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Development of deep neural network model to predict the compressive strength of FRCM confined columns

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Frontiers of Structural and Civil Engineering 2022年第10期16卷 1213-1232页

作者： Khuong LE-NGUYEN quyen Cao MINH Afaq AHMAD Lanh Si HO Department of Civil Engineering University of Transport TechnologyHanoi 100000Vietnam Faculty of Arts and Design University of CanberraBruce ACT 2617Australia Department of Civil Engineering University of Engineering and TechnologyTaxila 47080Pakistan Graduate School of Advanced Science and Engineering Hiroshima UniversityHiroshima 739-8527Japan

The present study describes a reliability analysis of the strength model for predicting concrete columns confinement influence with Fabric-Reinforced Cementitious Matrix(FRCM).through both physical models and Deep Neural Network model(artificial neural network(ANN)with double and triple hidden layers).The database of 330 samples collected for the training model contains many important parameters,i.e.,section type(circle or square),corner radius rc,unconfined concrete strength fco,thickness nt,the elastic modulus of fiber Ef,the elastic modulus of mortar *** results revealed that the proposed ANN models well predicted the compressive strength of FRCM with high prediction *** ANN model with double hidden layers(APDL-1)was shown to be the best to predict the compressive strength of FRCM confined columns compared with the ACI design code and five physical ***,the results also reveal that the unconfined compressive strength of concrete,type of fiber mesh for FRCM,type of section,and the corner radius ratio,are the most significant input variables in the efficiency of FRCM confinement *** performance of the proposed ANN models(including double and triple hidden layers)had high precision with R higher than 0.93 and RMSE smaller than 0.13,as compared with other models from the literature available.

关键词： FRCM deep neural networks confinement effect strength model confined concrete

Scouring of a granular bed by dam break: Experimental study and numerical simulation by a VOF-LPT coupling

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International Journal of Sediment Research 2023年第3期38卷 432-445页

作者： quyen Thi Le Nguyen Viet Dung Nguyen Patrice Coorevits EPROAD Research Unit University of Picardie Jules Verne IUT of Aisne Hanoi University of Civil Engineering

The first part of the research reported here consists of an experimental campaign to study the scouring of a granular bed(glass beads, sand) induced by a dam break in an open channel. Two configurations are considered: with and without cylinders. In the second part of this study, the volume of fluid method coupled with the shear stress transport turbulent model and the lagrangian particle tracking method is used to simulate the local scour processes. The four-way coupling is realized by considering the drag force and collisions between particles. Using a vortex map and velocity profiles, the flow dynamics and scour pattern can be studied. The current research also focuses on the profiles of the erodible particle bed and the sediment transport rate to study the effects of a cylinder on local scour. The presence of the cylinder increases the experimental erosion depth by up to 42%. It was found that for relatively close particle diameters(2 and 3 mm), a granular bed with larger porosity(larger diameter) erodes the *** and numerically it was found that the center of the granular bed experiences more erosion compared to the channel sides. In the last part of the research, comparisons between the numerical results and the experimental data allowed risk areas to be identified and the roles of porosity,sediment density, and flow dynamics on erosion to be identified.

关键词： Volume of fluid Lagrangian particle tracking Scour Granular bed Cylinder Dam break

Stem cell-based therapy for human diseases

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Signal Transduction and Targeted Therapy 2022年第9期7卷 3242-3282页

作者： Duc M.Hoang Phuong T.Pham Trung Q.Bach Anh T.L.ngo quyen T.Nguyen Trang T.K.Phan Giang H.Nguyen Phuong T.T.Le Van T.Hoang Nicholas R.Forsyth Michael Heke Liem Thanh Nguyen Department of Research and Development Vinmec Research Institute of Stem Cell and Gene TechnologyVinmec Healthcare SystemHanoiVietnam Department of Cellular Therapy Vinmec High.Tech CenterVinmec Healthcare SsystemHanoiVietnam Institute for Science&Technology in Medicine Keele UniversityKeeleUK a Department of Biology Stanford UniversityStanfordCAUSA

