UNIX applications not wishing to block when doing I/O often use the select() system call, to wait for events on multiple file descriptors. The select() mechanism works well for small-scale applications, but scales poorly as the number of file descriptors increases. Many modern applications, such as Internet servers, use hundreds or thousands of file descriptors, and suffer greatly from the poor...

Protection monitors synthesized from plan causal structure provide execution systems with information necessary to detect potential failures early during execution. By detecting early, the execution system is able to address these problems and keep the execution on track. When the execution system finds that the necessary repairs are beyond its capabilities, early detection gives the planning s...

Due to the low risk of not insuring a healthy child for a short, finite period of time, it’s plausible that SCHIP mandatory wait periods, where a child must forgo private insurance for several months before enrolling in SCHIP, do not provide enough incentive for parents to keep their children enrolled in private insurance. Using data from the 1996 Survey of Income and Program Participation (SIP...

摘要 語言教學方法主要是由以互動理論 (interactionist theories) 為基礎的溝通式教學法 (communicative language teaching) 所主導。因此,如果要針對學生個別的問題進行糾正,需要甚 多的時間,很難採用雙向互動的教學方法。要解決這樣的問題,電腦輔助語言學習系統 (Computer Assisted Language Learning System, CALL) 是個可行的方案。利用語音辨識 (Automatic Speech Recognition, ASR) 技術的電腦輔助發音訓練系統 (Computer Assisted Pronunciation Training, CAPT) 不但可以提供一個沒有壓力的環境,讓學生反覆的練習,同時也能針對學生個別的發音 問題,提供回饋與糾正的功能。本論文應用語音辨識、錯誤型態分析、及三維唇型...

Time synchronization plays a key role in wireless sensor networks. Time synchronization is realized by those messages that are time-stamped. But there are several delay times during transmission after time stamping. These delay times are uncertain and contribute directly to synchronization error. Therefore, we aim at studying the influence of uncertainties on time synchronization in this paper....

active agents are currently approved for market or under active investigation in different clinical trials. However, recent findings have exposed the fatal side effects directly associated with drugtherapy based on COX-2 inhibition. Considering these possible harmful outcomes, a range of novel therapeutically relevant biological targets which particularly includes NF-κB and JAK/STAT signaling p...