998 resultados para H. Paul Douglas Lecture


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A gyrostabiliser control system and method for stabilising marine vessel motion based on precession information only. The control system employs an Automatic Gain Control (AGC) precession controller (60). This system operates with a gain factor that is always being gradually minimized so as to let the gyro flywheel (12) develop as much precession as possible - the higher the precession, the higher the roll stabilising moment. This continuous gain change provides adaptation to changes in sea state and sailing conditions. The system effectively predicts the likelihood of maximum precession being reached. Should this event be detected, then the gain is rapidly increased so as to provide a breaking precession torque. Once the event has passed, the system again attempts to gradually decrease the gain.

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A vessel stabilizer control system includes a sensor fault detection means which senses the availability of sensing signals from a gyrostabilizer precession motion sensor and a vessel roll motion sensor. The control system controls the action of a gyro-actuator which is mechanically coupled to a gyrostabilizer. The benefit of employing fault sensing of the sensors providing the process control variables is that the sensed number of available process control variables (or sensors) can be used to activate a tiered system of control modes. Each tiered control mode is designed to utilize the available process control variables to ensure safe and effective operation of the gyrostabilizer that is tolerant of sensor faults and loss of power supply. A control mode selector is provided for selecting the appropriate control mode based on the number of available process control variables.

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Respiratory syncytial virus (RSV) is a major pathogen that primarily infects airway epithelium. Most infants suffer mild upper respiratory tract (URT) symptoms, while approximately one third progress to lower respiratory tract (LRT) involvement. Despite the ubiquity of URT infection, little is known about the relative cytopathogenesis of RSV infection in infant URT and LRT.

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o artigo descreve o programa de rastreamento de câncer de colo de útero em uma população de mulheres de 20-59 anos, usuárias de um serviço de Atenção Primária à Saúde (APS), em Porto Alegre. Esta coorte histórica de 5 anos foi constituída usando os registros de família de três unidades do Serviço de Saúde Comunitária do Grupo Hospitalar Conceição, em Porto Alegre, Brasil. O estudo caracteriza a associação entre a detecção de hipertensão, diabetes, depressão e ansiedade nestas mulheres, e as freqüências de sua captação e adesão ao programa de rastreamento do câncer de colo de útero. As mulheres com 50 anos ou mais tiveram um risco relativo de 1,70 (IC95%=1,40-2,06) de não serem captadas pelo programa de rastreamento, quando comparadas com as mais jovens. Os resultados sugerem a necessidade de intensificar o rastreamento de rotina às mulheres de 50 anos ou mais. A captação e a adesão de usuárias poderiam ser usadas como indicadores da qualidade do processo de trabalho. São necessários novos estudos para o estabelecimento de inferência causal e para definir a captação e a adesão como indicadores da qualidade do processo de trabalho em Atenção Primária à Saúde.

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Automatic ontology building is a vital issue in many fields where they are currently built manually. This paper presents a user-centred methodology for ontology construction based on the use of Machine Learning and Natural Language Processing. In our approach, the user selects a corpus of texts and sketches a preliminary ontology (or selects an existing one) for a domain with a preliminary vocabulary associated to the elements in the ontology (lexicalisations). Examples of sentences involving such lexicalisation (e.g. ISA relation) in the corpus are automatically retrieved by the system. Retrieved examples are validated by the user and used by an adaptive Information Extraction system to generate patterns that discover other lexicalisations of the same objects in the ontology, possibly identifying new concepts or relations. New instances are added to the existing ontology or used to tune it. This process is repeated until a satisfactory ontology is obtained. The methodology largely automates the ontology construction process and the output is an ontology with an associated trained leaner to be used for further ontology modifications.

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This article presents a very close analysis of one poem by Paul Celan, demonstrating the important place of Jewish mysticism in his poetry and poetics.

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Two handwritten drafts of the Dudleian lecture delivered by Amos Adams on May 9, 1770 at Harvard College written in the same hand. The sermon begins with the Biblical text Titus 1:5. The first copy (HUC 5340.70) is bound between black paper covers and includes edits and citations written on interleaved pages. The second copy (HUC 5340.70.2) appears to be a subsequent draft of the address with additional edits.

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The hand-sewn notebook contains a manuscript draft of the Dudleian lecture delivered by Thomas Barnard on September 3, 1795 at Harvard College. The sermon begins with the Biblical text Acts 14-57. The copy includes a small number of edits and struck-out words. The covers are no longer with the item.

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Dayton author.