Due to the interaction between lexical tones and intonation in Chinese speech melody, the contour patterns of Chinese IPs （intonational phrases） have long been an intriguing yet complicated subject. Within the AM （...Due to the interaction between lexical tones and intonation in Chinese speech melody, the contour patterns of Chinese IPs （intonational phrases） have long been an intriguing yet complicated subject. Within the AM （Autosegmental-Metrical） framework, this paper makes an empirical study on the subject based on a small-scale database of 22 standard Chinese news stories. A five-degree D value system is proposed for data normalization so that various contour patterns of IPs can be identified and compared despite complications in pitch register and pitch range. The major findings are： Chinese IPs mainly comprise 2, 3, or 4 ips （intermediate phrases）. And the contour patterns of Chinese IPs suggest that the statement intonation in Chinese is primarily indicated by the near-bottom Dmin value of the last ip. Meanwhile, when the primary indicator is not typical, the falling trend of the last part of the top-line can serve as a compensatory perceptual clue.展开更多
Objectives Postoperative atrial fibrillation （AF） has been associated with less favorable outcomes in patients undergoing coronary artery bypass graft surgery （CABG） and may result in increased post-operative morb...Objectives Postoperative atrial fibrillation （AF） has been associated with less favorable outcomes in patients undergoing coronary artery bypass graft surgery （CABG） and may result in increased post-operative morbidity and mortality. A systematic review and meta-analysis of published studies was conducted to examine the risk factors of occurrence AF after CABG. Methods Using the Medline database, the Cochrane clinical trials database and online clinical trial databases, we reviewed all randomized controlled trials （RCTs） and observational studies examining the risk factors of occurrence of AF after CABG. We searched for literature published April 2009 or earlier. Results Our review identified 8 studies （observational studies）, involving 14548 patients, that examined the risk factors of occurrence of AF after CABG. Although studies provide conflicting results, the overall outcomes suggests that advanced age, previous hypertension, numbers of bridge vessels may increase the occurrence of AF after CABG, while no significant difference of diabetes, preoperative myocardial infarction, and preoperative medication of 13 -Blocker have been observed between the AF patients and no-AF patiens. Conclusions Patients with advanced age, previous hypertension and more numbers of bridge vessels had higher risk for the occurrence of AF after CABG, and perioperative medication and care must be intensified to decrease the postoperative occurrence ofAF（J Geriatr Cardio12009; 6：162-167）.展开更多
文摘Due to the interaction between lexical tones and intonation in Chinese speech melody, the contour patterns of Chinese IPs （intonational phrases） have long been an intriguing yet complicated subject. Within the AM （Autosegmental-Metrical） framework, this paper makes an empirical study on the subject based on a small-scale database of 22 standard Chinese news stories. A five-degree D value system is proposed for data normalization so that various contour patterns of IPs can be identified and compared despite complications in pitch register and pitch range. The major findings are： Chinese IPs mainly comprise 2, 3, or 4 ips （intermediate phrases）. And the contour patterns of Chinese IPs suggest that the statement intonation in Chinese is primarily indicated by the near-bottom Dmin value of the last ip. Meanwhile, when the primary indicator is not typical, the falling trend of the last part of the top-line can serve as a compensatory perceptual clue.
文摘Objectives Postoperative atrial fibrillation （AF） has been associated with less favorable outcomes in patients undergoing coronary artery bypass graft surgery （CABG） and may result in increased post-operative morbidity and mortality. A systematic review and meta-analysis of published studies was conducted to examine the risk factors of occurrence AF after CABG. Methods Using the Medline database, the Cochrane clinical trials database and online clinical trial databases, we reviewed all randomized controlled trials （RCTs） and observational studies examining the risk factors of occurrence of AF after CABG. We searched for literature published April 2009 or earlier. Results Our review identified 8 studies （observational studies）, involving 14548 patients, that examined the risk factors of occurrence of AF after CABG. Although studies provide conflicting results, the overall outcomes suggests that advanced age, previous hypertension, numbers of bridge vessels may increase the occurrence of AF after CABG, while no significant difference of diabetes, preoperative myocardial infarction, and preoperative medication of 13 -Blocker have been observed between the AF patients and no-AF patiens. Conclusions Patients with advanced age, previous hypertension and more numbers of bridge vessels had higher risk for the occurrence of AF after CABG, and perioperative medication and care must be intensified to decrease the postoperative occurrence ofAF（J Geriatr Cardio12009; 6：162-167）.
