检索结果-南通市图书馆

Spatial differences of Sustainable Development Goals(SDGs)among counties(cities)on the northern slope of the Kunlun Mountains

引用

Regional Sustainability 2024年第1期5卷 1-10页

作者： WANG Tao zHOU daojing FAN Jie School of Economics and Management University of Chinese Academy of SciencesBeijing100190China Xinjiang Arts University Urumqi830049China Institutes of Science and Development Chinese Academy of SciencesBeijing100190China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China

The county(city)located on the northern slope of the Kunlun Mountains is the primary area to solidify and extend the success of Xinjiang Uygur Autonomous Region,China in poverty *** Sustainable Development Goals(SDGs)are intertwined with the concerted economic and social development of Xinjiang and the objective of achieving shared prosperity within the *** study established a sustainable development evaluation framework by selecting 15 SDGs and 2. secondary indicators from the United Nations’*** aim of this study is to quantitatively assess the progress of SDGs at the county(city)level on the northern slope of the Kunlun *** results indicate that there are substantial variations in the scores of SDGs among the nine counties and one city located on the northern slope of the Kunlun *** high scores of SDGs are observed in the central and eastern regions,whereas lower scores are prevalent in the western *** scores of SDGs,in descending order,are as follows:62.2. for Minfeng County,54.2. for Hotan City,50.2. for Qiemo County,42.54 for Moyu County,41.56 for Ruoqiang County,41.39 for Qira County,39.86 for Lop County,38.2. for Yutian County,38.10 for Pishan County,and 36.87 for Hotan *** performances of SDGs reveal that Hotan City,Lop County,Minfeng County,and Ruoqiang County have significant sustainable development capacity because they have three or more SDGs ranked as green ***,Hotan County,Moyu County,Qira County,and Yutian County show the poorest performance,as they lack SDGs with green *** is important to establish and enhance mechanisms that can ensure sustained income growth among poverty alleviation beneficiaries,sustained improvement in the capacity of rural governance,and the gradual improvement of social security *** measures will facilitate the effective implementation of ***,this study offers a valuable support for governmental authorities and relevant departments i

关键词： Sustainable Development Goals(SDGs) Northern slope of the Kunlun Mountains Poverty alleviation Arid lands Sustainable development capacity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On Designs of Decentralized Reputation Management for Permissioned Blockchain Networks

引用

Computer Modeling in Engineering & Sciences 2024年第5期139卷 1755-1773页

作者： Jinyu Chen Long Shi Qisheng Huang Taotao Wang daojing He School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing210094China School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhen518055China College of Electronics and Information Engineering Shenzhen UniversityShenzhen518060China School of Computer Science and Technology Harbin Institute of TechnologyShenzhen518055China

In permissioned blockchain networks,the Proof of Authority(PoA)consensus,which uses the election of authorized nodes to validate transactions and blocks,has beenwidely advocated thanks to its high transaction throughput and fault ***,PoA suffers from the drawback of centralization dominated by a limited number of authorized nodes and the lack of anonymity due to the round-robin block proposal *** a result,traditional PoA is vulnerable to a single point of failure that compromises the security of the blockchain *** address these issues,we propose a novel decentralized reputation management mechanism for permissioned blockchain networks to enhance security,promote liveness,and mitigate centralization while retaining the same throughput as traditional *** paper aims to design an off-chain reputation evaluation and an on-chain reputation-aided ***,we evaluate the nodes’reputation in the context of the blockchain networks and make the reputation globally verifiable through smart ***,building upon traditional PoA,we propose a reputation-aided PoA(rPoA)consensus to enhance securitywithout sacrificing *** particular,rPoA can incentivize nodes to autonomously form committees based on reputation authority,which prevents block generation from being tracked through the randomness of reputation ***,we develop a reputation-aided fork-choice rule for rPoA to promote the network’s ***,experimental results show that the proposed rPoA achieves higher security performance while retaining transaction throughput compared to traditional PoA.

