STUDENTS’ PERCEPTIONS OF ACTIVE LEARNING IN INTRODUCTION TO LITERATURE

There is a growing interest in active learning as a shift from traditional lecturing to improving student-centred learning in English. However, in the Vietnamese context of teaching and learning at tertiary levels, little research has examined students’ perceptions of active learning in approaching Introduction to Literature. This study is therefore aimed to look into this area of interest. Participants in this study were 94 students from junior and seniors majoring in high-quality programs at a university in the Mekong Delta. Data were collected from questionnaires. The findings show that students had positive perceptions of active learning in studying this course. Implications for teaching and learning this course are made.  Article visualizations

Evaluation Of Agronomic Traits And Adaptation Of Some Promising Salt Tolerant Rice Lines/Varieties Growing In The Coastal Areas In Thanh Hoa Province, Vietnam

Rice (Oryza sativa L.) is the main food in Vietnam and plays an important role in economic activity in this country. However, rice yield and growing areas are adversely influenced by the threats of the devastation caused by the rise of sea level. This study aimed to evaluate the salt effects in field experiments of 19 promising salt tolerance rice lines/varieties carrying QTL/Saltol, which were selected from the BC2F5 breeding combination between FL479 and Bac Thom 7 (BC7). The field experiments were conducted in two consecutive seasons at three saline-affected rice growing areas, including Nga Son, Hoang Hoa and Quang Xuong districts, Thanh Hoa province. The results showed that among those promising rice lines, the HL15 line had the best yield components in all experimented sites, and good agronomic traits with short plant height and shorter growth duration than the BC7 variety (115-117 days) in the spring season and 102-103 days in the summer season, respectively. All tested had the same level of pest resistance/infection as the control variety BT7 under production conditions using pesticides including HL1, HL13 and HL15, which were mildly infected with the bacterial leaf blight, while HL15 variety showed high resistance to pests and diseases. Moreover, the HL2, HL15 and HL19 lines had scored 3, equivalent to FL478 (tolerant), and the survival rate was over 85% compared with the control variety. Overall, our findings showed that the promising purebred variety HL15 had a range of good agronomic characteristics, resistance to major pests and diseases, high yield potential and salinity tolerance of 6‰. The HL15 variety was renamed as SHPT15 and continued to conduct procedures to recognize it as a new rice variety

The impacts of lead recycling activities to human health and environment in Dong Mai craft village, Hung Yen, Vietnam

Lead (Pb) recycling activities in Dong Mai village, Chi Dao commune, Van Lam district, Hung Yen province have been taking place for more than 30 years. The development of recycling activities contributed to the improvement of the local economics. However, along with economic development, Dong Mai craft village is facing to serious pollution. Soil, air and water polluted by lead (Pb) caused food containing Pb at higher levels than allowed limit from 20 to 40 times. The pollution had the bad effect on human health in this village. The investigation results showed that 100 % of employee who participated on melting lead and 63.5 % of local children were poisoned by Pb. Besides, the local people got diseases relating to skin, eyes, etc. This situation requires the provincial authorities to find immediate solutions to reduce the impacts of Pb recycling activities to environment and human.Hoạt động tái chế chì của thôn Đông Mai, xã Chỉ Đạo, huyện Văn Lâm, tỉnh Hưng Yên đã diễn ra hơn 30 năm nay. Sự phát triển của nghề tái chế đã làm góp phần cải thiện kinh tế của địa phương. Tuy nhiên, cùng với sự phát triển kinh tế, làng nghề Đông Mai đã và đang đối mặt với ô nhiễm môi trường nghiêm trọng. Môi trường đất, nước không khí bị ô nhiễm bởi chì (Pb) dẫn đến thực phẩm nhiễm chì ở hàm lượng cao hơn mức cho phép từ 20- 40 lần. Sự ô nhiễm gây ra những ảnh hưởng xấu tới sức khỏe của người dân làng nghề. Kết quả điều tra cho thấy 100% công nhân tham gia nấu chì và 63.5% trẻ em địa phương bị nhiễm độc chì. Bên cạnh đó, người dân địa phương còn bị mắc của các loại bệnh ngoài da, bệnh về mắt, …. Tình trạng này đòi hỏi chính quyền địa phương phải tìm ra giải pháp khẩn cấp để giảm thiểu tác động của những hoạt động tái chế chì tới môi trường và con người

