27,211 Hits in 1.2 sec

RSSI prediction using Machine Learning models [article]

Tung Giang Le, Huy Tung Quach, Thu Thao Dao Le, Manh Hoang Tran
2021 arXiv   pre-print
Chúng ta xây dựng hàm mất mát J(θ) là trung bình của tổng bình phương giá trị sai lệch trên từng điểm dữ liệu trên tập huấn luyện [15] .  ...  Hàm mục tiêu của mô hình SVM sẽ có dạng: L(w) = 1 2 ||w|| 2 2 + C N n=1 ξ n (7) trong đó, w là ma trận trọng số, các tham số của mô hình học máy để tính toán và phân loại đầu ra theo đầu vào, C là tham  ... 
arXiv:2112.10957v1 fatcat:gjbpvhnqvngsrnoq473d2nr43u

In vitro and in silico determination of glutaminyl cyclase inhibitors

Phuong-Thao Tran, Van-Hai Hoang, Jeewoo Lee, Tran Thi Thu Hien, Nguyen Thanh Tung, Son Tung Ngo
2019 RSC Advances  
Rational design of new hQC inhibitors.
doi:10.1039/c9ra05763c fatcat:4gop2cd4zbbrfb3ve5zfpuiryq

Impact of Comorbid Chronic Conditions to Quality of Life among Elderly Patients with Diabetes Mellitus in Vietnam

Huong Nguyen, Tung Tran, Cuong Nguyen, Tung Tran, Bach Tran, Carl Latkin, Cyrus Ho, Roger Ho
2019 International Journal of Environmental Research and Public Health  
Type 2 diabetes mellitus (T2DM) is a major cause of disease burden in the elderly population. This study aimed to measure the quality of life (QOL) among patients with T2DM and the associations between co-morbidities and QOL. A cross-sectional study was conducted on 194 patients with T2DM. The minimal clinically important difference (MCID) scores were used to indicate the clinically meaningful differences of comorbidities on quality of life. A Tobit regression was employed to find relationships
more » ... find relationships between QOL and comorbidities. The mean scores of QOL domains were 50.8 (SD = 13.2) in physical, 62.4 (SD = 11.5) in psychological, 52.3 (SD = 10.2) in social relationship, and 64.3 (SD = 10.1) in environmental. Digestive and neuropsychiatric diseases had the strongest negative associations with physical QOL of patients. Neuropsychiatric diseases also had the biggest effect on psychological and environmental QOL. Meanwhile, in the social domain, respiratory diseases had the greatest effect. In conclusion, patients with T2DM struggled to perform physical functions. In addition, comorbidities significantly reduced the QOL of T2DM patients.
doi:10.3390/ijerph16040531 pmid:30781767 pmcid:PMC6406931 fatcat:lx5lfx73sjemtgcpk64cxvtem4

Ovule siRNAs methylate and silence protein-coding genes in trans [article]

Diane Burgess, Hiu Tung Chow, Jeffrey W Grover, Michael Freeling, Rebecca A Mosher
2021 bioRxiv   pre-print
This trans-methylation is associated with transcriptional silencing of target genes and may be responsible for seed abortion in RdDM mutants.  ...  Here we show that siRNAs are often produced from gene fragments embedded in siren loci, and that these siRNAs can trigger methylation in trans at related protein-coding genes.  ...  expression of genes targeted in trans.  ... 
doi:10.1101/2021.06.10.447945 fatcat:253u7tidhjh57hrmhdpvrpjxre

Exploring factors influencing on organizational repurchases intention in B2B tourism context

