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Modeling,Analysis and Validation of Friendship Paradox in Evolving Networks

China Communications 2025年第1期22卷 216-234页

作者： Xu Jiasheng Fu Luoyi Xu Zhiying ding jiaxin Zhou Lei Wang Xinbing Zhou Chenghu Department of Electronic Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China

Friendship paradox states that individuals are likely to have fewer friends than their friends do,on *** of its wide existence and appealing applications in real social networks,the mathematical understanding of friendship paradox is very *** few works provide theoretical evidence of single-step and multi-step friendship paradoxes,given that the neighbors of interest are onehop and multi-hop away from the target ***,they consider non-evolving networks,as opposed to the topology of real social networks that are constantly growing over *** are thus motivated to present a first look into friendship paradox in evolving networks,where newly added nodes preferentially attach themselves to those with higher *** analytical verification of both single-step and multistep friendship paradoxes in evolving networks,along with comparison to the non-evolving counterparts,discloses that“friendship paradox is even more paradoxical in evolving networks”,primarily from three aspects:1)we demonstrate a strengthened effect of single-step friendship paradox in evolving networks,with a larger probability(more than 0.8)of a random node’s neighbors having higher average degree than the random node itself;2)we unravel higher effectiveness of multi-step friendship paradox in seeking for influential nodes in evolving networks,as the rate of reaching the max degree node can be improved by a factor of at least Θ(t^(2/3))with t being the network size;3)we empirically verify our findings through both synthetic and real datasets,which suggest high agreements of results and consolidate the reasonability of evolving model for real social networks.

关键词： evolving networks friendship paradox random walk social networks

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番茄潜叶蛾不同发育阶段过冷却点和结冰点的测定

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西北农业学报 2025年第1期34卷 177-183页

作者：丁嘉欣刘媛王新谱宁夏大学农学院银川750021 宁夏回族自治区农业技术推广总站银川750001

旨在明确番茄潜叶蛾(Tuta absoluta)不同发育阶段的抗寒能力,为番茄潜叶蛾的越冬条件确定和准确预测预报提供依据。利用昆虫过冷却点测定仪分别测定番茄潜叶蛾不同发育阶段的过冷却点和结冰点。结果表明,番茄潜叶蛾1龄幼虫的平均过冷却... 详细信息

旨在明确番茄潜叶蛾(Tuta absoluta)不同发育阶段的抗寒能力,为番茄潜叶蛾的越冬条件确定和准确预测预报提供依据。利用昆虫过冷却点测定仪分别测定番茄潜叶蛾不同发育阶段的过冷却点和结冰点。结果表明,番茄潜叶蛾1龄幼虫的平均过冷却点最低,为-21.63℃,而3龄幼虫的平均过冷却点最高,为-15.97℃,其余虫态平均过冷却点依次为-21.40℃(成虫)<-19.98℃(4龄幼虫)<-19.37℃(蛹)<-17.96℃(2龄幼虫);成虫的平均结冰点最低,为-19.37℃,3龄幼虫的平均结冰点最高,为-12.60℃,其余发育阶段平均结冰点依次为-18.93℃(1龄幼虫)<-16.32℃(4龄幼虫)<-16.16℃(蛹)<-14.24℃(2龄幼虫)。可见:番茄潜叶蛾1龄幼虫和成虫的抗寒能力相对较强,3龄幼虫的抗寒能力较弱。该虫在宁夏冬季露地上难以越冬,温室可以为其在不利的气候条件下提供庇护环境,限制1龄幼虫及成虫的虫口密度是维护早春茬作物产量与品质的关键。

关键词：番茄潜叶蛾过冷却点结冰点耐寒性越冬

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Chimeric Newcastle Disease Virus-like Particles Containing DC-Binding Peptide-Fused Haemagglutinin Protect Chickens from Virulent Newcastle Disease Virus and H9N2 Avian Influenza Virus Challenge

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Virologica Sinica 2020年第4期35卷 455-467页

作者： Xiaohong Xu Jing Qian Lingsong Qin Jindou Li Cong Xue jiaxin ding Weiqi Wang Wei ding Renfu Yin Ningyi Jin Zhuang ding Laboratory of Infectious Diseases College of Veterinary MedicineKey Laboratory of Zoonosis ResearchMinistry of EducationJilin UniversityChangchun 130062China College of Basic Medical Science Jilin UniversityChangchun 130021China Institute of Veterinary Medicine Jiangsu Academy of Agricultural Sciences/Key Laboratory for Veterinary Bio-Product EngineeringMinistry of AgricultureNanjing 210014China College of Agriculture and Forestry Science Linyi UniversityLinyi 276000China

