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RSS-Based Indoor Localization System with Single Base Station

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Computers, materials & Continua 2022年第3期70卷 5437-5452页

作者： Samir Salem Al-Bawri mohammad Tariqul Islam mandeep Jit Singh mohd Faizal Jamlos Adam Narbudowicz max J.Ammann Dominique m.m.P.Schreurs Space Science Centre Climate Change InstituteUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaUKMBangi43600SelangorMalaysia Faculty of mechanical Engineering Universiti Malaysia PahangPekan26600PahangMalaysia Antenna and High Frequency Research Centre School of Electrical&Electronic EngineeringDublin Institute of TechnologyDublin 8Ireland Department of Electrical Engineering Division ESAT-TELEMICKU LeuvenBelgium

The paper proposes an Indoor Localization System(ILS)which uses only one fixed Base Station(BS)with simple non-reconfigurable *** proposed algorithm measures Received Signal Strength(RSS)and maps it to the location in the room by estimating signal strength of a direct line of sight(LOS)signal and signal of the first order reflection from the *** algorithm is evaluated through both simulations and empirical measurements in a furnished open space office,sampling 21 different locations in the *** is demonstrated the system can identify user’s real-time location with a maximum estimation error below 0.7 m for 80%confidence Cumulative Distribution Function(CDF)user level,demonstrating the ability to accurately estimate the receiver’s location within the *** system is intended as a cost-efficient indoor localization technique,offering simplicity and easy integration with existing wireless communication *** comparable single base station localization techniques,the proposed system does not require beam scanning,offering stable communication capacity while performing the localization process.

关键词： Indoor localization localization techniques received signal strength

Comparison of three different CFD methods for dense fluidized beds and validation by a cold flow experiment

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Particuology 2016年第6期14卷 34-47页

作者： Alexander Stroh Falah Alobaid max Thomas Hasenzahl] Jochen Hilz Jochen Strohle Bernd Epple Technische Universitdt Darmstadt Institute for Energy Systems and Technology Otto-Berndt-Straβe 2 64287 Darmstadt Germany

This work focuses on a comparison between three different numerical CFD methods, namely Euler-Euler, Euler-Lagrange-stochastic, and Euler-Lagrange-deterministic, to treat a dense spouted bed, A simple cold flow experiment was used to investigate the hydrodynamics of a gas-solid flow in a three dimensional lab-scale spouted bed, In this context, two different air mass flow rates, 0,005 and 0.006 kg/s, were applied during fluidization. The experimental bed behaviour was recorded with a high-speed camera to validate the numerical predictions in terms of bubble size, bed expansion rate, and particle velocities at different reactor heights. The numerical setup was kept similar between all three modelling approaches, At both gas mass flow rates all three approaches are able to capture the overall bed expansion. However, at higher gas mass flow rates, discrepancies between experiment and simulation increase for the Euler-Euler and Euler-Lagrange-stochastic models. The Euler-Lagrange deterministic model most accurately predicts the flow pattern at both mass flow rates. The main reasons for discrepancies between simulation and experiment result from modelling of the collision and friction forces.

关键词： Computational fluid dynamics Euler-Lagrange-deterministic collisionmodel Euler-EulermP-PIC approach Experimental validation

Computational Investigation of the Effects of Sample Geometry on the Superconducting-Normal Phase Boundary and Vortex-Antivortex States in mesoscopic Superconductors

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Communications in Computational Physics 2009年第9期6卷 673-698页

作者： Sangbum Kim max Gunzburger Janet Peterson Chia-Ren Hu Division of Energy Systems Research Ajou UniversitySuwon 442-749Korea Department of Scientific Computing Florida State UniversityTallahasseeFL 32309-4120USA Center for Theoretical Physics Department of PhysicsTexas A&M UniversityCollege StationTexas 77843USA

A computational study of superconducting states near the superconductingnormal phase boundary in mesoscopic finite cylinders is *** computational approach uses a finite element method to find numerical solutions of the linearized Ginzburg-Landau equation for samples with various sizes,aspect ratios,and crosssectional shapes,i.e.,squares,triangles,circles,pentagons,and four star *** vector potential is determined using a finite element method with two penalty terms to enforce the gauge conditions that the vector potential is solenoidal and its normal component vanishes at the surface(s)of the *** eigenvalue problem for the linearized Ginzburg-Landau equations with homogeneous Neumann boundary conditions is solved and used to construct the superconducting-normal phase boundary for each ***-antivortex(V-AV)configurations for each sample that accurately reflect the discrete symmetry of each sample boundary were found through the computational *** V-AV configurations are realized just within the phase boundary in the magnetic field-temperature phase *** are made between the results obtained for the different sample shapes.