Tung Tran Anh, Chau Tran Ngoc Diem, Linh Nguyen Tran Cam, Thuy Nguyen Viet
2020 Management Science Letters  
The relationship between perceived values; customer satisfaction and customer repurchase intention of organizations toward tour choice in Ho Chi Minh City (HCMC) was defined in this study. In addition, this study also identified the impacts of the five independent variables of tangibles, assurance, empathy, reliability and responsiveness and the intervening variables of perceived value and customer satisfaction on repurchase intention. Quantitative research was conducted by questionnaire with
more » ... uestionnaire with 300 middle and small organizations in HCMC, with variety of statistical techniques; including factor analysis, multiple regression analyses and path analysis to find the relationship between independent and dependent variables. Based on the results, the study suggests the fact that a higher perceived value would lead to a higher customer satisfaction. When consumers feel satisfied with services, they feel the choice was correct, which increases the customer's confidence and intention to repurchase the service in future.
doi:10.5267/j.msl.2019.9.027 fatcat:hk4eclcclvem3bphm2bsfbovsu

Improvement of Thermal and Mechanical Properties of Vietnam Deproteinized Natural Rubber via Graft Copolymerization with Methyl Methacrylate

Thi Nhan Nguyen, Hieu Nguyen Duy, Dung Tran Anh, Thuong Nghiem Thi, Thu Ha Nguyen, Nam Nguyen Van, Tung Tran Quang, Tung Nguyen Huy, Thuy Tran Thi
2020 International Journal of Polymer Science  
In this study, we investigated the improvement of the thermal and mechanical properties of Vietnam deproteinized natural rubber (DPNR) via graft copolymerization of methyl methacrylate (MMA). The graft copolymerization was achieved successfully in latex stage using tert-butyl hydroperoxide (TBHPO) and tetra-ethylenepentamine (TEPA) as radical initiators at 30°C. By grafting with various MMA feeds and initiator concentration of 6.6×10−5 mol/g-rubber, the highest grafting efficiency and
more » ... iency and conversion were achieved at MMA of 15 wt.% per kg of rubber, 68% and 90%, respectively. The structure of grafted copolymers was characterized by 1H NMR, FTIR-ATR, and GPC, and thermal properties were investigated through DSC and TGA measurements. These showed that graft copolymers were more stable and rigid than DPNR. Storage modulus (G′) of graft copolymer was found to double that of DPNR, which contributed to the formation of graft copolymer. After sulfur vulcanization, the mechanical properties of DPNR-graft-PMMA, such as tensile strength, tear strength, and hardness, were improved significantly. Curing behaviors of the graft copolymers were found to be remarkably better than virgin DPNR.
doi:10.1155/2020/9037827 fatcat:5mfcqowc6baexikc3fmkb3oi54

Pairing effects on neutron elastic scattering at low-energies

Trần Viết Nhân Hào, Hoàng Tùng Nguyễn, Diệu Thùy Trần, Quang Tâm Đỗ, Ngọc Quỳnh Trân Trần, Anh Kim Ha
For the first time, a realistic microscopic calculation for low-energy neutron-nucleus elastic scattering off open-shell nuclei is carried out within the framework of particle-vibration coupling (PVC). In this study, the pairing correlations of the ground state are taken into account. The dependence of the angular distributions on the pairing gaps have been discussed.
doi:10.26459/hueuni-jns.v129i2a.5747 fatcat:qy3ycrhiqbasza465ysqcmbsju

Micro Credit Risks Model Research

Thi Thuy Linh Tran, Phuong Ngan Doan, Thanh Tung Duong
2021 Zenodo  
The objective of the study is to propose a model for micro-credit risk assessment in Vietnam. To accomplish the research objectives, we conduct a synthesis of related studies. In-depth interview with experts, businesses and banks in Vietnam to propose models and methods of analysis and evaluation
doi:10.5281/zenodo.5040183 fatcat:xyyfx6j6gjblpcv47unjpkfr4u

Infinite AC Ladder with a "Twist" [article]

