Destruction and abandonment practices at La Rinconada, Ambato Valley (Catamarca, Argentina)

Occupation of the Ambato Valley in north-western Argentina ended abruptly in around AD 1200, with destructive abandonment resulting in burnt and collapsed buildings. Analysis of broken pottery sherds from La Rinconada suggests that this may have been the outcome of a deliberate ‘closing’ activity. Re-fitted vessels were found to be largely complete despite extensive fragmentation; two portions of one vessel were 10m apart with a wall in between. Conjoining fragments of other vessels exhibited contrasting effects of thermal alteration, or were associated with lithic objects that may have been used to destroy them, or appeared to have been deliberately arranged. The evidence is altogether indicative of the intentional destruction and deposition of this material immediately prior to the burning of the site

The Site-Diluted Ising Model in Four Dimension

In the literature, there are five distinct, fragmented sets of analytic predictions for the scaling behaviour at the phase transition in the random-site Ising model in four dimensions. Here, the scaling relations for logarithmic corrections are used to complete the scaling pictures for each set. A numerical approach is then used to confirm the leading scaling picture coming from these predictions and to discriminate between them at the level of logarithmic corrections.Comment: 15 pages, 5 ps figures. Accepted for publication in Phys. Rev.

Evaluation of Three Rapid Tests for Diagnosis of P. Falciparum and P. Vivax Malaria in Colombia.

The diagnostic capacity of three malaria rapid diagnostic tests (RDTs), NOW-Malaria-ICT, OptiMAL-IT, and Paracheck-Pf, was evaluated against expert microscopy in Colombia. We tested 896 patients, of whom microscopy confirmed 139 P. falciparum, 279 P. vivax, and 13 mixed P.f/P.v infections and 465 negatives. Paracheck-Pf and NOW-malaria-ICT were more accurate in detecting P. falciparum (sensitivities 90.8% and 90.1%, respectively) in comparison with Optimal-IT (83.6%). NOW showed an acceptable Pf detection rate at low densities (< 500/microL), but resulted in a higher proportion of false positives. For P. vivax diagnosis, Optimal-IT had a higher sensitivity than NOW (91.0% and 81.4%, respectively). The choice between the two Pf/Pv detecting RDTs balances P. falciparum and P. vivax detection rates. Considering some degree of P. falciparum overtreatment and failure to detect all P. vivax cases as more acceptable than missing some cases of P. falciparum, we recommend careful implementation of NOW-malaria-ICT in areas where microscopy is lacking. The price is however still a constraint

Self-Averaging in the Three Dimensional Site Diluted Heisenberg Model at the critical point

We study the self-averaging properties of the three dimensional site diluted Heisenberg model. The Harris criterion \cite{critharris} states that disorder is irrelevant since the specific heat critical exponent of the pure model is negative. According with some analytical approaches \cite{harris}, this implies that the susceptibility should be self-averaging at the critical temperature ($R_\chi=0$). We have checked this theoretical prediction for a large range of dilution (including strong dilution) at critically and we have found that the introduction of scaling corrections is crucial in order to obtain self-averageness in this model. Finally we have computed critical exponents and cumulants which compare very well with those of the pure model supporting the Universality predicted by the Harris criterion.Comment: 11 pages, 11 figures, 14 tables. New analysis (scaling corrections in the g2=0 scenario) and new numerical simulations. Title and conclusions chang

El “Cordobazo”, a cuarenta años…

Mucho se ha escrito sobre este acontecimiento. El 40° aniversario se convirtió, además, en un espacio privilegiado para las memorias. Diversos actos, paneles, documentales, entrevistas televisivas, intervenciones artísticas y otro tipo de conmemoraciones transformaron el mes de mayo en uno especialmente privilegiado para la reflexión. Pero ¿qué se recordaba?, ¿qué se reivindicaba? Obviamente las respuestas no pueden ser unívocas y debieran convertirse en objeto de investigación. En efecto la – por momentos- saturación de actividades debiera llevarnos a considerar qué cambios, qué acontecimientos impactantes del pasado más reciente de Argentina pueden haber generado una receptividad especial hacia el pasado disruptivo de finales de los ‘60

