This study was conducted to investigate factors that affected the free radicals concentration generated in aqueous solution by cold plasma technology. The factors such as solution flow through electrodes (from 1 to 5 L/min), voltage (from 12 kV to 16 kV), plasma irradiation time (from 10 to 60 min), organic compounds and water types were studied. In addition, the study also investigated the effects of indirect plasma and air flow rate on the free radical concentration. The results showed that the concentration of free radical decreased from 7.57×10-2 to 5.41×10-2 mM when increasing water flow rate from 1 to 5 L/min. Concentration of free radical increased from 6.89×10-2 to 7.77×10-2 mM when increasing the voltage from 12 to16 kV. Experiment data also showed that increasing irradiation time (10 to 60 min) would also increase concentration of free radical (7.52×10-2 to 8.89×10-2 mM). The highest concentration of free radical was obtained at condition of 1 L/min, 16 kV and 60 min irradiation. Furthermore, the study also found that the presence of organic compounds also strongly affected the free radical concentration.

Mapping flood extent plays an important role in flood preventing activity, however, mapping flood using remote sensing traditional approaches has many limitations such as data sources and processing time. The study was conducted to assess the applicability of the Google Earth Engine platform in mapping a flood extent in the Mekong Delta from 2015-2017. The study has developed the threshold value and change detection approach to determine the flood extent using 20 Sentinel-1 images during the flooding season in 2015 and 2017. In comparison to 2015 and 2016, the results showed that the 2017 flood extent was the largest with 900,000 hectares in October. The analysed result showed that there was high correlation between monthly flooded area and water level measured at Tan Chau (Tien River) and Chau Doc stations (Hau River). This first study showed promises of applying Sentinel-1 data for flood monitoring in the Mekong Delta.

Discharging improperly untreated distillery waste water from sugarcane molasses-based ethanol industries may greatly cause an adverse affect on water and aquatic living organisms. The study was aimed to isolate a number of endophytic bacteria from rice, corn, sesame and soybean grains to reduce color of the molasses after ethanol fermentation. Liquid minimal salt medium containing 30% molasses-based distillery wastewater (MBDW) was used to quantify the decolorization ability of isolated strains. The remained color of MBDW in the liquid culture medium was determined by spectrophotometer at 650 nm. The results showed that a total of 39 bacterial strains were isolated from 4 kinds of cereal grains. Ten out of 39 isolates from rice and corn grains showed their high capacity of decolorization. Especially, G4 and G5 strains decolorized up to 30%, and 25.3%, respectively of the MBDW in liquid culture medium after three days of incubation. The results of an acessment for decolourization efficacy of three microbial by-products fermented individually with G4, G5 strains and endophytic microbial community from rice grains showed that after two consecutive treatment stages, the decolorization efficacy of these three microbial by-products was very high (60.2%, 68.5% and 79.5%, respectively) and significantly higher than that of the control treatment (only with distilled water) (34%). Basing on the 16S-rRNA gene sequence, G4 and G5 strains were indentified relatively to belong to the genus of Enterococcus and they have the closest relationship with Enterococcus italicus G4 and Enterococcus italicus G5, respectively.

The investigation was conducted from July 2016 to May 2017 at Hoa An wetland, Phung Hiep district, Hau Giang province. The vascular plants were collected in six biotopes through standard square and investigation line sampling method. The list of vascular plants was constructed. There were 56 species belonging to 51 genera of 38 families in 2 phyla of the vascular plants. In the term of species diversity, the genera, family and the average of genera in family index of the vascular plants system at the Hoa An wetland were 1,1, 1,47 and 1,34, respectively. Of the 7 existing groups of life forms, the grass group has the highest percentage. There were 55 useful plants found, of which medicinal plants have the highest number of species and one species was listed for conservation by Vietnam Red Book (2007). In six biotopes, each biotopes has specific plant groups.

