منابع مشابه
Preparing the Ground: Social Research for the Facilitation of Sustainable Agriculture
‘Facilitating sustainable agriculture’ is an agricultural extension paradigm based on farming systems practice and the actor-oriented perspective on rural development. The challenge for agricultural extension is to facilitate a convergence of conflicting interests within a forum governed by the principle of communicative rationality. An initial stakeholder analysis is advised as a first step to...
متن کاملPreparing the leg for ground contact in running: the contribution of feed-forward and visual feedback.
While running on uneven ground, humans are able to negotiate visible but also camouflaged changes in ground level. Previous studies have shown that the leg kinematics before touch down change with ground level. The present study experimentally investigated the contributions of visual perception (visual feedback), proprioceptive feedback and feed-forward patterns to the muscle activity responsib...
متن کاملPreparing the Ground for a Helium-3 Economy from a Polar Lunar
Introduction: Helium-3, deposited by the solar wind in the lunar regolith, may potentially be used as fusion power for terrestrial electricity and deep-space propulsion[1,2]. It could be a key resource in self-sustaining interplanetary economy, since the establishment of controlled d-3 He fusion would endow this resource with a value of roughly $3M/kg, assuming that fuel comprises 20% of the co...
متن کاملPreparing ground States of quantum many-body systems on a quantum computer.
Preparing the ground state of a system of interacting classical particles is an NP-hard problem. Thus, there is in general no better algorithm to solve this problem than exhaustively going through all N configurations of the system to determine the one with lowest energy, requiring a running time proportional to N. A quantum computer, if it could be built, could solve this problem in time sqrt[...
متن کاملOn preparing ground states of gapped Hamiltonians: An efficient Quantum Lovász Local Lemma
A frustration-free local Hamiltonian has the property that its ground state minimises the energy of all local terms simultaneously. In general, even deciding whether a Hamiltonian is frustration-free is a hard task, as it is closely related to the QMA1-complete quantum satisfiability problem (QSAT) – the quantum analogue of SAT, which is the archetypal NP-complete problem in classical computer ...
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ژورنال
عنوان ژورنال: Academic Medicine
سال: 1999
ISSN: 1040-2446
DOI: 10.1097/00001888-199905000-00014