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Zoological Research(Diversity and Conservation) 2024年第1期1卷 66-74页

作者： Bao-Guo Li He Zhang Ming Li Xue-Long Jiang Peng-Fei Fan Jiang Zhou Song-Tao Guo Xiao-Guang Qi Jin-Hua Li Ji-Qi Lu Dong-Po Xia Liang-Wei Cui Zuo-Fu xiang Qi-Hai Zhou Zhi-Pang huang Cheng-Ming huang Wen Xiao Hui-Jian Hu Zhi-Xin Zhou Ming-Yong Chen Da-Yong Li Peng-Lai Fan Yin yang Ru-Liang Pan Shaanxi Key Laboratory for Animal Conservation College of Life SciencesNorthwest UniversityXi’anShaanxi 710069China Jiangxi Provincial Key Laboratory of Conservation Biology College of ForestryJiangxi Agricultural UniversityNanchangJiangxi 330045China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650201China school of Life sciences Sun Yat-sen UniversityGuangzhouGuangdong 510275China school of Karst science Guizhou Normal UniversityGuiyangGuizhou 550025China International Collaborative Research Center for huangshan Biodiversity and Tibetan Macaque Behavioral Ecology Anhui UniversityHefeiAnhui 230601China Institute of Biodiversity and Ecology Zhengzhou UniversityZhengzhouHenan 450001China Key Laboratory for Conserving Wildlife with Small Populations in Yunnan Southwest Forestry UniversityKunmingYunnan 650224China College of Life sciences and technology Central South University of Forestry and TechnologyChangshaHunan 410004China Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Ministry of Education) Guangxi Normal UniversityGuilinGuangxi 541004China International Centre of Biodiversity and Primate Conservation Centre Dali UniversityDaliYunnan 671003China Guangdong Key Laboratory of Animal Conservation and Resource Utilization Institute of ZoologyGuangdong Academy of SciencesGuangzhouGuangdong 510663China school of Life sciences Yunnan UniversityKunmingYunnan 650500China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchongSichuan 637001China Institute of International Rivers and Eco-security Yunnan UniversityKunmingYunnan 650500China school of Human sciences The University of Western AustraliaPerthWA 6009Australia

The dual impact of climate change and human activities has precipitated a sharp decline in primate biodiversity *** is home to the most diverse primate species in the Northern hemisphere,which face severe ecological threats due to the expansion of modern agriculture,extensive exploitation and consumption of natural resources,and excessive land development during its transition from an agricultural to a modern *** response,China has implemented various ecological conservation measures,including habitat restoration and *** efforts have made substantial strides in biodiversity conservation,with certain regions witnessing an increase in primate *** the current study,we conducted a systematic review of historical documents and field research data related to Chinese primates,evaluating the endangered status of primate species in *** improvements in the habitats of most primate species and some population growth,many species still face severe threats,including declining and small *** such as the Myanmar snub-nosed monkey(Rhinopithecus strykeri),eastern black crested gibbon(Nomascus nasutus),and Hainan gibbon(***)remain particularly vulnerable due to their limited distribution ranges and extremely small *** scientific data,fragmented information,and not enough studies in conservation biology further compound the ***,there is a notable lack of detailed population monitoring data for species such as the Bengal slow loris(Nycticebus bengalensis),pygmy slow loris(***),Indochinese gray langur(Trachypithecus crepusculus),Shortridge’s langur(***),and capped langur(***),which hinders the development of practical and targeted conservation management ***,for national biodiversity conservation,there is an urgent need for specialized primate surveys,enhancing habitat protection and restoration,and increasing focus on cross-border conse

关键词： Primates Biodiversity Habitat fragmentation Habitat restoration Conservation strategies

Erratum to: In vitro induction of mouse meningeal-derived iPS cells into neural-like cells

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science Bulletin 2011年第23期56卷 2520-2520页

作者： XU Jing 1,2., WANG Hao 1 , LIANG Tao 1,2., CAI xiangSheng 1 , RAO XiuRong 1 , huang ZhenBo 1 & SHENG GuoQing 1* 1 Key Laboratory of Regenerative Biology, Laboratory of Stem Cell Therapy, {2. Institute of Biomedicine and Health (GIBH), Chinese Academy of sciences, {2. 510530, China 2.school of Life sciences, university of science and technology of China, Hefei 2.002., China Key Laboratory of Regenerative Biology Laboratory of Stem Cell Therapy Guangzhou Institute of Biomedicine and Health (GIBH) Chinese Academy of Sciences Guangzhou China school of Life sciences University of Science and Technology of China Hefe China

