Results 21 to 30 of about 7,628 (119)

Transformation of social‐ecological systems in the Songhua River Basin, Northeast China: Lessons for a more sustainable development

People and Nature, Volume 7, Issue 7, Page 1749-1768, July 2025.
Abstract Social‐ecological systems (SES) are coupled systems formed by the intricate interactions between humans and nature. Our movement towards sustainable lifestyles requires a robust understanding of these interactions. Achieving a sustainable win‐win situation for both social and ecological systems, therefore, necessitates a sound scientific ...
Na Sa, Jinyu Zhao, Xuyang Kou, Shuanning Zheng, Zhaohua Lu, Jan Christoph Axmacher, Weiguo Sang   +6 more
wiley   +1 more source

Seed–Habitat Thermal Interactions Contribute to the Mosaic Distribution Patterns of Invasive Chromolaena odorata and Ageratina adenophora in South Yunnan, China 种子与生境之间的热相互作用促成飞机草和紫茎泽兰在中国云南南部的镶嵌式分布

Integrative Conservation, Volume 4, Issue 1, Page 85-94, March 2025.
Chromolaena odorata and Ageratina adenophora are invasive species in Southern Yunnan, China; they have very differing, yet overlapping, climate niches. Both invaders produce a large number of small pappus‐bearing achenes every year. They grow in, and their seeds are dispersed to, both suitable and marginal habitats.
Bin Wen, Zhufang Zhao, Siqi Wang, Xuejing Yin, Liping He, Ligang Chen   +5 more
wiley   +1 more source

I paid into it with every paycheck I earned: How benefit type and beneficiary contributions shape attitudes about increasing or decreasing administrative burdens for social protections

Policy Studies Journal, Volume 53, Issue 1, Page 91-113, February 2025.
Abstract Administrative burdens are an important policy tool that has received growing scholarly attention. Burdens are consequential and serve as a contributor to incomplete program take‐up. However, our knowledge is limited on how program characteristics affect public attitudes toward burden‐increasing or decreasing policies.
Simon F. Haeder, Steven Sylvester
wiley   +1 more source

一类半线性抛物方程的外推非均匀网格有限差分方法

四川大学学报. 自然科学版, 2011
作者针对一维分布控制方程构造了一类外推非均匀网格差分格式,证明了差分格式解的存在唯一性和收敛性,并通过数值试验验证了理论分析的正确性.
周均, 胡兵
doaj  

Media representation of members of parliament in Egypt: A reality of gender imbalance 埃及议会议员的媒体代表性:性别不平衡的现实 “Representación mediática de los miembros del parlamento en egipto: Una realidad de desequilibrio de género”

Digest of Middle East Studies, Volume 33, Issue 4, Page 361-384, Fall 2024.
Abstract This study joins recent studies that explore the meanings of the political representation of women resulting from a gender quota, through examination of their media representation. Drawing on studies on gendered mediation and women's political representation and using a content analysis method, we examine the quantity and the quality of gender
Bosmat Yefet, Chen Friedberg
wiley   +1 more source

时间分数阶对流-扩散方程的有限差分法

四川大学学报. 自然科学版, 2013
时间分数阶对流-扩散方程可以用来模拟由传统的对流-扩散方程演变而来的反常扩散方程.本文针对一类时间分数阶对流-扩散方程提出了一个新的隐式差分格式,时间分数阶导数采用直接离散,空间导数采用中心差分格式离散,讨论了差分解的存在唯一性,并利用能量范数证明了该格式的无条件稳定性、收敛性,分析了收敛阶.数值试验验证了该格式的有效性.
李晓明, 余跃玉, 胡兵
doaj  

The implications of estimating rarity in Brazilian reptiles from GBIF data based on contributions from citizen science versus research institutions 基于公众科学和研究机构的贡献从GBIF数据中估算巴西爬行动物稀有性的意义 Implicações da estimativa de raridade de espécies de répteis brasileiros baseada nas contribuições da ciência cidadã versus instituições de pesquisa

Integrative Conservation, Volume 3, Issue 2, Page 112-126, June 2024.
Integrating data collected by citizen scientists with data from traditional surveys improves our knowledge of reptile species distribution and richness. Data contributed by citizen scientist can inform reptile species abundance and rarity patterns in Brazil.
Lucas Rodriguez Forti, Jandson Lucas Camelo da Silva, Eveline Almeida Ferreira, Judit K. Szabo   +3 more
wiley   +1 more source

广义正则长波方程的一个新的守恒差分格式

四川大学学报. 自然科学版, 2011
作者对广义正则长波方程的初边值问题进行了数值研究,提出了两层隐式拟紧致差分格式,该格式很好地模拟了问题的守恒性质,得到了差分解的存在唯一性,并分析了该格式的二阶收敛性与无条件稳定性.数值算例表明,该格式是可行的,且相对于一般的二阶格式,计算精度有明显提高.
徐友才, 胡劲松, 胡朝浪
doaj  

Understanding variation in impacts from private protected areas across regions and protection mechanisms to inform organizational practices

Conservation Biology, Volume 38, Issue 2, April 2024.
Abstract Private land protection is an important and growing tool to address biodiversity loss and climate change. Thus, better empirical evidence on the effectiveness of private land protection and organizational practices, such as targeting of lands for protection and choice of protection mechanism (i.e., fee simple land acquisition and conservation ...
Sarah Hagen, Christoph Nolte, Yuhe Chang, Seth Morgan, Giulio Boccaletti, Sheila M. W. Reddy   +5 more
wiley   +1 more source