Results 1 to 10 of about 139,027 (214)

As Symbol as That: Inconsistencies in Symbol Systems of Alleles in Textbooks, and Students’ Justifications for Them

open access: yesEducation Sciences, 2018
In genetics education, symbols are used for alleles to visualize them and to explain probabilities of progeny and inheritance paradigms. In this study, we identified symbol systems used in genetics textbooks and the justifications provided for changes in
Gur A. Livni-Alcasid   +2 more
doaj   +3 more sources

The First Step to Learning Place Value: A Role for Physical Models?

open access: yesFrontiers in Education, 2021
Very few questions have cast such an enduring effect in cognitive science as the question of “symbol-grounding”: Do human-invented symbol systems have to be grounded to physical objects to gain meanings? This question has strongly influenced research and
Lei Yuan   +4 more
doaj   +1 more source

A robust symbol timing strategy for cellular systems

open access: yesDigital Communications and Networks, 2023
In cellular systems, establishing the initial symbol timing of potential preambles is the first step of a cell search. The envelope fluctuation of the downlink signal hinders the successful timing of conventional symbol timing methods.
Yangpeng Dan   +4 more
doaj   +1 more source

Robust Symbol Detection in Large-Scale Overloaded NOMA Systems

open access: yesIEEE Open Journal of the Communications Society, 2021
We a framework for the design of low-complexity and high-performance receivers for multidimensional overloaded non-orthogonal multiple access (NOMA) systems.
Hiroki Iimori   +6 more
doaj   +1 more source

Narrative Potential of Picture-Book Apps: A Media- and Interaction-Oriented Study

open access: yesFrontiers in Psychology, 2020
Digital literature is playing an increasingly important role in children's everyday lives and opening up new paths for family literacy and early childhood education.
Claudia Müller-Brauers   +5 more
doaj   +1 more source

On Multi-User Deep-Learning-Based Non-Coherent DPSK Multiple-Symbol Differential Detection in Massive MIMO Systems

open access: yesIEEE Access, 2021
In view of reducing the complexity of signal detection in massive multiple-input multiple-output (MIMO) receivers, the use of non-coherent detection is favored over usual coherent techniques that require complex channel estimation.
Omnia Mahmoud   +2 more
doaj   +1 more source

Performance-Driven Symbol Mapping for Downlink and Point-to-Point MIMO Systems

open access: yesEURASIP Journal on Wireless Communications and Networking, 2011
An adaptive symbol mapping scheme is proposed for single-user point-to-point and multiuser downlink multiple-input multiple output (MIMO) systems aiming at the minimization of the overall system bit error rate.
E. Alsusa, C. Masouros
doaj   +2 more sources

Innovation symbol systems: Multimodal grammars and vocabularies for facilitating mutual innovation knowledge

open access: yesJournal of Innovation & Knowledge, 2019
Symbol systems can provide topic-specific languages comprising multimodal grammars and vocabularies. Symbol systems can facilitate mutual knowledge for innovation when people do not already have a common language for effective communication about an ...
Stephen Fox   +2 more
doaj   +1 more source

Nonlinear elliptic systems

open access: yesAnais da Academia Brasileira de Ciências, 2000
In this paper we treat the question of the existence of solutions of boundary value problems for systems of nonlinear elliptic equations of the form - deltau = f (x, u, v,Ñu,Ñv), - deltav = g(x, u, v, Ñu, Ñv), in omega, We discuss several classes of such
DJAIRO G. DEFIGUEIREDO
doaj   +1 more source

CaMeRe: A Novel Tool for Inference of Cancer Metabolic Reprogramming

open access: yesFrontiers in Oncology, 2020
Metabolic reprogramming is prevalent in cancer, largely due to its altered chemical environments such as the distinct intracellular concentrations of O2, H2O2 and H+, compared to those in normal tissue cells.
Haoyang Li   +8 more
doaj   +1 more source

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