NEISKORIŠTENI POTENCIJAL I VISOKOTEHNOLOŠKA TRGOVINA: SLUČAJ IZVOZA ZEMALJA ASEAN-6

This study aims to quantify the impact of untapped export potential on ASEAN-6 countries’ high-tech exports for the 2006-2016 period. Our innovative aspect sheds new light on the relationship between the untapped export potential in the previous year and export performance in the current year. Using a system GMM estimator, we found several significant results. Firstly, untapped export potential in the last year has a positive impact on ASEAN-6 countries’ high-tech exports in the current year. Secondly, the effect of untapped export potential on ASEAN-6 countries’ high-tech exports depends on supply competencies (ASEAN-6 countries’ human capital and research and development capability) and the bilateral linkage (importing countries’ trade barriers and institutional similarity between ASEAN-6 countries and importing countries). Thirdly, supply competencies are the most important when ASEAN-6 countries export high-tech goods to high-income countries. In contrast, the bilateral linkage is the most crucial when ASEAN-6 countries ship high-tech products to low-income countries. Measures to enhance human capital, upgrade research and development capability, promote trade liberalization, and minimize the institutional distance with the trading partners are the remedy for ASEAN-6 countries to tap the untapped potential.Ova studija ima za cilj kvantificirati utjecaj neiskorištenog izvoznog potencijala na visokotehnološki izvoz zemalja ASEAN-6 za razdoblje 2006.-2016. Naš inovativni aspekt baca novo svjetlo na odnos između neiskorištenog izvoznog potencijala u prethodnoj godini i izvoznih rezultata u tekućoj godini. Koristeći sustav GMM procjenitelja, pronašli smo nekoliko značajnih rezultata. Prvo, neiskorišteni izvozni potencijal u prošloj godini ima pozitivan učinak na visokotehnološki izvoz zemalja ASEAN-6 u tekućoj godini. Drugo, učinak neiskorištenog izvoznog potencijala na visokotehnološki izvoz zemalja ASEAN-6 ovisi o opskrbnim kompetencijama (ljudski kapital i sposobnost istraživanja i razvoja u zemljama ASEAN-6) i bilateralnoj povezanosti (trgovinske prepreke zemalja uvoznica i institucionalna sličnost između zemlje ASEAN-6 i zemlje uvoznice). Treće, kompetencije u opskrbi su najvažnije kada zemlje ASEAN-6 izvoze robu visoke tehnologije u zemlje s visokim dohotkom. Nasuprot tome, bilateralna veza je najvažnija kada zemlje ASEAN-6 isporučuju visokotehnološke proizvode u zemlje s niskim prihodima. Mjere za poboljšanje ljudskog kapitala, nadogradnju istraživačkih i razvojnih sposobnosti, promicanje liberalizacije trgovine i smanjenje institucionalne udaljenosti s trgovinskim partnerima, lijek su za zemlje ASEAN-6 da iskoriste neiskorišteni potencijal

Factors Influencing Intention to Use Social Insurance Application (VssID) in Vietnam Through Technology Acceptance Model

Technology is becoming more and more popular in public services in general and social insurance in particular in Vietnam. Although the social insurance software has been used since November 2020, the number of users is still limited so far. Therefore, this study aims at investigating determinants of the intention to use social insurance management applications of Vietnamese people. Applying a combination of three models (TAM, TRA and TPB), the study identifies five determinants of technology acceptance of users in their intention to use this application in Vietnam’s Social Insurance, including Perceived usefulness, Perceived ease of use, Subjective norm, Perceived behavioral control, and Attitude towards usage. Data for the study were collected through a survey in three big Vietnamese cities: Ho Chi Minh City, Hanoi and Da Nang. Research results show that users' technology acceptance intention in social insurance in Vietnam is positively influenced by all five factors. From the analysis results, the study proposes recommendations related to improving the performance of the application, propagandizing the high applicability of VssID to the public. Policies and guidelines for the government to promote user's habit of using the application are also recommended. Keywords: Social insurance, intention to use, technology acceptance, VssID DOI: 10.7176/JESD/14-6-02 Publication date:March 31st 202

GC-MS analysis and cytotoxic activity of the n-hexane fraction from Curcuma sahuynhensis Škornick. & N.S.Lý leaves collected in Vietnam

