The Catalyst participation in the manual at home Total Recall Track was both limited and quick, a TREC submission of practicality over research. The group’s decision to participate in TREC was made three weeks, and data was not loaded until six days, before the final submission deadline. As a result and to reasonably simulate an expedited document review process, a number of shortcuts were take...

Footwear worn by U.S. military aircrew personnel provides inadequate levels of protection from a prolonged cold and wet exposure when compared with that wore by ground-based, combat troops. On June 2, 1995, a U.S. Air Force F-16 C aircraft was shot down by a mobile SA-6 surface-to-air missile over Bosnia-Herzegovina while conducting a routine NATO reconnaissance mission. The pilot survived the ...

Distortions are often seen in the angular distribution of echo-power from VHF wind-profiling radars, suggesting that thin stable layers, within the air flow, are distorted and tilted from horizontal. In vertical shear of the horizontal wind, the distribution of the layer tilt angles becomes skewed. A case study using six days of VHF radar data and synoptic charts above western Europe indicates ...

In this paper, we will present the work on building a shallow parser for recognizing composite verb forms in Serbian – the forms that consist of an auxiliary verb and a main verb. The parser is made in Unitex, a corpus processing software, in the form of local grammars that rely on using morphological dictionaries of Serbian. The model was tested on a small corpus of texts, both written in Serb...

Using novel, high-frequency data on political strikes in Bangladesh, we examine the impact of political violence on firm-level export activity. Our data cover the universe of political strikes and export transactions in Bangladesh during 2010 to 2013. Using an event-study approach, we find that there is a 16.26 percent reduction in the baseline probability of exporting on the day of a strike. M...

This paper presents the results of an experimental study dealing with the influence of water/cement (w/c) ratio and curing temperature on the autogenous deformations and self-induced stresses in early-age concrete. Two concrete mixes, w/c ratio 0.33 and 0.37, were cured isothermally at 10, 20, 30 and 40°C. The linear deformations of a free specimen and the self-induced stresses of a fully restr...

Female Petrosaurus mearnsi develop orange throat coloration when gravid. This coloration was induced in the nonbreeding season (late fall) by exogenous progesterone delivered by subcutaneous implantation in Silastic capsules or intramuscular injection. Color change was first apparent after five days of administration. The time course of brightening was similar for the two methods. Color change ...

The superiority of Africanized over European honey bees in tropical and subtropical regions of the New World is both well documented and poorly understood. As part of an effort to try to understand the process by which the displacement of European bees occurred, we examined the ability of these two types of bees and of hybrids between the two to convert natural and artificial diets into usable ...

We applied a variety of parametric and non-parametric machine learning models to predict the probability distribution of rainfall based on 1M training examples over a single year across several U.S. states. Our top performing model based on a squared loss objective was a cross-validated parametric k-nearest-neighbor predictor that took about six days to compute, and was competitive in a world-w...