• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2004년도 추계학술대회 논문집
• /
• pp.60-63
• /
• 2004

An innovative in-core neutron flux mapping system has been developed and applied successfully for service in a commercial pressurized water reactor. With the benefit of double indexing path selector (Dip $s^{ⓡ}$) mechanism, the reliability of the detector drive system has been improved five times higher than that of conventional systems, and the problems caused by the serious friction generated between the detector cable and guide tubing has been solved completely because the Dip $s^{ⓡ}$ architecture allows the detector guide tubings to have larger curvature and shorter length in nature. The simple and fast maintenance is particularly emphasized in the detector drive system to secure minimum radiation exposure to the maintenance personnel by optimizing the number of components and providing easy access to the components. The programmable logic controller based digital controller with Window $s^{ⓡ}$ based operator s console provides fully automated and user friendly operation and maintenance support means.

• 호남수학학술지
• /
• 제30권1호
• /
• pp.197-203
• /
• 2008

We show the existence of the unique solution of the following system of the nonlinear wave equations with Dirichlet boundary conditions and periodic conditions under some conditions $U_{tt}-U_{xx}+av^+=s{\phi}_{00}+f$ in $(-{\frac{\pi}{2},{\frac{\pi}{2}}){\times}R$, ${\upsilon}_{tt}-{\upsilon}_{xx}+bu^+=t{\phi}_{00}+g$ in $(-{\frac{\pi}{2},{\frac{\pi}{2}}){\times}R$, where $u^+$ = max{u, 0}, s, t ${\in}$ R, ${\phi}_{00}$ is the eigenfunction corresponding to the positive eigenvalue ${\lambda}_{00}$ of the wave operator. We first show that the system has a positive solution or a negative solution depending on the sand t, and then prove the uniqueness theorem by the contraction mapping principle on the Banach space.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제9권1호
• /
• pp.68-86
• /
• 2015

Future wireless network aims to integrate different radio access networks (RANs) to provide a seamless access and service continuity. In this paper, a new resource denotation method is proposed in the WLAN and LTE heterogeneous networks based on a concept of spectral bandwidth mapping. This method simplifies the denotation of system resources and makes it possible to calculate system residual capacity, upon which an economic model-based network selection algorithm is designed in both under-loaded and over-loaded scenarios in the heterogeneous networks. The simulation results show that this algorithm achieves better performance than the utility function-based access selection (UFAS) method proposed in [12] in increasing system capacity and system revenue, achieving load balancing and reducing the new call blocking probability in the heterogeneous networks.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2022년도 추계학술대회
• /
• pp.550-552
• /
• 2022

비디오 월 컨트롤러는 여러 개의 모니터를 연속적으로 배치하여 하나의 큰 스크린으로 표출하는 특수한 형태의 멀티 모니터를 가진다. 멀티스크린에 여러 영상을 동시에 표출하고자 하는 경우, 운영자는 표출할 영상과 모니터를 미리 매핑하여 저장한다. 멀티스크린의 모니터 개수가 많지 않은 소규모의 시스템에서는 영상과 모니터의 매핑 작업이 단순하지만, 모니터의 개수가 늘어날수록 매핑의 경우의 수가 늘어나므로 업무효율이 저하된다. 이에 본 논문에서는 연관 규칙 기반의 학습을 이용하여 영상을 표출할 모니터를 추천하여 매핑 작업의 효율성을 향상시키는 모델을 제안한다.

• 수면정신생리
• /
• 제4권1호
• /
• pp.96-106
• /
• 1997

The clinical validity of a korean EEG and EP mapping system(Neuronics) was evaluated with schizophrenic patients(n=20), normal controls(n=19), and 10 patients with central nervous system disease(8 patients with cerebrovascular accident, 1 patient with brain mass, and 1 patient with periodic paralysis). In the normal control group, the pattern of resting computerized EEG with eyes closed showed normal parieto-occipital dominance of alpha wave. Compared with normal controls, schizophrenic patients had more delta activity in the frontal region, and less alpha activity especially in the parieto-occipital region. In most cases patients with cortical organic lesions(n=5) revealed increased delta and theta activity and decreased alpha activity on the lesion areas. These findings were compatible with their MRI and clinical findings. However in the cases of subcortical lesions(n=5) EEG showed various findings which suggest diverse influences of subcortical abnormalities on cortical activities. The P300 of schizophrenic group was smaller and more delayed than those of normal controls. These results are generally compatible with the previous studies using other EEG and EP mapping systems consequenty and suggest that the this EEG and EP mapping system(Neuronics) has clinical validity.

