Archaeological Investigations of Hayes Shelter (40ML143) and Archaic Period Lithic Technology in the Central Duck River Basin, Tennessee

Hayes Shelter (40ML143) is a small rockshelter site located on the Duck River in Middle Tennessee. Archaeological investigations were conducted at the site during the summers of 1982 and 1983 by the University of Tennessee Department of Anthropology as part of the Columbia Archaeological Project. This thesis presents the results of these investigations and compares the lithic assemblages from Hayes Shelter with those recovered from seven additional sheltered sites and eight open sites in or near the Central Duck River Basin. By comparing the lithic assemblages from these 16 sites, information was gained on patterns of variability in the distribution of raw material types, tools, debitage, and flake debris. The resulting data suggest that on a regional basis, raw material selection strategies during the Middle Archaic commonly included locally available, but inferior quality cherts, while the strategies of the later periods relied on these resources less frequently. Models of prehistoric organizational strategies advanced through previous research have attempted to explain this pattern as reflecting a fundamental shift in settlement strategy, a shift necessitated by population crowding and resource scarcity resulting from the arid climatic conditions of the Hypsithermal Interval (ca. 8000 - 6000 B. P.). According to previous models, the distribution of lithics in tool and debitage classes and among flake debris reduction stages are also expected to show a shift at the Late Archaic transition. Middle Archaic assemblages are expected to be more homogeneous (more evenly distributed), while the later assemblages should have less even distributions, reflecting a more complex logistical strategy involving more long-distance transport of raw materials which were reduced in stages at various sites. However, the data in this study do not support the expected pattern. The composition of both Middle and Late Archaic assemblages in this sample appears to be influenced by resource selection, and this, in turn, is largely a function of site location. Change in raw material selection coincides with a climatic shift marked by increased precipitation at the close of the Hypsithermal Interval. It is suggested that restricted precipitation and a concomitant reduction in river and tributary discharge rates may have diminished the availability of usable chert gravels otherwise transported as bedload and deposited as lag gravel in the Central Duck River system. As a preliminary investigation of the regional patterns of lithic technology during the Archaic Period, this study suggests that site location (with respect to lithic resources) and site type (sheltered versus open-air) have considerable influence on the composition of lithic assemblages

Woodland Pottery Sourcing in the Carolina Sandhills

Research Report No. 29, Research Laboratories of Archaeology, University of North Carolina at Chapel Hill. Reports in this series discuss the findings of archaeological excavations and research projects undertaken by the RLA between 1984 and present

An Archaeological Survey and Assessment of the Proposed North Mecklenburg Water Treatment Plant Site Near Huntersville, Mecklenburg County, North Carolina

Technical Report No. 21, Research Laboratories of Archaeology, University of North Carolina at Chapel Hill. Reports in this series present the findings of archaeological surveys and test excavations completed by the RLA between 1983 and present

Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity

The precision of photometric and spectroscopic observations has been systematically improved in the last decade, mostly thanks to space-borne photometric missions and ground-based spectrographs dedicated to finding exoplanets. The field of eclipsing binary stars strongly benefited from this development. Eclipsing binaries serve as critical tools for determining fundamental stellar properties (masses, radii, temperatures and luminosities), yet the models are not capable of reproducing observed data well either because of the missing physics or because of insufficient precision. This led to a predicament where radiative and dynamical effects, insofar buried in noise, started showing up routinely in the data, but were not accounted for in the models. PHOEBE (PHysics Of Eclipsing BinariEs; http://phoebe-project.org) is an open source modeling code for computing theoretical light and radial velocity curves that addresses both problems by incorporating missing physics and by increasing the computational fidelity. In particular, we discuss triangulation as a superior surface discretization algorithm, meshing of rotating single stars, light time travel effect, advanced phase computation, volume conservation in eccentric orbits, and improved computation of local intensity across the stellar surfaces that includes photon-weighted mode, enhanced limb darkening treatment, better reflection treatment and Doppler boosting. Here we present the concepts on which PHOEBE is built on and proofs of concept that demonstrate the increased model fidelity.Comment: 60 pages, 15 figures, published in ApJS; accompanied by the release of PHOEBE 2.0 on http://phoebe-project.or

Job Stress Determinants: A Study on Job Order Employees of State Universities in Samar

Work motivation and performance among job order employees in different state universities in Samar is a determinant to the achievement of organization goals. Similar studies conducted focused on private companies, and mostly on faculty members in government agencies. The purpose of this study is to identify the various stressors that are mostly experienced that affect work productivity levels, and a factor to high job order employee turnover. Using the Principal Component Analysis, the most important variables were identified. Work attitudes among co-workers, heavy workload and job advancement and security were found to be the most significant stressors. Further studies with a wider geographical scope may be conducted for comprehensive results appropriate for improving work environment and policy formulation