7,969 research outputs found

    Eventos: ferramentas estratégicas de comunicação.

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    A Comunicação Organizacional na Empresa Brasileira de Pesquisa Agropecuária (Embrapa) é definida, em sua política, como um processo gerencial permanente e sistêmico, que integra as atividades de relacionamento entre organização e públicos, tendo como objetivo criar e manter os fluxos de informação. Nesse contexto a promoção e realização de eventos é uma das ferramentas de comunicação usadas estrategicamente com o objetivo de criar e reforçar relacionamentos entre empresa e públicos de interesse, bem como apoiar o processo de transferência de tecnologia na Embrapa

    Structured lexical similarity via convolution Kernels on dependency trees

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    A central topic in natural language process-ing is the design of lexical and syntactic fea-tures suitable for the target application. In this paper, we study convolution dependency tree kernels for automatic engineering of syntactic and semantic patterns exploiting lexical simi-larities. We define efficient and powerful ker-nels for measuring the similarity between de-pendency structures, whose surface forms of the lexical nodes are in part or completely dif-ferent. The experiments with such kernels for question classification show an unprecedented results, e.g. 41 % of error reduction of the for-mer state-of-the-art. Additionally, semantic role classification confirms the benefit of se-mantic smoothing for dependency kernels.

    Reading what machines “think”: a challenge for nanotechnology

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    MUN Chamber Choir, conductor: D.F. Cook (April 29-May 3, 1979)

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    MUN Chamber Choir, conductor D.F. Cook (April 29-May 3, 1979

    Surface roughness effect on ultracold neutron interaction with a wall and implications for computer simulations

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    We review the diffuse scattering and the loss coefficient in ultracold neutron reflection from slightly rough surfaces, report a surprising reduction in loss coefficient due to roughness, and discuss the possibility of transition from quantum treatment to ray optics. The results are used in a computer simulation of neutron storage in a recent neutron lifetime experiment that re-ported a large discrepancy of neutron lifetime with the current particle data value. Our partial re-analysis suggests the possibility of systematic effects that were not included in this publication.Comment: 39 pages, 9 figures; additional calculations include

    How Many Templates for GW Chirp Detection? The Minimal-Match Issue Revisited

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    In a recent paper dealing with maximum likelihood detection of gravitational wave chirps from coalescing binaries with unknown parameters we introduced an accurate representation of the no-signal cumulative distribution of the supremum of the whole correlator bank. This result can be used to derive a refined estimate of the number of templates yielding the best tradeoff between detector's performance (in terms of lost signals among those potentially detectable) and computational burden.Comment: submitted to Class. Quantum Grav. Typing error in eq. (4.8) fixed; figure replaced in version

    Exploiting programmable architectures for WiFi/ZigBee inter-technology cooperation

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    The increasing complexity of wireless standards has shown that protocols cannot be designed once for all possible deployments, especially when unpredictable and mutating interference situations are present due to the coexistence of heterogeneous technologies. As such, flexibility and (re)programmability of wireless devices is crucial in the emerging scenarios of technology proliferation and unpredictable interference conditions. In this paper, we focus on the possibility to improve coexistence performance of WiFi and ZigBee networks by exploiting novel programmable architectures of wireless devices able to support run-time modifications of medium access operations. Differently from software-defined radio (SDR) platforms, in which every function is programmed from scratch, our programmable architectures are based on a clear decoupling between elementary commands (hard-coded into the devices) and programmable protocol logic (injected into the devices) according to which the commands execution is scheduled. Our contribution is two-fold: first, we designed and implemented a cross-technology time division multiple access (TDMA) scheme devised to provide a global synchronization signal and allocate alternating channel intervals to WiFi and ZigBee programmable nodes; second, we used the OMF control framework to define an interference detection and adaptation strategy that in principle could work in independent and autonomous networks. Experimental results prove the benefits of the envisioned solution

    EH 89-12A COOPERATIVE STUDY OF THE ENVIRONMENTAL HAZARDS ASSESSHENT PROGRAM AND THE SAN JOAQUIN COUNTY AGRICULTURAL COMMISSIONER TO DETERHINE THE USEFULNESS OF GRAPE PLANTS AS BIWNITORS FOR 2,4-D

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    Injury to non-target crops after application of 2,4-D to target crops is a continuing problem in California. Grape vineyards in the Lodi area of San Joaquin County have exhibited 2,4-D-like symptoms periodically in the spring, presumably as the result of drift from 2,4-D application to other cr,ops. Past studies using traditional air monitoring equipment were expensive and did not successfully identify the source of 2,4-D-like symptoms occurring on non-target crops. Therefore, an inexpensive biomonitoring grid using grape plants was established in San Joaquin County in an attempt to indicate off-target movement of 2,4-D. The results from the first year's operation of the biomonitoring grid showed it was logistically possible to establish grape cuttings and maintain healthy plants for the purpose of monitoring for 2,4-D. The cost of establishing and maintaining the ten square mile grid from February through June was approximately $3,000. Although a complete assessment of the usefulness of the biomonitoring grid was limited because 2,4-D-type few symptoms occurred in the county, the county plans to continue the grid for the foreseeable future. If widespread 2,Q-D-like symptoms occur again, the grid may help identify the source of the symptoms and lead to a possible solution to the problem. i The authors would like to thank th

    Comparing league formats with respect to match importance in Belgian football

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    Recently, most clubs in the highest Belgian football division have become convinced that the format of their league should be changed. Moreover, the TV station that broadcasts the league is pleading for a more attractive competition. However, the clubs have not been able to agree on a new league format, mainly because they have conflicting interests. In this paper, we compare the current league format, and three other formats that have been considered by the Royal Belgian Football Association. We simulate the course of each of these league formats, based on historical match results. We assume that the attractiveness of a format is determined by the importance of its games; our importance measure for a game is based on the number of teams for which this game can be decisive to reach a given goal. Furthermore, we provide an overview of how each league format aligns with the expectations and interests of each type of club
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