This chapter introduces discrete-event simulation and outlines the key steps in a simulation study. It defines simulation as imitating the operation of a real-world process over time through a conceptual model. Simulation allows experimenting with "what if" scenarios to analyze the potential effects of changes. The chapter describes when simulation is an appropriate tool, its advantages and disadvantages, common application areas, and components of systems and models. It distinguishes between discrete and continuous systems and events. The final sections outline the development of a discrete-event simulation model and the steps of verifying and validating the model.
This document provides an introduction to discrete-event system simulation. It discusses key concepts such as the difference between discrete-event and discrete-time simulation, examples of when simulation is appropriate to use and not use, components of a simulation model including entities, attributes, events and state, and the typical steps involved in a simulation study including problem formulation, model building, running the model, and implementation. The document also provides examples of areas where simulation is commonly applied such as manufacturing, logistics, healthcare and more.
This document defines simulation and discusses its uses and limitations. Simulation involves developing a model of a system and running experiments on that model to understand the system's behavior and evaluate changes. It is best used when testing potential changes is too complex, costly or disruptive for the real system. The key advantages are exploring "what if" scenarios without impacting operations and compressing or expanding time. Potential challenges include the expertise required and interpreting results. Simulation has wide applications in manufacturing, military, transportation and other domains.
This document provides an introduction and overview of simulation modeling. It discusses when simulation is an appropriate tool, the advantages and disadvantages, common applications, and the basic components and types of systems that can be modeled. It also outlines the typical steps involved in a simulation study, including problem formulation, model building, experimentation and analysis, and documentation. Model building involves conceptualizing the model, collecting data, translating the model into a computer program, verifying that the program is working correctly, and validating the model outputs against real system behavior.
This document discusses simulation modeling and its applications. It begins with definitions of simulation as operating a model of a system over time to study its behavior. Simulation is used to evaluate system performance under different configurations before implementation. The key advantages are exploring "what if" scenarios without disrupting real systems and testing new designs. Common applications include manufacturing, construction, military, logistics and transportation. The document outlines the steps in a simulation study and discusses when simulation is appropriate versus not. It concludes with references on modeling and simulation.
Modeling and simulation is the use of models as a basis for simulations to develop data utilized for managerial or technical decision making. In the computer application of modeling and simulation a computer is used to build a mathematical model which contains key parameters of the physical model.
This document provides an overview of modeling and simulation. It defines modeling as representing a system to enable predicting the effects of changes. Simulation involves running experiments on a model. The key steps in modeling and simulation projects are: 1) identifying the problem, 2) formulating and developing the model, 3) validating the model, 4) designing simulation experiments, 5) performing simulations, and 6) analyzing and presenting results. Modeling and simulation can be used for a variety of purposes including education, design evaluation, forecasting, and risk assessment.
This document provides an overview of engineering analysis and design (modelling and simulation) with a focus on systems and simulation. It defines a system as a collection of components organized for a common purpose. Simulation is defined as imitating the operation of a real-world process over time by generating artificial history. The key benefits of simulation are that it allows experimenting with models to study the effects of changes before implementing them in the real world and to help with system analysis, design, and prediction.
This document provides an introduction to discrete-event system simulation. It discusses key concepts such as the difference between discrete-event and discrete-time simulation, examples of when simulation is appropriate to use and not use, components of a simulation model including entities, attributes, events and state, and the typical steps involved in a simulation study including problem formulation, model building, running the model, and implementation. The document also provides examples of areas where simulation is commonly applied such as manufacturing, logistics, healthcare and more.
This document defines simulation and discusses its uses and limitations. Simulation involves developing a model of a system and running experiments on that model to understand the system's behavior and evaluate changes. It is best used when testing potential changes is too complex, costly or disruptive for the real system. The key advantages are exploring "what if" scenarios without impacting operations and compressing or expanding time. Potential challenges include the expertise required and interpreting results. Simulation has wide applications in manufacturing, military, transportation and other domains.
