Ho Chi Minh City Open University Journal of Science
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BİRLEŞME VE SATIN ALMALARIN FİRMA PERFORMANSINA ETKİLERİ: BORSAİSTANBUL'DA FAALİYET GÖSTEREN İMALAT SANAYİ FİRMALARI ÜZERİNE BİRARAŞTIRMA
No full textFrom ambidextrous innovation to digital servitization: The moderating role of digital empowerment in Vietnamese Small and Medium-sized manufacturing Enterprises (SMEs)
No full textThis study investigates how innovation ambidexterity and digital empowerment jointly enable digital servitization and performance outcomes in manufacturing SMEs in an emerging economy context. Drawing on dynamic capabilities theory and the servitization/digitalization literature, we conceptualize exploratory and exploitative innovation as microfoundations of digital servitization and examine digital empowerment as an internal enabling condition. We propose that digital servitization, in turn, enhances both operational effectiveness and customer participation in value co-creation. Using survey data from 205 owners and CEOs of Vietnamese manufacturing SMEs and 5-point Likert scales, we test the research model with Partial Least Squares Structural Equation Modelling (PLS-SEM). The results show that both exploration and exploitation innovation positively influence digital servitization, with a stronger effect for exploration innovation. Digital empowerment significantly strengthens the relationship between exploitative innovation and digital servitization, but does not significantly moderate the exploratory innovation-digital servitization link. Digital servitization exerts significant positive effects on operational effectiveness and on customer participation in value co-creation, underscoring its significant role in translating innovation capabilities into both efficiency and relational gains. The study advances understanding of the microfoundations of digital servitization in manufacturing SMEs, nuances the role of digital empowerment as a contingent rather than universal amplifier of innovation ambidexterity. It provides actionable implications for SME leaders seeking to leverage digital tools, skills, and autonomy to turn innovation efforts into digitally enabled service offerings and improved performance
Virtual Assistant Usage Habit: The Mediating Role of Emotional and Cognitive Trust in the Context of Anthropomorphism, Enjoyment, Intelligence
No full textThe aim of this study is to examine the relationship between the habit of using virtual assistants and perceived anthropomorphism, perceived enjoyment and perceived intelligence. Additionally, the study tests the mediating role of emotional and cognitive trust in the relationship between perceived anthropomorphism, perceived intelligence and the habit of using virtual assistants. The research model was tested using the Structural Equation Modeling (SEM) approach. Data for the study were collected through an online survey from 598 consumers aged 18-25 residing in Turkey. This study advances consumer behavior literature and provides guidance to managers of emerging technology-based businesses
The Cognitive-Affective Feedback Loop of Stress and Depression: Exploring the Roles of Perceived Socioeconomic Status and Mental Health Awareness in Filipino College Students
No full textAbstract
This study examined the cognitive pathways linking perceived stress to depressive symptoms in a sample of 440 Filipino college students by testing both forward and reverse serial mediation models. In the forward model, perceived stress was hypothesized to lead to reflective rumination, which subsequently escalates into brooding rumination, increasing hopelessness and ultimately resulting in depression. A reverse model was also tested to explore a potential feedback loop from depression back to perceived stress. Additionally, the moderating effects of Perceived Socioeconomic Status (PSES) and Perceived Mental Health Awareness (PMHA) were evaluated. Participants aged 18 to 24 completed validated self-report measures assessing perceived stress, rumination subtypes, hopelessness, and depressive symptoms, along with single-item scales measuring PSES and PMHA. The data were gathered face to face through classroom test administration around August 2025. Serial and conditional mediation analyses revealed significant indirect effects in both the forward and reverse models, supporting the existence of a dynamic cognitive-affective feedback loop involving rumination and hopelessness. Brooding rumination and hopelessness emerged as key mediators, with partial mediation indicated by a significant direct effect of perceived stress on depression. Moderation analyses demonstrated that low PSES intensified the pathway from stress to depression, whereas high PSES attenuated early mediation effects. In contrast, PMHA did not significantly moderate any of the examined pathways. These findings suggest that perceptions of socioeconomic status may buffer the progression from stress to depression, while mental health awareness alone may be insufficient to disrupt this cascade. Interventions targeting brooding rumination and hopelessness, particularly among students with low perceived socioeconomic status, may enhance efforts in preventing and treating depression
Kinh doanh thông minh và kế toán quản trị: Tổng quan hệ thống và phân tích trắc lượng thư mục
