4,619 research outputs found
Organic-industrial complex or herbal remedy? A case near Seattle and Vancouver
This report was presented at the UK Organic Research 2002 Conference. Organic conversion can help maintain property and lifestyle. But organic is not always local. Based on long-term contacts this poster notes market, global and policy implications of an American family farm which converted to organic herbs with a multinational partner. Is the family’s affiliation with corporate macro-actors the happy human face of globalisation? Or does it support Pollan’s (2001) warning that an ‘organic-industrial complex’ will dominate organic movements in the US, UK and world-wide
Q^2-Dependence of the Drell-Hearn-Gerasimov integral
The energy and four-momentum (Q^2) dependence of the photo-absorption cross
section on the proton is calculated for helicity -1/2 and -3/2 states. An
effective Lagrangian model is used, formulated in terms of meson and baryon
degrees of freedom, which obeys crossing symmetry, unitarity, Lorentz and gauge
invariance. The difference in the cross sections for the two helicity states,
the Drell-Hearn-Gerasimov integral , is evaluated at different
. We find that at small momentum transfer the absolute value of
first increases to reach a maximum at
before decreasing at higher .Comment: 8 pages, 3 figures, revte
Towards a service-oriented e-infrastructure for multidisciplinary environmental research
Research e-infrastructures are considered to have generic and thematic parts. The generic part provids high-speed networks, grid (large-scale distributed computing) and database systems (digital repositories and data transfer systems) applicable to all research commnities irrespective of discipline. Thematic parts are specific deployments of e-infrastructures to support diverse virtual research communities. The needs of a virtual community of multidisciplinary envronmental researchers are yet to be investigated. We envisage and argue for an e-infrastructure that will enable environmental researchers to develop environmental models and software entirely out of existing components through loose coupling of diverse digital resources based on the service-oriented achitecture. We discuss four specific aspects for consideration for a future e-infrastructure: 1) provision of digital resources (data, models & tools) as web services, 2) dealing with stateless and non-transactional nature of web services using workflow management systems, 3) enabling web servce discovery, composition and orchestration through semantic registries, and 4) creating synergy with existing grid infrastructures
K-Lambda and K-Sigma photoproduction in a coupled channels framework
A coupled channels analysis, based on the K-matrix approach, is presented for
photo-induced kaon production. It is shown that channel coupling effects are
large and should not be ignored. The importance of contact terms in the
analysis, associated with short range correlations, is pointed out. The
extracted parameters are compared with SU(3)-model predictions.Comment: 15 pages, 10 figures; Submitted to Physical Review C. v2: A figure
showing the effect of P13(1900) added v3: Small spelling corrections, one
reference update
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