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A straightforward but effective approach to fabricate shape-memory polyurethane thermosets by tailoring the soft phase composition of two- and fourarmed polycaprnlactone (PCL) polyols is described. As the crystallization of the PCL soft phase has an effect on driving the self-assembly of H-bonds, a good balance of tensile performance and thermo-healability can be achieved by regulating the ratio between PCL-diol and PCL-tetrol in the soft phase. The inferior ability of crystallization of the segments near the branching point gives rise to enhancement of the both overall healability and toughness of the network. Healings of punctured holes and cuts are assessed using optical microscopy (OM), field-emission scanning electron microscopy (FE-SEM), tensile analysis, and two-electrode impedence characterization. The obtained network with the best healing behavior has a soft phase composition with the PCL-diol/PCL-tetrol molar ratio of 2/1, a tensile toughness of 64 MPa [J.sup.-1] and a healing efficiency (estimated by recovery of tensile strength) of nearly 80%. Highlights * The composition of the soft phase of polyurethane networks was tailored. * Two- and four-armed polycaprolactones were used for the network structure. * A good balance between mechanical and healing performance was obtained. * Healing of complete cuts showed tensile strength recovery of nearly 80%. KEYWORDS polyurethanes, semicrystalline polymers, shape memory, thermo-healable, 1 | INTRODUCTION The introduction of recovering features based on either extrinsic agents or intrinsic factors such as dynamic linkages and shape-memory effects in polymeric structures has created a new [...]

The purpose of the study was to examine students' learning experience with Google Meet, a virtual learning tool in tertiary contexts in Vietnam. The explanatory sequential mixed-methods design was used with the participation of 188 English as a Foreign Language (EFL) Vietnamese students at a private university in Vietnam. Findings from both the questionnaires and focus group interviews show that the students have a positive learning experience with Google Meet. Particularly, they perceive that breakout rooms in Google Meet enhance their interaction with their lecturers and peers and promote their sense of community in virtual learning classes. Additionally, the flexibility of virtual learning facilitates learners to solve learning-prevented problems, such as internet connection and power outage. Furthermore, blended learning is perceived as a highly preferred learning mode even after the pandemic. Based on the results, pedagogical strategies are implicated to maximize the effectiveness of virtual classes.

Improving business performance is an important task for all businesses, including the logistics industry. However, at present, there are few studies on the influence of employee competence and competence-job-fit on business performance, in which employee performance and job satisfaction are mediating variables and social exchange is moderating the relationships between employee competence and employee performance and job satisfaction. This research gap will be solved by the authors in this research to achieve the goal of improving the performance of enterprises. Quantitative research method is applied in the research. Data were collected through survey from 181 logistics enterprises in Ho Chi Minh City. The author believes that the research results will contribute significantly to the success of promoting the performance of logistics enterprises as well as to the theoretical basis of employee competence, competence-job fit, job satisfaction, employee performance, and business performance.

Purpose: Cambodian and Laotian students (CLS) are among the largest groups of international students in intra-ASEAN student mobility as well as in Vietnamese higher education institutions (HEIs). However, little has been researched on the factors influencing CLS's decision to choose Vietnam as destination country. The purpose of this study is to investigate why CLS decide to go overseas and choose Vietnam as their host country among other opportunities as well as their perceptions of the decision. Design/methodology/approach: Using qualitative methods and employing purposive sampling, data were collected by semi-structured interviews from CLS studying in a HEI in the Mekong Delta of Vietnam. The data were analysed against the push--pull framework to understand factors influencing the participants' decision. Findings: The findings show that CLS in the study were "pushed" by the perceived higher value of a foreign qualification and family encouragements. In terms of pull factors, they were attracted to choose Vietnam as the host country most observably due to scholarship opportunities. However other pull factors were also significant, especially the lack of certain skills in home countries and its congruence with Vietnam's competitive strength in offering courses for those skills. In retrospect, the participants expressed a sense of optimism, though there was also certain reservation. Research limitations/implications: The small sample restrict the generalisability of the findings. Practical implications: As an exploratory study, the findings can lay the ground for largerscale studies investigating CLS mobility in Vietnam and be employed for inbound student mobility policymaking reference for HEIs in Vietnam as well as in other developing countries. Originality/value: This study investigates why Cambodian and Laotian international students decide to go to Vietnam, a developing country in the lesser-known part of international student mobility landscape. This is a topic that remains under-researched in the Asia-bound student mobility literature. Insights from the study can not only contribute to the scholarly gap but also offer implications for HEIs in Vietnam and other Asian countries.

