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Registros recuperados: 137
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A Life-Cycle Perspective on Governing Cooperative Enterprises in Agriculture AgEcon
Hueth, Brent; Reynolds, Anne.
Tipo: Journal Article Palavras-chave: Cooperatives; Governance; Life Cycle; Competition; Finance; Agribusiness; Q12; Q13; Q14.
Ano: 2011 URL: http://purl.umn.edu/117411
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A PRECARIEDADE DO TRANSPORTE RODOVIÁRIO BRASILEIRO PARA O ESCOAMENTO DA PRODUÇÃO DE SOJA DO CENTRO-OESTE: SITUAÇÃO E PERSPECTIVAS AgEcon
Capacle, Vivian Helena; Ramos, Pedro.
A região Centro-Oeste do país se destaca como um pólo produtor de soja e essa produção é escoada, em sua maioria, por meio de rodovias. Pela crise fiscal do Estado, a partir dos anos 80, a malha rodoviária brasileira perde participação nos recursos públicos para investimentos em sua ampliação, conservação e restauração e, essa escassez de investimentos nas rodovias tem reflexos sobre a competitividade internacional da soja dos cerrados, uma vez que o principal modal utilizado para o escoamento dessa produção para os portos das Regiões Sul e Sudeste é o modal rodoviário cujas vias estão em estado precário de conservação, com destaque para trechos das rodovias BR 163 e BR 364 que são vias importantes na região do Centro-Oeste. Por conta disso, 25% da receita...
Tipo: Conference Paper or Presentation Palavras-chave: Infra-Estrutura de Transportes; Rodovias; Soja; Competitividade; Transportation Infrastructure; Roads; Soy Bean; Competition; Agribusiness.
Ano: 2008 URL: http://purl.umn.edu/109376
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Alexandrium minutum growth controlled by phosphorus An applied model ArchiMer
Chapelle, Annie; Labry, Claire; Sourisseau, Marc; Lebreton, Carole; Youenou, Agnes; Crassous, Marie-pierre.
Toxic algae are a worldwide problem threatening aquaculture public health and tourism Alexandrium a toxic dinoflagellate proliferates in Northwest France estuaries (i e the Penze estuary) causing Paralytic Shellfish Poisoning events Vegetative growth and in particular the role of nutrient uptake and growth rate are crucial parameters to understand toxic blooms With the goal of modelling in situ Alexandrium blooms related to environmental parameters we first try to calibrate a zero-dimensional box model of Alexandrium growth This work focuses on phosphorus nutrition Our objective is to calibrate Alexandrium minutum as well as Heterocapsa triquetra (a non-toxic dinoflagellate) growth under different rates of phosphorus supply other factors being optimal and...
Tipo: Text Palavras-chave: Toxic algal blooms; Alexandrium; Phosphorus uptake; Models; Competition; Northwest France.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00018/12901/9905.pdf
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Análisis de la red de valor del mango Ataulfo en la subcuenca del Río Atoyac, estado de Guerrero. Colegio de Postgraduados
Embris Jiménez, Omar.
El presente trabajo tuvo como objetivo definir las causas que existen en torno al problema de la red de valor del mango Ataulfo en la subcuenca de Atoyac, así como identificar las alternativas de aprovechamiento de las ventajas competitivas propias del territorio y del potencial productivo que permitan generar ingresos a la población. Aunque el mango Ataulfo es líder en rendimiento y representa los mayores ingresos para los productores, presenta bajo nivel competitivo, debido a: altos costos de producción y postcosecha, baja calidad del producto, deficiente organización, escasez de capital de trabajo, escasez de asistencia técnica y capacitación, y poco vínculo entre los agentes: productor, empacador y cliente. Para revertir este fenómeno, es necesario que...
Palavras-chave: Comercialización; Competitividad; Mango ataulfo; Red de valor; Ataulfo mango; Competition; Marketing; Value network; EDAR; Desarrollo Sostenible de Zonas Indígenas; Maestría Tecnológica.
Ano: 2011 URL: http://hdl.handle.net/10521/654
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Analogous Products and Food Quality Products: Two Poles of the Competition AgEcon
Bošková, Iveta.
The globalisation of processing industry and the consolidation of the international retail trade, together with the increase of imports after the EU access, supported the competition hot up and saturation of domestic food market. Both food processors and food retailers are exposed to increasing competition. In order to maintenance on the market they are increasingly pressed to minimize their costs and/or to accomplish higher prices for products with competitive advantage. Besides of that all participants of the agri-food chain are pressed to intensify marketing support of their goods. Aiming to reduce the costs, some of processors choose the way by the substitution of part of the input material by another, cheaper one. On the other hand, the offer of...
