Open-loop 지하철 선로의 열차 DIAGRAM에서 지연에 따른 정규화에 관한 연구

홍효식 철도전문대학교 1995 論文集 Vol.11 No.1

In this paper, traffic modeling and con lo design was considered to analyze and improve the stability of train diagram in the Open-loop Metro line. A complete discrete-event traffic model ddescribing the natual instability of open-loop metro line is analyzed. The traffic stability properties are introduced and easy-to-implement feed back traffic control algorithms are desigened, which satisfied with system stability.

두경부에서 생긴 림프종에서 EBV와 HTLV-1의 검색

박준식,정효순,권성우,이상숙 경북대학교 병원 2003 경북대학교병원의학연구소논문집 Vol.7 No.1

Background and Objectives : Extranodal non-Hodgkin's lymphoma(NHL) of the head and neck(H&N) accounts for 10-20% of all cases of NHL. Despite their frequency, the cause of these lymphomas is still poorly understood. Recently, the role of viral origin in NHLs, including Epstein-Barr virus(EBV), as the main cause of sinonasal lymphomas of T/NK cell phenotype and HTLV-1 as a cause of acute T-cell lymphoma/leukemia has been well documented. We investigated the clinicopathologic findings, immunophenotypic profile, and status of EBV and HTLV-1 DNA of patients with H&N lymphoma. Materials and Methods : Twenty-seven patients with NHL of H&N region were studied. There were 15 males and 12 females with the median age of 50 years. All patients were reclassified according to the Working formulation(WF) and REAL classification. EBV genome DNA and HTLV-1 RNA were surveyed by PCR assay using formalin-fixed and paraffin-embedded tissue blocks. Results : The tonsil was the most commonly involved site(44.4%) followed by nasal cavity(18.5%), nasopharynx(18.5%) and orbit(7.4%). Immunophenotyping revealed 19 cases of B cell lineage, 7 cases of T cell lineage and one case of null cell type. Most of B-cell lymphomas were diffuse large cell lymphomas(58%). Tonsillar lymphomas were all B-cell origin. Four of the five nasal cavity lymphomas and one nasopharyngeal lymphoma showed an angiocentric T/NK cell phenotype with strong association with EBV. EBV genome was detected in 15 of 26 H&N NHLs(57.7%). Seven of 19 B-cell lymphomas(36.8%) and all T/NK or null cell type lymphomas were positive for EBV DNA. However, there was no HTLV-1 positive cases found. Conclusions : It could be concluded that the high incidence of EBV of angiocentric T/NK-cell lymphomas of the nasal cavity may indicate a probable role of EBV in the development of these lymphomas.

유압피스톤 모터용 Slipper-pad의 손상상태 해석

배효준,조연상,박흥식 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-

This papaer was undertaken to do morphological analysis of wear particles for sliding members hydrauric rotary acuator. The lubricating wear test was performed under different experimental conditions using the wear test device and wear specimens of the pin on disk type was rubbed in parafinic base oil by three kinds of lubricating materials, varying applied load, sliding distance. The four shape parameters (50% volumetric diameter, aspect, roundness and reflectivity) are used for morphological analysis of wear particles. The results showed that the four shape parameters of wear particles depend on a kind of the lubricating materials. It was capable of presuming wear volume for three kinds of materials on driving time.

전남 무안군 승달산의 약용 식물상

양효식 목포대학교 연안환경연구소 2000 沿岸環境硏究 Vol.17 No.1

Seungdal-san (126˚ 28' E.L. and 34˚ 52' N.L.) located in the muan-gun, chonnam, korea is seungdal-san district park. During March 1999 to August 2000, this survey was carried out at Seungdal-san. Medical plant identified in this investigation were 6 families, 10 genera, 11 species of Pteridophyta, 4 families, 5 genera, 6 species of Gymnospermae, 82 families, 198 genera, 245 species, 25 variations of Anglospermae.

열차 경합에 따른 운전 조정알고리즘 개발에 관한 연구

홍효식 철도전문대학교 2004 論文集 Vol.19 No.-

The Railway Conflict detection and resolution is not done proper automatically because of the incomplete network and connection between railway equipments and insufficient software algorithm in the current Railway Traffic Management System (RTMS). The railway conflict detection and resolution is very important to maintain train operation consistence in the complicated operation. But in the current status the problem is not automatical resolved yet, is done manually case by case or resolved at happened the conflict. This paper will be presented the detection algorithm and resolution algorithm, the algorithm is designed in optimal theory and will be computer simulated.