Water-saving irrigation is one of technical solutions to improve production efficiency and to reduce effectively water usage for agriculture production. Raising awareness of farmers and expanding areas of water-saving irrigation practices are trends in agriculture development, especially in low-lying coastal areas where accessing to freshwater resources is of the main problems. The study is aimed to identify factors influencing local farmers’ adoption of using water-saving irrigation techniques for upland crop production in Tra Vinh, a coastal province along the East Sea of the Vietnamese Mekong Delta. The livelihood framework developed by the Department for International Development (DFID) and binary logistic regression were used to analyze the relationship between dependent and independent variables of five household’s capitals based on data collected from 225 local farmers interviewed in districts of Cau Ngang, Tra Cu and Duyen Hai. Lacks of information on efficiency of the water-saving irrigation techniques in the local areas is the factor influencing local farmers’ adoption of such techniques. This result is useful information to support local government to develop water-saving irrigation practices for upland crop production.

The cohomology of the Steenrod algebra is one of the most important objects in calculating the stable homotopy group of spheres through the Adams range. Algebraic homomorphism is considered an algebraic form of the geometric homomorphism on the Adams range. It has the ability to detect many non-trivial elements in the subject matter of algebraic Steenrod. Some authors studied this matter on field of characteristic 2, however it has not been studied much on field of characteristic odd prime p. This article is aimed to build the Singer transfer rank 3 on field of characteristic odd prime p and some examples on field of characteristic 3.

Prime ideals and nilpotent ideals are among the important topics in ring theory. Prime submodules and nilpotent submodules are generalizations of the above concepts in module theory. In this paper, images and inverse images of prime submodules, images and inverse images of nilpotent submodules of a module on a noncommutative ring are studied. Conditions to guarantee that images and inverse images of prime submodules are prime submodules, images and inverse images of nilpotent submodules are also nilpotent submodules are given and proved.

In this paper, stability conditions of solutions to a parametric optimal control problem with linear state equation are studied. Sufficient conditions for Hölder calm continuity of solution map to this problem are established. In addition, an application of obtained results to a particular case of the underlying problems is also discussed.

This article proposes a time series model to interpolate historical data and use them to forecast for future. This model is built based on the automatic algorithms in cluster analysis and performed by Matlab procedures. They are the algorithm to determine the suitable number of clusters, the elements in each cluster and the relationship of each element with established clusters. The proposed model’s convenience and efficiency were tested by by many benchmarks and sets of real data. These numerical examples show the advantages of the proposed model in comparison with existing models and its effectiveness in practical applications.

This study is aimed to evaluate antioxidant, anti-inflammatory and antibacterial activities of the methanolic leaf extract of Premna serratifolia (L.). The results showed that the methanolic leaf extract displayed good antioxidant activities for DPPH, ABTS•+ and reducing power methods. In addition, this extract gave high antimicrobial effect against six bacterial strains including: Escherichia coli, Samonella typhimurium, Listeria innocua, Staphylococcus aureus, Pseudomonas aeruginosa and Vibrio parahaemolyticus. However, it had no effectiveness when testing with Bacillus cereus and Enterobacter cloacae. Besides, the methanolic leaf extract of Premna serratifolia (L.) possessed very high anti-inflammatory activity, with IC50 = 4.33±0.52 µg/mL. Total phenolic and total flavonoid contents were 59.55±0.22 mg GAE/g and 609.62±15.21 mg QE/g, respectively. These findings indicated that Premna serratifolia (L.) is a very potential herb containing lots of natural antioxidant and antibacterial compounds.

The study was conducted to evaluate the hatching rate  of Muscovy Duck type R31 as effects of different egg stocking times. It was a completely randomized design with 3 treatments corresponding to time keeping egg and 4 replications. The treatments were: NT1: keeping egg on 1 to 3 days, NT2: keeping egg 4 to 5 days, NT3: keeping egg 6 to 7 days. The results showed that the unembtyo rate of NT1, 2, 3 were 10.66, 15.88, 12.30%, respectively. Besides, the embryo death rates were significantly different between treatments (P

The aim of this study was to screen and isolate for the keratin degrading heat-tolerant bacteria from animal fur-poultry feathers. Fifty-four aerobic heat-resistant bacteria strains were isolated from eighteen hair dumping soil samples and two waste water samples; were collected from slaughterhouses in three provinces of Can Tho, Vinh Long and Kien Giang. Fifty-four strains were able to grow and degraded keratin at 45oC; Eighteen strains had the capacity of development at 50oC and five strains had the ability to survive at 55oC. These samples were serially diluted and plated on the feather-meal containing medium for isolating and screening of efficient hair-degrading bacteria. Most of the strains isolated were white or light yellow color colonies, 23 rod-shapes and 31 sphere-shapes (42 isolates were Gram–Stain negative and 12 isolates were Gram–Stain positive). The isolation designated KG2 revealed significant difference among differential at 55oC with the highest rates 57.91% respectively in the feather-degrading ability. In fur animal medium they showed of 35.06% degradation. 16S rRNA genesequences indicated the isolate KG2 was related to Bacillus megaterium AIMST 3.Ei.1 (with 97% similarity).

