32 research outputs found

    Open data from the third observing run of LIGO, Virgo, KAGRA, and GEO

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    The global network of gravitational-wave observatories now includes five detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600. These detectors collected data during their third observing run, O3, composed of three phases: O3a starting in 2019 April and lasting six months, O3b starting in 2019 November and lasting five months, and O3GK starting in 2020 April and lasting two weeks. In this paper we describe these data and various other science products that can be freely accessed through the Gravitational Wave Open Science Center at https://gwosc.org. The main data set, consisting of the gravitational-wave strain time series that contains the astrophysical signals, is released together with supporting data useful for their analysis and documentation, tutorials, as well as analysis software packages

    Combustion Measurements of Synthetic Fuels at Gas Turbine Conditions

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    Synthetic fuels are of interest as a replacement for aviation, diesel, and other petroleum-based fuels, and the present paper outlines a joint project to study the combustion behavior of Fischer-Tropsch (FT) synthetic fuels. To this end, shock-tube kinetics, shock-tube spray, and high-recirculation combustion rig experiments are being utilized to study the ignition delay times, chemical kinetics, and the formation of soot and emissions of FT jet fuels. The conditions for the present ignition delay times and CH* profiles ranged from 1391 to 1680 K with an average pressure of 2 atm and equivalence ratio of 1, highly diluted in argon. Undiluted experiments were conducted using a recently developed heterogeneous technique wherein the fuel is sprayed directly into the test region of a shock tube. The high recirculation combustion rig is a complete gas turbine where syntroleum was combusted and soot formation and particulates measured. Reduction of soot and emissions was observed, agreeing with previous investigations

    Winning Formula, Man Management and the Inner Game: Commonalities of Success in the Ryder Cup and Super Bowl A Commentary

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    Using a conceptual framework based on the work of Mitch McCrimmon, who has highlighted false dichotomies of leadership and management, the Ryder Cup captaincy of Paul McGinley is examined in terms of man management, strategy and tactics, and the Inner Game. For purposes of comparison on these matters, reference is made to American Football coach Pete Carroll. This is a stimulus article aimed at making links between sport and business through invited commentaries. It is intended to provoke critical reflection on nebulous use of the term ‘leadership’ and that much ‘leadership development’ is concerned with matters such as selfawareness that are associated with ‘personal growth’. Attention is drawn to how McGinley's captaincy is couched in terms of a discourse of ‘management’
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