Effects of forefoot bending stiffness of badminton shoes on agility,comfort perception and lower leg kinematics during typical badminton movements

This study investigated whether an increase in the forefoot bending stiffness of a badminton shoe would positively affect agility, comfort and biomechanical variables during badminton-specific movements. Three shoe conditions with identical shoe upper and sole designs with different bending stiffness (Flexible, Regular and Stiff) were used. Elite male badminton players completed an agility test on a standard badminton court involving consecutive lunges in six directions, a comfort test performed by a pair of participants conducting a game-like practice trial and a biomechanics test involving a random assignment of consecutive right forward lunges. No significant differences were found in agility time and biomechanical variables among the three shoes. The players wearing the shoe with a flexible forefoot outsole demonstrated a decreased perception of comfort in the forefoot cushion compared to regular and stiffer conditions during the comfort test (p < 0.05). The results suggested that the modification of forefoot bending stiffness would influence individual perception of comfort but would not influence performance and lower extremity kinematics during the tested badminton-specific tasks. It was concluded that an optimisation of forefoot structure and materials in badminton shoes should consider the individual’s perception to maximise footwear comfort in performance.     

Secondary School Art Teachers' Concepts of Teaching in Hong Kong

Recently, there has been considerable concern among art educators and cultural policy makers to promote art education in Hong Kong. The launch of the new curriculum of a discipline-based character in 1996 generated debate in the art education circle of Hong Kong. There were diverse opinions on the rationale for teaching art. Concern was expressed about the present constraints of art teaching related to teachers' ability and school administration poses another important issue that seems to inhibit further developments. This paper reports part of the findings of a study on art teachers' concepts of teaching. It explores the concepts of about 20 secondary art teachers in Hong Kong. Several categories of teaching are derived from interviews: aesthetic development, moral development, intellectual development, expression and therapy, and intellectual and aesthetic development. A scheme is developed which can be used to analyze teachers' concepts as education in or through art on a continuum from subject to learner centred.     

Implementation of School-Based Management: A Multi-Perspective Analysis of the Case of Hong Kong

The implementation of school-based management reform is a complicated process involving changes not only in structures and political relations but also in social interactions and cultural elements at both school and system levels. The lack of multi-perspectives in the analysis of school reforms sets a tight limitation on the understanding and implementation of school-based management. This paper aims to apply the structural perspective, the human resource perspective, the political perspective, and the cultural perspective to review and analyse the case of Hong Kong in implementing school-based management. It is hoped that the analysis of the Hong Kong case can provide an useful illustration of the application of multi-perspectives to support development of school-based management and draw useful implications for school reforms in both local and international contexts.     

Locating Self in the World: Elementary school children in Japan,Macau and Hong Kong

In the so-called 'global age', the issue of how children learn to locate themselves in the world is an important one. Working from a foundation of theories related to globalisation, identity development and citizenship education, this paper describes the findings of a research project which explored elementary school children's geographical and affective location of the self in Japan, Macau and Hong Kong. Analysis and discussion of Japanese education policy is then presented in an attempt to explain the finding that Japanese children are far less likely than their counterparts in Hong Kong and Macau to locate themselves in an international sphere.     

The Characteristics of Hong Kong School Principals' Leadership: The Influence of Societal Culture

This paper aims to identify the characteristics of principal leadership in Hong Kong. More specifically, it analyzes and integrates a number of studies to identify the consistency of principal leadership across the years and samples using a number of different leadership conceptions. These conceptions include both traditional and alternate approaches to educational leadership. The paper shows how societal culture and context combine with the principals' personal attributes to shape their school leadership. Findings indicate considerable diversity among Hong Kong principals even though they operate within the same social system. The paper stresses the importance of understanding culture and context if worthwhile leadership development programmes are to be developed.     

Dielectrophoretic manipulation of particles in a modified microfluidic H filter with multi-insulating blocks

The conventional microfluidic H filter is modified with multi-insulating blocks to achieve a flow-through manipulation and separation of microparticles. The device transports particles by exploiting electro-osmosis and electrophoresis, and manipulates particles by utilizing dielectrophoresis (DEP). Polydimethylsiloxane (PDMS) blocks fabricated in the main channel of the PDMS H filter induce a nonuniform electric field, which exerts a negative DEP force on the particles. The use of multi-insulating blocks not only enhances the DEP force generated, but it also increases the controllability of the motion of the particles, facilitating their manipulation and separation. Experiments were conducted to demonstrate the controlled flow direction of particles by adjusting the applied voltages and the separation of particles by size under two different input conditions, namely (i) a dc electric field mode and (ii) a combined ac and dc field mode. Numerical simulations elucidate the electrokinetic and hydrodynamic forces acting on a particle, with theoretically predicted particle trajectories in good agreement with those observed experimentally. In addition, the flow field was obtained experimentally with fluorescent tracer particles using the microparticle image velocimetry (μ-PIV) technique.     

Improvement of rectification effects in diffuser/nozzle structures with viscoelastic fluids

This paper reports the improvement of rectification effects in diffuser∕nozzle structures with viscoelastic fluids. Since rectification in a diffuser∕nozzle structure with Newtonian fluids is caused by inertial effects, micropumps based on this concept require a relatively high Reynolds numbers and high pumping frequencies. In applications with relatively low Reynolds numbers, anisotropic behavior can be achieved with viscoelastic effects. In our investigations, a solution of dilute polyethylene oxide was used as the viscoelastic fluid. A microfluidic device was fabricated in silicon using deep reactive ion etching. The microfluidic device consists of access ports for pressure measurement, and a series of ten diffuser∕nozzle structures. Measurements were carried out for diffuser∕nozzle structures with opening angles ranging from 15° to 60°. Flow visualization, pressure drop and diodicity of de-ionized water and the viscoelastic fluid were compared and discussed. The improvement of diodicity promises a simple pumping concept at low Reynolds numbers for lab-on-a-chip applications.     

An exploratory study on collaborative modes of professional development and learning for teachers of students with autism spectrum disorder (ASD)

This study aims to deliver a school‐based mode of training for in‐service teachers of students with ASD in Hong Kong. The training is delivered following the phases of implementation science, namely, exploration, installation, and implementation. The project team used the theory of mind approach, which enables teachers to engage with students with ASD and to focus on recognizing and reacting to emotions. Participants in this study included four educators from a teacher education institution, three expert teachers, and 19 in‐service teacher trainees. The most salient responses came from trainees who were provided with the opportunity to apply learned skills in their own classrooms immediately and to share the knowledge and skills in dealing with students with ASD in the post‐conference meetings.