91,742 research outputs found
Using a spatial overlap approach to estimate the risk of collisions between deep diving seabirds and tidal stream turbines : a review of potential methods and approaches
Peer reviewedPublisher PD
Assessing, valuing and protecting our environment- is there a statistical challenge to be answered?
This short article describes some of the evolution in environmental regulation, management and monitoring and the information needs, closely aligned to the statistical challenges to deliver the evidence base for change and effect
Development of Electronic Data Processing /EDP/ augmented management system
To tailor the existing Unified Flight Analysis System to management data rather than technical data, a pilot model could be produced in breadboard form, using electronic data processing, in a matter of a few months at very moderate cost. Such a system lends itself to continuous refinement
Evaluating the Assessment Methodology for the Chlorophyll-a and Secchi Transparency Criteria at Beaver Lake, Arkansas
Taylor's Theorem for Functionals on BMO with Application to BMO Local Minimizers
In this note two results are established for energy functionals that are
given by the integral of over
with , the space of functions of Bounded Mean Oscillation of John &
Nirenberg. A version of Taylor's theorem is first shown to be valid provided
the integrand has polynomial growth. This result is then used to
demonstrate that, for the Dirichlet, Neumann, and mixed problems, every
Lipschitz-continuous solution of the corresponding Euler-Lagrange equations at
which the second variation of the energy is uniformly positive is a strict
local minimizer of the energy in , the subspace
of the Sobolev space for which the weak
derivative .Comment: 8 page
A program continuation to develop processing procedures for advanced silicon solar cells
Shallow junctions, aluminum back surface fields and tantalum pentoxide (Ta205) antireflection coatings coupled with the development of a chromium-palladium-silver contact system, were used to produce a 2 x 4 cm wraparound contact silicon solar cell. One thousand cells were successfully fabricated using batch processing techniques. These cells were 0.020 mm thick, with the majority (800) made from nominal ten ohm-cm silicon and the remainder from nominal 30 ohm-cm material. Unfiltered, these cells delivered a minimum AMO efficiency at 25 C of 11.5 percent and successfully passed all the normal in-process and acceptance tests required for space flight cells
General description and operation of the agro-environmental system: Crop management modeling
Input for a data management system to provide farmers with information to improve crop management practices in Virginia requires monitoring of control crops at field stations, crop surveys derived from remotely sensed aircraft data, meteorological data from synchronous satellites, and details of local agricultural conditions. Presently models are under development for determining pest problems, water balance in the soil, stages of plant maturity, and optimum planting date. The status of the Cerospora leafspot model for peanut crop management is considered. Other models under development planned relate to Cylindtocladium Blackrot and Sclerotinia blight of peanuts, cyst nematode (Globerdena solanacearum) of tobacco, and red crown rot of soybeans. A software for program for estimating precipitation and solar radiation on a statewise basis is also being developed
Study of radiation effects in Li-doped silicon solar cells
Radiation effects in lithium-doped silicon solar cell
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