7,483 research outputs found
What Drives Fiscal Decentralisation?
This paper investigates the determinants of fiscal decentralisation, focusing in particular on the impact of the level of income on the level of fiscal decentralisation. Various measures of fiscal decentralisation, several of them novel in this context, are employed in a cross-country econometric model to test established and more recent hypotheses. Paying careful attention to variable measurement, model specification and sample coverage, the results suggest that there are significant relationships between a range of factors, including income, geographical size, population density, population diversity, military expenditure, the structure of the public sector and openness to trade, and fiscal decentralisation. However, these relationships may be more complicated than previously reported. For the entire sample and for the OECD subsample a positive relationship between income and decentralisation is found, which corroborates the results found in earlier studies. However, for the middle and lower income nations, higher income is found to be associated with less decentralisation.
Battlegrounds of environmental change
The Thames catchment encompasses one of Europe’s largest cities, the UK’s principal
aquifer, an extensive zone of coastal interaction and much else. It presents a unique
conjunction of geological, hydrogeological, environmental and socio-economic factors that are
intrinsically linked by the effects of environmental change and the pressures of developmen
Prototyping scalable digital signal processing systems for radio astronomy using dataflow models
There is a growing trend toward using high-level tools for design and
implementation of radio astronomy digital signal processing (DSP) systems. Such
tools, for example, those from the Collaboration for Astronomy Signal
Processing and Electronics Research (CASPER), are usually platform-specific,
and lack high-level, platform-independent, portable, scalable application
specifications. This limits the designer's ability to experiment with designs
at a high-level of abstraction and early in the development cycle.
We address some of these issues using a model-based design approach employing
dataflow models. We demonstrate this approach by applying it to the design of a
tunable digital downconverter (TDD) used for narrow-bandwidth spectroscopy. Our
design is targeted toward an FPGA platform, called the Interconnect Break-out
Board (IBOB), that is available from the CASPER. We use the term TDD to refer
to a digital downconverter for which the decmation factor and center frequency
can be reconfigured without the need for regenerating the hardware code. Such a
design is currently not available in the CASPER DSP library.
The work presented in this paper focuses on two aspects. Firstly, we
introduce and demonstrate a dataflow-based design approach using the dataflow
interchange format (DIF) tool for high-level application specification, and we
integrate this approach with the CASPER tool flow. Secondly, we explore the
trade-off between the flexibility of TDD designs and the low hardware cost of
fixed-configuration digital downconverter (FDD) designs that use the available
CASPER DSP library. We further explore this trade-off in the context of a
two-stage downconversion scheme employing a combination of TDD or FDD designs.Comment: Accepted for publication in Radio Scienc
The Athletic Profile of Fast Bowling in Cricket : A Review
Cricket is a global sport played in over 100 countries with elite performers attracting multimillion dollar contracts. Therefore, performers maintaining optimum physical fitness and remaining injury free is important. Fast bowlers have a vital position in a cricket team, and there is an increasing body of scientific literature that has reviewed this role over the past decade. Previous research on fast bowlers has tended to focus on biomechanical analysis and injury prevention in performers. However, this review aims to critically analyze the emerging contribution of physiological-based literature linked to fast bowling in cricket, highlight the current evidence related to simulated and competitive in-match performance, and relate this practically to the conditioning coach. Furthermore, the review considers limitations with past research and possible avenues for future investigation. It is clear with the advent of new applied mobile monitoring technology that there is scope for more ecologically valid and longitudinal exploration capturing in-match data, providing quantification of physiological workloads, and analysis of the physical demands across the differing formats of the game. Currently, strength and conditioning specialists do not have a critical academic resource with which to shape professional practice, and this review aims to provide a starting point for evidence in the specific areaPeer reviewedFinal Accepted Versio
An Integrated Analysis of Radial Velocities in Planet Searches
We discuss a Bayesian approach to the analysis of radial velocities in planet
searches. We use a combination of exact and approximate analytic and numerical
techniques to efficiently evaluate chi-squared for multiple values of orbital
parameters, and to carry out the marginalization integrals for a single planet
including the possibility of a long term trend. The result is a robust
algorithm that is rapid enough for use in real time analysis that outputs
constraints on orbital parameters and false alarm probabilities for the planet
and long term trend. The constraints on parameters and odds ratio that we
derive compare well with previous calculations based on Markov Chain Monte
Carlo methods, and we compare our results with other techniques for estimating
false alarm probabilities and errors in derived orbital parameters. False alarm
probabilities from the Bayesian analysis are systematically higher than
frequentist false alarm probabilities, due to the different accounting of the
number of trials. We show that upper limits on the velocity amplitude derived
for circular orbits are a good estimate of the upper limit on the amplitude of
eccentric orbits for eccentricities less than about 0.5.Comment: 16 pages, 9 figures, to appear in MNRA
A comparative analysis of two different analysers used for determination of the Total Organic Carbon in pharmaceutical grade water
Total Organic Carbon (TOC) is a routine test for pharmaceutical grade water. Several manufacturers supply equipment of different designs but there is a dearth of published, peer-reviewed, information evaluating the various analysers. In this study, we compared two TOC analysers, both validated to the same pharmacopoeial criteria, but with different oxidation and detection methods. The results in this paper show that there were no unexplained out-of-specification results and that both analysers operated equivalently in terms of the pharmacopoeial 500ppb pass/fail limits. However, significant differences between the TOC levels reported from paired samples were observed, two paired samples recorded a pass/fail conflict (albeit flagged with an overestimation warning), as well as differences in analyser responses between spiked samples that contained low levels of nitro- and chloro-carbon compounds
Comparative analysis of TOC and conductivity analysers as applied to pharmaceutical water analysis
Pharmaceutical grade water requires the measurement of bioburden, Total Organic Carbon and conductivity. Here we report a comparative analysis from two TOC analysers and two conductivity systems. The TOC analysers showed significantly different results
Flawed, yet authoritative? Organisational memory and the future of official military history after Chilcot
Official Military History (OH) is a thorny subject. Despite a century of deploying British service personnel to conflicts all over the world, over the past 100 years the British government has commissioned very few OHs.3 Offering an interpretation of military events that is typically based on early access to otherwise classified data, OH presents an opportunity for the political and military establishment to set out a perspective that aims at legitimacy but is typically criticised as being flawed. In this discussion paper we present the conflicting pressures and expectations that frame the writing of OH and ask whether such an activity will be possible in a world after the controversies associated with the Iraq War Inquiry of 2009-11
- …
