The present paper shows the adaption of the numerical model originally developed by Weigand and Beer [14] for calculating steady-state ice layers inside an asymmetrically cooled parallel-plate channel. The investigation shows the characteristics in ice formation behaviour due to asymmetrically cooled walls. Further, a simple analytical model is presented for calculating smooth ice layers in tur...

This paper presents a probabilistic framework for full-chip estimation of subthreshold leakage power distribution considering both within-die and die-to-die variations in process (P), temperature (T) and supply voltage (V). The results obtained under this framework are compared to BSIM results and are found to be more accurate in comparison to those obtained from existing statistical models. Us...

The integration of optimization algorithms with computational fluid dynamics (CFD) is becoming more practical as the software becomes more robust and the hardware more efficient. In order to investigate the application of CFD-based optimization methods in the chemical process industry, two polymer die design examples were explored using different slot die geometries, different CFD codes, and di...

Keyhole limpet hemocyanin forms ion-conducting channels in planar lipid bilayer membranes. Ionic current through the open hemocyanin channel presents the following characteristics: (a) it is carried mainly by cations; (b) it is a nonlinear function of membrane potential; (c) channel conductance is a saturating function of ion activity; (d) it shows ionic competition. A model for the open hemocy...

Bei der Analyse und dem Design drahtloser Kommunikationssysteme spielt die Modellierung und Simulation der Signalausbreitungswege eine immer wichtigere Rolle. Im Zusammenhang mit adaptiven Empfängerkonzepten für zukünftige Mobilfunksysteme sind dabei die räumlichen Ausbreitungseigenschaften auf dem Funkkanal von besonderem Interesse. Aus der Literatur sind verschiedene Modellierungsansätze beka...

"As a cohort of people, animals, or machines ages, the individuals at highest risk tend to die or exit first. This differential selection can produce patterns of mortality for the population as a whole that are surprisingly different from the patterns for subpopulations or individuals. Naive acceptance of observed population patterns may lead to erroneous policy recommendations if an interven...

The stainless steel bipolar plate has received much attention due to the cost of graphite bipolar plates. Since the micro-channel of bipolar plates plays the role of fuel flow field, electric connector and fuel sealing, an investigation of the deep drawing process for stainless steel micro-channel arrays is reported in this work. The updated Lagrangian formulation, degenerated shell finite elem...

Die Kanalschätzung spielt eine sehr wichtige Rolle in kohärenten Funkübertragungssystemen wie z.B. GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS). In diesem Beitrag wird ein neues Verfahren zur iterativen Kanalschätzung basierend auf den Fähigkeiten der Kanalkodierung vorgestellt. Dabei konzentriert sich die Anwendung der nichtblinden und blinden Kanalsch ätzungsVerfahren auf die Identifizierung...

Extrinsic information transfer (EXIT) charts have been used extensively for designing concatenated coding schemes with iterative decoding. The area between the two transfer curves has been shown to approximate the gap to channel capacity. A curve-fitting procedure on EXIT charts was previously suggested for designing low density parity check codes. In this paper, we develop a similar approach f...

The fate of peptides that fail to bind to major histocompatibility complex class I molecules in the endoplasmic reticulum (ER)has remained unclear. A recent study has revealed that these peptides exit the ER via the Sec61 channel and compete for this pathway with misfolded proteins.