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21.
The positive impact of intangible assets on several measures of economic performance is well documented in the literature. Less clear is what initially leads firms to invest in intangible assets. The latter is particularly important because, at least for the Italian manufacturing sector, firms exhibit strong heterogeneity in their investments in intangible assets. In line with the capability-based theory of the firm, we argue that the firm's propensity to invest in intangible assets can be explained by factors that are internal and specific to the firm. Making use of a rich dataset, we test and provide support for our hypotheses. In particular, we find that the propensity to invest in intangible assets increases with the firm's size, human capital, and historical intangible asset base. This points towards the existence of a cumulative process of intangible asset accumulation, which may account for most of the heterogeneity observed in the data. The paper adds to the previous literature in two ways: first, it highlights the existence of strong intra-industry heterogeneity in intangible asset investments, and second, it offers an explanation for such heterogeneity. 相似文献
22.
Gloria Bordogna Alessandro Campi Giuseppe Psaila Stefania Ronchi 《Information processing & management》2012
In this paper, we face the so called “ranked list problem” of Web searches, that occurs when users submit short requests to search engines. Generally, as a consequence of terms’ ambiguity and polysemy, users engage long cycles of query reformulation in an attempt to capture relevant information in the top ranked results. 相似文献
23.
Kendra M. Hall-Kenyon Alessandro A. Rosborough 《Early Years: An International Journal of Research and Development》2017,37(3):326-337
Early childhood advocates agree that positive teacher–child relationships are critical to classroom quality. Much research has emphasized quantifiable teacher characteristics and child outcomes without fully capturing the complexity of these relationships. Drawing on extensive classroom observations, two video-recorded free play sessions and teacher interviews, this study explored some of the ways that preschool teachers create and maintain positive relationships, with emphasis on how they care for the children: their ways of being with and for them. The results of this study provide practical examples for building and sustaining teacher–child relationships, help delineate the complexity of the relationships that exist in preschool classrooms and demonstrate the everyday ways in which those relationships are foundational for children’s learning and development. 相似文献
24.
Guido Veronese Alessandro Pepe Jamal Dagdukee Shaher Yaghi 《Teachers and Teaching》2018,24(8):951-964
Informed by a perspective centred on psychological health and well-being, the present research investigated whether teachers’ overall well-being was influenced by their affect balance, as well as the extent to which both affect and well-being are influenced by social capital, in conflict-ridden areas such as the occupied Palestinian Territories (Gaza Strip and West Bank). The study involved three cohorts of Palestinian teachers working in Israel, Gaza and the West Bank, respectively (N = 153). Dynamics of social exclusion, religious difference, educational disparity, poor educational standards and a lack of opportunity are factors affecting Palestinian teachers in both Israel and the occupied Palestinian territories. The results supported the hypothesis that emotional balance directly influences teachers’ well-being. Teachers with higher levels of positive affect reported greater personal well-being than those with higher levels of negative affect. Social capital also positively influenced teachers’ personal well-being, both directly, and indirectly by fostering positive emotions. These results suggest that availability of community resources plays a key role in promoting teachers’ well-being. 相似文献
25.
Alessandro Pepe Loredana Addimando 《European Journal of Psychology of Education - EJPE》2014,29(3):503-519
The present paper examines the influence of parent’s demographics (gender and educational level) and a contextual variable (school grade) on counterproductive parents’ behavior during interaction with teachers. Data were gathered by administering the Italian version of the Challenging Parent Standard Questionnaire (Pepe 2010) to a sample of in-service teachers of both elementary and middle schools (N?=?674). As a result, a sample composed of 150 fathers and 524 mothers showing counterproductive behaviors was obtained. General linear model multivariate analysis of covariance (MANCOVA) revealed no statistically significant differences between fathers’ and mothers’ counterproductive behaviors when controlled for the effects of parents’ education and the school grade. Low parental educational levels appeared to be associated with uncooperative and uninvolved behaviors, whereas excessively worried behaviors about a child’s education seems to be associated with a parent having a college degree or more. It must be remarked that parents’ behaviors can be conditioned by expectation about, or reaction to, the behavior of the teacher and the results should be interpreted by considering nonindependence of involved actors. Results are discussed in terms of theory development and parenting programs aimed at improving parent-teacher relationships. 相似文献
26.
