• 제목/요약/키워드: Process behavior

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State Recognition and Prediction of a Batch Culture Using Fuzzy Rules

  • Fukuda, Tsunenobu
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • pp.1098-1101
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    • 1993
  • The purpose of this work is to build a fuzzy model of a batch culture for a process control. The process is highly nonlinear system with large delay. This paper presents two methods of modeling the process behavior. One is a method of recognizing them by fuzzy rules that are contracted by the pattern analysis in consideration of skilled operators' way. The other is a method of predicting them by approximate linear models and fuzzy rules by statistic analysis.

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Direct Growth of Graphene on Insulating Substrate by Laminated (Au/Ni) Catalyst Layer

  • Ko, Yong Hun;Kim, Yooseok;Jung, Daesung;Park, Seung Ho;Kim, Ji Sun;Shim, Jini;Yun, Hyeju;Song, Wooseok;Park, Chong-Yun
    • Applied Science and Convergence Technology
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    • v.24 no.4
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    • pp.117-124
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    • 2015
  • A direct growth method of graphene on insulating substrate without catalyst etching and transfer process was developed using Au/Ni/a-C catalyst system. During the growth process, behavior of the Au/Ni catalyst was investigated using EDX, XPS, SEM, and Raman spectroscopy. The Au/Ni catalyst layer was evaporated during growth process of graphene. The graphene film was composed mono-layer flakes. The transmittance of the graphene film was ~80.6%.

Use of Fashion Information Sources and Clothing Involvement of Middle and High School Girls (의복관여와 정보원 활용에 관한 연구 -여자 중.고교생을 중심으로-)

  • 전경숙
    • Journal of the Korean Society of Costume
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    • v.52 no.4
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    • pp.75-85
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    • 2002
  • The degree of involvement was known to shape the types of decision- process behavior of consumers. The types of information search would be influenced according to the degree of involvement. The purpose of this study was to find out the fashion information sources used in clothing purchase, and to clarify the interrelationship of clothing involvement and information sources. The middle and high school girls in Seoul were the subjects of the study. The information sources were classified into three types; marketer-oriented, internal and personal sources. Fashion informations spreaded by mass media were the most diversely used by teens. Among fashion information sources, ‘my own thoughts and experiences’ was counted as the most important one. And ‘interior and display of the shop’ was more important than the other marketer-oriented informations. Clothing involvement in the aspect of pleasure/symbol showed meaningful correlation with the information of ‘street fashion’, but in the aspect of fashion consciousness, ‘fashion of movie stars and celebrities’was the most significant information source. It seemed that ‘fashion articles in the magazines’ was used to reduce perceived risk in clothing purchase.

Process Behavior Modeling Using Deterministic Finite Automata (Deterministic Finite Automata를 이용한 프로세스 행위 모델링)

  • Lim, Young-Hwan;Wee, Kyu-Bum
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.923-926
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    • 2001
  • 침입 탐지 기법에 있어서 finite automata 를 통해 정상 행위를 프로파일링 하는 연구들이 많이 진행되어 왔으나, 자동으로 간결한 형태의 오토마타를 생성하는 것이 매우 어려웠다. 이 논문에서는 많은 침입 탐지 기법의 데이터 소스로 사용되고 있는 시스템 콜을 이용하여 자동으로 finite automata 를 생성하고, 여기에 언어 압축 알고리즘을 이용하여 오토마타를 압축하고 일반화 시킴으로써 다양한 프로세스의 행위들을 프로파일링 하도록 하였다. 제안된 알고리즘을 통해 모델링한 후 정상 행위와 비정상 행위를 가지고 실험을 한 결과 이들 사이에는 많은 수치적인 차이가 있음을 발견하였고, 이 결과를 바탕으로 침입을 탐지하는 것도 충분히 가능함을 알 수 있었다.

