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Design spectra including effect of rupture directivity in near-fault region

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Earthquake Engineering and Engineering Vibration 2006年第2期5卷 159-170页

作者：徐龙军 adrian Rodriguez-Marek 谢礼立 College of Engineering Ocean University of China Department of Civil and Environmental Engineering Washington State University Pullman WA 99164-2910 USA Professor School of Civil Engineering Harbin Institute of Technology

In order to propose a seismic design spectrum that includes the effect of rupture directivity in the near-fault region, this study investigates the application of equivalent pulses to the parameter attenuation relationships developed for near-fault, forward-directivity motions. Near-fault ground motions are represented by equivalent pulses with different waveforms defined by a small number of parameters （peak acceleration, A, and velocity V; and pulse period, Tv）. Dimensionless ratios between these parameters （e.g., ATv/V, VTv/D） and response spectral shapes and amplitudes are examined for different pulses to gain insight on their dependence on basic pulse waveforms. Ratios of ATv/V, VTv/D, and the ratio of pulse period to the period for peak spectral velocity （Tv-p） are utilized to quantify the difference between rock and soil sites for near-fault forward-directivity ground motions. The ATv/Vratio of recorded near-fault motions is substantially larger for rock sites than that for soil sites, while Tvp/Tv ratios are smaller at rock sites than at soil sites. Furthermore, using simple pulses and available predictive relationships for the pulse parameters, a preliminary model for the design acceleration response spectra for the near-fault region that includes the dependence on magnitude, rupture distance, and local site conditions are developed.

关键词： near-fault ground motion pulse attenuation relation velocity pulse period design spectrum

AI-Based Modeling and Data-Driven Evaluation for Smart Manufacturing Processes

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IEEE/CAA Journal of Automatica Sinica 2020年第4期7卷 1026-1037页

作者： Mohammadhossein Ghahramani Yan Qiao Meng Chu Zhou adrian O’Hagan James Sweeney the University College Dublin BelfieldDublin 4Ireland the Institute of Systems Engineering Macao University of Science and TechnologyMacaoChina the Helen and John C.Hartmann Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewarkNJ 07102 USA the Royal College of Surgeons in Ireland Dublin 8Ireland

Smart manufacturing refers to optimization techniques that are implemented in production operations by utilizing advanced analytics approaches. With the widespread increase in deploying industrial internet of things(IIOT) sensors in manufacturing processes, there is a progressive need for optimal and effective approaches to data *** machine learning and artificial intelligence to take advantage of manufacturing data can lead to efficient and intelligent automation. In this paper, we conduct a comprehensive analysis based on evolutionary computing and neural network algorithms toward making semiconductor manufacturing *** propose a dynamic algorithm for gaining useful insights about semiconductor manufacturing processes and to address various challenges. We elaborate on the utilization of a genetic algorithm and neural network to propose an intelligent feature selection algorithm. Our objective is to provide an advanced solution for controlling manufacturing processes and to gain perspective on various dimensions that enable manufacturers to access effective predictive technologies.

关键词： Artificial intelligence(AI) cyber physical systems feature selection genetic algorithms(GA) industrial internet of things(IIOT) machine learning neural network(NN) smart manufacturing

Random checkerboard based homogenization for estimating effective thermal conductivity of fully saturated soils

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第1期9卷 18-28页

作者： Dariusz Lydzba adrian Rózanski Magdalena Rajczakowska Damian Stefaniuk Department of Geotechnics HydrotechnicsUnderground and Hydraulic StructuresFaculty of Civil EngineeringWroclaw University of Science and TechnologyWybrzeze Wyspianskiego 27Wrocw50-370Poland

