Characteristics of retracted articles based on retraction data from online sources through February 2019

Quan-Hoang Vuong,Viet-Phuong La,Manh-Tung Ho,Thu-Trang Vuong,Manh-Toan Ho 한국과학학술지편집인협의회 2020 Science Editing Vol.7 No.1

Purpose: Although retractions are commonly considered to be negative, the fact remains that they play a positive role in the academic community. For instance, retractions help scientific enterprise perform its self-correcting function and provide lessons for future researchers; furthermore, they represent the fulfillment of social responsibilities, and they enable scientific communities to offer better monitoring services to keep problematic studies in check. This study aims to provide a thorough overview of the practice of retraction in scientific publishing from the first incident to the present. Methods: We built a database using SQL Server 2016 and homemade artificial intelligence tools to extract and classify data sources including RetractionWatch, official publishers’ archives, and online communities into ready-to-analyze groups and to scan them for new data. After data cleaning, a dataset of 18,603 retractions from 1,753 (when the first retracted paper was published) to February 2019, covering 127 research fields, was established. Results: Notable retraction events include the rise in retracted articles starting in 1999 and the unusual number of retractions in 2010. The Institute of Electrical and Electronics Engineers, Elsevier, and Springer account for nearly 60% of all retracted papers globally, with Institute of Electrical and Electronics Engineers contributing the most retractions, even though it is not the organization that publishes the most journals. Finally, reasons for retraction are diverse but the most common is “fake peer review”. Conclusion: This study suggests that the frequency of retraction has boomed in the past 20 years, and it underscores the importance of understanding and learning from the practice of retracting scientific articles.

Research on Macroeconomics Factors Influencing Seaborne Trade in Vietnam: An Autoregressive Distributed Lag Approach

Thu Giang VUONG,Toan Thuyen VUONG 국제이네비해양경제학회 2021 International Journal of e-Navigation and Maritime Vol.16 No.1

It would appear that the diversification of the methods of international transport has made global trade much easier. With the outstanding advantages of cargo volumes, shipping costs and safety of goods, sea transport always accounts for a high proportion of the export and import activities of coastal countries. Today, therefore, seaborne trade is the main method of foreign trade in Vietnam and the world. Towards solutions in the area of seaborne trade development, this study aims to find the essential macroeconomics factors influencing directly seaborne trade by applying autoregressive distributed lag (ARDL) models with a case study of Vietnam. This paper finds that Vietnam’s GDP and FDI have positive impacts on Vietnam’s seaborne trade turnover in both the short run and long run. The findings here make a significant contribution to the search for practical scientific solutions to enhance Vietnam’s seaborne trade development.

What Makes Vietnamese (Not) Attend Periodic General Health Examinations? A 2016 Cross-sectional Study

Quan-Hoang Vuong,Quang-Hoi Vu,Thu-Trang Vuong 질병관리본부 2017 Osong Public Health and Research Persptectives Vol.8 No.2

Objectives: General health examinations (GHE) have become an increasingly common measure for preventive medicine in Vietnam. However, little is known about the factors among Vietnamese people who attend or miss GHE. Budget or time constraints remain to be evaluated for better-informed policy making. This study investigates factors affecting behaviors in attending periodic GHE. The main objectives are as follows: (1) to explore empirical relationships between influencing factors and periodic GHE frequencies, and (2) to predict the probabilities of attending GHE under associated conditions. Methods: The study used a 2,068-observational dataset, obtained from a Vietnamese survey in 2016. The analysis was then performed using the methods of baseline-category logits for establishing relationships between predictor and response variables. Results: Significant relationships were found among the expenditure and time consumption, health priority and sensitivity to health data, insurance status, and frequency of GHE, with most p-values = 0.01. Conclusion: Generally, people attended the GHE when they had the resources and health priorities (72.7% probability). Expenditure and time remain key obstacles to the periodic GHE. Health priority and health data are important in improving rates for GHEs. Health insurance should play a positive role in promoting the GHE.

