Results 1 to 10 of about 8,161,835 (383)

The existence of time [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2010
Of those gauge theories of gravity known to be equivalent to general relativity, only the biconformal gauging introduces new structures - the quotient of the conformal group of any pseudo-Euclidean space by its Weyl subgroup always has natural symplectic
Abraham R. H.   +7 more
core   +5 more sources

The Existence of a Subelectron? [PDF]

open access: greenPhysical Review, 1916
In was the year 1833 that Faraday's discoveries in electrolysis first suggested the existence of an elementary electrical charge, and first made possible a rough estimate as to its value.
R. A. Millikan
openalex   +7 more sources

On periodic solutions of Rayleigh equation [PDF]

open access: yesИзвестия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, 2021
New sufficient conditions for the existence and uniqueness of a periodic solution of a system of differential equations equivalent to the Rayleigh equation are obtained.
Tlyachev, V. B.   +2 more
doaj   +1 more source

The gap between policy and practice for human rights in conservation: a case study in Papua Province, Indonesia

open access: yesOryx, 2023
The adverse effects that conservation can have on Indigenous Peoples and local communities have been known for decades. In recognition, governments and conservation organizations have adopted joint statements of intent and rolled out various individual ...
Paul A. Barnes   +5 more
doaj   +1 more source

Cognitive and Memory Functions in Plant Immunity

open access: yesVaccines, 2020
From the time of Thucydides in the 5th century BC, it has been known that specific recognition of pathogens and memory formation are critical components of immune functions.
Hidetaka Yakura
doaj   +1 more source

Immunity in Light of Spinoza and Canguilhem

open access: yesPhilosophies, 2020
All living organisms are under stress imposed by their surrounding environments. They must adapt to their stressors to live and survive. At the forefront of this adaptation is a defense system called immunity.
Hidetaka Yakura
doaj   +1 more source

MU-MIMO Communications With MIMO Radar: From Co-Existence to Joint Transmission [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2017
Beamforming techniques are proposed for a joint multi-input-multi-output (MIMO) radar-communication (RadCom) system, where a single device acts as radar and a communication base station (BS) by simultaneously communicating with downlink users and ...
Fan Liu   +4 more
semanticscholar   +1 more source

Periodic wave solutions of a non-Newtonian filtration equation with an indefinite singularity

open access: yesAIMS Mathematics, 2021
This paper is concerned with the existence of periodic wave solutions for a type of non-Newtonian filtration equations with an indefinite singularity.
Famei Zheng
doaj   +1 more source

Fractional nonlocal integrodifferential equations of mixed type with time-varying generating operators and optimal control [PDF]

open access: yesOpuscula Mathematica, 2010
In this paper, a class of fractional integrodifferential equations of mixed type with time-varying generating operators and nonlocal conditions is considered.
JinRong Wang, W. Wei, YanLong Yang
doaj   +1 more source

Home - About - Disclaimer - Privacy