Improving User Interaction on Ontology-based Peer Data Management Systems

The issue of user interaction for query formulation and execution has been investigated for distributed and dynamic environments, such as Peer Data Management System (PDMS). Many of these PDMS are semantic based and composed by data peers which export schemas that are represented by ontologies. In the literature we can find some proposed PDMS interfaces, but none of them addresses, in a general way, the needs of a PDMS for user interaction. In this work we propose a visual user query interface for ontology-based PDMS. It provides a simple and straightforward interaction with this type of system. It aims not only providing a natural visual query interface but also supporting a precise and direct manipulation of the data schemas for query generation

DEVELOPMENT AND VALIDATION OF AN ECOLOGICAL, NEW AND RAPID STABILITY-INDICATING HIGH PERFORMANCE LIQUID CHROMATOGRAPHY FOR QUANTITATIVE DETERMINATION OF AZTREONAM IN LYOPHILIZED POWDER FOR INJECTION

Aztreonam is a monocyclic synthetic antimicrobial with bactericidal activity against Gram-negative bacteria, the first agent from the monobactam family to be therapeutically approved. It was developed and validated analytical method using high performance liquid chromatography with UV detection at 292 nm to quantify the aztreonam. Furthermore, assessing stability through stress tests was carried out. The chromatographic separation was carried out by reverse phase on an Agilent C18 column (250 x 4.6 mm, 5 µm) with a mobile phase composed of water:ethanol (70:30, v/v) adjusted to pH 2.5 with acetic acid, pumped isocratically at a flow rate of 0.5 mL/min. The validation parameters linearity, selectivity, precision, accuracy, robustness, limits of detection and quantification were determined. The method proposed provides linear response within the concentration range of 45-95 µg/mL for aztreonam. Results obtained were found to be satisfactory. The proposed method is linear, accurate, precise, selective, and robust being able to quantify the aztreonam in raw material and in pharmaceutical preparations. The validated method was suitable for applications in quality control laboratories

Uma arquitetura para a integração e interoperabilidade de sistemas de informações geográficas

In the field of Geographical Information Systems (GIS), the interoperability is seen as a problem associated with the formalization of the geographic concepts in the digital systems, facing semantic problems derivatives of the use of different models of data. Thus, one of the main features of the next generation of GIS will be to share information from different sources. For this, is necessary to incorporate to the GIS the philosophy of open systems. Otherwise, nowadays is widely accepted that the hypermedia functionalities can to play a very important role as underlying component (linking/relationship) in an information system. Systems as the WWW (World Wide Web) have illustrated as the global access to the information is crucial. For many, the WWW was the way through which was introduced the concept of Open Hypermedia Systems (OHS), demonstrating its potential to supply a paradigm integrated and unified of organization of the information.. Thus, leading in consideration the problem of interoperability and integration of GIS, and the features and functionalities offered for the Open Hypermedia Systems, in this paper is to present OHGIS (Open Hypermedia Geographical Information System), an alternative architecture for GIS, using the OHS filosofy as central paradigm for the definition of this architecture.Na área de Sistemas de Informações Geográficas (SIGs), a interoperabilidade é vista como um problema associado á formalização dos conceitos geográficos nos sistemas digitais, enfrentando problemas semânticos derivados do uso de diferentes modelos de dados. Assim, uma das principais características da próxima geração de SIGs será compartilhar informações de diferentes fontes. Para isso, se necessita incorporar aos SIGs a filosofia de sistemas abertos. Por outro lado, hoje em dia é amplamente aceito que as funcionalidades hipermídia podem cumprir um papel muito importante como componente subjacente (ligação/relacionamento) num sistema de informação. Sistemas como a WWW (World Wide Web) têm ilustrado como é crucial o acesso global á informação. Para muitos, a WWW foi o meio através do qual se introduziu o conceito de Sistemas Hipermídia Abertos (SHA), demonstrando seu potencial para fornecer um paradigma integrado e unificado de organização da informação. Como conseqüência, levando em consideração tanto o problema de interoperabilidade e integração dos SIG’s, quanto as características e funcionalidades oferecidas pelos SHA, neste trabalho é apresentada SIGHA (Sistema de Informações Geográficas Hipermídia e Aberto), uma arquitetura alternativa para SIGs, utilizando os SHA como paradigma central para a definição desta arquitetura.Eje: Ingeniería de softwareRed de Universidades con Carreras en Informática (RedUNCI

Uma arquitetura para a integração e interoperabilidade de sistemas de informações geográficas

