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남순열 中央醫學社 1991 中央醫學 Vol.56 No.7
The purpose of this study was to investigate the degree of needs in Junior college nursing students and to analize the relationship of the needs and the general characteristics. The subjects of this study were 97 students of Chinju junior college of nursing. The data was collected by means of a questionaire from November 7 to 13, 1990,were analized by percentage, mean score, F-test, pearson correlation coefficient. The results of this study were as follows; 1. General characteristics of the students: For the total 97 respondents, their main age was as 70.1 percent, 19, 59.8 percent of them had religions, 79.4 percent of them were a student who failed the entrance examination and has been cramming to try again, 80.4 percent of them lived in middle class of socioeconomic status, 71.1 percent of them attend school from their home. Among the motives for selecting nursing college, the highest response was a low grade of credit. In the response of satisfaction in department of nursing science, 78.4 percent of students were not satisfied with their study. In the response of satisfaction in college life, 58.8 percent of students were not satisfied with their life. 2. The highest mean score was the need of affiliation among need variable. 3. There was a significant difference in the relationship of the need of sex and the socioeconomic status of them (P <.05). 4. There was a significant difference in the relationship of the need of agression and the socioeconomic status of them (P < .05). 5. There was a significant correlation in the greater part of the need variable and the highest was in the need of achievement & the need of dominance (?= .6852, P <.001).
역류성 후두염의 증상을 가진 환자에서의 24시간 이중 탐침 식도 산도 측정
남순열,박선태,정훈용 대한기관식도과학회 1997 大韓氣管食道科學會誌 Vol.3 No.1
The term laryngopharyngeal reflux (LPR) refers to the backflow of food or stomach acid back up into the larynx (the voice box) or the pharynx (the throat). Esophagopharyngeal reflux is suggested as an etiologic factor in laryngeal disease. To examine a possible esophageal basis for laryngopharyngeal symptoms, we studied 48 patients with persistent laryngopharyngeal symptoms, and 12 relative control subjects. Patients were evaluated for cervical symptoms by questionnaire and underwent gastrofiberoscopy, fiberoptic laryngoscopy, esophageal manometry and 24-hour ambulatory double-probe pH monitoring. We found LPR in fourteen out of 48 patients with cervical symptoms (29%). The LPR group consisted of nine men and five women. The symptoms that LPR patients complained were throat lump sensation, hoareness, sore throat, throat clearing, chronic coughing and dysphagia in order of frequency, and they were not different significantly from non-LPR patients. The laryngoscopic findings in LPR patients were posterior erythema, laryngeal edema and diffuse erythema, and there was also no significant difference between LPR group and non-LPR group. There was statistically significant correlation between LPR and gastroesophageal reflux (GER). We concluded that there is no pathognomonic symptoms or laryngoscopic findings in diagnosis of LPR, and 24-hour ambulatory double-probe pH monitoring is an essential diagnostic tool in LPR.
Fundamental Frequency Estimation in Power Systems Using Complex Prony Analysis
남순열,이동규,강상희,안선주,최준호 대한전기학회 2011 Journal of Electrical Engineering & Technology Vol.6 No.2
A new algorithm for estimating the fundamental frequency of power system signals is presented. The proposed algorithm consists of two stages: orthogonal decomposition and a complex Prony analysis. First, the input signal is decomposed into two orthogonal components using cosine and sine filters, and a variable window is adapted to enhance the performance of eliminating harmonics. Then a complex Prony analysis that is proposed in this paper is used to estimate the fundamental frequency by approximating the cosine-filtered and sine-filtered signals simultaneously. To evaluate the performance of the algorithm, amplitude modulation and harmonic tests were performed using simulated test signals. The performance of the algorithm was also assessed for dynamic conditions on a singlemachine power system. The Electromagnetic Transients Program was used to generate voltage signals for a load increase and single phase-to-ground faults. The performance evaluation showed that the proposed algorithm accurately estimated the fundamental frequency of power system signals in the presence of amplitude modulation and harmonics.