Search Results - Fan ZHANG

Aiming at the problems of low visibility, fuzzy target features and high leakage rate of small targets in nighttime vehicle detection, this paper proposes a nighttime vehicle detection algorithm E-YOLOv7 based on the improved YOLOv7. Firstly, a hybrid feature enhancement module (SFE) is designed to...

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Macroscopic examination, microstructural analysis and mechanical properties test were carried out on the leak tube of 12Cr1MoV rear platen superheater and its adjacent sections in a power plant. Results showed that there was no obvious thinning at the blasting mouth and there were many axial cracks...

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With the research and development of deep learning theory, object detection technology based on deep learning has made significant progress in the field of intelligent mining，which has become a typical paradigm and research hotspot of artificial intelligence technology in coal mining application sce...

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Urban green spaces (UGSs) and forests play a vital role in shaping sustainable and livable cities, offering not only ecological benefits but also spaces that are essential for human well-being, social interactions, and everyday life. Understanding the landscape features that resonate most with publi...

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To understand the nitrate reduction process on the (101) surface of anatase TiO2-x, two surface models one with oxygen vacancies and one without are established. Density functional theory calculations are then employed to reveal the effects of oxygen vacancy on the surface electronic structure, nitr...

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The anisotropic Au nanostars exhibit superior local electric field enhancement than their counterparts. Their longitudinal localized surface plasmon resonance (LSPR) wavelengths can be adjusted from visible to near infrared regions through morphological control. This review systematically synthesize...

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Formal credit is critical in agricultural production, allowing more expenditure and productive input, thereby improving farmers’ welfare. In pastoral China, formal financial institutions are gradually increasing. However, a limited understanding remains of how formal credit affects herders’ househol...

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A tunable dual-band metamaterial filter based on crossed split-ring resonators is numerically and experimentally demonstrated. The proposed tunable metamaterial filter consists of two same metal split rings with different angles. Based on the cross-coupling between these two split rings, two stopban...

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To address the challenge that the perceptual evaluation dimensions of lacquer-wood furniture cultural relics imitations are inherently abstract and challenging to quantify, this study established a systematic perceptual evaluation framework to support the high-quality and large-scale development of...

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With the increasing demand for optical fiber switching technologies from data center networks, shutter-based free-space optical fiber switching technology is promising for such network applications as the major advantages of this switching technology are that multicast switching, which is a vital fu...

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High-precision weld positioning is crucial for enhancing welding quality and structural reliability. Current algorithms are challenged by uneven laser reflectivity, complex surface curvature, and noise interference. To overcome these obstacles, we propose a multi-stage adaptive weld centering framew...

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Due to the narrow underground environment of coal mine, dark and changeable light, the mine image has the characteristics of low illumination, low contrast map and uneven color, which affects the matching result of visual SLAM feature points extraction and makes the positioning performance drop shar...

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Dual polarimetric SAR is capable of reflecting the biophysical and geometrical information of terrain with open access data availability. When it is combined with time-series observations, it can effectively capture the dynamic evolution of scattering characteristics of crops in different growth cyc...

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The absolute radiometric calibration of synthetic aperture radar (SAR) using natural point targets holds significant potential. Current natural point targets for calibration are often insufficiently concentrated within a single imaging scene, leading to calibration uncertainty. These targets also ex...

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BackgroundTuberculosis (TB), an infectious disease caused by Mycobacterium tuberculosis, remains a major global public health challenge, particularly in developing countries. Despite a global reduction in TB incidence from 2015 to 2020, the disease continues to be prevalent, with 9.4 million new cas...

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Background: Cognitive decline poses a significant challenge to healthy aging. While exercise is widely recognized for its cognitive benefits, the comparative efficacy of different exercise modalities and optimal intervention protocols for specific cognitive domains in older adults remains unclear.Ob...

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Intelligent unmanned mining of coal mine is the technological development trend of green, intelligent and safe mining of coal resources. High-resolution mine images can provide key technical support for intelligent unmanned mining of coal mine. Aiming at the degradation phenomenon of mine images, in...

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Sucrose non-fermenting-1 related protein kinase 2 (SnRK2) is a unique family of protein kinases associated with abiotic stress signal transduction in plants. In this study, a maize SnRK2 gene ZmSnRK2.11 was cloned and characterized. The results showed that ZmSnRK2.11 is up-regulated by high-salinity...

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ABSTRACT Background Mitochondria have been linked with inflammatory colorectal cancer (CRC) development; however, the association between mitochondria‐related genes (MRGs) and CRC remains unknown. Aims To explore the causal relationship between MRGs and CRC, screen prognostic genes, conduct drug pre...

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BackgroundAlthough current guidelines have recommended finerenone as a first-line agent for patients with diabetic kidney disease (DKD), it is unclear what effect finerenone has on all-cause and cardiovascular mortality. This study aimed to assess the impact of finerenone on the prognosis and safety...

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