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IMTNet: Improved Multi-Task Copy-Move Forgery Detection Network with Feature Decoupling and Multi-Feature Pyramid

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Computers, Materials and Continua 2024年第3期80卷 4603-4620页

作者： Wang H. Jiang z. qian Q. Long Y. School of Information Guizhou University of Finance and Economics Guiyang 550025 China College of Big Data Statistics Guizhou University of Finance and Economics Guiyang 550025 China

Copy-Move Forgery Detection (CMFD) is a technique that is designed to identify image tampering and locate suspicious areas. However, the practicality of the CMFD is impeded by the scarcity of datasets, inadequate quality and quantity, and a narrow range of applicable tasks. These limitations significantly restrict the capacity and applicability of CMFD. To overcome the limitations of existing methods, a novel solution called IMTNet is proposed for CMFD by employing a feature decoupling approach. Firstly, this study formulates the objective task and network relationship as an optimization problem using transfer learning. Furthermore, it thoroughly discusses and analyzes the relationship between CMFD and deep network architecture by employing resNet-50 during the optimization solving phase. Secondly, a quantitative comparison between fine-tuning and feature decoupling is conducted to evaluate the degree of similarity between the image classification and CMFD domains by the enhanced resNet-50. Finally, suspicious regions are localized using a feature pyramid network with bottom-up path augmentation. Experimental results demonstrate that IMTNet achieves faster convergence, shorter training times, and favorable generalization performance compared to existing methods. Moreover, it is shown that IMTNet significantly outperforms fine-tuning based approaches in terms of accuracy and F1 Copyright © 2024 The Authors. Published by Tech Science Press.

关键词： feature decoupling Image copy-move detection multi-scale feature pyramids passive forensics

Characteristics of the HIV/AIDS Epidemic among People Aged≥50 Years in China during 2018–2021

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Biomedical and Environmental Sciences 2024年第4期37卷 399-405页

作者： HOU Yu Shan JIN Yi Chen CAI Chang TANG Hou Lin QIN qian qian LYU Fan National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China

Objective This study aimed to determine the current epidemiological status of PLWHA aged≥50 years in China from 2018 to *** also aimed to recommend targeted interventions for the prevention and treatment of HIV/AIDS in elderly *** Data on newly reported cases of PLWHA,aged≥50 years in China from 2018 to 2021,were collected using the *** tests and spatial analyses were also *** Between 2018 and 2021,237,724 HIV/AIDS cases were reported among patients aged≥50 years in *** main transmission route was heterosexual transmission(91.24%).Commercial heterosexual transmission(CHC)was the primary mode of transmission among males,while non-marital non-CHC([NMNCHC];60.59%)was the prevalent route in *** proportion of patients with CHC decreased over time(z=67.716,Preased(z=153.05,Pratio varied among the different modes of infection,and it peaked at 17.65 for *** spatial analysis indicated spatial clustering,and the high-high clustering areas were mainly distributed in the southwestern and central-southern *** In China,PLWHA,aged≥50 years,were predominantly infected through heterosexual *** primary modes of infection were CHC and *** were variations in the sex ratio among different age groups,infected through various sexual ***/AIDS cases exhibited spatial *** on these results,the expansion of HIV testing,treatment,and integrated behavioral interventions in high-risk populations is recommended to enhance disease detection in key regions.

关键词： HIV/AIDS Aged≥50 years China

Vasculopathy in dermatomyositis

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Chinese Medical Journal 2024年第2期137卷 247-249页

作者： Hui Xu Jie qian Department of rheumatology Affiliated Hospital of Nantong UniversityNantongJiangsu 226001China

To the Editor:Dermatomyositis(DM)is a rare autoimmune disease characterized by specific cutaneous manifestations and proximal muscle weakness,in which abnormalities of nailfold capillary(NFC)and serum levels of vascular biomarkers are *** changes in vascular lesions play an important role in the occurrence and development of DM and reflect the disease activity and treatment *** to the diversity of clinical manifestations in DM patients,vascular involvement is often under-evaluated,causing the treatment of refractory vascular damage *** review aims to explore the mechanisms,clinical manifestations,and treatment options of vasculopathy in DM to achieve early recognition and improve prognosis.

