Cost Benefit Analysis of Labor Allocation and Training Schemes

Discrepancies in local labor markets occur as unsatisfactory matching of skill within the same region as well as redundant supply and unsatiated demand among regions. Some of this discrepancy could -- in principle -- be removed by letting supply in one region meet demand in another. A reallocation policy of this kind poses a few questions of prominent concern: 1. Can economic disvalue arising from imperfection of labor markets at a regional level be mathematically assessed? 2. Is it possible to define a regional measure of inefficiency on both sides -- demand and supply -- of the labor market? 3. How should vacancies be distributed over skill and space to alleviate inefficiency? These questions are investigated in this paper and a short-run solution is obtained via the primal-dual linear programming formulation of the problem

Are we willing to give what it takes? Willingness to pay for climate change adaptation in developing countries

Climate change adaptation is gaining traction as a necessary policy alongside mitigation, particularly for developing countries, many of which lack the resources to adapt. However, funding for developing country adaptation remains woefully inadequate. This paper identifies the burden of responsibility that individuals in the UK are willing to incur in support of adaptation projects in developing countries. Results from a nationally representative survey indicate that UK residents are willing to contribute £27 per year (or a median of £6 per year) towards developing country adaptation (US$30 and$7 using the World Bank’s purchasing power conversion factors). This represents less than one third of the back-of-the-envelope $100-140 per capita per year that the authors estimate would be needed to raise the$70-100bn per year recommended by the World Bank to fund developing country adaptation. Regressions indicate that WTP is driven mostly by a combination of beliefs and perceptions about one’s own knowledge levels, rather than actual knowledge of climate change. We conclude that, to engage the many different audiences that make up the ‘public’, communication efforts must move beyond the simple provision of information and instead, connect with people’s existing values and beliefs

Evolving Discourses on Water Resource Management and Climate Change in the Equatorial Nile Basin

Transboundary water resources management in the Equatorial Nile Basin (EQNB) is a politically contested issue. There is a growing body of literature examining water-related discourses which identifies the ability of powerful actors and institutions to influence policy. Concern about the effects of future climate change has featured strongly in research on the Nile River for several decades. It is therefore timely to consider whether and how these concerns are reflected in regional policy documents and policy discourse. This study analyzes discourse framings of water resources management and climate change in policy documents (27, published between 2001 and 2013) and as elicited in interviews (38) with water managers in the EQNB. Three main discursive framings are identified which are present in the discourses on both subjects: a problem-oriented environmental risk frame and two solution-oriented frames, on governance and infrastructure development. Climate change discourse only emerges as a common topic around 2007. The framings found in the water resources management discourse and the climate change discourse are almost identical, suggesting that discursive framings were adopted from the former for use in the latter. We infer that the climate change discourse may have offered a less politically sensitive route to circumvent political sensitivities around water allocation and distribution between riparian countries in the EQNB. However, the climate change discourse does not offer a lasting solution to the more fundamental political dispute over water allocation. Moreover, in cases where the climate change discourse is subsumed within a water resources management discourse, there are dangers that it will not fully address the needs of effective adaptation

Uncertainty in the spatial distribution of tropical forest biomass:a comparison of pan-tropical maps

