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The Determinants of Dynamic Debt Maturity Structure: Evidence from Vietnam
Nguyen,Thanh Nha,Tran,Thi Thuy Linh 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-
Based on the signaling, matching, agency and tax-based theories, this paper presents a study where the partial adjustment model was applied to investigate influences of firm and macroeconomic factors on the debt maturity structure. The outcomes were then used in a case study to assess the rate of adjusting the debt maturity structure of 279 non-financial companies listed on the Ho Chi Minh Stock Exchange (HOSE) in the period from 2007 to 2015. Results obtained from the System GMM (SGMM) method showed that (1) firms in Vietnam have the dynamic debt maturity structure with the adjustment rate of 25% to 36%, (2) the debt maturity structure of firms in Vietnam is affected by firm factors including SIZE, VOL, LIQ, TAN, AM and TAX and characteristics of the economy such as inflation and interest rates.
Nguyen Phuong Thuy(Nguyen Phuong Thuy ),Nguyen Ngoc Trai(Nguyen Ngoc Trai ),Bui Dang Khoa(Bui Dang Khoa ),Nguyen Hoang Xuan Thao(Nguyen Hoang Xuan Thao ),Vuong Tuan Phong(Vuong Tuan Phong ),Quach Van 한국육종학회 2023 Plant Breeding and Biotechnology Vol.11 No.2
Genetic variability and correlation analysis are fundamental references for the innovative development of breeding programs to improve varieties and desirable traits. In the present study, the correlation and path analysis was conducted to understand the association among yield, micronutrients (iron and zinc), and protein content under aerobic conditions in local rice landraces from various agro ecological regions of Karnataka, India. The grain yield per plant showed a significant positive correlation with plant height, the tiller number, spikelet fertility, flag leaf length, and test weight. The zinc content was negatively correlated with grain yield per plant. The phenotypic path-coefficient analysis revealed that the total number of tillers, grain length, test weight, and harvest index exhibited a positive direct effect on grain yield per plant, while Grain protein content showed a low direct effect on this trait. This study also indicated that harvest index, flag leaf length, spikelet fertility, and test weight could be considered to make for a higher yield.
Nguyen, Khanh Hoang Viet,Dao, Trong Khoa,Nguyen, Hong Duong,Nguyen, Khanh Hai,Nguyen, Thi Quy,Nguyen, Thuy Tien,Nguyen, Thi Mai Phuong,Truong, Nam Hai,Do, Thi Huyen Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.5
Objective: Fibronectin 3 (FN3) and immunoglobulin like modules (Ig) are usually collocated beside modular cellulase catalytic domains. However, very few researches have investigated the role of these modules. In a previous study, we have sequenced and analyzed bacterial metagenomic DNA in Vietnamese goats' rumen and found that cellulase-producing bacteria and cellulase families were dominant. In this study, the properties of modular cellulases and the role of a FN3 in unique endoglucanase belonging to glycosyl hydorlase (GH) family 5 were determined. Methods: Based on Pfam analysis, the cellulases sequences containing FN3, Ig modules were extracted from 297 complete open reading frames (ORFs). The alkaline, thermostability, tertiary structure of deduced enzymes were predicted by AcalPred, TBI software, Phyre2 and Swiss models. Then, whole and truncated forms of a selected gene were expressed in Escherichia coli and purified by His-tag affinity column for assessment of FN3 ability to enhance enzyme activity, solubility and conformation. Results: From 297 complete ORFs coding for cellulases, 148 sequences containing FN3, Ig were identified. Mostly FN3 appeared in 90.9% beta-glucosidases belonging to glycosyl hydrolase family 3 (GH3) and situated downstream of catalytic domains. The Ig was found upstream of 100% endoglucanase GH9. Rarely FN3 was seen to be situated downstream of X domain and upstream of catalytic domain endoglucanase GH5. Whole enzyme (called XFN3GH5 based on modular structure) and truncate forms FN3, XFN3, FN3GH5, GH5 were cloned in pET22b (+) and pET22SUMO to be expressed in single and fusion forms with a small ubiquitin-related modifier partner (S). The FN3, SFN3 increased GH5 solubility in FN3GH5, SFN3GH5. The SFN3 partly served for GH5 conformation in SFN3GH5, increased modules interaction and enzyme-soluble substrate affinity to enhance SXFN3GH5, SFN3GH5 activities in mixtures. Both SFN3 and SXFN3 did not anchor enzyme on filter paper but exfoliate and separate cellulose chains on filter paper for enzyme hydrolysis. Conclusion: Based on these findings, the presence of FN3 module in certain cellulases was confirmed and it assisted for enzyme conformation and activity in both soluble and insoluble substrate.
