75 research outputs found
Swimming Against the Tide
An Analysis of Private Sector Development Issues in Small Economies This book examines the underlying factors that determine the environment for investment and growth in small economies, focussing on those in the Pacific.The private sector can flourish and create employment opportunities only if the environment in which it operates is conducive to business. Governments can often create an environment that increases the costs of doing business, reduces profits, and discourages dynamism and entrepreneurship. These issues include • fostering financial sector development for credit to be more readily available for business; • clarifying land rights and modifying them with respect to cultural preservation and the development of land markets; • reducing the role of the state in the economies of the region; • revamping the regulatory regimes for the business environment to be less constrained and monopolies more prudently regulated; • focusing on the assistance of small-scale rural enterprises. With concerted efforts, governments can ensure the resolution of these critical issues. However, doing so requires considerable time and great effort. Nevertheless, now is a perfect time to start the process. Strategies for change should focus on what causes the low rates of return on capital as well as the constraints to business startup and development.private sector development; institutional economics
Brazil's sugarcane sector : a case of lost opportunity
The Brazilian sugar and ethanol story goes like this: direct market intervention overrides market forces. Markets undergo dramatic change. Intervention establishes vested interests. Rent-seeking blocks adjustment to market change. Economic objectives become blurred behind political objectives. Opportunities go begging. Industry profitability suffers. And national income is forgone. The authors use a simple economic model of the Brazilian sugarcane sector and policy interventions to measure the costs of existing policies and to develop better policies. Brazil is an efficient producer of sugar, but policy intervention has caused: (a) underproduction of sugar cane (too much ethanol, not enough sugar); (b) missed opportunities to market ethanol in high-value uses (as an octane enhancer and clean fuel); (c)missed opportunities to make the world sugar market more competitive. Adopting more market-based policies could be worth billions of additional dollars annually to Brazil.Environmental Economics&Policies,Crops&Crop Management Systems,Economic Theory&Research,Transport and Environment,Access to Markets
Separability of drag and thrust in undulatory animals and machines
For nearly a century, researchers have tried to understand the swimming of
aquatic animals in terms of a balance between the forward thrust from swimming
movements and drag on the body. Prior approaches have failed to provide a
separation of these two forces for undulatory swimmers such as lamprey and
eels, where most parts of the body are simultaneously generating drag and
thrust. We nonetheless show that this separation is possible, and delineate its
fundamental basis in undulatory swimmers. Our approach unifies a vast diversity
of undulatory aquatic animals (anguilliform, sub-carangiform, gymnotiform, bal-
istiform, rajiform) and provides design principles for highly agile bioinspired
underwater vehicles. This approach has practical utility within biology as well
as engineering. It is a predictive tool for use in understanding the role of
the mechanics of movement in the evolutionary emergence of morphological
features relating to locomotion. For example, we demonstrate that the
drag-thrust separation framework helps to predict the observed height of the
ribbon fin of electric knifefish, a diverse group of neotropical fishes which
are an important model system in sensory neurobiology. We also show how
drag-thrust separation leads to models that can predict the swimming velocity
of an organism or a robotic vehicle.Comment: 41 pages, 13 figures, 4 table
Swimming Against the Tide
An Analysis of Private Sector Development Issues in Small Economies
This book examines the underlying factors that determine the environment for investment and growth in small economies, focussing on those in the Pacific.The private sector can flourish and create employment opportunities only if the environment in which it operates is conducive to business. Governments can often create an environment that increases the costs of doing business, reduces profits, and discourages dynamism and entrepreneurship. These issues include
• fostering financial sector development for credit to be more readily available for business;
• clarifying land rights and modifying them with respect to cultural preservation and the development of land
markets;
• reducing the role of the state in the economies of the region;
• revamping the regulatory regimes for the business environment to be less constrained and monopolies more prudently regulated;
• focusing on the assistance of small-scale rural enterprises.