Abstract Background The increasing incidence and prevalence of childhood overweight (OW) and obesity (OB) are major global health challenges. This study aimed to evaluate the effectiveness of a 2-year healthy lifestyle intervention program in reducing the incidence of OW and OB among schoolchildren aged 11–12 years in Vietnam. Methods Study design: Randomized controlled trial. Participants and interventions: In total, 733 students participated in this study. Participants were included from four schools in Hanoi based on a random cluster sampling method. Students’ health outcomes were assessed at baseline and after 2 years. Main outcomes: The primary outcomes were the incidence of OW and OB, and the secondary outcomes were the prevalence and remission of OW and OB. Generalized estimating equations (GEEs) were used to determine the outcomes and risk factors. Results After the intervention, the prevalence of OW decreased by 9.24% in the intervention group and 3.01% in the control group. After adjustment for age and sex, the odds of overweight were 36.7% lower in the intervention group than in the control group (OR = 0.633; 95% CI: 0.434–0.925; P = 0.018). The incidence of OW was 1.31% in the intervention group compared with 5.33% in the control group. After adjustment for age and sex, the odds of incident overweight in the intervention group were 77.4% lower than in the control group (OR = 0.226; 95% CI: 0.063–0.813; P = 0.023). The proportion of patients who achieved OW remission was 41.22% in the intervention group and 28.68% in the control group. After adjustment for age and sex, the odds of OW remission of overweight were 2.219 times greater in the intervention group than in the control group (OR = 2.219; 95% CI: 1.220–4.036; P = 0.009). For most OB-related factors, there were no significant differences between the intervention and control groups. Conclusion A multicomponent healthy lifestyle intervention was effective in reducing the incidence of OW; however, it had no significant effect on OB among children aged 11–12 years in Hanoi, Vietnam. Trial registration Retrospectively registered number: UMIN000014992, 20/08/2023.

The grey-shanked douc langur (Pygathrix cinerea) is a recently described, critically endangered primate, endemic to Vietnam. In this study, we describe the Central Highland species’ complete mitochondrial genome (mitogenome—mtDNA). It is a circular molecule with a length of 16,541 base pairs (bp). The genome consists of 37 genes, consistent with those found in most other vertebrates, including 13 protein coding genes, 22 transfer RNAs, and two ribosomal RNAs. A comparison with the mitogenomes of more than 50 primates showed that the mitogenome of Vietnamese Central Highland Pygathrix cinerea has a conservative gene order. We identified 43 nucleotide differences when comparing this genome with a previously published mitogenome of Pygathrix cinerea. It is evident that there are distinct differences between the Pygathrix cinerea we are currently studying and other Pygathrix cinerea specimens. These differences are unlikely to be solely the result of sequencing errors, as the mitogenomes were generated using high-quality methods. The genetic divergence observed between the two Pygathrix cinerea mitogenomes implies the potential existence of at least two distinct lineages or forms of this primate species within its native range in Vietnam.

Establishing a curriculum for painting art projects within the Montessori education model is imperative for fostering objective practice conducive to social development. Through this investigation, we employ theoretical research methodologies to scrutinize the contextual nuances, program dynamics, and influential factors shaping the implementation of art projects in early childhood classrooms catering to children aged 3 to 6, harmonizing with the Montessori educational ethos. Utilizing the collaborative autoethnography method (Chang et al., 2014), we delve into experiential insights from practical educational pursuits. Preliminary findings indicate the efficacy of art education for this age group, underscored by key aspects including 1) The harmonization of theory and practice throughout program development and implementation; 2) the formulation of precise program framework implementation strategies; 3) the provision of comprehensive providing assistance and direction in selecting art projects and activities for preschool educators. These research outcomes offer a novel perspective on the symbiotic relationship between theory and practice, thus fostering the adoption of innovative methodologies in preschool education within the Vietnamese context.

Abstract In this paper, we study the formation of optical bistability (OB) and optical multistability (OM) in a degenerate four-level atomic system by an external magnetic field that is excited by a probe laser field, a coupling laser field and a signal laser field. The coupling field can cause electromagnetically induced transparency (EIT) for the probe field in the atomic medium, while the signal field and/or external magnetic field can switch between single-EIT and two-EIT regimes. Based on these properties, OB and OM effects can be formed at two different frequency regions of the probe field (two channels). By adjusting the magnetic field or the intensity and the frequency of laser fields, the threshold intensity and the width of OB or OM can also be changed simply. The model can be useful for experimental observations and applications in modern photonic devices.