This document provides an introduction and overview of simulation modeling. It discusses when simulation is an appropriate tool, the advantages and disadvantages, common applications, and the basic components and types of systems that can be modeled. It also outlines the typical steps involved in a simulation study, including problem formulation, model building, experimentation and analysis, and documentation. Model building involves conceptualizing the model, collecting data, translating the model into a computer program, verifying that the program is working correctly, and validating the model outputs against real system behavior.
This document discusses simulation modeling and its applications. It begins with definitions of simulation as operating a model of a system over time to study its behavior. Simulation is used to evaluate system performance under different configurations before implementation. The key advantages are exploring "what if" scenarios without disrupting real systems and testing new designs. Common applications include manufacturing, construction, military, logistics and transportation. The document outlines the steps in a simulation study and discusses when simulation is appropriate versus not. It concludes with references on modeling and simulation.
Modeling and simulation is the use of models as a basis for simulations to develop data utilized for managerial or technical decision making. In the computer application of modeling and simulation a computer is used to build a mathematical model which contains key parameters of the physical model.
This document provides an overview of modeling and simulation. It defines modeling as representing a system to enable predicting the effects of changes. Simulation involves running experiments on a model. The key steps in modeling and simulation projects are: 1) identifying the problem, 2) formulating and developing the model, 3) validating the model, 4) designing simulation experiments, 5) performing simulations, and 6) analyzing and presenting results. Modeling and simulation can be used for a variety of purposes including education, design evaluation, forecasting, and risk assessment.
This document provides an overview of engineering analysis and design (modelling and simulation) with a focus on systems and simulation. It defines a system as a collection of components organized for a common purpose. Simulation is defined as imitating the operation of a real-world process over time by generating artificial history. The key benefits of simulation are that it allows experimenting with models to study the effects of changes before implementing them in the real world and to help with system analysis, design, and prediction.
System modeling and simulation involves creating simplified representations of real-world systems to understand and evaluate their behavior over time. A system is composed of interconnected parts designed to achieve specific objectives. A model abstracts and simplifies a system for analysis. Simulation executes a model over time to observe how a system operates. It allows experimenting with systems that may be too expensive, dangerous or complex to study directly. Simulation has many uses including analyzing systems before implementation, optimizing designs, training, and evaluating "what-if" scenarios. Key areas where simulation is applied include manufacturing, business, healthcare, transportation and the military.
System modeling and simulation full notes by sushma shetty (www.vtulife.com)Vivek Maurya
This document provides an overview of system simulation and modelling. It discusses when simulation is an appropriate tool and areas it can be applied, including manufacturing, semiconductors, construction, the military, logistics and healthcare. Simulation allows experimenting with systems to study their behavior over time without disrupting operations. It enables testing new designs and policies. The document also covers system components like entities, attributes, and activities, and defines a system and its environment.
Introduction to simulation and modeling will describe what is simulation, what is system and what is model. It will give a brief overview of simulation and modeling in computer science.
This document provides an overview of discrete-event system simulation. It discusses what simulation is, when it is appropriate to use, its advantages and disadvantages. It also covers components of a system like entities, attributes, events. Different types of models are described - static vs dynamic and deterministic vs stochastic. Various application areas of simulation are listed like manufacturing, logistics, military etc.
Simulation involves developing a model of a real-world system over time to analyze its behavior and performance. The key aspects covered in this document include defining simulation as modeling the operation of a system over time through artificial history generation and observation. Simulation models can be used as analysis and design tools to predict the effects of changes to a system before actual implementation. Discrete event simulation is discussed as a common technique that models systems with state changes occurring at discrete points in time. The document also outlines the steps in a typical simulation study including problem formulation, model conceptualization, experimentation and analysis.
Overview of Performance Evaluation
Intro & Objective
The Art of Performance Evaluation
Professional Organizations, Journals, and conferences.
