@misc{18310, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 0899.00009}}, title = {{{Ihmig, Karl-Norbert, „Hilberts axiomatische Methode und der Fortschritt in den Naturwissenschaften. Zu Cassirers Wissenschaftsphilosophie“, in: Rudolph, Enno/Stamatescu, Ion O. (eds.), Von der Philosophie zur Wissenschaft: Cassirers Dialog mit der Naturwissenschaft, Meiner: Hamburg 1997, 63–91}}}, year = {{1998}}, } @misc{18306, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 0897.01002}}, title = {{{Gabriel, Gottfried/Kienzler, Wolfgang (eds.), Frege in Jena. Beiträge zur Spurensicherung. Tagungsbericht, Jena, Deutschland, 6.–7. Dezember 1996, Königshausen & Neumann: Würzburg 1997}}}, year = {{1998}}, } @misc{18242, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 0880.01005}}, title = {{{Hovens, Frans, “Lotze and Frege: The Dating of the ‘Kernsätze’”, History and Philosophy of Logic 18 (1997), 17–31}}}, year = {{1998}}, } @misc{19048, abstract = {{Page 57}}, author = {{Peckhaus, Volker}}, title = {{{Fotografie: Überreichung der Ehrendoktorwürde der Philosophischen Fakultät der Universität Konstanz an Carl Gustav Hempel 1991, in: Jochen Grüning/Dirk Ferus/Reinhard Siegmund-Schultze, Terror and Exile. Persecution and Expulsion of Mathematicians from Berlin between 1933 and 1945. An Exhibition on the Occasion of the International Congress of Mathematicians. Technische Universität Berlin. August 19 to 27, 1998, Deutsche Mathematiker-Vereinigung: o.O.u.J. [1998], 57}}}, year = {{1998}}, } @article{43342, abstract = {{The four-wave mixing (FWM) signal of a semiconductor superlattice with an external electric field is evaluated using the semiconductor Bloch equations. It is found that the FWM signal for a GaAs/AlGaAs-semiconductor superlattices with a lattice constant d has a deep valley when the electric field is around eF d = 1 meV. It is also found that the deep valley comes mainly from the broken inversion symmetry caused by the exteral electric field and that the field intensity determines the sign and the magnitude of the Coulomb-induced optical nonlinearities.}}, author = {{Meier, Torsten and Je, K.-C and Kim, Y. and Koch, S.W.}}, journal = {{Journal of the Korean Physical Society}}, number = {{4}}, pages = {{437--440}}, title = {{{Field-Induced Four-Wave Mixing Signal in Semiconductor Superlattices}}}, volume = {{32}}, year = {{1998}}, } @inproceedings{2175, author = {{Bock, Stefan and Meyer auf der Heide, Friedhelm and Scheideler, Christian}}, booktitle = {{IPPS}}, pages = {{326----332}}, publisher = {{IEEE Computer Society}}, title = {{{Optimal Wormhole Routing in the (n, d)-Torus}}}, year = {{1997}}, } @inproceedings{2179, author = {{Flammini, Michele and Scheideler, Christian}}, booktitle = {{SPAA}}, pages = {{170----179}}, title = {{{Simple, Efficient Routing Schemes for All-Optical Networks}}}, year = {{1997}}, } @inproceedings{11750, abstract = {{Addresses the problem of online, writer-independent, unconstrained handwriting recognition. Based on hidden Markov models (HMM), which are successfully employed in speech recognition tasks, we focus on representations which address scalability, recognition performance and compactness. 'Delayed' features are introduced which integrate more global, handwriting specific knowledge into the HMM representation. These features lead to larger error-rate reduction than 'delta' features which are known from speech recognition and even require fewer additional components. Scalability is addressed with a size-independent representation. Compactness is achieved with linear discriminant analysis. The representations are discussed and the results for a mixed-style word recognition task with vocabularies of 200 (up to 99% correct words) and 20000 words (up to 88.8% correct words) are given.