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A decentralized predictive maintenance system based on data mining concepts IPB - Escola Superior Agrária
Lopes, Isabel; Pires, L.C.M.; Bastos, Pedro.
In the last years we have assisted to several and deep changes in industrial manufacturing. Induced by the need of increasing efficiency, bigger flexibility, better quality and lower costs, it became more complex [1]. Enterprises had had the need to cope with market expectations, incorporating in their production philosophies new paradigms such as JIT- Just in time, MTOMake to order, Mass Customization, agile manufacturing or Lean Manufacturing, that allow them to satisfy markets with a big diversity of products and also big quantities, becoming therefore more competitive. All this complexity has caused big pressure under enterprises maintenance systems. Maintenance mission is to make equipment and facilities available when requested. Maintenance function,...
Tipo: ConferenceObject Palavras-chave: Management; Maintenance; Data mining; E-collaboration protocols; Reference architectures.
Ano: 2010 URL: http://hdl.handle.net/10198/3927
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An assessment of the Small-Scale Irrigation Management Turnover Program in Indonesia AgEcon
Vermillion, Douglas Lynn; Samad, Madar; Pusposutardjo, Suprodjo; Arif, Sigit S.; Rochdyanto, Saifal.
Examines the extent to which the Government of Indonesia's aspirations were realized through turnover program adopted in 1987. The impacts of management turnover on irrigation management and irrigated agriculture in selected systems in West and Central Java are analyzed. This study is part of a comparative research program to examine the impacts of irrigation management transfer in several countries using a common methodology.
Tipo: Report Palavras-chave: Irrigation management; Privatization; Small scale systems; Irrigation systems; Water distribution; Performance; Operations; Maintenance; Productivity; Crop yield; Economic impact; Costs; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2000 URL: http://purl.umn.edu/44574
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Análise econômica de algumas alternativas de manejo de pastagens cultivadas - Paragominas-PA. Infoteca-e
KITAMURA, P. C.; DIAS FILHO, M. B.; SERRÃO, E. A. S..
1982
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Pastagem; Manutencao; Analise economica; Recuperacao; Produtividade; Campo Experimental de Paragominas; Pará; Amazonia; Brasil; Pasture; Productivity; Maintenance; Recuperation.
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/382319
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Analysis of the Insertion of Particular Photovoltaic Generation in the Low Voltage Installations, Under the Approach to Performance, Safety, Maintenance and Operation of the PVS BABT
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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Capacity building for participatory irrigation management in Sindh Province of Pakistan. AgEcon
Memon, Yameen; Talpur, Mustafa; Murray-Rust, Hammond.
Tipo: Working or Discussion Paper Palavras-chave: River basins; Institutions; Organizations; Private sector; Public sector; Local government; Mapping; Water resource management; Water policy; Legislation; Rural women; Constraints; Groundwater; Surface water; Water quality; Water use; Water users; Dams; Reservoirs; Large-scale systems; Irrigation management; Industrialization; Case studies; Operations; Maintenance; Canals; Conflict; Farmer-agency interactions; Policy; Water supply; Rural development; Community/Rural/Urban Development; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/92769
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Charging for irrigation water: The issues and options, with a case study from Iran AgEcon
Perry, Christopher J..
Inadequate funding for maintenance of irrigation works and emerging shortages of water are prevalent. The use of water charges to generate resources for maintenance and to reduce demand is widely advocated. Examples from other utilities, and from the domestic/industrial sectors of water supply suggest the approach could be effective. In developing countries, the facilities required for measured and controlled delivery of irrigation are rarely in place, and would require a massive investment in physical, legal and administrative infrastructure. To be effective in curtailing demand, the marginal price of water must be significant. The price levels required to cover operation and maintenance (O&M) costs are too low to have a substantial impact on demand,...
Tipo: Report Palavras-chave: Irrigation management; Productivity; Water allocation; Water use efficiency; Operations; Maintenance; Cost recovery; User charges; Water rates; Pricing; River basins; Water shortage; Economic aspects; Salinity; Case studies; Agribusiness; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Financial Economics; Land Economics/Use; Production Economics; Productivity Analysis; Public Economics.
