San-in Kaigan National Park (Japan, Takeno)의 거미상

김주필(Joo-Pil Kim),박영철(Young Chul Park),정종우(Jongwoo Jung) 한국거미연구소 2005 한국거미 Vol.21 No.2

We reported the spider fauna near the Takeno Snorkeling Center located in San-In Kaigan National Park, northern Hyogo Prefecture. We identified 21 species belonging to six families which were also reported in Korea. 일본 Hyogo Prefecture의 Takeno Town에 위치한 San-In Kaigan National Park 내의 Takeno Snorkeling Center인근의 거미상을 보고한다. 조사 결과 6과 14속 21종의 거미류가 동정되었는데, 이들은 모두 한국에서도 출현하는 종이었다. 동일한 위도상에 위치한 위도의 거미상과 비교한 결과 전체 21종 중 12종이 두 지역에 공통으로 존재하였다.

Discussion on Aesthetic Value of Freestyle Taekwondo Poomsae Competitions

( Jongwoo Park ),( Yongkyu Ahn ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1

Taekwondo is a traditional Korean martial art, and has developed to a sport loved by many people around the world. Taekwondo has been selected as the formal item in Olympic Games since 2000, and currently have 206 member countries. It has grown to representative brand of Korea. Starting with the first World Taekwondo Hanmadang in 2006, World Taekwondo Federation (WTF) introduced freestyle Poomsae, and by 2012, freestyle Poomsae was selected as a formal item at World Taekwondo Poomsae Championships. Many coaches and athletes started to show their interest in freestyle Poomsae. Freestyle Poomsae is created with all Taekwondo movements, skills, acrobatic moves, dance, and music unlike the traditional Poomsae, and the order of movements can be freely organized by the creator. In freestyle Poomsae, an athlete must direct and express combined Taekwondo movements within limited time of 60-70 seconds. Scoring standard consists of skill (6.0) and direction (4.0) unlike the official Poomsae. The skill part consists of the difficulty of kicks, accuracy of movements, and overall completeness. The direction part consists of creativity, harmony, expression of chi, music, and dance movements. Freestyle Poomsae could give both performer and the audience aesthetic pleasure and impression by showing martial art quality, skill, direction, and beauty of completeness of Taekwondo. Such freestyle Poomsae competitions provide the performer the self-fulfillment of self-realization like figure skating or gymnastics, and gives the audience expectation and attraction. Recent freestyle competitions have shown high-quality competitions. This elevates the aesthetic value of Taekwondo, fulfills excellence and new recognition of Taekwondo, and is expected to activate and expand Taekwondo training. Freestyle Poomsae is a great tool to fulfill one’s desire for aesthetic experience, physical activity, self-recognition, self-expression, and self-realization. However, freestyle Poomsae should not put more importance on elements from other fields beside Taekwondo. Moreover, in order for freestyle Poomsae to become international, concept of Poomsae must be changed. Current concept of Poomsae is limited to ‘self-training with imaginary opponent’. Hence, expanded concept of Poomsae is necessary to persuade and attract many Taekwondo trainees around the world.

Impaired Long-term Hematopoietic Repopulation of Ex-vivo Pre-conditioned Hematopoietic Stem Cells

Jongwoo Joseph Park,Ho Seon Park,Hye Seung Jung,Hakmo Lee 한국실험동물학회 2014 한국실험동물학회 학술발표대회 논문집 Vol.2014 No.2

Design and Fabrication of Long-Term Stable Dye-Sensitized Solar Cells: Effect of Water Contents in Electrolytes on the Performance

Park, Jongwoo,Lee, Phillip,Ko, Min Jae SPRINGER 2019 INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND Vol. No.

