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DO, Trang Huyen,LE, Huyen Mong,LUONG, Diem Thuy Thi,TRAN, Quanh Thi Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.10
The study investigates the relationship between broad-scope management accounting information usage, market orientation, and the firm performance. This study employs a survey data of 149 top-level and mid-level managers working in Vietnamese tourism enterprises. To analyze research data, we employ SmartPLS 3 software. The analytical process include measurement model evaluation (evaluate the scale's validity and reliability) and structural model evaluation (test research hypotheses). The results reveal that broad-scope management accounting information usage has a positive direct effect on market orientation dimensions (include information generation, information dissemination, and responsiveness). Then, market orientation dimensions also have positive direct effects on the performance of Vietnamese tourism firms, excluding information dissemination. Moreover, this study also reveals that the market orientation dimensions mediate the relationship between broad-scope management accounting information usage and firm performance. The findings of this study suggest that tourism firms should pay more attention to the use of management accounting information in decision-making. With the increasingly fierce competition of the tourism firms today, capturing and meeting the needs of the market is a prerequisite to help firms enhance their competitiveness and improve their performance. To do that, Vietnamese tourism firms need to consider pursuing market orientation and enhancing broad-scope management accounting information usage.
LE, Hoang Ba Huyen,NGO, Chi Thanh,TRINH, Thi Thu Huyen,NGUYEN, Thi Thu Phuong Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.2
The article aims to identify the main factors affecting customers' decision to use mobile banking service in Vietnam, a case study in Thanh Hoa province. Based on theoretical frameworks of the Technology Acceptance Model (TAM) and the Unified Theory of Acceptance and Use of Technology (UTAUT), the study has been conducted with 370 questionnaires to consumers who have not yet used and are currently using mobile banking in Thanh Hoa province. The research results indicates that several factors have been evaluated to be more important than others, of which, the social influence is the strongest, the second is the compatibility and some others factors such as perceived ease of use, perceived trust, etc., all affecting the intention to use mobile banking in Thanh Hoa. Based on these important results, the article propose a number of recommendations: (i) Exploiting the advantages of social influence on the increase of intention to use; (ii) Increasing compatibility and minimizing costs for customers when they use Mobile Banking; (iii) Developing a strategy to increase the users' perceived ease of using banking services; (iv) Issuing a policy on increasing the security of Mobile Banking system to meet customers' needs; and (v) Developing an individual customer management system to improve service quality.
Crystallographic snapshots of active site metal shift in E. coli fructose 1,6-bisphosphate aldolase
( Huyen-thi Tran ),( Seon-hwa Lee ),( Thien-hoang Ho ),( Seung-hye Hong ),( Kim-hung Huynh ),( Yeh-jin Ahn ),( Deok-kun Oh ),( Lin-woo Kang ) 생화학분자생물학회(구 한국생화학분자생물학회) 2016 BMB Reports Vol.49 No.12
Fructose 1,6-bisphosphate aldolase (FBA) is important for both glycolysis and gluconeogenesis in life. Class II (zinc dependent) FBA is an attractive target for the development of antibiotics against protozoa, bacteria, and fungi, and is also widely used to produce various high-value stereoisomers in the chemical and pharmaceutical industry. In this study, the crystal structures of class II Escherichia coli FBA (EcFBA) were determined from four different crystals, with resolutions between 1.8 A and 2.0 A. Native EcFBA structures showed two separate sites of Zn1 (interior position) and Zn2 (active site surface position) for Zn<sup>2+</sup> ion. Citrate and TRIS bound EcFBA structures showed Zn<sup>2+</sup> position exclusively at Zn2. Crystallo-graphic snapshots of EcFBA structures with and without ligand binding proposed the rationale of metal shift at the active site, which might be a hidden mechanism to keep the trace metal cofactor Zn<sup>2+</sup> within EcFBA without losing it. [BMB Reports 2016; 49(12): 681-686]
HUYEN, Le Thanh Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.8
For each country, the growth of the country is significantly associated with the growth of the manufacturing industry. Especially in the early stages of development, the manufacturing industry has greatly played a great role in creating great added value for society and economic development in that country. Starting from a country with a weak manufacturing background, Vietnam is gradually opening up and integrating into the global economy, which has brought many opportunities for manufacturing enterprises in particular and the enterprise community in general, making Vietnam one of the countries with large production activities in Southeast Asia and Asia. The study evaluates the factors affecting the financial performance of manufacturing enterprises through a case study in Hanoi, Vietnam. Using a survey sample of 235 enterprises operating in production and using quantitative analysis methods, the research results show that: Enterprises with high governance quality are enterprises with high economic efficiency or enterprises with low management capacity have low business efficiency. Moreover, large-scale enterprises often have many advantages in seeking profits and improving business efficiency. Finally, the study has some recommendations to improve corporate governance and growth, create a stronger business community and contribute more to Vietnam's economic development.
