http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Du D. Nguyen (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Search-based Sentiment and Stock Market Reactions: An Empirical Evidence in Vietnam
Nguyen, Du D.,Pham, Minh C. Korea Distribution Science Association 2018 The Journal of Asian Finance, Economics and Busine Vol.5 No.4
The paper aims to examine relationships between search-based sentiment and stock market reactions in Vietnam. This study constructs an internet search-based measure of sentiment and examines its relationship with Vietnamese stock market returns. The sentiment index is derived from Google Trends' Search Volume Index of financial and economic terms that Vietnamese searched from January 2011 to June 2018. Consistent with prediction from sentiment theories, the study documents significant short-term reversals across three major stock indices. The difference from previous literature is that Vietnam stock market absorbs the contemporaneous decline slower while the subsequent rebound happens within a day. The results of the study suggest that the sentiment-induced effect is mainly driven by pessimism. On the other hand, optimistic investors seem to delay in taking their investment action until the market corrects. The study proposes a unified explanation for our findings based on the overreaction hypothesis of the bearish group and the strategic delay of the optimistic group. The findings of the study contribute to the behavioral finance strand that studies the role of sentiment in emerging financial markets, where noise traders and limits to arbitrage are more obvious. They also encourage the continuous application of search data to explore other investor behaviors in securities markets.
-
Search-based Sentiment and Stock Market Reactions: An Empirical Evidence in Vietnam
Du D. Nguyen,Minh C. Pham 한국유통과학회 2018 The Journal of Asian Finance, Economics and Busine Vol.5 No.4
The paper aims to examine relationships between search-based sentiment and stock market reactions in Vietnam. This study constructs an internet search-based measure of sentiment and examines its relationship with Vietnamese stock market returns. The sentiment index is derived from Google Trends’ Search Volume Index of financial and economic terms that Vietnamese searched from January 2011 to June 2018. Consistent with prediction from sentiment theories, the study documents significant short-term reversals across three major stock indices. The difference from previous literature is that Vietnam stock market absorbs the contemporaneous decline slower while the subsequent rebound happens within a day. The results of the study suggest that the sentiment-induced effect is mainly driven by pessimism. On the other hand, optimistic investors seem to delay in taking their investment action until the market corrects. The study proposes a unified explanation for our findings based on the overreaction hypothesis of the bearish group and the strategic delay of the optimistic group. The findings of the study contribute to the behavioral finance strand that studies the role of sentiment in emerging financial markets, where noise traders and limits to arbitrage are more obvious. They also encourage the continuous application of search data to explore other investor behaviors in securities markets.
-
Problematic effects of antibiotics on anaerobic treatment of swine wastewater
Cheng, D.L.,Ngo, H.H.,Guo, W.S.,Chang, S.W.,Nguyen, D.D.,Kumar, S. Mathava,Du, B.,Wei, Q.,Wei, D. Elsevier 2018 Bioresource technology Vol.263 No.-
<P><B>Abstract</B></P> <P>Swine wastewaters with high levels of organic pollutants and antibiotics have become serious environmental concerns. Anaerobic technology is a feasible option for swine wastewater treatment due to its advantage in low costs and bioenergy production. However, antibiotics in swine wastewater have problematic effects on micro-organisms, and the stability and performance of anaerobic processes. Thus, this paper critically reviews impacts of antibiotics on pH, COD removal efficiencies, biogas and methane productions as well as the accumulation of volatile fatty acids (VFAs) in the anaerobic processes. Meanwhile, impacts on the structure of bacteria and methanogens in anaerobic processes are also discussed comprehensively. Furthermore, to better understand the effect of antibiotics on anaerobic processes, detailed information about antimicrobial mechanisms of antibiotics and microbial functions in anaerobic processes is also summarized. Future research on deeper knowledge of the effect of antibiotics on anaerobic processes are suggested to reduce their adverse environmental impacts.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Antibiotic impacts on performance/microbes of anaerobic processes were reviewed. </LI> <LI> Higher dose and combined antibiotics had more inhibition on anaerobic processes. </LI> <LI> Antibiotics inhibited the VFAs degrading bacteria and acetoclastic methanogens. </LI> <LI> Acetoclastic methanogens shifted to hydrogenotrophic methanogens due to antibiotics. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
-
Structural and Functional Analysis of a β<sub>2</sub>-Adrenergic Receptor Complex with GRK5
Komolov, Konstantin E.,Du, Yang,Duc, Nguyen Minh,Betz, Robin M.,Rodrigues, Joã,o P.G.L.M.,Leib, Ryan D.,Patra, Dhabaleswar,Skiniotis, Georgios,Adams, Christopher M.,Dror, Ron O.,Chung, Ka Young Cell Press 2017 Cell Vol. No.
<P><B>Summary</B></P> <P>The phosphorylation of agonist-occupied G-protein-coupled receptors (GPCRs) by GPCR kinases (GRKs) functions to turn off G-protein signaling and turn on arrestin-mediated signaling. While a structural understanding of GPCR/G-protein and GPCR/arrestin complexes has emerged in recent years, the molecular architecture of a GPCR/GRK complex remains poorly defined. We used a comprehensive integrated approach of cross-linking, hydrogen-deuterium exchange mass spectrometry (MS), electron microscopy, mutagenesis, molecular dynamics simulations, and computational docking to analyze GRK5 interaction with the β<SUB>2</SUB>-adrenergic receptor (β<SUB>2</SUB>AR). These studies revealed a dynamic mechanism of complex formation that involves large conformational changes in the GRK5 RH/catalytic domain interface upon receptor binding. These changes facilitate contacts between intracellular loops 2 and 3 and the C terminus of the β<SUB>2</SUB>AR with the GRK5 RH bundle subdomain, membrane-binding surface, and kinase catalytic cleft, respectively. These studies significantly contribute to our understanding of the mechanism by which GRKs regulate the function of activated GPCRs.</P> <P><B>PaperClip</B></P> <P>Display Omitted</P> <P><B>Highlights</B></P> <P> <UL> <LI> GRK5-β<SUB>2</SUB>AR binding is enhanced by receptor and kinase ligands and acidic lipids </LI> <LI> GRK5 binding to the β<SUB>2</SUB>AR involves a multi-site interaction </LI> <LI> Receptor binding triggers substantial conformational changes in GRK5 </LI> <LI> RH/catalytic domain separation in GRK5 is essential for receptor phosphorylation </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>
스콜라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
