Daoist Thought through Symbols Observed in the Architecture of Tu An Hieu Nghia Pagodas and Temples from the Tri Tôn District, An Giang Province

NGUYEN Trung Hieu,NGUYEN Phuoc Tai DAOS(The Daesoon Academy of Sciences) 2023 Journal of Daesoon Thought and the Religions of Ea Vol.2 No.2

Daoism was introduced into the South-West of Vietnam via two main entries: the missionaries from North and Central Vietnam who migrated to the South by following the Southward movement and the spread of Daoism by Chinese migrant men who came and settled in the South-West of Vietnam from the late seventieth century to late nineteenth century. However, the biggest influence of Daoism in the Southwest of Vietnam was mainly the Chinese missionaries of Daoism. As time went by, together with the impacts of social and historical circumstances, Daoism had a strong influence on the lives of the South-West people in terms of different aspects, especially their faith and religions. The impact of Daoism into people's faith and religion was considerable, especially to the indigenous religions, of which the religion, Four Debts of Gratitude, is a representative example. With the aims of clarifying how Four Debts of Gratitude was influenced by Daoist thought and how the indigenous religions and systemized ideologies in the South-West of Vietnam were related during the period of living condition expansion as well as cohabitation of several ethnic groups in the region, this article focuses on Daoist thought expressed in typical symbols in the sacred architecture of the Four Debts of Gratitude such as Cổ Lầu, wine gourds, and the Eight Trigrams. Once properly examined, it becomes clear that the prominent symbols and other Daoist elements show that Daoism had a profound influence on the Four Debts of Gratitude.

Visible light driven photocatalytic coating of PAA plasma-grafted PVDF membrane by TiO₂ doped with lanthanum recovered from waste fluorescent powder

Hieu Trung Nguyen,Si-Yu Guo,Sheng-Jie You,Ya-Fen Wang 대한환경공학회 2022 Environmental Engineering Research Vol.27 No.3

In this study, the PDVF membranes were fabricated with a La-doped TiO₂ (La-TiO₂) photocatalytic coating in which La element was recovered from the waste fluorescent powder. The process of La element recovery was investigated under different conditions with different acid concentrations. La-TiO₂ photocatalysts were facilely synthesized by the solvothermal method at 80°C followed by thermal sintering at 400°C. The La-TiO₂ photocatalytic membrane fabrication was carried out by dip-coating the polyacrylic acid (PAA) plasma-grafted PVDF membrane into the suspension La-TiO₂. The waste fluorescent powder was characterized by X-Ray Photoelectron Spectroscopy (XPS) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) after dissolving in the aqua regia. The La-TiO₂ by Fourier-Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), UV–Vis diffuse reflectance spectroscopy (DRS), and Scanning Electron Microscopy (SEM). The La-TiO₂ coated PVDF membrane was used to study the filtration and visible light driven photocatalytic degradation of Reactive Blue 5 solution. The experimental results showed that La-TiO₂ possesses high photocatalytic activity (efficiency of 100% after 6-h irradiation), and the best membrane (La-TiO₂/PAA/PVDF) performance (efficiency of 87%) with the water contact angle of 11.4⁰ was achieved. Thereby, it showed that the La-TiO₂ photocatalytic membranes were successfully fabricated with antifouling, self-cleaning properties.

A Novel Publish/Subscribe Tree Construction Algorithm for Wireless Ad-hoc Networks

Hieu Trung Nguyen,Sangyoon Oh 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.1D

In wireless ad-hoc networks, a publish/subscribe system comes up with an event routing if it is distributed. As a point in the discussion, event routing should be efficient enough to drive events from sources to interested users. The existing algorithm SHOPPARENT has exposed how to construct an optimal publish/subscribe tree for routing events. However, there are many cases for improving SHOPPARENT algorithm. In this paper, we propose a novel algorithm, CALSIM, which remedies the tree construction in the context that a similarity between subscriptions is the main routing metric.

Electrospun nanofibers with a core-shell structure of silicon nanoparticles and carbon nanotubes in carbon for use as lithium-ion battery anodes

Hieu, N.,Suk, J.,Kim, D.,Park, J.,Kang, Y. Royal Society of Chemistry 2014 Journal of Materials Chemistry A Vol.2 No.36

Performance Enhancement of SLFNs in Classification by Reducing Effect of Outliers

Hieu Trung Huynh,Yonggwan Won 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7

In this paper, an approach for outlier reduction is proposed to enhance the classification performance of the single-hidden layer feed-forward neural networks (SLFNs). Outliers in the data set are detected based on the distribution on every feature, in which scores are assigned to patterns. Patterns detected as outliers based on these scores will contribute very little in estimating the weights of SLFNs. The experimental results show that, the proposed approach can obtain high accuracy with fast learning speed if there exist outliers in the training set.

The Impact of State Budget Revenue on Economic Growth: A Case of Vietnam

Hieu Huu NGUYEN 한국유통과학회 2019 The Journal of Asian Finance, Economics and Busine Vol.6 No.4

This paper is intended to study the relationship between state budget revenue and economic growth in Vietnam. The ordinary leastsquares regression method is used with secondary data collected from General Statistics Office of Vietnam in the period of 20002017. Vietnamese state budget revenue includes domestic revenue (excluding oil revenue), oil revenue, custom duty revenue, and grants. The testing result shows that the state budget revenue has a positive correlation with economic growth of Vietnam. However, the components of state budget revenue have different levels of impact on the economy. Domestic revenue and oil revenue are statistically significant and have a positive effect on the economy, while the impact of custom duty revenue and grants on the economy is invisible. Vietnamese state budget revenue should be restructured toward the sustainability and by way of boosting the economy, specifically: (1) Increase the proportion of domestic revenue to state budget revenue and domestic revenue should be based on the ground of production and business activities rather than collection from state-owned assets; (2) Reduce the proportion of custom duty revenue and grants to state budget revenue; (3) Keep the volume and ratio of oil revenue in state budget revenue at an appropriate proportion.

