Perception of Organizational Support to Lecturers' Research Motivation: The Case of Vietnam

NGUYEN, Thanh Do,BUI, Thi Hong Viet,NGUYEN, Thi Le Thuy,TRAN, Manh Dung,TRAN, Thi Kim Nhung Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2

The aim of this study is to test the direct relationship and the indirect relationship of the perceived organizational support to lecturers' research motivation through "expectation" factor (belief in ability). The subject of the study is lecturers who are teaching and researching in the fields of economic, management and business administration at universities in Vietnam. The questionnaires were directly sent to lecturers at scientific conferences, sent out via e-mail and Facebook, the questionnaires were designed on google docs and directly sent to the lecturers. The detailed sample includes 475 respondents. The results of a quantitative analysis with a research sample of 475 lecturers in economics universities in Vietnam show that it is impossible to separate between lecturers' research ability and motivation. Lecturers with increased expectation (in terms of capability) also have increased research motivation, and vice versa. At the same time, the research also affirms the role of perceived organizational support, which not only has a direct positive impact on research motivation, but also increases expectation, thus, indirectly influence research motivation. This suggests that the solution for managers who want to improve research motivation by having measures to increase the expectation for the lecturers through various forms of organizational support.

Using solid carriers impregnated with ammonium ionic liquids for platinum(IV) recovery from chloride solutions

Thuy Thi Le Bui,Ha Thi Ngoc Uong,Duy Khac Nguyen,Dung Thi Kim Hoang,Giang Vo-Thanh 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.12

Platinum(IV) was extracted from chloride solution using kerosene solution of trioctyl ammonium chloride, methyltrioctylammonium chloride, and tetraoctyl ammonium chloride ionic liquids as solvents in high yields. To increase the Pt(IV) recovery and heterogenize the process for easy handling at industrial scale, these three ionic liquids were directly impregnated on some solid carriers, such as silica gel-60, silica gel-100, Amberlite XAD-7 ion-exchange resin, and Amberlite XAD-7 ion-exchange resin to form sorbents in nature of supported ionic liquid phase. The influence of some factors, such as ionic liquid and solid carrier structure, IL/Pt molar ratio, and ionic liquid loading as well as sorption isotherms, was investigated. The stripping and desorption of Pt(IV) using different eluents and reusability of ionic liquids and supported ionic liquid phases were also evaluated.

Determinants Influencing Tax Compliance: The Case of Vietnam

NGUYEN, Thi Thuy Du'o'ng,PHAM, Thi My Linh,LE, Thanh Tam,TRUONG, Thi Hoai Linh,TRAN, Manh Dung Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.2

The purpose of this paper is to ascertain the key factors affecting tax compliance among Vietnamese firms in Vietnam. We employ both qualitative and quantitative research methods. Qualitative research has been carried out through focus group discussions with ten chief accountants and tax officers. Quantitative research has been conducted through interviews with 200 firms (chief accountants or financial directors) in Vietnam. Analysis of the model includes the following stages: (i) Cronbach's test for reliability of the scale, (ii) exploratory factor analysis (EFA), (iii) confirmatory factor analysis (CFA), and (iv) structural equation model (SEM). The results of the research show that voluntary tax compliance is directly affected by the three factors of audit probability, corporate reputation and business ownership. The probability of audit and severity of sanctions have the strongest impact on tax compliance. Therefore, the tax authorities need to strengthen the inspection of tax declarations, tax payments and tax refunds of firms. The paper confirms that enforced tax compliance is directly affected by the three factors of audit probability, sanction severity and social norms. Voluntary compliance and compulsory compliance have an effect on tax compliance, though voluntary compliance has a more powerful impact.

Risk Preferences and the Determinants of Fann Decision on Sustainable Land Management Adoption : 지속가능한 토지관리 (SLM) 채택에 있어서의 농장결정에 대한 위험선호와 결정요인

응웬티투이덩(Nguyen Thi Thuy Dung),호응옥끄엉(Ho Ngoc Cuong),응웬반흐우(Nguyen Van Huu) 영남대학교 박정희새마을연구원 2021 새마을학연구 Vol.6 No.2

