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Knowledge and attitude toward COVID-19 among healthcare workers at District 2 Hospital, Ho Chi Minh City

Asian Pacific Journal of Tropical Medicine 2020年第6期13卷 260-265页

作者： Huynh Giao Nguyen Thi Ngoc Han tran van khanh Vo Kim Ngan Vo van Tam Pham Le An Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Infectious Diseases University Medical Center Ho Chi Minh CityVietnam Department of Scientific Research District 2 HospitalHo Chi Minh CityVietnam Department of Nursing District 2 HospitalHo Chi Minh CityVietnam Faculty of Nursing and Medical Technology University of Medicine Pham Ngoc Thach at Ho Chi Minh CityVietnam Center for the Training of Family Medicine Faculty of MedicineUniversity of Medicine and Pharmacy at Ho Chi Minh CityVietnam

Objective:To assess the knowledge and attitude toward coronavirus disease-2019(COVID-19)among healthcare workers at District 2 Hospital in Ho Chi Minh City(HCMC).Methods:A cross-sectional study was performed between January 2020 and February 2020 at District 2 Hospital.A systematic random sampling strategy was carried out and the data was collected through a self-administered questionnaire of the knowledge and attitude of healthcare workers regarding *** analysis was reported to describe the demographic,mean knowledge and attitude score of healthcare *** statistics including t-test,ANOVA and Spearman’s correlation were used to evaluate the relationship between study ***:A total of 327 eligible healthcare workers had a mean score of knowledge and attitude of 8.17±1.3(range 4-10)and 1.86±0.43(range 1-5),*** showed good knowledge and a positive ***,approximately two thirds of the participants knew the mode of transmission,the isolation period and treatment(67.0%,65.8%,and 58.4%,respectively),and 82.3%and 79.8%,respectively,held positive attitude regarding the risk of personal and family members getting *** was a negative correlation between knowledge scores and attitude scores(r=-0.21,P<0.001).Additionally,healthcare workerspredominately used social media to inform themselves about COVID-19(91.1%).Conclusions:The majority of healthcare workers had good knowledge and positive attitude toward ***,the level of some knowledge and attitude lower than that expected for their position level towards the *** education interventions and campaigns are required for healthcare workers.

关键词： Knowledge Attitude COVID-19 Healthcare worker District 2 Hospital

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Health behavior outcomes in stroke survivors prescribed wearables for atrial fibrillation detection stratified by age

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Journal of Geriatric Cardiology 2024年第3期21卷 323-330页

作者： Joanne Mathew Jordy Mehawej Ziyue Wang Taylor Orwig Eric Ding Andreas Filippaios Syed Naeem Edith Mensah Otabil Alex Hamel Kamran Noorishirazi IrinaRadu Jane Saczynski David D.McManus khanh-van tran Division of Cardiovascular Medicine Department of MedicineUniversity of Massachusetts Chan Medical SchoolLake Avenue NorthWorcesterUSA Department of Internal Medicine Central Michigan UniversityMount PleasantUSA Department of Pharmacy and Health Systems Sciences School of PharmacyNortheastern UniversityBostonUSA Department of Population and Quantitative Health Sciences University of Massachusetts Chan Medical SchoolLake Avenue NorthWorcesterUSA

BACKGROUND Smartwatches have become readily accessible tools for detecting atrial fibrillation(AF).There remains limited data on how they affect psychosocial outcomes and engagement in older *** examine the health behavior outcomes of stroke survivors prescribed smartwatches for AF detection stratified by *** We analyzed data from the Pulsewatch study,a randomized controlled trial that enrolled patients(≥50 years)with a history of stroke or transient ischemic attack and CHA2DS2-VASc≥*** participants were equipped with a cardiac patch monitor and a smartwatch-app dyad,while control participants wore the cardiac patch monitor for up to 44 *** evaluated health behavior parameters using standardized tools,including the Consumer Health Activation Index,the Generalized Anxiety Disorder questionnaire,the 12-Item Short Form Health Survey,and wear time of participants categorized into three age groups:Group 1(ages 50-60),Group 2(ages 61-69),and Group 3(ages 70-87).We performed statistical analysis using a mixedeffects repeated measures linear regression model to examine differences amongst age *** Comparative analysis between Groups 1,2 and 3 revealed no significant differences in anxiety,patient activation,perception of physical health and wear *** use of smartwatch technology was associated with a decrease in perception of mental health for Group 2 compared to Group 1(β=-3.29,P=0.046).CONCLUSION Stroke survivors demonstrated a willingness to use smartwatches for AF ***,among these study participants,the majority did not experience negative health behavior outcomes or decreased engagement as age increased.

