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  • Springer  (94)
  • Springer Nature  (50)
  • Oxford University Press  (20)
  • 1
    Electronic Resource
    Electronic Resource
    Transmission policies and traffic management in multimedia wireless networks (1997)
    Springer
    Wireless networks 3 (1997), S. 103-112 
    Details
    ISSN: 1572-8196
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Computer Science
    Notes: Abstract We consider multimedia wireless networks in environments where traffic characterizations and traffic rates are generally time‐varying. For such networks we propose a CDMA transmission policy, in conjunction with a moving boundaries concept induced by a traffic monitoring high‐level protocol. The proposed transmission/traffic management technique is analyzed and numerically evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019184629070
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamic capacity allocation and hybrid multiplexing techniques for ATM wireless LANs (1998)
    Springer
    Mobile networks and applications 3 (1998), S. 307-316 
    Details
    ISSN: 1572-8153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract We consider digital wireless multimedia LANs and time‐varying traffic rates. To deal effectively with the dynamics of the time‐varying traffic rates, a Traffic Monitoring Algorithm (TMA) is deployed to dynamically allocate channel capacities to the heterogeneous traffics. The TMA is implemented as a higher level protocol that dictates the capacity boundaries within two distinct framed transmission techniques: a Framed Time Domain‐Based (FTDB) technique and a Framed CDMA (FCDMA) technique. The performance of the TMA in the presence of the FTDB technique is compared to its performance in the presence of the FCDMA technique for some traffic scenarios. The performance metrics used for the TMA‐FTDB and TMA‐FCDMA combinations are channel capacity utilization factors, traffic rejection rates, and traffic delays. It is found that the TMA‐FTDB is superior to the TMA‐FCDMA when the speed of the transmission links is relatively low and the lengths of the transmitted messages are relatively short. As the speed of the transmission links and the length of the transmitted messages increase, the TMA‐FCDMA eventually outperforms the TMA‐FTDB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019141202797
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  • 3
    Electronic Resource
    Electronic Resource
    Traffic monitoring for capacity allocation of multimedia traffic in ATM broadband networks (1998)
    Springer
    Telecommunication systems 9 (1998), S. 173-206 
    Details
    ISSN: 1572-9451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract We address the accommodation of multimedia traffic by ATM broadband networks. We isolate a single network channel and we search for capacity allocation/transmission multiplexing policies which satisfy all traffic QOSs with simultaneous high utilization of channel capacity resources, in the presence of variable traffic rates. Towards that direction, we superimpose a high-level traffic-monitoring protocol which determines capacity allocations for each traffic category, dynamically. The latter protocol has sequential and implementation-efficient characteristics, and induces moving boundaries within prespecified and fixed channel frames. The channel frames are selected to satisfy the jittering constraints of all the traffics, such as voice, video and high versus low speed data. The high level protocol, in conjunction with the channel frame structure and the specifics of the transmission policy, may satisfy all traffic QOSs and may simultaneously attain high channel utilization, for certain variability conditions of the traffic rates and at relatively low implementation cost. Performance analysis as well as numerical evaluations are provided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019143822748
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of gamma radiation on the development of the Caribbean fruit fly (Anastrepha suspensa) and the subsequent development of its parasite Diachasmimorpha longicaudata (1990)
    Springer
    Entomologia experimentalis et applicata 55 (1990), S. 295-297 
    Details
    ISSN: 1570-7458
    Keywords: Biocontrol ; sterilization ; mass release
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190669
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  • 5
    Electronic Resource
    Electronic Resource
    Development of an optimal heterotrophic growth medium for Chlorella vulgaris (1984)
    Springer
    Applied microbiology and biotechnology 20 (1984), S. 281-283 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Final biomass yields of Chlorella vulgaris cultured heterotrophically in bristol medium amended with 0.1% (w/v) yeast extract (Difco) or 0.5% glucose (w/v) were 26 and 58 times higher, respectively, than yields obtained for autotrophically grown cells in the light. Similarly, final biomass increases were 35 and 138 fold for these organic substrates in the dark. The mixture of 0.1% yeast extract and 0.5% glucose was optimal and produced increases in final biomass of 70 and 140 times in the light and dark, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00250641