关键词： Blockchain reputation management PoA throughput security decentralization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in ice avalanches on the Tibetan Plateau

引用

Journal of Mountain Science 2024年第6期21卷 1814-1829页

作者： TANG Minggao LI Guang zHAO Huanle XU Qiang WU Guangjian YANG Wei GUO daojing State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Environment and Civil Engineering Chengdu University of TechnologyChengdu 610059China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China

As some of the greatest natural disasters in the cryosphere,ice avalanches(IAs)seriously threaten lives and cause catastrophic damage to the resource environment,but a comprehensive overview of the state of knowledge on IAs remains *** summarized 63 IAs on the Tibetan Plateau(TP)since the 2.th century,of which,over 2. IAs occurred after the 2.st *** distributions of IAs are mainly concentrated in the southeastern and northwestern TP,and the occurrence time of IAs is mostly concentrated from July to *** highlight recent advances in mechanical properties and genetic mechanisms of IAs and emphasize that temperature,rainfall,and seismicity are the inducing *** failure modes of IAs are summarized into 6 categories by examples:slip pulling type,slip toppling type,slip breaking type,water level collapse type,cave roof collapse type,and wedge failure ***,we deliver recommendations concerning the risk assessment and prediction of *** results provide important scientific value for addressing climate change and resisting glacier-related hazards.

关键词： Ice avalanche Global warming Genetic mechanism Risk assessment Tibetan Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

How territorial function determines CO_(2. emissions in China: An approach of spatial dimension

引用

Journal of Geographical Sciences 2024年第9期34卷 1677-1696页

作者： FAN Jie WANG zheng zHOU daojing GUO Rui CHEN Dong LIU Baoyin LIU Hanchu QIAO Qin WU Jianxiong Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Institutes of Science and Development CASBeijing 100190China School of Architecture&Planning Anhui Jianzhu UniversityHefei 230022China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China

Regional CO_(2. emissions are closely related to their territorial function, which is the major role a region plays in sustainable processes on the earth's surface. Given that China is implementing a top-down emission allocation quota strategy, studying the impact of a territorial function on emissions addresses the research gap from a spatial integration *** investigating the effects of three basic functional territories(urbanization zones(Uz), food security zones(FSz), and ecological security zones(ESz)), horizontal spatial structure and vertical combinations of functional territories on CO_(2. emission patterns in China, we found that functional territory patterns were highly coupled with the spatial distribution of CO_(2. emissions, with a ratio of CO_(2. emissions from Uz–FSz–ESz was stable at around 5:2.1 from 2.00 to 2.17. Spatially, CO_(2. emissions in FSz and ESz were 1.06–2.12.times higher than the average value within 2.0 km from the Uz. As territorial function combination increased with spatial upscaling, the emission characteristics attributable to functional territories became indistinct. The findings above can provide a basis for the long-term prediction of CO_(2. emissions from spatial dimension, support scientific guidance for inter-zone cooperation and classified management of carbon emissions with the major function oriented zones as impetus.

关键词： CO_(2.emission pattern functional territory spatial structure function combination spatial dimension-based analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

功能性近红外光谱技术在脑卒中后抑郁及认知障碍中的应用研究进展

引用

中华神经医学杂志 2024年第2期23卷 202-207页

作者：姬忠敏李道静张爱梅济宁医学院临床医学院济宁272029 济宁医学院附属医院神经内科济宁272029

近年来,脑卒中后抑郁(PSD)、脑卒中后认知障碍(PSCI)等作为常见的脑卒中后相关非运动症状,逐渐受到学者们的关注。功能性近红外光谱(fNIRS)技术作为一种新兴的非侵入性神经成像技术,现已广泛应用于神经系统疾病的研究,其可以通过监测脑... 详细信息

近年来,脑卒中后抑郁(PSD)、脑卒中后认知障碍(PSCI)等作为常见的脑卒中后相关非运动症状,逐渐受到学者们的关注。功能性近红外光谱(fNIRS)技术作为一种新兴的非侵入性神经成像技术,现已广泛应用于神经系统疾病的研究,其可以通过监测脑血液循环和氧合信号的变化,评估患者功能状态和康复情况,目前在PSD及PSCI中的应用研究也越来越多。本文主要围绕fNIRS技术在早期识别PSD、PSCI及探索其神经机制、评估治疗效果等方面的应用研究进展,以及fNIRS技术在临床应用中的优缺点和未来研究方向进行综述,以期为脑卒中患者的情感障碍、认知障碍康复研究提供一些参考借鉴。

关键词：功能性近红外光谱技术脑卒中脑卒中后抑郁脑卒中后认知障碍

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Compressed sensing application in interferometric synthetic aperture radar