BACKGROUND: Mapping the aboveground biomass of tropical forests is essential both for implementing conservation policy and reducing uncertainties in the global carbon cycle. Two medium resolution (500 m – 1000 m) pantropical maps of vegetation biomass have been recently published, and have been widely used by sub-national and national-level activities in relation to Reducing Emissions from Deforestation and forest Degradation (REDD+). Both maps use similar input data layers, and are driven by the same spaceborne LiDAR dataset providing systematic forest height and canopy structure estimates, but use different ground datasets for calibration and different spatial modelling methodologies. Here, we compare these two maps to each other, to the FAO’s Forest Resource Assessment (FRA) 2010 country-level data, and to a high resolution (100 m) biomass map generated for a portion of the Colombian Amazon. RESULTS: We find substantial differences between the two maps, in particular in central Amazonia, the Congo basin, the south of Papua New Guinea, the Miombo woodlands of Africa, and the dry forests and savannas of South America. There is little consistency in the direction of the difference. However, when the maps are aggregated to the country or biome scale there is greater agreement, with differences cancelling out to a certain extent. When comparing country level biomass stocks, the two maps agree with each other to a much greater extent than to the FRA 2010 estimates. In the Colombian Amazon, both pantropical maps estimate higher biomass than the independent high resolution map, but show a similar spatial distribution of this biomass. CONCLUSIONS: Biomass mapping has progressed enormously over the past decade, to the stage where we can produce globally consistent maps of aboveground biomass. We show that there are still large uncertainties in these maps, in particular in areas with little field data. However, when used at a regional scale, different maps appear to converge, suggesting we can provide reasonable stock estimates when aggregated over large regions. Therefore we believe the largest uncertainties for REDD+ activities relate to the spatial distribution of biomass and to the spatial pattern of forest cover change, rather than to total globally or nationally summed carbon density

From crisis to context: Reviewing the future of sustainable charcoal in Africa

Is charcoal a sustainable energy source in Africa? This is a crucial question, given charcoal's key importance to urban energy. In today's dominant policy narrative – the charcoal-crisis narrative – charcoal is deemed incompatible with sustainable and modern energy, blamed for looming ecological catastrophe, and demanding replacement. However, an emerging sustainability-through-formalization narrative posits that charcoal can be made sustainable – specifically, through formalization of production, trade, markets, and consumption technologies. This represents an important opportunity to go beyond the crisis narrative and to engage productively with charcoal. However, this ascendent narrative also risks misrepresenting the reality of charcoal on the continent and leading to inappropriate policies. The narrative's designation of the African charcoal sector as unsustainable at present obscures charcoal production's diverse and uncertain impacts across the continent; moreover, the association of informality with unsustainability obscures a similarly complex and diverse social reality as well as the ways that social processes and relations of power and inequality determine charcoal's sustainability. We argue that charcoal needs to be considered within its historical, social, and environmental contexts to better understand its present and the emergent pathways to sustainable energy futures. We draw upon research that is raising questions about both the charcoal-crisis and the sustainability-through-formalization narratives to argue for a new narrative of charcoal in context. This approaches charcoal as a politically, ecologically, and historically embedded resource, entailing significant socio-ecological complexity across diverse historical and geographical conjunctures, and calling for new agendas of interdisciplinary research with an orientation towards sustainability and justice.British Academ

Error control in polytope computations

This paper presents solutions for numerical computation on convex hulls; computational algorithms that ensure logical consistency and accuracy are proposed. A complete numerical error analysis is presented. It is shown that a global error bound for vertex-facet adjacency does not exist under logically consistent procedures. To cope with practical requirements, vertex preconditioned polytope computations are introduced using point and hyperplane adjustments. A global bound on vertex-facet adjacency error is affected by the global bound on vertices; formulas are given for a conservative choice of global error bounds

Twenty priorities for future social-ecological research on climate resilience

Faced with the global climate crisis and the inevitability of future climate shocks, enhancing social-ecological resilience has become an urgent area for research and policy internationally. Research to better understand the impacts of, and response to, climate shocks is critical to improve the resilience and well-being of affected people and places. This paper builds on the findings of a focus collection on this topic to provide a concluding and forward-looking perspective on the future of social-ecological research on climate resilience. Drawing on an expert workshop to identify research gaps, we distinguish 20 priorities for future research on climate resilience. These span four key themes: Systems and Scales, Governance and Knowledge, Climate Resilience and Development, and Sectoral Concerns. Given the need and urgency for evidence-based policies to address the climate crisis, the analysis considers the importance of understanding how findings on social-ecological resilience are used in policy, rather than solely focusing on how it is generated. Many of the priorities emphasise the governance systems within which climate research is produced, understood and used. We further reflect on the state of current evidence generation processes, emphasising that the involvement of a wider range of voices in the design, implementation and dissemination of climate resilience research is critical to developing the efficient and fair interventions it is meant to support