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  • 1
    Electronic Resource
    Electronic Resource
    NASCAR Racing Fans: Cranking Up an Empirical Approach (2002)
    Boston, USA and Oxford, UK : Blackwell Publishers Inc.
    The @journal of popular culture 36 (2002), S. 0 
    Details
    ISSN: 1540-5931
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Ethnic Sciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1540-5931.00010
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Methoden der Nierenpunktion bei der Ratte (1968)
    Springer
    Clinical and experimental medicine 145 (1968), S. 260-265 
    Details
    ISSN: 1591-9528
    Keywords: Renal puncture ; Renal needle biopsy ; Rat ; Nierenpunktion ; Ratte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 90 Ratten wurden insgesamt 266 Nierenpunktionen durchgeführt. Selbst Serienbiopsien (bis zu acht Eingriffen pro Tier bzw. bis fünf Punktionen pro Niere) mit Intervallen von wenigen Tagen wurden gut vertragen. Drei Methoden wurden versucht: percutane Blindbiopsie, Punktion unter Sicht von dorsal (extraperitoneal) bzw. von ventral (transperitoneal). Bei Berücksichtigung der wichtigsten Momente (Ergiebigkeit des Punktates, Schwierigkeit des Eingriffes — auch bei nachfolgenden Punktionen —, lokale Folgen an der Niere und Umgebung) hat sich dastransperitoneale Vorgehen als dieMethode der Wahl erwiesen und ausgezeichnete Ergebnisse geliefert. Die Nierenpunktion der Ratte kann besonders zum Studium des Verlaufes experimenteller Nierenkrankheiten mit morphologischen Methoden empfohlen werden.
    Notes: Summary In 90 rats 266 renal puncture biopsies were performed. Even serial biopsies (up to eight per animal or up to five punctures per kidney, respectively) were tolerated very well. Three methods were attempted: Percutaneous blind biopsy, puncture under direct vision by a dorsal (extraperitoneal) approach and by a ventral (transperitoneal) one. Considering the most important factors (e.g. amount of the puncture sample, difficulty of the procedure even in subsequent punctures, local damage to the kidney) the transperitoneal approach has proved to be the method of choice and excellent results were obtained. Renal puncture of rats are especially suitable for studying diseases of the kidney by morphological methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02044616
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Robust Optical Flow Computation Based on Least-Median-of-Squares Regression (1999)
    Springer
    International journal of computer vision 31 (1999), S. 51-82 
    Details
    ISSN: 1573-1405
    Keywords: least-median-of-squares robust regression ; optical flow estimation ; affine motion model ; motion discontinuity detection ; image sequence analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract An optical flow estimation technique is presented which is based on the least-median-of-squares (LMedS) robust regression algorithm enabling more accurate flow estimates to be computed in the vicinity of motion discontinuities. The flow is computed in a blockwise fashion using an affine model. Through the use of overlapping blocks coupled with a block shifting strategy, redundancy is introduced into the computation of the flow. This eliminates blocking effects common in most other techniques based on blockwise processing and also allows flow to be accurately computed in regions containing three distinct motions. A multiresolution version of the technique is also presented, again based on LMedS regression, which enables image sequences containing large motions to be effectively handled. An extensive set of quantitative comparisons with a wide range of previously published methods are carried out using synthetic, realistic (computer generated images of natural scenes with known flow) and natural images. Both angular and absolute flow errors are calculated for those sequences with known optical flow. Displaced frame difference error, used extensively in video compression, is used for those natural scenes with unknown flow. In all of the sequences tested, a comparison with those methods that result in a dense flow field (greater than 80% spatial coverage), show that the LMedS technique produces the least error irrespective of the error measure used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008046826441
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    Paper (German National Licenses)
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