• Title/Summary/Keyword: interrupted

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A Study on Calculation of Sectional Travel Speeds of the Interrupted Traffic Flow with the Consideration of the Characteristics of Probe Data (프로브 자료의 특성을 고려한 단속류의 구간 통행속도 산출에 관한 연구)

  • Jeong, Yeon Tak;Jung, Hun Young
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.6
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    • pp.1851-1861
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    • 2014
  • This study aims to calculate reliable sectional travel speeds with the consideration of the characteristics of the probe data collected in the interrupted traffic flow. First, in order to analysis the characteristics of the probe data, we looked into the distribution of the sectional travel times of each probe vehicle and compared the difference in the sectional travel speeds of each probe vehicle collected by DSRC. As a result, it is shown that outliers should be removed for the distribution of the sectional travel times. However, The comparison results show that the sectional travel speeds from the DSRC probe vehicles are not significantly different. Finally, based on the distribution characteristics of the sectional travel speeds of each probe vehicle and the representative values counted during a collection period, we drew the optimal outlier removal procedure and evaluated the estimation errors. The evaluation results showed that the DSRC sectional travel speeds were found to be similar to the observed values from actually running vehicles. On the contrary, in the case of the sectional travel speeds of intra-city bus, it was analyzed that they were less accurate than the DSRC sectional travel speeds. In the future, it will be necessary to improve BIS process and make use of the travel information on intra-city buses collected in real time to find various ways of applying it as traffic information.

A Study of Career-interrupted Women's Vocational Training and Career Management System for NCS Diffusion (NCS 확산을 위한 경력단절여성 직업교육과 커리어관리 시스템에 관한 연구)

  • Suh, Yong-Han;Toshihara, Yabu
    • Management & Information Systems Review
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    • v.36 no.2
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    • pp.207-221
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    • 2017
  • The career management concept is changing rapidly in the career management field in recent years. It becomes very difficult to have a lifetime employment within the same firm. As there is career interruption that is pervasive phenomenon in the women's career management area, many academics and practitioners have been interested in it. The purpose of this study was to examine the influence of women's career-interruptions as the effective career strategy on career development actors and career success. To test the effects of the proactive career management of career-interrupted women, data were divided into two groups including proactive career management group and general career management group based on whether career-interruptions are voluntary or not. The results showed that the proactive development actors was significantly different depending on women's proactive career management and general career management group. First, proactive-career women were more self-directed to learn and have a significant impact on developing skills through training. Second, the career successes were not significantly different depending on and general career management group.

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The Characteristics of Driving Parameters and CO2 Emissions of Light-Duty Vehicles in Real-Driving Conditions at Urban Area in Seoul (서울 도심의 실제 도로 주행 조건에서 소형자동차의 주행인자와 CO2 배출 특성에 관한 연구)

  • Park, Junhong;Lee, Jongtae;Kim, Sunmoon;Kim, Jeongsoo;Ahn, Keunhwan
    • Journal of Climate Change Research
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    • v.4 no.4
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    • pp.359-369
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    • 2013
  • In this paper, correlations between driving parameters and $CO_2$ of light-duty vehicles have been analyzed. Three test vehicles equipped with PEMS (Portable Emission Measurement System) have been driven in real-road in urban areas of Seoul. Averaged vehicle speed, RPA(Relative Positive Acceleration) and stop ratio have been selected as main driving parameters. The analysis have been conducted in interrupted and uninterrupted road types. Averaged values in various driving conditions have been calculated with distance based moving averaging window method. The multiple linear regression method have been applied to account for correlation between driving parameters and $CO_2$ emissions. This approach has shown statistically that $CO_2$ emission per distance (g/km) have tendencies to be increased as decreased averaged vehicle speed and increased RPA and stop ratio. Compared with uninterrupted traffic, interrupted traffic have shown the lower vehicle speed and the higher RPA and stop ratio. These characteristics of driving parameters in interrupted traffic should cause the higher $CO_2$ emission per distance.

Some Problems in the North Pacific Trawl Fisheries of Korea (북양 트로올 어업의 문제점)

  • 이병기
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.7 no.1
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    • pp.39-43
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    • 1971
  • Koreans have been interested in the North Pacific fisheries since the exploratory fishing was carried out by R/V Baek-Kyung of Pusan Fisheries College in 1966. Although the salmon fishing was interrupted by some countries, Korean trawlers are venturing in the North Pacific Ocean for catching demersal fishes. The trawl fishery in the region raises some problems. i. e. the conflict with the coastal or nearshore fishery, low fish price, etc. This paper concerns with the plan for the settlement of these problems..

