• 제목/요약/키워드: formal analysis

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System Modeling and Simulation Study for the Analysis of Flow Lines (Flow Line 분석을 위한 시스템 모델링 및 시뮬레이션 연구 - 타이어 공장의 사상라인을 중심으로 -)

  • Choi, Byung-Kyu;Park, Jeong-Hyeon;Hwang, Moon-Ho;Kim, Jae-Hie
    • IE interfaces
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    • v.4 no.1
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    • pp.71-81
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    • 1991
  • Presented in this paper is a systematic approach to "modeling and simulation' of flow lines in mass production systems, using a tire trimming line as an example. The "modeling phase" consists of 1) generation of alternative line configurations, 2) construction of a reference model for each alternative, and 3) formal description of the target system. ACD(Activity Cycle Diagrams) are employed as a tool for formal description. In the "simulation phase'. block diagram models (provided by the simulation language SIMAN) and the next event methodology(implemented in FORTRAN 77) are combined in order to fully describe the flow line behavior.

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Process Algebra for Multiple Shared Resources (다중 공유 자원을 위한 프로세스 대수)

  • Yoo, Hee-Jun;Lee, Ki-Huen;Choi, Jin-Young
    • Journal of KIISE:Computer Systems and Theory
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    • v.27 no.3
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    • pp.337-344
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    • 2000
  • In this paper, we define a Process Algebra ACSMR(Algebra of Communicating Shared Multiple Resources) for system specification and verification using multiple resources. ACSMR extends a concept of multiple resources in ACSR that is a branch of formal methods based on process algebra. We'll show that two specification and verification examples. One is the specification of system behavior in multiprocessor using EDF(Earliest-Deadline-First) which is a scheduling algorithm of a real-time system. The other is the specification of describing timing analysis and resources restriction in a super scalar processor using multiple ports registers.

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ESTIM : A Support System for Task-based Evaluation of User Interface (ESTIM : 사용자 직무지식에 기반한 인터페이스 평가 지원시스템)

  • Ryu, Ho-Gyeong;Yun, Wan-Cheol
    • Journal of the Ergonomics Society of Korea
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    • v.18 no.3
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    • pp.55-72
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    • 1999
  • Evaluation of user interfaces has to be performed in an intuitive and subjective manner by experts especially when the problem comes to the complexity and consistency of sophisticated interface procedures. The manual analysis and evaluation of logical interfaces also tends to be slow and laborious. To make the evaluation more formal and objective, the criteria and the procedure with which the evaluation can proceed must be explicitly prescribed. Furthermore, to make the formal procedure as practical as subjective expert evaluation, the criteria must reflect the user knowledge of the target tasks since the task knowledge plays the role of a basis for users to understand the interface organizations and procedures. This paper describes ESTIM, a support system for task-based evaluation of user interface, that includes the interface evaluation criteria and implies an evaluation procedure. The support system can be used either in an interactive manner by the analyst during the evaluation or in an automatic evaluation mode. It was verified that the result of automatic evaluation by ESTIM matched the results of expert evaluation fairly well.

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Analysis of the Characteristics, Strengths, and Weaknesses of Innovation Diffusion Type in Rural Area (혁신전파 유형별 특징 및 강약점 분석)

  • Choi, Sang-Ho;Lee, Seong-Woo
    • Journal of Agricultural Extension & Community Development
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    • v.16 no.1
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    • pp.201-235
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    • 2009
  • This study analyzed the demographic characteristics, strengths and weaknesses related to information acquisition of local innovation diffusion types. This study use ordered probit model to find strengths and weaknesses of innovation diffusion type in rural area. The individual characteristics of 'formal extension type', 'situational reaction diffusion type', 'agriculturist connection type', and 'systematic approach type', all differentiated according to innovation diffusion type, were analyzed. Following Choi & Choe(2008), immediacy, accessibility, referability, applicability, and satisfaction were the highest in the situational reaction diffusion type, systematic approach type, formal extension type, and farmers connection type, in the order. And there existed organic contexts among individual characteristics. So this study tried to analyze strengths and weaknesses of innovation diffusion type with a focus on immediacy, which emerged as the most important variable in the process of interpreting innovation diffusion. And the strengths and weaknesses of each innovation diffusion type were presented.

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Formal Specification & Analysis models for Cryptographic protocol (암호 프로토콜의 정형적 사양 및 분석 기법)

  • 이진석;신기수;이강수
    • Review of KIISC
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    • v.5 no.1
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    • pp.25-46
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    • 1995
  • 소프트웨어 개발에서, 사용자 요구 사항을 잘 표현하면 할수록 시스템은 오류가 적고, 사용자가 요구하는 시스템으로 만들어지며, 시스템 검증이 쉬워지는 것 같이, 정형적 사양(formal specification)은 시스템 개발 전반에 영향을 준다. 이 정형적 사양은 암호 프로토콜이 완전(completeness)하고 안전(soundness)한가를 검증하는 데에도 유용하게 사용될 수 있다. 암호 프로토콜을 사양하고 분석하는 방법은 크게 대수적, 논리적, 상태 변환적 접근 방법등과 통신 프로토콜의 검증에 쓰는 패트리넷을 이용한 방법등이 있다. 이들 방법중에는 프로그램으로 구현되어 자동 검증 tool로 개발된 사례도 있다. 본 고에서는 암호 프로토콜을 위한 사양 기법과 그에 따른 분석 기법을 알아보고 그것들을 비교, 분석하였다.

