• Title/Summary/Keyword: design methodologies

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A Modeling of Automated Hull Curved Plates Forming System using SysML (SysML 을 이용한 선체 곡판가공 자동화 시스템 모델링)

  • Noh, Jackyou;Shin, Jong Gye
    • Journal of the Korean Society of Systems Engineering
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    • v.4 no.2
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    • pp.1-13
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    • 2008
  • The development of hull curved plate forming automation system in ship production field begins from the need of stakeholders such as enterprise organization, who need the reduction of cost and time and improvement of productivity, and end users who work for this production process. Even though hull curved plate forming automation system has small scale, it is reasonable to consider the system as an interdisciplinary system, because the system includes all of hardware, software, human and information and has a specified objective to be performed. In this paper, introduction of 4 leading Model-Based Systems Engineering (MBSE)methodologies is described and SysML(Systems Modeling Language), which is designed to analyze, specify, design, and verify complex systems, is introduced in order to support those methodologies. Especially, SysML is applied to system modeling of hull curved plate forming automation system and focused on. The structure diagrams and behavior diagrams based on operational context of the automation system are used to make system architecture. The performed application of SysML to the hull curved plate forming automation system shows an example of applying SysML to the development of other autonomous systems in ship production domain.

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(Design and Implementation of a Web-Based Tool for Information Security Levelling with Multiple Weights) (다중 가중치를 적용한 웹 기반 정보보호수준 측정 도구 설계 및 구현)

  • Sung, Kyung;Choi, Sang-Yong;So, Woo-Young;Kim, Sung-Ok
    • Journal of the Korea Computer Industry Society
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    • v.3 no.9
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    • pp.1315-1328
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    • 2002
  • Recently there has been increasing demand on developing methodologies and tools for measuring the information security level of organizations for the efficient security management, as the growth of security incidents. However, most methodologies from foreign countries are not realistic in constructing the checklists, moreover their tools provide neither the ease of use nor the inexpensiveness, and most domestic works are not properly considering the characteristics of the organizations. In this study, based on the recently developed standard for information security management, an information security levelling tool is designed and implemented which can be used before building an information security management system while considering the characteristics of organizations more efficiently. The efficiency comes from applying multiple variable weights for security levelling according to the characteristics of organizations.

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Development of a Usability Checklist for Mobile PhoneUser Interface Developers (휴대폰 UI 개발자를 위한 사용편의성 체크리스트의 개발)

  • Park, Jun Ho;Yun, Myung Hwan
    • Journal of Korean Institute of Industrial Engineers
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    • v.32 no.2
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    • pp.111-119
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    • 2006
  • In the last decade, the research of the usability of mobile phones has been a newly evolving area with few established methodologies and realistic practices that ensure capturing usability in evaluation. Thus, there exists a growing demand to explore appropriate evaluation methodologies that evaluate the usability of mobile phones quickly as well as comprehensively. This study aims to develop a task-based usability checklist based on heuristic evaluation in views of mobile phone UI practitioners. A hierarchical structure of UI design elements and usability principles related to mobile phones were developed and then utilized to develop the checklist. In order to demonstrate the practical effectiveness of the proposed checklist, comparative experiments were conducted on the usability checklist and usability testing. A majority of usability problems found by usability testing and additional problems were discovered by the proposed checklist. It is expected that the usability checklist proposed in this study could be used quickly and efficiently by usability practitioners to evaluate the mobile phone UI in the middle of the mobile phone development process.

The Approach for ERP Courses into University Curriculum (대학 교과과정에서의 ERP교육 방안)

  • Yoon, Cheol-Ho;Kim, Sang-Hoon
    • Journal of Information Technology Services
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    • v.3 no.2
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    • pp.39-51
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    • 2004
  • Based on investigating and analyzing the cases of advanced foreign universities that have already included ERP courses in their education systems, this study proposed the ways of incorporating ERP courses into Korean universities' curriculums in terms of the following three areas: 1) development of ERP courses, 2) establishment and maintenance of ERP education environment, 3) continuous evaluation and improvement of ERP education implementation. As reasonable ERP courses, "Introduction to ERP" targeted to educating overall basic concepts in ERP system and business administration, "ERP System Implementation" for fostering business process design and system implementation skills, "ERP Programming" such as ABAP for the purpose of customizing ERP system, and "Strategic Use of ERP" dealing with ERP package selection and implementation methodologies of effective utilization of ERP systems were suggested. Regarding the establishment and maintenance of ERP education environment, single server architecture model that contained both database and application was proposed with the intention of set-up cost saving and maintenance efficiency. As for the evaluation and improvement on ERP education implementation, its methodologies were introduced through analyzing the advanced cases. Finally in addition to the above three areas, critical success factors for effectively launching ERP education in the universities were suggested through reviewing the previous case studies.

A Study of High-Power Dissipation Parts Modeling for Spacecraft PCB Thermal Analysis (위성 PCB 열해석을 위한 고 전력소산 소자의 모델링 연구)

  • 이미현;장영근;김동운
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.34 no.6
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    • pp.42-50
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    • 2006
  • This paper addresses the optimized thermal modeling methodology for spacecraft board level thermal analysis. A direct thermal modeling of external and internal structure of active parts which have high power dissipation is newly proposed, based on conventional plate modeling for Printed Circuit Board(PCB). The parts thermal modeling results were compared with other generic methodologies and verified by thermal vacuum test. This parts thermal modeling was directly applied to thermal analysis of CS(Communication Subsystem) board of HAUSAT-2 small satellite. As a result, it was confirmed that the parts thermal modeling can complement other conventional modeling methodologies. A parts thermal modeling is very effective for thermal control design, since the existing thermal problems can be solved at the parts level in advance.

