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Hoang,Phuong Dung 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-
Vietnamese consumers have increasingly concerned about CSR however the linkage between perceived CSR and customer behavior has not been adequately explained in Vietnam context. This paper aims at investigating how Vietnamese customers’ perception of CSR influences their loyalty to retailers as well as testing the mediating roles of relationship quality (customer satisfaction and trust) on such influence. The findings will provide valuable strategic implications for Vietnamese supermarkets in designing effective customer-retention programs. The results of this study are in line with previous researches that support the direct positive effect of perceived CSR on customer loyalty. Moreover, this study demonstrates the paths from perceived CSR on customer loyalty in Vietnam retailing context in which the mediating roles of customer trust and customer satisfaction are affirmed. The possible reason is that consumers associate good CSR with positive evaluation of the retailer’s trustworthiness as well as its products and services that enhance relationship quality and loyalty.
Debit Card Usage as a Rational Choice: The Moderating Effect of Cash Habit
Dung Phuong Hoang,Thong Huy Vu 중앙대학교 경제연구소 2020 Journal of Economic Development Vol.45 No.1
This research takes a new perspective in explaining the willingness to use debit cards in which the use of debit cards is treated as a rational choice over cash, its alternative means of payment. Upon the adaption of rational choice theory, this study comprehensively identifies the costs and benefits associated with debit card usage and tests the effects of these forces on debit cardholders’ willingness to use the card. Moreover, this study also investigates the influence of cash habit on the willingness to use debit cards. This research employed both the qualitative method with in-depth interview to develop hypotheses and measurement scales and quantitative survey on 376 Vietnamese debit cardholders to test the conceptual model. The findings indicate that the willingness to use debit cards can be significantly encouraged by enhancing perceived benefits and reducing perceived adaptation costs associated with debit card usage. Moreover, although the habit of using cash does not directly affect willingness to use debit cards, it significantly weakens the positive impacts of perceived benefits and strengthens the negative impacts of perceived adaption costs on willingness to use debit cards.
Determinants Influencing Information Transparency in Vietnamese Commercial Banks
NGUYEN, Minh Phuong,NGUYEN, Thi Hong Hai,HOANG, Phuong Dung,TRAN, Manh Dung,PHAM, Quang Trung Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.12
Information transparency ensures that market players all have the opportunity to access the same information to come up with their assessment of the banks' financial situation, performance and risks to reach effective investment decisions. This research is conducted to investigate the levels of impact of determinants on information transparency by examining the case studies of Vietnamese commercial banks. This study combines both qualitative and quantitative research methods, based on interviews of 32 specialists in banking, accounting and auditing fields, which were conducted to explore determinants influencing information transparency and to develop measurement scales. Then, a survey of 160 managers of commercial banks, audit firms, and accounting managers of firms who frequently had transactions with banks was carried out to investigate the statistical significance of these determinants. The results show that, out of seven determinants that have significant impacts on the banks' information transparency, commitment from banks' senior management regarding transparency in information disclosure has the highest impact, followed by state governance, auditing, information infrastructure, credit rating agencies, personnel and bank performance. Accordingly, we provide some recommendations for improving information transparency in the Vietnamese banking industry context as a case study and in emerging countries context in general.
ON A NONLINEAR INTEGRODIFFERENTIAL EQUATION IN TWO VARIABLES WITH VALUES IN A GENERAL BANACH SPACE
Dung Huynh Thi Hoang,Ngoc Le Thi Phuong,Long Nguyen Thanh 경남대학교 수학교육과 2019 Nonlinear Functional Analysis and Applications Vol.24 No.2
The paper is devoted to the study of a nonlinear integrodifferential equation in two variables with values in a general Banach space. Applying the fixed point theorems together with the definition of a suitable Banach space and the establishment of appro- priate conditions for subsets to be relatively compact in this space, the existence and the compactness of the set of solutions are proved. Two illustrative examples are given.