This study aimed to explore the relationship between three factors: enforcement of labor social welfare labor laws, internal corporate social responsibility (CSR) implementation, and job satisfaction as perceived by managers in the commercial banking sector. The research utilized a qualitative research method – in-depth interviews based on a semi-structured questionnaire with 20 experienced managers from 11 commercial banks in Vietnam, an emerging economy. Findings indicated a positive reciprocal relationship between enforcement of social welfare labor laws and internal CSR responsibilities of enterprises. Additionally, enforcing labor social welfare laws and internal CSR implementation positively impacted employee job satisfaction. The study also identified five aspects of internal CSR implementation towards employees: (1) timely and full payment of wages, bonuses, and benefits; (2) establishing a conducive work environment; (3) policies addressing human rights, health, and safety at work; (4) fair and democratic treatment, providing training and career advancement opportunities, and protecting employees through organizational activities; (5) having legal norms, procedures, mechanisms for recording, feedback, monitoring, and reasonable evaluation of job performance. These findings contribute to enriching both theoretical understanding and practical implications regarding the interplay of these three factors in commercial banks, encouraging managers to effectively implement social welfare laws and internal CSR implementation. AcknowledgmentThis collaborative research involves scholars from the University of Law - Hue University and Duy Tan University. The authors extend their gratitude to both institutions for their support and assistance in facilitating the publication of this research. In addition, the authors would like to thank the Editor-in Chief and a reviewer for their helpful comments that in our view have helped to improve the quality of the manuscript significantly. This study was conducted based on decision No. 4741/QD-ĐHDT dated October 18, 2023 of Duy Tan University, Vietnam.

Aim: To describe prevalence of early initiation of breastfeeding and associated factors among Vietnamese mothers. Methods: A self-administered questionnaire was used to survey 1812 mothers whose infants were aged 0 to less than 30 months in multi-center Vietnam. Multivariate logistic regression was performed to identify factors associated independently with early initiation of breastfeeding. Results: Prevalence of early initiation of breastfeeding was 57.2 % and this prevalence was higher in female infants compared with male infants (p = 0.004). Factors associated with increased odds of early initiation of breastfeeding include female infants (aOR: 1.33; 95%CI: 1.06 to 1.68) living in urban areas (aOR: 1.34, 95%CI: 1.05 to 1.71), giving birth in private hospitals (aOR: 1.94, 95%CI: 1.25 to 3.03), vaginal birth (aOR: 1.70, 95%CI: 1.34 to 2.16). Factors associated with decreased odds of early initiation of breastfeeding include higher educational level, mother's weight gain during pregnancy, and infant complication at birth. Compared with mothers who had not experienced skin-to-skin contact with their babies, the prevalence of early initiation of breastfeeding was higher in mothers who experienced 90 min (aOR: 10.98, 95%CI: 6.79 to 17.75). Conclusion: Focusing on modifiable factors should be a key priority to help improve early initiation of breastfeeding practice.

Vegan cosmetics have become more popular among consumers due to increased environmental awareness and health consciousness after the COVID-19 pandemic. This study aims to investigate the influence of beauty vloggers’ credibility on consumers’ purchase intention toward vegan cosmetics. An integrated research model was built based on the source credibility and stimulus-organism-response theory. Data were collected from a questionnaire survey with 382 Vietnamese consumers at the minimum age of 18 who had experience watching beauty vloggers reviewing vegan cosmetics on YouTube. Partial least squares structural equation modeling was applied to analyze the collected data. The results show that the beauty vloggers’ expertise, trustworthiness, and physical attractiveness all positively impact cognitive and affective attitudes, influencing consumers’ purchase intention. Furthermore, these factors positively impact consumers’ intention to purchase vegan cosmetics. Therefore, cognitive and affective attitudes partially mediate the relationship between the beauty vloggers’ credibility and consumers’ purchase intentions. Given that the direct and indirect effects point in the same direction, these mediators are classified as complementary. This study contributes to deeper understanding of consumers’ intention to purchase vegan cosmetics recommended by beauty vloggers. Acknowledgment The authors would like to thank the Posts and Telecommunications Institute of Technology (PTIT) and the International School, Vietnam National University (VNU), Hanoi, Vietnam, for providing research assistance.