Online Learning, Digital Platform and Higher Education in Vietnam :A Comparative Analysis
Thuy Minh Trang Nguyen(Thuy Minh Trang Nguyen ),Yoo-Il Bae(Yoo-Il Bae) 한양대학교 유럽-아프리카연구소 2022 글로벌 거버넌스와 문화 Vol.2 No.2
This paper examined the increasing demands of online education platform like MOOCs, the most famous open online courses, in the age of digital transformation in the context of developing countries. In case of Vietnam, the main case of this paper, the citizens’ desire for higher and technical education as well as disruptive innovation in information and communication technology pushed traditional colleges and education institutions to adjust to rapidly changing education market. Yet, the attempt has not been successful. What caused this supply and demand gap? Why are current measures inadequate to meet citizens’ need? Through the case study method with comparative reference to neighboring Southeast Asian countries, this paper argued that online education platform like MOOCs in Vietnam has not been successful mainly because of the lack of proper understanding of online education by traditional universities and systemic financial as well as legal support from the government. We argued that the removal of these obstacles will integrate the traditional and new online education and meet the growing demands of citizens.
Documents of The Nguyen Dynasty's Mission to China in 1883: The Origins and Historical Values
Nguyen, Thi Thu Thuy Korea Institute for ASEAN Studies 2021 Suvannabhumi Vol.13 No.1
In 1882, after the French defeated Tonkin for the second time, the Nguyen Dynasty led by King Tự Đức 嗣德 appointed Phạm Thận Duật 范慎遹 and Nguyễn Thuật 阮述 as envoys to the Qing Dynasty to seek the Chinese's help to deal with the French invasion. The trip's information from 1883 such as the schedule, the content, the discussion, and the progress was specifically reflected in the two envoys' diaries, including "Notes of Voyage to Qing Dynasty in The First Year of Jianfu" 建福元年如清日程 (Phạm Thận Duật and Nguyễn Thuật), "Notes of Voyage to Tianjin" 往津日记(Nguyễn Thuật). This article presents the origin of these documents and their historical values in order to provide insights into the study of diplomatic relations between the Nguyen Dynasty and the Qing Dynasty in the late 19th century through the 1883 mission.
Documents of The Nguyen Dynasty’s Mission to China in 1883: The Origins and Historical Values
( Nguyen Thi Thu Thuy ) 부산외국어대학교 아세안연구원(구 부산외국어대학교 동남아지역원) 2021 Suvannabhumi Vol.13 No.1
In 1882, after the French defeated Tonkin for the second time, the Nguyen Dynasty led by King Tự Đức 嗣德 appointed Phạm Thận Duật 范慎遹 and Nguyễn Thuật 阮述 as envoys to the Qing Dynasty to seek the Chinese’s help to deal with the French invasion. The trip’s information from 1883 such as the schedule, the content, the discussion, and the progress was specifically reflected in the two envoys’ diaries, including “Notes of Voyage to Qing Dynasty in The First Year of Jianfu” 建福元年如清日程 (Phạm Thận Duật and Nguyễn Thuật), “Notes of Voyage to Tianjin” 往津日记 (Nguyễn Thuật). This article presents the origin of these documents and their historical values in order to provide insights into the study of diplomatic relations between the Nguyen Dynasty and the Qing Dynasty in the late 19th century through the 1883 mission.
