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Electromagnetic Fields01:30

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Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
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Energy Diagrams - II01:10

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Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
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Magnetostatic Boundary Conditions01:28

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An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
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Energy Diagrams - I01:14

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The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
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Analyzing AC circuits in electrical systems is a fundamental aspect of electrical engineering. In these circuits, AC power is supplied from a distribution panel and wired to various household appliances in parallel. To perform a comprehensive analysis, electrical engineers use Kirchhoff's voltage and current laws, which are equally applicable in AC circuits as in DC circuits.
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Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ABCD, and the top face be FGHK. The electric field between the plates is uniform and points from the positive plate toward the negative plate. The calculation of this field's flux through the box's various faces shows that the net flux through the box is zero. Why does the flux cancel out here?
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ChronoSphere: a graph-based EMF model repository for IT landscape models.

Martin Haeusler1, Thomas Trojer2, Johannes Kessler1

  • 11University of Innsbruck, 6020 Innsbruck, Austria.

Software and Systems Modeling
|January 25, 2020
PubMed
Summary
This summary is machine-generated.

Managing IT landscape models is challenging due to complexity and poor tool support. Our solution combines domain-driven modeling with graph technology for scalable IT infrastructure management.

Keywords:
Graph databaseIT landscapeModel repositoriesModel-driven engineeringVersioning

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Area of Science:

  • Computer Science
  • Information Systems

Background:

  • IT landscape models represent complex real-world IT infrastructure, crucial for planning and analysis.
  • Maintaining these large, interconnected models is difficult due to size, complexity, and inadequate tool support.

Purpose of the Study:

  • To address challenges in managing IT landscape models.
  • To develop a scalable and flexible solution for IT infrastructure modeling.

Main Methods:

  • Combining domain-driven modeling with scalable graph-based repository technology.
  • Implementing a custom language for model-level queries.
  • Developing a comprehensive data management stack including transactions, queries, versioned persistence, and metamodel evolution.

Main Results:

  • A novel approach integrating domain-driven modeling and graph repositories.
  • An open-source repository implementation evaluated in a production industrial environment.
  • Comparative benchmark demonstrating effectiveness against state-of-the-art solutions.

Conclusions:

  • The proposed solution effectively addresses the challenges of IT landscape model management.
  • The integrated approach offers scalability, flexibility, and robust data management features.
  • The open-source implementation is validated in real-world industrial and benchmark settings.