A Modeling and Simulation of Production Process in Subassembly Lines at a Shipyard

2004 ◽  
Vol 20 (02) ◽  
pp. 79-83
Author(s):  
Jong Gye Shin ◽  
Kwang Kook Lee ◽  
Jong Hun Woo ◽  
Won Don Kim ◽  
Jang Hyun Lee ◽  
...  
Keyword(s):  
Production Process ◽  
Process Model ◽  
Discrete Event ◽  
Unified Modeling Language ◽  
Simulation Method ◽  
Unified Modeling ◽  
Event Simulation ◽  
Modeling Methodology ◽  
Proposed Model ◽  
Welding Processes

In order to simulate material flow in a subassembly line at a shipyard, the product, process, and resources are modeled for the subassembly process. The subassembly line is selected from a large shipyard and consists of several subprocesses, such as base joining, piece alignment, tack welding, and robot welding processes. The analysis and modeling procedure were carried out using the Unified Modeling Language (UML), an object-oriented modeling methodology, and Integration Definition (IDEF), a functional modeling tool. Initially, the characteristics of the shop resources were analyzed using the shipyard data and the layout of the subassembly line was designed with the resources. A production process was then modeled using the resources and the layout. The production process modeling of the subassembly lines was performed using the discrete event simulation method. Using the constructed resource and process model, the productivity and efficiency of the line were investigated. Variations in the resource performance, such as a new welding robot and the number of workers, were examined to simulate changes in productivity. It can be seen that bottlenecks occur in different places according to the nature of new resources. The proposed model is viewed three-dimensionally in a virtual environment so that space allocations for the resources and interferences between objects can be easily investigated.

scholarly journals SIMULATION SERVICE PROVIDING IN A DISTRIBUTED SIMULATION ENVIRONMENT

2014 ◽  
pp. 38-45
Author(s):  
Alexey Cheptsov
Keyword(s):  
Distributed Simulation ◽  
Discrete Event ◽  
Unified Modeling Language ◽  
Simulation Environment ◽  
Simulation Framework ◽  
Web Based ◽  
Unified Modeling ◽  
Event Simulation ◽  
Complex Dynamic Systems ◽  
Unified Process

Simulation of complex dynamic systems is an interdisciplinary problem. To solve this problem the author suggests a distributed simulation environment as a new form of simulation means system organization that provides web-based distributed simulation of engineering and industrial tasks as simulation services using Discrete Event Simulation Framework on the basis of Grid infrastructure. The Unified Process of Simulation Services Development based on Unified Modeling Language is proposed.

scholarly journals A Simulation-Based Tool to Support Decision-Making in Logistics Design of a Can Packaging Line

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Victoria G. Achkar ◽  
Valentina Bär ◽  
Franco Cornú ◽  
Carlos A. Méndez
Keyword(s):  
Decision Making ◽  
Material Handling ◽  
Discrete Event ◽  
Inventory Systems ◽  
Dynamic Interactions ◽  
Event Simulation ◽  
Proposed Model ◽  
Simulation Based ◽  
And Performance ◽  
Support Decision Making

AbstractThis study proposes an advanced discrete-event simulation-based tool to support decision-making in the internal logistic design of a packaging line of a multinational brewery company. The selected software, Simio, allows emulating, advising and predicting the behavior of complex real-world systems. The simulation model provides a 3D interface that facilitates verification and validation. In this work, the designed model is used to understand the dynamic interactions between multiple factors and performance measures including both material-handling and inventory systems and to define necessary quantities and/or capacities of resources for a future can packaging line. Based on the proposed model, a what-if analysis is performed to determine inventory threshold values and other critical variables in order to optimize the configuration of internal logistics in potential scenarios.

scholarly journals Towards UML representation for BPMN and DMN models

2019 ◽  
Vol 252 ◽  
pp. 02007 ◽  
Author(s):  
Anna Suchenia ◽  
Paweł Łopata ◽  
Piotr Wiśniewski ◽  
Bernadetta Stachura-Terlecka
Keyword(s):  
Process Model ◽  
Business Models ◽  
Unified Modeling Language ◽  
Consistency Checking ◽  
Functional Requirements ◽  
Unified Modeling ◽  
Management Group ◽  
Design Alternatives ◽  
Software Engineers ◽  
Uml Models

Unified Modeling Language (UML) is a standardised Object Management Group (OMG) notation among software engineers. There have been many attempts to design alternatives to UML. Recently, new notations such as Business Process Model and Notation (BPMN) and Decision Model and Notation (DMN) have been proposed for modelling processes and decisions. These dedicated notations provide a simpler way of capturing functional requirements in a designer-friendly fashion. Moreover, some concepts as rules cannot be directly modelled in UML. Our research considers a method of translating business models such as BPMN and DMN into a set of consistent UML models, which can be later used by business analysts and developers to understand and implement the system. As a single notation design, it allows the user to take advantage of software supporting UML modelling and consistency checking, in addition using such translation can provide additional insights into OMG business models. Furthermore, the design provided in a single notation can be easier to follow and develop. This approach supports also visualisation of rules. It is important to mention that the proposed solution does not extend any custom UML artifacts and can be used with standard UML tools.

