Accuracy of human motion capture systems for sport applications; state-of-the-art review

Objective: Sport research often requires human motion capture of an athlete. It can, however, be labour-intensive and difficult to select the right system, while manufacturers report on specifications which are determined in set-ups that largely differ from sport research in terms of volume, environment and motion. The aim of this review is to assist researchers in the selection of a suitable motion capture system for their experimental set-up for sport applications. An open online platform is initiated, to support (sport)researchers in the selection of a system and to enable them to contribute and update the overview. Design: systematic review; Method: Electronic searches in Scopus, Web of Science and Google Scholar were performed, and the reference lists of the screened articles were scrutinised to determine human motion capture systems used in academically published studies on sport analysis. Results: An overview of 17 human motion capture systems is provided, reporting the general specifications given by the manufacturer (weight and size of the sensors, maximum capture volume, environmental feasibilities), and calibration specifications as determined in peer-reviewed studies. The accuracy of each system is plotted against the measurement range. Conclusion: The overview and chart can assist researchers in the selection of a suitable measurement system. To increase the robustness of the database and to keep up with technological developments, we encourage researchers to perform an accuracy test prior to their experiment and to add to the chart and the system overview (online, open access).     

Child and partner abuse: self-reported prevalence and attitudes in the north of Portugal

OBJECTIVES: To determine the self-reported prevalence of child and partner physical and emotional abuse in the north of Portugal and to investigate attitudes about these forms of family violence. METHODS: Data were collected by questionnaire from a representative sample of parents in two-parent families with children under the age of 18 years. A total of 2,391 parents participated (1,057 males), aged 20-67 years. Four questionnaires were used, one behavioral and one attitudinal, for each of the forms of abuse: child and partner. RESULTS: At least one act of emotional or physical abuse towards a child during the previous year was reported by 25.9% of participants (12.3% reported physically abusive and 22.4% emotionally abusive acts). Abuse of a partner was reported by 26.2% of participants; at least one act of physical abuse during the previous year was reported by 12% and of emotional abuse by 23.7%. The attitudinal data, however, showed general disapproval of the use of violence, both for disciplining children and within marital relationships. The degree of self-reported support for physical punishment was higher in participants who reported using abusive behavior. Females more commonly reported acts of child abuse, and males reported acts of partner abuse. Both forms of self-reported abuse showed an association with low educational and socio-economic status. CONCLUSIONS: This is the first study in Portugal to analyze family violence through self-report using a representative sample. The findings indicate that child and partner abuse constitute a significant problem in the region of northern Portugal. The discrepancy between the self-reported behavioral and attitudinal data may reflect conflicts in Portuguese society, which is undergoing substantial cultural changes.     

Career adaptability and associations with personality traits and pathological traits utilizing network analysis

This study investigated relationships between career adaptability and personality and pathological traits using the network analysis approach. We administered CAAS, BFI-2-S, and IDCP-2 to 630 working adults. We observed positive associations between personality and career adaptability and negative associations between pathological traits and career adaptability. This paper contributes to the understanding of the associations between career adaptability and Big Five personality traits and pathological traits. We found stronger associations between career adaptability and personality traits as compared to pathological traits. Our findings suggest that Neuroticism and Conscientiousness contribute more to adaptation to professional development tasks than do pathological traits.

     

Attracted but Unsatisfied: The Effects of Sensational Content on Television Consumption Choices

This article investigates experimentally the effects of sensational content on viewing choices and satisfaction in television consumption. The authors found that the presence of verbal violence in one program causes subjects to watch more of that program. However, subjects do not experience higher satisfaction with the program. In addition, they report lower satisfaction with the overall viewing experience. These findings are robust to the use of different program types for the experimental manipulation. Overall, the results pose a challenge to the use of audience figures as a measure of enjoyment or satisfaction.     

Rural Neighborhood Context,Child Care Quality,and Relationship to Early Language Development

Research Findings: Prior research with older urban children indicates that a disadvantaged neighborhood context is associated with poorer early development, including poorer verbal ability, reading recognition, and achievement scores among children. Neighborhood disadvantage in rural communities and at younger age levels may also be related to development; however, this relationship has received little examination. In this study we utilized data from the Family Life Project, a representative sample of babies born to mothers in poor rural counties in North Carolina and Pennsylvania, to address questions related to the relationship between neighborhood context (disadvantage and safety) and children's early language development. We examined the mediation of this relationship by child care quality. We also examined geographic isolation and collective socialization as moderators of the relationship between neighborhood context and child care quality. Results indicated that although neighborhood disadvantage did not predict children's development or child care quality, neighborhood safety predicted children's receptive language, with child care quality a partial mediator of this relationship. Collective socialization but not geographic isolation moderated the relationship between neighborhood safety and child care quality. Practice or Policy: Implications for policy, practice, and future research are discussed, including improving community safety through community policing, neighborhood watch, and social networks and increasing access to quality child care.     

When is less more? Investigating gap-filling in proofs without words activities

Educational Studies in Mathematics - Visuospatial representations of numbers and their relationships are widely used in mathematics education. These include drawn images, models constructed with...     

Higher education students in contemporary France

The number of students entering higher education started to increase significantly in the mid-1960s. This sharp growth has gone together with diversification in the social background of those attending, creation of new tracks (mainly in technology) and, more recently, a number of pedagogical innovations. Consequently, higher education students in the 1990s have little in common with those described by Pierre Bourdieu and Jean-Claude Passeron in Les héritiers, published in 1964: they are not just young bourgeois whose university career confirms ex-post the social position of his or her family. The relative democratization of access to higher education has allowed young people from other social classes to continue their studies after the baccalauréat. However, this democratization has also created new problems for higher education institutions. They must make financial, organizational and pedagogical adaptation to mass schooling. Higher education students also confront new problems in adapting to such demands of university work as autonomy and initiative. Students' living conditions have also changed: while remaining economically dependent on their parents, they enjoy, especially in the provinces, considerable freedom in the running of their personal lives.     

A single-display groupware collaborative language laboratory

Language learning tools have evolved to take into consideration new teaching models of collaboration and communication. While second language acquisition tasks have been taken online, the traditional language laboratory has remained unchanged. By continuing to follow its original configuration based on individual work, the language laboratory fails to take advantage of the potential provided by collaborative learning. We propose the use of a language laboratory based on single-display groupware (SDG) for learning vocabulary, grammar, pronunciation, and listening comprehension. By adopting SDG, the language laboratory benefits from the advantages of small group collaborative learning. In this paper, we first describe the design and pedagogical merit of the SDG collaborative language laboratory. We then share the results of a quasi-experimental pre–post comparison study, and use an observation guideline to analyze whether the conditions for collaborative learning have been fulfilled. Based on the results of this study, we conclude that developing pronunciation skills can be more effective when using a collaborative language laboratory versus an individual language laboratory. In addition to this, it can also be concluded that collaborative learning is most effective when accompanied by adequate instructional design.