• Title/Summary/Keyword: Arena

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Performance Analysis of LCD Cell Manufacturing System using ARENA Simulation (ARENA Simulation을 이용한 LCD Cell 공정 수행도 분석)

  • Yang, Hyun-Suk;Jeon, Tae-Bo
    • Journal of Industrial Technology
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    • v.31 no.B
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    • pp.59-65
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    • 2011
  • In this study, LCD Cell process has been analyzed through ARENA simulation. The major concern is to find the condition maximizing production rate (or quantity per hour). For the analysis, we have selected 4 factors and performed simulation experiments through $L_8(2^7)$ orthogonal arrays. Our results indicate that the production may be maximized with well selected conditions proposed in this study. The results obtained from this study may provide a good base for practical applications.

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A Study on Computation of Optimal Basic Load of Rifle and Firearm Using Arena (ARENA를 이용한 최적 기본 휴대량 산정에 관한 연구)

  • Park, Ji-Won;Lee, Jae-Yeong;Park, Jung-Kap
    • Journal of the military operations research society of Korea
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    • v.34 no.2
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    • pp.1-26
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    • 2008
  • This study presents a new estimation of optimal amount of B/L for infantry rifles and artillery weapons which are currently using in Korean Army. To do that, we analyzed current concept of B/L and methodologies used to compute B/L before, and re-calculate optimal amount of B/L to solve some problems founded. We also applied ARENA simulation model to propose estimated values of optimal B/L. The proposed optimal B/L will certainly help to improve efficiency for wartime readiness in the future.

A Study on the Automated Generation of Arena Simulation Models Using Conceptual Models (개념 모델을 이용한 Arena 시뮬레이션 모델 자동 생성에 관한 연구)

  • Ra, Hyun-Woo;Choi, Seong-Hoon
    • Journal of the Korea Society for Simulation
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    • v.23 no.4
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    • pp.21-29
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    • 2014
  • In general, a simulation project requires much time and money since we should develop a model that works similarly to the system at a level consistent with the project purposes. Therefore, more active research studies are required to reduce the time needed for the modeling process. This is achievable by minimizing the possible trial and error during the model development process through the appropriate conceptual model design and the automated generation of the simulation model. This paper presents a tool automatically generating an Arena model after developing a conceptual simulation model. Because our proposed tool is based on the popular Microsoft Excel and Visio, it is expected to be practically used at many industrial sites. Finally, we showed the effectiveness of the newly suggested tool by applying it to an imaginary simulation project.

Study on Development for Plan Model of Tunnel construction by using Arena;on focused NATM (ARENA를 활용한 터널공사계획모델 개발에 관한 연구;NATM공법을 대상으로)

  • Lee, Si-Wook;Kim, Ok-Ki;Woo, Sung-Kwon
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.872-875
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    • 2007
  • Estimation of total construction period and cost in the early stage of the project is very important. Simulation is one of the method considering proper compound such as tools, materials for effective construction management and estimating and analysing affected factors to construction through making suitable process. This study is to develop the model by using Arena simulation considering limited facts like blast time in a subway tunnel construction of both sides inner city. Developed model is easily useful type by using Visual Basic program, and can obtain total construction period and cost as a result. It could be used as a decision making tool in early stage of the construction.

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Performance Analysis of Auto Body Manufacturing System using ARENA Simulation (ARENA 시뮬레이션을 이용한 차제공장 수행도 분석)

  • Jung, Jae-Ho;Kim, Hyun-Gun;Kim, Hyang-He;Jeon, Tae-Bo
    • Journal of Industrial Technology
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    • v.20 no.A
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    • pp.229-238
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    • 2000
  • Simulation analysis for an auto body manufacturing system has been performed in this study. The major goal is to figure out the condition yielding the production rate, 70 per hour. It is, however, very difficult to maintain this rate due to inherent system factors such as machine failure rates, machine repair rates, number of carriers between manufacturing lines(shops), carrier speed etc. We first carefully examined the system and developed a simulation model using ARENA. We then applied statistical experimental design concepts for performance analysis. Our results indicate that the buffer size of 30 and quick repair of failed robots are required for the desired production rate. Other factors, on the other hand, are seen to have minor effects on the throughput. The approach taken in this study and the results obtained may provide a practical guideline for performance analysis and thus be applied without trepidation for similar cases.

