241 resultados para RDF Reification


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El método de encuesta es un método de investigación de naturaleza lingüística y buena parte de las líneas de investigación elaboradas acerca de este método parecen haber obviado en buena medida esta característica. La relegación de la naturaleza lingüística del método de encuesta ha comportado un importante nivel de reificación de los elementos que se consideran implicados en él. Nos referimos fundamentalmente a las preguntas, a los entrevistadores y entrevistadoras, a las respuestas, a las personas encuestadas y a los propios instrumentos de las técnicas de investigación. Esta reificación ha transformado dichos elementos, en elementos objetivables y manipulables, y en cierta forma, desnudos de su principal característica: su significado y dimensión lingüística. Las repercusiones de este enfoque del método de encuesta han sido varias, entre ellas podemos destacar, por ejemplo, la reducción de lo lingüístico en los cuestionarios a meros enunciados casi métricos de preguntas, y la reducción de las respuestas a tan sólo marcas en diversas casillas. Este enfoque también ha propiciado que la figura del/de la entrevistador/a se convierta, por definición, en una fuente de sesgo, principalmente por sus características sociodemográficas, negándole una participación lingüística de interacción social en el método de encuesta. Igualmente, bajo esta perspectiva, la forma conversacional de la entrevista ha relegado a los cuestionarios a un mero intercambio de interrogaciones y monosílabos, o a un simple intercambio de papeles, olvidando precisamente que ni la entrevista es una conversación, ni los cuestionarios son elementos neutros en relación a la interacción lingüística de las personas implicadas en una situación de encuesta. Las hipótesis formuladas proponen en líneas generales, la recuperación de la naturaleza lingüística del método de encuesta, no tanto porque este método funcione a través de la palabra oral o escrita, como porque el lenguaje comporta una elaboración de significados compartidos en función de los mucho elementos que lo dimensionalizan. Entre estos elementos hemos destacado, en relación al método de encuesta, la propia situación de interacción condicionada por la técnica de investigación que se utilice (cuestionario autoadministrado, cuestionario entrevistado, entrevista), la persona encuestada, el/la interlocutor/a con el que la persona entra en contacto y con el que desarrol1ará la encuesta y el objeto sobre el cual va a ser preguntada la persona encuestada. En definitiva se trata de recuperar la importancia del contexto comunicativo y del "otro" simbólico en el proceso de obtención de información a través del método de encuesta. De forma más concreta las hipótesis tratan de poner de manifiesto la incidencia del objeto de interlocución, no tanto sobre los contenidos, sino sobre los procesos implicados en la interlocución. Igualmente las hipótesis sugieren que el modo de administración tiene efectos sobre los contenidos de respuesta, ya que los modos de administración son, en realidad, elementos contextuales de interlocución. Finalmente, las hipótesis tratan de otro elemento, el entrevistador o la entrevistadora sugiriendo que las interacciones de género, con sus puestas en juego de estereotipos, representaciones y prácticas tienen incidencia sobre los contenidos discursivos en función del contexto de interlocución y de la relevancia del tema. En este trabajo se han desarrollado dos investigaciones. En la primera investigación hemos tratado del tema del cuerpo y en la segunda de la educación. Se eligió el tema del cuerpo porque las hipótesis proponen la relevancia del contenido de interlocución en relación a la interacción comunicativa entre géneros, y consideramos que es una temática relativamente amenazante, ya que en la representación de lo público y lo privado pertenece más al dominio de lo privado que de lo público. La segunda investigación aborda el tema de la educación en contraste con la primera, es decir, su discurso pertenece al orden de lo público, de lo no amenazante y su interlocución está menos condicionada por las interacciones de género. Los resultados de las investigaciones nos permiten afirmar que la forma de administración no sólo es un medio de interrogación sino un contexto de interlocución, y que si bien el sexo como variable independiente tiene pocos efectos, el género está relacionado con los contenidos discursivos que se evidencian en la interlocución si existe una vinculación entre tema y contexto de género

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The main objective of this study is to revisit the fundamental postulations of autopoietic self-production wrapped within the autopoietic six-point key and to investigate whether or not firms as specific social systems can be treated as autopoietic unities. In order to do so firms have to be defined as simple and composite unities whereupon their boundaries have to be clearly identifiable. The test of social autopoiesis reveals that firms can be viewed as autopoietic social systems that exist in the communicative space with employees' firm-specific communicative sub-domains as their components. Furthermore, it is argued that the social reification of autopoiesis (autokoinopoiesis) in firms is quintessentially interconnected with physical autopoiesis of their employees (autophysiopoiesis). Discontiguous focus on productivity as firms' obvious physical implication may thus be upgraded by a very social nature of ideactivity, firms' only real survival force.

