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Monitoring of air quality before the Olympic Games Rio 2016 Anais da ABC (AABC)
VENTURA,LUCIANA M.B.; RAMOS,MICHELLE B.; SANTOS,JÉSSICA O.; GIODA,ADRIANA.
For the accomplishment of Olympic and Paralympic Games in Rio de Janeiro city (Rio 2016), the government of the Rio de Janeiro state has undertaken to monitor air quality before and during the events. In Beijing, China, and Athens, Greece, the air quality was monitored in Olympic venues in order to evaluate the athletes’ performance in relation to the environment in which they were exposed. This study has the same proposal to Rio de Janeiro, Brazil. The air quality scenario of the three previous years (2013, 2014, 2015) of Rio 2016 was considered. Coarse (PM10) and fine (PM2.5) particles and O3 were monitored continuously on the stations located near to competition venues, as required by International Olympic Committee (IOC). The levels registered ranged...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Air quality; PM10; PM2.5; O3; Olympic Games.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100401
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Issues, impacts, and prospects of the first transgenic crops tolerant to a herbicide. The case of glyphosate-tolerant soybean in the USA AgEcon
Bonny, Sylvie.
IAAE 2009 International Conference
Tipo: Conference Paper or Presentation Palavras-chave: Genetically modified crop; GMO; Biotechnology; Agro-economic impact; Environmental impact; Sustainability; Soybean; Pesticide; Weed; Prospects; Herbicide; Glyphosate; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q55; O3; O13; O51.
Ano: 2009 URL: http://purl.umn.edu/51449
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Economics of Biofortification AgEcon
Qaim, Matin; Stein, Alexander J.; Meenakshi, J.V..
Micronutrient malnutrition affects billions of people world-wide, causing serious health problems. Different micronutrient interventions are currently being used, but their overall coverage is relatively limited. Biofortification – that is, breeding staple food crops for higher micronutrient contents – has been proposed as a new agriculture-based approach. Yet, as biofortified crops are still under development, relatively little is known about their economic impacts and wider ramifications. In this article, the main factors that will influence their future success are discussed, and a methodology for economic impact assessment is presented, combining agricultural, nutrition, and health aspects. Ex ante studies from India and other developing countries...
Tipo: Conference Paper or Presentation Palavras-chave: Micronutrient malnutrition; Public health; Biofortification; Agricultural technology; Impact analysis; Developing countries; Food Consumption/Nutrition/Food Safety; I1; I3; O1; O3; Q1.
Ano: 2006 URL: http://purl.umn.edu/25584
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Light Duty Vehicle Transportation and Global Climate Policy: The Importance of Electric Drive Vehicles AgEcon
Bosetti, Valentina; Longden, Thomas.
With a focus on establishing whether climate targets can be met under different personal transport scenarios we introduce a transport sector representing the use and profile of light domestic vehicles (LDVs) into the integrated assessment model WITCH. In doing so we develop long term projections of light domestic vehicle use and define potential synergies between innovation in the transportation sector and the energy sector. By modelling the demand for LDVs, the use of fuels, and the types of vehicles introduced we can analyse the potential impacts on the whole economy. We find that with large increases in the use of vehicles in many regions around the globe, the electrification of LDVs is important in achieving cost effective climate targets and...
Tipo: Working Paper Palavras-chave: Light Duty Vehicles; Transportation; Climate Change Policy; Electric Drive Vehicles; Research and Development; Resource /Energy Economics and Policy; Q54; R41; O3.
Ano: 2012 URL: http://purl.umn.edu/121948
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JOINT ADOPTION OF MULTIPLE TECHNOLOGIES: A DUAL, LATENT DEMAND APPROACH AgEcon
Lichtenberg, Erik; Strand, Ivar E., Jr..
Latent demand models can be used to overcome computational difficulties that frequently hamper empirical evaluation of relatedness in the adoption of multiple technologies. This paper develops and applies such an approach to a case involving agricultural soil and water conservation. The results indicate both complementarity and substitution. Own-price elasticities of demand for all technologies and cross-price elasticities of demand for related technologies are substantial. The results are used to derive implications for the design and implementation of cost sharing programs, which have been one of the primary policies used to address nonpoint source agricultural water pollution problems.
Tipo: Working or Discussion Paper Palavras-chave: Demand and Price Analysis; Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies; O3; Q1; Q2.
Ano: 2000 URL: http://purl.umn.edu/28566
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The Role of R&D and Technology Diffusion in Climate Change Mitigation: New Perspectives Using the Witch Model AgEcon
Bosetti, Valentina; Carraro, Carlo; Duval, Romain; Sgobbi, Alessandra; Tavoni, Massimo.
