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47,835 research outcomes, page 1 of 4,784
  • publication . Article . Part of book or chapter of book . Preprint . Other literature type . 2005
    Open Access English
    Authors:
    Patrick Guillaumont; Jaime de Melo; Jaime de Melo; Jaime de Melo; Jean-François Brun; Céline Carrère;

    This paper reports panel gravity estimates of aggregate bilateral trade for 130 countries over the period 1962-96 in which the coefficient of distance is allowed to change over time. In a standard specification in which transport costs are proxied by distance only, it i...

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  • publication . Article . 2009
    Open Access
    Authors:
    A.S. Faranski; A.J. Barefoot; Malcolm D. Bolton; T. Powell; David White; J.S.S. Baldry; Andrew Palmer; M. Finch; A.J. Baumgard;
    Persistent Identifiers
    Publisher: Thomas Telford Ltd.

    A buried pipeline can buckle upwards if there is not enough resistance to movement. Both the uplift resistance (the maximum force per unit length) and the mobilisaion distance (the distance the pipeline has move before the maximum force is reached) are important in desi...

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  • publication . Article . 2014
    Open Access
    Authors:
    Davi F. Oliveira; Davi F. Oliveira; Joseilson R. Nascimento; Carla Alves Marinho; Ricardo Tadeu Lopes;
    Persistent Identifiers
    Publisher: Elsevier BV

    Abstract The goal of this study is to detect and quantify the thickness of the scale layer inside the service pipelines. For this purpose, a system composed of a 137 Cs source and a NaI(Tl) scintillation detector was developed. The source and the detector were positione...

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  • publication . Conference object . 2015
    Open Access
    Authors:
    Kaming Bi; Hong Hao;
    Persistent Identifiers
    Publisher: School of Civil Engineering, The University of Queensland

    Pipeline systems are commonly used to transport oil, natural gas, water, sewage and other materials. They are normally regarded as important lifeline structures. Ensuring the safety of these pipeline systems is crucial to the economy and environment. There are many reas...

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  • publication . Article . 2017
    Open Access
    Authors:
    Charles Rodway; Peter Gloeckner;
    Persistent Identifiers
    Publisher: Scientific Research Publishing, Inc,

    The worldwide air traffic underwent a rapid development in recent decades. Between the early 70s and the late 90s of the last century civil air traffic doubled every 15 years. The civil aviation market will continue to grow with 4% - 5% each year within the next 20 year...

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  • publication . Article . 2017
    Open Access Russian
    Authors:
    Array А. Шульжицкий; Array С. Шумилов;
    Persistent Identifiers
    Publisher: MGTU im. N.È. Baumana

    <p>The paper deals with design requirements for an aviation fuel system (AFS), AFS basic design requirements, reliability, and design precautions to avoid AFS failure. Compares the reliability and fail-safety of AFS and aircraft hydraulic system (AHS), considers the pro...

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  • publication . Conference object . 2011
    Open Access
    Authors:
    Divya C Chandra; Michael Zuschlag; Rebecca Grayhem;
    Publisher: IEEE

    Traffic Collision Avoidance System (TCAS) traffic displays use symbol fill to distinguish “proximate” from “non-proximate” targets, where proximate targets are within a specified range and altitude of ownship, and non-proximate targets are outside these parameters. Whil...

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  • publication . Article . 2011
    Open Access Ukrainian
    Authors:
    D. V. Ustimenko; A. V. Nikitenko;
    Publisher: Dnipropetrovsk National University of Railway Transport named after Academician V. Lazarya

    Основна увага в статті приділяється порівнянню енергетичних втрат у приводах насосів з різними видами керування. Наведений матеріал орієнтує у визначенні тих вузлів приводних систем, де найбільш вигідне застосування частотного керування.

  • publication . Article . 2014
    Open Access English
    Authors:
    Krzysztof Wróbel;
    Persistent Identifiers
    Publisher: Gdynia Maritime University

    Dynamically positioned vessels, used by offshore industry, use not only satellite navigation but also different positioning systems, often referred to as ‘reference’ systems. Most of them use multiple technical devices located outside the vessel which creates some probl...

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  • publication . Article . 2008
    Open Access English
    Authors:
    Costanza Caniglia Rispoli;
    Publisher: Università di Napoli Federico II

    La mobilit&amp;agrave; pedonale non &amp;egrave; che una componente della mobilit&amp;agrave;, fenomeno tramite cui una societ&amp;agrave; si &amp;ldquo;impadronisce&amp;rdquo; del proprio territorio. Da tempo mobilit&amp;agrave; &amp;egrave; sinonimo di traffico e circ...

47,835 research outcomes, page 1 of 4,784