Results 261 to 270 of about 2,519,444 (296)
Some of the next articles are maybe not open access.
Spatial Interpolation and Disaggregation of Multipliers
Geographical Analysis, 2004Most non‐survey methods of estimating single‐region multipliers have been shown to produce a systematic upward bias, unless a considerable amount of “superior” data is added. Here it is argued that this conclusion does not need to apply to the case of a non‐survey, spatial disaggregation of multipliers.
openaire +2 more sources
Multiplying the impact of conservation funding using spatial exchange rates
Frontiers in Ecology and the Environment, 2023Given declines in biodiversity and ecosystem services, funding to support conservation must be invested effectively. However, funds for conservation often come with geographic restrictions on where they can be spent. We introduce a method to demonstrate to supporters of conservation how much more could be achieved if they were to allow greater ...
Paul R Armsworth +9 more
openaire +1 more source
Frequency Multiplier Using Waveguide-Based Spatial Power-Combining Architecture
IEEE Transactions on Microwave Theory and Techniques, 2005In this paper, an architecture of a frequency multiplier is proposed and demonstrated with emphasis on the development of a 12-24-GHz frequency doubler based on a waveguide spatial power-combining technique. This frequency doubler is designed by spatially combining four monolithic-microwave integrated-circuit multiplier chips operating from 11-13 to 22-
Ke Wu
exaly +3 more sources
On the Lagrange Multiplier Test for Spatial Correlation in Econometric Models
Journal of Mathematical Sciences, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fazekas, I., Lauridsen, J.
exaly +3 more sources
Diphasic and Polyphasic Temporal Modulations Multiply Apparent Spatial Frequency
Perception, 1974The effects of diphasic and polyphasic flicker on apparent spatial frequency were studied in several experiments through simultaneous spatial-frequency matches. In diphasic flicker the spatial phase of a sinusoidal grating alternated between two values in a counterphase fashion, and in polyphasic flicker the spatial phases of gratings were varied ...
V, Virsu, G, Nyman, P K, Lehtiö
openaire +2 more sources
Multiply and sum spatial compounding in Plane wave Imaging
2016 IEEE International Ultrasonics Symposium (IUS), 2016This paper is a part of the IUS 2016 Plane-wave Imaging Challenge submission. Spatial compounding of several low-resolution images taken from different angles is a well-established practice in ultrasound imaging. The usual procedure relies on averaging several images using arithmetic mean.
Tomasz Steifer +2 more
openaire +1 more source
The Spatial Efficiency Multiplier and Random Effects in Spatial Stochastic Frontier Models
2016We extend the emerging literature on spatial frontier models in three respects. Firstly, we account for latent heterogeneity by developing a maximum likelihood random effects spatial autoregressive (SAR) stochastic frontier model. Secondly, to analyze the finite sample properties of a spatial stochastic frontier model we develop a Monte Carlo ...
Anthony Glass +3 more
openaire +1 more source
A spatial nonparametric analysis of local multipliers [PDF]
, 2011 In this paper we present a spatial nonparametric analysis of local multipliers. Following Moretti (2010), we estimate the effect of an exogenous shock in the employment of the tradable sector on the employment in either the nontradable sector or the rest of the tradable sector using a nonparametric procedure that allows for spatial effects. In addition,
Stefano Magrini, Margherita Gerolimetto
openaire +1 more source
Simulation of Alumina Nanopores as High Spatial Resolution Electron Multipliers
IEEE Transactions on Electron Devices, 2016An electron multiplier (EM) is a device that can multiply incident electrons in a process that involves electron bombardment of a secondary emissive material, resulting in a large shower of electrons. Several types of this device have been fabricated up to now for different purposes.
Ali Taheri
exaly +2 more sources
Developing Spatial-Movement Concepts in Multiply Handicapped Students
Journal of Visual Impairment & Blindness, 1984Describes a group motor-route activity to help students develop a complete understanding of spatial-movement concepts and to increase their cognitive motor skills.
openaire +1 more source