778 research outputs found
Hawaiian Monk Seal Pupping Locations in the Northwestern Hawaiian Islands
Most births of the endangered Hawaiian monk seal, Monachus
schauinslandi, occur in specific beach areas in the Northwestern Hawaiian
Islands. Data collected from 1981 to 1988 on the locations of monk seal births
and of the first sightings of neonatal pups were summarized to identify preferred
birth and nursery habitats. These areas are relatively short lengths of beach at
the breeding islands and have some common characteristics, of which the primary
feature is very shallow water adjacent to the shoreline. This feature, which
limits access by large sharks to the water used by mother-pup pairs during the
day, should enhance pup survival
Report on the evidence for net job creation from policy support for energy efficiency and renewable energy: An appraisal of multi-sectoral modelling techniques
First paragraph: The global response in the face of man-made climate change has focused on reducing the environmental impacts of human activities. The Kyoto protocol, for instance, was the world first global agreement to reduce emissions of greenhouse gases. Much of the focus of national and international emissions reduction strategies has been on the way in which energy is produced and used in economies. Evidence suggests that much of the economic development since the industrial revolution has gone hand in hand with increased demand for and use of energy. This has typically over the last century increased demand for and use of energy from fossil fuels, such as from coal, oil and gas. The ways in which energy is produced and used can have significant impacts on greenhouse gas emissions. Solutions proposed for reducing emissions during energy production include renewable energy technologies, while energy efficiency has been proposed as the key mechanism through which energy use is reduced
Regional Policy Spillovers: The National Impact of Demand-Side Policy in an Interregional Model of the UK Economy
UK regional policy has been advocated as a means of reducing regional disparities and stimulating national growth. However, there is limited understanding of the interregional and national effects of such a policy. This paper uses an interregional computable general equilibrium model to identify the national impact of a policy-induced regional demand shock under alternative labour market closures. Our simulation results suggest that regional policy operating solely on the demand side has significant national impacts. Furthermore, the effects on the non-target region are particularly sensitive to the treatment of the regional labour market
Regional policy spillovers : the national impact of demand-side policy in an interregional model of the UK economy
UK regional policy has been advocated as a means of reducing regional disparities and stimulating national growth. However, there is limited understanding of the interregional and national effects of such a policy. This paper uses an interregional computable general equilibrium model to identify the national impact of a policy-induced regional demand shock under alternative labour market closures. Our simulation results suggest that regional policy operating solely on the demand side has significant national impacts. Furthermore, the effects on the nontarget region are particularly sensitive to the treatment of the regional labour market
The impact on the Scottish economy of reducing greenhouse gas emissions in Scotland: Illustrative findings from an experimental computable general equilibrium model for Scotland: Final Report October 2008
First paragraph: This project uses an experimental energy-economy-environment computable general equilibrium (CGE) model of the Scottish economy (AMOSENVI) to conduct illustrative simulations of the economic and environmental impacts of various options to reduce the generation of CO2 emissions (as the main greenhouse gas) in Scotland. These simulations are illustrative in nature because the process of appropriate database development and model specification for a comprehensive and accurate analysis of climate change policy issues for Scotland, while advanced relative to many regional (and even national) economies, is still in its very early stages. One of the key objectives of this project is to illustrate the potential value-added to Scotland's analytical capacity if further investment is made (by both the policy community, particularly in terms of data provision, and the research community, with public support, for example by seeking support from the research councils) in developing an appropriate CGE modelling framework
Physics-Based Mixed-Mode Reverse Recovery Modeling And Optimization Of Si PiN And MPS Fast Recovery Diodes
The paper presents the results of the application of physics-based mixed-mode simulations to the analysis and optimization of the reverse recovery for Si-based fast recovery diodes (FREDs) using Platinum (Pt) lifetime killing. The trap model parameters are extracted from Deep Level Transient Spectroscopy (DLTS) characterization. The model is validated against experimental characterization carried out on the current International Rectifier (IR) FRED PiN technology. Improved designs, using emitter control efficiency and merged PiN-Schottky structures, are analyzed. Comparison between simulated and measured results are presente
Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrt{s}=1800 and 630 GeV
Inclusive dijet production at large pseudorapidity intervals (delta_eta)
between the two jets has been suggested as a regime for observing BFKL
dynamics. We have measured the dijet cross section for large delta_eta in ppbar
collisions at sqrt{s}=1800 and 630 GeV using the DO detector. The partonic
cross section increases strongly with the size of delta_eta. The observed
growth is even stronger than expected on the basis of BFKL resummation in the
leading logarithmic approximation. The growth of the partonic cross section can
be accommodated with an effective BFKL intercept of
a_{BFKL}(20GeV)=1.65+/-0.07.Comment: Published in Physical Review Letter
Search for Large Extra Dimensions in Dielectron and Diphoton Production
We report a search for effects of large extra spatial dimensions in ppbar
collisions at a center-of-mass energy of 1.8 TeV with the DZero detector, using
events containing a pair of electrons or photons. The data are in good
agreement with the expected background and do not exhibit evidence for large
extra dimensions. We set the most restrictive lower limits to date, at the 95%
confidence level, on the effective Planck scale between 1.0 TeV and 1.4 TeV for
several formalisms and numbers of extra dimensions.Comment: 6 pages, 2 figures, submitted to Phys. Rev. Let
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