Positive Rational Numbers of the Form φ(m2)/φ(n2)
Abstract–In this note, we show that each positive rational number can be written uniquely as φ(m2)/φ(n2), where m, n∈N, with some natural restrictions on gcd(m,n).
Near-Visible Fiber Sensing Tandem Exploiting Single-Pulse Modulated Harmonic …
Near-visible fiber Bragg grating finds myriad of applications such as quantum sensing, biomedical detection, and portable fiber probe. However, handling the requirements of flexibility, efficiency,…
A Fully Numerical Method for Designing Efficient Adiabatic Mode Evolution Str…
A fully numerical method for designing efficient adiabatic mode evolution structure (AMES) (referred to as NAMES) is introduced, which can be applied to adiabatic taper, coupler, splitter, mode con…
NAS-FAS : Static-Dynamic Central Difference Network Search for Face Anti-Spoo…
Face anti-spoofing (FAS) plays a vital role in securing face recognition systems. Existing methods heavily rely on the expert-designed networks, which may lead to a sub-optimal solution for FAS tas…
Semi-Supervised Clustering With Constraints of Different Types From Multiple …
Semi-supervised clustering is one of important research topics in cluster analysis, which uses pre-given knowledge as constraints to improve the clustering performance. While clustering a data set,…
A 1.4-kW Mode-Controllable Fiber Laser System
We demonstrated a mode-controllable fiber laser system with output power of 1.4 kW level. The system consists of a kilowatt-scale master oscillator power amplifier and an active feedback control sy…
Adversarial Metric Attack and Defense for Person Re-Identification
Person re-identification (re-ID) has attracted much attention recently due to its great importance in video surveillance. In general, distance metrics used to identify two person images are expecte…
Fast Acquirable Brillouin Optical Time-Domain Reflectometry Based on Bipolar-…
In this article, fast measurement of Brillouin optical time-domain reflectometry (BOTDR) based on a linearly frequency modulated (LFM) pulse and a digital matched filter is studied theoretically an…
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