Results 71 to 80 of about 28,720 (141)
Gaoya dianqi, 2012 针对单级同步感应线圈炮系统中影响弹丸速度和系统效率的主要因素——驱动线圈和电枢的结构参数、电容器的电容和放电电压以及电枢的触发放电位置,笔者对不同结构参数的单级同步感应线圈炮物理模型进行有限元分析与仿真,得出各项结构参数对弹丸速度的影响规律,提出了一组最佳的结构参数并根据优化的结构参数进行了发射实验。仿真和实验结果均表明该结构参数可以有效地提高弹丸速度和系统效率。
邹本贵 +3 more
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
wiley +1 more source
Factors influencing thrombelastography in pregnancy. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Cao Y, Liang T, Peng J, Zhao X.
europepmc +1 more source
Evaluating the empirical basis for threat attribution in the IUCN Red List
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries +5 more
wiley +1 more source
Using incentive payments to promote human–carnivore coexistence
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract For many large carnivores, minimizing the financial burden they impose on local people is critical to their conservation. Incentive‐based programs that provide people with financial benefits for taking pro‐conservation actions or achieving conservation goals are a promising tool for promoting human–carnivore coexistence. Although the number of
Adam Pekor +9 more
wiley +1 more source
Dianci bileiqi, 1991 金属氧化物避雷器的能量吸收能力取决于其它元件的温度。预测温度的一种有价值的方法是计算机模拟计算,但必须要有精确的参数。本文提出一种确定这种参数的方法。以前的方法用公式计算所要求的热参数。本文提出采用一次试验的方法提供参数。采用灵敏度分析法评估了参数值的系统误差 ...
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四川大学学报. 自然科学版, 2006 研究了半参数多元回归模型E(Y|X)=μ(XTβ),其中X是维数为p的列向量,μ,β是未知参数.由于此模型不容易满足误差方差齐性和误差分布正态性,作者对该半参数回归模型两边同时应用含参数λ的Cox-Cox变换,使得变换后的回归模型满足误差方差齐性和误差分布正态性条件,然后应用局部线性技术及极大似然方法,通过两步迭代,对未知参数β,λ及未知函数μ(.)进行了估计.
赵永红, 柳洪刚, 周永道
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
Veterinary Dermatology, Volume 37, Issue 3, Page 353-364, June 2026.ABSTRACT Background Canine atopic dermatitis (cAD) is a multifactorial, inherited skin disease, estimated to affect ≤ 15% of dogs. Studies of skin messenger mRNA in cAD currently use invasive methods, including blood sampling and biopsy collection, whilst advances in human atopic dermatitis study methodology have demonstrated reliable use of minimally ...
Xavier Langon +5 more
wiley +1 more source
四川大学学报. 自然科学版, 1962 对正整体数三元线型ax+bycx,（a,b,c）=1,x,y,z≥0,的最大不可表数M3及全体不可表正整数个数N3,在文[1]中曾作过详细的讨论,其后,在[2]中,又作过另一些讨论。在这些讨论中,都引进了一组无疑存在的参数,但都没有给出这些参数与给定系数的确切关系,亦即未曾给出通过给定系数a,b,c求出参数的公式。在这短短的注记里,我们力求指明各参数与给定系数的关系。精确些说 ...
尹文霖
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