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品种推广的现状问题与建议

中国种业 2007年第9期 33-34页

作者：余贤强方玉敏唐薇重庆市涪陵区种子管理站 408000

1目前品种推广的基本情况1．1新品种数量不断增多，丰富了种子市场《种子法》实施后，植物新品种所有人的合法权益得到保护，选育的品种得到推广应用，育种者依法获得了相应的经济利益，改变了过去育种者无偿育种的局面，激发了广大育... 详细信息

1目前品种推广的基本情况1．1新品种数量不断增多，丰富了种子市场《种子法》实施后，植物新品种所有人的合法权益得到保护，选育的品种得到推广应用，育种者依法获得了相应的经济利益，改变了过去育种者无偿育种的局面，激发了广大育种者的积极性和创造力，农作物新品种尤其是“两杂”（杂交水稻、杂交玉米）新品种育种速度加快，

关键词：品种推广品种育种农作物新品种《种子法》植物新品种品种数量种子市场合法权益

Borohydride Ammoniate Solid Electrolyte Design for All-Solid-State Mg Batteries

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Energy & Environmental Materials 2024年第1期7卷 100-106页

作者： Yuepeng Pang Zhengfang Nie Fen Xu Lixian Sun Junhe Yang Dalin Sun fang fang Shiyou Zheng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China Guangxi Key Laboratory of Information Materials&Guangxi Collaborative Innovation Centre of Structure and Property for New Energy and Materials Guilin University of Electronic TechnologyGuilin 541004China Department of Materials Science Fudan UniversityShanghai 200433China

Searching for novel solid electrolytes is of great importance and challenge for all-solid-state Mg *** this work,we develop an amorphous Mg borohydride ammoniate,Mg(BH_(4))_(2)·2NH_(3),as a solid Mg electrolyte that prepared by a NH_(3)redistribution between 3D framework-γ-Mg(BH_(4))_(2)and Mg(BH_(4))_(2)·6NH_(3).Amorphous Mg(BH_(4))_(2)·2NH_(3)exhibits a high Mg-ion conductivity of 5×10^(-4)S cm^(-1)at 75℃,which is attributed to the fast migration of abundant Mg vacancies according to the theoretical ***,amorphous Mg(BH_(4))_(2)·2NH_(3)shows an apparent electrochemical stability window of 0-1.4 V with the help of in-situ formed interphases,which can prevent further side reactions without hindering the Mg-ion *** on the above superiorities,amorphous Mg(BH_(4))_(2)·2NH_(3)enables the stable cycling of all-solid-state Mg cells,as the critical current density reaches 3.2 mA cm^(-2)for Mg symmetrical cells and the reversible specific capacity reaches 141 mAh g^(-1)with a coulombic efficiency of 91.7%(first cycle)for Mg||TiS_(2)cells.

关键词： all-solid-state Mg batteries amorphization Mg borohydride ammoniate Mg vacancy migration solid electrolyte

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聚合细粒度特征的深度注意力自动裁图

中国图象图形学报 2022年第2期27卷 586-601页

作者：方玉明钟裕鄢杰斌刘丽霞江西财经大学信息管理学院南昌330032

目的从图像中裁剪出构图更佳的区域是提升图像美感的有效手段之一,也是计算机视觉领域极具挑战性的问题。为提升自动裁图的视觉效果,本文提出了聚合细粒度特征的深度注意力自动裁图方法(deep attention guided image cropping network w... 详细信息

