823 research outputs found
Power Shift, Strategic Changes and Board Roles in SMEs: A Portfolio Approach
This paper aims to better understand board task performance according to firms' and their boards' need to change and adapt with the firms' changing strategic circumstances. Results from case studies of six Tunisian SMEs revealed a range of board functions grouped according to four typical board governance roles of control, strategy, service and mediation. The types of board involvement in firm decision making ranged from a passive board classified as a "legal fiction" to a fully active "pilot" board type depending on the relationship between the board and the CEO/founder and the firm's circumstances. SME governance under was found to encompass simultaneously all four board roles (which we term a "portfolio" of board roles) but emphasis was placed by boards on one or two key roles according to the changing strategic demands of the firm. This finding gives initial support to the board role portfolio concept as justification for boards in SMEs. It also has practical implications for how boards can best add strategic value to their firms when transitioning through challenges of transformational change in their development over time
Proton irradiation of EMCCDs
This paper describes the irradiation of 95 electron multiplication charge coupled devices (EMCCDs) at the Paul Scherrer Institut (PSI) in Switzerland, to investigate the effects of proton irradiation on the operational characteristics of CCDs featuring electron multiplication technology for space use. This work was carried out in support of the CCD development for the radial velocity spectrometer (RVS) instrument of the European Space Agency's cornerstone Gaia mission. Previous proton irradiations of EMCCDs, have shown the technology to be radiation hard to /spl sim/10/spl times/ the required six-year Gaia lifetime proton fluence, with no device failures or unexpected operational changes. The purpose of the study described in this paper was to further investigate the statistical probability of device failure as a result of radiation damage, the large number of devices and high proton fluence used, making the study equivalent to testing /spl sim/50 complete RVS CCD focal planes to the expected end of life proton dose. An outline of the earlier EMCCD proton irradiations is given, followed by a detailed description of the proton irradiation and characterization of the 95 devices used in this latest study
A methodology for estimating dog noise in an animal housing facility
A rectangular reverberation chamber was designed, constructed and calibrated for the experimental measurement of the sound power level (acoustic power) of a dog. Calibration of the chamber consisted of comparing the acoustic power measured for a random noise source in the chamber with that for the identical source in a free field environment. Data from dogs indicate that barking noise can be modeled as a square wave pattern with short duration and peak sound power levels in the 500 Hz octave band. A-weighted sound pressure levels of up to 114.7 dBA were absorbed, indicating a potential concern for both animals and man chronically exposed to such environments
EMCCDs for space applications
This paper describes a qualification programme for Electron-Multiplication Charge Coupled Devices (EMCCDs) for use in space applications. While the presented results are generally applicable, the programme was carried out in the context of CCD development for the Radial Velocity Spectrometer (RVS) instrument on the European Space Agency's cornerstone Gaia mission. We discuss the issues of device radiation tolerance, charge transfer efficiency at low signal levels and life time effects on the electron-multiplication gain. The development of EMCCD technology to allow operation at longer wavelengths using high resistivity silicon, and the cryogenic characterisation of EMCCDs are also described
LES DETERMINANTS «TRADITIONNELS» DE LA PERFORMANCE DES CONSEILS D'ADMINISTRATION ONT-IL ENCORE DU SENS DANS LES PME ?: UNE ETUDE EXPLORATOIRE DANS LE CONTEXTE FRANÇAIS
Soutenue par la théorie d'agence, la performance des conseils d'administration a largement été associée aux déterminants traditionnels (taille du conseil, indépendance des administrateurs et séparation des fonctions). Les théories cognitives apportent des arguments pouvant réfuter cette association. L'objectif de ce papier est de mettre en exergue l'existence d'autres types de variables impliquant la performance des CA avec un pouvoir explicatif plus important. En effet, sur un échantillon de 123 PME françaises, nous montrons que la performance du CA n'est pas tant reliée aux déterminants dits traditionnels mais plutôt à des composants relevant de variables de compétences des administrateurs ainsi que des modes de fonctionnement du CA.conseil d'administration, performance, déterminants, PME françaises
Raman Spectroscopic Analysis of Geological and Biogeological Specimens of Relevance to the ExoMars Mission
H.G.M.E., I.H., and R.I. acknowledge the support of the STFC Research Council in the UK ExoMars programme. J.J. and P.V. acknowledge the support of the Grant Agency of the Czech Republic (210/10/0467) and of the Ministry of Education of the Czech Republic (MSM0021620855).Peer reviewedPublisher PD
Detection of reduced carbon in a basalt analogue for martian nakhlite : a signpost to habitat on Mars
C. W. Taylor and J. Still are thanked for skilled technical support. J. Parnell, H.G.M. Edwards, I. Hutchinson and R. Ingley acknowledge the support of the UKSA and the STFC Research Council in the UK ExoMars programme. L. V. Harris and S. McMahon acknowledge STFC studentship funding.Peer reviewedPublisher PD
GDPR: Governance implications for regimes outside the EU
It is estimated that as of 2017 around 120 nations around the globe had legislation to protect personal data with at least another 30 in train. Many of the early regimes (dating back to the 1980s and 90s) reflect the OECD Guidelines on the Protection of Privacy and Transborder Flows of Personal Data (1980, updated 2013). However, there are also increasing concerns that these guidelines may no longer be fit for purpose with recent issues regarding breaches of data security and privacy. The EU's General Data Protection Regulation (GDPR) (2016) implements a reformed data privacy regime. Tellingly, some of the new and pending privacy regulations elsewhere reflect the GDPR, a characteristic that suggests much about the impact of international trade. Two questions arise: first, how is the GDPR likely to affect and influence governance of organisations, not only those domiciled in the EU, but also those trading with the Union or having a presence there? Second, compared to the GDPR, what gaps are there in other existing privacy regimes and what are the implications for the governance of those organisations and their risk management strategies? This paper compares the GDPR with privacy regimes in place in New Zealand and Australia (the first of which has GDPR “approved country status” for receipt of data) and attempts to answer the questions above, thus providing a focus for empirical research. As such, the paper provides insight into the impact of the data privacy and security legislative reform, on corporate governance, strategy and risk management beyond the EU in its reach to far distant regions. © The Authors, 2018. All Rights Reserved.Proceedings of the 14th European Conference on Management, Leadership and Governance, ECMLG 201
Problems in radiation dose calculations in spacecraft. Part 1 - Electrons
Calculation of radiation dose produced by high energy electrons on earth orbiting manned spacecraf
Detector Description and Performance for the First Coincidence Observations between LIGO and GEO
For 17 days in August and September 2002, the LIGO and GEO interferometer
gravitational wave detectors were operated in coincidence to produce their
first data for scientific analysis. Although the detectors were still far from
their design sensitivity levels, the data can be used to place better upper
limits on the flux of gravitational waves incident on the earth than previous
direct measurements. This paper describes the instruments and the data in some
detail, as a companion to analysis papers based on the first data.Comment: 41 pages, 9 figures 17 Sept 03: author list amended, minor editorial
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