Ano: 2001 URL: http://purl.umn.edu/44567
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Eficiencia de utilizacao e exigencias da energia metabolizavel e dos nutrientes digestiveis totais para mantenca em bezerros. Repositório Alice
ARAUJO, G. G. L. de; VALADARES FILHO, S. de C.; SILVA, J. F. C da; CAMPOS, O. F. de; SIGNORETTI, R. D.; TURCO, S. H. N.; HENRIQUES, L. T.; ROVETTA, R..
O presente trabalho foi conduzido a fim de se estimarem a eficiencia de utilizacao da energia metabolizavel, para mantenca e ganho de peso, e as exigencias de energia metabolizavel e nutrientes digestiveis totais, de bezerros em crescimento provenientes de rebanho leiteiro mesticos, alimentados com diferentes niveis de volumoso nas dietas, Foram utilizados 48 bezerros nesticos machos, nao-castrados, com idade aproximada de 60 dias e peso vivo medio inical de 60 Kg. As concentracoes de energia liquida das dietas foram calculadas conforme HARRIS (1970). Concluiu-se que as eficiencias de utilizacao da energia metabolizavel para mantenca estimadas foram de 0,61; 0,62; 0,62; 0,61 e 0,53, para as concentracoes de energia metabolizavel 2,70, 2,65; 2,40; 2,38 e...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Exigencia; Nutrientes; Volumoso; Mantenca; Maintenance; Requirements; Roughage; Bezerro; Valor Nutritivo; Calves; Metabolizable energy; Nutrients.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/131521
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Energy and protein nutritional requirements for Nellore bulls R. Bras. Zootec.
Silva,Luiz Fernando Costa e; Valadares Filho,Sebastião de Campos; Zanetti,Diego; Rotta,Polyana Pizzi; Marcondes,Marcos Inácio; Prados,Laura Franco; Paulino,Mário Fonseca; Azevedo,Henrique de Oliveira.
The objective of this study was to determine the nutritional requirements of energy and protein and estimate the efficiencies of metabolizable energy utilization for fat and protein deposition, as well as for maintenance (k m) and growth (k g). An experiment of comparative slaughter was carried out with thirty-seven 14-month-old (±1 month) Nellore bulls with 259±24.9 kg. Animals were divided as follows: five to reference, four to maintenance level and twenty-eight bulls feeding ad libitum. Bulls were also grouped in 4 different feedlot periods (42, 84, 126 and 168 days) for slaughter. The diet was composed of corn silage and concentrate, at a 55:45 ratio. After the slaughter, the left half carcasses were totally dissected for determination of body...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deposition; Efficiency; Growth; Maintenance; Metabolizable energy.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600028
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Energy and protein requirements of young Holstein calves in tropical condition. Repositório Alice
RODRIGUES, J. P. P.; LIMA, J. C. M.; CASTRO, M. M. D.; VALADARES FILHO, S. de C.; CAMPOS, M. M.; CHIZOTTI, M. L.; MARCONDES, M. I..
Our objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected and slaughtered to compose the baseline slaughter (BS) group. The remaining calves were randomly assigned to eight treatments in a 4 × 2 factorial using a completely randomized design. The treatments were 2, 4, 6, and 8 kg/day of milk (297 g/kg CP; 319 g/kg of fat) fed twice daily, and then harvested at 59 or 87 days of age. Calves were fed a starter (193 g/kg CP; 133 g/kg NDF) ad libitum in all treatments. The calves slaughtered at 87 days of age had milk replaced by Coast-cross (Cynodoon sp.) hay (125 g/kg CP; 728 g/kg NDF). The net requirement of energy for...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Comparative slaughter; Efficiency of utilization; Growth; Maintenance; Metabolizable energy; Metabolizable protein; Dairy calves; Holstein; Metabolizable energy; Slaughter.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1058344
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Energy nutritional requirements for females of Nellore, Nellore × Angus and Nellore × Simmental fed on two forage: concentrate ratios R. Bras. Zootec.
Souza,Evaristo Jorge Oliveira de; Valadares Filho,Sebastião de Campos; Guim,Adriana; Valadares,Rilene Ferreira Diniz; Marcondes,Marcos Inácio; Véras,Antonia Sherlânea Chaves; Amaral,Paloma de Melo; Santos,Tathyane Ramalho.
