4,812 research outputs found

    Automatically linking MEDLINE abstracts to the Gene Ontology

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    Much has been written recently about the need for effective tools and methods for mining the wealth of information present in biomedical literature (Mack and Hehenberger, 2002; Blagosklonny and Pardee, 2001; Rindflesch et al., 2002)—the activity of conceptual biology. Keyword search engines operating over large electronic document stores (such as PubMed and the PNAS) offer some help, but there are fundamental obstacles that limit their effectiveness. In the first instance, there is no general consensus among scientists about the vernacular to be used when describing research about genes, proteins, drugs, diseases, tissues and therapies, making it very difficult to formulate a search query that retrieves the right documents. Secondly, finding relevant articles is just one aspect of the investigative process. A more fundamental goal is to establish links and relationships between facts existing in published literature in order to “validate current hypotheses or to generate new ones” (Barnes and Robertson, 2002)—something keyword search engines do little to support

    Evaluation and Mitigation of Bird Hazards in Ex-Vaso de Texcoco: The Proposed Site of a New International Airport for Mexico City

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    If Mexico is to meet increasing demands for air travel, a new international airport for Mexico City must be constructed. At the request of the Secretaria de Comunicaciones y Transportes (SCT), we evaluated Ex-Vaso de Texcoco (EVT), one of several sites considered for construction of the new airport, to determine if birds would pose an unacceptable risk to aircraft. Aerial (by helicopter) and ground surveys were conducted on 6 occasions during fall and winter from 1996-2002 to census birds and evaluate aquatic habitats at EVT and other locations in the Valley of Mexico. Total populations estimates for waterfowl and shorebirds using EVT ranged from 29,000 to 77,000 (mean = 48,300). The majority of birds observed (70%) were south of the Carretera Peñon Texcoco (CPT), the highway that bisects EVT. The wetlands north of the CPT contained about 3% of the ducks and 3% of the coots in the Mexican Highland\u27s wintering population. We concluded that an airport could be constructed in EVT north of the CPT without a significant bird-strike threat, provided habitats attractive to birds were not allowed within 3.2 km of the airport\u27s aircraft movement areas, and conditions were not created that would encourage birds to over-fly the airport or move into or through the airport\u27s approach/departure airspace. We recommended that wetland losses due to airport construction north of CPT should be off set by enhancing and expanding wetlands identified elsewhere in the Valley of Mexico to ensure no net loss of wetlands within the valley. Our investigation of bird issues was only one of numerous technical and economic studies conducted regarding the site selection and design of the new airport for Mexico City. Based on the conclusions of all these studies, of which birds were only one factor, an area in EVT north of CPT was selected in October 2001 as the site for the new airport. Our study demonstrated the importance of including the evaluation of bird hazards in the site-selection and design phases for any airport

    From Personal Autonomy to Death-on-Demand : Will Purdy v. DPP Legalize Assisted Suicide in the United Kingdom?

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    Debates over end-of-life issues and the “right to die” are becoming increasingly prevalent in many modern societies. In July 2009 the House of Lords addressed the question of whether the legal framework governing assisted suicide in the United Kingdom constitutes an unjustifiable infringement on privacy rights. The court decided that question in the affirmative, and this Note discusses the implications of Purdy v. Director of Public Prosecutions for the legality of assisted suicide in the United Kingdom. This Note uses evidence of legal developments in other jurisdictions that have grounded the right to assisted suicide in personal autonomy to argue that the Purdy court’s reasoning and the Director of Public Prosecution’s response to the decision paves the way for a gradual breakdown in restrictions on the practice

    WATERFOWL

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    The term waterfowl is properly applied only to ducks, geese, and swans. In North America, most waterfowl are migratory, flying long distances in the spring and fall between the summer breeding grounds and wintering areas. Waterfowl, as their name implies, are most often found near water. The food of individual waterfowl species ranges from fish to insects to plants in various combinations, depending on availability. Waterfowl are normally monogamous and solitary nesters. Goose problems in urban and suburban areas are primarily caused by giant Canada geese, which are probably the most adaptable of all waterfowl. In the United States, migratory birds, including most waterfowl, as well as their nests and eggs, are federally protected (50 CFR 10.12) by the Migratory Bird Treaty Act (MBTA) (16 USC)