This cross-sectional study aimed to assess the knowledge and perceptions of sexual and reproductive health (SRH) and factors influencing perceptions among adolescents living in Son La, a mountainous region in Vietnam. A total of 382 adolescents participated in the study, with 59.7% girls and 40.3% boys. Findings revealed that the level of knowledge of SRH among adolescents in Son La is markedly different among girls and boys, where girls exhibited higher knowledge compared to boys in all aspects surveyed. The average SRH perception score was moderate (21.7 ± 8.05; maximum score = 33). Adolescents’ understanding of sexual intercourse, misconceptions related to first-time sexual experiences, and awareness of contraceptive methods were significantly associated with SRH perception scores. These findings underscore the need for targeted health education interventions in mountainous areas, emphasizing the importance of enhancing SRH knowledge and awareness among all adolescents, with gender-specific needs. Such efforts can contribute to improved SRH outcomes among adolescents in these regions.

Introduction: Nursing students, due to limited clinical practice and challenges in building relationships, are highly vulnerable to workplace violence. Understanding their responses to such incidents is critical, given its significant implications. This study aimed to investigate nursing students' coping strategies for workplace violence in Vietnam Methods: A cross-sectional study was conducted on 776 nursing students conveniently sampled from 10 Vietnamese universities through the KoBotool Box platform. The research instrument has been developed in accordance with findings from several antecedent studies. Frequencies and percentages were used to describe coping strategies, and χ2 test or Fisher's exact test was used to test differences in reporting workplace violence experiences between student groups. Results: Students used a variety of strategies to respond to workplace violence. Trying to stay calm to explain to the perpetrator was the most common strategy (71.8% for physical violence; 40.5% and 36.9% for non-physical violence). The rate of reporting experiences of workplace violence with physical violence and non-physical violence by patients/patients' relatives and non-physical violence directed by medical staff/instructors was 35.9%, 9.5%, and 7.9%, respectively. The most common reason nursing students do not report an incident was because they believe it is part of their clinical placement. Conclusion: Students' response strategies to workplace violence are emotionally oriented and inadequate in their experiences of workplace violence. Appropriate training on how to respond to and report exposure to workplace violence should be provided and or enhanced for nursing students.

Tetracycline hydrochloride is a widely used antibiotic for treating bacterial infections, but its misuse poses serious health risks. Therefore, it is crucial to accurately detect tetracycline in complex matrices. In this study, we propose a simple, enzyme-free absorbance biosensor for tetracycline detection based on the optical properties of chitosan-capped ZnS doped with Mn nanomaterials. The biosensor can detect tetracycline in a range from 13.1 pM to 72.2 pM, with the best detection limit being 2.13 pM in deionized water. It can also differentiate tetracycline from ampicillin, penicillin, cephalexin, amoxicillin, and glucose within the aforementioned range. Moreover, this novel sensor has proven reliable over time, and its performance has been demonstrated in tap water and milk. The results have the potential to revolutionize antibiotic monitoring in clinical and environmental settings, thus contributing to the global fight against antibiotic resistance.

This study aims to analyze the impact of 7 components on the marketing - mix strategy on the satisfaction and loyalty of programming course students at the branch of CodeGym Vietnam Joint Stock Company in Hue. The study combined exploratory factor analysis (EFA), and confirmatory factor analysis (CFA) to measure the impacts of each component into the success of marketing - mix strategy then applied linear structural modeling (SEM) to test the related hypothesis of driving parameters to the customers’ satisfaction and loyalty. The finding indicated that there are 3 major factors having positively impact on customer satisfaction and loyalty, including: product, distribution and process. On the contrary, price, promotion, people and facilities factors have a negative impact on student satisfaction. The study also suggests several important implications to enhancing the efficiency of marketing mix strategy - with a need to focusing on developing marketing mix programs for centers to enhance customer satisfaction and loyalty.