This paper uses the WITCH model, a computable general equilibrium model with endogenous technological change, to explore the impact of various climate policies on energy technology choices and the costs of stabilising greenhouse gas concentrations. Current and future expected carbon prices appear to have powerful effects on R&D spending and clean technology diffusion. Their impact on stabilisation costs depends on the nature of R&D: R&D targeted at incremental energy efficiency improvements has only limited effects, but R&D focused on the emergence of major new low-carbon technologies could lower costs drastically if successful – especially in the non-electricity sector, where such low-carbon options are scarce today. With emissions coming...
Tipo: Working or Discussion Paper Palavras-chave: Climate policy; Energy R&D; Fund; Stabilisation costs; Environmental Economics and Policy; H0; H2; H3; H4; O3; Q32; Q43; Q54.
Ano: 2009 URL: http://purl.umn.edu/50363
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Impact of local public goods on agricultural productivity growth in the U.S. AgEcon
Sun, Ling; Ball, V. Eldon; Fulginiti, Lilyan E.; Plastina, Alejandro S..
In this paper we revisit the issue on the impact of public R&D expenditure on US agricultural productivity growth. We estimate a dual cost function using a state-by-year panel data set. We construct the potential R&D “spillins” based on both geographical location and production mix. We also examine the role of the extension service, transportation network, and human capital in the process of technology dissemination. The results indicate that higher levels of local public goods, R&D spillins, extension activities, and an intensive transportation network decrease costs. The contributions to agricultural productivity from all series of R&D spillins are positive even though the social rate of return may differ.
Tipo: Conference Paper or Presentation Palavras-chave: Productivity; Public R&D expenditure; Cost function; Extension services; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; O3; O4.
Ano: 2009 URL: http://purl.umn.edu/49333
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Livestock based livelihoods and pathways out of poverty: the case of smallholder farmers in Bangladesh AgEcon
Akter, Shaheen.
This paper evaluates livelihoods of smallholder livestock farmers who were beneficiaries of a poverty alleviation programme involving longer term intervention towards building the strength of stakeholders such as government department, NGOs, village organisations and women beneficiaries. Data are drawn from a survey of 400 women farmers in 2006 and 2008. These farmers have been the members of BRAC, a well known NGO in Bangladesh. Poverty profiles, transition matrices and regression analysis drawn from asset-base framework are used to analyze data. A number of key questions related to poverty transition through livestock based activities, heterogeneity in livelihood choice and its impact on household welfare, extent of poverty reduction using different...
Tipo: Conference Paper or Presentation Palavras-chave: Poverty; Women and livestock; Livelihood Strategies; Asset-base Framework; Bangladesh; Food Security and Poverty; O1; O3; Q13; Q55.
Ano: 2011 URL: http://purl.umn.edu/108935
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Taking a New Look at Empirical Models of Adoption: Average Treatment Effect Estimation of Adoption Rates and their Determinants AgEcon
Diagne, Aliou.
This paper shows that the observed sample adoption rate does not consistently estimate the population adoption rate even if the sample is random. It is proved that instead the sample adoption rate is a consistent estimate of the population joint exposure and adoption rate, which does not inform about adoption per se. Likewise, it is shown that a model of adoption with observed adoption outcome as dependent variable and where exposure to the technology is not observed and controlled for cannot yield consistent estimates of the determinants of adoption. Such model can at best provide consistent estimates of the effects of the included explanatory variables on joint exposure and adoption. Even for that to be possible, the model must be explicitly specified as...
Tipo: Conference Paper or Presentation Palavras-chave: Technology Adoption; Rice; NERICA; West Africa; Average Treatment Effect; Research and Development/Tech Change/Emerging Technologies; C8; O3; Q12; Q16; Q55.
Ano: 2006 URL: http://purl.umn.edu/25623
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The question of “evidence” in the emergence of evidence-based or evidence-aware policies in agriculture AgEcon
Laurent, Catherine E.; Trouve, Aurelie.
Evidence-based or evidence-aware policy approaches are used in many different sectors (health, education, etc.). These approaches are less common in agriculture but are gradually emerging. Analysis of debates surrounding this trend sheds light on the particular nature of the difficulties faced by public decision-makers who are willing to use available scientific knowledge. After examining certain misunderstandings which arise in the international debate over evidence-based policy approaches, this paper addresses two specific issues: (i) the problems of competing evidence for using knowledge in the design of public policies and (ii) the potential role of rationalization tools in a possible "depoliticisation" of public decision-making.
Tipo: Conference Paper or Presentation Palavras-chave: Knowledge; Agriculture; Policy; Evidence; Agricultural and Food Policy; B29; D8; Q01; O3.
