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Van Nam MAI,Quoc Nghi NGUYEN,Du Ha Long NGUYEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.8
Service failures are fairly common these days, and recovering from them is difficult. If service failures are not addressed quickly, the service provider may lose revenue and customers. A good service recovery strategy will positively impact the business results of the service provider. The study aims to demonstrate the impact of service recovery on the satisfaction and word of mouth of international visitors towards homestays in the Mekong Delta, Vietnam. The research data was collected from 320 international visitors who have used services at homestays and experienced service failures in the Mekong Delta, Vietnam. Structural equation modeling was applied to analyze the data. The result shows that 3 dimensions constitute service recovery which are distributive justice, interactional justice, and procedural justice. Most importantly, the study has proved the positive impact of service recovery on both satisfaction and word of mouth of overseas tourists towards homestays in the Mekong Delta, Vietnam. The results have stressed the importance of service recovery to tourists’ perceptions of service quality and service image. In addition to this, the study suggests that homestay owners should develop risk handling and risk prevention plans for their services.
Quang Vang DANG(Quang Vang DANG ),Viet Thanh Truc TRAN(Viet Thanh Truc TRAN ),Hieu PHAM(Hieu PHAM ),Van Nam MAI(Van Nam MAI ),Quoc Duy VUONG(Quoc Duy VUONG ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2
This paper investigates the determinants of credit accessibility and the effect of credit on the income of farm households borrowing from Vietnam Bank for Agriculture and Rural Development, Giong Rieng District Branch, Kien Giang Province. Based on the primary data of 200 farming households who are the customer of the bank, the study applied the Probit regression model to examine determinant factors of credit accessibility of farm households and employed the Propensity score matching method to investigate the impact of credit on households’ income. The findings of the Probit regression shown that three independent variables that significantly influence the access to credit of households are household size, income source, and farm size. Besides that, the Propensity score matching method results showed a difference of 23.799 million VND/year between the income of borrowing households and that of non-borrowing households at the significance level of 1%. The difference in the imcome from the interval and central matching methods are VND 24.700 million VND/year and VND 24.633 million VND/year, respectively. Given empirical findings suggetsted that several recommendations to increase the credit accessibility of farm households, thereby creating favorable conditions for improving their income.
Two New C-Glucosyl Benzoic Acids and Flavonoids from Mallotus nanus and Their Antioxidant Activity
Phan Van Kiem,Nguyen Thi Mai,Chau Van Minh,Nguyen Huu Khoi,Nguyen Hai Dang,Nguyen Phuong Thao,Nguyen Xuan Cuong,Nguyen Hoai Nam,Nguyen Xuan Nhiem,Yvan Vander Heyden,Joëlle Quetin-Leclercq,김교남,장해동,김영호 대한약학회 2010 Archives of Pharmacal Research Vol.33 No.2
Two new 2-C-β-D-glucopyranosyl benzoic acid derivatives named mallonanosides A (1) and B (2) were isolated from the methanolic extract of the leaves of Mallotus nanus along with five known flavonoids, kaempferin (3), juglanin (4), quercitrin (5), myricitrin (6), and rhoifolin (7). Their structures were established on the basis of spectral and chemical evidence. Their antioxidant activities were shown to depend on the number of hydroxyl groups, and the location and species of sugar moiety.
Quoc Nghi NGUYEN,Van Ba HUYNH,Van Nam MAI,Thi Hong Loc HOANG 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.12
In the context of economic integration and fierce competition, organizations are very concerned about customer orientation so as to build close relationships and ensure customer satisfaction and improve customer loyalty. In company strategy, customer relationship orientation is critical. Customer satisfaction and loyalty will improve if employees perform well in the customer-oriented process. The study’s purpose is to examine the links between doctors’ job happiness, customer orientation, customer satisfaction, and customer loyalty in international hospitals in Vietnam. In international hospitals, data was collected from 204 clinicians and 408 patients. By applying structural equation modeling. The study found that doctors’ job satisfaction had a significant impact on customer orientation and satisfaction in international hospitals. Customer satisfaction may be improved with a good customer orientation. The doctors’ job satisfaction and effective customer orientation improve customer satisfaction and loyalty towards international hospitals in Vietnam, thanks to the impact of spreading emotions. In particular, if doctors are satisfied with their jobs, it promotes customer satisfaction when using medical services at international hospitals. The study has proved the essential role of customer-oriented strategy and doctors’ job satisfaction in customer satisfaction and loyalty towards international hospitals.