In the field of Geographical Information Systems (GIS), the interoperability is seen as a problem associated with the formalization of the geographic concepts in the digital systems, facing semantic problems derivatives of the use of different models of data. Thus, one of the main features of the next generation of GIS will be to share information from different sources. For this, is necessary to incorporate to the GIS the philosophy of open systems. Otherwise, nowadays is widely accepted that the hypermedia functionalities can to play a very important role as underlying component (linking/relationship) in an information system. Systems as the WWW (World Wide Web) have illustrated as the global access to the information is crucial. For many, the WWW was the way through which was introduced the concept of Open Hypermedia Systems (OHS), demonstrating its potential to supply a paradigm integrated and unified of organization of the information.. Thus, leading in consideration the problem of interoperability and integration of GIS, and the features and functionalities offered for the Open Hypermedia Systems, in this paper is to present OHGIS (Open Hypermedia Geographical Information System), an alternative architecture for GIS, using the OHS filosofy as central paradigm for the definition of this architecture.Na área de Sistemas de Informações Geográficas (SIGs), a interoperabilidade é vista como um problema associado á formalização dos conceitos geográficos nos sistemas digitais, enfrentando problemas semânticos derivados do uso de diferentes modelos de dados. Assim, uma das principais características da próxima geração de SIGs será compartilhar informações de diferentes fontes. Para isso, se necessita incorporar aos SIGs a filosofia de sistemas abertos. Por outro lado, hoje em dia é amplamente aceito que as funcionalidades hipermídia podem cumprir um papel muito importante como componente subjacente (ligação/relacionamento) num sistema de informação. Sistemas como a WWW (World Wide Web) têm ilustrado como é crucial o acesso global á informação. Para muitos, a WWW foi o meio através do qual se introduziu o conceito de Sistemas Hipermídia Abertos (SHA), demonstrando seu potencial para fornecer um paradigma integrado e unificado de organização da informação. Como conseqüência, levando em consideração tanto o problema de interoperabilidade e integração dos SIG’s, quanto as características e funcionalidades oferecidas pelos SHA, neste trabalho é apresentada SIGHA (Sistema de Informações Geográficas Hipermídia e Aberto), uma arquitetura alternativa para SIGs, utilizando os SHA como paradigma central para a definição desta arquitetura.Eje: Ingeniería de softwareRed de Universidades con Carreras en Informática (RedUNCI

Multiple Centroid Methodology to analyze genotype adaptability

This study was carried out to propose a modification of the centroid method. The method is modified in thechoice of the ideotype, to be defined according to the researcher's interest, using the bi-segmented regression model, ratherthan based on experimental data, which limit the comparison of genotypes. To illustrate the method, one trait was simulatedin 25 genotypes in 8 environments. For the simulations and statistical analyses the software package GENES was used. Themultiple centroid is more flexible than the original centroid method, since it can be used according to the researcher's objectiveand the desired recommendation strategy. It is also readily interpretable for recommendation and unambiguous. Besides, thenumber of genotypes of interest can be compared, making a detailed study possible, by separating the genotypes intorecommendation classes

Caracterización de una cepa nativa de saccharomyces cerevisiae para obtener un biopreparado con perfil probiótico

Generation of organic wastes is a worldwide environmental issue, although, if properly handled they may be a valuable source of animal nutrients. The objective was to determine the performance of a wild strain Saccharomyces cerevisiae in a biopreparation from ruminal content enriched with peels of fruits. Probiotic properties of the wild strain such as tolerance to bile salts, pH changes, changes in temperature, high concentrations of sodium chloride; additional to antagonism testing and gas production from glucose were verified in vitro. Microbial growth was evaluated in a medium prepared from clarified ruminal content 40 % v/v, enriched with peel wastes from papaya, pineapple and banana at 25, 50, and 75 % w/w concentrations. Results showed that wild strain had a higher growth in the medium obtained with 50 % w/v fruit wastes. Growth of the strain in this medium disclosed the highest biomass production at 40 hours (2.28x108 cfu·mL-1 ). The viability of the strain showed no important decrease during two months in the log scale of the inoculum. It is concluded that ruminal content enriched with fruit peels provides necessary nutrients for growth of the wild strain S. cerevisiae with probiotic characteristics and the biopreparation represents a supplement which may be useful not only at nutritional level but also to decrease environmental impact caused by these organic wastes.La generación de desechos orgánicos es un problema medioambiental mundial, aunque, si se maneja adecuadamente, puede ser una valiosa fuente de nutrientes para animales. El objetivo fue determinar el rendimiento de una cepa silvestre de Saccharomyces cerevisiae en un biopreparado a partir de contenido ruminal enriquecido con cáscaras de frutas. Se verificaron in vitro las propiedades probióticas de la cepa como tolerancia a sales biliares, cambios de pH, cambios de temperatura y altas concentraciones de cloruro de sodio, así como de pruebas de antagonismo y producción de gas a partir de la glucosa. Se evaluó el crecimiento microbiano en el medio elaborado a partir del contenido ruminal al 40% v/v, enriquecido con desechos de cáscaras de papaya, piña y banano en concentraciones de 25, 50 y 75 %. El mayor crecimiento se produjo en el medio con 50 % de desechos de frutas y la cepa reveló la mayor producción de biomasa a las 40 horas (2,28x108 ufc·mL-1 ). Su viabilidad no presentó disminución importante en la escala logarítmica del inóculo durante dos meses. Se concluye que el contenido ruminal enriquecido con cáscaras de frutas al 50 %, proporciona los nutrientes necesarios para el crecimiento de S. cerevisiae con características probióticas, y el biopreparado representa un suplemento que no solo puede ser benéfico a nivel nutricional, sino que también disminuiría el impacto ambiental ocasionado por estos desechos orgánicos

