In Vietnam, reclaimed asphalt pavement technology is considered as the key to reduce the cost of pavement construction, and decrease the industrial waste from flexible pavement rehabilitation. Ministry of Transportation has concentrated to develop RAP technology since 2008. As a result, there are three trademark of recycling technologies applied in Vietnam such as Wirtgen (Germany), Hall Brothers (U.S.), and Sakai (Japan). This paper is focused on asphalt pavement investigation of field and laboratory tests from Cold In-place recycling technology. The laboratory tests carried out on the material were conventional tests including Marshall stability, indirect tensile strength... Field data was collected using a Benkelman beam and core specimens for indirect tensile strength test.

This research bases on primary sources written in Sinograph and Nôm (vernacular Vietnamese script) by scholars in premodern Vietnam, to make a pedagogical analysis on the role of the Sanzijing (三字經) in Literary Sinitic education in premodern Vietnam. Thus, this paper claims, the study of the civil service examination in premodern Vietnam should be covered from its starting point, the primary level, to fill the gap of a partial concern by modern scholars of the high level.

Twenty-six species of the subfamily Herminiinae were recognized from the lepidopteran surveys in Mt. Changbai (China) during 1999-2004. Among them, six species are reported for the first time from China: Paracolax fascialis (Leech), P. fentoni (Butler), Polypogon gryphalis Herrich-Schäffer, Sinarella japonica (Butler), S. punctalis (Herz), and S. cristulalis (Staudinger), and seven species are new to Mt. Changbai: Hadennia incongruens (Butler), Paracolax tristalis (Fabricius), Paracolax trilinealis (Bremer), Idia quadra (Graeser), Hydrillodes morosa (Butler), Herminia grisealis [Denis & Schiffermüller], and Sinarella nigrisigna (Leech). For the six newly reported species from China, taxonomical notes, color images of adults, and figures of the male or the female genitalia are provided.

The paper aims to measure stock price volatility on Ho Chi Minh stock exchange (HSX). We apply symmetric models (GARCH, GARCH-M) and asymmetry (EGARCH and TGARCH) to measure stock price volatility on HSX. We used time series data including the daily closed price of VN-Index during 1/03/2001–1/03/2019 with 4375 observations. The results show that GARCH (1,1) and EGARCH (1,1) models are the most suitable models to measure both symmetry and asymmetry volatility level of VN-Index. The study also provides evidence for the existence of asymmetric effects (leverage) through the parameters of TGARCH model (1,1), showing that positive shocks have a significant effect on the conditional variance (volatility). This result implies that the volatility of stock returns has a big impact on future market movements under the impact of shocks, while asymmetric volatility increase market risk, thus increase the attractiveness of the stock market. The research results are useful reference information to help investors in forecasting the expected profit rate of the HSX, and also the risks along with market fluctuations in order to take appropriate adjust to the portfolios. From this study’s results, we can see risk prediction models such as GARCH can be better used in risk forecasting especially.