Results 31 to 40 of about 7,773 (169)
Conservation Biology, Volume 39, Issue 3, June 2025.Abstract Successful long‐term conservation relies on strategic planning for pragmatic actions to mitigate threats. Prioritizing actions and areas to support conservation goals in the most cost‐effective scenario becomes crucial in resource‐limited environments. However, planning and management can be challenging in data‐limited contexts.
Anna Karolina Martins Borges +3 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2009 城市建筑风格作为表述城市风貌的主因子,其论定存在模糊性和主观性.本文在建立多因子加权数学模型的基础上,通过建筑风格的影响因子择取、因子权重赋值、加权综合叠加等步骤确定城市建筑风格.以台州玉环城市建筑风格研究进行实例佐证,表明该方法能够适应城市设计与建设的需求,并具有较强的可操作性.
ZHAONing(赵宁) +2 more
doaj +1 more source
World Water Policy, Volume 11, Issue 2, Page 499-525, May 2025.Abstract Water distribution networks are costly long‐term investments, prompting researchers to seek cost reduction and efficient design solutions using optimization techniques. In this context, the Penalty‐Free Multi‐Objective Evolutionary Algorithm (PFMOEA) is employed alongside pressure‐dependent analysis (PDA) to optimize water distribution systems
Emily Kambalame, John Ndiritu
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2011 实时、准确地掌握区域水土流失时空变异规律是制定有效水土保持措施的关键.但目前水土流失时空规律分析鲜有兼顾定量数值特征与空间可视化特征.本研究利用探索性空间分析方法和遥感信息，在景观尺度上，对1994~2003年间浙江安吉县水土流失的时空动态格局进行分析.结果表明，10年间安吉县水土流失强度增加、影响范围扩大、水土流失高风险区面积增加.在500 m×500 m和1 000 m×1 000 m 2种格网尺度上，水土流失空间格局均表现出明显的空间集聚性，但以500 m×500 m尺度上的表现更为显著 ...
JIANGZhen-lan(江振蓝) +4 more
doaj +1 more source
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
Ternary subdivision schemes that blend interpolating and approximating(插值与逼近混合的三重细分法)
Zhejiang Daxue xuebao. Lixue ban, 2019 提出了一种新的四点三重插值曲线细分法和一种含参数的三次B-样条曲线细分法，利用提出的这两种曲线细分方法得到了一种插值与逼近混合的三重曲线细分法。这种混合细分法将插值细分和逼近细分统一为同一格式。给出了这种混合细分法的几何解释，分析了其连续性，并将其推广到曲面情形，提出了四边形网格上的1-9 插值曲面细分法和张量积三次B-样条曲面细分法。利用这两种曲面细分法，得到了插值与逼近相混合的三重曲面细分法，并分析了其连续性。数值实例表明，方法是合理有效的。
TANJieqing(檀结庆) +4 more
doaj +1 more source
The platform policy matrix: Promotion and regulation
Policy &Internet, Volume 17, Issue 1, March 2025.Abstract This study provides a comprehensive analysis of policy measures adopted by countries in response to the rapid growth of digital platforms, which significantly impact various sectors and national economies. It examines the delicate balance between regulation and innovation, offering nuanced policy recommendations.
Junic Kim, Shanghe Ahn
wiley +1 more source
Deep fakes and the Artificial Intelligence Act—An important signal or a missed opportunity?
Policy &Internet, Volume 16, Issue 4, Page 783-800, December 2024.Abstract The Artificial Intelligence Act (AI Act) adopted by the European Union might serve as a global regulatory reference point. Heated negotiations over the AI Act have shown that reconciling the interests of numerous stakeholders is not an easy task.
Mateusz Łabuz
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 以含椭圆形表面裂纹的三维平板为例,比较了J积分法、相互作用积分法、1/4结点位移法和扩展有限元法(XFEM)等方法计算应力强度因子(SIF)的特点。首先介绍了这4种方法的原理,将它们计算的平板表面裂纹SIF与国际认可的Newman-Raju公式计算值进行对比,均与公式计算值吻合较好,但XFEM计算的SIF沿裂纹前缘呈现出较小的振荡。然后,分析了这些方法计算的SIF对网格尺寸的敏感性,发现J积分法和相互作用积分法计算的SIF非常稳健,对网格尺寸不敏感,而其余方法对网格尺寸均有一定程度的敏感性。另外 ...
肖顺, 童乐为
doaj
Zhejiang Daxue xuebao. Lixue ban, 2016 针对连续空间中无法直接采用图论方法进行路径分析的问题，提出了基于四叉树思想构建的变分辨栅格模型.该模型不仅兼顾了地形表达精度与数据冗余度，而且避免了地物“边缘效应”的影响.在该模型基础上，设计了一种启发式有向搜索算法，该算法在搜索节点时，首先对相邻节点进行方向性选择，减少搜索空间，提高了算法的效率.实验结果表明，提出的模型及算法不仅能够求得连续空间中的最优路径，而且具有较高的计算效率.
HUAJianfeng(华剑锋) +4 more
doaj +1 more source