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Related Concept Videos

Equivalent Circuits for Practical Transformers01:28

Equivalent Circuits for Practical Transformers

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The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
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Second Order systems II01:18

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In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
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Characteristics of Practical Op Amps01:16

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A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
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First-order systems, such as RC circuits, are foundational in understanding dynamic systems due to their straightforward input-output relationship. Analyzing their responses to different input functions under zero initial conditions reveals significant insights into system behavior.
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Second Order systems I01:20

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A servo system exemplifies a second-order system, featuring a proportional controller and load elements that ensure the output position aligns with the input position. The relationship between these components is described by a second-order differential equation. Applying the Laplace transform under zero initial conditions yields the transfer function, showing how inputs are converted to outputs in the system.
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Related Experiment Video

Updated: Feb 16, 2026

A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer SMPS-ICPMS
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Practical and secure telemedicine systems for user mobility.

Fatemeh Rezaeibagha1, Yi Mu1

  • 1Institute of Cybersecurity and Cryptology, School of Computing and Information Technology, University of Wollongong, NSW 2522, Australia.

Journal of Biomedical Informatics
|December 31, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces novel secure protocols for telemedicine, enhancing remote healthcare delivery. These protocols ensure patient privacy, data integrity, and user mobility in digital health communications.

Keywords:
AnonymityAuthenticationMobilitySecurityTelemedicine

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Area of Science:

  • Health Informatics
  • Cybersecurity
  • Telemedicine

Background:

  • Wireless devices have improved telemedicine care delivery, especially for remote patients.
  • Securing telemedicine systems against privacy and mobility challenges remains a significant hurdle.
  • Existing systems often struggle to balance security with user mobility and patient confidentiality.

Purpose of the Study:

  • To present novel secure protocols for telemedicine systems.
  • To ensure secure communication between geographically dispersed patients and healthcare providers.
  • To address the challenges of user mobility and patient privacy in telemedicine.

Main Methods:

  • Development of several secure protocols based on symmetric-key schemes.
  • Integration of features for confidentiality, mutual authentication, anonymity, data integrity, and communication freshness.
  • Focus on capturing user mobility and patient privacy requirements.

Main Results:

  • Protocols offer confidentiality of patient information and patient anonymity.
  • Ensured mutual authentication, data integrity, and freshness of communication.
  • Successfully captured user mobility and patient privacy in telemedicine systems.

Conclusions:

  • The proposed protocols provide a comprehensive solution for secure telemedicine.
  • Symmetric-key based protocols are efficient and meet all desirable security requirements.
  • This work advances secure and private remote healthcare delivery.