排序方式： 共有13条查询结果，搜索用时 15 毫秒
1.
Gordon Hull Heather Richter Lipford Celine Latulipe 《Ethics and Information Technology》2011,13(4):289-302
Social networking sites like Facebook are rapidly gaining in popularity. At the same time, they seem to present significant
privacy issues for their users. We analyze two of Facebooks’s more recent features, Applications and News Feed, from the perspective
enabled by Helen Nissenbaum’s treatment of privacy as “contextual integrity.” Offline, privacy is mediated by highly granular
social contexts. Online contexts, including social networking sites, lack much of this granularity. These contextual gaps
are at the root of many of the sites’ privacy issues. Applications, which nearly invisibly shares not just a users’, but a
user’s friends’ information with third parties, clearly violates standard norms of information flow. News Feed is a more complex
case, because it involves not just questions of privacy, but also of program interface and of the meaning of “friendship”
online. In both cases, many of the privacy issues on Facebook are primarily design issues, which could be ameliorated by an
interface that made the flows of information more transparent to users. 相似文献
2.
Leverrier C Gauthier A Nicolas A Molinaro C 《Research quarterly for exercise and sport》2011,82(3):458-465
The purpose of this study was to observe the effects of a submaximal isometric training program on estimation capacity at 25, 50, and 75% of maximal contraction in isometric action and at two angular velocities. The second purpose was to study the variability of isometric action. To achieve these purposes, participants carried out an isokinetic extension movement of the dominant lower limb during six test sessions and nine training sessions. Following the training program, estimation capacity in the different actions did not improve. However an improvement in performance was observed with a reduction in the variability of submaximal isometric actions. The proprioceptors activated in isometric action seemed to adapt to the training program itself which would promote better adaptation by a greater solicitation of internal feedback. 相似文献
3.
Educating English language learners (ELLs) presents a challenge for teachers and policy makers; the population of ELLs increases, yet their achievement trails that of their native English-speaking peers. In November 2002, Massachusetts voters supported a law that mandated Sheltered English Immersion (SEI) as the primary means of instruction for ELLs, effectively ending transitional bilingual education. This report examines key considerations in educating ELLs, and in implementing SEI in Massachusetts schools. It also presents case studies of three schools making significant strides with ELLs through innovative programming built around SEI methods yet maintaining important bilingual education practices that promote educational equity. Cross-case analysis identified themes about strategic data use, staff recruitment, and supports for students and families. 相似文献
4.
Jennifer L. Allen Amy Morris Celine Y. Chhoa 《Emotional and Behavioural Difficulties》2016,21(3):329-342
The aim of this study was to investigate the relationship between callous–unemotional (CU) traits and response to rewards and discipline in adolescent boys using a mixed-methods approach. Participants comprised 39 boys aged between 12 and 13 years and 8 teachers. Quantitative findings showed that CU traits were significantly related to punishment insensitivity, controlling for conduct problems, autism symptoms and hyperactivity. In contrast, there was no significant association between CU traits and reward sensitivity. Qualitative analysis indicated that teachers view children high in CU traits as responsive to fewer reward and discipline strategies, and strategies need to be implemented and monitored with care to avoid unintended, undesirable outcomes. However, time out, praise, support from other staff and maintaining a positive teacher–child relationship were identified as effective strategies. Findings emphasise the need to carefully select, modify and implement existing evidence-based classroom behaviour-management strategies with high-CU children. 相似文献
5.
