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  • 1
    Electronic Resource
    Electronic Resource
    Heuristics for permutation flow shop scheduling with batch setup times (1996)
    Springer
    OR spectrum 18 (1996), S. 67-80 
    Details
    ISSN: 1436-6304
    Keywords: Flow shop scheduling ; batch setup times ; group technology ; manufactoring cells ; heuristics ; Flow Shop Probleme ; Setup Zeiten ; Gruppentechnologie ; Heuristiken
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung In dieser Arbeit werden Permutationsflußprobleme mit Batch Setup Zeiten betrachtet. Jeder Job hat die gleiche technologische Reihenfolge. Die Jobs sind in Gruppen eingeteilt. Gegeben sind Bearbeitungszeient ij für Jobi auf Maschinej sowie Setup Zeitens rj auf Maschinej, wenn ein Job derr-ten Gruppe nach einem Job einer anderen Gruppe bearbeitet wird. Es wird vorausgesetzt, daß auf allen Maschinen die gleiche Reihenfolge der Jobs gewählt wird. In der Arbeit werden sowohl das Problem der Minimierung der Gesamtbearbeitungszeit als auch das Problem der Minimierung der Summe der Bearbeitungsendtermine mit Item oder Batch Verfügbarkeit betrachtet. Für diese Probleme werden konstruktive und iterative Algorithmen entwickelt. Die konstruktiven Algorithmen basieren auf Einfügungstechniken mit Beamsuche. Es werden geeignete Nachbarschaftsstrukturen eingeführt und auf lokaler Suche und Wiedereinfügungstechniken basierende iterative Algorithmen entwickelt. Die Algorithmen wurden an Beispielen mit bis zu 80 Jobs getestet.
    Notes: Abstract In this paper we consider permutation flow shop scheduling problems with batch setup times. Each job has to be processed on each machine once and the technological routes are identical for all jobs. The set of jobs is divided into groups. There are given processing timest ij of jobi on machinej and setup timess rj on machinej when a job of ther-th group is processed after a job of another group. It is assumed that the same job order has to be chosen on each machine. We consider both the problems of minimizing the makespan and of minimizing the sum of completion times, where batch or item availability of the jobs is assumed. For these problems we give various constructive and iterative algorithms. The constructive algorithms are based on insertion techniques combined with beam search. We introduce suitable neighbourhood structures for such problems with batch setup times and describe iterative algorithms that are based on local search and reinsertion techniques. The developed algorithms have been tested on a large collection of problems with up to 80 jobs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01539731
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  • 2
    Electronic Resource
    Electronic Resource
    Besonderheiten bei der Ozonolyse substituierter Cyclopentene (1995)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 337 (1995), S. 409-412 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Details on Ozonolyses of Substituted Cyclopentenes
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19953370187
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  • 3
    Electronic Resource
    Electronic Resource
    α-Oxosulfone, 5. Reaktionen eines cyclischen α-Ketosulfons (1983)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1739-1743 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Oxosulfones, 5. - reactions of a Cyclic α-Ketosulfone5,5-Dioxo-6H-dibenzo[b,d]thiopyran-6-one (4) as the first „real α-ketosulfone“ was isolated, and some of its reactions were studied. Apparently, 4 represents formally a border case between a thioester S,S-dioxide and an „α-ketosulfone“.
    Notes: Als erstes „wirkliches α-Ketosulfon“ wurde 5,5-Dioxo-6H-dibenzo[b,d]-thiopyran-6-on (4) isoliert. Beim Studium einiger seiner Reaktionen zeigte sich, daß 4 formal einen Grenzfall zwischen einem Carbonsäurethioester-S,S-dioxid und einem „α-Ketosulfon“ darstellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198319831009
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  • 4
    Electronic Resource
    Electronic Resource
    α-Oxosulfone, 2. Synthesen von α-Oxosulfonen durch Ozonspaltungen (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1977-1991 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Oxosulfones, 2.  -  Synthesis of α-Oxosulfones by OzonolysisThe hitherto unknown α-oxosulfones 2 have been synthesized by ozonolytic cleavage of α-diazosulfones 1 (method A) or α-(methoxymethylene)sulfones 6 (method B).
    Notes: Durch Ozonspaltung von α-Diazosulfonen 1 (Methode A) oder von α-(Methoxymethylen)sulfonen 6 (Methode B) in aprotischem Medium werden bisher nicht bekannte α-Oxosulfone 2 hergestellt.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919791208
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  • 5
    Electronic Resource
    Electronic Resource
    α-Oxosulfone, 3. Reaktionen acyclischer α-Oxosulfone (1980)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 1477-1481 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Oxosulfones, 3.  -  Reactions of Acyclic α-OxosulfonesThe course of reactions of acyclic α-oxosulfones with protic and aprotic nucleophiles is described. A far-reaching analogy to reactions of acyl halides is noticed.
    Notes: Die Reaktionsweise von acyclischen α-Oxosulfonen mit protischen und aprotischen Nucleophilen wird beschrieben. Dabei wird eine weitgehende Analogie zu Reaktionen von Acylhalogeniden festgestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198019801004
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  • 6
    Electronic Resource
    Electronic Resource
    Attractive interactions between negative charges and polarizable aryl parts of host-guest systemsSupramolecular Chemistry, Part 40. Part 39: A. V. Eliseev and H.-J. Schneider, Angew. Chem., in press. (1993)
    Chichester : Wiley-Blackwell
    Journal of Physical Organic Chemistry 6 (1993), S. 590-594 
    Details
    ISSN: 0894-3230
    Keywords: Organic Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: NMR measurements of associations between simple organic host and guest molecules bearing alternatively negatively charged groups and electroneutral π-moieties show in aqueous solutions weak but distinct attractions reaching approximately 2 kJ mol-1 and X-/arene unit. A similar value is observed for the complex between a calixarene with 4-sulfonato groups and toluene, for which the NMR shifts indicate an orientation with the guest methyl substituent upwards. The conformational fit of the selected complexes is checked by molecular mechanics simulations.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/poc.610061010
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