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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.
Lottery Mindsets and the Cross Sectional Returns in the Vietnam Stock Market
Viet Anh Hoang(Viet Anh Hoang Viet Anh Hoang),Ba Thanh Truong(Ba Thanh Truong Ba Thanh Truong),Duong Viet Anh(Duong Viet Anh Duong Viet Anh),Hoang Van Hai(Hoang Van Hai Hoang Van Hai) People & Global Business Association 2024 Global Business and Finance Review Vol.29 No.4
Purpose: In this study, we evaluate the relationship between lottery-type stocks and future return in the Vietnam stock market from July 2010 to June 2023. Design/methodology/approach: We employ portfolio-level analysis and firm-level cross-sectional regressions fol-lowing Bali et al. (2011). Findings: We find that the minimum daily return (MINRET) is negative and statistically significant in the cross-sec-tional pricing of stocks. The minimum daily return during the previous month and anticipated stock returns are negatively and significantly correlated, according to portfolio-level analyses and firm-level cross-sectional regressions. However, the maximum daily return (MAXRET) effect is not priced in the Vietnam stock market. These findings hold up under controls for liquidity, skewness, momentum, short-term reversals, size, and book-to-market. Research limitations/implications: This study provides an understanding of the lottery phenomenon in the empiri-cal dimension, especially in the emerging stock market. Originality/value: Importantly, our empirical findings that the MINRET, not MAXRET, effect is strongly exhibited as a lottery-type stock's behavior in the Vietnam market.
Hoang Linh DANG(Hoang Linh DANG),Nguyen Van BAO(Nguyen Van BAO),Yooncheong CHO(Yooncheong CHO) 한국유통과학회 2023 Asian Journal of Business Environment (AJBE) Vol.13 No.1
Purpose: The purpose of this research paper is to explore what factors that affect customer purchase decisions in the online environment, particularly after the COVID-19 pandemic in the case of Vietnamese customers. Research Design, Data and Methodology: To clarify which factor has the most significant impacts on online purchasing decision-making process, this study proposed a research model including factors such as customer trust, proposensity to trust, system assurance, the quality of website design, attitude, and customer satisfaction. This study collected the data via online survey. Data analysis was conducted by AMOS 25.0 using the Structural Equation Modeling (SEM) method. Result: The results of this study shows that the purchase decisions were positively affected by customers’ attitude, satisfaction, trust, and the quality of websites design. Additionally, factors such as perceived size and reputation and system assurance, have impacts on buyers’ trust, while the propensity to trust has no significant impact. Conclusion: This study provides managerial implications. The results provide which factors should be improved to foster trust, attitude, customer satisfaction, and purchase decision in the online environment. The results also provide managerial implication on marketing strategies how to enhance better relationships with customers and to consider environmental issues in the era of post COVID-19.
Hoang Nguyen(Hoang Nguyen ),Tu Phan Thanh(Tu Phan Thanh ),Hee-Cheol Moon(Hee-Cheol Moon),Binh Do(Binh Do ) The International Academy of Global Business and T 2023 The International Academy of Global Business and T Vol.19 No.3
Purpose - Given the significance of concerns raised about the global shift toward protectionism under trade policy uncertainty context, and echoed by requests to contribute to issues that concern a wider variety of stakeholders, this study aims to review new trade protection measures in response to the pandemic crisis and their effects on export performance from an emerging country’s exporters. Design/Methodology/Approach - Research data were gathered by surveying 613 export managers of different types of exporters in Vietnam from a list of exporters provided by Ministry of Industry and Trade, and then applied a regression model for analysis. Findings - The study demonstrated a negative relationship between firm export performance and six trade protectionism measures, including industrial subsidies, public-procurement restrictions, FDI restrictions, standards protectionism, green protectionism, and regional integration. Only restrictions on migrant workers had no appreciable impact on firm export performance. Additionally, only employee number, out of the three control factors, significantly and positively affected how well firms succeed in exporting. Research Implications - The study’s findings have significant ramifications and contributions to theory and practice in international trade for an emerging country to overcome new trade protectionism measures. To support firms in expanding export markets, the government of an emerging country should concentrate on establishing and developing policies to support exporters, especially small and medium enterprises. Firms should pursue a sustainable export strategy in light of the emergence of new trade protectionism in significant import markets.
A New Bearing-Only Navigation Law
Minh Hoang Trinh,Viet Hoang Pham,Phuong Huu Hoang,Jin-Hee Son,Hyo-Sung Ahn 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
This paper proposes a new bearing-only control law which can be used for autonomous navigation task. We firstly compare the proposed control law with a commonly used control law in the literature when the agent navigates with only one beacon. Second, we prove that if there are two or more beacons, the agent can almost globally asymptotically reaches the desired position under the proposed control law. Third, the proposed control law is then applied to a cooperative bearing-only navigation problem. Simulation result is given to support the mathematical analysis.