关键词： prescribed stratified wear

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Safe Vegetable Consumption in Hue City:A Case Study of Food Safety Situation in Vietnam

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Journal of Agricultural Science and Technology(A) 2017年第B10期7卷 119-130页

作者： Nguyen Vinh Truong tran Thi Bach Thao tran Thi Anh Tuyet Nguyen van khanh tran Quang khanh van University of Agriculture and Forestry Hue UniversityHue 530000Vietnam Institute of Biotechnology Hue UniversityPhu ThuongPhu VangThua Thien Hue 530000Vietnam

Food safety has become a growing concern for citizens in the modern society when consuming unsafe food that directly impacts public health,life quality and well-being of each *** of Vietnam in general and specially in Hue city have been facing challenge of vegetable unsafety.A survey concerning the consumption of safe vegetables was conducted in Hue city,*** were collected by using a well-structured questionnaire from representative of 30 consumers,30 producers and 10 *** results showed that lettuce,sweet potato and Chinese mustard were identified as the most important vegetables to consumers in Hue *** of the consumers purchased vegetable every *** cost of vegetable in every transaction was about 30,000 *** expenditure has not created a great motivation for developing safe vegetable *** of the consumers in Hue city showed high interest,demand,trust and satisfaction for safe ***,50%of the consumers reported that the price of the safe vegetable was quite expensive and price was not matched with their ***,there were some disadvantages in each stage of vegetable supply *** example,land,seed,capital,cultivation techniques,preliminary processing,preservation,brand name,trademark and place to consume have not met the requirement of high technology production for the supply chain of safe *** chain linking between the production and consumption of vegetables is not *** and consumers do not have closely *** can not be traced to origin and there is no safe *** consumers believe the quality of vegetables depending on the prestige suppliers,such as,the vegetable shops with foreign *** vegetables of farmers are very difficult to be certified for safe *** and suggestions to Hue city are proposed that it is necessary to establish the vegetable production area in Hue *** growers should be supported w

关键词： Food safety vegetable consumption vegetable supplying chain Hue city

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Study on Development of Formulated Feed for Improving Growth and Pigmentation of Koi Carp （Cyprinus carpio L,, 1758） Juveniles

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Journal of Life Sciences 2014年第5期8卷 433-441页

作者： Nguyen van Nguyen tran van khanh Pham Duy Hai Research Institute for Aquaculture No. 2 Ho Chi Minh City Vietnam

The aim of the present study was to develop a formulated feed for improving skin pigmentation and growth performance of koi carp juveniles. Two experiments were conducted for determination of an optimal dietary astaxanthin and FM (fish meal) ration for koi carp juveniles. In the first experiment, three isonitrogenous and isoenergetic dietary treatments were designed with three different levels of astaxanthin consisted of 60, 80 and 100 mg/kg and a commercial feed served as a control. For the second experiment, four isonitrogenous and isoenergetic dietary treatments were formulated with graded inclusions of dietary FM replaced from 0% to 60% at 20% increments by SM (soybean meal), PBM (poultry by-product meal), and a CD (control diet). Obtained results demonstrated that skin pigmentation of koi carp juveniles fed the diet containing 80 mg/kg astaxanthin, 36.02% protein, 7.78% lipid, 4.20 Kcal·g -1 GE (gross energy) were more better than those at the diet with lower estaxanthin content and commercial diet. Moreover, the highest growth and feed utilization of fish were observed at this diet with WG (weight gain), SGR (specific growth rate) and FCR (feed conversion ratio) were 121.80%, 0.95 (%/day) and 1.6, respectively.

关键词：色素沉着配合饲料锦鲤饮食治疗饲料转化率特定生长率少年实验测定

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The Effects of Nutritional Media and Initial Cell Density on the Growth and Development of Spirulina platensis

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Journal of Agricultural Science and Technology(A) 2017年第B10期7卷 60-67页

作者： Nguyen van khanh Nguyen Thi Diem Le Thi Tuyet Nhan Phan van Cu tran Quang khanh van Ngo Thi Hoan Institute of Biotechnology Hue UniversityPhu ThuongPhu VangThua Thien Hue 530000Vietnam Faculty of Fisheries University of Agriculture and ForestryHue University102 Phung Hung StreetHue 530000Vietnam Faculty of Fisheries Ha Long University258 Bach Dang StreetUong Bi City 207900Quang NinhVietnam

The main objective of the study was to determine the effects of nutritional media and initial cell density on the growth and development of Spirulina *** study was carried out at the Center for Incubation and Technology transfer,Hue University from May 2015 to August *** the first experiment,*** was cultured in four different nutritional media,including Zarrouk,Spi-RIA3,Nisole and Thuoc medium(Vietnamese).Resulted showed that *** grew significantly in the Zarrouk medium rather than in other nutritional medium at the same time,and gained the maximum density of 2,736.5 mg/L after 13 d inoculums,with specific growth rate of 4.987%per day and the time to doubling population of 0.139 *** the second experiment,*** was cultured in six different initial cell densities:100,400,700,1,000,1,300 and 1,600 mg/L,and the optimum nutritional medium was Zarrouk medium selected from experiment *** showed at the initial culture density of 400 mg/L,the highest biomass was gained with the maximum density of 3,071.2 mg/L after 21 d inoculums,with specific growth rate of 9.15%per day and time to double population of 0.076 *** biomass from culture in Zarrouk medium at initial cell density 400 mg/L obtained total protein of 51.98%,total lipid of 1.75%,total carbohydrate of 0.75%,carotene of 0.36%and total minerals of 5.2%,on a basis of dry matter.