Quan M. Nguyen, Linh K. Nguyen, Tung X. Tran, Chinh D. Tran, Truong H. Cai, Trung Phan
2020 arXiv   pre-print
The infinite AC ladder network can exhibit unexpected behavior. Entangling the topology brings even more surprises, found by direct numerical investigation. We consider a simple modification of the ladder topology and explain the numerical result for the complex impedance, using linear algebra. The infinity limit of the network's size corresponds to keeping only the eigenvectors of the transmission matrix with the largest eigenvalues, which can be viewed as the most dominant modes of electrical
more » ... modes of electrical information that propagate through the network.
arXiv:2010.05645v2 fatcat:huoz3ynujra4noi6k5uodeae5m

Alcohol Use Disorder among Patients Suffered from Road Collisions in a Vietnamese Delta Province

Hai Minh Vu, Tung Thanh Tran, Giang Thu Vu, Cuong Tat Nguyen, Chau Minh Nguyen, Linh Gia Vu, Tung Hoang Tran, Bach Xuan Tran, Carl A. Latkin, Cyrus S.H. Ho, Roger C.M. Ho
2019 International Journal of Environmental Research and Public Health  
Traffic collisions have continuously been ranked amongst the top causes of deaths in Vietnam. In particular, drinking has been recognized as a major factor amplifying the likelihood of traffic collisions in various settings. This study aims to examine the relationship between alcohol use and traffic collisions in the current context of Vietnam. A cross-sectional study was conducted on 413 traffic collisions patients in six health facilities in the Thai Binh Province to investigate the level of
more » ... igate the level of alcohol consumption and identify factors influencing alcohol use among these patients. The Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) scale was used to determine the problematic drinking behavior of the participants. The percentage of patients having problematic drinking was more than 30%. Being male, having a high household income, and working as farmer/worker were risk factors for alcohol abuse. People causing accidents and patients with a traumatic brain injury had a higher likelihood of drinking alcohol before the accidents. This study highlights the necessity of more stringent laws on reducing drink-driving in Vietnam. In addition, more interventions, especially those utilizing mass media like educational campaign of good behavior on social networks, are necessary to reduce alcohol consumption in targeted populations in order to decrease the prevalence and burden of road injuries.
doi:10.3390/ijerph16132423 pmid:31288451 pmcid:PMC6651652 fatcat:sfwcsdhfkveyhieib2yieiref4

Improving Generalization and Stability of Generative Adversarial Networks [article]

Hoang Thanh-Tung, Truyen Tran, Svetha Venkatesh
2019 arXiv   pre-print
Generative Adversarial Networks (GANs) are one of the most popular tools for learning complex high dimensional distributions. However, generalization properties of GANs have not been well understood. In this paper, we analyze the generalization of GANs in practical settings. We show that discriminators trained on discrete datasets with the original GAN loss have poor generalization capability and do not approximate the theoretically optimal discriminator. We propose a zero-centered gradient
more » ... ntered gradient penalty for improving the generalization of the discriminator by pushing it toward the optimal discriminator. The penalty guarantees the generalization and convergence of GANs. Experiments on synthetic and large scale datasets verify our theoretical analysis.
arXiv:1902.03984v1 fatcat:wzz2prjvbbe7bbu6oxoc64xs4a