Ngoc Thuy Nguyen,Nhat Thong Tran,Tan Phat Phan,Anh Thu Nguyen,My Xuyen T. Nguyen,Nguyen Ngan Nguyen,Young Ho Ko,Dai Hai Nguyen,Tran T.T. Van,DongQuy Hoang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.108 No.-
While the efficient usage of biomass waste can significantly help in addressing environmental issues,there are only a few reports that discuss about processing such waste effectively at a low-cost. Such challengearises from the strong association between the components biomass. In this study, an abundantagricultural byproduct, rice husk (RH), was used as the starting resource. A simple biorefining processof alkaline peroxide treatment followed by acid precipitation and ethanol extraction was performed onRH to obtain cellulose, hemicellulose, lignin, and silica. The chemical structures, morphologies, andphysic-chemical properties of the separated components were identified through a wide range of characterizationapproaches. The final products obtained from of this process were (i) bundles of fiber-likecellulose with a fiber width of 6 mm and (ii) small particles of hemicellulose and lignin with nonuniformshapes. The lignocelluloses products had over 90 wt% carbon with 52.28% crystalline ratio. Meanwhile, the other products comprising hemicelluloses, lignin, and silica were amorphous. The outcomeof this study contributes to expanding and developing the simple and efficient conversion processof biomass waste into sustainable value-added materials. It is crucial to reduce the environmental impactby using renewable materials as the new building block resources for synthetic chemicals.
Factors Affecting the Development of Vietnamese Construction and Real Estate Companies
Giang Lam PHAN(Giang Lam PHAN ),Thuy Dieu NGUYEN(Thuy Dieu NGUYEN ),Chi Thi NGUYEN(Chi Thi NGUYEN ),Lan NGUYEN(Lan NGUYEN ),Le Thi TRAN(Le Thi TRAN ) 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.9
This study aims to investigate the factors that contribute to the sustainable development of 334 Vietnamese construction and real estate companies listed on the Stock Exchange of Vietnam over a 5-year period from 2016 to 2020. By using regression analysis with the support of STATA software through examining the financial statements, which involves looking into crucial ratios including capital structure, profitability, firm size, accounts receivable management, and tangible assets investment, this study sheds light on whether these accounting indicators could help predict the construction and real estate companies growing potential in the future. Nevertheless, these ratios slightly contribute to the explanation of the change in revenue growth ratio, with a result of 1.6%, indicating that the value relevance of accounting information provides a modest and insignificant effect on investment decisions. This is understandable because the Vietnamese construction and real estate market still has many shortcomings in handling unexpected events, as well as the industry’s peculiarities related to major capital sources from bank loans. Based on this study, governmental authorities and business executives should plan appropriate risk management policies and measures to contribute to the sustainable development of construction and real estate companies.
Preparing cuprous oxide nanomaterials by electrochemical method for non-enzymatic glucose biosensor
Nguyen, Thu-Thuy,Huy, Bui The,Hwang, Seo-Young,Vuong, Nguyen Minh,Pham, Quoc-Thai,Nghia, Nguyen Ngoc,Kirtland, Aaron,Lee, Yong-Ill IOP 2018 Nanotechnology Vol.29 No.20
<P>Cuprous oxide (Cu<SUB>2</SUB>O) nanostructure has been synthesized using an electrochemical method with a two-electrode system. Cu foils were used as electrodes and NH<SUB>2</SUB>(OH) was utilized as the reducing agent. The effects of pH and applied voltages on the morphology of the product were investigated. The morphology and optical properties of Cu<SUB>2</SUB>O particles were characterized using scanning electron microscopy, x-ray diffraction, and diffuse reflectance spectra. The synthesized Cu<SUB>2</SUB>O nanostructures that formed in the vicinity of the anode at 2 V and pH?=?11 showed high uniform distribution, small size, and good electrochemical sensing. These Cu<SUB>2</SUB>O nanoparticles were coated on an Indium tin oxide substrate and applied to detect non-enzyme glucose as excellent biosensors. The non-enzyme glucose biosensors exhibited good performance with high response, good selectivity, wide linear detection range, and a low detection limit at 0.4 <I>μ</I>M. Synthesized Cu<SUB>2</SUB>O nanostructures are potential materials for a non-enzyme glucose biosensor.</P>