目的从图像中裁剪出构图更佳的区域是提升图像美感的有效手段之一,也是计算机视觉领域极具挑战性的问题。为提升自动裁图的视觉效果,本文提出了聚合细粒度特征的深度注意力自动裁图方法(deep attention guided image cropping network with fine-grained feature aggregation,DAIC-Net)。方法整体模型结构由通道校准的语义特征提取(semantic feature extraction with channel calibration,ECC)、细粒度特征聚合(fine-grained feature aggregation,FFA)和上下文注意力融合(contextual attention fusion,CAF)3个模块构成,采用端到端的训练方式,核心思想是多尺度逐级增强不同细粒度区域特征,融合全局和局部注意力特征,强化上下文语义信息表征。ECC模块在通用语义特征的通道维度上进行自适应校准,融合了通道注意力;FFA模块将多尺度区域特征级联互补,产生富含图像构成和空间位置信息的特征表示;CAF模块模拟人眼观看图像的规律,从不同方向、不同尺度显式编码图像空间不同像素块之间的记忆上下文关系;此外,定义了多项损失函数以指导模型训练,进行多任务监督学习。结果在3个数据集上与最新的6种方法进行对比实验,本文方法优于现有的自动裁图方法,在最新裁图数据集GAICD(grid anchor based image cropping database)上,斯皮尔曼相关性和皮尔森相关性指标分别提升了2.0%和1.9%,其他最佳回报率指标最高提升了4.1%。在ICDB(image cropping database)和FCDB(flickr cropping database)上的跨数据集测试结果进一步表明了本文提出的DAIC-Net的泛化性能。此外,消融实验验证了各模块的有效性,用户主观实验及定性分析也表明DAIC-Net能裁剪出视觉效果更佳的裁图结果。结论本文提出的DAIC-Net在GAICD数据集上多种评价指标均取得最优的预测结果,在ICDB和FCDB测试集上展现出较强的泛化能力,能有效提升裁图效果。

关键词：自动裁图图像美学评价(IAA) 感兴趣区域(RoI) 空间金字塔池化(SPP) 注意力机制多任务学习

AI enhances drug discovery and development

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National Science Review 2024年第3期11卷 52-54页

作者： fang Bai Shiliang Li Honglin Li Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology ShanghaiTech University Lingang Laboratory Innovation Center for AI and Drug Discovery East China Normal University

The advent of the third wave of artificial intelligence(AI) heralds a new era in drug discovery. AI-powered techniques can be characteristic of identifying features that are difficult for humans to interpret from big ...

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Compatibility evaluation between waterborne epoxy resin and SBR latex modified asphalt emulsion

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 160-171页

作者： Jianhua Yang Zhengqi Zhang Ying fang Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China

Good compatibility between waterborne epoxy resin(WER)modifier and styrene-butadiene rubber(SBR)latex modified asphalt emulsion(SBRE)is an essential premise for good pavement performance of WER and SBR latex compositely modified asphalt emulsion(WSAE).This study aims to explore the compatibility between WER modifier and *** achieve the goal,several WER modifiers produced by two methods were first selected to modify SBRE,thus the WSAEs were ***,storage stability and workability of the WSAEs themselves,and high-temperature performance,rheological behavior and temperature sensitivity of their evaporated residues were compared and evaluated via performing a series of experiments,respectively,thus the WER modifier possessing an optimal modification effect was *** show that the storage stability of WSAEs is sensitive to the amount of *** incorporation of 1%WERs by the mass of SBRE improves the storage stability of SBRE,while WERs that exceed 1%weaken its storage *** the WERs reach 3%and 4%,the 5 d storage stability of prepared WSAEs will be beyond the limitation of *** WERs into SBRE negatively affects the workability of SBRE,and the workability of WSAEs is adversely influenced by the WERs content and the storage *** ensure the construction,the WSAEs with 3%and 4%WERs should not be stored for more than 36 h and 48 h,*** WERs effectively improve the high-temperature performance of SBRE residue,especially the 3%***,the WERs notably enhance the rheological property and thermal stability of SBRE *** contrast,the WER modifier produced by chemically modified method has a smaller adverse impact on the storage stability and workability of WSAE,and a larger enhancement on the high-temperature performance,rheological property and thermal stability of SBRE residue,which is thus recommended to modify SBRE.

关键词： Waterborne epoxy resin SBR modified asphalt emulsion Workability Rheological property Temperature sensitivity Compatibility evaluation

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如何培养应用型的微电子专业人才

价值工程 2010年第29期29卷 234-235页

作者：方玉明南京邮电大学通达学院南京210003 南京邮电大学电子科学与工程学院南京210003

本文结合本校的实际情况和特色,基于微电子专业的培养目标,从本科应用型人才培养的概念出发,从课程设置、教学内容、师资队伍建设、实验实践教学等方面探讨了应用型人才培养的模式。并提出了一系列切实可行的有效措施,从而推动我校微电... 详细信息

本文结合本校的实际情况和特色,基于微电子专业的培养目标,从本科应用型人才培养的概念出发,从课程设置、教学内容、师资队伍建设、实验实践教学等方面探讨了应用型人才培养的模式。并提出了一系列切实可行的有效措施,从而推动我校微电子新专业的快速发展,真正培养出应用型的微电子专业人才。

