Chris J. Backhouse

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The research described in this paper investigates the problems and issues faced by companies implementing Product Data Management (PDM) systems. The aim is to produce guidelines to help managers implement PDM to gain maximum competitive advantage. A pilot study, which illustrates the key factors necessary for the successful implementation of a PDM system,(More)
We report the results of a search for e appearance in a beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8:2 Â 10 20 protons on the NuMI target at Fermilab, we find that 2sin 2 ð 23 Þsin 2 ð2 13 Þ < 0:12ð0:20Þ at 90% confidence level for ¼ 0 and the normal (inverted) neutrino mass hierarchy, with a(More)
Results are reported from a search for active to sterile neutrino oscillations in the MINOS long-baseline experiment, based on the observation of neutral-current neutrino interactions, from an exposure to the NuMI neutrino beam of 7:07 Â 10 20 protons on target. A total of 802 neutral-current event candidates is observed in the Far Detector, compared to an(More)
We report measurements of oscillation parameters from ν(μ) and ν(μ) disappearance using beam and atmospheric data from MINOS. The data comprise exposures of 10.71×10(20) protons on target in the ν(μ)-dominated beam, 3.36×10(20) protons on target in the ν(μ)-enhanced beam, and 37.88 kton yr of atmospheric neutrinos. Assuming identical ν and ν oscillation(More)
This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for ν(μ) production, accumulating an exposure of 1.71 × 10²⁰ protons on target. In the Far Detector, 97 charged current ν(μ) events are observed. The no-oscillation hypothesis predicts 156 events and is(More)
This paper reports measurements of atmospheric neutrino and antineutrino interactions in the MINOS Far Detector, based on 2553 live-days (37.9 kton-years) of data. A total of 2072 candidate events are observed. These are separated into 905 contained-vertex muons and 466 neutrino-induced rock-muons, both produced by charged-current and " interactions, and(More)
We searched for a sidereal modulation in the MINOS far detector neutrino rate. Such a signal would be a consequence of Lorentz and CPT violation as described by the standard-model extension framework. It also would be the first detection of a perturbative effect to conventional neutrino mass oscillations. We found no evidence for this sidereal signature,(More)
We report results from the first search for ν_{μ}→ν_{e} transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^{20} protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis(More)
We report constraints on antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure the 7% muon antineutrino component of the NuMI neutrino beam. In the Far Detector, we select 130 events in the charged-current muon antineutrino sample, compared to a prediction of 136:4 AE 11:7ðstatÞ þ10:2 À8:9 ðsystÞ events under the(More)