Search Results - Lei Zhang

To address the challenges in ship plate detection under complex maritime scenarios—such as small target size, extreme aspect ratios, dense arrangements, and multi-angle rotations—this paper proposes a multi-module collaborative detection algorithm, RT-DETR-HPA, based on an enhanced RT-DETR framework...

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Aberration-corrected focus scanning is crucial for high-precision optics, but the conventional optical systems rely on bulky and complicated dynamic correctors. Recently, Shiyi Xiao's group proposed a method using two rotating cascaded transmissive metasurfaces for adaptive aberration correctio...

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Salvia officinalis is an important dietary supplement that is widely used as a flavor regulator and plays an important role in the prevention and treatment of neurodegenerative diseases. Salvia miltiorrhiza Bunge is a famous Chinese herbal medicine for treating cardiovascular diseases. Secondary met...

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Non-local vegetables have become a crucial source of vegetable supply for major cities, establishing stable production-marketing linkage mechanisms between large cities and external vegetable-producing regions is now imperative. Existing research has primarily examined, from a static perspective, th...

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This article was written in early December 2013,combined with the historical development andthe latest data on the Chinese Petroleum carried SWOT- analysis. This paper discusses corporate resources, cost, management and external factorssuch as the political environment and the marketsupply and deman...

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It has been found in several studies and research that the long non-coding RNA (Inc RNA) NEAT1 plays an important role in the development and succession in various malignant tumour. The development and metastasis of tumour mainly happen through lymph node. The purpose of this research is to explore...

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In recent years, UAV formations have garnered significant attention in fields such as reconnaissance, communications, and transportation. This paper aims to design an efficient passive localization method for UAV formations that satisfies system electromagnetic compatibility (EMC) requirements. A se...

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Frost heave in positive permafrost is a critical factor leading to frost damage of engineering in the cold region. The frost heave process results from the dynamic interaction of hydro-thermal forces. In an open system, factors such as temperature, temperature gradient, water content, and water supp...

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Abstract. The ideal characteristics of herbs can be summarized as a high content of secondary metabolites, high stress resistance, desirable shape, and high yield. In this study, 2 strategies are proposed for decoding the biogenesis and quality formation mechanisms of active ingredients and targets...

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The Kuroshio Extension front (KEF) considerably influences the underwater acoustic environment; however, a knowledge gap persists regarding the acoustic predictions under the ocean front environment. This study utilized the high-resolution ocean reanalysis data (JCOPE2M, 1993–2022) to assess the imp...

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To satisfy the stringent accuracy requirement of maintenance for repeat ground-track (RGT) orbits, a differential algebra-based semi-analytical method is proposed for the orbit design and control while considering high-fidelity geopotential dynamics with the effects of realistic perturbations, inclu...

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Finite background solitons are a significant area of research in nonlinear dynamics, as they are commonly found in various complex physical systems. Understanding how finite background solitons are generated and determining the conditions required for their excitation is crucial for detecting and ap...

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Seismic imaging in areas with complex geological structures, such as steeply dipping strata and lateral velocity variations, remains a significant challenge in geophysical exploration. In this paper, a Kirchhoff pre-stack depth and pre-stack time migration imaging method under the constraint of an i...

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Threshold Multi-Party Private Set Intersection (TMP-PSI) is a cryptographic protocol that enables an element from the receiver’s set to be included in the intersection result if it appears in the sets of at least <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" dis...

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BackgroundAtrial fibrillation (AF) is a complicated and varied cardiovascular disorder with inadequate understanding of its molecular underpinnings. While Programmed cell death factor 4 (PDCD4) has been associated in several illnesses, its particular significance in AF remains unknown. This work see...

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During cognitive tasks, older adults often show increased frontoparietal neural activity and functional connectivity. Cognitive reserve accrued from positive life choices like long-term musical training can provide additional neural resources to help cope with the effect of aging. However, the relat...

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BackgroundThis study investigates the use of CT radiomics combined with convolutional neural networks (CNN) to predict the malignancy of lung ground glass nodules (GGN), which are challenging to diagnose due to their ambiguous boundaries. The goal is to improve diagnostic accuracy and support person...

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<h4>Background</h4>This study aims to estimate the magnitude and changing trends of HIV, syphilis and HIV-syphilis co-infections among men who have sex with men (MSM) in China during 2003-2008 through a systematic review of published literature.<h4>Methodology/principal findings<...

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Objective: The interplay between calorie-dense food and chronic stress significantly accelerates obesity development, with neural circuits expressing Neuropeptide Y (NPY) in the central amygdala (CeA) emerging as the key mediator of this process. While these circuits are known to enhance hedonic fee...

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