Tipo: Conference Paper or Presentation Palavras-chave: Competition; Marketing; Quality; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2007 URL: http://purl.umn.edu/7880
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Antidumping and Market Power in the Agriculture Sector, with a Special Case Study of the Fresh Tomato Industry AgEcon
Baylis, Katherine R..
In this article we highlight the anticompetitive nature of antidumping (AD) legislation. Antidumping legislation was set up to protect domestic firms from predatory pricing by foreign firms. We argue that protecting highly concentrated industries drastically reduces competition at home. In cases where the industry consists only of one or two firms, import restriction may breed monopolies at the expense of domestic consumers. This article looks at cases filed by the agriculture sector, and at the market concentration of industries in this sector, to illustrate the above possibility. We study the case of fresh tomatoes in detail to further demonstrate the anticompetitive nature of AD legislation. We show the effect of AD legislation on imports, as well as...
Tipo: Journal Article Palavras-chave: Agriculture; Antidumping legislation; Competition; Fresh tomato industry; Crop Production/Industries; International Relations/Trade.
Ano: 2008 URL: http://purl.umn.edu/6320
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Article 82 EC – The Problems and The Solution AgEcon
Lang, John T..
The Commission's Guidance paper on exclusionary abuse under Article 82 EC is open to three fundamental criticisms. First, it leads to less legal certainty, because the rules suggested are vague and imprecise, because dominant companies will not have the information needed to apply them, and because the Commission is trying to change the law, which it has no power to do. Second, it would lead to some anticompetitive effects, because in practice it discourages price competition, by discouraging individualised price negotiations and retroactive rebates, and by suggesting that the Commission will protect not-yet-as-efficient competitors from price competition. Third, it leads to too many "false positives", i.e., findings of exclusionary abuse that are not...
Tipo: Working or Discussion Paper Palavras-chave: Article 82EC; Competition; Abuse; Institutional and Behavioral Economics; K21.
Ano: 2009 URL: http://purl.umn.edu/54282
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Aspectos da competicao entre plantas com especial atencao ao algodoeiro-Gossypium hirsutum L. Infoteca-e
BELTRÃO, N. E. de M..
A competicao e suas modalidades; Informes da pesquisa sobre competicao na cultura algodoeira no centro-sul do Brasil e no mundo; Informes da pesquisa sobre competicao na cultura algodoeira no nordeste brasileiro.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Algodao herbaceo; Arboreo; Erva daninha; Competicao; Gossypium hirsutum L; Brasil; Nordeste; Weed; Competition; Perennial cotton; Annual cotton.
Ano: 1977 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/262412
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Assessing Competition in the U.S. Beef Packing Industry AgEcon
Ward, Clement E..
Tipo: Journal Article Palavras-chave: Beef; Cattle; Competition; Concentration; Market structure; Meatpacking; Pricing; Agribusiness; Livestock Production/Industries; L13; Q13.
Ano: 2010 URL: http://purl.umn.edu/94758
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Assessing Oligopoly and Oligopsony Power in the U.S. Catfish Industry AgEcon
Bouras, David; Engle, Carole R..
This paper addresses the issue of competition in the U.S. catfish industry. To this end, a conjectural variation oligopolistic model was developed. The model was estimated econometrically using the Generalized Method of Moments (GMM) procedure. Chi-square analysis implied that catfish processors do not exert market power over farmers or over consumers. The conjectural elasticity was estimated to be 0.073, the oligopoly power index 0.28, and the oligopsony power index 0.68, and none of these values were statistically significant. The results support competitive behavior of the catfish processing sector.
Tipo: Journal Article Palavras-chave: Competition; Conjectural variation model; U.S. catfish industry; Agribusiness; Livestock Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/62284
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Assessing the Competitive Interaction Between Private Labels and National Brands AgEcon
Cotterill, Ronald W.; Putsis, William P., Jr.; Dhar, Ravi.
In contrast to single-equation cross-sectional studies of private label share, developing a complete understanding of the nature of the competitive interaction between national brands and private labels requires an understanding of the determinants of both demand and strategic pricing decisions by firms. Consequently, we estimate a simultaneous system of share and price for private labels and national brands. From the empirical results, two measures of market response are derived. The unilateral demand elasticity measures the pure “own” demand response, while the residual (or “total”) elasticity also captures the impact of competitive price reaction (Baker and Bresnahan 1985). When taken together, these provide important strategic insights into the pricing...
