• 한국에너지공학회:학술대회논문집
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• 한국에너지공학회 2004년도 춘계 학술발표회 논문집
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• pp.395-400
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• 2004

국내 차세대 원전인 APR 1400 원전의 원자로 냉각 계통(Reactor Coolant System)을 대상으로 하여 표준 데이터 모델 기반의 데이터 저장소를 구축하였다. 또한 구축한 데이터 저장소를 기반으로 웹을 통해 해당 계통 및 계통에 포함되어 있는 장비의 속성정보를 검색할 수 있으며, 마이크로스테이션이라는 설계 틀에서 2차원 도면인 P&ID와 해당 P&ID와 연관된 3차원 CAD를 연계시킴으로써 P&ID를 바탕으로 건설한 원전 플랜트를 3차원 CAD 모델을 통하여 해당 계통의 실제 레이아웃(Layout)을 확인할 수 있도록 하는 프로토타입 시스템을 개발하였다.

• 한국CDE학회논문집
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• 제18권3호
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• pp.200-210
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• 2013

It has become important to manage plant data effectively and to share these data among different organizations that are located in different places and participate in a variety of lifecycle phases. ISO 15926 is an international standard for integration of lifecycle data for process plants including oil and gas facilities. This standard consists of several parts providing a generic data model, reference data, and implementation methods. iRINGTools is a tool developed for the exchange of plant design data. This tool supports the implementation methods specified in ISO 15926. In this paper, the exchange of plant design data using iRINGTools is investigated. For this, sample P&ID data was modeled and data exchange experiment was performed. From the experiment, a data exchange procedure based on ISO 15926 is established and design data types that can be practically exchanged using ISO 15926 were identified.

• 전자공학회논문지C
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• 제35C권1호
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• pp.34-41
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• 1998

In this paper, I designed a P1394 serial bus chip as new bus interface architecture which can transmit the multimedia data at the rate of 400 Mbps and guarantee necessary bandwidth. because multimedia data become meaningless data after appropriate time, it is necessary to transfer multimedia data in real time, P1394 serial bus chip designed in this paper support isochronous transfer mode to solve this problem. Also, designed P1394 serial bus chip can transfer high quality video data or high quality audio data because it support the speed of 400 Mbps. While user must set device ID manually in previous interface such as SCSI, device ID is automatically determined if user connect each node with designed P1394 serial bus cable and power on. To design this chip, I verified the behavioral of the entrire system and synthesized layout. Also, I did layout the analog blocks and blocks which must be optimized in full custom.

• 한국임상수의학회지
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• 제36권3호
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• pp.150-154
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• 2019

The purpose of this study was to investigate the etiological distribution, therapeutic outcome, and survival time in canine epilepsy. The medical records of 57 epileptic dogs were reviewed for the evaluation of etiological distribution. Among them, 27 dogs (47%) and 30 dogs (52%) had idiopathic epilepsy (IdE) and structural epilepsy (StE), respectively. Twenty-nine dogs (IdE: 16 dogs, StE: 13 dogs) were evaluated for therapeutic outcome and survival time. The incidence of generalized epileptic seizure (IdE, 56% vs. StE, 44%; P = 0.043) and the median seizure frequency at the time of first presentation (IdE, 2.0/month vs. StE, 13.3/month; P < 0.01) were significantly different between the two groups. Although pre-treatment seizure frequency and duration were not different, the median duration of seizure in the IdE group (0.5 min) was significantly shorter than that in the StE group (3 min) after treatment (P < 0.01). In addition, the median frequency of seizure was relatively lower in the IdE group (0.25/month) compared to the StE group (2.00/month) following antiepileptic therapy (P = 0.053). The median survival time of the IdE group (1.5 years [95% CI, 1.0-2.3 years]) was significantly longer than that of the StE group (0.4 year [95% CI, 0.2-1.3 years]) (P < 0.01). The information on etiological data and intracranial lesions may be useful for predicting treatment response and prognosis in epileptic dogs.

• Journal of Ecology and Environment
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• 제35권1호
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• pp.1-7
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• 2012

To calculate and predict soil carbon budget and cycle, it is important to understand the complex interrelationships involved in soil respiration rate (Rs). We attempted to reveal relationships between Rs and key environmental factors, such as soil temperature, using a laboratory incubation method. Soil samples were collected from mature deciduous (MD), mature coniferous (MC), immature deciduous (ID), and immature coniferous (IC) forests. Prior to measure, soils were pre-incubated for 3 days at $25^{\circ}C$ and 60% of maximum water holding capacity (WHC). Samples of gasses were collected with 0, 2, and 4 h interval after the beginning of the measurement at soil temperatures of 5, 15, 25, and $35^{\circ}C$ (at 60% WHC). Air samples were collected using a syringe attached to the cap of closed bottles that contained the soil samples. The $CO_2$ concentration of each gas sample was measured by gas chromatography. Rs was strongly correlated with soil temperature (r, 0.93 to 0.96; P < 0.001). For MD, MC, ID, and IC soils taken from 0-5 cm below the surface, exponential functions explained 90%, 82%, 92%, and 86% of the respective data plots. The temperature and Rs data for soil taken from 5-10 cm beneath the surface at MD, MC, ID, and IC sites also closely fit exponential functions, with 83%, 95%, 87%, and 89% of the data points, respectively, fitting an exponential curve. The soil organic content in mature forests was significantly higher than in soils from immature forests (P < 0.001 at 0-5 cm and P < 0.005 at 5-10 cm) and surface layer (P = 0.04 at 0-5 cm and P = 0.12). High soil organic matter content is clearly associated with high Rs, especially in the surface layer. We determined that the incubation method used in this study have the possibility for comprehending complex characteristic of Rs.

