China University of Mining and Technology

A Novel Hybrid Active-Passive Neutral-Point-Clamped Multilevel Conversion Topology

This paper presents a novel multilevel neutral-point-clamped (NPC) topology featuring a combination of active (transistor) and passive (diode) clamping. The topology leverages the main benefits of both purely-passive and purely-active NPC topologies. It allows concentrating switc...

A case study on vision-based measurement of transverse vibration displacements of multiple hoisting ropes in a mine

This paper presents a case study of vision-based transverse vibration measurement of multiple hoisting ropes on an operational mine hoist. Based on field image data, we propose a multi-point vision measurement method. The method adds a reference line to an image sequence using di...

Numerical study on instability of rock structural planes induced by stress disturbances

<title>Abstract</title> The activities in deep underground engineering may induce variations in the stress state of the rock, increasing the risk of engineering disasters. The decrease in normal stress <italic>σ</italic>_n and the increase in shear stress <italic>τ</ita...

Validation Study on Fault Diagnosis of Elevator Traction Drive Systems Based on Public Motor-Drive Data and Multimodal Signal Analysis

To address the difficulty of obtaining real fault data from elevator traction drive systems and the potential overestimation caused by random window splitting, this study uses two public motor-drive datasets to examine how validation protocols, signal modalities, and noise condit...

A Configurable and Highly Efficient NTT/INTT/PWM Unit for CRYSTALS-Kyber and CRYSTALS-Dilithium

CRYSTALS-Kyber and CRYSTALS-Dilithium are representative lattice-based post-quantum cryptographic schemes, where number theoretic transform (NTT), inverse NTT (INTT), and point-wise multiplication (PWM) dominate polynomial arithmetic. Existing hardware accelerators are typically...

Study on the Intelligent Recognition Algorithm for Open-Pit Mine Slope Fissures: Crack-YOLO with Texture and Semantic Enhancement

Rock fissure parameters, such as length, width, and density, are essential for analyzing the progressive instability of open-pit mine slopes. Under the combined effects of engineering disturbance, geological conditions, and environmental factors, slope fissures continuously propa...

Visibility Prediction and Diagnostic Interpretation Based on Comparative Modelling for Sustainable Urban Environmental Management: A Chengdu Study from November 2021 to October 2024

Reliable visibility forecasting is important for transportation safety and sustainable urban environmental management, particularly in the Sichuan Basin, where poor visibility remains a persistent concern. This study developed a comparative diagnostic framework for one-day-ahead...

DASTNet-X: an explainable dual-attention based spatio-temporal network for arrhythmia classification

Deep learning (DL) models have demonstrated strong performance in electrocardiography (ECG) arrhythmia classification. However, the criteria and processes for selecting ECG samples for analysis are often unclear. This lack of transparency, together with the challenge of interpret...

Coupling Landscape Patterns and Ecosystem Services With Sustainable Development Goals for Regional Sustainability: Evidence From the Yellow River Basin

ABSTRACT Human activities are accelerating ecosystem degradation, making regional sustainability transitions increasingly urgent. Although the United Nations Sustainable Development Goals (SDGs) provide a unified global framework for action, their implementation at the regional s...

Coupled Evolution of Coal Damage–Permeability–MechanicalResponse Induced by Alternating N2/CO2 Injection

Abstract To reveal the coupled evolution of coal damage–permeability–mechanical response during alternating N2/CO2 injection (ANI), a thermo-hydro-mechanical-damage (THMD) fully coupled model incorporating three distinct damage mechanisms (stress-induced, temperature-induced, and...

Methane Capture and Hydrogen Production from Coal Mine Methane: A Sustainable Path for Energy Transition

Methane emissions from coal mines pose significant environmental and operational challenges. Methane can be released from coal seams and surrounding rock layers as a result of mining operations. These emissions pose environmental risks and can lead to fire and explosion hazards....

Efficient 3D Transient Electromagnetic Model Order Reduction Inversion for Arbitrary Transmitter Waveforms Based on Convolution

Three-dimensional inversion of airborne transient electromagnetic (ATEM) data is computationally demanding because it requires repeated forward simulations and sensitivity calculations. Previous Krylov-subspace studies have substantially improved the efficiency of three-dimension...

KG-MS-ResNet: A Knowledge-Guided Multi-Scale Attention Residual Network for Cultivated Land Change Monitoring

Abstract. Cultivated land conversion to built-up area is the core form of farmland non-agriculturalization and the main threat to farmland protection. China has strict requirements for safeguarding farmland security and holding the 1.8-billion-mu farmland red line. However, curre...

A Microseismic Energy Field Distribution Prediction Method Guided by Geological Structure Priors

Existing microseismic prediction methods commonly incorporate domain prior knowledge as ordinary input features, which makes it difficult to fully exploit its structural constraints and physical implications. To address this limitation, this study proposes a geological-structure-...

Mechanical responses, failure behaviours and stability of soft–hard interbedded antidip slopes under various degrees of anisotropy

Purpose This study was aimed at investigating the mechanical responses and failure characteristics of soft–hard interbedded rock samples under uniaxial compression and Brazilian splitting tests with varying strength ratios between the hard and soft layers (i.e. anisotropy degrees...

Experimental and Numerical Study on the Pyrolysis Pathways of C7H3F13O in Simulated Battery Immersion System

This study investigates the high-temperature pyrolysis pathways and product distribution of the battery immersion coolant HFE-7300 (C7H3F13O) within a simulated thermal runaway environment. Using a tube furnace system combined with GC-MS analysis across a temperature range of 300...

Institutional complexity and entrepreneurial work in grassroots cultural heritage: Evidence from Hanfu entrepreneurship in China

Abstract Cultural heritage entrepreneurship (CHE) often requires entrepreneurs to reconcile authenticity claims with commercial imperatives. This challenge is especially pronounced in grassroots heritage revivals where heritage meanings are contested and cultural authority is une...

Nonmetallic plasmonic Al-doped W18O49 drives pure CO production from formic acid dehydration

As a vital industrial feedstock, carbon monoxide (CO) is widely employed in pharmaceutical, electronic and fine chemical synthesis, yet its efficient production in high purity remains challenging. Here we report a solar-driven route to high-purity CO from formic acid using a nonm...

One‐Pot Direct Recycling of Spent LiCoO 2 via Synergistic Binder Defluorination and Phase Reconstruction

ABSTRACT Direct recycling of spent lithium‐ion battery cathodes is hindered by two interdependent challenges: persistent polyvinylidene fluoride (PVDF) binder residues that block particle surfaces and incomplete structural repair of degraded layered phases. Here, we report a one‐...

Willingness to accept local CAFO development: actual water quality information and rural residents’ preferences for means of compensation

Concentrated animal feeding operations (CAFOs) provide low-cost products but often face local opposition due to environmental externalities. Based on a two-time panel discrete choice experiment (DCE) of rural residents living near CAFOs in China, this study quantifies how water q...