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  • Articles  (14)
  • Springer  (14)
  • Technology  (14)
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  • Articles  (14)
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  • 1
    Electronic Resource
    Electronic Resource
    Application of Technology Transfer principles to managerial responsibilities (1985)
    Springer
    The journal of technology transfer 10 (1985), S. 25-33 
    Details
    ISSN: 1573-7047
    Source: Springer Online Journal Archives 1860-2000
    Topics: Technology
    Notes: Abstract During the summer of 1985, LCDR Robert Cox completed a course entitled “Technology Transfer” at the U.S. Naval Postgraduate School, Monterey, California. The objectives of the course were to enhance the capability of course participants to take advantage of innovations, to move appropriate research and development results into use, and to gain insight into the Technology Transfer responsibilities of managers. LCDR Cox' paper was chosen from among several contributions as an example of the application of Technology Transfer principles to a manager's job.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02172838
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Numerical experiments on convective heat transfer in water-saturated porous media at near-critical conditions (1990)
    Springer
    Transport in porous media 5 (1990), S. 299-323 
    Details
    ISSN: 1573-1634
    Keywords: Supercritical convection ; heat transfer ; numerical simulation ; porous media ; geothermal systems ; water ; critical point
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract Fluid and heat flow at temperatures approaching or exceeding that at the critical point (374 °C for pure water, higher for saline fluids) may be encountered in deep zones of geothermal systems and above cooling intrusives. In the vicinity of the critical point the density and internal energy of fluids show very strong variations for small temperature and pressure changes. This suggests that convective heat transfer from thermal buoyancy flow would be strongly enhanced at near-critical conditions. This has been confirmed in laboratory experiments. We have developed special numerical techniques for modeling porous flow at near-critical conditions, which can handle the extreme nonlinearities in water properties near the critical point. Our numerical simulations show strong enhancements of convective heat transfer at near-critical conditions; however, the heat transfer rates obtained in the simulations are considerably smaller than data reported from laboratory experiments by Dunn and Hardee. We discuss possible reasons for this discrepancy and develop suggestions for additional laboratory experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00140018
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  • 3
    Electronic Resource
    Electronic Resource
    Potential flow past a sphere touching a tangent plane (2000)
    Springer
    Journal of engineering mathematics 38 (2000), S. 355-370 
    Details
    ISSN: 1573-2703
    Keywords: breaking waves ; impulsive motion ; potential flow ; wave impact pressures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Technology
    Notes: Abstract The uniform ideal flow past an impermeable sphere in contact with an impermeable plane is calculated, and the potential Φ is expressed as an integral over solutions in tangent sphere coordinates, up to an unknown function α. An ordinary differential equation satisfied by α is solved numerically to a high degree of accuracy and then a detailed presentation of the potential near the sphere is given. The potential near to the point of contact is analysed separately using a theory appropriate to crevice regions, and the two solutions are matched. The potential Φ is interpreted as the pressure impulse, P, for which the uniform gradient is specified far from the sphere. This provides information about the impulsive velocity and the net fluid impulse on the sphere or other blunt body near a region of wave impact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004738528787
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  • 4
    Electronic Resource
    Electronic Resource
    Motion of a solid sphere in a general flow near a plane boundary at zero Reynolds number (1996)
    Springer
    Journal of engineering mathematics 30 (1996), S. 177-213 
    Details
    ISSN: 1573-2703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Technology
    Notes: Abstract It is demonstrated how the hydrodynamic force and moment of force acting on a solid sphere may be calculated when it is placed at rest at an arbitrary position in a two dimensional flow at zero Reynolds number in which the region of flow is bounded by either an undeformable planar free surface or by a plane solid wall. The results so obtained are used to calculate the motion of a freely moving solid sphere in an asymmetric vortex in the presence of an underformable free surface. It is seen that the sphere, depending on the direction of the undisturbed flow, will either spiral into or out of the vortex. This implies that when a dilute suspension of such spherical particles undergoes such a vortex motion in the presence of the free surface, the vortex will either fill up with particles from the surrounding flow or become devoid of particles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00118830
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  • 5
    Electronic Resource
    Electronic Resource
    Thermosolutal convection between poorly conducting plates (1994)
    Springer
    Journal of engineering mathematics 28 (1994), S. 463-482 
    Details
    ISSN: 1573-2703
    Keywords: convection ; long-wave asymptotics ; hydrodynamic stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Technology
