Search results for "Comunicaciones"
showing 10 items of 175 documents
Evaluating temporary retail price discounts using semiparametric regression
2009
PurposeTo analyze the impact of temporary retail price discount on a consumer goods product category using semiparametric regression and considering different promotional price discount characteristics as well as brand characteristics.Design/methodology/approachA semiparametric regression model using Support Vector Machines, which aim to evaluate retailers' decisions about temporary price discounts, has been developed. The model is derived from the analysis of historical sales data, which provide precise evaluation of previous temporary price discounts periods. The model is also consistent with ample empirical evidence showing that historical retail sales data can be used to evaluate the im…
Impact of texture TDS and flavour TDS tasks and of chocolate-chip biscuit characteristics on oral processing features
2019
The objective of the present study was to investigate differences in oral activity when biscuits of the same type but with subtle composition differences are consumed and how performing a Temporal Dominance of Sensations (TDS) task modifies the way one eats. In addition, comparisons were made between performing a texture TDS (T-TDS) and a flavour TDS (F-TDS). Oral activity while eating biscuits with and without conducting a TDS task was recorded using a 3.dimensional motion capture system to monitor the evolution of jaw movements. The results showed that oral activity evolved over the consumption time, differed depending on the texture of the sample and was affected to a small but significa…
Retrieval of vegetation height in rice fields using polarimetric SAR interferometry with TanDEM-X data
2017
This work presents for the first time a demonstration with satellite data of polarimetric SAR interferometry (PolInSAR) applied to the retrieval of vegetation height in rice fields. Three series of dual-pol interferometric SAR data acquired with large baselines (2–3 km) by the TanDEM-X system during its science phase (April–September 2015) are exploited. A novel inversion algorithm especially suited for rice fields cultivated in flooded soil is proposed and evaluated. The validation is carried out over three test sites located in geographically different areas: Sevilla (SW Spain), Valencia (E Spain), and Ipsala (W Turkey), in which different rice types are present. Results are obtained duri…
La construcció mediàtica de la justícia. Una aproximació crítica als discursos televisius entorn de la realitat jurídica
2021
L'enunciat d'aquesta tesi apunta de manera explícita al seu objectiu fonamental, realitzar una aproximació crítica a les construccions mediàtiques, especialment les televisives, realitzades entorn de la realitat jurídica espanyola, a la seua estructura i, essencialment, a la seua dinàmica. Una aproximació crítica que al·ludeix, en primer lloc, a la confrontació de la lògica mercantil dominant en la dinàmica comunicativa general de les empreses i els mitjans de comunicació globals i locals (espanyols) amb la lògica sociocomunicativa que en aquesta tesi es denomina responsabilitat comunicativa. En segon lloc, a les implicacions d'aquesta lògica mercantil televisiva de la realitat de la justíc…
Gestión de la comunicación política. Estudio de caso de la campaña interna desarrollada por renovadores UPyD
2017
Producción Científica
Effect of an upright (vs. stooped) posture on interpretation bias, imagery, and emotions
2020
[EN] Background and objectives: Adopting an upright (vs. stooped) posture has been related to positive effects on emotional and cognitive processes. However, there is no evidence concerning the effect of posture on two key processes associated with the maintenance of depression: interpretation bias and vividness of mental imagery. The objectives were to investigate the effect of adopting an upright (vs. stooped) posture on interpretation bias and vividness of positive and negative mental imagery, and to explore the interplay between these processes and depression-related emotions. Methods: The sample consisted of 54 participants (M-age = 22.00, 64.8% women), who were randomly assigned to th…
On the performance of a linearized dual parallel Mach Zehnder electro-optic modulator
2014
The performance of a dual parallel differential Mach-Zehnder modulator broadband linearization architecture is analysed. This study provides experimental and analytical results showing an enhancement up to 20 dB in the 3rd-order intermodulation distortion factor at 5 GHz using RF and optical asymmetrical feeding factors.
An attention-based weakly supervised framework for spitzoid melanocytic lesion diagnosis in whole slide images
2021
[EN] Melanoma is an aggressive neoplasm responsible for the majority of deaths from skin cancer. Specifically, spitzoid melanocytic tumors are one of the most challenging melanocytic lesions due to their ambiguous morphological features. The gold standard for its diagnosis and prognosis is the analysis of skin biopsies. In this process, dermatopathologists visualize skin histology slides under a microscope, in a highly time-consuming and subjective task. In the last years, computer-aided diagnosis (CAD) systems have emerged as a promising tool that could support pathologists in daily clinical practice. Nevertheless, no automatic CAD systems have yet been proposed for the analysis of spitzoi…
La brecha digital de género en la Comunidad Valenciana: Descripción y análisis de datos
2023
El presente informe pretende analizar de forma cuantitativa el fenómeno de la brecha digital desde una perspectiva de género. Las conexiones digitales se han convertido en uno de los vectores sociales más importantes, es por eso que este informe trata de analizar las diferencias existentes entre hombres y mujeres en la Comunidad Valenciana en relación con las TIC. Mediante el análisis de los resultados de una macroencuesta telefónica a más de 4.000 personas, se analiza la brecha digital de género en 5 dimensiones distintas: la dimensión del acceso, la dimensión del uso, la dimensión de las competencias, la dimensión de la autopercepción de facilidad y la dimensión de la confianza. Estas dif…
Robust γ-filter using support vector machines
2009
This Letter presents a new approach to time-series modelling using the support vector machines (SVM). Although the g-filter can provide stability in several time-series models, the SVM is proposed here to provide robustness in the estimation of the g-filter coefficients. Examples in chaotic time-series prediction and channel equalization show the advantages of the joint SVM g-filter. Teoría de la Señal y Comunicaciones