In order to study the die wear law of rotary fine blanking helical cylindrical gear, a three-dimensional rigid plastic finite element model gear is established on Deform-3D software platform. Based Archard model, this paper analyzes in process, obtains distribution each point working surface die, determines maximum area, and makes comparative analysis with spur gear. Through single factor varia...

Die Partnerschaften zwischen Schule und Hochschule ermöglichten die Gestaltung und Überprüfung von Unterrichtsbeispielen zu Internetworking im Besonderen und zu Informatiksystemen im Allgemeinen. Das Konzept der Didaktischen Systeme und die Forschungsmethodik mit Intervention bewährten sich dabei. Mit ausgewählten Beispielen werden diese Unterrichtsprojekte vorgestellt und ihr Beitrag zur Theor...

The use of optimization methods in engineering is increasing. Process and product optimization, inverse problems, shape optimization, and topology optimization are frequent problems both in industry and science communities. In this paper, an optimization framework for engineering inverse problems such as the parameter identification and the shape optimization problems is presented. It inherits ...

RDF data is set apart from relational or XML data by its support of rich existential information in the form of blank nodes. Where in SQL databases null values are scoped over a single tuple, blank nodes in RDF can span over any number of statements and thus can be seen as existentially quantified variables. Blank node querying is considered in most RDF query languages, but blank node construct...

Contaminant carbon (blank carbon) was studied for its impact on the carbon isotope measurements (∆14C and δ13C) of 3 organic compound classes of oceanic particulate organic matter. Two methods of blank correction and associated uncertainties were studied. First, the carbon blanks were quantified manometrically and the isotope ratios of the blank carbon were measured directly. Second, the isotop...

The 28 Eurasian species of Xyela Dalman, 1819 are revised based on material of ca 7,500 imagines including about 10 % reared specimens. Larvae of Eurasian Xyela usually are monophagous and feed inside the staminate cones of pines (Pinus spp., Pinaceae). Based on the reared material, on identification by barcoding and on additional collection observations, the larval host associations for the Xy...

For all industrial processes, modelling, optimisation and control are the keys to enhance productivity and ensure product quality. In the current study, the optimization of process parameters for improving the conversion of isoeugenol to vanillin by Psychrobacter sp. CSW4 was investigated by means of Taguchi approach and Box-Behnken statistical design under resting cell conditions. Taguchi desi...