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Related Concept Videos

Block Diagram Reduction01:22

Block Diagram Reduction

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The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
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Albert Bandura's theory of observational learning identifies four critical processes: attention, retention, motor reproduction, and reinforcement or motivation.
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Block diagrams serve as a visual representation of the input-output relationships within a system. An illustrative example is a heating system, where the set temperature activates the furnace to warm the room to the desired level. Block diagrams are versatile, modeling linear systems through Laplace transform variables and nonlinear systems using time domain variables.
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Simplified Synchronous Machine Model01:30

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The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
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When it comes to studying the behavior of objects in mechanics, one of the most important tools available is the free-body diagram. Consider a simple example of a system of two blocks coupled by a massless string over a frictionless pulley. Block 1 is sliding over a table pulled by block 2 as block 2 falls under gravity.
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The first step in describing and analyzing most phenomena in physics involves the careful drawing of a free-body diagram. Free-body diagrams are useful in analyzing forces acting on an object or system, and are employed extensively in the study and application of Newton's laws of motion. The steps to draw a free-body diagram are listed below:
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Updated: Aug 26, 2025

Modeling an Enzyme Active Site using Molecular Visualization Freeware
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Live process modeling with the BPMN Sketch Miner.

Ana Ivanchikj1, Souhaila Serbout1, Cesare Pautasso1

  • 1Software Institute, USI, Lugano, Switzerland.

Software and Systems Modeling
|October 5, 2022
PubMed
Summary

BPMN Sketch Miner enables rapid visual business process model creation from text. Performance evaluations confirm its suitability for live, synchronized model editing during workshops.

Keywords:
Business Process Model and Notation (BPMN)Domain-specific languagesPerformance evaluationProcess mining

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Area of Science:

  • Computer Science
  • Software Engineering

Background:

  • Business process modeling (BPM) is crucial for organizational efficiency.
  • Manual creation of visual BPMN models can be time-consuming and iterative.
  • Existing tools may lack intuitive interfaces for rapid, collaborative model sketching.

Purpose of the Study:

  • To introduce BPMN Sketch Miner, a tool for generating visual business process models from constrained natural language.
  • To evaluate the tool's performance and its suitability for rapid, live model editing cycles.
  • To assess the usability and learnability of the BPMN Sketch Miner environment.

Main Methods:

  • Describing the design decisions and supported control flow patterns of BPMN Sketch Miner's textual DSL.
  • Summarizing user study and survey results from MODELS 2020 on usability and learnability.
  • Conducting a new performance evaluation of the visual model generation pipeline using a benchmark of 1350 user-exported models.

Main Results:

  • The tool's performance is adequate for a smooth live modeling user experience.
  • The text-to-model-to-visual pipeline execution time scales linearly with model size.
  • User studies indicated positive usability and learnability for the tool.

Conclusions:

  • BPMN Sketch Miner effectively supports rapid sketching and live feedback during business process modeling workshops.
  • The tool's performance is sufficient for real-time synchronization between textual input and visual output.
  • The linear performance scaling ensures usability even with larger, more complex models.