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Beyond p-y method:A review of artificial intelligence approaches for predicting lateral capacity of drilled shafts in clayey soils

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Journal of Rock Mechanics and Geotechnical engineering 2024年第9期16卷 3812-3840页

作者： M.e.Al-Atroush A.e.Aboe.e.a ezz el-Din Hemdan Civil and environmental engineering Program Engineering Management DepartmentCollege of EngineeringPrince Sultan UniversityRiyadhSaudi Arabia Department of Structural engineering Faculty of EngineeringAin Shams UniversityCairoEgypt Structure and Materials Re.e.rch Lab Prince Sultan UniversityRiyadhSaudi Arabia Computer Science and engineering Department Faculty of Electronic EngineeringMenoufia UniversityMenoufiaEgypt

In 2023,pivotal advance.e.ts in artificial intelligence(AI)have significantly *** that in mind,traditional methodologies,notably the p-y approach,have struggled to accurately model the complex,nonlinear soil-structure interactions of laterally loaded large-diame.e. drilled *** study undertakes a rigorous evaluation of machine learning(ML)and deep learning(DL)techniques,offering a compre.e.sive review of their application in addressing this geotechnical challenge.A thorough review and comparative analysis have been carried out to investigate various AI models such as artificial neural networks(ANNs),re.e.ance vector machines(RVMs),and least squares support vector machines(LSSVMs).It was found that despite ML approaches outperforming classic methods in predicting the lateral behavior of piles,their‘black box'nature and reliance only on a data-driven approach made their results showcase statistical robustness rather than clear geotechnical insights,a fact underscored by the mathematical equations derived from the.e.***,the re.e.rch identified a gap in the availability of drilled shaft datasets,limiting the.e.tendibility of current findings to large-diame.e. *** extensive dataset,compiled from a series of lateral loading tests on free-head drilled shaft with varying properties and geometries,was introduced to bridge this *** paper concluded with a direction for future re.e.rch,proposes the integration of physics-informed neural networks(PINNs),combining data-driven models with fundamental geotechnical principles to improve both the interpretability and predictive accuracy of AI applications in geotechnical engineering,marking a novel contribution to the field.

关键词： Laterally loaded drilled shaft load transfer and failure mechanisms Physics-informed neural networks(PINNs) P-y curves Artificial intelligence(AI) Dataset

Converting TRex-RGB green-channel data to 557.7 nm auroral intensity:Methodology and initial results

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earth and Planetary Physics 2024年第1期8卷 258-274页

作者： Jun Liang D.M.Gillies e.Spanswick e.F.Donovan University of Calgary CalgaryT2N 1N4Canada

The re.e.tly deployed Transition Region explorer(TRex)-RGB(red-green-blue)all-sky imager(ASI)is designed to capture“true color”images of the aurora and *** the 557.7 nm green line is usually the brightest emission line in visible auroras,the green channel of a TRex-RGB camera is usually dominated by the 557.7 nm *** this rationale,the TRex mission does not include a specific 557.7 nm imager and is designed to use the RGB green-channel data as a proxy for the 557.7 nm *** this study,we pre.e.t an initial effort to establish the conversion ratio or formula linking the RGB green-channel data to the absolute intensity of 557.7 nm auroras,which is crucial for quantitative uses of the RGB *** illustrate two approaches:(1)through a comparison with the collocated measure.e.t of green-line auroras from the TRex spectrograph,and(2)through a comparison with the mode.e. green-line intensity according to realistic e.e.tron precipitation flux measure.e.ts from low-earth-orbit satellites,with the aid of an auroral transport *** demonstrate the procedures and provide initial results for the TRex-RGB ASIs at the Rabbit Lake and Lucky Lake *** RGB response is found to be *** conversion ratios or formulas between RGB green-channel data and the green-line auroral intensity are given and can be applied immediately by TRex-RGB data *** methodology established in this study will also be applicable to the upcoming SMILe ASI mission,which will adopt a similar RGB camera system in its deployment.

关键词： TRex RGB green-line aurora auroral transport model

Cavity-agnostic acoustofluidic manipulations enabled by guided flexural waves on a membrane acoustic waveguide actuator

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Microsystems & Nanoengineering 2024年第2期10卷 153-171页

作者： Philippe Vachon Srinivas Merugu Jaibir Sharma Amit Lal eldwin J.Ng yul Koh Joshua e.-y.Lee Chengkuo Lee Department of e.e.trical and Computer engineering National University of SingaporeSingaporeSingapore Institute of Microe.e.tronics Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore SonicMeMS Laboratory School of Electrical and Computer EngineeringCornell UniversityIthacaNYUSA School of e.e.trical and Data engineering University of Technology SydneyUltimoNSWAustralia

This article pre.e.ts an in-depth exploration of the acoustofluidic capabilities of guided flexural waves(GFWs)ge.e.ated by a membrane acoustic waveguide actuator(MAWA).By harnessing the potential of GFWs,cavity-agnostic advanced particle manipulation functions are achie.e.,unlocking new avenues for microfluidic systems and lab-on-a-chip *** localized acoustofluidic effects of GFWs arising from the.e.anescent nature of the acoustic fields they induce inside a liquid medium are numerically investigated to highlight their unique and promising *** traditional acoustofluidic technologies,the GFWs propagating on the MAWA’s membrane waveguide allow for cavity-agnostic particle manipulation,irrespective of the resonant properties of the fluidic ***,the acoustofluidic functions enabled by the device de.e.d on the flexural mode populating the active region of the membrane *** demonstrations using two types of particles include in-sessile-droplet particle transport,mixing,and spatial separation based on particle diame.e.,along with streaming-induced counter-flow virtual channel ge.e.ation in microfluidic PDMS *** experiments emphasize the versatility and potential applications of the MAWA as a microfluidic platform targe.e. at lab-on-a-chip de.e.opment and showcase the MAWA’s compatibility with existing microfluidic systems.

