The Impact of TikTok UGC Videos on Online Purchase Intention: Mediating Role of Cognitive States

Background: User-Generated Content (UGC) videos have received considerable attention in recent years thanks to their great potential for buyers and sellers. However, the effect of this content on consumer behavior remains unclear, especially in the context of developing countries (e.g., Vietnam). By applying the Stimulus-Organism-Response model (S-O-R model), this paper examines the effect of UGC videos on online purchase intention. Moreover, the mediating role of cognitive responses, consisting of perceived credibility, perceived diagnosticity, and mental imagery, is also examined to offer valuable insights to businesses, enabling them to leverage and effectively promote the trends of UGC videos. Method: A convenience sampling method was employed to collect the data. A total of 318 valid respondents participated in this survey. The data was analyzed with the Partial Least Squares Structural Equation Modeling method (PLS-SEM). Results: The findings show that UGC videos have a direct impact on online purchase intention. This paper also verified that cognitive states mediate the relationship between stimuli and subsequent behavioral intentions. Conclusion: Our research findings enrich the literature on consumer’s online purchase intentions by applying the S-O-R framework by highlighting the role of cognitive responses, and improving generalizability by contributing additional consumer behavior findings in developing Asian nations. Moreover, this paper offers businesses insights into the formation of customers\u27 purchase intentions while watching UGC videos. Based on that, this paper raises practical recommendations regarding promoting the UGC video trend and creating UGC videos effectively to improve the cognitive states perceived by customers, including credibility, diagnostic value, and mental imagery

Vietnamese EFL Pre-service Teachers’ Perceptions of Attainments (Achievements) and Difficulties from a Teaching Practicum

This study explored how a teaching practicum prepared pre-service English teachers (PSETs) for their profession and what difficulties they encountered during their practicum. Forty-seven PSETs of the 2019 intake at a Vietnamese university provided information via a questionnaire, and eight participated in follow-up interviews. The PSETs’ perceived gains in teaching competencies were examined with reference to Vietnam’s English Teacher Competency Framework (ETCF), issued in 2012 by the Ministry of Education and Training (MOET). The results indicated that the teaching practicum significantly aided the PSETs’ attainments of most competency domains in the ETCF, particularly those that are associated with a greater appreciation of the values and responsibilities of being a teacher, enhanced knowledge of the curriculum and the English language, as well as the ability to reflect on and improve teaching practices. However, certain competency indicators across the competency domains, including practice with assessment, handling difficult pedagogical incidents, and organizing extracurricular activities to create a supportive and meaningful learning environment, were less clearly obtained than the others. Dealing with time constraints and workload, insufficient preparation for classroom practice, and safety precautions to deal with the post-COVID-19 pandemic were some of the major obstacles the PSETs encountered. The results have important implications for pre-service teacher education programs and the implementation of the ETCF for teacher development

Genetic diversity of gac [Momordica cochinchinensis (Lour.) Spreng] accessions collected from Mekong delta of Vietnam revealed by RAPD markers

Abstract Gac (Momordica cochinchinensis (Lour.) Spreng) (2n = 28) belongs to the Cucurbitaceae family. It is indigenous throughout in Vietnam as well as in South East Asia. To estimate the genetic diversity, 20 gac accessions collected in Mekong river delta were analyzed using 10 RAPD primers. Total of 126 fragments were obtained from ten RAPD primers, with 114 polymorphic fragments, and average of 11.4 fragments per primer. The high level of polymorphism (90.4%) was found across 20 gac accessions. The high est Nei's gene diversity value among gac accessions was H = 0.40, and the lowest was H = 0.29 with a mean of 0.36. The highest Shannon diversity index value among gac accessions was H' = 0.58 and the lowest was H' = 0.46 with an average of 0.53. Cluster analysis for genetic relationship between accessions displayed that 20 gac accessions grouped into four main clusters which genetic distance coefficient ranged from 0.29 to 0.64 and with an average of 0.54. There were defined groups according to their locations. According to these results, RAPD technique can be useful tool in genetic diversity evaluation of gac. The information achieved could also be useful for gac breeding program, cultivar differentiation and conservation

ARSENIC POLLUTION IN TUBE WELL WATER AT HANOI SUBURB VILLAGES

Joint Research on Environmental Science and Technology for the Eart

PERSISTENT ORGANIC POLLUTANTS(POPs) IN VIETNAMESE ENVIRONMENT-A REVIEW OF CONTAMINATION, FATE AND TOXIC POTENTIAL

Joint Research on Environmental Science and Technology for the Eart

The Study of Isomeric Ratios in Photonuclear Reactions Forming High Spin Isomers in the Giant Dipole Resonance Region

We studied the isomeric ratios  in  odd-odd nuclei $^{196}$Au,$^{182}$Ta  and $^{194}$Ir  with    high spin isomeric states  produced  in $^{197}$Au$(\gamma,  n)$ $^{196m,g}$Au, $^{183}$W$(\gamma,  p)$ $^{182m,g}$Ta  and $^{185}$Pt$(\gamma,  p)$$^{194m,g}$Ir  reactions  by  using  the activation  technique  and  $\gamma$-ray  spectroscopic  method  in  the  giant    dipole  resonance  (GDR)  region.  The high-purity natural Au, W and Pt  foils in disc shape were irradiated with bremsstrahlungs  generated from an  electron  accelerator  Microtron.  The  irradiated  foils  were  measured  by  the  high  resolution  $\gamma$-ray spectroscopic system which consists of a Ge(HP) detector and a multichannel analyzer. In order to improve the  accuracy  of  the  experimental  results,  necessary  corrections  were  made  in  the  $\gamma$-ray  activity measurements and data analysis.  The results were  analyzed,  discussed and compared with those of other authors  as well as with theoretical model calculations.  The study shows that the isomeric ratios in  nuclei with high spin isomeric states are much lower than that in low spin isomeric state isomers

ARSENIC POLLUTION IN GROUNDWATER IN RED RIVER DELTA, VIETNAM : SITUATION AND HUMAN EXPOSURE

Joint Research on Environmental Science and Technology for the Eart

Chemical composition and antibacterial property of Eclipta prostrata (L.) L.

Eclipta prostrata (L.) L. belonging to the Astearaceae family has been long used worldwide by various communities as a traditional medicine. We studied the antibacterial activity of different extracts from Eclipta prostrata (L.) L. against Aeromonas hydrophila, Aeromonas dhakensis, and Vibrio parahaemolyticus . The processing of this extract using repeated column and thin layer chromatographic techniques resulted in the isolation of three compounds including luteolin (1), kaempferol (2), and kaempferol-3-O-α-L-rhamnopyranoside (3), which were identified by NMR. Among them, kaempfreol-3-O-α-L-rhamnopyranoside was isolated for the first time and shows good antibacterial activity against Aeromonas hydrophila which is major pathogen for the aquaculture industry. The results demonstrate the beneficial effects of E. prostrata as an antimicrobial and bioactive compound for medicinal usages.