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Physics of semiconductor power devices
Reports on Progress in Physics, 1982Semiconductor power devices are designed to rapidly switch or amplify high currents, to support high voltages, and to control electric power. Because of these requirements, their topographies and structures are different from those of small-signal devices. Specific designs are the result of the understanding of the physics of p-n junction HV breakdown,
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本文提出了一个描述社会权力动态的一般数学框架。与基于博弈论的传统模型不同,本研究采用了基于矢量微积分和非平衡热力学的方法。通过定义实体、资源和系统的几何属性,本文建立了五个基本公理,并推导出一组耦合微分方程——称为“三位一体方程”——描述系统的状态、成本和未来。该模型量化了系统几何相干性与资源耗散速率之间的函数关系,并展示了“功率方差”与“技术演变”之间的动态排斥定律。这项工作揭示了权力结构不可避免地趋向自我腐蚀的物理机制,为定量历史分析提供了一种新颖的理论工具。 本文提出了一种描述社会权力动力学的通用数学框架。不同于基于博弈论的传统模型,本研究采用了基于向量微积分和非平衡态热力学的方法。通过定义实体、资源与系统的几何属性,本文建立了五条基础公理,并推导出一组描述系统状态 ...
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Nuclear physics and nuclear power
Atomic Energy, 1999For the example of the Radium Institute, which recently celebrated its 75th anniversary and has been a part of the Academy of Sciences for around 40 years, it is shown how nuclear physics, as the theoretical basis of the nuclear power industry, facilitates its development and the transition to internally safe and environmentally sound nuclear ...
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For a long time scientists have treated the power of an action as being just dependent on thealignment of force and velocity, however this turns out not to be the whole story when the toolsof calculus are applied to studying the problem. The full picture is important because, e.g., itcompletely explains the coupling between mass and mechanical power ...
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Power reactor health physics in the 1960s
Radiation Protection Dosimetry, 2004This note is a personal re-collection of some of the problems and experiences of the Health Physics Department staff at Dungeness Power Station during the period 1963-1971. This was a period of construction, commissioning, operating and learning.
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The interplay between microbial communities and soil properties
Nature Reviews Microbiology, 2023laurent Philippot +2 more
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Emerging exciton physics in transition metal dichalcogenide heterobilayers
Nature Reviews Materials, 2022Emma C Regan, Yongxin Zeng, Long Zhang
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