Tipo: Working or Discussion Paper Palavras-chave: Competition; Competitive strategy; Private labels; Pricing; Demand and Price Analysis.
Ano: 1999 URL: http://purl.umn.edu/25177
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Avaliação de cultivares de caupi para o consórcio com algodoeiro herbáceo. Repositório Alice
BELTRAO, N. E. de M.; SANTANA, J. C. F. de; CRISOSTOMO, J. R.; ARAUJO, J. P. P. de; SOUSA, R. P. de..
Visando a avaliação de cultivares de caupi (Vigna unguiculata (L.) Walp.) com relação as características de produção, qualidade de grão e força de competição no consorciamento com o algodoeiro herbáceo (Gossypium hirsutum L., r. latifolium Hutch.), um experimento foi realizado no município de Gurinhem, Paraíba, em 1983. Testaram-se doze cultivares de caupi de hábitos de crescimento e ciclos diferentes, numa modalidade de consorcio em que se utilizaram fileiras duplas da leguminosa, espaçadas entre si de 0,30 cm e distanciadas das fileiras de algodão herbáceo de 0,35 cm, com uma densidade de cinco plantas por metro de fileira, objetivando maior pressão de competição do caupi sobre a malvacea. O algodão foi plantado no espaçamento de 1,0 m x 0,2m. Apenas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gossypium hirsutum; Vigna unguiculata; Qualidade de fibra; Competicao; Lint quality; Competition.
Ano: 1986 URL: http://www.alice.cnptia.embrapa.br/handle/doc/953863
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Avaliacao de germoplasma de batata doce Ipomoea batatas (L.) Lam. visando resistencia a insetos de solo. Repositório Alice
FRANÇA, F. H.; MIRANDA, J. E. C.; FERREIRA, P. E.; MALUF, W. R.; BARBOSA, S..
bitstream/item/191691/1/digitalizar0144.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Batata-doce; Brasilia; Distrito Federal; Brasil; Resistance; Pest insects; Competition; Cerrado; Competição de Variedade; Germoplasma; Inseto; Ipomoea Batatas; Praga; Raiz; Resistência; Solo; Brazil; Germplasm; Roots; Soil; Sweet potatoes; Varieties.
Ano: 1983 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/765515
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Avaliacao de germoplasma de batata (Solanum tuberosum L.) quanto a susceptibilidade ao ataque de Liriomyza huidobrensis Blanchard. Repositório Alice
BARBOSA, S.; FRANCA, F. H.; PUENTE CUIDAD, F. de la..
bitstream/item/191703/1/digitalizar0142.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Brasilia; Distrito Federal; Brasil; Pest insects; Leaf miner; Competition; Batata; Cerrado; Competição de Variedade; Germoplasma; Inseto; Larva Minadora; Liriomyza Huidobrensis; Praga; Solanum Tuberosum; Brazil; Germplasm; Potatoes; Varieties.
Ano: 1983 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/765513
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Az élelmiszerlánc szereplői közötti kapcsolatok hazánkban AgEcon
Popp, Jozsef; Juhasz, Aniko.
Hazánkban a válság miatt a keresleti oldalról növekedni képtelen piacon a kiskereskedelmi szereplők a kötelező éves növekedést immár csak a piac újraosztásával érhetik el, ami a kiskereskedők között kíméletlen – horizontális – versenyt eredményez. Ennek eszköze az alapvető termékek esetében a minél alacsonyabban tartott ár. Ezért a kereskedelmi láncok és beszállítóik kapcsolata vegyes képet mutat. A nagy, tőkeerős, elsősorban nemzetközi élelmiszer-feldolgozók és mezőgazdasági beszállítók számára még így is jövedelmező lehet a kereskedelmi láncok által biztosított széles körű piaci jelenlét. Ezzel szemben a hazai szinten nagy, de nem elég tőkeerős hazai beszállítók alkupozíciója rendkívül kényes, számukra még veszteség mellett is létkérdés a kereskedelmi...
Tipo: Article Palavras-chave: Élelmiszerlánc; Beszállítók; Vevői erő; Koncentráció; Verseny; Food supply chain; Food suppliers; Buyer power; Concentration; Competition; Agribusiness; International Relations/Trade; Marketing.
