http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Le, Thi Huong,Nga, Thi Thu Vu,Nguyen, Ngoc Dung,Le, Thi Thanh Xuan,Kim, Bao Giang,Phan, Thi Hai,Doan, Thu Huyen,Luong, Ngoc Khue,Nguyen, Tuan Lam,Hoang, Van Minh,Pham, Thi Quynh Nga Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup1
The aim of this paper is to report the rate of current and ever cigarette smoking and explore correlates of current cigarette smoking among adolescents aged 13-15 in Viet Nam. This analysis was derived from GYTS survey, which comprised of 3,430 adolescents aged 13-15, conducted in 2014 in 13 cities and provinces of Viet Nam. We calculated the weighted rates of current and ever cigarette smoking and reported patterns of smoking behavior. We also performed logistic regression to explore correlates of current cigarette smoking behavior. The weighted rate of ever cigarette smoking was 9.5% (95% confidence interval (CI): 8.5 %-10.5%), in which the weighted rate among males (15.4%; 95% CI: 13.6%-17.0%) was higher than that among females (4.2%; 95% CI: 3.3%-5.1%). The weighted rate of current cigarette smoking was relatively low at 2.5% (95%CI: 2.0%-3.0%) with higher weighted rate among males (4.9%; 95% CI: 3.8%-5.9%) compared to the corresponding figure among females (0.2%; 95% CI: 0.0 %-0.5%). Current cigarette smoking was significantly higher among males than females, in students aged 15 versus 13 years old, and in students who had several or all close friends smoking and students with daily observation of smoking at school. For greater smoking reduction outcomes, we recommend that tobacco interventions for adolescents should consider targeting more male students at older ages, establish stricter adherence to school-based banning of cigarette smoking, engage both smoking and nonsmoking adolescents and empower adolescents to resist peer smoking influence as well as changing their norms or beliefs towards smoking benefits.
Ngoc, Le Thi Phuong,Quynh, Doan Thi Nhu,Triet, Nguyen Anh,Long, Nguyen Thanh Department of Mathematics 2019 Kyungpook mathematical journal Vol.59 No.4
In this paper, we consider the Robin-Dirichlet problem for a nonlinear wave equation of Kirchhoff-Carrier type with a viscoelastic term. Using the Faedo-Galerkin method and the linearization method for nonlinear terms, the existence and uniqueness of a weak solution are proved. An asymptotic expansion of high order in a small parameter of a weak solution is also discussed.
Le, Thi Kim Anh,Bui, Thi Tu Quyen,Hoang, Van Minh,Kim, Bao Giang,Phan, Thi Hai,Doan, Thu Huyen,Luong, Ngoc Khue,Nguyen, Tuan Lam,Pham, Thi Quynh Nga Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup1
Efforts to reduce tobacco use among school children need to be based on understanding of access to cigarettes by these subjects because previous studies indicated that enforcement of laws for controlling tobacco sales seems to not affect teen/school children because they can obtain cigarettes from different sources. This paper aims to describe access to and availability of cigarettes among school students (aged 13-15 years old) according to the data from GYTS Vietnam 2014. In GYTS, a national school-based survey of students of grades 8-10, our findings showed that about 15% school children are current smokers who smoke at home, and that they could easily buy cigarettes from stores (63.2%), or someone else (27.8%), or street vendors (9%). Notably, over 85% of school children answered that they were not refused because of their age. This high percentage was nearly the same in the North (85.7%), the Centre (92.5%), and the South (89.7%) of Viet Nam. These findings show that it is quite easy for school children to obtain cigarettes and this is a crucial challenge for policy makers aiming to reduce tobacco use among youth in general and school-age students in particular.
Ngoc Bao Chau Nguyen,Quynh Phuong Anh Nguyen,Thuy To Nhu Le,Thi Phung Kieu Nguyen,Bao Quoc Nguyen 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
We investigated the influence of convenient diets on big-eyed bug Geocoris ochropterus. Development and reproduction of G. ochropterus fed on convenient diets of ant pupae Oecophylla smaragdina and silkworm pupae Bombyx mori were examined using aphids Aphis gossypii as the control diet. Results showed that Geocoris ochropterus nymphs completed development to adults on all diets. Total average development period was 35.1 days fed on ant pupae, 35.9 days fed on silkworm pupae, and 36.0 days fed on aphids. Head width, body length, forewing length, and fresh body weight of adults were not affected by diets, except for females reared on ant pupae that were significantly heavier than those fed on aphids. There was no significant difference in offspring sex ratio. Total number of eggs deposited per female fed on ant pupae was significantly larger than when fed on aphids, while eggs laid by females fed on silkworm pupae were significantly longer than eggs laid by females fed on aphids. Results suggest that ant pupae and silkworm pupae could be effectively used for mass rearing of G. ochropterus.
