Search results for "Conducta"

Distracted driving in relation to risky road behaviors and traffic crashes in Bogota, Colombia

2022

The growing evidence on road distraction during the recent years has shown how road distractions might be playing a relevant role on traffic crash causation. However, the empirical insights about how it works in low- and middle-income countries (LMICs) are really limited so far. The case of Colombian non-professional drivers remains virtually unexplored on this regard. This research aims to assess the effect of road distractions, driving-related issues and road behaviors on the self-reported crashes suffered by drivers in Bogotá, Colombia. To do so, a sample of 659 drivers (64% males and 36% females) with a mean age of 37.9 years (SD = 11.7) was gathered, who answered an online survey on ro…

ChemInform Abstract: High Electrical Conductance of Single Molecules: A Challenge in the Series of Conjugated Oligomers

2009

En route to molecular electronics: As extended, conjugated oligomers are desirable for molecular electronics, their electrical conductance should display a low attenuation factor. Zinc-complexed oligo(ethynyleneporphyrindiylethynylene)s have been prepared that are distinguished by ultralow attenuation factors in single-molecule conductance.

Different levels of loyalty towards the higher education service: evidence from a small university in Spain

2020

Higher Education Institutions (HEIs) operate in a competitive environment in which the universities must address issues of customer satisfaction and loyalty. This process requires that educational institutions carefully analyse the key factors contributing to student loyalty in all its dimensions and develop strategies accordingly. Customer loyalty is a consistent commitment deeply held by customers to re-purchasing and/or recommending the product or service. This paper aims at understanding the different levels of student loyalty towards HEIs through an empirical study run with 705 graduate students from a small University. According to the students' personal and situational characteristic…

Leaf water relation traits in typical Sicilian varieties of Vitis vinifera L.

2014

In Italy, grapevines are extensively cultivated, with Sicily representing one of the most significant wine regions. The high number of autochthonous grapevine varieties represents an important source of genetic diversity, and the many Sicilian varieties have anatomical and physiological traits that allow them to resist to different levels of drought stress. We investigated the water relation parameters of four cultivars of Vitis vinifera L. (Catarratto, Corinto, Nero d'Avola and Zibibbo) and characterized their leaf hydraulics. Measurements were conducted during summer on plants growing in the experimental field of the IBBR-CNR near Palermo. Daily patterns of leaf water potential (Yleaf) an…

Effects of drought and re-watering on water transport in Sedum sediforme (Jacq.) Pau

2011

Recovery from water stress in laurel plants: influence of short term potassium fertilization

2013

Plant xylem hydraulic conductance varies with changes in sap solute concentrations, particularly potassium, a phenomenon known as 'ionic effect'. In well-watered Laurus nobilis plants, short term potassium fertilization increased xylem sap potassium concentration, resulting in an increase in plant hydraulic conductance (Kplant), leaf-specific conductivity of the shoot (kshoot) and transpiration rate (Eplant). The ionic effect is enhanced in embolized stems, where it can compensate the cavitation-induced loss of hydraulic conductance. The aim of this work was to test if water-stressed potassium-starved laurel plants could recover earlier from stress when irrigated with a potassium solution i…

Ionic shortcut currents via manifolds in reverse electrodialysis stacks

2020

Abstract Reverse electrodialysis (RED) is a blue energy technology for clean and sustainable electricity harvesting from the mixing entropy of salinity gradients. Recently, many efforts have been devoted to improving the performance of RED units by developing new ion-exchange membranes and by reducing the detrimental phenomena affecting the process. Among these sources of “irreversibility”, the shortcut currents (or parasitic currents) flowing through alternative pathways may affect the process efficiency. Although such phenomena occur in several electrochemical processes (e.g. fuel cells, bipolar plate cells and vanadium redox flow batteries), they have received a poor attention in RED uni…

Sangre de nobles, mártires y pecadores. Los caballeros de San Juan entre la reforma religiosa y la vida militar

2018

After the fall of Rhodes in 1522, the Order of St. John needed to recover new headquarters (which were finally established in Malta in 1530) and its reputation as militia Christi. This Religion in arms had now to redraft its chivalrous ideals within the new context of the Reformation and the Catholic Renewal. However, Hospitallers met this challenge partially and late, although they represented themselves as belonging to this glorious Religion. Such a dialectic between practice and theory is proved, for example, by an apologetic book published in 1619 in Italy and Spain, as well as by unpublished instructions in the late seventeenth century directed at the chaplains providing religious supp…

Transexualidad, adolescencias y educación: miradas multidisciplinares

2017

En las últimas dos décadas, la temática trans (transexual/transgénero) ha emergido como un asunto de interés creciente a nivel social y cultural. Esto se ha debido, entre otros motivos, al trabajo de colectivos y asociaciones trans que han conseguido que las administraciones competentes legislaran a favor de sus necesidades y demandas en materia de educación, sanidad y ocupación. En la actualidad, una consecuencia de estos avances es la mayor visibilidad de las personas trans en los medios de comunicación y las redes sociales. Por ejemplo, una búsqueda reciente del término Transgender en Google (noticias) nos ha proporcionado un resultado de 3.160.000 artículos. En Norteamérica, gracias al …

Signal processing and frequency-dependent associative memory based on nanoswitches

2008

A signal processing concept based on nanoscale switches whose conductance can be tuned by an external stimulus between two (ON and OFF) states is proposed and analyzed theoretically. The building block of the system is formed by a metal nanoparticle linked to two electrodes by an organic ligand and a molecular switch. When we apply an alternating potential to the system of the same frequency as the periodic variation between the ON and OFF states induced on the switch, the net charge delivered by the system exhibits a sharp resonance. This resonance can be used to process an external signal by selectively extracting the weight of the different harmonics. In addition, a frequency-dependent a…