Factors affecting the creativity of high school students

Creativity is a vital personality quality of each individual. Each person has their potential for creativity, and it can be nurtured and developed in an appropriate and safe environment. The purpose of the study was to find out which factors from schools and students themselves affect creativity as well as the association between creativity and age, gender and giftedness of students, which then a basis to adjust and establish appropriate methods from schools, families, and students themselves to develop elements and their creativity. The study was conducted on 108 high school students in three grades from giftedness and non-giftedness schools. The data was collected through a survey method using a self-constructed questionnaire and drawing creativity test TCT-DP to determine students' creativity levels and personal information. The study's finding, which uses mathematical methods and one-way analysis of variance, reveals that factors affecting elements and creativity level are objective factors including education environment from school; behavior of teachers, and subjective factors including interests, perspectives, and thoughts of students. It was also found that there were no significant differences in the components of creativity and creativity among students in different grades, gender, and groups of giftedness schools

A Study on Factors Impacting on Profitability: The Case of Vietnam

This study is conducted to investigate factors influencing the profitability of the Vietnamese food processing firms. Data was collected from audited financial statements from listed food processing firms on the Vietnam Stock Exchange. Panel regression model was applied in this study (PLS). The testing methods used in this research were Pearson model; Modified Wald Test, Wooldridge test (for autocorreclation in panel data), Hausman model, especially the relationship between FEM and REM as well as Multicollinearity test based on VIF coeficient. The results shows that DR, SDR and LDR have negative impacts on profitability. In contrast, TDTELT have positive impacts on the profitability. FATA and SIZE impact return on asset (ROA) without statistical significance. SIZE has positive impact on return on equity (ROE) while it impacts negatively on profit margin (PM). Moreover, AGE, GDP growth, and inflation do not have impact on profitability. Keywords: Factors, Return on assets, Food processing firms, Vietnam DOI: 10.7176/RJFA/11-10-07 Publication date:May 31st 202

DẪN LIỆU MỚI VỀ MÔI TRƯỜNG NƯỚC VÀ SINH VẬT TRONG CÁC HANG NGẦM VÀ HỒ NƯỚC MẶN KHU VỰC VỊNH HẠ LONG, CÁT BÀ

Submerged caves and saltwater lakes are 2 common habitat types in Ha Long and Cat Ba. However, depending on many different reasons so far they have been poorly studied both on environmental and biological characteristics. The initial results on environment and biological communities in 3 submerged caves (Hang Sang, Hang Toi, Qua Bang) and 3 saltwater lakes (Ang Dau Be, Ang Du, Ang Qua Bang) showed that: status of water environment was different among lakes, especially in the closed lake as Ang Du where salinity was low (9‰), while salinity in the lakes connected to the sea was equal to marine environment (23 - 27‰). Concentration of dissolved oxygen (DO) in saltwater lakes was high from 7.63 - 9.03 mg/L and higher than that in submerged caves and surrounding marine environment. Physical and chemical factors of water in the submerged caves were equivalent to the marine environment because these caves are connected to the sea and water regularly goes in and out according to tidal fluctuation. Organism communities in the submerged caves were abundant with over 142 species being found. The popular groups, sponge and soft coral, were distributed along the length of the caves. Several species with high economic value were commonly observed in the caves, including stone crab Myomenippe hardwickii, flower crab Portunus pelagicus, cone snails Trochus pyramis, shoemaker spinefoot Siganus sutor, snapper Lutjanus russelii ... Species that permanently live in cave were not detected. In the lakes where water is well exchanged to the sea, coral reefs were found and they formed a narrow reef around the lake. Sandy bars often appeared around the lake at the depth of 0.5 - 2 m, containing specialty species as phi (Sanguinolaria diphos), snout otter clam (Lutraria rhynchaena), sea cucumbers with high density (Ang Dau Be, Ang Qua Bang). There was no coral reef in the closed lake (Ang Du) because of low salinity. In this lake, stratification of temperature and salinity led to temperature on surface lower than that on bottom from 30C to 60C, this phenomenon is unusual.Hang ngầm và hồ nước mặn là 2 dạng sinh cảnh khá phổ biến ở Hạ Long và Cát Bà, do nhiều nguyên nhân khác nhau đến nay chúng rất ít được quan tâm nghiên cứu. Các kết quả nghiên cứu bước đầu về môi trường và quần xã sinh vật trong 3 hang ngầm (Hang Sáng, Hang Tối, Hang Quả Bàng) và 3 hồ nước mặn (Áng Đầu Bê, Áng Dù, Áng Quả Bàng) cho thấy: Môi trường nước có sự khác biệt giữa các hồ, đặc biệt là trong hồ kín như Áng Dù có độ muối thấp (9‰), trong khi các hồ có cửa thông với biển có độ muối gần tương đương với môi trường ngoài (23 - 27‰). Hàm lượng chất khí hòa tan như DO trong các hồ nước mặn khá cao từ 7,63 - 9,03 mg/l, cao hơn trong hang ngầm và cao hơn ở môi trường biển xung quanh. Các yếu tố vật lý và hóa học trong môi trường nước tại các hang ngầm gần tương đương với môi trường bên ngoài do có các hang ngầm đều thông với biển và có nước chảy thường xuyên theo sự lên xuống của thủy triều. Quần xã sinh vật trong các hang khá phong phú với trên 142 loài được tìm thấy, phổ biến nhất là hải miên và san hô mềm, chúng phân bố dọc chiều dài hang. Có một số loài có giá trị kinh tế cao thường gặp trong hang là Cù kì Myomenippe hardwickii, ghẹ Portunus pelagicus, ốc nón Trochus pyramis, cá dìa Siganus sutor, cá hồng Lutjanus russellii ... Chưa phát hiện thấy các loài chuyên biệt sống cố định trong hang. Ở các hồ nước lưu thông với môi trường bên ngoài có sự xuất hiện của rạn san hô, chúng tạo thành một dải hẹp bao quanh hồ. Các bãi cát thường xuất hiện quanh hồ ở độ sâu 0,5 - 2 m có các loài đặc sản như phi phi, tu hài, hải sâm với mật độ khá cao (Áng Đầu Bê, Áng Quả Bàng). Trong áng kín không có rạn san hô do nước có độ muối thấp, có sự phân tầng của nhiệt độ và độ muối làm cho nhiệt độ ở tầng mặt thấp hơn tầng đáy 3 - 60C đây là hiện tượng bất thường ở các hồ này