Abstract The global threat of antibiotic resistance has increased the importance of the detection of antibiotics. Conventional methods to detect antibiotics are time-consuming and require expensive specialized equipment. Here, we present a simple and rapid biosensor for detecting ampicillin, a commonly used antibiotic. Our method is based on the fluorescent properties of chitosan-coated Mn-doped ZnS micromaterials combined with the β-lactamase enzyme. The biosensors exhibited the highest sensitivity in a linear working range of 13.1–72.2 pM with a limit of detection of 8.24 pM in deionized water. In addition, due to the biological specificity of β-lactamase, the proposed sensors have demonstrated high selectivity over penicillin, tetracycline, and glucose through the enhancing and quenching effects at wavelengths of 510 nm and 614 nm, respectively. These proposed sensors also showed promising results when tested in various matrices, including tap water, bottled water, and milk. Our work reports for the first time the cost-effective (Mn:ZnS)Chitosan micromaterial was used for ampicillin detection. The results will facilitate the monitoring of antibiotics in clinical and environmental contexts.

The quest for global ranking has motivated higher education institutions (HEIs) in Vietnam to increase the number of international students in their enrolments. However, little is known about experiences of current international students in Vietnamese HEIs. This article offers a mosaic of international student experiences (ISE) in a Vietnamese-taught course offered by a Vietnamese university. The data show that teaching staffs play a crucial role in the satisfaction of international students, however, services and physical facilities are areas that need significant improvement. It also discusses other interactive aspects of ISE before presenting the case of an international student with disability to show how international mobility, aspiration, and personal determination can navigate him through a journey that was nothing short of extraordinary. This article is also to answer the recent scholarly call for a more geographically diverse and transformation-centred ISE literature, which is believed to remain relevant in the future.

Student mobility has become a global phenomenon with an upward trend in the past two decades, and Asian countries are becoming important receiving countries. Such phenomenon has been increasingly investigated producing a growing body of literature on Asia-bound international student mobility. However, while some countries stand in the spotlight of international student scholarship, other lesser known destinations remain underrepresented. This article provides an exploratory effort to examine factors that attract international students to Vietnam, a country which has not been visible on international student mobility landscape as a receiving destination. The study employs push-pull factors framework and a mixed methods approach combining qualitative and quantitative methods (n = 94) to examine the push-pull factors that influence the decision of international students to choose Vietnam as the destination country and a Vietnamese higher education institution as host institution. Research findings show that major push factors include aspirations for new experiences, home country economic outlook and pessimistic job prospects at home. Regarding pull factors, at national level, bright economic prospect is the top pull factor attracting international students to a developing country like Vietnam, and at institutional level, the university's reputation and its Vietnamese Studies and language programmes are the most important pull factors attracting international students to the university to study. Based on the research results, recommendations are proposed for higher education institutions in Vietnam and other developing Asian countries to attract international students with implications against the context of the ongoing COVID-19 pandemic.

Purpose: Hyperuricemia is a significant health concern worldwide. It is important to identify pregnant women who may be at risk to enhance pregnancy care. This study aims to investigate the prevalence of hyperuricemia and identify some factors associated with hyperuricemia among Vietnamese pregnant women. Methods: In this cross-sectional study, 340 pregnant women were enrolled from May 2021 to December 2021. Demographic information, anthropometric data, and food frequency consumption (within 1 month before delivery) were collected from the participants. In addition, the biochemical indices of the participants were collected from medical records. Multivariate logistic regression was deployed to identify associated factors (p

Introduction: To date, newborn screening (NBS) for proximal urea cycle disorders, including Ornithine transcarbamylase deficiency (OTCD), was not recommended due to the lack of appropriate tests and insufficient evidence of the benefits. This study aimed to investigate the potential of tandem mass spectrometry (MS/MS) for OTCD screening and its value in guiding further investigation to obtain a final diagnosis in high-risk patients. Methods: The study included patients with OTCD referred to the National Children's Hospital between April 2020 and November 2023. A retrospective evaluation of amino acid concentrations measured by MS/MS and their ratios in patients with early-onset and late-onset OTCD was conducted. Results: While all ten early-onset cases had glutamine concentrations above the upper limit, only five of them had citrulline concentrations below the lower limit of the reference interval. Only two late-onset cases had elevated glutamine levels, while all had citrulline within reference intervals. The Cit/Phe ratio was decreased, and the Gln/Cit and Met/Cit ratios were increased in all early-onset OTCD cases, while they were abnormal in only one late-onset case. Conclusions: The preliminary results suggest that hyperglutaminemia, in combination with low or normal citrulline concentrations and specific ratios (Gln/Cit, Met/Cit, and Cit/Phe), can serve as reliable markers for screening early-onset OTCD in high-risk patients. However, these markers proved less sensitive for detecting the late-onset form, even in symptomatic patients.