Results 71 to 80 of about 4,358,705 (199)

A Weak Magnetic Anomaly Signal Enhancement Method Based on an Adaptive Variable-Structure Stochastic Resonance System

Modelling
Magnetic anomaly detection (MAD) is a passive technique for detecting ferromagnetic targets, but weak magnetic anomaly signals are often submerged in background noise.
Hexing Zheng, Jinguo Liu, Haitao Gu, Fang Shi, Kexin Zhang   +4 more
doaj   +1 more source

Deterministic Field‐Free Switching of Perpendicular Magnetization by Bulk Mirror Symmetry Broken Bi1−xSbx (012) with High Spin Hall Conductivity

Advanced Materials, EarlyView.
Crystal orientation and domain engineering enable bulk mirror symmetry breaking in Bi1−xSbx, resulting in ultralow current‐induced switching of perpendicular magnetization without an external field. By exploiting single‐domain Bi1−xSbx (012), the authors demonstrate an out‐of‐plane spin Hall conductivity of ∼1.12×105ℏ2eΩ−1m−1$ \sim \!1.12 \ensuremath ...
Seungwon Rho, Youngmin Lee, Jaeseok Huh, Jaehan Park, Hyeong‐Jun Son, Dowoo Pyeon, Mann‐Ho Cho   +6 more
wiley   +1 more source

Anomaly Detection Meta-Analysis Benchmarks

This article provides a thorough meta-analysis of the anomaly detection problem. To accomplish this we first identify approaches to benchmarking anomaly detection algorithms across the literature and produce a large corpus of anomaly detection benchmarks
Emmott, Andrew, Das, Shubhomoy, Wong, Weng-Keen, Fern, Alan, Dietterich, Thomas   +4 more
core   +6 more sources

Real-Time Localization of Magnetic Target Using Second-Order Scalar Magnetic Gradients

Sensors
Magnetic anomaly generated by magnetic target is widely used in many areas. In this paper, a real-time magnetic target localization method based on second-order scalar magnetic gradients at the closest point of approach (CPA) is proposed.
Nan Li, Menghui Qin, Leling Li, Liming Fan, Xiaoming Cao   +4 more
doaj   +1 more source

Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures

Advanced Materials, EarlyView.
A uniaxial moiré potential in misfit (MS)1+δTaS2 heterostructures selectively reshape charge order: the embedded 1H‐TaS2 layer hosts an incommensurate charge‐density wave, fragmented into nanometer domains and stripped of threefold symmetry. Superconductivity, however, remains uniform and fully gapped, revealing heterosymmetry stacking as a selective ...
Sandra Sajan, Laura Pätzold, Tarushi Agarwal, Clara Pfister, Haojie Guo, Sisheng Duan, P. V. Sruthibhai, Mariana Rossi, Maria N. Gastiasoro, Sara Barja, Ravi P. Singh, Tim Wehling, Miguel M. Ugeda   +12 more
wiley   +1 more source

Evolving discrete-valued anomaly detectors for a network intrusion detection system using negative selection

, 2006
Network intrusion detection is the problem of detecting unauthorised use of, or access to, computer systems over a network. One approach is anomaly detection, where deviations from a model of normal network activity are reported.
Powers, Simon T., He, Jun
core   +1 more source

Magnetic Heterodyne Target Proximal Distance Estimate Using Extended N-th-Pole Magnetic Dipole Model via Iterative Extended Kalman Filter

Sensors
Anti-collision detection technologies primarily rely on optical, radar, or laser sensors; however, their performance often deteriorates severely under adverse weather conditions (e.g., rain, snow, fog) or in scenarios involving visual occlusion.
Xuyi Miao, Yipeng Li, Zumeng Jiang, Shaojie Ma, He Zhang, Peng Liu, Keren Dai   +6 more
doaj   +1 more source

Anomaly Detection: theoretical analysis and investigation on the Isolation Forest method

, 2023
openQuesto lavoro di tesi si concentra sull’analisi teorica e l’implementazione pratica dell’ Anomaly detection, intesa come rilevamento di anomalie, tramite metodi di machine learning, per identificare eventi che risultano sospetti in relazione al ...
BRESSAN, ALBERTO
core  

Cooperative Goniopolar and Anomalous Nernst Transverse Thermoelectricity in Kagome Magnets

Advanced Materials, EarlyView.
A cooperative transverse thermoelectric mechanism is realized in kagome magnets, where axis‐dependent goniopolar effects and Berry curvature‐driven anomalous Nernst coexist within the same energy window. In MgMn6Sn6, this intrinsic synergy yields a record room‐temperature transverse thermopower of 15.6 µV K−1, establishing a general strategy for high ...
Honghui Wang, Xiaolong Feng, Haihua Hu, Xuemin Shi, Ralf Koban, Walter Schnelle, Wenzhi Peng, Dazhi Hou, Jianjun Ying, Bin He, Yu Pan, Xiaoyuan Zhou, Claudia Felser   +12 more
wiley   +1 more source

A high-precision edge detection technique for magnetic anomaly signals based on a self-attention mechanism

Frontiers in Earth Science
Magnetic data boundary detection is a key technology in potential field data processing, providing an effective basis for the division of geological units and fault structures.
Ju Haihua, Wang Li, Yang Jie, Liu Gaochuan, Xia Zhong, Jiao Jian, Zhang Le, Dai Bo   +7 more
doaj   +1 more source