This paper proposes a new concurrent heap algorithm, based on a stateless shape property, which efficiently maintains balance during insert and removeMin operations implemented with hand-over-hand locking. It also provides a O(1) linearizable snapshot operation based on lazy copy-on-write semantics. Such snapshots can be used to provide consistent views of the heap during iteration, as well as ...

Implementing quotas in university admissions: An experimental analysis by Sebastian Braun, Nadja Dwenger, Dorothea Kübler* and Alexander Westkamp Quotas for special groups of students often apply in school or university admission procedures. This paper studies the performance of two mechanisms to implement such quotas in a lab experiment. The first mechanism is a simplified version of the mecha...

Aims : The Vinschgau is the driest inner-alpine valley in Eastern Alps and harbours a unique steppe vegetation. We studied these dry grassland communities aimed to answer following questions: Which plant can be found currently? Do syntaxa described by Braun-Blanquet 1960s still prevail area? Has there been any change species composition over last 40–50 years? Study area Along an approximately 4...

Methionyl-tRNA synthetase has been purified from a yeast strain carrying the MESl structural gene on a high copy number plasmid (pFL1). The purified enzyme is a monomer of M, = 85,000 in contrast to its counterpart from Escherichia coli which is a dimer made up of identical subunits (M, = 76,000; Dardel, F., Fayat, G., and Blanquet, S . (1984) J. Bucteriol. 160,1115-1122). The yeast enzyme was ...

Torsten Braun, Burkhard Stiller Martina Zitterbart Institute of Telematics IBM Research Division University of Karlsruhe Thomas J. Watson Research Center Am Zirkel 2, P.O. Box 6980 P.O. Box 704 D-W7500 Karlsruhe Yorktown Heights, NY 10598, U.S.A Phone: +49 721 608-3983 Phone: +1 914 784-6952 Fax: +49 721 60 60 97 Fax: +1 914 784-6219 E-Mail: [braun|stiller]%[email protected] E-Mail: zit@...

Often in non-life insurance, claims reserves are the largest position on the liability side of the balance sheet. Therefore, the prediction of adequate claims reserves for a portfolio consisting of several run-off subportfolios from dependent lines of business is of big importance for every non-life insurance company. In the present paper we consider the claims reserving problem in a multivaria...

Renewed interest in the writings of the “Wauwatosa Theologians” John Schaller, August Pieper, and J.P.Koehler has been noted by the publication of several recent papers and articles (Braun, 2003, Sellnow, 1998, Pless, 1999). Additionally, references to this particular paper by Koehler were noted in the previously published CHARIS article by Mark Braun, “A Tale of Two Synods.” These references, ...