• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.992-995
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• 2010

본 연구는 기존의 필름 운영체계에서 PACS 운영체계로 전환 시 업무 변화에 따른 보건소 구성원 간의 인식을 조사하고 이들이 가지고 있는 새로운 업무에 대한 저항감을 줄여 새로운 시스템 도입에 적극적으로 적응할 수 있도록 하여 업무의 효율성을 높일 수 있는 기초 자료를 제공하고자 시행하였다. 연구기간은 2009년 6월1일부터 2009년 12월 16일까지이며 연구방법은 대전, 충남북에 소재하고 있는 필름운영체계에서 PACS 체계로 바뀐 보건소의 의사, 방사선사, 간호사, 기타 직종을 대상으로 하였으며 70부의 설문이 분석에 사용되었다. 임상적 유용성 인식은 방사선사(2.8) > 의사(2.7) > 간호사(2.4) > 기타(2.0)로 모든 직종이 향상된 것으로 인식하고 있었으며 PACS 가 필름시스템 보다 임상적으로 사용자 편리서, 접근 용이성 등이 모두 우수하며 임상적으로 유용하다고 답했다. 업무변화 및 효율성 인식은 방사선사(3.2) > 간호사(2.0) > 의사(1.988) > 기타(1.983) 순으로 직종별 차이를 보여 PACS 운영이후 업무가 효율적으로 변화되었다고 인식하고 있었다. 진료 및 근무환경 인식은 방사선사(3.6) > 의사(3.2) > 간호사(3.1) > 기타(3.0) 순으로 진료 및 근무환경이 향상되었다고 답했다. 교육적절성에 관한 인식은 기타(3.5) >간호사(3.0) > 의사(2.8) > 방사선사(2.5) 순으로 직종별 차이를 보였다. 적응 및 만족도 인식에서는 방사선사(2.9) > 기타(1.7) > 간호사(1.6) > 의사(1.5) 순으로 직종별 차이를 보였으며 PACS 운영이후 사용자의 적응도와 만족도가 높다는 것을 알 수가 있었다. 병원정보시스템의 핵심인 PACS 도입과 같은 보건소정보화 과정에서의 보건소 구성원의 인식을 알아본 결과, 임상적 유용성 인식, 교육 적절성에 관한 인식에서는 근무 년 수가 적을수록, 유용성이 높다고 했으며, 업무 변화 및 효율성 인식, 진료 및 근무환경 인식, 적응 및 만족도 의식에서는 근무 연수가 길수록 유용성이 높다고 인식하고 있었다. 성별에 따른 임상적 유용성 인식과 업무 변화 및 효율성 인식에서는 남자가 여자보다 유용하다고 인식하고 있었다. 연령별 차이에 따른 임상적 유용성 인식, 업무 변화 및 효율성 인식, 진료 및 근무 환경 인식은 40대 이상에서 높다고 인식하였다. PACS 도입으로 인해 보건소 구성원의 거부반응과 같은 저항감이나 부담감, 소극적 참여의지 등의 태도나 인식이 예상되었으나 연구 결과 대체적으로 모두 긍정적으로 인식하였으며 PACS가 보건소 구성원들에게 기존 필름체계를 대체할 수 있는 수단으로 유용하게 인식하고 있었다. 다만 본 연구결과는 향후 새로운 PACS 도입 시 성공적인 운영을 위해 직종에 따른 정보 제공 및 맞춤형 훈련 교육이 필요함을 시사하고 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.4
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• pp.337-345
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• 2020

This study analyzed the longitudinal trajectories of father's depression and the changes of relevant parenting practice in fathers' as well as the problematic behaviors and school adaptation of their children. To address these goals, the data from 1,172 samples from the 4th to 8th Korean Children and Youth Panel Survey (KCYPS) was analyzed. The results of this study indicated that the fathers' depressive levels are classified into three latent groups: 1) the high-changing group, 2) the middle-low changing group, and 3) the low-low changing group. The results also revealed that the fathers within the low-low changing group practiced more authoritative but permissive parenting than the fathers in the two other groups. Children from high-changing group showed more problematic behaviors than the children of the two other groups. In addition, the children from the low-low changing group reported higher school adjustment such as academic achievements, and relationships with peers and teachers. Based on these findings, the study discusses the implications for social work practice and further studies.

• The Journal of the Korea Contents Association
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• v.2 no.4
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• pp.30-39
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• 2002

The need for customized website design has been increased these days. There are two approaches for customizing website design. A Static/Selective approach is easily applied to website design, but is hard to provide a more refined customized service due to its lack of accumulation of customer data. In the Transparent/Adaptive approach, it is easy to apply an intrinsic value of customer, but without sufficient customer data, inappropriate customization is liable to occur. In this paper, directions such as "control of customer participation level", "collection of contextual information" and "development of filtering methods for design elements are suggested for the integrated use of these approaches. use of these approaches.

• The Journal of the Acoustical Society of Korea
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• v.29 no.1
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• pp.10-17
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• 2010

In a passive sonar, the improvement of detection performance by using noise cancellation is usually a important problem. In this paper, we have analyzed the own-ship noise cancellation in the two operation modes which are used in the HMS system. In the operator mode, an adaptive line enhancer(ALE) is applied to improve the tonal detection by using broadband noise cancellation and the normalized least mean square(NLMS) algorithm is applied to the design of an adaptive filter. The reference input that is correlated with a primary input can be used to remove the noise incident on the observation directionin the automatic mode. Computer simulations with real sea that data show that the proposed adaptive noise canceller has good performance in passive detection under HMS operation.

