• Journal of Mechanical Science and Technology
• /
• 제20권10호
• /
• pp.1527-1533
• /
• 2006

Workflow systems have benefited the enterprise and customer in many aspects. But with the increasing complexity of the system, workflow design becomes a complicated and time-consuming process. In this paper, we model the system based on the Hierarchical Colored Petri Nets (HCPN) to avoid the complexity of the system, and the super nets of the model are abstracted as independent components to increase the flexibility, acceptability and maintainability of the system. Another important characteristic of this model is its convenience for reuse and workflow mining. The development process of the overhead traveling crane was given to demonstrate the proposed method.

• 정보처리학회논문지:소프트웨어 및 데이터공학
• /
• 제5권2호
• /
• pp.51-58
• /
• 2016

최근 SW 교육의 중요성이 강조되고 있으며, 앱 인벤터는 SW 교육의 도구로써 주목받고 있다. 본 연구에서는 디자인기반학습 모형에 기반을 두고 여기에 컴퓨팅 사고력 계발을 위한 요소를 통합하여 앱 인벤터 학습 모형을 개발하였다. 그리고 이 모형에 따라 학생을 지도하고 학생이 작품을 제작한 과정과 변화를 분석하였다. 학생은 앱을 개발하는 과정에서 문제를 파악하고 해결하는 방안을 절차적으로 고안하고 이를 코드로 직접 구현하는 실제적인 경험을 통해 성취감과 자신감을 얻는 모습이 보였다.

• 정보처리학회논문지D
• /
• 제15D권6호
• /
• pp.841-856
• /
• 2008

요구사항에 대한 우선순위는 릴리즈 플랜을 위한 핵심적 활동이기 때문에 요구공학에서 특히, 오픈 시장(Open Market)을 고객으로 하는 시장 주도형 제품개발에 있어서 중요하다. 또한, 요구사항 우선순위는 주어진 요구사항 간의 상호의존 관계를 바탕으로 프로세스 모델, 제품 종류 및 우선순위 프로세스에 대한 경험 등을 사전에 고려하여 우선순위화를 위한 방법과 관점 등을 선택하는 활동이 중요하다. 그러나, 기존 연구들은 요구사항간의 상호의존 관계를 정적 관계만 고려하였고, 고려된 관점들이 비용/가치 등으로 한정적이고 체계적인 우선순위 프로세스를 제공치 못하고 있다. 따라서 본 논문에서는 우선순위화를 위한 모델을 설계하고 개발 제품의 목표와 조직에 적합하도록 우선순위 방법과 관점 등을 선택할 수 있는 적응적 요구사항 우선순위 기법 및 프로세스를 제안한다. 특히, 요구사항간의 정적/동적 상호의존 관계 유형을 정의하고, 다양한 관점에 의한 우선순위화를 통해 릴리즈 플랜의 완성도를 높였다. 이로써 상호의존 관계 및 다양한 관점을 고려한 우선순위 모델기반의 체계적인 우선순위 프로세스를 정립하여 유연하고 충족스러운 우선순위화와 릴리즈 플랜을 통하여 합리적으로 의사결정을 도모할 수 있다.

• 의학교육논단
• /
• 제22권3호
• /
• pp.173-188
• /
• 2020

Medical humanities education (MHE) is as essential as basic medical sciences and clinical medicine education. Despite the importance of MHE, MHE curriculum development (CD) has proven to be challenging. This critical review examines the MHE CD at one medical school. The critical review methodology was developed based on Kern's six step CD model to systematically examine the CD of "Doctoring and Medical Humanities (DMH)" at the Yonsei University College of Medicine. Five review questions were developed related to (1) necessity, (2) direction and purpose, (3) design, (4) operation, and (5) evaluation of CD based on Kern's model. The review showed that the process of DMH CD mapped to components of Kern's model. The DMH curriculum content selected was closely related to medical practice and aimed to combine the acquisition of understanding and skills by designing a student-participatory curriculum based on clinical cases. Assessment methods that emphasized students' reflections were actively introduced in the evaluation section. Since the regular committee for DMH continued the work of the special ad hoc committees for DMH CD, the CD was effectively completed. However, the planning and evaluation functions and responsibilities of the DMH committee need to be strengthened. Despite the apparent limitations, the fact that students showed a high satisfaction rate and preferred small group discussions based on clinical cases has significant implications in the instructional design of MHE, where changes in self-awareness and attitude are more important than the acquisition of information. It is necessary to systematically review and study students' reflection results produced by the changed assessment methods and to develop assessment indicators for MHE that reflect the achievements of the MHE competencies of students.

• 대한임베디드공학회논문지
• /
• 제18권2호
• /
• pp.81-87
• /
• 2023

With the development of BCI devices, it is now possible to use EEG control technology to move the robot's arms or legs to help with daily life. In this paper, we propose a customized vehicle control model based on BCI. This is a model that collects BCI-based driver EEG signals, determines information according to EEG signal analysis, and then controls the direction of the vehicle based on the determinated information through EEG signal analysis. In this case, in the process of analyzing noisy EEG signals, controlling direction is supplemented by using a camera-based eye tracking method to increase the accuracy of recognized direction . By synthesizing the EEG signal that recognized the direction to be controlled and the result of eye tracking, the vehicle was controlled in five directions: left turn, right turn, forward, backward, and stop. In experimental result, the accuracy of direction recognition of our proposed model is about 75% or higher.