Ano: 2011 URL: http://purl.umn.edu/99833
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Is Monsanto Leaving Money on the Table? Monopoly Pricing and Bt Cotton Value with Heterogeneous Adopters AgEcon
Oehmke, James F.; Wolf, Christopher A..
We examine the allocation of technology rents between a price-setting, innovating monopolist and heterogeneous technology adopters. A model of monopoly pricing in the presence of heterogeneous adopters is used to examine conditions under which greater producer (farmer) heterogeneity leads to greater producer benefit from innovation in non-competitive markets. An application to Bt cotton determines the profit-maximizing price of Bt cotton seed and reveals that Monsanto and Delta and Pine Land are indeed leaving money on the table in the form of unexploited profit opportunities. However, we estimate that the presence of heterogeneous adopters explains over 80% of the rents that accrue to the farmers.
Tipo: Journal Article Palavras-chave: Biotechnology; Bt cotton; Heterogeneous adopters; Innovation; Monopoly pricing; Technology; Valuation distribution; L1; O3; Q1.
Ano: 2004 URL: http://purl.umn.edu/43469
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Winners and Losers: Formula versus Competitive Funding of Agricultural Research AgEcon
Huffman, Wallace E.; Norton, George W.; Traxler, Greg; Frisvold, George B.; Foltz, Jeremy D..
Tipo: Journal Article Palavras-chave: Research and Development/Tech Change/Emerging Technologies; O3; O4; Q16.
Ano: 2006 URL: http://purl.umn.edu/94367
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Measuring the Contribution to the Economy of Investments in Renewable Energy: Estimates of Future Consumer Gains AgEcon
MacAuley, Molly K.; Shih, Jhih-Shyang; Aronow, Emily; Austin, David H.; Bath, Tom; Darmstadter, Joel.
In this paper we develop a cost index-based measure of the expected consumer welfare gains from innovation in electricity generation technologies. To illustrate our approach, we estimate how much better off consumers would be from 2000 to 2020 as renewable energy technologies continue to be improved and gradually adopted, compared with a counterfactual scenario that allows for continual improvement of conventional technology. We proceed from the position that the role and prospects of renewable energy are best assessed within a market setting that considers competing energy technologies and sources. We evaluate five renewable energy technologies used to generate electricity: solar photovoltaics, solar thermal, geothermal, wind, and biomass. For each, we...
Tipo: Working or Discussion Paper Palavras-chave: Energy economics; Technical change; Resource /Energy Economics and Policy; Q4; O3.
Ano: 2002 URL: http://purl.umn.edu/10588
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Double Transplanting: Economic Assessment of an Indigenous Technology for Submergence Avoidance in the Flood-Prone Rice Environment in Bangladesh AgEcon
Azad, Md Abdus Samad; Hossain, Mahabub.
In the northern part of Bangladesh a large proportion of land is medium and low-lying which are subjected to the risk of flooding from heavy rains during the month of August and September. Consecutive days of heavy rains after the crop establishment causes flash floods leading to death of seedlings and additional costs for re-transplanting. In response to this environmental problem, farmers practice a system of double transplanting of rice, locally known as Bolon to avoid crop failure from submergence. One-month old seedlings are transferred to another field with dense transplanting, and then re-transplanted to the main after the risk of flash flood is over. Scientists argue that the system would have lower yield and higher costs, thereby lower profits...
Tipo: Conference Paper or Presentation Palavras-chave: Crop establishment method; Productivity; Profitability; Technical efficiency; Crop Production/Industries; O3; Q16; Q18; Q19; Q55.
Ano: 2006 URL: http://purl.umn.edu/25448
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Measuring Public Agricultural Research Capital and Its Contribution to State Agricultural Productivity AgEcon
Huffman, Wallace E..
A methodology for measuring public agricultural research capital is developed and described for the first time, new public agricultural research capital measures for each of the 48 contiguous US states, 1970-1999, are presented, and a new econometric analysis of the contribution of public agricultural research capital to state agricultural productivity is reported. Public agricultural research capital across the states is shown to have five different growth patterns, only one of which is at a constant rate. New TFP results show that public agricultural research capital contributes significantly to agricultural productivity and is larger than previous estimates. Intrastate and spillin public agricultural research capital are shown to be complementary, but...
Tipo: Working or Discussion Paper Palavras-chave: Research capital; Agriculture; States; Measurement; Productivity decomposition; TFP; Agribusiness; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; O3; O4; Q16; Q10.
Ano: 2009 URL: http://purl.umn.edu/55845
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Delivering Seeds of 'Orphan' Crops: The Case Studies of Potato and Groundnut in India AgEcon
Pal, Suresh; Singh, Harbir; Mathur, Prasoon.
