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A Deep Learning Model of Traffic Signs in Panoramic Images Detection

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Intelligent Automation & Soft Computing 2023年第7期37卷 401-418页

作者： Kha Tu Huynh thi Phuong Linh Le Muhammad Arif thien Khai tran International University Ho Chi Minh CityVietnam-Vietnam National UniversityHo Chi Minh City700000Vietnam Department of Computer Science The Superior UniversityLahorePakistan Ho chi Minh City University of Foreign Languages and Information Technology Ho Chi Minh City700000Vietnam

To pursue the ideal of a safe high-tech society in a time when traffic accidents are frequent,the traffic signs detection system has become one of the necessary topics in recent years and in the *** ultimate goal of this research is to identify and classify the types of traffic signs in a panoramic *** accomplish this goal,the paper proposes a new model for traffic sign detection based on the Convolutional Neural Network for com-prehensive traffic sign classification and Mask Region-based Convolutional Neural Networks(R-CNN)implementation for identifying and extracting signs in panoramic *** augmentation and normalization of the images are also applied to assist in classifying better even if old traffic signs are degraded,and considerably minimize the rates of discovering the extra *** proposed model is tested on both the testing dataset and the actual images and gets 94.5%of the correct signs recognition rate,the classification rate of those signs discovered was 99.41%and the rate of false signs was only around 0.11.

关键词： Deep learning convolutional neural network Mask R-CNN traffic signs detection

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

Surveillance of dengue and chikungunya infection in Dong Thap,Vietnam:A 13-month study

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Asian Pacific Journal of Tropical Medicine 2016年第1期9卷 36-40页

作者： Pham thi kim Lien Laurence Briant Truong Ba Tang Bui Minh trang Laurent Gavotte Emmanuel Comillot Vu Trong Duoc tran Nhu Duong Roger Frutos Phan thi Nga National Institute of Hygiene and Epidemiology University of Montpellier Department of Biology Dong Thap General Hospital Cirad TA-A17/GCampus International de Raillarguet

Objective:To establish a surveillance in Dong Thap,at the border with Cambodia by assessing the presence of DHNV serotypes and chiKV among patients hospitalized at Dong Thap general ***:Cross-sectional descriptive analysis was conducted on a cohort of 131 patients hospitalized with acute fever and symptoms compatible with dengue or *** study was conducted from January 2012 to February *** full clinical picture was established as well as serological and molecular *** analysis was sequentially performed on blood samples collected on admission and an average of seven days after *** detection of IgM antibody to DENV was performed by IgM capture ELTSA and the detection of DENV and chiKV RNA was done by reverse-transcription multiplex ***:101 patients out of 131(77%) were confirmed with *** four dengue serotypes were detected with a predominance of DENV2 and *** chikungunya infection was detected although reported in neighboring Cambodia.A differential efficiency of serological dengue detection was *** was 29%upon admission and 53%after seven days on the same patients.30 patients out of 131(23%) were negative with both DENV and ***:Dengue is at risk of being underestimated and chikungunya is not systematically *** in detection and surveillance procedures are therefore discussed to increase efficiency of dengue detection and continue the monitoring the emergence of chiKV in Dong Thap province and in Vietnam.

关键词： Dengue chikungunya Arbovirus Dong ThapVietnam

Thermodynamic Simulation on the Change in Phase for Carburizing Process

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Computers, Materials & Continua 2021年第7期68卷 1129-1145页

作者： Anh Tuan Hoang Xuan Phuong Nguyen Osamah Ibrahim Khalaf thi Xuan tran Minh Quang Chau thi Minh Hao Dong Duong Nam Nguyen Ho chi Minh city University of Technology(HUTECH) HoVietnam Ho chi Minh city University of transport Ho Chi Minh cityVietnam Al-Nahrain University Al-Nahrain Nanorenewable Energy Research CenterBaghdadIraq Hanoi University of Science and Technology HanoiVietnam Industrial University of Ho chi Minh City(IUH) Ho Chi Minh cityVietnam Vietnam Maritime University HaiphongVietnam

