Search results for "Presentation"
showing 10 items of 2405 documents
Changes in CD4+ cells’ miRNA expression following exposure to HIV-1
2010
Background: Micro RNAs (miRNAs) inhibit HIV-1 expression by either modulating host innate immunity or by directly interfering with viral mRNAs. Here, we investigated the miRNA profile that discriminates different classes of HIV-1-infected patients from multiple-exposed uninfected individuals. Methods: The expression levels of 377 miRNAs were selectively analysed in CD4+ cells isolated from whole blood of HIV-1 elite LTNP (eLTNP), naive, and multiply exposed uninfected individuals (MEUs). MiRNA extraction was performed by the mir Vana™ miRNA Isolation Kit (Ambion), and their expression was subsequently examined by real-time PCR-based arrays. The expression of miRNAs was also determined in pr…
¿Implicar a los estudiantes en la modificación de rúbricas influye sobre su percepción de validez?
2019
[EN] Oral presentation is one of the fundamental competences in the teaching-learning process for most of the university students and rubrics could be used as a useful tool in this process. Therefore, the main objective was to determine the perception of validity and utility of a rubric for students of the Physical Education and Sports Sciences degree, considering also if they were involved or not in the rubric’s development. 115 students participated, in two groups. The teacher of the subject gave to both groups the same rubric to evaluate their oral presentations. So, one of the groups modified and prepared the rubric´s elements. After oral presentations, both groups completed a rubric's …
Relación entre la percepción de validez de una rúbrica, el rendimiento académico y la autorregulación de estudiantes de ciencias del deporte
2021
[EN] The use of rubrics can be an especially useful tool to align the teaching, learning and evaluation processes of oral presentation. Its validity is essential to assess academic performance and may be influenced by student self-regulation. The objective of the study was to determine the perception of validity and utility of a rubric for students of the Physical Education and Sports Sciences degree, as well as to identify the relationship between this perception, their academic performance and their self-regulation. 123 students participated in the study. The teacher of the subject provided the rubric to evaluate oral presentations. After oral presentations, students answered two question…
Instagram w autoprezentacji politycznej. Analiza wizualna postów polskich kandydatów do Europarlamentu w 2019 roku
2020
This article reviews currently available literature on the role of Instagram in political communication and reports on the results of the analysis of 1976 Instagram posts of the most active politicians during the 2019 European parliamentary election campaign in Poland. With the aid of quantitative thematic analysis and qualitative visual rhetorical analysis, we identify the main patterns of self-representation of candidates and compare the forms of visualization and typical strategies of building ethos and mobilizing the voters across parties. We prove that traditional representations of candidates (delivering speeches, canvassing, shaking hands) and national (rather than European) symbols …
The Poisson problem: A comparison between two approaches based on SPH method
2012
Abstract In this paper two approaches to solve the Poisson problem are presented and compared. The computational schemes are based on Smoothed Particle Hydrodynamics method which is able to perform an integral representation by means of a smoothing kernel function by involving domain particles in the discrete formulation. The first approach is derived by means of the variational formulation of the Poisson problem, while the second one is a direct differential method. Numerical examples on different domain geometries are implemented to verify and compare the proposed approaches; the computational efficiency of the developed methods is also studied.
Mental contents in interacting with a multiobjective optimization program
2008
User psychology aims at understanding human-machine interaction from a psychological point of view. Its ultimate goal is to provide knowledge about human psychological properties for interaction designers. In this article, we are particularly interested in applying the theoretical concepts of mental contents (i.e., the information contents of users’ mental representations), in studying interaction with professional software. The immediate motivation for adopting such an approach arises from problems met in designing interaction processes in multiobjective optimization software. These types of software are meant to support complex thought and decision-making processes and this is why interac…
Model and Control Strategy Simulation of a Racing Series Hybrid Car
2014
Action-reaction principle of Energetic Macroscopic Representation (EMR) and its Inversion Based Control (IBC) is used to organize subsystems interconnection of Noao, a plug-in series hybrid race car equipped with lithium-ion battery pack and an engine/generator set as its range extender, according to the physical causality. Results from drive test of the real car are used to validate the model. The objective of this paper is to provide a dynamic model of this car in order to improve its control scheme and analyse the impact of its optimisation.
Primary Frequency Control in the Power System of Continental Europe including the Dynamics of the HVDC Link France-Great Britain
2020
The paper presents a study of primary frequency control within the power system of Continental Europe (CE) including the dynamics of the high voltage direct current (HVDC) link between France and Great Britain (GB). The large-scale dynamic model of the CE system originally provided by ENTSO-E is extended with a more detailed representation of the whole HVDC interconnection. The dynamics of the GB synchronous area is also considered in the analysis, implementing a system equivalent suitable for primary frequency control studies. The opportunity of frequency containment reserve exchange between the two areas through the link is also investigated, considering supplementary frequency controls w…
Hysteresis Model of Unconscious-Conscious Interconnection: Exploring Dynamics on m-Adic Trees
2015
The theoretical model outlined in this paper, has been experimentally validated by: H. Kim ,J-Y. Moon ,G.A. Mashour & U. Lee, ''Mechanisms of hysteresis in human brain networks during transitions of consciousness and unconsciousness: Theoretical principles and empirical evidence'', PLOS-Computational Biology, August 30, 2018, https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1006424; International audience; In this brief note, we focus attention on a possible implementation of a basic hysteretic pattern (the Preisach one), suitably generalized, into a formal model of unconscious-conscious interconnection and based on representation of mental entities by m-adic numbers. …
Cloned T helper cells reverting to a resting state develop increasing sensitivity in their antigen-mediated interaction with accessory cells.
1988
A cloned murine T cell line, KIII5, specific for the polypeptide poly-L(Tyr,Glu)-poly-D,L-Ala--poly-L-Lys [(T,G)-A--L] was compared at different stages after antigenic stimulation with respect to the conditions required for the reinduction of growth by varying concentrations of antigen presented on different types of accessory cells (AC). We show that the dose of antigen necessary for inducing half maximal proliferation in the presence of splenic AC shifts to considerably lower concentrations when the T cell blasts revert to a resting state (100 micrograms/ml on day 7 to 10 micrograms/ml on day 21-35). During the same time period the expression of interleukin 2 (IL2) receptor and the reacti…