Enhancing Immersiveness in Video see-through HMD based Immersive Model Realization (Video see-through HMD 기반 실감 모델 재현시의 몰입감 향상 방법론)

  • Ha, Tae-Jin;Kim, Yeong-Mi;Ryu, Je-Ha;Woo, Woon-Tack
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.685-686
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    • 2006
  • Recently, various AR-based product design methodologies have been introduced. In this paper, we propose technologies for enhancing robust augmentation and immersive realization of virtual objects. A robust augmentation technology is developed for various lighting conditions and a partial solution is proposed for the hand occlusion problem that occurs when the virtual objects overlay the user' hands. It provides more immersive or natural images to the users. Finally, vibratory haptic cues by page motors as well as button clicking force feedback by modulating pneumatic pressures are proposed while interacting with virtual widgets. Also our system reduces gabs between modeling spaces and user spaces. An immersive game-phone model is selected to demonstrate that the users can control the direction of the car in the racing game by tilting a tangible object with the proposed augmented haptic and robust non-occluded visual feedback. The proposed methodologies will be contributed to the immersive realization of the conventional AR system.

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Study on Clinical Research Methodologies for Acupuncture: Based on Review of Clinical Studies on Back Pain (침 임상연구방법론 연구: 요통 임상연구 사례를 중심으로)

  • Park, Yu Lee
    • Korean Journal of Acupuncture
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    • v.31 no.4
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    • pp.158-167
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    • 2014
  • Objectives : The results from randomized controlled trials on traditional medicine have been negative or ambiguous. The appropriateness of the research methodology started to be questioned. However, the research methodology appropriate for studying traditional medicine has not been well-established. This study aims to explore the appropriate research methodologies for clinical studies on acupuncture. Methods : Clinical researches evaluating the efficacy and effectiveness of acupuncture for back pain were systematically searched and evaluated focusing on research methodology. The acupuncture treatment protocol is evaluated by 9 items which is individual treatment based on diagnosis, combining proximal and distal acupoints, exact location of acupoint, De Qi, adequate stimulation, duration of acupuncture, treatment sessions, treatment interval, and establishing relationship between patients and doctors. Results : Systematic review of acupuncture researches on low back pain suggested that observational studies and pragmatic trials rather than explanatory studies could incorporate these elements. Qualitative studies also could help understanding complex characteristics of acupuncture treatment which could not be evaluated by quantitative studies. Conclusions : In designing clinical researches on acupuncture, various study designs, especially observational study and pragmatic study, should be considered according to research objectives and subjects. The efforts to incorporate the core characteristics of acupuncture practiced in everyday clinical setting are also essential.

Three-dimensional Crush Measurement Methodologies Using Two-dimensional Data (2차원 데이터를 활용한 3차원 충돌 변형 측정 방법)

  • Han, Inhwan;Kang, Heejin;Park, Jong-Chan;Ha, Yongmin
    • Transactions of the Korean Society of Automotive Engineers
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    • v.23 no.3
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    • pp.254-262
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    • 2015
  • This paper presents 3D collision deformation modelling methodologies using photogrammetry for reconstruction of vehicle accidents. A vehicle's deformation shape in collision provides important information on how the vehicle collided. So effective measurement(scanning) and construction of a corresponding appropriate model are essential in the analysis of collision deformation shape for obtaining much information related to collision accident. Two measurement methods were used in this study: Indirect-photogrammetry which requires relatively small amount of photos or videos, and direct-photogrammetry which requires large amount of photos directly taken for the purpose of 3D modelling. When the indirect-photogrammetry method, which was mainly used in this study, lacked enough photographic information, already secured 2D numerical deformation data was used as a compensation. This made 3D collision deformation modelling for accident reconstruction analysis possible.

Risk Management and Assessment Methodology in System Design (위험관리 프로세서와 평가의 새로운 접근)

  • 조희근;박영원
    • Journal of the Korea Institute of Military Science and Technology
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    • v.2 no.2
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    • pp.197-208
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    • 1999
  • Recently, risk management is a very important issue in many industrial applications. This paper describes a general structure for risk management and suggests a new risk assessment methodology. In risk management applications of financial or insurance industries, there are many methodologies developed for practical use. However, areas for improvement exist to facilitate the application of the methods. Two major risk assessment methodologies have been developed and widely applied in system engineering. One is in its original development application from aerospace and defense industry, and the other was developed in applied software engineering. In a large and complicated system development application, an effective risk management can reduce total development cost as well as uncertainty in achieving project goals of schedule and performance.

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Simulation Function of Railway Station Project by Virtual Construction Technology (가상건설기법에 의한 철도역사 시설물 시공시뮬레이션 기능 구축)

  • Kang, Leen-Seok;Moon, Jin-Seok;Kwon, Jung-Hee
    • Journal of the Korean Society for Railway
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    • v.11 no.5
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    • pp.433-440
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    • 2008
  • Virtual construction methodology enables to construct project facility from design phase to construction phase in 3D virtual environment. It is a technique that can solve problems of construction in virtual construction process. This study suggests some methodologies of virtual construction and developed a system for a railway station in Honam express railway project based on suggested methodologies. This study developed layout review and layer simulation functions. Those functions can improve the effectiveness of 3D simulation and the virtual construction system can be used as a verification tool for construction process of various construction projects.