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Thu Hien Nguyen,Ngoc‑Lan Nguyen,Chi Dung Vu,Can Thi Bich Ngoc,Ngoc Khanh Nguyen,Huy Hoang Nguyen 한국유전학회 2021 Genes & Genomics Vol.43 No.2
Background Primordial dwarfsm (PD) is a group of genetically heterogeneous disorders related to developmental disabilities occurring in the uterus and prolongs during all stages of life, resulting in short stature, facial deformities and abnormal brain. Objective To determine the exact cause of the disease in two Vietnamese patients priory diagnosed with PD by severe preand postnatal growth retardation with marked microcephaly and some bone abnormalities. Methods Whole-exome sequencing was performed for the two patients and mutations in genes related to PD were screened. Sanger sequencing was applied to examine the mutations in the patients of their families. Results Three novel mutations in the PCNT gene which have not been reported previously were identifed in the two patients. Of which, two frameshift mutations (p.Thr479Profs*6 and p.Glu2742Alafs*8) were detected in patient I and one stop-gained mutation (p.Gln1907*) was detected in the patient II. These mutations may result in a truncated PCNT protein, leading to an inactivated PACT domain corresponding to residue His3138–Trp3216 of PCNT protein. Therefore, the three mutations may cause a defciency of protein functional activity and result in the phenotypes of primordial dwarfsm in the two patients. Conclusions Clinical presentations in combination with genetic analyses supported an accurate diagnosis of the two patients with microcephalic osteodysplastic primordial dwarfsm type II (MOPD II). In addition, these results have important implications for prenatal genetic screening and genetic counseling for the families.
Khanh Hieu Nguyen,Ngoc Hoai An Nguyen,Thanh Binh Nguyen,Sung Hyun Kim 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
This paper investigates the output-feedback control problem of semi-Markovian jump systems (semi-MJSs) with incomplete probability description. First, an observer-based control is designed to ensure the stochastic stability of the resultant closed-loop system and to guarantee the minimum H∞ performance, where the sojourn time is characterized by the mode-transition-dependent distributions. Then, a finite number of LMIs is obtained via a relaxation method that incorporates some valuable constraints on transition rates into the control design process.
Phuong Ngoc Duy NGUYEN,Linh Le Khanh NGUYEN,Dong Nguyen Thanh LE 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.8
The purpose of this study is to explore the link between job satisfaction and organizational commitment at higher education institutions (HEIs) in emerging countries such as Vietnam and to determine extrinsic work factors that influence job satisfaction. Higher education is critical for socio-economic growth and the overall development of each country. Hence, an understanding of what motivates employees’ actions and attitudes should be obtained before determining the extent of employee satisfaction. The conceptual model was developed by incorporating job satisfaction-related variables, their relationships, and the impact of job satisfaction on organizational commitment. An empirical study was conducted on a study sample of public and private universities, with 316 academics and non-academic employees surveyed. The current study employed the partial least squares structural equation modeling to test the proposed hypotheses. The results reveal a positive and significant relationship between job satisfaction and organizational commitment. The findings confirm that extrinsic work factors (job itself, supervision, working conditions, payment, and reward and recognition) have a positive and significant relationship with job satisfaction. Furthermore, the study indicates that employees at HEIs who have a high level of ability utilization and supervisor support are more likely to be satisfied with their jobs.
Hong Khanh Dieu Nguyen,Toan Dang Nguyen,Dung Ngoc Hoang,Duc Sy Dao,Thao Tien Nguyen,Limphirat Wanwisa,Lan Linh Hoang 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
Hydrotalcite-like compound containing metal cations such as Mg2+, Al3+ and Ni2+ was characterized using Ni K-edge EXAFS and in situ Ni K-edge XANES techniques for clarifying its bonding environment around Ni2+ sites and structure changes during calcination from room temperature to 550 oC, respectively. At the fixed molar ratio of Mg/Ni/Al of 2/1/1, the results obtained from EXAFS analysis showed a slight blue shift before and after the calcination at 550 oC and a reduction in white line peak; the best fits of the two samples revealed tiny change in coordination number about 7 for Ni-O path but considerable difference for Ni-Mg(Al) path from about 4.5 to 9.5, confirming a modification from brucite like to mixed oxide structure. On the other hand, bond distances of the Ni-O and Ni-Mg paths nearly fixed at about 2.06 Å to 3.0 Å reflected stability of the cationic bond order on each plane, but partial collapse and decomposition of the interlayer formed by water molecules and anion CO3 2− after the calcination. Linear combination fit extracted from the in situ Ni K-edge XANES also confirmed the changes along with the calcination such as slow and fast decreases of brucite fraction at 150 oC and 330 oC, respectively, in corresponding to the mixed oxide fraction increases. The achieved bonding structures were also applied to explain acid-base occurrence of the hydrotalcite-like material, especially the acid sites generated by different static charges along with the bonds. The explanation was illustrated by NH3-TPD method.