The Impact of Foreign Ownership on Firm Performance
Quynh Nga DUONG,Thanh Binh VU,Thi-Phuong VO,Ngoc Hoan NGUYEN-LE,Van Diep NGUYEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6
The purpose of the research examines the relationship between foreign ownership and listed firms’ performance in Vietnam. This study employs an extensive set of panel data comprising 288 non-financial listed Vietnamese firms, over a period from 2015 to 2019 taken for analysis. The results show that the higher the foreign ownership ratio, the higher the performance, however, the relationship between foreign ownership and firm’s performance is U-shaped. In contrast, when the foreign ownership ratio is becoming too high, it will reduce the firm’s performance and firm size, liquidity, financial leverage, capital intensity, and growth opportunities. Furthermore, we find that foreign ownership and performance are linked by an inverted U-shaped relationship. A firm’s performance increases with greater foreign ownership up to the range of 36.26%, and declines thereafter. The paper also found positive effects of firm size and growth opportunities, and an inverse relationship between liquidity, financial leverage and capital intensity, and firm’s performance. This study has several implications for the enhancement of information and understanding of the foreign ownership as it sheds light on the foreign ownershipfirm’s performance relationship. Moreover, the study findings contribute to the literature concerning the ownership structure in the context of developing countries.
생물혼합 특성을 반영한 퇴적물 내 흡착제의 안정화 성능 예측모델 : 작동 원리 및 적용 사례를 중심으로
이현민,LE THI NGOC QUYNH,박서연,최용주 한국퇴적환경준설학회(구 한국환경준설학회) 2024 한국환경준설학회 학술대회논문집 Vol.2024 No.4
오염된 퇴적물의 효과적인 관리와 복원은 지속 가능한 환경 보전을 위한 중대한 과제이다. 이러한 문제에 효과적으로 대응하기 위해서는 오염된 퇴적물 내 다양한 오염원의 거동을 이해하고 예측할 수 있는 기술이 필수적이다. 이를 위해, 오염물질의 거동을 수치적으로 표현하는 모델이 개발되었다. 이 모델을 활용함으로써, 흡착제의 안정화 성능을 높은 정확도로 예측할 수 있다. 그러나, 실험실 규모에서의 안정화 성능 측정 실험은 실제 현장 조건과는 다를 수 있는 한계를 지닌다. 특히, 현장의 퇴적물에서는 다양한 저서 생물의 활동으로 인해 퇴적물과 안정화제가 물리적으로 혼합되는 현상이 발생하며, 이는 안정화 성능에도 중요한 영향을 미친다. 본 연구에서는 미생물의 안정화제 혼합 활동과 같은 생물학적 요소를 안정화 성능 예측 모델에 포함시켜 저서 생물이 활동하는 퇴적물 내에서 흡착제의 안정화 성능을 예측할 수 있는 모델을 개발하였다. 나아가 생물 혼합 특성을 모델에 적용하는 원리를 상세히 분석하고, 이를 다양한 실제 실험 결과와 비교 검증함으로써, 모델의 예측 능력을 실질적으로 입증하였다. 연구에서는 안정화제를 혼합한 퇴적물에 Lumbriculus variegatus를 주입한 후 14일, 28일 차에 총 유기 탄소(TOC)를 측정하여 안정화제의 층별 혼합율을 분석하였다. 또한, 기존에 개발한 안정화 성능 예측 모델에 생물 혼합 인자인 dt_bio를 추가하여 기간별 안정화제의 혼합율을 계산하였다. 실험 결과를 바탕으로 캘리브레이션을 진행하고, 실험 조건을 가장 잘 반영하는 dt_bio 값을 도출하였다. 이를 통해 퇴적물 오염 관리 및 안정화 기술의 이론적 기반을 강화하고, 실제 환경 복원 작업에 직접적으로 적용될 수 있는 실질적인 방법론을 제시할 것으로 기대된다.