Multimedia : Technology Push vs. Customer Pull

정경덕,윤종훈 한국정보시스템학회 1996 한국정보시스템학회 추계 학술발표논문집 Vol.1996 No.-

이용자 편의증대를 위한 운임제도 대안 정책연구

정경덕(Kyeong-Duk Jeong),최갑봉(Gab-Bong Choi),유영희(Yeong-Hee Yoo),이향숙(Hyang-Sook Lee) 한국철도학회 2017 한국철도학회 학술발표대회논문집 Vol.2017 No.05

서울시는 ’15.6.27 대중교통요금인상과 아울러 국내 최초로 조조할인제를 시행하였다. 첫차부터 오전 6 시 30 분까지 지하철과 버스를 이용하면 요금을 20% 할인해주는 것으로 제도 시행 1 년간 총 6,940 만명(하루 22 만명)이 할인혜택을 받은 것으로 분석되고 있다. 본 논문에서는 교통수요에 탄력적인 요금제 도입형태로서의 조조할인제도의 도입효과 분석과 함께 기존 정기권 제도의 문제점 개선 방안, 해외 선진도시의 다양한 외국인 대상요금할인제도 사례 조사 등을 통해 통근 통행자 및 외국인을 위한 보다 적극적인 할인제도를 연구, 기술하였다. Effective from "15.6.27, Seoul City was performed public transport fare hikes as well as the “Free Pre-Peak Travel ”(early morning discount fare) at the first time in Korea. “Early morning discount fare” means that you get a 20% discount on the fare if you take the subway and bus from the first train start time to 6:30 am. Enforcement one years, total 6,940 million people (22 million people a day) have been analyzed to receive the discount. In this paper, through traffic demand flexible pricing introduced form as “Free Pre-Peak Travel”(early morning discount fare) problems improvement of discounts existing commuter pass system with the introduction effects of institutional measures, various foreigners fare discount system case studies, such as overseas advanced cities aggressive than for commuting parties and foreign discount research institutions, and technology.

메르스 사례를 통해서 본 도시철도 긴급상황시 교통안전 대응전략에 관한 연구

정경덕(Kyeong-Duk Jeong),윤여경(Yeo-Kyeong Yoon),서정식(Jeong-Sik Seo),임판주(Pan-Joo Im),신선웅(Seon-Woong Sin) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10

높은 치사율과 빠른 확산속도를 갖고 있는 메르스(MERS-CoV : 중동호흡기 증후군)의 국내 확산의 조기 차단이 실패로 돌아가면서 중앙정부는 국가 차원의 콘트롤 타워의 혼선, 대응능력 부족이라는 혹독한 비난을 받았다. 시민들의 주요 이용수단인 대중교통 특히 도시철도의 경우 메르스 확산에 대한 공포가 본격화되기 시작한 6 월 첫 주부터 메르스 관리대책 종료(7.28)까지 이용패턴과 운수수입 변화에 있어 상당히 다이나믹한 양상을 보였다. 이용자 유형별, 각 확산 단계(국면)별 이용데이터 분석과 아울러 메르스 예방 및 확산방지를 위한 서울메트로의 관리대책 추진 사항을 종합 정리하고, 추진 과정 등을 되짚어 봄으로써 향후 유사한 상황이 발생 시 효과적인 대응전략을 기술하였다. Korean government was harshly criticized by citizens because of their inefficient counter measure for quick spreading and highly fatal MERS. From early June(peak period of MERS) to JULY 28th(ending period of counter measure of government), variance of using pattern and fare box had been very dynamic. By analyzing passenger’s data of each phase of MERS spreading and by retrospecting Seoul Metro’s preventing measure for MERS spreading, we try to find a better way to address an emergency situation that is similar to MERS.

앉은 자세에서 능동적 체간 훈련이 초기 뇌졸중 환자의 균형과 에너지 소모에 미치는 효과

최종덕 ( Jong-duk Choi ),정경만 ( Kyeoung-man Jung ) 대한물리의학회 2017 대한물리의학회지 Vol.12 No.4

PURPOSE: This study aimed to determine the effect of active trunk training in the sitting position on balance and energy consumption in early stroke patients. METHODS: The subjects of this study were twenty four early stroke patients were recruited and randomly divided into two groups; experimental group (n=12) and control group (n=12). The subjects in the experimental group participated in active trunk training (20 min) and conventional physical therapy (20 min) five times a week for four weeks. The control group conducted general balance exercise (20 min) and conventional physical therapy (20 min) five times a week for four weeks. The outcomes were assessed using the Berg balance scale, Timed up and go test and energy cost and physiological cost index. RESULTS: Both groups showed a significant increase in their Berg balance scale and significant decrease in their Timed up and go test score, and energy cost and physiological cost index (p<.05). Compared to the control group, the experimental group experienced a greater increase in the Berg balance scale (p<.05) and a larger decrease in the timed up and go test score, and energy cost and physiological cost index (p<.05). CONCLUSION: We suggest that active trunk training in the sitting position may be effective in improving balance and energy consumption in early stroke patients. Thus, active trunk training is important for such patients. Further studies are needed to better understand the effectiveness of trunk training in early stroke patients.

