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Some trapezoid type inequalities for generalized fractional integral 广义分数阶积分的一些梯形不等式
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2019.16038.1844
Fatma Ertuğral, M. Sarıkaya
In this paper, we have established some trapezoid type inequalities for generalized fractional integral. The results presented here would provide some fractional inequalities and Riemann-Liouville type fractional operators.
本文建立了一类广义分数阶积分的梯形不等式。本文给出的结果将提供一些分数不等式和Riemann-Liouville型分数算子。
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引用次数: 1
Evaluation of longitudinal wave velocity and elasticity modulus of concrete at different ages considering mixing ratios 考虑配合比的不同龄期混凝土纵波速度和弹性模量评价
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2021.18485.2015
Mehdi Sabagh, Mansour Asgari Khorasgani, M. Kazemi
Concrete is a material that the mechanical properties of which change over time. This change is due to chemical reactions within the concrete known as hydration. One of these properties is the modulus of elasticity and longitudinal wave velocity, which has a direct relation with the concrete age and its setting. Just after the materials mixing, the concrete setting is fast, and over time its rate decreases. Here, a series of cubic concrete specimens are prepared and changing in longitudinal wave velocity and modulus of elasticity in different ages is monitored during the process of curing and a relationship has been presented. Materials specifications impact and concrete mixing ratios, including the water to cement ratio and fine to coarse aggregates ratio is studied. Ultrasonic wave velocity has been increased faster at early ages of specimens where the concrete setting process is fast and in last days, rates of increasing the longitudinal wave velocity decreases. An increase in the water to cement ratio leads to increases in the longitudinal wave velocity over time. The empirical equations have been formulated as logarithmic curves. These empirical equations have been developed and a model with more efficiency and precision has been presented. These empirical equations can be used in the analytical and numerical analysis of structures. These models can be used to determine the loading time of concrete structures and to predicting their other physical and mechanical properties, such as strength and stiffness.
混凝土是一种机械性能随时间变化的材料。这种变化是由于混凝土内部被称为水化的化学反应。其中的弹性模量和纵波速度与混凝土的龄期及其设置有直接关系。在材料混合后,混凝土凝结速度很快,随着时间的推移,其速度下降。在此基础上,制备了一系列立方体混凝土试件,监测了其在养护过程中纵波速度和弹性模量在不同龄期的变化,并给出了两者之间的关系。研究了材料规格、影响因素和混凝土配合比,包括水灰比和细粗骨料比。超声波速在混凝土凝结速度快的早期试件中增加较快,在后期试件纵波波速增加速率减小。水灰比的增加导致纵波速度随时间的增加。经验方程已被表示为对数曲线。对这些经验方程进行了推导,并提出了一个效率更高、精度更高的模型。这些经验方程可用于结构的解析和数值分析。这些模型可用于确定混凝土结构的加载时间,并预测其其他物理和机械性能,如强度和刚度。
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引用次数: 0
Impact of movement control order implementation on electricity consumption: A case study of university buildings 运动控制令实施对用电量的影响:以大学建筑为例
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2022.5556
T. Mansur, N. H. Baharudin, R. Ali, Saifol Nizal Sharif
The Covid-19 pandemic has first been identified in China at the end of 2019 and later has spread worldwide. In Malaysia, Covid-19 cases have increased drastically in March 2020 that caused the Government to implement a Movement Control Order (MCO) starting 18 March 2020 to curb the outbreak which has affected all sectors in the country including higher education institutions. The objective of this paper is to present the impact of MCO implementation on the electricity consumption on the university buildings particularly at Universiti Malaysia Perlis. The methodology processes involve comparing the energy usage in 2019 as baseline data with usage in 2020 as the assessed data. These data then been analyzed for every 3 months or quarterly for reporting. Based on the results, MCO implementation has shown positive impact to the energy conservation where 3,023 MWh of electrical energy has been reduced in 2020 which is 25.72% less than the same period in 2019. This condition has been extremely beneficial to the university’s operations where RM 1.369 million of electricity bill has been saved. In the aspect of environmental sustainability, the amount of energy reduction is equivalent to more than 2,000 tonnes of CO2 avoidance at rated value 0.694 tCO2 per MWh. As a result from energy reduction, the BEI performance of the buildings has improved from 3-Star (moderately efficient) to 4-Star (efficient).