With concerted efforts, governments can ensure the resolution of these critical issues. However, doing so requires considerable time and great effort. Nevertheless, now is a perfect time to start the process. Strategies for
change should focus on what causes the low rates of return on capital as well as the constraints to business startup and development
Abundance of a chlorophyll a precursor and the oxidation product hydroxychlorophyll a during seasonal phytoplankton community progression in the Western English Channel
This study presents the first in-situ measurements of the chlorophyll a oxidation product, hydroxychlorophyll a as well as the chlorophyll a precursor, chlorophyll aP276 conducted over an annual cycle. Chlorophyll a oxidation products, such as hydroxychlorophyll a may be associated with the decline of algal populations and can act as an initial step in the degradation of chlorophyll a into products which can be found in the geochemical record, important for studying past climate change events. Here, hydroxychlorophyll a and chlorophyll aP276 were measured at the long-term monitoring station L4, Western Channel Observatory (UK, www.westernchannelobservatory.org) over an annual cycle (2012). Weekly measurements of phytoplankton species composition and abundance enabled detailed analysis of possible sources of hydroxychlorophyll a. Dinoflagellates, 2 diatom species, the prymnesiophyte Phaeocystis spp. and the coccolithophorid Emiliania huxleyi were all associated with hydroxychlorophyll a occurrence. However, during alternate peaks in abundance of the diatoms, no association with hydroxychlorophyll a occurred, indicating that the oxidation of chlorophyll a was dependant not only on species but also on additional factors such as the mode of mortality, growth limiting factor (i.e. nutrient concentration) or phenotypic plasticity. Surface sediment samples contained 10 times more hydroxychlorophyll a (relative to chlorophyll a) than pelagic particulate samples, indicating that more chlorophyll a oxidation occurred during sedimentation or at the sediment-water interface, than in the pelagic environment. In addition, chlorophyll aP276 correlated with chl-a concentration, thus supporting its assignment as a chl-a precursor
Garden and landscape-scale correlates of moths of differing conservation status: significant effects of urbanization and habitat diversity
Moths are abundant and ubiquitous in vegetated terrestrial environments and are pollinators, important herbivores of wild plants, and food for birds, bats and rodents. In recent years, many once abundant and widespread species have shown sharp declines that have been cited by some as indicative of a widespread insect biodiversity crisis. Likely causes of these declines include agricultural intensification, light pollution, climate change, and urbanization; however, the real underlying cause(s) is still open to conjecture. We used data collected from the citizen science Garden Moth Scheme (GMS) to explore the spatial association between the abundance of 195 widespread British species of moth, and garden habitat and landscape features, to see if spatial habitat and landscape associations varied for species of differing conservation status. We found that associations with habitat and landscape composition were species-specific, but that there were consistent trends in species richness and total moth abundance. Gardens with more diverse and extensive microhabitats were associated with higher species richness and moth abundance; gardens near to the coast were associated with higher richness and moth abundance; and gardens in more urbanized locations were associated with lower species richness and moth abundance. The same trends were also found for species classified as increasing, declining and vulnerable under IUCN (World Conservation Union) criteria
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A national-scale assessment of climate change impacts on species: assessing the balance of risks and opportunities for multiple taxa
It is important for conservationists to be able to assess the risks that climate change poses to species, in order to inform decision making. Using standardised and repeatable methods, we present a national-scale assessment of the risks of range loss and opportunities for range expansion, that climate change could pose for over 3,000 plants and animals that occur in England. A basic risk assessment that compared projected future changes in potential range with recently observed changes classified 21% of species as being at high risk and 6% at medium risk of range loss under a B1 climate change scenario. A greater number of species were classified as having a medium (16%) or high (38%) opportunity to potentially expand their distribution. A more comprehensive assessment, incorporating additional ecological information, including potentially confounding and exacerbating factors, was applied to 402 species, of which 35 % were at risk of range loss and 42 % may expand their range extent. This study covers a temperate region with a significant proportion of species at their poleward range limit. The balance of risks and opportunities from climate change may be different elsewhere. The outcome of both risk assessments varied between taxonomic groups, with bryophytes and vascular plants containing the greatest proportion of species at risk from climate change. Upland habitats contained more species at risk than other habitats. Whilst the overall pattern was clear, confidence was generally low for individual assessments, with the exception of well-studied taxa such as birds. In response to climate change, nature conservation needs to plan for changing species distributions and increasing uncertainty of the future
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