TẠP CHÍ KHOA HỌC TRƯỜNG ĐẠI HỌC TRÀ VINH

This paper presents an integrated-skill approach of using oral presentations as an interactive teaching tool innon-English major classrooms. This paper has the following sections: (1) an introduction of the context of teaching and learning English and the factors affecting students’ speaking ability in Vietnam and in several other countries; (2) a presentation of the benefits of integrating oral presentation in the classroom; and (3) suggestions to English as a Foreign Language (EFL) teachers to apply this approach effectively. The researcher applied this approach to two groups of medical students. The result shows that four main factors, which affect students’ speaking ability are a lack of topical knowledge, low selfesteem, limited chances of practice and theoveruse of mother tongue. By giving presentations, students have a higher level of confidence, speak correctly, use more vocabulary, and develop other language skills as well as soft-skills. However, teachers need to instructstudents clearly, reduce pressure on student grades and give effective individual feedback. Furthermore, students need encouragement to create a dynamic learning environment. It is hoped that the pedagogical ideas presented in this paper can help teachers effectively employ oral presentations as a means of improving students’ English-speaking ability.

The research was conducted to determine the effects of psychological capital on the personality on hotel staff working in an engagement setting in Ho Chi Minh City, Viet Nam. Data was collected by surveying 378 staffs who are working in hotels in Ho Chi Minh City which are rated 3 stars or more. Descriptive analysis, exploratory factor analysis, and linear regression analysis were used with SPSS 20 statistical package for data analysis. The results show that all psychological capital factors, including hope, efficacy, resilience and optimism have hadpositive impacts on hotel staffs’ work ethic. The study also demonstrated the effects of personality on the hotel staffs’ engagement with their work. The research outcomes suggest some managerial solutions to management problems by adapting psychological capital data and to take into consideration the personality of staff to enhance employees  working in engagement settings in Ho Chi Minh City.

Glossogobius aureus Akihito & Meguro, 1975 is a fish with good flesh, which has brought about high economic value. The study on feeding habit and feed  spectrum of G. aureus was conducted from January to December 2013 at the coastal area of Ben Tre province. The results have showed that the mouth of thisfish is wide, tongue is bilobate, teeth on faws develop well. The gill rakers are sparse, short and hard. The esophagus and the intestine are short, the stomach and intestinal walls are thick. The Relative Length Gut index (RLG) of G. aureus was less than 1. The results also indicated that G. Aureus are fed mainly on small fish (46.3%) and crustaceans (40.5%). The result showed that G. aureus is the carnivorous species

The development of techniques such as instant controlled pressure drop, nanotechnology, pulsed electric field and ultrasound treatment have spanned over  many years and culminate today as an effervescent research topic in the food processing field. Mainly striving to improve the efficiency of our current processes and to steer food processing towards a greener, more sustainable state, most of these innovative methods compile promising results when combined with conventional techniques. In the face of undeniable environmental challenges and growing demand from consumers, sustainability and economic values should come hand in hand to consider a responsible future for the food industry. Thus, applications of the presented technologies each have demonstrated lower energy and water consumption, lower processing times and improved end-product quality.

The study aimed to assess the variation of surface water quality and evaluate the monitoring frequency at threecontinuous monitoring stations on the Tien river (MT1 station) and Hau river (MH1 and MH2 station) over a 10-year period (2009-2018), with a monitoring frequency of 12 times per year (monthly). The water quality variables comprised of temperature (oC), pH, dissolved oxygen (DO, mg/L), total suspended solids (TSS, mg/L), nitrate (N-NO- 3 , mg/L), orthophosphate (P-PO3 4- mg/L), chemical oxygen demand (COD, mg/L), and coliforms (MPN/100 mL). The individual water quality parameters were assessed by comparison with National Technical Regulation on surface water quality (QCVN 08-MT: 2015/BTNMT). Monitoring frequency was evaluatedusing Cluster Analysis (CA). The findings revealed that surface water on both Tien and Hau rivers was perpetually polluted with suspended solids, organic matter, nutrients, and microorganisms. The CA identified that the frequencies of current water monitoring could be reduced from 12 times to 5 times per year, resulting in a 58% reduction in monitoring costs. Future study should focus on evaluating water quality parameters toencompass all water quality characteristics in the Tien and Hau rivers. International collaboration with countries that impact the river before flowing into Vietnam in water management should be enhanced to solve continuing water problems.