scholarly journals DESAIN NON-PLAYER CHARACTER PERMAINAN TIC-TAC-TOE DENGAN ALGORITMA MINIMAX

2019 ◽  
Vol 21 (3) ◽  
pp. 223-233
Author(s):  
Gunadi Emanuel ◽  
R. Kristoforus J. Bendi ◽  
Arieffianto Arieffianto
Keyword(s):  
Process Model ◽  
Development Process ◽  
Unified Modeling Language ◽  
Visual Basic ◽  
Software Modeling ◽  
Game Development ◽  
Unified Modeling ◽  
Board Games ◽  
Linear Sequence ◽  
Analysis Phase

Abstract :  Tic-Tac-Toe is one of the board games. It is played by filling the columns on the board with X or O in such a way as to form parallel lines vertically, horizontally and diagonally. This study aims to design Non-Player Characters (NPC) in the tic-tac-toe game with the minimax algorithm. The Tic-tac-toe game will be designed with two game modes: easy and minimum random modes. While in minimax NPC mode will determine the best step. The game development process of the tic-tac-toe application is based on a linear sequence process model. In the analysis phase, the NPC will be designed based on the concept of minimax. Software modeling was designed using Unified Modeling Language (UML), and coded with Visual Basic programming. Our tests show that NPCs with the Minimax algorithm can work well.

scholarly journals Simulation Project for Logistics of Brazilian Soybean Exportation

2020 ◽  
Vol 19 (4) ◽  
pp. 571-582
Author(s):  
H. S. Lopes ◽  
R. S. Lima ◽  
F. Leal
Keyword(s):  
Integrated Management ◽  
Discrete Event ◽  
International Market ◽  
Simulation Method ◽  
Strategic Analysis ◽  
Logistics System ◽  
Logistics Systems ◽  
Event Simulation ◽  
Global Logistics ◽  
Systems Simulation

Decision-making in complex logistics systems involves high risks and associated impacts. A way to forecast the impacts of these decisions is through the use of systems simulation projects, where the systematic impacts of the parameters can be visualized. This study presents a project based on Discrete-Event Simulation (DES) that analyses Brazilian soybean export logistics from producing regions to main international customers. The strategic analysis of a global logistics system using DES is a particularity of this study. At the conception stage, the conceptual modelling was made using IDEF-SIM (Integrated Definition Methods – Simulation) method, which allowed a better abstraction of reality and more accurate model implementation. The experimental analysis took place through the construction of 39 scenarios with specific characteristics that verified system behaviours through proposed changes. The analyses and decisions are based on costs. The simulations indicated the necessity for: a) an integrated management between the systems agents; b) the development of internal transportation infrastructure, especially railways and waterways, to increase competitiveness of Brazilian soybeans in the international market.

scholarly journals Simulation of a stochastic multi-echelon distribution supply chain under a continuous inventory control policy

2020 ◽  
Vol 9 (2) ◽  
pp. 262
Author(s):  
Hamid Ech-cheikh ◽  
Abdessamad Douraid ◽  
Khalid El Had
Keyword(s):  
Distribution System ◽  
Initial Conditions ◽  
Discrete Event ◽  
Control Policy ◽  
Simulation Framework ◽  
Event Simulation ◽  
Proposed Model ◽  
Inventory Control Policy ◽  
Distribution Process ◽  
Key Variables

Multi Echelon Distribution System (MEDS) is a multifaceted system focusing on integration of all factors involved in the entire distribution process of finished goods to customers. This paper proposes a simulation framework at the operational level of MEDS. The proposed model includes three echelons, based on discrete-event simulation approach, where the performed operations within our system are depending on several key variables that often seem to have strong interrelationships. It is necessary to simulate such complicated system, in order to understand the whole mechanism, to analyze the interactions between various components and eventually to provide information without decomposing the system. The simulation framework is used to evaluate the performance of the considered system at initial conditions and to compare it with different scenarios generated by simulation running. The study concludes with an analysis of system performance and the finding results according to each scenario.   

scholarly journals Modelling and Managing Airport Passenger Flow: A Case of Hasan Polatkan Airport in Turkey

2020 ◽  
Vol vm01 (is02) ◽  
pp. 71-79
Author(s):  
İlkay Orhan ◽  
Gamze Orhan
Keyword(s):  
Discrete Event ◽  
Management Strategies ◽  
Integrated System ◽  
Flow Process ◽  
Airport Management ◽  
Security Screening ◽  
Event Simulation ◽  
Passenger Flow ◽  
Multiple Components ◽  
Proposed Model

The airport passenger flow process is an integrated system in which passengers interact with multiple components of the system, and a failure in one component can cause greater disruption in others because of time-related constraints. Airport operators analyse and decide the results by using decision support systems under the airport management strategies by determining the potential congestion and related problems such as capacity limitations or equipment malfunctions. In this study, airport systems handle the passenger flow that covers all activities between the airport entrance and boarding. Discrete event simulation was used to assess the passenger flow and performing the activities in the related processes. The model comprises security screening, check-in, passport control and boarding processes. Within the proposed model, points with potential bottlenecks in Hasan Polatkan Airport have estimated according to International Air Transport Association (IATA) performance values.

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