Results 81 to 90 of about 1,998,559 (288)

Black Hole Entropy is Noether Charge

, 1993
We consider a general, classical theory of gravity in $n$ dimensions, arising from a diffeomorphism invariant Lagrangian. In any such theory, to each vector field, $\xi^a$, on spacetime one can associate a local symmetry and, hence, a Noether current $(n-
B.S. Kay, D. Sudarsky, G.W. Gibbons, I. Racz, I.M. Anderson, J. Lee, J.D. Brown, J.D. Brown, J.M. Bardeen, R.M. Wald, R.M. Wald, R.M. Wald, Robert M. Wald, S.W. Hawking, S.W. Hawking, S.W. Hawking, T. Regge, T.A. Jacobson, V.P. Frolov, W. Simon   +19 more
core   +2 more sources

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Discussion and understanding of law in 20th century

Bratislava Law Review, 2017
Dominant discussion is understanding law and morality which represents neverending story. The article analyzes positive law in 20th century represented by H.L. A Hart and natural law development by L.L. Fuller and R. Alexy.
Jarmila Chovancová
doaj   +1 more source

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

Advanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu, Jieming Chen, Xue Peng, Huilin Zhang, Ling Kang, Ming Ma, Zhaoling Li, Yusuke Yamauchi, Bin Ding   +8 more
wiley   +1 more source

General relativistic theory of gravity and electricity

Revista de Investigación de Física, 2022
As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry, we expect the latter also to appear throug the geometry.
Mississippi Valenzuela
doaj   +2 more sources

St. Thomas Aquinas and John Locke on Natural Law [PDF]

Studia Gilsoniana, 2017
John Locke’s natural law theory has frequently been conceived as a continuation of the Thomistic tradition and as sound basis for human rights as universally binding. This paper concludes that this is not the case.
Ginna M. Pennance-Acevedo
doaj  

Panarchy and the Law

Ecology and Society, 2012
Panarchy theory focuses on improving theories of change in natural and social systems to improve the design of policy responses. Its central thesis is that successfully working with the dynamic forces of complex adaptive natural and social systems ...
J. B. Ruhl
doaj   +1 more source

Natural selection as coarsening

, 2017
Analogies between evolutionary dynamics and statistical mechanics, such as Fisher's second-law-like "fundamental theorem of natural selection" and Wright's "fitness landscapes", have had a deep and fruitful influence on the development of evolutionary ...
Smerlak, Matteo
core   +1 more source

2D Nanomaterials Toward Function‐Ready Superlubricity in Advanced Microsystems

Advanced Materials, EarlyView.
A unified framework links structural and transformation superlubricity with microsystem functions and deployment requirements. Mechanisms, device architectures, integration strategies, AI‐guided discovery, and benchmarking protocols are connected to define function‐ready superlubricity in advanced microsystems.
Yushan Geng, Jun Yang, Yong Yang
wiley   +1 more source