The objective of this study was to determine the energy nutritional requirements for females of Nellore, Nellore × Angus and Nellore × Simmental fed on two levels of concentrate. Sixty heifers from three genetic groups were used: 20 Nellore, 20 Nellore × Angus and 20 Nellore × Simmental. Twelve belonged to the reference group (four of each genetic group) and were slaughtered at the beginning of the experiment. Another 12 heifers (four of each genetic group) were fed on the maintenance level and 36 heifers (12 animals of each genetic group) were kept in feeding system ad libitum with 30 (six in each group) or 50% (six of each group) dry matter concentrate. Animals were randomly assigned to six treatments in a 3 × 2 factorial arrangement (three genetic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crossbred heifers; Maintenance; Metabolizable energy; Net energy.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300039
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Estimating age at maturation and energy-based life-history traits from individual growth trajectories with nonlinear mixed-effects models ArchiMer
Brunel, Thomas; Ernande, Bruno; Mollet, Fabian M.; Rijnsdorp, Adriaan D..
A new method is presented to estimate individuals’ (1) age at maturation, (2) energy acquisition rate, (3) energy expenditure for body maintenance, and (4) reproductive investment, and the multivariate distribution of these traits in a population. The method relies on adjusting a conceptual energy allocation model to individual growth curves using nonlinear mixed-effects modelling. The method’s performance was tested using simulated growth curves for a range of life-history types. Individual age at maturation, energy acquisition rate and the sum of maintenance and reproductive investment rates, and their multivariate distribution, were accurately estimated. For the estimation of maintenance and reproductive investment rates separately, biases were observed...
Tipo: Text Palavras-chave: Bioenergetics growth model; Individual growth trajectory; Life-history trade-offs; Energy acquisition; Maintenance; Reproductive investment; Sexual maturation.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00124/23537/21378.pdf
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Evolution, present status and issues concerning small tank systems in Sri Lanka [Small tanks in Sri Lanka: evolution, present status and issues] AgEcon
Panabokke, Christopher Rajendra; Sakthivadivel, Ramasamy; Dias Weerasinghe, Asoka.
Tipo: Book Palavras-chave: Tank irrigation; Small scale systems; History; Irrigation systems; Design; Maintenance; Hydrology; Pollution; Irrigation management; Cultivation; Farming systems; Wells; Crop Production/Industries; Farm Management.
Ano: 2002 URL: http://purl.umn.edu/113505
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Farmers' perceptions of the social mobilization of water user organizations in the Sindh, Pakistan AgEcon
Starkloff, Ralf.
Tipo: Working or Discussion Paper Palavras-chave: Water users' associations; Participatory management; Farmer participation; Leadership; Water supply; Water distribution; Maintenance; Privatization; Irrigation programs; Irrigation canals; Farmers' associations; Farm Management; Institutional and Behavioral Economics.
Ano: 2001 URL: http://purl.umn.edu/92778
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Free-riders or victims: Women's nonparticipation in irrigation management in Nepal's Chhattis Mauja Irrigation Scheme. AgEcon
Zwarteveen, Margreet Z.; Neupane, Nita.
Examines multiple factors in women's involvement/non-involvement in irrigation in the Chhattis Mauja irrigation scheme in Nepal. Includes an empirical analysis of the livelihood strategies of farm households, documentation of the level and nature of participation of women and men in the water users' organizations, analysis of women's access to irrigation services, and an examination of the need and desirability of increasing the participation of woman in the scheme organization.
Tipo: Report Palavras-chave: Irrigation management; Farmer-managed irrigation systems; Irrigation programs; Privatization; Water users' associations; Irrigated farming; Irrigation canals; Water delivery; Water allocation; Water distribution; Maintenance; Gender; Women in development; Farmers; Female labor; Agricultural manpower; Households; Family labor; Living standards; Social aspects; Agricultural production; Villages; Social organization; Performance evaluation; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Farm Management; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Production Economics.