关键词： Superconductivity nucleation symmetry finite element method

Interventional strategies in infected necrotizing pancreatitis:Indications,timing,and outcomes

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World Journal of Gastroenterology 2022年第27期28卷 3383-3397页

作者： Birte Purschke Louisa Bolm max Nikolaus meyer Hiroki Sato Department of Gastrointestinal Surgery Massachusetts General HospitalBostonMA 02114United States Department of Radiation Oncology Massachusetts General HospitalBostonMA 02114United States Department of medicine Asahikawa Medical UniversityAsahikawa 0788510HokkaidoJapan Department of Gastroenterology Asahikawa Kosei HospitalAsahikawa 0788211HokkaidoJapan

Acute pancreatitis(AP)is one of the most common gastrointestinal diseases and remains a life-threatening *** AP resolves to restitutio ad integrum in approximately 80%of patients,it can progress to necrotizing pancreatitis(NP).NP is associated with superinfection in a third of patients,leading to an increase in mortality rate of up to 40%.Accurate and early diagnosis of NP and associated complications,as well as state-of-the-art therapy are essential to improve patient *** emerging role of endoscopy and recent trials on multidisciplinary management of NP established the“step-up approach”.This approach starts with endoscopic interventions and can be escalated to other interventional and ultimately surgical procedures if *** showed that this approach decreases the incidence of new multiple-organ failure as well as the risk of interventional ***,the optimal interventional sequence and timing of interventional procedures remain *** review aims to summarize the indications,timing,and treatment outcomes for infected NP and to provide guidance on multidisciplinary decision-making.

关键词： Pancreatitis Acute necrotizing pancreatitis Necrosis Superinfection Endoscopy Surgery

Auxin regulation and mdPIN expression during adventitious root initiation in apple cuttings

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Horticulture Research 2020年第1期7卷 955-966页

作者： Ling Guan Yingjun Li Kaihui Huang Zong-ming(max)Cheng College of Horticulture Nanjing Agricultural University210095 NanjingChina Institute of Pomology Jiangsu Academy of Agricultural SciencesJiangsu Key Laboratory for Horticultural Crop Genetic Improvement210014 NanjingChina Department of Plant Sciences University of TennesseeKnoxvilleTN 37831USA

Adventitious root(AR)formation is critical for the efficient propagation of elite horticultural and forestry *** decades of research,the cellular processes and molecular mechanisms underlying AR induction in woody plants remain *** examined the details of AR formation in apple(malus domestica)m.9 rootstock,the most widely used dwarf rootstock for intensive production,and investigated the role of polar auxin transport in postembryonic *** formation begins with a series of founder cell divisions and elongation of the interfascicular cambium adjacent to vascular *** process is associated with a relatively high indole acetic acid(IAA)content and hydrolysis of starch *** auxin treatment promoted this cell division,as well as the proliferation and reorganization of the endoplasmic reticulum and Golgi *** contrast,treatment with the auxin transport inhibitor N-1-naphthylphthalamic acid(NPA)inhibited cell division in the basal region of the cuttings and resulted in abnormal cell divisions during the early stage of AR *** addition,PIN-FORmED(PIN)transcripts were differentially expressed throughout the whole AR development *** also detected upregulation of mdPIN8 and mdPIN10 during induction;upregulation of mdPIN4,mdPIN5,and mdPIN8 during extension;and upregulation of all mdPINs during AR *** research provides an improved understanding of the cellular and molecular underpinnings of the AR process in woody plants.

