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The Application of Hybrid Krill Herd Artificial Hummingbird Algorithm for Scientific Workflow Scheduling in Fog Computing

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Journal of Bionic Engineering 2023年第5期20卷 2443-2464页

作者： Aveen Othman Abdalrahman Daniel Pilevarzadeh Shafi Ghafouri ali ghaffari Department of Civil Engineering Garmian UniversityBardasureKalarIraq Department of Computer Engineering Tabriz BranchIslamic Azad UniversityTabriz***Iran Computer Engineering Department Faculty of Engineering and Natural SciencesIstinye UniversityIstanbulTurkey

Fog Computing(FC)provides processing and storage resources at the edge of the Internet of Things(IoT).By doing so,FC can help reduce latency and improve reliability of IoT *** energy consumption of servers and computing resources is one of the factors that directly affect conservation costs in fog *** consumption can be reduced by efficacious scheduling methods so that tasks are offloaded on the best possible *** deal with this problem,a binary model based on the combination of the Krill Herd Algorithm(KHA)and the Artificial Hummingbird Algorithm(AHA)is introduced as Binary KHA-AHA(BAHA-KHA).KHA is used to improve ***,the BAHA-KHA local optimal problem for task scheduling in FC environments is solved using the dynamic voltage and frequency scaling(DVFS)*** Heterogeneous Earliest Finish Time(HEFT)method is used to discover the order of task flow *** goal of the BAHA-KHA model is to minimize the number of resources,the communication between dependent tasks,and reduce energy *** this paper,the FC environment is considered to address the workflow scheduling issue to reduce energy consumption and minimize makespan on fog *** results were tested on five different workflows(Montage,CyberShake,LIGO,SIPHT,and Epigenomics).The evaluations show that the BAHA-KHA model has the best performance in comparison with the AHA,KHA,PSO and GA *** BAHA-KHA model has reduced the makespan rate by about 18%and the energy consumption by about 24%in comparison with *** is a preview of subscription content,log in via an institution to check access.

关键词： Workflow Scheduling Fog Computing Internet of Things Hummingbird Algorithm Krill Algorithm

Spatiotemporal distribution of soil moisture in gully facies

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International Soil and Water Conservation Research 2020年第1期8卷 15-25页

作者： Seyed Hamidreza Sadeghi gholam.ali ghaffari Abdulsaleh Rangavar Zeinab Hazbavi Vijay P.Singh Department of Watershed Management Engineering Faculty of Natural ResourcesMember of Agrohydrology GroupTarbiat Modares UniversityNoor***Mazandaran ProvinceIran Department of Watershed Management Engineering Faculty of Natural Resources and Marine SciencesTarbiat Modares UniversityNoor46417-76489Iran Scientific Member of Khorasan Razavi Research Centre for Agriculture and Natural Resources MashhadIran Watershed Management Sciences and Engineering Department of Watershed Management EngineeringFaculty of Natural ResourcesTarbiat Modares UniversityIran Department of Watershed Management Engineering Faculty of Natural ResourcesTarbiat Modares UniversityNoor ***Mazandaran ProvinceIran Water Engineering Department of Biological and Agricultural Engineering&Zachry Department of CivilEngineeringTexas A and M UniversityCollege StationTX77843-2117USA

Gully erosion is one of the most important forms of land degradation in many regions of the *** the process of gully erosion therefore is important for better management of the wa-tersheds prone to gully ***,many different aspects of gully erosion,like hydrological behavior,are still not fully *** present study investigates the spatial distribution of soil moisture content(SMC),as one of the hydrological factors,at different depths and points across the cross section in the vicinity of the headcut of three gullies located in the Kalat County,Khorasan Razavi Province,*** were measured at depths of 10,20,30,50,70 and 100 cm at each seven points across the study cross sections one to three days after occurrence of three rain *** sampling points were symmetrically located at a distance of 50 cm outside the gully banks,two at the vertex of the sidewalls,two in the middle of the sidewalls and one at the center of gully cross *** were measured using a weighted *** of the study revealed a broad range of changes in SMCs at various depths and *** minimum and maximum SMCs were found to be about 2%and 38%,respectively,for the study period and gullies under *** coefficient of variation(CV)had drastic changes for various gullies and storm events from 2 to 107%.Results further indicated that SMC moved from the sidewalls towards the floor of the cross ***,the maximum SMC for storm events was associated with the point located in the center of gullies,which indicated the role of gully system in draining soil *** findings of this study will help watershed managers un-derstand the important role of gully facies in changing water content of the soil that affects other eco-hydrological processes.

