古今越南漢字與其未來

Hoang Thi Thu Thuy 단국대학교 한문교육연구소 2020 International Han-character Education Research Vol.3 No.1

2천여 년 동안 한자를 사용한 베트남에는 지금까지도 한자의 영향이 닿지 않은 곳이 없다. 고대에 한자가 베트남의 다방면에 영향을 준 것은 부인할 수 없는 사실이다. 과거의 베트남은 한자를 ‘성현지자(聖賢之字)’, ‘재도지자(載道之字)’ 등으로 불렸고 그 위상이 매우 높아 문맹인 백성들은 한자가 적힌 폐지 한 조각을 보기만 하면 반드시 허리를 굽혀 줍는 등, ‘결석자지(敬惜 字紙, 문자가 적힌 종이를 귀하게 여기는 것)’의 문화가 존재했다. 반면, 지금의 베트남은 명승고 적, 절, 사원, 서적에 모두 한자가 적혀져 있지만 90%의 베트남인들은 자신의 조상들이 쓴 문자를 이해하지도 읽어내지도 한다. 베트남 학자들은 음수사원(飲水思源, 물을 마실 때는 그 근원을 생각하다. 즉 근본을 잊지 않다) 한 베트남 민족이 오늘에 이르러 ‘망본(忘本, 근본을 잃다)’하였음을 슬프지만 인정할 수밖에 없었다. 이로 인해 학자들은 서로 연합하여 베트남 정부에 한자의 재활성화를 요구했다. The influence of Chinese characters that have been used in Vietnam for more than two thousand years is being spread almost everywhere. In ancient times, the influence of Chinese characters on various aspects of Vietnam was not denied. In the past, Vietnamese named Chinese characters as ‘the word of sages’ and ‘the principle of the word’, and its status was highly respected. As the illiterate people saw a Chinese character on a small waste paper, they must be bent and took it, respectfully placed it on ‘the honorific achievements word paper’ ...Nowadays, in Vietnam’s places such as famous historic and cultural sites, temples, and literatures all have Chinese characters, but 90% of Vietnamese do not understand and can’t read their own characters. Vietnamese scholars sorrowfully believe that the ‘drinking water from the source’ has so far been “forgotten” and therefore jointly asked the Vietnamese government to revive Chinese characters.

Soil Erosion Modeling in the 3S Basin of the Mekong River Basin

Hoang Thu Thuy,Giha Lee,Wansik Yu,Yongchul Shin 한국지반환경공학회 2017 한국지반환경공학회논문집 Vol.18 No.7

The 3S Basin is described as an important contributor in terms of many aspects in the Mekong River Basin in Southeast Asia. However, the 3S Basin has been suffering adverse consequences of changing discharge and sediment, which are derived from farming, deforestation, hydropower dam construction, climate change, and soil erosion. Consequently, a large population and ecology system that live along the 3S Basin are seriously affected. Accordingly, the calculating and simulating discharge and sediment become ever more urgent. There are many methods to simulate discharge and sediment. However, most of them are designed only during a single rainfall event and they require many kinds of data. Therefore, this study applied a Catchment-scale Soil Erosion model (C-SEM) to simulate discharge and sediment in the 3S Basin. The simulated results were judged with others references’s data and the observed discharge of Strung Treng station, which is located in the mainstream and near the outlet of the 3S Basin. The results revealed that the 3S Basin distributes 31% of the Mekong River Basin’s total discharge. In addition, the simulated sediment results at the 3S Basin’s outlet also substantiated the importance of the 3S Basin to the Mekong River Basin. Furthermore, the results are also useful for the sustainable management practices in the 3S Basin, where the sediment data is unavailable.

Soil Loss Vulnerability Assessment in the Mekong River Basin

Thuy, Hoang Thu,Lee, Giha Korean Geo-Environmental Society 2017 한국지반환경공학회논문집 Vol.18 No.1

The Mekong River plays an extremely important role in Southeast Asia. Flowing through six countries, including China, Myanmar, Thailand, Laos PDR, Cambodia, and Vietnam, it is a site of great biological and ecological diversity and the habitat of numerous species of fish. It also supports a very large population that lives along the river basin. Therefore, much attention has been focused on the giant Mekong River Basin, particularly, its soil erosion and sedimentation problems. In fact, many methods have been used to calculate and simulate these problems. However, in the case of the Mekong River Basin, the available data is limited because of the extreme size of the area (about $795,000km^2$) and lack of equipment systems in the countries through which the Mekong River flows. In this study, we applied the Universal Soil Loss Equation (USLE) model in a GIS (Geographic Information System) framework to calculate the amount of soil erosion and sediment load during the selected period, from 1951 to 2007. The result points out dangerous areas, such as the Upper Mekong River Basin and 3S Basin (containing the Sekong, Sesan, and Srepok Rivers) that are suffering the serious consequences of soil erosion problems. Moreover, the present model is also useful for supporting river basin management in the implementation of sustainable management practices in the Mekong River Basin and other basins.