关键词： Spirulina platensis nutrient medium initial density growth rates

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A comparative analysis of weight-based machine learning methods for landslide susceptibility mapping in Ha Giang area

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Big Earth Data 2023年第4期7卷 1005-1034页

作者： Thanh Trinh Binh Thanh Luu trang Ha Thi Le Duong Huy Nguyen Trong van tran Thi Hai van Nguyen khanh Quoc Nguyen Lien Thi Nguyen Faculty of Computer Science Phenikaa UniversityYen NghiaHa DongHanoi 12116Vietnam Phenikaa Research and Technology Institute(PRATI) A&A Green Phoenix Group JSCNo.167 Hoang NganTrung HoaCau GiayHanoi 11313Vietnam Northwestern Geological Division General Department of Geology and Minerals of VietnamHanoiVietnam Youth union office Thuyloi University175 Tay SonDong DaHanoiVietnam Center of Remote Sensing and Geohazards Vietnam Institute of Geosciences and Mineral ResourcesHanoiVietnam

Landslide susceptibility maps (LSMs) are very crucial for planningpolicies in hazardous areas. However, the accuracy and reliability ofLSMs depend on available data and the selection of suitable *** study is conducted to produce LSMs by combinations of machinelearning methods and weighting techniques for Ha Giang province,Vietnam, where has limited data. In study area, we gather 11 landslideconditioning factors and establish a landslide inventory *** the weights of classes (or factors) is very important toprepare data for machine learning methods to generate LSMs. Wefrst use frequency ratio (FR) and analytic hierarchy process (AHP)techniques to generate the weights. Then, random forest (RF), supportvector machine (SVM), logistic regression (LR), and AHP methods arecombined with FR and AHP weights to yield accurate and reliableLSMs. Finally, the performance of these methods is evaluated by fivestatistical metrics, ROC and R-index. The empirical results have shownthat RF is the best method in terms of R-index and the five metrics, *** rate (0.9661), FP rate (0.0), ACC (0.9835), MAE (0.0046), and RMSE(0.0350) for this study area. This study opens the perspective of weightbasedmachine learning methods for landslide susceptibility mapping.

关键词： Landslide logistic regression random forest SvM Vietnam

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Calculation of the ex-core neutron noise induced by individual fuel assembly vibrations in two PWR cores

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Nuclear Science and Techniques 2016年第4期27卷 67-77页

作者： Kiet A.T.Hoang van-Chung Cao van-khanh Hoang hoai-nam tran Institute of Research and Development Duy Tan University K7/25 Quang Trung Da Nang Vietnam American Polytechnic College Trung Son KDC Binh Chanh HCMC Vietnam Research and Development Center for Radiation Technology VINATOM Thu Duc HCMC Vietnam Faculty of Physics and Engineering Physics VNUHCM University of Science HCMC Vietnam Institute for Nuclear Science and Technology VINATOM 179 Hoang Quoc Viet Hanoi Vietnam

Calculation of the neutron noise induced by fuel assembly vibrations in two pressurized water reactor(PWR) cores has been conducted to investigate the effect of cycle burnup on the properties of the ex-core detector noise. An extension of the method and the computational models of a previous work have been applied to two different PWR cores to examine a hypothesis that fuel assembly vibrations cause the corresponding peak in the auto power spectral density(APSD) increase during the cycle. Stochastic vibrations along a random two-dimensional trajectory of individual fuel assemblies were assumed to occur at different locations in the cores. Two models regarding the displacement amplitude of the vibrating assembly have been considered to determine the noise source. Then, the APSD of the ex-core detector noise was evaluated at three burnup steps. The results show that there is no monotonic tendency of the change in the APSD of ex-core detector; however, the increase in APSD occurs predominantly for peripheral assemblies. When assuming simultaneous vibrations of a number of fuel assemblies uniformly distributed over the core, the effect of the peripheral assemblies dominates the ex-core neutron *** behaviour was found similar in both cores.