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An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature). The origin of the anomaly is explained using reverse domain filling (RDF) calculations combined with a PV/O3 fitting technique applied to ozone measurements from the Polar Ozone and Aerosol Measurement (POAM) III instrument. The RDF calculations for two isentropic surfaces, 550 and 600 K, show that ozone-poor air from the Antarctic polar vortex reached New Zealand on 24–26 December 1998. The vortex air on the 550 K isentrope originated in the ozone hole region, unlike the air on 600 K where low ozone values were caused by dynamical effects. High-resolution ozone maps were generated, and their examination shows that a vortex remnant situated above New Zealand was the cause of the altered ozone profile on 24 December. The maps also illustrate mixing of the vortex filaments into southern midlatitudes, whereby the overall mid-latitude ozone levels were decreased.

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Semantiska webben är ett begrepp som handlar om att göra data tillgängligt på ett sätt som gör att datorer kan söka, tolka och sätta data i ett sammanhang. Då mycket av datalagring idag sker i relationsdatabaser behövs nya sätt att omvandla och lagra data för att det ska vara tillgängligt för den semantiska webben.Forskning som genomförts har visat att transformering av data från relationsdatabaser till RDF som är det format som gör data sökbart på semantiska webben är möjlig men det finns idag ingen standardisering för hur detta ska ske.För att data som transformeras ska få rätt betydelse i RDF så krävs ontologier som beskriver olika begrepps relationer. Nationella vägdatabasen (NVDB) är en relationsdatabas som hantera geospatiala data som används i olika geografiska informationssystem (GIS). För samarbetspartnern Triona var det intressant att beskriva hur denna typ av data kan omvandlas för att passa den semantiska webben.Syftet var att analysera hur man överför geospatiala data från en relationsdatabas till den semantiska webben. Målet med studien var att skapa en modell för hur man överför geospatiala data till i en relationsdatabas till en RDF-lagring och hur man skapar en ontologi som passar för NVDB’s data och datastruktur.En fallstudie genomfördes med dokumentstudier utifrån en inledande litteraturstudie.En ontologi skapades för det specifika fallet och utifrån detta skapades en modell för hur man överför geospatiala data från NVDB till RDF via programvaran TripleGeo. Analysen har skett genom att transformerad data har analyserats med hjälp av befintlig teori om RDF och dess struktur och sedan jämföra och se så att data får rätt betydelse. Resultatet har också validerats genom att använda W3C’s tjänst för att validera RDF.Resultatet visar hur man transformerar data från en relationsdatabas med geospatiala data till RDF samt hur en ontologi för detta skapats. Resultatet visar också en modell som beskriver hur detta utförs och kan ses som ett försök till att generalisera och standardisera en metod för att överföra geospatiala data till RDF.

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The authors take a broad view that ultimately Grid- or Web-services must be located via personalised, semantic-rich discovery processes. They argue that such processes must rely on the storage of arbitrary metadata about services that originates from both service providers and service users. Examples of such metadata are reliability metrics, quality of service data, or semantic service description markup. This paper presents UDDI-MT, an extension to the standard UDDI service directory approach that supports the storage of such metadata via a tunnelling technique that ties the metadata store to the original UDDI directory. They also discuss the use of a rich, graph-based RDF query language for syntactic queries on this data. Finally, they analyse the performance of each of these contributions in our implementation.

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We take a broad view that ultimately Grid- or Web-services must be located via personalised, semantic-rich discovery processes. We argue that such processes must rely on the storage of arbitrary metadata about services that originates from both service providers and service users. Examples of such metadata are reliability metrics, quality of service data, or semantic service description markup. This paper presents UDDI-MT, an extension to the standard UDDI service directory approach that supports the storage of such metadata via a tunnelling technique that ties the metadata store to the original UDDI directory. We also discuss the use of a rich, graph-based RDF query language for syntactic queries on this data. Finally, we analyse the performance of each of these contributions in our implementation.

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Interoperability of water quality data depends on the use of common models, schemas and vocabularies. However, terms are usually collected during different activities and projects in isolation of one another, resulting in vocabularies that have the same scope being represented with different terms, using different formats and formalisms, and published in various access methods. Significantly, most water quality vocabularies conflate multiple concepts in a single term, e.g. quantity kind, units of measure, substance or taxon, medium and procedure. This bundles information associated with separate elements from the OGC Observations and Measurements (O&M) model into a single slot. We have developed a water quality vocabulary, formalized using RDF, and published as Linked Data. The terms were extracted from existing water quality vocabularies. The observable property model is inspired by O&M but aligned with existing ontologies. The core is an OWL ontology that extends the QUDT ontology for Unit and QuantityKind definitions. We add classes to generalize the QuantityKind model, and properties for explicit description of the conflated concepts. The key elements are defined to be sub-classes or sub-properties of SKOS elements, which enables a SKOS view to be published through standard vocabulary APIs, alongside the full view. QUDT terms are re-used where possible, supplemented with additional Unit and QuantityKind entries required for water quality. Along with items from separate vocabularies developed for objects, media, and procedures, these are linked into definitions in the actual observable property vocabulary. Definitions of objects related to chemical substances are linked to items from the Chemical Entities of Biological Interest (ChEBI) ontology. Mappings to other vocabularies, such as DBPedia, are in separately maintained files. By formalizing the model for observable properties, and clearly labelling the separate concerns, water quality observations from different sources may be more easily merged and also transformed to O&M for cross-domain applications.