Development of New Haptic Interface using "Dielectric Elastomers

nguyen Huu Lam Vuong,Nguyen Huu Chuc,Sungmoon Jin,Baek Chul Kim,Duk Sang Kim,Kuang Jun An,Vuong Hong Phuc,Ja Choon Koo,Hyungpil Moon,Youngkwan Lee,Jae Do Nam,Hyouk Ryeol Choi 제어로봇시스템학회 2009 제어로봇시스템학회 합동학술대회 논문집 Vol.2009 No.12

Objectively Measured Physical Activity of Vietnamese Adults With Type 2 Diabetes: Opportunities to Intervene

Vuong Van Do,Jonine Jancey,Ngoc Minh Pham,Chung Thanh Nguyen,Minh Van Hoang,Andy H. Lee 대한예방의학회 2019 Journal of Preventive Medicine and Public Health Vol.52 No.2

Objectives: To objectively determine and compare the physical activity (PA) levels of adults newly diagnosed with type 2 diabetes (T2D) and adults without T2D in Vietnam using an accelerometer. Methods: A total of 120 participants with newly diagnosed T2D and 120 adults without T2D were recruited from a large hospital in Hanoi, the capital city of Vietnam. All participants wore an ActiGraph GT3X accelerometer for at least 5 days, including 1 weekend day. Freedson cut-off points were used to estimate different intensities of PA. In addition, comparisons between groups were made with respect to achieving the World Health Organization (WHO) and International Diabetes Federation (IDF) recommended PA guidelines. Results: Men with T2D had significantly lower levels of PA than men without T2D. The respective multivariable-adjusted mean values of daily step count, daily light-intensity, moderate-intensity, and moderate-to-vigorous-intensity PA were approximately 14%, 19%, and 22% lower in the men with T2D than in their non-T2D counterparts. However, women with T2D accumulated a greater number of steps per day than women without T2D. Only 59.2% of the adults with T2D met the minimum recommended level of PA (WHO and IDF), compared to 74.2% of adults without T2D (p<0.05). After adjusting for potential confounders, participants with T2D experienced 50.0% significantly lower odds of achieving PA recommendations. Conclusions: Vietnamese men with T2D were less physically active than those without T2D, and adults with T2D were less likely to meet PA guidelines. The results suggest a need for integrating PA into the self-management of this chronic condition.

Factors Affecting Savings Deposit Decision of Individual Customers: Empirical Evidence from Vietnamese Commercial Banks

VUONG, Bui Nhat,TUNG, Dao Duy,GIAO, Ha Nam Khanh,DAT, Ngo Tan,QUAN, Tran Nhu Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.7

Capital mobilization is a traditional business of commercial banks and is one of the core foundations for the development of a bank. Capital mobilization is the main input in the operation of a bank, and this is also the basis for generating output for credit activities as well as other banking activities. This study aims to determine the main factors that affect the decisions of individual customers to put savings deposit in Vietnamese commercial banks. Survey data collected from 403 individual customers were analyzed to provide evidence. The results from the multiple regression analysis by using SPSS software revealed that all scales in this study were reliable, and there were six components impacting the savings deposit decision of individual customers from the strongest to the weakest in the following order: the form of promotion, bank brand, service quality, interest rate policy, and employee knowledge and attitude. Besides, the finding showed customers who have high income tend to have a stronger decision on savings deposits in commercial banks. The main findings of this article provide some empirical implications for marketers in banks and serve as a suggestion to improve these factors in order to retain and attract individual customers' savings deposit decisions.

Ecology and Behavior Overwintering Two Aphid Species, Lipaphis pseudobrassicae and Myzus persicae(Homoptera: Aphididae), in Southern Greenhouse Area in Korea

Vuong, Pham-Thi,Kim, Jinho,Yoohan Song Korean Society of Applied Entomology 2003 Journal of Asia-Pacific Entomology Vol.6 No.1

In southern Korea, the two aphid species, Myzus Pessicae(Sulzer) and Lipaphis Pseudobrassicae (Davis), had been known to have sexual phase to produce hibernating eggs on their alternate hosts. However, we have fequently found that they were still alive in the parthenogenetic form even in below freezing conditions in winter. This study had been focused on verifying the possibility of overwintering of the two important aphid species in the parthenogenetic morph, by comparing the population density changes within greenhouse and open field condition. In green- house condition, though not heated, both species successfully continued reproducing in a parthenogenetic form. In open field, L. pseudobrassicae successfully survived and reproduced on chinese cabbage and spinach even below freezing temperatures. M. persicae were also able to survive in the winter but not as much capability of reproduction as L. preudobrassicae. This study provided the evidence that the aphid infestations in greenhouse can be mostly from overwintering populations in the parthenogenetic morph in southern greenhouse area of Korea.