• 플랜트 저널
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• 제17권3호
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• pp.37-41
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• 2021

P&ID(Piping and Instrument Diagram)는 플랜트의 장치 및 계장 정보를 집약적으로 담고 있는, 엔지니어링 핵심도면이다. 한 장의 P&ID에는 심볼로 표현된 수백 여개의 정보들이 존재하며, 이에 대한 디지털 전산화 작업이 수작업으로 진행되고 있어 많은 인력과 시간이 소요된다. 기존 연구들은 CNN 모델을 이용하여 도면 객체 검출에 성공하였으나, 도면 한 장당 약 30분, 인식률은 90% 정도로 현장에서 구현하기에는 부족한 성능이다. 따라서 본 연구에서는 영역 검출과 객체 인식을 동시에 처리하는 1-stage 객체 검출 알고리즘을 제안하였다. 이미지 레이블링 오픈소스 툴을 이용하여 학습 데이터를 구축하고 딥러닝 모델 학습을 통해 도면 내 심볼 이미지 인식 방법을 제안한다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2005년도 한국컴퓨터종합학술대회 논문집 Vol.32 No.1 (A)
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• pp.1-3
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• 2005

현재 P2P(Peer-to-Peer) 환경에서는 많은 허위 데이터가 생성되면서 불필요한 네트워크 트래픽이 증가하는 문제점이 발생하고 있다. 본 논문에서는 이러한 문제점을 줄일 수 있는 FDR(False Data Reduction) 알고리즘을 제안한다. 이 알고리즘은 멀티미디어 콘텐츠 파일의 헤더 정보를 이용하여 데이터 파일에 고유 ID를 부여함으로써 허위 데이터 생성을 방지한다. 또한 허위 데이터로 확인된 데이터는 각 peer에 저장된 데이터 전송경로를 이용하여 허위 데이터를 삭제함으로써 허위 데이터 증가에 따른 네트워크 트래픽을 감소시킨다.

• Journal of Animal Science and Technology
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• 제55권2호
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• pp.141-146
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• 2013

This study was performed on 26 disabled adolescent participants (16 male, 10 female) with the objective of testing changes in equilibrium after engagement in horseback riding. Participants of total 26 persons were divided into three groups as follows: 6 children with Cerebral Palsy (CP), 14 children with Intellectual Disability (ID) and 6 children with Autism (AT). Participants engaged in therapeutic horseback riding (TR) two times per week for 30 minutes per session. The 26 participants demonstrated a considerable increase in equilibrium ability, with an average increase in equilibrium time of $44.22{\pm}50.70$ sec after TR. Equilibrium also increased according to disability group: CP (P < 0.05), ID (P < 0.001), and AT (P < 0.05). TR should be considered as a possible method for improving functionality in the physically disabled. This data may also be usefully applied to the development of a horseback riding program for the improvement of equilibrium in the disabled.

• 정보관리학회지
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• 제23권3호
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• pp.241-264
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• 2006

이 연구에서는 도서관에서 구독하는 전자자원의 효율적 관리를 위한 필수 전자자원 관리용 메타데이터를 제안하였다. 제안의 근거를 확보하기 위한 기초자료로 DLF ERMI 권고안을 비롯하여 해당 권고안을 제안한 연구컨소시엄에 참여한 UCLA 대학도서관, 노스캐롤라이나주립 대학도서관, Boston대학도서관의 전자자원 관리시스템의 메타데이터의 요소를 활용하였다. 이상의 기초자료를 비교, 분석하여 도출된 결과를 국내 전자자원관리담당자에 검증을 받았다. 그 결과 본 연구에서는 다음과 같이 전자자원 관리용 메타데이터 요소를 제안하였다. 트라이얼 법주는 트라이얼 URL을 포함한 총 12개 요소, 컨소시엄 법주는 컨소시엄 명을 포함한 총 15개 요소, 수서정보 범주는 부서 ID를 포함한 총 24개 요소, 라이선스 범주는 라이선서를 포함한 총 33개 요소, 전자자원 정보는 P-ISSN을 포함한 총 21개 요소, 접근/관리정보는 관리자ID를 포함한 총 20개 요소, 이용통계 범주는 이용통계 유형을 포함한 충 13개 요소, 워크플로우 범주는 워크플로우ID를 포함한 총 14개 요소, 연락정보 범주는 연락ID를 포함한 총 18개 요소이다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제41권3호
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• pp.125-132
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• 2015

Objectives: The purpose of this study was to clarify which findings in magnetic resonance imaging (MRI) are good predicators of pain and mouth opening limitation in patients with temporomandibular joint (TMJ) internal derangement (ID). Materials and Methods: Clinical examinations for pain and mouth opening limitation were conducted for suspected TMJ ID. MRI scans were taken within a week of clinical examinations. On the oblique-sagittal plane image, readings were obtained in terms of the functional aspect of disc position, degree of displacement, disc deformity, joint effusion, and osteoarthrosis. Multiple logistic regression analyses were conducted to identify the predictors of pain and mouth opening limitation. Results: A total of 48 patients (96 TMJs) were studied, including 39 female patients and 9 male patients whose ages ranged from 10 to 65 years. The resultant data showed significant correlations between pain and the MR imaging of the degree of disc displacement (P<0.05). The probability of there being pain in moderate to significant cases was 9.69 times higher than in normal cases. No significant correlation was found between mouth opening limitation and MRI findings. Conclusion: We identified a significant correlation between clinical symptoms and MRI findings of ID. The degree of anterior disc displacement may be useful for predicting pain in patients with TMJ ID.