关键词： hydrolysis elite dwarf

molecule-based kinetic modeling by monte Carlo methods for heavy petroleum conversion

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Science China Chemistry 2013年第11期56卷 1608-1622页

作者： de OLIVEIRA Luís Pereira VERSTRAETE Jan J. KOLB max IFP Energies nouvelles Rond-point de l'échangeur de Solaize-BP 369360 SolaizeFrance Laboratoire de Chimie cole Normale Supérieure69364 Lyon Cedex 07France

A methodology for kinetic modeling of conversion processes is *** proposed approach allows to overcome the lack of molecular detail of the petroleum fractions and to simulate the reactions of the process by means of a two-step *** the first step,a synthetic mixture of molecules representing the feedstock is generated via a molecular reconstruction method,termed SR-REm molecular *** the second step,a kinetic monte Carlo method,termed stochastic simulation algorithm(SSA),is used to simulate the effect of the conversion reactions on the mixture of *** resulting methodology is applied to the Athabasca vacuum residue *** adequate molecular representation of the vacuum residue is obtained using the SR-REm *** reaction simulations present a good agreement with the laboratory data for Athabasca vacuum residue *** addition,the proposed methodology provides the molecular detail of the vacuum residue conversion throughout the reactions simulations.

关键词： monte-Carlo molecular reconstruction kinetic modeling stochastic simulation algorithm vacuum residue hydrocracking

维普期刊数据库

Proving Your Proficiency——max de Lotbinière

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语言教育 1998年第8期 36-38页

作者： max de Lotbiniere 史习冬

The most important question for any EFL learner is'how good is my English?'. Knowing the answer not onlyhelps your confidence, it’s useful if you want to make

关键词： learner answer TOEFL confidence speaking writing max de Lotbini intended listening popularity

维普期刊数据库

Predicting EHL film thickness parameters by machine learning approaches

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Friction 2023年第6期11卷 992-1013页

作者： max mARIAN Jonas mURSAK marcel BARTZ Francisco J.PROFITO Andreas ROSENKRANZ Sandro WARTZACK Department of mechanical and metallurgical Engineering School of EngineeringPontificia Universidad Católica de ChileSantiago6904411Chile Engineering Design Friedrich-Alexander-University Erlangen-Nuremberg(FAU)Erlangen91058Germany Department of mechanical Engineering Polytechnic School of the University of São PauloSão Paulo05508-030Brazil Department of Chemical Engineering Biotechnology and Materials(DIQBM)FCFMUniversidad de ChileSantiago8370456Chile

Non-dimensional similarity groups and analytically solvable proximity equations can be used to estimate integral fluid film parameters of elastohydrodynamically lubricated(EHL)*** this contribution,we demonstrate that machine learning(mL)and artificial intelligence(AI)approaches(support vector machines,Gaussian process regressions,and artificial neural networks)can predict relevant film parameters more efficiently and with higher accuracy and flexibility compared to sophisticated EHL simulations and analytically solvable proximity equations,*** this purpose,we use data from EHL simulations based upon the full-system finite element(FE)solution and a Latin hypercube *** verify that the original input data are required to train mL approaches to achieve coefficients of determination above *** is revealed that the architecture of artificial neural networks(neurons per layer and number of hidden layers)and activation functions influence the prediction *** impact of the number of training data is exemplified,and recommendations for a minimum database size are *** ultimately demonstrate that artificial neural networks can predict the locally-resolved film thickness values over the contact domain 25-times faster than FE-based EHL simulations(R^(2) values above 0.999).We assume that this will boost the use of mL approaches to predict EHL parameters and traction losses in multibody system dynamics simulations.

关键词： machine learning elastohydrodynamic lubrication film thickness support vector machine Gaussian process regression artificial neural network

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德国富克旺根艺术大学图书馆

现代装饰 2013年第2期 44-51页

作者： max Dudler Stefan müller 谢作标 max Dudler Architekt

富克旺根艺术大学是德国国内最大的音乐学典藏的收藏地之一。截至目前,它有约190.000件乐谱、唱片、图片、书籍以及其它媒体文件分散保存在该地区的各类档案馆及图书馆内。如今,来自富克旺根艺术大学、原波鸿鲁尔大学音乐图书馆以及杜... 详细信息

富克旺根艺术大学是德国国内最大的音乐学典藏的收藏地之一。截至目前,它有约190.000件乐谱、唱片、图片、书籍以及其它媒体文件分散保存在该地区的各类档案馆及图书馆内。如今,来自富克旺根艺术大学、原波鸿鲁尔大学音乐图书馆以及杜伊斯堡艾森大学音乐教育学院,这三家机构的音乐类典藏全部集中统一存放在一栋由建筑设计师max Dudler设计的新图书馆大楼内。这家新图书馆坐落于Werden校园,并于2012年9月底已正式对外开放。

关键词：富克图书馆外墙建筑物书架阅览室艺术德国

来源：博看期刊