5,754 research outputs found

    Constraints on the Neutrino Parameters from the `Rise-up' in the Boron Neutrino Spectrum at Low Energies

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    The rise-up in boron neutrino spectrum at low energies has been studied within the framework of `pure LMA' scenario. Indirect bounds on the spectral `upturn' have been obtained from the available solar neutrino data. These bounds have been used to demonstrate the efficacy of the precision measurements of the `upturn' for further constraining the neutrino parameter space allowed by SNO salt phase data. The sterile neutrino flux has been constrained in the light of the recent 766.3 Ty KamLAND spectral data.Comment: Latex 10pages including 3 postscript figure

    Some Characteristic Service Failures of Rails.

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    India has about 34,022 miles of rail track and Lilian Railways carry on an average about 1260 million passengers a year. The railway traffic is increasing rapidly every scar and the Government have a programme of railroad expansion. Most of the rails required by the Indian Railways are manufactured in India by the Tata Iron and Steel Company Limited, Jamshedpur, and the Steel Corpor-ation of Bengal, Burnpur. In the year 1951-52, these concerns supplied 27,198 and 8,552 tons of rails, respect-ively. The rails manufactured in India are of two variet-ies usually termed Carbon Steel Rails and Medium Manganese Rails.* All the indigenous rails are inspected and passed by the Government Metallurigcal Inspectorate at Tatanagar, in accordance with I.R.S. Specification T. 12-50 which is equivalent to B.S.S. No 11-36. A very close scrutiny is nviintained during them inspection keeping in mind the safety of' the travelling public. Even then both indi- genous and foreign rails have occasionally failed in service and railway authorities invariably send the failed materials to the Government Metallurgical Inspectorate, Tatanagar, for metallurgical examination

    Some Observations on Failures in Aircraft Engines & Fuselage Parts

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    Due to rapid development of world air transport, India has become the connecting link between the West and the Far East. There is a net-work of aerodromes in this country and during 1951 eight Indian Companies were operating scheduled services, internal and international, covering an unduplicated route mileage of 26,205. Though there are a few workshops to repair engines of civil aircrafts there was no firm to build aircraft in this country fr a long time. Pioneering work was carried out by the Hindusthan Aircraft Ltd., Bangalore, which is well equipped for quantitative production of aircrafts

    Roll - Claddim - A IC11-10D of Improving Properties of Materials

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    Clad materials are laminar compsites of similar or dissimilar metals or alloys bonded together surface to surface. Methods employed are direct sandwich hot or cold rolling, hot pressing, hot dipping, explosion bonding and casting etc(1). Lack of combination of several different properties in a single material necessitates the use of cladding[2]

    Size distribution of sputtered particles from Au nanoislands due to MeV self-ion bombardment

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    Nanoisland gold films, deposited by vacuum evaporation of gold onto Si(100) substrates, were irradiated with 1.5 MeV Au2+^{2+} ions up to a fluence of 5×10145\times 10^{14} ions cm−2^{-2} and at incidence angles up to 60∘60^{\circ} with respect to the surface normal. The sputtered particles were collected on carbon coated grids (catcher grid) during ion irradiation and were analyzed with transmission electron microscopy and Rutherford backscattering spectrometry. The average sputtered particle size and the areal coverage are determined from transmission electron microscopy measurements, whereas the amount of gold on the substrate is found by Rutherford backscattering spectrometry. The size distributions of larger particles (number of atoms/particle, nn ≥\ge 1,000) show an inverse power-law with an exponent of ∼\sim -1 in broad agreement with a molecular dynamics simulation of ion impact on cluster targets.Comment: 13 pages, 8 figures, Submitted for publication in JA

    The potential link between corporate innovations and corporate competitiveness:Evidence from IT firms in the UK

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    Purpose: The purpose of this paper is to provide a thorough empirical investigation of the potential link between corporate innovations and corporate competitiveness in the context of the UK IT industry. Design/methodology/approach: This research uses a panel of 216 UK IT firms for the period from 2000 to 2016. The sample data for this study were extracted from the Worldscope, extracted from the Datastream database from Thomson Reuters. For the analysis of the data, the generalised method of moments model is applied. Findings: The results of this study provide empirical evidence that there exists a strong, positive link between corporate innovations and corporate competitiveness. Such evidence further reinforces the common view in the current literature of strategic management that because of the nature of their business, firms in the IT industry need to enhance their innovative capacities on a continual basis because of their critical role on these firms’ success and survival. Also, it is found that when the proxies for corporate innovations are lagged by two periods, their impact on corporate competitiveness becomes relatively more significant. However, when they are further lagged, i.e. by three periods, such an impact turns out to be relatively less pronounced. Research limitations/implications: The data gathered for this paper was restricted to IT-oriented firms in the UK. Using a secondary database (Datastream), the paper considered the period of 2000-2016. Originality/value: The research makes a significant contribution to the current debate on the relationship between information technology, innovation and performance, referred to in the literature as the productivity paradox, by studying the problem in the IT industry. It supports organisations from the sector in their efforts to deal with the dynamic nature of technological innovations and of the context where they operate. Methodologically, the way the study has measured the concepts of innovation and performance and the lessons learned from their analysis has also brought value to the research
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