关键词： Soil moisture capacity Soil water Subsurface runoff Water erosion

Projections on Weak*-closed Subspace of Dual Banach Algebras

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Acta Mathematica Sinica,English Series 2012年第3期28卷 477-486页

作者： ali ghaffari Department of Mathematics Semnan University

Our first purpose in this paper is to provide necessary conditions for a weak＊-closed translation invariant subspace in the semigroup algebra of a locally compact topological foundation semigroup to be completely complemented. We give conditions when a weak＊-closed left translation invariant subspace in Ma,（S）＊ of a compact cancellative foundation semigroup S is the range of a weak＊-weak＊ continuous projection on M~,（S）＊ commuting with translations. Let G be a locally compact group and A be a Banach G-module. Our second purpose in this paper is to study some projections on A＊ and /3（A＊） which commutes with translations and convolution.

关键词： Amenability Banach algebras completely cancellative foundation semigroup projections semigroup algebras weak*-closed subspace weak*-operator topology

Volumetric and ultrasonic properties of thiamine hydrochloride drug in aqueous solutions of choline-based deep eutectic solvents at different temperatures

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Chinese Journal of Chemical Engineering 2023年第10期62卷 21-30页

作者： Hemayat Shekaari Fariba ghaffari Masumeh Mokhtarpour Department of Physical Chemistry University of TabrizTabrizIran

Important efforts have been made over the past years to improve the drug acts,which leads to the discovery of novel drug preparations and delivery *** optimal design of such processes requires a molecular-level understanding of the interactions between drug molecules and biological *** thermodynamic investigation provides deep and complete knowledge of interactions and the choice of appropriate and suitable production compounds in pharmaceutical ***,the analysis of drugs+co-solvents in aqueous media is the central issue in many types of research because they exert their impact by interacting with biological *** work is aimed to measure the density and speed of sound for the thiamine hydrochloride in water+deep eutectic solvents(DESs)mixtures(choline chloride/urea,choline chloride/ethylene glycol and choline chloride/glycerol)at temperature range(293.15-308.15)*** correlation of the evaluated parameters in some standard relations,the partial molar parameters *** molar volumes,Vφ,m,and apparent molar isentropic compression,κ_(s,φ,m),are *** addition,apparent molar isobaric expansion,E^(0)_(φ,m),and Hepler’s constant are computed from the density and speed of sound *** fitting the experimental Vφ,m andκ_(s,φ,m)the Redlich-Meyer equation was employed that the important quantities;standard partial molar volume,V^(0)_(m),and partial molar isentropic compression,κφ,m0,were *** thermodynamic analysis of the studied system also plays a crucial role in the pharmaceutical industry.

关键词： Deep eutectic solvents Thiamine hydrochloride Density Speed of sound Redlich-Meyer equation

Projections onto Invariant Subspaces of Some Banach Algebras

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Acta Mathematica Sinica,English Series 2008年第7期24卷 1089-1096页

作者： ali ghaffari Department of Mathematics Semnan UniversitySemnanIran

In this paper, among other things, the author studies the weak^＊-closed left translation invariant complemented subspace of semigroup algebras and group algebras. Also, the author studies the relationships between pr... 详细信息

关键词： Banach algebras complemented locally compact group translation invariant weak^*- closed

Γ-amenability of Locally Compact Groups

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Acta Mathematica Sinica,English Series 2010年第12期26卷 2313-2324页

