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Curvas típicas de carga para o planejamento operacional do sistema de distribuição. ; Typical load curves for operational planning of distribution systems.

Paula, Guilherme Marques de Faria
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 25/04/2006 PT
Relevância na Pesquisa
26.09%
Nesta dissertação é proposto e avaliado um modelo de caracterização da carga para utilização no planejamento operacional dos sistemas de distribuição baseado na caracterização dos consumidores através de curvas típicas de carga. A identificação dos padrões de curvas típicas baseou-se na aplicação da rede neural tipo mapa auto organizável, sobre a grande massa de dados de medições de clientes da campanha de medidas realizada pela distribuidora no processo de revisão tarifária o que permitiu a identificação dos padrões de consumo de energia ativa e fator de potência para os consumidores ao longo do dia. O módulo de agrupamento baseado no mapa auto organizável associado a técnica clássica de agrupamento das k-médias mostrou-se uma ferramenta extremamente robusta e eficaz na identificação de padrões para grandes bases de dados. A comparação dos resultados das estimativas de carga para cerca de 200 alimentadores de distribuição medidos através do sistema SCADA complementa e valida a aplicação desta metodologia, que culmina com a proposição de um modelo de otimização, que com base nas medições, possibilita melhorias significativas na estimativa de carga dos alimentadores estudados. A metodologia proposta neste trabalho demonstra ser uma ferramenta eficaz para que a distribuidora de energia elétrica possa constantemente realimentar os dados sobre os hábitos de consumo de seus clientes...

Um modelo para projeto e implementação de bancos de dados analítico-temporais.; A model for design and implementation of analytic-temporal databases.

Poletto, Alex Sandro Romeu de Souza
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 07/12/2007 PT
Relevância na Pesquisa
56.44%
O presente trabalho descreve um modelo para, a partir de Bancos de Dados Operacionais, projetar e implementar Bancos de Dados Analítico-Temporais, cujo principal objetivo é o de armazenar históricos de dados, os quais, por sua vez, visam servir de alicerce para, principalmente, auxiliar no processo de tomada de decisões de médio e longo prazo. O modelo é dividido em três atividades principais. Na primeira atividade o objetivo é mapear os Modelos de Dados Operacionais em um Modelo de Dados Unificado, sendo que este último modelo serve de base para a segunda atividade que é a geração do Modelo de Dados Analítico-Temporal. Para realizar essas duas primeiras atividades, foram elaborados alguns passos que englobam as principais características a serem verificadas e desenvolvidas. Na terceira atividade objetivou-se disponibilizar mecanismos que possibilitem a geração, o transporte e o armazenamento dos dados Analítico-Temporais. Para a realização dessa terceira atividade foram especificados gatilhos e procedimentos armazenados genéricos.; This work describes a model whose main objective is to store historic data, resulting in the Analytic-Temporal Databases. The origins of the data are the Operational Databases. This model can aid in the design and implementation of the Analytic-Temporal Databases that constitutes a very adequate foundation to help in the medium and long time decision taking process. The model is divided into three main activities. In the first activity the objective is to map the Operational Data Models into a Unified Data Model. This last model is the base for the second activity...

Data mining languages for business intelligence

Azevedo, Ana Isabel Rojão Lourenço
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Tese de Doutorado
Publicado em 10/10/2012 ENG
Relevância na Pesquisa
26.17%
Tese de doutoramento in Information Systems and Technologies (area of Engineering and Management Information Systems); Desde que Lunh usou, pela primeira vez, em 1958, o termo Business Intelligence (BI), grandes transformações se operaram na área dos sistemas e tecnologias de informação e, em especial, na área dos sistemas de apoio à decisão. Atualmente, os sistemas de BI são amplamente utilizados nas organizações e a sua importância estratégica é largamente reconhecida. Estes sistemas apresentam-se como essenciais para um completo conhecimento do negócio e como uma ferramenta insubstituível no apoio à tomada de decisão. A divulgação das ferramentas de Data Mining (DM) tem vindo a aumentar na área do BI, assim como o reconhecimento da relevância da sua utilização nos sistemas de BI empresariais. As ferramentas de BI são ferramentas amigáveis, iterativas e interativas, permitindo aos utilizadores finais um acesso fácil. Desta forma, é possível ao utilizador final manipular diretamente os dados, tendo assim a possibilidade de extrair todo o valor para o negócio neles contido. Um dos problemas apontados na utilização do DM na área do BI prende-se com o facto de os modelos de DM serem, em geral...