Hien, Nguyen Khoa,Nhan, Doan Thanh,Kim, Won Young,Van Bay, Mai,Nam, Pham Cam,Van, Dang Ung,Lim, In-Taek,Kim, Jong Seung,Quang, Duong Tuan Elsevier 2018 Dyes and pigments Vol.152 No.-
<P><B>Abstract</B></P> <P>A coumarin-based fluorescent sensor (7-Acryloxy-4-methylcoumarin, <B>AMC</B>) for biothiols has been studied by a combination of quantum chemical calculation and experimental investigation. The <B>AMC</B> selectively reacts with mercapto biomolecules via Michael addition, which can be served as a ratiometric fluorescent sensor for thiol-containing biomolecules. The <B>AMC</B> sensor shows a selectivity towards biothiols with sensitivity in the order of cysteine > glutathione > homocysteine. Moreover, the <B>AMC</B> sensor can detect the cysteine concentration within the intracellular level. The results of the theoretical investigations on the electron excited states show that the lack of overlapping between MOs in transitions of the lower-lying singlet electron excited states and the small energy gap between electron excited states are the cause of fluorescence from the higher-lying singlet electron excited states, as an exception from Kasha's rule. The fluorescence from the higher-lying singlet electron excited states leads to marked fluorescence enhancement at long wavelength in the products of addition reaction of biothiols to <B>AMC</B> sensor.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A coumarin-derived ratiometric fluorescent sensor for the determination of biothiols via Michael addition was synthesized. </LI> <LI> Absorption and fluorescence characteristics were clarified on the basis of electronically excited states optimized geometries. </LI> <LI> The lack of overlap between MOs, and the small energy gap between electronically excited states lead to an exception of Kasha's rule. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
The Impact of Access to Cooperatives on Households’ Income: An Empirical Study in Vietnam
Quoc Duy VUONG,Viet Thanh Truc TRAN,Quang Vang DANG,Van Nam MAI 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.12
If one is looking for an organization that will be responsive to community needs, stimulate economic growth, and raise people’s income, cooperatives should be an obvious choice (Calkins & Ngo, 2005; Larocque et al., 2002). This paper investigates whether the households’ income is affected by the access to cooperatives for the case of Phong Dien district, Can Tho city of Vietnam. Data used are directly collected from 250 households that are both participating (120 observations) and not participating in the cooperatives in Truong Long, Tan Thoi, Nhon Ai and Nhon Nghia communes. By using the Probit model, the findings show that there are three statistically significant factors affecting the ability of farm households to participate in the cooperatives at the 1 percent level including land area, distance to market center, and education level. In addition, the PSM model analysis suggests that the average income of cooperative members is significantly higher than that of non-members, about 40.880 million VND/year at the significance level of 1 percent. The empirical results imply that being a cooperative member is a significant contributory factor toward an increase in household income. Based on the research findings, several recommendations to improve the households’ income are proposed.
Do, Thi Huyen,Dao, Trong Khoa,Nguyen, Khanh Hoang Viet,Le, Ngoc Giang,Nguyen, Thi Mai Phuong,Le, Tung Lam,Phung, Thu Nguyet,Straalen, Nico M. van,Roelofs, Dick,Truong, Nam Hai Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.5
Objective: In a previous study, analysis of Illumina sequenced metagenomic DNA data of bacteria in Vietnamese goats' rumen showed a high diversity of putative lignocellulolytic genes. In this study, taxonomy speculation of microbial community and lignocellulolytic bacteria population in the rumen was conducted to elucidate a role of bacterial structure for effective degradation of plant materials. Methods: The metagenomic data had been subjected into Basic Local Alignment Search Tool (BLASTX) algorithm and the National Center for Biotechnology Information non-redundant sequence database. Here the BLASTX hits were further processed by the Metagenome Analyzer program to statistically analyze the abundance of taxa. Results: Microbial community in the rumen is defined by dominance of Bacteroidetes compared to Firmicutes. The ratio of Firmicutes versus Bacteroidetes was 0.36:1. An abundance of Synergistetes was uniquely identified in the goat microbiome may be formed by host genotype. With regard to bacterial lignocellulose degraders, the ratio of lignocellulolytic genes affiliated with Firmicutes compared to the genes linked to Bacteroidetes was 0.11:1, in which the genes encoding putative hemicellulases, carbohydrate esterases, polysaccharide lyases originated from Bacteroidetes were 14 to 20 times higher than from Firmicutes. Firmicutes seem to possess more cellulose hydrolysis capacity showing a Firmicutes/Bacteroidetes ratio of 0.35:1. Analysis of lignocellulolytic potential degraders shows that four species belonged to Bacteroidetes phylum, while two species belonged to Firmicutes phylum harbouring at least 12 different catalytic domains for all lignocellulose pretreatment, cellulose, as well as hemicellulose saccharification. Conclusion: Based on these findings, we speculate that increasing the members of Bacteroidetes to keep a low ratio of Firmicutes versus Bacteroidetes in goat rumen has resulted most likely in an increased lignocellulose digestion.