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DISCRETE-TIME BULK-SERVICE QUEUE WITH MARKOVIAN SERVICE INTERRUPTION AND PROBABILISTIC BULK SIZE

  • Lee, Yu-Tae
    • Journal of applied mathematics & informatics
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    • v.28 no.1_2
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    • pp.275-282
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    • 2010
  • This paper analyzes a discrete-time bulk-service queue with probabilistic bulk size, where the service process is interrupted by a Markov chain. We study the joint probability generating function of system occupancy and the state of the Markov chain. We derive several performance measures of interest, including average system occupancy and delay distribution.

Bilateral Traumatic Rupture of Diaphragm - 1 Case Report - (양측에 발생한 외상성 횡격막 파열;1례 보고)

  • Lee, Taek-Yeon;Park, Yeong-Sik;Kim, Gwang-Ho
    • Journal of Chest Surgery
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    • v.25 no.9
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    • pp.916-920
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    • 1992
  • Bilateral traumatic rupture of diaphragm is very rare. One case due to car accident is reported. Preoperative chest X-ray revealed the diaphragm rupture in the left side and the hemothorax in the right side. During the completion of left diaphragm repair through left thoracoabdominal incision, right diaphragm rupture was found incidentally. Left diaphragm was repaired using pledgets which were anchored at the thoracic wall. Right diaphragm was also repaired by interrupted Halsted sutures through seperated right thoracotomy. Postoperative course was uneventful.

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Wavelet-based detection and classification of roof-corner pressure transients

  • Pettit, Chris L.;Jones, Nicholas P.;Ghanem, Roger
    • Wind and Structures
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    • v.3 no.3
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    • pp.159-175
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    • 2000
  • Many practical time series, including pressure signals measured on roof-corners of low-rise buildings in quartering winds, consist of relatively quiescent periods interrupted by intermittent transients. The dyadic wavelet transform is used to detect these transients in pressure time series and a relatively simple pattern classification scheme is used to detect underlying structure in these transients. Statistical analysis of the resulting pattern classes yields a library of signal "building blocks", which are useful for detailed characterization of transients inherent to the signals being analyzed.

Surgical Treatment of Incomplete Endocardial Cushion Defect: 2 Cases Report (심장내막상결손증의 외과적 치료: 2예 보고)

  • 송요준
    • Journal of Chest Surgery
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    • v.7 no.1
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    • pp.101-108
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    • 1974
  • Repair of incomplete endocardial cushion defect was accomplished in two cases in September 1973 in this department. In each case a low atrial septal defect and a cleft of mitral septal cusp were found. Interrupted suture repair on the cleft mitral cusp and closure of the atrial septal defect with dacron patch were done successfully. Rigg-Kyvsgaard bubble oxygynator and Sigma motor were utilized for extracorporeal circulation. Follow up study, six months after discharge, revealed satisfactory results.

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Surgical Repair of Interruption of the Aortic Arch[Type A] -A Report of 5 Cases- (대동맥 결손증 (Type A) 의 외과적 치험)

  • 조범구
    • Journal of Chest Surgery
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    • v.21 no.4
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    • pp.665-671
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    • 1988
  • Between 1981 and 1987, five patients with an interruption of the aortic arch were operated upon. All had a ventricular septal defect and a patent ductus arteriosus as associated anomalies. A two-stage procedure was employed in these cases, the initial procedure being repair of the interrupted arch, ligation of the patent ductus arteriosus, banding of the main pulmonary artery and a lung biopsy which was followed, 5 to 49 months later, by the repair of the ventricular septal defect. Four patients completed the two-stage procedure with one postoperative mortality. The remaining patient is yet to complete the second stage procedure.

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One Stage Repair of Traumatic Ventricular Septal Defect and Mitral Regurgitation (외상성 심실중격결손 및 승모판막 역류증의 일차 완전정복)

  • 이재원;송태승;제형곤;송명근
    • Journal of Chest Surgery
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    • v.32 no.12
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    • pp.1131-1134
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    • 1999
  • After a penetrating thoracic injury early detection of intracardiac injury and early surgical repair when indicated are essential. A case presenting severe respiratory distress two weeks after a penetrating thoracic injury is reported. Transesophageal echocardiography showed massive pericardial effusion ventricular septal defect and mirtal regurgitation, The infundibular ventricular septal perforation was repaired using a Dacron patch the anterior mitral leaflet by interrupted sutures and the ruptured chordae of the posterior leaflet by a new chordae formation.

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