• 시스템엔지니어링학술지
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• 제15권2호
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• pp.17-30
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• 2019

Due to difficulties in tracking design information of existing document-based configuration management, the research on the development of plant SysML model was started to apply the model-based system engineering methodology to comprehensively manage various design information. However, until now, in order to create the SysML model, the engineers are checking the design information and inputting it to the SysML model. This process requires a lot of time and manpower, it is required to minimize it. Therefore, this study has recognized the problem, a plug-in that extracts the plant design information in the design document and automatically converts the SysML plant model from it. Specifically, the development was performed in the following order. First, the extraction file was selected as the most commonly used Excel file as the plant design document. Next, the design information in the document was analyzed, and extracted information including tag number, name, and the capacity were selected. Finally, the plant SysML model conversion module was implemented. The developed plug-in is confirmed that the task load of the engineers by the SysML model conversion can be minimized and the model can be generated more quickly and accurately.

• 교육시설 논문지
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• 제28권2호
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• pp.3-10
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• 2021

Community-based design is also becoming important in Korea recently. However, the existing design methods of the "conformity" method had the problem of excluding the participation of residents. Therefore, the "decision-making" method, in which residents participate in the design themselves, is drawing attention. Development of specific methods is important for residents to actively participate in "decision making." The theory of "Design Games" has long been studied as a method of community-based design in many countries. The old downtown areas of Jeju Special Self-Governing Province are increasing in number of buildings abandoned due to aging and declining. Abandoned buildings are causing many social problems. A decision-making method has been developed in Jeju for the regeneration design of abandoned buildings. This study conducted a design workshop involving residents on abandoned buildings in the old city center of Jeju City. The possibility and task of decision-making method were analyzed. As a result, participating residents were actively involved in decision-making. It also helped residents understand and learn about the attractions of the neighborhood. Meanwhile, there were also difficulties in communicating among some participants. This is a structural problem with this method. Studies have also shown that it is important for residents themselves to try to understand the neighborhood.

• 디지털융복합연구
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• 제14권8호
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• pp.453-460
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• 2016

이 연구는 국내 3사 영화관 CGV, 메가박스, 롯데시네마의 애플리케이션 예매 시스템을 비교하여 그에 대한 사용성을 평가하고, 문제점을 파악해 더욱 편리한 모바일 예매를 위한 사용자 경험을 알아보는 것에 목적을 두었다. 각 3사의 애플리케이션의 사용 경험이 있는 실험집단을 모집하여 1차 task로 각 영화관 애플리케이션에서 영화 예매 완료를 진행한 후 2차로 스티븐 앤더슨(Stephen Anderson)의 Creating Pleasurable Interfaces 모형을 토대로 만든 질문을 통해 심층인터뷰를 진행하였다. 실험결과, 사용자들은 기본적인 예매 기능이 원활히 진행되고, 전체적인 정보 정렬이 잘 이루어져 있는 구성을 선호하였다. 특히 결제 방식이 편리한 애플리케이션에 대한 만족감이 높았다. 따라서 개선 방안으로 사용자들이 한눈에 인식할 수 있는 디자인과 별도의 결제 시스템이 아닌 애플리케이션 내에서의 간편한 결제 시스템이 요구된다. 이 연구가 스마트폰 애플리케이션을 통하여 영화를 예매하는데 사용자 경험을 극대화할 수 있는 서비스 방안을 모색하는 데 도움이 될 것으로 기대한다.

• 정보관리학회지
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• 제15권3호
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• pp.133-150
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• 1998

본 연구에서는‘조직지식중심적 지식경영’을 위해 지식창조원리로서 음양이론을 도입하여 영역지식 (陽의 지식)과 업무지식(陰의 지식)이 음양(陰陽)의 순환적 구조로서 상호 작용하여 조직지식으로 창출되는 과정을 저장하여 재활용하기 위한 지식 창조적 조직메모리를 제안하였다. 지식 창조적 조직메모리 구축을 위하여 객체 지향적 방법론을 적용하여 영역지식과 업무지식의 순환적 흐름을 주도하는 3개 지식 컴퍼넌트를 설정하여 조직지식을 설계하였다. 조직지식은 기존의 정보시스템에 포함된 데이터베이스 스키마. 프로세스 모델 또는 지식베이스의 의미네트워크(Semantic Network), 프레임(Frame) 등을 수용하기 위해 (i) 지식객체와 (ⅱ) 객체간의 관계 및 (ⅲ) 관계정도를 정의한 그래프구조로서 설계하였다. 이러한 조직지식의 설계는 지식마이닝 기법인 사례기반추론(Case Based Reasoning)등을 활용한 새로운 조직지식의 생성에 기여할 수 있다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권3호
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• pp.324-340
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• 2010

Video streaming service over wireless networks is a challenging task because of the changes in the wireless channel conditions that can occur due to interference, fading, and station mobility. To provide an efficient wireless video streaming service, the rate adaptation scheme should improve wireless node performance and channel utilization. Moreover, the quality adaptation scheme should be considered at the streaming application. To meet these requirements, we propose a new cross-layer design for video streaming over wireless networks. This design includes the rate and quality adaptation schemes. The rate adaptation scheme selects the optimal transmission mode and resolves the performance anomaly problem. Based on performance improvement by the proposed rate adaptation scheme, our quality adaptation scheme improves the quality of video streaming. Through performance evaluations, we prove that our cross-layer design improves the wireless channel utilization and the quality of video streaming.

