PROBLEMS WITH THE TREATMENT OF TIME IN THE TRAVEL COST METHOD

Research Methods/ Statistical Methods,

The initial public offering of high-technology firms: female executive managers and innovation

This study addresses how gender diversity in management teams influences the success of the IPO of research-intensive firms, and how critical indicators of innovation capabilities for those types of firms can mediate the gender effect

Compensation and speed of advancement in executive careers through the internal and external labor markets by gender

Our study aims at exploring whether internal and external moves have a different impact on the speed of advancement in executive careers, identifying gender differences in the influence of both mobility routes and understanding the impact of speed on compensation inequality.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Análisis del contenido argumentativo en un corpus de ensayos en inglés

El objetivo general del proyecto “Análisis del contenido argumentativo en un corpus de ensayos en inglés” como el título lo sugiere, analizar el contenido de los argumentos en el discurso mediante la comparación y contraste de ensayos escritos por los alumnos, para obtener un modelo de referencia en el contexto la argumentación. Para empezar a discutir un modelo argumentativo, es importante saber primero qué es un argumento. Van Dijk (1978) lo define como un diálogo persuasivo, cuyo objetivo es convencer al receptor de la credibilidad de la aseveración propuesta. Para ser consistente, todo argumento debe incluir enunciados aceptables, razonamientos válidos y un esquema argumentativo apropiado y correcto. Díaz (2009) identifica seis elementos, de los cuales tres son obligatorios y tres opcionales. Los obligatorios son: punto de vista o conclusión (P), fundamentación (F), y garante (G). Los opcionales, aunque no menos importantes, son: condicionamiento de la conclusión (Cd), concesión (K) y refutación (R).Como veremos, estos elementos provienen del análisis de las corrientes de la argumentación

Galactose:PEGamine coated gold nanoparticles adhere to filopodia and cause extrinsic apoptosis

Ultra-small gold nanoparticles, surface functionalised with a 50:50 ratio of a thiolated α-Galactose derivative and a thiolated hexaethylene glycol amine, are toxic to HSC-3 oral squamous carcinoma cells. Differences in nanoparticle toxicity were found to be related to synthesis duration, with 1 h reaction nanoparticles being less toxic than 5 h reaction nanoparticles. Ligand density decreased with longer reaction time, although size, charge and ligand ratio remained similar. The concentration of sodium borohydride in the reaction decreased logarithmically over 5 h but remained within a concentration range sufficient to desorb weakly-bound ligands, possibly explaining the observed gradual decrease in ligand density. Nanoparticle toxicity was abrogated by inhibition of either caspase 3/7 or caspase 8, but not by inhibition of caspase 9, consistent with extrinsic apoptosis. Electron microscopic analysis of cellular uptake demonstrated predominantly cytoplasmic localization. However, when energy-dependent transport was inhibited, by lowering the temperature to 4ºC, a remarkable adhesion of nanoparticles to filopodia was observed. Inhibition of filopodial assembly with a fascin inhibitor prevented nanoparticle adhesion to HSC-3 cells at 4ºC, while fascin inhibition at 37ºC resulted in less cytoplasmic uptake. More adhesion to HSC-3 filopodia was seen with the higher toxicity 5 h reaction time nanoparticles than with the 1 h nanoparticles. By including a further two cell types (HaCaT keratinocytes and hCMEC/D3 endothelial cells), a pattern of increasing toxicity with filopodial binding of 5 h reaction nanoparticles became apparent

Update Delay: A new Information-Centric Metric for a Combined Communication and Application Level Reliability Evaluation of CAM based Safety Applications

Standard network metrics, such as throughput, latency and reception probability, are the most popular performance indicators used in the literature to describe and compare communication protocol variations. However, these “traditional” network-centric PI are not adapted to the distributed, information-centric nature of the beaconing communication pattern, nor do they cover application level reliability or freshness of information. In this paper, we introduce a more suitable metric called Update Delay, represented as a Complementary Cumulative Distribution Function (CCDF). We will show how this single Update Delay performance indicator can be an optimal representation of the freshness and reliability of the information about a certain transmitter, i.e. awareness about vehicles and their current state in the vicinity. This paper extends on the methodological aspects of the approach, as well as introduces several concrete examples