Recent advancements in stem cell technology open a new door for patients suffering from diseases and disorders that have yet to be *** cell-based therapy,including human pluripotent stem cells(hPsCs)and multipotent mesenchymal stem cells(MSCs),has recently emerged as a key player in regenerative *** are defined as self-renewable cell types conferring the ability to differentiate into various cellular phenotypes of the human body,including three germ *** are multipotent progenitor cells possessing self-renewal ability(limited in vitro)and differentiation potential into mesenchymal lineages,according to the International Society for Cell and Gene Therapy(ISCT).This review provides an update on recent clinical applications using either hPSCs or MSCs derived from bone marrow(BM),adipose tissue(AT),or the umbilical cord(UC)for the treatment of human diseases,including neurological disorders,pulmonary dysfunctions,metabolic/endocrine-related diseases,reproductive disorders,skin burns,and cardiovascular ***,we discuss our own clinical trial experiences on targeted therapies using MsCs in a clinical setting,and we propose and discuss the MSC tissue origin concept and how MSC origin may contribute to the role of MSCs in downstream applications,with the ultimate objective of facilitating translational research in regenerative medicine into clinical *** mechanisms discussed here support the proposed hypothesis that BM-MSCs are potentially good candidates for brain and spinal cord injury treatment,AT-MSCs are potentially good candidates for reproductive disorder treatment and skin regeneration,and UC-MsCs are potentially good candidates for pulmonary disease and acute respiratory distress svndrometreatment.

关键词： diseases distress treatment

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跨文化传播视阈下越南中学中国文学教学研究

跨文化传播视阈下越南中学中国文学教学研究

作者： LAI THI quyen 华南理工大学

学位级别：硕士

中越两国关系密切,山水相连,越南历史上有长达一千多年的时间是与中国同步发展。地理因素、历史因素让中越两国的文化变成现在的大同小异,这些理应让越南人在接触中国文学与文化的过程容易得多。事实上,现在中国文化在越南的传播越来越... 详细信息

中越两国关系密切,山水相连,越南历史上有长达一千多年的时间是与中国同步发展。地理因素、历史因素让中越两国的文化变成现在的大同小异,这些理应让越南人在接触中国文学与文化的过程容易得多。事实上,现在中国文化在越南的传播越来越普遍,在越南语文教学过程中,中国文学作品部分也越来越受重视,入选教材的作品都很有代表性和系统性,安排的上课时间也越来越多。但越南中学语文教授中国文学对中国文化的传播效果到底如何,却缺乏具体的系统考察和评价机制。本文旨在通过在梳理中国文学与文化在越南传播现状的基础上,重点分析越南中学语文教学传播中国文学与文化的特征与作用,并借助问卷调查与访谈调查相结合的研究方法,在跨文化视阈下探究越南中学语文教学的中国文学与文化的传播效果、问题与反思对策。本文具体通过对越南中学生学习中国文学作品的兴趣、行为、态度、习惯方式等方面的调查,分析了越南中学生对中国文学的接受态度与习得认知;通过对越南中学语文中的中国文学教学满意度的调查,分析越南中学语文教学在中国文学传播过程中存在的问题;通过学生对中国文学作品习得效果的自我评价和问卷测试,探究越南中学语文教学中的中国文学对越南中学生的传播效果。进而基于跨文化传播特点剖析越南中学语文教学中在中国文学教学方面存在的问题与成因,给出跨文化视阈下越南中学语文教学中的中国文学教学对策建议。通过研究发现,越南中学生对中国文学作品的整体掌握程度较好的学生比例占46.8%。从学生掌握最好的中国文学样式来看,古诗词和神话故事的内容掌握最好;从学生对中国文学作品的领会能力来看,几乎有一半以上学生对中国文学作品的领会一般,少部分学生对中国文学作品的领会很好。除了教材中的中国文学作品以外,有27.2%的学生会自学习得一些课外文学作品。有42.7%的学生表示,通过中国文学作品对中国历史文化产生了兴趣。以上这些说明中国文学作品虽然在越南中学语文教学中分量和意义较大,但在实际传播接受效果方面仍不尽理想。导致这样结果的主要原因一方面是教学主体在跨文化传播方面认知与能力问题,另一方面是跨文化传播文学载体翻译后的语言问题。对此,应加强对越南中学语文教师的跨文化传播能力培训,在教学过程中加强对中越文学和历史文化异同比较,以促进越南中学生对中国文学和文化的深入理解;增加选编符合越南传统人文精神的中国文学作品,改善中国文学作品编排;构建多元化的越南中学中国文学的教学评价机制,准确把握越南中学生对中国文学的接受效果。

关键词：文化传播越南中学语文中国文学教学教学效果

Acceptability,usefulness,and satisfaction with a web-based video-tailored physical activity intervention:The TaylorActive randomized controlled trial

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Journal of Sport and Health Science 2022年第2期11卷 133-144,I0001页

