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Computational Visual Media 2024年第1期10卷 27-43页

作者： Mingye Xu Zhipeng Zhou yali Wang Yu Qiao Guangdong-Hong kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518000China University of Chinese Academy of Sciences Beijing065001China Shanghai AI Laboratory Shanghai200001China SIAT Branch Shenzhen Institute of Artificial Intelligence and Robotics for SocietyShenzhen518000China Alibaba DAMO Academy Hangzhou242332China

Robustness and generalization are two challenging problems for learning point cloud representation.To tackle these problems,we first design a novel geometry coding model,which can effectively use an invariant eigengraph to group points with similar geometric information,even when such points are far from each other.We also introduce a large-scale point cloud dataset,PCNet184.It consists of 184 categories and 51,915 synthetic objects,which brings new challenges for point cloud classification,and provides a new benchmark to assess point cloud cross-domain generalization.Finally,we perform extensive experiments on point cloud classification,using ModelNet40,ScanObjectNN,and our PCNet184,and segmentation,using ShapeNetPart and S3DIS.Our method achieves comparable performance to state-of-the-art methods on these datasets,for both supervised and unsupervised learning.Code and our dataset are available at https://***/MingyeXu/PCNet184.

关键词： geometry coding self-supervised learning point cloud classification segmentation 3D analysis

Hydrogen Sulfide Improves Rice Seed Germination by Regulating Aluminum Absorption,Internal Antioxidant Enzyme System and Osmotic Balance under Aluminum Toxicity Conditions

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Rice science 2023年第4期30卷 271-275,I0005-I0009页

作者： WEI Qianqian kong yali XIANG Xingjia ZHU Lianfeng LIU Jia TIAN Wenhao JIN Qianyu YU Yijun ZHANG Junhua ZHU Chunquan State Key Laboratory of Rice Biology China National Rice Research Institute Anhui University Jiangxi Academy of Agricultural Sciences Zhejiang Cultivated Land Quality and Fertilizer Administration Station

Uncovering the mechanism of hydrogen sulfide(H2S)in improving rice seed germination under aluminum(Al)toxicity conditions is important for rice production in acidic soil.In the present study,an Al sensitive rice variety Kasalath was used.Pretreatment with 0.1 mmol/L sodium hydrosulfide(NaHS,H2S donor)under 70 mmol/L AlCl3(indicated as Al+NaHS treatment)increased rice seed germination by 27.95%,germination potential by 474.16%,and the germination index by 43.44%,compared with Al treatment.The treatment of Al+NaHS reduced the Al content in rice seeds by 16.31%and 32.11%and increased the internal H2S content by 3.82%and 8.90%at 3 and 5 d of treatment,respectively,compared with Al treatment.Al+NaHS treatment significantly increased the activities of superoxide dismutase(SOD)。

关键词： Antioxidant treatment Internal

Emission and optical characteristics of brown carbon in size-segregated particles from three types of Chinese ships

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Journal of Environmental Sciences 2024年第8期142卷 248-258页

作者： Fengqin Yang Fan Zhang Zeyu Liu Yingjun Chen Yan Zhang Can Wu yali Lei Shijie Liu Binyu Xiao Xinyi Wan Yubao Chen Yong Han Min Cui Cheng Huang Gehui Wang Key Lab of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Institute of Eco-Chongming 20 Cuiniao Rd.ChongmingShanghai 202150China State Environmental Protection Key Laboratory of Formation and Prevention of the Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Department of Civil and Environmental Engineering and State Key Laboratory of Marine Pollution The Hong Kong Polytechnic UniversityKowloon 100872Hong KongChina College of Environmental Science and Engineering Yangzhou UniversityYangzhou 225009China