Relational databases digital preservation

Freitas, Ricardo André Pereira
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Tese de Doutorado
Publicado em 24/07/2013 ENG
Relevância na Pesquisa
26.22%
Tese doutoramento - Programa Doutoral em Informática; With the expansion and growth of information technologies, much of human knowledge is now recorded on digital media. It began in the 20th century, it has been occurring continuously and it seems that there is no turning back. This paradigm brings scenarios where humans need mediators to understand digital information { computer platforms. These platforms are constantly changing and evolving and nothing can guarantee the continuity of access to digital artifacts in their absence. A new problem in the digital universe arises: Digital Preservation. There are huge volumes of information stored digitally and there are also a panoply of di erent classes, formats and types of digital objects. Our work addresses the problematic Digital Preservation and focuses on the logic and conceptual models within a speci c class of digital objects: Relational Databases. This family of digital objects is used by organizations to record their data produced on daily basis by information systems at operational levels or others. This structures are complex and the relational databases software support may di er from one organization to another. It can be proprietary, free or open source. Previously...

Diagnosis of implementation and impact study of operational risk under Basel II

Carvalho, Rita Isabel Quintas Gouveia de
Fonte: Instituto Superior de Economia e Gestão Publicador: Instituto Superior de Economia e Gestão
Tipo: Dissertação de Mestrado
Publicado em /01/2007 ENG
Relevância na Pesquisa
36.26%
Mestrado em Finanças; The purpose of this document is to discuss some of the most controversial aspects of Basel II specifically relating to Operational Risk requirements in terms of Capital adequacy. The author presents an overview of the Basel II framework in terms of foundation, fundamentals and challenges, and specifically operational risk requirements under Pillar I, before going on to discuss some of its most controversial aspects. Against our initial expectations, several interviews conducted with Operational Risk Officers as well as with Risk experts, consolidated by the analysis of databases and international surveys, show evidence to conclude that banks are still quite reluctant and struggling to understand the specific requirements of the Advanced Measurement Approach (AMA). This, together with the Key Risk Indicators component, remains the major challenge to the financial institutions, both still in a very early completion stage. The author also discusses practices and methodologies in terms of operational risk modeling, presenting an alternative development approach for a possible future update of the Basel requirements, as relates to aggregated event type differentiated treatment, for operational risk modeling, and thus capital calculation...

Defining DNA-Based Operational Taxonomic Units for Microbial-Eukaryote Ecology▿

Caron, David A.; Countway, Peter D.; Savai, Pratik; Gast, Rebecca J.; Schnetzer, Astrid; Moorthi, Stefanie D.; Dennett, Mark R.; Moran, Dawn M.; Jones, Adriane C.
Fonte: American Society for Microbiology (ASM) Publicador: American Society for Microbiology (ASM)
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.09%
DNA sequence information has increasingly been used in ecological research on microbial eukaryotes. Sequence-based approaches have included studies of the total diversity of selected ecosystems, studies of the autecology of ecologically relevant species, and identification and enumeration of species of interest for human health. It is still uncommon, however, to delineate protistan species based on their genetic signatures. The reluctance to assign species-level designations based on DNA sequences is in part a consequence of the limited amount of sequence information presently available for many free-living microbial eukaryotes and in part a consequence of the problematic nature of and debate surrounding the microbial species concept. Despite the difficulties inherent in assigning species names to DNA sequences, there is a growing need to attach meaning to the burgeoning amount of sequence information entering the literature, and there is a growing desire to apply this information in ecological studies. We describe a computer-based tool that assigns DNA sequences from environmental databases to operational taxonomic units at approximately species-level distinctions. This approach provides a practical method for ecological studies of microbial eukaryotes (primarily protists) by enabling semiautomated analysis of large numbers of samples spanning great taxonomic breadth. Derivation of the algorithm was based on an analysis of complete small-subunit (18S) rRNA gene sequences and partial gene sequences obtained from the GenBank database for morphologically described protistan species. The program was tested using environmental 18S rRNA data sets for two oceanic ecosystems. A total of 388 operational taxonomic units were observed for 2...