Streptomyces albaduncus was shown capable of reducing the Fusarium basal rot of shallot (Allium cepa var. ascalonicum) caused by Fusarium oxysporum. This study aims at identifying the optimal values of different chemical and physical factors directly influencing the sporulation process of the actinomycete, which serves as a basis to produce a bio-fungicide to control the disease. The optimum multifactorial experiments were designed using the Plackett-Burman matrix. Results showed that the initial moisture content, culture duration and CaCO3 content had the strongest influences on the sporulation process. These three factors were subsequently optimized using the Response Surface Methodology (RSM) combined with the Central Composite Design (CCD). Optimal values of the initial moisture content, culture duration and CaCO3 were 54%v/w, 3.6 days and 3 g, respectively. These values formed a model which was tested in a bio-assay. An amount of 4,8x109 spores/g was obtained in that assay. The Plackett-Burman matrix combined with the RSM-CCD is therefore a useful tool to identify optimal values of different factors influencing microbial sporulation processes.

Phosphate is one of the major elements, strongly affecting on the agricultural production and phosphate solubilizing fungi plays a very important role in increasing the bioavailability of soil phosphates for plants. Aim of this study was to isolate and identify a number of phosphate solubilizing fungus from paddy rice soil applied only with organic fertilizer and with alternate wetting drying methodology of irrigation under net house conditions. NBRIP medium was used for isolation and evaluation of phosphate solubilizing ability. Soluble phosphate concentration was determined by a method of colorimetric determination of molybdate. Results showed that 37 phosphate solubilizing fungi were isolated from 7 soil samples. Among them, B1 and B10 solubilized phosphate up to 2104 mg.L-1 và 2618 mg.L-1 after 3 and 4 days of incubation, respectively. The optimum conditions for the B1 and B10 releasing soluble phosphate from Ca3(PO4)2 were at temperature, 25oC-35oC; initial pH, 5.0-7.0, respectively. These two strains had a good ability in phosphate solubilization from other forms of insoluble phosphorous source, AlPO4 and FePO4. Basing on the ITS region, B1 and B10 strains were indentified relatively as Penicillium funiculosum B1 and Aspergillus tubingensis B10, respectively. Therefore, these two fungal strains hold an important role and great potential for biofertilizers to enhance soil fertility and promote plant growth.

Two conditions of chilled temperature (0-4°C) and room temperature (18-20°C) were studied to form gel of fish cakes prepared from three kinds of minced redfish (fresh mince, one months frozen mince, and six months frozen mince, abbreviated respectively to NLT, BQ1, and BQ6). The results of properties of fish cakes were showed. The gel forming at 18-20°C brought the lowest yield of cooking of fish cake made from frozen minced redfish BQ6. The forming temperature did not significantly affect the whiteness, moisture content and lipid content of fish cake, but made differences in pH and phospholipid content of fish cake from frozen minced redfish BQ1. Although the forming temperatures had indicated no remarkable difference in sensory scores of fish cake elasticity (77-83 points, 68-71 points, and 64-67 points were sensory scores of fish cake from the minced redfish NLT, BQ1, and BQ6, respectively); but the analysis results from rheological equipment showed that forming temperature at 18-20°C brought higher shear force and breaking force values of fish cake from mince NLT than the forming at 0-4°C

This study was conducted to compare the disease-reducing effects of the six antagonistic bacteria, i.e., Bacillus aerophilus HG33, B. pumilus TG71, B. stratospheric AG621, B. subtilis ST115 and Serratia nematodiphila CT78, against Xanthomonas oryzae pv. oryzae causing rice bacterial leaf blight and to screen for the lowest density of the most effective antagonistic bacterial suspension at which the effects were remained under greenhouse conditions. A standard curve for the densities of the six bacteria was made to prepare bacterial suspensions. Seed soaking with the 107-CFU/mL suspensions of B. aerophilus HG33, B. subtilis ST115 and S. nematodiphila CT78 and soil drenching with those of B. pumilus TG71, B. safensis AG131 and B. stratosphericus AG62 were used in the experiments. Results from the two independent replications of this experiment showed that B. stratosphericus AG62 provided the strongest effects among the six bacteria. Therefore, lower suspension densities of this bacterium were tested including 106, 105 and 104 CFU/mL. Soil drenching with the 106-CFU/mL suspension showed similar effects as those of the 107-CFU/mL suspension at all disease assessment time points (5, 10 and 15 days after inoculation).