Performance Projects
Common Mistakes and How to Avoid Them
Selection of Techniques and Metrics
Discrete event simulation allows users to model real-world systems over time through imitation. It generates artificial histories to draw inferences about system behavior and operating characteristics without disrupting the real system. Simulation is useful when analytical solutions are not possible due to complex, random factors or when experimentation and testing are needed. Key advantages include exploring changes safely, compressing or expanding time, and gaining insights into variable interactions. Common applications include manufacturing, transportation, healthcare, and business processes.
System simulation & modeling notes[sjbit]qwerty626
The document discusses simulation modeling and provides an introduction to the topic. It defines simulation as imitating the operation of a real-world process over time. Simulation models take the form of assumptions expressed mathematically or logically about the relationships between system entities. Simulation is appropriate when a system is too complex to understand through other means or to experiment with system changes safely. The document outlines the components of a system and types of models. It also describes the basic steps involved in a simulation study from problem formulation to implementation.
Cybernetics in supply chain managementLuis Cabrera
This document discusses the role of operations research and simulation modeling in developing a cybernetic dynamic simulation model of a manufacturing supply chain system. It notes that production planning is a key but complex component that benefits from mathematical algorithms and computer modeling. Simulation allows analyzing complex systems with many variables and obtaining solutions that aren't possible with closed-form equations. The document provides examples of why simulation is useful and discusses representing real-world processes and testing different configurations and policies.
This document discusses systems analysis and simulation. It defines a system as a collection of elements that work together to achieve a goal. There are two main types of systems: discrete systems where state variables change at separate points in time, and continuous systems where state variables change continuously over time. A model represents a system in order to study it, as experimenting directly with the real system may not be possible or wise. Simulation models can be static or dynamic, deterministic or stochastic, discrete or continuous. Discrete-event simulation specifically models systems as they progress through time as a series of instantaneous events.
Systems can be classified in three ways: by complexity, interconnectivity of components, and nature of components. Physical systems have quantifiable variables while conceptual systems do not. Esoteric systems cannot be measured. Systems are independent if components do not affect each other, cascaded if effects are unilateral, or coupled if effects are mutual. Components can be static or dynamic, linear or nonlinear, deterministic or stochastic. There are 12 steps to simulation studies including problem formulation, model building, validation, experimentation, and reporting.
Introduction to modeling_and_simulationAysun Duran
1. This document provides an introduction to modeling and simulation. It discusses what modeling and simulation are, and the types of problems they can address.
2. Simulation involves operating a model of a system to study the system's properties without actually changing the real system. It allows experimenting with different configurations to evaluate and optimize system performance.
3. Developing a simulation model involves identifying the system components and relationships between them. Validating the model and performing simulation experiments then allows making recommendations to improve the real system.
This document provides an overview of modeling and simulation. It discusses what modeling and simulation are, the steps in developing a simulation model, designing a simulation experiment, and analyzing simulation output. It also provides an example of simulating a machine shop with multiple work stations to determine resource utilization under different arrival patterns. The key steps in a simulation study are problem formulation, model development, experiment design, output analysis and recommendations.
Simulation and Modelling Reading Notes.pptxDanMuendo1
This document discusses simulation and modeling. It defines simulation as imitating real-life situations using computer models. Models represent systems using mathematical relationships. Simulation allows experimenting with models to understand system behavior under different conditions without changing the real system. The document outlines the modeling and simulation process and provides examples of applications in areas like business planning, drug development, and traffic analysis.
Luis Garcia Guzman discusses process improvement through discrete event simulation. He outlines the steps in a simulation study including problem formulation, model conceptualization, validation, experimentation and analysis. Garcia Guzman then provides two examples of process simulation: optimizing a automotive paint shop operation to increase yield, and reducing work-in-process inventory in an automotive assembly area through scheduling and lot sizing changes.
This document provides an overview of simulation and modeling. It discusses key concepts such as systems, states, activities, and classification of systems. It also covers the system methodology process including planning, modeling, validation, and application. Examples are provided on simulating a coin toss and daily demand for a grocery store. Advantages and disadvantages of simulation are listed. The document appears to be from a textbook on simulation and modeling and provides foundational information on the topic.