This paper proposes homogenization scheme for estimating the effective thermal conductivity of fully saturated soils. This approach is based on the random checkerboard-like microstructure. Two modeling scales and two modeling approaches are distinguished and used, i.e. microscale and mesoscale and 1-step and 2-step homogenizations, respectively. The 2-step homogenization involves sequential averaging procedure, i.e. first, at microscale, a mineralogical composition of soil skeleton is considered and averaging process results in estimation of the skeleton effective thermal conductivity, and then, at mesoscale, a random spatial packing of solid skeleton and pores via random checkerboard microstructure is modeled and leads to evaluation of the soil overall thermal conductivity. The 1-step homogenization starts directly at the mesoscale and homogenization procedure yields evaluation of the overall soil thermal conductivity. At the mesoscale, the distinct nature of soil skeleton, as composed of soil separates,is considered and random variability of soil is modeled via enriched random checkerboard-like *** approaches, i.e. 1-step and 2-step homogenizations, interrelate mineralogical composition with the soil texture characterized by the volume fractions of soil separates, i.e. sand, silt and clay. The probability density functions(PDFs) of thermal conductivity are assumed for each of the separates. The soil texture PDF of thermal conductivity is derived taking into consideration the aforementioned functions. Whenever the random checkerboard-like structure is used in averaging process, the Monte Carlo procedure is applied for estimation of homogenized thermal conductivity. Finally, the proposed methodology is tested against the laboratory data from our measurements as well as those available from literature.

关键词： Soil mechanics Micromechanics Effective thermal conductivity

Functional Interaction of the SNARE Protein NtSyp121 in Ca^2＋ Channel Gating, Ca^2＋ Transientsand ABA Signalling of Stomatal Guard Cells

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Molecular Plant 2008年第2期1卷 347-358页

作者： Sergei Sokolovski adrian Hills Robert A. Gay Michael R. Blatt Laboratory of Plant Physiology and Biophysics IBLS--Plant Sciences University of Glasgow Glasgow G12 8QQ UK Current address: Blackfriars 64 St Giles Oxford OX1 3LY UK

There is now growing evidence that membrane vesicle trafficking proteins, especially of the superfamily of SNAREs, are critical for cellular signalling in plants. Work from this laboratory first demonstrated that a soluble, inhibitory （dominant-negative） fragment of the SNARE NtSyp121 blocked K^＋ and CI^- channel responses to the stress-related hormone abscisic acid （ABA）, but left open a question about functional impacts on signal intermediates, especially on Ca^2＋-mediated signalling events. Here, we report one mode of action for the SNARE mediated directly through alterations in Ca^2＋ channel gating and its consequent effects on cytosolic-free [Ca^2＋] （[Ca^2＋]i） elevation. We find that expressing the same inhibitory fragment of NtSyp121 blocks ABA-evoked stomatal closure, but only partially suppresses stomatal closure in the presence of the NO donor, SNAP, which promotes [Ca^2＋]i elevation independently of the plasma membrane Ca^2＋ channels. Consistent with these observations, Ca^2＋ channel gating at the plasma membrane is altered by the SNARE fragment in a manner effective in reducing the potential for triggering a rise in [Ca^2＋]i, and we show directly that its expression in vivo leads to a pronounced suppression of evoked [Ca^2＋]i transients. These observations offer primary evidence for the functional coupling of the SNARE with Ca^2＋ channels at the plant cell plasma membrane and, because [Ca^2＋]i plays a key role in the control of K^＋ and CI^- channel currents in guard cells, they underscore an important mechanism for SNARE integration with ion channel regulation during stomatal closure.

关键词： Ca^2+ channel, hyperpolarization-activated abscisic acid membrane vesicle traffic cytosolic-free [Ca^2+]elevation Nicotiana plant pathogen defense.

Single-atom catalysts for the electrochemical reduction of carbon dioxide into hydrocarbons and oxygenates

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Carbon Energy 2024年第3期6卷 64-117页

作者： Karl adrian Gandionco Juwon Kim Lieven Bekaert Annick Hubin Jongwoo Lim Department of Chemistry Seoul National UniversitySeoulRepublic of Korea Research Group Electrochemical and Surface Engineering(SURF) Department of Materials and ChemistryVrije Universiteit BrusselBrusselsBelgium

The electrochemical reduction of carbon dioxide offers a sound and economically viable technology for the electrification and decarbonization of the chemical and fuel *** this technology,an electrocatalytic material and renewable energy-generated electricity drive the conversion of carbon dioxide into high-value chemicals and carbon-neutral *** the past few years,single-atom catalysts have been intensively studied as they could provide near-unity atom utilization and unique catalytic ***-atom catalysts have become one of the state-of-the-art catalyst materials for the electrochemical reduction of carbon dioxide into carbon ***,it remains a challenge for single-atom catalysts to facilitate the efficient conversion of carbon dioxide into products beyond carbon *** this review,we summarize and present important findings and critical insights from studies on the electrochemical carbon dioxide reduction reaction into hydrocarbons and oxygenates using single-atom *** is hoped that this review gives a thorough recapitulation and analysis of the science behind the catalysis of carbon dioxide into more reduced products through singleatom catalysts so that it can be a guide for future research and development on catalysts with industry-ready performance for the electrochemical reduction of carbon dioxide into high-value chemicals and carbon-neutral fuels.

