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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

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

A view-based model of data-cube to support big earth data systems interoperability

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Big Earth Data 2017年第1期1卷 75-99页

作者： Stefano Nativi Paolo Mazzetti max Craglia Department of Florence institute of atmospheric Pollution research of the National research Council of italySesto Fiorentinoitaly European Commission Joint research CentreDirectorate B:growth and innovation Digital Economy UnittP262 Joint research Centreispraitaly

Big Earth Data-Cube infrastructures are becoming more and more popular to provide Analysis Ready Data,especially for managing satellite time *** infrastructures build on the concept of multidimensional data model(data hypercube)and are complex systems engaging different disciplines and *** this reason,their interoperability capacity has become a challenge in the Global Change and Earth System science *** address this challenge,there is a pressing need in the community to reach a widely agreed definition of Data-Cube infrastructures and their key *** this respect,a discussion has started recently about the definition of the possible facets characterizing a Data-Cube in the Earth Observation *** manuscript contributes to such debate by introducing a view-based model of Earth Data-Cube systems to design its infrastructural architecture and content schemas,with the final goal of enabling and facilitating *** introduces six modeling views,each of them is described according to:its main concerns,principal stakeholders,and possible patterns to be *** manuscript considers the Business Intelligence experience with Data Warehouse and multidimensional“cubes”along with the more recent and analogous development in the Earth Observation domain,and puts forward a set of interoperability recommendations based on the modeling views.

关键词： Data-cube big earth data cyberinfrastructures view-based modeling online analytical processing big earth data access and interoperability big data analytics OLaP earth system science SDg

Supply chain and logistics innovations with the Belt and Road Initiative

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Journal of Management Science and Engineering 2020年第2期5卷 77-86页

作者： Hau LLee Zuo-Jun(max)Shen Graduate School of Business Stanford UniversityStanfordCA94305-5015USA Department of Industrial Engineering and Operations Research and Department of Civil and Environmental EngineeringUniversity of CaliforniaBerkeleyCA94720USA

The Belt and Road Initiative(BRI)is a massive,ambitious,long-term project initiated by the Chinese government,with participation from many other countries,to facilitate trade and improve logistics in an effort to promote global economic *** this paper,we identified the supply chain and logistics innovations linked to the *** innovations include new routes and modes for global trade,new supply chain design,reduction of cross-border logistics frictions,and entrepreneurial *** of some of these innovations are emerging,while new ones are being *** innovations can enable businesses to improve their operational performances and create economic *** the same time,to realize the full potentials of BRI,new work processes and technologies,incentive alignment,collaborations among businesses,and optimized plan-ning are *** provides great opportunities for researchers to explore how to overcome barriers and achieve the full values of BRI.

关键词： Belt and road initiative Supply chain management Logistics

GEOSS Platform data content and use

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International Journal of Digital Earth 2023年第1期16卷 715-740页

作者： Enrico Boldrini Stefano Nativi Jiri Hradec Mattia Santoro Paolo Mazzetti max Craglia National Research Council of Italy Institute of Atmospheric Pollution ResearchFlorenceIltaly Joint Research Centre B6 UnitIspraItaly

The GEOSS Platform is a key contribution to the goal of building the Global Earth Observation System of Systems(GEOSS).It enables a harmonized discovery and access of Earth observation data,shared online by heterogeneous organizations *** work analyzes both what is made available in the GEOSS Platform by the data providers and how users are utilizing it including multiyear trends,updating a previous analysis published in *** present statistics derive from a 2021 EOValue report funded by the European *** offer of GEOSS Platform data has been the object of various analyses,including data provider characterization,data sharing trends,and data characterization(comprising metadata quality analysis,thematic analysis,responsible party identification,spatial–temporal coverage).GEOSS data demand has also been the object of several analyses,including data consumer characterization,utilization trends,and requested data characterization(comprising thematic analysis,spatial–temporal coverage,and popularity).Among thefindings,a large amount of shared data,mostly from satellite sources,emerges with an issue of low metadata quality and related discovery ***,the trend in usage is ***,the progressive disconnection of the GEOSS platform from its data Providers and Users and other possible causes are also reported.

关键词： Earth observations GEOSS System-of-Systems geospatial data quality discovery service

Cloning and expression of the first gene for biodegrading microcystin LR by Sphingopyxis ***-05

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Journal of Environmental Sciences 2012年第10期24卷 1816-1822页

作者： Hai Yan Huasheng Wang Junfeng Wang Chunhua Yin Song max Xiaolu Liu Xueyao Yin School of Chemical and Biological Engineering University of Science and Technology BeijingBeijing 100083China School of Architectural and Surveying&Mapping Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Harmful cyanobacterial blooms are a growing environmental problem worldwide in natural waters, the biodegradation is found to be the most efficient method for removing microcystins 0VICs） produced by harmful cyanobacteria. Based on the isolation of a promising bacterial strain of Sphingopyxis sp. USTB-05 for biodegrading MCs, we for the first time cloned and expressed a gene USTB-O5-A （HM245411） that is responsible for the first step in the biodegradation of microcystin LR （MC-LR） in E. coli DH5ct, with a cloning vector of pGEM-T easy and an expression vector of pGEX-4T-1, respectively. The cell-free extracts （CE） of recombinant E. coli DH5ct containing USTB-O5-A had high activity for biodegrading MC-LR. The initial MC-LR concentration of 40 mg/L was completely biodegraded within 1 hr in the presence of CE with a protein concentration of 0.35 mg/mL. Based on an analysis of the liquid chromatogram-mass spectrum （LC-MS）, the enzyme encoded by gene USTB-O5-A was found to be active in cleaving the target peptide bond between 3-amino-9-methoxy-2,6, 8-trimethyl-10-phenyl-deca-4,6-dienoic acid （Adda） and arginine of MC-LR, and converting cyclic MC-LR to linear MC-LR as a first product that is much less toxic than parent MC-LR, which offered direct evidence for the first step on the pathway of MC-LR biodegradation by Sphingopyxis sp. USTB-05.