作者： Stephanie Schoeppe Mitch J.Duncan Ronald C.Plotnikoff W.Kerry Mummery Amanda Rebar Stephanie Alley quyen To Camille E.Short Corneel Vandelanotte Central Queensl and University School of HealthMedical and Applied SciencesAppleton InstitutePhysical Activity Research GroupRockhamptonQLD 4702Australia The University of Newcastle College of HealthMedicineand WellbeingSchool of Medicine&Public HealthNewcastleNSW 2308Australia The University of Newcastle Priority Research Centre for Physical Activity and NutritionNewcastleNSW 2308Australia The University of Newcastle Priority Research Centre for Physical Activity and NutritionCollege of Human and Social FuturesNewcastleNSW 2308Australia The University of Alberta Faculty of KinesiologySport and RecreationEdmontonAB T6G 2R3Canada The University of Melbourne Faculty of MedicineDentistry and Health ScienceMelbourne School of Psychological SciencesMelbourneVIC 3010Australia

Purpose:This study aimed to examine the usage,acceptability,usability,perceived usefulness,and satisfaction of a web-based video-tailored physical activity(PA)intervention(TaylorActive)in ***:In 2013-2014,501 Australian adults aged 18+years were randomized into a video-tailored intervention,text-tailored intervention,or control *** 3 months,the intervention groups received access to 8 sessions of personally tailored PA advice delivered via the TaylorActive *** the delivery method differed between the intervention groups:video-tailored *** Analytics and telephone surveys conducted at post intervention(3 months)were used to assess intervention usage,acceptability,usability,perceived usefulness,and *** and qualitative process data were analyzed using descriptive statistics and thematic content ***:Of 501 recruited adults,259 completed the 3-month post-intervention survey(52%retention).Overall,usage of the TaylorActive website with respect to number of website visits,intervention sessions,and action plans completed was modest in both the video-tailored(7.6士7.2 visits,mean±SD)and text-tailored(7.3±5.4 visits)groups with no significant between-group *** majority of participants in all groups used the TaylorActive website less than once in 2 weeks(66.7%video-tailored,62.7%text-tailored,87.5%control;p<0.001).Acceptability was rated mostly high in all groups and in some instances,significantly higher in the intervention groups compared to the control group(p<0.010).Usability was also rated high;mean Systems Usability Scores were 77.3(video-tailored),75.7(text-tailored),and 74.1(control)with no significant between-group *** usefulness of the TaylorActive intervention was low,though mostly rated higher in the intervention groups compared to the control group(p<0.010).Satisfaction with the TaylorActive website was *** in both intervention groups liked i

关键词： Online Physical activity Process evaluation Program Video-based

Data driven discovery of conjugated polyelectrolytes for optoelectronic and photocatalytic applications

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npj Computational Materials 2021年第1期7卷 641-649页

作者： Yangyang Wan Fernando Ramirez Xu Zhang Thuc-quyen Nguyen Guillermo C.Bazan Gang Lu Department of Physics and Astronomy California State University NorthridgeNorthridgeCaliforniaUSA Department of Chemistry and Biochemistry University of CaliforniaSanta BarbaraCaliforniaUSA

Conjugated polyelectrolytes(CPEs),comprised of conjugated backbones and pendant ionic functionalities,are versatile organic materials with diverse ***,the myriad of possible molecular structures of CPEs render traditional,trial-and-error materials discovery strategy ***,we tackle this problem using a data-centric approach by incorporating machine learning with high-throughput first-principles *** systematically examine how key materials properties depend on individual structural components of CPEs and from which the structure–property relationships are *** means of machine learning,we uncover structural features crucial to the CPE properties,and these features are then used as descriptors in the machine learning to predict the properties of unknown ***,we discover promising CPEs as hole transport materials in halide perovskite-based optoelectronic devices and as photocatalysts for water *** work could accelerate the discovery of CPEs for optoelectronic and photocatalytic applications.

关键词： conjugated backbone photocatalytic

A Cell-Based Smoothed Finite Element Method for Modal Analysis of Non-Woven Fabrics

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Computers, Materials & Continua 2021年第6期67卷 2765-2795页

作者： Nguyen T.quyen N.Dourado A.J.P.Gomes F.B.N.Ferreira C2T—Centro de Ciência e Tecnologia Têxtil Departamento de Engenharia TêxtilUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal CMEMS-UMinho Departamento de Engenharia MecânicaUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal Department of Computer Science Universidade da Beira InteriorConvento de Sto.AntónioCovilhã6201-001Portugal Instituto de Telecomunicações R.Marquês deÁvila e BolamaCovilhã6201-001Portugal

The combination of a 4-node quadrilateral mixed interpolation of tensorial components element(MITC4)and the cell-based smoothed finite element method(CSFEM)was formulated and implemented in this work for the analysis of free vibration and unidirectional buckling of shell *** formulation was applied to numerous numerical examples of non-woven *** CSFEM schemes do not require coordinate transformation,spurious modes and numerical instabilities are prevented using bilinear quadrilateral element subdivided into two,three and four smoothing *** improvement of the original CSFEM formulation was made regarding the calculation of outward unit normal vectors,which allowed to remove the integral operator in the strain smoothing *** procedure conducted both to the simplification of the developed formulation and the reduction of computational cost.A wide range of values for the thickness-to-length ratio and edge boundary conditions were *** developed numerical model proved to overcome the shear locking phenomenon with success,revealing both reduced implementation effort and computational cost in comparison to the conventional FEM *** cell-based strain smoothing technique used in this work yields accurate results and generally attains higher convergence rate in energy at low computational cost.

