275 research outputs found
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Goodbye to Projects? - Briefing Paper 3: The changing format of development interventions.
yesThis briefing paper reports on research exploring ten detailed case studies of livelihoods-oriented interventions operating in Tanzania, South Africa, Uganda and Lesotho. As a proxy for best practice, these interventions were analysed through an audit of sustainable livelihood `principles¿. This revealed general lessons about both the practical opportunities and challenges for employing sustainable livelihoods approaches to the design, implementation, monitoring and evaluation of development interventions and also about the changing format of development interventions.Department for International Development
Recommended from our members
Goodbye to Projects? Briefing Paper 1: An Overview: Projects and Principles.
YesThis briefing paper reports on research exploring ten detailed case studies of livelihoods-oriented interventions operating in Tanzania, Lesotho, South Africa and Uganda. Analysing these interventions through an audit of sustainable livelihood `principles¿ (as a proxy for best practice) revealed general lessons both about the practical opportunities and challenges for employing sustainable livelihoods approaches to the design, implementation, monitoring and evaluation of development interventions and also about the changing format of development interventions.Department for International Developmen
Recommended from our members
Goodbye to Projects? Briefing Paper 2: The Application of the SL Principles.
YesThis briefing paper reports on research exploring ten detailed case studies of livelihoods-oriented interventions operating in Tanzania, South Africa, Uganda and Lesotho. As a proxy for best practice, these interventions were analysed through an audit of sustainable livelihood `principles¿. This revealed general lessons about both the practical opportunities and challenges for employing sustainable livelihoods approaches to the design, implementation, monitoring and evaluation of development interventions and also about the changing format of development interventions.Department for International Development
Recommended from our members
Goodbye to Projects? - Briefing Paper 4: Lessons for the community-based planning interventions.
YesThis briefing paper compares two approaches to community-based planning in Tanzania, South Africa and Uganda. Analysing these interventions through an audit of sustainable livelihood `principles¿ (as a proxy for best practice) reveals general lessons about both the practical opportunities and challenges for employing sustainable livelihoods approaches to the design, implementation, monitoring and evaluation of development interventions and also about the changing format of development interventions.Department for International Developmen
The Galaxy Number Density Profile of Haloes
More precise measurements of galaxy clustering will be provided by the next
generation of galaxy surveys such as DESI, WALLABY and SKA. To utilize this
information to improve our understanding of the Universe, we need to accurately
model the distribution of galaxies in their host dark matter halos. In this
work we present a new galaxy number density profile of haloes, which makes
predictions for the positions of galaxies in the host halo, different to the
widely adopted Navarro-Frenk-White (NFW) profile, since galaxies tend to be
found more in the outskirts of halos (nearer the virial radius) than an NFW
profile. The parameterised galaxy number density profile model of haloes is fit
and tested using the DARKSAGE semi-analytic model of galaxy formation. We find
that our galaxy number density profile model of haloes can accurately reproduce
the halo occupation distribution and galaxy two-point correlation function of
the DARKSAGE simulation. We also derive the analytic expressions for the
circular velocity and gravitational potential energy for this profile model. We
use the SDSS DR10 galaxy group catalogue to validate this galaxy number density
profile model of haloes. Compared to the NFW profile, we find that our model
more accurately predicts the positions of galaxies in their host halo and the
galaxy two-point correlation function.Comment: 13 pages. 10 figures. Appear on Ap
Hairiness: the missing link between pollinators and pollination