Design and Fabrication of Long‑Term Stable Dye‑Sensitized Solar Cells: Effect of Water Contents in Electrolytes on the Performance

Jongwoo Park,Phillip Lee,Min Jae Ko 한국정밀공학회 2019 International Journal of Precision Engineering and Vol.6 No.1

The effects of water-containing I−/ I3 − liquid electrolytes on the photovoltaic performance and long-term stability of ruthenium based complex Z907 dye was examined in dye-sensitized solar cells (DSSCs). Despite of high water content up to 60 vol% in organic solvent-based liquid electrolyte, the photovoltaic properties and long-term stability measured under the standard global (G) air-mass (AM) 1.5 solar irradiation were not significantly affected. The underlying correlation between the effects of water and the photovoltaic performances were identified by UV–visible spectroscopy and electrochemical impedance spectroscopy. We investigated the long-term stability of performance for DSSCs in conjunction with I−/ I3 − redox electrolytes in different water compositions. The findings revealed that the competitive photovoltaic performance and longterm stability of water-containing DSSCs mainly depends on the hydrophobicity of dye as well as the transport phenomena of I3 − throughout the electrolytes. The water-based DSSCs proposed herein are free from water permeation issues and these results will provide great insight into the development of less expensive and more environmental friendly DSSCs.

Analysis of collective behavior and grasp motion in human hand

Jongwoo Park,Joono Cheong 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10

In this paper, we propose a method for analyzing and synthesizing human’s grasping motion and the corresponding collective behaviors in the human hand. We apply PCA technique for a dimension reduction and then Gaussian mixture model(GMM) in order to identify the grasp type and the associated object parameters for a given joint data set. We verify the validity of the analysis through simulation with human grasp data captured by a data glove.

A Study on the Development of a Day-to-Day Mental Stress Monitoring System using Personal Physiological Data

Jongwoo Park,Jongsu Kim,Sung-Phil Kim 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10

Pervasive healthcare and wireless health monitoring has been a central area to innovate novel personal and precise medicine for individuals. Many recent wireless health monitoring systems draw upon physiological signals acquired from wearable wristbands. However, most studies have paid attention to monitoring physical health states and relatively few efforts have been made to develop pervasive healthcare solutions for mental health. This study investigates a plausibility of the development of a wireless monitoring system for mental health in individuals by collecting and analyzing physiological signals from a wristband in naturalistic daily life environments. In particular, we aim to predict one’s mental stress level using the short-term heart rate variability (HRV) that is estimated from photoplethysmography (PPG) signals. Day-to-day measurements of PPG signals over a week along with a daily log of stress level were conducted three times a day for a week in each participant, in which participants performed measurements by themselves in their own living circumstances. Measurement times were distributed across noon, evening and night. The recorded signals were wirelessly transmitted to a smartphone via the Bluetooth link. The HRV feature of the ratio of high-frequency (0.15Hz - 0.4Hz) power over low-frequency (0.04Hz - 0.15Hz) power was used to predict individual daily stress levels. Prediction with the night measurements showed the highest accuracy compared to the measurements in other times; individual prediction accuracy reached as high as >90% using the night measurements. Across-subject validation of the proposed system demonstrated fair correlations between true and predicted stress scores, implying a possibility to generalize the system for populations. The results of this study may prove the possibility of the development of wireless mental health monitoring system in ambient environments.

Screening for Depressive Disorder in Elderly Patients with Chronic Physical Diseases Using the Patient Health Questionnaire-9

SeonCheol Park,HwaYoung Lee,DongWoo Lee,SangWoo Hahn,SangHo Park,YeoJu Kim,JaeSung Choi,HoSung Lee,SoyoungIrene Lee,KyoungSae Na,SungWon Jung,SeHoon Shim,KiWon Kim,JongWoo Paik,YoungJoon Kwon 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.3

