{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/3953"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/3953","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Calibração automática de modelos tipo chuva-vazão utilizando técnicas de suavização: uma aplicação ao modelo SMAP-II","abstract":"Parameter calibration is a critical, but essential step in Hydrologic Modelling. In this way, some optimization algorithms for automatic calibration have been applied to conceptual Rainfall-Runoff modelling, but several problems have been detected, which have motivated many researches. This work examines the possibility of using Quasi-Newton type (second derivative-based) optimization algorithm for calibration of conceptual Rainfall-Runoff models. The technique developed presents a previous structural modification of a typical model to obtain the objective function explicit in terms of parameters. The threshold structures that implicate in \"if’s\" structures, generators of discontinuites, were replaced by smoothing functions thereby preserving the conceptual intregrity of the model. Application to some syntetic cases were included and considerations were done about real cases. The results indicate that a significant progress was achieved in the area of automatic calibration of conceptual Rainfall-Runoff models. A few problems were identified and can be explored in future researches.","abstract_html":"Parameter calibration is a critical, but essential step in Hydrologic Modelling. In this way, some optimization algorithms for automatic calibration have been applied to conceptual Rainfall-Runoff modelling, but several problems have been detected, which have motivated many researches. This work examines the possibility of using Quasi-Newton type (second derivative-based) optimization algorithm for calibration of conceptual Rainfall-Runoff models. The technique developed presents a previous structural modification of a typical model to obtain the objective function explicit in terms of parameters. The threshold structures that implicate in "if’s" structures, generators of discontinuites, were replaced by smoothing functions thereby preserving the conceptual intregrity of the model. Application to some syntetic cases were included and considerations were done about real cases. The results indicate that a significant progress was achieved in the area of automatic calibration of conceptual Rainfall-Runoff models. A few problems were identified and can be explored in future researches.","abstract_has_math":false,"creators":["Silva, Luciene Pimentel da"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Magalhães, Paulo Canedo de"],"committee_chairs":[],"committee_members":[],"year":1990,"date_issued":"1990-06","date_published":"1990-06","updated_at":"2026-07-24T01:16:12Z","subjects":["Engenharia Civil"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/3953","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Magalhães, Paulo Canedo de"]},{"key":"dc:creator","label":"Author","values":["Silva, Luciene Pimentel da"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-05-15T13:42:09Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:05:30Z"]},{"key":"dc:date.issued","label":"Date","values":["1990-06"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engenharia Civil"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/3953"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Parameter calibration is a critical, but essential step in Hydrologic Modelling. In this way, some optimization algorithms for automatic calibration have been applied to conceptual Rainfall-Runoff modelling, but several problems have been detected, which have motivated many researches. This work examines the possibility of using Quasi-Newton type (second derivative-based) optimization algorithm for calibration of conceptual Rainfall-Runoff models. The technique developed presents a previous structural modification of a typical model to obtain the objective function explicit in terms of parameters. The threshold structures that implicate in \"if’s\" structures, generators of discontinuites, were replaced by smoothing functions thereby preserving the conceptual intregrity of the model. Application to some syntetic cases were included and considerations were done about real cases. The results indicate that a significant progress was achieved in the area of automatic calibration of conceptual Rainfall-Runoff models. A few problems were identified and can be explored in future researches."]},{"key":"dc:title","label":"Title","values":["Calibração automática de modelos tipo chuva-vazão utilizando técnicas de suavização: uma aplicação ao modelo SMAP-II"]}]}],"canonical_facts":{"dc:contributor.advisor":["Magalhães, Paulo Canedo de"],"dc:creator":["Silva, Luciene Pimentel da"],"dc:date.accessioned":["2018-05-15T13:42:09Z"],"dc:date.available":["2026-05-16T03:05:30Z"],"dc:date.issued":["1990-06"],"dc:description.abstract":["Parameter calibration is a critical, but essential step in Hydrologic Modelling. In this way, some optimization algorithms for automatic calibration have been applied to conceptual Rainfall-Runoff modelling, but several problems have been detected, which have motivated many researches. This work examines the possibility of using Quasi-Newton type (second derivative-based) optimization algorithm for calibration of conceptual Rainfall-Runoff models. The technique developed presents a previous structural modification of a typical model to obtain the objective function explicit in terms of parameters. The threshold structures that implicate in \"if’s\" structures, generators of discontinuites, were replaced by smoothing functions thereby preserving the conceptual intregrity of the model. Application to some syntetic cases were included and considerations were done about real cases. The results indicate that a significant progress was achieved in the area of automatic calibration of conceptual Rainfall-Runoff models. A few problems were identified and can be explored in future researches."],"dc:identifier.uri":["http://hdl.handle.net/11422/3953"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Engenharia Civil"],"dc:title":["Calibração automática de modelos tipo chuva-vazão utilizando técnicas de suavização: uma aplicação ao modelo SMAP-II"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:12Z"}