Results 11 to 20 of about 7,552 (118)

Genomics‐informed management of ex situ populations

open access: yesConservation Biology, EarlyView.
Abstract The European Association of Zoos and Aquariums (EAZA) manages insurance populations for hundreds of species through its EAZA ex situ programs (EEPs). EEPs help safeguard against extinction in the wild and provide source populations for genetic rescue programs.
Cock van Oosterhout   +8 more
wiley   +1 more source

L2 Chinese Grammatical Acquisition and Processing: A Substantive and Methodological Review

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This study presents a systematic review of 92 empirical studies on Chinese as a second language (CSL) in grammatical processing and development, synthesizing their substantive foci and methodological characteristics. The results reveal consistent scholarly attention to cross‐linguistic topics, with less focus on features that are distinctively
Shaohua Fang, Yi Xu, Jiani He, Jia Wang
wiley   +1 more source

地震波动谱元法数值模拟研究进展

open access: yesDizhen xuebao
基于谱元法的地震波动数值模拟已被广泛用于地震震源破裂、大规模地震波传播、区域复杂场地及工程结构(群)地震反应、地震层析成像等重要问题的研究及应用当中,是目前地震工程学、地震学和地球物理学等地震科技领域共同关注的前沿热点技术。早期发展的切比雪夫谱元法(CSEM)和勒让德谱元法(LSEM)更接近谱方法的域分解思路,其形式相对复杂且计算效率较低。目前广泛使用的是一种形式简洁的LSEM,其实施步骤和主要公式已经与有限元法完全一致,仅通过内置的高斯-洛巴托-勒让德(GLL)高精度数值积分保留着与谱方法之间的联系 ...
Haojie Xing, Hongjing Li, Ruirui Nan
doaj   +1 more source

Does the Adoption of Improved Cassava Varieties Boost Productivity in Ghana? The Role of Technology, Management, and Structural Gaps

open access: yesWorld Food Policy, Volume 12, Issue 2, November 2026.
ABSTRACT Agricultural development initiatives in sub‐Saharan Africa have emphasized improved crop varieties as a pathway to food security, resilience, and rural poverty reduction. However, empirical evidence often focuses narrowly on plot‐level outcomes and overlooks whole‐farm effects and the substantial heterogeneity in farmers' management practices,
Kodjo Kondo   +4 more
wiley   +1 more source

Evaluating the use of taxonomy in the IUCN Red List

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Taxonomy defines the units that conservationists strive to preserve for future generations. However, the discovery of new species and the taxonomic revision of existing species affect conservation efforts. Despite the importance of taxonomy for a species’ conservation, there is currently no overview of how those leading species extinction risk
Stephen T. Garnett   +8 more
wiley   +1 more source

Liquid/Solid EGaIn@Ag Heterostructure Catalyst Enabling CO2 Electroreduction to CO in a Three‐Membrane Electrolyzer With Co‐Production of K2CO3 and Cl2

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Electrochemical carbon dioxide reduction reaction (CO2RR) powered by renewable electricity offers a sustainable route for producing value‐added carbonaceous chemicals. Herein, a three‐membrane electrolyzer was employed to directly co‐generate carbon monoxide (CO), chlorine (Cl2), and potassium carbonate (K2CO3) from the electrolysis of CO2 and
Shuai Wu   +10 more
wiley   +1 more source

船体结构有限元建模与分析

open access: yesHaiyang gongcheng zhuangbei yu jishu, 2015
上海交通大学出版社出版定价:35.00内容简介:本书介绍了船舶结构强度计算的有限元建模方法及分析过程。全书共分6章,主要内容包括有限元方法的基本原理、船舶结构的有限元建模方法、典型船体结构的有限元分析——"三舱段"有限元建模与分析、锚机基座结构的受力分析、船体横向强度的有限元分析、船体结构振动的有限元分析 ...
熊志鑫
doaj  

A discontinuous Galerkin finite element method for a class of generalized nerve conduction equations(广义神经传导方程的一种间断Galerkin有限元解法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
通过引进间断Galerkin有限元方法的思路,给出了 一维和二维广义神经传导方程的间断Galerkin有限元解法,并对这种数值解法进行了相应的误差分析,得到其精度为O(Δt+hk+1);通过对数值例子及其结果的分析,验证了数值计算方法的有效性.
ZHUHuan(朱欢), SUNFang-yu(孙方裕)
doaj   +1 more source

The numerical investigation of non-Newtonian fluid filling process via finite element and discontinuous Galerkin method(三维非牛顿流体充填过程的有限元-间断有限元数值模拟研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2023
针对三维非牛顿流体充填问题,建立了有限元-间断有限元耦合算法。对于两相Navier-Stokes方程,基于压力增量修正格式分三步求解,分别采用二次和一次拉格朗日插值多项式求解速度和压力,以确保计算过程稳定。采用守恒型水平集(level set)方法追踪运动界面,并依据间断有限元方法求解水平集和重新初始化方程。以三维圆球剪切流动及非牛顿流体三维平板型腔充填过程为例,并与已有文献的数值和实验结果进行比较,以验证数值算法的稳定性、准确性以及流体的质量守恒性。
高普阳(GAO Puyang)
doaj   +1 more source

Engineering Stress‐Decoupled SnP2O7@Carbon Core Shell via Spatial Confinement for Cycling‐Stable Sodium Storage

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Tin‐based composite oxides typically undergo severe volume variations and exhibit poor intrinsic conductivities despite their high theoretical capacity as promising anode candidates for sodium‐ion batteries. This results in rapid structural degradation and capacity fading upon cycling.
Yongmei Sun   +5 more
wiley   +1 more source

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