The type of technology used to strengthen the surface structure of machine parts,typically by carbon-permeation,has made a great contribution to the mechanical engineering industry because of its outstanding advantages in corrosion resistance and enhanced mechanical and physical ***,carbon permeation is considered as an optimal method of heat treatment through the diffusion of carbon atoms into the surface of alloy *** study presented research results on the thermodynamic calculation and simulation of the carbon permeability *** Fick’s law,the paper calculated the distribution of carbon concentration in the alloy steel after it is absorbed from the surface into the internal of the *** the SYSWELD software,an analysis was performed on the carbon permeability process to determine the distribution of carbon concentrations in 20CrMo steel that was then followed by a detailed analysis of the microstructure of the sample post the carburizing *** to the calculation results,the surface carbon content was 0.9%and steadily decreased into the *** 3 hours,the depth of the absorbent layer was measured at 0.5 mm for both the cylindrical and cubic *** analyzing the phase,the distribution of martensite phases such as ferrite/pearlite and residual austenite was also determined after the carburizing process.

关键词： Carburizing process 20CrMo steel thermodynamic analysis microstructure formation carbon concentration

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越中边贸人民币结算问题研究

越中边贸人民币结算问题研究

作者： tran，thi CAM chi 华中师范大学

学位级别：硕士

近年来,越南与其边界国家之间的边境贸易发展,促进边境社会与经济的发展。从2004年至今,中国一直保持着越南主要贸易伙伴的地位,越中贸易活跃。随着越中贸易额度的大幅度增长,两国边境贸易往来越来越频繁,合作形式也日益多样化。越南与... 详细信息

近年来,越南与其边界国家之间的边境贸易发展,促进边境社会与经济的发展。从2004年至今,中国一直保持着越南主要贸易伙伴的地位,越中贸易活跃。随着越中贸易额度的大幅度增长,两国边境贸易往来越来越频繁,合作形式也日益多样化。越南与中国之间的边境贸易额占越南边境贸易额约85%,中越贸易成为越南边贸的一个重要部分。两国边境贸易之所以快速发展,其原因是多样的,除了特殊的地缘优势、传统友谊、两国经济互补性的特点外,两国政府对边境贸易提供了很多优惠政策也起到了至关重要的作用。多年来,两国为避免汇率风险对边贸人民币结算的影响,为越中边境贸易发展设置了一个稳定结算方式。因此,本文选择“越中边贸人民币结算问题研究”作为研究主题。本文使用三种研究方法:文献分析、规范分析和实证分析法。本文的基本内容安排如下:第一,分析越中边贸人民币结算存在的问题:越南边贸结算的法律文件不一致,边贸监管机构不全面,越中边境银行结算体系不完善;第二,研究影响越中边贸人民币结算的主要因素:越中睦邻友好关系助于边贸结算稳定发展,中越鼓励和推进边贸人民币结算的政策,越中金融组织合作提供边贸结算的便利等重要因素;第三,通过主成分分析及多元线性回归模型研究各影响因素对越中边贸人民币结算的影响。发现越中边贸人民币结算与越中边贸总额、境外机构建设、汇率等各影响因素有重大联系,其中越中边易总额对越中边贸人民币结算有促进作用,汇率对越中边贸人民币结算额有消极影响。人员素质、越中鼓励与促进边贸的政策、境外机构建设对越中边贸人民币结算具有积极影响。最后,本文提出进一步推进边贸人民币结算的相应政策建议:保持政策稳定,互建沟通与合作;完善外汇监管,灵活运用监管手段;完善越中边贸银行结算合作体制;合理运用贸易结算工具,规避汇率风险和利率风险;建立边境贸易特区,提高边贸结算水平。

关键词：越中边境贸易人民币结算影响因素对策建议

Novel CagA ELISA exhibits enhanced sensitivity of Helicobacter pylori CagA antibody

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World Journal of Gastroenterology 2017年第1期23卷 48-59页

