Animated Visualization of Software History Using Software Evolution Storyboards
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This document proposes and demonstrates evolution storyboards, a new technique for visualizing software evolution over time. Evolution storyboards display the evolution of a software system through a series of panels that depict important events and periods in the system's lifetime. Nodes represent code elements and edges show code changes. Properties of the layout algorithm and approach are described. The technique is illustrated using open source systems and shown to help understand software structure, explain decay, and identify refactoring opportunities.
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How to Use Innoslate for Advanced Users
Steven Dam, Ph.D, ESEP will provide you with a deeper understanding of how to use Innoslate in the Advanced webinar. He will discuss more complex systems engineering topics. You will learn how to use Innoslate for more than just systems engineering, but also architecture, project management, asset management, etc. Improve your teams overall output and become an expert at model-based systems engineering and Innoslate.
System engineering
The document discusses system engineering and defines key concepts. System engineering focuses on designing complex engineering projects by defining customer needs early and documenting required functionality. It uses a waterfall model with little iteration between phases due to hardware costs. System engineering involves interaction between different engineering disciplines that require negotiation due to different vocabularies. The system engineering process includes stating problems, investigating alternatives, modeling the system, integrating elements, launching the system, and assessing performance.
Design pattern
[1] Design patterns provide flexible and reusable solutions to common software design problems. They improve code quality by avoiding reinventing solutions and allowing knowledge sharing.
[2] The Strategy pattern allows algorithms to be changed independently of clients that use them. This decouples classes from specific implementations so one class can support multiple behaviors.
[3] Tightly coupled patterns have high dependency between common classes, while loosely coupled patterns connect classes loosely to improve maintainability and reusability. The Abstract Factory and Visitor patterns can be loosely coupled to benefit software quality.
01_IT4557.pptx
This document introduces software engineering and model-driven development. It discusses that software engineering is about building complex systems while dealing with frequent change and complexity. It aims to help readers understand system modeling using techniques like use case, object, dynamic, and issue modeling. The document also discusses that software engineering involves both technical and managerial knowledge, including modeling methods, UML, design patterns, and software project management. The overall goal is to help readers learn how to produce high-quality software on time while managing complexity and change.
Modelos de desarrollo de software
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EclipseCon Eu 2015 - Breathe life into your Designer!
You have your shiny new DSL up and running thanks to the Eclipse Modeling Technologies and you built a powerful tooling with graphical modelers, textual syntaxes or dedicated editors to support it. But how can you see what is going on when a model is executed ? Don't you need to simulate your design in some way ? Wouldn't you want to see your editors being animated directly within your modeling environment based on execution traces or simulator results?
The GEMOC Research Project designed a methodology to bring animation and execution analysis to DSLs. The companion technologies required to put this in action are small dedicated components (all open-source) at a "proof of concept" maturity level extending proven components : Sirius, Eclipse Debug, Xtend making such features within the reach of Eclipse based tooling. The general intent regarding those OSS technologies is to leverage them within different contexts and contribute them to Eclipse once proven strong enough. The method covers a large spectrum of use cases from DSLs with a straightforward execution semantic to a combination of different DSLs with concurrent execution semantic. Any tool provider can leverage both the technologies and the method to provide an executable DSL and animated graphical modelers to its users enabling simulation and debugging at an early phase of the design.
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Title:
Modeling and Simulation of Electrical Power Systems using OpenIPSL.org and GridDyn
Presenters:
Luigi Vanfretti (RPI) & Philip Top (LNLL)
luigi.vanfretti@gmail.com, top1@llnl.gov
Abstract:
The Modelica language, being standardized and equation-based, has proven valuable for the for model exchange, simulation and even for model validation applications in actual power systems. These important features have been now recognized by the European Network of Transmission System Operators, which have adopted the Modelica language for dynamic model exchange in the Common Grid Model Exchange Standard (v2.5, Annex F).
Following previous FP7 project results, within the ITEA 3 openCPS project, the presenters have continued the efforts of using the Modelica language for power system modeling and simulation, by developing and maintaining the OpenIPSL library: https://github.com/SmarTS-Lab/OpenIPSL
This seminar first gives an overview of the origins of the OpenIPSL and it’s models, it contrasts it against typical power system tools, and gives an introduction the OpenIPSL library. The new project features that help in the OpenIPSL maintenance (use of continuous integration, regression testing, documentation, etc.) are also described.
Finally, the seminar will present current work at LNLL that exploits OpenIPSL in coordination with other tools including ongoing work integrating openIPSL models into GridDyn an open-source power system simulation tool, as well as a demos of the use of openIPSL libraries in GridDyn.
Bios:
Luigi Vanfretti (SMIEEE’14) obtained the M.Sc. and Ph.D. degrees in electric power engineering at Rensselaer Polytechnic Institute, Troy, NY, USA, in 2007 and 2009, respectively.
He was with KTH Royal Institute of Technology, Stockholm, Sweden, as Assistant 2010-2013), and Associate Professor (Tenured) and Docent (2013-2017/August); where he lead the SmarTS Lab and research group. He also worked at Statnett SF, the Norwegian electric power transmission system operator, as consultant (2011 - 2012), and Special Advisor in R&D (2013 - 2016).
He joined Rensselaer Polytechnic Institute in August 2017, to continue to develop his research at ALSETLab: http://alsetlab.com
His research interests are in the area of synchrophasor technology applications; and cyber-physical power system modeling, simulation, stability and control.
Philp Top (Lawrence Livermore National Lab)
PhD 2007 Purdue University. Currently a Research Engineer at Lawrence Livermore National Laboratory in Livermore, CA. Philip has been involved in several projects connected with the DOE effort on Grid Modernization including projects on modeling and simulation, co-simulation and smart grid data analytics. He is the principle developer on the open source power system simulation tool GridDyn, and a key contributor to the HELICS open source co-simulation framework.