Factors affecting consumer’s bargaining behavior: The case of fashionable clothing

Shopping is one of the current trends of the Vietnamese. According to Nielsen’s research results about consumer confidence in the fourth quarter of 2017, more than half of Vietnamese people (51%) use their spare money to buy new clothes at modern business models such as supermarkets, shopping centers, or at very traditional models like street vendors and wet markets where haggling (also known as bargaining) is considered as a common habit for Vietnamese. This is due to business characteristics from a very long time ago in Viet Nam. The bargaining behavior is not so hard to recognize in shopping. Even now, a large part of foreign tourists is familiar with the bargaining culture. This study aimed to discover bargaining behavior, the factors affecting such a behavior in buying fashionable clothing of the consumers in Ho Chi Minh City, and to consider whether the differences in bargaining behavior exist among different groups of gender, age, and income. The research was conducted using mixed methods concluding qualitative research (in-depth interview and focus group) and quantitative one (survey). The results showed that Attitude towards bargaining, Perceived behavioral control, Interest in bargaining affect Consumer’s bargaining behavior when buying fashionable clothes. Results were validated in Ho Chi Minh City context, and some conclusions were also presented

Chemical Components of Essential Oils From the Leaves of Seven Species Belonging to Rutaceae Family from Binh Chau-Phuoc Buu Nature Reserve, Vietnam

Several plant species of the Rutaceae family are medicinal plants, oil bearing and food crops. To provide more information for utilization of some species of this family in Binh Chau-Phuoc Buu Nature Reserve, we extracted essential oils from the leaves of seven species of the Rutaceae family: Acronychia pedunculata (L.) Miq., Atalantia citroides Pierre ex Guillaumin, Clausena excavata Burm.f., Glycosmis pentaphylla (Retz.) DC., Luvunga scandens (Roxb.) Buch.-Ham. ex Wight & Arn, Melicope pteleifolia (Champ. ex Benth.) T.G. Hartley, and Micromelum sp., via hydrodistillation, and identified their components using GC/MS analysis. A total of 60 compounds were identified from essential oils of seven species. The main components of the essential oils isolated from five species, including A. pedunculata, C. excavata, M. pteleifolia, G. pentaphylla, and Micromelum sp., were caryophyllene (57.63% and 55.41% in A. pedunculata and C. excavata, respectively), 1,9-decadiyne (32.59%, M. pteleifolia), β-ocimene (23.10%, G. pentaphylla), and 3-carene (58.03%, Micromelum sp.). Additionally, this study revealed the chemical composition of essential oils of L. scandens and A. citroides for the first time. The main constituent of A. citroides was 7-oxabicyclo[4.1.0] heptane, 3-oxiranyl- (53.91%) and that of L. scandens was caryophyllene (34.66%). These findings provide the basis for further application of these species in medicine

Partial food systems baseline assessment at the Vietnam benchmark sites

Using data collected from a cross-sectional study in Moc Chau, Dong Anh and Cau Giay districts in Vietnam, this report aims to elucidate specific components of local Vietnamese food systems along a rural to urban transect focusing specifically on (i) diets, (ii) nutrition status (anthropometry), (iii) consumer behavior, (iv) food environment, and (v) food flows