Newcastle disease virus(NDV)and H9N2 subtype Avian influenza virus(AIV)are two notorious avian respiratory pathogens that cause great losses in the poultry *** inactivated commercial vaccines against NDV and AIV have the disadvantages of inadequate mucosal responses,while an attenuated live vaccine bears the risk of *** cell(DC)targeting strategies are attractive for their potent mucosal and adaptive immune-stimulating ability against respiratory *** this study,DC-binding peptide(DCpep)-decorated chimeric virus-like particles(cVLPs),containing NDV haemagglutinin–neuraminidase(HN)and AIV haemagglutinin(HA),were developed as a DC-targeting mucosal vaccine ***-decorated cVLPs activated DCs in vitro,and induced potent immune stimulation in chickens,with enhanced secretory immunoglobulin A(sIgA)secretion and splenic T cell differentiation.40μg cVLPs can provide full protection against the challenge with homologous,heterologous NDV strains,and AIV *** addition,DCpep-decorated cVLPs could induce a better immune response when administered intranasally than intramuscularly,as indicated by robust s IgA secretion and a reduced virus shedding *** together,this chimericVLPs are a promising vaccine candidate to control NDV and AIV H9N2 and a useful platform bearing multivalent antigens.

关键词： Newcastle disease virus-like particles DC-binding peptide H9N2 Secretory immunoglobulin A(sIgA) Candidate vaccine

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Lightweight Underwater Target Detection Using YOLOv8 with Multi-Scale Cross-Channel Attention

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Computers, Materials & Continua 2025年第1期82卷 713-727页

作者： Xueyan ding Xiyu Chen jiaxin Wang Jianxin Zhang School of Computer Science and Engineering Dalian Minzu UniversityDalian116600China Research Center of Multimodal Information Perception and Intelligent Processing Dalian Minzu UniversityDalian116600China

Underwater target detection is extensively applied in domains such as underwater search and rescue,environmental monitoring,and marine resource *** is crucial in enabling autonomous underwater robot operations and promoting ocean ***,low imaging quality,harsh underwater environments,and obscured objects considerably increase the difficulty of detecting underwater targets,making it difficult for current detection methods to achieve optimal *** order to enhance underwater object perception and improve target detection precision,we propose a lightweight underwater target detection method using You Only Look Once(YOLO)v8 with multi-scale cross-channel attention(MSCCA),named *** the proposed multiscale cross-channel attention module,multi-scale attention(MSA)augments the variety of attentional perception by extracting information from innately diverse sensory *** cross-channel strategy utilizes RepVGGbased channel shuffling(RCS)and one-shot aggregation(OSA)to rearrange feature map channels according to specific *** aggregates all features only once in the final feature mapping,resulting in the extraction of more comprehensive and valuable feature *** experimental results show that the proposed YOLOv8-UOD achieves a mAP50 of 95.67%and FLOPs of 23.8 G on the Underwater Robot Picking Contest 2017(URPC2017)dataset,outperforming other methods in terms of detection precision and computational cost-efficiency.

关键词： Deep learning underwater target detection attention mechanism

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镭-223治疗去势抵抗性前列腺癌骨转移的研究进展

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医药导报 2025年第3期44卷 446-451页

作者：卢畅张冉张丽丁佳欣孙悦冉卓灵郑雨璇喻琳高旭谢晶周焕宫建沈阳药科大学药物流行病与临床药物评价课题组沈阳110016 蚌埠医科大学第一附属医院临床试验研究中心蚌埠233000

前列腺癌是最常见的男性泌尿系统恶性肿瘤之一,去势抵抗性前列腺癌骨转移是疾病进展的重要阶段,严重影响患者生活质量及生存期。近年来,随着核素治疗技术的发展,镭-223(223-Ra)作为一种新型α靶向疗法,对去势抵抗性前列腺癌骨转移具有... 详细信息

前列腺癌是最常见的男性泌尿系统恶性肿瘤之一,去势抵抗性前列腺癌骨转移是疾病进展的重要阶段,严重影响患者生活质量及生存期。近年来,随着核素治疗技术的发展,镭-223(223-Ra)作为一种新型α靶向疗法,对去势抵抗性前列腺癌骨转移具有良好疗效。该文综述223-Ra特点、作用机制及其治疗去势抵抗性前列腺癌骨转移的主要研究成果,以期为223-Ra在去势抵抗性前列腺癌骨转移的临床应用提供参考。

关键词：镭-223 放射性核素去势抵抗性前列腺癌

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Data-enhanced revealing of trends in Geoscience

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Journal of Data and Information Science 2024年第3期9卷 29-43页

作者： Yu Zhao Meng Wang jiaxin ding Jiexing Qi Lyuwen Wu Sibo Zhang Luoyi Fu Xinbing Wang Li Cheng School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Key Laboratory of Ecological Security and Sustainable Development of Arid Areas State Key Laboratory of Desert and Oasis EcologyChinese Academy of SciencesUrumqiXinjiang830011China Xinjiang Key Laboratory of Mineral Resources and Digital Geology Urumqi 830011China Shanghai Jiao Tong University Shanghai 200240China Journal Center China University of GeosciencesBeijing 100083China

