Ara es mostren els items 44679-44698 de 244434

    • Composition, nanostructure, and optical properties of silver and silver-copper lusters 

      Pradell Cara, Trinitat; Pavlov, R.S.; Gutiérrez Repiso, Carolina; Climent Font, Aurelio; Molera Marimon, Judit (American Institute of Physics (AIP), 2012-09-01)
      Article
      Accés obert
      Lusters are composite thin layers of coinage metal nanoparticles in glass displaying peculiar optical properties and obtained by a process involving ionic exchange, diffusion, and crystallization. In particular, the origin ...
    • Compositional analysis approach in the measurement of social-spatial segregation trends. A case study of Guadalajara, Jalisco, Mexico 

      Cruz Sandoval, Marco Antonio; Ortego Martínez, María Isabel; Roca Bosch, Elisabet (2019)
      Comunicació de congrés
      Accés obert
      Different authors have highlighted the internal existing social differences in cities as a consequence of different economic, social and political forces. The mercantile logic that affects urban spaces incentives the ...
    • Compositional analysis of correlation of weather parameters with russet of 'golden delicious' apples 

      Barceló Vidal, C.; Bonany, J.; Carbó, J. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      The development of russet on 'Golden Delicious' apples is a problem of concern to growers of fresh market apples. Russeting is considered to be due to untimely divisions of cells in the epidermis of the fruit initiated ...
    • Compositional analysis of phosphorus pools in Canadian Mollisols 

      Abdi, D.; Ziadi, N.; Parent, L-É. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      During cultivation, the internal phosphorus cycle of Mollisols (Chernozems) of the Canadian Prairies is perturbed by crop sequences including wheat phases, tillage practices, and regular applications of fertilizers. To ...
    • Compositional analysis of wastewater treatment using horizontal subsurface flow constructed wetlands 

      Lin Ye, Jue (Universitat Politècnica de Catalunya, 2013-07-15)
      Tesina
      Accés restringit per decisió de l'autor
      The performance of horizontal subsurface flow constructed wetlands is closely examined. Data are analyzed regarding them as compositional. Therefore, specific Compositional Data Analysis methods, developed by Aitchison, ...
    • Compositional classes and diversity in archaeological ceramic studies 

      Buxeda i Garrigós, J. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Archaeological studies are based, at a large extent, on the study of the materials that form the different unearthed assemblages. Thus, ceramic assemblages are defined by their compositions, i.e. how many pots of different ...
    • Compositional combination and selection of forecasters 

      Martín Arroyo, Antonio; de Juan Fernández, Aránzazu (Institut d'Estadística de Catalunya, 2022-12-19)
      Article
      Accés obert
      The Split-Then-Combine approach has previously been used to generate the weights of forecasts in a combination in the Euclidean space. This paper extends this approach to combine forecasts inside the simplex space, the ...
    • Compositional data analysis : An innovative framework for analyzing asset allocation and portfolio performance 

      Prous I Conde, Joan (Universitat Politècnica de Catalunya, 2023-07-06)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Stock market sectors and financial ratios are extensively studied by banks and financial institutions worldwide. However, when these types of data are expressed as percentages, they present mathematical and statistical ...
    • Compositional data analysis approach in the measurement of social-spatial segregation: towards a sustainable and inclusive city 

      Cruz Sandoval, Marco Antonio; Roca Bosch, Elisabet; Ortego Martínez, María Isabel (2020-05-24)
      Article
      Accés obert
      The location and context in which people live influences and conditions their opportunities in life. This becomes relevant in a world subject to rapid urban and demographic growth, in which different economic, social, and ...
    • Compositional data analysis as a potential tool to study the (paleo)ecology of calcareous nannoplankton from the central portuguese submarine canyons (W off Portugal) 

      Guerreiro, C.; Cachão, M.; Stigter, De; Oliveira, H.; Rodrigues, A. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Submarine canyons are deep and steep incisions on the continental margins. The physical forcing mechanisms linked with these marine systems, such as the enhancement of upwelling and bottom sediment resuspension, are ...
    • Compositional data analysis with Red-R 

