Results 41 to 50 of about 886,824 (174)
ABSTRACT Despite extensive research on policy diffusion, the ways in which policy attention influences this process remain underexplored. This study addressed this gap by distinguishing between three types of policy attention—political speeches, policy issuance and field visits—and investigating their differential impacts when delivered by central and ...
Xiangning Chen, Yahua Wang
wiley +1 more source
Emotion and the Advocacy Coalition Framework: An Affective Dynamics Perspective
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
复杂场景的大范围、高分辨率纹理的快速漫游是虚拟现实、GIS、仿真等领域的关键技术与难点。DEM是对地形地貌的数字描述和模拟,利用DEM数据生成可视化地形,可以更好的描述特定区域的地形特征,通过对特定区域中模型的纹理生成和映射,配合光照、大气等区域内自然场景的建模技术,可生成较为逼真的真实场景。基于OpenGL编程进行DEM地形可视化是实现地形实时漫游的方法之一,利用层次细节模型降低场景复杂度以提高漫游帧速率是该类系统中的常用方法,由于场景复杂度问题,不同的系统在具体算法实现中采用的方法也不尽相同 ...
周可法, 赵庆展, 张清
core
在地貌信息熵计算方法和涵义讨论的基础上,计算了豫西中部山地面积大于100 km2各流域的地貌信息熵值,进而分析了豫西中部山地的地貌演化阶段,得出以下结论地貌演化处于壮年期和老年期的过渡阶段;各流域坡面形状多为下凹形为主,但山地整体的坡面形状近于直线形.
管华
doaj
ABSTRACT Biodegradable Zn‐based alloys are promising candidates for temporary implants, yet excessive Zn2+ release during degradation may induce cytotoxicity and adverse tissue responses. In this study, Zn‐xBa alloys (x = 0.1 wt%, 0.5 wt%, 1.0 wt% and 3.0 wt%) were developed to achieve controlled corrosion behaviors with improved biocompatibility.
Liu‐Dang Fang +9 more
wiley +1 more source
The Experimental Study of Topographic Map Teachingin High School
[[abstract]]過去數十年來,國內普遍忽略中小學地圖教育的重要性,以致學生讀圖能力低落,地形圖的相關知識也僅侷限在模式型等高線,如何提升學生使用地形圖的能力,成爲地理教育工作者的重要課題。因此,本文擬針教師如何教地形圖以及學生判讀地形圖的能力如何受教材的影響。研究發現。結果發現,教師的教學方法有四大類,如活動式、類比式與類推式、命題式、圖說式等;學生判讀地形圖的能力,受到地圖是否納入正式教材的影響,正式教材的學生表現較補充教材的學生佳。[[abstract]]The K-l2 education
李明燕
core
Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
wiley +1 more source
[[abstract]]冰凍為高山與冰緣氣候中,常見的環境因子,而凍融作用亦是其中最重要的地形營力。台灣高山地區易發生凍融風化與寒凍潛移等作用,對其地形演育甚為重要。本研究採集南湖大山土壤樣本於實驗室模擬凍融作用,並蒐集南湖大山與合歡山不同深度之地溫資料,推估凍融作用的規模與頻率,及繪製高山地區之冰緣地貌圖。 凍融模擬實驗結果顯示,土壤中不同的含水量,對於土壤凍融溫度影響不明顯,而可以觀察到土壤水有冰水共存的現象。由南湖大山地溫觀測站的資料顯示,地表下兩公分處之凍融循環頻率為274次 ...
陳毅青; 林俊全
core
DEM在旱耕地荒漠化评价中的应用——以武威,古浪二市(县)为例
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
This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source