The authors report that incorrect figures were included as Figures 4.and 5 in the original publication of this paper. This error occurred during the figure editing process of the publishing company. This information s... 详细信息

关键词： iPSC Erratum to

Harpoon-shaped topological photonic crystal for on-chip beam splitter

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science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 91-98页

作者： Zhiwei Guan Ruixue Dou Chuangxin Xie Tianyimei Zuo Liyu huang Keyin Wen Chaofeng Wang Huapeng Ye Junmin Liu Ze Dong Dianyuan Fan Shuqing Chen Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China College of Physics and Engineering technology Minzu Normal University of XingyiXingyi 562400China Guangdong Provincial Key Laboratory of Optical information Materials and technology and Institute of Electronic Paper Displays South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China school of information and Electronics Beijing Institute of TechnologyBeijing 100081China

The advancement of integrated optical communication networks necessitates the deployment of on-chip beam splitters for efficient signal interconnections at network ***,the pursuit of micron-scale beam splitting with large corners and reducing the device footprint to boost connection flexibility often results in phase *** mismatches,which stem from radiation modes and backward scattering,pose significant obstacles in creating highly integrated and interference-resistant *** address this,we introduce a solution based on the topological valley-contrasting state generated by photonic crystals with opposing valley Chern numbers,manifested in a harpoon-shaped structure designed to steer the splitting *** approach enables adiabatic mode field evolution over large corners,capitalizing on the robust phase modulation capabilities and topological protection provided by the subwavelength-scale valley-contrasting *** demonstration reveals that beam splitters with large corners of 60°,90°,and 12.°exhibit insertion loss fluctuations below 2.7 dB while maintaining a minimal footprint of 8.8μm×8.8μ*** a practical demonstration,these devices facilitate three-channel signal connections,successfully transmitting quadrature phase shift keying signals at 3.66 Tbit/s with bit error rates below the forward error correction threshold,demonstrating performance comparable to that in defects *** harnessing the unidirectional excitation feature,we anticipate significant enhancements in the capabilities of signal distribution and connection networks through a daisy chain configuration.

关键词： channel interconnection on-chip beam splitter topological valley-contrasting state

Evolution of Surface Sensible Heat over the Tibetan Plateau Under the Recent Global Warming Hiatus

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Advances in Atmospheric sciences 2017年第10期34卷 1249-1262页

作者： Lihua ZHU Gang huang guangzhou FAN Xia QU Guijie ZHAO Wei HUA State Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China university of Chinese Academy of sciences Beijing 100049China school of Atmospheric sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province/Joint Laboratory of Climate and Environment Change Chengdu University of lnformation TechnologyChengdu 610225China Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Joint Center for Global Change Studies Beijing 100875China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Based on regular surface meteorological observations and NCEP/DOE reanalysis data, this study investigates the evolution of surface sensible heat（SH） over the central and eastern Tibetan Plateau（CE-TP） under the recent global warming hiatus. The results reveal that the SH over the CE-TP presents a recovery since the slowdown of the global warming. The restored surface wind speed together with increased difference in ground-air temperature contribute to the recovery in *** the global warming hiatus, the persistent weakening wind speed is alleviated due to the variation of the meridional temperature gradient. Meanwhile, the ground surface temperature and the difference in ground-air temperature show a significant increasing trend in that period caused by the increased total cloud amount, especially at night. At nighttime, the increased total cloud cover reduces the surface effective radiation via a strengthening of atmospheric counter radiation and subsequently brings about a clear upward trend in ground surface temperature and the difference in ground-air ***–radiation feedback plays a significant role in the evolution of the surface temperature and even SH during the global warming hiatus. Consequently, besides the surface wind speed, the difference in ground-air temperature becomes another significant factor for the variation in SH since the slowdown of global warming, particularly at night.

