Key Factors Influencing Customer Satisfaction and Intention to Reuse Food Ordering Apps

This empirical study aims to identify and evaluate the crucial factors that influence customer satisfaction and their intention to reuse a food ordering app (FOA) in Ho Chi Minh City (HCMC), Vietnam. A data sample of 413 observations from customers who used the FOA was used to test hypotheses using a quantitative technique and a structural linear model. The results indicated that among the four key factors, performance expectancy, price value, and online reviews had direct and indirect effects on customers’ continued intention to use the FOA. By contrast, hedonic motivation only had an indirect effect. Satisfaction level was the mediating factor that affected customers’ continuance intention. This study provided insights into the online service and how the key factors affected customers’ satisfaction level towards the intention to reuse the FOA. When the management of the online providing service improves the key factors – performance expectancy, hedonic motivation, price value, and online reviews – they will improve the level of satisfaction towards the intention to reuse the FOA of customers in HCMC. The management of food companies should refer to this research model for restructuring and improving their business to satisfy the needs and wants of their target customers in the competitive market

SURVEY ON VOCABULARY LEARNING STRATEGIES OF HIGH–QUALITY ENGLISH STUDIES PROGRAM STUDENTS, SCHOOL OF FOREIGN LANGUAGES, CAN THO UNIVERSITY, VIETNAM

This research study aimed to investigate the usage of vocabulary learning strategies among English Studies students at Can Tho University (CTU), specifically those under the high-quality program at the School of Foreign Languages (SFL). The primary objective of the study was to identify the most commonly used strategies for learning English vocabulary and to compare the similarities and differences in how these strategies were applied among students by academic year. A total of 200 survey responses from SFL, CTU got involved in the study, and 12 of whom joined a semi-structured interview. The data gathered were analyzed using both descriptive and inferential statistical techniques. The results of this study provided insights into effective vocabulary learning strategies and would facilitate the improvement of English language teaching and learning practices at the university level.  Article visualizations

CONCEPTS AND AWARENESS ABOUT SELF-HARM AND SUICIDAL THOUGHTS AMONG HIGH SCHOOL STUDENTS CURRENTLY

The article focuses on understanding concepts and awareness of suicidal thoughts and self – harm behaviors based on quantitative and qualitative data. The quantitative database will be taken from a survey of high school students living and studying in Ho Chi Minh City. The qualitative database is taken from in-depth interviews focusing on teachers, parents, and students. The article presents the main results of the research. First, focus on the research basis including subjects, objects, and research methodology. Second, include views on suicidal thoughts and self-harm from many different perspectives, manifestations and causes of these behaviors, the prevalence of self-harm/suicidal thoughts, and consequences. Third, conclude and propose some recommendations to minimize the problem

High school administrators' and teachers' perceptions of their educational action research skills

Educational action research has attracted significant attention from teacher-researchers and school administrators in recent years due to the method's effectiveness in teaching practices. Besides, educational action research skills are regarded as one of the essential aspects of doing action research. The present study aims to examine administrators' and teachers' perceptions of their educational action research skills; compare educational action research skills between the trained and the untrained groups and between the group that conducted the research and the group that did not. Quantitative research was used in this research. The study used the 11-item scale to survey 255 respondents (16 administrators and 239 teachers) from eleven high schools in Binh Duong province, Vietnam. The descriptive analysis was used to assess perceptions of high school administrators and teachers on their educational action research skills. Our results indicate that administrators and teachers assess their educational action research skills at very good. The trained group's educational action research skills are higher than the untrained group. Educational action research skills of the group conducted research are higher than the group that did not. The present findings provide more information on educational action research among administrators and teachers in Binh Duong province. Educational action research training programs, workshops, and educational policies should be implemented to reinforce and promote educational action research skills

SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM

Seasonal changes in freshwater phytoplankton assemblages at Tuyen Lam Reservoir in the Central Highlands of Vietnam were classified into 23 functional groups based on physiological, morphological, and ecological characteristics. A total of 168 species were recorded during 10 surveys from 2015 to 2019 at 7 sampling sites, with Chlorophyta dominating in number of species. Phytoplankton abundance varied from 0.18×105 to 21.2×105 cells/L during the study period, mainly due to cyanobacteria. Seven of the 23 functional groups were considered to be dominant (relative density > 5%).  The dominant functional groups were groups M and G in the dry season and groups M, G, P, and E in the rainy season. Group M (Microcystis aeruginosa) was the most common in both seasons, while group P (Closterium, Staurastrum, Aulacoseira), group E (Dinobryon, Synura), and group G (Sphaerocystis, Eudorina) were more common in the rainy season. The Shannon diversity index (H¢) showed that phytoplankton communities were relatively diverse and that most of the study sites were lightly polluted. However, the ecological status has deteriorated at some locations due to the overgrowth of group M, leading to eutrophication in this reservoir. This study highlights the usefulness of functional groups in the study of seasonal changes in phytoplankton dynamics. Functional groups are applied for the first time at Tuyen Lam Reservoir and can be used to predict early-stage cyanobacterial blooms in future studies

