Results 61 to 70 of about 1,120,524 (172)

[Establishment of a topographic map assessment system for facial and cervical wounds and scars of burn patients based on the Delphi method]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023
Bian RH   +10 more
europepmc   +1 more source

Transboundary Policy Perspectives on Migratory Bird Stopover Sites Conservation: A Case Study of Yancheng (China) and Geelong (Australia) 迁徙鸟类停歇地保护的跨境政策视角 —— 以中国盐城与澳大利亚吉朗为例

open access: yesWildlife Letters, Volume 4, Issue 3, Page 149-159, September 2026.
Migratory shorebirds traveling the East Asian–Australasian Flyway face systemic policy fragmentation and habitat disconnection between China (coordination challenges and renewable energy conflicts) and Australia (federal governance fragmentation). This study proposes a transboundary conservation framework to fill this gap.
Yarui Wang
wiley   +1 more source

基于GIS地貌形态特征分形信息维数与等高距关系研究

open access: yesShuitu Baochi Xuebao, 2005
首先论述了以地理信息系统(GIS)为平台,基于分形信息维数(FID)表征地貌形态特征的原理和方法.采用Avenue语言开发了基于ArcGIS环境下地貌形态特征FID计算软件;并以长江流域白水溪小流域为例,进行了不同等高距下地貌形态特征FID的计算,通过对FID与等高距耦合关系的深人分析,结果表明:基于FID不仅可以对流域地貌形态特征进行宏观性、综合性定量表征,而且能够实现不同等高距下流域地貌形态特征的相互转换,有利于与流域形态特征相关联的水文、水土流失过程的动态模拟.同时可实现对现有地形数据的充分挖掘 ...
朱永清 李占斌 崔灵周 鲁克新 李鹏
doaj  

HyFrame‐AI: A Conceptual Readiness Framework for Artificial Intelligence Adoption in Sub‐Saharan African Healthcare

open access: yesWorld Medical &Health Policy, Volume 18, Issue 3, September 2026.
ABSTRACT The integration of artificial intelligence (AI) in healthcare is rapidly evolving, offering immense potential to transform service delivery, diagnostics, and health systems governance. However, Sub‐Saharan Africa faces significant readiness challenges due to limited infrastructure, capacity gaps, and fragmented digital strategies.
Said Baadel   +3 more
wiley   +1 more source

基于探地雷达的电磁散射成像技术对杆塔接地体的腐蚀检测

open access: yesDianci bileiqi, 2016
利用时域有限分析法,计算了在正弦平面波入射的条件下,圆柱形接地导体与有棱边角形状导体的电磁散射的散射场,分析了探地雷达图像是否可以区别圆柱形导体和因腐蚀形成的不规则导体。结果表明不同形状的接地体,其电磁散射场的幅值和相位均有明显不同特征,探地雷达图像可有效反映圆钢接地体腐蚀点处形状的变化。
梁皓澜   +4 more
doaj  

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

open access: yesFunctional Ecology, Volume 40, Issue 9, Page 2726-2736, September 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop   +8 more
wiley   +1 more source

青藏高原北缘公格尔山地区地形梯度的剖析

open access: yes, 2009
本文以青藏高原北缘西昆仑山脉的公格尔山地区为试验区域,基于SRTM-DEM数据,采用线状地形剖面和带状地形剖面的研究方法,对试验区从公格尔山顶到塔里木盆地的地形梯度进行了研究,并探讨了地形梯度与隆升过程之间的关系。研究结果表明:(1)线状地形剖面清晰直观,操作简单;带状剖面法能较好地反映区域的地形起伏状况。若将两种方法联合起来共同进行区域地形研究,则会获得更好效果。(2)从塔里木盆地到公格尔山顶,地形抬升共分3个梯度:分别是从海拔高度2 000m左右上升到约4 500m,从约4 500m上升到将近6 ...
赵尚民, 程维明, 陈曦, 周成虎
core  

土地利用/土地覆被镶嵌体的分形结构模型研究

open access: yesShuitu Baochi Xuebao, 2004
运用分形理论对四川省汶川县土地利用/土地覆被镶嵌体景观类型的分维值进行计算,并讨论了各种景观类型的分维性质。结果表明:土地利用/土地覆被镶嵌体具有统计意义上的自相似性,是一种随机分形结构;景观类型的分维值越大,其形态越复杂,反之越简单。SI(稳定性指数)>0,表示景观在其形态复杂状态下的一种稳定性,SI越大,该景观形态越稳定;反之亦然。SI<0,表示景观在其形态简单状态下的一种稳定性,SI越小,该景观形态越稳定;反之亦然。景观类型的分维值随时间变化而增大,该景观的形态变得复杂,反之 ...
邵怀勇 仙巍 马泽忠 李爱农 周万村
doaj   +2 more sources

Ten rules for using evidence to guide ecosystem restoration

open access: yesJournal of Applied Ecology, Volume 63, Issue 9, September 2026.
These 10 rules provide a guidance framework to put into action the best available evidence, ensuring that restoration benefits people and nature. We highlight the importance of knowledge brokering systems in this process, effectively informed and empowered to fulfil their emerging role across existing institutions and new ones dedicated to Science ...
Rafael B. Chaves   +12 more
wiley   +1 more source

地球概念的形成与地理学范式的建立

open access: yes, 1996
本文系统地考察了早期人们对地球形状的认识和球形地球概念的形成,首次提出以地球概念为核心而形成的地理学理论体系和实践规范是地理学最早的范式。本文还分析了地理学范式形成的社会和文化背景 ...
王蒲生, 张九辰
core  

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