3D 온라인 슈팅 게임 개발 : "3D 포트리스"

金敬植,崔勝寬,寓昔珍,申一卿,朴勝浩,李東熙,李東建,張孝善 호서대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.19 No.-

In this paper, features and efficiencies of the 3D engine are described which has been developed through the research of 3D real time rendering techniques. And an on-line shooting game "3D Fortress" which has been developed using this 3D engine with server technologies is introduced for the techniques and methodology applied in the process of development of the game as well as the features and discussions of its implementation.

Rocuronium 애벌투여시 근이완 발현시간 정도의 관찰

엄효상;김현식;최영균 인제대학교 2011 仁濟醫學 Vol.32 No.-

Methods: A total of 100 patients with ASA physical status I-II scheduled for elective surgery were enrolled. After induction with propofol (1.5mg/kg), one hundred patients were randomly allocated to two groups (Group A: T1 height depression (T1%)≥90%, Group B:T1 height depression (T1%) < 90%). Three minutes after priming with rocuronium (0.06 mg/kg), Group A received 0.54 mg/kg rocuronium, Group B received sensitivity-adjusted dose of rocuronium, respectively. Intubation was performed when T1 height depression (T1%) = 0% (onset time). Neuromuscular function was assessed using Evoked Eletromyography (Datex Relaxo graph NMT. Datex. Helsinki. Finland). Results: Three minutes after priming (0.06 mg/kg), T1 height depression (T1%) in Group B (71.0 ± 8.8%) were significantly lower than Group A (98.4 ± 2.4%) (P < 0.05). The onset times in Group B (195 ± 29s) were significantly shorter (P < 0.05) than Group A (248 ± 34 s). Conclusions: Sensitivity-adjusted dose of rocuronium by priming decreased the onset times and total rocuronium dose.

노후된 잔교식의 항만구조물의 신뢰성에 기초한 안전성 및 내하력평가

조효남,김성훈,노홍식,임종권,이우근 한양대학교 공학기술연구소 1995 공학기술논문집 Vol.4 No.1

This study is intended to propose a reliability based approach to safety assessment and berth-capacity rating of aged wharf structures based on measured data acquired from an extensive dynamic field load testing against berth impact of real ships. The study comprises the essential part of a project for assessing actual berth-capacity of deteriorated and damaged dolphin structures at the Onsan oil refinery wharf currently operated for the berth of oil refinery ships of 20,000 DWT.

열차 제어 시스템 소프트웨어 안전 모델에 관한 연구

洪孝植 철도전문대학교 2006 論文集 Vol.21 No.-

Software testing during development and operation should exercise to obtain the desired software quality and leave failure data set. So far many software reliability models are classified and can be used to meature a software reliability only based on its failure history. But, in practice, developers or testers of software system must decide which existing software reliability model can be fitted. In the Train control system, safety is the most important view-point for development, and also reliability is too. In this paper, we will show that an appropriate reliability model can be selected by considering relations between characteristics of each testing environment and model's assumptions. Several methods of software testing for train control system are presented and discussed. Also, unit test, intergrateed test, function test and system test that are sequentially exercised during development will be introduced. In the conclusion, we will introduce the reliable and safe model for developing in the train control system software.

토끼에서 enrofloxacin과 enrofloxacin acetate의 比較藥物動態學

윤효인,박승춘,김창식,김민규,최기섭,신광순,박종일,조준형,조명행 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

This study was designed to examine the in vitro antibacterial activities and pharmacokinetics of enrofloxacin acetate (ENFXA) and enrofloxacin (ENFX). Two enrofloxacins had wide spectrum antibacterial activities against Gram positive and negative bacteria, and mycoplasma, showing potent antibacterial activities with low MICs (0.05-3.33 ㎍/㎖ for Gram positives, 0.002 ㎍/㎖ for Gram negatives and 0.02 ㎍/㎖ for mycoplasma). In order to investigate the profiles of two formulations of enrofloxacin we studied comparative pharmacokinetics of them in rabbits. Five rabbits were given 5 ㎎/㎏ body weight of each enrofloxacin formulation intravenously (i.v.) and orally (p.o.) in a cross-over study. Pharmacokinetic parameters of both formulations were calculated by the use of PCNONLIN, a computer program. Their bioavailibility in rabbits, the means of the area under the curve (AUC). After oral administration of each formulation in rabbits, the mean elimination half-lives (t_1/2,ke) were 3.25h (ENFX) and 4.32 h (ENFXA), and mean AUC 4.27 ㎍·h/㎖ (ENFX) and 6.21 ㎍·h/㎖ (ENFXA). Both enrofloxacin formulations seemed to have good tissue distribution and penetration as indicated by large volume of distribution: 4.76 1/㎏ for ENFX and 7.23 1/㎏ for ENFXA. With the results obtained in this study, ENFXA could be used in place of ENFX in rabbits.