This study evaluated the current condition of the preservation and promotion of cultural values of Khmer folk music. The study used sociological investigation methods, in-depth interviews, and ethnographic fieldwork methods. The results showed that the preservation and promotion of the cultural values of Khmer folk musicin the south of Vietnam were mainly done spontaneously, via oral transmission between artisans and artists. Even though research into Khmer folk music, introduction of outsiders to Khmer folk music, and training have begun to be collected and researched, it is still very limited.

Hungarian goose production and gene conservation practices have been a tradition in Hungary for several centuries. The old Hungarian geese can only be effectively maintained if the national programs can identify economic uses of the breed. This study aimed to examine the potential use of the Hungarian landrace goose (HL) either as a purebred or crossbred with the Hungarian Upgraded breed (HU). Crossbred offspring were produced by HL ganders and HU layers, as egg production of HL layers is very low. Reproduction traits (egg production, fertility and hatchability) of parent stocks, body weight gain, feed consumption and slaughter values (slaughter loss, breast and thigh weight and proportions) and of offspring were measured. The results showed that fertility in the crossbred geese was insignificant compared to the fertility of HL purebreds, while hatchability of crossbreds was higher than that of purebred HL or HU. HL offspring had significantly lower bodyweight and weight gain, and a higher feed conversion rate than HU. The proportion of valuable meat parts (breast and thigh) was the highest in HU while weight in slaughter loss was also the highest in HU. In terms of body weight, feed conversion rate and slaughter properties, crossbred offspring showed intermediate  inheritance. HL is recommended for crossbreeding with HU breeds and their offspring should be reared under free-range keeping conditions.

The factors influencing students’ decisions during the selection of a subject major is important for the  development of colleges in Vietnam. This study aims to address the factors impacting the choices of students to select the ‘Hotel Management’ major, at Kien Giang College, Vietnam, and analyze the influence level of each factor. The results confirm four factors that impact the decisions of students studying the major in Hotel Management at Kien Giang College, which are: (1) Hobbies, previously acquired skills, and the availability of jobs in the current job market; (2) The prestige of the college; (3) The benefit of studying; and (4) Sponsor policies and the opportunity to enhance the students’ livelihoods. Based on the outcome, this study also provides further suggestions to attract more students to major in hotel management at Kien Giang Collegein the future. 

The concentrations of heavy metals in soil and rice plants around the landfill area in Dong Thang commune, Co Do District, Can Tho City, Viet Nam needed to be assessed for environmental pollution. Soil samples were collected from four sites (three sites S1, S2, S3 near and one site S4 far away from the landfill area) at soil depths of 0 to 25 and 25 to 50 cm. The rice and soil samples were simultaneously collected at the same locations for analysis of heavy metals. The heavy metals Mn, Zn, Cu, Cr, Ni, Pb and Cd were analyzed using atomic absorption spectroscopy. Six heavy metals including Mn, Zn, Cu, Cr, Ni, and Pb were detected and ranged from 12.3 to 291.0 mg/L for the top soil and 11.2 to 370.0 mg/L for 25 to 50 cm soil layer. However,  concentrations of Ni, Cu, and Pb in soil tended to decrease while Mn, Zn and Cr tended to increase with an increase of soil depth near the landfill. A similar tendency of heavy metal concentration with depth was found at S4 except for Cu. The decreasing order of the selected heavy metals concentrations in the two soil layers at near the landfill was Mn>Zn>Ni>Cr>Cu>Pb and these concentrations of heavy metals were within the limits of QCVN 03-MT: 2015/BTNMT and Canadian Council of Ministers of the Environment (CCME, 2007). The result of the bioaccumulation factor (BAF) in rice plants showed that the selected heavy metals were accumulated more in the root rather than the stem-leaf and grain. Mn was accumulated dominantly in both root and stemleaf, while Zn, Cu, and Pb only accumulated in the root. Thus, result of this study suggests that is essential to collect and treat the heavy metals in the leachate properly to minimize the distribution of heavy metals to the paddy soil environment.

This study explores English as a foreign language students’ challenges and investigates solutions for students to improve their public speaking skills at a university campus in the South of Vietnam. A descriptive mixed-method approach is used in this investigation allowing data to be quantitatively and qualitatively collected through questionnaires and interviews. The findings showed that English as a foreign language students faced several problems in public speaking as well as a lack of confidence. Many methods to improve public speaking skills were found, including making presentations, creating video blogs, and implementing circumlocution, methods that helped students increase their confidence in speaking and using effective body language. The findings of this study can be applied to help students overcome their challenges with public speaking.