Results 11 to 20 of about 263,310 (323)

Information-based physics: an observer-centric foundation [PDF]

open access: green, 2014
It is generally believed that physical laws, reflecting an inherent order in the universe, are ordained by nature. However, in modern physics the observer plays a central role raising questions about how an observer-centric physics can result in laws ...
Kevin H. Knuth
openalex   +4 more sources

Dynamics and Control of a Magnetic Transducer Array Using Multi-Physics Models and Artificial Neural Networks

open access: yesSensors, 2021
A linear mechanical oscillator is non-linearly coupled with an electromagnet and its driving circuit through a magnetic field. The resulting non-linear dynamics are investigated using magnetic circuit approximations without major loss of accuracy and in ...
Georgios Tsakyridis, Nikolaos I. Xiros
doaj   +1 more source

Synthesis of wind turbine trailing edge noise in free field [PDF]

open access: yesJASA Express Letters, 2022
The proposed sound synthesis tool converts a physics-based frequency-domain model of wind turbine trailing edge noise to a time-domain signal while accounting for the appropriate time shift due to the propagation between the moving blades and the fixed ...
David Mascarenhas   +2 more
doaj   +1 more source

Physically Observable Cryptography [PDF]

open access: yes, 2004
Complexity-theoretic cryptography considers only abstract notions of computation, and hence cannot protect against attacks that exploit the information leakage (via electromagnetic fields, power consumption, etc.) inherent in the physical execution of any cryptographic algorithm.
Silvio Micali, Leonid Reyzin
openaire   +1 more source

Importance of an Astrophysical Perspective for Textbook Relativity [PDF]

open access: yes, 1997
The importance of a teaching a clear definition of the ``observer'' in special relativity is highlighted using a simple astrophysical example from the exciting current research area of ``Gamma-Ray Burst'' astrophysics.
Eric G Blackman   +6 more
core   +2 more sources

PENERAPAN PENDEKATAN STUDENT CENTERED LEARNING (SCL) UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KREATIF DAN KOMUNIKATIF MAHASISWA PENDIDIKAN FISIKA SEMESTER III UNIVERSITAS BENGKULU

open access: yesJurnal Kumparan Fisika, 2020
ABSTRAK   Penelitian ini bertujuan untuk medeskripsikan peningkatan keterampilan berpikir kreatif dan keterampilan komunikasi setelah diterapkan pendekatan student centered learning pada matakuliah Strategi Pembelajan Fisika. Penelitian ini menggunakan
Rosane Medriati, Eko Risdianto
doaj   +3 more sources

Active Disturbance Rejection Control for the Robust Flight of a Passively Tilted Hexarotor

open access: yesDrones, 2022
This paper presents a robust control strategy for controlling the flight of an unmanned aerial vehicle (UAV) with a passively (fixed) tilted hexarotor. The proposed controller is based on a robust extended-state observer to estimate and reject internal ...
Santos Miguel Orozco Soto   +3 more
doaj   +1 more source

A Potential Foundation for Emergent Space-Time [PDF]

open access: yes, 2014
We present a novel derivation of both the Minkowski metric and Lorentz transformations from the consistent quantification of a causally ordered set of events with respect to an embedded observer.
Aczél J.   +9 more
core   +3 more sources

The Concept of Observer in Science Teaching in Middle School: Pre-Instructional Knowledge as a Lever for Learning rather than an Obstacle

open access: yesEducation Sciences, 2023
This study deals with the concept of the observer in science education, which is currently significantly diminished at school. In the first part, we review the theoretical perspective of the concept, regarding its historical role in physics knowledge ...
Ben Stein, Hana Stein, Igal Galili
doaj   +1 more source

Information-Theoretic Models for Physical Observables

open access: yesEntropy, 2023
This work addresses J.A. Wheeler’s critical idea that all things physical are information-theoretic in origin. In this paper, we introduce a novel mathematical framework based on information geometry, using the Fisher information metric as a particular Riemannian metric, defined in the parameter space of a smooth statistical manifold of normal ...
D. Bernal-Casas, J. M. Oller
openaire   +4 more sources

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