Multidimensional joint coupling: a case study visualisation approach to movement coordination and variability

Abstract

A case study visualisation approach to examining the coordination and variability of multiple interacting segments is presented using a whole-body gymnastic skill as the task example. One elite male gymnast performed 10 trials of 10 longswings whilst three-dimensional locations of joint centres were tracked using a motion analysis system. Segment angles were used to define coupling between the arms and trunk, trunk and thighs and thighs and shanks. Rectified continuous relative phase profiles for each interacting couple for 80 longswings were produced. Graphical representations of coordination couplings are presented that include the traditional single coupling, followed by the relational dynamics of two couplings and finally three couplings simultaneously plotted. This method highlights the power of visualisation of movement dynamics and identifies properties of the global interacting segmental couplings that a more formal analysis may not reveal. Visualisation precedes and informs the appropriate qualitative and quantitative analysis of the dynamics.     

Reported school experiences of young people living with sickle cell disorder in England

A survey of 569 young people with sickle cell disorder (SCD) in England has found such pupils miss considerable periods of time from school, typically in short periods of two or three days. One in eight has school absences equating to government‐defined ‘persistent absence’. Students with SCD report that they are not helped to catch up after these school absences. Half the children reported not being allowed to use the toilet when needed and not being allowed water in class; a third reported being made to take unsuitable exercise and being called lazy when tired. Children perceived both physical environment (temperature, school furniture) and social environment (being upset by teachers or other pupils) as triggers to episodes of their illness. Policy initiatives on school absences; preventive measures to ensure maintenance of good health; and measures to prevent perceived social attitudes precipitating ill health would also support children with other chronic illnesses at school.     

What makes teachers tick? Sustaining events in new teachers’ lives

To investigate what keeps teachers motivated on a day‐to‐day basis, we traced the importance of routinely encountered affective episodes. Significant research on emotions already highlights the relative importance of positive versus negative episodes, the importance of perceived origins of events and the need to differentiate between the frequency and affective intensity of episodes. Survey reports from 749 recently qualified primary teachers in Ireland strongly suggest the absence of positive experiences undermines commitment and efficacy rather than the occurrence of negative events. Furthermore, while remote structural factors may heavily influence teaching, it is the perception of events at micro‐level that impinge most strongly on motivation. Finally, the importance of particular experiences was, crucially, more related to their frequency than intensity. A major implication for teachers’ job satisfaction is the suggestion that while adverse episodes may be inevitably experienced, positive events (that occur independently of negative ones) fortify motivation and resilience.     

The research and publication programs of Radio Free Europe/Radio Liberty, Inc.

In 1973, the Board for International Broadcasting assumed responsibility for the operation of the joint corporate entity, Radio Free Europe/Radio Liberty, Inc. Broadcasting news, entertainment, and public affairs programs to Eastern Europe and the Soviet Union since 1950 and 1953 respectively, RFE/RL, Inc. has also maintained the largest research and analysis activity on these countries in the Free World. This information has been made widely available through serial and monographic publications, notably in the two weeklies Radio Free Europe Research (Eastern Europe) and Radio Liberty Research Bulletin (Soviet Union). Contract and independent researchers make use of rich archival and current affairs library research facilities in New York and Munich. As Federal funding has been maintained and expanded in recent years, facilities and capabilities have been greatly extended.     

New Orleans Early Intervention Study of Children with Visual Impairments

There is widespread agreement that early intervention for children with visual impairments and their families is important and beneficial. However, few con- trolled prospective studies of the effectiveness of various types of early intervention have been completed with these children. This randomized study evaluated the immediate and long-term effects of a comprehensive, weekly homebased intervention for infants and toddlers with visual impairments, compared with a low-intensity treatment through parent group meetings offered approximately 12 times per year. In annual assessments conducted for t h e years after the intervention was begun, there were negligible statistically significant or practical differences between groups based on a variety of measures of child and family functioning. In light of the cost-effectiveness analyses reported, questions are raised about the type of early intervention that should be provided to children with visual impairments.     

The field of speech, 1953: An overview

Inherent in the rhetorical tradition of symbolic form is the search for the rhetorical processes which convert experience into the social forms of community. Fusing Robert Scott's notion of rhetoric as dynamic with the rhetorical concept of “spectacle,” this essay explores “the dynamic spectacle” as a rhetorical document of community building. Black America's struggle for identity in White America is offered as a case study.     

TV's distorted vision of poverty

Avoiding almost entirely the depiction of poverty during prime‐time broadcasts, television networks present a sentimentalized vision of economic deprivation that omits or minimizes hardship while idealizing the supposed benefits of a spartan way of life. Much happier than the harried members of middle‐ and upper‐income groups, poor and working people on television seldom strive against their economic fates or against the system. Conclusions are based on a monitoring of prime‐time entertainment broadcast by the three commercial networks during “ratings month.”     

(Mis)Understanding Human Beings: Theory,Value, and Progress in Education Research

There is renewed interest in what can be called an experimentist approach to education research. The claim is that if researchers would focus on experiments and evidence-based policies and practices, irreversible progress in education can be achieved. This experimentist approach cannot provide the understanding of knowledge and human beings needed for meaningful progress in education. Lacking is adequate appreciation for the role of theory, particularly ethical and other philosophical theory. We especially need a theory of our human condition and a keen awareness for how some conceptions of scientific work can influence, and distort, our conceptions of human beings and worthwhile lives. As paradoxical as it might seem at first, to move ahead in education and our service to persons’ welfare, we need to look backward to revisit old truths.