2019年底,新冠肺炎疫情首次在中国被发现,随后蔓延至全球。在马来西亚,2019冠状病毒病病例在2020年3月急剧增加,导致政府从2020年3月18日起实施行动控制令(MCO),以遏制疫情,疫情已影响到该国所有部门,包括高等教育机构。本文的目的是介绍MCO实施对大学建筑用电的影响,特别是在马来西亚大学。方法过程包括将2019年的能源使用情况作为基线数据与2020年的使用情况作为评估数据进行比较。然后每3个月或每季度对这些数据进行分析报告。根据结果,MCO的实施对节能产生了积极影响,2020年减少了3,023兆瓦时的电能,比2019年同期减少了25.72%。这种情况对大学的运作非常有利,节省了136.9万令吉的电费。在环境可持续性方面,以每兆瓦时0.694吨二氧化碳的额定值计算,减少的能源相当于避免超过2,000吨二氧化碳。由于节能,建筑的BEI性能从3星(中等效率)提高到4星(高效)。
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引用次数: 1
On studying bi-(Gamma)-algebra and some related concepts 双(γ)代数及其相关概念的研究
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2022.5772
M. M. Abbood, Ali Al-Fayadh, Hassan H. Ebrahim
The aim of this research paper is to introduce the concept of bi-(Gamma)-algebra space (bi-gamma algebra space). The concept of bi-(mu)-measurable set in a bi-(Gamma)-algebra space is defined. With this concept, some properties of bi-(Gamma)-algebra space are proved. We then define various separation axioms for bi-(Gamma)-algebra space such as (M_{0},M_{1}, M_{2}, M_{3},) and (M_{4}); then the relationships between them are studied. In addition, the concept of measurable function between two bi-measurable spaces is introduced and some results are discussed.
本文的目的是引入双(Gamma)-代数空间(bi- Gamma代数空间)的概念。定义了双代数空间中双(mu)可测集的概念。利用这一概念,证明了双(Gamma)-代数空间的一些性质。然后我们定义了双-(Gamma)-代数空间的各种分离公理,如(M_{0},M_{1}, M_{2}, M_{3},)和(M_{4});然后研究了它们之间的关系。此外,引入了双可测空间间的可测函数的概念,并讨论了一些结果。
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引用次数: 0
Fixed Point Results in Complex Valued Metric Spaces and an Application 复值度量空间中的不动点结果及其应用
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2020.16034.1843
R. Rashwan
In this paper, we introduce xed point theorem for a general contractive condition in complex valued metric spaces. Also, some important corollaries under this contractive condition are obtained. As an application, we nd a unique solution for Urysohn integral equations and some illustrative examples are given to support our obtaining results. Our results extend and generalize the results of Azam et al. [2] and some other known results in the literature.
本文引入复值度量空间中一般压缩条件的杂点定理。并在此压缩条件下得到了一些重要的推论。作为应用,我们得到了Urysohn积分方程的唯一解,并给出了一些例子来支持我们的所得结果。我们的结果扩展和推广了Azam et al.[2]和文献中其他一些已知的结果。
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引用次数: 0
$ omega $-$ alpha $-open sets $ omega $-$ alpha $-continuity in bitopological spaces 二元拓扑空间上的$ $-$ α -开集$ $-$ α -连续性
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2020.21599.2279
C. Granados
The purposes of this article are to introduce and characterize the notions of $ (i,j) $-$ omega $-$ alpha $-open sets in bitopological spaces. Besides, It introduces and studies the concepts of $ (i,j) $-$ omega $-$ alpha $-continuous functions. Furthermore, $ (i,j) $-$ omega $-$ alpha $-connected and $ (i,j) $-$ omega $-$ alpha $-set-connected functions are defined in bitopological spaces and some of their properties are studied.
本文的目的是介绍双拓扑空间中$ (i,j) $-$ ω $-$ α $-开集的概念并对其进行表征。此外,介绍并研究了$ (i,j) $-$ ω $-$ α $-连续函数的概念。进一步,在双拓扑空间中定义了$ (i,j) $-$ ω $-$ α $-连通函数和$ (i,j) $-$ ω $-$ α $-集连通函数,并研究了它们的一些性质。
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引用次数: 0
Comparison of Harder stability and Rus stability and their equivalence 硬稳定性与罗斯稳定性的比较及其等价性
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2021.17495.1939
G. Babu, G. Satyanarayana
In this paper, we study the stability of Mann iteration procedure in two directions, namely one due to Harder and the second one due to Rus with respect to a map $T:Kto K$ where $K$ is a nonempty closed convex subset of a normed linear space $X$ and there exist $deltain(0,1)$ and $Lgeq 0$ such that $||Tx-Ty||leqdelta||x-y||+L||x-Tx||$ for $x,yin K$. Also, we show that the Mann iteration procedure is stable in the sense of Rus may not imply that it is stable in the sense of Harder for weak contraction maps. Further, we compare and study the equivalence of these two stabilities and provide examples to illustrate our results.
本文研究了关于映射$T:K到K$的两个方向上的Mann迭代过程的稳定性,其中$K$是赋范线性空间$X$的一个非空闭凸子集,并且存在$deltain(0,1)$和$Lgeq 0$,使得$||Tx-Ty||leqdelta|| X -y||+L|| X - tx ||$对于$X,yin K$。此外,我们还证明Mann迭代过程在Rus意义上是稳定的,但这并不意味着对于弱收缩映射它在Harder意义上是稳定的。进一步,我们比较和研究了这两种稳定性的等价性,并举例说明了我们的结果。
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引用次数: 0
On the maximum number of limit cycles of a planar differential system 平面微分系统的最大极限环数
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2021.23049.2468
Sana Karfes, E. Hadidi, M. Kerker
In this work, we are interested in the study of the limit cycles of a perturbed differential system in  (mathbb{R}^2), given as follows[left{begin{array}{l}dot{x}=y, dot{y}=-x-varepsilon (1+sin ^{m}(theta ))psi (x,y),%end{array}%right.]where (varepsilon) is small enough, (m) is a non-negative integer, (tan (theta )=y/x), and (psi (x,y)) is a real polynomial of degree (ngeq1). We use the averaging theory of first-order to provide an upper bound for the maximum number of limit cycles. In the end, we present some numerical examples to illustrate the theoretical results.
