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Thi Phuong Diu TRAN(Thi Phuong Diu TRAN ),Thi Van Khanh NGUYEN(Thi Van Khanh NGUYEN ),Thanh Quang DO3(Thanh Quang DO3 ),Cong Nghiep NGUYEN(Cong Nghiep NGUYEN ),Thu Thuy LUONG(Thu Thuy LUONG ) 한국유통과학회 2022 유통과학연구 Vol.20 No.10
Purpose: This article focuses on exploring the associations between job satisfaction, organizational commitment, and turnover intention. Specifically, this study estimates the impacts of Vietnamese employees’ job satisfaction on their organizational commitment and turnover intention in FDI enterprises. Research design, data and methodology: The measures are adapted from previous studies to develop a questionnaire with a seven-point Likert scale. The dataset is directly collected from 227 respondents who are employees at FDI enterprises situated in the North of Vietnam. The dataset is analyzed by quantitative approaches using SPSS 24.0 and AMOS 24.0. Results: The results show that while turnover intention is positively correlated with monthly income, it is negatively correlated with job satisfaction and organizational commitment. Also, organizational commitment is positively associated with job satisfaction among employees at FDI enterprises in Vietnam. Conclusions: The findings of this study will serve as useful references for administrators of FDI enterprises and policymakers to promote employees’ job satisfaction and retain skilled employees.
Do Ngoc Khue,Tran Dai Lam,Nguyen Van Chat,Vu Quang Bach,Do Binh Minh,Vu Duc Loi,Nguyen Van Anh 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
Here we report the study on the utilization of several advanced oxidation processes such as electro-oxidation and Fenton process in simultaneous treatment of two nitramine explosives: 2,4,6-trinitrophenyl-N-metylnitramine (Tetryl) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). The preliminary tests indicated that the electrolytic method using a TiO2/IrO2/RuO2-coated electrode could rapidly degrade Tetryl but not RDX. While the addition of certain amount of H2O2 induced an increase of Tetryl degradation yield but had insignificant effect on RDX decomposition, the use of Fenton’s reagent showed an enhanced efficiency in degradation of both nitramines. It can be concluded that among tested processes, Fenton process is the most effective for treatment of nitramine-containing wastewaters.
Tripterygium wilfordii (Celastraceae): A new generic and species record for the flora of Vietnam
Do Van Hai,Bui Hong Quang,Tran The Bach,Tran Duc BINH,Ritesh Kumar Choudhary,이중구 한국식물분류학회 2021 식물 분류학회지 Vol.51 No.3
Tripterygium wilfordii Hook.f. (Celastraceae), collected from Phia Oac-Phia Den National Park of Vietnam, is reported here as a new generic and species record for the flora of Vietnam. The genus Tripterygium differs from other genera of Celastraceae by its samara fruits, which become three-winged at maturity, and a scandent shrub. Taxonomic notes, descriptions, line drawing and photographs are provided, together with short notes on the distribution, ecology and phenology of Tripterygium wilfordii Hook.f. (Celastraceae).
Van Do Nguyen,Guinyun Kim,Duc Khue Pham,Duc Thiep Tran,Hee-Seock Lee,Hengsik Kang,In Soo Ko,Moo-Hyun Cho,Tien Thanh Kim,Van Duan Phung,남궁원,Young Seok Lee,Youngdo Oh 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.2
We measured isomeric cross-section ratios for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc, $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc, $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh, and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions at the 65-MeV electron linac of the Pohang Accelerator Laborator by using the activation method. Samples of natural Sc, Ti, Rh, and Fe metallic foils were irradiated in an uncollimated bremsstrahlung beam. The isomeric cross-section ratios were determined from the activity measurement with a high-purity germanium detector. The measured isomeric ratios were 0.21 $\pm$ 0.03, 0.12 $\pm$ 0.03, 1.43 $\pm$ 0.20, and 0.28 $\pm$ 0.04 for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc, $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc, $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh, and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions, respectively. The present results for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions are in good agreement with other measurements. The present results for $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc and $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh reactions are the first such measurements.