Simulation involves creating computer-based models to imitate real-world processes. The model represents key behaviors and characteristics of the selected process, and the simulation shows how the model evolves under different conditions over time. Simulations are used for decision-making, training, and understanding systems. They allow testing of scenarios and process changes in a safe environment without financial risks. Common types of simulation include discrete event simulation for processes like factory operations, dynamic simulation for machine kinematics, and process simulation for physical interactions between systems. Simulations are applied across industries for evaluation, prediction, and insights into performance improvement.
This document discusses modeling and simulation. It defines a model as a representation of an object, system, or idea that is different from the actual entity. Models are used to test systems without creating real versions, predict future behavior, train users safely, and investigate systems in detail. The document outlines different types of modeling including physics-based, finite element, data-based, multi-scale, mathematical, and hybrid modeling. It also discusses conceptual modeling and creating block diagrams to represent systems as subsystems and connections. Criteria for separating systems into subsystems include anatomy, function, and measurability of inputs and outputs.
From Model-based to Model and Simulation-based Systems ArchitecturesObeo
Achieving quality engineering through descriptive and analytical models
Systems architecture design is a key activity that affect the
overall systems engineering cost. It is hence fundamental
to ensure that the system architecture reaches a proper quality.
In this paper, we leverage on MBSE approaches and complement them
with simulation techniques, as a prom-ising way to improve the quality of the system architecture definition, and to come up with inno-vative solutions while securing the systems engineering process.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
System modeling and simulation involves creating simplified representations of real-world systems to understand and evaluate their behavior over time. A system is composed of interconnected parts designed to achieve specific objectives. A model abstracts and simplifies a system for analysis. Simulation executes a model over time to observe how a system operates. It allows experimenting with systems that may be too expensive, dangerous or complex to study directly. Simulation has many uses including analyzing systems before implementation, optimizing designs, training, and evaluating "what-if" scenarios. Key areas where simulation is applied include manufacturing, business, healthcare, transportation and the military.
System modeling and simulation full notes by sushma shetty (www.vtulife.com)Vivek Maurya
This document provides an overview of system simulation and modelling. It discusses when simulation is an appropriate tool and areas it can be applied, including manufacturing, semiconductors, construction, the military, logistics and healthcare. Simulation allows experimenting with systems to study their behavior over time without disrupting operations. It enables testing new designs and policies. The document also covers system components like entities, attributes, and activities, and defines a system and its environment.
Introduction to simulation and modeling will describe what is simulation, what is system and what is model. It will give a brief overview of simulation and modeling in computer science.
This document provides an overview of discrete-event system simulation. It discusses what simulation is, when it is appropriate to use, its advantages and disadvantages. It also covers components of a system like entities, attributes, events. Different types of models are described - static vs dynamic and deterministic vs stochastic. Various application areas of simulation are listed like manufacturing, logistics, military etc.
Simulation involves developing a model of a real-world system over time to analyze its behavior and performance. The key aspects covered in this document include defining simulation as modeling the operation of a system over time through artificial history generation and observation. Simulation models can be used as analysis and design tools to predict the effects of changes to a system before actual implementation. Discrete event simulation is discussed as a common technique that models systems with state changes occurring at discrete points in time. The document also outlines the steps in a typical simulation study including problem formulation, model conceptualization, experimentation and analysis.
Overview of Performance Evaluation
Intro & Objective
The Art of Performance Evaluation
Professional Organizations, Journals, and conferences.
Performance Projects
Common Mistakes and How to Avoid Them
Selection of Techniques and Metrics
Discrete event simulation allows users to model real-world systems over time through imitation. It generates artificial histories to draw inferences about system behavior and operating characteristics without disrupting the real system. Simulation is useful when analytical solutions are not possible due to complex, random factors or when experimentation and testing are needed. Key advantages include exploring changes safely, compressing or expanding time, and gaining insights into variable interactions. Common applications include manufacturing, transportation, healthcare, and business processes.
