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941.
942.
Joaquín González-Cabrera Nicolás Sánchez-Álvarez Esther Calvete Ana León-Mejía Izaskun Orue Juan M. Machimbarrena 《Psychology in the schools》2020,57(1):78-90
This study created a Spanish triangulated version of the European Bullying Intervention Project Questionnaire and obtained indicators of its validity and reliability. This new tool allows researchers to triangulate and flexibly investigate the three main roles in school bullying, obtaining seven potential roles (pure victim, pure bully, pure bystander, bully/victim, victim/bystander, bully/bystander, and bully/victim/bystander). The sample was 2,068 adolescents and young adults aged 11–19 years (Mage = 14.2 ± 1.48 years old; 53.8% females). Confirmatory factor analysis indicated a good fit for the three-related-factor model and adequate reliability (ω > 0.91) in all dimensions. About 28.2% of the sample reported victimization; of whom only 2.9% were pure victims, 15.1% were victim/bystanders, and 9.8% were involved in all three roles (bully/victim/bystanders). Only 0.8% played the role of a pure bully, and 0.4% were bully/victims. The most prevalent profile was that of pure bystander (30%). These results are discussed in light of their importance for the interpretation of the prevalence of traditional bullying, and their implications for bullying assessments and interventions. 相似文献
943.
Electronic government procurement (eGP) is quickly becoming an essential piece of national e-government programs, since it enables active transparency and favors efficient vendor relationships; however, little attention has been paid to the need for periodical measurement of eGP portals' performance and goal satisfaction. Although maturity levels schemes have been proposed for other domains, most notably IT-related, to the best of our knowledge no maturity level model of eGP has been widely deployed yet. This article presents the e-Government Procurement Observatory Maturity Model (eGPO-MM), which focuses on both legal and institutional arrangements, and portals' technical aspects; the model consists of two Leverage Domains, seven Key Domain Areas, and 25 Critical Variables, which are valued with a weighted scoring system that produces quantitative indicators about portal capabilities and allows direct comparisons. The model was used to evaluate eGP portals from 14 countries in Latin America and the Caribbean; the measurements are presented, and fit well with previous rank perception, leading to a good reception by participant agencies. eGPO-MM has already allowed to identify areas for joint action and fostered knowledge-sharing among governments, including identification and dissemination of e-procurement best practices; it also established clear reference points to allow each agency to determine a roadmap to higher e-procurement maturity. 相似文献
944.
Ronald?T.?FernándezEmail author David?E.?Losada Leif?A.?Azzopardi 《Information Retrieval》2011,14(4):355-389
Employing effective methods of sentence retrieval is essential for many tasks in Information Retrieval, such as summarization,
novelty detection and question answering. The best performing sentence retrieval techniques attempt to perform matching directly
between the sentences and the query. However, in this paper, we posit that the local context of a sentence can provide crucial
additional evidence to further improve sentence retrieval. Using a Language Modeling Framework, we propose a novel reformulation
of the sentence retrieval problem that extends previous approaches so that the local context is seamlessly incorporated within
the retrieval models. In a series of comprehensive experiments, we show that localized smoothing and the prior importance
of a sentence can improve retrieval effectiveness. The proposed models significantly and substantially outperform the state
of the art and other competitive sentence retrieval baselines on recall-oriented measures, while remaining competitive on
precision-oriented measures. This research demonstrates that local context plays an important role in estimating the relevance
of a sentence, and that existing sentence retrieval language models can be extended to utilize this evidence effectively. 相似文献
945.
Ernesto R. Gantman Carlos J. Fernández Rodríguez 《Journal of Business & Finance Librarianship》2017,22(1):7-23
In this article, the authors analyze the characteristics of the vernacular management literature in Spanish-speaking countries and examine what factors can explain the differences observed in the production of these countries. The results indicate that management research has gained ground in the last decade, as revealed by the apparition of new journals and the number of articles published. The article also shows that Spain has a different profile of published articles than that of the other countries, as its production is mostly composed of empirical-quantitative articles. Finally, a negative binomial regression model suggests that the countries' scientific output is positively associated with their level of economic development and the size of their economies. 相似文献
946.
David Fernández-Quijada 《Journal of Radio & Audio Media》2017,24(1):77-89
This article examines the distinctiveness of the public broadcaster offer in the roll-out of digital terrestrial radio across 25 European markets. Distinctiveness was measured through the number of services and the diversity of genres provided by the same broadcaster on analogue-only, simulcast and digital-only stations. The results illustrate which public broadcasters have made an effort to provide exclusive digital services and which genres are being preferred in digital. As a whole, the research provides useful insights into the role of public media as drivers of digital radio and technological innovation. 相似文献
947.
