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Journal of Biomedical Science and Engineering 2010年第6期3卷 568-575页

作者： Jian Chen thanh G. phan David C. Reutens 不详

Improving the ability to assess potential stroke deficit may aid the selection of patients most likely to benefit from acute stroke therapies. Methods based only on ‘at risk’ volumes or initial neurological condition do predict eventual outcome but not perfectly. Given the close relationship between anatomy and function in the brain, we propose the use of a modified version of partial least squares (PLS) regression to examine how well stroke outcome covary with infarct location. The modified version of PLS incorporates penalized regression and can handle either binary or ordinal data. this version is known as partial least squares with penalized logistic regression (PLS-PLR) and has been adapted from its original use for high-dimensional microarray data. We have adapted this algorithm for use in imaging data and demonstrate the use of this algorithm in a set of patients with aphasia (high level language disorder) following stroke.

关键词： Ridge Penalized Logistical PLS Stroke

Ecological and behavioural risk factors of scrub typhus in central Vietnam:a case-control study

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Infectious Diseases of Poverty 2021年第4期10卷 97-97页

作者： Hanh thi Duc Tran Jan Hattendorf Hung Manh Do thanh Tien Hoang hang thi Hai Hoang Hoa Ngoc Lam Mai Kim Huynh Lan thi Hoang Vu Jakob Zinsstag Daniel Henry Paris Esther Schelling Department of Epidemiology and Public Health Swiss Tropical and Public Health InstituteBaselSwitzerland 不详

Background The risk factors for scrub typhus in Vietnam remain *** typhus caused by Orientia tsutsugamushi often presents as an undifferentiated febrile illness and remains under appreciated due to the limited availability of diagnostic *** tropical rickettsial illness is increasingly recognized as an important cause of non-malaria acute undifferentiated fever in *** study aimed to investigate behavioural and ecological related risk factors of scrub typhus to prevent this potentially life-threatening disease in *** We conducted a clinical hospital-based active surveillance study,and a retrospective residence-enrolment date-age-matched case–control study in Khanh Hoa province,Vietnam,from August 2018 to March *** examinations,polymerase chain reaction and enzyme-linked immunosorbent assay IgM tests were applied to define cases and *** enrolled participants filled out a questionnaire including demographic socio-economic status,personal behaviors/protective equipment,habitat connections,land use,and possible exposure to the *** conditional logistic regression was used to define the scrub typhus associated risk *** We identified 44 confirmed cases and matched them with 152 *** cases and controls,the largest age group was the 41–50 years old and males accounted for 61.4%and 42.8%,*** were similarities in demographic characteristics between the two groups,with the exception of *** factors were significantly associated with acquisition of scrub typhus,including sitting/laying directly on household floor[adjusted OR(aOR)=4.9,95%CI:1.6–15.1,P=0.006],household with poor sanitation/conditions(aOR=7.9,95%CI:1.9–32.9,P=0.005),workplace environment with risk(aOR=3.0,95%CI:1.2–7.6,P=0.020),always observing mice around home(aOR=3.7,95%CI:1.4–9.9,P=0.008),and use of personal protective equipment in the field(aOR=0.4,95%CI:0.1–1.1,P=0.076).Conclusions Ecological

关键词： Ecological Environmental Behaviour Risk factor Scrub typhus Orientia tsutsugamushi Vietnam

Establishing the Basic Indicator for the Calculation of the Flood Vulnerability Index for River Basins in Vietnam

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Journal of Environmental Science and Engineering(B) 2016年第8期5卷 390-394页

作者： Can Thu Van Nguyen thanh Son phan Vu Hoang Phuong Hydrology Department Faculty of Hydro-Meteorology Hochiminh City University of Natural Resources and Environment Hochiminh City 70000 Vietnam Faculty of Hydro-meteorology & Oceanography Hanoi University of Science Hanoi 100000 Vietnam Climate Change Department Faculty of Hydro-Meteorology Hochiminh City University of Natural Resources and EnvironmentHochiminh City 70000 Vietnam

Along with the concept, the method of assessing the vulnerability is becoming more and more diversified in many directions and fields. In general, these methods can be classified into two groups：（i） direct-qualitative （survey methods, integrated map ...） and （ii） indirectly-quantitative （method index）. The set of indicator plays a very important role in the successful application to any method and brings reliable results. Each basin or area with different natural geography, economics and society and so on, requires a different set of indicator. However, assessing any river basin in Vietnam needs the basic indicator. this study will establish the basic indicator for the construction of flood vulnerability index in Vietnam.

