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Graham Butt Ann Lance Antony Fielding Helen Gunter Steve Rayner Hywel Thomas 《School Leadership & Management》2013,33(5):455-471
Government policy assumes that modernization and remodelling will be effective as external intervention mechanisms to improve job satisfaction. Based on data collected as part of the evaluation of the ‘Transforming the School Workforce Pathfinder Project’, an argument is presented here which suggests that internal management models may be more effective in improving teacher job satisfaction. By comparing the responses of teachers within primary and special schools with those from secondary schools, internal factors are identified which may be more relevant than externally imposed measures. 相似文献
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Hywel Thomas 《School Leadership & Management》2013,33(2):177-183
At the end of a decade of enhanced marketisation in schools, this article considers the subjective meanings attached to educational marketing by school teachers and the ways they construct and interpret teachers' 'idealised' and 'actual' involvement and contribution to school marketing. Through semi-structured interviews with 12 secondary school teachers from the south of England, the study revealed teachers' perceptions of and attitudes towards competition, marketing and education, their awareness of the marketing activities of their schools, the teachers' role in marketing the school and the perceived impact of the market upon teachers' well being. The results show that there is no coherent, organised view of education marketing among teachers in the study but rather that there are a number of inchoate voices amongst teachers concerning their role in school marketing. Broadly, two voices are revealed that reflect a cognitive dissonance which may exist among school teachers in the era of marketisation. This dissonance may stem from teachers' ideology-based difficulty in perceiving marketing as part of school life, while at the same time, they are aware of its importance to the school's success. 相似文献
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The dielectric properties of tumour cells are known to differ from normal blood cells, and this difference can be exploited for label-free separation of cells. Conventional measurement techniques are slow and cannot identify rare circulating tumour cells (CTCs) in a realistic timeframe. We use high throughput single cell microfluidic impedance cytometry to measure the dielectric properties of the MCF7 tumour cell line (representative of CTCs), both as pure populations and mixed with whole blood. The data show that the MCF7 cells have a large membrane capacitance and size, enabling clear discrimination from all other leukocytes. Impedance analysis is used to follow changes in cell viability when cells are kept in suspension, a process which can be understood from modelling time-dependent changes in the dielectric properties (predominantly membrane conductivity) of the cells. Impedance cytometry is used to enumerate low numbers of MCF7 cells spiked into whole blood. Chemical lysis is commonly used to remove the abundant erythrocytes, and it is shown that this process does not alter the MCF7 cell count or change their dielectric properties. Combining impedance cytometry with magnetic bead based antibody enrichment enables MCF7 cells to be detected down to 100 MCF7 cells in 1 ml whole blood, a log 3.5 enrichment and a mean recovery of 92%. Microfluidic impedance cytometry could be easily integrated within complex cell separation systems for identification and enumeration of specific cell types, providing a fast in-line single cell characterisation method. 相似文献
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In their recent contribution to JPS, Gleaves and Llewellyn argue on lusory and ethical grounds that elite sporting competition should cease to be predicated on competitions between nations. From a lusory perspective, they argue that inter-national sports’ limitation on who can compete (due to it being based on national and cultural criteria) undermines some of the central principles of elite sport, such as athletic supremacy and merit. From an ethical perspective, they argue that inter-national sport is categorically unethical because the national and cultural narratives that frame such contests are inherently untruthful and inauthentic. In this article, we challenge Gleaves and Llewellyn on both these grounds and argue that national identity and representation are worthy values that can be achieved through sport, and that inter-national sport, far from being categorically unethical, has the potential to stimulate meaningful cultural conversations, both within and between national communities. 相似文献
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Gerda Strutzenberger Joseph Moore Hywel Griffiths Hermann Schwameder Gareth Irwin 《European Journal of Sport Science》2016,16(2):165-171
Kinesio-tape® has been suggested to increase blood circulation and lymph flow and might influence the muscle's ability to maintain strength during fatigue. Therefore, the aim of this study was to investigate the influence of gluteal Kinesio-tape® on lower limb muscle strength in non-fatigued and fatigued conditions. A total of 10 male rugby union players performed 20-m sprint and vertical jump tests before and after a rugby-specific fatigue protocol. The 20-m sprint time was collected using light gates (SMARTSPEED). A 9-camera motion analysis system (VICON, 100 Hz) and a force plate (Kistler, 1000 Hz) measured the kinematics and kinetics during a counter movement jump and drop-jump. The effect of tape and fatigue on jump height, maximal vertical ground reaction force, reactivity strength index as well as lower limb joint work were analysed via a two-way analysis of variance. The fatigue protocol resulted in significantly decreased performance of sprint time, jump heights and alterations in joint work. No statistical differences were found between the taped and un-taped conditions in non-fatigued and fatigued situation as well as in the interaction with fatigue. Therefore, taping the gluteal muscle does not influence the leg explosive strength after fatiguing in healthy rugby players. 相似文献
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Trapping single human osteoblast-like cells from a heterogeneous population using a dielectrophoretic microfluidic device 总被引：1，自引：0，他引：1
We describe a system for the isolation, concentration, separation, and recovery of human osteoblast-like cells from a heterogeneous population using dielectrophoretic ring traps. Cells flowing in a microfluidic channel are immobilized inside an electric field cage using negative dielectrophoresis. A planar ring electrode creates a closed trap while repelling surrounding cells. Target cells are identified by fluorescent labeling, and are trapped as they pass across a ring electrode by an automated system. We demonstrate recovery of small populations of human osteoblast-like cells with a purity of 100%, which in turn demonstrates the potential of such a device for cell selection from a heterogeneous population. 相似文献
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