Doanh Nguyen Khanh,Quynh Nguyen Ngoc,Heo Yoon 한국외국어대학교 국제지역연구센터 2020 International Area Studies Review Vol.23 No.4
This study examined the impact of the Association of Southeast Asian Nations (ASEAN)’s ecosystem vitality (EV) on its agricultural exports to the rest of the world. Using a sample of the six major ASEAN countries (ASEAN-6) (including Indonesia, Malaysia, Philippines, Singapore, Thailand, and Vietnam) and their 72 trading partners for the period 2007–2016, we found robust evidence of a positive relationship between the quality of EV and the volume of agricultural exports. At the sectoral level, the quality of EV had the most substantial effects on the ASEAN’s exports of SITC-0 (food and live animals) and exerted the least impact on the ASEAN’s exports of SITC-2 (crude materials, inedible, except fuels). This empirical evidence implies that natural resource-intensive products are more sensitive to the quality of EV. At the country level, EV has the most potent effect on the ASEAN’s agricultural exports to high-income countries and the least impact on the ASEAN’s agricultural exports to low-income countries. To promote agricultural exports, especially to high-income countries, our empirical results suggest that ASEAN countries need to build specific and effective plans for conservation of environment and management of sustainable ecosystems.
PHUONG, Nguyen Ngoc Duy,LUAN, Ly Thien,DONG, Vu Van,KHANH, Nguyen Le Nhat Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.9
The purpose of the research is to identify antecedents of mobile wallet continuance intention in Vietnam. A self-administered questionnaire was distributed to collect data from a total of 276 respondents. Partial least squares structural equation modeling was employed for analyzing the data. Five mobile wallet features - mobile application quality, mobile wallet familiarity, situational normality, payment security, and feedback mechanism - are introduced as fundamental elements, which influence customer' continuance intention to use mobile wallet in Vietnam. The results indicate that mobile quality application and familiarity can significantly influence perceived ease-of-use (PEOU) and perceived usefulness (PU), but situational normality has an impact only on PEOU. PEOU and PU are positively related to satisfaction. On the other hand, payment security and feedback mechanism affect positively customer' trust. As a result, the positive effects that satisfaction and trust have on electronic wallet continuance intention are confirmed. The findings can be used to advise mobile wallet providers to improve their platform design and services to retain users. As a theoretical contribution, this study combines the Technology Acceptance Model, Unified Theory of Acceptance and Use of Technology to investigate the key determinants on continuance intention in the context of electronic wallet in Vietnam.
MAI, Thi Cam Tu,NGUYEN, Hong Son,PHAN, Nguyen Ngoc Diem,LE, Minh Hang,LUU, Phuong Khanh,NGUYEN, Thi Thu Thao,NGUYEN, Thi Thu Trang Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.6
This study examines the impact of CSR and its authenticity on customer loyalty through the brand image in the chain coffee shop industry. Using qualitative and quantitative methods, 601 survey questionnaires were distributed, of which 491 were analyzed. The results show that CSR has a positive impact on brand image and customer loyalty. In addition, authenticity does not moderate the impact of CSR on brand image and loyalty, as it is difficult for customers to verify the authenticity of CSR action programs. This study emphasizes the importance of CSR action programs and authenticity for businesses to sustainably enhance their distinctive brand image and customer loyalty. Therefore, for sustainable development in the future, managers of coffee shop chains need to focus on the following issues. First, the most important thing is the right awareness of businesses regarding CSR and CSR authenticity. Third, businesses should strengthen the transparency of CSR action programs in various media so that consumers can easily verify authenticity, to increase brand image and improve customer loyalty.