Search results for "MOBILITY"
showing 10 items of 922 documents
Experimental investigation of the kink effect and the low frequency noise properties in pseudomorphic HEMT’s
2005
The kink effect in low-noise pseudomorphic (AlGaAs/InGaAs) HEMT's has been examined in detail by investigating the steady-state and pulsed I-V characteristics, the behavior of the output conductance dispersion and the performance of the gate leakage current to understand its origin. No clear evidence of impact ionization occurrence in the InGaAs channel at kink bias conditions (V-DS.kink = 1.5 V) has been found, thus suggesting that the predominant mechanism should be attributed to trap-related phenomena. A significant rise of the gate current has been found at very high drain voltages (far from V-DS.kink) associated with low drain current values which is probably due to impact ionization o…
Les exclus de la mobilité : de l'observation à la décision
2014
In contemporary societies, mobility is considered as a social norm necessary for integration. Conversely, immobility is often seen as the opposite. Therefore, it is associated with a significant risk of exclusion. An approach in terms of exclusion involves a sociological orientation. Nevertheless, this thesis follows a geographical approach. Thus, a first question emerges from this disciplinary position: immobility is it a geographical object? Furthermore, it is possible to consider the mobility and immobility as equivalent and not opposed. This means that their impact may not be reversed. This position engages a second question: the relationship between immobility and exclusion is it legit…
Autonomy Freedom and Preferences for Redistribution
2007
In this paper we study the determinants of people's attitudes toward income inequality and their consequences for redistributive policies. In the light of a recent literature in social choice theory, we argue that an individual's attitudes toward inequality depend upon the extent of autonomy freedom he/she enjoys. We use individual level data to validate our theory and show that the higher the extent of an individual's autonomy freedom, the greater the probability that he/she supports larger income differences as incentives for individual effort. Conversely, the lower the extent of autonomy freedom, the more likely he/she supports the view that incomes should be made more equal. These findi…
Multidimensional social capital in new ventures
2013
This paper analyzes and provides empirical evidence on how three different dimensions of social capital (structural, relational, and resources) have a direct causal relation on the performance of financial service start-ups. To this end, a structural equation model is estimated and validated from a database, including information from 142 Argentinean entrepreneurs who answered a questionnaire specifically designed for this research. The main finding of the paper is that the main source of value of social capital for an entrepreneur is the existence of high-quality links. Moreover, the quality of the entrepreneur's links is even more important than their quantity. This conclusion has relevan…
A J-MADeM Agent-Based Social Simulation to Model Urban Mobility
2011
The mobility models followed within metropolitan areas, mainly based on the massive use of the car instead of the public transportation, will soon become unsustainable unless there is a change of citizens’ minds and transport policies. The main challenge related to urban mobility is that of getting free-flowing greener cities, which are provided with a smarter and accessible urban transport system. In this paper, we present an agent-based social simulation approach to tackle this kind of social-ecological systems. The Jason Multi-modal Agent Decision Making (JMADeM) library enable us to model and implement the social decisions made by each habitant about how to get to work every day, e.g., …
Socio-economic inequalities and organized crime: An empirical analysis
2020
In this chapter we contribute to the recent literature (e.g., Istat, 2010, Acciari et al., 2016, Guell et al., 2017) that provides evidence that inequality is high and social mobility is low in the Italian regions and prov-inces where organized crime is widespread such as those of Southern Italy. We complement this line of work in two respects. First, using a novel pan-el dataset at the regional level for the period 1985-2014 we investigate the relationship between inequality and organized crime at the regional level, exploiting both time and cross-sectional variation. Second, we assess the role of social mobility in organized crime. Our main finding is that higher inequality leads to highe…
Women’s Job Search Competence: A Question of Motivation, Behavior, or Gender
2018
We examined motivation and behaviors in women's active job search in Spain and the gender gap in this process. The current crisis in Spain and the increase in the number of unemployed people have revealed new inequalities that particularly affect women's employability, especially the most vulnerable women. This paper addresses two exploratory studies: the first study analyzes gender differences in the active job search using a sample of 236 Spanish participants; the second study explores the heterogeneity and diversity of unemployed women in a sample of 235 Spanish women. To analyze the active job search, the respondents were invited to write open-ended responses to questions about their jo…
Measuring the Change Towards More Sustainable Mobility:MUV Impact Evaluation Approach
2019
Urban areas can be considered the ground for the challenges related to the UN&rsquo
Ion mobility spectrometry evaluation of cocaine occupational exposure in forensic laboratories
2014
An approach, based on ion mobility spectrometry (IMS) has been developed for the control of cocaine in air of the breathing zone of operators, in laboratory surfaces and in nasal mucus of employees to evaluate cocaine exposure in a forensic laboratory. The analytical methodology has been validated in terms of accuracy, precision and limits of detection and results obtained were statistically comparable with those obtained by liquid chromatography. Cocaine concentration in laboratory air increases from 100 ± 35 ng m(-3) of a normal day to 10,000 ng m(-3) during the manipulation of cocaine seizures. The occupational exposure limit (OEL) for cocaine has not been established which difficult the…
Distinctive and comparative places: Alternative narratives of distinction within international student mobility
2017
Moving beyond the ‘world-class’ institutional model of international student mobility, this paper examines alternative narratives of distinction relating to place of study. Drawing on semi-structured interviews with international students at universities in the UK, Austria and Latvia, we illustrate how students inside and outside mainstream reputable higher education institutions narrate and reconfigure markers of distinction to validate their international mobility and location of study, in part to compete with peers at other (more prestigious) institutions. We demonstrate the importance of lifestyle and experiential places within a global differentiated higher education landscape and argu…