• 한국정밀공학회지
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• 제13권4호
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• pp.97-108
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• 1996

Optimal design of fault-tolerant, spatial type redundant manipulators is treated in this paper. Design objective is to guarantte three degree-of -freedom translational motions in the task space, upon failure of one arbitrary joint of 4 degree-of-freedom manipulators. Noticing the nonfault-tolerant characteristics of current, wrist-type industrial manipulators, five different fault-tolerant spatial-type manipulators which have 4 degree-of-freedom structures with one joint redundancy are suggested. Faault-tolerant character-sitics of two redundant manipulators anr investigated based on the analysis of the self-motion and the null-space elements. Finally, in order to maximize the fault-tolerant capability, optimal design is performed for a spatial-type manipulator with respect to the global isotropic index, and the performance enhancement of the optimized case is shown by simulation.

• 한국의류학회지
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• 제42권5호
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• pp.884-896
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• 2018

This study investigates coping strategies of overweight or underweight males in Korea. For this purpose, the authors identify types of stress related to weight management. A qualitative method was utilized to collect the data related to successful weight management experiences of males aged 20-37 years. Data were analyzed based on a motivation theory of coping, which suggests coping strategy elements. The results of this study identified the stress related to weight: dissatisfaction with appearance, others' disapproval of appearance, health problems, weaker athletic ability, negative self-perception, passiveness about appearance, lower romantic attractiveness, others' disapproval of lower romantic attractiveness, weakened task execution capability, and negative stereo-types about task execution capability. In addition, six coping strategies were suggested: improved appearance, improved physical function, improved positive self-perception, more choices to improve appearance, enhanced romantic relationship, and enhanced job performance. This study shows that weight problems in modern society are diverse and complex. Therefore a man who has abnormal weight needs to clarify his stress first and then proposes strategies that are appropriate for each type of stress.

• 정보처리학회논문지D
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• 제12D권7호
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• pp.957-964
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• 2005

웹 환경이 급변함에 따라 인간과 컴퓨터간의 복잡한 상호작용을 지원하기 위한 인터페이스에 대한 설계가 필요하게 되었다. 본 논문에서는 사용자 인터페이스의 품질 향상을 위하여 객체 모델링 기법을 제시한다. 사용자 인터페이스의 가시적 응집도 향상을 위하여 비즈니스 이벤트객체 모델링, 태스크 객체 모델링, 트랜잭션 객체 모델링, 폼 객체 모델링과 같은 4 가지의 비즈니스 이벤트 객체를 제안한다. 본 논문에서 제시하는 4단계 설계를 통하여 사용자 인터페이스 프로토타입의 가시적 응집도를 향상시킬 수 있다. 이것은 비즈니스 이벤트의 가시적 응집도를 향상시킬 수 있도록 하고, 비숙련된 설계자도 향상된 사용자 인터페이스 프로토타입을 개발할 수 있도록 한다 또한 비즈니스 태스크의 이해도를 증진시키고 프로토타입 시스템 개발 회수를 줄일 수 있다.

• 한국군사과학기술학회지
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• 제11권4호
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• pp.59-67
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• 2008

In the next near future, the human would like to use the small unmanned ground vehicle(SUGV) on the diverse fields. Specially the world of today is tried to apply with operating the task on very difficult working environments such as some dangerous or unreachable area. To work this task, this vehicle should be guaranteed with the high level of reliability, safety, and performance. In this paper, we propose to focus on not only the functional requirements, but also the non-functional requirements based on software architecture at the design stage for developing the embedded system. Through focusing on the non-functional requirements on this software architecture, we can obtain the design goal of the target system and also show the enhancement of reliability, safety and performance with 'Vtune' performance analysis tool.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권7호
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• pp.3733-3755
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• 2019

E-cash has its merits comparing with other payment modes. However, there are two problems, which are how to achieve practical/complete tracing and how to achieve it in compact E-cash. First, the bank and the TTP (i.e., trusted third party) have different duties and powers in the reality. Therefore, double-spending tracing is bank's task, while unconditional tracing is TTP's task. In addition, it is desirable to provide lost-coin tracing before they are spent by anyone else. Second, compact E-cash is an efficient scheme, but tracing the coins from double-spender without TTP results in poor efficiency. To solve the problems, we present a compact E-cash scheme. For this purpose, we design an embedded structure of knowledge proof based on a new pseudorandom function and improve the computation complexity from O(k) to O(1). Double-spending tracing needs leaking dishonest users' secret knowledge, but preserving the anonymity of honest users needs zero-knowledge property, and our special knowledge proof achieves it with complete proofs. Moreover, the design is also useful for other applications, where both keeping zero-knowledge and leaking information are necessary.