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박원주 대한의학회 2014 Journal of Korean medical science Vol.29 No.9
This investigation enrolled 570 healthy young males gathered from all over the country formilitary service at the Republic of Korea Air Force boot camp. It confirmed RSV IgGseroprevalence by utilizing the enzyme immunoassay method just prior to undergoingbasic training. The mean age of this study was 20.25 ± 1.34 yr old. The results of theirimmunoassay seroprofiles showed that 561 men (98.4%) were positive, 2 (0.4%) werenegative and 7 (1.2%) were equivocal belonging to the grey zone. It was confirmed thatRSV is a common respiratory virus and RSV infection was encountered by almost all peoplebefore reaching adulthood in Korea. Nine basic trainees belonging to the RSV IgG negativeand equivocal grey zone categories were prospectively observed for any particular vulnerabilityto respiratory infection during the training period of two months. However, these ninemen completed their basic training without developing any specific respiratory illness.
A Study of the Real-time Sensing by the Optical Current Sensor for GIS
박원주,Young-Min Kim 한국조명.전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.7
In this study, a Web server was constructed using LabVIEW's DataSocket, which makes possible acquisition, analysis, and saving in real time. The output value of the optical current sensor at the web server PC was measured and the output value was displayed using the Web browser of the client PC. DataSocket by LabVIEW makes the construction of a Web server easier than other languages and is compatible with other application programs. An optical current sensor was composed using a 1310 [nm] laser diode, and 9/125 [] standard single mode optical fiber and was created to be a close type sensor. Data measurement using Web servers has the advantage of monitoring electric power systems at a great distance and can fuse IT technology and electric power systems. Also, this measurement uses inexpensive mounting and programming when compared to existing measurement equipment allowing the construction of a measurement system in any situation or surrounding.
클라우드 서비스 사업자 파트너 관리 정책 수립에 관한 연구
박원주,서광규,Park, Wonju,Seo, Kwang-Kyu 한국반도체디스플레이기술학회 2021 반도체디스플레이기술학회지 Vol.20 No.2
In Korea, where the world's first cloud computing development law was created, cloud service technology has been developing so far, and the industries to which artificial intelligence and big data technologies can be applied based on this are increasing. It is important for domestic and overseas cloud operators to secure many partners in order to provide optimal services to users. It is also important to systematically develop the partner's technology and discover new partners. In particular, the public, medical, and financial sectors are industrial fields that are difficult for domestic as well as global cloud service providers to expand without the help of partners. This study analyzes partner policies for industries caused by domestic regulations through domestic and foreign cases, and aims to establish partner management policies optimized for the domestic environment.
朴元柱 영남이공대학 1987 論文集 Vol.16 No.-
Humidity control can be needed variously in the industry (particularly precision. food, textile, electronic sectors) to manage good production and quality control, specially the progress of modes automatic systems depend on various sensor development. In this study, The characteristics about TiO₂ -V₂O₃ Ceramics humidity-sensitive element as humidity sensor application was inverstigated. The experimet results that ⅰ) when sintering temperate was high, the humidity-sensitive characteristics showed high resistance values. ⅱ) seusitive characteristics was showed the best in 1~3 (mol%) of V₂O_(5) addition. ⅲ) frequency dependance have no influenced on over 1Kllz frequency bands.
플래시 메모리 기반 DBMS의 질의 최적화를 위한 새로운 비용 모델 설계 및 구현
박원주,박상원 한국정보과학회 2009 데이타베이스 연구 Vol.25 No.2
최근 디지털 카메라, MP3 플레이어, 핸드폰, 노트북 등 다양한 분야에서 플래시 메모리를 사용한다. 플래시 메모리는 소형화, 대용량화, 저전력화, 비휘발성, 고속화 그리고 충격에 강한 저장장치이다. 하지만 플래시 메모리는 하드웨어적 특성으로 인해 쓰기 전 소거(erase-before-write)연산을 수행해야만 하고, 읽기, 쓰기, 소거의 연산 속도가 다르다. 따라서 이러한 플래시 메모리를 효율적으로 동작시키기 위해서 FTL이 필요하다. FTL은 플래시 메모리의 단점을 보완해주면서 상위 파일 시스템을 그대로 사용할 수 있다. 많은 DBMS는 디스크기반의 비용 모델을 토대로 질의를 수행하는데 만약 저장 장치가 플래시 메모리로 바뀌면 DBMS의 질의 최적화를 위한 비용 모델은 디스크기반에서 플래시 메모리기반의 비용 모델로 변경될 필요가 있다. 본 논문에서는 이러한 비용 모델을 제시하고, 디스크 기반 비용 모델과 비교하여 새로운 비용 모델과의 차이를 보인다. Flash memory is widely used as storage and portable devices such as digital cameras, MP3 players,cellular phones and laptop computers due to its characteristics: large volume, non-volatility, low power consumption, and good performance. However, a block in flash memory should be erased to write data because of its hardware characteristic called erase-before-write architecture. Erase operation is much slower than read or write operation. Hence, we can use FTL to overcome this problem without any modifications of upper file system. Many DBMSs execute some queries based on diskbased cost model. But if flash memory replaces disk as a storage device, disk-based cost model for query optimization cannot be used at flash-based databases. We propose flash-based cost model and compare it to disk-based one.