When is a Convento Kiva? : A Postcolonial-Critical Indigenous Critique of the Convento Kiva at Pecos National Historical Park

At Pecos National Historical Park there exists a Puebloan ceremonial structure known as a kiva located within the confines of a 17th century Spanish church. The placement of this kiva in the church implies a different name, convento kiva. Western historians and archaeologists have generated a metanarrative that presents the history of Pecos Pueblo and its inhabitants in a terminal format that is the Pueblo was doomed to abandonment once contact with the Spanish was made regardless of how the Pueblo Indians responded to Spanish colonialism. Contrary to this notion, the descendants of Pecos at the Pueblo of Jemez maintain a strong connection with Pecos Pueblo and since the 1990s have begun reasserting their presence at the Pueblo by contradicting the idea that the site is abandoned. In this study, I observe how the knowledge produced about the convento kiva serves as a lens of the larger colonial metanarrative of Pecos. This knowledge collective is bifurcated between Western/colonial knowledge in history and archaeology and indigenous knowledge in the oral and living traditions of Pecos descendants at Jemez. Using a combination of postcolonial and critical indigenous theory, I argue that colonial knowledge production used by historians and archaeologists work towards creating terminal narratives about Pecos while indigenous knowledge production works towards achieving goals of decolonization

A Self-Configuring 3-D Body Scanner

A flexible, self-configuring body scanner is described that is capable of capturing and merging range data from multiple views into a single coordinate system without the use of registration. The scanner uses two disconnected frames with embedded lights to merge the coordinate systems of multiple cameras. The frame also serves in finding the laser plane as the lasers are swept over the surface from multiple locations. Both hardware and software details are presented as well as techniques for automating most aspects of the scanner. A new implicit surface implementation is also described for processing and triangulating the resulting point clouds along with the design and use of measurement tools for analyzing the completed scan

Explanation for Anomalous Shock Temperatures Measured by Neutron Resonance Spectroscopy

Neutron resonance spectrometry (NRS) has been used to measure the temperature inside Mo samples during shock loading. The temperatures obtained were significantly higher than predicted assuming ideal hydrodynamic loading. The effect of plastic flow and non-ideal projectile behavior were assessed. Plastic flow was calculated self-consistently with the shock jump conditions: this is necessary for a rigorous estimate of the locus of shock states accessible. Plastic flow was estimated to contribute a temperature rise of 53K compared with hydrodynamic flow. Simulations were performed of the operation of the explosively-driven projectile system used to induce the shock in the Mo sample. The simulations predicted that the projectile was significantly curved on impact, and still accelerating. The resulting spatial variations in load, including radial components of velocity, were predicted to increase the apparent temperature that would be deduced from the width of the neutron resonance by 160K. These corrections are sufficient to reconcile the apparent temperatures deduced using NRS with the accepted properties of Mo, in particular its equation of state.Comment: near-final version, waiting for final consent from an autho

A Year (or Two) in the Life of PDV

Author Institution: Los Alamos National LaboratorySlides presented at the Heterodyne Velocimeter Workshop held at Lawrence Livermore National Laboratory, Livermore, California, July 20-21, 2006

Window Characterization at 1550 nm

Author Institution: Los Alamos National LaboratoryAuthor Institution: Sandia National LaboratoriesSlides presented at the Heterodyne Velocimeter Workshop held at Lawrence Livermore National Laboratory, Livermore, California, July 20-21, 2006

Valproic acid use in fertile women with genetic generalized epilepsies

Objectives: In genetic generalized epilepsies (GGE), valproic acid (VPA) is the most efficacious compound. However, due to teratogenicity and increased risk for impaired cognitive development after intrauterine exposure, its use in women of fertile age is strictly regulated but sometimes unavoidable. Methods: All patients with GGE treated at the outpatient clinic of a tertiary epilepsy center with at least one visit between January 2015 and April 2020 were included in this retrospective study. The rate of women aged 18 to 49 years taking VPA was compared to that of men of the same age group and to women > 49 years. Furthermore, in each group, clinical variables associated with VPA use were sought. Results: Twenty-eight out of 125 women of fertile age (22%) were treated with VPA, compared to 28 out of 56 men ≤ 49 years (50%; p = .002) and to 22 out of 40 female patients > 49 years (55%; p < .001). VPA dose was lower in fertile women compared to men, with no difference in seizure freedom rates. In women ≤ 49 years, multivariate analysis demonstrated age as the only variable independently associated with VPA use (OR 1.095; 95% CI 1.036-1.159). In the other two groups, no associated variables were identified. Conclusions: Despite warnings with respect to teratogenicity and impaired cognitive development with VPA, from 2015 to 2020, almost every fourth women of fertile age with GGE received this compound. Inevitably lower VPA doses in these women seem sufficient for favorable seizure freedom rates

Shock and Release Temperatures in Molybdenum

Shock and release temperatures in Mo were calculated, taking account of heating from plastic flow predicted using the Steinberg-Guinan model. Plastic flow was calculated self-consistently with the shock jump conditions: this is necessary for a rigorous estimate of the locus of shock states accessible. The temperatures obtained were significantly higher than predicted assuming ideal hydrodynamic loading. The temperatures were compared with surface emission spectrometry measurements for Mo shocked to around 60GPa and then released into vacuum or into a LiF window. Shock loading was induced by the impact of a planar projectile, accelerated by high explosive or in a gas gun. Surface velocimetry showed an elastic wave at the start of release from the shocked state; the amplitude of the elastic wave matched the prediction to around 10%, indicating that the predicted flow stress in the shocked state was reasonable. The measured temperatures were consistent with the simulations, indicating that the fraction of plastic work converted to heat was in the range 70-100% for these loading conditions