作者： Yuichi Matsuo Yasutoshi Kido Junko Akada Seiji Shiota tran Thanh Binh tran thi Huyen trang Ho DQ Dung Pham Huu Tung tran Dinh Tri Ngo P Minh Thuan Le Quang Tam Bui chi Nam Vu Van Khien Yoshio Yamaoka Department of Environmental and Preventive Medicine Oita University Faculty of Medicine Department of General Medicine Oita University Faculty of Medicine Department of Endoscopy Cho Ray Hospital Department of Molecular Biology 108 Military Central Hospital Department of Endoscopy Daklak Hospital Department of Endoscopy Lao Cai Hospital Department of Hepatogastroentrology 108 Military Center Hospital Department of Medicine-Gastroenterology Baylor College of Medicine and Michael E.De Bakey Veterans Affairs Medical Center

AIMTo develop a novel Helicobacter pylori (H. pylori) CagA antibody enzyme-linked immunosorbent assay (ELISA) suitable for detecting serum anti-CagA antibodies with high *** East Asian-type CagA protein was purified and immobilized for ELISA. Serum samples from 217 Vietnamese individuals (110 H. pylori-infected and 107 uninfected individuals) were applied. Conventional ELISA from Western-type CagA and our East Asian-type CagA ELISA were evaluated by comparing 38 subjects with the Western-type genotype and 72 subjects with the East Asian-type cagA genotype. Histological scores of the gastric mucosa were determined using the updated Sydney System to examine the relationship with anti-CagA antibody *** 70-100 kDa fragments were immobilized on the ELISA plate. In ROC analysis, the area under the curve of our East Asian-type CagA ELISA was comparable to that of conventional CagA ELISA. The sensitivity of the two ELISAs differed depending on the cagA genotype. The sensitivity of East Asian-type CagA ELISA was higher for subjects infected with East Asian-type cagA H. pylori (P < 0.001), and the sensitivity of the conventional CagA ELISA tended to be higher for subjects infected with Western cagA H. pylori (P = 0.056). The titer of anti-CagA antibody tended to correlate with monocyte infiltration scores (r = 0.25, P = 0.058) and was inversely correlated with H. pylori density (r = -0.26, P = 0.043).CONCLUSIONThe novel ELISA is useful to detect anti-CagA antibodies in East Asian countries, and the titer may be a marker for predicting chronic gastritis.

关键词： Helicobacter pylori cagA genotype Anti-CagA antibody Enzyme-linked immunosorbent assay Inflammation Gastritis

Apply neural network for improving production planning at Samarang petrol mine

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International Journal of Intelligent Computing and Cybernetics 2016年第2期9卷 126-143页

作者： Quoc Trung Pham thi kim Dung Phan School of Industrial Management HCMC University of TechnologyHo Chi Minh CityVietnam Schlumberger Information Solution Schlumberger Malaysia ServicesKuala LumpurMalaysia

Purpose-Artificial neural network(ANN)is considered a good solution for building non-linear relationship between input and output parameters,which is suitable for solving production back allocation,which is the most important step for production planning of petroleum *** purpose of this paper is to suggest a solution for solving production back allocation problem at Samarang petrol mine based on ANN ***/methodology/approach-In this study,well operational parameters’surveillance was conducted and ANN was used to build relationships between operation parameters and production *** method is used for testing and evaluating the possibility of using ANN for supporting production planning at Samarang ***-Consequently,the proposed ANN solution can increase the accuracy of predicted values and could be used for supporting production planning at Samarang *** ANN uses well test data for training and predicting(without adding new devices),it could be a feasible and cheap *** limitations/implications-There is a need for applying other methods,such as:support machine vector,non-linear autoregressive models,*** better evaluation of ANN *** implications-The ANN models helped operation engineers to understand well production performance and make decision to improve production plan in timely *** solution could be generalized for the whole mine or to similar petroleum mines in ***/value-this paper aims to propose a solution based on ANN for solving production back allocation problem of petroleum *** solution is tested at Samarang mine.

