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Related Concept Videos

Bewley Lattice Diagram01:12

Bewley Lattice Diagram

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The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
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Another way in which a group presence can affect performance is social loafing—the exertion of less effort by a person working together with a group. Social loafing occurs when our individual performance cannot be evaluated separately from the group. Thus, group performance declines on easy tasks (Karau & Williams, 1993). Essentially individual group members loaf and let other group members pick up the slack. Because each individual’s efforts cannot be evaluated,...
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Due to their highly strained structures, epoxides can readily undergo ring-opening reactions through nucleophilic substitution, either in the presence of an acid or a base. The nucleophilic substitution reactions in the presence of acid are called acid-catalyzed ring-opening reactions, and nucleophilic substitution reactions in the presence of a base are called base-catalyzed ring-opening reactions. Epoxides undergo base-catalyzed ring-opening reactions in the presence of a strong nucleophile...
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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Routh-Hurwitz Criterion II01:19

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In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
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Related Experiment Video

Updated: Oct 22, 2025

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
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Lattice-Based Logarithmic-Size Non-Interactive Deniable Ring Signatures.

Huiwen Jia1, Chunming Tang1, Yanhua Zhang2

  • 1School of Mathematics and Information Science, Guangzhou University, No. 230 Wai Huan Xi Road, Guangzhou 510006, China.

Entropy (Basel, Switzerland)
|August 27, 2021
PubMed
Summary

We introduce an efficient deniable ring signature scheme. This cryptographic method allows anonymous signing while enabling verification of involvement, offering enhanced security and privacy for real-world applications.

Keywords:
accumulatorsdeniable ring signaturezero-knowledge protocols

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Area of Science:

  • Cryptography
  • Computer Science

Background:

  • Deniable ring signatures offer anonymous message signing with optional verifier-based confirmation or disavowal of involvement.
  • This cryptographic primitive has significant real-world application potential due to its unique features.

Purpose of the Study:

  • To propose an efficient deniable ring signature scheme.
  • To achieve a logarithmic signature size relative to the ring's cardinality.

Main Methods:

  • Adaptation of Libert et al.'s zero-knowledge argument system (Eurocrypt 2016).
  • Utilizing the Fiat-Shamir transformation to achieve non-interactivity.
  • Security analysis based on the small integer solution (SIS) assumption in the random oracle model.

Main Results:

  • An efficient deniable ring signature scheme with a signature size logarithmic to the ring's cardinality.
  • The proposed scheme ensures anonymity, traceability, and non-frameability.

Conclusions:

  • The developed scheme provides an efficient and secure solution for deniable ring signatures.
  • It enhances privacy and accountability in cryptographic systems.