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Frontiers of Structural and Civil Engineering 2022年第7期16卷 928-945页

作者： Van Quan tran hai-Van thi MAI Thuy-Anh NGUyen hai-Bang LY Faculty of Civil Engineering University of Transport TechnologyHanoi 100000Vietnam

The compressive strength of self-compacting concrete(SCC)needs to be determined during the construction design *** paper shows that the compressive strength of SCC(CS of SCC)can be successfully predicted from mix design and curing age by a machine learning(ML)technique named the Extreme Gradient Boosting(XGB)algorithm,including non-hybrid and hybrid *** ML techniques,such as Linear regression(LR),K-Nearest Neighbors(KNN),Support Vector Machine(SVM),Decision Trees(DTR),Random Forest(RF),Gradient Boosting(GB),and Artificial Neural Network using two training algorithms LBFGS and SGD(denoted as ANN_LBFGS and ANN_SGD),are also compared with the XGB ***,the hybrid models of eight ML techniques and Particle Swarm Optimization(PSO)are constructed to highlight the reliability and accuracy of SCC compressive strength prediction by the XGB_PSO hybrid *** highest number of SCC samples available in the literature is collected for building the ML *** with previously published works’performance,the proposed XGB method,both hybrid and non-hybrid models,is the most reliable and robust of the examined techniques,and is more accurate than existing ML methods(R2=0.9644,RMSE=4.7801,and MAE=3.4832).Therefore,the XGB model can be used as a practical tool for engineers in predicting the CS of SCC.

关键词： compressive strength self-compacting concrete machine learning techniques particle swarm optimization extreme gradient boosting

奉祀天后圣母的研究--以越南芹苴市华人的天后圣母信仰为例

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妈祖文化研究 2024年第1期 25-33页

作者： [越南]阮福才陈氏金黄 FPT大学越南芹苴26132 坚江师范学院越南坚江83000

本文以芹苴市华人奉祀天后圣母为研究对象,探讨了这一文化的特征、形成原因和社会意义,分析了芹苴市华人奉祀天后圣母的组成要素、内在逻辑和外在表现发现,这一文化是华人社区对中国传统文化的继承和创新,也是对越南多元文化的融入和贡... 详细信息

本文以芹苴市华人奉祀天后圣母为研究对象,探讨了这一文化的特征、形成原因和社会意义,分析了芹苴市华人奉祀天后圣母的组成要素、内在逻辑和外在表现发现,这一文化是华人社区对中国传统文化的继承和创新,也是对越南多元文化的融入和贡献。本文认为,芹苴市华人奉祀天后圣母是华人社会意识的反映,也是华人社会实践的指导,体现了华人对生存环境的适应和改造。同时指出,天后圣母的当地信仰满足了华人的精神需求,增强了华人的社会凝聚力,促进了华人与越南社会的和谐共处。

关键词：越南华人妈祖文化跨文化交流

Successful containment of a COVID-19 outbreak in Bach Mai Hospital by prompt and decisive responses

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Asian Pacific Journal of Tropical Medicine 2021年第5期14卷 234-235页

作者： Van Minh Hoang thi Phuong Thao tran thi Ngoc Phuong Nguyen thi hai yen Nguyen Quang Tuan Nguyen Hanoi University of Public Health HanoiVietnam Bach Mai Hospital HanoiVietnam

In low-and middle-income countries,tertiary care hospitals frequently face an extremely heavy workload and shoulder an even heavier burden during the COVID-19 *** Mai Hospital(BMH),one of the leading tertiary hospitals in Vietnam,is on the frontline in the fierce battle against *** letter aims to describe how BMH tackles the COVID-19 outbreak in the hospitallevel battle,which could support policymakers in time-management and well-preparation for this unpredictable pandemic.

