Search results for " WEB"
showing 10 items of 1173 documents
Measuring consumers’ level of satisfaction for online food shopping during COVID-19 in Italy using POSETs
2021
Abstract The pandemic COVID 19 has upset the economic, social, financial, and general behavioral systems. Global crisis has a large impact overall and related fallouts significantly affect existent structural paradigms in every country and region across the world. In particular, the spread of COVID-19 pandemic has led to having to rethink the way we produce and consume food. Within this global change, a rise in the number of consumers who purchase food products online in order to comply with the rules aimed at limiting the circulation of the virus should be emphasized. Consequently, probably causing a long-term positive effect on m-commerce. The purpose is to elaborate on the index of the s…
Implantación de recursos didácticos digitales en asignaturas de Organización de Empresas
2013
El objetivo de este artículo es presentar el protocolo de implantación de diversas herramientas didácticas, así como el nivel de satisfacción de los estudiantes que las utilizan. Los resultados muestran, primero, que no es posible crear un único protocolo aplicable a todos los recursos, debido a las diferencias en los objetivos didácticos existentes. Segundo, la valoración que los estudiantes hacen de la utilización de los recursos es muy positiva, aunque existen algunas diferencias entre las distintas herramientas. Estos resultados permiten mejorar los recursos y adecuarlos al perfil de los estudiantes para que éstos puedan sacar el mayor provecho posible.
Does plant growth phase determine the response of plants and soil organisms to defoliation?
2005
Abstract To test a hypothesis that the effects of defoliation on plant ecophysiology and soil organisms depend on the timing of defoliation within a growing season, we established a greenhouse experiment using replicated grassland microcosms. Each microcosms was composed of three plant species, Trifolium repens , Plantago lanceolata and Phleum pratense , growing in grassland soil with a diverse soil community. The experiment consisted of two treatment factors—defoliation and plant growth phase (PGP)—in a fully factorial design. Defoliation had two categories, i.e. no trimming or trimming a total of four times at 2 week intervals. The PGP treatment had four categories, i.e. 1, 3, 7 or 13 wee…
Open Access E-Journals : past, present, and future
2015
Comienza este artículo trazando el origen y desarrollo de las revistas electrónicas en acceso abierto, cómo surgieron, se fueron definiendo y a qué necesidades respondieron. Se explica cómo se produjo la transición del mundo impreso al electrónico en el diseño y concepción de las revistas; y se señala exactamente cuando se produjo el despegue de este tipo de publicaciones. Para describir la situación actual de las revistas se recurre a los datos proporcionados por el directorio de publicaciones electrónicas Ulrichs y al directorio de revistas en acceso abierto DOAJ. Se calcula el número de revistas circulantes y se ofrece un retrato del perfil editorial de las revistas a día de hoy. Se desc…
Necessitats de formació dels docents universitaris en relació a les eines web 2.0 i perspectives futures
2012
El present treball mostra algunes necessitats de formació dels docents d'educació superior en relació a l'ús i aplicació de les Tecnologies d'Informació i Comunicació (TIC): eines Web 2.0, xarxes socials, sistemes o entorns personals d'aprenentatge (SPA/PLE), així com, el LMS Moodle, entre uns altres, i les projeccions per als pròxims 5 anys. L'objectiu en primer lloc és mostrar les necessitats de formació els docents universitaris en relació al tema i en segon lloc, crear consciència en les instàncies de decisió i en els propis educadors de la necessitat d'implementar i participar en massius plans de formació contínua i permanent, perquè puguen apropiar-se de les TIC i integrar-les al curr…
Effects of nitrogen enrichment on zooplankton biomass and N:P recycling ratios across a DOC gradient in northern-latitude lakes
2021
AbstractWe used data from whole-lake studies to assess how changes in food quantity (phytoplankton biomass) and quality (phytoplankton community composition, seston C:P and N:P) with N fertilization affect zooplankton biomass, community composition and C:N:P stoichiometry, and their N:P recycling ratio along a gradient in lake DOC concentrations. We found that despite major differences in phytoplankton biomass with DOC (unimodal distributions, especially with N fertilization), no major differences in zooplankton biomass were detectable. Instead, phytoplankton to zooplankton biomass ratios were high, especially at intermediate DOC and after N fertilization, implying low trophic transfer effi…
APIS to extract information in social channels in educational context
2018
In this days the world is involved in the research and development of new resources, and methods that allow the use of new technologies fulfilling a goal that is the learning of education through the Web, thus using resources such as different APIs for different purposes. Taking into account the functionalities provided by the APIs, the objective was to obtain information about the different educational resources in the social channels of the Universidad Tecnica Particular de Loja (UTPL). The study of pervious APIs is a part of the project Use of Cloud Computing tools, Bodies of Knowledge and affective computing in the process of developing technological skills focused on problem solving of…
A Data-Driven Approach to Dynamically Learn Focused Lexicons for Recognizing Emotions in Social Network Streams
2016
Opinion Mining aims at identifying and classifying subjective information in a collection of documents. A variety of approach exists in literature, ranging from Supervised Learning to Unsupervised Learning. Currently, one of the biggest opinion resource of opinionated texts existing on the Web is represented by Social Networks. Networks are not only a vast collection of documents but they also represent a dynamic evolving resource as the users keep posting their own opinions. We based our work relying on this idea of dynamicity, building an evolving model that updates itself in real time as users submit their posts. This is done through a set of supervised techniques based on a Lexi- con of…
Integrated three-dimensional models for noninvasive monitoring and valorization of the Morgantina silver treasure (Sicily)
2016
The Morgantina silver treasure belonging to the Archaeological Museum of Aidone (Sicily) was involved in a three-dimensional (3-D) survey and diagnostics campaign for monitoring the collection over time in anticipation of their temporary transfer to the Metropolitan Museum of Art in New York for a period of 4 years. Using a multidisciplinary approach, a scientific and methodological protocol based on noninvasive techniques to achieve a complete and integrated knowledge of the precious items and their conservation state, as well as to increase their valorization, has been developed. All acquired data, i.e., 3-D models, ultraviolet fluorescence, x-ray images, and chemical information, will be…
From technology engineering to social engineering
2007
Virtual worlds have a long history, and it also includes various technologies. Yet research interest towards them has diverged over the years. It seems that nowadays they are on focus again with the evolution of socially oriented and community-supporting virtual worlds. Instead of technical factors, human factors and the motivation behind the use are highlighted. In this paper, we will briefly review the research efforts made in the 90's, and derive a set of themes that were of interest back then. Next, we will expand the set by arguing for newer themes, identified in the latest information systems literature. These two sets of themes form a basis of a research agenda for studying virtual w…