Ano: 2011 URL: http://purl.umn.edu/119886
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Biological interactions in the co-occurrence of Eichhornia azurea and free-floating macrophytes - DOI: 10.4025/actascibiolsci.v31i4.5577 Biological Sciences
Marques-Silva, Giuliani Grazyella; UEM; Thomaz, Sidinei Magela; UEM.
The dynamic of plant communities is strongly influenced by biological interactions. We studied the effects of Eichhornia azurea on the growth of the free-floating macrophytes Eichhornia crassipes, Salvinia minima, Salvinia auriculata and Limnobium laevigatum. The experiments were carried out in three lakes of the upper Paraná river floodplain. We used 0.5 m side squares where these species grew for 11 days (S. auriculata and L. laevigatum) and 17 days (E. crassipes and S. minima), in the presence and absence of E. azurea. There were no significant differences between the relative growth rates of macrophytes growing in the absence and presence of E. azurea. The relative interaction index showed the existence of competition between E. azurea and L....
Palavras-chave: 2.05.00.00-9 positive interactions; Free-floating macrophytes; Facilitation; Competition; Plant communities 2.05.00.00-9.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5577
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Can health warnings and nutritional information lower welfare? AgEcon
Perloff, Jeffrey M..
Tipo: Working or Discussion Paper Palavras-chave: Benefit-cost analysis; Competition; Health; Monopolies; Nutrition; Welfare economics; Food Security and Poverty; Food Consumption/Nutrition/Food Safety.
Ano: 1981 URL: http://purl.umn.edu/47006
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Characterization of food web structure of the upper continental slope of the Celtic Sea highlighting the trophic ecology of five deep-sea fishes ArchiMer
Kopp, Dorothee; Robert, Marianne; Pawlowski, Lionel.
In marine ecosystems, the study of trophic relationships has extensively benefited from the development of stable isotope analyses (SIA) as dietary tracers. SIA are particularly useful in elucidating the structure of deep sea food webs given the constraints involved in obtaining gut-content data from deep trawling. We used carbon and nitrogen stable isotope analyses and Stable Isotope Bayesian Ellipses in R (SIBER) and Stable Isotope Analysis in R (SIAR) routines, to determine the trophic ecology of five deep-sea fishes from the upper continental slope of the Celtic Sea. SIA made it possible to deduce some general tendencies in food-web structure and species trophic interactions and confirmed diet determined by gut-content analysis for the same species, in...
Tipo: Text Palavras-chave: Competition; Feeding habits; Mixing models; Stable isotope.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00410/52138/52940.pdf
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Coastal phytoplankton community dynamics and coexistence driven by intragroup density-dependence, light and hydrodynamics ArchiMer
Barraquand, F.; Picoche, C.; Maurer, Daniele; Carassou, L.; Auby, Isabelle.
Phytoplanktonic communities maintain a high diversity in a seemingly homogeneous environment, competing for the same set of resources. Many theories have been proposed to explain this coexistence despite likely competition, such as contrasted responses to temporal environmental variation. However, theory has developed at a faster pace than empirical evaluation using field data, which requires inferring drivers of community dynamics from observational time series. Here, we combine autoregressive models with a data set spanning more than 20 years of phytoplankton counts every two weeks, together with nutrients and physical variables. By comparing models dominated by nutrients or physical variables (hydrodynamics and climate), we first explore which abiotic...
Tipo: Text Palavras-chave: Competition; Diatoms; Dinoflagellates; Hydrodynamics; Interactions; MAR; Mutualism; Network; Population dynamics; Seasonality; Time series.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00461/57257/59285.pdf
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Coexistence of surface and cave amphipods in an ecotone environment Naturalis
Luštrik, R.; Turjak, M.; Kralj-Fišer, S.; Fišer, C..
Interspecific interactions between surface and subterranean species may be a key determinant for species distributions. Until now, the existence of competition (including predation) between these groups has not been tested. To assess the coexistence and potential role of interspecific interactions between surface Gammarus fossarum and subterranean Niphargus timavi, and to determine their micro distributions, we conducted a series of field and laboratory observations. We aimed to determine: (1) species substrate preference, (2) whether the presence of G. fossarum influences the habitat choice of N. timavi, and (3) possible predation effects on micro habitat choice of small juveniles. Throughout a small river in SW Slovenia, N. timavi was predominantly found...
Tipo: Article / Letter to the editor Palavras-chave: Amphipoda; Cannibalism; Competition; Ecotone; Microhabitat preference; Predation; 42.74.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/377199
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