Unit 1b
This document discusses various topics related to embedded and real-time system design including design methodologies, flows, requirements analysis, specifications, system analysis and architecture design, and quality assurance. It describes five design flows: waterfall model, spiral model, successive refinement, hierarchical design flows, and concurrent engineering. It also discusses requirements analysis, specifications languages like SDL, system analysis techniques like CRC cards, and quality assurance methods including ISO 9000 and CMM levels.
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Ogh fmw experience 16 februari 2016A.Levenchuk -- Systems Engineering Thinking
Systems engineering is an interdisciplinary approach that focuses on understanding stakeholder needs, exploring opportunities to meet those needs, and synthesizing and evolving solutions while considering the complete problem from concept to disposal. It deals with complexity by taking a holistic view. The Apollo program is an example of successful systems engineering, landing 12 astronauts on the moon and returning 382kg of lunar samples to Earth between 1969-1972. Systems engineering standards and documents provide guidance on structuring principles, life cycle processes, and architecture descriptions.
Requirements analysis lecture
The document discusses requirements analysis and specification. It describes the requirements engineering (RE) process, including elicitation, analysis, specification, and human-machine interface design. It distinguishes between the problem domain, described by requirements documents, and the system to be built, described by specification documents. Requirements analysis involves studying user needs to define system requirements and the problem domain. Objectives include prioritizing requirements and resolving conflicts. Requirements specification defines the behavior of the new system such that it satisfies the problem domain. Models are used throughout requirements analysis and specification to better understand problems and solutions.
CS101- Introduction to Computing- Lecture 31
Virtual University
Course CS101- Introduction to Computing
Lecture No 31
Developing Presentations
Mark Walker: Model Based Systems Engineering Initial Stages for Power & E...
EnergyTech2015.com
PROCESS AND METHODS
Track 3 Session 1 Moderator: Matthew Hause
Capturing stakeholder needs with MBSE and using the System of Systems VEE™ model for evaluating control, communications, and threat and vulnerability assessment.
Mark Walker- Paper 1: Process and Methods: A fundamental premise of this presentation is that capturing stakeholder needs and the initial development of Systems Engineering documents and architecture models, with top level capability needs/requirements, in a well written rational Concept Document (OCD). This needs to be developed during the first stages of a development which is absolutely critical for the entire life cycle of the system development. With this information in the OCD, written substantially in the stakeholder’s operational terminology, and with Systems Modeling Language (SysMLTM) architecture views, this set of integrated products provide the foundation for all future stages of a development and the system’s operational life. The primary emphasis is the critical importance of the “System” Use Case Diagrams (SysUCD), their associated Scenarios and Sequence Diagrams and how essential it is to develop these with the operational customer in this first stage. This is accomplished by applying the Stakeholder Needs Analysis process using the recommended Object Oriented Systems Engineering Method (OOSEM) and translating the information into well-defined stakeholder and systems engineering products and architecture views/models
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EclipseCon Eu 2015 - Breathe life into your Designer!
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4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
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对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
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- 1. EPFLEPFL Dirk.Beyer@epfl.chDirk.Beyer@epfl.ch Dirk BeyerDirk Beyer Simon Fraser UniversitySimon Fraser University Dirk.Beyer@sfu.caDirk.Beyer@sfu.ca Animated Visualization of Software History Using Evolution Storyboards Ahmed E. HassanAhmed E. Hassan University Of VictoriaUniversity Of Victoria ahmed@uvic.caahmed@uvic.ca
- 2. Visualizing Software Evolution • Static visualizations of evolution: – fail to capture the dynamics of software evolution • A movie visualization of evolution: – is not easy to control by developers (who want to focus on particular time periods, or parts of a system) • We propose a visualization, evolution storyboards, which strikes a balance between static and movie visualizations
- 3. Storyboard • Produced traditionally beforehand for directors and cinematographers • Used to study movie scenes and to uncover potential problems before they occur
- 5. Evolution Storyboard • An evolution storyboard contains dynamic panels • Each panel depicts consecutively important events and periods in the lifetime of long- lived software systems
- 6. Our Graph Model • Nodes: files/functions/subsystems • Edges: co-change (from CVS) • Layout: energy-based A B C D A B C D C1 C2
- 7. Studied Systems System Years Commits Nodes Edges ArgoUML 8 10,108 20,247 57,036 PostgreSQL 9 7,882 9,086 35,809 Mozilla 6 9,950 11,754 30,938
- 8. Properties of Our Layout Algorithm • Related nodes are placed together, non-related nodes are placed far apart • Strongly connected nodes separate out from the rest of the graph
- 9. Approach Overview • To avoid blur and clutter: – We ignore small movements of a node, • if its degree did not change – We do not highlight a node’s movement, • if it did not move much (e.g. < 1% of panel size) • if its degree is too small – We use a “follow your neighbors” heuristic
- 10. Storyboard Colouring • Authoritative decomposition: – subsystems / directory • Heat Map based on a node’s movement: – Orange (moved in 40% of panels), Yellow (30%), Green (20%), Gray (10%)
- 11. Panels in Evolution Storyboards
- 12. Panels in Evolution Storyboards
- 13. Benefits of Evolution Storyboards • Spot good structure – well separated nodes • Explain decay symptoms: – colouring patterns (separate/mixed colours) • Highlight refactoring candidates: – frequently moving nodes (using heat colouring)
- 15. Mozilla 1st Panel in Storyboard
- 18. Conclusion • Static visualizations of evolution do not capture the dynamics of software evolution • The approach has been applied to several large software systems: Mozilla, ArgoUML, PostgreSQL • Evolution storyboards can help: – Spot good structure – Explain design decay – Highlight refactoring candidates