关键词： involvement clinical myositis

Proton‑Prompted Ligand Exchange to Achieve High‑Efficiency CsPbI_(3) Quantum Dot Light‑Emitting Diodes

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Nano-Micro Letters 2024年第6期16卷 53-62页

作者： Yanming Li Ming Deng Xuanyu zhang Lei qian Chaoyu Xiang Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315300People’s Republic of China Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China zhejiang Provincial Engineering research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211ZhejiangPeople’s Republic of China University of Nottingham Ningbo China Ningbo 315100People’s Republic of China

CsPbI_(3)perovskite quantum dots(QDs)are ideal materials for the next generation of red light-emitting ***,the low phase stability of CsPbI_(3)QDs and long-chain insulating capping ligands hinder the improvement of device *** in-situ ligand replacement and ligand exchange after synthesis were often difficult to ***,we proposed a new ligand exchange strategy using a proton-prompted insitu exchange of short 5-aminopentanoic acid ligands with long-chain oleic acid and oleylamine ligands to obtain stable small-size CsPbI_(3)*** exchange strategy maintained the size and morphology of CsPbI_(3)QDs and improved the optical properties and the conductivity of CsPbI_(3)QDs *** a result,high-efficiency red QD-based light-emitting diodes with an emission wavelength of 645 nm demonstrated a record maximum external quantum efficiency of 24.45%and an operational half-life of 10.79 h.

关键词： CsPbI_(3) perovskite quantum dots Light-emitting diodes Ligand exchange Proton-prompted in-situ exchange

root-derived long-distance signals trigger ABA synthesis and enhance drought resistance in Arabidopsis

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Journal of Genetics and Genomics 2024年第7期51卷 749-761页

作者： qian-qian Liu Jin-Qiu Xia Jie Wu Yi Han Gui-Quan zhang Ping-Xia zhao Cheng-Bin Xiang Division of Life Sciences and Medicine Division of Molecular&Cell BiophysicsHefei National Science Center for Interdisciplinary Sciences at the MicroscaleUniversity of Science and Technology of ChinaThe Innovation Academy of Seed DesignChinese Academy of SciencesHefeiAnhui 230027China College of Life Sciences Anhui Agricultural UniversityHefeiAnhui 230036China College of Agronomy South China Agricultural UniversityGuangzhouGuangdong 510642China School of Biology and Basic Medical Sciences Soochow UniversitySuzhouJiangsu 215123China

Vascular plants have evolved intricate long-distance signaling mechanisms to cope with environmental stress,with reactive oxygen species(rOS)emerging as pivotal systemic signals in plant stress ***,the exact role of rOS as root-to-shoot signals in the drought response has not been *** this study,we reveal that compared with wild-type plants,ferric reductase defective 3(frd3)mutants exhibit enhanced drought resistance concomitant with elevated NINE-CIS-EPOXYCArOTENOID DIOXYGENASE 3(NCED3)transcript levels and abscisic acid(ABA)contents in leaves as well as increased hydrogen peroxide(H_(2)O_(2))levels in roots and *** experiments distinctly illustrate that drought resistance can be conferred by the frd3 rootstock regardless of the scion genotype,indicating that long-distance signals originating from frd3 roots promote an increase in ABA levels in ***,the drought resistance conferred by the frd3 mutant rootstock is weakened by the CAT2-overexpressing scion,suggesting that H_(2)O_(2)may be involved in long-distance ***,the results of comparative transcriptome and proteome analyses support the drought resistance phenotype of the frd3 *** together,our findings substantiate the notion that frd3 root-derived long-distance signals trigger ABA synthesis in leaves and enhance drought resistance,providing new evidence for root-to-shoot long-distance signaling in the drought response of plants.

关键词： frd3 Drought resistance root-to-shoot long-distance signals reactive oxygen species(rOS) H_(2)O_(2) Iron ABA

Progress in manipulating spin polarization for solar hydrogen production

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Materials reports(Energy) 2024年第1期4卷 43-57页

作者： qian Yang Xin Tong zhiming Wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054PR China Yangtze Delta region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001PR China Institute for Advanced Study Chengdu UniversityChengdu 610106PR China

Photocatalytic and photoelectrochemical water splitting using semiconductor materials are effective approaches for converting solar energy into hydrogen *** the past few years,a series of photocatalysts/photoelectrocatalysts have been developed and optimized to achieve efficient solar hydrogen *** various optimization strategies,the regulation of spin polarization can tailor the intrinsic optoelectronic properties for retarding charge recombination and enhancing surface reactions,thus improving the solar-to-hydrogen(STH)*** review presents recent advances in the regulation of spin polarization to enhance spin polarized-dependent solar hydrogen evolution ***,spin polarization manipulation strategies of several typical photocatalysts/photoelectrocatalysts(e.g.,metallic oxides,metallic sulfides,non-metallic semiconductors,ferroelectric materials,and chiral molecules)are *** the end,the critical challenges and perspectives of spin polarization regulation towards future solar energy conversion are briefly provided.