Tiago Julio Costa Pereira Fábio Yuzo Nakamura Mayra Tardelli de Jesus Claudio Luís Roveri Vieira Milton Shoiti Misuta Ricardo Machado Leite de Barros 《Journal of sports sciences》2017,35(4):361-368
The purpose of this study was to analyse the physical and technical performances of professional tennis players during official matches. The trajectories of eight players were obtained during matches, using an automatic tracking method. The distances covered and technical performances were analysed for the first and second sets. The athletes covered (mean ± standard deviation) a total of 1702.4 ± 448.2 m in the first set, 1457.6 ± 678.1 m in the second set and 3160.0 ± 880.1 in the entire match. No differences were found between the sets for the physical variables (lateral and forward displacements, distance covered per rally, per game and per set, and the percentage of time spent in each range of velocity). However, the distances covered by the athletes during the rallies in which they were serving (median = 5.2; interquartile range (IQR) = 6.7 m) were statistically smaller than when they were returning (median = 6.2; IQR = 7.7 m). Forehand ground stroke proficiency decreased from the first (mean ± standard deviation: 75.2 ± 4.11%) to the second set (mean ± standard deviation = 65.5 ± 14.3%). In conclusion, tennis players did not present reduced physical performance from the first to the second set. 相似文献
948.
Vicente Javier Clemente-Suárez José Juan Robles-Pérez Jesús Fernández-Lucas 《Journal of sports sciences》2017,35(19):1872-1878
Parachute jump is an extreme activity that elicits an intense stress response that affects jumpers’ body systems being able to put them at risk. The present research analysed modifications in blood oxygen saturation (BOS), heart rate (HR), cortisol, glucose, lactate, creatine kinase (CK), muscles strength, cortical arousal, autonomic modulation, pistol magazine reload time (PMRT) and state anxiety before and after an automatic open parachute jump in 38 male Spanish soldiers (25.6 ± 5.9 years). A MANOVA with samples as a fixed factor and Effect Size (ES) were conducted. MANOVA showed (Wilks lambda = .225; F = 5.980; P = .000) a significantly increase in cortisol (6.2 ± 3.2 vs. 8.2 ± 4.3 nmol/l; P = .025; ES = .47), HR (75.0 ± 14.6 vs. 87.4 ± 17.3 bpm; P = .004; ES = .72), lactate (1.8 ± 1.2 vs. 4.4 ± 2.2 mmol · l?1; P = .002; ES = 1.18), sympathetic nervous system and leg strength manifestation after the parachute jump. By contrary BOS, PMRT (55.6 ± 27.6 vs. 48.0 ± 16.7 s; P = .021; ES = .46) and somatic anxiety (SA), evaluated by CSAI2R questionnaire, decreased. An automatic parachute jump increased physiological and cortical response and decreased SA of participants. This stress response can affect the jumpers’ abilities and allow us to have a better understanding of the organism stress response and to improve training for both military and sport parachute jumps. 相似文献
949.
This research focuses on the origins of football in Spain and seeks to show how and where it was introduced in the country, to comprehend the historical context, and to understand why it took roots so rapidly despite the rivalry with the well-established tradition of bullfighting. The period of study spans from 1868 (first news piece on football in Spain) to 1903 (celebration of the first football championship in the country). The methodology focused primarily on identifying the primary sources and selecting the secondary sources, followed by the interpretative analysis and the mapping of football associations created in Spain in the sport’s early days. The large urban cities led the process of creating football clubs from 1889: Barcelona (61), Madrid (15), and Bilbao (9) steered the process of legitimization and institutionalization of football in the country. In the last 11 years of the nineteenth century (1889–1899), 29 clubs were created in 12 different cities. In the first four years of the twentieth century (1900–1903), a further 103 clubs mushroomed all over the country. Thus a total of 132 clubs were founded between 1889 and 1903 in Spain, which laid the necessary foundations for the implantation and legitimization of football. 相似文献
950.
Miguel Peralta João Martins Francisco Gómez Chávez Paola Cortés Almanzar Adilson Marques 《European Journal of Sport Science》2018,18(7):1038-1044
Background: Physical activity and self-rated wellbeing have important benefits to health. However, scientific knowledge regarding their relationship among older adults is scarce. Thus, the aim of this study was to examine the associations between physical activity frequency and several dimensions of self-rated wellbeing, in a representative sample of European older adults from 28 countries. Methods: This study is based on the European Social Survey round 6, 2012. It had a total sample size of 12,341 older adults (5100 men, 7241 women) with mean age 73.8?±?6.6 years. Information was collected through a questionnaire, filled-in during an hour-long face-to-face interview. Physical activity was accessed using the question “On how many of the last 7 days you were physically active continuously for 20 minutes or longer?” and six dimensions of self-rated wellbeing were used. Results: Physical activity in the last 7 days was linearly related with all dimension of the self-rated wellbeing and with wellbeing total score for both sexes (men, β?=?0.09, 95% CI: 0.07 to 0.10, p?.001; women, β?=?0.10, 95% CI: 0.09 to 0.11, p?.001). Conclusions: Physical activity promotion should be stressed as a meaningful strategy to improve people's wellbeing overall. This strategy has special importance when considering the older adult population. 相似文献