Aksu İlçesi Örneği 利用多标准决策方法 AHP 和 GIS 技术选择温室地点:阿克苏地区案例
Pub Date : 2024-01-20 DOI: 10.34248/bsengineering.1399640
Eda Bostanci, Önder Kabaş, E. Aksoy
Yer seçim birden çok faktörün ele alındığı kompleks yapısı olan bir işlemdir. Bu çalışmanın amacı, uzaktan algılama (UA), coğrafi bilgi sistemleri (CBS) ve çok kriterli karar (ÇKK) metotu kullanılarak sera için uygun alanların belirlenmesidir. Çalışma alanı Türkiye’nin seracılık faaliyetlerinin yoğun olduğu bölge olması nedeniyle Antalya ili, Aksu ilçesi seçilmiştir. UA ve CBS veri toplama metotları ile on iki mevcut kriter (eğim, bakı, suya, yola ve nüfus yoğunluğuna yakınlık, toprak özellikleri, nem, yağış, sıcaklık, güneşlenme şiddeti, güneşlenme radyasyonu ve rüzgâr şiddeti), sera uygun alan seçimini gerçekleştirmek için kullanılmıştır. Kriterlerin ağırlıkları, analitik hiyerarşi süreci (AHP) matrisi ile elde edilmiştir. Tutarlılık oranı (CR) ve tutarlılık endeksi(CI) sırasıyla 0,067 ve 0,099 olarak elde edilmiştir. Çalışma alanı içinde farklı yasal ve yönetmelikler gereği seçim dışında kalması gereken alanlar çalışma alanından maskeleme metotu ile dışarı çıkarılmıştır. Çalışma alanı uygun olmayan, az uygun, orta uygun, uygun, en uygun şeklinde beş sınıfa ayrılmıştır. Bu alanlar sırasıyla 136,51 ha, 751,61 ha, 155,04 ha, 216,41 ha, 411,71 ha’dir. Sera için En Uygun Alan, çalışma alanin %24,63’ünü kapsamaktadır. Çalışma metotu ile belirlenen sera yer seçimi ile yatırımcının altyapı, enerji ve pazar gibi zorunlu giderlerinin minimum indirilmesi gerçekleştirilebilmektedir. Ayrıca yer belirleme için gerekl olan veriler gelecekte güncellenebilir özelikte olması önerilen modelin gelecekte kullanılabilirliğini ve gelişebilirliğini artırmaktadır.
选址是一个复杂的过程,需要考虑多种因素。本研究旨在利用遥感 (RS)、地理信息系统 (GIS) 和多标准决策 (MCDM) 方法确定温室的合适区域。选择安塔利亚省的阿克苏地区作为研究区域,因为该地区是土耳其温室活动密集的地区。利用现有的 12 项标准(坡度、地势、靠近水源、道路和人口密度、土壤特性、湿度、降水量、温度、日照强度、日照辐射和风力强度),通过 UA 和 GIS 数据收集方法选择适合建造温室的地区。标准的权重是通过层次分析法(AHP)矩阵得到的。一致性比率(CR)和一致性指数(CI)分别为 0.067 和 0.099。研究区域内因不同法律法规要求而应排除在选择范围之外的区域,通过屏蔽法排除在研究区域之外。研究区域被划分为不适宜、较不适宜、中等适宜、适宜和最适宜五个等级。这些区域的面积分别为 136,51 公顷、751,61 公顷、155,04 公顷、216,41 公顷和 411,71 公顷。最适合建造温室的区域占研究区域的 24.63%。根据研究方法确定的温室选址,可以最大限度地减少投资者的强制性支出,如基础设施、能源和市场。此外,确定选址所需的数据可在未来更新,这也提高了所提模型在未来的可用性和可发展性。
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引用次数: 0
Valorisation of the Effect of Waste Aluminum Sawdust on Concrete: Durability Characteristics and Environmental Impacts 废铝锯屑对混凝土影响的价值评估:耐久性特征和环境影响
Pub Date : 2024-01-15 DOI: 10.34248/bsengineering.1337117
Tuba Demir, Bahar Demi̇rel, Melek Öztürk
The aim of this study is to examine the effect of replacing waste aluminum sawdust (AS) with fine aggregate on the strength and durability properties of concrete. For this, concrete mixtures with a cement dosage of 400 kg/m3, water/cement (W/C) ratio of 0.40-0.50-0.60 were prepared. Aluminum sawdust obtained from Elazığ industrial site was added to the concrete mixtures by replacing 0%, 0.5% and 1% fine aggregate by volume. After curing in the curing pool for 28 days, the produced concrete samples were placed in the carbonation tank and exposed to the accelerated carbonation test in three different time periods as the 1st, 3rd and 7th days. Tests of compressive strength, splitting tensile strength, ultrasound transmission velocity, porosity and carbonation depth were performed on concrete samples before and after carbonation. The samples that were exposed to carbonation were compared with the samples that did not undergo carbonation. In addition, the microstructure of AS concrete was investigated using scanning electron microscopic images (SEM). In the microscopic images, larger cracks, openings and interfacial voids were observed in the concrete matrix with the addition of AS. However, due to the formation of ettringite in these gaps and cracks after carbonation, the cavities became smaller. As a result of the experiments, it was observed that the optimum W/C ratio was 40% and the AS amount was 0.5% in the use of AS in concrete. In addition, it was found that the carbonation effect improves the compressive and splitting tensile strength and increases the ultrasound transmission rate. Finally, life cycle assessment (LCA) was conducted to evaluate the environmental impacts of the prepared concrete samples. Considering the large amount of natural aggregate consumption, it is thought that the use of waste materials in concrete will provide environmental and economic benefits.