Spectrum of Lysosomal Storage Disease Targeted for Newborn Screening in Vietnam
Dung, Vu Chi,Ngoc, Can Thi Bich,Khanh, Nguyen Ngoc,Mai, Do Thi Thanh,Thao, Bui Phuong,Mai, Tran Thi Chi,Ha, Nguyen Thu,Huong, Nguyen Thi Mai,Nam, Nguyen Hoang,Hai, Le Thanh,Tomatsu, Shunji,Yoo, Han-Wo Association for Research of MPS and Rare Diseases 2017 Journal of mucopolysaccharidosis and rare disease Vol.3 No.1
Tran, Dung Thi,Cho, Seungchan,Hoang, Phuong Mai,Kim, Jaedeok,Kil, Eui-Joon,Lee, Taek-Kyun,Rhee, Yong,Lee, Sukchan Springer-Verlag 2016 Plant molecular biology reporter Vol.34 No.1
<P>Chrysanthemum stunt viroid (CSVd), the smallest plant pathogen known to infect chrysanthemums, is a single-stranded circular RNA viroid that induces stunting that results in an overall height reduction of 30-50 % in mature plants. A catalytic single-chain variable antibody, 3D8 scFv, which exhibits intrinsic DNase and RNase activities, was expressed in chrysanthemums to generate transgenic plant resistance to CSVd infection. Moreover, a codon-optimized version of the 3D8 scFv gene for chrysanthemums was also transformed into plants; these codon-optimized transgenic chrysanthemums expressed twice as much 3D8 scFv and displayed 60 % more resistance to CSVd infection, compared with transgenic chrysanthemums harboring the original 3D8 scFv gene. CSVd challenge experiments with codon-optimized and original 3D8 scFv-transgenic chrysanthemums showed that CSVd in newly produced leaves of both codon-optimized and original 3D8 scFv-transgenic plants was not detected by RT-PCR. This is the first report describing the development of a CSVd-resistant chrysanthemum harboring a catalytic single-chain antibody, 3D8 scFv, which has intrinsic RNase activity.</P>
Ngo Manh Dung,Vo Hoang Duy,Nguyen Thanh Phuong,Sang Bong Kim,Myung Suck Oh 대한전기학회 2007 International Journal of Control, Automation, and Vol.5 No.3
In this paper, a nonlinear controller based on adaptive sliding-mode method which has a sliding surface vector including new boundizing function is proposed and applied to a two-wheeled welding mobile robot (WMR). This controller makes the welding point of WMR achieve tracking a reference point which is moving on a smooth curved welding path with a desired constant velocity. The mobile robot is considered in view of a kinematic model and a dynamic model in Cartesian coordinates. The proposed controller can overcome uncertainties and external disturbances by adaptive sliding-mode technique. To design the controller, the tracking error vector is defined, and then the sliding surface vector including new boundizing function and the adaptation laws are chosen to guarantee that the error vector converges to zero asymptotically. The stability of the dynamic system is shown through the Lyapunov method. In addition, a simple way of measuring the enol'S by potentiometers is introduced. The simulations and experimental results are shown to prove the effectiveness of the proposed controller.
Mechanism of Skin Pigmentation
Lam Do Phuong Uyen,Dung Hoang Nguyen,김은기 한국생물공학회 2008 Biotechnology and Bioprocess Engineering Vol.13 No.4
Melanin is a pigment that plays an important role in providing coloration and protecting human skin from the harmful effects of UV light radiation. Human skin color is determined by the type and amount of melanins that are synthesized and deposited within the melanosomes. In addition, the transfer of these specialized membrane-bound organelles from melanocytes to surrounding keratinocytes also plays a role in dictating human skin color. In order to investigate the principle features of skin pigmentation, the origin, function, and production ability of melanin should be highly understood in terms of biological and pathophysiological aspects. Furthermore, a deep understanding of melanin synthesis will also contribute to cosmetics and drugs development. In this review, the processes of melanin biosynthesis, such as survival, proliferation, and differentiation of melanin cells, as well as the biological regulation of human pigmentation were described.