Search results for "Item"
showing 10 items of 363 documents
Study on press coverage about the exodus of Spanish nurses to the United Kingdom
2019
Resumen: Objetivo: Analizar la representación mediática del éxodo de las enfermeras españolas al Reino Unido a través de los diarios de información general. Métodos: Análisis de contenido, cuantitativo y cualitativo. Se localizaron con operadores booleanos los documentos publicados en los diarios ABC, El País, El Mundo y La Razón, sobre «emigrantes», «enfermeras» y «sanitarias emigrantes», desde el 1 de enero de 2007 hasta el 31 de diciembre de 2016. El periodo seleccionado se corresponde con el inicio de la crisis económica y concluye con el año de la celebración del referéndum del Brexit en el Reino Unido. Tras aplicar los descriptores se obtuvieron 9559 textos. Una vez eliminado el «ruid…
Item transformation for computer asisted language testing: The adaptation of the Spanish University entrance examination
2010
Since the Spanish Educational system is changing and promoting the use of online tests, it was necessary to study the transformation of test items in the 'Spanish University Entrance Examination' (IB P.A.U.) to diminish the effect of test delivery changes (through its computerization) in order to affect the least the current model. The purpose of this study was to describe and suggest the properties of a new test item taxonomy for the Spanish University Entrance Examination. After a convenient study and piloting by using previous research in computer-based language testing, the researchers created a taxonomy of test items for the I.B. PAU Keywords: Language test; item design; computers; edu…
Direct Evidence for Viral Antigen Presentation during Latent Cytomegalovirus Infection
2021
Murine models of cytomegalovirus (CMV) infection have revealed an immunological phenomenon known as “memory inflation” (MI). After a peak of a primary CD8+ T-cell response, the pool of epitope-specific cells contracts in parallel to the resolution of productive infection and the establishment of a latent infection, referred to as “latency.” CMV latency is associated with an increase in the number of cells specific for certain viral epitopes over time. The inflationary subset was identified as effector-memory T cells (iTEM) characterized by the cell surface phenotype KLRG1+CD127−CD62L−. As we have shown recently, latent viral genomes are not transcriptionally silent. Rather, viral genes are …
The Spirituality Questionnaire: Core Dimensions of Spirituality
2012
Various approaches are used to assess spirituality via questionnaires, ranging from one-dimensional scales to highly multidimensional models. For the present investigation, an – in spirituality research unorthodox – factor analytic method was chosen: principal axis analysis with oblique rotation. An item collection was examinated and cross-validated via internet. The spirituality questionnaire contains four dimensions: belief in God, search for meaning, mindfulness, and feeling of security. They present with high internal consistencies. The factorial structure of the four dimensions was confirmed. Based on the better fit of this method of extraction the authors assume that these dimensions …
Assessing first-year engineering students' pre-university mathematics knowledge: preliminary validity results based on an item response theory model
2020
The importance of students’ prior knowledge to their current learning outcomes cannot be overemphasised. Students with adequate prior knowledge are better prepared for the current learning materials than those without the knowledge. However, assessment of engineering students' prior mathematics knowledge has been beset with a lack of uniformity in measuring instruments and inadequate validity studies. This study attempts to provide evidence of validity and reliability of a Norwegian national test of prior mathematics knowledge using an explanatory sequential mixed-methods approach. This approach involves use of an item response theory model followed by cognitive interviews of some students …
Context-aware intelligent video analysis for the management of smart buildings
2019
To date, computer vision systems are limited to extract digital data of what the cameras "see". However, the meaning of what they observe could be greatly enhanced by environment and human-skills knowledge.In this work, we propose a new approach to cross-fertilize computer vision with contextual information, based on semantic modelization defined by an expert.This approach extracts the knowledge from images and uses it to perform real-time reasoning according to the contextual information, events of interest and logic rules. The reasoning with image knowledge allows to overcome some problems of computer vision such as occlusion and missed detections and to offer services such as people guid…
Eritema multiforme: Revisión y puesta al día
2004
El sistema multiforme es una enfermedad de la piel y las mucosas que se manifiesta con lesiones eritematosas y de tipo vesiculo-ampollar. Las lesiones vesiculo-ampollares y erosivas a nivel de la cavidad oral y la piel pueden ser vausadas por un amplio grupo de patologias. La etiologia de la mismas tambien puede ser muy variable, desde una causa traumatica o quimica por contacto, hasta una causa autoinmune. Dado que en ocasiones es dificil hacer un diagnostico diferencial para discernir la etiologia de las lesiones, es importante conocer los detalles clinicos y los aspectos epidemiologicos e histopatologicos de cada una de ellas. En este articulo se hace una revision de los aspectos epidemi…
Le scale di misura della soddisfazione lavorativa: una rassegna critic
2019
Introduction. Job satisfaction is very significant in the field studies of occupational wellbeing. A vast number of published studies have suggested a link between Job satisfaction levels and both organizational behavior and physical and mental health. The detection of effective intervention strategies needs an accurate assessment. Therefore, the problem of choosing precise measurement instruments takes place. Objectives. The present paper is aimed to provide a framework about the characteristics of available measures ofJob satisfaction, in its globality, as a unit, as well as in its component parts. Methods. A critical review was conducted, systematically describing instruments as classifi…
Design, Development and Evaluation of a System for the Detection of Aerial Parts and Measurement of Growth Indices of Bell Pepper Plant Based on Ster…
2022
During the growth of plants, monitoring them brings much benefits to the producers. This monitoring includes the measurement of physical properties, counting plants leaves, detection of plants and separation of them from weeds. All these can be done different techniques, however, the techniques are favorable that are non-destructive because plant is a very sensitive creature that any manipulation can put disorder in its growth or lead to losing leaves or branches. Imaging techniques are of the best solutions for plants growth monitoring and geometric measurements. In this regard, in this project the use of stereo imaging and multispectral data was studied. Active and passive stereo imaging …
Pretest-Posttest-Posttest Multilevel IRT Modeling of Competence Growth of Students in Higher Education in Germany
2016
Longitudinal research in higher education faces several challenges. Appropriate methods of analyzing competence growth of students are needed to deal with those challenges and thereby obtain valid results. In this article, a pretest-posttest-posttest multivariate multilevel IRT model for repeated measures is introduced which is designed to address educational research questions according to a German research project. In this model, dependencies between repeated observations of the same students are considered not, as usual, by clustering observations within participants but rather by clustering observations within semesters. Estimation of the model is conducted within a Bayesian framework. …