Brown carbon(BrC)is one of the important light absorption substances that have high light absorption ability under short wavelength light.However,limit studies have focused on the BrC emission from ships.In this study,size-segregated particulate matters(PM)were collected from three different types of ships,light absorption characteristics and size distribution of methanol-soluble BrC and water-soluble BrC in PM from ship exhausts were investigated.Results showed that four-stroke low-power diesel fishing boat(4-LDF)had the highest mass concentrations of methanol-soluble organic carbon(MSOC)and water-soluble organic carbon(WSOC),followed by 2-stroke high-power heavy-fuel-oil vessel(2-HHV),and fourstroke high-power marine-diesel vessel(4-HMV).While 2-HHV had obviously higher light absorption coefficients of methanol-soluble BrC(Abs365,M)and water-soluble BrC(Abs365,W)in unit weight of PM than the other two types of ships.The tested ships presented comparable or higher absorption efficiency of BrC in water extracts(MAE365,W)compared with other BrC emission sources.Majority of BrC was concentrated in fine particles,and the particle size distributions of both Abs365,Mand Abs365,Wshowed bimodal patterns,peaking at0.43–0.65μm and 4.7–5.8μm,respectively.However,different particle size distributions were found for MAE365,Mbetween diesel and heavy fuel oil ships.Besides,different wavelength dependence in particles with different size were also detected.Ship exhaust could be confirmed as a non-ignorable BrC emission source,and complex influencing factor could affect the light absorption characteristics of ship emissions.Particle size should also be considered when light absorption ability of BrC was evaluated.

关键词： Ship emission Brown carbon Light absorption Size distribution

农村数字化发展能否提升林业经济韧性——基于30个省域面板数据的实证检验

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林业科学 2024年第5期60卷 51-66页

作者：穆亚丽王浩杨红强孔凡斌南京林业大学数字林业与绿色发展研究院/经济管理学院/国家林业与草原局林产品经济与贸易研究中心南京210037 北京理工大学管理学院南京100081

[目的]研究农村数字化发展提升林业经济韧性的作用机制,为推动形成林业可持续发展新格局提供科学依据。[方法]基于2011-2020年中国30个省(区、市)面板数据,构建多维度指标体系评估农村数字化发展水平和林业经济韧性水平,采用固定效应模... 详细信息

[目的]研究农村数字化发展提升林业经济韧性的作用机制,为推动形成林业可持续发展新格局提供科学依据。[方法]基于2011-2020年中国30个省(区、市)面板数据,构建多维度指标体系评估农村数字化发展水平和林业经济韧性水平,采用固定效应模型、机制检验模型、面板门槛模型和空间杜宾模型等检验农村数字化发展水平和林业经济韧性水平之间的因果关系和作用机制。[结果]1)农村数字化发展能够提升林业经济韧性,提高劳动力资源生产率和土地资源生产率是农村数字化发展影响林业经济韧性的主要路径,农村数字化发展提升林业经济韧性效应存在显著区域异质性,东部地区效应更强且边际效益递增,林业经济韧性水平越高,农村数字化发展的提升效应越强。2)在不同农村数字化发展水平下,农村数字化发展对林业经济韧性的影响呈非线性特征,表现为前期极强的数字红利、中期面临数字化瓶颈、后期效益递增。3)农村数字化发展影响林业经济韧性存在门槛效应,当农村数字化发展水平低于第一个门槛时,农村数字化发展对林业经济韧性的影响显著为正;跨越第一个阈值后,随着农村数字化发展水平提升呈现边际收益递减趋势;也存在显著的空间溢出效应,直接影响和间接影响均显著为正。4)除农村数字化发展水平外,经济发展水平、产业结构、降水量对林业经济韧性水平也具有显著正向影响。[结论]农村数字化发展能够有效提升林业经济韧性,应充分发挥数字技术提高劳动力资源生产率和土地资源生产率的作用,大力发展农村数字经济,注重分阶段动态化和差异化提升数字赋能林业经济韧性,与加强经济基础支撑、优化产业结构和借助自然禀赋协同提升林业经济韧性。

关键词：农村数字化发展林业经济韧性资源配置效率数字红利

Slc43a2^(+)T cell metastasis from spleen to brain in RGNNV infected teleost

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Science China(Life Sciences) 2024年第4期67卷 733-744页

作者： Qing Wang yali Liu Minlin Zhang Min Yang Jiantao Liang Xiaoling Zuo Shaowen Wang Xianze Jia Huihong Zhao Han Jiang Qiang Lin Qiwei Qin College of Marine Sciences South China Agricultural UniversityGuangzhou 510642China CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Nansha-South China Agricultural University Fishery Research Institute Guangzhou 511457China Joint University Laboratory of Guangdong Province Hong Kong and Marco Region on Marine Bioresource Conservation and ExploitationGuangzhou 510642China University of Chinese Academy of Sciences Beijing 100101China