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Este trabalho apresenta um modelo de metadados para descrever e recuperar imagens médicas na Web. As classes pertencentes ao modelo viabilizam a descrição de imagens de várias especialidades médicas, incluindo suas propriedades, seus componentes e as relações existentes entre elas. Uma das propriedades que o modelo incorpora é a classificação internacional de doenças, versão 10 (CID-10). O modelo de metadados proposto, inspirado em classes, favorece a especialização e sua implementação na arquitetura de metadados RDF. O modelo serviu de base para a implementação de um protótipo denominado de Sistema MedISeek (Medical Image Seek) que permite a usuários autorizados: descrever, armazenar e recuperar imagens na Web. Além disto, é sugerida uma estrutura persistente apropriada de banco de dados para armazenamento e recuperação dos metadados propostos.

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Nowadays, the popularity of the Web encourages the development of Hypermedia Systems dedicated to e-learning. Nevertheless, most of the available Web teaching systems apply the traditional paper-based learning resources presented as HTML pages making no use of the new capabilities provided by the Web. There is a challenge to develop educative systems that adapt the educative content to the style of learning, context and background of each student. Another research issue is the capacity to interoperate on the Web reusing learning objects. This work presents an approach to address these two issues by using the technologies of the Semantic Web. The approach presented here models the knowledge of the educative content and the learner’s profile with ontologies whose vocabularies are a refinement of those defined on standards situated on the Web as reference points to provide semantics. Ontologies enable the representation of metadata concerning simple learning objects and the rules that define the way that they can feasibly be assembled to configure more complex ones. These complex learning objects could be created dynamically according to the learners’ profile by intelligent agents that use the ontologies as the source of their beliefs. Interoperability issues were addressed by using an application profile of the IEEE LOM- Learning Object Metadata standard.

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EMAp - Escola de Matemática Aplicada

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Always seen by others eyes, unknown of the languages and other "realities" that constitute, the Africa, specially Mozambique, now (re)invent itself, palimpsestly, in narratives of your griots, narrators and/or storytellers. Our thesis intend, by the review of novel Under the frangipani, to demonstrate that the mozambican writer Mia Couto intends to participate the (re)construction of a devasted nation by war and conflicts, based on belief that the role writer "is to create requisites of a more african thought, to the assessment of your place and your time won't be done from categories created by others" (COUTO, 2005). At first, we show how the mozambican literary system consists itself; then, the insertion of coutian narrative against the prevalence tradition and, also, by the analysis of the constituent elements of the chosen novel, the way how made piece of resistance to reification, objectification of the individuald in the contemporary world , your writing will be present in this sharing of the sensitive. Besides Mia Couto, in our work we'll counting on the lessons of Candido, Noa, Hernandez, Adorno, Paz, Fonseca, Secco, among others studious of african narrative and, specially, Mozambique narrative

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There were detected variations of chlorophylls a and b during the senescence leaves period of Caryocar brasiliense Camb in the Corumbatai cerrado vegetation, State of São Paulo. The highest peak of total chlorophylls a and b contents was registered after the maximum leaves expansion, while the lowest peak it was obtained at leaves abcision. The chlorophylls a and b variations can be explained as a function of a chlorophyll a variation content. The phenological events studied (flowering and fruiting time, leaf fall and sprouting) showed a marked periodicity during the year. Flowering and fruiting time have a similar peak both in the wet season (september to february). Leaves fall occurred in the dry season with the peak in August.

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Aim. By taking nursing as a human relationships activity, in spite of its strong technical-scientific features, this article reflects on the phenomenological method as one of the ways to develop ail investigation and acquire knowledge of the topic.Rationale. Based on Husserl's phenomenology, which is opposed to the way of doing science based on the laws that regulate the physics and mathematics, the article introduces Merleau Ponty's existential phenomenology as the theoretical foundation for the method it proposes. My existential conceptions-people as historic beings inserted in a world over which they act but which, in its turn, determines them; the human perception as reference for our way of being in the world; the space-time structure of perception-these are the key concepts that have led to the elaboration of ail approach to phenomenological research.Proposal of a methodology. Steps are proposed for such ail approach, namely phenomenological description, reduction and analysis. These lead to the building up of ideographic and nomothetic analyses, thus unveiling and describing general truths about the phenomenon studied. Finally, the possibilities for applying the methodology to nursing research are discussed, illustrated by my research into student nurses' perspectives on working oil an isolation ward.