Condições ambientais em incubadora de múltiplo estágio: um estudo de caso

A produção de pintinhos de um dia é um dos segmentos mais importantes da cadeia avícola. O ambiente de incubação de frangos de corte precisa ser homogêneo e adequado de modo a não afetar a eclodibilidade e a qualidade do produto final. Avaliaram-se as condições de ambiência no interior de incubadora de estágio múltiplo durante um lote de produção em incubatório comercial. A incubadora foi dividida em seis quadrantes em cujo centro geométrico foram colocados registradores de valores de temperatura e umidade relativa. A concentração de dióxido de carbono, bem como o número de unidades formadoras de colônias (CFU) de fungos também foram amostradas nos mesmos locais; o teste não paramétrico de Kruskal-Wallis foi utilizado para análise estatística. Foram detectadas diferenças na distribuição de temperatura e umidade relativa no interior da incubadora (p ; 0,05). A incidência de fungos variou de média a boa. Pontos críticos foram detectados em todas as áreas dentro da incubadora.Production of one day-old chick production is one of the most important segments in the poultry production business. Broiler chicken incubation environment needs to be homogeneous and adequate so hatchability and final product quality are not affected. This research aimed at evaluating environmental conditions inside a multi-stage setter in a commercial hatchery house. The incubator was split into six areas and data loggers placed in the geometric center to register temperature and relative humidity data; carbon dioxide concentration and number of colony forming units (CFU) of fungi were also sampled and analyzed; Kruskal-Wallis non-parametric test was used for statistical analysis; significant differences in temperature and relative humidity distribution inside the incubator (p ; 0.05). Fungi incidence varied from average to good. Critical points were detected in all areas inside the setter

Infering trust in web-based social networks: an analysis from TidalTrust and T-SWEETS algorithms

This work presents an analysis between two approaches for inferring trust in social networks: TidalTrust and T-SWEETS. The first part of this research is composed by an experiment with the Epinions, Slashdot and Wikipedia datasets in order to define the most suitable type of trust value (integer or fractioned, positive or negative, and so on). Furthermore, the second part of this research reports a comparative analysis between both algorithms. The results indicate that T-SWEETS outperforms TidalTrust in terms of accuracy and maintains the transitivity principle, which is the basic principle of trust.f trust

EFFECTIVENESS OF AN EDUCATIONAL INTERVENTION FOR THE PREVENTION OF PERIPHERAL VENOUS CATHETER COMPLICATIONS

Objective: To evaluate the effectiveness of an evidence-based practice educational intervention in preventing peripheral venous catheter complications.Method: observational study with educational intervention for nursing professionals of a hospital in Minas Gerais, Brazil, about flushing, push-pause and locking techniques. Convenience sampling: 181 catheters in the pre-intervention group and 157 in the post-intervention group. The incidence of complications was evaluated and compared by the Chi-square and Fisher's exact tests.Results: the incidence of complications in the post-intervention group was: 4.5% for obstruction (p=0.000), 10.8% for accidental removal (p=0.265) and 1.9% for phlebitis (p=0.847). The use of the flushing, push-pause and locking techniques resulted in a significant reduction in the incidence of obstruction.Conclusion: the educational intervention enabled updated knowledge and the implementation of flushing, push-pause and locking in nursing practices. The study is a contribution to nursing intervention planning to reduce the occurrence of obstruction