Celine Triolet Nicolas Benguigui Cyrille Le Runigo A. Mark Williams 《Journal of sports sciences》2013,31(8):820-830
Abstract We quantify the nature and frequency of anticipation behaviours in professional tennis using video coding of incidents where the time delay between the opponent's stroke and the reaction of the player were recorded. We argue that anticipation is based on uncertain information and should lead in some situations to erroneous decisions. We identified the transition between reaction (with 100% accuracy in the selection of where the ball is played on the court) and anticipation (with less than 100% accuracy) as being 140–160 ms after ball contact. Anticipation behaviours occurred on between 6.14% and 13.42% of the coded situations. These anticipation behaviours appeared almost exclusively in ‘unfavourable’ situations, where the opponent had a significant tactical advantage, with the type of playing surface having only a limited effect. Moreover, the decrease in accuracy with shorter response times is not monotonic, with an increase in response accuracy being observed for times shorter than 120 ms before ball contact. We propose that very early anticipation behaviours occur when players use significant context-specific information before the opponent's stroke. When such information is not available, players produce anticipation behaviours that are closer to the moment of ball–racket contact using information that is more likely to be based on the opponent's preparation of the stroke. This study opens new directions for research focusing on the testing and training of anticipation in fast ball sports. 相似文献
6.
7.
This observational, cross-sectional study examined students’ retrospective recall of emotional distress when studying sensitive topics in psychology, and whether hardiness had a mediated pathway to emotional distress through a mental health condition (MHC). Psychology undergraduates (155 women, 34 men) from South Australian universities completed self-report questionnaires assessing hardiness, retrospective measures of emotional distress when studying a range of topics, their concurrent MHC and lifetime cumulative trauma. As hypothesised, students reported more emotional distress to sensitive topics relative to nonsensitive ones, p?r?=??.69). Hardiness was significantly negatively correlated with MHC, p?r?=??.38). Causal mediation analysis revealed, as predicted, that MHC mediated the effect of hardiness on emotional distress (p?相似文献
8.
Anh Nguyet Diep Chang Zhu Celine Cocquyt Maurice De Greef Tom Vanwing 《Studies in Continuing Education》2013,35(3):326-346
ABSTRACTOnline interaction has been associated with positive outcomes, academically and psychologically. Regarding the latter, social connectedness has been recognised as an important outcome on the basis of its link to subjective well-being and course satisfaction. In adult educational settings, how online interaction can foster social connectedness has not been widely examined. The study investigates how (1) adult learners’ online participation operationalised as discussion contribution, collaborative facilitation, and social interaction, and (2) their perceived online interaction quality are related to their feeling of social connectedness. The role of online interaction quality related to the three types of online participation and social connectedness is also examined. A questionnaire was developed to collect data from adult learner participants in Belgium (N?=?170). Multiple regressions and mediation analysis were conducted. The result shows that collaborative facilitation and online interaction quality significantly contribute to adult learners’ perceptions of social connectedness. Furthermore, the finding reveals that online interaction quality fully mediates the relationship between discussion contribution, social interaction, and social connectedness. Thus, the implications for research and instructional design are discussed. 相似文献
9.
Abstract reasoning refers to the ability to reason logically with premises that do not allow reference to knowledge about
the real world. This form of reasoning is complex and difficult, and at the same time, it is critical for understanding science
and mathematics. Two studies examined the use of analogy as a method to bridge reasoning with familiar content and abstract
reasoning among older adolescents. The results showed that the ability to make an appropriate analogy depends on reasoning
ability. Neither of the two procedures used resulted in an improvement in abstract reasoning. However, generating an inappropriate
analogy actually decreased abstract reasoning performance among students who showed greater initial levels of reasoning ability.
These results highlight the problems associated with using familiar reasoning as a basis for learning abstract reasoning skills. 相似文献
10.
Celine Leverrier Antoine Gauthier Arnaud Nicolas Corinne Molinaro 《Research quarterly for exercise and sport》2013,84(3):458-465
Abstract The purpose of this study was to observe the effects of a submaximal isometric training program on estimation capacity at 25, 50, and 75% of maximal contraction in isometric action and at two angular velocities. The second purpose was to study the variability of isometric action. To achieve these purposes, participants carried out an isokinetic extension movement of the dominant lower limb during six test sessions and nine training sessions. Following the training program, estimation capacity in the different actions did not improve. However, an improvement in performance was observed with a reduction in the variability of submaximal isometric actions. The proprioceptors activated in isometric action seemed to adapt to the training program itself, which would promote better adaptation by a greater solicitation of internal feedback. 相似文献