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  • 1
    Electronic Resource
    Electronic Resource
    A distributed routing algorithm for mobile wireless networks (1995)
    Springer
    Wireless networks 1 (1995), S. 61-81 
    Details
    ISSN: 1572-8196
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Computer Science
    Notes: Abstract We present a loop-free, distributed routing protocol for mobile packet radio networks. The protocol is intended for use in networks where the rate of topological change is not so fast as to make “flooding” the only possible routing method, but not so slow as to make one of the existing protocols for a nearly-static topology applicable. The routing algorithm adapts asynchronously in a distributed fashion to arbitrary changes in topology in the absence of global topological knowledge. The protocol's uniqueness stems from its ability to maintain source-initiated, loop-free multipath routing only to desired destinations with minimal overhead in a randomly varying topology. The protocol's performance, measured in terms of end-to-end packet delay and throughput, is compared with that of pure flooding and an alternative algorithm which is well-suited to the high-rate topological change environment envisioned here. For each protocol, emphasis is placed on examining how these performance measures vary as a function of the rate of topological changes, network topology, and message traffic level. The results indicate the new protocol generally outperforms the alternative protocol at all rates of change for heavy traffic conditions, whereas the opposite is true for light traffic. Both protocols significantly outperform flooding for all rates of change except at ultra-high rates where all algorithms collapse. The network topology, whether dense or sparsely connected, is not seen to be a major factor in the relative performance of the algorithms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196259
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  • 2
    Electronic Resource
    Electronic Resource
    Editorial (1999)
    Springer
    Mobile networks and applications 4 (1999), S. 137-138 
    Details
    ISSN: 1572-8153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019142730539
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  • 3
    Electronic Resource
    Electronic Resource
    A reservation-based multicast (RBM) routing protocol for mobile networks: initial route construction phase (1995)
    Springer
    Wireless networks 1 (1995), S. 427-450 
    Details
    ISSN: 1572-8196
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Computer Science
    Notes: Abstract We propose a combined multicast routing, resource reservation and admission control protocol, termed Reservation-Based Multicast (RBM), that borrows the “Rendezvous Point” or “Core” concept from multicast routing algorithms proposed for the Internet, but which is intended for operation in mobile networks and routes hierarchically-encoded data streams based on user-specified fidelity requirements, real-time delivery thresholds and prevailing network bandwidth constraints. The protocol exhibits the fully distributed operation and receiver-initiated orientation of these proposed algorithms; but, unlike them, the protocol is tightly coupled to a class of underlying, distributed, unicast routing protocols thereby facilitating operation in a dynamic topology. This paper focuses on the initial route construction phase, assumed to occur during a static “snapshot” of the dynamic topology, and is therefore applicable to fixed networks as well, e.g. the Internet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985755
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of amiloride on bulk flow and iontophoretic taste stimuli in the hamster (1987)
    Springer
    Journal of comparative physiology 160 (1987), S. 281-288 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This investigation 1) demonstrates the effect of amiloride on various taste responses in the hamster, and 2) tests the hypothesis that its action on iontophoretic application of taste stimuli parallels its action on bulk flow delivery. Amiloride has not previously been tested in the hamster nor has its effect on iontophoretic stimuli (socalled ‘electric taste’), which is thought to behave similarly to bulk flow stimuli, been examined. Amiloride treatment (4 min of 0.0001M) of the hamster's tongue effectively inhibited chorda tympani responses to NaCl and LiCl solutions. Bulk flow (0.1M) and iontophoretic (+7 μA through 0.001M) presentations of NaCl and LiCl, which had unequal response magnitudes pre-treatment, were inhibited to the same residual response magnitude post-treatment. Recovery then proceeded along two distinct curves asymptotically returning to pre-treatment response levels. These curves could be adequately described by a simple exponential relationship. KCl responses were unaffected when presented via bulk flow techniques but significantly reduced when presented iontophoretically. HCl responses via either method were only slightly diminished. No decrement in response level was observed for the sweet stimuli sucrose (0.5M) or saccharin (−9 μA through 0.001M Na-saccharin) nor for potassium picrate, a bitter stimulus, (0.01M or −10 μA through 0.001M). Amiloride treatment of the hamster tongue was as specific in its action for sodium and lithium as reported in other species, and with the exception of KCl the action of amiloride on iontophoretic stimulation paralleled its action on bulk flow stimulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609733
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  • 5
    Electronic Resource
    Electronic Resource
    The restriction of admissible representations ton (1978)
    Springer
    Mathematische Annalen 233 (1978), S. 193-198 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405350