}}, author = {{Dolfing, J.G.A. and Haeb-Umbach, Reinhold}}, booktitle = {{ICASSP, Munich}}, title = {{{Signal Representations for Hidden Markov Model Based On-Line Handwriting Recognition}}}, year = {{1997}}, } @inproceedings{11781, abstract = {{The increased popularity of mobile telephony introduces both challenges and opportunitites for automatic speech recognition. ASR offers ways to simplify the use of mobile phones, notably in hands- and eyes-busy situations. However, the acoustic environment can be severely degraded and the wireless network may add additional distortions to the speech signal. This paper gives an overview of the sources of degradation and attempts to robust speech recognition for mobile communications. Emphasis is placed on approaches which are suitable for implementation in mobile terminals. Two example applications are described which illustrate the robustness issues and design considerations typical of low-cost noisy speech recognition: voice-dialling in a GSM phone and hands-free digit recognition in the car.}}, author = {{Haeb-Umbach, Reinhold}}, booktitle = {{Eurospeech}}, title = {{{Robust Speech Recognition for Wireless Networks and Mobile Telephony}}}, year = {{1997}}, } @inproceedings{11819, abstract = {{The SpeechDat project aims to produce speech databases for all official languages of the European Union and some major dialectal variants and minority languages resulting in 28 speech databases. They will be recorded over fixed and mobile telephone networks. This will provide a realistic basis for training and assessment of both isolated and continuous-speech utterances, employing whole-word or subword approaches, and thus can be used for developing voice driven teleservices including speaker verification. The specification of the databases has been developed jointly, and is essentially the same for each language to facilitate dissemination and use. There will be a controlled variation among the speakers concerning sex, age, dialect, environment of call, etc. The validation of all databases will be carried out centrally. The SpeechDat databases will be transferred to ELRA for distribution. The next databases to be recorded will cover East European languages.}}, author = {{Hoege, H. and Tropf, H. S. and Winsky, R. and van den Heuvel, H. and Haeb-Umbach, Reinhold and Choukri, K.}}, booktitle = {{ICASSP, Munich}}, title = {{{European Speech Databases for Telephone Applications}}}, year = {{1997}}, } @inproceedings{11852, abstract = {{This paper describes speaker-independent speech recognition experiments concerning acoustic front end processing on a speech database that was recorded in 3 different cars. We investigate different feature analysis approaches (mel-filter bank, mel-cepstrum, perceptually linear predictive coding) and present results with noise compensation techniques based on spectral subtraction. Although the methods employed lead to considerable error rate reduction the error analysis shows that low signal-to-noise ratios are still a problem}}, author = {{Langmann, Detlev and Fischer, Alexander and Wuppermann, Friedhelm and Haeb-Umbach, Reinhold and Eisele, Thomas}}, booktitle = {{Eurospeech}}, title = {{{Acoustic Front Ends for Speaker-Independent Digit Recognition in Car Environments}}}, year = {{1997}}, } @article{18628, abstract = {{We present a nontrivial model system of interacting electrons that can be solved analytically in the GW approximation. We obtain the particle number from the GW Green’s function strictly analytically, and prove that there is a genuine violation of particle number conservation if the self-energy is calculated non-self-consistently from a zeroth order Green’s function, as done in virtually all practical implementations. We also show that a simple shift of the self-energy that partially restores self-consistency reduces the numerical deviation significantly.