Results 61 to 70 of about 62,130 (172)

Using LICOM to estimate roles of topography near the Luzon Strait on Kuroshio intrusion [PDF]

open access: yes, 2016
基于观测资料、卫星高度计资料和LICOM2.0模式一序列的地形敏感性试验,本论文首先划分吕宋海峡附近黑潮入侵方式,然后利用地形敏感性试验评估吕宋海峡附近地形对黑潮入侵的作用。主要研究成果如下: (1)基于1993–2013年AVISO卫星高度计资料,本论文定义了一个双指数(Double-index)并划分出吕宋海峡附近3种典型的黑潮入侵类型:黑潮暖涡路径、黑潮冷涡路径和黑潮泄漏路径,这展示了吕宋海峡附近黑潮与中尺度涡之间典型的空间配置关系。因此,双指数可以较好地区分黑潮入侵路径。 (2 ...
黄志达
core  

Emotion and the Advocacy Coalition Framework: An Affective Dynamics Perspective

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Despite extensive evidence that emotion and cognition are deeply intertwined, the Advocacy Coalition Framework (ACF) lacks an analytically independent emotional mechanism in its causal architecture—an omission that may be particularly consequential in policy subsystems structured around morally charged, identity‐laden policy disputes.
Moshe Maor
wiley   +1 more source

Comparative Evaluation of Chemical and Physical Expansive Agents in Cemented Paste Backfill: Expansion Behavior, Mechanical Response, and Microstructural Mechanisms

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo   +5 more
wiley   +1 more source

DEM在旱耕地荒漠化评价中的应用——以武威,古浪二市(县)为例

open access: yesShuitu Baochi Xuebao, 2000
荒漠化在干旱地区最为普遍,旱耕地的存在加速了荒漠化发展。DEM是通过计算机系统产生的数字高程模型,进行地形分析,模拟地貌形态,直观显示地貌特征和地形部位。在ESRI地理信息系统的支持下,通过数字化地形等高级图,产生数字高程模型(DEM),并通过DEM,计算派生出坡度图,以其作为基本图件,结合土地利用图和相关资料,用地理信息系统进行综合分析,提取旱耕地的信息。
丁峰 高志海
doaj  

From Douyin Shop to TikTok Shop: The Platformized Supply Chain, Spatialized Business Model, and Regional Partnership in Cross‐Border e‐Commerce

open access: yesPolicy &Internet, Volume 18, Issue 1, March 2026.
ABSTRACT This article investigates how TikTok Shop reproduces the e‐commerce model of Douyin Shop against a backdrop of divergent regulatory challenges and geopolitical distrust. One of the strategic changes we observe in TikTok Shop is the shift of consumer goods suppliers from local merchants to China‐based sellers.
Shuaishuai Wang, Jing Meng, Yitong Li
wiley   +1 more source

不同人为管理措施坡面地表微地形变化特征及其对渗流的响应

open access: yesShuitu Baochi Xuebao, 2023
探究不同人为管理措施坡耕地地表微地形变化特征,阐明地表微地形变化对渗流响应,以期为紫色土坡耕地水土流失的有效防治与人为管理措施的合理布设提供科学依据。以平整坡面、穴播坡面和垄作坡面为研究对象,基于室内人工模拟渗流试验,开展5°和15°紫色土坡面微地形变化特征研究。结果表明:(1)渗流试验前后平整坡面、垄作坡面和穴播坡面微地形半方差函数在0~135°和180°~315°方向上呈中心对称分布,随地表坡度的增加分布范围逐渐缩小,且具有明显的方向性。渗流条件下,平整坡面和穴播坡面微地形各向异性的变化趋势较为一致,
杨斐雄   +3 more
doaj  

[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

Reconstruction of ice sheet change on the Soya Coast, East Antarctica, based on detailed topographic analyses using UAV-SfM survey [PDF]

open access: yes, 2016
第7回極域科学シンポジウム:[OG] 地圏11月29日(火)国立極地研究所 3階 ...
土井 浩一郎   +3 more
core   +1 more source

Boosting Piezoelectric Voltage Constant in 3D‐Interconnected PZNNT Porous Piezoceramics via Pore Architecture Engineering

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng   +7 more
wiley   +1 more source

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

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