The origin of T cells in the teleost's brain is unclear.While viewing the central nervous system(CNS)as immune privileged has been widely accepted,previous studies suggest that T cells residing in the thymus but not in the spleen of the teleost play an essential role in communicating with the peripheral organs.Here,we identified nine T cell subpopulations in the thymus and spleen of orange-spotted grouper(Epinephelus coioices)through single-cell RNA-sequencing analysis.After viral CNS infection with red-spotted grouper nervous necrosis virus(RGNNV),the number of slc43a2^(+)T cells synchronously increased in the spleen and brain.During the infection tests in asplenic zebrafish(tlx1^▲zebrafish model),no increase in the number of slc43a2^(+)T cells was observed in the brain.Single-cell transcriptomic analysis indicated that slc43a2^(+)T cells mature and functionally differentiate within the spleen and then migrate into the brain to trigger an immune response.This study suggests a novel route for T cell migration from the spleen to the brain during viral infection in fish.

关键词： central nervous system slc43a2^(+)T cell RGNNV T cell migration teleost

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大数据下计算机软件技术的应用及开发分析

软件 2024年第3期45卷 129-131页

作者：孔亚莉枣庄科技职业学院山东枣庄277599

本文以大数据、计算机软件技术为重点进行研究,结合前人的工作成果以及个人工作经验,分析大数据与计算机软件技术之间的联系、大数据下计算机软件新兴技术概况,包括人工智能、物联网、区块链等。在此基础上研究大数据下计算机软件技术... 详细信息

本文以大数据、计算机软件技术为重点进行研究,结合前人的工作成果以及个人工作经验,分析大数据与计算机软件技术之间的联系、大数据下计算机软件新兴技术概况,包括人工智能、物联网、区块链等。在此基础上研究大数据下计算机软件技术的具体应用、开发思路,就其应用框架、技术实现方法、数据采集、信息加工与运用等内容进行具体论述,一方面明晰大数据与计算机软件技术的相互关系,另一方面也从技术角度推动其运用和发展。

关键词：大数据计算机软件技术人工智能数据加工

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计算机软件开发中物联网技术的运用研究

软件 2024年第4期45卷 83-85页

作者：孔亚莉枣庄科技职业学院山东枣庄277599

本文以计算机软件开发中物联网技术的运用为核心展开研究,对物联网技术、计算机软件开发工作进行简述,在此基础上探讨计算机软件开发的实践流程,包括需求分析、主程序开发以及功能测试等。论述物联网技术在计算机软件开发中的应用,从数... 详细信息

本文以计算机软件开发中物联网技术的运用为核心展开研究,对物联网技术、计算机软件开发工作进行简述,在此基础上探讨计算机软件开发的实践流程,包括需求分析、主程序开发以及功能测试等。论述物联网技术在计算机软件开发中的应用,从数据采集、信息交互、软件测试等角度进行探讨,以共性理论为着眼点,分析物联网技术的具体运用方法,以服务计算机软件开发工作,也为物联网技术的进一步发挥作用提供参考。

关键词：计算机软件开发物联网技术主程序数据采集

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国际组织基础教育人工智能伦理政策透视

比较教育研究 2024年第2期46卷 13-20,32页

作者：尹雅丽赣南师范大学外国语学院江西赣州341000 国家教材建设重点研究基地华南师范大学港澳台教材综合研究基地广东广州510631

选取2019年以来国际组织具有代表性的4个基础教育人工智能伦理政策,构建目标阐释、伦理方案和实施框架3个层面、9个维度的分析框架进行梳理。以上政策深刻剖析技术影响,确定学生权益保护的紧迫性,通过参与机构责任分工、加强监测与评估... 详细信息

选取2019年以来国际组织具有代表性的4个基础教育人工智能伦理政策,构建目标阐释、伦理方案和实施框架3个层面、9个维度的分析框架进行梳理。以上政策深刻剖析技术影响,确定学生权益保护的紧迫性,通过参与机构责任分工、加强监测与评估、建立法律规范等举措,突围技术应用中存在的伦理困境,在目标层面指导政策实施和评估,在方案层面构筑数据隐私屏障,在实施层面鼓励各方协同参与。“公平与安全”“开放与自治”是4个政策的核心要义和行动指南。国际组织基础教育人工智能伦理政策的新动向体现出以人为本、关爱儿童的价值追求,强调因地制宜地推进政策落实。然而,监管规则的统一性和资源保障的有效性仍有待进一步完善。

关键词：基础教育人工智能伦理政策,国际组织

Modified Xiaoyao powder for postpartum depression:A systematic review and meta-analysis