이 연구에서는 지속가능한 토지관리(SLM))의 위험선호에 관한 기존의 연구들을 통해 SLM의 적용시 농부들의 의사결정에 영향을 미치는 결정요인을 찾고자 하였다. 선호요인은 SLM에 결정적인 영향을 미치는 요인으로 본 연구에서는 54개의 기존 연구를 통해 SLM의 구성요소, SLM의 채택에 미치는 위험선호 개념을 분석하였다. 상당수의 연구에서 SLM 채택의 중요한 측면으로서 농민의 사회-인구학적 특성, 농장 관련 특성, 농장 관리 관행 및 제도적 특성과 같은 가구 특성에 초점을 맞추고 있다는 것을 알 수 있었다. 반면, SLM을 채택하는데 필수요인인 위험 선호도를 논의한 연구는 거의 찾을 수 없었다. 이는 기존의 연구에서는 위험선호 요인에 대한 고려가 간과된 것을 의미한며, 나아가 농가의 행동을 이해하기 위해서는 SLM 도입에 관한 연구에 위험선호 요인이 포함될 필요가 있음을 의미한다. 본 연구에서는 SLM 관행의 기술 채택 및 적용 비율을 증가시킴으로, 위험에 덜 노출되는 방안의 모색으로 보험, 보조금, 작물 다양화, 농장 소득 증대, 농장 외 활동 생산, 효과적인 기술 촉진, 계약 농업, 더 나은 양질의 교육 및 자문 서비스에 대한 접근과 같은 정책적 시사점을 제시하고자 한다. The study aims to review existing literature and studies on risk preferences of Sustainable Land Management (hereinafter SLM). In addition, this paper explores the determinants that affect farmers decisions on the implementation of SLM. The risk preference is a decisive influencing element of the SLM. By reviewing 54 research studies, the paper has synthesized the concepts of risk preferences, SLM and components, and risk preferences that influence the adoption of SLM through systematic and integrative review methodologies. Many studies have examined the elements of SLM and risk preferences that affect the adoption of SLM. Almost all studies focused solely on household characteristics such as the socio-demographic characteristics of farmers, farm-related features, farm management practices, and institutional characteristics as the critical aspects of SLM adoption. In contrast, few studies discussed risk preferences as the essential part of SLM adoption. The result indicated that risk preferences were omitted, and we suggest that the risk preferences should be added to the SLM adoption studies to understand farm household behavior. Our paper seeks to reduce the risk exposure by increasing the rate of technology adoption and application of SLM practices.

Determinants Influencing Entrepreneurial Intention among Undergraduates in Universities of Vietnam

BUI, Thi Hong Viet,NGUYEN, Thi Le Thuy,TRAN, Manh Dung,NGUYEN, Thi Anh Thu Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.7

The paper aims to identify the determinants that influence entrepreneurial intention among National Economics University graduates. For the sample size, we conducted a questionnaire survey of 250 full-time third-year undergraduates at the National Economics University, with convenience sampling technique. Of those 250 undergraduates, 150 were Business Administration students and 100 Economy Management students. After eliminating invalid responses due to lack of information or low quality information, 215 responses were used (93.07% of respondents) for data analysis. The results show that the factor "Perceived desirability" has the strongest impact on the intention to start a business. It is followed by the factor "Perceived feasibility" in which the "ability to search and plan for start-up" has a stronger influence on undergraduates' entrepreneurial intention than the "leadership and ability to overcome adversity". The hypothesis of a positive relationship between undergraduates' propensity to act and their intention to start a business is also supported in this study. Based on the results, we suggest some recommendations for the university and State management agencies to nurture and develop entrepreneurial intention of undergraduates, forming the young generation of potential entrepreneurs to contribute to the development of emerging countries such as Vietnam, the case study.

Management of Fresh Tea Collection at Tea Manufacturing Companies in Phu Tho Province, Vietnam

응웬 티 투이 중(Nguyen Thi Thuy Dung),김기수(Kim Kisu) 영남대학교 박정희새마을연구원 2017 새마을학연구 Vol.2 No.2