关键词： microcystin LR Sphingopyxis sp. USTB-05 biodegradation gene

Coupled Models and Parallel Simulations for Three-Dimensional Full-Stokes Ice Sheet Modeling

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Numerical Mathematics(Theory,Methods and Applications) 2011年第3期4卷 396-418页

作者： Huai Zhang Lili Ju max Gunzburger Todd Ringler Stephen Price Department of Mathematics University of South CarolinaColumbiaSC 29208USA. Department of Scientific Computing Florida State UniversityTallahasseeFL 32306USA. Theoretical Division Los Alamos National LaboratoryLos AlamosNM 87545USA. Laboratory of Computational Geodynamics Graduate University of Chinese Academy of SciencesBeijing100049China.

A three-dimensional full-Stokes computational model is considered for determining the dynamics,temperature,and thickness of ice *** governing thermomechanical equations consist of the three-dimensional full-Stokes system with nonlinear rheology for the momentum,an advective-diffusion energy equation for temperature evolution,and a mass conservation equation for ice-thickness ***,we discuss the variable resolution meshes,the finite element discretizations,and the parallel algorithms employed by the model *** solvers are integrated through a well-designed coupler for the exchange of parametric data between com*** discretization utilizes high-quality,variable-resolution centroidal Voronoi Delaunay triangulation meshing and existing parallel *** demonstrate the gridding technology,discretization schemes,and the efficiency and scalability of the parallel solvers through computational experiments using both simplified geometries arising from benchmark test problems and a realistic Greenland ice sheet geometry.

关键词： Ice sheet modeling nonlinear Stokes equation finite element method parallel implementation centroial Voronoi Delaunay meshes.

Transient voltage stresses in MMC-HVDC links-impulse analysis and novel proposals for synthetic laboratory generation

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High Voltage 2018年第2期3卷 115-125页

作者： Claudius Freye Simon Wenig max Goertz Thomas Leibfried Frank Jenau Institute of High Voltage Engineering TU Dortmund University44227 DortmundGermany Institute of Electrical Energy Systems and High-Voltage Technology Karlsruhe Institute of Technology(KIT)76131 KarlsruheGermany

To evaluate and optimise insulation coordination concepts for state of the art high-voltage direct current(HVDC)transmission systems,appropriate test voltage shapes are required for laboratory imitation of occurring *** especially transient voltages in the monopolar modular multilevel converter(MMC)-HVDC links show an extensive deviation from commonly applied switching impulse shapes,this study focusses on the analysis of over-voltages subsequent to direct current pole to ground ***,novel methods for synthetic laboratory test voltage generation are *** on simulated transients occurring during fault scenarios in different symmetrical monopolar±320 kV MMC-HVDC schemes,curve fitting,and related analysis techniques are used in order to compare simulated over-voltages with standard test voltage ***,these techniques further allow the identification of novel relevant impulse ***,design considerations for the generation of non-standard impulses based on single-stage circuits are derived and *** synthetically generated voltages may,later on,provide the basis for future investigations on related dielectric effects caused by those non-normative over-voltages.

关键词： analysis insulation transient

Highly conformable chip-in-foil implants for neural applications

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Microsystems & Nanoengineering 2023年第3期9卷 245-257页

作者： Thomas Stieglitz Calogero Gueli Julien Martens Niklas Floto max Eickenscheidt Markus Sporer Maurits Ortmanns Laboratory for Biomedical Microtechnology Department of Microsystems Engineering-IMTEKUniversity of FreiburgD-79110 FreiburgGermany BrainLinks-BrainTools//IMBIT University of FreiburgD-79110 FreiburgGermany Institute of Microelectronics University of UlmD-89081 UlmGermany

Demands for neural interfaces around functionality,high spatial resolution,and longevity have recently *** requirements can be met with sophisticated silicon-based integrated *** miniaturized dice in flexible polymer substrates significantly improves their adaptation to the mechanical environment in the body,thus improving the systems’structural biocompatibility and ability to cover larger areas of the *** work addresses the main challenges in developing a hybrid chip-in-foil neural *** considered(1)the mechanical compliance to the recipient tissue that allows a long-term application and(2)the suitable design that allows the implant’s scaling and modular adaptation of chip *** element model studies were performed to identify design rules regarding die geometry,interconnect routing,and positions for contact pads on *** edge fillets in the die base shape proved an effective measure to improve die-substrate integrity and increase the area available for contact ***,routing of interconnects in the immediate vicinity of die corners should be avoided,as the substrate in these areas is prone to mechanical stress *** pads on dice should be placed with a clearance from the die rim to avoid delamination when the implant conforms to a curvilinear body.A microfabrication process was developed to transfer,align,and electrically interconnect multiple dice into conformable polyimide-based *** process enabled arbitrary die shape and size over independent target positions on the conformable substrate based on the die position on the fabrication wafer.

关键词： neural positions shape