This paper examines the performance of the Indian seed system in the context of high volume, low value seed, using the case studies of potato and groundnut. In theory, public sector should be able to address seed needs of farmers growing these crops. However, the ability of the public sector is constrained by a number of institutional and technical factors, and farmers largely depend upon traditional sources of seed. The traditional sources meet more than two-thirds of the total seed demand , and the rest is met by the formal seed system, mainly public seed agencies. Most of the farmers buy fresh seed for quality reasons, and only 12-15 percent farmers purchase seed to change variety. In potato, technological innovation provided options to enhance...
Tipo: Conference Paper or Presentation Palavras-chave: Seed system; Seed sources; Seed saving; Seed quality; Supply chain; India; Crop Production/Industries; O3; Q13; Q16.
Ano: 2006 URL: http://purl.umn.edu/25444
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Nuclear versus Coal plus CCS: A Comparison of Two Competitive Base-load Climate Control Options AgEcon
Tavoni, Massimo; van der Zwaan, Bob.
In this paper we analyze the relative importance and mutual behavior of two competing base-load electricity generation options that each are capable of contributing significantly to the abatement of global CO2 emissions: nuclear energy and coal-based power production complemented with CO2 capture and storage (CCS). We also investigate how, in scenarios from an integrated assessment model that simulates the economics of a climate-constrained world, the prospects for nuclear energy would change if exogenous limitations on the spread of nuclear technology were relaxed. Using the climate change economics model WITCH we find that until 2050 the resulting growth rates of nuclear electricity generation capacity become comparable to historical rates observed...
Tipo: Working or Discussion Paper Palavras-chave: Economic Competition; Electricity Sector; Nuclear Power; Coal Power; CCS; Renewables; Climate Policy; Research and Development/Tech Change/Emerging Technologies; D8; D9; H0; O3; O4; Q4; Q5.
Ano: 2009 URL: http://purl.umn.edu/55327
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Poverty transition through targeted programme: the case of Bangladesh Poultry Model AgEcon
Akter, Shaheen; Farrington, John.
Poverty transition through a capacity development programme called the Bangladesh Poultry Model is assessed using self-assessment dimension in a quasi experiment framework. Current poverty situation is compared with money metric measure. The programme involves longer term intervention towards building the strength of stakeholders such as government department, NGOs, village organisations and women beneficiaries. A number of key questions related to poverty transition through poultry based activities, heterogeneity in livelihood choice and its impact on household welfare, extent of poverty reduction etc. are answered for policy recommendations. Data are drawn from a survey of 400 beneficiary households in 2006; about 50% of them are survivors in the...
Tipo: Conference Paper or Presentation Palavras-chave: Bangladesh; Poultry; Poverty; Asset-base Framework; O3; Q16.
Ano: 2008 URL: http://purl.umn.edu/42306
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GM food technology abroad and its implications for Australia and New Zealand AgEcon
Anderson, Kym; Jackson, Lee Ann.
The potential economic benefits from agricultural biotechnology adoption by ANZ need to be weighed against any likely loss of market access abroad for crops that may contain genetically modified (GM) organisms. This paper uses the global GTAP model to estimate effects of other countries' GM policies without and with ANZ farmers adopting GM varieties of various grains and oilseeds. The benefits to ANZ from adopting GM crops under a variety of scenarios are positive even in the presence of the ban on imports from GM-adopting countries by the EU (but not if East Asia also applied such a ban).
Tipo: Conference Paper or Presentation Palavras-chave: Biotechnology; GMOs; Regulation; Trade policy; Computable general equilibrium; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; C68; D58; F13; O3; Q17; Q18.
Ano: 2004 URL: http://purl.umn.edu/58365
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GROWTH THEORY AND ACCOUNTING FOR GROWTH OF THE TAIWANESE ECONOMY AgEcon
Lin, Pei-Chien; Roe, Terry L..
A growth accounting and an econometric exercise are used to provide insights into the evolution of the Taiwanese economy over the period 1966-96. The approach links the GDP function of a multiple sector neoclassical growth model to growth accounting and, subsequently to the estimation of the parameters of this function. The growth accounting results show that the contribution of total factor productivity (TFP) to growth in GDP averaged about 32 percent over the period, and this contribution increased as the economy approached its long-run equilibrium during the decade of the 1980s, with evidence of some departure during 1991-96. Growth in TFP increased output growth in industry and services while growth in skilled labor benefited all sectors. Growth in...
Tipo: Working or Discussion Paper Palavras-chave: Economic growth; Productivity; Technological change; International Development; Productivity Analysis; O3; O4; O5.
Ano: 1999 URL: http://purl.umn.edu/12968
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