The Chanka: Archaeological Research in Andahuaylas (Apurimac), Peru

In AD 1438 a battle took place outside the city of Cuzco that changed the course of South American history. The Chanka, a powerful ethnic group from the Andahuaylas region, had begun an aggressive program of expansion. Conquering a host of smaller polities, their army had advanced well inside the territory of their traditional rival, the Inca. In a series of unusual maneuvers, the Inca defeated the invading Chanka forces and became the most powerful people in the Andes. Many scholars believe that the defeat of the Chanka represents a defining moment in the history of South America as the Inca then continued to expand and establish the largest empire of the Americas. Despite its critical position in South American history, until recently the Chanka heartland remained unexplored and the cultural processes that led to their rapid development and subsequent defeat by the Inca had not been investigated. From 2001 to 2004, Brian Bauer conducted an archaeological survey of the Andahuaylas region. This project represents an unparalleled opportunity to examine theoretical issues concerning the history and cultural development of late-prehistoric societies in this area of the Andes. The resulting book includes an archaeological analysis on the development of the Chanka and examines their ultimate defeat by the Inca. Series: Monographs 6

The emergence of Inka dominion: Historical and chronometric assessments

Este data set fue realizado en base a una exhaustiva compilación de fechados radiocarbónicos realizados en contextos arqueológicos a lo largo del imperio Inca. La primera versión de la misma data de 1998 y fue utilizada como dato primario para una publicación científica donde se ponía en cuestión la cronología tradicional del Imperio Inca basada en fuentes escritas. Por causas ajenas a los investigadores, este manuscrito nunca fue publicado, pero sí ampliamente circulado dentro de la comunidad científica internacional. Posteriormente, en el año 2007 se realizó una revisión de bibliografía, se actualizó la base de datos y se escribió un nuevo manuscrito inédito que fue presentado por sus autores en una mesa redonda sobre cronología Inca organizada por Dumbarton Oaks Precolumbian Studies, pero nunca publicado. En esa misma mesa redonda, y utilizándolos mismos datos primarios, Verónica Williams presentó “Southern Empire Chronology: Some Questions about Inca Archaeology“. En este dataset se incluye la versión actualizada de la planilla de fechados radiocarbónicos (con fecha 2007) y los manuscritos inéditos de 1998 y 2007.Fil: D'Altroy, Terence N.. Columbia University; Estados UnidosFil: Williams, Veronica Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto de las Culturas. Universidad de Buenos Aires. Instituto de las Culturas; ArgentinaFil: Bauer, Brian S.. University of Illinois; Estados Unido

The Settlement History of the Lucre Basin (Cusco, Peru)

This article reports the results of archaeological survey from Oropesa to Andahuayllilas, Peru

Thermal and magnetic properties of a low-temperature antiferromagnet Ce4_4Pt12_{12}Sn25_{25}

We report specific heat ($C$) and magnetization ($M$) of single crystalline Ce$_4$Pt$_{12}$Sn$_{25}$ at temperature down to $\sim$50mK and in fields up to 3T. $C/T$ exhibits a sharp anomaly at 180mK, with a large $\Delta C/T\sim$30J/molK$^2$-Ce, which, together with the corresponding cusp-like magnetization anomaly, indicates an antiferromagnetic (AFM) ground state with a N\'eel temperature $T_N$=180mK. Numerical calculations based on a Heisenberg model reproduce both zero-field $C$ and $M$ data, thus placing Ce$_4$Pt$_{12}$Sn$_{25}$ in the weak exchange coupling $J<J_c$ limit of the Doniach diagram, with a very small Kondo scale $T_K\ll T_N$. Magnetic field suppresses the AFM state at $H^*\approx$0.7T, much more effectively than expected from the Heisenberg model, indicating additional effects possibly due to frustration or residual Kondo screening.Comment: 8 pages, 7 figures, accepted for publication in Phys. Rev.

