Abstract The ceramic composites BaTiO 3 @Ni, composed of a conducting nickel and highly resistive ferroelectric phase, exhibiting positive temperature coefficient electrical resistivity (PTCR), are prepared using conventional method at less than 1000 °C. @Ni show jump-like PTCR effect in by about eight orders magnitude ( ρ max / min ≈ 10 8 ) with < 1 Ωcm. This is the first example standard e...

Weyl Anomaly in the dilaton-scalar system in 2 dimensional gravity is examined. Discrepancy in recent results by some authors is clarified. We take the heat-kernel regularization for the ultraviolet divergences. In the present approach, the Weyl anomaly depends on the choice of an 2nd order differetial operator for the regularization. We have the freedom of its choice due to the arbitrariness o...

The γ-trace anomaly of supersymmetry current in a supersymmetric gauge theory shares a superconformal anomaly multiplet with the chiral R-symmetry anomaly and the Weyl anomaly, and its holographic reproduction is a valuable test to the AdS/CFT correspondence conjecture. We investigate how the γ-trace anomaly of the supersymmetry current of N = 1 four-dimensional su-persymmetric gauge theory in ...

Software components can be implemented and distributed as collections of classes, then adapted to the needs of specific applications by means of subclassing. Unfortunately, subclassing in collections of related classes may require re-implementation of otherwise valid classes just because they utilize outdated parent classes, a phenomenon that is referred to as the subclassing anomaly. The subcl...

Anomaly detection is a key element of intrusiondetection and other detection systems in which perturbations of normal behavior suggest the presence of intentionally or unintentionally induced attacks, faults, defects, etc. Because most anomaly detectors are based on probabilistic algorithms that exploit the intrinsic structure, or regularity, embedded in data logs, a fundamental question is whe...

Research into network anomaly detection has become crucial as a result of a significant increase in the number of computer attacks. Many approaches in network anomaly detection have been reported in the literature, but data or solutions typically are not freely available. Recently, a labeled network traffic flow dataset, Kyoto2006+, has been created and is publicly available. Most existing appr...

A density anomaly, i.e. a temperature region with negative thermal expansion (NTE) bounded by maximum and minimum at lower temperatures, is revealed characterised in tantala for the first time Molecular Dynamics simulations. The NTE evidenced metastable supercooled liquid rather close to glass transition. Since suppressed poor structural equilibration, highlighting these phenomena highly challe...