2,244 research outputs found
âElectricity Sector Reform in Developing Countries: A Survey of Empirical Evidence on Determinants and Performanceâ
This paper reviews the empirical evidence on electricity reform in developing countries. We find that country institutions and sector governance play an important role in success and failure of reform; reforms appear to have increased operating efficiency and expanded access to urban customers; they have to a lesser degree passed on efficiency gains to customers, tackled distributional effects, or improved rural access. Moreover, some of the literature is not methodologically robust or on a par with general development economics literature and findings on some issues are limited and inconclusive while some important areas are yet to be addressed. Until we know more, implementation of reforms will be more based on ideology and economic theory rather than solid economic evidence.Electricity, reform, developing countries
Measuring antibody coatings on gold nanoparticles by optical spectroscopy
The adsorption of antibodies onto gold nanoparticles to make goldâantibody conjugates is finding application in multiple areas. Goldâantibody conjugates for use in malaria diagnostics were prepared and a method of characterisation that can be applied to any goldâprotein conjugate was developed. When protein adsorbs onto a gold nanoparticle, it changes the local refractive index and so changes the surface plasmon resonance of the gold particle. Changes to the surface plasmon resonance manifest in the absorbance spectrum of the conjugates. This was measured by optical spectroscopy and relatively simple equations to convert spectral shifts to predictions of the protein layer thickness and mass coverage are presented. As with most protein adsorption reported in the literature, the results showed the protein adsorption to depend on antibody concentration, reaching a plateau at around 1 ÎŒg mlâ1. The coverage was estimated to be approximately 2â3 mg mâ2 and the coating thickness estimates were approximately 10 nm, which is consistent with active antibody. The results suggested more antibody was used in conjugate preparation than was necessary for complete coverage of the gold. This excess antibody could bind to the target antigen to reduce malaria test sensitivity. A key advantage of this characterisation method is that it is sufficiently simple to be used for quality control of conjugate production and the equations presented can be applied to other coatings on gold nanoparticles
Trilobita: phylogeny and evolutionary patterns
EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Modelling innovation and the macroeconomics of low-carbon transitions: theory, perspectives and practical use
This is the author accepted manuscript. The final version is available from Taylor & Francis (Routledge) via the DOI in this record.Energy and climate policies may have significant economy-wide impacts, which are regularly assessed based on quantitative energy-environment-economy models. These tend to vary in their conclusions on the scale and direction of the likely macroeconomic impacts of a low-carbon transition. This paper traces the characteristic discrepancies in modelsâ outcomes to their origins in different macro-economic theories, most importantly their treatment of technological innovation and finance. We comprehensively analyse the relevant branches of macro-innovation theory and group them into two classes: âEquilibriumâ and âNon-equilibriumâ. While both approaches are rigorous and self-consistent, they frequently yield opposite conclusions for the economic impacts of low-carbon policies. We show that model outcomes are mainly determined by their representations of monetary and finance dimensions, and their interactions with investment, innovation and technological change. Improving these in all modelling approaches is crucial for strengthening the evidence base for policy making and gaining a more consistent picture of the macroeconomic impacts of achieving emissions reductions objectives. The paper contributes towards the ongoing effort of enhancing the transparency and understanding of sophisticated model mechanisms applied to energy and climate policy analysis. It helps tackle the overall âblack boxâ critique, much-cited in policy circles and elsewhere
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Overcoming barriers to electrical energy storage: comparing California and Europe
Multiple market drivers suggest that electrical energy storage (EES) systems are going to be essential for future power systems within the next decade. However, the deployment of the technology is proceeding at very different rates around the world. Whereas the sector is progressing quickly in California, it is not gaining much traction, so far, in Europe. This research aims to examine the prospects for viable business models of EES to emerge, by focussing on the value proposition, value creation and value capture aspects of the technology. The market and regulatory framework in California and Europe are analysed critically, and changes to overcome the main barriers are recommended.
The research shows that the main barriers to viable business models are: inadequate definition and classification of EES in legislation; lack of markets for some ancillary services; inadequate market design that benefits traditional technologies; and the lack of need for EES in some jurisdictions.
The prospects are better in California because regulation is more advanced and favourable for the technology, and regulators are collaborating with developers and utilities to analyse barriers and solutions for the technology. In Europe, there is a need to study more deeply the necessity of EES, to clarify the definition of EES, create new markets for ancillary services and design technology-neutral market rules.This research was supported by the Energy Policy Research Group at the Judge Business School (University of Cambridge) and is part of the EPSRC Business, Economics, Planning and Policy for Energy Storage in Low-Carbon Futures project (Grant Number: EP/L014386/1)
Understanding factors associated with the translation of cardiovascular research: A multinational case study approach
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.This article has been made available through the Brunel Open Access Publishing Fund.Background: Funders of health research increasingly seek to understand how best to allocate resources in order to achieve maximum value from their funding. We built an international consortium and developed a multinational case study approach to assess benefits arising from health research. We used that to facilitate analysis of factors in the production of research that might be associated with translating research findings into wider impacts, and the complexities involved. Methods: We built on the Payback Framework and expanded its application through conducting co-ordinated case studies on the payback from cardiovascular and stroke research in Australia, Canada and the United Kingdom. We selected a stratified random sample of projects from leading medical research funders. We devised a series of innovative steps to: minimize the effect of researcher bias; rate the level of impacts identified in the case studies; and interrogate case study narratives to identify factors that correlated with achieving high or low levels of impact. Results: Twenty-nine detailed case studies produced many and diverse impacts. Over the 15 to 20 years examined, basic biomedical research has a greater impact than clinical research in terms of academic impacts such as knowledge production and research capacity building. Clinical research has greater levels of wider impact on health policies, practice, and generating health gains. There was no correlation between knowledge production and wider impacts. We identified various factors associated with high impact. Interaction between researchers and practitioners and the public is associated with achieving high academic impact and translation into wider impacts, as is basic research conducted with a clinical focus. Strategic thinking by clinical researchers, in terms of thinking through pathways by which research could potentially be translated into practice, is associated with high wider impact. Finally, we identified the complexity of factors behind research translation that can arise in a single case. Conclusions: We can systematically assess research impacts and use the findings to promote translation. Research funders can justify funding research of diverse types, but they should not assume academic impacts are proxies for wider impacts. They should encourage researchers to consider pathways towards impact and engage potential research users in research processes. © 2014 Wooding et al.; licensee BioMed Central Ltd.RAND Europe and HERG, with subsequent funding from the NHFA, the HSFC and the CIHR. This research was also partially supported by the Policy Research Programme in the English Department of Health
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Can wholesale electricity prices support âsubsidy-freeâ generation investment in Europe?
Using a Pan-European electricity dispatch model we find that with higher variable renewable energy (VRE) production wholesale power prices may no longer serve as a long-run signal for generation investment in 2025. If wind and solar are to be self-financing by 2025 under the current European market design, they would need to be operating in circumstances which combine lower capital cost with higher fossil fuel and/or carbon prices. In the absence of these conditions, long term subsidy mechanisms would need to continue in order to meet European renewable electricity targets. More VRE production will exacerbate the âmissing moneyâ problem for conventional generation. Thus, closures of unprofitable fossil fuel generation would sharpen and increase energy-only prices but would put more pressure on ancillary services markets to support system stability. Thus, the question of the need for a market redesign to let the market guide investments in both renewables and conventional generation would seem to remain
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