Results 51 to 60 of about 244,652 (251)

Experimental determination of thermal turbulence effects on a propagating laser beam

open access: yesOpen Physics, 2015
The effect of turbulence on propagating laser beams has been a subject of interest since the evolution of lasers back in 1959. In this work, an inexpensive and reliable technique for producing interferograms using a point diffraction interferometer (PDI)
Ndlovu Sphumelele C., Chetty Naven
doaj   +1 more source

The Influence of Senior Secondary School Learners’ Attitudes Towards Mathematics on Their Performance in Selected Rural Secondary Schools in Vhembe West District [PDF]

open access: yesJournal of Studies in Social Sciences and Humanities, 2022
The study investigated the influence of learners’ attitudes on their Mathematics performance in some selected secondary schools in Vhembe West District. The researcher used a mixed methods approach in this study.
Simon A. Tachie , M. Mafhenya
doaj  

RSA Study of Dimers

open access: yes, 2012
The first theoretical study of a dimer's adsorption process at homogenous surface is presented. By using the RSA algorithm, we show example monolayers, discuss estimations of random jamming coverage and measure the surface blocking function, which could ...
Barbasz, Jakub, Ciesla, Michal
core   +1 more source

Food for thought: how nutrients regulate root system architecture [PDF]

open access: yes, 2017
The spatial arrangement of the plant root system (root system architecture, RSA) is very sensitive to edaphic and endogenous signals that report on the nutrient status of soil and plant.
Amtmann, Anna, Shahzad, Zaigham
core   +1 more source

Hierarchical Summary Statistics Encoding Across Primary Visual and Posterior Parietal Cortices

open access: yesAdvanced Science, EarlyView.
This study shows that mouse V1 simultaneously encodes the ensemble mean and variance of motion, providing a robust summary‐statistic representation that persists despite single‐neuron variability. These signals propagate to PPC, where they are transformed into abstract category representations during decision making.
Young‐Beom Lee   +4 more
wiley   +1 more source

Deep Learning-Based Detection of Oil Spills in Pakistan’s Exclusive Economic Zone from January 2017 to December 2023

open access: yesRemote Sensing
Oil spillages on a sea’s or an ocean’s surface are a threat to marine and coastal ecosystems. They are mainly caused by ship accidents, illegal discharge of oil from ships during cleaning and oil seepage from natural reservoirs. Synthetic-Aperture Radar (
Abdul Basit   +4 more
doaj   +1 more source

Public Key Cipher with Signature Based on Diffie-Hellman and the Magic Square Problem [PDF]

open access: yesEngineering and Technology Journal, 2016
In the present paper, wedeveloped a new variant of asymmetric cipher (Public Key) algorithm based on the Discrete Logarithm Problem (DLP) uses Diffie-Hellman key exchange protocol and the mathematical features of magic square.
Abdul S.Rahma   +2 more
doaj   +1 more source

Autonomic nervous system functioning assessed during the Still-Face Paradigm: A meta-analysis and systematic review of methods, approach and findings. [PDF]

open access: yes, 2018
Animal and human research suggests that the development of the autonomic nervous system (ANS) is particularly sensitive to early parenting experiences.
Alkon, Abbey   +3 more
core  

Reverse shoulder prosthesis in patients with rheumatoid arthritis: a systematic review [PDF]

open access: yes, 2015
PURPOSE: To obtain detailed information on the outcomes of patients with rheumatoid arthritis (RA) undergoing reverse shoulder arthroplasty (RSA) METHODS: A literature search was conducted for studies reporting on the use of RSA in RA patients from 1990
Canero, Gianfranco   +4 more
core   +1 more source

Main‐Chain Ion‐Pair Polybenzimidazole Membranes Enabling Reduced‐Temperature HT‐PEMFC Operation (Down to 120°C)

open access: yesAdvanced Energy Materials, EarlyView.
Embedding imidazolium‐biphosphate ion pairs directly into the polybenzimidazole main chain simultaneously stabilizes phosphoric acid and preserves continuous proton transport pathways. Strong ion‐pair and hydrogen‐bond interactions suppress acid leaching while maintaining high conductivity, enabling stable and durable high‐temperature fuel cell ...
Huina Lin, Brian C. Benicewicz
wiley   +1 more source

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