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51.
Estefanía Estvez Lpez Juan Herrero Olaizola Beln Martínez Ferrer Gonzalo Musitu Ochoa 《Psychology in the schools》2006,43(3):387-400
The present study aimed to analyze differences between aggressive and nonaggressive rejected students in four sets of variables: personal, family, school, and social. Participants in the study were 843 Spanish adolescents ranging in age from 11 to 16 years old, of whom 47% were boys. Results indicated that these two subgroups of rejected students show a different profile. Aggressive rejected students informed of lower levels of family self‐esteem, less parental support, higher levels of aggression between their parents at home, and a more offensive parent–child communication in comparison with nonaggressive rejected adolescents. Moreover, aggressive rejected students showed lower levels of academic self‐esteem, a more negative attitude toward school and studies, poorer relationships with teachers, and more academic difficulties than did adolescents in the nonaggressive rejected subgroup. Finally, aggressive rejected students indicated the presence of more undesirable life events and changes in their lives and, in general, higher levels of perceived stress. © 2006 Wiley Periodicals, Inc. Psychol Schs 43: 387–400, 2006. 相似文献
52.
Douglas W. Oard Julio Gonzalo Mark Sanderson Fernando López-Ostenero Jianqiang Wang 《Information Retrieval》2004,7(1-2):205-228
The problem of finding documents written in a language that the searcher cannot read is perhaps the most challenging application of cross-language information retrieval technology. In interactive applications, that task involves at least two steps: (1) the machine locates promising documents in a collection that is larger than the searcher could scan, and (2) the searcher recognizes documents relevant to their intended use from among those nominated by the machine. This article presents the results of experiments designed to explore three techniques for supporting interactive relevance assessment: (1) full machine translation, (2) rapid term-by-term translation, and (3) focused phrase translation. Machine translation was found to better support this task than term-by-term translation, and focused phrase translation further improved recall without an adverse effect on precision. The article concludes with an assessment of the strengths and weaknesses of the evaluation framework used in this study and some remarks on implications of these results for future evaluation campaigns. 相似文献
53.
There is a wide set of evaluation metrics available to compare the quality of text clustering algorithms. In this article,
we define a few intuitive formal constraints on such metrics which shed light on which aspects of the quality of a clustering
are captured by different metric families. These formal constraints are validated in an experiment involving human assessments,
and compared with other constraints proposed in the literature. Our analysis of a wide range of metrics shows that only BCubed satisfies all formal constraints. We also extend the analysis to the problem of overlapping clustering, where items can simultaneously
belong to more than one cluster. As Bcubed cannot be directly applied to this task, we propose a modified version of Bcubed
that avoids the problems found with other metrics.
相似文献
| Felisa VerdejoEmail: |
54.
Fernando López-Ostenero Víctor Peinado Julio Gonzalo Felisa Verdejo 《Information processing & management》2008
Is Cross-Language answer finding harder than Monolingual answer finding for users? In this paper we provide initial quantitative and qualitative evidence to answer this question. 相似文献
55.
56.
Two conditioned suppression experiments with rats were conducted to determine whether the spontaneous recovery and renewal
that are commonly observed in retroactive outcome interference (e.g., extinction) also occur in retroactive cue interference.
Experiment 1 showed that a long delay between Phase 2 (the interfering phase) and testing produces a recovery from the cue interference
(i.e., the delay enhanced responding to the target cue trained in Phase 1), which is analogous to the spontaneous recovery
effect observed in extinction and other retroactive outcome interference procedures. Experiment 2 showed that, when target and interfering cues are trained in separate contexts and testing occurs in a different but familiar
context, a recovery from the cue interference is also observed (i.e., the context shift enhanced responding to the target),
which is analogous to ABC renewal from extinction. The results are discussed in terms of the possibility that similar associative
mechanisms underlie cue and outcome interference. 相似文献
57.
The context??s role in Pavlovian conditioning depends on the trial spacing during training, with massed trials revealing a function akin to that of discrete stimuli, and spaced trials revealing a modulatory function (Urcelay & Miller, Journal of Experimental Psychology. Animal Behavior Processes, 36, 268?C280, 2010). Here we examined the contextual determinants of a common but largely ignored effect: attenuated conditioned responding with extended reinforced training (i.e., a postpeak performance deficit [PPD]). Contextual sources of PPDs were investigated in four fear-conditioning experiments with rats. In Experiment 1, as the number of reinforced trials increased, conditioned responding decreased, even when testing occurred outside the training context. Experiment 2 revealed opposing influences of context on the PPD based on trial spacing, which interacted with whether testing occurred in the training context. This finding reconciles Experiment 1??s results with previous data (Bouton, Frohardt, Sunsay, Waddell, & Morris, Journal of Experimental Psychology. Animal Behavior Processes, 34, 223?C236, 2008). Experiment 3 suggested that extended training with these parameters did not lead to habituation to conditioned or unconditioned stimuli. In Experiment 4, few or many massed training trials were followed orthogonally by context extinction or no context extinction. After many pairings, context extinction reduced the PPD (i.e., enhanced responding), suggesting a competitive role of the context. These results, together with prior data suggesting that context modulates expressions of the PPD, are consistent with the view that contexts can play two distinctly different roles. 相似文献
58.
Lledó Gonzalo Lorenzo Lledó Asunción Gilabert-Cerdá Alba Lorenzo-Lledó Alejandro 《Education and Information Technologies》2022,27(4):4865-4885
Education and Information Technologies - In today's society, technology plays a fundamental role. More and more activities of daily life are being developed with the help of technology. One of... 相似文献