在这项工作中,我们对(mathbb{R}^2)中摄动微分系统的极限环的研究感兴趣,给出如下[left{begin{array}{l}dot{x}=y, dot{y}=-x-varepsilon (1+sin ^{m}(θ))psi (x,y),%end{array}%right。],其中(varepsilon)足够小,(m)是非负整数,(tan (θ)=y/x), (psi (x,y))是次(ngeq1)的实多项式。利用一阶平均理论给出了极限环的最大数目的上界。最后,给出了一些数值算例来说明理论结果。
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引用次数: 0
Investigation and Classification of Chronic Wound Tissue images Using Random Forest Algorithm (RF) 基于随机森林算法(RF)的慢性伤口组织图像调查与分类
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2021.24438.2744
T. Chitra, C. Sundar, S. Gopalakrishnan
The broad increase make use of digital cameras, by hand wound imaging has turn out to be common practice in experimental place. There is in malice of still a condition for a reasonable device for accurate wound curing consideration between dimensional facility and tissue categorization in a exacting simple to exploit technique We achieved the major unit of this plan by computing a 3-D model for wound dimensions using un calibrated revelation techniques. We highlight at this point on tissue classification from color and eminence region descriptors computed after unverified segmentation. As a result of perception distortions, unconstrained lighting provisions and viewpoints, wound assessments modify commonly in the middle of patient review. The majority significant separation of this article is to overcome this trouble by means of a multi inspection approach for tissue classification, relying on a 3-D model onto which tissue labels are mapped and categorization result merged. The investigational categorization tests communicate that improved repeatability and robustness are obtained and that metric assessment is attain through appropriate region and degree dimensions and wound chart origin. In this manuscript we proposed wound image segmentation, tissue classification in grouping with the Random Forest (RF). These methodology are helpful for classifying the rate of injured tissue in a segmented element and improved accuracy.
随着数码相机的广泛使用,在实验场所进行手部伤口成像已成为普遍做法。考虑到尺寸设施和组织分类之间的关系,在一种严格简单的开发技术中,仍然存在一个合理的设备来精确治疗伤口的条件。我们通过使用未校准的揭示技术计算伤口尺寸的三维模型来实现该计划的主要单元。在这一点上,我们强调从未经验证的分割后计算的颜色和隆起区域描述符进行组织分类。由于感知扭曲,不受约束的照明规定和观点,伤口评估通常在患者复查中修改。本文最重要的分离是通过组织分类的多重检查方法来克服这一问题,该方法依赖于组织标签映射和分类结果合并的三维模型。研究性分类测试表明,获得了改进的可重复性和稳健性,并且通过适当的区域和程度维度和伤口图来源获得了度量评估。在这篇文章中,我们提出了伤口图像分割,组织分类分组随机森林(RF)。这些方法有助于在分割单元中对损伤组织进行分类,提高准确率。
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引用次数: 4
Numerical analysis of the wall impact in the peristaltic pumping of a casson liquid in an inclined canal 斜管内液体蠕动泵送过程中壁冲击的数值分析
Q4 Mathematics Pub Date : 2022-01-01 DOI: 10.22075/IJNAA.2021.24467.2750
Ramu Katipelli, Shvn Krishna Kumari
Flow is considered in the moving frame of reference with constant velocity along the wave. The developed mathematical model is presented by a set of partial differential equations. A numerical algorithm based on finite element method is implemented to evaluate the numerical solution of the governing partial differential equations in the stream-vorticity formulation.This paper is about the study of Numerical analysis of the peristaltic conveyance of a casson fluid in a skewed tube under the consideration of low Reynolds and long wavelength .The problem is discussed on the inclination angle and yield stress of a fluid are examined for different qualitative and quantitative effects on pressure and also the trapping bolus creation analyzed by changing various parameters, the equation of flux analyzed in a wave frame moving at wave speed. Expressions are derived for the frictional force, change in volume flow rate, rise and drop in pressure. The impact of frictional force on various parameters on the pumping characteristics and pressure flow curves discussed through graphs
流动是在沿波匀速运动的参考系中考虑的。建立的数学模型由一组偏微分方程表示。提出了一种基于有限元法的数值算法,用于求解流涡量方程中控制偏微分方程的数值解。本文研究了低雷诺数和长波长条件下卡松流体在斜管中蠕动传输的数值分析问题,讨论了流体的倾角和屈服应力对压力的不同定性和定量影响,分析了不同参数对捕获球产生的影响,分析了以波速运动的波框中的通量方程。推导出摩擦力、体积流量变化、压力升降的表达式。通过图形讨论了摩擦力对各参数对泵送特性和压力流动曲线的影响
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引用次数: 0
期刊
International Journal of Nonlinear Analysis and Applications
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