Uso de un sistema para la gestión del aprendizaje (LMS) de código libre en la Universidad Tecnológica del Suroeste de Guanajuato (UTSOE)

The use of the Information and Communication Technologies (ICT) in Learning Environment allows achieving the maximum interaction between Teachers and Students.The Virtual Learning Environments are computer programs that benefit the learning facilitating the communication between users. Open Source software allow to create the own online modular learning environment with a fast placed in service. In the present paper the use of a Learning Management Systems (LMS) as continuous education tool is proposed

Acción colectiva y construcción de agendas en el marco de los ajustes provinciales, Córdoba, 1995-1997

El problema que se aborda es la relación entre acción colectiva y construcción de agendas. Asumiendo que la acción colectiva intenta construir un sentido público, se analizarán los factores que hicieron posible a ciertas demandas convertirse en cuestiones del debate público, o sea en temas de la agenda pública. Se considerará la coyuntura provincial de 1995-1997, que coincide con la implementación del ajuste provincial y presenta también características particulares dentro de la dinámica de la acción colectiva, lo que la convertiría en un momento de inflexión y, a su vez, formativo de  otros tipos de acción que se consolidarían a fines de siglo. Si bien el análisis se centra en un “caso” provincial creemos que permite mostrar cuestiones más generales que adquirieron visibilidad a nivel nacional, como las de las crisis regionales y los costos sociales delajuste y reforma del Estado implementados en la primera mitad de la década

Las cuestiones incidentales en el proceso contencioso ordinario de nulidad matrimonial: regulación y propuestas de celeridad

Sumario: 1. Introducción. I. La normativa vigente sobre la tramitación de las cuestiones incidentales. 1. Etapas del proceso incidental. 2. Las aportaciones de la Instrucción Dignitas connubii. II. Propuestas para la celeridad del proceso incidental. 1. Propuestas de actuación y consideraciones eclesiológico-procesales. 2. Propuestas concretas. 3. Propuestas normativas para el trámite procesal de las cuestiones incidentales. 4. Las cuestiones incidentales en el proceso brevior ante el Obispo Diocesano: apunte general. Conclusiones

Hypertension, Chronic Kidney Disease, and Renal Pathology in a Child with Hermansky-Pudlak Syndrome

We report a child with Hermansky-Pudlak Syndrome (HPS) and chronic kidney disease (stage II) with histological diagnosis of focal segmental glomerulosclerosis (FSGS). A 15-year-old male of Puerto Rico ancestry with history of HPS, hypertension (HTN), asthma, obesity, and chronic kidney disease (CKD) stage II presented with new-onset proteinuria without edema. His blood pressure had been controlled, serum creatinine had been 0.9–1.4 mg/dL, and first morning urine protein/creatinine ratio (UPC) ranged from 0.2 to 0.38. Due to persistent nonorthostatic proteinuria with CKD, renal biopsy was performed and FSGS (not otherwise specified) with chronic diffuse tubulopathy (tubular cytoplasmic droplets) and acute tubular injury was reported. Ceroid-like material is known to infiltrate tissues (i.e., lungs, colon, and kidney) in HPS, but the reason for the renal insufficiency is unknown. Nonspecific kidney disease and in one adult case IgA nephropathy with ANCA-positive glomerulonephritis have previously been reported in patients with Hermansky-Pudlak syndrome. To our knowledge, we report the first pediatric renal pathology case of HPS associated with CKD. This paper discusses presentation and management of renal disease in HPS

Variational Monte Carlo study of the ground state properties and vacancy formation energy of solid para-H2 using a shadow wave function

A Shadow Wave Function (SWF) is employed along with Variational Monte Carlo techniques to describe the ground state properties of solid molecular para-hydrogen. The study has been extended to densities below the equilibrium value, to obtain a parameterization of the SWF useful for the description of inhomogeneous phases. We also present an estimate of the vacancy formation energy as a function of the density, and discuss the importance of relaxation effects near the vacant site