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  • Springer  (121)
  • Springer Nature  (10)
  • 1990-1994  (131)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Soft photon production in 450 GeV/cp-Be collisions (1993)
    Springer
    The European physical journal 59 (1993), S. 547-553 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have measured the inclusivep T spectra of soft photons produced at central and backward rapidities in 450 GeV/cp-Be collisions down to 1 MeV/c in transverse momentum. In the region 1〈p T 〈20 MeV/c an excess of photons over those expected from hadronic decays is observed. This excess is comparable, within systematic errors, with estimates of direct photons produced via hadronic bremsstrahlung. An upper limit is derived on the presence of additional sources of direct photons at small transverse momentum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01562546
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  • 2
    Electronic Resource
    Electronic Resource
    Polymer electrolyte lithium batteries rechargeability and positive electrode degradation: An AC impedance study (1991)
    Springer
    Journal of applied electrochemistry 21 (1991), S. 301-307 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract AC impedance measurements of polymer electrolyte-based, symmetrical composite cathode cells were used to probe the effects of the composite cathode composition and fabrication process upon its performance when used in polymer electrolyte-based thin film rechargeable lithium batteries. The relationship between cycling performance and AC impedance measurements were used to elucidate some of the reported failure mechanisms of rechargeable lithium polymer electrolyte batteries. The rapid initial capacity decay observed within the first few cycles of the polymer electrolyte/V6O13 based composite cathode is shown to be related to the properties of the composite cathode active material, while the slower capacity decay observed during subsequent cycles, under continuous cycling regimes, appears to be related to a loss of ionic and electronic contact in the composite cathode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020212
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  • 3
    Electronic Resource
    Electronic Resource
    Optical character scanning: A discussion of efficiency and politics (1993)
    Springer
    Computers and the humanities 27 (1993), S. 121-127 
    Details
    ISSN: 1572-8412
    Keywords: optical character recognition ; scanning ; off-shore keyboarding ; efficiency ; ARTFL ; cost analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Notes: Abstract Optical Character Recognition is shown to be significantly more expensive than keyboarding, using off-shore contractors, for entry of large amounts of text where high accuracy is required. Using large test samples in French and English, the paper indicates that OCR applications which require significant post-scan editing are labor intensive projects that can be accomplished more efficiently by keyboarding. Most OCR systems are still not capable of entering large amounts of text accurately enough to avoid an expensive editing step.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01830305
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  • 4
    Electronic Resource
    Electronic Resource
    Technical reviews (1992)
    Springer
    Computers and the humanities 26 (1992), S. 157-168 
    Details
    ISSN: 1572-8412
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00116352
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  • 5
    Electronic Resource
    Electronic Resource
    Book reviews (1990)
    Springer
    Computers and the humanities 24 (1990), S. 495-500 
    Details
    ISSN: 1572-8412
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00186493
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  • 6
    Electronic Resource
    Electronic Resource
    Critical theory and textual computing: Comments and suggestions (1993)
    Springer
    Computers and the humanities 27 (1993), S. 395-400 
    Details
    ISSN: 1572-8412
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Notes: Conclusion Donald Bruce and I do speak the same theoretical metalanguage, though I suspect that he is considerably more fluent than I in that tongue. Given the variety of responses, including Bruce's favorable reaction, to my attempts to provoke theoretical debate concerning the nature of electronic text as a new object of research, I am considerably more optimistic than his “knowing smile and tears of rage.” It is my contention that researchers in textual computing have significant advantages in reconceptualizing text precisely because computing technology shatters the evident surface structures of text. If electronic text is a radically different object of research, then theoretical models of the kind discussed in this volume should have a significant impact on disciplines which are currently debating the nature and limits of textuality. I would like to suggest that we, as specialists in textual computing, should make every effort to combine abstract theoretical considerations with clear efforts towards empirical verification. Maintaining that difficult balance between theory, method, and empirical verification is, in my opinion, one of the central contributions that theory of textual computing can make to critical theory in general. The computing environment provides an ideal testing ground for literary theories by encouraging experimentation and verification using real data, an element that is all too often overlooked by many critical theorists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01829390
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  • 7
    Electronic Resource
    Electronic Resource
    Signs, symbols and discourses: A new direction for computer-aided literature studies (1993)
    Springer
