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

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 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.

An experiment was conducted to evaluate the interactive influences of dietary ME and lysine on growth of H’mong broilers from 0 to 28 days of age. The study was in a 3x3 two-factorial design, with the first factor being 3 levels of ME (3,000; 3,100 and 3,200 kcal/kg of feed) and the second one being 3 levels of lysine (1.1%; 1.0% and 0.9%), and 4 replicates with 6 broilers for each. Two hundreds and sixteen broilers were placed into 36 bamboo floor pens (6 birds/pen). The diets were formatted from corn yellow, soybean meal, soybean oil, DCP, shell, mineral and vitamin premixes, salt, and some of synthetic essential amino acids. Chicks were fed ad libitum and provided water all of time. The feeding trial was lasted for 4 weeks. The result indicated that the ME 3,000 kcal/kg of feed and lysine 1.1% diet resulted in the most efficient feed conversion ratio.

This article illustrates the lecturer’s experience of integrating activities in teaching a literary work, particularly a story, to build critical thinking ability for students when learning British literature based on Bloom’s taxonomy. At first, six levels of Bloom’s taxonomy were introduced, explained to 65 junior students majoring in English. Then, the sample questions in six levels of the Vietnamese folk tale “Tam Cam” were given to students as an illustration of applying to make questions in six levels relating to the story. To develop critical thinking skill, students themselves experienced different classroom activities relating to questions in 6 levels and discussedissues through reading and analyzing one British work in their undergraduate program. It is the story “The lion, the witch and the wardrobe” by Clive Staples Lewis. The students reacted positively to questions to develop critical thinking when learning this work and most of them want more classroom practice in order to  strengthen their ability to think critically. This piece of writing also expresses the lecturer’s reflection in developing critical thinking for students in teaching British literature, especially stories, using questions based on Bloom’s taxonomy.

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.

Using the research method of overview, this article presents an overview of studies on culture in the  sustainable development in the Mekong Delta region of Viet Nam from 1975 to present. Research results show that the works in Viet Nam from 1975 to present mainly emphasize on ecological, economic, political and social issues; however, the issue of culture in the Mekong Delta sustainable development has not been paid much attention to in-depth research, so there has not been a separate project to systematically assess the current situation of cultural impacts of the Mekong Delta, as well as ideas and solutions to improve the effectiveness of the positive impact of culture in sustainable development in the Mekong Delta region. On the basis of identifying the achieved achievements, the article proposes research prospects in terms of theory and practice of cultural issues in sustainable development in the Mekong Delta region.