• 제목/요약/키워드: Process

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프로세스 마이닝과 리엔지니어링을 위한 제어경로 기반 프로세스 그룹 발견 프레임워크와 실험적 검증 (Control-Path Driven Process-Group Discovery Framework and its Experimental Validation for Process Mining and Reengineering)

  • 응웬 탄 하이;김광훈
    • 인터넷정보학회논문지
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    • 제24권5호
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    • pp.51-66
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    • 2023
  • 본 논문에서는 비즈니스 프로세스 모델의 생명주기관리를 지원하는 대표적인 지식발견기술인 프로세스 마이닝과 지식개선기술인 프로세스 리엔지니어링 접근방법을 기반으로 하는 새로운 유형의 프로세스 발견 프레임워크를 제안한다. 또한, 제안된 프레임워크를 기반으로 하는 프로세스 마이닝 시스템을 개발하고, 이를 통한 실험적 검증을 수행한다. 실험적 효과검증에 적용된 프로세스 실행 이벤트 로그를 특별히 프로세스 빅-로그(Process BIG-Logs)라고 정의하고, 분산 비즈니스 프로세스 관리 시스템의 로깅메커니즘과 연계된 조각-실행로그이력들을 클러스터링하는 전처리과정을 거친 마이닝의 입력데이터세트로 활용한다. 결과적으로, 본 논문에서는 구조적 정보제어넷기반 프로세스 마이닝 알고리즘인 ρ-알고리즘을 개선한 제어경로기반 프로세스 그룹 발견 알고리즘과 프레임워크를 설계 및 구현하고, 구현된 시스템을 이용하여 제안한 알고리즘과 프레임워크의 정확성을 실험적으로 검증한다.

다중이상원인하의 경제적 품질비용 정책결정 (Determination of Quality Cost Policy under Multiple Assignable Causes)

  • 김계완;김용필;박지연;윤덕균
    • 산업경영시스템학회지
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    • 제26권1호
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    • pp.7-16
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    • 2003
  • At present, company has to produce a product that consumer like with a competitive price, a good quality, and a fitting time to supply. Process control and quality control are very important to supply with a product uniformly and inexpensively. Process control is given much weight in the quality control in manufacturing system. Statistical process controls(SPC) that are used in process generally have major impact on manufacturing, product design activities, and process development potentially. Control charts in statistical process control method can be interpreted the data from quality characteristics in production process and discriminated between chance variation and assignable variation in process. In addition, control chart can be used to monitor the process output and detect when changes in the inputs are required to bring the process back to an in-control state. The models that relate the influential inputs to process outputs help determine the nature and magnitude of the adjustments required. In this paper, the characteristic of product quality is monitored by control chart during the machining process and construction of quality control cycle is considered to divide into two types in this case that different assignable causes lead to shifts having different magnitudes. Then we are intended to find a process shift magnitude which has economical quality cost policy and are considered to quality cost functions to find a process shift magnitude. Those costs are categorized into the well-known categories of prevention, appraisal, and internal failure and external failure. This paper ends with numerical examples that demonstrate the usefulness of the model.

정수처리에서 생물활성탄의 전처리로서 고급산화처리법의 평가 (Evaluation of Advanced Oxidation Process(AOP) as a Pretreatment Process of Biological Activated Carbon in Drinking Water Treatment)

  • 김우항
    • 한국환경과학회지
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    • 제8권6호
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    • pp.725-730
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    • 1999
  • The advanced oxidation process (AOP) using ozone combined with hydrogen peroxide and ultraviolet treatment were evaluated for biodegradable dissolved organic carbon (EDOC) formation and dissolved organic carbon (DOC) removal. Oxidation treatment were conducted alone or combination with ozone, hydrogen peroxide and ultraviolet processes. Ozone dosage of ozone process was varied from $0.5mg/l{\ell}\cdot}min$ to $5mg/{\ell}{\cdot}min$. Ozone/hydrogen peroxide process was done using $20mg/{\ell}{\cdot}min$ of hydrogen peroxide concentration. Ozone/ultraviolet process was irradiated with $12mW/cm^2$ of density and 254nm. Ozone dosage was varied from $0.5mg/{\ell}{\cdot}min$ to $5mg/{\ell}{\cdot}min$ at the ozone/hydrogen peroxide and ozone/ultraviolet processes too. Contact time of all the process was 20 minutes. Oxidation treatment were performed on microfiltration effluent samples. BDOC formation was reached to an optimum at ozone dosage of $1.5mg/{\ell}{\cdot}min$ in the ozone/hydrogen peroxide process and $1mg/{\ell}{\cdot}min$ in ozone/ultraviolet process, after which BDOC formation was decreased at higher ozone dosages. But BDOC formation was increased with ozone dosages increasing in ozone process. The efficiency of DOC removal was higher AOPs than ozone process. Ozone/ultraviolet proces was the highest for DOC removal efficiency in each process. THMFP. removal efficiency by ozone/ultraviolet process was higher than that by each of ozone process and ozone/hydrogen peroxide process.

