A CERAMIC ANALYSIS OF TWO TERMINAL CLASSIC MAYA SITES: EXAMINING ECONOMIC TIES THROUGH POTTERY

The objective of this thesis is to examine the relationship between two Maya sites, Cahal Pech and Xunantunich, during Terminal Classic (780-950 CE) through ceramic variability. Until recently the Terminal Classic (TC) was often misunderstood as a time of the “Maya collapse.” The TC period is now understood as a complex time with shifting political tides possibly due to environmental pressures. New evidence from a TC deposit at Cahal Pech known as “south of H-1” shows an abundance of a specific decorated ware known as Mount Maloney Black (MMB), a type more closely associated with the neighboring site of Xunantunich. With the close proximity between the two sites (roughly 10 km) and given that Xunantunich was a politically influential civic center during this time, one might postulate that the MMB at Cahal Pech may indicate an influx from Xunantunich due to political or economic control over the site. However, the rim forms at Cahal Pech reflect that of an earlier style of MMB. This fact may indicate an emulation of the style by the residents of Cahal Pech, suggesting multiple production sites, or an early abandonment of Cahal Pech. This thesis uses the combined strategies of microphotography through the use of a portable digital microscope as well as thin section petrographic analysis to examine MMB pottery sherds from both Cahal Pech and Xunantunich to determine if they came from the same source. These approaches to ceramic analysis allow us to compare the mineral composition of the sherds from each site and to gather information about the ‘recipes’ used to make the MMB. From the data that were collected and analyzed, I suggest that there is some statistical significance between the mineral inclusions used in the MMB between the sites. Other lines of evidence such as texture, quantity of minerals, and thickness of sherds indicate possibly more than one production site. Comparing the MMB sherds found at Plaza H of Cahal Pech to Terminal Classic MMB at Xunantunich possibly sheds light on the interactions between these two sites and give a broader understanding of regional activities during the Terminal Classic

Learning From Our Limits: Lessons to Hold Tight

United to prioritize our humanity, we clear the plate to more comfortably make space for what matters most. Educators achieve this by focusing on priority Standards, partnering with students for content, and reframing our needs to use assessment as learning

Police Interactions with the Mentally Ill: The Role of Procedural Justice

Police encounters with mentally ill individuals that involve the use of force by police are relatively infrequent, but sometimes quite volatile. Deinstitutionalization of the mentally ill, poorly funded and fragmented community treatment alternatives, plus increasingly restrictive civil commitment criteria have led to increased contacts with the police. Police need to exercise restraint when using force against individuals suffering from a mental disorder. There is a clear need for specialized crisis intervention police training for dealing with the mentally ill. Procedural justice theory offers a promising approach to improving police-citizen interactions. According to this framework, the fairness with which an individual is treated during an encounter by an authority figure, such as the police, can affect the perceived legitimacy of these interactions and any disposition that flows from them. This is particularly important regarding interactions between the police and those suffering from a mental disorder

Identification of the Human Erythrocyte Glucose Transporter (GLUT1) ATP Binding Domain: A Dissertation

The human erythrocyte glucose transport protein (GLUT1) interacts with, and is regulated by, cytosolic ATP. This study asks the following questions concerning ATP modulation of GLUT1 mediated sugar transport. 1) Which region(s) of GLUT1 form the adenine nucleotide-binding domain? 2) What factors influence ATP modulation of sugar transport? 3) Is ATP interaction with GLUT1 sufficient for sugar transport regulation? The first question was addressed through peptide mapping, n-terminal sequencing, and alanine scanning mutagenesis of GLUT1 using [32P]-azidoATP, a photoactivatable ATP analog. We then used a combination of transport measurements and photolabeling strategies to examine how glycolytic intermediates, pH, and transporter oligomeric structure affect ATP regulation of sugar transport. Finally, GLUT1 was reconstituted into proteoliposomes to determine whether ATP is sufficient for the modulation of GLUT1 function in-vitro. This thesis presents data supporting the hypothesis that residues 332-335 contribute to the efficiency of adenine nucleotide binding to GLUT1. In addition, we show that AMP, acidification, and conversion of the transporter to its dimeric form antagonize ATP regulation of sugar transport. Finally, we present results that support the proposal that ATP interaction with GLUT1 is sufficient for transport modulation

Network hub locations problems: the state of the art

Cataloged from PDF version of article.Hubs are special facilities that serve as switching, transshipment and sorting points in many-to-many distribution systems. The hub location problem is concerned with locating hub facilities and allocating demand nodes to hubs in order to route the traffic between origin-destination pairs. In this paper we classify and survey network hub location models. We also include some recent trends on hub location and provide a synthesis of the literature. (C) 2007 Elsevier B.V. All rights reserved

On the single assignment p-Hub center problem

Cataloged from PDF version of article.We study the computational aspects of the single-assignment p-hub center problem on the basis of a basic model and a new model. The new model's performance is substantially better in CPU time than different linearizations of the basic model. We also prove the NP-Hardness of the problem. (C) 2000 Elsevier Science B.V. All rights reserved

Structural, Vibrational and Thermodynamic Properties of AgnCu34-n Nanoparticles

We report results of a systematic study of structural, vibrational and thermodynamical properties of 34-atom bimetallic nanoparticles from the AgnCu34-n family using model interaction potentials as derived from the embedded atom method and in the harmonic approximation of lattice dynamics. Systematic trends in the bond length and dynamical properties can be explained largely on arguments based on local coordination and elemental environment. Thus increase in the number of silver atoms in a given neighborhood introduces a monotonic increase in bond length while increase of the copper content does the reverse. Moreover, based on bond lengths of the lowest coordinated (6 and 8) copper atoms with their nearest neighbors (Cu atoms), we find that the nanoparticles divide into two groups with average bond length either close to (~ 2.58 A) or smaller (~ 2.48 A) than that in bulk copper, accompanied by characteristic features in their vibrational density of states. For the entire set of nanoparticles, vibrational modes are found above the bulk bands of copper/silver. Furthermore, a blue shift in the high frequency end with increasing number of copper atoms in the nanoparticles is traced to a shrinkage of bond lengths from bulk values. The vibrational densities of states at the low frequency end of the spectrum scale linearly with frequency as for single element nanoparticles, however, the effect is more pronounced for these nanoalloys. The Debye temperature was found to be about one third of that of the bulk for pure copper and silver nanoparticles with a non-linear increase with increasing number of copper atoms in the nanoalloys.Comment: 37 pages, 12 figure