关键词： Mindlin-Reissner theory of plates shear-locking gradient/strain smoothing technique non-woven fabric

Effect of land use change on water discharge in Srepok watershed,Central Highland,Viet Nam

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International Soil and Water Conservation Research 2014年第3期2卷 74-86页

作者： Nguyen Thi ngoc quyen Nguyen Duy Liem Nguyen Kim Loi Tay Nguyen University Viet Nam.567 Le Duan streetBuon Ma Thuot CityDak Lak Province Nong Lam University Viet Nam.Linh Trung WardThu Duc districtHo Chi Minh City

Srepok watershed plays an important role in Central Highland in Viet *** impacts to developing social-economic ***,it is necessary to research elements which impact to natural resources in this *** Soil and Water Assessment Tool(SWAT)model and Geography Information System(GIS)were used to simulate water discharge in the Srepok *** objectives of the research were to apply GIS and SWAT model for simulation water discharge and then,we assessed land use change which impacted on water discharge in the *** observed stream flow data from Ban Don Stream gauge station was used to calibrate for the period from 1981 to 2000 and then validate for the period from 2001 to *** using SWAT-CUP software to calibration,NSI reached 0.63 and R square value achieved 0.64 from 2004 to 2008 in calibration and NSI gained good level at 0.74 and R square got 0.75 from 2009 to 2012 in validation step at Ban Don *** that,land cover in 2010 was processed like land cover in 2000 and set up SWAT model *** simulated water discharge in scenario 1(land use 2000)was compared with scenario 2(land use 2010),the simulation result was not significant difference between two scenarios because the change of area of land use was not much enough to affect the fluctuation of water ***,the effect of land cover on water resource could be seen clearly via total water *** percentage of surface flow in 2000 was twice times more than in 2010;retard and base flow in 2000 was slightly more than in ***,decreased surface flow,increased infiltration capacity of water and enriched base flow resulted in the growth of land cover.

关键词： Water discharge Land use change GIS SWAT model Simulations

MicroRNA-22 inhibits proliferation and promotes differentiation of satellite cells in porcine skeletal muscle

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Journal of Integrative Agriculture 2020年第1期19卷 225-233页

作者： Hong quyen Dang XU Gu-li HOU Lian-jie XU Jian HONG Guang-liang Chingyuan Hu WANG Chong National Engineering Research Center for Breeding Swine Industry/Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding/College of Animal Science South China Agricultural UniversityGuangzhou 510642P.R.China Bac Giang Agricultural and Forestry University Bac Giang 26000Viet Nam Department of Human Nutrition Food and Animal SciencesCollege of Tropical Agriculture and Human ResourcesUniversity of Hawaii at ManoaHonoluluHI 96822USA

Pig is an important economic animal in China. Improving meat quality and meat productivity is a long time issue in animal genetic breeding. Micro RNAs(mi RNAs) are short non-coding RNAs that participate in various biological processes, such as muscle development and embryogenesis. mi R-22 differentially expresses in embryonic and adult skeletal muscle. However, the underlying mechanism is unclear. In this study, we investigated mi R-22 function in proliferation and differentiation of porcine satellite cells(PSCs) in skeletal muscle. Our data show that mi R-22 expressed in both proliferation and differentiated PSCs and is significantly upregulated(P<0.05) during differentiation. After treated with the mi R-22 inhibitor, PSCs proliferation was significantly increased(P<0.05), as indicated by the up-regulation(P<0.01) of cyclin D1(CCND1), cyclin B1(CCNB1) and down-regulation(P<0.05) of P21. Conversely, over-expression of mi R-22 resulted in opposite results. Differentiation of PSCs was significantly suppressed(P<0.05), evidenced by two major myogenic markers: myogenin(Myo G) and myosin heavy chain(My HC), after transfecting the PSCs with mi R-22 inhibitor. Opposite results were demonstrated in the other way around by transfection with mi R-22 mimics. In conclusion, the data from this study indicated that mi R-22 inhibited the PSCs proliferation but promoted their differentiation.

关键词： miR-22 skeletal muscle porcine satellite cells proliferation differentiation