关键词：应用型人才微电子专业素质教育

A comparison of statistical learning of naturalistic textures between DCNNs and the human visual hierarchy

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Science China(Technological Sciences) 2024年第8期67卷 2310-2318页

作者： LU XinCheng YUAN ZiQi ZHANG YiChi AI HaiLin CHENG SiYuan GE YiRan fang fang CHEN NiHong Department of Psychological and Cognitive Sciences Tsinghua UniversityBeijing 100084China IDG/McGovern Institute for Brain Research Tsinghua UniversityBeijing 100084China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China School of Psychological and Cognitive Sciences and Beijing Key Laboratory of Behavior and Mental Health Peking UniversityBeijing 100871China Key Laboratory of Machine Perception(Ministry of Education) Peking UniversityBeijing 100871China Peking-Tsinghua Center for Life Sciences Peking UniversityBeijing 100871China IDG/McGovern Institute for Brain Research Peking UniversityBeijing 100871China State Key Laboratory of Brain and Cognitive Science Institute of PsychologyChinese Academy of SciencesBeijing 100101China

The visual system continuously adapts to the statistical properties of the environment. Existing evidence shows a close resemblance between deep convolutional neural networks(CNNs) and primate visual stream in neural selectivity to naturalistic textures above the primary visual processing stage. This study delves into the mechanisms of perceptual learning in CNNs,focusing on how they assimilate the high-order statistics of natural textures. Our results show that a CNN model achieves a similar performance improvement as humans, as manifested in the learning pattern across different types of high-order image statistics. While L2 was the first stage exhibiting texture selectivity, we found that stages beyond L2 were critically involved in learning. The significant contribution of L4 to learning was manifested both in the modulations of texture-selective responses and in the consequences of training with frozen connection weights. Our findings highlight learning-dependent plasticity in the mid-to-high-level areas of the visual hierarchy. This research introduces an AI-inspired approach for studying learning-induced cortical plasticity, utilizing DCNNs as an experimental framework to formulate testable predictions for empirical brain studies.

关键词： CNN perceptual learning naturalistic texture psychophysics

Interface engineering enabled sintering-resistant metal nanocatalysts via reverse Ostwald ripening

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Science China Chemistry 2024年第9期67卷 2789-2791页

作者： Ying Sun Wenhui fang Jieshan Qiu Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning ProvinceCollege of ChemistryLiaoning UniversityShenyang 110036China State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China

The design and fabrication of advanced nanocatalysts with the high activity,selectivity,and superior durability remains a big challenge in industrial catalysis[1,2].The sintering of nanocatalysts under the thermally and/or chemically triggered conditions is a bottle-neck issue,which seriously decreases the amount of the exposed active sites and changes the original electronic structure of catalysts,resulting in the irreversible catalyst deactivation and high capital and time cost in industrial operation[3].

关键词： durability irreversible catalysis

Improved performance of LiMn_(0.8)Fe_(0.2)PO_(4) by addition of fluoroethylene carbonate electrolyte additive

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Chinese Chemical Letters 2024年第6期35卷 229-233页

作者： Guihuang fang Wei Chen Hongwei Yang Haisheng fang Chuang Yu Maoxiang Wu Faculty of Metallurgy and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The addition of electrolyte additives is an effective strategy for tuning the property of the electrolyte to engineer the electrode/electrolyte interface,and there exist obvious discrepancies regarding the effect of fluoroethylene carbonate(FEC)as an electrolyte additive on the performance of *** FEC is introduced into the electrolyte of the LiMn_(0.8)Fe_(0.2)PO_(4)/Li cell and its effect on the properties of the LiMn_(0.8)Fe_(0.2)PO_(4) is *** is found that the addition of FEC in the electrolyte has a positive effect on the performance of the LiMn_(0.8)Fe_(0.2)PO_(4) cathode,which can be attributed to the reduced products generated by the interfacial side-reactions on the LiMn_(0.8)Fe_(0.2)PO_(4) cathode surface and the decreased metal dissolution in the FEC-containing electrolyte,thanks to the higher oxidation resistance of FEC and the easier and stronger binding of FEC and PF_6^(-).

关键词： Lithium-ion batteries LiMn_(0.8)Fe_(0.2)PO_(4) Cathode Electrolyte additives Fluoroethylene carbonate