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Analysing Optimum Tugboat Capacity in Ulsan Port by Simulation Technique (시뮬레이션 기법을 활용한 울산항의 적정 예선 척수 분석)

  • Park, Jun-Mo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.26 no.5
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    • pp.445-453
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    • 2020
  • The use of tugboats for the safe berthing/unberthing of ships is the most crucial factor in the safe and efficient operation of the harbor. However, the adequate number and size of tugboats that should be held based on the characteristics of the port have not been investigated in detail, which causes disputes between involved parties. Therefore, the suitable number of tugboats and the ratio of the tugboat horsepower were determined in this study using simulation techniques, with focus on Ulsan Port. First, the ship and tugboat-operating models were designed for simulation application. Next, the input variables defined in the model design were standardized in an inputtable form using ARENA software. In addition, the arrival and division process of the ship was designed and simulated as an ARENA model. Finally, the simulation results for six scenarios showed that an effective tugboat operation could be achieved when 42 tugboats were held at Ulsan Port.

Study on the Productivity Improvement of Diagnostic Medical Blood Analyzers using Theory of Constraints and Simulation (제약이론과 시뮬레이션을 이용한 진단 의료 혈액분석기의 생산성 향상 방안 연구)

  • Maeng, Ju-Hyuck;Lee, Kang-Won
    • Journal of the Korea Society for Simulation
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    • v.22 no.2
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    • pp.21-31
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    • 2013
  • There is a high demand for the diagnostic medical blood analyzer in the global medical device market. The domestic market is in infant stage, but expected to grow very fast. In this study, we attempt to provide several ways for production improvement in order to secure price competitiveness of domestic medical blood analyzer. For this purpose we identify the problems of current production process using ARENA simulation and suggest several alternatives for productivity improvement.. Five steps of TOC (Theory of Constraints) and ARENA simulation are employed to predict productivity of each alternative and to suggest further improvement.

How High School Mathematics Teachers Use New Textbook : A Case Study from China

  • Zhuo Li;Jiansheng Bao
    • Research in Mathematical Education
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    • v.26 no.4
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    • pp.291-310
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    • 2023
  • In this paper, we propose a theoretical framework for Chinese high school mathematics teachers use new textbooks based on the work of Remillard (1999) and Chau (2014). Based on this framework, a multiple case approach was used to investigate how two high school mathematics teachers from Shanghai use new textbooks. The results suggest that in the curriculum mapping arena, both the novice teacher and the expert teacher often planned to appropriate the unit content, and sometimes planned to add supplemental content. When organizing the unit content, novice teacher always planned to follow the new textbook in sequence, while expert teacher often would follow the new textbook in sequence, but sometimes planned to rearrange the unit content. In the design arena, both the novice teacher and the expert teacher tended to appropriate the introduced tasks and definitions. The novice teacher often planned to appropriate the example problems and exercise problems, while the expert teacher often intended to flexibly use the example problems and exercise problems. In the construction arena, the novice teacher seldom adjusted the planned tasks; in contrast, the expert teacher adjusted the planned tasks more frequently. In the reflection arena, the novice teacher often thought she should improve the mathematics tasks, while the expert teacher almost always thought he needed to improve the mathematics tasks. The framework shown in this paper provides a tool to investigate how mathematics teachers use textbooks.

Improvement of the Waste Refrigerator Pre-processing Line in Metropolitan Recycling Center using Simulation (시뮬레이션 기반 수도권 리사이클링 센터 폐냉장고 전처리 공정 개선)

  • Kim, Do Gyun;Kang, Min Koo;Choi, Jin Young;Park, Kiejin;Kong, Man-Sik
    • Journal of the Korea Society for Simulation
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    • v.22 no.4
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    • pp.129-138
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    • 2013
  • This paper studies the improvement of a pre-processing line for waste refrigerators in a metropolitan recycling center(MRC). We performed ARENA modeling and simulation by using work analysis and time measurement on the current processing line. Combined this result with some practical experiences from workers, we generated 3 alternatives to improve the current line and evaluated them by using ARENA simulation. The final decision selected consists of changing 2-line process into 1-line and having a separate cell-line for collecting refrigerant. Currently, the result of this study was applied to MRC by improving cycle time, throughput, and space utilization compared to the previous one.

Estimating the benefit of constructing the international horse riding arena at Sangju (상주국제승마경기장 사업의 경제적 편익)

  • Jeong, Ki-Ho
    • Journal of the Korean Data and Information Science Society
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    • v.23 no.5
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    • pp.913-925
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    • 2012
  • This study evaluates the economic benefit of the project constructing the international riding arena having been built at Sangju in Gyeongsangbuk-Do by the willingness to pay (WTP) of residents in the province. As the evaluation method, the dichotomous choice contingent valuation method (CVM) is adopted with the additional questions of whether his/her WTP is zero, to improve the statistical accuracy of evaluation results. Considering the arena's administrative location, the population of the surveys for analysis is confined to residents of Daegu and Gyeongsangbuk-do. The survey is conducted through personal interviews. It turns out that the WTP per household per year is evaluated as 1,847 won and the total yearly benefit of the Sangju international horse riding arena is estimated as 3.56 billion won.