그래픽 기반 시뮬레이터를 이용한 원전 모의운전 실습교육

신병철,김웅기,주용창 대한방사선방어학회 2021 대한방사선방어학회 학술발표회 논문요약집 Vol.2021 No.04

우수방사성의약품 생산시설 개발

신병철,정원명,박상현,이규일,박경배,박진호 한국약제학회 2003 Journal of Pharmaceutical Investigation Vol.33 No.2

Manufacturing facilities of the pharmaceuticals must meet certain level of the cleanness required so that foreign substances such as dust, moisture, heat, microorganism, or virus do not contaminate the product. In case of radiopharmaceuticals for medical treatment and diagnosis, not only should the operators and environment be protected from radiation but also need to be isolated from the foreign contaminant. Therefore, manufacturing facilities for radiopharmaceuticals must satisfy the design standards of both hot cell and clean room which are specified by GNP. However, standards of maintaining negative pressure for preventing spread of radioactive contaminant in isolated facilities conflict with the standards of maintaining positive pressure for keeping cleanness. To solve this problem, are pressure of hot cell was designed lower than in the adjacent area to meet standards of the radiation safety. To keep higher cleanness in certain part of the hot cell for filling, minimal relative positive pressure allows. In order to effectively maintain the cleanness that is required for production of Tc-99m generator, which takes 70% of whole demand of radiopharmaceuticals, the rooms placed in each side of production room are used as a buffer area and three lead hot cells are installed in production room. In this research, we established the appropriate engineered design concept for Tc-99m generator manufacturing facility, which satisfies both GMP cleanness standard for preventing particles, bacteria, other contaminants and the regulations of radiation safety for supervising and controlling the amount of radiation exposure and exhausted radioactivity. And the concept of multi-buffer zones is introduced to apply negative air pressure for hot cell with first priority and to continue relative positive air pressure for clean room.

유한요소법을 이용한 복합압전체의 압전계수예측

신병철,윤만순,임종인,강영훈,장현명,박병학,백성기 한국세라믹학회 1990 한국세라믹학회지 Vol.27 No.1

A model is developed based on the Finite Element Method (FEM) which provides a more accurate prediction of the hydrostatic piezoelectric coefficient of 1-3 or 3-1 PZT-Polymer composites than does the series/parallel model.

Special Theme 운수시설의 화재위험과 인명안전 3 - 운수시설의 화재안전기준 소개 및 개선방향

신병철,Sin, Byeong-Cheol 한국화재보험협회 2010 防災와 保險 Vol.135 No.-

포스터 발표 : 말기 신부전 환자에서 좌심실 비대에 대한 호모시스테인과 심장트로포인-1의 상관성

신병철,류봉관,김현리 대한신장학회 2004 춘계학술대회 초록집 Vol.24 No.1

Bispectral Index 감시장치로 경막외마취의 진정효과를 평가할 수 있는가?

신병철,이혜원,신혜원,조헌,임혜자,윤석민,장성호 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.6

Background: Epidural anesthesia has been shown to a have direct sedative effect and to markedly reduce the amount of hypnotic agents required for sedation. A Bispectral Index (BIS) is a useful of the level of sedation and loss of consciousness for several anesthetics including propofol. In this study, we investigated whether BIS monitoring could detect the sedative effect of epidural anesthesia during propofol induction. Methods: Twenty patients scheduled for elective lower abdominal surgery were included. A Target controlled infusion (target effect concentration 5㎍/ml, induction time 3 min) of propofol was administered to the patients with or without epidural anesthesia (2% lidocaine 15 ml) at the L_2-3 level. The OAA/S scale and BIS were evaluated 20 min after epidural injection. Hypnotic requirements of propofol were determined using loss of eye opening in response to verbal command as an epidural. At the time of induction of hypnosis, the target concentration, target effect concentration and BIS were recorded. Results: Epidural lidocaine significantly decreased the hypnotic dose of propofol (1.0±0.2㎍/ml vs. 1.3±0.1㎍/ml; p=0.0008), hypnotic calculated concentration (3.3±0.6㎍/ml vs. 4.1±0.3㎍/ml; P=0.0007), and the hypnotic effect concentration (0.7±0.3㎍/ml vs. 1.1±0.1㎍/ml; P=0.0007). In the patients with epidural anesthesia, the OAA/S scale was decreased without a change of the BIS after epidural anesthesia and BIS recorded at the time of induction of hypnosis was much higher in patients with epidural anesthesia than in patients without in epidural anesthesia (92.7±2.2㎍/ml vs. 85.5±6.2㎍/ml; P=0.0029). Conclusions: Epidural anesthesia included a sedative effect without a change of the BIS and then induced the hypnosis with lesser dose of propofol. At the time of hypnosis, a higher BIS was noticed with epidural anesthesia. These results concluded that BIS monitoring could not detect the sedative effect induced with epidural anesthesia. (Korean J Anesthesiol 2002; 43: 698~703)

IPv6 헤더 압축에서의 에러 복구 방안

신병철,김민영,홍고르출,이인성 한국정보통신학회 2006 한국정보통신학회논문지 Vol.10 No.7

Header compression scheme is suggested as a solution to reduce the inefficient overhead of general packet stream data. Especially, it is shown that there are more overhead rate for real-time media stream links such as voice because of its short payload size, and it is possible to get higher bandwidth efficiency using the header compression scheme.There are two kinds of error recovery in header compression such as Periodic Header Refresh (PHR) and Header Request (HR) schemes. In this paper, we analyze the performance of these two compression recovery schemes, and some results such as the overhead rate, bandwidth gain and bandwidth efficiency (BE) are presented. 헤더 압축 기술은 기존의 일반적인 패킷 데이터의 비효율적인 오버 헤드를 줄이기 위한 방안으로 제안되었다. 특히 음성과 같은 실시간 미디어 스트림 경우에는 더욱 큰 오버헤드율을 보이게 되는데, 헤더 압축을 통해 보다 높은 대역폭 효율을 얻을 수 있다.본 논문에서는 PHR (Periodic Header Refresh) 방법과 HR (Header Request) 방법의 두가지 에러 복구 기법에 관하여 각각 성능 분석을 실시하였다. 그 결과로 Overhead Rate, Bandwidth Gain, 그리고 Bandwidth Efficiency 등의 분석결과가 제시되었다.