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  • 6
    Electronic Resource
    Electronic Resource
    Interactions between the solvent acetone and the pyrethroid insecticide permethrin on activities of the blue-green algaAnabaena (1980)
    Springer
    Bulletin of environmental contamination and toxicology 24 (1980), S. 562-569 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01608156
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  • 7
    Electronic Resource
    Electronic Resource
    Mercury levels in freshwater fish of the state of South Carolina (1977)
    Springer
    Bulletin of environmental contamination and toxicology 17 (1977), S. 82-89 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Samples of fish from freshwater sources of rivers, lakes and ponds all over the state of South Carolina were collected during the Summer of 1974 and 1975. The fish collected were Bass,A Bluegill, Redbreast, Catfish, Shad, Carp, Crappie, Mudfish and Pike. Samples were analyzed using the flameless atomic absorption procedure outlined by Hatch and Ott, and Uthe et al as modified for use with Perkin-Elmer, Coleman MAS-50 mercury analyzer. Triplicate samples of fish tissue were analyzed by wet digestion method. The mean mercury levels in ppb were determined for baseline mercury levels. A significant finding of this report is that those species for which fish of widely differing weights were analyzed, larger fish had higher mercury levels. Mercury levels exceeding the U.S. Food and Drug Administration guideline of 500 ppb for fish tissues have been found in the Mudfish from Edisto River and Pike fish from Lake Murray. Higher levels of mercury occurred in the highly vascularized blood tissues of liver and kidney than in muscle. Carnivorous and bottom-feeding fishes are the most reliable indicators of mercury pollution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685266
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  • 8
    Electronic Resource
    Electronic Resource
    Interactions of the solvent acetone with the fungicides benomyl and captan in fungal assays (1980)
    Springer
    Bulletin of environmental contamination and toxicology 25 (1980), S. 554-561 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985571
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  • 9
    Electronic Resource
    Electronic Resource
    Age- but not caste-related regulation of abdominal mechanisms underlying the sting reflex of the honey bee, Apis mellifera (1994)
    Springer
    Journal of comparative physiology 174 (1994), S. 581-592 
    Details
    ISSN: 1432-1351
    Keywords: Honey bee ; Sting response ; Motor control ; Ventral nerve cord ; Maturation ; Caste
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Stinging behavior has been extensively studied in honey bees at the level of the individual, that is, in terms of stimuli that release stinging in adult bees, and in terms of integration of individual behavior into colony defense. Yet very little is known about the physiological basis for this behavior. Using an isolated abdominal preparation factors that influence peripheral control of the sting extension response are analyzed. Results show that: 1. Electromyogram activity released by severing the ventral nerve cord changed during the first few days of adult life but not later. Abdomens from older bees (nurses, guards, foragers) showed significantly higher EMG activity than newly emerged or 24 h-old bees. 2. The reflex “matured” over 5–7 days after emergence as an adult. 3. Younger bees (≤24h) had a lower threshold for initiating sting extension than older bees. However, the threshold for initiating the full sting response, i.e., extension and venom pumping, did not differ due to age. 4. Caste status was not correlated to any of the parameters of sting extension, indicating that any effect of caste on stinging behavior must arise in more anterior ganglia and/or in the brain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217379
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  • 10
    Electronic Resource
    Electronic Resource
    The impact of neural networks in finance (1997)
    Springer
    Neural computing & applications 6 (1997), S. 193-200 
    Details
    ISSN: 1433-3058
    Keywords: Economic modelling ; Finance ; Neural networks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The financial industry is becoming more and more dependent on advanced computer technologies in order to maintain competitiveness in a global economy. Neural networks represent an exciting technology with a wide scope for potential applications, ranging from routine credit assessment operations to driving of large scale portfolio management strategies. Some of these applications have already resulted in dramatic increases in productivity. This paper brings together, from diverse sources, a collection of current research issues on neural networks in the financial domain. It examines a range of neural network systems related to financial applications from different levels of maturity to fielded products. It discusses the success rate of the neural network systems, and their performance in resolving particular financial problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01501506
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