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Associations Among Different Types of Quantitative Pain Measures in TMD Patients
박지운,김용우,정진우,Park, Ji-Woon,Kim, Yong-Woo,Chung, Jin-Woo Korean Academy of Orofacial Pain and Oral Medicine 2007 Journal of Oral Medicine and Pain Vol.32 No.4
The aims of this study were to investigate the relationships among several types of thermal pain thresholds, and pressure pain thresholds. This study was designed to examine whether there were associations among different types of pain thresholds, and among different recording sites for each pain threshold measurement. Pain sensitivity thresholds including cold pain threshold (CPT), heat pain threshold (HPT), heat pain tolerance threshold (PTT), and pressure pain threshold (PPT) of 56 subjects with symptoms of temporomandibular disorders were measured on temporal muscle, masseter muscle, TMJ, and tibial areas. Thermal pain thresholds including CPT, HPT, and PTT did not show any gender differences. However, women showed significantly lower PPTs than men on all recording sites. Three thermal pain thresholds including CPT, HPT, and PTT showed weak to high correlations on all the recording sites (r= 0.324 to 0.754, p<0.05). PPTs did not show any significant correlations between each thermal pain threshold. The pain threshold of each recording site showed weak to high correlations in all pain threshold measures (r= 0.284 to 0.878, p<0.05). Our study demonstrated that thermal pain thresholds, and pain tolerance thresholds were significantly correlated, but did not show any correlation between thermal pain thresholds and pressure pain thresholds. There were relatively high correlations among the pain thresholds of different recording sites.
박지운 ( Park Ji-woon ) 한국공연문화학회 2021 공연문화연구 Vol.- No.43
천수바라무는 불교의식에 있어 중요한 의식무 중 하나이다. 이글에서는 영남지역에서 연행되는 천수바라무의 운영원리에 대하여 연구하였다. 신묘장구대다라니에 맞춰 7분가량 무패턴으로 연행되는 천수바라무를 춤단어로 구분하고 이들의 조합이 어떻게 이루어지는지 그리고 춤동작의 변화 운영원리를 다양한 자료를 통하여 분석하였다. 영남지역의 천수바라무는 인사하기, 실어올리기, 180°돌며 실어올리기, 바라가르기, 양손바라가르기, 360°돌기, 바라치기 등 총 7개의 춤단어로 구성되어 있고 이들은 신묘장구대다라니의 글자 수에 맞춰 조합을 한다. 춤동작의 변화는 신묘장구대다라니의 글자가 같은 글자 수로 연속하여 나올 때, 2에서 3으로 바뀔 때, 3에서 2로 바뀔 때, 2, 3이 연속하여 바뀔 때 등으로 크게 네 가지의 변화로 운영원리를 알 수 있다. Cheonsubara Dance is one of the most important ceremonies in Buddhist rituals. This paper is a study on principles of Cheonsubara Dance in Yeongnam. This also distinguishes the Cheonsubara Dance performed for about 7 minutes with no patterns according to 'The Great Dharani of Spiritually Sublime Phrases' by dance words, and analizes its combinations and principles. Cheonsubara Dance in Yeongnam consists of 7 dance words(Greeting, Carrying, Carrying with 180° rotation, Bara-Garugi, Bara-Garugi with both hands, rotate once, Bara-chigi), and put together according to the number of letters from 'The Great Dharani of Spiritually Sublime Phrases'. Usually, the principles can be seen through 4 types of changes from the dance: 1) When letters of 'The Great Dharani of Spiritually Sublime Phrases' appear consecutively with the same number of characters, 2) When a two-letter word turns into a three-letter word, 3) When the opposite of 2) occurs, 4) When 2∼3 letter words change in a row.
박지운(Ji Woon Park) 대한치과의사협회 2015 대한치과의사협회지 Vol.53 No.4
Sleep related breathing disorders(SRBDs) are a group of diseases accompanied by difficulties in respiration and ventilation during sleep. Central sleep apnea, obstructive sleep apnea(OSA), sleep-related hypoventilation, and hypoxemia disorder are included in this disease entity. OSA is known to be the most common SRBDs and studies show its significant correlation with general health problems including hypertension, arrhythmia, diabetes, and metabolic syndrome. The diagnostic process of OSA is composed of physical examinations of the head and neck area and also the oral cavity. Radiologic studies including cephalography, CT, MRI, and fluoroscopy assist in identifying the site of obstruction. However, polysomnography(PSG) is still considered the gold standard for the diagnosis of OSA since it offers both qualitative and quantitative recording of the events during a whole night’s sleep. The dentist who is trained in sleep medicine can easily identify patients with the risk of OSA starting from simple questions and screening questionnaires. Diagnosis is the first step to treatment and considering the high rate of under-diagnosis for OSA the dentist may play a substantial role in the diagnosis and treatment of OSA which will eventually lead to the well-being of the patient as a whole person. So the objective of this article is to assist dental professionals in gaining knowledge and insight of the diagnostic measures for OSA including PSG.