关键词： Spin polarization Solar energy conversion Photocatalytic hydrogen production Photoelectrochemical water splitting

A large language model-powered literature review for high-angle annular dark field imaging

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CHINESE PHYSICS B 2024年第9期33卷 76-81页

作者： Yuan, Wenhao Peng, Cheng He, qian Natl Univ Singapore Coll Design & Engn Dept Mat Sci & Engn 9 Engn Dr 1EA 03-09 Singapore 117575 Singapore Natl Univ Singapore Ctr Hydrogen Innovat E81 Engn Dr 3 Singapore 117580 Singapore

High-angle annular dark field (HAADF) imaging in scanning transmission electron microscopy (STEM) has become an indispensable tool in materials science due to its ability to offer sub-& Aring; resolution and provide chemical information through z-contrast. This study leverages large language models (LLMs) to conduct a comprehensive bibliometric analysis of a large amount of HAADF-related literature (more than 41000 papers). By using LLMs, specifically ChatGPT, we were able to extract detailed information on applications, sample preparation methods, instruments used, and study conclusions. The findings highlight the capability of LLMs to provide a new perspective into HAADF imaging, underscoring its increasingly important role in materials science. Moreover, the rich information extracted from these publications can be harnessed to develop AI models that enhance the automation and intelligence of electron microscopes.

关键词： large language models high-angle annular dark field imaging deep learning 87.64.Ee 84.35.+i 87.64.mf 01.30.-y TrANSMISSION ELECTrON-MICrOSCOPY BIMETALLIC PTSN CATALYSTS PrOPANE DEHYDrOGENATION STEM

EzH2 is a prognostic factor associated with tumor stemness and immune infiltration in skull base chordoma

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Genes & Diseases 2024年第5期11卷 85-87页

作者： qian Liu Mingxuan Li Yujia Xiong Yutao Shen Tianshun Ma Tianhao zhang Xiaohong r.Yang Yazhuo zhang Jiwei Bai Beijing Neurosurgical Institute Capital Medical UniversityBeijing 100070China Department of Neurosurgery Beijing Tiantan HospitalCapital Medical UniversityBeijing 100070China Division of Cancer Epidemiology and Genetics National Cancer InstituteNIHDHHSBethesdaMD 20892USA

Enhancer of zeste homolog 2(EzH2),an epigenetic regulator that inhibits transcription primarily through trimethylation of Lys-27 in histone 3(H3K27me3),has been reported to play an important role in the regulation of cell cycle,autophagy,and apoptosis,and DNA damage repair.1 EzH2 is highly expressed in a variety of cancers including prostate cancer,breast cancer,and renal clear cell carcinoma,and is associated with adverse prognosis.1 Moreover,it has been reported that EzH2 might increase tumor stemness and metastasis capacity and inhibit antitumor immunity by affecting T cells,NK cells,macrophages,and immune checkpoints.2,3 However,the prognostic value and the mechanism of EzH2 have not been investigated in *** this study,rNA sequencing and whole genome sequencing data based on 48 skull base chordomas as well as immunohistochemistry of paraffin sections were analyzed to elucidate the role of EzH2 in skull base *** found copy number gain mediated high EzH2 expression is associated with tumor stemness,M2 macrophage infiltration,and adverse prognosis in ***,we demonstrated that EzH2 promotes the proliferation,migration,and invasion of chordoma cells in in vitro cell experiments.

关键词： EzH2 immunity invasion

Flexible high-rise apartments with sparse wall-frame structure:A data-driven computational approach

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Frontiers of Architectural research 2024年第3期13卷 639-649页

作者： Hao Hua Ludger Hovestadt qian Wang School of Architecture Southeast UniversityNanjing 210096China Chair of Digital Architectonics ETH ZürichZürich 8093Switzerland Shanghai Huihuajia Software Technology Co. Ltd.Shanghai 200082China

Flexible housing resolves the fundamental conflicts between the long-standing structure and the evolving *** propose a computational method of optimizing the structural layout of high-rise residential *** high-rise apartment buildings have widely employed shear wall-frame structure in which one big room or multiple small rooms could occupy the same *** multiple floor plans into a fixed sparse scheme of shear walls and columns is *** developed a computational framework to seek flexible structural schemes.A building scheme consists of a circulation core,shear walls,columns,and *** computer program automatically adapts floor plans to any drawn or generated *** on a large dataset of apartment layouts,the number of apartments that fit into a building scheme statistically reflects the flexibility of the *** many hypothetical plans can fit into a wallframe structure in computer simulation,this structure could probably support several generations of unknown *** a data-driven computational method provides the possibility of creating a one-to-many mapping between permanent structure and evolving apartment plans.

关键词： Flexible housing High-rise apartment Data driven Computational design Wall-frame structure