Excavation of mock graves in sediments of aeolian and fluvial origin were conducted to test the bleaching efficiency of grave digging in materials that commonly host ancient burials in Australia. Grave-size pits were dug into Pleistocene aeolian sediments at Willandra Lakes and younger fluvial sediments on the Lachlan River, backfilled, and re-excavated. Samples for optical dating were taken fr...

The transition zone of the Eastern Alps to the Pannonian Basin provides one of the best sources of information on landscape evolution of the Eastern Alpine mountain range. The region was non-glaciated during the entire Pleistocene. Thus, direct influence of glacial carving as a landscape forming process can be excluded and relics of landforms are preserved that date back to at least the Late Ne...

Luminescence dating methods on natural minerals such as quartz and feldspars are indispensable for establishing chronologies in Quaternary Science. Commonly applied sediment optically stimulated luminescence (OSL) infrared (IRSL). In 1999, Trautmann et al. (1999a, b) proposed a new related technique called radiofluorescence (IR-RF). IR-RF denotes the signal of feldspar resulting from exposure t...

Abstract In this work we performed experimental analyses of the dose-response curves natural alexandrite, using thermoluminescence (TL) and optically stimulated luminescence (OSL). The alexandrite crystals from Bahia, Brazil, were pulverized optical absorption measurements carried out in range 200 to 800 nm, comparing a non-irradiated sample with 10 Gy beta irradiated one. OSL TL Risø equipment...

A suite of samples from an extensive aeolian sandscarp near Victoria Falls, Zambia was used to explore several different methods calculating optically stimulated luminescence (OSL) ages that account for the effects saturated quartz grains. Beta dose rate heterogeneity and early OSL signal saturation exacerbate impact grains have on equivalent (De) values calculated. Saturated cannot calculate D...

Most modem linear programming solvers analyze the LP problem before submitting it to optimization. Some examples are the solvers WHIZARD (Tomlin and Welch, 1983), OBI (Lustig et al., 1994), OSL (Forrest and Tomlin, 1992), Sciconic (1990) and CPLEX (Bixby, 1994). The purpose of the presolve phase is to reduce the problem size and to discover whether the problem is unbounded or infeasible. In thi...

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