Purpose:This article presents an in-depth analysis of global research trends in Geosciences from 2014 to *** integrating bibliometric analysis with expert insights from the Deep-time Digital Earth(DDE)initiative,this article identifies key emerging themes shaping the landscape of Earth Sciences①.Design/methodology/approach:The identification process involved a meticulous analysis of over 400,000 papers from 466 Geosciences journals and approximately 5,800 papers from 93 interdisciplinary journals sourced from the Web of Science and Dimensions *** map relationships between articles,citation networks were constructed,and spectral clustering algorithms were then employed to identify groups of related research,resulting in 407 *** research terms were extracted using the Log-Likelihood Ratio(LLR)algorithm,followed by statistical analyses on the volume of papers,average publication year,and average citation count within each ***,expert knowledge from DDE Scientific Committee was utilized to select top 30 trends based on their representation,relevance,and impact within Geosciences,and finalize naming of these top trends with consideration of the content and implications of the associated *** comprehensive approach in systematically delineating and characterizing the trends in a way which is understandable to ***:Thirty significant trends were identified in the field of Geosciences,spanning five domains:deep space,deep time,deep Earth,habitable Earth,and big *** topics reflect the latest trends and advancements in Geosciences and have the potential to address real-world problems that are closely related to society,science,and *** limitations:The analyzed data of this study only contain those were included in the Web of *** implications:This study will strongly support the organizations and individual scientists to understand the modern frontier of earth science,espec

关键词： Geosciences Research trends Bibliometrics Expert knowledge Global voting

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童年创伤对女大学生强迫倾向的影响:心理弹性和自尊的中介作用

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中国健康心理学杂志 2025年第1期33卷 129-135页

作者：丁佳欣操慧颖李攀郭思颖张岚雷丽娟胡茂荣南昌大学公共政策与管理学院 330031 南昌大学第一附属医院心身医学科江西省人民医院南昌大学教育发展研究院南昌大学第一临床医学院

目的:探讨女大学生童年创伤、心理弹性、自尊与强迫倾向的关系并阐明其作用机制。方法:依据便利取样原则,采用心理弹性量表(CD-RISC)、儿童期创伤问卷(CTQ-SF)、自尊量表(SES)和症状自评量表(SCL-90)强迫分量表对398名女大学生进行调查... 详细信息

目的:探讨女大学生童年创伤、心理弹性、自尊与强迫倾向的关系并阐明其作用机制。方法:依据便利取样原则,采用心理弹性量表(CD-RISC)、儿童期创伤问卷(CTQ-SF)、自尊量表(SES)和症状自评量表(SCL-90)强迫分量表对398名女大学生进行调查。结果:①童年创伤显著预测女大学生强迫倾向(F=10.43,13.33,5.04,5.07,8.22,18.40,17.65,18.56,10.30,34.07;P<0.05);②强迫量表评分与自尊量表评分、心理弹性量表评分、心理弹性分量表评分呈负相关(r=-0.47,-0.28,-0.28,-0.28,-0.22;P<0.01);③心理弹性和自尊在童年创伤和强迫倾向间起链式中介作用(P<0.05)。结论:女大学生所经历的童年创伤会直接影响强迫倾向,同时也会通过影响心理弹性影响自尊,最终影响强迫倾向。本研究为预防和干预女大学生患强迫症提供了理论参考,强调了心理弹性和自尊在心理健康干预中的重要作用。

关键词：强迫倾向童年创伤心理弹性自尊链式中介作用

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Deciphering the role of mtH_(2)O_(2) in hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe

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Science China Chemistry 2025年第1期68卷 297-307页

作者： Bin Fang Limin Wang Haoqin Li jiaxin Zhang Yang ding PanPan Li Bo Peng Hua Bai Lin Li Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Institute of Flexible Electronics(IFE Future Technologies)Xiamen UniversityXiamen 361005China

Hepatic ischemia-reperfusion injury(HIRI)is characterized by mitochondrial dysfunction and oxidative *** mitochondrial hydrogen peroxide(mtH_(2)O_(2))levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during ***,low-background fluorogenic probes have been overlooked in the context of super-resolution *** this study,we developed a low-background fluorogenic probe(MitoWG)with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH_(2)O_(2)in *** of the desirable fluorescence properties of the probe by mtH_(2)O_(2)was confirmed using structural illumination microscopy(SIM),enabling high-quality mitochondrial imaging with exceptional specificity and *** in mtH_(2)O_(2)levels were successfully observed in both cellular and rat models of ***,we associated the decline in mitochondrial redox homeostasis with accelerated mtH_(2)O_(2)production during HIRI,which triggered mitophagy deficiency and led to cell *** conclusion,Mito-WG possesses excellent photophysical and low-background properties for SIM imaging,making it a promising tool for mtH_(2)O_(2)tracking in HIRI research and clinical diagnosis.

