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The article discusses the role of precedents in the German judicial practice. In the European continental tradition, law enactment is within the legislature, whereas the role of the judiciary is to enforce law. In the continental system, precedent does not constitute a source of law sensu stricto, that is, a formal source of law. In order to guarantee the law utility and, ultimately, the legal certainty, courts interpret legal provisions in a unified manner. It is noteworthy that during the recent years the coherent interpretation of legal provisions and, by the same token, the commitment to law development, have increased. That means that a unified interpretation of law performed by courts may be considered a precedent. In this context, precedents and stare decisis have been replacing the logical interpretation of law in German courts.

Abstract  The heat-removal capability of area-interconnect-compatible interlayer cooling in vertically integrated, high-performance chip stacks was characterized with de-ionized water as coolant. Correlation-based predictions and computational fluid dynamic modeling of cross-flow heat-removal structures show that the coolant temperature increase due to sensible heat absorption limits the cooling performance at hydraulic diameters ≤200 μm. An experimental investigation with uniform and double-side heat flux at Reynolds numbers ≤1,000 and heat transfer areas of 1 cm2 was carried out to identify the most efficient interlayer heat-removal structure. The following structures were tested: parallel plate, microchannel, pin fin, and their combinations with pins using in-line and staggered configurations with round and drop-like shapes at pitches ranging from 50 to 200 μm and fluid structure heights of 100–200 μm. A hydrodynamic flow regime transition responsible for a local junction temperature minimum was observed for pin fin in-line structures. The experimental data was extrapolated to predict maximal heat flux in chip stacks having a 4-cm2 heat transfer area. The performance of interlayer cooling strongly depends on this parameter, and drops from >200 W/cm2 at 1 cm2 and >50 μm interconnect pitch to 2 at 4 cm2. From experimental data, friction factor and Nusselt number correlations were derived for pin fin in-line and staggered structures. [ABSTRACT FROM AUTHOR]