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Exploring the complex trade-offs and synergies of global ecosystem services

Environmental Science and Ecotechnology 2024年第5期21卷 141-148页

作者： Jinnan Wang Wenjun Wu Meng Yang yueming gao Jiacheng Shao Weishan Yang Guoxia Ma Fang Yu Nan Yao Hongqiang Jiang State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing100041China The Center for Eco-Environmental Accounting Chinese Academy of Environmental PlanningBeijing100041China The Innovation Center for Eco-environment-Oriented Development Chinese Academy of Environmental PlanningBeijing100041China School of Environment Beijing Normal UniversityBeijing100875China College of Environmental&Resource Sciences Zhejiang UniversityHangzhou310058China College of Economics&Management Northwest A&F UniversityYangling712100China

The trade-off and synergy relationship of ecosystem services is an important topic in the current *** value of each service provided by the ecosystem is substantially affected by human activities,and conversely,its changes will also affect the relevant human *** to varying tradeoffs among ecosystem services and synergies between them that can either increase or decrease,it is difficult to optimize multiple ecosystem services simultaneously,making it a huge challenge for ecosystem *** study firstly develops a global Gross Ecosystem Product(GEP)accounting *** uses remote sensing data with a spatial resolution of 1 km to estimate the ecosystem services of forests,wetlands,grasslands,deserts,and farmlands in 179 major countries in *** results show that the range of global GEP values is USD 112e197 trillion,with an average value of USD 155 trillion(the constant price),and the ratio of GEP to gross domestic product(GDP)is *** tradeoffs and the synergies among different ecosystem services in each continent and income group have been further *** found a correspondence between the income levels and the synergy among ecosystem services within each *** specific ecosystem services,there are strong synergies between oxygen release,climate regulation,and carbon sequestration services.A trade-off relationship has been observed between flood regulation and other services,such as water conservation and soil retention services in low-income *** results will help clarify the roles and the feedback mechanisms between different stakeholders and provide a scientific basis for optimizing ecosystem management and implementing ecological compensation schemes to enhance human well-being.

关键词： Ecosystem services Biophysical quantity Monetary value Trade-off Synergy

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基于多模型协同的舰船目标检测

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航空学报 2024年第14期45卷 73-83页

作者：肖欣林施伟超郑向涛高跃明卢孝强福州大学物理与信息工程学院福州350108

随着遥感成像技术的不断进步,遥感图像的舰船目标检测已成为确保海上运输安全和效率的关键手段,对海上交通、环境保护及国家安全至关重要。然而,由于舰船目标尺度差异大、背景复杂等问题,现有单一检测模型的方法过度依赖训练数据,无法... 详细信息

随着遥感成像技术的不断进步,遥感图像的舰船目标检测已成为确保海上运输安全和效率的关键手段,对海上交通、环境保护及国家安全至关重要。然而,由于舰船目标尺度差异大、背景复杂等问题,现有单一检测模型的方法过度依赖训练数据,无法适应尺度多变的舰船目标。提出了一种多模型协同训练的框架,利用多个已训练好的舰船检测模型作为辅助网络,通过知识迁移的方式辅助优化目标数据的主网络。首先,通过三元关系约束建立辅助网络与主网络间的分布知识传递;其次,采用软标签引导策略整合辅助网络中的标签知识,提高舰船检测的准确性。实验结果表明:相较于现有主流方法,所提方法在DOTA和xView数据集上展示了较好的性能,克服了单一模型的局限性,为遥感图像的目标检测提供了新的解决思路。

关键词：舰船识别目标检测多尺度表达多模型协同知识融合

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Changes in nerve microcirculation following peripheral nerve compression

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Neural Regeneration Research 2013年第11期8卷 1041-1047页

作者： yueming gao Changshui Weng Xinglin Wang Rehabilitation Medicine Center General Hospital of Chinese PLA Department of Rehabilitation Medicine South Building General Hospital of Chinese PLA

Following peripheral nerve compression, peripheral nerve microcirculation plays important roles in regulating the nerve microenvironment and neurotrophic substances, supplying blood and oxygen and maintaining neural conduction and axonal transport. This paper has retrospectively analyzed the articles published in the past 10 years that addressed the relationship between peripheral nerve compression and changes in intraneural microcirculation. In addition, we describe changes in different peripheral nerves, with the aim of providing help for further studies in peripheral nerve microcirculation and understanding its protective mechanism, and exploring new clinical methods for treating peripheral nerve compression from the perspective of neural microcirculation.

