https://digital.lib.ueh.edu.vn/handle/UEH/13 Avenue for Islamic Capital Markets knowledge Mon, 01 Jun 2026 12:15:16 GMT 2026-06-01T12:15:16Z http://localhost:8080/retrieve/f5005045-364d-480a-ae20-a6e4e167ccc4/1.png https://digital.lib.ueh.edu.vn/handle/UEH/13 https://digital.lib.ueh.edu.vn/handle/UEH/78041 Title: Lòng tin, tác động xã hội và hành vi người tiêu dùng trên thị trường thực phẩm tươi sống tại TP. Hồ Chí Minh Author(s): Lê Thị Minh Tuyền Abstract: Luận án tập trung xem xét các yếu tố ảnh hưởng đến hành vi tiêu dùng thực phẩm tươi sống (TPTS) trong bối cảnh tại đô thị lớn, cụ thể là TP.HCM - nơi thị trường thực phẩm tồn tại sự đa dạng kênh bán lẻ và chênh lệch thông tin giữa người mua và người bán. Dựa trên nền tảng các lý thuyết như: Hành vi có kế hoạch (TPB), Hành vi dự định (TRA), Phát tín hiệu (Signaling Theory), Bất cân xứng thông tin (InformationAsymmetry Theory) và lý thuyết Chuyển giao sự tin tưởng (Trust Transfer Theory), luận án tích hợp nhiều yếu tố như: lòng tin, tác động xã hội và bối cảnh tiêu dùng chịu rủi ro (dịch COVID-19) để xây dựng mô hình xem xét hành vi người tiêu dùng.Về phương pháp, luận án sử dụng nhiều mô hình kiểm định và ước lượng hiện đại nhằm phản ánh hành vi tiêu dùng đa chiều. Cụ thể, mô hình Probit đa biến (Multivariate Probit – MVP) được áp dụng để ước lượng xác suất người tiêu dùng (NTD) lựa chọn đồng thời nhiều kênh mua sắm (siêu thị, cửa hàng tiện lợi, chợ truyền thống, thương mại điện tử, mạng xã hội). Mô hình Nhị thức âm chuẩn hóa(Standardized Univariate Negative Binomial – SUNB) nhằm mục đích phân tích tần suất mua sắm tại các kênh. Cuối cùng, mô hình hồi quy OLS, Tobit dùng ước lượng mức chi tiêu cho TPTS ở từng kênh bán lẻ. Cách tiếp cận đa mô hình này cho phépluận án phản ánh toàn diện hành vi tiêu dùng đa kênh, từ quyết định lựa chọn đến mức độ và cường độ chi tiêu, qua đó nâng cao độ chính xác và sức thuyết phục của kết quả thực nghiệm. Kết quả nghiên cứu cho thấy lòng tin vào các tác nhân trong chuỗi cung ứng và tác động xã hội từ nhóm tham khảo có tác động đáng kể đến hành vi lựa chọn kênh bán lẻ, tần suất và chi tiêu cho TPTS. Trong bối cảnh xuất hiện COVID-19, lòng tin và an toàn trở thành động lực chính thúc đẩy người tiêu dùng chuyển mạnh sang kênh bán lẻ hiện đại và trực tuyến. Về mặt lý thuyết, luận án mở rộng mô hình TPB khi tích hợp biến lòng tin theo từng tác nhân và tác động xã hội trong bối cảnh tiêu dùng rủi ro cao, đồng thời bổ sung bằng chứng định lượng mới cho các thị trường đang phát triển. Về thực tiễn, luận án đưa ra hàm ý quản trị hỗ trợ cơ quan quản lý và doanh nghiệp trong việc tái cấu trúc hệ thống phân phối, tăng cường minh bạch thông tin, và củng cố niềm tin NTD trong giai đoạn hậu COVID-19. Thu, 01 Jan 2026 00:00:00 GMT https://digital.lib.ueh.edu.vn/handle/UEH/78041 2026-01-01T00:00:00Z https://digital.lib.ueh.edu.vn/handle/UEH/78002 Title: Innovation and firms' outcomes: The case of Vietnam Author(s): Huynh Ngoc Quang Anh Abstract: The thesis explores the relationship between Research and Development (R&D) fund allocation and firms’ outcomes (including financial performance and investment decisions, particularly in tangible and intangible assets) of Vietnamese listed firms from the 2006-2022 period, taking into consideration the effect of firms’ locations on the nearest innovation hub/ high technology centers. The findings indicate that when the distance between firms and these innovation centers increases, the effect of R&D on firm performance diminishes. Additionally, the findings reveal a counterintuitive relationship between intangible assets: as firms are located farther from high-tech centers, the positive impact of R&D on their investment in intangible assets becomes stronger. This suggests that geographically isolated firms must rely more on internal R&D to compensate for the lack of external knowledge spillovers. Furthermore, the findings show that when the High Technology Law took effect in 2009, it also influenced firms’ investment decisions, with its effects moderated by firms’ R&D activities and their proximity to innovation centers. At the industry level, the results suggest that distance from high technology centers also moderates the relationship between firms’ R&D allocation and investment choices. Finally, a similar effect is proposed by foreign ownership of firms. This thesis's key contribution is the role of location in determining both firm- and broader economic-level outcomes. These results confirm that geographic distance imposes more constraints, offering policymakers and firm managers valuable insights to help them allocate resources effectively toward productivity and innovation. Thu, 01 Jan 2026 00:00:00 GMT https://digital.lib.ueh.edu.vn/handle/UEH/78002 2026-01-01T00:00:00Z https://digital.lib.ueh.edu.vn/handle/UEH/77680 Title: The evolution of influencer marketing in super connection era: Unpacking the roles of virtual and micro-Influencers Author(s): Le Vu Lan Oanh Abstract: Virtual influencers and micro influencers nowadays are increasingly shaping consumer behaviors through social media platforms. This dissertation applies the Cognitive – Affective – Conative framework to investigate how these influencers employ their characteristics as cognition factors represent the psychological, source, and content creation aspects of the influencers, respectively - homophily, credibility, and post’ commercial orientation- engage