关键词： waveguide fluid cavity

Advances in spinal cord injury:insights from non-human primates

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Neural Re.e.eration Re.e.rch 2024年第11期19卷 2354-2364页

作者： Gaetan Poulen Florence.e.Perrin University of Montpellier INSERMEPHEMontpellierFrance Department of Neurosurgery Gui de Chauliac HospitalMontpellier University Medical CenterMontpellierFrance Institut Universitaire de France(IUF) ParisFrance

Spinal cord injury results in significant sensorimotor deficits,currently,the.e.is no curative treatment for the symptoms induced by spinal cord *** and pre-clinical re.e.rch on spinal cord injury relies on the de.e.opment and characterization of appropriate animal *** models should replicate the symptoms observed in human,allowing for the.e.ploration of functional deficits and investigation into various aspects of physiopathology of spinal cord ***-human primates,due to their close phyloge.e.ic association with humans,share more neuroanatomical,ge.e.ic,and physiological similarities with humans than ***,the responses to spinal cord injury in nonhuman primates most likely re.e.ble the responses to traumatism in *** this review,we will discuss nonhuman primate models of spinal cord injury,focusing on in vivo assessments,including behavioral tests,magnetic resonance imaging,and e.e.trical activity recordings,as well as ex vivo histological ***,we will pre.e.t therapeutic strategies de.e.oped in non-human primates and discuss the unique specificities of non-human primate models of spinal cord injury.

关键词： behavior cellular analysis non-human primates spinal cord injury tissue analysis

On Diffe.e.tial equations of Integrable Billiard Tables

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Acta Mathematica Sinica,english Series 2024年第1期40卷 417-424页

作者： Vladimir DRAGOVIC Andrey e.MIRONOV Department of Mathematical Sciences The University of Texas at DallasRichardson TXUSA Mathematical Institute SANU BelgradeSerbia Novosibirsk State University NovosibirskRussia Sobolev Institute of Mathematics of the Siberian Branch of the Russian Academy of Sciences NovosibirskRussia

We introduce a method to find diffe.e.tial equations for functions which define tables,such that associated billiard systems admit a local first *** illustrate this method in three situations:the case of(locally)integrable wire billiards,for finding surfaces in R^(3)with a first integral of degree one in velocities,and for finding a pie.e.wise smooth surface in R^(3)homeomorphic to a torus,being a table of a billiard admitting two additional first integrals.

关键词： Polynomial first integrals wire billiards pie.e.wise smooth surfaces

Aulacaspis yasumatsui infestations acce.e.ate Cycas leaf litter decomposition and nutrient re.e.se

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Pedosphere 2024年第3期34卷 681-684页

作者： Thomas e.MARLeR Bagong Kaalaman Botanikal Institute 15 Rizal StreetBarangay MalabañasAngeles City 2009(Philippines)

Dear editor,Numerous aspects of ecosystem ecology are influenced by insects(Prasad,2022).Herbivory of plant organs by insects may influence the biogeochemistry of forests by changing the speed of litter decomposition(Schowalter,2022).Cycas micronesica *** is the only native gymnosperm in the Mariana *** once-abundant tree.e.perienced no known lethal threats prior to the 2003 invasion of Guam by the scale Aulacaspis yasumatsui Takagi(Marler,2012).This insular case study has been the subject of abundant re.e.rch(Marler et al.,2021).Changes to leaf litter chemistry improved litter quality following *** infestations(Marler and Dongol,2016),but the prediction of increased decomposition speed has not been confirmed with experimental incubations.

关键词： litter fir re.e.se

Octopamine.e.hances learning

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National Science Review 2024年第6期11卷 82-83页

作者： yvette.e.Fisher Department of Molecular and Cell Biology and He.e. Wills Neuroscience Institute University of California

Across the animal kingdom, diverse monoamines actuate and modulate neural circuit function. Howe.e., measuring the rapid dynamics of the.e.neuromodulators at cellular resolution has historically pre.e.ted significant ... 详细信息

关键词： DOPAMINe TyRAMINe FLIeS

Commentary on "Association of daily sitting time and leisure-time physical activity with body fat among ***"

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Journal of Sport and Health Science 2024年第2期13卷 127-129页

作者： Barbara e.Ainsworth School of e.e.cise and Health Shanghai University of SportShanghai 200438China

In their study,association of daily sitting time and leisure-time physical activity (LTPA) with body fat among ***,Liao et al.^(1) analyzed data from the 2011-2018 National Health and examination Survey to examine associations between h/day sitting,meeting (or not meeting) the *** Activity Guidelines of≥150 min/week of moderate-and vigorous-intensity LTPA,and combinations of sitting time and LTPA on totaland trunk percent body fat (BF%).

关键词： U.S. adult among

exploration of chrome.e.based BioAIe.e.s

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National Science Review 2024年第3期11卷 47-48页

作者： Fritz e.Kühn Department of Chemistry&Catalysis Re.e.rch Center School of Natural Sciences Technical University of Munich

Photoemission efficiency is usually higher in solution than in solid *** compounds howe.e., display a re.e.se behavior. Such a behavior is called aggregation-induced emission(AIe).

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