A Model of Factors Affecting Entrepreneurial Intention among Information Technology Students in Vietnam

VUONG, Bui Nhat,PHUONG, Nguyen Ngoc Duy,HUAN, Dao Duy,QUAN, Tran Nhu Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.8

In recent decades, the research field of entrepreneurship phenomenon has significantly increased in both quantity and sophistication. In Vietnam, paradoxically, while creating a new business venture has become a tendency, the interest in studying entrepreneurs seems not to be thoroughly investigated. This research aims to evaluate the factors that affect the entrepreneurial intention of information technology (IT) students in Vietnam. The authors make use of mixed methods including both quantitative research method and qualitative research method. The qualitative research method is employed to identify meanings, confirmations, adjustments, and compliments for concept-measurement variables in the conceptual model. Quantitative research is conducted from a sample of 424 IT senior students across many universities in Vietnam. Questionnaires have been sent to students to evaluate the measurement scale and appropriateness of the research model. Results from multiple regression highlighted five independent variables affecting the dependent variable, the entrepreneurial intention, in a descending order as following: entrepreneurial educational environment, personal characteristics, perception of feasibility, entrepreneurial supports, and financial accessibility. In addition, this research has proved that the variable attitudes towards entrepreneurship partially mediated among the interrelationship of the aforementioned variables. From this research, the authors make some recommendations to enhance entrepreneurial intentions of IT students in Vietnam.

EDTA Linker for S-scheme CdS/Spinel Oxides Heterojunction Photocatalyst for Visible-Light-Driven Hydrogen Production

VUONG HOAI THANH,MAHVELATISHAMSABADI TAHEREH,DANG THANH TRUONG,허승현,정진석 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.1

Herein, the fabrication of S-scheme CdS/ZMO photocatalysts through EDTA bridges for hydrogen production was reported. In this system, the role of EDTA molecules as a linker for binding CdS and ZMO (ZnMn 2 O 4 /Mn 3 O 4 spinel oxides composite) was investigated in detail. The optimized sample showed superior photocatalytic hydrogen evolution rate of 26.34 mmol. g −1 .h −1 , nearly two times higher than the system without EDTA. The outstanding photocatalytic activity could be due to the effi cient charge transfers caused by the interaction between EDTA molecules and two semiconductors. This study provides a clear insight into the critical role of inexpensive organic electron mediators in enhancing the photocatalytic performance of heterojunction photocatalysts.

Neutron spectroscopy using pure LaCl₃ crystal and the dependence of pulse shape discrimination on Ce-doped concentrations

Vuong, Phan Quoc,Kim, Hongjoo,Luan, Nguyen Thanh,Kim, Sunghwan Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.11

We report a simple technique for direct neutron spectroscopy using pure LaCl₃ crystals. Pure LaCl₃ crystals exhibit considerably better pulse shape discrimination (PSD) capabilities with relatively good energy resolution as compared with Ce-doped LaCl₃ crystals. Single crystals of pure and Ce-doped LaCl₃ were grown using an inhouse-developed Bridgman furnace. PSD capabilities of these crystals were investigated using ²⁴¹Am and ¹³⁷Cs sources. Fast neutron detection was tested using a²⁵²Cf source and three separate bands corresponding to electron, proton, and alpha were observed. The proton band induced by the ³⁵Cl(n,p)³⁵S reaction can be used for direct neutron spectroscopy because proton energy is proportional to incident neutron energy. Owing to good scintillation performance and excellent PSD capabilities, pure LaCl₃ is a promising candidate for space detectors and other applications that necessitate gamma/fast neutron discrimination capability.