with followers through para-social relationship and eventually result in some specific behaviors under the framework of decision-making stages. Furthermore, anthropomorphism is incorporated into the study of virtual influencers to examine their visually appealing attribute prior to assessing mechanisms. There are two experimental studies in this dissertation with a dataset of 808. Study 1 picked sixteen profiles of micro influencers who are working in different industries on Facebook and Instagram. The results proved that micro influencers’ credibility was the most strengthen factor positively associated with para-social relationships to information search and buying stages. Even post’ commercial post has a small positive impact on other variables, it contributes as a pioneering study to enhance the positive relationship in micro-influencer activities contrary to hypothesis development (negative effect). Study 2 created four online scenarios of four virtual influencers. The results showed that virtual influencers have significant potential to replace human influencers in marketing initiatives, as most of the relationships are proven. It suggested that consumer are initially drawn to animated virtual influencers due to homophily and tend to place greater trust in human-like virtual influencers. Moreover, higher commitment to para-social relationships fosters increased decision-making stages, especially information search and buying stage. The dissertation provides theoretical and practical implications into the influencer marketing. In theoretical perspective, this dissertation contributes new research in the emerging topic includes the presence of virtual influencers and micro influencers. Moreover, drawing on Cognitive-Affective-Conative framework, this dissertation digs deepen into a fresh theoretical understanding of how influencers influence their followers’ emotions and guide them in making decision through the lens of decision-making stages. This dissertation was implemented in Vietnam -a typical developing country-, so it also offers a thorough look for influencers in developing countries, highlighting how the emerging virtual influencers and micro influencers can shape consumer behaviors. In practical perspective, this dissertation opens the influencer types who can participate in the right marketing initiatives with better saving cost. Moreover, it shapes the role of influencer-follower relationships in continuum behaviors on digital platforms. It will be a fairly reference to those countries similar to Vietnam market. Thu, 01 Jan 2026 00:00:00 GMT https://digital.lib.ueh.edu.vn/handle/UEH/77680 2026-01-01T00:00:00Z https://digital.lib.ueh.edu.vn/handle/UEH/77672 Title: Antecedents and outcomes of organizational ambidexterity: The moderating role of uncertainty environment Author(s): Pham Tien Dung Abstract: In today's highly competitive global environment, businesses are faced with many challenges in improving operational efficiency, while continuously innovating to improve productivity and maintain competitiveness. Digital technology increasingly plays an important role in the operations of businesses to address these challenges. To enhance the effectiveness of digital technologies in businesses, organizational ambidexterity (OA) – the ability to balance between exploitation and exploratoration – has become one of the top strategies prioritized by organizations. This dissertation provides a comprehensive understanding of the concept of OA in the digital transformation of businesses in Ho Chi Minh City, Vietnam. Based on the main theoretical framework of OA, combined with the RBV theory, this study examines the impact mechanism between the antecedents – OA – sustained competitive advantage (SCA), and at the same time examine the mediating and moderating roles in this impact mechanism. Based on a valid sample of 436 businesses in many various fields in Ho Chi Minh City, Vietnam, through the quantitative analysis process and hypothesis testing from the PLS-SEM method, the results have affirmed the important role of OA in the impact mechanism between the antecedents – OA – SCA, and the role of mediating and moderating variables in this mechanism. There are three main findings of this study as follows: First, in the context of digital transformation in businesses, OA is a crucial factor for organizations to achieve SCA. The results also show that both structural and contextual organization antecedents simultaneously promote to achieve OA. Second, Industry 4.0 readiness (I4.0R) plays a crucial role for organizations in the context of digital transformation. The results show that I4.0R is both an antecedent for promoting OA and a driver for SCA, and also plays a partial mediating role in promoting the structural antecedent to achieve OA. Third, the study also confirms the moderating role of uncertainty environment and participative leadership in achieving OA. Both factors play a positive moderating role in the impact of organizational context antecedent on OA. However, the moderating role of these two factors in the relationship between structural antecedents and OA remains unclear. Based on these research results, the dissertation provides discussions, theoretical contributions, and managerial implications from the research findings. Thu, 01 Jan 2026 00:00:00 GMT https://digital.lib.ueh.edu.vn/handle/UEH/77672 2026-01-01T00:00:00Z