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A Case Study of Establishing a Quality Information System for a Small Sized Company (중소기업을 위한 품질정보시스템 구축 사례)

  • 최규필;박재홍;변재현;서기헌
    • Journal of the Korean Society for Quality Management
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    • v.29 no.1
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    • pp.128-139
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    • 2001
  • For small sized companies in Korea, it is crucial to have a systematic way of collecting and storing quality data, and extracting relevant information when necessary. This paper Is concerned with developing a quality information system which is mainly focused on processing quality inspection data, converting the data into meaningful quality information, and illustrating a case study of a small sized company in Gyeongnam province. First, we review the current quality Inspection system and reorganize a quality system which is more efficient than the current one. Second, incoming material, process, and product inspection modules are developed. Finally, a statistical process control module is integrated to see the manufacturing process behavior over time.

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Generation of Control Signals in High-Level Synthesis from SDL Specification

  • Kwak, Sang-Hoon;Kim, Eui-Seok;Lee, Dong-IK;Baek, Young-Seok;Park, In-Hak
    • Proceedings of the IEEK Conference
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    • pp.410-413
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    • 2000
  • This paper suggests a methodology in which control signals for high-level synthesis are generated from SDL specification. SDL is based on EFSM(Extended Finite State Machine) model. Data path and control part are partitioned into representing data operations in the from of scheduled data flow graph and process behavior of an SDL code in forms of an abstract FSM. Resource allocation is performed based on the suggested architecture model and local control signals to drive allocated functional blocks are incorporated into an abstract FSM extracted from an SDL process specification. Data path and global controller acquired through suggested methodology are combined into structural VHDL representation and correctness of behavior for final circuit is verified through waveform simulation.

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A Proposal of Agent based on Tagging and Process Behavior Inspection on the SmartPhone Environments (스마트폰 환경에서 Tagging 기반 프로세스 행위 감시 에이전트 제안)

  • Hong, Ji-Hoon;Kim, Nam-Uk;Chung, Tai-Myoung
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.434-437
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    • 2015
  • 스마트폰 사용자가 급격하게 증가함에 따라 BYOD(Bring Your Own Device)정책을 펼치는 회사들이 많아졌지만 스마트폰 악성코드로 인해 회사 네트워크 전체가 위험한 상황에 직면해있다. 현재 다양한 스마트폰 악성코드 탐지 기법들이 연구되고 있지만 대부분 단일 어플리케이션을 대상으로 탐지를 수행하고 네트워크 환경과는 독립적으로 탐지한다는 단점이 존재한다. 따라서 본 논문에서는 네트워크 환경을 고려한 Tagging 기반의 프로세스 행위 감시 에이전트를 제안한다.

Fuzzy Model Based Generalized Predictive Control for Nonlinear System (비선형 시스템을 위한 퍼지모델 기반 일반예측제어)

  • Lee, Chul-Heui;Seo, Seon-Hak
    • Proceedings of the KIEE Conference
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    • pp.697-699
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    • 2000
  • In this paper, an extension of model predictive controller for nonlinear process using Takagi-Sugeno(TS) fuzzy model is proposed Since the consequent parts of TS fuzzy model comprise linear equations of input and output variables. it is locally linear, and the Generalized Predictive Control(GPC) technique which has been developed to control Linear Time Invariant(LTI) plants, can be extended as a parallel distributed controller. Also fuzzy soft constraints are introduced to handle both equality and inequality constraints in a unified form. So the traditional constrained GPC can be transferred to a standard fuzzy optimization problem. The proposed method conciliates the advantages of the fuzzy modeling with the advantages of the constrained predictive control, and the degree of freedom is increased in specifying the desired process behavior.

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A Study on the Finite Element Analysis of Chip Formation in Machining (절삭가공시 집형성의 유한요소 해석에 관한 연구)

  • 김남용;박종권;이동주
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.973-976
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    • 1997
  • Process behavior in metal cutting results from the chip formation process which is not easily observable and measurable during machining. By means of the finite element method chip formation in orthogonal metal cutting is modeled. The reciprocal interaction between mechanical and thermal loads is taken into consideration by involving the thermo-viscoplastic flow behavior of workpiece material. Local and temporal distributions of stress and temperature in the cutting zone are calculated depending on the cutting parameters. The calculated cutting forces and temperatures are compared with the experimental results obtarned from orthogonal cutting of steel AISl 4140. The model can be applied in process design for selection of appropriate tool-workpiece combination and optimum cutting conditions in term of mechanical and thermal loads.

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