关键词： prompt income policy

The New Chinese Immigrations in Laos Present-day

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International Relations and Diplomacy 2017年第12期5卷 728-735页

作者： tran thi hai yen Vietnam Academy of Social Sciences Hanoi Vietnam

Laos was once unique in Southeast Asia for its remarkably small overseas Chinese communities. Most of them fled this country when the communist forces seized power in 1975. Since Laos opened its economy in 1986, the Chinese in Laos have been able to develop in many areas. Especially, the visit of Premier LI Peng to Vientiane in 1990 marked a turning point in China-Laos relations. Unlike Cambodia, the reawakening of a Chinese community in Laos did not come from the Huaqiao, this arose from a new cycle of immigrants, who started pouring into northern Laos in the late 1990s at an unprecedented scale. Compared with other Southeast Asian nations, the Chinese in Laos are less in number and weaker in economic power. In this study, we focus on （1） Analysis the ways of the new Chinese immigrants in Laos; （2） Assess the role of new Chinese immigrants in the process of China increasing their influence in Laos and how Laos response to this issue; and （3） The trend of new Chinese immigrants in Laos in the near future. Firstly, the rapid of Chinese investment to Laos in the last two decades is the most important factor driving the Chinese migrants into this country. The first new Chinese immigrants arrived in the mid-1990s as workers or technicians on road construction projects and as part of the industrial cooperation between Yunnan and the northern provinces of Laos. Since the 2000s, China has been pouring aid and investment into Laos. Chinese companies are involved in almost all areas of this country＇s economy, from hydropower to mining, agriculture, service, and hospitality. The increasing of Chinese exports, investment, aids and Chinese contracted project constructions in Laos led to mass Chinese immigrants going to Laos to work in all the economic sectors which the Chinese are involved in this country. Most of them chose to stay on and started their own businesses. Secondly, the wave of new Chinese immigrants in Laos helps Chinese government to relieve the pressure of solvi

关键词： Chinese immigration Laos economic relation investment

Improved flood susceptibility mapping using a best first decision tree integrated with ensemble learning techniques

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Geoscience Frontiers 2021年第3期12卷 333-342页

作者： Binh Thai Pham Abolfazl Jaafari tran Van Phong Hoang Phan hai yen tran thi Tuyen Vu Van Luong Huu Duy Nguyen Hiep Van Le Loke Kok Foong University of transport Technology Ha Noi 100000Viet Nam Research Institute of Forests and Rangelands Agricultural ResearchEducation and Extension Organization(AREEO)TehranIran Institute of Geological Sciences Vietnam Academy of Sciences and Technology84 Chua Lang StreetDong daHa NoiViet Nam Department of Geography School of Social EducationVinh UniversityViet Nam Department of Resource and Environment Management School of Agriculture and ResourcesVinh UniversityViet Nam Faculty of Geography VNU University of Science334 Nguyen TraiHa NoiViet Nam Institute of Research and Development Duy Tan UniversityDa Nang 550000Viet Nam Department for Management of Science and Technology Development Ton Duc Thang UniversityHo Chi Minh CityViet Nam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityViet Nam

Improving the accuracy of flood prediction and mapping is crucial for reducing damage resulting from flood *** this study,we proposed and validated three ensemble models based on the Best First Decision Tree(BFT)and the Bagging(Bagging-BFT),Decorate(Bagging-BFT),and Random Subspace(RSS-BFT)ensemble learning techniques for an improved prediction of flood susceptibility in a spatially-explicit manner.A total number of 126 historical flood events from the Nghe An Province(Vietnam)were connected to a set of 10 flood influencing factors(slope,elevation,aspect,curvature,river density,distance from rivers,flow direction,geology,soil,and land use)for generating the training and validation *** models were validated via several performance metrics that demonstrated the capability of all three ensemble models in elucidating the underlying pattern of flood occurrences within the research area and predicting the probability of future flood *** on the Area Under the receiver operating characteristic Curve(AUC),the ensemble Decorate-BFT model that achieved an AUC value of 0.989 was identified as the superior model over the RSS-BFT(AUC=0.982)and Bagging-BFT(AUC=0.967)models.A comparison between the performance of the models and the models previously reported in the literature confirmed that our ensemble models provided a reliable estimate of flood susceptibilities and their resulting susceptibility maps are trustful for flood early warning systems as well as development of mitigation plans.

