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| Registros recuperados: 25 | |
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| Marchal, Emile; Petitgas, Pierre. |
| The gulf of Cariaco, Venezuela, is a rather isolated piece of coastal ocean where spatio-temporal variability has been measured. In 1986, three repeated surveys have been carried out in this gulf. The important differences in biomass estimates are attributed to sampling error only. The biological nature of this variability is studied. It is due to a high concentration of the biomass in a few schools and correlatively to the hit or the miss of these large schools, during the sampling. Structural information for predicting them is sought. Also, the number of schools per elementary sampling distance unit (ESDU) and the biomass in each school were measured by echointegration. It is found that there is no clear relation between these two variables. Thus their... |
| Tipo: Text |
Palavras-chave: Evaluation des stocks; Campagnes acoustiques; Précision; Stock assessment; Echo surveys; Reliability. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00190/30077/28565.pdf |
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| Ameryoun, Hamed; Schoefs, Franck; Barille, Laurent; Thomas, Yoann. |
| The present paper deals with the stochastic modeling of bio-colonization for the computation of stochastic hydrodynamic loading on jacket-type offshore structures. It relies on a multidisciplinary study gathering biological and physical research fields that accounts for uncertainties at all the levels. Indeed, bio-colonization of offshore structures is a complex phenomenon with two major but distinct domains: (i) marine biology, whose processes are modeled with biomathematics methods, and (ii) hydrodynamic processes. This paper aims to connect these two domains. It proposes a stochastic model for the marine organism's growth and then continues with transfers for the assessment of drag coefficient and forces probability density functions that account for... |
| Tipo: Text |
Palavras-chave: Marine growth; Biofouling; Wave loading; Stochastic modeling; Reliability; Jacket structures. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00605/71668/70107.pdf |
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| Padilha,Alessandro Haiduck; Cobuci,Jaime Araujo; Daltro,Darlene dos Santos; Braccini Neto,José. |
| Abstract The objective of this work was to verify the gain in reliability of estimated breeding values (EBVs), when random regression models are applied instead of conventional 305-day lactation models, using fat and protein yield records of Brazilian Holstein cattle for future genetic evaluations. Data set contained 262,426 test-day fat and protein yield records, and 30,228 fat and protein lactation records at 305 days from first lactation. Single trait random regression models using Legendre polynomials and single trait lactation models were applied. Heritability for 305-day yield from lactation models was 0.24 (fat) and 0.17 (protein), and from random regression models was 0.20 (fat) and 0.21 (protein). Spearman correlations of EBVs, between lactation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding value; Correlation; Legendre polynomials; Reliability. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016001101848 |
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| Carson, Richard T.; Hanemann, W. Michael; Kopp, Raymond J.; Krosnick, Jon A.; Mitchell, Robert C.; Presser, Stanley; Ruud, Paul A.; Smith, V. Kerry. |
| In 1992 the National Oceanic and Atmospheric Administration (NOAA) convened a panel of prominent social scientists to assess the reliability of natural resource damage estimates derived from contingent valuation (CV). The product of the panel's deliberations was a report that laid out a set of recommended guidelines for CV survey design, administration, and data analysis. This paper focuses on one of these guidelines -- the Panel's call for the "temporal averaging" of willingness-to-pay (WTP) responses obtained from CV surveys as one method for increasing their reliability. The panel suggested: "Time dependent measurement noise should be reduced by averaging across independently drawn samples taken at different points in time. A clear and substantial time... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Contingent valuation; Natural resource damages; Passive use; Exxon Valdez; Reliability; Environmental Economics and Policy; D60; D61; K32; Q28. |
| Ano: 1995 |
URL: http://purl.umn.edu/10580 |
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| Harris, Simon; Doak, Murray; Ford, Stuart; Bywater, Tony; Bright, John; Thorrold, Bruce S.. |
| The understanding of how allocation decisions can maximise the economic returns to the community from water for irrigation has received little attention, but is a significant issue for regional councils, those interested in water allocation policy development, and for irrigated farmers. There is a tradeoff between the amount of irrigated area and the reliability with which it can be undertaken. Overseas studies have generated a curve with optimum levels of allocation which maximise the economic return to the community from the resource. The study on which this paper is based used a single case study to model the individual and regional economic outcomes for four scenarios of water allocation, using daily time step simulation models of the hydrological,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Irrigation; Reliability; Regional economic impacts; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Environmental Economics and Policy; Farm Management; Financial Economics; Institutional and Behavioral Economics; Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/98516 |
