Beijing Information Science & Technology University

Anti-parity-time-symmetric gyroscope via high-order exceptional points

Exceptional points (EPs), which arise from non-Hermitian systems, have been extensively investigated for the development of high-performance sensors. However, operating a non-Hermitian sensor at a high-order EP (HOEP) to achieve extreme performance requires strict and precise con...

Air-processed Cs3Bi2I9 polycrystalline film and self-powered photodetector

As a prototypical bismuth-based perovskite material, Cs 3 Bi 2 I 9 exhibits notable advantages including low toxicity and excellent environmental stability, rendering it a highly promising candidate for optoelectronic applications. However, the precise crystallization control of...

Spin-current-controlled anisotropic deformation of magnetic lump solitons

We investigate a (2+1)-dimensional nonlinear spin system containing an effective spin-current transport term. Based on its integrable structure, exact magnetic lump solutions are constructed on a rotating spin background, including both fundamental and higher-order configurations...

PGNN-Based Harmonic Source Localization in Distribution Networks

Accurate localization and quantification of multiple harmonic sources from limited synchronized measurements remain challenging in distribution networks. To address measurement noise, limited phasor measurement unit (PMU) deployment, and insufficient physical consistency in purel...

Product evolution model (PEM): a functional semantic knowledge-driven framework for product technology landscape construction

Purpose The construction of a product technology landscape remains heavily reliant on patent-based methods despite its recognized value in supporting the systematic product planning and technology opportunity identification. These patented approaches, however, are typically const...

Robust fault-tolerant control for wastewater treatment processes via integrated adaptive dynamic programming with fault-aware experience replay

Wastewater treatment is a crucial measure to address water scarcity and water pollution, and various control methods have been proposed for wastewater treatment processes (WWTPs). However, actuator faults can compromise existing control strategies and destabilize the system. In t...

Association between A Body Shape Index (ABSI) and mortality risk across populations with different sedentary time: a large-scale cohort study

A Body Shape Index (ABSI) is a simple and efficient metric for assessing adiposity, and sedentary behaviour is a common unhealthy practice. Both factors have been demonstrated to be associated with mortality risk. However, research on the influence of sedentary time on the associ...

Design and analysis of an underwater vectored thruster employing spherical actuator

Underwater vectored thruster is an important development direction for the propulsion system of autonomous underwater vehicles. However, conventional vectored thruster systems generally consist of multiple actuators and complex transmission structures, which results in large syst...

An efficient federated learning method based on the proportional-integral-derivative mechanism for embedded devices

For federated learning (FL) deployed on embedded devices, clients (embedded devices) face severe data skew and diverse hardware capabilities. This leads to both data and computational heterogeneity, and the level of heterogeneity varies from device to device. To address the above...

Anomaly Detection in Long-term Time Series with Transformer and Variational Autoencoder

Abstract Anomaly detection is crucial for ensuring system reliability and providing early warnings of potential failures. However, long-term time-series anomaly detection remains challenging because anomalous events are rare, anomaly patterns are diverse, and temporal dependencie...

Attention-based time–frequency aggregated tokens for sound event classification in basketball game

Abstract With the rapid advancement of computer technology, its application in basketball game analysis has become a prominent research focus. Sound events in basketball games encapsulate critical game-related information. However, research on sound event classification in basket...

Reactive PLD Guides the Transformation to Noncrystalline C‐Ga‐Se‐Cl Films with a Halogen‐Defined Interface for Enhanced Luminescence

ABSTRACT Pulsed laser deposition is known for copying the composition of a target into a thin film. Adding a reactive gas can change the growth process, but the chemistry usually stays close to the target. Using a carbon‑rich environment and a pulsed chlorine source from polyviny...

Enabling generalizable RUL prediction for equipment: a dual-dimensional continual learning approach based on deep Gaussian process

Abstract Accurately predicting Remaining Useful Life (RUL) is critical for the intelligent maintenance of high-end rotating machinery, which often operates under complex and variable conditions. However, conventional predictive models tend to degrade in performance when deployed...

Interface Contact Optimization via Phosphomolybdic Acid Enables 24.9% Efficiency in MoOX-Based Silicon Solar Cells

Abstract The development of cost-effective carrier-selective passivating contacts is critical for enhancing the commercial feasibility of silicon compound solar cells. Molybdenum oxide (MoO X ) has garnered considerable interest as a promising hole transport layer (HTLs). A key a...