The implementation of good practice in school-based drug education : a stakeholder evaluation
This thesis analyses the delivery of drug education in the school setting through an exploration of the views, experiences and actions of two key stakeholders in the process: teachers with responsibility for programme co-ordination and development and pupils in the 15-16 year old age group. It is based on mixed methodology research carried out in schools in the East Midlands of England (1997-1999) and is inspired by post-positivist evaluation paradigms. Drawing on theories and models from sociology, psychology (communication theory), policy studies and health education, the thesis promotes understanding of factors helping and hindering the implementation of principles of good practice in drug education. The main reasons for a discrepancy between `ideals' and chalk face realities emerge as timetable constraints, a lack of confident and skilled delivery teachers and uncertainty in relation to the acceptability of a harm-reduction focus to programmes. Implicated, on a deeper level, are the dominant values in the education system and the ideology behind current drug control policy. The thesis develops a conceptual schema that captures the personal, interpersonal, organisational and wider, contextual influences behind patterns of variability in young people's take-up of drug education messages and indicates how these interrelate. It also sets out an argument that the key to efficacy in drug education lies in the sensitive tailoring of programmes to the pre-dispositions that young people bring to the process. The thesis concludes with recommendations for the future enhancement of policy and practice in this area.
Evaluating health promotion programs
The author, Thomas W Valente, is Associate Professor of Preventive Medicine at the University of Southern California School of Medicine. So the book is built on the author’s experience in evaluating health communication projects and in teaching programme evaluation to graduate level students in public health.

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Energy
Energy is often defined as the ability to do work. There are many forms of energy. A few examples include; Gravitational energy, Kinetic energy (energy of motion), Thermal energy (heat energy), Potential energy. Potential energy is the energy something has based on its position in the universe. A stretched elastic band has potential energy. A rock held up in the air has potential energy based on its position.