Three new species of Helicopsyche (Trichoptera, Helicopsychidae) from northern Vietnam, with a key to Helicopsyche species of Vietnam

Three new species of Helicopsyche Siebold, 1856 are described from Vietnam: Helicopsyche melina sp. nov., Helicopsyche meander sp. nov., and Helicopsyche lamnata sp. nov. All species were described from Melinh Station for Biodiversity in the Me Linh District of Vinh Phuc Province. The species were collected mainly in Malaise traps situated across a small stream surrounded by lowland forest. Some individuals were also collected on light in traps situated at the stream bank

The Importance of Automatic Syntactic Features in Vietnamese Named Entity Recognition

This paper presents a state-of-the-art system for Vietnamese Named Entity Recognition (NER). By incorporating automatic syntactic features with word embeddings as input for bidirectional Long Short-Term Memory (Bi-LSTM), our system, although simpler than some deep learning architectures, achieves a much better result for Vietnamese NER. The proposed method achieves an overall F1 score of 92.05% on the test set of an evaluation campaign, organized in late 2016 by the Vietnamese Language and Speech Processing (VLSP) community. Our named entity recognition system outperforms the best previous systems for Vietnamese NER by a large margin.Comment: 7 pages, 9 tables, 3 figures, accepted to PACLIC 201

TEACHERS’ PERCEPTIONS ABOUT POWERPOINT USE AS AN ICT TOOL FOR TEACHING VOCABULARY IN VIETNAM

This paper reports a mixed-methods study designed to explore teachers’ perceptions about using PowerPoint (PPT) as an ICT (Information and Communications Technology) tool in vocabulary teaching in Kien Giang province, Vietnam. The data were collected from the questionnaire and interviews. Participants were sixty EFL teachers from five colleges in Kien Giang province. The findings reveal that participating teachers perceived PowerPoint use in vocabulary instruction as a useful instructional tool; however, there was no significant differences in their perceptions. These participants reported obstacles such as time investment, insufficient knowledge in information technology (IT), and lack of IT facilities. Pedagogical implications are made to encourage the potential use of PPT in vocabulary instruction.  Article visualizations

Tax policy and housing prices: evidence from Vietnam using event study approach

This paper examines the effect of tax policy on housing prices in Vietnam for the period from October 2004 to September 2016 using event study approach. The authors find that all five key changes made to the personal income tax, corporate income tax and non-farm land use tax have caused the housing prices to decline on average 6-11% during the event window, but only the impact of the personal income tax changes is statistically significant. The fact that changes in housing prices are mostly seen prior to the effective date of the tax policy change implies that tax policy change indeed has influenced the housing prices in Vietnam. Although this research has not examined the mechanism through which tax policy has influenced the housing prices, the findings offer some implications for the government in terms of using tax policy for controlling housing prices in Vietnam. The research is also of very few papers in this literature that use the event study approach