Nguyen Ngoc Thi

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This article provides a first empirical study of the determinants of the interdisciplinarity of academic researchers production. For that purpose we measure interdisciplinarity as the diversity of their research production across scientific domains. Our evidence is based on more than nine hundred permanent researchers employed by a large French university(More)
  • Tran Thi Minha, Nguyen Ngoc Thi, Hoang Anhb, Vu Dao Thanga, Tran Van Sungb
  • 2010
Two new triterpenoids, named 7α ,21α-dihydroxyfriedelane-3-one (1) and 7α ,29-dihydroxyfriedelane-3-one (2) have been isolated from the ethyl acetate extract of the stems of Salacia chinensis besides the known triterpenoid 21α ,30-dihydroxyfriedelane-3-one (3). The structures of the isolated compounds were elucidated on the basis of spectral analysis. Eight(More)
White or light purple flower color Torenia (Torenia fournieri Lind.) varieties were successfully developed from the parental variety having violet flowers. This was accomplished by reducing Fe micronutrient in the culture media for the induction of in vitro flowering. The flower induction was highest in modified Murashige and Skoog (MS) medium containing ½(More)
For the regeneration of shoots, leaf segments of Rehmannia elata were cultured on Murashige and Skoog (MS) medium supplemented with various concentrations of 6-benzylaminopurine (BAP) (1, 2, or 4 mg L) with or without 1-naphthalene acetic acid (NAA) used at 0.1 or 0.5 mg L. Regenerated shoots were obtained from the leaf cultures at all BAP concentrations(More)
Nguyen Thi Kim Dong, 2005. Evaluation of agro-industrial by-products as protein sources for duck production in the Mekong Delta of Vietnam. Doctor ́s dissertation. ISSN 1652-6880, ISBN 91-576-6980-5. This thesis is based on four studies to determine the nutritive value and ileal and total tract amino acid digestibility of agro-industrial by-products, and(More)
The Asian Institute of Technology is an autonomous postgraduate institution with a highly international student body. The institute has an enrollment of 2000 students from 45 different countries with the majority nationality comprising only 35% of the total student body. Each year we receive applications from students who have completed previous bachelors(More)
Classical spare parts inventory models assume that the same vintage of technology will be utilized throughout the planning horizon. However, replacement often occurs in the form of a new technology. A consequence of such replacements is the rendering of existing spare parts inventories obsolete and the necessity to purchase a new set. This paper aims to(More)
DDoS is one of the most dangerous methods to attack victim network because it uses a vast quantity of distributed agents to make victim paralyze. This paper gives a DDoS defense method which is based on “pushback and communicate” idea (PaC method). When the gateway of victim detects DDoS attack, it has to listen on interfaces to define the neighbors from(More)
In many universities it would be useful to have a database of publications that reflects the research results of the academic staffs. Such a database can be built by automatically retrieve publication information from faculties’ homepage. In this project, we deploy focused crawling to build such a system. We also proposed a new focused crawling heuristics(More)
Evolution of structure of spherical SiO2 nanoparticles upon cooling from the melt has been investigated via molecular-dynamics (MD) simulations under non-periodic boundary conditions (NPBC). We use the pair interatomic potentials which have weak Coulomb interaction and Morse type short-range interaction. The change in structure of SiO2 nanoparticles upon(More)