关键词： Malaysia Artificial neural network Petroleum industry Production back allocation Production plan Samarang mine

Optimization, equilibrium, adsorption behavior and role of surface functional groups on graphene oxide-based nanocomposite towards diclofenac drug

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Journal of Environmental Sciences 2020年第7期32卷 137-150页

作者： Thuan Van tran Duyen thi Cam Nguyen Hanh TNLe Dai-Viet NVo Sonil Nanda Trinh Duy Nguyen Nguyen Tat Thanh Hi-Tech Institute Nguyen Tat Thanh UniversityHo Chi Minh City 755414Viet Nam Center of Excellence for Green Energy and Environmental Nanomaterials(CE@GrEEN) Nguyen Tat Thanh UniversityHo Chi Minh City 755414Viet Nam Institute of Hygiene and Public Health Ho Chi Minh City 700000Viet Nam Department of Chemical and Biochemical Engineering University of Western OntarioLondonOntarioCanada

Aquatic contamination of diclofenac(DCF),an emergent non-steroidal anti-inflammatory drug(NSAIDs),can result in adverse effects to many ecosystems through ***,introducing effective remediation techniques to sequester the pharmaceutical wastes is highly fundamental to prevent their accumulation in the ***,adsorption has been presented as a green and efficient ***,we report the characterization and application of the novel magnetic nanocomposite(GO@CoFe2O4)derived from cobalt-based ferrite(CoFe2O4)and graphene oxide(GO)for DCF *** the optimization procedure,the response surface methodology(RSM)was adopted to investigate the impacts of DCF concentration(1.6-18.4 mg/L),DCF dosage(0.08-0.92 g/L),and solution pH(2.6-9.4)to find the optimum conditions for DCF removal,at 10.5 mg/L,0.74 g/L,and pH 4,*** the adsorption experiments,the kinetic,isotherm,thermodynamic,and intraparticle diffusion models were systematically ***,we have elucidated the role of functional groups on the surface of GO@CoFe2O4 in enhancing the adsorption of DCF *** good removal efficiency(up to 86.1%),high maximum adsorption capacity(32.4 mg/g),GO@CoFe2O4 can be a potential candidate to eliminate DCF drug from water.

关键词： Diclofenac sodium Graphene oxide Magnetic nanocomposite Response surface methodology Pharmaceuticals adsorption

Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests

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Journal of Forestry Research 2020年第5期31卷 1713-1722页

作者： tran Van Do Mamoru Yamamoto Osamu Kozan Vo Dai Hai Phung Dinh Trung Nguyen Toan Thang Lai Thanh Hai Vu Thanh Nam Trieu Thai Hung Hoang Van Thang tran Duc Manh Cao chi Khiem Vu Tien Lam Nguyen Quang Hung tran Hoang Quy Pham Quang Tuyen Trinh Ngoc Bon Nguyen thi Thu Phuong Ninh Viet Khuong Nguyen Van Tuan Dang thi Hai Ha tran Hai Long Dang Van Thuyet Dang thinh Trieu Nguyen Van thinh tran Anh Hai Duong Quang Trung Nguyen Van Bich Dinh Hai Dang Pham Tien Dung Nguyen Huy Hoang Le thi Hanh Phan Minh Quang Nguyen thi Thuy Huong Hoang Thanh Son Nguyen Thanh Son Nguyen thi Van Anh Nguyen thi Hoai Anh Pham Dinh Sam Hoang thi Nhung Hoang Van Thanh Nguyen Huu thinh tran Hong Van Ho Trung Luong Bui Kieu Hung Research Institute for Sustainable Humanosphere Kyoto UniversityUjiKyotoJapan Silviculture Research Institute Vietnamese Academy of Forest SciencesNorth Tu LiemHanoiVietnam Center for Southeast Asian Studies Kyoto UniversityKyotoJapan Vietnamese Academy of Forest Sciences North Tu LiemHanoiVietnam Vietnam Administration of Forestry No.2 Ngoc HaBa DinhHanoiVietnam

Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest *** study analyses the variation of AGB and stand structure of evergreen broadleaved forests among six ecoregions of Vietnam.A data set of 1731-ha plots from 52 locations in undisturbed old-growth forests was *** results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of *** area and AGB are positively correlated with trees>30 cm *** areas surveyed(52.6%)in these old-growth forests had AGB of 100–200 Mg ha^-1;5.2%had AGB of 400–500 Mg ha^-1,and 0.6%had AGB of>800 Mg ha^-*** percent of the areas surveyed had stand densities of 300–600 ***^-1,and 64%had basal areas of 20–40 m^2 ha^-*** is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in *** causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density.

关键词： Aboveground biomass Carbon storage Climatic variables Ecoregion Edaphic variables Oldgrowth forest