关键词： neural regeneration peripheral nerve injury peripheral nerve microcirculation nerve compression nerve blood flow sciatic nerve grants-supported paper neuroregeneration

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融合多种语音特征参数的阈下抑郁风险预测

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复旦学报（自然科学版） 2024年第3期63卷 344-350页

作者：何婉婷林琴韵杨旭东严洪立徐攀杨朝阳高跃明福州大学先进制造学院福建泉州362251 福州大学健康信息智能感知国际联合实验室福建福州350108 福建中医药大学中医学院福建福州350122 福州大学物理与信息工程学院福建福州350108

声纹识别为阈下抑郁辨识诊断和干预评价提供客观的参考依据。本研究采用不同言语方式(读/a/音、文本朗读、图片描述、自由访谈)和情绪刺激(正性、中性、负性),融合韵律、音色、频谱、共振峰等4类语音特征,提取出Mel频率倒谱系数、音速... 详细信息

声纹识别为阈下抑郁辨识诊断和干预评价提供客观的参考依据。本研究采用不同言语方式(读/a/音、文本朗读、图片描述、自由访谈)和情绪刺激(正性、中性、负性),融合韵律、音色、频谱、共振峰等4类语音特征,提取出Mel频率倒谱系数、音速、基频、共振峰等16种特征参数,利用随机森林分类算法建立阈下抑郁风险预测模型,并与其他分类器对比。结果表明:未融合特征前图片描述和自由访谈的识别率高于其他言语方式,其中正性刺激的预测结果更好,准确率达72.50%和67.39%;融合特征后读/a/音和自由访谈分别获得了93.00%和85.00%的高准确率。由此可知,融合特征后模型学习到的语音信息不仅仅包含被试者的情感状态,也包含特征类型间的相互关系;读/a/音和自由访谈保留更多的声道信息,其中读/a/音发声持久、音强持续,自由访谈语量和特征全面,接近自然言语。本文结果对阈下抑郁早期风险预测有一定的参考意义。

关键词：阈下抑郁语音特征分类器声纹识别

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Effect of swimming training on neural microcirculation in rats with sciatic nerve compression A study based on laser Doppler flowmetry

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Neural Regeneration Research 2010年第19期5卷 1510-1514页

作者： yueming gao Xinglin Wang Senyang Lang Lining Zhang Wei Suo Tianyu Jiang Jingping Fan Department of Physical Therapy General Hospital of Chinese PLA Beijing 100853 China

Microcirculation of the peripheral nerve is necessary for neural growth and regeneration. However, technical limitations have limited studies in this area. The few studies conducted have concerned active exercise effects on microcirculation of the peripheral nerve. Using an animal experiment, this study evaluated the effect of swimming training on microcirculation of injured peripheral nerve by laser Doppler flowmetry. The results showed that the blood vessel at the distal end of the peripheral nerve was the main blood supply for the nerve, and the internal blood supply for the nerve had strong compensatory ability. Swimming training promoted the functional recovery of rats with sciatic nerve injury and the regeneration of myelin sheath and blood vessels, but had no impact on neural blood flow.

关键词： sciatic neuropathy angiogenesis swimming autogenic training blood flow velocity laser Doppler flowrnetry

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Comparative Study on Galvanic-Coupled Intrabody Channel Characteristic Measurement Methods

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Journal of Beijing Institute of Technology 2022年第1期31卷 30-38页

作者： Yangrong Wen Fengjie Lin yueming gao Sio Hang Pun Mang I Vai Min Du Physics and Information Engineering Fuzhou UniversityFuzhou 350108China State Key Laboratory of Analog and Mixed-Signal VLSI University of MacaoMacao 999078Macao SARChina.