关键词： Vulnerability flood indicator.

Some Optical, Electrical Properties of Lead Free KNN-CZN Ceramics

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Journal of Materials Science and Chemical Engineering 2020年第7期8卷 1-11页

作者： phan Dinh Gio Truong thanh Bau Ngo Vu Hoai Nguyen Quoc Nam Department of Physics University of Sciences Hue University Hue Vietnam

Lead free (1−x)K0.5Na0.5NbO3-xCa(Zn1/3Nb2/3)O3 (abbreviated KNN-xCZN) ferroelectric ceramics, with x = 0, 0.02, 0.04, 0.06, 0.08, 0.10, have been fabricated by the conventional solid-state reaction method. The effects of CZN content on the structure, microstructure and some optical, electrical properties of KNN-xCZN ceramics were studied in detail. The experimental results showed that the crystal structure of ceramics gradually transformed from orthorhombic phase into pseudo-cubic phase with doping of xCa(Zn1/3Nb2/3)O3. With increasing of the CZN concentration, the ceramic density increased and reached the highest value (4.29 g/cm3) at x = 0.08 mol, besides, the grain size of the ceramics decreased gradually, the microstructure more uniform, the grains are packed with clear grain boundaries, fewer pores, especially at x = 0.08 mol. With the dense and fine-grained microstructures, the optical transmission of the ceramics is strong, the ceramic sample with x = 0.08 mol exhibits stably high transmittance above 60% in the visible spectrum and the largest optical band gap energy (Eg = 3.0 eV) was obtained. The Curie temperature (TC) decreases when the concentration of CZN increases. The broadness of dielectric peaks around Tm indicated a diffusive phase transition for all compositions suggesting the relaxor-like behavior of KNN-xCZN ceramic systems.

关键词： Microstructure Optical Property Dielectric Ferroelectric KNN-xCZN

Influences of Cyanobacterial Toxins Microcystins on the Seedling of Plants

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Journal of Environmental Protection 2014年第1期5卷 35-41页

作者： thanh-Son Dao Thai-hang Le thanh-Luu Pham Lan-Chi Do-Hong Phuoc-Dan Nguyen Graduate School of Life and Environmental Sciences University of Tsukuba Japan Institute for Environment and Resources Ho Chi Minh City Vietnam University of Technology Ho Chi Minh City Vietnam Vietnam National University Ho Chi Minh City Vietnam

Cyanobacterial blooms associated by their toxins have been increasing in frequency in fresh water bodies throughout the world. Among the cyanobacterial toxins, microcystins (MC) are the most common and cause severe adverse impacts on plants, aquatic organisms and human beings. In this study, the effects of MC (at the concentrations of 20 and 200 μg·L-1) from field water and crude extract of cyanobacterial scum (mainly Microcystis spp.) from the Dau Tieng Reservoir, Vietnam, on the seedlings of three plants, Brassica rapa-chinensis, B. narinosa and Nasturtium officinale, were investigated for over a period of 7 days. The results showed that MC reduced the fresh weight, root and shoot length of the exposed seedlings. In addition, abnormalities of leaf shape and color of B. rapa-chinensis under exposure to MC were observed. The results implied that MC were taken up and might be accumulated in the seedlings possessing potential risk to consumers as seedlings of these plants are a common food source for Vietnamese. To the best of our knowledge, this is the first report on the effects of MC on B. rapa-chinensis, B. narinosa and N. officinale.

