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  • 1
    Electronic Resource
    Electronic Resource
    28 ps recovery time in an InGaAsP/InGaAsP multiple-quantum-well saturable absorber employing carrier sweepout (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 3566-3569 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We describe fast recovery at a wavelength of 1550 nm in a multiple-quantum-well (MQW) saturable absorber with InGaAsP quaternary wells and barriers using electric-field-induced carrier sweepout. The MQW SA is integrated with a distributed Bragg reflector in a p-type–intrinsic–n-type structure. Pump–probe measurements show that the recovery time can be reduced from 〉900 to 28 ps by application of a 151 kV/cm sweepout field. We measure the dependence of the recovery time on the energy of the saturating pulse and explain our results in terms of carrier dynamics in the sweepout field. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1399032
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  • 2
    Electronic Resource
    Electronic Resource
    Oxide nanostructures through self-assembly (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 1442-1444 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A prominent theme in inorganic materials research is the creation of uniformly flat thin films and heterostructures over large wafers, which can subsequently be lithographically processed into functional devices. This letter proposes an approach that will lead to thin film topographies that are directly counter to the above-mentioned philosophy. Recent years have witnessed considerable research activity in the area of self-assembly of materials, stimulated by observations of self-organized behavior in biological systems. We have fabricated uniform arrays of nonplanar surface features by a spontaneous assembly process involving the oxidation of simple metals, especially under constrained conditions on a variety of substrates, including glass and Si. In this letter we demonstrate the pervasiveness of this process through examples involving the oxidation of Pd, Cu, Fe, and In. The feature sizes can be controlled through the grain size and thickness of the starting metal thin film. Finally, we demonstrate how such submicron scale arrays can serve as templates for the design and development of self-assembled, nanoelectronic devices. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1352666
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  • 3
    Electronic Resource
    Electronic Resource
    Rayleigh–Bénard convection in liquid metal layers under the influence of a vertical magnetic field (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 13 (2001), S. 3247-3257 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of a vertical magnetic field on the integral heat transfer and the temporal dynamics of liquid metal Rayleigh–Bénard convection is studied in an experiment using a small Prandtl number (Pr(approximate)0.02) sodium potassium alloy Na22Kr78 as a test fluid. The test section is a rectangular box of large aspect ratio 20 : 10 : 1 that covers a parameter range of Rayleigh numbers, 103〈Ra〈105, and Chandrasekhar numbers, 0〈Q〈1.44×104. The integral heat transfer across the layer is evaluated from the measured temperatures at the upper and the lower boundary and the applied heat flux. Local, time-dependent temperatures are obtained from a four-element temperature probe placed in the middle of the liquid metal layer. The noncoplanar arrangement of the thermocouples enables the evaluation of the time-dependent temperature gradient vector that allows us to estimate the local isotropy properties of the time-dependent flow. From the damping effect of Joule dissipation, the convective heat transport decreases monotonically with increasing Chandrasekhar numbers. Fluctuations of the temperature field are damped significantly by the magnetic field. However, this effect is selective with respect to frequency. Long period fluctuations are strongly damped whereas short period fluctuations are less damped or may even be amplified. The observations show that significant convective heat transport is practically always associated with time-dependent flow. The fluctuating part of the local temperature gradient confirms the horizontal isotropy of the velocity field; no predominant orientation of time-dependent flow structures is established either with or without a magnetic field. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1404385
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  • 4
    Electronic Resource
    Electronic Resource
    Co-producing management knowledge (2004)
    Bingley : Emerald
    Management decision 42 (2004), S. 375-386 
    Details
    ISSN: 0025-1747
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: The division between academic knowledge and its relevance for practice is an enduring problem across many fields. Nowhere is this division more pronounced, and resolution of its negative features more required, than in academic management research and its relationship to management practice, for the advent of the knowledge revolution requires that organizations capitalize on all available assets including knowledge assets when improving performance either by increasing efficiencies or ensuring mission delivery in the medium term. How companies might achieve this has become a key question. This paper reports the "co-production" model of knowledge creation and transfer through a novel case of this in practice. It outlines how academics and managers can work together using a "systematic review" of the science base to synthesize management knowledge and ensure its transfer. In doing so it offers management academics and practitioners a new model for the production and application of knowledge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00251740410518895
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  • 5
    Electronic Resource
    Electronic Resource
    Competitor networks: international competitiveness through collaboration: The case of small freight forwarders in the High-Tech Forwarder Network (2002)
    Bingley : Emerald
    International journal of entrepreneurial behaviour & research 8 (2002), S. 239-253 
    Details
    ISSN: 1355-2554
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: The case of the global freight forwarding industry is one example where networks of small- to medium-sized enterprises (SMEs) are playing an increasingly important role. Internationalisation opportunities and competitive advantages may be obtained by SMEs in pooling their resources and exchanging information and expertise. This empirical case study examines horizontal collaboration between SMEs that consider their other network members, first and foremost, as competitors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/13552550210448348
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  • 6
    Electronic Resource
    Electronic Resource
    A framework for the strategic management of long-term assets (SMoLTA) (2004)
    Bingley : Emerald
    Management decision 42 (2004), S. 277-291 
    Details
    ISSN: 0025-1747
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Managing long-term infrastructural assets, such as real estate, buildings and equipment, is becoming more topical at the strategic level. Such assets are reported to comprise 25 per cent or more of corporate assets and occupancy costs represent 40-50 per cent of net operating incomes and are often the third most expensive item (behind labour costs and IT). Managers with little experience of the strategic management of long-term assets (SMoLTA) often find this a challenging agenda. This paper reports exploratory research on how managers are addressing the SMoLTA and is drawn from the views of senior managers in 25 organisations of varying sizes from the public and private sectors. In addition, the paper uses data from research on management practices in four case companies that have excellent reputations in this field, synthesising the findings into algorithmic form. This algorithm is developed and presented as a tentative framework which aims to help facilitate managers in aligning corporate and infrastructure strategy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00251740410518516
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