    Aspects of the life and works of Dancourt

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    The opening chapters of the thesis illustrate, with the help of authentic documents, details of Dancourt's biography both from the point of view of his domestic life and his career at the Comédie Française. Then follows a study of his prologues from which we gain an insight into his dramatic theories and aspects of life in the contemporary theatre. Chapter IV offers a review of Dancourt's complete works, and traces his evolution in choice of subject-matter and manner of presentation. His plays are studied in relation to a wide variety of dramatic works his predecessors and contemporaries. Chapter V concerns that part of Dancourt's work which is devoted to topics of contemporary interest. These include his satire of certain individuals, his exploitation of contemporary events and his satire of rival forms of entertainment. All these points are treated with reference to the relevant historical, social and literary background. The next two chapters centre around the 'social' content of Dancourt's plays which dramatize the manners of fashionable Parisian society, both aristocratic and bourgeois. These plays are explained with reference to the realities from which they sprang, as well as to works by writers of other forms of literature. Chapter VIII illustrates the importance of rustic themes in Dancourt's plays. Unlike in the previous chapter, the emphasis is placed on the dramatic qualities of these comedies and on their character portrayal rather than on what light they throw on the social scene. Finally, Chapter IX offers an estimate of Dancourt's success as a playwright at the Comédie Française and at Court both during his lifetime and posthumously. A comparison is made between his success and the criticism offered by contemporary and eighteenth-century commentators whose opinions are studied in the light of prevailing trends of literary criticism

    Evaluation and Mitigation of Bird Hazards in Ex-Vaso de Texcoco: The Proposed Site of a New International Airport for Mexico City

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    If Mexico is to meet increasing demands for air travel, a new international airport for Mexico City must be constructed. At the request of the Secretaria de Comunicaciones y Transportes (SCT), we evaluated Ex-Vaso de Texcoco (EVT), one of several sites considered for construction of the new airport, to determine if birds would pose an unacceptable risk to aircraft. Aerial (by helicopter) and ground surveys were conducted on 6 occasions during fall and winter from 1996-2002 to census birds and evaluate aquatic habitats at EVT and other locations in the Valley of Mexico. Total populations estimates for waterfowl and shorebirds using EVT ranged from 29,000 to 77,000 (mean = 48,300). The majority of birds observed (70%) were south of the Carretera Peñon Texcoco (CPT), the highway that bisects EVT. The wetlands north of the CPT contained about 3% of the ducks and 3% of the coots in the Mexican Highland\u27s wintering population. We concluded that an airport could be constructed in EVT north of the CPT without a significant bird-strike threat, provided habitats attractive to birds were not allowed within 3.2 km of the airport\u27s aircraft movement areas, and conditions were not created that would encourage birds to over-fly the airport or move into or through the airport\u27s approach/departure airspace. We recommended that wetland losses due to airport construction north of CPT should be off set by enhancing and expanding wetlands identified elsewhere in the Valley of Mexico to ensure no net loss of wetlands within the valley. Our investigation of bird issues was only one of numerous technical and economic studies conducted regarding the site selection and design of the new airport for Mexico City. Based on the conclusions of all these studies, of which birds were only one factor, an area in EVT north of CPT was selected in October 2001 as the site for the new airport. Our study demonstrated the importance of including the evaluation of bird hazards in the site-selection and design phases for any airport

    Properties of high emittance materials

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    High emittance coating materials for beryllium, niobium-zirconium compounds, and stainless steel used in spacecraft radiator

    Fast Hands-free Writing by Gaze Direction

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    We describe a method for text entry based on inverse arithmetic coding that relies on gaze direction and which is faster and more accurate than using an on-screen keyboard. These benefits are derived from two innovations: the writing task is matched to the capabilities of the eye, and a language model is used to make predictable words and phrases easier to write.Comment: 3 pages. Final versio

    Low power laser generated ultrasound : signal processing for time domain data acquisition

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    The use of low power modulated laser diode systems has previously been established as a suitable method for non-destructive laser generation of ultrasound. Using a quasi-continuous optical excitation amplified by an erbium-doped fibre amplifier (EDFA) allows flexible generation of ultrasonic waves, offering control of further parameters such as the frequency content or signal shape. In addition, pseudo-random binary sequences (PRBS) can be used to improve the detected impulse response. Here we compare two sequences, the m-sequence and the Golay code, and discuss the advantages and practical limits of their application with laser diode based optical excitation of ultrasound
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