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| Robison, Lindon J.; Schmid, A. Allan; Siles, Marcelo E.. |
| Social capital in the past two decades has emerged as a dominant paradigm in the various social science disciplines. However, its adoption by the different social science disciplines has led to multiple and often conflicting definitions of social capital. Some differences in the definition of social capital can be explained because scientists have included in the definition expressions of its possible uses, where it resides, and how its service capacity can be changed. This paper defends the social capital metaphor by pointing out that social capital has many important capital-like properties including service potential, durability, flexibility, substitutability, opportunities for decay (maintenance), reliability, ability to create other capital forms,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Social capital; Cultural capital; Human capital; Physical/financial capital; Service potential; Durability; Flexibility; Substitutability; Decay (maintenance); Reliability; Investment (disinvestment); Institutional and Behavioral Economics. |
| Ano: 1999 |
URL: http://purl.umn.edu/11649 |
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| Carson, Richard T.; Hanemann, W. Michael; Kopp, Raymond J.; Krosnick, Jon A.; Mitchell, Robert C.; Presser, Stanley; Ruud, Paul A.; Smith, V. Kerry; Conaway, Michael; Martin, Kerry. |
| In 1992 the National Oceanic and Atmospheric Administration (NOAA) convened a panel of prominent social scientists to assess the reliability of natural resource damage estimates derived from contingent valuation (CV). The product of the Panel's deliberations was a report that laid out a set of recommended guidelines for CV survey design, administration, and data analysis. One of the Panel's recommendations was that CV surveys should employ a referendum approach. This method describes a choice mechanism that asks each respondent how they would vote if faced with a particular program and the prospect of paying for the program through some means, such as higher taxes. The Panel also recommended that CV referendum questions which commonly use only "for" or... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Contingent valuation; Natural resource damages; Passive use; Exxon Valdez; Reliability; Environmental Economics and Policy; D60; D61; K32; Q28. |
| Ano: 1995 |
URL: http://purl.umn.edu/10865 |
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| BELLO, SEGUN RAPHAEL. |
| ABSTRACTAn investigation into the maintenance culture of industrial generators in the agro-based industries in South-West Nigeria has been carried out. The instruments used for this survey includes: interview, market survey direct observation and questionnaires. Investigation revealed that over 75% of the agro-based industries in the South-West town of Ibadan are predominantly medium scale in status with a carrying capacity of less than 550KVA electricity generating equipment. There is high level compliance (92.5%) tokeeping of daily maintenance record,negligence onlong time fuel keeping (up to 5 weeks at times), a greater degree of negligence inmean time to repairs (MTTR) on malfunctioned components and poor response time to servicing the generator at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maintenance; Malfunctioning; Generator; Capacity; Reliability. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3042 |
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| Moraes,Fillipe Alexandre; Takeda,Othavio Toniasso. |
| ABSTRACT The growing use of Photovoltaic Solar Energy in Brazil, both in power plants and in distributed generation systems, brings with it a series of practical and technical questions that are not limited to the design and project of the systems. Environmental factors and resources related to the use, operation, maintenance, decommissioning and final disposal of the equipment and components that constitute them, should be taken into consideration, so that these systems maintain an adequate performance during their lifespan granting the safety for users, properties and avoid negative environmental impacts. Within the concept of Risk Analysis within the Life Cycle of these systems, the present study addresses a perspective of the growth of the use of Solar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photovoltaic Installations; Maintenance; Degradation; Reliability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200234 |
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| Sacco,I.C.N.; Picon,A.P.; Ribeiro,A.P.; Sartor,C.D.; Camargo-Junior,F.; Macedo,D.O.; Mori,E.T.T.; Monte,F.; Yamate,G.Y.; Neves,J.G.; Kondo,V.E.; Aliberti,S.. |
| The aim of this study was to investigate the influence of image resolution manipulation on the photogrammetric measurement of the rearfoot static angle. The study design was that of a reliability study. We evaluated 19 healthy young adults (11 females and 8 males). The photographs were taken at 1536 pixels in the greatest dimension, resized into four different resolutions (1200, 768, 600, 384 pixels) and analyzed by three equally trained examiners on a 96-pixels per inch (ppi) screen. An experienced physiotherapist marked the anatomic landmarks of rearfoot static angles on two occasions within a 1-week interval. Three different examiners had marked angles on digital pictures. The systematic error and the smallest detectable difference were calculated from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physical therapy modalities; Photogrammetry; Reliability; Rearfoot angle. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000900003 |
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| Registros recuperados: 25 | |
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