207 research outputs found

    A Call for Executable Linguistics Research

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    PACLIC / The University of the Philippines Visayas Cebu College Cebu City, Philippines / November 20-22, 200

    The impacts construction traffic has on pavements within residential subdivisions

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    The aim of this research project is to ascertain that if during the first year of an access streets design life, the road pavement is subjected to a peak in the traffic loadings. This peak is a result of the heavy vehicles used in the construction of residential dwellings. From the reviewed literature it is evident that passenger vehicles have very little effect on the pavement and heavy vehicles are the main cause of structural pavement failures. This puts a burden on the community as the local government must divert funding to rehabilitate a pavement asset which has failed prematurely. Throughout this research project falling weight deflectometer (FWD) testing has been utilised, this is an appropriate testing method that is widely adopted by Transport and Main Roads (TMR). The non-destructive testing determined the structural characteristics of a number of existing access streets within North Shore Estate. The roads were selected to achieve a varied cross section of different access street pavements for the research. Analysis of this FWD test data highlighted that a number of roads had failed to meet the minimum deflection limits set by TMR which suggest the pavement has been impacted by the vehicles used in residential dwelling construction. An alternative method for calculating the design Equivalent Standard Axles (ESA) has been developed to ensure the access street pavements can withstand the initial peak in the number of heavy vehicles during the first year. When applied to the Austroads pavement design charts, an increase in gravel thickness of approximately 30mm was required when compared to tradition Design ESA calculation methods. Further research and field testing of the alternative access street pavement designs are required to ensure this alternative design method can be endorsed and enforced by local government authorities

    Ontologies across disciplines

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    Translating expert system rules into Ada code with validation and verification

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    The purpose of this ongoing research and development program is to develop software tools which enable the rapid development, upgrading, and maintenance of embedded real-time artificial intelligence systems. The goals of this phase of the research were to investigate the feasibility of developing software tools which automatically translate expert system rules into Ada code and develop methods for performing validation and verification testing of the resultant expert system. A prototype system was demonstrated which automatically translated rules from an Air Force expert system was demonstrated which detected errors in the execution of the resultant system. The method and prototype tools for converting AI representations into Ada code by converting the rules into Ada code modules and then linking them with an Activation Framework based run-time environment to form an executable load module are discussed. This method is based upon the use of Evidence Flow Graphs which are a data flow representation for intelligent systems. The development of prototype test generation and evaluation software which was used to test the resultant code is discussed. This testing was performed automatically using Monte-Carlo techniques based upon a constraint based description of the required performance for the system

    Foundational Ontologies meet Ontology Matching: A Survey

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    Ontology matching is a research area aimed at finding ways to make different ontologies interoperable. Solutions to the problem have been proposed from different disciplines, including databases, natural language processing, and machine learning. The role of foundational ontologies for ontology matching is an important one. It is multifaceted and with room for development. This paper presents an overview of the different tasks involved in ontology matching that consider foundational ontologies. We discuss the strengths and weaknesses of existing proposals and highlight the challenges to be addressed in the future

    Challenges and opportunities in transdisciplinary science: The experience of next generation scientists in an agriculture and climate research collaboration

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    Agriculture in the twenty-first century faces unprecedented challenges from increasing climate variability to growing demands on natural resources to globalizing economic markets. These emerging agricultural issues, spanning both human and natural dimensions, are uniquely formulated, exceedingly complex, and difficult to address within existing disciplinary domains (Eigenbrode et al. 2007; Reganold et al. 2011; Foley et al. 2005; Hansen et al. 2013). Therefore, the next generation of scientists working on these issues must not only be highly trained within a disciplinary context but must also have the capacity to collaborate with others to solve systems-level problems

    Pulmonary epithelial cell-derived cytokine TGF-β1 Is a critical cofactor for enhanced innate lymphoid cell function

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    SummaryEpithelial cells orchestrate pulmonary homeostasis and pathogen defense and play a crucial role in the initiation of allergic immune responses. Maintaining the balance between homeostasis and inappropriate immune activation and associated pathology is particularly complex at mucosal sites that are exposed to billions of potentially antigenic particles daily. We demonstrated that epithelial cell-derived cytokine TGF-β had a central role in the generation of the pulmonary immune response. Mice that specifically lacked epithelial cell-derived TGF-β1 displayed a reduction in type 2 innate lymphoid cells (ILCs), resulting in suppression of interleukin-13 and hallmark features of the allergic response including airway hyperreactivity. ILCs in the airway lumen were primed to respond to TGF-β by expressing the receptor TGF-βRII and ILC chemoactivity was enhanced by TGF-β. These data demonstrate that resident epithelial cells instruct immune cells, highlighting the central role of the local environmental niche in defining the nature and magnitude of immune reactions

    Pulmonary Epithelial Cell-Derived Cytokine TGF-β1 Is a Critical Cofactor for Enhanced Innate Lymphoid Cell Function.

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    Epithelial cells orchestrate pulmonary homeostasis and pathogen defense and play a crucial role in the initiation of allergic immune responses. Maintaining the balance between homeostasis and inappropriate immune activation and associated pathology is particularly complex at mucosal sites that are exposed to billions of potentially antigenic particles daily. We demonstrated that epithelial cell-derived cytokine TGF-β had a central role in the generation of the pulmonary immune response. Mice that specifically lacked epithelial cell-derived TGF-β1 displayed a reduction in type 2 innate lymphoid cells (ILCs), resulting in suppression of interleukin-13 and hallmark features of the allergic response including airway hyperreactivity. ILCs in the airway lumen were primed to respond to TGF-β by expressing the receptor TGF-βRII and ILC chemoactivity was enhanced by TGF-β. These data demonstrate that resident epithelial cells instruct immune cells, highlighting the central role of the local environmental niche in defining the nature and magnitude of immune reactions
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