搜索结果: 1-9 共查到“理学 AIM”相关记录9条 . 查询时间(0.109 秒)
Method for decoding asteroid interiors could help aim asteroid-deflecting missions（图）
小行星内部 小行星偏转 自旋变化
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2023/6/9
NASA hit a bullseye in late September with DART, the Double Asteroid Redirection Test, which flew a spacecraft straight at the heart of a nearby asteroid. The one-way kamikaze mission smashed into the...
BITING BACK: SCIENTISTS AIM TO FORECAST WEST NILE OUTBREAKS
BITING BACK SCIENTISTS AIM WEST NILE OUTBREAKS
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2015/5/25
New research has identified correlations between weather conditions and the occurrence of West Nile virus disease in the United States, raising the possibility of being able to better predict outbreak...
AIM结合渐近波形估计技术快速分析目标宽带电磁散射特性
电磁散射 自适应积分 快速傅里叶变换 矩量法 渐近波形估计 雷达截面
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2011/11/23
该文将自适应积分方法(AIM)与渐近波形估计(AWE)技术结合快速计算了目标宽带雷达截面(RCS)。通过渐近波形技术实现快速扫频，利用自适应积分(AIM)稀疏存储稠密阻抗矩阵及阻抗矩阵的频率导数，并加速求解泰勒展开系数中的矩阵与矢量相乘计算，提高了计算速度并降低了内存需求。通过结合自动微分技术，计算了该方法所需的格林函数关于频率的高阶导数。数值结果表明，与传统AIM逐点计算相比，该方法在不失精度条...
Solution of the Bosonic and Algebraic Hamiltonians by using AIM
Asymptotic Iteration Method Analytical solution Boson Hamiltonian
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2010/11/26
We apply the notion of asymptotic iteration method (AIM) to determine eigenvalues of the
bosonic Hamiltonians that include a wide class of quantum optical models. We consider solutions
of the Hamilt...
Solution of the Bosonic and Algebraic Hamiltonians by using AIM
Asymptotic Iteration Method Analytical solution Boson Hamiltonian
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2010/10/21
We apply the notion of asymptotic iteration method (AIM) to determine eigenvalues of the
bosonic Hamiltonians that include a wide class of quantum optical models. We consider solutions
of the Hamilt...
Peering Under the Ice of a Collapsing Polar Coast--Low-Level Aerial Surveys Aim to Understand Rapid Antarctic Melting（图）
the Ice of a Collapsing Polar Coast Low-Level Aerial Surveys Rapid Antarctic Melting
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2009/12/10
Starting this month, a giant NASA DC-8 aircraft loaded with geophysical instruments and scientists will buzz at low level over the coasts of West Antarctica, where ice sheets are collapsing at a pace ...
Study takes aim at opportunistic fungal pathogens--Research provides genome sequences and critical analyses of key Candida species
fungal pathogens genome sequences critical analyses Candida species
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2009/6/22
In what represents one of the largest comparative genomics studies to date, scientists have cracked the genetic code of several fungal species that cause bloodstream infections in patients with suppre...
卤键的AIM研究
分子中的原子理论（AIM） 卤键 从头算 MP2(full)/aug-cc-pvdz
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2007/12/22
摘要 本文利用分子中的原子理论对一系列含卤分子与氨之间形成的卤键进行了分析，内容包括键关键点的确定、关键点的电子密度和拉普拉斯量以及复合物形成前后的若干原子性质，如电荷、能量、极化矩、卤键供体原子体积等的变化。结果显示：（1）所有卤键复合物中均存在一键关键点，其作用属于闭壳型相互作用；（2）卤键复合物键关键点的电子密度及其拉普拉斯量与卤键的强度间存在很好的线性关系；（3）键关键点电子密度的对数与卤...