System simulation & modeling notes[sjbit]qwerty626
The document discusses simulation modeling and provides an introduction to the topic. It defines simulation as imitating the operation of a real-world process over time. Simulation models take the form of assumptions expressed mathematically or logically about the relationships between system entities. Simulation is appropriate when a system is too complex to understand through other means or to experiment with system changes safely. The document outlines the components of a system and types of models. It also describes the basic steps involved in a simulation study from problem formulation to implementation.
Cybernetics in supply chain managementLuis Cabrera
This document discusses the role of operations research and simulation modeling in developing a cybernetic dynamic simulation model of a manufacturing supply chain system. It notes that production planning is a key but complex component that benefits from mathematical algorithms and computer modeling. Simulation allows analyzing complex systems with many variables and obtaining solutions that aren't possible with closed-form equations. The document provides examples of why simulation is useful and discusses representing real-world processes and testing different configurations and policies.
This document discusses systems analysis and simulation. It defines a system as a collection of elements that work together to achieve a goal. There are two main types of systems: discrete systems where state variables change at separate points in time, and continuous systems where state variables change continuously over time. A model represents a system in order to study it, as experimenting directly with the real system may not be possible or wise. Simulation models can be static or dynamic, deterministic or stochastic, discrete or continuous. Discrete-event simulation specifically models systems as they progress through time as a series of instantaneous events.
Systems can be classified in three ways: by complexity, interconnectivity of components, and nature of components. Physical systems have quantifiable variables while conceptual systems do not. Esoteric systems cannot be measured. Systems are independent if components do not affect each other, cascaded if effects are unilateral, or coupled if effects are mutual. Components can be static or dynamic, linear or nonlinear, deterministic or stochastic. There are 12 steps to simulation studies including problem formulation, model building, validation, experimentation, and reporting.
Introduction to modeling_and_simulationAysun Duran
1. This document provides an introduction to modeling and simulation. It discusses what modeling and simulation are, and the types of problems they can address.
2. Simulation involves operating a model of a system to study the system's properties without actually changing the real system. It allows experimenting with different configurations to evaluate and optimize system performance.
3. Developing a simulation model involves identifying the system components and relationships between them. Validating the model and performing simulation experiments then allows making recommendations to improve the real system.
This document provides an overview of modeling and simulation. It discusses what modeling and simulation are, the steps in developing a simulation model, designing a simulation experiment, and analyzing simulation output. It also provides an example of simulating a machine shop with multiple work stations to determine resource utilization under different arrival patterns. The key steps in a simulation study are problem formulation, model development, experiment design, output analysis and recommendations.
Simulation and Modelling Reading Notes.pptxDanMuendo1
This document discusses simulation and modeling. It defines simulation as imitating real-life situations using computer models. Models represent systems using mathematical relationships. Simulation allows experimenting with models to understand system behavior under different conditions without changing the real system. The document outlines the modeling and simulation process and provides examples of applications in areas like business planning, drug development, and traffic analysis.
Luis Garcia Guzman discusses process improvement through discrete event simulation. He outlines the steps in a simulation study including problem formulation, model conceptualization, validation, experimentation and analysis. Garcia Guzman then provides two examples of process simulation: optimizing a automotive paint shop operation to increase yield, and reducing work-in-process inventory in an automotive assembly area through scheduling and lot sizing changes.
This document provides an overview of simulation and modeling. It discusses key concepts such as systems, states, activities, and classification of systems. It also covers the system methodology process including planning, modeling, validation, and application. Examples are provided on simulating a coin toss and daily demand for a grocery store. Advantages and disadvantages of simulation are listed. The document appears to be from a textbook on simulation and modeling and provides foundational information on the topic.
Simulation involves creating computer-based models to imitate real-world processes. The model represents key behaviors and characteristics of the selected process, and the simulation shows how the model evolves under different conditions over time. Simulations are used for decision-making, training, and understanding systems. They allow testing of scenarios and process changes in a safe environment without financial risks. Common types of simulation include discrete event simulation for processes like factory operations, dynamic simulation for machine kinematics, and process simulation for physical interactions between systems. Simulations are applied across industries for evaluation, prediction, and insights into performance improvement.