关键词： Microcystins Adverse Effects Fresh Weight Root and Shoot Length Abnormalities

Advances in the light field displays based on integral imaging and holographic techniques(Invited Paper)

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Chinese Optics Letters 2014年第6期12卷 16-20页

作者： Nam Kim Md. Ashraful Alam Le thanh Bang Anh-Hoang phan Mei-Lan Piao Munkh-Uchral Erdenebat School of Electrical and Computer Engineering Chungbuk National University410 Sungbong-ro Heungdeok-gu Cheongju Chungbuk 361-763 Korea

Light field displays comprise three-dimensional （3D） visual information presentation devices capable of providing realistic and full parallax autostereoscopic images. In this letter, the recent advances in the light field displays based on integral imaging （II） and holographic techniques are presented. Several advanced approaches to demonstrate the light field displays including viewing angle enhancement techniques of the II display, a fast hologram generation method using graphics processing unit （GPU） and multiple WRPs, and a holographic microscopy to display the living cells are reported. These methods improve some important constraints of the light field displays and add new features.

关键词： Advances in the light field displays based on integral imaging and holographic techniques II GPU

A Comparison of Control Methods for Z-Source Inverter

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Energy and Power Engineering 2012年第4期4卷 187-195页

作者： Cong-thanh Pham Anwen Shen phan Quoc Dzung Nguyen Bao Anh Nguyen Xuan Phu Dept of Control Science and Engineering Huazhong University of Science and Technology Wuhan China HCMC University of Technology Ho Chi Minh City Vietnam

In recent years, Z-source inverters (ZSI) have been proposed as an replacement power conversion concept which it has both voltage buck and boost abilities. In addition, ZSI doesn’t require dead-time to protection short circuit at two switches any of the same phase leg in the inverter bridge and to achieve optimal harmonic of current, voltage. this paper presents two different control methods (CM) for ZSI. The aim of this study to compare between two modulation methods, there are modi?ed space vector pulse width modulation method (MSVM) and the simple boost control (SBC) about the unique harmonic performance features, the total average and peak switching device power of the inverter system. In addition, this paper also analyzes about the ability exceed modulation index in linear region of two CM using MATLAB/Simulink.

关键词： Buck-Boost Current Source Inverters (CSIs) Pulse-Width Modulation (PWM) Voltage Source Inverters (VSIs) Z-Source Inverters (ZSI)

Piglet Diarrhea and Technology Transfers to Prevent E. coli Infection at Small-Holder Pig Farms in Binh Dinh, Vietnam

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Journal of Agricultural Science and Technology(A) 2014年第8期4卷 696-705页

作者： Nguyen Quang Linh Hoang Nghia Duyet Tran Quang Vui Du thanh hang Centre for Incubation and Technology Transfers Hue University Hue 50999 Vietnam Faculty of Animal Husbandry and Veterinary Medicine College of Agriculture and Forestry Hue University Hue 50999 Vietnam

The study aims at finding alternative interventions for the prevention ofE. coli infection in piglets so as to boost farmers＇ benefits and improve environment in the area. Data were collected from one experimental group consisting of 210 small pig holder farms and one control group of 70 farms. All of 280 litters and sows were analyzed and the techniques of early vaccination at 60-80 d of pregnant （time 1） were applied and repeated after 10 d with E. coli vaccine to produce antibodies through milk. The percentage of piglets with diarrhea caused by E. coli significantly decreased from 75.7% to 18.9%. Injection of E. coli vaccine for the pregnant sows created antibodies for young piglets through colostrums. The treatment of E. coli cost 45,420 Vietnam Dong （VND） per litter in the experimental group and that was 156,000 VND/litter in the control group. Use of betel-bokashi （bio-product as plant antibiotics and Lactobacillus） to treat piglet diarrhea was proved safe and effective. Litter size and average weight at birth and weaning were improved significantly （P 〈 0.05）. The average weaned weight of piglets and sows were 11.2 kg and 118.6 kg in the experimental group, compared to 9.4 kg and 89.9 kg in the control group, respectively. Piglets in the experimental group had good health, no diarrhea and a shorter weaning time （2 d） and mating interval 2.22 days earlier than those in the control group. The average profit of 210 households was significantly higher in the experiment group： feed-cost was much lower than that in the control group. Small-holder farms implementing the experiments of applying the techniques received more financial profit, which was 1,502,000 VND per year per sow, while those who did not apply the techniques gained only 223,000 VND per year per sow.

