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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    BIT 20 (1980), S. 393-405 
    ISSN: 1572-9125
    Keywords: Experiment ; software quality ; readability ; modifiability ; programming style
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract This paper describes an experimentally based methodology for investigating how the readability and modifiability of computer programs can be expressed in terms of programming style. As one part of the methodology three different measures of the readability and modifiability of a program are established. The measures are obtained by human gradings or scores. As another part these measures are related to computer-evaluable programming style characteristics. The result is a formula yielding the readability and modifiability as a function of measurable program characteristics. In testing the methodology one experiment provided a formula of readability containing six computer-evaluable programming style characteristics. A further experiment indicated that the general validity of this formula of program readability needs further investigation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 2066-2072 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphorpentoxid in der Organischen Synthese, VII. - Synthese von 3-Aryl-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-iminenDurch Umsetzung von 2-(Acetylamino)-3-pyrrolcarbonitrilen 1 mit einer Mischung von Phosphorpentoxid, N,N-Dimethylcyclohexanamin und einem geeigneten Arylamin-hydrochlorid bei 150-180 °C werden die Titelverbindungen 2 erhalten. Das verwendete Arylamin-hydrochlorid muß absolut wasserfrei sein, da anderenfalls 4-(Arylamino)pyrrolo[2,3-d]pyrimidine 4 als Nebenprodukte entstehen können. - Die Ergebnisse der Prüfung auf Pestizid- und Antikrebs-Wirksamkeit werden mitgeteilt.
    Notes: The title compounds 2 were prepared by treating 2-(acetylamino)-3-pyrrolecarbonitriles 1 with a mixture of phosphorus pentoxide, N,N-dimethylcyclohexanamine, and an appropriate arylamine hydrochloride at 150-180°C. The importance of using absolutely anhydrous arylamine hydrochlorides is stressed because failing this, 4-(arylamino)pyrrolo[2,3-d]pyrimidines 4 can be formed as by-products. - The results from pesticide and anticancer screenings are reported.
    Type of Medium: Electronic Resource
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