• Journal of Internet of Things and Convergence
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• v.9 no.3
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• pp.35-43
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• 2023

This study tried to find out the applicability and effectiveness of the AI-based adaptive learning system in university classes by operating an AI-based adaptive learning system on a pilot basis. To this end, an AI-based adaptive learning system was applied to analyze the operation results of 42 learners who participated in basic mathematics classes, and a survey and in-depth interviews were conducted with students and professors. As a result of the study, the use of an AI-based customized learning system improved students' academic achievement. Both instructors and learners seem to contribute to improving learning performance in basic concept learning, and through this, the AI-based adaptive learning system is expected to be an effective way to enhance self-directed learning and strengthen knowledge through concept learning. It is expected to be used as basic data related to the introduction and application of basic science subjects for AI-based adaptive learning systems. In the future, we suggest a strategy study on how to use the analyzed data and to verify the effect of linking the learning process and analyzed data provided to students in AI-based customized learning to face-to-face classes.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.2
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• pp.73-83
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• 2011

In the manufacturing system, production-planning is very important in effective management for expensive production facilities and machineries. To enhance efficiency of Manufacturing Execution System(MES), a manufacturing system that reduces the difference between planning and execution, certain production-planning needs a dispatching rule that is properly designed for characteristic of work information and there should be a appropriate selection for the rule as well. Therefore, in this paper dispatching rule will be selected by several simulations based on characteristics of work information derived from process planning data. By constructing information that are from simulation into ontology, one of the knowledge-based-reasoning, production planning platform based on the selection of dispatching rule will be demonstrated. The platform has strength in its wider usage that is not limited to where it is applied. To demonstrate the platform, RacerPro and Prot$\acute{e}$g$\acute{e}$ are used in parts of ontology reasoning, and JAVA and FlexChart were applied for production-planning simulation.

• Journal of the Korea Society of Computer and Information
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• v.25 no.4
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• pp.97-103
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• 2020

Wireless sensor networks collect and analyze sensing data in a variety of environments without human intervention. The sensor network changes its lifetime depending on routing protocols initially installed. In addition, it is difficult to modify the routing path during operating the network because sensors must consume a lot of energy resource. It is important to measure the network performance through simulation before building the sensor network into the real field. This paper proposes a WSN model for a low-energy adaptive clustering hierarchy protocol using DEVS kernel models. The proposed model is implemented with the sub models (i.e. broadcast model and controlled model) of the kernel model. Experimental results indicate that the broadcast model based WSN model showed lower CPU resource usage and higher message delivery than the broadcast model.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.313-314
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• 2007

현대 로봇 분야의 개발에 있어 지능형 서비스 로봇은 모듈 기반으로 구성될 수 있다. 여기서 모듈이란 로봇의 특정 태스크들 수행하기 위해 만들어진 자동화 하드웨어 단위를 의미한다. 이러한 모듈 기반의 로봇시스템 내부는 네트워크의 이종성에 따라 다양한 네트워크들을 통해 연결될 수 있기 때문에 다중 모듈간 안정적이고 효율적인 통신을 하기 위해서는 상호운영을 위한 기술이 뒷받침 되어야 한다. 이를 위해 본 논문은 모듈기반의 로봇을 위한 통신용 미들웨어를 제안한다. 제안된 미들웨어는 네트워크 인터페이스 계층과 네트워크 적응 계층으로 나누어진다. 네트워크 인터페이스 계층은 각 이종 인터페이스들을 논리적인 채널로 추상화하는 기능을 갖는다. 반면, 네트워크 적응 계층은 모듈간의 통신을 위한 메시지 형식을 정의하고 주소할당 및 이종 네트워크를 고려한 라우팅 기능들을 갖는다. 결국, 제안된 미들웨어는 두 계층을 통해 상위 로봇 어플리케이션 개발자들에게 네트워크의 투명성을 보장할 수 있으며 모듈 기반의 로봇내에서 모듈간의 안정적이고 효율적인 통신을 지원한다.

• The KIPS Transactions:PartD
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• v.13D no.6 s.109
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• pp.839-846
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• 2006

Context-aware adaptive service for overcoming the limitations of wireless devices and maintaining adequate service levels in changing environments is becoming an important issue. However, most existing studies concentrate on an adaptation module on the client, proxy, or server. These existing studies thus suffer from the problem of having the workload concentrated on a single system when the number of users increases md, and as a result, increases the response time to a user's request. Therefore, in this paper the adaptation module is dispersed and arranged over the client, proxy, and server. The module monitors the contort of the system and creates a proposition as to the dispersed adaptation system in which the most adequate system for conducting operations. Through this method faster adaptation work will be made possible even when the numbers of users increase, and more stable system operation is made possible as the workload is divided. In order to evaluate the proposed system, a prototype is constructed and dispersed operations are tested using multimedia based learning content, simulating server overload and compared the response times and system stability with the existing server based adaptation method. The effectiveness of the system is confirmed through this results.

• Water for future
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• v.17 no.1
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• pp.37-43
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• 1984

Linear tracking problem I analytically solved with the buadratic performance measure. This theory has the inherent drawbacks in application, because the tracking assumes no boundness of the control and state vectors. The tracking was performed to the discrete system and interrupted subject to the violation. Multi-level tracking was intended based on the concept of the Bellman's Principle of Optimality in this paper. The tracking is iterated to get the desired trajectory which is not known in advance. An application was made to real operation of 6 rervoirs over 36 monthly periods for the Han river.