关键词： surface sensible heat Tibetan Plateau ground-air temperature difference surface wind speed global warming hiatus

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一种具有超宽输入功率范围的三路整流电路

南京信息工程大学学报 2024年第2期16卷 173-178页

作者：王清华杨梅杨利霞黄志祥车文荃安徽大学电子信息工程学院合肥230601 华南理工大学电子与信息学院广州510640

本文提出一种具有超宽输入功率范围的三路整流电路.通过在三条整流支路中采用不同阈值电压的二极管,使每条支路对不同输入功率进行高效整流,三条整流支路协同作用,使所提出的整流电路能够在超宽输入功率范围内保持高效率工作;设计并实... 详细信息

本文提出一种具有超宽输入功率范围的三路整流电路.通过在三条整流支路中采用不同阈值电压的二极管,使每条支路对不同输入功率进行高效整流,三条整流支路协同作用,使所提出的整流电路能够在超宽输入功率范围内保持高效率工作;设计并实现了一个工作在2.4.GHz的三支路整流电路,三条整流支路分别实现在-10~11、11~2.0}2.0}35 dBm的功率范围内,效率保持在30%以上.测试结果表明:在-6~2. dBm的输入功率范围内,电路的转换效率均可保持在4.%以上,最高效率可以达到71.2..所提出的整流电路对输入功率的灵敏度较低,能够在超宽输入功率范围内实现高效率能量转换,可用于能量收集或动态无线能量传输系统中.

关键词：整流电路宽功率范围三路整流高效率无线能量传输

冷喷涂前驱体-热等静压制备致密TiAl金属间化合物

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材料研究与应用 2024年第4期18卷 649-655页

作者：孙忠武马佳艳褚欣谢迎春刘敏黄继武中国航发哈尔滨东安发动机(集团)有限公司黑龙江哈尔滨150060 中南大学材料科学与工程学院湖南长沙410083 广东省科学院新材料研究所/现代材料表面工程技术国家工程实验室/广东省现代表面工程技术重点实验室广东广州510650

TiAl基合金作为一种可替代传统高温镍基合金的高温轻质材料,因优异特性被作为高推重比先进军用飞机发动机高压压气机及低压涡轮叶片的首选材料,可在高温环境下长期服役。然而,TiAl基合金的传统制备方法如精密铸造、铸锭冶金、粉末冶金... 详细信息

TiAl基合金作为一种可替代传统高温镍基合金的高温轻质材料,因优异特性被作为高推重比先进军用飞机发动机高压压气机及低压涡轮叶片的首选材料,可在高温环境下长期服役。然而,TiAl基合金的传统制备方法如精密铸造、铸锭冶金、粉末冶金、激光增材技术等,均存在成品性能差、加工难度大、工艺复杂和成本高等问题。为克服这些问题,高效制备满足新一代航空发动机轻量化、耐高温服役需求的优异性能TiAl基合金,基于元素粉末冶金法,提出了一种新的制备方法。选用Ti和Al混合粉末,采用冷喷涂法制备TiAl基合金预制体,再结合热等静压烧结技术实现TiAl基合金的复合制备。同时,探究了沉积参数对沉积效率和TiAl基合金涂层成分的影响,研究了不同热等静压参数对TiAl基合金的组织性能的调控作用。结果表明,所制备的TiAl基合金涂层致密无明显缺陷,在压力为5 MPa和温度为500℃的冷喷涂工艺参数下,获得了75%的较高的沉积效率和4.的较小的涂层成分偏差。通过合理调控后续热等静压工艺的温度、压力和升温升压方式等参数,最终实现了组织致密的TiAl基合金制备。该复合制备新方法,避免了TiAl合金粉末本征脆性难以直接冷喷涂成形的缺点,充分发挥了冷喷涂和热等静压技术的优势,有效解决了传统TiAl合金成形难题,为冷喷涂-热等静压近净成形TiAl基合金提供了参考。

关键词： TiAl合金冷喷涂热等静压前驱体沉积效率孔隙率扩散相变

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AIGC视觉内容生成与溯源研究进展

中国图象图形学报 2024年第6期29卷 1535-1554页

作者：刘安安苏育挺王岚君李斌钱振兴张卫明周琳娜张新鹏张勇东黄继武俞能海天津大学电气自动化与信息工程学院天津300072 深圳大学电子信息与工程学院深圳518060 复旦大学计算机科学技术学院上海200438 中国科学技术大学信息科学技术学院合肥230026 北京邮电大学网络空间安全学院北京100876 中国科学技术大学网络空间安全学院合肥230027

随着数字媒体与创意产业的快速发展,人工智能生成内容(artificial intelligence generated content, AIGC)技术以其在视觉内容生成中的创新应用而逐渐受到关注。本文旨在围绕AIGC视觉内容生成与溯源研究进展深入研讨。首先,针对图像生... 详细信息

