The Role of Institution on FDI and Environmental Pollution Nexus

Thanh Cong HA,Hoang Nam NGUYEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6

The research aim is to empirically study the role of institutions in the relationship between foreign direct investment (FDI) and environmental pollution in 86 developing countries during 2008–2018. This study collects key data from the World Development Indicators (WDI). Institution indicators are collected from the Global Governance Indicators (WGI). To carry out the research objectives, the authors conducted quantitative analysis through System Generalized Method of Moments (S-GMM). The research results indicate that FDI positively impacts on environmental pollution. In particular, governmental efficiency, political stability and non-violence, quality regulations, the rule of law and the voice and accountability play an important role in the FDI-environmental pollution nexus in developing countries. The findings of this study suggest that these countries in question need to consider very carefully welcoming FDI inflows. In other words, host governments should build ‘filter funnel’ to attract FDI for long-term development. Moreover, they also have to manage strictly foreign invested enterprises domestically in order to minimize negative impacts on environment quality. For a stable governance environment, each country must strictly follow international environmental agreements, and people and businesses must comply with environmental regulations and raise awareness of environmental protection as the foundation for economic growth and environmental sustainability.

Region of Interest Localization for Bone Age Estimation Using Whole-Body Bone Scintigraphy

Thanh-Cong Do,양형정(Hyung Jeong Yang),김수형(Soo Hyung Kim),이귀상(Guee Sang Lee),강세령(Sae Ryung Kang),민정준(Jung Joon Min) 한국스마트미디어학회 2021 스마트미디어저널 Vol.10 No.2

In the past decade, deep learning has been applied to various medical image analysis tasks. Skeletal bone age estimation is clinically important as it can help prevent age-related illness and pave the way for new anti-aging therapies. Recent research has applied deep learning techniques to the task of bone age assessment and achieved positive results. In this paper, we propose a bone age prediction method using a deep convolutional neural network. Specifically, we first train a classification model that automatically localizes the most discriminative region of an image and crops it from the original image. The regions of interest are then used as input for a regression model to estimate the age of the patient. The experiments are conducted on a whole-body scintigraphy dataset that was collected by Chonnam National University Hwasun Hospital. The experimental results illustrate the potential of our proposed method, which has a mean absolute error of 3.35 years. Our proposed framework can be used as a robust supporting tool for clinicians to prevent age-related diseases.

Application of Deep Recurrent Q Network with Dueling Architecture for Optimal Sepsis Treatment Policy

Thanh-Cong Do,양형정(Hyung Jeong Yang),Ngoc-Huynh Ho 한국스마트미디어학회 2021 스마트미디어저널 Vol.10 No.2

Sepsis is one of the leading causes of mortality globally, and it costs billions of dollars annually. However, treating septic patients is currently highly challenging, and more research is needed into a general treatment method for sepsis. Therefore, in this work, we propose a reinforcement learning method for learning the optimal treatment strategies for septic patients. We model the patient physiological time series data as the input for a deep recurrent Q-network that learns reliable treatment policies. We evaluate our model using an off-policy evaluation method, and the experimental results indicate that it outperforms the physicians’ policy, reducing patient mortality up to 3.04%. Thus, our model can be used as a tool to reduce patient mortality by supporting clinicians in making dynamic decisions.

A Study on Characteristics of Power Generation System Using Biogas from the Waste of Pig Farm

Thanh-Cong Huynh,Xuan-Mai Pham,Dinh-Hung Nguyen,Minh-Tien Tran 한국수소및신에너지학회 2010 한국수소 및 신에너지학회논문집 Vol.21 No.5

electric production, a SI gasoline engine is modified to use biogas fuel and was installed in a 20 KVA power generation system. An electronic speed regulation unit is developed to keep the system speed at 1500rpm. Experimental investigations have been carried out to examine the performance characteristics of power generation system (such as: system frequency, phase output voltage,...). In addition, the operating parameters and output emissions (NOx, HC, and CO2) of biogas-fueled engine are preliminary evaluated and analyzed for the change of system load. Results indicated that the researched power generation system shows a high stability of output voltage and frequency with help of speed regulator. Biogas fuel (mainly CH4 and CO2) has an environmental impact and potential as a green alternative fuel for SI engine and they would not require significant modification of existing engine hardware. Output emissions of biogas-fueled engine are found to be relative low. NOx emission increases with the increase of output electric power of the power generation system.