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  • 6
    Electronic Resource
    Electronic Resource
    Automated 1H and 13C chemical shift prediction using the BioMagResBank (1997)
    Springer
    Journal of biomolecular NMR 10 (1997), S. 329-336 
    Details
    ISSN: 1573-5001
    Keywords: Chemical shift ; Homology ; Prediction ; BioMagResBank
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A computer program has been developed to accurately and automatically predict the 1H and 13C chemical shifts of unassigned proteins on the basis of sequence homology. The program (called SHIFTY) uses standard sequence alignment techniques to compare the sequence of an unassigned protein against the BioMagResBank – a public database containing sequences and NMR chemical shifts of nearly 200 assigned proteins [Seavey et al. (1991) J. Biomol. NMR, 1, 217–236]. From this initial sequence alignment, the program uses a simple set of rules to directly assign or transfer a complete set of 1H or 13C chemical shifts (from the previously assigned homologues) to the unassigned protein. This ‘homologous assignment’ protocol takes advantage of the simple fact that homologous proteins tend to share both structural similarity and chemical shift similarity. SHIFTY has been extensively tested on more than 25 medium-sized proteins. Under favorable circumstances, this program can predict the 1H or 13C chemical shifts of proteins with an accuracy far exceeding any other method published to date. With the expo- nential growth in the number of assigned proteins appearing in the literature (now at a rate of more than 150 per year), we believe that SHIFTY may have widespread utility in assigning individual members in families of related proteins, an endeavor that accounts for a growing portion of the protein NMR work being done today.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018373822088
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  • 7
    Electronic Resource
    Electronic Resource
    Design tradeoffs for a single degree of freedom structure (1993)
    Springer
    Dynamics and control 3 (1993), S. 387-400 
    Details
    ISSN: 1573-8450
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This study demonstrates that a single degree-of-freedom structure's vibrations can be effectively suppressed by using either passive damping, a combination of passive damping and active control, or active control without any passive damping. There are several limitations to a controller's effectiveness, two of which are the absorber's mass and stroke length. If settling time is used as the criterion to determine an absorber's effectiveness, then the classical den Hartog solution does not yield the optimum settling time for a passive absorber. The best settling time occurs when the passive absorber is tuned to a natural frequency close to that obtained with the den Hartog solution, but with a damping ratio that is significantly greater. Three different closed-loop control schemes, namely, local velocity feedback (LVF), linear quadratic regulator (LQR), and linear quadratic Gaussian (LQG), are overlaid on a passively tuned absorber. Slightly faster settling times are achieved than with the passive absorber only, and the passive absorber's parameters differ from those used to obtain the best settling time using the passive absorber only. Without passive damping, the three control strategies yield settling times much smaller than that obtained using passive damping only. However, with LVF control the actuator's maximum stroke length is quite large, and after a disturbance the actuator drifts to a steady-state position far from its initial position. For LQR and LQG control schemes, the best settling times result when there is no weighting on the actuator's position and velocity and the ratio between theQ andR matrices is large. The observer in LQG control causes that controller to generate larger settling times when compared to LQR control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01968541
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  • 8
    Electronic Resource
    Electronic Resource
    Maternal effect of a hybrid inviability gene in Tribolium castaneum (1998)
    Springer
    Genetica 104 (1998), S. 155-159 
    Details
    ISSN: 1573-6857
    Keywords: hybrid inviability ; reproductive isolation ; speciation ; Tribolium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Tribolium castaneum hybrid inviability gene, H, was selectively introgressed into a genetic background lacking H through serial paternal backcrosses. This revealed a poor viability phenotype (partial paralysis and poor control of the limbs, referred to as tremor) not present in the parent strains. Tremor cosegregated with H, but was expressed only when transmitted paternally and only when H was not also present maternally. The inferred maternal, self‐suppressive effect of H may explain nonreciprocal incompatibilty previously observed between H and H‐incompatible strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003431618664
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  • 9
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    Evaluation of choice set generation algorithms for route choice models (2006)
    Springer
    Details
    Publication Date: 2006-04-01
    Print ISSN: 0254-5330
    Electronic ISSN: 1572-9338
    Topics: Mathematics , Economics
    Published by Springer
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  • 10
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    The Toxicity of a Neem Insecticide to Populations of Culicidae and Other Aquatic Invertebrates as Assessed in In Situ Microcosms (2000)
    Springer
    Details
    Publication Date: 2000-09-01
    Print ISSN: 0090-4341
    Electronic ISSN: 1432-0703
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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