오늘날 베트남에서 생차는 농촌의 빈곤극복과 농가소득 증대에 기여하는 중요한 작물이다. 특히 푸토지방은 베트남에서 가장 많은 생차 수확량을 가진 지방들 가운데 하나이다. 그러나 차 생산으로부터 나오는 소득은 아직 낮은 편이다. 주요 원인들 가운데 하나는 차 원료 관리에 있다. 이 지방에서의 차 생산은 농장 노동자, 협동조합 농부, 개인 농부 등 다양한 형태의 농부를 포함하여 차 재배자와 차 원료 생산자들의 다양성으로 인하여 그 구조가 상당히 복잡하다. 일부 차 가공기업 경영자들은 적절한 품질관리과정 없이 생차 수집자들로부터 생차를 구매하고 있기 때문에 차 원료에 대한 인증절차도 부실한 실정이다. 차 생산계획 또한 차 재배로부터 나오는 실제 수확량을 제대로 반영하지 못하고 있다. 본 연구는 베트남 푸토지방의 차 생산 공장들에서의 생차 수집관리 현황을 조사하고, 차 원료 수집관리의 중요성 특히 차 원료조달 관리에서 차 생산기업과 차 재배 농부들 사이의 협력의 중요성을 조사 및 분석한다. 그리고 연구결과를 기초로 차 생산에서 보다 효과적인 생차수집 관리를 위한 정책적 시사점을 제안한다. 연구결과 평균소득 면에서 협동조합 농부와 다른 형태의 농부들 사이에 통계적으로 유의한 차이가 확인되었다. 농부들의 차 생산기업과의 협력의도를 이해하기 위해 Binary logistic모델을 사용하였다. 본 연구에서는 또한 농부의 연령, 차 생산지와 재배지와의 거리는 협력의도에 정의 영향을 미치는 반면 월 농가소득은 부의 영향을 미치는 것으로 나타났다. 마지막으로 본 연구에서는 이와 같은 분석을 기반으로 고품질의 차 생산과 식품안전 수준의 유지를 위해 다음과 같은 차 생산과정에 대한 보다 과학적인 관리를 제안한다: 신품종 차 개발; 차 수확과정의 개선, 차 생산기업들의 경쟁력 강화를 위해 납품되는 차 원료 양의 확보 등. In Vietnam nowadays, fresh tea has really become one of major trees for poverty alleviation and livelihood improvement for many households. Especially Phu Tho is one of the provinces having the largest and highest yield of fresh tea in Vietnam. However, the income from tea production is so low. One of the main reasons is due to the ineffectiveness of fresh tea materials’ management. The production of tea in the province is rather complex due to the diversity of tea cultivators and raw tea material producers, including farm workers, cooperative farmers and other farmers’ groups. The managers of some factories do not pay enough attention to certify tea materials due to purchasing fresh tea material from the traders or collectors without input quality control. Moreover, the production plan did not reflect the actual yield of the tea plantation. The conflicts for buying raw materials and selling products have occurred frequently in recent years. This research examined “Management of fresh tea collection at a tea manufacturing company in Phu Tho Province, Vietnam” and has established the importance of management of tea material collection at tea companies now, especially, the cooperation between enterprises and tea farmers in the management of procurement. The output of one-way ANOVA indicates that average income of farm workers is different from cooperative farmers and other farmer groups. Besides, the binary logistic model could provide a more insightful understanding on the farmers’ willingness to participate in the cooperation with tea companies. The thesis also found out that age, the distance from household’s tea plots to collection area and the production capital of households have positive effects on the interest of the cooperation, while the household income per month negatively impacted on the desire to join the cooperation with tea manufacturers. The study also suggests applications of more scientific management to guarantee high quality and to retain standard tea levels that ensure food safety, such as; developing the structure of new varieties; improving the harvest process and ensuring the quantity supplied is constant in order to strengthen tea production enterprises.

Synthesis and Properties of Magnetic-Semiconductor Fe₃O₄/TiO₂ Heterostructure Nanocomposites for Applications in Wastewater Treatment

Tien-Dung Chu,Thi-Thuy-Phuong Doan,Duy-Truong Quach,Xuan-Tuyen Nguyen,Tuan-Son Nguyen,Duc-Thang Pham,Dong-Hyun Kim 한국자기학회 2020 Journal of Magnetics Vol.25 No.1

