Ongoing projects with the VLBA are continuing with the source samples used in these pilot studies.
This research apprenticeship project involves cataloging a collection of ancient obsidian source samples from South America.
Given that 40% of YouTube's users visit the site to watch music videos, it seems like a natural evolution for producers to use it to source samples too.
Sediment source samples were collected from five sources: croplands, forested floodplains, grasslands, upper grazed floodplains, and lower grazed floodplains.
In this paper, we study model-transferring methods as a practical branch of adaptation methods, which adapt the source classifier to new domains without using the source samples.
This project will involve pulling materials from an Andean archaeological collection, running samples in an X-Ray Fluorescence machine, gathering and appending results into a database, and reviewing the patterns noted in the geochemistry of obsidian source samples and obsidian cultural artifacts.
Therefore, by analyzing three odd, long-chain n-alkanes (C27, C29 and C31) in 27 source samples from cropland, gully, and steep slope areas and one sediment sequence (one cultivated horizon and 47 flood couplets), a composite fingerprinting method and genetic algorithm optimization were applied to find the optimal source contributions to sediments.
Measurements made at the Australian National University using laser ablation ICPMS show that none of the 88 analyzed obsidian artifacts from East Timor match either the known Papua New Guinea or the five Island SE Asian source samples in our ANU collections.
The target and the source samples that had a high confidence score were selected.
Finally, the source samples are reconstructed as (hat {x}'_{n}=hat {x}_{n}+epsilon '_{n}).
For trellis encoding and decoding, a sequence length of 256 source samples has been used.
