1,709 research outputs found
Photovoltaic system criteria documents. Volume 3: Environmental issues and evaluation criteria for photovoltaic applications
The environmental issues and evaluation criteria relating to the suitability of sites proposed for photovoltaic (PV) system deployment are identified. The important issues are defined, briefly discussed and then developed into evaluation criteria. System designers are provided with information on the environmental sensitivity of PV systems in realistic applications, background material which indicates the applicability of the siting issues identified, and evaluation criteria are defined to facilitate the selection of sites that maximize PV system operation
Photovoltaic system criteria documents. Volume 1: Guidelines for evaluating the management and operations planning of photovoltaic applications
Guidelines are provided to the Field Centers for organization, scheduling, project and cost control, and performance in the areas of project management and operations planning for Photovoltaics Test and Applications. These guidelines may be used in organizing a T and A Project Team for system design/test, site construction and operation, and as the basis for evaluating T and A proposals. The attributes are described for project management and operations planning to be used by the Field Centers. Specifically, all project management and operational issues affecting costs, schedules and performance of photovoltaic systems are addressed. Photovoltaic tests and applications include residential, intermediate load center, central station, and stand-alone systems. The sub-categories of system maturity considered are: Initial System Evaluation Experiments (ISEE); System Readiness Experiments (SRE); and Commercial Readiness Demonstration Projects (CRDP)
Photovoltaic system criteria documents. Volume 4: Review criteria for photovoltaic applications
Guidelines are provided for the organization, preparation and conduct of program reviews for photovoltaic applications. These criteria apply to all photovoltaic applications. They include, but are not limited to, the following: (1) Conceptual design review; (2) Preliminary design review; (3) Critical design review; and (4) Operational readiness review. Contract goal's and objectives are met through program monitoring for cost, schedule, and performance for both managerial and technical elements for all PV applications activities
Photovoltaic system criteria documents. Volume 2: Quality assurance criteria for photovoltaic applications
Quality assurance criteria are described for manufacturers and installers of solar photovoltaic tests and applications. Quality oriented activities are outlined to be pursued by the contractor/subcontractor to assure the physical and operational quality of equipment produced is included. In the broad sense, guidelines are provided for establishing a QA organization if none exists. Mainly, criteria is provided to be considered in any PV quality assurance plan selected as appropriate by the responsible Field Center. A framework is established for a systematic approach to ensure that photovoltaic tests and applications are constructed in a timely and cost effective manner
Anomalous peak in the superconducting condensate density of cuprate high T_{c} superconductors at a unique critical doping state
The doping dependence of the superconducting condensate density, n_{s}^{o},
has been studied by muon-spin-rotation for
Y_{0.8}Ca_{0.2}Ba_{2}(Cu_{1-z}Zn_{z})_{3}O_{7-\delta} and
Tl_{0.5-y}Pb_{0.5+y}Sr_{2}Ca_{1-x}Y_{x}Cu_{2}O_{7}. We find that n_{s}^{o}
exhibits a pronounced peak at a unique doping state in the slightly overdoped
regime. Its position coincides with the critical doping state where the normal
state pseudogap first appears depleting the electronic density of states. A
surprising correlation between n_{s}^{o} and the condensation energy U_{o} is
observed which suggests unconventional behavior even in the overdoped region.Comment: 10 pages, 3 figure
Using sports infrastructure to deliver economic and social change: Lessons for London beyond 2012
Over the last two decades, there has been a
new trend emerging within sport, which has
seen a shift, from investment for the sake of
sport, to investment in sport for good (Sport
England, 2008). In the context of the latter
approach, there has been an emergence of
the use of sport to address regeneration objectives,
largely stemming from the belief of government
and other sporting and non-sporting
organizations, that it can confer a wide range
of economic and social benefits to individuals
and communities beyond those of a purely
physical sporting nature, and can contribute
positively to the revitalization of declining
urban areas (BURA, 2003). This commentary
will examine regeneration legacy in the context
of the London Olympic Games. In particular,
it will focus on the use of sports stadia
as a tool for delivering economic and social
change, and by drawing upon previous examples,
suggest lessons London can learn to
enhance regeneration legacies beyond 2012
Absence of an isotope effect in the magnetic resonance in high- superconductors
An inelastic neutron scattering experiment has been performed in the
high-temperature superconductor to search for an
oxygen-isotope shift of the well-known magnetic resonance mode at 41 meV.
Contrary to a recent prediction (I. Eremin, {\it et al.}, Phys. Rev. B {\bf
69}, 094517 (2004)), a negligible shift (at best +0.2 meV) of the
resonance energy is observed upon oxygen isotope substitution
(OO). This suggests a negligible spin-phonon interaction in
the high- cuprates at optimal doping.Comment: 3 figure
Le Chiese riformate nel XVII e XVIII secolo
Entre la signature de l’édit de Nantes par Henri IV le 30 avril 1598 et les débuts de la Révolution française, le calvinisme français a connu deux principales phases. Jusqu’en 1685, il a une existence légale, même si les persécutions sont nombreuses et l’exercice du culte progressivement limité. L’édit de Fontainebleau de 1685 révoque l’édit de Nantes et interdit désormais officiellement le culte réformé jusqu’à la Révolution : c’est sous le terme de Désert que les protestants français désignent cette période. Malgré la poursuite de la répression, les Églises réformées réussissent à se réorganiser au cours du XVIIIe siècle. À partir des années 1760, le pouvoir se voit progressivement contraint de tolérer cette minorité religieuse. En raison de ces conditions politiques, le calvinisme français a connu au cours de ces deux siècles de profondes mutations
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