http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최장발성폐기능저하를 동반한 일측성 성대마비 환자에서의 S/Z Ratio와 최장 발성시간(Maximum Phonation Time)의 유용성 비교
박준표,정고은,강병철,김성태,남순열,김상윤,노종렬,최승호,Park, Joon Pyo,Jeong, Go-Eun,Kang, Byung Chul,Kim, Seong-Tae,Nam, Soon Yuhl,Kim, Sang-Yoon,Roh, Jong-Lyel,Choi, Seung-Ho 대한후두음성언어의학회 2012 대한후두음성언어의학회지 Vol.23 No.2
Background and Objectives : MPT is directly related to degree of glottal closure. So it is widely used in the assessment of glottal closure with unilateral vocal fold paralysis. But MPT could be influenced not only by glottal closure but also by pulmonary function. So MPT might not reflect glottal closure in UVFP with decreased pulmonary function. The purpose of the study is to evaluate usefulness of MPT and ratio of /s/ time to /z/ time before and after injection laryngoplasty in UVCP with decreased pulmonary function. Materials and Methods : This study involved 34 patients with unilateral vocal fold paralysis : with decreased pulmonary function in group A (n=15) : with normal pulmonary function in group B (n=19). All patients underwent injection laryngoplasty. Paramters of perceptual analysis, acoustic analysis, aerodynamic analysis, videostroboscopy were compared between two groups. Results : Breathness and asthenic scale, G scale of perceptual analysis were significantly improved in both groups. Glottal gap index were significantly decreased after injection in both groups. In aerodynamic analysis, MPT was improved after injection laryngoplasty in both groups, but S/Z ratio was improved only in group B. In correlation analysis, /s/ time was not correlated with pulmonary function. Conclusion : S/Z ratio reflects neither the pulmonary function nor the glottal clousure properly. MPT is more useful indicator than S/Z ratio to evaluate vocal fold paralysis even with decreased pulmonary function.
Permanence of an impulsive food web system with Holling-type II functional responses
박준표,백헌기,도영해 한국데이터정보과학회 2009 한국데이터정보과학회지 Vol.20 No.1
In this paper, we are studying the property for permanence of a three species food chain system with impulsive perturbations and Holling type II functional response, species which is important concept or property in ecological systems. Specially, we give the conditions for the permanence of this system. To do it, we consider the comparison method which is typical skill happened in impulsive differential inequalities. In addition, we reaffirm our results by using a numerical example.