}}, author = {{Schindlmayr, Arno}}, issn = {{1095-3795}}, journal = {{Physical Review B}}, number = {{7}}, pages = {{3528--3531}}, publisher = {{American Physical Society}}, title = {{{Violation of particle number conservation in the GW approximation}}}, doi = {{10.1103/PhysRevB.56.3528}}, volume = {{56}}, year = {{1997}}, } @misc{34768, author = {{Süßmann, Johannes}}, booktitle = {{Archiv für Sozialgeschichte}}, pages = {{691 f.}}, title = {{{[Rez. v.] Luigi Marino. Praeceptores Germaniae. Göttingen 1770–1820. Aus dem Italienischen v. Brigitte Szabó-Bechstein. Göttingen. Vandenhoeck & Ruprecht 1995}}}, volume = {{37}}, year = {{1997}}, } @misc{34767, author = {{Süßmann, Johannes}}, booktitle = {{Archiv für Sozialgeschichte}}, pages = {{688 f.}}, title = {{{[Rez. v.] Ingeborg Cleve: Kunst und Konsum. Kulturpolitik als Wirtschaftspolitik in Frankreich und Württemberg (1805–1845). Göttingen. Vandenhoeck & Ruprecht 1996}}}, volume = {{37}}, year = {{1997}}, } @article{15571, author = {{Hagengruber, Ruth Edith}}, journal = {{Bruniana & Campanelliana 3, no. 1}}, pages = {{77--92}}, title = {{{La fondazione del punto matematico nella filosofia di Tommaso Campanella}}}, year = {{1997}}, } @book{50414, abstract = {{Dieses Buch verknüpft Technikgeneseforschung und Netzwerkanalyse, um auf diese Weise ein soziologisches Modell von Innovationsprozessen zu entwickeln, das auf unterschiedlichste Fallbeispiele anwendbar ist. In kritischer Auseinandersetzung mit bisherigen Konzeptualisierungen von Technikentwicklung wird Technikgenese hier als ein mehrstufiger Prozeß der sozialen Konstruktion von Technik aufgefaßt, der von wechselnden Akteurkonstellationen getragen wird und mehrere Phasen durchläuft. Für den Erfolg einer neuen Technik ist es entscheidend - so lautet eine der Schlüsselthesen -, ob es den Technikkonstrukteuren gelingt soziale Netzwerke zu konstituieren und derart zu stabilisieren, daß sie eine solide Basis für ein Technikprojekt bilden. Dieses Modell wird an empirischen Beispielen sowohl staatlich getragener Technikentwicklung (Airbus, Transrapid) als auch privatwirtschaftlich erzeugter Technik (Personal Computer, Astra-Satellit) überprüft. Da sich diese Fälle trotz ihrer Heterogenität nach einem einheitlichen Prinzip beschreiben lassen, ist es möglich, Ansatzpunkte für eine soziale Gestaltung von Innovationsprozessen zu identifizieren.}}, author = {{Riedl, Lars and Weyer, Johannes and Kirchner, Ulrich and Schmidt, Johannes F. K.}}, keywords = {{Technikgenese, Akteur-Netzwerke, Phasenmodell, Transrapid, Airbus, Innovationsprozesse, Technologiepolitik}}, pages = {{382}}, publisher = {{Edition Sima}}, title = {{{Technik, die Gesellschaft schafft. Soziale Netzwerke als Ort der Technikgenese}}}, year = {{1997}}, } @misc{18205, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl 871.00007}}, title = {{{Scheibe, Erhard, “The Role of Mathematics in Physical Sciences”, in: J. Echeverria et al. (eds.), The Space of Mathematics, Walter de Gruyter: Berlin 1992 [Zbl 0839.00019], 141–155}}}, year = {{1997}}, } @misc{18209, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH, Zbl 874.00011}}, title = {{{Ibarra, Andoni/Mormann, Thomas, “Structural Analogies between Mathematical and Empirical Theories”, in: J. Echeverria et al. (eds.), The Space of Mathematics, Walter de Gruyter: Berlin 1992 [Zbl 0839.00019], 31–46}}}, year = {{1997}}, } @misc{18200, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 0856.01020}}, title = {{{Hon, Giora, “Completeness has to be Restricted”, in: Petr Hájek (ed.), Gödel '96. Logical Foundations of Mathematics, Computer Science and Physics — Kurt Gödel’s Legacy. Proceedings of a Conference, Brno, Czech Republic, August 1996, Springer-Verlag: Berlin 1996 (= Lect. Notes Log.; 6), 214–223}}}, year = {{1997}}, } @misc{18197, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 0852.00009}}, title = {{{Sneed, Joseph D., “Structuralism and Scientific Discovery”, in: J. Echeverria et al. (eds.), The Space of Mathematics, Walter de Gruyter: Berlin 1992 [Zbl 0839.00019], 379–402}}}, year = {{1997}}, }