The research is aimed to apply cloud removal method on time series MODIS imagery and create MODIS time series images having no cloud dataset in Vinh Long province in 2017. MODIS data are used including MOD09A1 and MOD09Q1 temporal resolutions of 8 days and the spatial resolutions at 500m and 250m in ​​Vinh Long province from 01/01/2016 to 30/12/2017 for cloud cover. The research was applied NDVI time series and unsuppervised classification using the K-means algorithms on ENVI software to remove clouded pixels from MOD09Q1 imgery. The result was created the MODIS cloudless dataset in 2017 (from 01/01/2017 to 01/11/2017) and developed rice cultivation maps in Vinh Long province. The maps were developed before and after classification to be estimated with accuracy assessment of 74.44%. The difference in accuracy assessment betwen before and after cloud removal data that was showed only 2.22%. However, the MODIS imagery with MOD09Q1 data after removal cloud method that can be applied to detect vegetation cover especially for rice cultivation.

The objectives of this study were to evaluate the methods to quantify the N, P and K fertilizer requirement for hybrid maize based on its yield in An Phu - An Giang. The research has been conducted in winter-spring crop in 2014-2015 and 2015 – 2016 included six treatments: (i) added NPKCaMg fertilizer (200N); (ii) without N fertilizer; (iii) without P fertilizer; (iv) without K fertilizer; (v) added NPKCaMg fertilizer (160N);(vi) farmers’ fertilizer practice (FFP). From the principle of SSNM, the method of determining the demand for fertilizer N is based on the recovery efficiency method (REN) with the dose of fertilizer to meet local demand for hybrid maize compared to using agronomic efficiency (AEN). For P and K fertilization, fertilizer demand for hybrid maize by fertilizer demand for the removed to grain and fertilizer demand for the expected grain yield response. The same yield (11-12 tons/ha), the higher demand of NPK fertilizer on the undeposited soil compared to the deposited soil. The capacity to provide soil N fertilizer is 45-50%, for P and K is> 80%, the capacity of NPK supplying from soil was ranked in order K>P>N. Indigenous NPK supplying of the undeposited soil was lower than the deposited soil and ranked in order of 51-80-91%; 54-86-91%, respectively.

The study was aimed to evaluate the capability of K+ and Na+ uptake and surviral rate of 12 potential salt tolerance rice varieties through Yosida media supplemented with 6‰ NaCl using three SSR markers (RM336, RM10793 and RM10825) to identify the salt-tolerant genotypes. The results showed that Chim Vang, Ba Tuc, ST5, Bac Liêu, Lua Soi, Mot Bui Do, TV13 and Trang Tep have the same genotype with Pokali positive control at RM10793 and RM10825 loci (PCR pattern at 85bp for RM10793 and 137bp for RM10825) and ratio of K+/Na+ uptake, respectively. The results showed that these varieties have sharing the similar salt tolerance characteristic to Pokkali variety. In addition, RM336 was the key marker to identify Tai Nguyen Hat Tron, Ba Tuc, ST5, Tai Nguyen, Bac Lieu, Luc Soi, Mot Bui Do, Trang Tep tightly linked to QTL qPH7.1s (showed amplicon of 164 bp as Pokkali) and also showed plant height increasing rate under salt stress treatment at of 6‰. In which, two rice varieties (Lua Soi and Mot Bui Do) presented high salt-tolerant capability in plant hieght increasing rate and K+/Na+ ratio uptake. The study clearly showed that these varieties harboured the same alleles with Pokkali conferring salt tolerance trait in seedlings and served as baseline data for further study on selection of salt tolerance in rice.

