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  • 2020-2022  (1)
  • 1970-1974  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Hierarchien primitiv-rekursiver Funktionen im Transfiniten (1970)
    Springer
    Archive for mathematical logic 13 (1970), S. 114-133 
    Details
    ISSN: 1432-0665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01973617
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Zeitreihenprognose bei inhomogener Nachfragestruktur — dargestellt an der Vorhersage von Auftragseingangsmengen in einem Edelstahl-Unternehmen (1974)
    Springer
    Mathematical methods of operations research 18 (1974), S. B199 
    Details
    ISSN: 1432-5217
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Summary A model has been developed for the forecast of the incoming orders of different grades of special steel. This model operates simultaneously with several forecasting methods and chooses by itself the best forecast. A method developed for special structures of orders is described and discussed in detail. The main principle of the method consists of the separation of the total amount of incoming into groups according to the different sizes of orders; the entire forecast combines the classified forecasts for the number of orders and for the intervals between the incoming orders. This method was described in a more generalized way, to show that it is also appliable to other than the forecast of incoming orders of special steel.
    Notes: Zusammenfassung Es wird ein Modell für die Vorhersage des Auftragseingangs in Edelstahlmarken entwickelt. Dieses Modell arbeitet simultan mit mehreren Prognoseverfahren und wählt selbständig die beste Prognose aus. Ein für spezielle Auftragsstrukturen entwickeltes Verfahren wird im einzelnen beschrieben und diskutiert. Die Grundidee des Verfahrens besteht in der Zerlegung der gesamten Auftragseingangsmenge in Klassen verschiedener Auftragsgrößen; die Gesamtprognose setzt sich aus den klassenweisen Prognosen für die Anzahl von Aufträgen und die Zeitintervalle zwischen den Auftragseingängen zusammen. Das Verfahren wurde in verallgemeinerter Form beschrieben, um zu zeigen, daß sich die Anwendbarkeit des Verfahrens nicht nur auf die Vorhersage von Edelstahl-Auftragseingangsmengen beschränken muß.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01958688
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Über Pterinchemie. 33., vorläufige Mitteilung. Luftoxydation von 6,6-disubstituierten Tetrahydropterinen, ein Beitrag zur Frage der Existenz von Parachinoid-dihydropterinen (1970)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 53 (1970), S. 1434-1436 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Luftoxydation von 6,6-disubstituierten Tetrahydropterinen führt nicht, wie vermutet, zu Parachinoid-dihydropterinen, sondern unter Verlust einer der beiden Seitenketten zu 7, 8-Dihydropterinen. Dieses Ergebnis wird im Zusammenhang mit der existierenden Theorie der Tetrahydropterin-Oxydation kurz diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19700530626
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Über Pterinchemie. 35. Mitteilung [1]. Herstellung von 6-aminomethyl-6-methyl-5,6,7,8-tetrahydropterin, ein Beitrag zur frage der Existenz von parachinoid-dihydropterinen (1971)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 54 (1971), S. 811-818 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die erste Synthese eines 6, 6-disubstituierten Tetrahydropterins, nämlich des 6-Aminomethyl-6-methyl-5, 6, 7, 8-tetrahydropterins, wird beschrieben: Das durch Anlagerung von Blausäure an 6-Methyl-7, 8-dihydropterin entstandene 6-Cyano-6-methyl-5, 6, 7, 8-tetrahydropterin wird acetyliert, reduziert und anschliessend desacetyliert. Entgegen unserer Erwartung bildet das 6-Aminomethyl-6-methyl-tetrahydropterin bei der Oxydation durch Luftsauerstoff unter physiologischen Bedingungen kein Parachinoid-dihydropterin, sondern wird direkt zu 6-Methyl-7, 8-dihydropterin, Formaldehyd und Ammoniak abgebaut.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19710540305
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    Paper (German National Licenses)
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  • 5
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    Closing the Water Cycle from Observations across Scales: Where Do We Stand? (2021)
    In:  Bulletin of the American Meteorological Society
    Details
    Publication Date: 2021-12-15
    Description: Life on Earth vitally depends on the availability of water. Human pressure on freshwater resources is increasing, as is human exposure to weather-related extremes (droughts, storms, floods) caused by climate change. Understanding these changes is pivotal for developing mitigation and adaptation strategies. The Global Climate Observing System (GCOS) defines a suite of essential climate variables (ECVs), many related to the water cycle, required to systematically monitor Earth’s climate system. Since long-term observations of these ECVs are derived from different observation techniques, platforms, instruments, and retrieval algorithms, they often lack the accuracy, completeness, and resolution, to consistently characterize water cycle variability at multiple spatial and temporal scales. Here, we review the capability of ground-based and remotely sensed observations of water cycle ECVs to consistently observe the hydrological cycle. We evaluate the relevant land, atmosphere, and ocean water storages and the fluxes between them, including anthropogenic water use. Particularly, we assess how well they close on multiple temporal and spatial scales. On this basis, we discuss gaps in observation systems and formulate guidelines for future water cycle observation strategies. We conclude that, while long-term water cycle monitoring has greatly advanced in the past, many observational gaps still need to be overcome to close the water budget and enable a comprehensive and consistent assessment across scales. Trends in water cycle components can only be observed with great uncertainty, mainly due to insufficient length and homogeneity. An advanced closure of the water cycle requires improved model–data synthesis capabilities, particularly at regional to local scales.
    Language: English
    Type: info:eu-repo/semantics/article
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