本研究旨在探讨用细骨料替代废铝锯屑(AS)对混凝土强度和耐久性能的影响。为此,制备了水泥用量为 400 kg/m3、水灰比为 0.40-0.50-0.60 的混凝土混合物。在混凝土混合物中添加了从埃拉泽(Elazığ)工业区获得的铝锯屑,按体积分别取代 0%、0.5% 和 1%的细骨料。在养护池中养护 28 天后,将制作好的混凝土样品放入碳化池中,在第 1 天、第 3 天和第 7 天三个不同时间段内进行加速碳化试验。对碳化前后的混凝土样品进行了抗压强度、劈裂拉伸强度、超声波传输速度、孔隙率和碳化深度测试。经过碳化的样品与未经过碳化的样品进行了比较。此外,还使用扫描电子显微镜图像(SEM)研究了 AS 混凝土的微观结构。在显微图像中,可以观察到添加了 AS 的混凝土基体中出现了较大的裂缝、开口和界面空隙。然而,由于碳化后在这些缝隙和裂缝中形成了乙长石,空洞变小了。实验结果表明,在混凝土中使用 AS 时,最佳 W/C 比为 40%,AS 用量为 0.5%。此外,实验还发现碳化效应提高了抗压强度和劈裂拉伸强度,并增加了超声波传输速率。最后,进行了生命周期评估(LCA),以评价制备的混凝土样品对环境的影响。考虑到天然骨料的大量消耗,人们认为在混凝土中使用废料将带来环境和经济效益。
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引用次数: 0
A Comparative Evaluation of the Outlier Detection Methods 离群点检测方法的比较评估
Pub Date : 2024-01-08 DOI: 10.34248/bsengineering.1387431
Melis Çelik Güney, Tamer Kayaalp
In data mining, in order to calculate descriptive statistics and other statistical model parameters correctly, outliers should be identified and excluded from the data set before starting data analysis. This paper studied and compared the performance of model-based, density-based, clustering-based, angle-based, and isolation-based outlier detection methods used in data mining. ROC and AUC curves were used to compare the performances of outlier detection methods. A data set with a standard normal distribution and fit a logistic regression was simulated. To compare the methods, the data was modified by adding 30 outliers to the data set. The iForest algorithm was found to have higher prediction power than others. In addition, outliers were found in a real data set with the iForest algorithm, and the data set with outliers and without outliers were compared.
在数据挖掘中,为了正确计算描述性统计和其他统计模型参数,在开始数据分析之前,应从数据集中识别并排除异常值。本文研究并比较了数据挖掘中使用的基于模型、基于密度、基于聚类、基于角度和基于隔离的离群值检测方法的性能。ROC 曲线和 AUC 曲线用于比较离群点检测方法的性能。模拟了具有标准正态分布的数据集,并拟合了逻辑回归。为了比较这些方法,对数据进行了修改,在数据集中添加了 30 个离群值。结果发现,iForest 算法的预测能力高于其他算法。此外,使用 iForest 算法在真实数据集中发现了离群值,并对有离群值和无离群值的数据集进行了比较。
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引用次数: 0
Production of Chemically Modified Shear Thickening Fluids and Investigation of Their Rheological Properties 化学改性剪切增稠液的制备及其流变性能研究
Pub Date : 2023-11-09 DOI: 10.34248/bsengineering.1365965
Murat Yavuz SOLMAZ, Cenk YANEN, Celal KISTAK, Ercan AYDOĞMUŞ
In this study, the rheological properties of shear thickening fluid, which are generally used as single solid phase in the literature, were investigated by chemical material reinforcement. Considering that the unique shear thickening effect of STF is used in many areas such as increasing the impact resistance of fabrics and energy dissipation, this study aims to provide guidance for investigating what STFs can do with chemical bonds as well as physical bonding.Methylene diphenyl diisocyanate (MDI) was used in varying proportions for chemical reinforcement. When the rheological properties of the suspensions reinforced with MDI as a chemical additive were evaluated, the initial viscosity values increased as the MDI ratio increased, while the solidification behavior under shear was observed significantly in the sample with 2.5% MDI ratio with increasing shear ratio.
本研究采用化学材料增强法研究了文献中常用的单固相剪切增稠流体的流变特性。考虑到STF独特的剪切增厚作用被应用于提高织物抗冲击性能和能量耗散等许多领域,本研究旨在为研究STF在化学键和物理键方面的作用提供指导。采用不同比例的亚甲基二苯基二异氰酸酯(MDI)作为化学补强剂。化学添加剂MDI增强悬浮液的流变特性研究表明,初始粘度值随着MDI比的增加而增加,而MDI比为2.5%的悬浮液随着剪切比的增加,在剪切作用下的凝固行为显著。
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引用次数: 0
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Black sea journal of engineering and science
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