Ano: 1996 URL: http://purl.umn.edu/52731
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Impact assessment of irrigation management transfer in the Alto Rio Lerma Irrigation District, Mexico AgEcon
Kloezen, Wim H.; Garces-Restrepo, Carlos; Johnson, Sam H., III.
Tests the hypothesis that, in general, irrigation management transfer has positive impacts on operation performance, managerial accountability, O&M budgeting and expenditures, costs of water to farmers, and agricultural and economic productivity in the Alto Rio Lerma Irrigation District in Mexico. Evaluates the potential of the Mexican IMT process as a model for other countries.
Tipo: Report Palavras-chave: Irrigation management; Privatization; Assessment; Economic aspects; Legal aspects; Data collection; Water rights; Water allocation; Water distribution; Groundwater; Financing; Maintenance; Operations; Agricultural production; Water users' associations; Farmer participation; Mexico; Alto Rio Lerma Irrigation District; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Resource /Energy Economics and Policy.
Ano: 1997 URL: http://purl.umn.edu/61110
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Impacts of Colombia's current irrigation management transfer program AgEcon
Vermillion, Douglas Lynn; Garces-Restrepo, Carlos.
Assess the impacts of the current national irrigation management transfer program in Colombia. Examines the context of transfer, the basic transfer strategy, the impacts of transfer, and the powers and functions devolved in the transferred districts. The need to use the transfer process to create local management self-reliance is also stressed.
Tipo: Report Palavras-chave: Privatization; Irrigation management; Irrigated farming; Policy; Costs; Economic aspects; Operations; Maintenance; Agricultural production; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 1998 URL: http://purl.umn.edu/44584
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Inadequacies in the water reforms in the Kyrgyz Republic: an institutional analysis AgEcon
Ul Hassan, Mehmood; Starkloff, Ralf; Nizamedinkhodjayeva, Nargiza.
This report analyzes the evolving water-management institutions and their performance of five core water management functions, in the context of the ongoing economic and agrarian reform in the Kyrgyz Republic. These core water-management functions are, operation of water systems, maintenance, resource mobilization, conflict resolution and organizational management. The report also identifies key issues and challenges that constrain effective stakeholder participation in water-resources management.
Tipo: Report Palavras-chave: Water resource management; Analysis; Irrigation management; Participatory management; Water users’ associations; Research methods; Agrarian reform; Irrigation programs; Operations; Maintenance; Conflict; Rivers; Kyrgyzstan; Agribusiness; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/53066
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Institutional arrangements for land drainage in developing countries AgEcon
Freisem, Claudia; Scheumann, Waltina.
Tipo: Working or Discussion Paper Palavras-chave: Drainage; Infrastructure; Irrigable land; Farmer participation; Financing; Land reclamation; Flood control; Irrigated farming; Social aspects; Economic aspects; Environment; Case studies; Operations; Maintenance; Waterlogging; Salinity; Productivity; Food security; Institutional constraints; Communal irrigation systems; Water users' associations; Farm Management; Financial Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2001 URL: http://purl.umn.edu/92776
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Integrating the effects of salinity on the physiology of the eastern oyster, Crassostrea virginica, in the northern Gulf of Mexico through a Dynamic Energy Budget model ArchiMer
Lavaud, Romain; La Peyre, Megan K.; Casas, Sandra M.; Bacher, Cedric; La Peyre, Jerome F..
We present a Dynamic Energy Budget (DEB) model for the eastern oyster, Crassostrea virginica, which enables the inclusion of salinity as a third environmental variable, on top of the standard foodr and temperature variables. Salinity changes have various effects on the physiology of oysters, potentially altering filtration and respiration rates, and ultimately impacting growth, reproduction and mortality. We tested different hypotheses as to how to include these effects in a DEB model for C. virginica. Specifically, we tested two potential mechanisms to explain changes in oyster shell growth (cm), tissue dry weight (g) and gonad dry weight (g) when salinity moves away from the ideal range: 1) a negative effect on filtration rate and 2) an additional...
Tipo: Text Palavras-chave: DEB theory; Bioenergetics; Filtration; Maintenance; Growth; Estuary; Louisiana.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00400/51137/53773.pdf
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Investigation into Industrial Generator Maintenance Culture in Agro-Based Industries in South-West Nigeria CIGR Journal
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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