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장경진(Kyung-Jin Jang),신철용(Cheolyong Shin),이준용(Junyong Lee),한화택(Hwataik Han) 한국실내환경학회 2011 한국실내환경학회지 Vol.8 No.4
Most of the subway stations are located underground and the indoor air quality can be very poor. IAQ tele-monitoring systems (TMS) have been installed at some of subway stations in Seoul to monitor indoor contaminants, such as carbon dioxide, particulate matters and nitrogen oxides. In this paper, we use CO₂, PM₁₀, NO₂ concentration data collected by TMS in one of the underground stations in Line 4. The correlations are analyzed between the concentrations measured at different locations, such as tunnel, waiting room, and platform to identify the source characteristics. The results indicate there are very weak correlations between CO₂-NO₂ and PM₁₀-NO₂ but strong correlation between CO₂-PM₁₀, because both of PM₁₀ and CO₂ are related to the number of passengers. The comparison of PM₁₀ concentrations before and after the installation of platform screen door (PSD) indicates that considerable amount of particulate matters are entrained from tunnel into platform area. The PSD exhibits positive effects on indoor air quality especially on particulate concentrations. In case of NO₂, there is a strong correlation between indoor and outdoor concentrations. The results presented in this paper can be used to control indoor air quality in subway stations more effectively.
장경진(Jang, Kyung Jin),성윤기(Seoung, Yoon Ki),윤수현(Yoon, Su Hyun),정혜승(Chumg, Hye Seung),김수향(Kim, Soo Hyang),양유리(Yang, You Lee),추상희(Chu, Sang Hui) 한국보건간호학회 2016 韓國保健看護學會誌 Vol.30 No.3
Purpose: The purpose of this study was to investigate the awareness of Korean unification and health care in healthcare professional students. Methods: Descriptive survey design was used, and self administered questionnaires were collected from 567 participants. The data were analyzed using descriptive statistics, chi-square test, ANOVA, and scheffe test. Results: A total of 279(54.4%) students answered that Korean unification is needed. The mean score of attentiveness to Korean unification was 5.27(±2.10) out of 10, and the mean score of interest on health care for unification was 4.28(±2.26). The degree of interest in Korean unification was significantly associated with the degree of health care for unification(p<.001). The mean score of necessity regarding health care education for unification was 5.59(±2.15) out of 10, which was proportional to the degree of interest in the Korean unification(p<.001). The mean score of knowledge regarding North Korea’s medical status was 2.35(±1.17) out of 10. Conclusion: Based on the study results, continuous education about unification as well as health care for unification is required in order to increase awareness of Korean unification and healthcare in students. Furthermore, additional studies to better understand nursing care systems of North Korea and to identify the roles of nurses in the unification process and public healthcare of unified Korea are needed.
장경진(Kyung-Jin Jang) 대한모유수유한의학회 2020 nipple confusion,breastfeeding consultation,IBCLC, Vol.1 No.1
Objectivie: The purpose of this study is to report the effect and safety of Ultrasound-guided Acupotomy on carpal tunnel syndrome. Method: A patient with carpal tunnel syndrome was treated by Ultrasound-guided Acupotomy. For investigating the outcome of the improvement, Tine! s sign, Phalen test, Historical-Objective scale, cross-sectional area were used to measure during treatment. Results: Tinel s sign, Phalen test, Historical-Objective scale were improved after treatment. But cross-sectional area was not improved. Conclusions: Ultrasound-guided acupotomy is effective in improving the symptoms of carpal tunnel syndrome.
지하구조물의 철근부식 평가에 대한 개정 세부지침(터널)의 적용방안
추진호 ( Choo Jin-ho ),장경진 ( Jang Kyung-jin ),김홍균 ( Kim Hong-kyoon ),김형탁 ( Kim Hyung-tak ),윤태국 ( Yoon Tae-gook ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.2
According to the revised guideline(tunnel) in 2009, the corrosion factor for deterioration of reinforced underground structures is changed. Two on-site measurements are arranged and evaluated for the possible application. It is promising method 2D-contour map by half-cell as well as the polarization resistance and galvanostatic/potentiostatic pulse transient response for better application of assessing corrosion condition in revised detail guideline.
Dr. Speech Science를 이용한 정상 및 후두질환 환자의 음향분석
이형석,태경,장경진,김경우,김경래,박철원,Lee, Hyung-Seok,Tae, Kyung,Jang, Kyung-Jin,Kim, Kyung-Woo,Kim, Kyung-Rae,Park, Chul-Won 대한후두음성언어의학회 1997 대한후두음성언어의학회지 Vol.8 No.2
Background : For example, aerodynamic study, vibratory study, acoustic study, neuro-muscular test and psychoacoustic evaluation, a number of objective methods are now available for assessing pathologic voice change. They help to differentiate pathologic condition from normal condition and to monitor pathologic and aging change. These laboratory analyses are used commonly to monitor speech therapy and to follow a patient's recovery after surgery. Objectives : We investigated the values of jitter, shimmer and NNE of normal person and hoarseness patients in Korea. The values of Jitter and shimmer might be meaningful parameters distinguishing pathologic vibration from normal and recovery after surgery. Materials and Methods : Statistical significance between normal control and 48 subjects taken microlaryngeal surgery were compared with Dr. speech science program that is computerized system for acoustic analysis of voice production employed to determine vocal characteristics of pitch perturbation(jitter) and amplitude perturbation(shimmer). Results : The mean normal values of jitter and shimmer were 0.226${\pm}$0.110(%), 2.200${\pm}$0.421(%) in male and 0.164${\pm}$0.060(%), 2.063 ${\pm}$0.575(%) in female. In patients with vocal nodule, the preoperative and postoperative values of jitter and shimmer were valueless. In patients with vocal polyps, the preoperative and postoperative values of jitter and shimmer were valuable. Conclusion : Dr. speech science program was effective to monitor laryngeal disease and aging changes.
지하구조물의 철근부식 평가에 대한 개정 세부지침(터널)의 적용방안
추진호(Choo, Jin-Ho),장경진(Jang,Kyung-Jin),김홍균(Kim, Hong-Kyoon),김형탁(Kim, Hyung-Tak),윤태국(Yoon, Tae-Gook) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.2
According to the revised guideline(tunnel) in 2009, the corrosion factor for deterioration of reinforced underground structures is changed. Two on-site measurements are arranged and evaluated for the possible application. It is promising method 2D-contour map by half-cell as well as the polarization resistance and galvanostatic/potentiostatic pulse transient response for better application of assessing corrosion condition in revised detail guideline.
김정엽(Jung-Yup Kim),장경진(Kyung Jin Jang),한화택(Hwataik Han) 대한설비공학회 2014 설비공학 논문집 Vol.26 No.11
This paper investigates the exhaust effectiveness of smoke, in the case of fire in a large atrium space. Numerical analysis was conducted to simulate transient fire growth in a test room, modeled by the Murcia atrium fire test. Various indices representing the exhaust performance of the exhaust system were obtained, such as the height of the smoke layer, and the instantaneous and accumulative capture efficiency of the smoke. The residual life time of smoke from the fire was also obtained, by injecting tracer gases at the fire location, depending on the airflow rate, and the location of the exhausts. The capture efficiency based on smoke concentration at the exhausts exhibits how much smoke can be removed by the exhaust system; whereas, the exhaust effectiveness based on residual life time indicates how rapidly the smoke can reach the exhaust locations, before being exhausted. The definitions and meanings of the indices to be used in representing the exhaust performance of a smoke exhaust system installed in a large space are discussed.