Effect of a Mouthwash Containing Cetylpyridinium and Zinc Chloride on Oral Malodor
김주식,박지운,김대중,김영구,이정윤,Kim, Ju-Sik,Park, Ji-Woon,Kim, Dae-Jung,Kim, Young-Ku,Lee, Jeong-Yun Korean Academy of Orofacial Pain and Oral Medicine 2011 Journal of Oral Medicine and Pain Vol.36 No.4
The aim of this study is to clinically evaluate the effect of a mouthwash containing cetylpyridinium and zinc chloride on reduction of morning oral malodor in healthy subjects measured by organoleptic measurement and a portable sulfide monitor. A total of 8 healthy non-smoking male volunteers were enrolled in this study of crossover design consisting of two experimental phases. The subjects were instructed to rinse the mouth with 10 mL of the experimental mouthwash containing cetylpyridinium and zinc chloride for 30 seconds at the first phase. At the second phase after a one-week washout period, each subject rinsed with distilled water as a control. All experiments were conducted at around 8:30 a.m. and oral malodor was measured using organoleptic measurement and a portable sulfide monitor just before rinsing with the experimental mouthwash or control (baseline), 1 hr, 2 hrs, and 3 hrs after rinsing. The mouthwash containing cetylpyridinium and zinc chloride reduced morning oral malodor up to 3 hrs after rinsing. Organoleptic score and concentrations of volatile sulfur compounds after use of the experimental mouthwash significantly decreased with time, and the decreases were significantly different between the mouthwash and control. In conclusion, the mouthwash containing cetylpyridinium and zinc chloride is significantly effective on reduction of morning oral malodor in healthy subjects by 3 hrs.
굴삭 자동화를 위한 레이저 스캐너 기반의 3차원 객체 탐지 알고리즘의 개발
유현석,박지운,최윤녕,김영석,Yoo, Hyun-Seok,Park, Ji-Woon,Choi, Youn-Nyung,Kim, Young-Suk 한국건설관리학회 2011 한국건설관리학회 논문집 Vol.12 No.6
2006년부터 한국에서 개발중인 지능형 굴삭 시스템(IES)은 이동, 굴삭, 상차를 포함하는 굴삭 작업 일련의 과정을 전자동으로 실현하기 위한 프로젝트로서, 굴삭 로봇 주변 지형의 3차원 모델링과 상차트럭의 위치, 사람의 접근, 이동경로상의 장애물 등의 객체를 정확하게 탐지하는 기술은 굴삭 자동화 장비의 작업 품질과 안전성 확보 측면에서 필수적으로 요구되는 핵심 요소 기술이라 할 수 있다. 이 연구의 목적은 레이저 스캐닝 시스템을 이용하여 지능형 굴삭 로봇 주변의 지형과 객체를 3차원으로 탐지함으로써 자동화 굴삭 작업의 품질과 안전성을 확보하는 데 있다. 본 연구에서는 굴삭기 주변의 3차원 지형으로부터 객체의 위치, 높이, 너비, 형상 정보를 추출하는 알고리즘을 제안하였으며, 실제 토공현장을 대상으로 한 실험을 통하여 알고리즘의 성능을 검증하였다. The intelligent excavating system(IES), the development in South Korea of which has been underway since 2006, aims for the full-scale automation of the excavation process that includes a series of tasks such as movement, excavation and loading. The core elements to ensure the quality and safety of the automated excavation equipment include 3D modeling of terrain that surrounds the excavating robot and the technology for detecting objects accurately(i.e., for detecting the location of nearby loading trucks and humans as well as of obstacles positioned on the movement paths). Therefore the purpose of this research is to ensure the quality and safety of automated excavation detecting the objects surrounding the excavating robot via a 3D laser scanning system. In this paper, an algorithm for estimating the location, height, width, and shape of objects in the 3D-realized terrain that surrounds the location of the excavator was proposed. The performance of the algorithm was verified via tests in an actual earthwork field.
한국어판 측두하악장애 연구진단기준 (RDC/TMD) 설문지의 신뢰도에 관한 연구
손병진,박민우,박지운,정성창,정진우,Sohn, Byung-Jin,Park, Min-Woo,Park, Ji-Woon,Chung, Sung-Chang,Chung, Jin-Woo Korean Academy of Orofacial Pain and Oral Medicine 2008 Journal of Oral Medicine and Pain Vol.33 No.4
Objectives: The aim of this study was to analyze the reliability of the Korean language version of the Research Diagnostic Criteria for Temporomandibular Disorders(RDC/TMD) axis II questionnaire among TMD patients. Methods: The Korean version of the RDC/TMD questionnaire was distributed to 154 TMD patients(31 men, 123 women) who visited Seoul National University Dental Hospital. The test-retest reliability was also assessed among the same subjects with a one- or two-week time interval. The subjects did not receive any form of therapy until the retest administration was completed. Results: The internal consistency reliability of pain intensity, disability score, jaw disability, and psychosocial status were 0.92, 0.94, 0.68, and 0.94, respectively using the Cronbach's alpha coefficient of the 1st test. Test-retest reliability coefficients of each items of the questionnaire ranged from 0.40 to 0.94 assessed with kappa value, and the intra-class correlation coefficient(ICC) for each subscale ranged from 0.81 to 0.93. Test-retest reliability coefficient of the graded chronic pain(GCP) scale was 0.63. Conclusions: The Korean language version of RDC/TMD axis II questionnaire demonstrated good reliability. It can be used as a valuable instrument for the analyses of the psychosocial aspects of the TMD patients in Korea.