    Notes: Abstract Thermosolutal convection is considered in a fluid layer between poorly conducting horizontal boudaries. The horizontal scale of the motions is much greater than the depth of the fluid layer, provided the motion is not too vigorous, and this disparity between horizontal and vertical scales provides the basis foe an asymptotic expansion of the solution. Under the assumption of near-constant solute-flux at the horizontal boundaries, a pair of evolution equations is derived for the depth-averaged temperature and solute concentration fields. These long-wave equations are investigated for two-dimensional convection by numerical integrations, and the results are compared with linear and weakly non-linear theory. The asymptotic expansion is shown to break down for large values of R, when the form assumed for the convection becomes inappropriate. The onset of three-dimensional convection is analysed. Steady square convection cells are stable. Oscillatory convection in the form of two-dimensional travelling-wave rolls is stable to three-dimensional disturbances near onset.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00058915
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  • 6
    Electronic Resource
    Electronic Resource
    Student learning profiles in two innovative honours degree engineering programmes (1994)
    Springer
    International journal of technology and design education 4 (1994), S. 257-287 
    Details
    ISSN: 1573-1804
    Keywords: intellectual development ; program assessment Perry's model ; MBTI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Art History , Education , Technology
    Notes: Abstract This paper reports a study of innovative and traditional engineering programmes at the University of Salford, UK Attention is given to student entry, and to course evaluation and improvement. Using the Myers-Brigg Type Inventory (MBTI) and the Technical Students' Learning Environment Preferences questionnaire (TSLEP), data were obtained about personality type and student developmental level. In addition, a selected group of the students were interviewed to measure their cognitive levels as defined by Perry's model of intellectual and ethical development, and to assist in the validation of the TSLEP questionnaire. Application of the TSLEP and the MBTI instruments to engineering students at North Carolina State University and the State University of New York at Brighamton generated further data which are used to make US/UK comparisons and to suggest ways in which the scope of engineering education might be expanded to meet the needs of an increasingly diverse student body.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01212806
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  • 7
    Electronic Resource
    Electronic Resource
    Equivalent cardiac generators: Two moving dipoles and moving dipole and quadripole (1974)
    Springer
    Annals of biomedical engineering 2 (1974), S. 164-182 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Two advanced models of equivalent cardiac generators were formulated and tested. The first model consists of two moving dipoles in a bounded spherical volume conductor. The second model consists of a simultaneous moving dipole and quadripole in an identical bounded spherical medium. The development of these models evolves from the derivation of the potential function for a dipole, a quadripole and an octapole in a homogeneous medium with a spherical dielectric boundary using a Taylor series expansion of a potential function due to two point current sources. The nonlinear models were tested in an inverse sense using ideal data and an existing nonlinear estimation scheme. Preliminary results indicate that such models may potentially be useful for characterization of the cardiac generator.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02368488
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  • 8
    Electronic Resource
    Electronic Resource
    Hexadecapolar shift equations applicable to equivalent cardiac generators of lower degree (1973)
    Springer
    Annals of biomedical engineering 1 (1973), S. 481-488 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Electrocardiographic shift equations for manifest hexadecapolar behavior due to eccentric location of equivalent generators of lesser degree have been derived and numerically validated. Under these conditions hexadecapolar properties emerge as first-order positional moments of eccentric octapole coefficients, second-order moments of quadripole coefficients, and third-order moments of dipole coefficients. Assuming that hexadecapolar field information can be successfully evaluated for beating heart preparations, including the intact human, the formulations presented herein should prove useful in determining the location of an equivalent cardiac generator of lesser degree.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02367271
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  • 9
    Electronic Resource
    Electronic Resource
    A comparative study of nonlinear equivalent cardiac generators (1975)
    Springer
    Annals of biomedical engineering 3 (1975), S. 47-61 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract In a previous paper, the theoretical development of several advanced nonlinear models of equivalent cardiac generators was presented. The present communication compares the salient quantitative and qualitative aspects of these models in an idealized mathematical environment. Using physiologically realistic simulated data, we have tested a single moving dipole, two moving dipoles, a moving dipole and quadripole, and a truncated spherical multipole expansion both for their ability to reproduce surface potential distributions and to be resolved in an inverse sense. Results are presented which indicate that, in general, a minimum of 32 observation points are necessary to resolve these models for the given spherically bounded system. In addition, a single moving dipole is not capable of reproducing the multimaxima-multiminima potential distributions characteristic of the simulated data. Although the other models are capable of mimicking spherical surface potential distributions, considerable computational effort is required to realize these inverse solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000004
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  • 10
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    On the strong scalability of maritime CFD (2017)
    Springer
    Details
    Publication Date: 2017-05-27
    Print ISSN: 0948-4280
    Electronic ISSN: 1437-8213
    Topics: Geosciences , Technology
    Published by Springer
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