This document discusses modeling and simulation. It defines a model as a representation of an object, system, or idea that is different from the actual entity. Models are used to test systems without creating real versions, predict future behavior, train users safely, and investigate systems in detail. The document outlines different types of modeling including physics-based, finite element, data-based, multi-scale, mathematical, and hybrid modeling. It also discusses conceptual modeling and creating block diagrams to represent systems as subsystems and connections. Criteria for separating systems into subsystems include anatomy, function, and measurability of inputs and outputs.
From Model-based to Model and Simulation-based Systems ArchitecturesObeo
Achieving quality engineering through descriptive and analytical models
Systems architecture design is a key activity that affect the
overall systems engineering cost. It is hence fundamental
to ensure that the system architecture reaches a proper quality.
In this paper, we leverage on MBSE approaches and complement them
with simulation techniques, as a prom-ising way to improve the quality of the system architecture definition, and to come up with inno-vative solutions while securing the systems engineering process.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
1. Chapter 1 Introduction to
Simulation
Banks, Carson, Nelson & Nicol
Discrete-Event System Simulation
2. 2
Outline
„ When Simulation Is the Appropriate Tool
„ When Simulation Is Not Appropriate
„ Advantages and Disadvantages of Simulation
„ Areas of Application
„ Systems and System Environment
„ Components of a System
„ Discrete and Continuous Systems
„ Model of a System
„ Types of Models
„ Discrete-Event System Simulation
„ Steps in a Simulation Study
3. 3
Definition
„ A simulation is the imitation of the operation of real-world
process or system over time.
Generation of artificial history and observation of that
observation history
„ A model construct a conceptual framework that
describes a system
„ The behavior of a system that evolves over time is
studied by developing a simulation model.
„ The model takes a set of expressed assumptions:
Mathematical, logical
Symbolic relationship between the entities
4. 4
Goal of modeling and simulation
„ A model can be used to investigate a wide verity of “what
if” questions about real-world system.
Potential changes to the system can be simulated and predicate
their impact on the system.
Find adequate parameters before implementation
„ So simulation can be used as
Analysis tool for predicating the effect of changes
Design tool to predicate the performance of new system
„ It is better to do simulation before Implementation.
5. 5
How a model can be developed?
„ Mathematical Methods
Probability theory, algebraic method ,…
Their results are accurate
They have a few Number of parameters
It is impossible for complex systems
„ Numerical computer-based simulation
It is simple
It is useful for complex system
6. 6
When Simulation Is the Appropriate Tool
„ Simulation enable the study of internal interaction of a subsystem
with complex system
„ Informational, organizational and environmental changes can be
simulated and find their effects
„ A simulation model help us to gain knowledge about improvement of
system
„ Finding important input parameters with changing simulation inputs
„ Simulation can be used with new design and policies before
implementation
„ Simulating different capabilities for a machine can help determine
the requirement
„ Simulation models designed for training make learning possible
without the cost disruption
„ A plan can be visualized with animated simulation
„ The modern system (factory, wafer fabrication plant, service
organization) is too complex that its internal interaction can be
treated only by simulation
7. 7
When Simulation Is Not Appropriate
„ When the problem can be solved by common
sense.
„ When the problem can be solved analytically.
„ If it is easier to perform direct experiments.
„ If cost exceed savings.
„ If resource or time are not available.
„ If system behavior is too complex.
Like human behavior
8. 8
Advantages and disadvantages of simulation
„ In contrast to optimization models, simulation
models are “run” rather than solved.
Given as a set of inputs and model characteristics the
model is run and the simulated behavior is observed
9. 9
Advantages of simulation
„ New policies, operating procedures, information flows and son on
can be explored without disrupting ongoing operation of the real
system.
„ New hardware designs, physical layouts, transportation systems
and … can be tested without committing resources for their
acquisition.
„ Time can be compressed or expanded to allow for a speed-up or
slow-down of the phenomenon( clock is self-control).