Đau bụng cấp do nhồi máu mạc nối lớn: Thông báo ca lâm sàng

Trần Quế Sơn, Nguyễn Chiến Quyết, Vũ Đức Long, Trần Thanh Tùng, Trần Minh Đức, Trần Thu Hương, Lun Panha, Trần Hiếu Học
2021 Tap chi nghien cuu y hoc  
Nhồi máu hoại tử mạc nối là một nguyên nhân hiếm gặp gây đau bụng cấp do xoắn, tắc mạch mạc nối hoặc nhiễm trùng ổ bụng. Biểu hiện lâm sàng không đặc hiệu nên nhiều bệnh nhân được chỉ định mổ với chẩn đoán trước mổ là viêm túi mật, viêm ruột thừa hay thủng tạng rỗng. Với sự ra đời của chụp cắt lớp vi tính, nhồi máu mạc nối được chẩn đoán xác định nhiều hơn trước khi phẫu thuật. Chúng tôi báo cáo 2 ca lâm sàng nhồi máu mạc nối lớn vào viện vì đau bụng dưới sườn phải. Chụp cắt lớp vi tính có dấu
more » ... lớp vi tính có dấu hiệu thâm nhiễm, dày mạc nối. Hai bệnh nhân đều được mổ nội soi cấp cứu cắt bỏ phần mạc nối lớn bị nhồi máu, cả 2 bệnh nhân khỏi, ra viện sau 3 ngày điều trị. Kết luận: phẫu thuật nội soi ổ bụng nên được chỉ định vừa để chẩn đoán nguyên nhân, vừa điều trị cho kết quả tốt.
doi:10.52852/tcncyh.v138i2.91 fatcat:h2tck3w7jbe7hos342q7qyhqx4

BBrowser: Making single-cell data easily accessible [article]

Tri Le, Tan Phan, Minh Pham, Dat Tran, Loc Lam, Tung Nguyen, Thao Truong, Hy Vuong, Tam Luu, Nam Phung, Trang Nguyen, Oanh Pham (+15 others)
2020 bioRxiv   pre-print
Raw data are aligned and quantified by Hera-T, an accurate and efficient algorithm for single-cell sequencing data (Tran et al., 2019) .  ... 
doi:10.1101/2020.12.11.414136 fatcat:v7y3uelglfgthbc7u32slx3guy

MOESM1 of Advanced non-cardia gastric cancer and Helicobacter pylori infection in Vietnam

Tran Binh, Vo Tuan, Ho Dung, Pham Tung, Tran Tri, Ngo Thuan, Vu Khien, Phan Hoan, Rumiko Suzuki, Tomohisa Uchida, Tran Trang, Yoshio Yamaoka
2017 Figshare  
Additional file 1. Nucleotide sequence of full-length cagA and phylogenetic analysis.
doi:10.6084/m9.figshare.c.3856945_d1.v1 fatcat:xemn2aaljjdwhorcyyg64hhsvu

Polysubstance Use among Patients Enrolling in Methadone Maintenance Treatment Program in a Vietnam Province with Drug-Driven HIV Epidemic

Tuan Anh Le, Duyen T. T. Pham, Travis T. C. Quek, Giang Thu Vu, Chi Linh Hoang, Tung Thanh Tran, Cuong Tat Nguyen, Ninh Hai Thi Tran, Quan Hoang Vuong, Tung Hoang Tran, Bach Xuan Tran, Carl A. Latkin (+2 others)
2019 International Journal of Environmental Research and Public Health  
Methadone maintenance treatment (MMT) has been scaled up significantly in recent years. This study aimed to investigate the pattern of polysubstance use in 395 MMT patients and its contextualized associated factors. A cross-sectional study was performed in three outpatient MMT clinics in Nam Dinh Province. Multivariate Poisson regression was used to identify factors associated with polysubstance use status. The mean MMT duration and the current MMT dose was 3.3 years and 69.2 mg, respectively.
more » ... mg, respectively. Among participants, 24.8% reported daily alcohol use, 68.6% smoked regularly, and 6% used illicit drugs. Peer pressure and MMT suboptimal adherence were found to associate with continual usage of drugs (47.8%). Participants who lived with a spouse/partner, were self-employed, and smoked were more likely to drink alcohol. Those who drink were also more likely to smoke, and vice versa. Recommendations for policymakers include community-based education and promotional programs aiming to decrease substance usage in the community as well as encouraging and supporting the private health sector in establishing private MMT services and clinics. Further longitudinal studies on polysubstance usage among MMT patients should also be conducted.
doi:10.3390/ijerph16183277 pmid:31500107 pmcid:PMC6765943 fatcat:ekshl3mxdjdlzkmk6k6obl2wwm
« Previous Showing results 1 — 15 out of 27,211 results