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A STUDY ON THE FORMAL DEVELOPMENT OF KOREAN POLICEMAN'S HEADGEAR (한국경찰모자의 형태개발에 관한연구)

  • 강병석
    • Journal of the Korean Society of Costume
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    • v.27
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    • pp.173-188
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    • 1996
  • The purpose of this study is to present the form of Korean policeman's headgear which is endowed with traditional Korean characters and a creative property that has distinctive from other headgears. The investigation was carried out through the researh of policeman's headgears in foreign countries such as United Kingdom France Belgium Italy germany and Japan. The dom-estic investigation was carried out through the Focused Group Interview and analysis on the domestic policeman's service and headgear. Lastly the research into the characteristic of Korean traditional headgear's from was carried out. Consequently two types of policeman's head-gear hat and cap were newly developed and the system of practical use was suggested. The results of this study were as follows: 1. Through the use of traditional and formal elements of Korean ancient headgears korean policeman's headgears were improved in distinc-tion and dignity. 2. Through the use of unisexual form police-man's headgears were improved in uniformity. 3. Through the use of transformal accessories policeman's headgear were improved in simplified system. 4. Through the use of newly formed and lighten weighted materials policeman's head-gears were improved in functionability.

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The Application of MultiLayered Primitive-Composite Model for Integrated Design System of Agricultural Facilities (농업시설물의 통합설계시스템 개발을 위한 객체 모델링에 관한 연구(구조 및 재료 \circled1))

  • 배연정;이정재;윤성수;김한중
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2000.10a
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    • pp.226-232
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    • 2000
  • The design of agricultural facilities is the consistent activities, which systematically analyze all the actual conditions, design the unit structures, and improve the faming environment through efficient organization of the unit facility. The design of agricultural facilities is composed of site study, preliminary design, primary design, and detail design. Integrated design system can manage and process the information created by and used in all steps of design process. Formal data models of these design activities are important conceptual steps in development of integrated design system. However, most of existing models are not available for agricultural facilities. To support efficiently developing the integrated design system of agricultural facilities, we have developed the Multi-Layered Primitive-Composite mode I through object-oriented analysis of agricultural facilities. The MPC model not only satisfies the characteristics of agricultural facility, such as variety, coupling, informal data, but also improves abilities of integrated design system such as extensibility, flexibility, and granularity. The paper presents a formal definition of the MPC model.

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A Study of Institutional Theory and Korean FDI (진출국 제도와 해외직접투자 선택에 관한 연구)

  • Lee, Eungo-Sok
    • Asia-Pacific Journal of Business
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    • v.9 no.1
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    • pp.107-121
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    • 2018
  • The purpose of this paper is to explore the determining factors of foreign direct investment(FDI) of Korea by using institutioanl theory. In addition, this study divides institutional facts into the formal and the informal institutions. The empirical test implements multiful regression analysis focuing on korean electronics and automotive industry. The dependent variables are FDI outflow and the independent ones are corruption, econimic freedom, political risk, human development, and culturan distance. According to the empirical results, corruptin and human development have positive effects on Korean FDI outflow. On the other hand, political risks and economic freedom have negative effects on Korean FDI outflow. This results indicate the importance of forman and informal institutional facotrs as determinants of Korean FDI outflow.

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A Study on the Benefit Segmentation of Womens' Formal Suit in Checheon (여성 정장류 소비자의 혜택 세분화에 대한 연구 -제천시 주부들을 중심으로-)

  • 임경복
    • The Research Journal of the Costume Culture
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    • v.6 no.3
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    • pp.34-45
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    • 1998
  • The purposes of this study were 1) to segment the female formal suit market based on clothing benefits sought by housewives in Checheon 2) to compare the real and ideal self-image's relative power on the clothing benefits factor, and 3) to develop a profile of each segment concerning self-image (real and ideal), and demographics. The data wer collected via a questionnaire from housewives. Using factor and cluster analysis, four groups were identified and labeled as 1) Easy care oriented users 2) Aesthetics/fashion oriented users 3) Low benefit oriented users. ANOVA, Duncan's Multiple Range Test, Chi-square statistics revealed significant differences among the three groups according to clothing benefits, real and ideal self-image and demographic variables.

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O Valor Documental dos Balangandãs: Uma Análise Simbólica e Formal

  • Carmo, Sura Souza;Borges, Luiz C.
    • Iberoamérica
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    • v.23 no.1
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    • pp.79-111
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    • 2021
  • The purpose of this article is to present the potential of balangandãs as a documentary source for intersectional studies of gender and slavery, from the analysis of formal and symbolic aspects of the museum objects in the Museu Nacional Nacional (MHN) and Museu Carlos Costa Pinto (MCCP). Balangandãs are a type of creole jewelry, made in gold or silver and used in Brazil since the 18th century by black women - women who worked, especially in the commercialization of foodstuffs in large urban centers. They are described in printed sources and engravings, and preserved in some museum institutions. In the study, the meanings attributed to the object over the centuries are observed: jewelry, amulet, peculium, document, travel memory and heritage. As a result, the article seeks to highlight the objects as a historical and documentary source, verifying similarities between the pieces musealized at the MHN and at the MCCP, also emphasizing the documental power of the pieces produced today.