Operational Two-Stage Stratified Topographic Correction of Spaceborne Multispectral Imagery Employing an Automatic Spectral-Rule-Based Decision-Tree Preliminary Classifier

BARALDI A.; GIRONDA Matteo; SIMONETTI Dario
Fonte: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC Publicador: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Tipo: Articles in Journals Formato: Printed
ENG
Relevância na Pesquisa
26.17%
The increasing amount of remote sensing (RS) imagery acquired from multiple platforms and the recent announcements that scientists and decision makers around the world will soon have unrestricted access at no charge to large-scale spaceborne multispectral (MS) image databases make urgent the need to develop easy-to-use, effective, efficient, robust, and scalable satellite-based measurement systems. In these scientific and industrial contexts, it is well known that, to date, the operational performance of existing stratified non-Lambertian (anisotropic) topographic correction (SNLTOC) algorithms has been limited by the need for a priori knowledge of structural landscape characteristics, such as surface roughness which is land cover class specific. In practice, to overcome the circular nature of the SNLTOC problem, a mutually exclusive and totally exhaustive land cover classification map of a spaceborne MS image is required before SNLTOC takes place. This system requirement is fulfilled by the original operational automatic two-stage SNLTOC approach presented in this paper which comprises, in cascade, 1) an automatic stratification first stage and 2) a second-stage ordinary SNLTOC method selected from the literature. The former combines 1) four subsymbolic digital-elevation-model-derived strata...

Network application server using Extensible Mark-up Language (XML) to support distributed databases and 3D environments

Williams, Clifton James
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Relevância na Pesquisa
26.16%
This thesis contributes to the US Navy forces maintaining information superiority in a Network Centric Warfare environment. This research develops an Extensible Markup Language XML-based Web Publishing Framework, which supports the Web Enabled Navy (WEN) architecture infrastructure. The Web application framework easily supports connections to multiple distributed databases and XML-based presentations, specifically three-dimensional (3D) simulations utilizing Extensible 3D (X3D) and Virtual Reality Modeling Language (VRML). This research evaluates and demonstrates the functionality of an XML-based Web Publishing Framework. The research demonstrates ability to connect to both XML and non-XML heterogeneous database systems and provides a framework for the distribution data across heterogeneous systems. The system supports usage in multi-tier network architecture. 3D modeling and simulations provide insights into operations that cannot be realized using standard two-dimensional (2D) renditions. The development of an application server to support 3D modeling and simulations for operational planning will provide the U.S. Navy a better way of realizing operational limits. This research addresses the Web publishing framework, which supports the development XML based data exchange...

Development of an operational tool for oil spill forecast: application to oil exposed regions

Janeiro, João Miguel Leitão
Fonte: Universidade do Algarve Publicador: Universidade do Algarve
Tipo: Dissertação de Mestrado
Publicado em //2014 ENG
Relevância na Pesquisa
26.17%
Tese de doutoramento, Ciências do Mar, da Terra e do Ambiente (Modelação), Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2014; The objective of the following thesis is to present a modelling methodology, based on the MOHID system, which allows the development of coastal operational models by taking advantage of already implemented regional operational models using a downscaling approach. This increase in resolution allows studying the influence of coastal scale processes in the dynamics of oil spills, while contributing to more accurate forecasts. The methodology was used to forecast the evolution of oil spills in two distinct areas both prone to oil pollution events: Southwest Portuguese Coast and the Tuscany Archipelago (Italy). In both regions an operational model was developed and validated to a good level, using several types of oceanographic data available in European and global databases. The method was tested during the Costa Concordia accident, where operational forecasts aided the Italian authorities during the fuel removal operations. Also considered in this work are the interaction between waves/currents/wind in the dynamics of oil spills at sea...

An analysis of the integrated mechanical diagnostics health and usage management system on rotor track and balance

Revor, Mark S.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xx, 80 p.
Relevância na Pesquisa
26.09%
Approved for public release, distribution is unlimited; This thesis is concerned with the operational benefit of the Integrated Mechanical Diagnostics Health and Usage Management Systems (IMD HUMS) rotor track and balance (RTB) functionality. The questions addressed are whether there is a savings in flight hours expended on functional check flights (FCF's) when compared to present practices, if there will there be a reduction in directed maintenance man-hours (DMMH) spent on maintenance related to the rotor system, and the impact on Operational Availability. Experiments were conducted using a discrete event simulation model of squadron flight operations and organizational level maintenance. The simulation is generic and can be used in the analysis of other helicopters. Input parameters governing the distributions of maintenance action inter-arrival times were estimated from Naval Aviation Logistics Data Analysis (NALDA) databases and squadron experiences on such systems. The analysis suggests that flight hours spent in FCF are dependent upon vibration growth rate, an unknown quantity, and the maintenance policy for rotor smoothing. Directed maintenance man-hours decrease with increasing numbers of IMD HUMS configured aircraft and further gains are achieved with a maintenance policy suited to a continuous monitoring system.; Captain...