关键词： electrocatalysis electrochemical CO_(2)reduction hydrocarbons oxygenates single-atom catalysts

Getting 'holistic' about land rehabilitation in hot arid regions

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Science China Earth Sciences 2002年第z1期45卷 109-114页

作者： adrian Williams curtin.edu.au) Centre for the Management of Arid Environments Locked Bag 22 Kalgoorlie WA 6430 Australia (email: A. Williams

The paper describes Western Australian examples and causes of land degradation. Itoutlines shortcomings in the methodologies used to rehabilitate these areas. From this a protocolis suggested for an ‘holistic' approa... 详细信息

关键词： vegetation, rehabilitation, arid regions, community participation.

Bidirectional relationship between gastrointestinal cancer and depression: The key is in the microbiota-gut-brain axis

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World Journal of Gastroenterology 2024年第48期30卷 5104-5110页

作者： Bryan adrian Priego-Parra Jose Maria Remes-Troche Digestive Physiology and Gastrointestinal Motility Laboratory Instituto de Investigaciones Médico-BiológicasUniversidad VeracruzanaVeracruz 91700Mexico

In this Editorial,we review the recent publication in the World Journal of Gastroen-terology,which explores the complex relationship between depression and gastric cancer and offers *** topics discussed include the microbiota-gut-brain axis,dysbiosis,and the influence of microbial metabolites in ***,we address toxic stress caused by hypothalamic-pituitary-adrenal axis dysregulation,psychological assessments,and future research *** Editorial aims to expand the understanding of the bidirectional relationship between depression and gastrointestinal cancer.

关键词： Gastric cancer Depression Psychogastroenterology Microbiota-gut-brain axis Mood disorders Dysbiosis

The bold sedentary behavior recommendations in the new Canadian guidelines: are they evidence-based? Response to “Sedentary Behavior Research Network members support new Canadian 24-Hour Movement Guideline recommendations”

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Journal of Sport and Health Science 2020年第6期9卷 482-484页

作者： Emmanuel Stamatakis adrian E.Bauman Charles Perkins Centre Faculty of Medicine and HealthSchool of Health SciencesUniversity of SydneySydneyNSW 2006Australia Charles Perkins Centre Faculty of Medicine and HealthSchool of Public HealthPrevention Research CollaborationUniversity of SydneySydneyNSW 2006Australia

Dear editor,We read with interest the commentary by Mark Tremblay and colleagues,1 which outlines the new 24-Hour Canadian sedentary behavior *** guidelines take the perspective of a continuum across the 24-h day,providing a vehicle for discussing physically active time,sitting and other sedentary time,as well as healthy sleep *** commentary 1 focuses on the sedentary behavior(SB)recommendations in these guidelines:(1)limiting sedentary time to8 h per day,(2)limiting recreational screen time to3 h,and(3)breaking up long periods of sitting as often as possible throughout the *** for this perspective was evidenced by a survey of a sample(n=126,6% of total)of Sedentary Behavior Research Network(SBRN)members2 indicating broad acceptance of these SB recommendations.1 In this response,we put this survey in context and discuss the evidence base underpinning these 3 Canadian sedentary-behavior recommendations.

关键词： limiting Canadian editor

Recent advances in transient imaging:A computer graphics and vision perspective

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Visual Informatics 2017年第1期1卷 65-79页

作者： adrian Jarabo Belen Masia Julio Marco Diego Gutierrez Universidad de Zaragoza-I3A Zaragoza 50018Spain

Transient imaging has recently made a huge impact in the computer graphics and computer vision *** capturing,reconstructing,or simulating light transport at extreme temporal resolutions,researchers have proposed novel techniques to show movies of light in motion,see around corners,detect objects in highly-scattering media,or infer material properties from a distance,to name a *** key idea is to leverage the wealth of information in the temporal domain at the pico or nanosecond resolution,infor-mation usually lost during the capture-time temporal *** paper presents recent advances in this field of transient imaging from a graphics and vision perspective,including capture techniques,analysis,applications and simulation.

关键词： Transient imaging Ultrafast imaging Time-of-flight