关键词： hepatic ischemia-reperfusion injury low-background mtH_(2)O_(2)-activatable super-resolution imaging fluorogenic probe

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反应熔渗C/C-SiC-ZrC复合材料的界面特征及其力学性能

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复合材料学报 2024年第11期41卷 6195-6205页

作者：丁家鑫陈招科王铎熊翔中南大学轻质高强结构材料重点实验室长沙410083

C/C-SiC-ZrC复合材料作为一种极具前景的热防护材料,在航空航天领域均有广泛应用。但是反应熔渗法(Reactive melt infiltration,RMI)制备的C/C-SiC-ZrC复合材料却存在力学性能偏低的缺点,成为制约其发展应用的主要因素。为了改善C/C-SiC... 详细信息

C/C-SiC-ZrC复合材料作为一种极具前景的热防护材料,在航空航天领域均有广泛应用。但是反应熔渗法(Reactive melt infiltration,RMI)制备的C/C-SiC-ZrC复合材料却存在力学性能偏低的缺点,成为制约其发展应用的主要因素。为了改善C/C-SiC-ZrC基复合材料的纤维损伤和力学性能,通过化学气相沉积(Chemical vapor deposition,CVD)在碳纤维针刺坯体中引入了300 nm厚的热解碳(Pyrolysis carbon,PyC)界面、300 nm厚的PyC/SiC双层界面和100 nm、300 nm、800 nm厚的(PyC+SiC)共沉积界面,再采用RMI制备出C/C-SiC-ZrC复合材料。采用XRD、SEM、电子探针(EPMA)和TEM等分析手段研究了C/C-SiC-ZrC复合材料的物相、微观形貌、元素分布及RMI后C/C-SiC-ZrC复合材料的界面损伤情况,并采用三点弯曲试验评估了RMI后试样的弯曲性能。结果表明:界面的引入不仅起到了对纤维的保护作用,同时也改善了纤维和基体间的结合状态,极大地避免了反应熔渗对碳纤维的侵蚀;PyC界面对纤维的保护作用有限,而PyC/SiC双层界面的保护作用最好;界面类型和界面厚度对复合材料力学性能产生重要影响,当界面厚度相同时,含(PyC+SiC)共沉积界面复合材料和含PyC/SiC双层界面复合材料的抗弯强度分别为162.80 MPa和208.58 MPa,均优于含PyC界面的复合材料;随(PyC+SiC)共沉积界面厚度的增大,复合材料的力学性能呈现先上升后下降的趋势。

关键词： C/C-SiC-ZrC复合材料界面反应熔渗界面损伤弯曲强度

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护士对遗传性肿瘤管理知信行问卷的编制及信效度检验

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中国实用护理杂志 2024年第18期40卷 1411-1417页

作者：丁嘉馨黄中英蒋超南丁涵中山大学护理学院广州510060 中山大学肿瘤防治中心护理部广州510060 深圳市儿童医院口腔科深圳518026

目的编制适合我国国情的护士对遗传性肿瘤管理知信行问卷,并对其进行信效度检测,为评估我国护士对遗传性肿瘤管理知信行状况及开展进一步的工作提供依据。方法采用横断面研究方法。根据知信行理论,采用文献回顾、小组讨论、专家函询、... 详细信息

目的编制适合我国国情的护士对遗传性肿瘤管理知信行问卷,并对其进行信效度检测,为评估我国护士对遗传性肿瘤管理知信行状况及开展进一步的工作提供依据。方法采用横断面研究方法。根据知信行理论,采用文献回顾、小组讨论、专家函询、预调查等方法编制护士对遗传性肿瘤管理知信行问卷初稿。2022年12月至2023年1月,通过便利抽样法选取广东省27所医院的173名护士作为调查对象,进行问卷信效度检验,形成最终问卷。结果最终回收有效问卷145份,男6名,女139名,年龄(31.35±7.23)岁。护士对遗传性肿瘤管理知信行问卷涵盖知识、态度、行为3个维度,共50个条目;总问卷Cronbachα系数为0.965,各维度的Cronbachα系数分别为0.938、0.967、0.956,折半信度系数为0.780。问卷总内容效度指数为0.960,各条目内容效度指数为0.857~1.000。探索性因子分析抽取7个公因子,累计方差贡献率为68.72%。结论护士对遗传性肿瘤管理知信行问卷信效度良好,可作为研究护士对遗传性肿瘤管理知识、态度和行为的调查工具。

关键词：护士遗传性肿瘤管理知信行信度效度

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