The study is aimed to determine the possibility of using pumpkin (Cucurbita peppo) as addition feed for white leg shrimp (Litopenaeus vannamei). The experiment was randomly set up with three replication of four treatments at different amounts of pumpkin addition including (i) 100% commercial pellet without pumpkin addition (control), (ii) commercial pellet in combination with 10% pumpkin addition, (iii) 20% pumpkin addition, and (iv) 30% pumpkin addition. Shrimps averaging 0.57±0.07 g in weight and 4.11±0.21 cm in length were stocked at 150 shrimps/m3 in 200-L tanks with salinity of 15‰. The results of 60 day culture showed that shrimp weight ranged from 10.79 to 12.15 g/shrimp and there was no significant difference between treatments. Survival rates of shrimp harvested (62.2 – 72.2%) were not also significantly different among the treatments. However, the shrimp biomass (1.04 – 1.27 kg/m3) were significantly different among treatments (p

This study was conducted from June to December 2017 by interview 60 fishing households in coastal areas of Kien Giang province (30 households using of trawl nets and 30 households using of gillnets). Key research variables including characteristics of fishermen, fishing gear specifications, fishing grounds, labor and fishing seasons; productivity, financial efficiency, advantages and disadvantages of trawls and gillnets. The results show that the trawlers and gillnets have been operated whole year round in the South-West coastal areas of Vietnam. The average fishing production of the trawlers was 37,330.50 kg/boat/year with the productivity of 845.75 kg/CV/year and then was that of gillnets was 6,445.60 kg/boat/year, the productivity of 304.97 kg/CV/year. The profit of the trawlers was 1,151.4 million VND/boat/year with its benefit and cost ratio of 1.32 times which is much higher than the profit of the gillnets of 342.6 million VND/boat/year with its benefit and cost ratio of 1.01 times. Fishery resources along the coastal areas of Kien Giang province are increasingly declining. Control of fishing acivities and fishing efficiency should be strengthened to ensure sustainable development of fisheries resources.

Rearing system is one of important technical terms in seed production of blood cockle, Anadara granosa in practice. This study evaluated the effects of rearing systems including aeration way and substrate on growth and survival rate of blood cockle in juvenile stage. The experiment consisted of 4 treatments, each with triplications: 1) Muddy substrate with normal aeration (B-BT); 2) Non-muddy substrate with normal aeration (KB-BT); 3) Muddy substrate with up-welling aeration (B-T) and 4) Non-muddy substrate with up-welling aeration (KB-T). Blood cockle were fed daily with algae from Tilapia-green water system together commercial feed Lansy (ZM). After 60 days of rearing, the growth rate of the blood cockle in the treatment B-KT was significantly higher than others. Weight of cockle in treatment B-KT (77.8 ± 0.60 mg) was not significant difference from B-T (76.0 ± 1.25 mg). Survival of blood cockles was highest in B-T (82.9 ± 4.44 %) and lowest in the KB-KT treatment (67.0 ± 3.84 %). The findings showed that juvenile blood cockles (SL:4.88 mmand Wt: 30 mg) obtained higher survival rates in up-welling system, however, they also required muddy substrate to achieve better growth performance.

The experiment was conducted to evaluate the effect of light color on the growth, development and nutritional composition of Spirulina platensis to find appropriate light color to save energy and achieve high economic efficiency. Four treatments were arranged randomly with red light (664 nm wavelength), mixed light (a combination of red and blue at ratio of 1:1), blue light (wavelength 432 nm), white. Each treatment was repeated 3 times. The results showed that the cultivated time to reach  highest density for S. platensis was different in light sources, 7 days for red light, 12 days for mixed light, 15 days for blue light and 17 days for white light. The maximum density, dry weight, chlorophyll-a, carotenoid, protein and lipid content in S. platensis was obtained in the mixed light treatment. In addition, power consumption for S. platensis to reach maximum density in  mixed light  was lower than blue and white light, so that the mixed light is suggested to replace white light in culture of S. platensis for highest economic efficiency.

The study was aimed to investigate the effect of drying time on antioxidant activities of garlic, ginger and lemongrass powders as well as the quality changes of clown knifefish paste with these powders added and 20-day stored at cold temperature (4±1ºC). The results showed that garlic and lemongrass powders were dried for 5 hours, ginger powder’s drying time was 4 hours at the same drying temperature (60-70ºC) for the highest antioxidant activities. Fish paste incorporated with 1 % of garlic powder or 2 % of ginger powder or 2% of lemongrass powder inhibited lipid oxidation, antimicrobial efficiency and TVB-N value better than those of the control sample. The sensory qualities of the samples with 1% of garlic powder extended about 14 days and 16 days in the samples with 2% of ginger powder or lemongrass powder, while the control sample was 8 days. As a consequence, the use of garlic, ginger and lemongrass powders as a food additive would be recommended to extend the food self life and safety for consumer.

