• 한국안전학회지
• /
• 제10권3호
• /
• pp.42-46
• /
• 1995

To purpose of this study is to model design and motion analysis of tangential cam mechanism using personal computer system. The CAD(Computer Aided Design) system used in this study was constructed with CPU(Central Processing Unit) 80486, RAM(Random Access Memory) 8M, CGA graphic card. By using developed program for tangential cam mechanism, we designed tangential cam models and analysed displacement, velocity, acceleration of follower.

• Journal of Ginseng Research
• /
• 제33권3호
• /
• pp.229-233
• /
• 2009

홍삼농축액분말을 발효주정을 이용하여 과립입자를 제조한 후 이것을 원심력에 의해 부유시키고 성장시켜 100% 홍삼농축액 환을 제조하는 새로운 원심분리 코팅방법을 개발하였다. 본 방법은 홍삼농축액을 순차적으로 분무하면서 흡입공기 온도 60$\sim$70$^{\circ}C$, 분무공기 압력 3.0$\sim$4.0 bar, 투입구 온도 20$\sim$50$^{\circ}C$, 투입속도 1$\sim$1,000 g/min, 회전판속도 1,000$\sim$1,500 rpm, 외부온도 (outlet temperature) 25$\sim$40$^{\circ}C$의 조건으로 제조하였다. 홍삼농축액환의 제조수율은 85% 이었고, 제조에 소요된 시간은 7$\sim$8 시간 이었다. 홍삼농축액환은 홍삼농축액분말에 비해 흡습성 내성이 매우 우수하였고, 비중감소에 의해 물에서의 용해시간도 1 분 이내로 우수하였다. 반면 홍삼의 활성 및 지표성분인 진세노사이드는 제조과정 중 큰 성분 분해없이 안정하였다.

• 융합신호처리학회논문지
• /
• 제7권1호
• /
• pp.33-37
• /
• 2006

본 논문에서는 블루투스를 이용하여 신생아를 중앙 감시하는 장치를 제안하고 구현하였다. 기존의 신생아 중앙 감시 장치는 부피가 크기 때문에 신생아에 대한 부착이 불편하고 유선으로 연결되어 측정 및 감시 시에 휴대가 어려워서 공간의 제약을 가지는 단점이 있다. 이러한 단점을 해소하기 위해서 블루투스를 이용한 신생아 보육장치를 제안하였다. 제안된 시스템은 수신부와 송신부로 구성된다. 송신부는 온도센서, 습도 센서, ECG 측정 장치 및 블루투스 모듈로 구성되며 인류베이터의 온도, 습도 및 ECG 데이터를 측정한 후 블루투스를 이용하여 송신하는 기능을 수행한다. 수신 시스템은 송신 시스템에서 전송한 신호를 블루투스 수신 모듈을 통해 수신하여 인큐베이터 별 송신 시스템의 고유한 식별부호와 심전도 및 온습도 신호를 분리하여 각 신호들을 화면에 표시함으로써 중앙 감시가 효과적으로 이루어지도록 한다. 또한 수신부의 시스템 관리자는 신생아 보육장치와 신생아의 상태를 중앙 감시할 수 있도록 하는 기능을 한다. 제안된 시스템은 다양한 환경에서 신생아 보육장치의 원격 진단에 유용하게 쓰일 수 있을 것으로 생각된다.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.255-255
• /
• 2017

Sesame has been consumed for centuries as flavoring ingredient in eastern Asian countries, especially Korea. Sesame seeds have been used as health food for traditional medicine to prevent disease in Asian countries for several thousand years. Sesame seed has higher oil content (around 50%) than most of the known oilseeds. Sesame oil is rich in monounsaturated and polyunsaturated fatty acids. Extraction of sesame has developed significantly over the years. The mechanical method was an early means of separation which was physical pressure to squeeze the oil out. Nowadays, solvent extraction becomes the commonly used commercial technique to recover oil from oilseeds. In this study, we investigated extraction efficiency and quality of oil affected by cultivars and extraction methods of sesame seed. Different variables were investigated; roasting temperature ($170{\sim}220^{\circ}C$), extraction methods (solvent and physical pressure), forced ventilation system and cultivars. The Contents of B(a)P in sesame oil after roasting at $170{\sim}220^{\circ}C$ were 0.30~2.53 ppm. When we introduced forced ventilation system during roasting, B(a)P Contents were decreased up to 36%. The Oil extraction efficiency on sesame seed was statistically depending on the cultivars and extraction methods. The oil extraction yields of solvent and physical pressure extraction were 56.3% and 44.6%, respectively. Many of sesame cultivars and genetic resources are linolenic acid content of less than 0.5%. The results supported that we have developed a safe and high quality sesame oil processing methods for small and medium-sized companies.