고도산화공정 처리가 페니실린의 생독성, 생분해도 및 생물학적 분해에 미치는 영향
Huyen Trang Luu,Dang Nhat Minh,이기세 한국공업화학회 2018 공업화학 Vol.29 No.6
페니실린(PEN) 항생제의 분해를 위하여 오존, 과산화수소, 자외선으로 구성된 고도산화공정(AOP)을 적용하였다. 항생물질 분해효율은 흡광도(ABS) 및 총유기탄소(TOC) 분석으로 평가하였다. O3/H2O2/UV와 O3/UV 조합이 ABS (9 min 동안 100%) 및 TOC 감소(60 min 동안 70%)에 가장 효과가 좋았으나 사용한 실험조건에서 항생제의 무기질화 및 독성제거는 완전하지 않았다. 항생물질에 의한 생독성은 Escherichia coli 민감도 및 Vibrio fischeri 생체형광 활성평가를이용하였으며 O3/UV에 의해 민감도는 9 min 동안 100% 감소, O3/H2O2/UV에 의한 생체형광에 대한 독성은 60 min 동안 57% 감소하였다. 생물학적 분해를 위한 AOP 조합으로 O3/UV 조합을 선정하였으며 BOD5/COD 비율로 생분해도의 개선 여부를 간접 측정한 결과 O3/UV로 30 min 처리함으로 BOD5/COD 비율이 약 4배 증가하였다. 페니실린 20 mg/L를 포함하는 인공폐수에 대하여 AOP 처리 후 Pseudomonas putida를 이용하여 호기적 생물학적 분해를 진행한결과, O3/UV 전처리한 경우 페니실린의 완전 무기질화가 가능하였으며 전처리하지 않은 경우에 비하여 분해속도가55% 증진되었다. 결론으로, 호기성 생물학적 처리를 위한 AOP 전처리로써 O3/UV 조합이 추천되며 페니실린의 완전분해를 촉진할 수 있다.
Factors Affecting Electronic Tax Compliance of Small and Medium Enterprises in Vietnam
Huyen Thi Dieu LE,Men Thi BUI,Giang Thi Cam NGUYEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.1
In Vietnam, tax compliance has become an important goal in the tax reform strategy. In the context of technology 4.0, the application of the electronic tax system is of great significance to small- and medium-sized enterprises (SMEs). The paper explores factors influencing electronic tax compliance of SMEs in Vietnam. Data from 402 SMEs, who are business taxpayers, was selected through a researcherdesigned questionnaire survey method. The results indicate that four groups of factors have significant effects on electronic tax compliance among Vietnamese SMEs. These groups include Taxpayer Awareness (TA), Perceived Ease of use (PTE), Vietnamese tax administration (VTA,) and Efficiency of Vietnamese tax policy (VTP). The factor analysis was adopted; Cronbach’s alpha coefficients were calculated, exploratory factor analysis (EFA) was used. The findings found that among these four groups, the most influencing factor is taxpayer awareness. It is suggested that the Vietnamese government should pay attention to promote and support SMEs to raise full awareness of tax obligations. This could be done through various methods such as conducting workshops for updating tax policies and short courses to business taxpayers of electronic tax compliance. The study is expected to provide some important implications for policy-makers and practitioners in tax policy reform in Vietnam.
Effects of Glycerol and Shikimic Acid on Rapamycin Production in Streptomyces rapamycinicus
( Huyen Thi Huong La ),( Thao Kim Nu Nguyen ),( Hang Thuy Dinh ),( Quyen Minh Huynh Nguyen ),( Minh Hong Nguyen ) 한국미생물 · 생명공학회 2020 한국미생물·생명공학회지 Vol.48 No.3
Rapamycin, derived from Streptomyces rapamycinicus, is an important bioactive compound having a therapeutic value in managing Parkinson’s disease, rheumatoid arthritis, cancer, and AIDS. Because of its pharmaceutical activity, studies over the past decade have focused on the biosynthesis of rapamycin to enhance its yield. In this study, the effect of rapG on rapamycin production was investigated. The rapG expression vector was constructed by utilizing the integration vector pSET152 under the control of the erythromycin resistance gene (ermE*), a strong constitutive promoter. The rapamycin yield of wild type (WT) and WT/ rapG overexpression mutant strains, under fermentation conditions, was analyzed by high-performance liquid chromatography (HPLC). Our results revealed that overexpression of rapG increased rapamycin production by approximately 4.9-fold (211.4 mg/l) in MD1 containing 15 g/l of glycerol, compared to that of the WT strain. It was also found that Illicium verum powder (10 g/l), containing shikimic acid, enhanced rapamycin production in both WT and WT/rapG strains. Moreover, the amount of rapamycin produced by the WT/rapG strain was statistically higher than that produced by the WT strain. In conclusion, the addition 15 g/l glycerol and 15 g/l I. verum powder produced the optimal conditions for rapamycin production by WT and WT/rapG strains.