Fishing status of two Pangasius species, Bong Lau (Pangasius krempfi) and Tra Ban (Pangasius mekongensis) in Tien River’s estuaries was investigated from August to December, 2017 at three areas of five estuaries, including Tieu – Dai; Ham Luong, and Co Chien-Cung Hau. Data of fishing gears, yield, fishing season, and fish sizes of these two species were collected by interviewing 45 fishermen with the prepared questionnaire. Results showed that three fishing gears used in these areas include gillnet (68.9%), long lines (20%), and hook and line (11.1%). Fishing season can prolong year-round, but the main season is from March to April and from September to October. Harvest sizes of these species vary in large ranges, 0.1 – 15 kg/ individual (common sizes 4-5 kg/individual) for P. krempfi and 0.1 – 30 kg/ individual (common sizes 5-10 kg/individual) for P. mekongensis. P. mekongensis is rarer than P. krempfi. Resources of these species have been declined and harvest sizes have become smaller compared to those of 5 or 10 years ago, mainly due to overfishing, seed source decline, and using destructive fishing gears.

This paper studied common issues in activities to enhance studying Vietnamese and investigated the reality of using games in teaching Vietnamese for grade 1 students. Thence, using some games for first grade  students are proposed to reduce difficulties in teaching Vietnamese in grade 1, help students be happy, and more interested in learning, contribute to improve the effected education.

Innovating in teacher training request the educators to intensify learner’ experience. Based on a sum of the theory of experiential education and the field study consisted of surveying 31 lectures at 8 departments, indeed interview 7 department’s heads, and observing teaching process of 3 lectures of the School of Education, this article is to analyze the real situation of applying the experiential education theory of the lecturers at the School of Education  Most of the  headers and lecturers have understood and applied this theory to improve the student teacher’s professional competencies. Besides that, this study also pointed out a difference about awareness and application of experiential education of the lecturers between the group of methodology and the others. In general, the experiential education activities of the lecturers have been individually applied  and gotten some difficulties. Some of the associated solutions to improve the quality and efficiency of faculty' experiential education activities included updating the curriculum and upgrading lecturer’s competencies also managing the competent portfolio of the students.

STEM (Science - Technology - Engineering and Mathematics) education is an educational trend in most countries in the world. However, how STEM education should be implemented, especially in developing countries such as Vietnam where economic and infrastructure constraints are still a big concern, should be studied comprehensively. At present, there are still many different views on STEM education, which lead to diverse and inconsistent orientations of conducting STEM education. In order to effectively and consistently implement STEM teaching, existing and future educators need to understand STEM education concept appropriately, thereby finding common and appropriate ways to apply this educational approach. This may help to improve the effectiveness of edcation. This study presented the opinions of 185 students of Physics Pedagogy from courses 40, 41 and 42 of Can Tho University on STEM education, so that educators can form theirsuitable orientation to teach STEM in Vietnam.

This article presents an overview about Item Response Theory (IRT) as well as introduce how to install and use IATA – a software used to analyze and evaluate multiple-choice questions (MCQ) based on the IRT. In addition, the article propose a process for compiling and evaluating a MCQ test with the support of IATA. Finally, the article cover analyzing and evaluating multiple choice questions that were compiled in chapter power functions, exponential functions and logarithmic functions according to the specified process, in order to improve the quality of multiple-choice questions.

In the study of Nam Bo folklore, identifying the source of material was the first task of the researchers. In the process of applying the "folklore in context" theory to find sources of material, the short stories of the writer, Son Nam, have met very well the required criteria. The findings indicate that many of Son Nam's short stories are a source of abundant forms of folklore activities in Nam Bo, which are vital research objectives of “folklore in context” tendency. The article reveals the characteristics, roles and location of this research objective in the study of folklore in Nam Bo.