Urchin-like nanowire array: a strategy for high-performance ZnO-based electrode utilized in photoelectrochemistry

Hieu, Hoang Nhat,Dung, Nguyen Quoc,Kim, Jimin,Kim, Dojin The Royal Society of Chemistry 2013 Nanoscale Vol.5 No.12

<P>The electrodes in photoelectrochemical cells responsible for the generation of hydrogen and oxygen by water splitting have been intensively studied because of their high photon-to-electron conversion efficiency. The morphology of nanostructures with these high-efficiency electrodes was systematically compared with the morphology of ZnO structures with vertically aligned nanorod arrays (NA), hollow hemisphere arrays (HA), urchin-like (UL) nanorod arrays, and thin films (TF). The UV-vis light absorption, photoresponse (current-voltage characteristics in the dark and under light), and photoelectrochemistry of the electrodes were measured. The highest photon-to-electron conversion efficiency of 65% at a specific UV wavelength for an electrode with a ZnO UL structure was derived from the UL morphology of high light-trapping efficiency and carrier collection efficiency. The UL morphology also produced a photon-to-electron conversion efficiency of 4.5% under a solar simulator by CdS-sensitization of the ZnO UL electrode. The value was the highest observed thus far among the ZnO-based electrodes. We demonstrated that photoresponse measurement is a practical and simple technique for the estimation of the photon-to-electron conversion efficiency of an electrode.</P>

Impact of Direct Tax and Indirect Tax on Economic Growth in Vietnam

Hieu Huu NGUYEN 한국유통과학회 2019 The Journal of Asian Finance, Economics and Busine Vol.6 No.4

Tax can be categorised into direct tax and indirect tax. This paper uses the ordinary least-squares regression method to study the impact of direct and indirect tax on economic growth in Vietnam in the period 2003-2017. Statistical data is collected from the Ministry of Finance of Vietnam. Theoretically, tax generates the state budget revenue and is a tool to regulate the economy. The results of statistical tests show that tax has a positive impact on Vietnam's economic growth. However, the effects of direct tax and indirect tax are different. The indirect tax has a positive influence and promote Vietnam's economic growth, while the impact of the direct tax is invisible. There has not been sufficient evidence to confirm that the indirect tax has a more positive impact than the direct tax. To promote economic growth, Vietnam needs to restructure its tax system towards: (1) Increasing the proportion of indirect tax, reducing the proportion of direct tax in the state budget revenue; (2) Expanding tax bases; (3) Reducing tax rates of corporate income tax and personal income tax; (4) Increasing tax rates of environmental protection tax, natural resources tax, value added tax and excise tax on some types of goods which harm health and environment.

The complete mitochondrial genome sequence of the indigenous I pig (Sus scrofa) in Vietnam

Hieu Duc Nguyen,Tuan Anh Bui,Phuong Thanh Nguyen,Oanh Thi Phuong Kim,Thuy Thi Bich Vo 아세아·태평양축산학회 2017 Animal Bioscience Vol.30 No.7

Objective: The I pig is a long nurtured longstanding breed in Vietnam, and contains excellent indigenous genetic resources. However, after 1970s, I pig breeds have become a small population because of decreasing farming areas and increasing pressure from foreign breeds with a high growth rate. Thus, there is now the risk of the disappearance of the I pigs breed. The aim of this study was to focus on classifying and identifying the I pig genetic origin and supplying molecular makers for conservation activities. Methods: This study sequenced the complete mitochondrial genome and used the sequencing result to analyze the phylogenetic relationship of I pig with Asian and European domestic pigs and wild boars. The full sequence was annotated and predicted the secondary tRNA. Results: The total length of I pig mitochondrial genome (accession number KX094894) was 16,731 base pairs, comprised two rRNA (12S and 16S), 22 tRNA and 13 mRNA genes. The annotation structures were not different from other pig breeds. Some component indexes as AT content, GC, and AT skew were counted, in which AT content (60.09%) was smaller than other pigs. We built the phylogenetic trees from full sequence and D loop sequence using Bayesian method. The result showed that I pig, Banna mini, wild boar (WB) Vietnam and WB Hainan or WB Korea, WB Japan were a cluster. They were a group within the Asian clade distinct from Chinese pigs and other Asian breeds in both phylogenetic trees (0.0004 and 0.0057, respectively). Conclusion: These results were similar to previous phylogenic study in Vietnamese pig and showed the genetic distinctness of I pig with other Asian domestic pigs.

WEAK AND STRONG CONVERGENCE OF SUBGRADIENT EXTRAGRADIENT METHODS FOR PSEUDOMONOTONE EQUILIBRIUM PROBLEMS

Hieu, Dang Van Korean Mathematical Society 2016 대한수학회논문집 Vol.31 No.4

In this paper, we introduce three subgradient extragradient algorithms for solving pseudomonotone equilibrium problems. The paper originates from the subgradient extragradient algorithm for variational inequalities and the extragradient method for pseudomonotone equilibrium problems in which we have to solve two optimization programs onto feasible set. The main idea of the proposed algorithms is that at every iterative step, we have replaced the second optimization program by that one on a specific half-space which can be performed more easily. The weakly and strongly convergent theorems are established under widely used assumptions for bifunctions.