Key Factors Influencing Customer Satisfaction and Intention to Reuse Food Ordering Apps

This empirical study aims to identify and evaluate the crucial factors that influence customer satisfaction and their intention to reuse a food ordering app (FOA) in Ho Chi Minh City (HCMC), Vietnam. A data sample of 413 observations from customers who used the FOA was used to test hypotheses using a quantitative technique and a structural linear model. The results indicated that among the four key factors, performance expectancy, price value, and online reviews had direct and indirect effects on customers’ continued intention to use the FOA. By contrast, hedonic motivation only had an indirect effect. Satisfaction level was the mediating factor that affected customers’ continuance intention. This study provided insights into the online service and how the key factors affected customers’ satisfaction level towards the intention to reuse the FOA. When the management of the online providing service improves the key factors – performance expectancy, hedonic motivation, price value, and online reviews – they will improve the level of satisfaction towards the intention to reuse the FOA of customers in HCMC. The management of food companies should refer to this research model for restructuring and improving their business to satisfy the needs and wants of their target customers in the competitive market

Egg-lying behavior of Anisopteromalus calandrae (Howard), an Ectoparasitoid of Lasioderma serricorne (Fabricius)

This paper describes the egg-laying behavior and reproduction capacity of Anisopteromalus calandrae in laboratory conditions. Anisopteromalus calandrae lay eggs only on the Lasioderma serricorne larvae hiden inside of grains or nests. The maximum lifespan of A. calandrae females was 32 days when they were kept with of aqua feed flour plus honey (30%) and infested with larvae of Lasioderma serricorne. One female laid 71.13 ± 4.24 eggs. The eggs were laid mostly (81.95%) during the first half of the lifespan, with the peak of 7.40 eggs/day on the 9th day. The females usually lay one egg/host larva, but sometimes they lay 2-5 eggs/host larva. They prefer to lay eggs on the 4th larval instar. Citation: Nguyen Thi Oanh, Tran Ngoc Lan, Truong Xuan Lam, 2017. Egg-lying behavior of Anisopteromalus calandrae (Howard), an ectoparasitoid of Lasioderma serricorne (Fabricius). Tap chi Sinh hoc, 39(4): 416-420. DOI: 10.15625/0866-7160/v39n4.10935.* Corresponding author: [email protected] 17 August 2017, accepted 20 November 201

SnO2 based glasses : A viable photonic system

The present work focuses on sol-gel derived SnO2-based thin glass-ceramic films doped with Er3+ ions, fabricated by dipcoating technique. Our goal is to find a viable fabrication protocol to obtain them. Thin films with a variety of composition were synthesized and their structural, optical and spectroscopic properties were investigated. The FTIR spectra and X-ray diffraction patterns were used to characterize the structure of the thin films. The transparency of the thin film was tested by UV-Vis transmittance measurements. The energy transfer dynamic was investigated by time-resolved spectroscopy and photoluminescence measurements

ARSENIC REMOVAL FROM GROUND WATER : RESEARCHES AND PRACTICAL IMPLEMENTATION CONDUCTED AT INSTITUTE OF CHEMISTRY, VIETNAMESE ACADEMY OF SCIENCE AND TECHNOLOGY

Joint Research on Environmental Science and Technology for the Eart

Determinants of electronic word of mouth in the restaurant industry: An evidence from Vietnam

The food and beverage industry in Vietnam has developed dramatically, resulting in a highly competitive market. To win the competition, the restaurant managers not only strive to increase customer satisfaction but also create customers’ positive electronic Word-Of-Mouth (eWOM). This study aims to investigate the relationship between customer satisfaction, customer trust, customer loyalty, and eWOM. The quantitative method was implemented to examine the hypotheses in the research model. Data were collected from Ho Chi Minh City respondents using a convenient sampling method. Self-administrated questionnaires were delivered via the Internet for data collection. After data screening, 299 responses were qualified for analysis. Partial Least Squares Structural Equation Modeling (PLS-SEM) analysis was employed by SmartPLS software version 3.0. The measurement model test showed that one item of customer trust has a factor loading of less than 0.7 as a result, this item was removed from the research model. The structural model evaluation revealed the highly predictive accuracy of the model as all dependent variables have R2 values above 0.5. A bootstrapping test with 5,000 subsamples also showed that customer loyalty significantly influences eWOM, but customer trust does not. Customer satisfaction directly and significantly impacts customer trust and loyalty but has little influence on eWOM. However, the relationship between customer satisfaction and eWOM is significant without the presence of customer loyalty and trust. The indirect effect test also determines the full mediation role of customer loyalty in the relationship between customer satisfaction and eWOM