Data mining languages for business intelligence

Azevedo, Ana Isabel Rojão Lourenço
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Tese de Doutorado
Publicado em //2011 POR
Relevância na Pesquisa
26.13%
Doctoral Thesis in Information Systems and Technologies Area of Engineering and Manag ement Information Systems; Desde que Lunh usou, pela primeira vez, em 1958, o termo Business Intelligence (BI), grandes transformações se operaram na área dos sistemas e t ecnologias de informação e, em especial, na área dos sistemas de apoio à decisão. Atualmente , os sistemas de BI são amplamente utilizados nas organizações e a sua importância est ratégica é largamente reconhecida. Estes sistemas apresentam-se como essenciais para um comp leto conhecimento do negócio e como uma ferramenta insubstituível no apoio à tomada de decisão. A divulgação das ferramentas de Data Mining (DM) tem vindo a aumentar na área do BI, assim como o reconhecimento da relevância da sua utilização nos sistemas de BI emp resariais. As ferramentas de BI são ferramentas amigáveis, ite rativas e interativas, permitindo aos utilizadores finais um acesso fácil. Desta forma, é possível ao utilizador final manipular diretamente os dados, tendo assim a possibilidade d e extrair todo o valor para o negócio neles contido. Um dos problemas apontados na utilização d o DM na área do BI prende-se com o facto de os modelos de DM serem...

Nursing diagnoses related to skin: operational definitions

Ribeiro,Maria Andréia Silva; Lages,Julieth Santana Silva; Lopes,Maria Helena Baena Moraes
Fonte: Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo Publicador: Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2012 EN
Relevância na Pesquisa
26.17%
OBJECTIVE: to validate the operational definitions of the defining characteristics and risk factors of the three NANDA International (NANDA-I) nursing diagnoses and to revise these diagnoses' definitions. METHOD: content validation of nursing diagnosis. 146 defining characteristics and risk factors were identified in the literature in Brazilian and international databases. This was followed by content validation of the definitions of these diagnoses (presented by NANDA-I) and of the operational definitions (developed by the researchers) of the defining characteristics and risk factors, carried out by six expert nurses, regarding relevance, clarity and comprehensiveness. RESULT: of the 146 defining characteristics and risk factors, 22 were considered redundant and were excluded. The experts proposed changing the definitions of the diagnoses of Impaired Tissue Integrity and Risk for Impaired Skin Integrity. It was possible to identify various defining characteristics and risk factors which are not present in the NANDA-I taxonomy but which are indicated in the literature. CONCLUSION: the process attained its objective of producing valid operational definitions for defining characteristics and risk factors, which will permit the undertaking of validation studies for these diagnoses. The study's contribution to advancing scientific knowledge consists in its presenting clearer operational definitions for these diagnoses and a higher number of defining characteristics and risk factors...

IAEA nuclear databases for applications

Schwerer,Otto
Fonte: Sociedade Brasileira de Física Publicador: Sociedade Brasileira de Física
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2003 EN
Relevância na Pesquisa
26.13%
The Nuclear Data Section (NDS) of the International Atomic Energy Agency (IAEA) provides nuclear data services to scientists on a worldwide scale with particular emphasis on developing countries. More than 100 data libraries are made available cost-free by Internet, CD-ROM and other media. These databases are used for practically all areas of nuclear applications as well as basic research. An overview is given of the most important nuclear reaction and nuclear structure databases, such as EXFOR, CINDA, ENDF, NSR, ENSDF, NUDAT, and of selected special purpose libraries such as FENDL, RIPL, RNAL, the IAEA Photonuclear Data Library, and the IAEA charged-particle cross section database for medical radioisotope production. The NDS also coordinates two international nuclear data centre networks and is involved in data development activities (to create new or improve existing data libraries when the available data are inadequate) and in technology transfer to developing countries, e.g. through the installation and support of the mirror web site of the IAEA Nuclear Data Services at IPEN (operational since March 2000) and by organizing nuclear-data related workshops. By encouraging their participation in IAEA Co-ordinated Research Projects and also by compiling their experimental results in databases such as EXFOR...