The galvanic-coupled intrabody communication(GCIBC)uses the human body as the channel for data *** signal flow through different paths within different measure-ment schemes,resulting in distinct deviations in the experimental *** method completely uses human body channel to transmit low-power signals,and has good anti-interference ***,for a long time,the channel research of GCIBC has not determined a set of recog-nized and accurate measurement methods and ***,few researcher analyze the dif-ferences and principles between different measurement *** paper aims at three com-monly used measurement *** the equivalent schematic diagrams of three measure-ment schemes:direct measurement,using high-precision differential probe and using *** sig-nal return paths generated by three measurement methods are analyzed,the impedance matching and energy transmission efficiency are *** to the analysis,the empirical expres-sions in different cases are *** mechanism between the channel measurement results gener-ated by the set experimental configuration and the comparison experiment is *** compar-ison experiment with complete floating measurement is carried out as a reference to verify the pro-posed *** measurement error caused by different experimental configurations is *** study can provide a reference opinions for the experimental error analysis of GCIBC research in the future,and provide suggestions for the selection of experimental configuration.

关键词： galvanic-coupled intrabody communication channel characteristic measurement atten-uation return path

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A Comparative Study of the Electrodes Gels’Electrical Properties in the Measurement Issues of Intrabody Communication

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Journal of Beijing Institute of Technology 2022年第1期31卷 71-80页

作者： Fengjie Lin Ziliang Wei Jiejie Yang Yangrong Wen yueming gao Sio Hang Pun Mang I Vai Min Du College of Physics and Information Engineering Key Laboratory of Medical Instrumentation&Pharmaceutical Technology of Fujian ProvinceFuzhou UniversityFuzhou 350108China State Key Laboratory of Analog and Mixed-Signal VLSI University of MacaoTaipaMO 999078China

Intrabody communication(IBC)technology is becoming progressively more standard-ized due to its low power consumption and high security features incorporated into the third phys-ical layer of the IEEE 802.15.6 *** then,there are still many challenges in normalizing the measurement issues of IBC.A major concern that should not be overlooked is the electrodes in the IBC,especially the popular use of gel *** the channel measurements,gel electrodes are commonly employed to improve the signal-to-noise ratio and prevent electrodes from falling *** this paper,a comparative study of the electrical properties of gel was investigated during the measurement of human channel characteristics and to clarify the differences of ***,the basis of electrostatic field pole plate measurements and electromagnetic theory were introduced to interpretate how the relative permittivity and conductivity of different gels will influence the meas-urement *** the in vivo experiments with different gel or dry electrodes were performed to compare the differences induced by the *** results indicate that the influence of the gel on the human channel measurement is mainly concentrated below 400 kHz(the attenuation is re-duced by 16.7 dB on average),and the stability of the permittivity and conductivity of the gel has a direct impact on the stability of its measurement of the human *** result may provide a meaningful reference for the standardization of electrode usage in IBC.

关键词： intrabody communication channel characteristic measurement gel electrodes permit-tivity conductivity

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Pore shrinkage capacity of Shajiang black soils(Vertisols)on the North China Plain and its influencing factors

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Pedosphere 2024年第3期34卷 620-630页

作者： yueming CHEN Zhongbin ZHANG Lei gao Zichun GUO Peng XIONG Fahui JIANG Xinhua PENG State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) University of Chinese Academy of Sciences Beijing 100049(China) Jiangxi Agricultural University Nanchang 330045(China)

Different pore sizes present different pore shrinkage capacities in a nonrigid ***,the shrinkage capacities of different pore sizes and their influencing factors are not *** aimed to quantify the shrinkage capacities of different pore sizes(large pores,>50μm;medium pores,0.2-50μm;fine pores,<0.2μm)and determine how soil properties impact soil shrinkage capacity at the regional *** sampling transects from west to east(360 km long,35 samples)and from north to south(190 km long,29 samples)were selected to investigate soil shrinkage capacity and physicochemical properties of at0-20 cm depth in the Vertisol(locally known as Shajiang black soil)region of the North China *** results showed that soil total shrinkage capacity,indicated by the coefficient of linear extensibility(COLE),had a mean value of 0.041-0.051 in the west-east and north-south *** pores had higher pore shrinkage index(PSI)values(0.103-0.109)than medium(0.077-0.096)and fine(0.087-0.091)*** PSI of fine pores showed a fluctuating increasing trend from northwest to southeast,and the fine pore shrinkage capacity determined the COLE(r^(2)=0.789,P<0.001).The PSI of large pores had a significant relationship with soil bulk density(r=0.281,P<0.05)and organic carbon(r=-0.311,P<0.05),whereas those of medium and fine pores were correlated with soil clay content(r=0.381 and 0.687,respectively,P<0.001).In addition,the PSI of fine pores was also correlated with montmorillonite content(r=0.387,P<0.01).It can be concluded that the PSI of large pores is related to anthropogenically influenced soil properties with low stability,whereas those of medium and fine pores are related to pedogenic *** high variability in anthropogenic and pedogenic factors explains the spatial pattern of Vertisol shrinkage capacity on the North China Plain.

