The governmentality of childhood obesity: Coca-Cola,public health and primary schools

In this paper, we examine the emergence of what might seem an unexpected policy outcome – a large multinational corporation, frequently blamed for exacerbating childhood obesity, operating as an officially sanctioned driver of anti-obesity initiatives in primary schools across the globe. We draw on Foucault's notion of governmentality to examine the pedagogical work of two international programmes devised and funded by Coca-Cola. We demonstrate how these programmes work simultaneously as marketing campaigns and as governmental strategies to position children as responsible for their own health, conflate (ill)health with body weight and strategically employ the concept of energy balance. We argue that these programmes not only act to unite the interests of corporations, governments and schools, but also seek to use schools to reshape the very ideas of health and a ‘healthy life’. We conclude by considering two sets of ethical and political issues that come sharply as corporations like Coca-Cola continue to exploit the policy space created by the ‘obesity epidemic’.     

High-gain observer with sliding mode for nonlinear state estimation and fault reconstruction

This paper develops a high gain observer with multiple sliding modes for simultaneous state and fault estimations for MIMO nonlinear systems. The novelty lies in the observer design that employs the combination of high-gain observer and sliding mode observer. The proposed observer does not impose the small-Lipschitz-constant condition on the system nonlinearity. By imposing a structural assumption on the nonlinear fault distribution matrix, the observability of the faults/unknown inputs w.r.t. the outputs is safeguarded and sliding modes are utilized for their reconstruction. The reconstruction of the faults from the sliding mode only relies on the output estimation error and thus can be implemented online together with the state estimation. Finally, an application to flexible joint robotic arm is used to illustrate the proposed method.     

The effect of playing formation on high-intensity running and technical profiles in English FA Premier League soccer matches

The aim of this study was to examine the effect of playing formation on high-intensity running and technical performance during elite soccer matches. Twenty English FA Premier League games were analysed using a multiple-camera computerized tracking system (n = 153 players). Overall ball possession did not differ (P < 0.05) between 4-4-2, 4-3-3 and 4-5-1 formations (50%, s = 7 vs. 49%, s = 8 vs. 44%, s = 6). No differences were observed in high-intensity running between 4-4-2, 4-3-3 and 4-5-1 formations. Compared with 4-4-2 and 4-3-3 formations, players in a 4-5-1 formation performed less very high-intensity running when their team was in possession (312 m, s = 196 vs. 433 m, s = 261 vs. 410 m, s = 270; P 5 0.05) but more when their team was not in possession (547 m, s = 217 vs. 461 m, s = 156 vs. 459 m, s = 169; P < 0.05). Attackers in a 4-3-3 performed ~30% more (P < 0.05) high-intensity running than attackers in 4-4-2 and 4-5-1 formations. However, the fraction of successful passes was highest in a 4-4-2 (P < 0.05) compared with 4-3-3 and 4-5-1 formations. The results suggest that playing formation does not influence the overall activity profiles of players, except for attackers, but impacts on very high-intensity running activity with and without ball possession and some technical elements of performance.     

Validity of a portable force platform for assessing biomechanical parameters in three different tasks

The aim of this study was to determine the precision and accuracy of the vertical and anterior–posterior force components of the portable PASCO PS-2142 force plate. Impulse, peak force, and time to peak force were assessed and compared to a gold standard force plate in three different tasks: vertical jump, forward jump, and sprint start. Two healthy male participants performed ten trials for each task, resulting in 60 trials. Data analyses revealed good precision and accuracy for the vertical component of the portable force plate, with relative bias and root mean square (RMS) error values nearly the same in all tasks for the impulse, time to peak force, and peak force parameters. Precision and accuracy of the anterior–posterior component were lower for the impulse and time to peak force, with relative bias and RMS error values nearly the same between tasks. Despite the lower precision and accuracy of the anterior–posterior component of the portable force plate, these errors were systematic, reflecting a good repeatability of the measure. In addition, all variables presented good agreement between the portable and gold standard platforms. Our results provide a good perspective for using the aforementioned portable force plate in sports and clinical biomechanics.     

Understanding teacher entrepreneurial behavior in schools: Conceptualization and empirical investigation

Journal of Educational Change - The quasi-market condition of education intensified the need to seek ongoing school improvements, manage uncertainty, and innovate school-wide pedagogy and...     

Networks of innovators: a longitudinal perspective

This paper investigates how evolutions of complex technologies and networks of innovators affect the development of emerging innovations. Building upon the theories of technological evolution and socio-organizational dynamics, we develop propositions to examine the stability and change of networks punctuated by successive technological changes. We argue that incumbents who are early advocates of standards in complex technological environments are more likely to survive via alliances. Based on 150 firms and 319 alliances in the US data communications industry from 1985 to 1996, we found support for our propositions and the characteristics of central-periphery structure best describe the patterns of industry networks.     

Attitude Towards Responsibility and Teacher Locus of Control: Further Evidence of Their Validities

In recent years, a growing number of studies have shown that teachers' sense of efficacy is a powerful predictor of teacher effectiveness. The construct of teacher locus of control or perceived teacher efficacy is defined as the teachers' beliefs or conviction that they can influence how well students learn and how they behave (Guskey, 1981; Rose & Medway, 1981; Taylor et al., 1981). It has also been found that teachers who place a high value on teaching tend to take greater personal responsibility for their own actions and their students' performance (Ames, 1982; Brookover & Lezotte, 1979). The concept of personal responsibility for student performance and behaviour may be extended to include responsibility for other aspects of school work and to attitude towards responsibility in general within the school context.     

Accelerated HE digitalisation: Exploring staff and student experiences of the COVID-19 rapid online-learning transfer

Education and Information Technologies - In the UK, the first ‘lockdown’ of the COVID-19 pandemic necessitated a rapid shift to online learning and digital technologies in Higher...     

A theory of action account of an across-school collaboration policy in practice

Journal of Educational Change - Educational systems worldwide promote the use of collaborative networks to foster teacher learning and improve practice in the pursuit of educational change to...