Results 11 to 20 of about 586,100 (219)
2021年云南漾濞MS6.4地震动态应力对后续余震活动的触发作用
Dizhen xuebao, 2023 选取IRIS远震台站波形数据，反演了云南漾濞MS6.4地震震源破裂过程，计算了断层破裂在近场产生的动态库仑破裂应力变化，并讨论了主震对近场余震活动的动态应力触发作用。结果显示：动态库仑应力演化过程与震源破裂特征反演结果一致，其大小分布与地震序列分布的疏密程度也具有较好的相关性。主震产生的静态和动态库仑破裂应力均促进余震的发生，但相比静态应力，余震位于库仑破裂应力正值区域的比例提高了21%，余震与动态库仑应力变化的正负区域有更好的一致性，动态应力能更好地解释震后余震分布的空间特征。垂直于地震序列主干10 ...
Rong Liu +4 more
doaj +1 more source
Equine Veterinary Journal, EarlyView.Abstract Background Persistent breeding‐induced endometritis (PBIE) is a common reason for mares failing to establish pregnancy. Objective To examine the hypothesis that advancing mare age and embryo donor status predispose to PBIE and compromise fertility.
Tom Stout +3 more
wiley +1 more source
He jishu神经网络可以基于大量数据学习输入输出变量之间的关系，具有强大的拟合能力，在包括核工程计算领域常用作程序的代理模型。中子输运计算作为中子学模拟的核心环节之一，其耗时较长的问题可以利用神经网络模型来解决。然而，神经网络模型具有一系列超参数需要设置，而手动调节这些超参数工作量大，重复繁琐，只能依靠经验进行，而且求解不同问题时这些超参数不可复用。为了解决以上问题，本文提出了一种采用贝叶斯优化（Bayesian Optimization）的算法来调节神经网络超参数，结合了自适应学习率衰减、损失函数优化方法 ...
张 凡 +5 more
doaj +1 more source
International Insolvency Review, EarlyView.Abstract Although a local experiment, the promulgation of the Regulations of Shenzhen Special Economic Zone on Personal Bankruptcy (SPBR) in 2020 was hailed as a significant milestone in China's insolvency lawmaking which has thus far addressed only corporate insolvencies.
Jenny Fu, Jin Chun
wiley +1 more source
Beyond Universalism: A Contextual Approach to Comparative Public Administration
Public Administration and Development, EarlyView.ABSTRACT In this essay, I advocate for a contextual approach to comparative public administration, arguing that effective governance reform requires moving away from universal models to embrace local political, socioeconomic, and institutional realities.
XiaoHu Wang
wiley +1 more source
He jishu针对由形状记忆合金制作的新型搅混翼的强化换热效果及其影响下的燃料棒微动磨蚀问题，利用双向流固热耦合的方法模拟了新型搅混翼下的流场分布、压降损失及燃料棒受力情况，并建立了燃料棒受力的非线性振动模型，计算了燃料棒相对于定位格架的微动磨蚀功率。结果表明：形状记忆合金搅混翼可不产生额外的压力损失而强化燃料棒与冷却剂间的传热；强化传热效果随着搅混翼的最大弯折角度的增大而增大；同时，燃料棒与定位格架间的微动磨蚀功率随着搅混翼的弯折角度增大而增大。
袁 硕, 柴 翔, 刘 晓晶, 何 辉
doaj +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Looking at Us Through Their Eyes. The Analytical Process from Ethnographic Perspectives1
Journal of Analytical Psychology, EarlyView.Abstract This article looks at the analytical situation through the Others’ eyes—through examples from contemporary ethnographies of foreign cultures. It discusses the following issues: a) The analogy between the ontological worlds of the dead, ghosts, animals and dreams in “primitive populations” and the analytical psychological descriptions of the ...
Stefano Carta
wiley +1 more source
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
, 2007 基于Biot多孔介质波动理论和Cauchy初应力分析结果给出横观各向同性介质初应力存在的本构方程。利用位移标量势函数得到介质中膨胀波传播的四个波速。通过数值计算研究初应力和孔隙压力存在对膨胀波传播特性的影响 ...
李世海, 马维
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