NEGOTIATING HOUSEHOLD QUALITY OF LIFE AND SOCIAL COHESION AT UCANHA, YUCATAN, MEXICO, DURING THE LATE PRECLASSIC TO EARLY CLASSIC TRANSITION

The main focus of this project is to chronicle whether or not social inequality increased among households and community-level interactions in Ucanha, Yucatan, Mexico, at the time it was physically integrated with a larger regional polity headed by Ucí around the Terminal Preclassic/Early Classic (50 BCE – CE 400) transition. My research seeks to identify how social distinctions emerged during the early moments of social inequality and how these distinctions did or did not become a threat to social cohesion, as seen in the Early Classic “collapse” in some areas. Using a relational theoretical perspective, I argue that political authority and economic practices are embedded in moral expectations of a household quality of life that is negotiated by all actors. Trenching and broad-scale horizontal excavations document five variables of social distinction—architectural energetics, feasting, diversity of household assemblage, caching/burial practices, and the use of space—at three dwellings. Gini scores that calculate the distribution of fancy ceramics and labor investments in architecture also contribute to measuring household wellbeing at Ucanha. Results highlight differential, yet relatively high, quality of life during the Late Preclassic and then greater inequality and an overall decreased quality of life by the middle of the Early Classic (CE 400/450 – 600). Excavations from contexts associated with monumental architecture indicate vast labor inputs into Ucanha’s built landscape around the time of broader regional integration. Excavations and multi-elemental chemical analyses from the Central Plaza suggest this large public space was built during the Late Preclassic and was used for a variety of rituals that incorporated the populace through processions and performances. By the first few centuries into the Early Classic, however, the Central Plaza was walled off and access became limited and more tightly controlled. Thus, it appears emergent leaders at Ucanha, as evidenced by the presence of iconography related to centralized decision-making and possibly kingship, were successful in providing a high quality of life for their citizenry in exchange for labor and devoted followers during regional integration. Yet, during the Early Classic, household quality of life diminished, access to fancy ceramics became highly curtailed, and many residential platforms were abandoned likely as a result of leaders failing to meet the expectations of their followers

Metabolomics-Based Analysis of Miniature Flask Contents Identifies Tobacco Mixture Use among the Ancient Maya

A particular type of miniature ceramic vessel locally known as “veneneras” is occasionally found during archaeological excavations in the Maya Area. To date, only one study of a collection of such containers successfully identified organic residues through coupled chromatography–mass spectrometry methods. That study identified traces of nicotine likely associated with tobacco. Here we present a more complete picture by analyzing a suite of possible complementary ingredients in tobacco mixtures across a collection of 14 miniature vessels. The collection includes four different vessel forms and allows for the comparison of specimens which had previously formed part of museum exhibitions with recently excavated, untreated containers. Archaeological samples were compared with fresh as well as cured reference materials from two different species of tobacco (Nicotiana tabacum and N. rustica). In addition, we sampled six more plants which are linked to mind-altering practices through Mesoamerican ethnohistoric or ethnographic records. Analyses were conducted using UPLC-MS metabolomics-based analytical techniques, which significantly expand the possible detection of chemical compounds compared to previous biomarker-focused studies. Results include the detection of more than 9000 residual chemical features. We trace, for the first time, the presence of Mexican marigold (Tagetes lucida) in presumptive polydrug mixtures

Skeletal concentrations of lead, cadmium, zinc, and silver in ancient North American Pecos Indians.

Bone samples of 14 prehistoric North American Pecos Indians from circa 1400 A.D. were analyzed for lead, cadmium, zinc, and silver by graphite furnace atomic absorption spectrometry to establish the baseline levels of these elements in an ancient North American population. Measurements of outer and inner bone fractions indicate the former were contaminated postmortem for lead, zinc, and cadmium. The contamination-adjusted average (mean +/- SD) level of lead (expressed as the ratio of atomic lead to atomic calcium) in bones of the Indians was 8.4 +/- 4.4 x 10(-7)), which was similar to ratios in bones of ancient Peruvians (0.9 to 7.7 x 10(-7)) and significantly lower than ratios in bones of modern adults in England and the United States (210 to 350 x 10(-7]. The adjusted average concentrations (microgram per gram dry weight) of biologic cadmium, silver, and zinc in the Pecos Indian bones were 0.032 +/- 0.013, 0.094 +/- 0.044, and 130 +/- 66, as compared to concentrations of 1.8, 0.01 to 0.44, and 75 to 170 in the bones of modern people, respectively. Therefore, cadmium concentrations in Pecos Indian bones are also approximately 50-fold lower than those of contemporary humans. These data support earlier findings that most previously reported natural concentrations of lead in human tissues are erroneously high and indicate that natural concentrations of cadmium are also between one and two orders of magnitude lower than contemporary concentrations

Error-analysis and comparison to analytical models of numerical waveforms produced by the NRAR Collaboration

The Numerical-Relativity-Analytical-Relativity (NRAR) collaboration is a joint effort between members of the numerical relativity, analytical relativity and gravitational-wave data analysis communities. The goal of the NRAR collaboration is to produce numerical-relativity simulations of compact binaries and use them to develop accurate analytical templates for the LIGO/Virgo Collaboration to use in detecting gravitational-wave signals and extracting astrophysical information from them. We describe the results of the first stage of the NRAR project, which focused on producing an initial set of numerical waveforms from binary black holes with moderate mass ratios and spins, as well as one non-spinning binary configuration which has a mass ratio of 10. All of the numerical waveforms are analysed in a uniform and consistent manner, with numerical errors evaluated using an analysis code created by members of the NRAR collaboration. We compare previously-calibrated, non-precessing analytical waveforms, notably the effective-one-body (EOB) and phenomenological template families, to the newly-produced numerical waveforms. We find that when the binary's total mass is ~100-200 solar masses, current EOB and phenomenological models of spinning, non-precessing binary waveforms have overlaps above 99% (for advanced LIGO) with all of the non-precessing-binary numerical waveforms with mass ratios <= 4, when maximizing over binary parameters. This implies that the loss of event rate due to modelling error is below 3%. Moreover, the non-spinning EOB waveforms previously calibrated to five non-spinning waveforms with mass ratio smaller than 6 have overlaps above 99.7% with the numerical waveform with a mass ratio of 10, without even maximizing on the binary parameters.Comment: 51 pages, 10 figures; published versio

Codex Fejérváry-Mayer, p. 1

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The Codex Zouche-Nuttall, p. 57

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Codex Borbonicus, p. 12

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Codex Borgia, p. 56

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The Dresden Codex, pp. 49-50

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Codex Mendoza, Folio 60 recto (p. 127)

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