A multi-sensor system for automatic analysis of classical cross-country skiing techniques

Commercial systems utilizing data from inertial measurement units (IMUs) to analyse movement patterns have not yet been adapted to monitor daily training in cross-country (XC) skiing. The main purposes of this study are to investigate: (1) the feasibility and potential of a multi-sensor system consisting of a heart rate sensor, global navigation satellite systems (GNSSs) data and seven IMUs placed at multiple locations on the body for outdoor XC skiing, and (2) the validity of employing hard decision rules based on the correlation between arms and legs for detecting sub-techniques in classical XC skiing. All sensor data were synchronously sampled and synchronized with GNSS data from a commercially available sports watch while XC skiing on varying tracks, from amateur skiers and world-class athletes. An algorithm based on the correlation of the angular velocity of arms and legs was developed to detect the three main classic sub-techniques, diagonal, double poling with a kick and double poling. Other sub-techniques were classified as miscellaneous (0–20%). The system is shown to work well outdoors on snow during different conditions, and the implemented algorithm was validated by video analyses to detect the three sub-techniques with a sensitivity of 99–100%. This study is the first to detect and link sub-techniques in XC skiing to GNSS data, thereby associating the detection and distribution of sub-techniques to different terrains. Such information gives insight into the technical and tactical aspects of skiers’ daily training and competitions, thereby providing a tool for coaches and athletes.     

Relocating respect and tolerance: A practice approach in empirical philosophy

Respect and tolerance are key values in education. They are also among the aims of education and are brought to the foreground in educational policy. We argue that these values are neither philosophically nor politically given aims for which education is a means. Instead, respect and tolerance are enacted and negotiated through educational practices. We emphasize that respect and tolerance should be empirically and critically studied in educational practices. The discussion is based in two previous research projects and the material includes interviews with teachers and students and classroom observations. Moral philosophy is positioned as a conversation partner with the data material. We conclude that respect and tolerance are performed in different modes in practice. These two values cannot be understood as individual cognitive aspects but as multimodal processes and as aspects of collective, bodily and material practices. This article provides a contribution to the theorizing about educating for respect and tolerance.     

Who is an artist? Heterogeneity and professionalism among visual artists

The purpose of this article was twofold. Firstly, to investigate the heterogeneity among artists as an occupational category and secondly, to define arts as a profession and thereby to make a distinction between professional artists and amateurs. Artists' income and working conditions have been the subject of several studies, and many different sampling criteria have been used. Scholars have not yet achieved consensus on who should be included in the profession. In this article, we make an innovative contribution to this conversation. By applying a finite mixture model, which combines latent profile and latent class analysis, we have been able to identify different segments of artists in terms of professionalism. Each of these mutually exclusive classes is characterized by a particular income and working situation. We also include a membership function, estimated through a logistic regression, which allows prediction of the probability that an individual will belong to each class, given his/her socioeconomic characteristics. The subject of our study is Danish visual artists. The dataset consists of a combination of register data from Statistics Denmark and data collected from a questionnaire survey with 892 respondents. Based on the artists’ civil registration numbers, the two sources have been merged into a unique dataset. Our finite mixture model shows the heterogeneity among artists. Combined with a theoretically definition of arts as a profession, our research propose a distinction between professional artists and amateurs that cuts across categories used in prior literature. The results can be beneficial to cultural policy.

     

Artistic education matters: survival in the arts occupations

The literature of cultural economics generally finds that an artistic education has no significant impact on artists’ income and careers in the arts. In artists’ labor markets, indefinable features such as talent and artistic creativity apparently contribute more to success or higher rates of payment than education and training. In this article, we will readdress this question by looking at the artists’ survival in the arts occupations. We find it reasonable to expect than an artistic education can have a significant impact on artists’ careers because of the importance of technical skills, networks and signaling effects. We analyze the question by using a unique longitudinal dataset for five different groups of artists in Denmark, using the Cox model to apply survival functions and semi-parametric analysis. The results show, among other things, that an artistic education has a significant impact on artists’ careers in the arts, and we find important industry differences.     

Translating Knowledge into Action at the Norwegian University of Life Sciences (UMB)

Abstract

Purpose: This article explores the impacts of action learning on graduates’ abilities to use interdisciplinary knowledge to solve problems, practice teamwork on the job and become change agents through study in two MSc programmes at the Norwegian University of Life Sciences (UMB).

Design/methodology/approach: Electronic questionnaires were sent to students who had graduated from the Agroecology and Management of Natural Resources and Sustainable Agriculture (MNRSA) MSc programmes between 2000 and 2007.

Findings: Both study programmes encouraged students to become change agents promoting sustainable practices through application of knowledge and methods from natural and social sciences. Agroecology graduates applied a greater range of creative research methods, and improved their capacity for holistic and systems thinking more than MNRSA graduates, while the latter were more skilled in building consensus. Graduates from both programmes increased their abilities to create a positive team environment, bring people together to express their views and take multiple views into consideration when making decisions.

Practical implications: This survey documents how action learning develops students’ skills and knowledge to handle complex social and environmental challenges and become change agents.

Originality/value: In the context of increasing challenges in agroecology and natural resource management the findings on how to translate knowledge into action are important for teaching/learning institutions dealing with education for sustainable development.     

The effectiveness of a universal school-based programme on coping and mental health: a randomised,controlled study of Zippy’s Friends

The purpose of this study was to evaluate Zippy’s Friends, a universal school programme that aims at strengthening children’s coping skills. The sample consisted of 1483 children (aged 7–8?years) from 91 second-grade classes in 35 schools. The schools were matched and randomly assigned to intervention or control conditions. Coping was assessed by the Kidcope checklist for children and an adapted version for parents. Parents and teachers reported mental health outcomes using the Strengths and Difficulties Questionnaire. Controlling for the hierarchical structure of the data, latent variable regression analysis indicated that the programme had a significant positive effect on coping and on the impact of mental health difficulties in daily life. Subgroup analyses suggested that coping was improved in girls and children from the low socio-economic subgroup, whereas the impact of mental health difficulties was reduced in boys.     

Social Support and Socioeconomic Status Predict Secondary Students' Grades and Educational Plans Indifferently Across Immigrant Group and Gender

Social support and socioeconomic status (SES) have received considerable attention in explaining academic achievement and the achievement gap between students with ethic majority and immigrant background, and between boys and girls. Using a Structural Equation Modeling approach we examine (1) if there exist a gap in school achievements between these groups, (2) whether social support and SES is associated with achievements across these groups, (3) whether social support is associated with achievements after controlling for SES, and (4) whether achievement gaps are explained by group differences in social support and SES. Self-reported cross-sectional survey and register data from 8,574 10th graders in Norway was employed. Although we found group differences in achievements, and direct associations with social support and SES, we found no group differences in these associations. Controlling for SES and other sources of social support, teachers' support remained a significant positive influence on students' school outcomes.     

Associations of Early Developmental Milestones With Adult Intelligence

The study investigated whether age at attainment of 20 developmental milestones within the areas of language, walking, eating, dressing, social interaction, and toilet training was associated with adult intelligence. Mothers of 821 children of the Copenhagen Perinatal Cohort recorded 20 developmental milestones at a 3‐year examination, and all children were administered the Wechsler Adult Intelligence Scale when they were 20–34 years old. Later attainment of a number of milestones was associated with lower adult IQ with the strongest associations found for those related to language and social interaction. The adjusted full‐scale IQ means were 107.0, 101.8, and 100.6 for being able to form a sentence at less than 24 months, at 24 months, and later than 24 months.