Dimensions of Market Demand Associated with Taekwondo Schools in North America: Development of a Scale

Since the introduction of martial arts in the United States, the sport of Taekwondo (TKD) has rapidly grown and developed. Although the elevated interest in this sport has increased the magnitude of the TKD market, no systematic studies have been conducted to investigate the market demand variables associated with TKD schools in North America. To a great extent, lack of study has been due to the unavailability of a viable measure. The purpose of this study was to identify the dimensions of market demand for TKD schools and develop the Scale of Market Demand Associated with Taekwondo School (SMD-TKD). Research participants (N = 205) were TKD school members who were 18 years and older from 22 TKD schools in major cities of Florida. A factor analysis using principal component extraction and varimax rotation produced six factors with 51 items returned (i.e., Personal Benefits, School Operation, Instruction Quality, Program Offering, Locker Room, and Cultural Learning). Multiples regression analysis revealed that all market demand factors, except for Program Offering and Cultural Learning, were positively (p < .05) predictive of TKD consumption, suggesting that the SMD-TKD is useful for marketing studies on TKD consumers.     

Effects of 8-week endurance and resistance training programmes on cardiovascular stress responses,life stress and coping

ABSTRACT

This study tested the effect of 8-week endurance and resistance training programmes on cardiovascular stress responses, life stress, and coping. Fifty-two untrained but healthy female students were randomised to an 8-week endurance training, an 8-week resistance training, or a wait list control group. Before and after the training intervention, we assessed the groups’ cardiorespiratory fitness (VO2max test), self-reported life stress, coping strategies and cardiovascular reactivity to and recovery from a standardised laboratory stressor. Both endurance and resistance training programmes caused physiological adaptation in terms of increased VO2max after the intervention. For stress and coping parameters, participants in the training groups improved cardiovascular recovery from stress and reported having less stress in their everyday life after the intervention than participants in the control group, while the two training groups did not differ from each other. We did not find any significant differences in heart rate reactivity and coping strategies between the study groups. These results partly support that exercise training has stress-reducing benefits regardless of the type of exercise. Both endurance and resistance exercise activities may be effectively used to improve stress regulation competence while having less impact on changing specific coping strategies.     

Measurement of fluid flow generated by artificial cilia

We observed and measured the fluid flow that was generated by an artificial cilium. The cilium was composed of superparamagnetic microspheres, in which magnetic dipole moments were induced by an external magnetic field. The interaction between the dipole moments resulted in formation of long chains-cilia, and the same external magnetic field was also used to drive the cilia in a periodic manner. Asymmetric periodic motion of the cilium resulted in generation of fluid flow and net pumping of the surrounding fluid. The flow and pumping performance were closely monitored by introducing small fluorescent tracer particles into the system. By detecting their motion, the fluid flow around an individual cilium was mapped and the flow velocities measured. We confirm that symmetric periodic beating of one cilium results in vortical motion only, whereas asymmetry is required for additional translational motion. We determine the effect of asymmetry on the pumping performance of a cilium, verify the theoretically predicted optimal pumping conditions, and determine the fluid behaviour around a linear array of three neighbouring cilia. In this case, the contributions of neighbouring cilia enhance the maximal flow velocity compared with a single cilium and contribute to a more uniform translational flow above the surface.     

Delay-dependent stability criteria for systems with asymmetric bounds on delay derivative

This paper discretizes the states, a method introduced in [18] for constant delayed systems, not only in constructing the Lyapunov-Krasovskii (L-K) functional but also in designing the integral inequality technique [17] and [19] for time-varying delayed systems, which increase the order of uncorrelated augmentation [5], [21] and [22]. Based on the discretized state, [10] and [27]'s piecewise analysis method is applied to confirm the system stability in whole delay bound. Asymmetric variation of the delay derivative is assumed so that direct extension to all constraints of the delay derivative can be achieved. Examples show the resulting criteria improve the allowable delay bounds over all existing ones in the literature.     

Science, the public, and social elites: how the general public, scientists, top politicians and managers perceive science

This paper finds that the Croatian public's and the social elites' perceptions of science are a mixture of scientific and technological optimism, of the tendency to absolve science of social responsibility, of skepticism about the social effects of science, and of cognitive optimism and skepticism. However, perceptions differ significantly according to the different social roles and the wider value system of the observed groups. The survey data show some key similarities, as well as certain specificities in the configuration of the types of views of the four groups--the public, scientists, politicians and managers. The results suggest that the well-known typology of the four cultures reveals some of the ideologies of the key actors of scientific and technological policy. The greatest social, primarily educational and socio-spatial, differentiation of the perceptions of science was found in the general public.     

Why Do Some Young Adults not Graduate From Upper-Secondary School? On the Importance of Signals of Labour Market Failure

In high-income countries, not completing secondary school often entails a high risk of social exclusion. Using data on young adults born in 1985 who grew up in metropolitan Sweden, we study factors associated with not graduating from upper-secondary school at age 21. Our hypothesis is that if a young person sees examples of people who are not able to earn a living despite having a long education, such negative examples are influential. Results from estimated logistic models are consistent with the hypothesis.     

Exploring the eye‐movement patterns as Chinese children read texts: a developmental perspective

This study was to investigate Chinese children's eye patterns while reading different text genres from a developmental perspective. Eye movements were recorded while children in the second through sixth grades read two expository texts and two narrative texts. Across passages, overall word frequency was not significantly different between the two genres. Results showed that all children had longer fixation durations for low‐frequency words. They also had longer fixation durations on content words. These results indicate that children adopted a word‐based processing strategy like skilled readers do. However, only older children's rereading times were affected by genre. Overall, eye‐movement patterns of older children reported in this study are in accordance with those of skilled Chinese readers, but younger children are more likely to be responsive to word characteristics than text level when reading a Chinese text.