Advances in Modelling and Analysis A最新文献

Double Stratification in the Flow of a Newtonian Fluid Along an Inclined Permeable Stretching Surface 牛顿流体沿倾斜可渗透拉伸表面流动中的双重分层

Advances in Modelling and Analysis A Pub Date : 2021-12-31 DOI: 10.18280/ama_a.581-401

RamReddy Chetteti, Abhinava Srivastav

引用次数: 0

Foreign Trade and Forest Resource Dynamic 对外贸易与森林资源动态

Advances in Modelling and Analysis A Pub Date : 2021-12-31 DOI: 10.18280/ama_a.581-402

X. Deng, Huimin Chen, Yun-bao Xu

引用次数: 0

An Analytical Solution of Spatially Dependent One-Dimensional Advection-Dispersion Equation for a Varying Pulse Type Input Source 变化脉冲型输入源空间相关一维平流色散方程的解析解

Advances in Modelling and Analysis A Pub Date : 2020-12-31 DOI: 10.18280/AMA_A.571-402

R. Yadav, J. Roy

{"title":"An Analytical Solution of Spatially Dependent One-Dimensional Advection-Dispersion Equation for a Varying Pulse Type Input Source","authors":"R. Yadav, J. Roy","doi":"10.18280/AMA_A.571-402","DOIUrl":"https://doi.org/10.18280/AMA_A.571-402","url":null,"abstract":"In present study, solution of advection-dispersion equation is obtained to determine concentration distribution of solute introduced from a varying pulse type point source in one-dimensional heterogeneous semi-infinite porous medium. Heterogeneity of the medium gives rise to space dependent groundwater velocity, dispersion coefficient and retardation factor. Groundwater velocity is some exponent ξ to a linear function of space. The dispersion and retardation factor are also exponents of same linear function with exponents (ξ+1) and (ξ-1), respectively, where ξ takes the value 0 or 1. At one end of the domain, a time dependent varying nature source, which involves step-size increasing function of time, acts along the flow up to a certain time the n eliminated while concentration gradient is considered zero at the other end of the domain. Initially, medium is uniformly polluted. Firstly, the advection-dispersion equation is reduced into constant coefficients by using certain transformations and then Laplace Integral Transformation Technique is utilized to get the solution. The obtained result is illustrated with numerical examples to study the effect of various parameters.","PeriodicalId":401262,"journal":{"name":"Advances in Modelling and Analysis A","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127585301","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

An Evaluation of the Chemical Composition of Soft Drinks in Nigeria: A Principal Component Analysis Approach 尼日利亚软饮料化学成分的评价:主成分分析方法

Advances in Modelling and Analysis A Pub Date : 2020-12-31 DOI: 10.18280/AMA_A.571-403

Samuel Olorunfemi Adams, R. Akano, R. I. Rauf

{"title":"An Evaluation of the Chemical Composition of Soft Drinks in Nigeria: A Principal Component Analysis Approach","authors":"Samuel Olorunfemi Adams, R. Akano, R. I. Rauf","doi":"10.18280/AMA_A.571-403","DOIUrl":"https://doi.org/10.18280/AMA_A.571-403","url":null,"abstract":"This study aims to determine the relationship between the chemical compositions of twenty-five (25) soft drinks sold in Nigeria. Sample concentration of twenty-five (25) soft drinks used in the study was collected from the National Agency for Food and Drug Administration and Control (NAFDAC). Principal Component Analysis (PCA) was employed to explain the relationship between the chemical compositions and determine the soft drinks' chemical composition distribution. The result has shown that all except acidity and antioxidant has a significantly strong positive relationship among the chemical structures. PCA suggested retaining three components that explained about 82.465 per cent of the data set's total variability. It was observed that carbonated water, fructose, sucrose, main concentration, stabiliser, E412, colouring and gelatin were the major compositions of the soft drinks in Nigeria, Base on the findings in this study, it is recommendations that; Consumers who are allergic to sugar or diabetic should avoid taking any of the soft drinks with high sugar concentration. Soft drinks companies producing drinks with high sugar content should consider their customers who are diabetic and allergic to high sugar levels.","PeriodicalId":401262,"journal":{"name":"Advances in Modelling and Analysis A","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116506717","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: 3

On Recognizability of Groups by Bottom Layer 基于底层的组可识别性研究

Advances in Modelling and Analysis A Pub Date : 2020-12-31 DOI: 10.18280/AMA_A.571-401

V. Senashov, I. Parashchuk

引用次数: 0

Numerical Calculation for Error Formula for Boole’s Rule 布尔规则误差公式的数值计算

Advances in Modelling and Analysis A Pub Date : 2019-12-31 DOI: 10.18280/ama_a.562-405