随着数字媒体与创意产业的快速发展,人工智能生成内容(artificial intelligence generated content, AIGC)技术以其在视觉内容生成中的创新应用而逐渐受到关注。本文旨在围绕AIGC视觉内容生成与溯源研究进展深入研讨。首先,针对图像生成技术进行探讨,从基于生成式对抗网络的传统方法出发,系统地分析了基于生成式对抗网络、自回归模型和扩散概率模型的最新进展。接着,深入探讨可控图像生成技术,突出了通过布局、线稿等附加信息以及基于视觉参考的方法来为创作者提供精确控制的技术现状。随着图像生成技术的革新和应用,生成图像的安全性问题逐渐浮现。而预先审核和过滤的技术手段已难以满足实际需求,故亟需实现生成内容的溯源来进行监管。因此,本文进而对生成图像溯源技术进行研讨,并聚焦水印技术在确保生成内容可靠性和安全性方面的应用。依据水印嵌入的流程节点,首先将现有的水印相关的生成图像溯源方法归为无水印嵌入的生成图像溯源、水印前置嵌入的生成图像溯源、水印后置嵌入的生成图像溯源以及联合生成的生成图像溯源并进行详细分析,然后介绍针对生成图像的水印攻击研究现状,最后对生成图像溯源技术进行总结和展望。鉴于视觉内容生成在质量和安全上的挑战,旨在为研究者提供一个视觉内容生成与溯源的系统研究视角,以促进数字媒体创作环境的安全与可信,并引导未来相关技术的发展方向。

关键词：人工智能内容生成(AIGC) 视觉内容生成可控图像生成生成内容安全生成图像溯源

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基于“少数派报告”的协同过滤模型

中国管理科学 2024年第3期32卷 20-27页

作者：黄晓宇鲜征征杨雄文左文明华南理工大学电子商务系广东广州510006 人工智能与数字经济广东省实验室(广州) 广东广州510335 广东金融学院互联网金融与信息工程学院广东广州510520 华南理工大学法学院广东广州510006

协同过滤是在线推荐系统最重要的组成模块之一,为实现面向用户的个性化广告投放功能提供了关键的技术支持。然而,在协同过滤系统的具体实现中,研究者却不加区分地对所有目标用户都使用相同的训练流程。较之“个性化的预测结果”的预期,... 详细信息

协同过滤是在线推荐系统最重要的组成模块之一,为实现面向用户的个性化广告投放功能提供了关键的技术支持。然而,在协同过滤系统的具体实现中,研究者却不加区分地对所有目标用户都使用相同的训练流程。较之“个性化的预测结果”的预期,上述“一般化的训练过程”使得结果模型相对于待预测的目标过于普适,缺乏必要的针对性。本文提出一个“以个性化的训练过程得到个性化的预测结果”的协同过滤预测模型(MORE):对给定的目标用户,MORE将使用弹性网络模型(Elastic Net),从现有的用户全集中选出若干用户构成与之对应的“专家”集合,并基于目标用户与专家已有的评分,生成对目标用户的缺失评分的预测。本文报告了MORE在不同的协同过滤预测模型上的应用结果,在真实评分数据集上的实验结果表明,较之使用全量数据训练得到的预测模型,基于MORE的模型有更好的表现。

关键词：协同过滤稀疏选择个性化推荐系统

Reconfigurable Mechanochromic Patterns into Chameleon-Inspired Photonic Papers

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Research 2022年第4期2022卷 421-433页

作者： Dongpeng yang yang Hu Dekun Ma Jianping Ge Shaoming {2. school of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdongUniversityof TechnologyGuangzhou510006China Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process Shaoxing UniversityShaoxing 312000China school of Chemistry and Molecular Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes East China Normal UniversityShanghai200062China

Photonic crystal(PC)patterns have shown wide applications in optical devices,information encryption,anticounterfeiting,***,it is stll a great challenge to reconfigure the PC patterns once ***,a new strategy is presented to reconfigure self-recordable PC patterns by printing local patterns into the chameleon-inspired PC papers using the phase change material(PCM)as ink and then erasing the patterns in *** and high-resolution(2. and 75μm for dot and lines,respectively)patterns can be eficiently and repeatedly *** addition,the photonic patterns based on the PC paper and PCM combinations are gifted with mechanochromic characteristics and can show programmable and reversible color change under *** high melting point of the ink,nonclosely packed structures of the PC paper,and the similar solubility parameter of PC paper,PCM,and ethanol are the keys for all these *** work offers a simple,flexible,efficient way to reconfigure PC patterns with mechanochromic properties and could open up exciting applications for novel hand-operation-based anticounterfeiting and opticaldevices.

关键词： packed repeatedly printing