• 한국전문물리치료학회지
• /
• 제5권3호
• /
• pp.21-33
• /
• 1998

The purposes of this study were to ascertain differences of the sensory system, central processing system, effector system, and balance ability according to general characteristics (sex, fall experience, and age), and to identify the contributions of the sensory, central processing, and effector system to balance ability in 83 healthy elderly subjects. The subjects were elderly (over 60 years) who live in Wonju City. All subjects participated in six tests (position sense test, visual acuity, vestibular stepping test, Mini-Mental Status Exam-Korea, strength of dorsiflexors, and Berg Balance Test). Collected data were analyzed by the independent t-test, one-way ANOVA, and stepwise multiple regression. The results were as follows: 1. The results of the six tests according to sex showed that vestibular function was significantly better in women than in men. But visual acuity, cognitive function, strength of dorsiflexors, and balance ability were significantly better in men than in women (p<0.05). 2. There were no significant differences in position sense, visual acuity, vestibular function, cognitive function, strength of dorsiflexors, and balance ability between fallers and non-fallers (p>0.05). 3. However, the results of the six tests according to age (group A: 60-69 years, group B: 70-79 years, group C: 80-89 years) showed significant differences in five tests. In the Scheff$\acute{e}$ test, position sense, visual acuity, and cognitive function showed significantly different results between in group A and group C: the strength of the dorsiflexors was significantly different between in group A and group B, and balance ability was significantly different between in group A and group C, and between in group B and group C (p<0.05). 4. Cognitive function and position sense were positively associated with balance ability. Their power of explanation regarding balance ability was 38% (p<0.05). These results suggest that cognitive function and position sense play an important role in balance ability. This would seem to suggest that programs for evaluation or improvement of elderly's balance ability in the elderly should consider cognitive function and position sense.

• 융합신호처리학회 학술대회논문집
• /
• 한국신호처리시스템학회 2000년도 하계종합학술대회논문집
• /
• pp.257-260
• /
• 2000

In modern battlefield situation, radar and infrared sensors may be located on aircraft having limited computational resources available for real-time computer processing. Hence sensor images are transmitted typically to central stations for processing and automatic target recognition/detection. Owing to the limited bandwidth channels that are typically available between the aircraft and processing stations, images are compressed prior to transmission to facilitate rapid transfer. In this paper we examine the problem of compressing sensor data for transmission, given that target recognition is the end goal. Performance result shows that the front-end target recognition system achieves a relatively high level of performance as well as a high compression ratio.

• 한국문헌정보학회지
• /
• 제31권4호
• /
• pp.83-112
• /
• 1997

본 논문은 고문헌에 적합한 최선의 정보시스템을 구축하기 위해, 고문헌의 개념, 특성과 정리현황, 전산화의 범위와 제도적인 장치, 정보시스템의 구축, 시스템의 사례, 평가와 전망 등을 중심으로 고찰하였다. 고문헌시스템의 구축에 있어서는 국립중앙도서관을 중심으로 하여 정보전산망을 형성하고, 그에 따라 목록정보, 해제, 원은, 검색정보시스템의 통합시스템을 구축하는 방향으로 전개하였다. 사례분석에서는 현재 디지털시스템으로 구축하고 있는 국립중앙도서관고문헌시스템과 자체적으로 DB를 개발하여 공용정보로 활용하고 있는 성균관대학교 고문헌정보시스템을 비교 평가하였으며. 고문헌시스템을 구축하려는 도서관에는 전체적인 지침을 제시하였다.

• 디지털산업정보학회논문지
• /
• 제10권3호
• /
• pp.127-141
• /
• 2014

A Vehicle Tracking System consists of GPS tracking device which fits into the vehicle and captures the GPS location information at regular intervals to a central GIS server, and GIS tracking server providing three major responsibilities: receiving data from the GPS tracking unit, securely storing it, and serving this information on demand of the user. GPS based tracking systems supporting a multi-session processing among RMA, RM, and RCP can make a quick response to various services including other vehicle information between RSU and OBU on demand of the user. In this paper we design RSU lower layers and RCP applications in OBU for a multisession processing simulation and test message processing transactions among RMA-RM and RM-RCP. Furthermore, we implement the additional functions of handling access commands simultaneously on multiple service resources which are appropriate for the experimental testing conditions. In order to make a multi-session processing test, it reads 30 resource data,0002/0001 ~ 0002/0030, in total and then occurs 30 session data transmissions simultaneously. We insert a sequence number field into a special header of dummy data as a corresponding response to check that the messages are received correctly. Thus, we find that GIS service system with a multi-session processing is able to provide additional 30 services in a same speed of screen presentation loading while identifying the number of session processing of Web GIS service, the number of OBU service, and the speed of screen presentation loading by comparing a single session and a multi-session of GIS service system.

• 산업경영시스템학회지
• /
• 제26권3호
• /
• pp.1-9
• /
• 2003

Databases are central to business information systems and RDBMS is most widely used for the database system. Normalization was designed to control various anomalies (insert, update, delete anomalies). However, normalized database design does not account for the tradeoffs necessary for performance. In this research, I model a database design method considering denormalization of duplicating attributes in order to reduce frequent join processes. This model considers response time for processing each select, insert, update, delete transaction, and for treating anomalies. A branch and bound method is proposed for this model.

• 천문학회보
• /
• 제36권2호
• /
• pp.101.1-101.1
• /
• 2011

National Meteorological Satellite Center(NMSC) of Korea Meteorological Administration(KMA) is collecting GNSS data in near-real time for about 80 GNSS stations operated by multiple agencies. (eg. National Geographic Information Institute (NGII), Korea Astronomy and Space Science Institute (KASI), DGNSS Central Office) Using these GNSS data, NMSC developed automatic Total Electron Contents(TEC) derivation system over the Korean peninsular every 1-hour based on single station data processing. We present the TEC result and validation of TEC using International GNSS Service(IGS) global TEC data for the case of quiet time and storm time. The future plans for the system improvement will be discussed.