The Impact of Culture on Women's Leadership in Public Sector

CONG Thanh Huyen 이화여자대학교 아시아여성학센터 2012 이화여자대학교 아시아여성학센터 학술대회자료집 Vol.2012 No.10

The topic of women and educational leadership is well documented internationally, yet research in this field is rare in Vietnam. This study aims to explore how culture shaped the way women led as well as their beliefs and perceptions about leadership in public sectors in Vietnam. In line with the study objective, three research questions are set up: (1) What are the leadership experiences of women leaders in public sector in Vietnam? (2) ow does culture shape their beliefs and perceptions about leadership as well as the way they lead? (3) How do culture and experiences of these Vietnamese women leaders impact their access to career advancement in public sector? The qualitative methodology is employed in order to address the research questions; in particular, unstructured interview is used as an effective tool to discover the inner psychological aspect. Sample size is comprised of ten women senior leader working in public sector who were randomly selected. The main findings suggested that both the indigenous and organizational culture substantially influenced women exercising leadership and consequently led to the poor representation of women in senior positions in public sector. The women encountered more difficulties in filling their roles when they were younger. Age became a very important factor in the practice of leadership in Vietnam. In addition, traditional gender roles and sociocultural norms together with the selection process and stereotypical tasks lowered the womens self confidence and career aspiration.

Physical and Numerical Model of Flow through the Spillways with a Breast Wall

Nguyen Cong Thanh,Wang Ling-Ling 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.7

Spillways with breast walls are often used in such situations as increasing the regulating storage of flood discharge or disposing sediment from the reservoirs, etc. The hydraulic characteristics of the spillways with breast walls can be obtained by experimental, analytical and numerical methods. The aim of this study is to predict some characteristics of flow through the spillway with a breast wall with low and average-head operation using the numerical modeling along with some turbulence closure models. The experimental data were used to validate the numerical predictions. The results show that the RNG k-ε and the standard k-ε turbulence models can predict quite precisely some characteristics, such as the water surface, the discharge, and the vertical pressure distribution in comparison with the measured data. However, some errors occur on this pressure in the region nearby the crest boundary. Furthermore, the RNG k-ε turbulence model performed more accurately than the standard k-ε model as compared to the experimental data. Therefore, the RNG k-ε turbulence model uses to properly validate the characteristics of the flow through spillway with a breast wall under various conditions, without recourse to expensive experimental procedures.

A Routing Method Considering Physical Impairments in Multi-Fiber WDM Network for Future Multimedia Services

Nguyen Thanh Cong,Yusuke Hirota,Hideki Tode,Koso Murakami 한국멀티미디어학회 2009 한국멀티미디어학회 국제학술대회 Vol.2009 No.-

Optical WDM networks have been studied as future promising networks for high quality multimedia services like forthcoming 8K super high definition video applications. In extremely higher data rate transmission systems like 160Gbps ones, physical impairments degrade optical signal more seriously. We especially pay attention to Polarization Mode Dispersion (PMD) which is the typical physical impairment. In this paper, we propose a new routing method for multi-fiber WDM networks that reduces influence of physical impairments and makes loss probability improve. Its performance is evaluated by computer simulations.