No full textThis study conducts a Systematic Literature Review (SLR) combined with bibliometric analysis to identify the intellectual structure and scholarly trends concerning the relationship between Business Intelligence (BI) and Management Accounting Systems (MAS) during the period 2005 - 2025. Based on 52 studies retrieved from the Scopus database and screened following the PRISMA 2020 protocol, the findings reveal four major research themes: (1) information provision and managerial feedback; (2) improvement of MAS techniques and tools; (3) the impact of big data and emerging technologies on MAS; and (4) the extent of use and user satisfaction. The reviewed studies employ diverse theoretical foundations and methodological approaches, while recent research has shifted from traditional accounting topics toward technology-oriented perspectives such as Artificial Intelligence (AI), big data analytics, and digital transformation. This shift reflects the evolutionary trajectory of MAS in the digital economy and highlights the growing integration between BI and management accounting. The study contributes to consolidating existing knowledge, identifying research gaps and future directions, and providing insights for both academics and practitioners in designing, integrating, and operating BI-MAS systems more effectively.Bài viết thực hiện tổng quan hệ thống (Systematic Literature Review - SLR) kết hợp phân tích trắc lượng thư mục nhằm nhận diện cấu trúc tri thức và xu hướng học thuật về mối quan hệ giữa hệ thống kinh doanh thông minh (Business Intelligence - BI) và hệ thống kế toán quản trị (Management Accounting Systems - MAS) giai đoạn 2005 - 2025. Dựa trên 52 công trình được chọn lọc từ cơ sở dữ liệu Scopus theo quy trình PRISMA 2020, kết quả cho thấy bốn nhóm chủ đề chính: (1) cung cấp thông tin và phản hồi quản trị; (2) cải tiến kỹ thuật và công cụ MAS; (3) tác động của dữ liệu lớn và công nghệ mới; và (4) mức độ sử dụng cùng sự hài lòng của người dùng. Các nghiên cứu vận dụng đa dạng khung lý thuyết và phương pháp, trong đó xu hướng gần đây chuyển từ chủ đề truyền thống sang các hướng tiếp cận gắn với trí tuệ nhân tạo, phân tích dữ liệu lớn và chuyển đổi số. Sự chuyển dịch này phản ánh quá trình tiến hóa của MAS trong bối cảnh kinh tế số, đồng thời góp phần xác định khoảng trống và định hướng nghiên cứu tương lai, hỗ trợ giới học thuật và thực tiễn trong việc thiết kế, tích hợp và vận hành hệ thống BI-MAS hiệu quả hơn
Yerel ekonomide kadın girişimcilerin rolü: Afet sonrası yeniden yapılanma sürecinde kadın girişimciliği
No full textExperimental comparison of platelet-rich plasma with conventional treatment in rats with acoustic trauma induced hearing loss
No full textObjective: This study aimed to test at an experimental level the contributions of traditional treatments with Platelet Rich Plasma (PRP) to the recovery of hearing in hearing loss due to acoustic trauma. Methods: Thirty healthy adult rats were used in the study. Otoacoustic Emission (OAE) measurements were performed before the study. All rats with OAE measurements were exposed to 95 dB pure tone sound at a frequency of 4 kHz for 60-minutes. OAEs of the experimental animals were measured again at the 24th hour and it was determined that acoustic trauma had occurred. The rats were divided into 3 groups of 10, the first group was the control group, the 2nd group was determined as the group in which approximately 0.5 mL of intratympanic PRP was injected for 5 doses with 2 days intervals, and the 3rd group was determined as the group in which approximately 0.5 mL of intratympanic steroid was injected with 2 days intervals. OAE measurements made after 7 and 21 days were evaluated, and the treatments given were compared to the group without treatment. Results: The results obtained from day-by-day and frequency-by-frequency measurements of DPOAE were statistically compared to check whether significant results were obtained. It was determined that better results were obtained in rats with acoustic trauma treated with PRP and prednol compared with acoustic trauma who received no treatment, and close treatment efficacy results were found between PRP and prednol groups. Conclusion: When DPOAE measurements of these three groups at 4 kHz frequency on various days were compared with Group 1, a significant statistical difference was observed in Groups 2 and 3, but no significant difference was found between Groups 2 and 3. It was concluded that PRP is as effective as steroids in the improvement of hearing
The effect of intraoperative dexmedetomidine versus ketamine on postoperative pain in patients receiving a femoral nerve block for total knee arthroplasty: a randomized trial
No full textBackground: Postoperative pain control after total knee arthroplasty (TKA) remains challenging. Intraoperative dexmedetomidine and ketamine are commonly used in multimodal analgesia to reduce pain and opioid requirements. This study aimed to compare their effects on opioid consumption, pain, hemodynamics and satisfaction. Materials and methods: This prospective, randomized, double-blind study included 104 adults (≥ 18 years) with ASA I–III status undergoing TKA under spinal anesthesia. After all patients had received spinal anesthesia, they were randomized into two equal groups (n = 52). Group D received dexmedetomidine (1 µg/kg loading dose, then 0.5 µg/kg/h); Group K received ketamine (0.1 mg/kg/h without a loading dose). Sedation level was titrated to achieve a modified Observer’s Assessment of Alertness/Sedation (OAA/S) score of 3–4. Postoperatively, a single-shot femoral nerve block was administered to all patients. Primary outcome was total opioid consumption in 24 h. Secondary outcomes included Visual Analog Scale (VAS) scores, hemodynamic parameters, side effects and patient satisfaction. Results: Tramadol use in 24 h was similar (Group D: 175.29 ± 44.62 mg; Group K: 155 ± 44.48 mg; p = 0.44). VAS scores were comparable at all time points. Time to ambulation was longer in the ketamine group (Group D: 4.4 ± 1.4 h; Group K: 5.3 ± 2.5 h; p = 0.04). Group D showed significantly lower heart rate and blood pressure values at multiple time points (p < 0.001). Patient satisfaction was high in both groups and no hypotension or bradycardia occurred in any group. Conclusion: Although no significant differences were found between dexmedetomidine and ketamine, both agents provided comparable analgesia and opioid consumption, supporting their potential role as adjuvants in multimodal analgesia for patients undergoing TKA. Trial registration: ISRCTN11906298, retrospectively registered on 13.06.2025
