Results 31 to 40 of about 19,637 (212)

球形地球模型的地震位错理论及其应用

open access: yesDizhen xuebao, 2022
地震位错理论是研究地震断层滑动与地球物理场变化之间关系的理论,是震源机制、地球内部构造、地震预测等基本地球物理问题与大地测量、地球物理观测数据之间的联系纽带。被广泛使用的半无限空间介质模型的位错理论,由于其几何模型的限制,在地震变形和地球动力学等应用研究中会导致一定程度的误差。此外,现代大地测量技术可以在全球和区域尺度上精确地观测地震变形,亟需一个适用于全球地震变形研究的地震位错理论。为此,本团队基于球形地球模型,经过多年系统性研究,建立了地震位错理论新体系。所构建的球形地球模型的地震位错理论 ...
Wenke Sun   +9 more
doaj   +1 more source

Defining and identifying relevant stakeholders to advance effective conservation

open access: yesConservation Biology, EarlyView.
The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher   +5 more
wiley   +1 more source

Application of "Problem-solving Teaching Mode" in clinical nursing teaching round in internal medicine department

open access: yesHuli yanjiu, 2005
[目的 ]探讨问题解决型教学模式在内科护理临床教学查房中的应用。 [方法 ]将护生随机分组 ,每组指导老师均采用问题解决型模式和传统教学模式进行护理临床教学查房各 3次 ,然后调查护生对两种查房方法的评价。 [结果 ]问题解决型教学查房模式在培养护生的能力、团结协作精神、临床思维判断能力等方面明显优于传统教学查房模式 ,差异有统计学意义 (P
何克芝   +4 more
doaj  

Drivers of bat researchers’ intent to adopt field hygiene practices

open access: yesConservation Biology, EarlyView.
Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman   +6 more
wiley   +1 more source

Phase Diagram of Lead-free Brass Systems and Their Applications in Morphological Design of Bi-containing Brass [PDF]

open access: yes, 2015
由于铅黄铜具备优异的耐磨性、耐化学腐蚀和切削性,因而常被用于制造阀门、水管以及散热器等。近年来随着人们对自身健康的关注以及环保意识的不断加强,有铅黄铜的无铅化已经是黄铜业的一个行业趋势。新型无铅黄铜的发展俨然已成为黄铜行业一个迫切的目标。相图是材料设计的基本指南,可以对合金成分、制备工艺提供指导,并在一定程度上对合金的组织进行预测。本研究主要利用合金法实验测定了Cu-Zn-Sn,Sn-Sb-Zn,Sn-Sb-Cu三元系在不同温度全成分范围内的等温截面相图。本研究取得的主要研究成果如下: (1)通过合金法,
许叶潞
core  

Perceptions and Acceptance of Generative Artificial Intelligence Influencing Chinese EFL Learners’ Engagement in Informal Digital Learning of English: Mediating Roles of Self‐Efficacy and Motivation

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Generative artificial intelligence (GenAI) has emerged as a powerful tool in the Informal Digital Learning of English (IDLE) environment, offering personalized, interactive, and innovative language learning experiences that may enhance learning engagement.
Jin Liu, Meilu Liu, Yuan Yao, Dechao Li
wiley   +1 more source

Development of thermodynamic database of Co-X (X: V, Ta) base alloys and its applications in alloy design [PDF]

open access: yes, 2015
Co基合金具有良好的磁学性能、耐磨性、耐热性、耐腐蚀性以及生物相容性,因此在国防和民用工业中是一种重要的金属材料。然而长期以来对新型Co基材料的开发通常是凭借经验或是采用试错法,缺乏相应的理论指导,研发周期长,耗资大,效率低。近年来,随着“材料基因组”计划的提出,研究者希望能够重组Co基材料的“材料基因”,从而可以根据工业需求来有目的地研发新型Co基材料。CALPHAD(CALculationofPHAseDiagram)是一种行之有效地获得“材料基因”的方法 ...
赵璨璨
core  

The Five‐Thread Model & Academic Policy Entrepreneurs: From the White Australia Policy to Multicultural Australia

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Why did Australia go from the White Australia Policy, which excluded non‐whites, to institutionalizing multiculturalism policy in the 1970s? This question defies traditional political ideologies of the major political parties, which had long supported the White Australia Policy. This article is a rare empirical demonstration of the Five‐Thread
Julius C. S. Mok
wiley   +1 more source

Development of thermodynamic database of Mg base electrode materials and its applications in alloy Design [PDF]

open access: yes, 2016
镁合金具有密度小,理论比容量大,标准电极电位负、电压范围广等优点,因此作为阳极材料被广泛应用于化学电源中。目前,镁基阳极材料还存在极化严重、阳极利用率低、激活时间长等不足。传统镁基阳极材料的开发以“尝试法”为主,研发周期长,浪费了大量人力和物力,严重阻碍了镁基阳极材料的发展。2011年,随着“材料基因组”计划的的提出,研究者希望通过材料的设计来开发新型镁基材料。相图作为“材料基因组”中的重要组成部分,受到越来越多研究者的关注。目前为止,已报道的镁基阳极材料相平衡信息相对匮乏,有必要对其相平衡信息进行完善,
王东
core  

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