Objective-We aimed to identify depressive symptom profiles that indicated the presence of depressive disorder and present optimal cut-off sub-scores for depressive symptom profiles for detecting depressive disorder in elderly subjects with chronic physical diseases including diabetes, chronic obstructive pulmonary disease/asthma, and coronary artery disease, using the Patient Health Questionnaire-9 (PHQ-9). Methods-Two hundred and thirty-one elderly patients with chronic physical diseases were recruited consecutively from a university-affiliated general hospital in South Korea. Results-Greater severities of all 9 depressive symptoms in the PHQ-9 were presented in those with depressive disorder rather than those without depressive disorder. A binary logistic regression modeling presented that little interest [adjusted odds ratio (aOR)=4.648, p<0.001], reduced/increased sleep (aOR=3.269, p<0.001), psychomotor retardation/agitation (aOR=2.243, p=0.004), and concentration problem (aOR=16.116, p<0.001) were independently associated with increased likelihood of having depressive disorder. Receiver operating characteristics (ROC) curve analysis presented that the optimal cut-off value of score on the items for little interest, reduced/increased sleep, psychomotor retardation/agitation and concentration problem (PHQ-9) for detecting depressive disorder was 4 with 61.9% of sensitivity and 91.5% of specificity [area under curve (AUC)=0.937, p<0.001]. Conclusion-Our findings suggested that the diagnostic weighting of little interest, reduced/increased sleep, psychomotor retardation/agitation, and concentration problem is needed to detect depressive disorder among the elderly patients with chronic physical diseases.

스티어링 휠 내부 전도체를 활용한 운전자의 핸즈 온/오프 검출 (HOD, Hands On/Off Detection) 방법 개발

박종우(Jongwoo Park),이명규(Myeongkyu Lee),맹주영(Jooyoung Maeng),양지현(Ji Hyun Yang) 대한인간공학회 2023 대한인간공학회 학술대회논문집 Vol.2023 No.5

Air-lift 반응기내 황화수소제거시 식물정유추출물의 역활

박종우(JongWoo Park),박영규(Young G. Park),김정인(Jeong-in Kim) 한국생물공학회 2010 KSBB Journal Vol.25 No.5

본 논문은 복합흡수제를 이용하여 유해가스를 처리하기 위해 식물정유의 주요구성성분을 파악한 식물정유로 황화수소가스의 처리효율을 규명하고자 하였다. 또한 복합흡수제와 황화수소가스에 의한 제거반응을 위한 적정조건을 분석하였으며 그 결과는 아래와 같이 요약 할 수 있다. 1) 황화수소가스는 중화반응으로 처리하고 져 할 경우, 식물정유의 화학구조에서 알코올기, 알데히드기, 에스터기등이 중화반응에 관여한다. 실험결과 앞서 언급한 화학작용기가 포함되어 있는 경우에 아민계열의 2-아미노에탄올 및 식물정유의 복합흡수제와 황화수소 가스와의 중화반응으로 염을 형성하여 유해가스 제거효율이 98%에 도달한다. 2) 황화수소가스를 제거하는 중화반응의 경우에 온도와 pH에 따라 처리효율이 크게 달라졌다. 높은 온도보다는 낮은 온도에서 제거효율이 거의 98%이상 나타났다. 적정 pH는 중성영역에서 비교적 처리효율을 확인하였다. 3) 황화수소가스의 처리효율은 초기농도에 따라 처리효율이 크게 차이가 나타났다. 황화수소의 초기농도가 1,100 ppm 이상인 경우에 처리효율은 40%로 나타났다. 반면, 240 ppm 이상인 경우에는 10분이내에 황화수소 가스 처리 효율이 90%이상 처리되는 것으로 나타났다. This paper reports on the experimental investigation carried out to evaluate the physical optimal conditions in the absorption column to remove odorous hydrogen sulfide gas. Hydrogen sulfide gas, as a highly undesirable contaminant, is most widely emitted from environmental treatment facilities. The absorbent mixed with natural second metabolites extracted from conifer trees and chemical absorbent of 2-aminoethanol was applied to remove it via chemical neutralization. The absorbent of natural second metabolites was achieved by a removal efficiency of 20-40% by itself depending on the treatment conditions, but the complex absorbent mixed with 0.1% amine chemical provides the removal efficiency of 98%. The optimal removal efficiencies have been examined against the two major parameters of temperature and pH. This study shows that the aqueous solution by natural second metabolites can be used as an appropriate absorbent in the column absorbed for the removal of hydrogen sulfide gas.