Shaping learner contributions(SLC)in teacher's verbal feedback as an essential aspect of classroom interactional com-petence(CIC)to encourage modified language output and negotiation for meaning has been considere...Shaping learner contributions(SLC)in teacher's verbal feedback as an essential aspect of classroom interactional com-petence(CIC)to encourage modified language output and negotiation for meaning has been considered as facilitative for SLA,yet less recognized.This study explores classroom discourse to understand teacher's talk in SLC from two Chinese EFL classrooms,aiming to provide suggestions for EFL classrooms to enhancelearning.By integrating the results fromclose analysis and IDLab,16 SLC feedback strategies have been elicited,such as scaffolding,extending wait-time,code-switching,etc.,most of which are con-sistent with previous studies except for a new discovery,termed as emphasizing knowledge,but it reveals thatthey are not always constructive with respect to CIC.Thus,this study contributes a significant role in helping teachers and teacher education adopt ef-fective teaching practices and in introducing the new thought of CIC into the Chinese EFL context.展开更多
A low mass X-ray binary （LMXB） contains either a neutron star or a black hole accreting materials from its low mass companion star. It is one of the primary astrophysical sources for studying stellar-mass compact ob...A low mass X-ray binary （LMXB） contains either a neutron star or a black hole accreting materials from its low mass companion star. It is one of the primary astrophysical sources for studying stellar-mass compact objects and accreting phe- nomena. As with other binary systems, the most important parameter of an LMXB is the orbital period, which allows us to learn about the nature of the binary system and constrain the properties of the system＇s components, including the compact ob- ject. As a result, measuring the orbital periods of LMXBs is essential for investigating these systems even though fewer than half of them have known orbital periods. This article introduces the different methods for measuring the orbital periods in the X-ray band and reviews their application to various types of LMXBs, such as eclipsing and dipping sources, as well as pulsar LMXBs.展开更多
文摘Shaping learner contributions(SLC)in teacher's verbal feedback as an essential aspect of classroom interactional com-petence(CIC)to encourage modified language output and negotiation for meaning has been considered as facilitative for SLA,yet less recognized.This study explores classroom discourse to understand teacher's talk in SLC from two Chinese EFL classrooms,aiming to provide suggestions for EFL classrooms to enhancelearning.By integrating the results fromclose analysis and IDLab,16 SLC feedback strategies have been elicited,such as scaffolding,extending wait-time,code-switching,etc.,most of which are con-sistent with previous studies except for a new discovery,termed as emphasizing knowledge,but it reveals thatthey are not always constructive with respect to CIC.Thus,this study contributes a significant role in helping teachers and teacher education adopt ef-fective teaching practices and in introducing the new thought of CIC into the Chinese EFL context.
基金partially supported by the Taiwan Ministry of Science and Technology grant NSC 102-2112-M-008-020-MY3
文摘A low mass X-ray binary （LMXB） contains either a neutron star or a black hole accreting materials from its low mass companion star. It is one of the primary astrophysical sources for studying stellar-mass compact objects and accreting phe- nomena. As with other binary systems, the most important parameter of an LMXB is the orbital period, which allows us to learn about the nature of the binary system and constrain the properties of the system＇s components, including the compact ob- ject. As a result, measuring the orbital periods of LMXBs is essential for investigating these systems even though fewer than half of them have known orbital periods. This article introduces the different methods for measuring the orbital periods in the X-ray band and reviews their application to various types of LMXBs, such as eclipsing and dipping sources, as well as pulsar LMXBs.
