Search results for "pta"
showing 10 items of 4973 documents
Efectos mutacionales, evolución y adaptación en bacteriófagos de RNA y DNA de cadena sencilla
2012
Las dificultades que plantean los virus para su control se deben, en gran medida, a su rápida evolución. Factores responsables de esta rápida evolución son su rápida tasa de replicación, sus elevados tamaños poblacionales y su elevada variabilidad genética. Estos dos últimos factores aumentan la efectividad de la selección natural, permitiendo a los virus escapar no sólo a las defensas del hospedador, sino también a los fármacos antivirales o de las vacunas. La mutación es la fuente última de variación genética. Por ello, la tasa de mutación es un parámetro fundamental para entender la evolución. No obstante, la relación entre tasa de mutación y adaptación no es inmediata. Por un lado, la p…
Exploring User Acceptance of Free Wireless Fidelity Public Hot Spots : An Empirical Study
2008
Research regarding commercial and free wireless fidelity (Wi-Fi) public hot spots acceptance and adoption is sketchy. Therefore, it has become imperative to understand the critical factors that affect their acceptance. The focus of this study is free Wi-Fi public hot spot users, with the objective to better understand their user acceptance. In doing so, this study integrated two well-established initial acceptance models, specifically, the technology acceptance model and the diffusion of innovation theory. This study was conducted using an on-line survey that collected data from 129 users. It uses the Partial Least Square (PLS) technique to examine the relationship between variables. The re…
Extending the Technology Acceptance Model with Personal Innovativeness and Technology Readiness : A Comparison of Three Models
2016
This study concentrates on the role of personal traits in technology acceptance by comparing which of the two personal trait constructs commonly used in IS research, personal innovativeness in the domain of information technology (PIIT) or technology readiness index (TRI), performs better in terms of promoting the explanatory power of the technology acceptance model (TAM). The comparisons are conducted in the case context of online services offered by electric suppliers, and the study is based on the data collected from 1,176 consumers through an online survey and analysed by using structural equation modelling (SEM). The findings of the study show that the inclusion of both PIIT and TRI in…
An Acceptance Model for Useful and Fun Information Systems
2006
Investigating the factors associated with user acceptance of new software systems has been an important research stream in the field of information systems for many years. The technology acceptance model has long been used to examine the acceptance of utilitarian systems. Recently, it has been used to examine recreational or pleasure-oriented systems. Many examples exist of software that, depending on the context of use, can be used for productive and pleasurable interaction. This paper examines the determinants of use of one such “dual” system. A survey of users of a dual system was conducted. Results show that perceived usefulness is more important in determining intention to use than per…
Is it really gender? An empirical investigation into gender effects in technology adoption through the examination of individual differences
2010
A recent development in the technology acceptance literature is the inclusion of gender as a moderator of the relationships between intention and its antecedents, such that some are stronger for men than women, and vice versa. While the effects have been well established, the mechanisms by which they operate, that is, which specific gender differences are in operation and how they affect intention to adopt, have not been thoroughly explored. In this research, psychological constructs with established gender differences, such as core self-evaluations, computer self-efficacy and anxiety, psychological gender-role, and risk-taking propensity, are examined. In addition, this research introduces…
Finding a way to win: on competition, internationalization and MOOCs
2014
In the context of the ever growing use of technology through e-learning and open-courseware, my paper presents a project that is being carried out by a consortium of twelve partners and is coordinated by the University of Maastricht. This project sets out to examine the evolution of the innovative modes of higher education provision in teaching and learning across Europe, the motivations for their emergence as well as the ways in which higher education management and governance have responded and adapted to such new modes of provision. In the highly competitive sector of HE, while attempting to enhance the quality of teaching and learning, the increasing range of teaching and learning provi…
Adaptació del coeficient de GINI per a la formulació d'un coeficient de desigualtat lingüística
2020
El text adapta el Coeficient de Gini per elaborar un Coeficient de Desigualtat Lingüística (CDL) i aplicar-lo al cas valencià, tenint en compte les Taxes de Competència i les Taxes d?Ús. Es desenvolupen dos models, un basat en corbes parabòliques i un altre basat en corbes exponencials per al cas de disposar d?una parella de dades (x,y). Es calculen els Coeficients de Desigualtat Lingüística en ambdós casos per a les regions sociolingüístiques valencianes. Finalment es compara el resultat amb una corba general per al cas valencià
Note in tema di teorie contabili in Francia: dalle contabilità statiche e dinamiche al modello dualista
2009
Terapia por restricción del lado sano
2022
Este vídeo forma parte de una serie de vídeos que muestran diversas estrategias de intervención fisioterápica en personas con secuelas tras ictus. En él se detallan aspectos relevantes a considerar en la aplicación de la terapia por restricción del lado sano; y se muestran, en un caso clínico de hemiparesia izquierda, algunos ejemplos de tareas adaptadas incluidas en esta terapia.
Geography of production and incomes ?
2018
The idea that a difference exists between territories supported by the creation of wealth and others more focused on their spending was put forward by Laurent DAVEZIES. This author suggests a noticeableopposition between a geography of production and a geography of incomes. If the underlying transfers of income between these territories are supposed to ensure territorial and social cohesion, they would be a burden likely to decrease the efficiency of the most productive territories. It is therefore necessary, he says, to stop « incantations on the theme of territorial cohesion » and to condemn « discriminating policies in favor of territories creating growth ». However, these analyzes suffe…