Adaptação transcultural e avaliação das propriedades psicométricas do Determine Your Nutritional Health®, para idosos, no município de São Paulo - SP, Brasil; Cross-cultural adaptation and assessment of the psychometric properties of the Determine Your Nutritional Health®, for older people, in São Paulo - SP, Brazil

Roediger, Manuela de Almeida
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 25/09/2015 PT
Relevância na Pesquisa
26.17%
Introdução: A triagem nutricional é um método utilizado mundialmente, para identificar indivíduos em risco nutricional, sendo os idosos o segmento populacional mais vulnerável. No entanto, no Brasil, ainda não existem métodos específicos para triagem nutricional de idosos domiciliados. Objetivos: i) identificar métodos de triagem nutricional para idosos domiciliados e selecionar o mais adequado para utilização no Brasil; ii) realizar a adaptação transcultural e validação de conteúdo do método selecionado; e iii) verificar as propriedades psicométricas de confiabilidade, de validade e de equivalência operacional do método selecionado. Métodos: Esta tese é composta por três manuscritos. O primeiro apresenta revisão sistemática de métodos de triagem nutricional para idosos domiciliados, publicados nas bases de dados PubMed, LILACS e Web of Science, no período de 1990 a 2012. O segundo descreve o processo de adaptação transcultural e validação de conteúdo do método selecionado, Determine Your Nutritional Health® (DNH), para o Brasil. O terceiro analisou a versão brasileira do método de triagem nutricional Verifique a condição nutricional do idoso, quanto à confiabilidade (pelo teste de McNemar e gráficos de Bland & Altman)...

Provenance Traces

Cheney, James; Acar, Umut; Ahmed, Amal
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 02/12/2008
Relevância na Pesquisa
26.24%
Provenance is information about the origin, derivation, ownership, or history of an object. It has recently been studied extensively in scientific databases and other settings due to its importance in helping scientists judge data validity, quality and integrity. However, most models of provenance have been stated as ad hoc definitions motivated by informal concepts such as "comes from", "influences", "produces", or "depends on". These models lack clear formalizations describing in what sense the definitions capture these intuitive concepts. This makes it difficult to compare approaches, evaluate their effectiveness, or argue about their validity. We introduce provenance traces, a general form of provenance for the nested relational calculus (NRC), a core database query language. Provenance traces can be thought of as concrete data structures representing the operational semantics derivation of a computation; they are related to the traces that have been used in self-adjusting computation, but differ in important respects. We define a tracing operational semantics for NRC queries that produces both an ordinary result and a trace of the execution. We show that three pre-existing forms of provenance for the NRC can be extracted from provenance traces. Moreover...

Hyperset Approach to Semi-structured Databases and the Experimental Implementation of the Query Language Delta

Molyneux, Richard
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/02/2009
Relevância na Pesquisa
36.17%
This thesis presents practical suggestions towards the implementation of the hyperset approach to semi-structured databases and the associated query language Delta. This work can be characterised as part of a top-down approach to semi-structured databases, from theory to practice. The main original part of this work consisted in implementation of the hyperset Delta query language to semi-structured databases, including worked example queries. In fact, the goal was to demonstrate the practical details of this approach and language. The required development of an extended, practical version of the language based on the existing theoretical version, and the corresponding operational semantics. Here we present detailed description of the most essential steps of the implementation. Another crucial problem for this approach was to demonstrate how to deal in reality with the concept of the equality relation between (hyper)sets, which is computationally realised by the bisimulation relation. In fact, this expensive procedure, especially in the case of distributed semi-structured data, required some additional theoretical considerations and practical suggestions for efficient implementation. To this end the 'local/global' strategy for computing the bisimulation relation over distributed semi-structured data was developed and its efficiency was experimentally confirmed.; Comment: Technical Report (PhD thesis)...

Operational Aspects of Dealing with the Large BaBar Data Set

Azemoon, Tofigh; Hasan, Adil; Kroeger, Wilko; Trunov, Artem
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 12/06/2003
Relevância na Pesquisa
36.09%
To date, the BaBar experiment has stored over 0.7PB of data in an Objectivity/DB database. Approximately half this data-set comprises simulated data of which more than 70% has been produced at more than 20 collaborating institutes outside of SLAC. The operational aspects of managing such a large data set and providing access to the physicists in a timely manner is a challenging and complex problem. We describe the operational aspects of managing such a large distributed data-set as well as importing and exporting data from geographically spread BaBar collaborators. We also describe problems common to dealing with such large datasets.; Comment: Presented for Computing in High Energy Physics, San Diego, March 2003

