Results 1 to 10 of about 3,363 (69)
Dizhen xuebao, 2022 地震波在穿越地下散射体群时会产生多级散射波，分析其地震响应特征，可推断散射体的分布情况和性质。本文从二维标量波动方程出发，结合地震散射理论和波恩近似理论，推导了多级散射波方程。在此基础上，采用高阶有限差分法对双点散射体模型和复杂散射体模型进行数值模拟，分析了多级散射波的传播规律和波场特征，并通过抽取多级散射记录和各级散射记录的单道记录与参考单道记录的对比，验证了本文推导散射波方程的准确性。
Bo Zhang +4 more
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South as a Sight ‘å—方’, from a branch to a necessity to World Literature
Journal of Research in Social Science and Humanities, 2023 In the discussion and debates on the world literature system, methodologies and methods is a topic that is valued. Moretti and Apter have prominent different opinions on the adoption of digital or abstract data outside texts and contexts. The way Moretti views the world literature system is highly based on historiography and studies of the Annual ...
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Gongye shui chuli, 2010 考察了CPAM分散聚合中,两种不同硫酸盐作为分散介质的可行性,并详细讨论了不同类型的分散剂对盐水介质中CPAM分散聚合的影响。通过研究发现,由于硫酸钠在水中的溶解度随温度波动较大,不适合作为CPAM分散聚合的分散介质。另外实验表明,由于非离子型分散剂在盐水介质中溶解性不佳,不适合作为CPAM分散聚合的分散剂。故选择硫酸铵与PDMDAAC分别作为盐水介质中CPAM分散聚合的分散介质与分散剂,并确定了硫酸铵最佳用量为聚合体系质量的27%~29%,PDMDAAC最佳用量为单体质量的10%~18 ...
林东海, 谭辉铁
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Zhejiang Daxue xuebao. Lixue ban, 2013 通过实验研究了改进的Scheibel萃取塔中分散相的停留时间分布，考察了操作条件、物性参数对分散相停留时间分布的影响.使用脉冲示踪法测量分散相的停留时间分布曲线，使用多釜串联模型处理数据，并通过因次分析法建立了一个计算模型参数为n的关联式.计算值与实验值的最大相对偏差为－ 14%，平均相对偏差为±5.9%.通过该式计算n，可以得到给定条件下分散相的停留时间分布，有助于进一步研究两相的传质行为.
SHIYi(石一) +3 more
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Intact coastal nursery rearing amid climate‐driven phenological shifts in threatened salmon
Conservation Biology, EarlyView.Abstract Literature linking phenology to climate has proliferated in recent decades and shows that climate change has reorganized seasonal opportunities worldwide. However, this literature often quantifies changes in point measures of timing (e.g., beginnings and peaks) without context about duration (e.g., rearing season length) or performance (e.g ...
Stuart H. Munsch +8 more
wiley +1 more source
There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy
Policy Studies Journal, EarlyView.ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino +2 more
wiley +1 more source
Coalition Breakdown and Subsystem Exit
Policy Studies Journal, EarlyView.ABSTRACT Why actors choose to work together (or not) to advance policy has been the central area of inquiry within the Advocacy Coalition Framework (ACF). Existing research has mainly emphasized the pathway towards coalition formation and evolution, underscoring the stable patterns of allies and opponents observable in policy processes over a decade or
Charlie F. Thompson
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Identical Platform, Divergent Publics: Sweden and Finland During the 2022 NATO Crisis
Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Digital platforms are often theorized as universal drivers of political polarization, yet empirical patterns remain inconsistent across countries. Leveraging the natural‐experiment logic of Sweden's and Finland's simultaneous 2022 NATO applications and the NATO–Turkey diplomatic crisis, this study examines how national political cultures ...
Selcen Ozturkcan
wiley +1 more source
Intangible drivers of tolerance shape human–elephant coexistence in Southwest China
People and Nature, Volume 8, Issue 8, Page 2763-2780, August 2026.Abstract Southwest China is home to a small but rapidly expanding population of Asian elephants (Elephas maximus), whose growth has intensified conflicts with people living in shared landscapes. These conflicts result in substantial economic losses and occasional human casualties. This coexistence paradox—where conservation success leads to significant
Xiaoyu Yu +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The limited crack resistance of coarse grain boundaries and coarse interfaces leads to an incompatibility between high‐temperature strength and ductility in TiAl alloys. Tailoring stress‐oriented textures and multiscale heterogeneous interfaces can effectively impede crack propagation, thereby overcoming this trade‐off.
Kexuan Li +7 more
wiley +1 more source