    Computers and the humanities 27 (1993), S. 309-314 
    Details
    ISSN: 1572-8412
    Keywords: computer-aided literature studies ; literature ; literary theory ; structuralism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Media Resources and Communication Sciences, Journalism
    Notes: Abstract Computer-aided literature studies have failed to have a significant impact on the field as a whole. This failure is traced to a concentration on how a text achieves its literary effect by the examination of subtle semantic or grammatical structures in single texts or the works of individual authors. Computer systems have proven to be very poorly suited to such refined analysis of complex language. Adopting such traditional objects of study has tended to discourage researchers from using the tool to ask questions to which it is better adapted, the examination of large amounts of simple linguistic features. Theoreticians such as Barthes, Foucault and Halliday show the importance of determining the linguistic and semantic characteristics of the language used by the author and her/his audience. Current technology, and databases like the TLG or ARTFL, facilitate such wide-spectrum analyses. Computer-aided methods are thus capable of opening up new areas of study, which can potentially transform the way in which literature is studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01829380
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  • 8
    Electronic Resource
    Electronic Resource
    Growth and glucoamylase production by the thermophilic fungusThermomyces lanuginosus in a synthetic medium (1991)
    Springer
    Applied microbiology and biotechnology 34 (1991), S. 656-660 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary The production of glucogenic amylase from the thermophilic fungus Thermomyces lanuginosus was studied in shake flasks and laboratory fermentors. As conidia were not able to germinate in media without yeast extract, pregerminated conidia were applied as inoculum. By this procedure it was possible to use different NH inf4 sup+ salts as the sole source of nitrogen for growth and amylase formation in a synthetic medium. In pH-controlled fermentors a fourfold increase in the extracellular glucogenic amylase activity was obtained with (NH4)H2PO4 as the nitrogen source as compared with yeast extract. However, by fractionation of these activities, comparable yields of partially purified glucoamylases were obtained. The glucoamylase preparation from fermentations with either of the nitrogen sources had a temperature optimum at 70° C and showed similar thermal stability. By incubation without substrate at 60° C. 90% of the activity was still present after 5 h. At 70° C, 50% of the activity was retained after 30 min incubation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167918
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  • 9
    Electronic Resource
    Electronic Resource
    Changes in brain serotonergic activity during hierarchic behavior in Arctic charr (Salvelinus alpinus L.) are socially induced (1992)
    Springer
    Journal of comparative physiology 170 (1992), S. 93-99 
    Details
    ISSN: 1432-1351
    Keywords: Arctic charr ; Dominance hierarchy ; Aggression ; Serotonin ; Growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The experiment was performed in two phases. During the first phase (phase 1) the dominance hierarchy was determined in 4 groups of Arctic charr (Salvelinus alpinus L.), each group consisting of 4 fish. Phase 2 was started by rearranging phase 1 fish into 4 new groups. Group 1 consisted of previously dominant fish and groups 2, 3 and 4 of fish that previously held rank 2, 3 and 4, respectively. After phase 2 telencephalon and brain stem were analyzed with regard to their contents of serotonin (5-hydroxytryptamine, 5-HT) and 5-hydroxyindoleacetic acid (5-HIAA), the principle metabolite of 5-HT. No correlation was found between the social rank (measured as dominance index) during phase 1 and the brain serotonergic activity (measured as the ratio 5-HIAA/5-HT) determined after phase 2. However, most important, the 5-HIAA/5-HT ratio was significantly correlated with the last experienced social rank, i.e. that acquired during phase 2. These results shows that the difference in brain serotonergic activity between dominant and subordinate fish develops through social interactions. Further, we found that previous subordinate experience inhibited aggressive behavior, an effect which, in the light of available information on stress and 5-HT, could be related to the increase in brain serotonergic activity. We hypothesize that stress induces an increased serotonergic activity which in turn inhibits the neuronal circuitry which mediates aggressive behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190404
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  • 10
    Electronic Resource
    Electronic Resource
    Rieffel projections in certain transformation group C*-algebras (1991)
    Springer
    K-Theory 5 (1991), S. 471-483 
    Details
    ISSN: 1573-0514
    Keywords: Transformation groupC *-algebra ; crossed product ; Rieffel projection ; K 0-group ; homotopy ; Murray-von Neumann equivalence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract LetA be the transformation groupC *-algebra associated with an arbitrary orientation-preserving homeomorphism of ℝ. ThisC *-algebra contains an infinite family of projections, called Rieffel projections, each of which generates theK 0-groupK 0(A)≅ℤ. Although these projections must beK-theoretically equivalent, it is easy to see that most are not Murray-von Neumann equivalent. The mystery of how large the matrix algebra must be to implement theK-theory equivalence, is solved by explicitly constructing the equivalence in the smallest possible algebra:A with unit adjoined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046940
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