A Data Warehouse Design for a Typical University Information System

Bassil, Youssef
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 10/12/2012
Relevância na Pesquisa
26.13%
Presently, large enterprises rely on database systems to manage their data and information. These databases are useful for conducting daily business transactions. However, the tight competition in the marketplace has led to the concept of data mining in which data are analyzed to derive effective business strategies and discover better ways in carrying out business. In order to perform data mining, regular databases must be converted into what so called informational databases also known as data warehouse. This paper presents a design model for building data warehouse for a typical university information system. It is based on transforming an operational database into an informational warehouse useful for decision makers to conduct data analysis, predication, and forecasting. The proposed model is based on four stages of data migration: Data extraction, data cleansing, data transforming, and data indexing and loading. The complete system is implemented under MS Access 2010 and is meant to serve as a repository of data for data mining operations.; Comment: LACSC - Lebanese Association for Computational Sciences, http://www.lacsc.org

Nursing diagnoses related to skin: operational definitions; Diagnósticos de enfermería relacionados a la piel: definiciones operacionales; Diagnósticos de enfermagem relacionados à pele: definições operacionais

Ribeiro, Maria Andréia Silva; Lages, Julieth Santana Silva; Lopes, Maria Helena Baena Moraes
Fonte: Universidade de São Paulo. Escola de Enfermagem de Ribeirão Preto Publicador: Universidade de São Paulo. Escola de Enfermagem de Ribeirão Preto
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf; application/pdf; application/pdf
Publicado em 01/10/2012 ENG; POR; SPA
Relevância na Pesquisa
26.17%
OBJECTIVE: to validate the operational definitions of the defining characteristics and risk factors of the three NANDA International (NANDA-I) nursing diagnoses and to revise these diagnoses' definitions. METHOD: content validation of nursing diagnosis. 146 defining characteristics and risk factors were identified in the literature in Brazilian and international databases. This was followed by content validation of the definitions of these diagnoses (presented by NANDA-I) and of the operational definitions (developed by the researchers) of the defining characteristics and risk factors, carried out by six expert nurses, regarding relevance, clarity and comprehensiveness. RESULT: of the 146 defining characteristics and risk factors, 22 were considered redundant and were excluded. The experts proposed changing the definitions of the diagnoses of Impaired Tissue Integrity and Risk for Impaired Skin Integrity. It was possible to identify various defining characteristics and risk factors which are not present in the NANDA-I taxonomy but which are indicated in the literature. CONCLUSION: the process attained its objective of producing valid operational definitions for defining characteristics and risk factors, which will permit the undertaking of validation studies for these diagnoses. The study's contribution to advancing scientific knowledge consists in its presenting clearer operational definitions for these diagnoses and a higher number of defining characteristics and risk factors...

Whose "successful ageing"?: lay- and researcher-driven conceptualisations of ageing well

Cosco,Theodore D; Matthew Prina,A.; Perales,Jaime; Stephan,Blossom CM; Brayne,Carol
Fonte: The European Journal of Psychiatry Publicador: The European Journal of Psychiatry
Tipo: info:eu-repo/semantics/article; journal article; info:eu-repo/semantics/publishedVersion Formato: text/html; application/pdf
Publicado em 01/06/2014 ENG
Relevância na Pesquisa
26.14%
Background and Objectives: To date, there is no consensus definition of successful ageing (SA). In the literature, conceptualisations of SA are generally researcher-driven operational definitions or layperson perspectives. The current study aims to systematically review and compare quantitative operational definitions of SA with qualitative, layperson perspectives of SA. Methods: PubMed, PsycInfo, ISI Web of Knowledge, EmBase and CINAHL databases were searched using the words "successful ageing" and related terms. Peer-reviewed studies positing quantifiable operational definitions of SA were included, as were studies that conducted exploratory qualitative study of layperson perspectives of SA. Results: Marked differences in the focus of SA conceptualizations between researchers and laypersons were revealed. Qualitative studies demonstrated a greater emphasis on psychosocial aspects of SA, such as attitude whilst quantitative studies were generally biomedically focused, e.g. physical functioning/disability. Conclusions: Little concordance in classification of SA is found across the two perspectives such that an individual may be simultaneously classified as unsuccessfully ageing from a biomedical approach and successfully ageing from a layperson perspective. Most studies have been conducted in North America and the UK using non-clinical populations...