Background. Functional traits are the primary biotic component driving organism influence on ecosystem functions; in consequence, traits are widely used in ecological research. However, most animal trait-based studies use easy-to-measure characteristics of species that are at best only weakly associated with functions. Animal-mediated pollination is a key ecosystem function and is likely to be influenced by pollinator traits, but to date no one has identified functional traits that are simple to measure and have good predictive power. Methods. Here, we show that a simple, easy to measure trait (hairiness) can predict pollinator effectiveness with high accuracy. We used a novel image analysis method to calculate entropy values for insect body surfaces as a measure of hairiness. We evaluated the power of our method for predicting pollinator effectiveness by regressing pollinator hairiness (entropy) against single visit pollen deposition (SVD) and pollen loads on insects. We used linear models and AICC model selection to determine which body regions were the best predictors of SVD and pollen load. Results. We found that hairiness can be used as a robust proxy of SVD. The best models for predicting SVD for the flower species Brassica rapa and Actinidia deliciosa were hairiness on the face and thorax as predictors (R2 D0:98 and 0.91 respectively). The best model for predicting pollen load for B. rapa was hairiness on the face (R2 D0:81). Discussion. We suggest that the match between pollinator body region hairiness and plant reproductive structure morphology is a powerful predictor of pollinator effectiveness. We show that pollinator hairiness is strongly linked to pollination an important ecosystem function, and provide a rigorous and time-efficient method for measuring hairiness. Identifying and accurately measuring key traits that drive ecosystem processes is critical as global change increasingly alters ecological communities, and subsequently, ecosystem functions worldwide.University of Auckland PCIG14-GA- 2013-631653, MBIE C11X130
Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations
The development of new liquid and solid state electrolytes is paramount for the advancement of electrochemical devices such as lithium batteries and solar cells. Ionic liquids have shown great promise in both these applications. Here we demonstrate the use of phosphonium cations with small alkyl chain substituents, in combination with a range of different anions, to produce a variety of new halide free ionic liquids that are fluid, conductive and with sufficient thermal stability for a range of electrochemical applications. Walden plot analysis of the new phosphonium ionic liquids shows that these can be classed as "good" ionic liquids, with low degrees of ion pairing and/or aggregation, and the lithium deposition and stripping from one of these ionic liquids has been demonstrated. Furthermore, for the first time phosphonium cations have been used to form a range of organic ionic plastic crystals. These materials can show significant ionic conductivity in the solid state and thus are of great interest as potential solid-state electrolyte materials. <br /
Regional Multiple Pathology Scores Are Associated with Cognitive Decline in Lewy Body Dementias.
Dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD) are characterized by the presence of α-synuclein-containing Lewy bodies and Lewy neurites. However, both dementias also show variable degrees of Alzheimer's disease (AD) pathology (senile plaques and neurofibrillary tangles), particularly in areas of the cortex associated with higher cognitive functions. This study investigates the contribution of the individual and combined pathologies in determining the rate of cognitive decline. Cortical α-synuclein, phosphorylated tau (phosphotau) and Aβ plaque pathology in 34 PDD and 55 DLB patients was assessed semi-quantitatively in four regions of the neocortex. The decline in cognition, assessed by Mini Mental State Examination, correlated positively with the cortical α-synuclein load. Patients also had varying degrees of senile Aβ plaque and phosphotau pathology. Regression analyses pointed to a combined pathology (Aβ plaque plus phosphotau plus α-synuclein-positive features), particularly in the prefrontal cortex (BA9) and temporal lobe neocortex with the superior and middle temporal gyrus (BA21, 22), being a major determining factor in the development of dementia. Thus, cognitive decline in Lewy body dementias is not a consequence of α-synuclein-induced neurodegeneration alone but senile plaque and phosphorylated tau pathology also contribute to the overall deficits.The main fundingwas provided by the Alzheimer’s SocietyUK and
the BUPA Foundation. The research in Newcastle was supported in
part by the Dunhill Medical Trust (R173/1110). Tissue for this study
was provided by (i) the Newcastle Brain Tissue Resource; (ii) the
London Neurodegenerative Brain Bank; and (iii) the Thomas Willis
Oxford Brain Collection. All three resources are funded in part by
grants from the UK Medical Research Council and by Brains for
Dementia Research, a joint venture between Alzheimer’s Society
and Alzheimer’s Research UK. In Singapore, funding was provided
by a Centre grant (NMRC/CG/NUHS/2010) and a Clinical Scientist
Award (NMRC/CSA/032/2011) from the National Medical
Research Council.This is the final published version. It first appeared at http://onlinelibrary.wiley.com/doi/10.1111/bpa.12182/abstract
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