Curcuma sahuynhensis Škornick. & N.S.Lý is an endemic plant in Vietnam that has been used by the Sa Huynh people as a spice and medicine to cure illnesses linked to digestive disorders. Very little information is available so far about the chemical composition and biological effects of C. sahuynhensis. To find new pharmaceutical ingredients, the in vitro cytotoxic effect and the chemical profile of C. sahuynhensis leaf extract were investigated. In this study, the percolation method and liquid-liquid dispersion technique were used to extract dry sample powder. The chemical composition was detected by gas chromatography-mass spectrometry (GC-MS). The Sulforhodamine B and MTT methods were used to determine the cytotoxic activity. The chemical composition analysis showed that the leaf extract contained 14 components. The major components in the n-hexane extract were 6,10,14-trimethylpentadecan-2-one, phytol, 1-ethylbutyl hydroperoxide, isoborneol, 1-methylpentyl hydroperoxide, and neophytadiene. On human cancer cell lines, namely MFC-7, SK-LU-1, Hela, MKN-7, and HL-60, the leaf extract showed dose-dependent cytotoxic activity, with IC50 values ranging from 221.70±10.24 to 369.42±10.60 ?g/mL. The present study provides significant information on the chemical components and cytotoxic effects of the n-hexane extract from C. sahuynhensis leaves. The findings will continue to be crucial in future research on the evaluation of secondary metabolite compound analysis for cancer therapeutic effects

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

Evaluation Of Allelopathic Potential Of Cissus sicyoides Against the Growth Of Echinochloa Crus-Galli And Some Tested Plants

Many plant species in nature exert significant allelopathic potential as part of the defense mechanism system, many among their secondary metabolites (allelochemicals), including mineral constituents, which are responsible for the suppression of weeds and enhancing crop yield when directly incorporated into paddy fields. Cissus sicyoides is considered a high-potential allelopathic plant because of its invasion in nature and detected allelochemicals from the plant parts in some studies. The objective of this research was to exploit the allelopathic properties of C.sicyoides against paddy weeds and some indicator plants under laboratory bioassays and greenhouse conditions. The results demonstrated that C. sicyoides had significant inhibition on E. crus-galli, tested plants, and other paddy weeds. In the laboratory conditions, the extracts from C.sicyoides leaves inhibited the growth of Echinochloa crus-galli by 54.3%. The powders from C.sicyoides leaves inhibited the emergence of paddy weeds by approximately 100.0%. In the greenhouse conditions, the powders from C.sicyoides leaves by adding after 3 and 13 days inhibited the growth of E. crus-galli and the emergence of paddy weeds by 64.4%. Remarkably, negligible harmful effects on rice growth were observed. The findings of the study may provide useful information for the exploitation of this plant species to effectively control weeds in the rice fields for sustainable agriculture production

The Epidemiology of Interpandemic and Pandemic Influenza in Vietnam, 2007–2010: The Ha Nam Household Cohort Study I

Prospective community-based studies have provided fundamental insights into the epidemiology of influenza in temperate regions, but few comparable studies have been undertaken in the tropics. The authors conducted prospective influenza surveillance and intermittent seroprevalence surveys in a household-based cohort in Vietnam between December 2007 and April 2010, resulting in 1,793 person-seasons of influenza surveillance. Age- and sex-standardized estimates of the risk of acquiring any influenza infection per season in persons 5 years of age or older were 21.1% (95% confidence interval: 17.4, 24.7) in season 1, 26.4% (95% confidence interval: 22.6, 30.2) in season 2, and 17.0% (95% confidence interval: 13.6, 20.4) in season 3. Some individuals experienced multiple episodes of infection with different influenza types/subtypes in the same season (n = 27) or reinfection with the same subtype in different seasons (n = 22). The highest risk of influenza infection was in persons 5–9 years old, in whom the risk of influenza infection per season was 41.8%. Although the highest infection risk was in school-aged children, there were important heterogeneities in the age of infection by subtype and season. These heterogeneities could influence the impact of school closure and childhood vaccination on influenza transmission in tropical areas, such as Vietnam

Synthesis, crystal structure and Hirshfeld surface analysis of 4-[3-(4-hy-droxy-phen-yl)-4,5-di-hydro-1<i>H</i>-pyrazol-5-yl]-2-meth-oxy-phenol monohydrate.

In the title pyrazoline derivative, C16H16N2O3·H2O, the pyrazoline ring has an envelope conformation with the substituted sp 2 C atom on the flap. The pyrazoline ring makes angles of 86.73 (12) and 13.44 (12)° with the tris-ubstituted and disubstituted benzene rings, respectively. In the crystal structure, the mol-ecules are connected into chains running in the b-axis direction by O-H⋯N hydrogen bonding. Parallel chains inter-act through N-H⋯O hydrogen bonds and π-π stacking of the tris-ubstituted phenyl rings. The major contribution to the surface contacts are H⋯H contacts (44.3%) as concluded from a Hirshfeld surface analysis