Charles P. Hoffmann Alessandro Filippeschi Emanuele Ruffaldi Benoit G. Bardy 《Journal of sports sciences》2013,31(6):501-509
AbstractElite-standard rowers tend to use a fast-start strategy followed by an inverted parabolic-shaped speed profile in 2000-m races. This strategy is probably the best to manage energy resources during the race and maximise performance. This study investigated the use of virtual reality (VR) with novice rowers as a means to learn about energy management. Participants from an avatar group (n = 7) were instructed to track a virtual boat on a screen, whose speed was set individually to follow the appropriate to-be-learned speed profile. A control group (n = 8) followed an indoor training programme. In spite of similar physiological characteristics in the groups, the avatar group learned and maintained the required profile, resulting in an improved performance (i.e. a decrease in race duration), whereas the control group did not. These results suggest that VR is a means to learn an energy-related skill and improve performance. 相似文献
27.
Alessandro Lo Presti 《International Journal for Educational and Vocational Guidance》2009,9(2):125-134
Major global changes during the last decades have influenced the individual’s work-life and career. As a result of globalisation,
increasing societal complexity and flexibility, careers have lost their linearity and predictability. Traditional models of
career development no longer provide a comprehensive explanation for an adequate career development. New theoretical concepts
such as protean and boundaryless career attitudes are presented as options to cope with the new situation. In addition, the
development of career meta-competencies and skills are introduced as an approach to foster career self-management. 相似文献
28.
Alessandro Fornasiero Aldo Savoldelli Roberto Modena Gennaro Boccia Barbara Pellegrini Federico Schena 《Journal of sports sciences》2018,36(8):901-906
In the literature there is a lack of data about the development of top level athletes in cross-country mountain biking (XCO). The purpose of this study was to analyze anthropometric and physiological characteristics of some of the best XCO bikers aged between 13 and 16. The study involved 45 bikers (26 males and 19 females) belonging to a youth national team. The evaluations, consisting of anthropometric measures, incremental cycling tests (VO2max, PPO, P@RCP), and 30 s Wingate Tests (PMax, PMean), were conducted over a lapse of 4 years. Our findings showed in bikers, already at young age, a specific athletic profile advantageous for XCO performance. At the age of 16, just before entering the junior category and competing at international level, male and female bikers showed physiological values normalized to the body mass comparable to those reported in literature for high level athletes (VO2max>70 and >60 ml/kg/min, PPO >6.5 and >5.5 W/kg, respectively in males and females). The production of high power-to-weight ratios and high peaks of anaerobic power attests the presence of highly developed aerobic and anaerobic systems in young XCO cyclists reflecting the high physiological demand of this sport. 相似文献
29.
Alessandro N. Vargas Gisela Pujol Leonardo Acho 《Journal of The Franklin Institute》2017,354(1):332-344
The paper presents results for the second moment stability of continuous-time Markov jump systems with quadratic terms, aiming for engineering applications. Quadratic terms stem from physical constraints in applications, as in electronic circuits based on resistor (R), inductor (L), and capacitor (C). In the paper, an RLC circuit supplied a load driven by jumps produced by a Markov chain—the RLC circuit used sensors that measured the quadratic of electrical currents and voltages. Our result was then used to design a stabilizing controller for the RLC circuit with measurements based on that quadratic terms. The experimental data confirm the usefulness of our approach. 相似文献
30.
Twelve endurance athletes and six power athletes performed fatiguing isokinetic knee flexions/extensions. Isokinetic torque was recorded during the exercise. Isometric torque, cortisol and lactate responses, electromyographic (EMG) mean power frequency, average rectified value, and conduction velocity were analysed before and after the isokinetic exercise to determine correlations between electrophysiological variables and mechanical performances and/or blood concentrations of biomarkers in the two groups of athletes. The EMG variables were estimated from signals recorded from the vastus lateralis in both voluntary and electrically elicited isometric contractions. Power athletes recorded higher values than endurance athletes for the following variables: pre-exercise isometric maximal voluntary contraction (MVC), isokinetic MVC, rate of mechanical fatigue during isokinetic contractions, pre - post exercise variations and recovery times of conduction velocity and mean power frequency, and lactate concentrations. Moreover, conduction velocity overshooting was observed in endurance athletes during the recovery phase after exercise. The correlation analyses showed that the higher the rate of mechanical fatigue, the higher the lactate production and the reduction in conduction velocity due to the exercise. 相似文献