A Study on Performance and Combustion Characteristics for Valve Overlap Period Variation in a Hydrogen-fueled Engine with External Mixture

Huynh Thanh Cong,강준경(Joonkyoung Kang),노기철(Kichol Noh),이종태(Jongtai Lee) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

In order to develop an external mixture type hydrogen engine with high performance, the characteristics of performance and combustion are investigated for various valve overlap period by using Hz engine installed a mechanical continuous variable valve timing system. In experiments, valve overlap periods are analogically varied for 0° to 400°CA by 10°CA with the same amount of supplied energy as valve overlap period of O°CA, fuel-air equivalence ratio of 0.3 to backfire limit equivalence ratio. The obtained results show that by using a similarly low supplied energy, the tendencies of the basic qualitative performance and combustion characteristics are similar to conventional engines using petroleum fuel, but quantitative results give a little difference. The backfire limit equivalence ratio (defined as the upper limit of fuel-air equivalence ratio just before backfire occurs) was also improved significantly with decrease of valve overlap period and/or for operating conditions with the same amount of supplied energy.

Molecular cloning of chicken interleukin-17B, which induces proinflammatory cytokines through activation of the NF-κB signaling pathway

Hoang, Cong Thanh,Hong, Yeojin,Truong, Anh Duc,Lee, Janggeun,Lee, Kyungbaek,Hong, Yeong Ho PERGAMON 2017 DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY Vol. No.

<P><B>Abstract</B></P> <P>Interleukin (IL)-17B is a little known member of the IL-17 cytokine family, which plays an important role in immunity by regulating the expression of proinflammatory cytokines. In this study, we determined the coding sequence and biological functions of a novel chicken IL-17B (chIL-17B). The full-length chIL-17B coding sequence includes 567 nucleotides encoding 188 amino acids, which was identified in small intestinal epithelial cells. The chIL-17B protein shares 96.48% amino acid sequence identity with turkey, 92.57% with duck, and 44.92–64.06% with mammalian IL-17B proteins. ChIL-17B shares three exons and two introns with mammals, turkey, and duck. Moreover, IL-17B mRNA was more highly expressed than IL-17A mRNA in several organs of chickens infected with <I>Salmonella</I> and was upregulated in chicken cell lines following LPS stimulation. In addition, in chicken cell lines, chIL-17B induced the mRNA expression of several proinflammatory cytokines, including IL-1β, IL-6, LITAF, and INF-γ, but not IL-17A, and activated MyD88, TAK1, NF-κB1, and SOCS1, which are associated with the NF-κB signaling pathway. Taken together, chicken interleukin-17B plays a critical role in host defense against the bacterial pathogens, and regulates proinflammatory cytokines by activating the NF-κB signaling pathway.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A novel chicken interleukin-17B (chIL-17B) was cloned. </LI> <LI> Chicken IL-17B expression was upregulated in response to bacterial infection. </LI> <LI> Chicken IL-17B functions through the NF-κB signaling pathway. </LI> <LI> ChIL-17B overexpression activates proinflammatory cytokines in HD11, OU2, and CU91 cells. </LI> </UL> </P>

A performance comparison of transport membrane condenser with different membrane shape and material

Van Cong Le(레반콩),Jun Cong Ge(갈준총),Thanh Phuong Nguyen(응웬탄푸옹),Thi Nhan Nguyen(응웬티난),Song Ju Hong(홍성주),Chan Woo Park(박잔우) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11

Flue gas from boiler contains a large amount of heat loss and wastewater. Recovery of heat and vapor is highly expected to enhance boiler efficiency and reduce its consumption. Based on the sensible heat and latent heat of vapor in the hot flue gas, membrane condenser can achieve high recover efficiencies by a proper membrane. In this study, the humidity gas was used as artificial flue gas while cooling water contribute to the condensation and transport of vapor. Different membranes were applied when membrane area and operating conditions were kept similar. The performance of plate type and circular type ceramic membrane were compared together. In order to enhance the recovery efficiency of condenser, membrane surface was modified by different methods and materials to obtain the optimal membrane properties. Furthermore, the self-made membrane substrate was developed to compare with the commercially available membrane.