Evaluation of aerothermal modeling computer programs

Various computer programs based upon the SIMPLE or SIMPLER algorithm were studied and compared for numerical accuracy, efficiency, and grid dependency. Four two-dimensional and one three-dimensional code originally developed by a number of research groups were considered. In general, the accuracy and computational efficieny of these TEACH type programs were improved by modifying the differencing schemes and their solvers. A brief description of each program is given. Error reduction, spline flux and second upwind differencing programs are covered

Approximating a Federal Patent District Court after \u3ci\u3eTC Heartland\u3c/i\u3e

This article presents a patent litigation framework for other federal district courts to follow, using the example of the U.S. District Court for the Eastern District of Texas after TC Heartland. This article also provides an overview of the TC Heartland U.S. Supreme Court case and the In Re Cray Federal Circuit opinion, as well as how those two cases have impacted patent litigation in various district courts across the country, most notably in the District of Delaware. All district courts should learn various lessons from the District Court for the Eastern District of Texas and should model their practices after its approach to handling patent cases going forward

A Bridge Between Copyright and Patent Law: Towards a Modern-Day Reapplication of the Semiconductor Chip Protection Act

This Paper analyzes the history of the Semiconductor Chip Protection Act (SCPA), 17 U.S.C. §§ 901–914, and asks why the statute is so seldom used in intellectual property litigation. Afterwards, this Paper makes the argument that the SCPA should be used more in intellectual property litigation, perhaps in tandem with patent litigation, and can be a viable form of protection for semiconductor micro-fabrication companies or integrated circuit design companies engaged in pioneering innovations within the cutting-edge field of semiconductor technology

Investigation of nonlinear absorption processes with femtosecond light pulses in lithium niobate crystals

The propagation of high-power femtosecond light pulses in lithium niobate crystals (LiNbO3) is investigated experimentally and theoretically in collinear pump-probe transmission experiments. It is found within a wide intensity range that a strong decrease of the pump transmission coefficient at wavelength 388 nm fully complies with the model of two-photon absorption; the corresponding nonlinear absorption coefficient is betap~=3.5 cm/GW. Furthermore, strong pump pulses induce a considerable absorption for the probe at 776 nm. The dependence of the probe transmission coefficient on the time delay Deltat between probe and pump pulses is characterized by a narrow dip (at Deltat~=0) and a long (on the picosecond time scale) lasting plateau. The dip is due to direct two-photon transitions involving pump and probe photons; the corresponding nonlinear absorption coefficient is betar~=0.9 cm/GW. The plateau absorption is caused by the presence of pump-excited charge carriers; the effective absorption cross section at 776 nm is sigmar~=8×10^–18 cm^2. The above nonlinear absorption parameters are not strongly polarization sensitive. No specific manifestations of the relaxation of hot carriers are found for a pulse duration of ~=0.24 ps