„ Insight can be obtained about interaction of variables and important
variables to the performance.
„ Bottleneck analysis can be performed to discover where work in
process, the system is delayed.
„ A simulation study can help in understanding how the system
operates.
„ “What if” questions can be answered.
10. 10
Disadvantages of simulation
„ Model building requires special training.
Vendors of simulation software have been actively
developing packages that contain models that only
need input (templates).
„ Simulation results can be difficult to interpret.
„ Simulation modeling and analysis can be time
consuming and expensive.
Many simulation software have output-analysis.
11. 11
Areas of application
„ Manufacturing Applications
„ Semiconductor Manufacturing
„ Construction Engineering and project management
„ Military application
„ Logistics, Supply chain and distribution application
„ Transportation modes and Traffic
„ Business Process Simulation
„ Health Care
„ Automated Material Handling System (AMHS)
Test beds for functional testing of control-system software
„ Risk analysis
Insurance, portfolio,...
„ Computer Simulation
CPU, Memory,…
„ Network simulation
Internet backbone, LAN (Switch/Router), Wireless, PSTN (call center),...
12. 12
Systems and System Environment
„ A system is defined as a groups of objects that
are joined together in some regular interaction
toward the accomplishment of some purpose.
An automobile factory: Machines, components parts
and workers operate jointly along assembly line
„ A system is often affected by changes occurring
outside the system: system environment.
Factory : Arrival orders
„ Effect of supply on demand : relationship between factory
output and arrival (activity of system)
Banks : arrival of customers
13. 13
Components of system
„ Entity
An object of interest in the system : Machines in factory
„ Attribute
The property of an entity : speed, capacity
„ Activity
A time period of specified length :welding, stamping
„ State
A collection of variables that describe the system in any time : status of machine
(busy, idle, down,…)
„ Event
A instantaneous occurrence that might change the state of the system:
breakdown
„ Endogenous
Activities and events occurring with the system
„ Exogenous
Activities and events occurring with the environment
14. 14
Discrete and Continues Systems
„ A discrete system is one in which the state variables
change only at a discrete set of points in time : Bank
example
15. 15
Discrete and Continues Systems (cont.)
„ A continues system is one in which the state variables
change continuously over time: Head of water behind the
dam
16. 16
Model of a System
„ To study the system
it is sometimes possible to experiments with system
„ This is not always possible (bank, factory,…)
„ A new system may not yet exist
„ Model: construct a conceptual framework that
describes a system
It is necessary to consider those accepts of systems
that affect the problem under investigation
(unnecessary details must remove)
18. 18
Characterizing a Simulation Model
Characterizing a Simulation Model
„ Deterministic or Stochastic
Does the model contain stochastic components?
Randomness is easy to add to a DES
„ Static or Dynamic
Is time a significant variable?
„ Continuous or Discrete
Does the system state evolve continuously or only at
discrete points in time?
Continuous: classical mechanics
Discrete: queuing, inventory, machine shop models
19. 19
Discrete-Event Simulation Model
„ Stochastic: some state variables are random
„ Dynamic: time evolution is important
„ Discrete-Event: significant changes occur at
discrete time instances
21. 21
DES Model Development
DES Model Development
How to develop a model:
1) Determine the goals and objectives
2) Build a conceptual model
3) Convert into a specification model
4) Convert into a computational model
5) Verify
6) Validate
Typically an iterative process
22. 22
Three Model Levels
Three Model Levels
„ Conceptual
Very high level
How comprehensive should the model be?
What are the state variables, which are dynamic, and which are
important?
„ Specification
On paper
May involve equations, pseudocode, etc.
How will the model receive input?
„ Computational
A computer program
General-purpose PL or simulation language?
23. 23
Verification vs. Validation
Verification vs. Validation
„ Verification
Computational model should be consistent with
specification model
Did we build the model right?
„ Validation
Computational model should be consistent with the
system being analyzed
Did we build the right model?
Can an expert distinguish simulation output from
system output?
„ Interactive graphics can prove valuable