R. Fadhil

引用次数: 1

A Comparative Study of Nonlinear Observers Applied to the Colpitts Circuit 非线性观测器在Colpitts电路中的应用比较研究

Advances in Modelling and Analysis A Pub Date : 2019-03-31 DOI: 10.18280/ama_a.560101

A. Errachdi, M. Benrejeb

引用次数: 0

Galerkin Solutions for the Saint-Venant Torsion of Prismatic Bars with Rectangular Cross-sections 矩形截面棱柱杆Saint-Venant扭转的Galerkin解

Advances in Modelling and Analysis A Pub Date : 2019-03-31 DOI: 10.18280/ama_a.560103

Charles Chinwuba Ike

{"title":"Galerkin Solutions for the Saint-Venant Torsion of Prismatic Bars with Rectangular Cross-sections","authors":"Charles Chinwuba Ike","doi":"10.18280/ama_a.560103","DOIUrl":"https://doi.org/10.18280/ama_a.560103","url":null,"abstract":"Received: 10 November 2018 Accepted: 16 February 2019 In this work, the Saint-Venant torsion problem of prismatic bars with rectangular crosssections was presented as a boundary value problem (BVP) of the theory of elasticity. The governing partial differential equation was formulated and shown to be a Poisson equation in terms of the Prandtl stress functions. The Poisson equation governing the Saint-Venant torsion problem was expressed in variational form using Galerkin variational method. The trial function that apriori satisfies the boundary conditions was chosen as a trigonometric cosine series of infinite terms; and in terms of unknown undetermined coefficients or parameters. The unknown parameters were determined by solving the Galerkin variational integral; thus fully determining the Prandtl stress function. The shear stresses were then determined. The maximum shear stress was also obtained. The moment of the cross-section was determined and found to depend on non – dimensional torsional parameters F1(a/b). The maximum shear stress was also found to depend on dimensionless torsional parameters F2(a/b) which were determined and tabulated. It was found that the solutions obtained using the Galerkin method were mathematically closed form solutions because the exact shape functions were used to approximate the trial solution. Expressions obtained for the Prandtl stress function, shear stresses and moment of cross-section were exact and agreed with solutions in the technical literature.","PeriodicalId":401262,"journal":{"name":"Advances in Modelling and Analysis A","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130598508","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

EPNN Based High Secure Intensive Hidden Digital Watermark Application in Telemedicine 基于EPNN的高安全密集隐藏数字水印在远程医疗中的应用

Advances in Modelling and Analysis A Pub Date : 1900-01-01 DOI: 10.18280/ama_a.560104

R. Sailaja, C. Rupa, A. S. Chakravarthy

引用次数: 2

Finite Element Analysis of Natural Rubber, Glass-epoxy and Glass-rubber-epoxy Composites 天然橡胶、玻璃-环氧树脂及玻璃-环氧复合材料的有限元分析

Advances in Modelling and Analysis A Pub Date : 1900-01-01 DOI: 10.18280/ama_a.560102

S. Rajole, S. Hiremath

{"title":"Finite Element Analysis of Natural Rubber, Glass-epoxy and Glass-rubber-epoxy Composites","authors":"S. Rajole, S. Hiremath","doi":"10.18280/ama_a.560102","DOIUrl":"https://doi.org/10.18280/ama_a.560102","url":null,"abstract":"Received: 25 October 2018 Accepted: 12 February 2019 The present article focuses on the study of ballistic performance of the polymer composite sandwich, consisting of natural rubber (NR), glass-epoxy composite (GEC) and glassrubber-epoxy composite (GREC) for different thicknesses (4, 7 and 10 mm). Finite Element (FE) analysis is carried out to predict the energy absorption, ballistic limit velocity, and failure damage modes of the target composite are explored under the impact of the conical nose projectile for different velocity (180, 220 and 260 m/s). The study revealed that significant influences on ballistic impact are thickness, interlayer, and sandwiching composite materials. The energy absorbance and ballistic limit of GEC laminate are increases with an increase in thickness. In the case of interlayer composite GREC ballistic limit is higher than NR and GEC with the change in impact velocity, whereas NR is marginally lower than the GREC laminate. Hence, NR or GRE laminated composites are dominating more in the analysis of impact application. These observations are extended for the experimental validation purpose. Also, these polymer composite materials could be served in the defense sector for bullet-proofing and high impact applications.","PeriodicalId":401262,"journal":{"name":"Advances in Modelling and Analysis A","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126209430","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