Van Do Nguyen,김귀년,A.K.M. Moinul Haque MEAZE,Duc Khue Pham,Duc Thiep Tran,이희석,고인수,K. DEVAN,조무현,Van Duan Phung,남궁원,이영석 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.3
The Pohang Neutron Facility, which consists of an electron linear accelerator, a water-cooled Ta target with a water moderator, and a time-of-flight path with an 11-m length, was constructed to measure neutron total cross-sections in the neutron energy region from thermal to several hundreds of eV by using the time-of-flight method. In order to utilize this pulsed neutron facility based on an electron linac, we have to understand the characteristics of the radiation fields produced in this facility. We used the multiple-foil activation method to measure the neutron and the photon distributions produced by a water-cooled Ta target with and without the water moderator./?P믭
Factors Affecting Parents' Intention to Choose English Centers: The Role of STEM Education
Tran, Do-Van-Anh,Nguyen, Ngoc-Duyen,Tang, Thai-Ngoc,Le, Dinh-Bao-Nhi,Vo, Huyen-Yen-Nhi,Le, Hoanh-Su Korea Multimedia Society 2020 The journal of multimedia information system Vol.7 No.1
Parents' desire for daily English practice for students and the urge for a etter English education has led to a demand for a highly qualified educational curriculum. In addition to getting deep-dive insights into parents' decision-making process, the increasingly important role of STEM education method has been proved in accordance with plenty of evidenced-based many of previous research. This study was conducted to examine the five independent factors affecting parents' intentions when designating English centers for their children, respectively named: Facility, Teachers, Brands, Social factors and Tuition. Through a preliminary approach, 235 samples were analyzed. Analysis of the sample responses reveals the importance level of five independent factors affecting Parents' intention to choose English centers in descending order: Facilities, Teachers, Brands, Tuition and Social factors. Furthermore, a positive correlation was found between STEM and Intention to choose English centers, indicating that whether the center applies STEM-related curriculum in English courses or not, in fact, has a significant impact on parents' decision. In terms of attitude towards STEM, further statistical tests revealed an interesting finding, which is the fact that how STEM affects Intention of parents is directly proportional to the Attitude towards STEM. With the help of SPSS 20 and AMOS 20, the SEM analysis was processed in order to draw conclusions about factors impacting Intentions to choose English centers. Combining with Multi-group analysis, the major role of STEM education has been assessed in relation to plenty of correlations. In light of recent major and massive growth of English teaching market in Vietnam, several suggestions and recommendations in terms of sustainable developments have been displayed in this research.
Dendropanax dentigerus, Dendropanax morbiferus, Dendropanax trifidus, flavonoids, morphology
Do Tran Van,이돈구,Thang Hoang Van 한국산림과학회 2005 Forest Science And Technology Vol.1 No.1
This study was conducted at the Acacia and Eucalyptus plantations and an unplanted area in Vietnam to firstly compare the appearance of native tree species between different plantations and an unplanted area, and secondly to examine the effect of planting densities and distances from the natural forest to plantations on the appearance and successful growth of native tree species. The area had previously suffered from many forest fires, grazing activity and shifting cultivation until 1990, and consequently had become degraded with low species diversity, low vegetation cover and low soil fertility. Circular plots of 200 m2 were used to collect data from January to April, 2004. Several diversity indices were recorded to evaluate the species diversity in the plantations and unplanted area. A total of 22 regenerated native tree species were found in the plantation of Acacia auriculiformis with a density of 860 trees per ha. In this plantation, the best planting density was 1,660 trees per ha. The lowest density was 467 trees per ha for a plantation of Eucalyptus camaldulensis with 12 regenerated native tree species. The number of regenerated native tree species and their density abundance in plantations at 300 m away from the natural forest were half of those at a distance of 50 m away.