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DOAN, Quyen Thuc,HO, Thu Thi Hoai,DOAN, Quynh Huong Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.8
This study aims to examine the influence of capital structure on the business efficiency of joint stock commercial banks listed on the Vietnamese stock market. The article uses data collected from the financial statements of 15 prominent joint-stock commercial banks out of 27 joint-stock commercial banks listed in Vietnam from 2011 to 2021. The research uses E-view software in quantitative analysis to build regression models to determine the relationship and the impact of capital structure factors on the business efficiency of listed joint stock commercial banks. Research results show that ROA is affected by 2 variables of capital structure. It is the sum of customer deposits to total assets and total liabilities to total equity. Total debt to total equity and total customer deposits to total assets both have a negative effect on ROA. For the regression results of ROA with all control variables, the control variables have a positive relationship with the dependent variable. The article has provided recommendations based on the research findings to determine the proper capital structure. Managers must solve the outstanding amount of mobilized capital in previous years, combined with the bad debt handling activities that have arisen.
Doan, Huong Thi Thanh,Noh, Jin Hyeong,Choe, Se Eun,Yoo, Mi Sun,Kim, Young Ha,Reddy, Kondreddy Eswar,Van Quyen, Dong,Nguyen, Lien Thi Kim,Nguyen, Thuy Thi Dieu,Kweon, Chang Hee,Jung, Suk Chan,Chang, Ki Elsevier 2013 Veterinary parasitology Vol.196 No.3
<P><B>Abstract</B></P> <P>Ticks are vectors of various pathogens that affect humans and animals throughout the world. <I>Anaplasma bovis</I> is one of the most important tick-borne pathogens that cause cattle diseases but there is still very little information available about this agent in Korea. In the present study, 535 <I>Haemaphysalis longicornis</I> tick pools were analyzed from grazing cattle in five Korean provinces. <I>A. bovis</I> was detected in 50 (9.3%) of 535 tick pools using 16S rRNA-based PCR. <I>A. bovis</I> infections were detected for the first time in ticks feeding on cattle in Chungbuk, Geongbuk, and Jeonbuk provinces in Korea. The 50 positive PCR products were sequenced successfully and compared with sequences in GenBank. Phylogenetic analysis of the Korean isolates classified them into four genotypes with nucleotide sequence identities of 99.4–100%. Two of the four genotypes had high similarity (99.8–100%) with known sequences. The other two genotypes have never been identified.</P>
Some fixed point theorems for weakly Picard operators in complete metric spaces and applications
Doan Trong Hieu,Bui The Hung 대한수학회 2022 대한수학회논문집 Vol.37 No.1
In this paper, we prove new fixed point theorems for single-valued and multi-valued weakly Picard operators in complete metric \linebreak spaces and give several examples. As applications, we give several results to Fredholm integral equation.
Factors Affecting Accounting Policy Choice: Evidence from Small and Medium Enterprises in Vietnam
DOAN, Anh Thi Thuy,LE, Binh Thi Hai,LE, Nguyet Thi My,DANG, Ly Ai Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.9
The purpose of this study is to determine the direction and significance of variables influencing small and medium enterprises (SMEs) decisions regarding accounting policy in Vietnam. Research data was collected through a survey of 296 subjects, including chief accountants, accountants, managers, and lecturers with practical experience in accounting work at enterprises. With the help of specialized software SPSS, determining the impact of factors on the choice of accounting policy of enterprises is done through a multivariate regression model with control tools Cronbach's alpha determination, EFA factor analysis, and Pearson correlation analysis. Research results show that there are seven factors affecting the choice of accounting policy in Vietnamese SMEs; in which, the factors information technology, legal environment, information demand, manager's awareness, and accounting qualification have a positive impact; and two factors are tax pressure, and financial leverage have a negative impact on accounting policy choice. These results are consistent with most of the previously published studies. However, in contrast to many previous studies, our research shows that accounting's psychological factor does not affect the accounting policy choice. This is consistent with the characteristics of SMEs in Vietnam because the role of accountants is not appreciated in the business.
News-Finds-Me Perception in Digital Era: A Systematic Review from Retail Marketing Perspective
Doan Viet Phuong NGUYEN,Thanh-Binh PHUNG 한국유통과학회 2024 유통과학연구 Vol.22 No.5
Purpose: The concept of News-finds-me Perception (NFMP) is gaining increasing scholarly interest due to its wide-ranging findings and implications in digital communications and marketing. From the retail marketing and communication approaches, social media is an effective tool to effectively communicate and persuade customers and stakeholders. Nevertheless, a scarcity of systematic review studies that systematically assemble prior research in the field is recognized. Consequently, this research investigated the Scopus database for articles pertaining to NFMP. Research design, data and methodology: The search was conducted on August 24, 2023, retrieving 46 documents. Following a data-cleaning process, 31 documents remained, providing evidence of the subject area's five-year development. The data was refined with OpenRefine and analyzed with VosViewer. Results: An overview of the subject's expansion is presented, which comprises the most cited documents, authors, organizations, journals, and countries. Furthermore, the investigation examines the influential studies that furnished scientists with essential knowledge and identify the current research trend of the research subject. Conclusions: Based on the results, the study proposes theoretical and practical implications, encouraging academics to further integrate the concept with various communication and marketing theories, as well as the retail marketing context, to gain a better understanding of its complex impacts.