关键词： clay content coefficient of linear extensibility pore shrinkage index soil structure spatial distribution swelling

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Spatial and Temporal Distribution Characteristics of Solar Energy Resources in Tibet

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Energy Engineering 2024年第1期121卷 43-57页

作者： Yanbo Shen Yang gao yueming Hu Xin Yao Wenzheng Yu Yubing Zhang Public Meteorological Service Center China Meteorological AdministrationBeijing100081China Center forWind and Solar Energy Resources China Meteorological AdministrationBeijing100081China School of Applied Meteorology Nanjing University of Information Science&TechnologyNanjing210044China School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjing210044China

The Tibet Plateau is one of the regions with the richest solar energy resources in the *** the process of achieving carbon neutrality in China,the development and utilization of solar energy resources in the region will play an important *** this study,the gridded solar resource data with 1km resolution in Tibet were obtained by spatial correction and downscaling of SMARTS *** this basis,the spatial and temporal distribution characteristics of solar energy resources in the region in the past 30 years(1991–2020)are finely evaluated,and the annual global horizontal radiation resource is *** results show that:1)The average annual global horizontal radiation amount in Tibet is 1816 kWh/m^(2).More than 60%of the area belongs to the“Most abundant”(GHI≥1750 kWh/m^(2))area of China’s solar energy resources category A,and nearly 40%belongs to the“Quite abundant”(1400≤GHI<1750)area of China’s solar energy resource category B.2)In space,the solar energy resources in Tibet increased gradually from north to south and from east to ***,Central and Eastern Shigatse,Shannan,and Southwestern Ali are the most abundant cities,with a maximum annual radiation level of 2189 kWh/m2.3)In terms of time,the total horizontal radiation in Tibet was the highest in May and the lowest in December.74%of the total area belongs to the“Very stable”(R_(w)≥0.47)area of solar resource stability category A,and 26%belongs to the“stable”(0.36≤R_(w)<0.47)area of solar resource stability category *** energy resources in the region show the characteristics of both strong and *** solar energy resources in the region have shown a fluctuating downward trend over the past 30 years,with an average decline of about 12.86(kWh/m2)per decade.4)In terms of solar radiation resources reaching the earth’s surface,the theoretical total amount of annual horizontal radiation in Tibet is about 240.07 billion tons of standard coal or 222.91 billion kilowatts on average.

关键词： Tibet solar resource spatiotemporal distribution

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Investigation and Comparison of Two Models in Galvanic Coupling Intra-body Communications

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China Communications 2010年第4期7卷 35-40页

作者： PUN Siohang gao yueming WONG Kuokkit MAK Pengun VAI Mangi DU min Department of Electrical and Electronics Engineering Faculty of Science and Technology Universi（y of Macao Macao China Key Laboratory of Medical Instrumentation ＆ Pharmaceutical Technology Fujian Province China Institute of Precision Instrument Fuzhou University Fuzhou China

Intra-body communication (IBC) is a new,emerging,short-range and human body based communication *** is a technique to network various devices on human body,by utilizing the conducting properties of human tissues,suitable for currently fast developing Body area network (BAN)/Body sensor network (BSN).IBC is believed to have advantages in power consumption,electromagnetic radiation,interference from external electromagnetic noise,security,and restriction in spectrum *** this article,the authors develop two models,which are analytical and empirical approaches,for comparing the performance and accuracy of IBC on a human *** in vivo experiment of five volunteers,both models basically match with the experimental result with equivalent circuit model superior than electromagnetic model in term of maximum error.

关键词： Intra-body Communication Analytical Model Empirical circuit model

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