Search results for "Direct"

Effects of tDCS on Bimanual Motor Skills: A Brief Review

2018

Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that allows the modulation of cortical excitability as well as neuroplastic reorganization using a weak constant current applied through the skull on the cerebral cortex. TDCS has been found to improve motor performance in general and motor learning in particular. However, these effects have been reported almost exclusively for unimanual motor tasks such as serial reaction time tasks, adaptation tasks, or visuo-motor tracking. Despite the importance of bimanual actions in most activities of daily living, only few studies have investigated the effects of tDCS on bimanual motor skills. The objectives …

Wiener-Granger Causality in Network Physiology with Applications to Cardiovascular Control and Neuroscience

2016

Since the operative definition given by C. W. J. Granger of an idea expressed by N. Wiener, the Wiener–Granger causality (WGC) has been one of the most relevant concepts exploited by modern time series analysis. Indeed, in networks formed by multiple components, working according to the notion of segregation and interacting with each other according to the principle of integration, inferring causality has opened a window on the effective connectivity of the network and has linked experimental evidences to functions and mechanisms. This tutorial reviews predictability improvement, information-based and frequency domain methods for inferring WGC among physiological processes from multivariate…

The beta-delayed proton and gamma decay of 27P for nuclear astrophysics

2013

The creation site of 26Al is still under debate. It is thought to be produced in hydrogen burning and in explosive helium burning in novae and supernovae, and possibly also in the H-burning in outer shells of red giant stars. Also, the reactions for its creation or destruction are not completely known. When 26Al is created in novae, the reaction chain is: 24Mg(p, γ) 25Al(β +ν) 25Mg(p, γ) 26Al, but this chain can be by-passed by another chain, 25Al(p, γ) 26Si(p, γ) 27P and it can also be destroyed directly. The reaction 26mAl(p, γ) 27Si∗ is another avenue to bypass the production of 26Al and it is dominated by resonant capture. We find and study these resonances by an indirect method, throug…

Journal of Economics and Management Research, Vol. 4/5

2016

De l’ingénierie de protéines de liaison aux odorants à la détection électrochimique de molécules volatiles vers la conception de biocapteurs et nez é…

2014

The detection of odorant molecules has become an important challenge in different research area, such as the food industry, medical diagnostics and homeland security. Indeed, the thousands of odorants in our environment provide information on their chemical nature or their concentration. Human olfactory system is capable of discriminating thousands of different molecules thanks to biochemical mechanisms involving multiple protein receptor partners and a combinatorial coding. These biomolecules that include olfactory receptors and odorant-binding proteins (OBP) represent an interesting source of detectors for the design of biosensors. OBPs are small soluble proteins present in nasal mucus at…

Multiple directorships of corporate boards and firm performance in India

2017

The purpose of the paper is to investigate, first, the association between multiple directorship assignments (busyness) undertaken by corporate directors and firm performance, second, whether endogenously determined limits of multiple directorships, highlighting the ownership structure and other institutional settings, explain the above association better than those by exogenously mandated by regulators and third, the association between the nature of busyness and firm performance. The study develops measures of busyness in the light of the agency and resource dependence theories. The spline regression technique is applied in order to reflect institutional settings of a large sample and sub…

Raising Awareness Of Students' Professional Identity. An Online Internship Path For Future Educators At The University Of Catania

2021

The COVID-19 pandemic has drastically changed the educational systems at all levels, demanding rapid adaptation to emergency remote learning. The closure of many educational centres and the restrictions resulting from the spread of the virus have therefore required the need to rethink internship activities. The universities are forced to switch from their pre-planned ‘face-to-face’ model to alternative models, mainly on-line, to allow the students to experience their future work settings and to encourage reflective thinking about the internship experience. The abstract presents an online internship proposal designed and tested by the Degree Course in Educational Sciences (L-19) of the Unive…

Recent progress in metal-organic frameworks (MOFs) for CO2 capture at different pressures

2022

Global climate change ensued by the rise in atmospheric CO2 levels is one of the greatest challenges our planet is facing today. This worldwide distress demands technologies that can contribute to our society toward “negative carbon emissions”. Carbon capture and storage (CCS) technologies are in in important role for capturing CO2 from existing emission sources, such as industrial and energy production point sources, before new more prominent modifications to the energy infrastructure can be implemented. Recently, alongside point source capture, direct air capture (DAC) processes have emerged as highly sought-after technologies that are able to capture CO2 from the ambient air. Alongside t…

Pair interactions in online assessments of collaborative problem solving: case-based portraits

2018

This exploratory case study focuses on how pairs of students can build a shared understanding and acquire collaborative problem-solving (CPS) practices during an online assessment of CPS skills, which is seen in the context of the CPS construct, in a symmetrical and asymmetrical task type. Even though CPS is widely recognised as a core twenty-first-century competency, its nature is not yet well understood. Also, until recently, most of studies have focused on the individual’s solution to a problem or on the skills individuals bring into a problem-solving space. This study extends from an individual- to group-level focus in CPS, emphasising the role and quality of the social aspects in CPS p…

Self-direction

2020

Self-direction refers to an individual’s responsibility and active role in relation to their own activities. It has largely been considered from the perspective of the individual, with self-direction being seen as a characteristic of the person, a linear process, or a feature influenced by the factors surrounding the individual. It is understood as a positive activity that promotes creativity and learning. However, the possibilities for self-direction have been less explored. The theme of self-direction and its possibilities comprise a topical and important perspective in the research on self-direction. peerReviewed