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Journal of Traditional Chinese Medical Sciences 2024年第1期11卷 120-130页

作者： Mengyuan Hu Xiaowen Zhang Xuya Zhang Dan Cheng yali Zhang Xinyu Zhang Lingling Li Xinjie Li Xue Li Yi Lu School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 102488China Centre for Evidence Based Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China School of Chinese Medicine The University of Hong KongHong KongChina

Objective:To evaluate the effectiveness and safety of modified Xiaoyao powder for postpartum depression(PPD)by conducting a systematic review of randomized controlled trials(RCTs).Methods:The Chinese National Knowledge Infrastructure Databases(CNKI),the Chinese Scientific Journals Database(VIP),Wanfang,Google Scholar,the SinoMed,Embase,Cochrane Library,and PubMed databases were searched from their inception to April 25,2023.The Cochrane Risk of Bias tool was used to assess the quality of the trials.We applied the risk ratio to present dichotomous data and the mean difference to present continuous data.Data with similar characteristics were pooled for meta-analysis and heterogeneity was assessed using I2.Results:This review included 35 trials involving 2848 participants.The quality of the included studies was low(unclear randomization processes and insufficient reporting of blinding).Participants treated with modified Xiaoyao powder plus Western medicine showed lower Hamilton Depression Scale(HAMD)depression score than those who used Western medicine alone(mean difference=-2.15;95%confidence interval:-2.52 to 1.78;P<.00001),and higher effective rate(relative risk=1.19;95%confidence interval:1.15 to 1.24;P<.00001),When comparing modified Xiaoyao alone with Western medicine,the HAMD depression score remained low,however,the efficacy rate was higher in the modified Xiaoyao group.Regarding adverse events,the modified Xiaoyao group reported weight gain,nausea,and diarrhea,but no severe adverse events were reported.Conclusion:Modified Xiaoyao may help relieve depression in PPD when used alone or in combination with Western medicine,with minor side effects.Therefore,future high-quality,large-sample size RCTs are warranted.

关键词： Postpartum depression Modified Xiaoyao Chinese medicine Systematic review Meta-analysis

Physiological and Proteomic Analyses Reveal Effects of Putrescine-Alleviated Aluminum Toxicity in Rice Roots

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Rice science 2021年第6期28卷 579-593,I0040-I0048页

作者： ZHU Chunquan HU Wenjun CAO Xiaochuang ZHU Lianfeng kong yali JIN Qianyu SHEN Guoxin WANG Weipeng ZHANG Hui ZHANG Junhua State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China State Key Laboratory far Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products Zhejiang Academy of Agricultural SciencesHangzhou 310021China Agricultural Resources and Environment Institute Jiangsu Academy of Agricultural SciencesNanjing 210014China College of Environmental and Resource Science Shanxi UniversityTaiyuan 030006China

The effects of putrescine on improving rice growth under aluminum(Al)toxicity conditions have been previously demonstrated,however,the underlying mechanism remains unclear.In this study,treatment with 50 pmol/L Al significantly decreased rice root growth and whole rice dry weight,inhibited Ca2+uptake,decreased ATP syn thesis,and in creased Al,H2O2 and malon dialdehyde(MDA)con tents,whereas the application of putrescine mitigated these negative effects.Putrescine increased root growth and total dry weight of rice,reduced total Al content,decreased H2O2 and MDA contents by increasing antioxidant enzyme(superoxide dismutase,peroxidase,catalase and glutathione S・transferase)activities,increased Ca2+uptake and energy product!oru Proteomic analyses using data-independent acquisition successfully identified 7934 proteins,and 59 representative proteins exhibiting fold-change values higher than 1.5 were randomly selected.From the results of the proteomic and biochemical analyses,we found that putrescine significantly inhibited ethylene biosynthesis and phosphorus uptake in rice roots,increased pectin methylation,decreased pectin content and apoplastic Al deposit!on in rice roots.Putrescine also alleviated Al toxicity by repairing damaged DNA and increasing the proteins involved in maintaining plasma membra ne integrity and normal cell proliferation.These fin dings improve our understanding of how putrescine affects the rice response to Al toxicity,which will facilitate further studies on environmental protection,crop safety,in novations in rice performance and real-world producti on.

关键词： aluminum toxicity antioxidant enzyme data-independent analysis putrescine proteomics rice