Amblovenatum immersum (Thelypteridaceae): A new record for the flora of Vietnam
Doan Hoang SON,Do Van HAI,Bui Hong QUANG,La Anh DUONG,Trinh Van HIEU,Ritesh Kumar CHOUDHARY,이중구 한국식물분류학회 2022 식물 분류학회지 Vol.52 No.2
Amblovenatum immersum (Blume) Mazumdar (Thelypteridaceae) is newly recorded in Vietnam. It is similar to A. terminans (Panigrahi) J. P. Roux in its woody rhizome and cristate spores but differs in terms of its plant size, lobed pinnae, lobed segments, veinlets, sori and indusia. It was previously found to exist in China, India, Indonesia, Malaysia, Myanmar, Philippines, Sri Lanka, and Thailand as well as in east Africa, tropical America, northern Australia and Micronesia. The present study provides a detailed description, photos, and line drawing of the species. Furthermore, a comparison of the diagnostic characters with the closely related species in Vietnam A. terminans is provided.
Gallic acid regulates body weight and glucose homeostasis through AMPK activation.
Doan, Khanh V,Ko, Chang Mann,Kinyua, Ann W,Yang, Dong Joo,Choi, Yun-Hee,Oh, In Young,Nguyen, Nguyen Minh,Ko, Ara,Choi, Jae Won,Jeong, Yangsik,Jung, Min Ho,Cho, Won Gil,Xu, Shanhua,Park, Kyu Sang,Park, The Endocrine Society 2015 Endocrinology Vol.156 No.1
<P>Gallic acid [3,4,5-trihydroxybenzoic acid (GA)], a natural phytochemical, is known to have a variety of cellular functions including beneficial effects on metabolic syndromes. However, the molecular mechanism by which GA exerts its beneficial effects is not known. Here we report that GA plays its role through the activation of AMP-activated protein kinase (AMPK) and by regulating mitochondrial function via the activation of peroxisome proliferator-activated receptor-γ coactivator1α (PGC1α). Sirtuin 1 (Sirt1) knockdown significantly blunted GA's effect on PGC1α activation and downstream genes, suggesting a critical role of the AMPK/Sirt1/PGC1α pathway in GA's action. Moreover, diet-induced obese mice treated with GA showed significantly improved glucose and insulin homeostasis. In addition, the administration of GA protected diet-induced body weight gain without a change in food intake. Biochemical analyses revealed a marked activation of AMPK in the liver, muscle, and interscapular brown adipose tissue of the GA-treated mice. Moreover, uncoupling protein 1 together with other genes related to energy expenditure was significantly elevated in the interscapular brown adipose tissue. Taken together, these results indicate that GA plays its beneficial metabolic roles by activating the AMPK/Sirt1/PGC1α pathway and by changing the interscapular brown adipose tissue genes related to thermogenesis. Our study points out that targeting the activation of the AMPK/Sirt1/PGC1α pathway by GA or its derivatives might be a potential therapeutic intervention for insulin resistance in metabolic diseases.</P>
( Doan Perdana ),( Ray-guang Cheng ),( Riri Fitri Sari ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.1
The most challenging issues in the multi-channel MAC of the IEEE 1609.4 standard is how to handle the dynamic vehicular traffic condition with a high mobility, dynamic topology, and a trajectory change. Therefore, dynamic channel coordination schemes between CCH and SCH are required to provide the proper bandwidth for CCH/SCH intervals and to improve the quality of service (QoS). In this paper, we use a Markov model to optimize the interval based on the dynamic vehicular traffic condition with high mobility nodes in the multi-channel MAC of the IEEE 1609.4 standard. We evaluate the performance of the three-dimensional Markov chain based on the Poisson distribution for the node distribution and velocity. We also evaluate the additive white Gaussian noise (AWGN) effect for the multi-channel MAC coordination scheme of the IEEE 1609.4 standard. The result of simulation proves that the performance of the dynamic channel coordination scheme is affected by the high node mobility and the AWGN. In this research, we evaluate the model analytically for the average delay on CCHs and SCHs and also the saturated throughput on SCHs.
Precision Control for Ionic Polymer Metal Composite Actuator Based on Quantitative Feedback Theory
Doan Ngoc Chi Nam,Dinh Quang Truong,Yoon Jong Il,Ahn Kyoung Kwan 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
An ion polymer metal composite (IPMC) is an Electro-Active Polymer (EAP) that bends in response to a small applied electrical field as a result of mobility of cations in the polymer network and vice versa. Recently, IPMC is widely applied in many fields such as biometric, biomedical and micro manipulator fields. This paper proposes a robust position controller for IPMCs which is based on the quantitative feedback theory (QFT). Firstly, the IPMC actuation was investigated. The PRBS input voltage signals were applied to the IPMC in order to identify the system characteristic. Consequently, the QFT controller for the IPMC was designed from the identified IPMC model. Experiments were carried out to validate the effectiveness of proposed controller applied to the IPMC.
On a family of cohomological degrees
Doan Trung Cuong,Pham Hong Nam 대한수학회 2020 대한수학회지 Vol.57 No.3
Cohomological degrees (or extended degrees) were introduc\-ed by Doering, Gunston and Vasconcelos as measures for the complexity of structure of finitely generated modules over a Noetherian ring. Until now only very few examples of such functions have been known. Using a Cohen-Macaulay obstruction defined earlier, we construct an infinite family of cohomological degrees.