关键词： Machine learning Ensemble learners Hybrid modeling

Citron kinase interacts with LATS2 and inhibits its activity by occluding its hydrophobic phosphorylation motif

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Journal of Molecular Cell Biology 2019年第11期11卷 1006-1017页

作者： thi hai yen tran Dae-Wook Yang Minchul Kim Da-Hye Lee Marta Gai Ferdinando Di Cunto Kwang-Wook Choi Dae-Sik Lim Department of Biological Sciences KAIST 291 Daehak-roYuseong-guDaejeon 34141Republic of Korea Department of Molecular Biotechnology and Health Sciences University of Turin10126 TurinItaly

The inhibitory effect of large tumor suppressor kinase(LATS1/2)on the activity of the oncoprotein yes-associated protein(YAP)is crucial to maintain tissue *** studies have identified several new regulators of this ***,citron kinase(CIT)was listed as a potential binding candidate of Hippo-related components,suggesting a new connection between CIT and the Hippo *** from CITs role in cytokinesis,the molecular crosstalk between CIT and the Hippo pathway is largely ***,we demonstrate a role for CIT as a scaffold protein Unking LATS2 and *** importantly,CIT interacts with LATS2 to directly suppress LATS2 phosphorylation at the hydrophobic motif—targeted by MST1,leading to LATS2 inactivation and YAP *** studying their genetic interactions,we found that Sticky,the CIT homolog in Drosophila melanogaster,functions with Warts to control Drosophila eye ***,our study confirms citron kinase as a novel regulator of the Hippo pathway.

关键词： citron kinase LATS2-YAP interaction LATS2 inhibition sticky-warts Hippo pathway

Effects of parental age on offspring growth and survival in both wild and domesticated strains of bighead catfish(Clarias macrocephalus Günther,1864)

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Aquaculture and Fisheries 2023年第2期8卷 141-147页

作者： Thuy yen Duong Thet Su Win thi Ngoc tran Nguyen College of Aquaculture and Fisheries Can Tho UniversityCan Tho920000Viet Nam International Master Program in Aquaculture Course 4Can Tho UniversityCan Tho920000Viet Nam

Understanding the relationship between fish parental age and offspring performance over their life cycle is crucial for *** study investigates the effect of parental age for both 1-and 2-year-old fish on the growth and survival rates of their larval to grow-out stages for two wild and domesticated strains of bighead catfish(Clarias macrocephalus).Fish were sampled from the Vietnamese Mekong Delta where wild adult fish were collected from a conservation area in Ca Mau Province and domesticated fish were taken from a hatchery in Can *** offspring treatments of 1-and 2-year-old broodstock strains were reared for 3 successive periods:40 days for fingerling rearing in static tanks with water exchange,60 days for juveniles,and 90 days for grow-out in recirculating *** final weight of fish at 190 days varied from 96.7 to 144.7 *** growth of offspring was not affected by parental age(P>0.05),over the 3 rearing ***,the domesticated fish strain showed significantly better growth rates than the wild fish strain(P<0.05).Feed conversion ratios were comparable across fish *** rates did not differ at the fingerling(21.8%-36.4%)and juvenile(69.0%-73.3%)***,significant differences were found at the grow-out stage(69.3%-84.0%),with offspring from 2-year-old parents of both strains having greater survival ***,1-and 2-year-old fish appear to be suitable for bighead catfish breeders.

关键词： Parental age Clarias catfish Fish growth Strain evaluation Wild broodstock

China and Vietnam: the Asymmetry of Economy in Recent 20 Years

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China and Vietnam: the Asymmetry of Economy in Recent 20 Yea...

作者： LE thi hai yen 华东师范大学

学位级别：硕士

自1991年中越关系正常化以来,两国的经贸关系也迅速恢复发展。1999年,两国领导人签署联合声明,一致同意把“长期稳定、面向未来、睦邻友好、全面合作”的16字方针确定为21世纪发展两国关系的指导思想。两国在政治、经济、文化等各个领... 详细信息