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스마트 팩토리의 제조 프로세스 마이닝에 관한 실증 연구 (An Empirical Study on Manufacturing Process Mining of Smart Factory)

  • 김태성
    • 대한안전경영과학회지
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    • 제24권4호
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    • pp.149-156
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    • 2022
  • Manufacturing process mining performs various data analyzes of performance on event logs that record production. That is, it analyzes the event log data accumulated in the information system and extracts useful information necessary for business execution. Process data analysis by process mining analyzes actual data extracted from manufacturing execution systems (MES) to enable accurate manufacturing process analysis. In order to continuously manage and improve manufacturing and manufacturing processes, there is a need to structure, monitor and analyze the processes, but there is a lack of suitable technology to use. The purpose of this research is to propose a manufacturing process analysis method using process mining and to establish a manufacturing process mining system by analyzing empirical data. In this research, the manufacturing process was analyzed by process mining technology using transaction data extracted from MES. A relationship model of the manufacturing process and equipment was derived, and various performance analyzes were performed on the derived process model from the viewpoint of work, equipment, and time. The results of this analysis are highly effective in shortening process lead times (bottleneck analysis, time analysis), improving productivity (throughput analysis), and reducing costs (equipment analysis).

동시적 업무수행을 위한 통합된 시스템 설계 프로세스 연구 (Research of Integrated System Design Process for Concurrency Design Activity)

  • 김진훈;박영원
    • 품질경영학회지
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    • 제32권3호
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    • pp.141-152
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    • 2004
  • This study describes process and method to establish concurrent and/or sequential schedule planning for the system design process of the EIA632 standard. For this purpose, the study suggest Process and method that are context analysis of standard process, interface definition from activity decomposition, integration of related activities, and definition of concurrent and/or sequential work flow. The proposed process and method will contribute to minimize time loss that is emerged from activities iteration.

A New Process Capability Measure for Non-normal Process

  • Jun, Mi-Jung;Cho, Gyo-Young
    • Journal of the Korean Data and Information Science Society
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    • 제18권4호
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    • pp.869-878
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    • 2007
  • In this paper a new process capability index $C_{psks}$ is introduced for non-normal process. $C_{psks}$ that is proposed by transformation of the $C_{psks}$ incorporates an additional skewness correction factor in the denominator of $C_{psks}$. The use of each technique is illustrated by reference to a distribution system which includes the Pearson and Johnson functions. Accordingly, $C_{psks}$ is proposed as the process capability measure for non-normal process.

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A New Process Incapability Measure for Non-normal Process

  • Jun, Mi-Jung;Cho, Gyo-Young
    • Journal of the Korean Data and Information Science Society
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    • 제18권4호
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    • pp.937-943
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    • 2007
  • In this paper a new process incapability index $C^*_{psks}$ is introduced for non-normal process. $C^*_{psks}$ is proposed by transformation of the $C^*_{psks}$. The use of each technique is illustrated by reference to a distribution system which includes the Pearson and Johnson functions. Accordingly, $C^*_{psks}$ is proposed as the process capability measures for non-normal process.

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동정 네트 모델에 의한 공정 계획과 일정 계획의 통합 (A Process-net based System for the Integration of Process Planning and Operation Scheduling)

  • 박지형;강민형;노형민
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1997년도 춘계학술대회 논문집
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    • pp.445-449
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    • 1997
  • In order to provide a manufacturing system with efficiency and flexibility to cope with the changes in shop floor status, the integration of process planning and operations scheduling is required. In this paper,an integrated system of process planning and operations scheduling based on the concept of process net model is presented. The process net model includes the alternative process plans. The integrated system is applied for prismatic parts.

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검사/계측시스템의 능력분석을 포함한 비공정능력지수의 개발과 적용 (Development and Application of Process Incapability Index including Capability Analysis of Inspection or Gage System)

  • 민성진;김계완;류정현;윤덕균
    • 품질경영학회지
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    • 제30권1호
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    • pp.118-132
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    • 2002
  • This paper presents a process incapability index to provide manager with various information of process and to reduce cost. The introduced process incapability indices indicate information about mean and variance of manufacturing process and variance of inspection process to evaluate process capability using ratio of variance and difference between target and mean to specification. This model can be used by the scale of six sigma management.

A Technique and software of analysis and control for measurement process

  • Zhao, Fengyu;Xu, Jichao;Bergman, Bo
    • International Journal of Quality Innovation
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    • 제1권1호
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    • pp.97-105
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    • 2000
  • In this paper, a two-section method for measuring is introduced and the variation sources of measurement process are analysed. Measuring is a special process in general process. Various variation source must be firstly decomposed so that the statistical distribution law of measuring process can be established, and then implement monitoring control of the measuring process. A special method to obtain the measuring variation is discussed, and a monitoring control technique for measuring process is studied based statistical distribution. Towards the end, we briefly introduce software design for the analysis and control of a measurement process.

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