引用

Science China(Information Sciences) 2017年第10期60卷 187-203页

作者： Liechen LI daojing LI zhouhao PAN Science and Technology on Microwave Imaging Laboratory Institute of Electronics Chinese Academy of Sciences

A novel interferometric synthetic aperture radar(In SAR) signal processing method based on compressed sensing(CS) theory is investigated in this paper. In SAR image formation provides the scene reflectivity estimation along azimuth and range coordinates with the height information. While surveying the height information of the illuminated scene, the data volume enlarges. CS theory allows sparse sampling during the data acquisition, which can reduce the data volume and release the pressure on the record devices. In SAR system which configures two antennas to cancel the common backscatter random phase in each resolution element implies the sparse nature of the complex-valued In SAR image. The complex-valued image after conjugate multiplication that only a phase term proportional to the differential path delay is left becomes sparse in the transform domain. Sparse sampling such as M-sequence can be implemented during the data acquisition. CS theory can be introduced to the processing due to the sparsity and a link between raw data and interferometric complex-valued image can be built. By solving the CS inverse problem, the magnitude image and interferometric phase are generated at the same time. Results on both the simulated data and real data are presented. In comparison with the conventional SAR interferometry processing results, CS-based method shows the ability to keep the imaging quality with less data acquisition.

关键词： synthetic aperture radar(SAR) interferometric synthetic aperture radar(In SAR) compressed sensing(CS) sparse sampling sparsity in the transform domain

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

“十五五”时期我国生态地区的战略格局与优化

引用

中国科学院院刊 2024年第4期39卷 676-688页

作者：周侃樊杰周道静钱者东虞虎刘汉初张健中国科学院地理科学与资源研究所中国科学院区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049 中国科学院科技战略咨询研究院北京100190 生态环境部南京环境科学研究所南京210042

自主体功能区规划实施以来,重点生态功能区生态空间持续扩张、植被覆盖显著增加,人口呈总量减少、城镇人口增加双向变化,经济社会发展取得显著成效,生态安全屏障功能稳步提升、人地关系紧张状态总体缓解。“十五五”时期,坚持以提供生... 详细信息

自主体功能区规划实施以来,重点生态功能区生态空间持续扩张、植被覆盖显著增加,人口呈总量减少、城镇人口增加双向变化,经济社会发展取得显著成效,生态安全屏障功能稳步提升、人地关系紧张状态总体缓解。“十五五”时期,坚持以提供生态服务或生态产品为主的功能定位,稳固生态系统供给、调节、支持及文化服务规模;同时,更加注重其服务质量提升,形成更具多样性、稳定性、可持续性的生态基底,并兼容绿色化、低碳化的生态产品开发利用功能,形成推进人与自然和谐共生现代化的包容性保护方式。“十五五”时期,生态地区不仅是国土空间新安全格局的重要组成,还将是国土空间新发展格局的关键支撑。优化建议:从战略格局层面,增强生态安全屏障与国土空间开发格局的空间联系与供需互动,筑牢国家生态安全屏障,优化重点生态功能区格局,整合自然保护地体系,严守生态保护红线;以分类提升生态系统服务功能质量、深入实施山水林田湖草沙一体化保护修复、积极培育绿色发展新动能、加快形成精细化分区管控体系、协同推进体制机制改革创新为重点,以高水平保护支撑生态地区高质量发展。

关键词：生态地区重点生态功能区 “十五五”时期战略格局生态文明

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Determining CO_2.consumption from elemental change in soil profiles developed on carbonate and silicate rocks

引用

Chinese Journal Of Geochemistry 2015年第2期34卷 177-193页

作者： daojing Li Hongbing Ji State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of Sciences College of Resource Environment and Tourism Capital Normal University