自1991年中越关系正常化以来,两国的经贸关系也迅速恢复发展。1999年,两国领导人签署联合声明,一致同意把“长期稳定、面向未来、睦邻友好、全面合作”的16字方针确定为21世纪发展两国关系的指导思想。两国在政治、经济、文化等各个领域都得到了全面发展,两国的经济关系也在近20年有了飞跃式的提升。然而,这种关系是由非对称框架驱动的,无论是政治的不对称性还是经济的不对称性。根据国际理论,通常情况下,一个比较强大的国家会在一个不对称的关系中控制一个较弱的国家。但是,中国和越南之间的关系并不是简单的,因为他们拥有了超过一千年的复杂历史并且拥有儒家思想的强烈影响.由于文章长度的限制,本文仅着眼于讨论经济上的成就与不足,尤其是通过表现、原因和统计数据,着重分析越南对中国在经济上的依赖并在“一带一路”的影响下,就此提出了一些解决方案来改善这种情况。

关键词：中国-越南经济不对称经济关系经济依存度贸易逆差进出口 EPC 投资

Invariant Lighting Hand Posture Classification

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Invariant Lighting Hand Posture Classification

Upconversion luminescence of Gd2O3:Er3+and Gd2O3:Er3+/silica nanophosphors fabricated by EDTA combustion method

The 2010 IEEE International Conference on Progress in Informatics and Computing

作者： thi-Thanh-hai tran thi-Thanh-Mai Nguyen MICA International Research Center Hanoi University of Science and Technology VietNam

ISBN: (纸本)9781424467860

＜正＞Hand posture classification is a key problem for many human computer interaction ***,this is not a simple *** this paper,we propose to decompose the hand posture classification problem into 2 *** the first step,we detect skin regions using a very fast algorithm of color segmentation based on thresholding *** segmentation is robust to lighting condition thank to a step of color normalization using neural *** the second step, each skin region will be classified into one of hand posture class using Cascaded Adaboost *** contributions of this paper are:（i） By applying a step of color normalization,the posture classification rate is significantly improved under varying lighting condition;（ii） The cascaded Adaboost technique has been studied for the problem of face detection（2 classes）.In this paper, it will be studied and evaluated in more detail in a problem of classification of hand postures（multi-classes）.

关键词： Hand posture classification Cascaced Adaboost Color normalization Neural network Lighting invariance

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Journal of Rare Earths 2019年第11期37卷 1126-1131页

作者： Le Quoc Minh tran Kim Anh Nguyen Duy Hung Pham thi Minh Chau Nguyen thi Quy hai Ho Van Tuyen Vu thi Thai Ha Vu Duc Tu Wieslaw Strek Institute of Theoretical and Applied Research Duy Tan UniversityDa Nang 55000Viet Nam Advanced Institute for Science and Technology Hanoi University of Science and Technology1 Dai Co VietHai Ba TrungHanoiViet Nam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau Giay DistrictHanoiViet Nam Institute of Low Temperature and Structure Research Polish Academy of Science 2 OkolnaWroclawPoland

Gd2O3:Er^3+nanophosphors were fabricated by the combustion method in presence of Na2 ethylene diamine tetra acetic acid(EDTA-Na2)as fuel at not high temperature(≤350℃)within a very short time of 5 *** added concentration of Er^3+ions in Gd2O3 matrix was changed from 0.5 mol%to 5.0 mol%.The X-ray diffraction pattern of samples indicates the monoclinic structure of Gd2O3:Er^3+.The morphology and chemical composition analysis of the Gd2O3:Er^3+samples are characterized by a field emission scanning electron microscope(FESEM)and a Fourier-transform infrared spectrometer(FTIR).The photoluminescence(PL),photo luminescence excitation(PLE)and upconversion(UC)at room temperature of the prepared materials with different concentrations of Er^3+were *** PL of Gd2O3:Er^3+nanomaterials are shown in visible at 545,594,623,648,688 nm under excitation at 275 *** emission bands from transitions of Er^3+from 2P3/2 to 4F9/2 are observed,UC luminescent spectra of the Gd2O3:Er^3+/silica nanocomposites under 976 nm excitation show the bands at 548 and 670 *** influence of excitation power at 980 nm for transitions were measured and *** results indicate that the upconversion process of Gd2O3:Er^3+/silica is two photons absorption *** low temperature dependence of UC luminescent intensities of the main bands of Gd2O3:Er^3+was investigated towards development of a nanotemperature sensor in the range of 10-300 K.

关键词： Upconversion luminescence Gd2O3:Er3+ Gd2O3:Er3+/silica Nanophosphors EDTA combustion Rare earths