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81.
Cristiano Giuffrida Giovanni Abramo Ciriaco Andrea D’Angelo 《Journal of Informetrics》2019,13(2):500-514
Bibliometricians have long recurred to citation counts to measure the impact of publications on the advancement of science. However, since the earliest days of the field, some scholars have questioned whether all citations should be worth the same, and have gone on to weight them by a variety of factors. However sophisticated the operationalization of the measures, the methodologies used in weighting citations still present limits in their underlying assumptions. This work takes an alternative approach to resolving the underlying problem: the proposal is to value citations by the impact of the citing articles, regardless of the length of their reference list. As well as conceptualizing a new indicator of impact, the work illustrates its application to the 2004–2012 Italian scientific production indexed in the WoS. The proposed impact indicator is highly correlated to the traditional citation count, however the shifts observed between the two measures are frequent and the number of outliers not negligible. Moreover, the new indicator shows greater “sensitivity” when used to identify the highly-cited papers. 相似文献
82.
The objective of this study was to verify the structure of a model of how surface approach to studying is influenced by the trait variables of motivation and metacognition and the state variables of avoidance coping and evaluation anxiety. We extended the model to include: (1) the investigation of the relative contribution of the five metacognition sub-traits; and (2) the prediction of academic examination performance while controlling for past academic examination performance. A sample of 101 university students completed prior to undertaking academic examinations of the following self-report instruments: Work Preference Inventory, Metacognitions Questionnaire 30, Revised COPE Inventory, Evaluation Anxiety Scale and Approaches and Study Skills Inventory for Students. Results supported the original structure of the metacognitive-motivational model of surface approach to studying in addition to showing that it predicts academic examination performance controlling for past academic examination performance. The present study confirmed some previous findings, identified new predictive relationships and offered a comprehensive model of surface approach to studying and academic examination performance controlling for past academic examination performance. 相似文献
83.
This paper discusses the results for Italy of a CDM model (Crepon et al., 1998) further extended with the objective of evaluating drivers and productivity effects of environmental innovations. The particular nature of environmental innovations, especially as regards the need of government intervention to create market opportunities, is likely to affect the way through which they are pursued (innovation equation within the CDM model) and their effect on productivity (productivity equation). 相似文献
84.
Andrea Viggiano Sergio Chieffi Domenico Tafuri Giovanni Messina Marcellino Monda Bruno De Luca 《Journal of sports sciences》2013,31(1):46-62
Vividness and controllability of relaxing and energizing imagery by efficient and less efficient imagers. 相似文献
85.
Cristina Tringali Ilaria Brivio Beatrice Stucchi Ilaria Silvestri Raffaele Scurati Giovanni Michielon 《Journal of sports sciences》2013,31(14):1409-1415
AbstractHigh-level physical performance in rhythmic gymnastics is influenced by numerous skills and anthropometric factors. In order to understand if genetic predisposition could play a role to define the elite rhythmic gymnast phenotype, we analysed the frequency of common polymorphisms linked to genes correlated with body mass (ADRB2 and FTO), explosive strength (ACTN3 and ACE), and joint mobility (COL5A1), in 42 gymnasts involved in National and International events, and in 42 control girls. Our results demonstrated that high-level rhythmic gymnasts constituted a genetically selected population showing higher frequency of: (a) ADRB2 and FTO alleles linked to low body mass index and low fat mass; (b) COL5A1 CT genotype linked to high joint mobility and to the occurrence of genu recurvatum, but also to a higher incidence of injuries. ACTN3 and ACE polymorphisms did not appear to be connected with the phenotype of high-level rhythmic gymnast. Based on these data, it can be assumed that these polymorphisms could positively affect the phenotype and performance of gymnasts. 相似文献
86.
Miller Michelle D. Castillo Giovanni Medoff Norman Hardy Alexis 《Innovative Higher Education》2021,46(5):565-589
Innovative Higher Education - Rapid advances in the quality and accessibility of immersive virtual reality (IVR) have brought about intense interest in applications of the technology within higher... 相似文献
87.
Higher education systems in competitive environments generally present top universities, that are able to attract top scientists, top students and public and private financing, with notable socio-economic benefits in their region. The same does not hold true for non-competitive systems. In this study we will measure the dispersion of research performance within and between universities in the Italian university system, typically non-competitive. We will also investigate the level of correlation that occurs between performance in research and its dispersion in universities. The findings may represent a first benchmark for similar studies in other nations. Furthermore, they lead to policy indications, questioning the effectiveness of selective funding of universities based on national research assessment exercises. The field of observation is composed of all Italian universities active in the hard sciences. Research performance will be evaluated using a bibliometric approach, through publications indexed in the Web of Science between 2004 and 2008. 相似文献
88.
Over the past decade, national research evaluation exercises, traditionally conducted using the peer review method, have begun opening to bibliometric indicators. The citations received by a publication are assumed as proxy for its quality, but they require standardization prior to use in comparative evaluation of organizations or individual scientists: the citation data must be standardized, due to the varying citation behavior across research fields. The objective of this paper is to compare the effectiveness of the different methods of normalizing citations, in order to provide useful indications to research assessment practitioners. Simulating a typical national research assessment exercise, he analysis is conducted for all subject categories in the hard sciences and is based on the Thomson Reuters Science Citation Index-Expanded®. Comparisons show that the citations average is the most effective scaling parameter, when the average is based only on the publications actually cited. 相似文献