To further understand the roles of carbonate and silicate rocks in regulating the atmosphere/soil CO_2.evel,the flux of CO_2.consumed by the chemical weathering of silicate and carbonate rocks was determined from the elemental change in soil *** showed that the chemical weathering of carbonate rocks mainly occurred at the rock-regolith interface,and that the further weathering of the residua soil on the carbonate rocks was similar to that of the granite *** weathering of the silicate rocks occurred through the whole ***,CO_2.consumed per volume by the silicate profiles[M_(sr)(CO_2.]and the residues on carbonate rocks[M_(cr)(CO2.]were calculated based on the elemental weathering ***_2.consumed by carbonate protolith[M_(cp)(CO_2.]was calculated from the elemental change at the rock-regolith *** M_(sr)(CO_2. were about tens to thousands orders of magnitude greater than M_(cr)(CO_2..Even so,this demonstrated that the residues on carbonate rocks could be a sink of CO2. on long-term *** M_(cp)(CO_2. was about four times larger than M_(sr)(CO_2.,which demonstrated that carbonate rocks played a more important role in regulating the CO_2.level than the silicate rocks did during the pedogenic process of the profiles.

关键词：硅酸盐岩石碳酸盐岩界面元素土壤剖面二氧化碳消耗化学风化开发

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

联邦学习及其安全与隐私保护研究综述

引用

计算机工程 2024年第5期50卷 1-15页

作者：熊世强何道敬王振东杜润萌江西理工大学信息工程学院江西赣州341000 哈尔滨工业大学(深圳)计算机科学与技术学院广东深圳518055 华东师范大学计算机科学与技术学院上海200062

联邦学习(FL)是一种新兴的分布式机器学习技术,只需将数据留在本地即可通过各方协作训练一个共有模型,解决了传统机器学习中数据难以采集和隐私安全的问题。随着联邦学习技术的应用和发展,相关研究发现联邦学习仍可能受到各类攻击。为... 详细信息

联邦学习(FL)是一种新兴的分布式机器学习技术,只需将数据留在本地即可通过各方协作训练一个共有模型,解决了传统机器学习中数据难以采集和隐私安全的问题。随着联邦学习技术的应用和发展,相关研究发现联邦学习仍可能受到各类攻击。为了确保联邦学习的安全性,研究联邦学习中的攻击方式及相应的隐私保护技术显得尤为重要。首先介绍了联邦学习的背景知识及相关定义,总结概括了联邦学习的发展历程及分类;接着阐述了联邦学习的安全三要素,从基于安全来源和基于安全三要素2.角度分类概述了联邦学习中的安全问题及研究进展;然后对隐私保护技术进行分类,结合相关研究应用综述了联邦学习中安全多方计算(SMC)、同态加密(HE)、差分隐私(DP)、可信执行环境(TEE)4种常用隐私保护技术;最后对联邦学习的未来研究方向进行展望。

关键词：联邦学习数据安全攻击方式隐私保护安全三要素

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Satellite-based Studies on Large-Scale Vegetation Changes in China

引用

Journal of Integrative Plant Biology 2012年第10期54卷 713-728页

作者： Xia zhao daojing zhou Jingyun Fang State Key Laboratory of Vegetation and Environmental Change Institute of Botany the Chinese Academy of SciencesBeijing 100093 China Department of Ecology College of Environmental Sciences and Key Laboratory of Earth Surface Processes of the Ministry of EducationPeking University Beijing 100871 China

Remotely-sensed vegetation indices, which indicate the density and photosynthetic capacity of vegetation, have been widely used to monitor vegetation dynamics over broad areas. In this paper, we reviewed satellite-based studies on vegetation cover changes, biomass and productivity variations, phenological dynamics, desertification, and grassland degradation in China that occurred over the past 2.3 decades. Our review shows that the satellite-derived index （Normalized Difference Vegetation Index, NDVI） during growing season and the vegetation net primary productivity in major terrestrial ecosystems （for example forests, grasslands, shrubs, and croplands） have significantly increased, while the number of fresh lakes and vegetation coverage in urban regions have experienced a substantial decline. The start of the growing season continually advanced in China＇s temperate regions until the 1990s, with a large spatial heterogeneity. We also found that the coverage of sparsely-vegetated areas declined, and the NDVI per unit in vegetated areas increased in arid and semi-arid regions because of increased vegetation activity in grassland and oasis areas. However, these results depend strongly not only on the periods chosen for investigation, but also on factors such as data sources, changes in detection methods, and geospatial heterogeneity. Therefore, we should be cautious when applying remote sensing techniques to monitor vegetation structures, functions, and changes.

关键词： Normalized Difference Vegetation Index (NDVI) phenology remote sensing vegetation coverage vegetation degradation vegetation productivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：