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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 44 (1959), S. 330-330 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 14 (1992), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Fully digital photogrammetric close range systems allow for on line or even real time processing of data. This gives access to a great number of new applications, especially in those cases where a moving object has to be dynamically recorded or a moving sensor has to be positioned and oriented in three dimensional space, as is the case in robotics. This article gives a brief survey of the problems and potential of these new systems and techniques. Aspects of fast data acquisition and processing are addressed and a concise description of the DIPS II digital station is provided. The accuracy of digital systems is reviewed and two significant new algorithmic developments are referenced. Finally, three characteristic projects demonstrate the potential and performance of digital close range photogrammetry. 〈section xml:id="abs1-2"〉〈title type="main"〉Résumé Les systèmes utilisés en photogrammétrie à courte distance permettent, lorsqu'ils sont entièrement numériques, un traitement en ligne des donnés, et même en temps réel. Cela ouvre la voie à un grand nombre ďapplications nouvelles, particulièrement lorsqu'il s'agit ďun objet mobile qu'il faut enregistrer dynamiquement ou ďun capteur mobile qu'il faut localiser et orienter dans un espace à trois dimensions, comme c'est lecas en robotique. On examine brièvement dans cet article les problèmes et les possibilityés de ces nouvelles techniques et de ces nouveaux systèmes. On aborde quelques aspects concernant la saisie et le traitement rapide des donnés et ľonfournit une brève description du poste numérique DIPS II. On analyse la précision des sytémes numériques et ľon mentionne deux nouveaux développements algorithmiques importants. Enfin on illustre les possibilityés de la photogrammétrie numérique à courte distance et les résultats atteints, en s'appuyant sur trois projets typiques. 〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Vollständig digitale Systeme in der Nahbereichsphotogrammetrie gestatten die On-line-oder sogar Echtzeitdatenverarbeitung. Das ermöglicht eine groβe Anzahl neuer Anwendungen, besonders in solchen Fällen, wo ein bewegtes Objekt dynamisch registriert oder ein bewegter Sensor im dreidimensionalen Raum positioniert und orientiert werden soil, z.B. im Falle von Robotern. Im Artikel wird eine kurze Übersicht über die Probleme und die Möglichkeiten dieser neuen Systeme und Verfahren gegeben. Aspekte der schnellen Datenerfassung und -verarbeitung werden angesprochen, und es erfolgt eine knappe Beschreibung der digitalen Arbeitsstation DIPS II. Die Genauigkeit digitaler Systeme wird analysiert und zwei signifikant neue algorithmische Entwicklungen werden zitiert. Abschlieβend demonstrieren drei charackteristische Projekte die Möglichkeiten und Leistungsfähigkeit der digitalen Nahbereichsphotogrammetrie.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Chirurg 70 (1999), S. 265-269 
    ISSN: 1433-0385
    Keywords: Key words: Basal cell carcinoma ; Micrographic surgery ; Recurrence rate ; Reconstruction. ; Schlüsselwörter: Basaliom ; mikrographische Chirurgie ; Rezidivrate ; plastische Deckung.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Aus dem Patientengut der Klinik und Poliklinik für Mund-, Kiefer- und Gesichtschirurgie des Universitätsklinikums Tübingen wurden die Daten von 673 Patienten mit 1301 Basaliomen, welche im Zeitraum von 1977 bis 1992 behandelt wurden, retrospektiv katamnestisch analysiert. Klinisch-morphologische und therapeutische Kriterien, wie Tumorlokalisation und -ausdehnung, spezifische Vorbehandlungen, Histopathologie, Art und Weise der Tumorablation sowie der jeweils verwendeten plastisch-rekonstruktiven Maßnahmen wurden im einzelnen analysiert. Durch Einsatz der mikrographischen Chirurgie können die Gewebedefekte, speziell in den Problemzonen des Augen- und Nasenbereiches, kleinstmöglich gehalten werden. Damit werden günstige Voraussetzungen für die anschließende plastisch-rekonstruktive Defektdeckung und eine höchstmögliche Sicherheit für die Tumorfreiheit des angrenzenden Gewebes geschaffen. Die Daten von Patienten mit Basaliomrezidiven wurden in Korrelation mit den jeweiligen Untersuchungsergebnissen von Patienten mit primärer Tumormanifestation dargestellt. Als besonders bedeutend zeigte sich hierbei der Vergleich der jeweiligen Tumorlokalisationen sowie der histopathologischen Subdifferenzierung. Durch die Ergebnisse unserer Untersuchung konnte bestätigt werden, daß nach wie vor die chirurgische Excision des Basalioms, mit ausreichendem Sicherheitsabstand und histopathologischer Tumor- und Schnittrandkontrolle, die Therapie der Wahl ist.
    Notes: Summary. The present investigation reviews the history of 673 patients having undergone surgical treatment for 1301 BCC of the face between 1977 and 1992 at our department. Based on this series the features with bearing on the surgical strategy, such as type, size and location of the lesions, will be outlined. Emphasis is put on the variants of local flap reconstruction and skin grafting techniques, particularly in the problem zones of the nose and eyelids, where no excess skin for closure of the defect is available. Throughout the whole series histologic control of the adequacy of marginal and deep tumor resection was performed. It became obvious that the required ranges for clearance to tumor edges and removal in depth cannot be predefined arbitrarily or on pure clinical judgement. Frequently a two-stage procedure of resection and repair will be necessitated. Recurrences during the mandatory follow-up were thoroughly reassessed to identify the reason for failure (e. g. accuracy of histologic category, multifocal growth, predisposition) and related to the time span from primary excision. Our series confirms that morphologically controlled surgical excision of the BCC of the face and subsequent application of reconstructive techniques produces both safe oncologic and esthetic results.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Experiments in fluids 15 (1993), S. 133-146 
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Particle Tracking Velocimetry (PTV) is a well-known technique for the determination of velocity vectors within an observation volume. However, for a long time it has rarely been applied because of the intensive effort necessary to measure coordinates of a large number of flow marker particles in many images. With today's imaging hardware in combination with the methods of digital image processing and digital photogrammetry, however, new possibilities have arisen for the design of completely automatic PTV systems. A powerful 3D PTV has been developed in a cooperation of the Institute of Geodesy and Photogrammetry with the Institute of Hydromechanics and Water Resources Management at the Swiss Federal Institute of Technology. In this paper hardware components for 3D PTV systems wil be discussed, and a strict mathematical model of photogrammetric 3D coordinate determination, taking into account the different refractive indices in the optical path, will be presented. The system described is capable of determining coordinate sets of some 1000 particles in a flow field at a time resolution of 25 datasets per second and almost arbitrary sequence length completely automatically after an initialization by an operator. The strict mathematical modelling of the measurement geometry, together with a thorough calibration of the system provide for a coordinate accuracy of typically 0.06 mm in X, Y and 0.18 mm in Z (depth coordinate) in a volume of 200 × 160 × 50 mm3.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 35 (1999), S. 349-353 
    ISSN: 1573-1111
    Keywords: aliphatic amine ; ion-selectivity ; optical recognition ; calix[4]arene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The complexation properties of three new chromogenic calix[4]arenes ( 1a–c) with aliphatic amines and alkali/alkali earth metal ions have been studied by UV/Vis spectroscopy. 1c shows the greatest complex forming ability and it is selective for Li+, Ca2+ and certain amines in polar solvents.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 67 (1925), S. 233-235 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 75 (1928), S. 466-472 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 70 (1927), S. 361-367 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 72 (1927), S. 64-67 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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