• 한국BIM학회 논문집
• /
• 제5권1호
• /
• pp.1-7
• /
• 2015

Modular technology has become a major issue of the construction industries to enhance their productivity. Modular bridge construction generally requires the data exchange between the contractors, designers, fabricators and constructors. Therefore, a readily accessible information model interface module based on BIM technology is essential for their communication during a project life-cycle. In this study, BIM based information model interface module for a modular pier was developed. For the information models, the PBS(Product Breakdown Structure) and LOD(Level of Development) were defined. Next, all components of a modular pier were conducted by the parametric modeling technique, and then 3D cell library interface was developed. An nterface module was also developed using VBA(Visua basic Application) for exchanging a data from 3D model library to other softwares such as Microstation, AutoCad and Excel and was connected with MS Access database. The developed information model interface module would improve the design quality of the modular pier and reduce the time and cost for design. Updated 3D information models could be utilized for the fabrication, assembly, and construction process for modular piers.

• KEPCO Journal on Electric Power and Energy
• /
• 제7권2호
• /
• pp.277-283
• /
• 2021

Power plant simulators have been used for operator training, control verification and engineering verification. In general, simulators can be used in the place where they are installed by only single user group at a time. Considering high cost of simulator development, a lot of available scenarios, the diversity of user level and accessibility based on users' work location, development of simulator system that can be used by multiple user groups regardless of location is required in order to enhance utilization of simulators. In this paper, the simulator system that can be used by multiple user group simultaneously without location limitation is proposed. The simulator system is composed of simulator servers, database servers, HMI servers, a web server, web clients. Simulator server consists of control model, process model that are developed for Circulating Fluidized Bed power plant located overseas. A web server manages user accounts, operation procedures, multiple server access between web client group and simulator server group. In other words, a web server makes a user group select a simulator server at a time. The developed simulator system is integrated after implementing process model, control model, HMI, and web server. Web client systems are installed on local site where power plant is located, while simulator servers, HMI servers, database servers, and a web server are located in KEPCO RI. The developed simulator system is verified by steady-state test, malfunction test and so on via remote access.

• Asia pacific journal of information systems
• /
• 제13권2호
• /
• pp.199-217
• /
• 2003

Based on the IS literature on software project risk management, we developed an integrated model to investigate the risk factors and risk management factors in project development. We also analyzed the interrelation between project risk and project risk management. The questionaries are collected from 83 project leaders. We tested reliability and validity of the measure and analyzed the obtained data. The results support our risk-based hypothesis that shows the importance of risk management in reducing project risks and improving performance of project and process.

• 한국CDE학회논문집
• /
• 제7권1호
• /
• pp.57-65
• /
• 2002

The purpose of this research is to develop a collaborative architectural design system. Design collaboration requires an extensive use of communication methods as well as the participation of various experts from different domains. Such facts address several issues when the Internet and digital media are able to create a completely new work environment. The building design process was studied, and possible modes of design collaboration were defined. A prototype system is being developed in accordance with the defined collaboration model. The system integrates a set of communication tools and web-based design media. Such media include a synchronous multi-user web CAD tool, a schematic 3D design tool, and a electronic whiteboard. A project database was designed in order to coordinate the project-wide communication which elaborates technologies such as web-based data access. In order to find out the effectiveness of the system, a usability test was performed both in quantitative and qualitative manner. The research will contribute to the development of world-wide design and construction collaboration through the Internet, which is becoming a mainstream building process model.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
• /
• 제14권7호
• /
• pp.733-737
• /
• 2008

비즈니스 프로세스 모델링은 고객의 요구사항을 만족하기 위해 기업들이 취하는 일련의 행위들을 그래픽적인 요소로 표현한 것이다. 오늘날 빠르고 다양한 형태로 고객의 요구사항이 변하게 됨으로써 비즈니스 프로세스 모델에서는 일어날 가능성이 있는 변화요소들을 표현하여 급변하는 요구사항에 대해 빠르게 대처할 수 있는 능력을 제공해야 한다. 본 논문에서는 비즈니스 프로세스 모델에 소프트웨어 프로덕트 라인 공학의 공통성과 가변성을 모델링 할 수 있는 비즈니스 프로세스 패밀리 모델을 제시하고 모델링 도구의 개발을 쉽게 접근할 수 있게 해주는 이클립스 플러그인 Graphical Modeling Framework(GMF)를 사용하여 비즈니스 프로세스 패밀리 모델링을 지원하는 도구를 설계하고 개발하는 과정을 보여준다 비즈니스 프로세스의 가변성은 UML2.0 활동도의 요소를 기반으로 표현된다.