      Parent, Serge-Etienne; Covington, Kyle R. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      The compositional analyst must use a series of software to transform raw compositional data and run statistical analyses on them. Tools for compositional data analysis are available in R, an open source widely-used ...
    • Compositional data for global monitoring: the case of drinking water and sanitation 

      Pérez Foguet, Agustí; Giné Garriga, Ricard; Ortego Martínez, María Isabel (2017-07)
      Article
      Accés obert
      Introduction At a global level, access to safe drinking water and sanitation has been monitored by the Joint Monitoring Programme (JMP) of WHO and UNICEF. The methods employed are based on analysis of data from household ...
    • Compositional data techniques for the analysis of the container traffic share in a multi-port region 

      Grifoll Colls, Manel; Ortego Martínez, María Isabel; Egozcue Rubí, Juan José (Springer, 2019-12)
      Article
      Accés obert
      The statistical techniques based on compositional data are applied to investigate the evolution of the traffic share of the container throughput in a multi-port system. Compositional vectors are those which contain relative ...
    • Compositional data, bayesian inference and the modeling process 

      Bacon-Shone, J. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Statistical modeling in practice encompasses both the exploratory process, which is an inductive scientific approach and the confirmatory modeling process, which uses the deductive scientific approach. This paper will ...
    • Compositional formulation for multi phase flow reactive transport in porous media: an approach that simplifies coupling between phenomena 

      Gamazo Rusnac, Pablo Andres; Saaltink, Maarten Willem; Carrera Ramírez, Jesús (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2010)
      Text en actes de congrés
      Accés obert
      In this work we discuss coupling difficulties that arises when solving phase and species conservation equations. We present a compositional formulation that avoids these difficulties, and allows solving multiphase reactive ...
    • Compositional influence on the electrical performance of zinc indium tin oxide transparent thin-film transistors 

      Marsal Vinade, Albert; Carreras Seguí, Paz; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Galindo Lorente, Sergi; Alcubilla González, Ramón; Bertomeu Balaguero, Joan; Antony, Aldrin (2014-03-31)
      Article
      Accés restringit per política de l'editorial
      In this work, zinc indium tin oxide layers with different compositions are used as the active layer of thin film transistors. This multicomponent transparent conductive oxide is gaining great interest due to its reduced ...
    • Compositional loess modeling 

      Bergman, J.; Holmquist, B. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Cleveland (1979) is usually credited with the introduction of the locally weighted regression, Loess. The concept was further developed by Cleveland and Devlin (1988). The general idea is that for an arbitrary number of ...
    • Compositional meta-analysis of citrus varieties in the state of São Paulo, Brazil 

      Rozane, Danilo Eduardo; De Mattos Junior, Dirceu; Parent, Serge-Etienne; Natale, William; Parent, Leon Etienne (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Brazil is the largest orange (Citrus sinensis) producer worldwide. The nutrient management of orange orchards is designed from experiments on a limited number of varieties. This knowledge is transferred to other varieties ...
    • Compositional meta-analysis of the nutrient profile of potato cultivars 

      Hernandes, Amanda; Parent, Serge-Etienne; Veillette, Jean-Pierre; Parent, Philippe; Leblanc, Michaël; Roy, Guy; Sylvestre, Philippe; Samson, Nicolas; Natale, William; Parent, Leon Etienne (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      While several potato (Solanum tuberosum L.) cultivars of different maturity groups (e.g. early, mid-season, late) are being selected each year as a result of successful breeding for disease resistance and market requirements, ...
    • Compositional random data: a routine for CoDaPack 

      Comas Cufí, Marc; Mateu Figueras, G.; Thió Fernández de Henestrosa, Santiago (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Generation of random variables are needed in the simulations of many natural process. For some random variables, di erent methodologies are known, specially into euclidean spaces. In this paper a routine for dealing with ...