Schnittplanoptimierung durch Computer

Ohne Zusammenfassung     

Das Spektrum des Gelenkvierecks bei veränderlicher Gestell-Länge

Zusammenfassung Das Gelenkviereck kann man am einfachsten durch Lagen?nderungen eines Gestellpunkts, d. h. durch ?ndern der Gestell-L?nge unter Beibehaltung der L?ngen aller übrigen Glieder verstellen. Dadurch entstehen bei voller Ausnutzung der Gestell-L?ngen?nderung verschiedene Formen des Gelenkvierecks, die sich durch die Art der Relativbewegungen benachbarter Glieder als umlaufende oder nur schwingende Bewegungen unterscheiden. In r?umlichen Schaubildern lassen sich s?mtliche Bereiche des Gelenkvierecks umfassend darstellen. Mitteilung aus dem Institut für landtechnische Grundlagenforschung der Forschungsanstalt für Landwirtschaft, Braunschweig-V?lkenrode. Die Untersuchungen bilden einen Teil eines von der Deutschen Forschungsgemeinschaft gef?rderten Programms zum Erstellen verschiedener Gruppen von Kurventafeln für ungleichf?rmig übersetzende Getriebe.     

Uncertainty in biomass supply estimates: Lessons from a Yakama Nation case study

The increasing demand for bioenergy in the United States necessitates detailed case studies of cost and supply to assess its feasibility. We have developed supply curves based on six feedstocks in five counties surrounding the Yakama Nation in central Washington using spatially explicit estimates of supply and transportation cost. The supply curves were used to examine a base case supply for a bioenergy plant, to analyze the effects of land ownership, and examine the impacts of uncertainty in parameters used to determine cost and supply. The results show that existing industries produce the cheapest supply of feedstock as a byproduct of their operations, while supplies harvested specifically for bioenergy are considerably more expensive. Fragmented land ownerships lead to the necessity of cooperation between owners and highlight the importance of a strong anchor supply close to the plant. Lastly, uncertainty in supply and cost parameters leads to larger ranges in available biomass, leading to reluctant investment in large plants.     

Serotyping of Streptococcus pneumoniae by coagglutination with 12 pooled antisera

We report on the performance of a recently introduced commercial chessboard method using 12 antisera, in comparison with that of the 55-antiserum panel used in determining the serogroups and types (SGTs) of Streptococcus pneumoniae, both of which were carried out by a coagglutination technique. Of a total of 150 strains of S. pneumoniae studied, 135 (90%) belonged to the SGTs represented in the 23-valent pneumococcal vaccine; of these, 130 (96.3%) were identified as the same SGTs by both typing methods. The remaining five strains showed cross-reactivity with more than two pools by the chessboard method, but could be assigned to a single SGT by the Quellung test. The 96.3% concordance of the chessboard method suggests it can be adopted for determination of the SGTs of S. pneumoniae in laboratories.     

Attacks and Defenses for JTAG

Editor's note:JTAG is a well-known standard mechanism for in-field test. Although it provides high controllability and observability, it also poses great security challenges. This article analyzes various attacks and proposes protection schemes.—Mohammad Tehranipoor, University of Connecticut