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  • 1
    Electronic Resource
    Electronic Resource
    Selection of input variables for model identification of static nonlinear systems (1996)
    Springer
    Journal of intelligent and robotic systems 16 (1996), S. 185-207 
    Details
    ISSN: 1573-0409
    Keywords: Model identification ; static nonlinear systems ; feedforward neural networks ; structure identification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract System identification can be divided into structure and parameter identification. In most system-identification approaches the structure is presumed and only a parameter identification is performed to obtain the coefficients in the functional system. Yet, often there is little knowledge about the system structure. In such cases, the first step has to be the identification of the decisive input variables. In this paper a black-box input variable identification approach using feedforward neural networks is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00449705
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Eosinophilic alveolitis in BAL after lung transplantation (1999)
    Springer
    Transplant international 12 (1999), S. 266-272 
    Details
    ISSN: 1432-2277
    Keywords: Key words Lung Tx ; Eosinophilic alveolitis ; Alveolitis ; BAL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Lung transplantation has become a therapeutic option for patients with end stage lung disease. However, outcome after transplantation is complicated by episodes of rejection and infections. Bronchoalveolar lavage is a valuable tool in monitoring patients after transplantation, since it allows the detection of pathogens. A marker specifically indicating rejection from changes in BAL fluid has not been found yet. Especially changes in differential cell count, like lymphocytosis or an increase in polymorphnuclear granulocytes, are unspecific. The role of high eosinophil levels in BAL has not been elucidated yet. We analyzed 25 BAL samples and clinical data of 4 patients who underwent lung transplantation and presented with recurrent episodes of eosinophilic alveolitis in BAL. All patients demonstrated a deterioration of clinical condition, lung function, and blood gas analysis during times of eosinophilia in BAL, compared to previous examinations. In all cases, eosinophilia in BAL was accompanied by rejection. All patients were finally treated with high doses of steroids, resulting in improvement of all parameters. Eosinophilia was not associated with significant changes in the IL-5 concentration in BAL or the pattern of IL-5 expression in BAL cells. In conclusion, eosinophilic alveolitis may indicate acute rejection in patients after lung transplantation, if other causes of eosinophilia are excluded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001470050221
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Chylous cardiac tamponade in acute pancreatitis (1996)
    Springer
    Digestive diseases and sciences 41 (1996), S. 1972-1974 
    Details
    ISSN: 1573-2568
    Keywords: acute pancreatitis ; cardiac tamponade ; chylopericardium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 47-year-old woman with acute necrotizing pancreatitis developed sudden cardiorespiratory arrest and needed resuscitation. A pericardial effusion was found, and 350 ml of a white nontransparent milky fluid was aspirated that contained 1020 mg triglycerides/100 ml. The diagnosis of chylous cardiac tamponade was made. Absence of amylase in the chylous effusion militates against the popular hypothesis that lymphatic transport of exocrine digestive enzymes from the inflamed pancreas produces the frequent intrathoracic serosal effusions in acute pancreatitis. The data of our patient rather suggest that these effusions result from the leakage of pancreatic inflammatory exudates through the diaphragm which, apparently, may even result in the loss of pericardial and adjacent thoracic lymph vessel integrity. Although pericardial tamponade is a rare complication, it should be considered if otherwise unexplained circulatory deterioration occurs in a patient with acute pancreatitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02093598
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    Paper (German National Licenses)
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