作者： ali ghaffari Department of Mathematics Semnan University

Let G be a locally compact group and let F be a closed subgroup of G × G. Pier introduced the notion of F-amenability which gives a new classification of groups. This concept generalizes the concept of amenability and inner amenability for locally compact groups. In this paper, among other things, we extend some standard results for amenable groups to F-amenable groups and give various characterizations for F-amenable groups. A sequence of characterizations of F-amenable groups is given here by developing the well-known Flner＇s conditions for amenable locally compact groups. Several characterizations of inner amenability are also given.

关键词： Amenable groups Banach algebras locally compact groups F-amenable groups innerinvariant means unimodular groups

A CHARACTERIZATION OF LOCALLY COMPACT INNER AMENABLE GROUPS

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Acta Mathematica Scientia 2008年第3期28卷 588-594页

作者： ali ghaffari Department of Mathematics Semnan UniversitySemnan Iran

For locally compact groups G, Kuan Yuan studied a notion of inner amenability groups, that is, if there exists an inner invariant mean on G. In this article, among other things, the author investigates the inner amenability on a locally compact group G. The author gives sufficient conditions and some necessary conditions about G to have an inner invariant mean.

关键词： Banach algebras locally compact group inner invariant mean unimodular group

Characterization of Operators on the Dual of Hypergroups which Commute with Translations and Convolutions

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Acta Mathematica Sinica,English Series 2004年第2期20卷 201-208页

作者： ali ghaffari alireza Medghalchi Department of Mathematics Semnan UniversityP.O.Box 35195-363SemnanIran Department of Mathematics Teacher Training UniversityTehranIran.

For a locally compact group G, L 1(G) is its group algebra and L ∞(G) is the dual of L 1(G). Lau has studied the bounded linear operators T : L ∞(G) → L ∞(G) which commute with convolutions and translations. For a subspace H of L ∞(G), we know that M(L ∞(G),H), the Banach algebra of all bounded linear operators on L ∞(G) into H which commute with convolutions, has been studied by Pym and Lau. In this paper, we generalize these problems to L(K)*, the dual of a hypergroup algebra L(K) in a very general setting, i. e. we do not assume that K admits a Haar measure. It should be noted that these algebras include not only the group algebra L 1(G) but also most of the semigroup algebras. Compact hypergroups have a Haar measure, however, in general it is not known that every hypergroup has a Haar measure. The lack of the Haar measure and involution presents many difficulties; however, we succeed in getting some interesting results.

关键词： Hypergroup algebras Group algebras Operators Translations Convolutions Invariant

Recent progresses in dry gas polymeric filters

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Journal of Energy Chemistry 2021年第11期30卷 103-119,I0003页

作者： Samaneh Bandeh ali Hamid Ghasemi Reyhaneh Ahmadi ali ghaffari Department of Chemical Engineering Faculty of EngineeringArak UniversityArak 38156-8-8349Iran Department of Mechanical Engineering Arak University of TechnologyArak38181-41167Iran Department of Mechanical Engineering Iran University of Science and TechnologyTehranIran

Filtration and membrane separation are popular methods in gas separation since they are cost and energy efficient. Despite to air filters, there are comparatively few studies on dry gas filters, particularly at industrial scale. In fact, major unsolved challenges such as high efficiency, low pressure drop, long-term stability, high-thermal and chemical stability and advanced physiochemical properties, are still remained. The aim of this review is to scrutinize the advanced scientific and technological practices (such as selection of appropriate polymeric materials and additives, nanotechnology, modification techniques and preparation methods) towards design and fabrication of an efficient filter media for solid particles removal from the natural gas flow. Recent progresses in solid particle separation mechanisms, modeling and simulation techniques and the effect of membrane fabrication methods on its performance, strategies for modification of filter media, current challenges and future perspective are discussed.

关键词： Filtration Solid particle separation Dry gas filter Membrane Nanotechnology