A brief measure of perceived clinician support by patients with bipolar spectrum disorders

The quality of the patient-provider relationship is regarded as an essential ingredient in the treatment of serious mental illnesses, and is associated with favorable outcomes including improved treatment adherence. However, monitoring the strength and influence of provider support in clinical settings is challenged by the absence of brief, psychometrically sound, and easily administered assessments. The purpose of this study was to test the factor structure and examine the clinical and psychosocial correlates of a brief measure of provider support. Participants were recruited from the continuous improvement for veterans in care-Mood Disorders study (N = 429). The hypothesized factor structure exhibited a good fit with the data. At baseline, provider support was associated with higher levels of service access and medication compliance and lower levels of alcohol use and suicidality. Regular monitoring of provider support may provide useful when tailoring psychosocial treatment strategies, especially in routine care settings.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78161/1/briefmeasure.pd

Structure and Anisotropic Properties of BaFe2-xNixAs2 (x = 0, 1, 2) Single Crystals

The crystal structure, anisotropic electrical resistivity and magnetic susceptibility, as well as specific heat results from single crystals of BaFe2As2, BaNi2As2, and BaFeNiAs2 are surveyed. BaFe2As2 properties demonstrate the equivalence of C(T), Fisher's d(XT)/dT, and dp/dT results in determining the antiferromagnetic transition at TN = 132(1) K. BaNi2As2 shows a structural phase transition from a high-temperature tetragonal phase to a low-temperature triclinic (P-1) phase at T0 = 131 K.The superconducting critical temperature for BaNi2As2 is well below T0 and at Tc = 0.69 K. BaFeNiAs2 does not show any sign of superconductivity to 0.4 K and exhibits properties similar to BaCo2As2, a renormalized paramagnetic metal.Comment: 17 pages, 6 figures, 1 tabl

Early (and Later) LHC Search Strategies for Broad Dimuon Resonances

Resonance searches generally focus on narrow states that would produce a sharp peak rising over background. Early LHC running will, however, be sensitive primarily to broad resonances. In this paper we demonstrate that statistical methods should suffice to find broad resonances and distinguish them from both background and contact interactions over a large range of previously unexplored parameter space. We furthermore introduce an angular measure we call ellipticity, which measures how forward (or backward) the muon is in eta, and allows for discrimination between models with different parity violation early in the LHC running. We contrast this with existing angular observables and demonstrate that ellipticity is superior for discrimination based on parity violation, while others are better at spin determination.Comment: 31 pages, 19 figures. References added, minor modifications made to section

Properties of the Strange Axial Mesons in the Relativized Quark Model

We studied properties of the strange axial mesons in the relativized quark model. We calculated the $K_1$ decay constant in the quark model and showed how it can be used to extract the $K_1 (^3P_1) - K_1 (^1P_1)$ mixing angle ($\theta_K$) from the weak decay $\tau \to K_1 \nu_\tau$. The ratio $BR(\tau \to \nu_\tau K_1 (1270))/BR(\tau\to \nu_\tau K_1(1400))$ is the most sensitive measurement and also the most reliable since the largest of the theoretical uncertainties factor out. However the current bounds extracted from the TPC/Two-Gamma collaboration measurements are rather weak: we typically obtain $-30^o \lesssim \theta_K \lesssim 50^o$ at 68\% C.L. We also calculated the strong OZI-allowed decays in the pseudoscalar emission model and the flux-tube breaking model and extracted a $^3P_1 - ^1P_1$ mixing angle of $\theta_K \simeq 45^o$. Our analysis also indicates that the heavy quark limit does not give a good description of the strange mesons.Comment: Revised version to be published in Phys. Rev. D. Minor changes. Latex file uses revtex version 3 and epsfig, 4 postcript figures are attached. The full postcript version with embedded figures is available at ftp://ftp.physics.carleton.ca/pub/theory/godfrey/ocipc9512.ps.