유비쿼터스 주거환경을 위한 AR 기반 개선형 인터페이싱 기법 개발

정경리(Gyeong Ri Jeong),안승민(Seung Min An),서광덕(Kwang-deok Seo) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.11

AR 기반 유비쿼터스 주거환경에서의 사용자 인터페이스 구현

정경리(Gyeong Ri Jeong),김민석(Min Suk Kim),안은빈(Eun Bin An),서광덕(Kwang Deok Seo) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

최근 증강현실(AR) 기술 관련 시장규모가 커지고 있으며, 사물인터넷(IoT)과 AR 을 접목하는 기술에 대한 관심이 늘고 있다. 그러나 AR 기반의 어플리케이션을 구현하기에 앞서 여전히 사용자의 편의를 고려한 UI/UX 디자인에 대한 고려가 부족하다. AR 공간은 실제 우리가 생활하는 공간과 가상의 디지털 공간이 혼재된 환경으로써 현실에서 물체를 만지고 조작하는 방식을 적용한 NUI(Natural User Interface) 기반의 사용자 인터페이스가 적합하다. 따라서 본 논문에서는 AR 기기의 효율적인 사용성과 사용자의 편의성을 고려한 유비쿼터스 주거환경에서의 AR 기반 사용자 인터페이스를 제안한다.

Fabrication of Drug-eluting Stent by Deposited N-doped TiO₂ Thin Film

박유정,조명덕,박준,정경운,송선정,조동련,정명호 한국공업화학회 2010 한국공업화학회 연구논문 초록집 Vol.2010 No.1

누리장나무의 진통 효과

전 훈,정경로,이병수,김명수,고희재,양우인,전용덕,안지혜,차동석,권 진 한국생약학회 2023 생약학회지 Vol.54 No.2

Clerodendrum trichotomum has been widely used as a traditional medicine for the treatment of numerous diseases, including pain management. However, there have been extremely limited pharmacological and phytochemical studies on Clerodendrum trichotomum up to now. In this study, we investigated the effects of the methanolic extract of Clerodendrum trichotomum (MCT) on nociceptive pain in mice. Our finding demonstrate that MCT treatment significantly extended the latency time in both the tail-immersion test and hot-plate test. Additionally, MCT treatment reduced acetic acid-induced writhing motions. These results suggest that MCT possesses strong anti-nociceptive activities against thermal and chemical nociception. In the formalin test, mice fed with MCT exhibited reduced licking time during both the early and late phases, thereby confirming the therapeutic potential of MCT in central and peripheral nociception. Furthermore, in combination tests using naloxone, the MCT-mediated anti-nociception was slightly reduced, indicating that MCT might act as a partial opioid receptor agonist. Based on these results, MCT may be a valuable candidate for the development of anti-nociceptive agents.

열화상 카메라를 이용한 통합 방역 시스템 개발

정범진,이정임,서광덕,정경옥 대한안전경영과학회 2022 대한안전경영과학회지 Vol.24 No.1

The most common symptoms of COVID-19 are high fever, cough, headache, and fever. These symptoms may vary from person to person, but checking for “fever” is the government’s most basic measure. To confirm this, many facilities use thermographic cameras. Since the previously developed thermographic camera measures body temperature one by one, it takes a lot of time to measure body temperature in places where many people enter and exit, such as multi-use facilities. In order to prevent malfunctions and errors and to prevent sensitive personal information collection, this research team attempted to develop a facial recognition thermographic camera. The purpose of this study is to compensate for the shortcomings of existing thermographic cameras with disaster safety IoT integrated solution products and to provide quarantine systems using advanced facial recognition technologies. In addition, the captured image information should be protected as personal sensitive information, and a recent leak to China occurred. In order to prevent another case of personal information leakage, it is urgent to develop a thermographic camera that reflects this part. The thermal imaging camera system based on facial recognition technology developed in this study received two patents and one application as of January 2022. In the COVID-19 infectious disease disaster, ‘quarantine’ is an essential element that must be done at the preventive stage. Therefore, we hope that this development will be useful in the quarantine management field.

균열밀도에 따른 R·C 슬래브 교량의 내하력 평가

박길현,양승현,황선하,정경덕 朝鮮大學校 建設技術硏究所 2003 建設技術硏究 Vol.23 No.1

Through the exterior features on reinforced concrete slab, crack density and crack originate deflections ratio crack density, decrease percentage of load carrying capacity, crack originate deflections ration and decrease percentage of load carrying capacity were statistically analyzed. Crack density, crack originate deflections ratio and decrease percentage of load carrying capacity are very closely related each other with 0.724, 0.821 and 0.317 of correlation coefficient within 95% of mind level. However, the correlation between crack originate deflections ratio and decrease percentage of load carrying capacity was low. Through the regression equation curve method in which crack density selected as independent variable, crack originate deflections ratio and decrease percentage of load carrying capacity as dependent variable, regression equations were presumed. Equations exist in mind level range of F(0.05, S-curve showed the highest, conformance with 79.5%, 72.2%. The regression equation between CRD or LCCD and CD was also shown. The overall judgement of load carrying capacity of bridges can be possible through the moreover investigation of crack density, the time needed precision could be valuable data for lower maintenance cost, the degree of deterioration of bridges and safety judgement.