Pham Hoang Hien(Pham Hoang Hien ),Tran Thanh Tuan(Tran Thanh Tuan ) People&Global Business Association 2023 Global Business and Finance Review Vol.28 No.3
Purpose: This research investigates the role of employee trust and job satisfaction in the relationship between organizational culture and employee loyalty. Design/methodology/approach: The study was conducted among 355 healthcare professionals working in a private healthcare system in southern cities of Vietnam, including doctors, nurses, and other medical staff. The research method employed was partial least squared structure equation modeling (PLS-SEM) with SmartPLS software for data analysis. Findings: The findings indicate that organizational culture has a direct positive impact on employee loyalty and also affects employee trust and job satisfaction positively. Furthermore, employee trust and job satisfaction act as intermediaries and positively influence employee loyalty toward the organization. Research limitations/implications: The research acknowledges the limitation of the limited sample size and encourages further exploration of these relationships in other contexts. In addition, this study provides valuable insights for the management board of private healthcare organizations in southern cities of Vietnam on how to improve employee loyalty by cultivating a positive organizational culture, promoting employee trust, and enhancing job satisfaction. Originality/value: Overall, this research contributes significantly to the existing literature by examining the interplay between employee trust, organizational culture, job satisfaction, and employee loyalty.
Khac Lich Hoang(Khac Lich Hoang ),Duc Bao Nguyen(Duc Bao Nguyen ) 세종대학교 경제통합연구소 2022 Journal of Economic Integration Vol.37 No.4
This study examines whether the length of the implementation periods of regional trade agreement (RTA) in relation to trade liberalization schedules and the level of development of member countries affect members' trade. The analysis finds that RTAs formed by partner countries with a similar level of economic development lead to increased trade among members than among North-South RTAs during a shorter transition period of trade and tariff liberalization, regardless of the degree of integration being shallow or deep. The average long-term effects of RTAs formed by developing countries on members' trade diminish 15 years after their implementation. In distinguishing trade direction from developed to developing countries and vice versa, we noted that direction-specific South-North RTAs appear to take less time to see larger increases in Southern exports to the Northern members than direction-specific North-South RTAs do.
Vo Minh Hoang Do,Long Giang Bach,Diem-Huong Nguyen Tran,Van Du Cao,Thi Nhu Quynh Nguyen,Duc Thuan Hoang,Van Cuong Ngo,Dai Hai Nguyen,Thai Thanh Hoang Thi 한국생물공학회 2020 Biotechnology and Bioprocess Engineering Vol.25 No.2
Polyamidoamine (PAMAM) dendrimer is emerging as an effective nanocarrier for delivering anticancer drugs. Still, unmodified PAMAM dendrimer is hardly used in vivo because of unsatisfied drug release, high tendency of interfering with cellular membranes, and rapid clearance by reticuloendothelial system. In this study, low generation polyamidoamine (PAMAM) dendrimer G3.0 is developed and surface modified with methoxypolyethylene glycol (PAMAM G3.0-mPEG) to overcome its limitations. Specifically, PAMAM G3.0 conjugated with mPEG at different ratios are investigated to effectively eliminate its charge-associated toxicity, in which PAMAM G3.0-mPEG- 8 is chosen for oxaliplatin (OX) loading. Results reveal that OX-loaded PAMAM G3.0-mPEG-8 has desirable size, good entrapment efficiency, and sustained release with minimum drug leakage. In addition, Resazurin assay indicates that the toxicity of loaded OX is reduced as compared to free drug but still maintain substantially anticancer activity on HeLa cells, suggesting the potential application of PAMAM G3.0-mPEG-8 for OX delivery in cancer therapy.
Truc Thi Hoang Nguyen(Truc Thi Hoang Nguyen ),Mi Young Eo(Mi Young Eo),Kezia Rachellea Mustakim(Kezia Rachellea Mustakim ),Mi Hyun Seo(Mi Hyun Seo),Hoon Myoung(Hoon Myoung ),Soung Min Kim(Soung Min Ki 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.1
The biocompatibility and durability of implant fixtures are major concerns for dentists and patients. Mechanical complications of the implant include abutment screw loosening, screw fracture, loss of implant prostheses, and implant fracture. This case report aims to describe management of a case of fixture damage that occurred after screw fracture in a tissue level, internal connection implant and microscopic evaluation of the fractured fixture. A trephine bur was used to remove the fixture, and the socket was grafted using allogeneic bone material. The failed implant was examined by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), which revealed a fractured fixture with both normal and irregular bone patterns. The SEM and EDS results give an enlightenment of the failed fixture surface micromorphology with microfracture and contaminated chemical compositions. Noticeably, the significantly high level of gold (Au) on the implant surface and the trace amounts of Au and titanium (Ti) in the bone tissue were recorded, which might have resulted from instability and micro-movement of the implant-abutment connection over an extended period of time. Further study with larger number of patient and different types of implants is needed for further conclusion.