关键词： Piglets sows E. coli infection households benefit.

越南高校财务管理自主权存在的问题及对策研究

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越南高校财务管理自主权存在的问题及对策研究

作者：范清水（phan thanh Thuy）哈尔滨工业大学

学位级别：硕士

随着世界教育发展，越南高等教育在大众化进程中，高校办学自主权慢慢成为越南高等教育的新目的、新方法，用来强化高校的自主创新能力，促进高教育的发展、提高教育质量。越南高校获得财务管理自主权是近年来越南高等教育改革的重大... 详细信息

随着世界教育发展，越南高等教育在大众化进程中，高校办学自主权慢慢成为越南高等教育的新目的、新方法，用来强化高校的自主创新能力，促进高教育的发展、提高教育质量。越南高校获得财务管理自主权是近年来越南高等教育改革的重大举措。本文运用高校财务管理理论的分析框架，首先对越南高等学校在获得财务管理自主权之前的状况进行分析，其次对越南3所典型大学进行分析。以实行自主财务的自2010年至2012年三年为考察期限，调查其连续三年的财政报告，进行统计分析，并与自主财务之前相比较。在此基础上，论文从经费总量，经费来源渠道与结构，经费使用结构等三个方面，对越南高等学校自主财务前后的变化，优势和存在的问题进行了系统的分析。最后论文以部分发达国家的经验为参照系，并结合越南的实际情况，在宏观和微观两个层面提出了越南高等学校财务管理进一步完善的对策建议。本文研究结果将会给越南教育管理部门和高校内部财务管理提供启发和借鉴。

关键词：越南高校财务管理财务管理自主权高校财务管理对策

Rapid and efficient characterization of cervical collagen orientation using linearly polarized colposcopic images

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Journal of Innovative Optical Health Sciences 2023年第5期16卷 21-31页

作者： Cat phan Ngoc Khuong Dung Nguyen Huu Quang Hai Pham thanh Long Nguyen Quynh Nguyen Ngoc Duc Le Huynh Tien Tran Van Tu Ly Anh Department of Applied Physics Ho Chi Minh City University of Technology 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City 700000Vietnam Quality Management Department Tu Du Hospital 284 Cong QuynhDistrict 1 Ho Chi Minh City 700000Vietnam Department of Biomedical Engineering Nguyen Tat thanh University 300A Nguyen Tat Thanh District 4Ho Chi Minh City 700000Vietnam Faculty of Science and Technology Jean Monnet University 11 Rue du Docteur Annino Saint Etienne 42000France

Collagen provides tissue strength and structural *** fication of the orientated dispersion of collagen fibers is an important factor when studying the mechanical properties of the *** this study,for the first time,a new method for rapid characterization of the collagen fiber orientations of the cervix using linearly polarized light colposcopy is presented.A total of 24 colposcopic images were captured using a cross-polarized imaging system with white LED light *** the preprocessing stage,the Red channel of the RGB image was chosen,which contains no information of the blood vessels because of the low-absorption of blood cells in the red ***,which is an ImageJ plug-in,was used to estimate the local orientation of the collagen *** result shows that in the nonpregnant cervix,the middle zone(Zone 2)has circumferentially aligned collagen fibers while the inner zone(Zone 1)has randomly *** collagen fiber dispersion in Zone 2 is much smaller than that in Zone 1 at all four quadrants region(anterior,posterior,left,and right quadrant).this new analysis technique could potentially combine with diagnostic tools to provide a quantitative platform of collagen fibers in the clinic.

关键词： Cervix collagen fibers collagen orientation coherency cross-polarized imaging colposcopy