The Formality and Landscape Significance of Geomundo Samhopalkyung

신병철 한국전통조경학회 2016 한국전통조경학회지 Vol.14 No.-

The research results on the examination of the characteristic and value of Samhopalkyung (三湖八景, the eight sceneries of Samho) as an important source of Geomundo’s tourism through symbolic analysis on the scenic formality and significance of Geomundo Samhopalkyung. The 1st and 2nd sceneries of Samhopalkyung employs the motif of Sosalpalkyung; Gyuleun Kim Lyu, the subject of Palkyungsi (poetry of the eight sceneries), which is the origin of Palkyung (the eight sceneries), is understood as the observed scenery of his residence and safe haven. The main subject of Samhopalkyung combines formal factors and endemic factors, such as the pavilion, rain, waves, setting sun, returning ship, sandy beach of the sea, fishing light, and the clouds, in which the panoramic scenic characteristic of a fishing village is emphasized. Most of the sceneries are time sensitive landscape type and view type sceneries; Samhopalkyung holds the variety of various visual ranges, and includes the sceneries that demonstrate property of sound landscape. Geomundo Samhopalkyung pursues the poetic tension, and dialectic composition through the juxtaposition and confrontation of each scenery to apportion contrasting directions, distances, and time, such as night and day, sky and sea, coastal waters and deep waters, and the East and the West, in which the traces of agony to embrace the indigenous aesthetic characteristic of the sea, holding the universal order, and scenic significance, can be found. Ultimately, the dignity of oceanicinsular sceneries based on the three dimensional spatial-temporal elements of direction, space, distance, and time, is discovered within the Samhopalkyung.

반화소 움직임 벡터를 이용한 적응적 비디오워터마킹

신병철,김민영,홍고르출,이인성,Shinn Brian-B.,Kim Min-Yeong,D Khongorzul,Lee In-Sung 한국정보통신학회 2006 한국정보통신학회논문지 Vol.10 No.7

헤더 압축 기술은 기존의 일반적인 패킷 데이터의 비효율적인 오버 헤드를 줄이기 위한 방안으로 제안되었다. 특히 음성과 같은 실시간 미디어 스트림 경우에는 더욱 큰 오버헤드율을 보이게 되는데, 헤더 압축을 통해 보다 높은 대역폭 효율을 얻을 수 있다. 본 논문에서는 PHR(periodic Header Refresh) 방법과 HR(Header Request) 방법 의 두가지 에러 복구 기법 에 관하여 각각 성능 분석을 실시하였다. 그 결과로 Overhead Rate, Bandwidth Gain, 그리고 Bandwidth Efficiency 등의 분석 결과가 제시되었다. Header compression scheme is suggested as a solution to reduce the inefficient overhead of general packet stream data. Especially, it is shown that there are more overhead rate for real-time media stream links such as voice because of its short payload size, and it is possible to get higher bandwidth efficiency using the header compression scheme. There are two kinds of error recovery in header compression such as Periodic Header Refresh(PHR) and Header Request(HR) schemes. In this paper, we analyze the performance of these two compression recovery schemes, and some results such as the overhead rate, bandwidth gain and bandwidth efficiency(BE) are presented.

경추 추나요법이 추골동맥과 기저동맥 혈류에 미치는 영향

신병철,김도환,김상돈,송용선,Shin, Byung-Cheul,Kim, Do-Hwan,Kim, Sang-Don,Song, Yung-Sun 척추신경추나의학회 2000 대한추나의학회지 Vol.1 No.1

Objectives : CHUNA therapy that removes compression of dislocated vertebral bones has positive effect, but sometimes improper CHUNA manual therapy may give rise to negative effect. The aim of this study is to make sure that cervical CHUNA manual therapy give positive effect or negative effect to the blood flow velocity of vertebral artery(VA) and basilar artery(BA) by Trancranial Doppler sonography(TCD). Methods : We performed TCD study on 20patients(male 5, female 15, mean ages 38.5 years) with diagnosis like cervical movement related disorder, headache or dizziness. After we measured mean blood flow velocity(Vm) of VA and BA before cervical CHUNA therapy(Pre-CCT) and after cervical CHUNA therapy(Post-CCT), statistically evaluated the results. Results: The patients received cervical CHUNA therapy for TA sequel, HIVD of cervical spine, headache, dizziness, neck stiffness etc. VA Vm was $31.9{\pm}8.0cm/sec$ before CHUNA therapy, but significantly increased $35.0{\pm}8.7cm/sec$ after CHUNA therapy (p < 0.05). But, there was no significant variation of BA Vm between $41.8{\pm}7.5cm/sec$ Pre-CCT and $41.2{\pm}8.5cm/sec$ Post-CCT(p>0.05). Though VA Vm slightly increased after CHUNA therapy in normal range group, there was no significant variation between VA Vm Pre-CCT and VA Vm Post~CCT. In VA Vm decrease group, VA Vm significantly increased after CHUNA therapy(p<0.05). But, there was no significant variation of BA Vm between Pre-CCT and Post-CCT in BA Vm normal range group and BA Vm decrease group(p>0.05). Conclusions: These findings suggest that cervical CHUNA manual therapy have positive effect on blood flow velocity of VA and BA.