In this research, a simple method has been presented to synthesize the magnetic - semiconductor Fe₃O₄/TiO₂ heterostructure nanocomposites via three steps: firstly, synthesis of Fe₃O₄ nanoparticles by co-precipitation method; thereafter, formation of Fe₃O₄/TiO₂ composites by sol-gel method; finally, annealing to form Fe₃O₄/TiO₂ anatase (denoted as Fe₃O₄/TiO₂-A) and Fe₃O₄/TiO₂ rutile (denoted as Fe₃O₄/TiO₂-R) heterostructure nanocomposites, respectively. The results of X-ray diffraction, transmission electron microscopy, and energy-dispersive X-ray spectroscopy show that the Fe₃O₄/TiO₂-A and Fe₃O₄/TiO₂-R heterostructure nanocomposite samples contain both magnetite (Fe₃O₄) and semiconductor TiO₂ (anatase or rutile phase, respectively). The asprepared nanocomposite samples exhibit superparamagnetic properties at room temperature with high saturation magnetization (Ms) above 19.5 emu/g at the applied magnetic field of 11 kOe. Moreover, the Fe₃O₄/TiO₂-A and Fe₃O₄/TiO₂-R heterostructure nanocomposites with a low band gap energy of 2.89 eV and 2.81 eV, respectively, are promising to enhance the performance of photocatalytic activities in the visible light region for application in wastewater treatment.

Social Capital and Migration: A Case Study of Rural Vietnam

Hong Thu NGUYEN,My Kim LE,Thi Thuy Dung NGUYEN,Vu Phuong Linh DAO,Ngoc Tien NGUYEN 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.1

To investigate the short-run effects of social capital on migration decisions of individuals in the rural areas of Vietnam, we conducted dataset mining and performed regression model analysis in the form of panel data. As control variables, we employed the variable of social capital, which is measured by an individual’s network, as well as demographic characteristics of individuals and households. We discovered that when a household is in financial distress, social networks such as linkages or asking for aid from others often enhance individual capacity. Individuals with a large social network outside of their immediate area are more inclined to relocate to the location where their connectors live. Individual participation and degree of participation in the organizational community, on the other hand, have little bearing on the likelihood of migration. In addition, this research examines theories and empirical research on the relationship between social capital and migration. Based on our research findings, we have recommended some measures to boost the efficiency of social capital and migration in rural areas of Vietnam through local government solutions.

Microscopic origin of asymmetric magnetization reversal of Co/Pt multilayers with perpendicular magnetic anisotropy

Duy-Truong Quach,Tien-Dung Chu,Tuan-Son Nguyen,Thi-Thuy-Phuong Doan,Xuan-Tuyen Nguyen,이경민,정종렬,김남동,신현준,김동현 한국물리학회 2020 Current Applied Physics Vol.20 No.9

We have comprehensively investigated asymmetric magnetization reversal behaviors of (x-Å Co/7.7 Å Pt)5 multilayers (x = 3.1 and 4.7) with perpendicular magnetic anisotropy. Our direct observation of magnetic domain structures by means of magneto-optical microscopy reveals that the asymmetry arises both from nucleation and wall-motion processes. An asymmetric nucleation behavior is observed, which could be originated from the preexisting non-reversed domains which might have a reproducible or random spatial distribution, controllable by tuning the field profile. An asymmetric wall-motion behavior stemming from asymmetric stripe domain evolution is also observed.

The role of rapid tissue expansion in separating xipho-omphalopagus conjoined twins in Vietnam

Tran, Thiet Son,Pham, Thi Viet Dung,Ta, Thi Hong Thuy,Vu, Duy Kien,Nguyen, Thanh Liem Korean Society of Plastic and Reconstructive Surge 2021 Archives of Plastic Surgery Vol.48 No.4

Conjoined twins are rare, and each set of conjoined twins has a unique conjoined anatomy. It is necessary to perform separation to increase the chance of patient survival. Tissue expansion is an advanced technique for providing sufficient soft tissue and skin for wound closure. We report the successful application of rapid tissue expansion in 10-month-old xipho-omphalopagus conjoined twins in Vietnam. A tissue expander was placed on the anterior body between the sternum and umbilicus with a baseline of 70 mL sterile saline (0.9% NaCl). The first injection into the tissue expander began on the 6th day after expander insertion, and injections continued every 2 days with approximately 30-70 mL per injection according to the expansion of the skin. The expander reached 335 mL after six injections and within 10 days. In order to prepare for surgical separation, expansion was completed on the 15th day after insertion. The expanded skin area was estimated to be 180 cm², which was sufficient to cover both patients' skin deficiencies. The twins presented for surgical separation 6 days following the completion of tissue expansion. Both babies were discharged in good health 1 month after separation.