Results 21 to 30 of about 282,171 (310)

Interactivity and integration in virtual courses [PDF]

open access: yesProceedings IEEE International Conference on Advanced Learning Technologies, 2002
Web based virtual courses focussing on content delivery only, have turned out not to be as successful as expected. We investigate reasons and suggest some remedies, using our own virtual database course for illustration. Interactivity and integration are the two main remedies, which will lead towards improved, learning oriented virtual course ...
openaire   +2 more sources

Earthworm Grazed-Trichoderma harzianum Biofortified Spent Mushroom Substrates Modulate Accumulation of Natural Antioxidants and Bio-Fortification of Mineral Nutrients in Tomato

open access: yesFrontiers in Plant Science, 2018
The present investigation was aimed at evaluating the impact of earthworm grazed and Trichoderma harzianum biofortified spent mushroom substrate (SMS) on natural antioxidant and nutritional properties of tomato.
Udai B. Singh   +12 more
doaj   +1 more source

NURBS-Based Isogeometric Analysis Method Application to Mixed-Mode Computational Fracture Mechanics [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2019
An interaction integral method for evaluating mixed-mode stress intensity factors (SIFs) for two dimensional crack problems using NURBS-based isogeometric analysis method is investigated. The interaction integral method is based on the path independent J-
Abdolghafour Khademalrasoul
doaj   +1 more source

Correlation function and electronic spectral line broadening in relativistic plasmas [PDF]

open access: yesSerbian Astronomical Journal, 2013
The electrons dynamics and the time autocorrelation function Cee(t) for the total electric microfield of the electrons on positive charge impurity embedded in a plasma are considered when the relativistic dynamic of the electrons is taken into ...
Douis S., Meftah M.T.
doaj   +1 more source

Bound States of the Exchange—Correlation Excitons in the Uniform Electron Gas by the Monte Carlo Simulations

open access: yesUniverse, 2022
The modified path integral representation of Wigner functions and the new Monte Carlo approach has been suggested to account for the impact of the interparticle interaction on the Pauli exclusion principle of fermions.
Vladimir Filinov   +2 more
doaj   +1 more source

Design of 2D TeraHertz band-gap photonic waveguides using an accelerated integral equation technique [PDF]

open access: yes, 2009
This paper describes the application of the buffered block forward backward (BBFB) method to the problem of modeling 2D terahertz (THz) photonic band gap waveguides at the frequency of 3 THz.
D. Bogusevschi   +7 more
core   +1 more source

Asymptotical estimation of oscillatory integral

open access: yesLietuvos Matematikos Rinkinys, 2009
The oscillatory integral is important for averaging of weakly nonlinear differential systems. Uniformly valid for parameters estimation of the integral can be use for substantiation of averaging method for wave interaction modelling.
Aleksandras Krylovas
doaj   +1 more source

From Interactions to Integrations [PDF]

open access: yes, 1997
This address offers a reflection on the aptness of the metaphor of interactive technologies, in light cf developments over the past ten years. It argues for a shift from the focus on interaction narrowly defmed, to a project of integration of artifacts into work environments and working practices.
openaire   +1 more source

Integrity Constraints and Interactive Concept-Learning [PDF]

open access: yes, 1991
Abstract We show how our interactive concept-learner Clint can be enhanced with capabilities to handle integrity constraints. In this version of Clint, the user may supply general first order logic clauses as integrity constraints to the system. The system will then assure that these constraints are satisfied by the learned knowledge base.
De Raedt, Luc   +2 more
openaire   +2 more sources

Numerical Simulation of Crack Propagation in Dissimilar Metal Welded Region Based on Interaction Integral

open access: yesYuanzineng kexue jishu
A large number of dissimilar metal welded materials exist in nuclear power structures, so the accurate evaluation of crack propagation in welded region is highly relevant to the safe service of nuclear power equipment.
BAI Xiaoming1,  XIONG Furui1,  XIE Hai1,  SHI Kaikai1,  YU Xinyang1,  YU Hongjun2
doaj   +1 more source

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