• 한국컴퓨터정보학회논문지
• /
• 제27권11호
• /
• pp.67-80
• /
• 2022

본 논문에서는 RML 매핑 방식으로 생성된 RDF 지식 그래프의 구조를 묘사하고 검증할 용도의 ShEx 스키마를 자동으로 생성하는 시스템을 제안한다. ShEx 스키마는 제약 조건들로 구성된다. 제안된 시스템은 대부분의 제약 조건을 RML 매핑 규칙을 변환하여 생성한다. 매핑 규칙에서 유도된 제약 조건만으로 구성한 스키마는 사용자가 RML 매핑으로 생성한 그래프의 구조를 파악하는 데 도움을 주는 용도로는 부족함이 없지만 정교한 검증 용도로 사용하기에는 충분치 않다. 검증 용도에 부합하는 스키마가 요구될 경우, 제안된 시스템은 RML 매핑의 입력 데이터 소스에서 추출한 메타데이터를 사용해 만든 제약 조건이 추가된 스키마를 생성할 수 있다. 제안된 시스템이 지원하는 입력 데이터 소스 유형은 CSV, XML, JSON, RDBMS다. 297개의 테스트 케이스로 구성된 실험에서 보인 결과는 제안된 시스템이 RML 매핑으로 생성된 RDF 그래프 검증을 위해 범용적으로 사용될 수 있음을 보여준다.

• Journal of applied mathematics & informatics
• /
• 제27권3_4호
• /
• pp.693-702
• /
• 2009

In this paper, we introduce and study a system of mixed variational inequalities in Banach spaces. By using J-proximal mapping and its Lipschitz continuity for a nonconvex, lower semicontinuous, subdifferentiable, proper functional, an iterative algorithm for computing the approximate solutions of system of mixed variational inequalities is suggested and analyzed. The convergence criteria of the iterative sequences generated by iterative algorithm is also discussed.

• 한국산업정보학회:학술대회논문집
• /
• 한국산업정보학회 2003년도 추계공동학술대회
• /
• pp.135-144
• /
• 2003

In this paper, the implementation techniques of intelligent nuclear material surveillance system based on the SOM(Self Organized Mapping) was described. Unattended continuous surveillance systems for nuclear facility result in large amounts of data, which require much time and effort to inspect. Therefore, it is necessary to develop system that automatically pinpoints and diagnoses the anomalies from data. In this regards, this paper presents a novel concept of a continuous surveillance system that integrates visual image and radiation data by the use of neural networks based on self-organized feature mapping

• 한국통신학회논문지
• /
• 제37B권11호
• /
• pp.984-992
• /
• 2012

본 논문에서는 모바일 중심의 미래 인터넷을 위한 Mobile-Oriented Future Internet (MOFI) 구조를 소개하고, 호스트 Identifier(ID)와 Locator(LOC)의 분리를 토대로 설계된 MOFI 구조에서 ID와 LOC의 분산형 매핑 제어 기법을 제안한다. 제안하는 Dynamic and Distributed Mapping System (DDMS) 기법에서는 ID와 LOC의 매핑 기능을 각 도메인의 Access Router(AR)에 분산시킴으로서 기존의 Proxy Mobile IP (PMIP) 프로토콜의 중앙집중형 방식의 문제점을 개선하였다. 성능 분석을 위해 리눅스 플랫폼에서 MOFI 구조와 제안하는 매핑 제어 기능을 구현하였고, 테스트베드 실험을 통해 기존 PMIP에 비해 제안 기법이 데이터 전송 측면에서 더 효율적임을 확인하였다.

• 한국학교보건학회지
• /
• 제29권3호
• /
• pp.286-298
• /
• 2016

Purpose: The aim of this study was to identify the effects of community mapping based on volunteered Geographic Information System on smoking prevention among female middle school students. Methods: This study used a triangulation method which integrated quantitative data from a "pre-post" study on a nonequivalent control group and qualitative data from focus group interviews. Data was collected from 4 August 2015 to 10 January 2016. The experimental group (n=24) participated in community mapping along with education on smoking prevention and the control group (n=28) participated only in routine education. Both groups were measured on their knowledge and attitude related to smoking prevention through self-report questionnaires. The quantitative data was analyzed by descriptive statistics, $x^2$ analysis, and t-test using SPSS 23.0. The qualitative data was collected through focus group interviews to investigate the social-environmental effect of smoking prevention. Results: Knowledge related to smoking prevention was significantly higher (t=2.591, p=.013) in the experimental group than the control group. But attitude related to smoking prevention did not show significant differences between the two groups. When asked about their experiences of the community mapping program, it turned out to be a process where they could learn practical knowledge related to smoking prevention and experience their individual practices manifested as collective intelligence while working together with community members. The study found that community mapping had an effect on smoking prevention from a social and environmental aspect. Conclusion: To be more effective, school education on smoking prevention should be provided in connection with the community. It is also desirable to provide an opportunity where adolescents can experience discovering and solving practical problems along with their own community.