Results 11 to 20 of about 3,373,182 (327)

Threat of arsenic contamination, salinity and water pollution in agricultural practices of Sundarban Delta, India, and mitigation strategies

open access: yesSN Applied Sciences, 2021
The paper through a critical appraisal of the agricultural practices in the Indian Sundarban deltaic region explores the tripartite problems of arsenic biomagnification, salinity of arable lands and ingress of agrochemical pollutants into the freshwater ...
Anirban Nath   +4 more
doaj   +1 more source

The observer-dependent shadow of the Kerr black hole [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
Motivated by inclination of the Earth's orbit that is not located at galactic plane for observing the shadow of Sgr A*, we consider the black hole shadow for arbitrary inclinations and different velocities of observers.
Zhe Chang, Qing-Hua Zhu
semanticscholar   +1 more source

Mixing indistinguishable systems leads to a quantum Gibbs paradox

open access: yesNature Communications, 2021
The Gibbs paradox stems from the entropy change upon mixing two gases. Here, by considering bosonic and fermionic statistics, the authors show that an observer unable to distinguish the particles’ spins assigns a greater entropy increase to the mixing ...
Benjamin Yadin   +2 more
doaj   +1 more source

Neural Network-Based Intuitive Physics for Non-Inertial Reference Frames

open access: yesIEEE Access, 2021
Classical mechanics offers us reliable means to predict various physical quantities, but it is difficult to derive the precise dynamic equations underlying most phenomena and obtain physical quantities in real-world situations.
Jongwoo Seo, Sang Wan Lee
doaj   +1 more source

Scale Factor Estimation for Quadrotor Monocular-Vision Positioning Algorithms

open access: yesSensors, 2022
Unmanned aerial vehicle (UAV) autonomous navigation requires access to translational and rotational positions and velocities. Since there is no single sensor to measure all UAV states, it is necessary to fuse information from multiple sensors. This paper
Alejandro Gómez-Casasola   +1 more
doaj   +1 more source

Sensitivity of the Action Observation Network to Physical and Observational Learning [PDF]

open access: yesCerebral Cortex, 2008
Human motor skills can be acquired by observation without the benefit of immediate physical practice. The current study tested if physical rehearsal and observational learning share common neural substrates within an action observation network (AON) including premotor and inferior parietal regions, that is, areas activated both for execution and ...
Cross, E.   +4 more
openaire   +3 more sources

The YU Observer

open access: yes, 2022
The YU Observer is an independent student publication, self-funded and published on a monthly basis throughout the academic ...

core   +2 more sources

Observer-study-based approaches to quantitatively evaluate the realism of synthetic medical images

open access: yesPhysics in Medicine and Biology, 2023
Objective. Synthetic images generated by simulation studies have a well-recognized role in developing and evaluating imaging systems and methods. However, for clinically relevant development and evaluation, the synthetic images must be clinically ...
Ziping Liu   +9 more
semanticscholar   +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   +2 more sources

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