关键词：燃料组件随机振动中子噪声计算模型压水堆堆芯功率谱密度压水反应堆

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越南本土汉语词典学习特征分析

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鲁东大学学报（哲学社会科学版） 2024年第4期41卷 7-14页

作者：杨艳丽陈郑金容阮氏和卿阮梅贞鲁东大学国际教育学院山东烟台264039 雒鸿大学东方学院越南边和810000 胡志明市科技大学中文系越南胡志明700000 胡志明市财经大学国际语言文化学院越南胡志明700000

为了满足学习者的需求,越南本土出版了不少汉语词典,包括纸质版词典、网络词典和手机App。这些词典存在良莠不齐的问题,不能完全满足学习者的需求。对其中4部权威和典型的汉语词典进行学习特征分析后发现,越南的纸质版汉语词典虽然有用... 详细信息

为了满足学习者的需求,越南本土出版了不少汉语词典,包括纸质版词典、网络词典和手机App。这些词典存在良莠不齐的问题,不能完全满足学习者的需求。对其中4部权威和典型的汉语词典进行学习特征分析后发现,越南的纸质版汉语词典虽然有用户意识,但学习特征不明显;网络词典的学习特征比较突出,但文本内容存在诸多不准确之处。因此,开发出以《国际中文教育中文水平等级标准》为指导的面向越南汉语学习者的国别化工具书,需要中越两国学者及出版机构的共同努力。

关键词：越南本土汉语词典学习特征

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Development of a PARCS/Serpent model for neutronics analysis of the Dalat nuclear research reactor

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Nuclear Science and Techniques 2021年第2期32卷 32-44页

作者： Viet-Phu tran Kien-Cuong Nguyen Donny Hartanto Hoai-Nam tran Vinh Thanh tran van-khanh Hoang Pham Nhu Viet Ha Institute for Nuclear Science and Technology(INST) Vietnam Atomic Energy Institute(VINATOM)179 Hoang Quoc Viet str.Cau Giay DistrictHanoi 100000Vietnam Nuclear Research Institute(NRI) Vietnam Atomic Energy Institute(VINATOM)01 Nguyen Tu LucDalatLamdong 670000Vietnam Department of Mechanical and Nuclear Engineering University of SharjahPO.BOX 27272SharjahUnited Arab Emirates Institute of Fundamental and Applied Sciences Duy Tan UniversityHo Chi Minh city 700000Vietnam Faculty of Natural Science Duy Tan UniversityDanang 550000Vietnam Nuclear Safety Division Technical Support Center for Radiation and Nuclear Safety and Emergency ResponseVietnam Agency for Radiation and Nuclear Safety(VARANS)113 Tran Duy Hung str.Cau Giay DistrictHanoi 100000Vietnam

Cross-sectional homogenization for full-core calculations of small and complex reactor configurations,such as research reactors,has been recently recognized as an interesting and challenging *** paper presents the development of a PARCS/Serpent model for the neutronics analysis of a research reactor type TRIGA Mark-II loaded with Russian VVR-M2 fuel(known as the Dalat Nuclear Research Reactor or DNRR).The full-scale DNRR model and a supercell model for a shim/safety rod and its surrounding fuel bundles with the Monte Carlo code Serpent 2 were proposed to generate homogenized fewgroup cross sections for full-core diffusion calculations with *** full-scale DNRR model with Serpent 2 was also utilized as a reference to verify the PARCS/Serpent *** of the effective neutron multiplication factors,radial and axial core power distributions,and control rod worths showed a generally good agreement between PARCS and Serpent *** addition,the discrepancies between the PARCS and Serpent 2 results are also ***,the results indicate the applicability of the PARCS/Serpent model for further steady state and transient analyses of the DNRR.

关键词： PARCS Serpent 2 Group constant DNRR

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Assessment of ship manoeuvrability by using a coupling between a nonlinear transient manoeuvring model and mathematical programming techniques

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Journal of Hydrodynamics 2013年第5期25卷 788-804页

作者： tran khanh Toan OUAHSINE Abdellatif NACEUR Hakim EL WASSIFI Karima Laboratoire Roberval Université de Technologie de Compiègne Laboratoire LAMIH Université de Valenciennes Université Cadi Ayyad Faculté des Sciences et Techniques

In this paper, a numerical method based on a coupling between a mathematical model of nonlinear transient ship manoeuvring motion in the horizontal plane and Mathematical Programming （MP） techniques is proposed. The aim of the proposed procedure is an efficient estimation of optimal ship hydrodynamic parameters in a dynamic model at the early design stage. The proposed procedure has been validated through turning circle and zigzag manoeuvres based on experimental data of sea trials of the 190 000- dwt oil tanker. Comparisons between experimental and computed data show a good agreement of overall tendency in manoeuvring traiectories.

关键词： ship manoeuvrability hydrodynamics coefficients nonlinear transient dynamics sensitivity analysis mathematical pro- gramming

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