wetlands as a situ for the growth of native plants, as a habitat for certain species of fish and aquatic birds, and because of their potential economic, cultural and recreational services, are valuable heritage so their protection and conservation is very essential. mostly due to the absence of wetlands services’ valuation, lack of special regulations, and lack of guarantee for these properties...

Workload control release mechanisms: from practice back to theory building Matthias Thürer a , Cristovao Silva b & Mark Stevenson c a Institut für Werkzeugmaschinen und Fabrikbetrieb, Technical University Berlin, Pascalstr. 8–9, 10587 Berlin, Germany b Mechanical Engineering Department, University of Coimbra, Pỏlo II Pinhal de Marrocos, 3030 Coimbra, Portugal c Department of Management Science,...

Abstract This paper sketches a model of product differentiation according to the hedonic hypothesis that is based on the theory of consumer behavior of Lancaster (1971). Lancaster suggested that utility is derived from the characteristics of the good and not the good itself. Thus, from the perception of the consumer, every characteristic has a price. This is the hedonic (or implicit) price. We ...

The concept of usefulness for keyword selection in topic identi cation problems is reformulated and extended to the multi-class domain. The derivation is shown to be a generalisation of that for the two class problem. The technique is applied to both multinomial and Poisson based estimates of word probability, and shown to outperform or compare favourably to various information theoretic techni...

Rob Antrobus Security Lancaster Research Centre Lancaster University Lancaster LA1 4WA UK security-centre.lancs.ac.uk [email protected] Sylvain Frey Security Lancaster Research Centre Lancaster University Lancaster LA1 4WA UK security-centre.lancs.ac.uk [email protected] Benjamin Green Security Lancaster Research Centre Lancaster University Lancaster LA1 4WA UK security-centre.la...

It is a pleasure to congratulate the authors for this excellent, original and pedagogical paper. I read a preliminary draft at the end of 2006 and I then mentioned to the authors that their work should be set within the framework of Lancaster probabilities, a remoted corner of the theory of probability, now described in their Section 6.1. The reader is referred to Lancaster (1958, 1963, 1975) a...

Gold nanoparticles as a substrate in bio-analytical near-infrared surface-enhanced Raman scattering Holly J. Butler , Simon W. Fogarty, Jemma G. Kerns , Pierre L. MartinHirsch, Nigel J. Fullwood, Francis L. Martin 1Centre for Biophotonics, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4YQ, UK; 2Division of Biomedical and Life Sciences, Faculty of Health and Medicin...

1 Department of Biological Sciences, Institute of Environmental and Natural Sciences, University of Lancaster, Lancaster, United Kingdom LA1 4YQ. 2 Centre for Ecology and Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, Lancaster, LA1 4AP. 3 Current address: Centre for Ecology and Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, Lancaster, LA1 4AP. Email: sjt...