First principles study on magnetic anisotropy mechanism in tetragonal distorted structural phases of Fe₂YZ based Heusler alloys (Y = Mn, Pt; Z = Ge, Sn)

Hoang Thu Thuy,Qurat ul Ain,S. H. Rhim,S. C. Hong 한국자기학회 2019 한국자기학회 학술연구발표회 논문개요집 Vol.29 No.2

Soil Loss Vulnerability Assessment in the Mekong River Basin

Hoang Thu Thuy,Giha Lee 한국지반환경공학회 2017 한국지반환경공학회논문집 Vol.18 No.1

The Mekong River plays an extremely important role in Southeast Asia. Flowing through six countries, including China, Myanmar, Thailand, Laos PDR, Cambodia, and Vietnam, it is a site of great biological and ecological diversity and the habitat of numerous species of fish. It also supports a very large population that lives along the river basin. Therefore, much attention has been focused on the giant Mekong River Basin, particularly, its soil erosion and sedimentation problems. In fact, many methods have been used to calculate and simulate these problems. However, in the case of the Mekong River Basin, the available data is limited because of the extreme size of the area (about 795,000 ㎢) and lack of equipment systems in the countries through which the Mekong River flows. In this study, we applied the Universal Soil Loss Equation (USLE) model in a GIS (Geographic Information System) framework to calculate the amount of soil erosion and sediment load during the selected period, from 1951 to 2007. The result points out dangerous areas, such as the Upper Mekong River Basin and 3S Basin (containing the Sekong, Sesan, and Srepok Rivers) that are suffering the serious consequences of soil erosion problems. Moreover, the present model is also useful for supporting river basin management in the implementation of sustainable management practices in the Mekong River Basin and other basins.

Soil Erosion Modeling in the 3S Basin of the Mekong River Basin

Thuy, Hoang Thu,Lee, Giha,Yu, Wansik,Shin, Yongchul Korean Geo-Environmental Society 2017 한국지반환경공학회논문집 Vol.18 No.7

The 3S Basin is described as an important contributor in terms of many aspects in the Mekong River Basin in Southeast Asia. However, the 3S Basin has been suffering adverse consequences of changing discharge and sediment, which are derived from farming, deforestation, hydropower dam construction, climate change, and soil erosion. Consequently, a large population and ecology system that live along the 3S Basin are seriously affected. Accordingly, the calculating and simulating discharge and sediment become ever more urgent. There are many methods to simulate discharge and sediment. However, most of them are designed only during a single rainfall event and they require many kinds of data. Therefore, this study applied a Catchment-scale Soil Erosion model (C-SEM) to simulate discharge and sediment in the 3S Basin. The simulated results were judged with others references's data and the observed discharge of Strung Treng station, which is located in the mainstream and near the outlet of the 3S Basin. The results revealed that the 3S Basin distributes 31% of the Mekong River Basin's total discharge. In addition, the simulated sediment results at the 3S Basin's outlet also substantiated the importance of the 3S Basin to the Mekong River Basin. Furthermore, the results are also useful for the sustainable management practices in the 3S Basin, where the sediment data is unavailable.

First principles study on half-metallicity of alkali-metalbased half-Heusler XCrZ (X = Li, Na, K; Z = As, Sb)

Hoang Thu Thuy,S. H. Rhim,S. C. Hong 한국자기학회 2019 한국자기학회 학술연구발표회 논문개요집 Vol.29 No.1

UNIQUENESS RESULTS ON MEROMORPHIC FUNCTIONS AND THEIR DIFFERENCE OPERATORS SHARING TARGETS WITH WEIGHT

Thu Thuy Hoang,Hong Nhat Nguyen,Duc Thoan Pham 대한수학회 2023 대한수학회보 Vol.60 No.2

Let $f$ be a nonconstant meromorphic function of hyper-order strictly less than 1, and let $c\in\mathbb C\setminus\{0\}$ such that $f(z + c) \not\equiv f(z)$. We prove that if $f$ and its exact difference $\Delta_cf(z) = f(z + c) - f(z)$ share partially $0, \infty$ CM and share 1 IM, then $\Delta_cf = f$, where all 1-points with multiplicities more than 2 do not need to be counted. Some similar uniqueness results for such meromorphic functions partially sharing targets with weight and their shifts are also given. Our results generalize and improve the recent important results.

Structural stability and magnetic anisotropy properties in a Heusler compound Fe₂MnSn

Hoang Thu Thuy,Qurat-ul-ain,S. H. Rhim,S. C. Hong 한국자기학회 2020 한국자기학회 학술연구발표회 논문개요집 Vol.30 No.1

The Influence of the Debt Ratio and Enterprise Performance of Joint Stock Companies of Vietnam National Coal and Mineral Industries Holding Corp.

HOANG, Thi Thuy,HOANG, Lien Thi,PHI, Thi KimThu,NGUYEN, Minh Thu,PHAN, Minh Quang Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.10

This objective of this study is to enrich the literature by the debt ratio and enterprise performance of Joint stock companies of Vietnam National Coal and Mineral Industries Holding Corporation Limited (Vinacomin). The debt ratio is an important index of capital structure, and it influences and decides the enterprise performance. Therefore, the determination of reasonable debt ratio level is beneficial to the stable operation of Vinacomin's enterprises. Based on the research conclusion about the effect on capital structure of debt ratio from domestic and foreign scholar, collecting data from 2014-2018 of Vinacomin's enterprises as a research sample, the article conducts research on the relationship between debt ratio and business performance of Vinacomin, as measured by return on total Assets. In addition, the study uses free cash flow, company size, growth opportunity, investment opportunities, operating costs to sales ratio as control variables.The study shows the debt ratio of Joint stock companies of Vietnam National Coal and Mineral Industries Holding Corporation Limited has a negative effect on the enterprise performance. Furthermore, the research results of the article are references for Vinacomin' enterprises in the course of production and business activities, determining a reasonable debt ratio, and improving the operational performance of enterprises.