This paper describes the design and development of a wireless LAN (WLAN) access point based on Bluetooth and uClinux. To make the best use of high-speed serial communication capability, several methods such as modifyi...This paper describes the design and development of a wireless LAN (WLAN) access point based on Bluetooth and uClinux. To make the best use of high-speed serial communication capability, several methods such as modifying baud-rate of serial port driver, utilizing buffer area and adding flow-control were adopted. After analysis of scheduling and interruption handling, modifying the timer's parameters was put forward as a method to control the timer interrupt. In this way, data throughput and system stability were enhanced. Meanwhile, migration of the Bluetooth protocol stack was detailed and some successful applications of LAN access point were presented.展开更多
This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased ...This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased pre-task planning time strongly improves fluency and accuracy of self-repairs for both lexical and syntactic errors in the advanced group,but enhanced fluency and accuracy are not witnessed in the intermediate group as planning time increases.The differences are mainly due to the fact that some intermediate learners are not well equipped with the appropriate way of preparation for oral presentation tasks since some write down their ideas in Chinese.Thus errors will increasingly emerge in the transfer.Besides,they usually give priority to accuracy while neglecting fluency.展开更多
Task-planning studies have mostly been conducted using quantitative methods, not qualitative. However, the actual planning behaviors by learners could be overlooked by quantitative research which focuses mostly on pla...Task-planning studies have mostly been conducted using quantitative methods, not qualitative. However, the actual planning behaviors by learners could be overlooked by quantitative research which focuses mostly on planning outcomes rather than the processes. This study aims to bridge this gap by exploring learner behavioral patterns in pre-task planning as well as the under-investigated area of topic familiarity by drawing upon interview data. This consists of a comparison between the task-external and task-internal readiness constructs proposed in Bui＇s （2014） task-readiness framework. Eight undergraduate students in Hong Kong completed two speaking tasks （a familiar and an unfamiliar task）, followed by retrospective interviews. Though largely confirming previous （but parsimonious） research on task planning behaviors, this study discovered three major findings that had not been covered well in previous literature. First, while past studies focused on the psycholinguistic processes of task planning, these participants extensively reported its affective influences. Next, most participants reported their overall intended emphasis was on accuracy. These reports contradict general quantitative research results which suggest that task planning often leads to complexity, not accuracy. Finally, the lack of planning time as task-external readiness can be partly compensated for by topic familiarity as task-internal readiness. These issues along with their relevant implications in teaching and learning are discussed in this study.展开更多
基金NationalKeyTechnologiesR&DProgram (No .2 0 0 1BA10 2C)
文摘This paper describes the design and development of a wireless LAN (WLAN) access point based on Bluetooth and uClinux. To make the best use of high-speed serial communication capability, several methods such as modifying baud-rate of serial port driver, utilizing buffer area and adding flow-control were adopted. After analysis of scheduling and interruption handling, modifying the timer's parameters was put forward as a method to control the timer interrupt. In this way, data throughput and system stability were enhanced. Meanwhile, migration of the Bluetooth protocol stack was detailed and some successful applications of LAN access point were presented.
文摘This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased pre-task planning time strongly improves fluency and accuracy of self-repairs for both lexical and syntactic errors in the advanced group,but enhanced fluency and accuracy are not witnessed in the intermediate group as planning time increases.The differences are mainly due to the fact that some intermediate learners are not well equipped with the appropriate way of preparation for oral presentation tasks since some write down their ideas in Chinese.Thus errors will increasingly emerge in the transfer.Besides,they usually give priority to accuracy while neglecting fluency.
基金supported by an RGC grant that the first author received from the University Grants Committee of Hong Kong (Ref. No: UGC/FDS14/H01/14)
文摘Task-planning studies have mostly been conducted using quantitative methods, not qualitative. However, the actual planning behaviors by learners could be overlooked by quantitative research which focuses mostly on planning outcomes rather than the processes. This study aims to bridge this gap by exploring learner behavioral patterns in pre-task planning as well as the under-investigated area of topic familiarity by drawing upon interview data. This consists of a comparison between the task-external and task-internal readiness constructs proposed in Bui＇s （2014） task-readiness framework. Eight undergraduate students in Hong Kong completed two speaking tasks （a familiar and an unfamiliar task）, followed by retrospective interviews. Though largely confirming previous （but parsimonious） research on task planning behaviors, this study discovered three major findings that had not been covered well in previous literature. First, while past studies focused on the psycholinguistic processes of task planning, these participants extensively reported its affective influences. Next, most participants reported their overall intended emphasis was on accuracy. These reports contradict general quantitative research results which suggest that task planning often leads to complexity, not accuracy. Finally, the lack of planning time as task-external readiness can be partly compensated for by topic familiarity as task-internal readiness. These issues along with their relevant implications in teaching and learning are discussed in this study.