Vietnamese traditional music and Vietnamese medieval literature had mutual influence that showed a close relationship. In various forms, positions and functions, Vietnamese medieval literature’s elements has become a piece of works in traditional music’s materials. On the contrary, traditional music’s aspects had also marked variously on Vietnamese medieval literature. Beside the imprints of traditional music, Vietnamese medieval literature also proved author’s evaluation on some genres of traditional music. Therefore, it expressed not only  writer’s sensitivities on music but also their  great respect  to artists.

Dong Thap province has preserved a large number of board directors ordained in Nguyen dynasty, which are in danger of being eroded, yet are not studied thoroughly. Hence important historical information in the documents has not been used for studying costoms, beliefs, culture, history land and people of Dong Thap. In this paper, the board directors discovered in Dong Thap province are introduced as the basis for studying of the problems mentioned above.

With positive effects of start-up on economic restructuring, labor structure and competitiveness of the economy, effective start-ups orientation and promotion has become an important mission of education in nations for many years.  Through some techniques as analysis, statistics, comparison, this article is aimed to introduce model of entrepreneurship education in China, analyze situations and provide the overview of the entrepreneurship education, then point out some recommendations for Vietnam.

To outline the human resource characteristics of Vietnam's current socio-economic region, the General Statistics Office's recent labor and employment data sources were used for the analysis and assessment of labor situation through comparison of thecountry’s regions. The results show that Vietnamese workers in general and regions’ workers in particular were main simple labors without skilled training; on the other hand, there was a great gap in the quality of labor in socio-economic regions; and sub regions. Therefore, in order to shorten the gap, improve the human resources between regions to meet the needs of local development, step by step integrate into the regional and international labor market, the problem is that the government's policies and solutions are necessary to approach and pay attention to the labor differences in regions and economic-social sub-regional of the whole country based on the characteristics of labor supply and demand currently.

Through a comprehensive survey, sub-system revolutionary memoir, this article define the concept of revolutionary memoir. Besides, the article also shows the important contributions of the revolutionary memoir to the process of Vietnamese modern literature, such as, number of authors and works, reflection in content, artistic aspect. From there, we think that the revolutionary memoir has contributed to the diversity of the Vietnamese literature.

The paper is aimed to propose a research direction to test the impacts of sustainability, including economy, society and environment, on the competitive advantages of the supply chain of agricultural products. Documentary research method is mainly employed in this research in order to synthesize and discuss previous studies related to the topic conducted in countries around the world and in Vietnam. The literature review shows that stakeholder theory is one of the main approaches in the most widely used economic, social and environmental research on supply chain management. In Vietnam, there is a limited body of research on supply chain management approached from the sustainability perspective. This is a specific topic on which little discussion and evaluation have been made to contribute to the development of competitive advantages of the agricultural supply chain on both theoretical and practical sides.

The theory of planned behavior (TPB) was applied to examine the factors (including past experience, attitude, subjective norm and perceived behavioral control) influencing on pro-environmental behavioral intention of domestic tourists in Can Tho city. Data were obtained from 131 domestic tourists in Can Tho city, who responded willingly to a questionnaire-based survey. The results of multiple regression showed all four factors significantly affect domestic tourists’ pro-environmental behavioral intention. Especially, past experience was found as the most important determinant. In addition, implications are proposed for improving pro-environmental behavioral intention of domestic tourists in Can Tho city.

Rotation of rice-shrimp farming is considered as a promising model in adapting to climate change. However, some rice - shrimp households have recently shifted to shrimp monoculture with the expectations of higher profit. Therefore, the current study is aimed at measuring the economic efficiency and investigating the determinants of efficiency gaps for 70 rice-shrimp farmers in An Bien district, Kien Giang province. The study found that the cost share of shrimp farming accounted for 47.87% of total cost, which is lower than that of rice cultivation (53.13%). However, the net profit of shrimp farming was 4.25 times higher than that of rice. The average economic efficiency was 52.1%, which means that the farmer could contract about 47.9% of the total cost without compromising the output. The study also found that educational level and training had positive effects while the distance from field to road system had negative correlations with the economic efficiency.

Besides regulations on the conditions for issuing construction licences and the obligations of the authorities, the provisions on regulating the sanction of administrative violation in activities of construction which play a vital role to assist the local authorities could govern construction activities to be effective, objective and transparent. This article’s aim is to analyze the such provisions that are currently being applied to govern the administrative violations in activities of construction and recommend for the issues in question.