Due to the usual incompleteness of information representation, any approach to assign a semantics to logic programs has to rely on a default assumption on the missing information. The stable model semantics, that has become the dominating approach to give semantics to logic programs, relies on the Closed World Assumption (CWA), which asserts that by default the truth of an atom is false. There ...

To investigate cognitive and general performance effects of low-level exposure to an organophosphorus chemical warfare agents (CWA), we evaluated behavior in rats inhalation-exposed (whole body, 60 min duration) to GB (1.7 mg/m3 – 4.0 mg/m3 X 1; 4.0 mg/m3 x 3) and GF (1.6-5.2 mg/m X 1). Before exposure, rats were trained on a variable-interval 56 sec schedule of reinforcement (VI56), which serv...

Direct experimentation with chemical warfare agents (CWA) to study important problems such as their permeation across protective barrier materials, decontamination of equipment and facilities, or the environmental transport and fate of CWAs is not feasible because of the obvious toxicity of the CWAs and associated restrictions on their laboratory use. The common practice is to use "simulants," ...

It has been suggested that autism-specific imitative deficits may be reduced or even spared in object-related activities. However, most previous research has not sufficiently distinguished object movement reenactment (learning about the ways in which object move) from imitation (learning about the topography of demonstrated actions). 20 children with autism (CWA) and 20 typically developing chi...

A geo-ontology can be built around a Geographic Information System (GIS) and enriched with a firstorder logic language under the closed-world assumption (CWA). This extended system provides knowledge representation formalisms that are aimed to describe general conceptual information. They can also be used in the construction of the knowledge base of a reasoning tool. In this paper an environmen...

Leaf dry matter content (LDMC) is a central vegetation property that plays an important role in assessments of ecosystem functions. In this study, LDMC was estimated from hyperspectral airborne image by inversion of the INFORM radiative transfer model using Continuous Wavelet Analysis (CWA). Stand parameters were collected for 33 sample plots during a field campaign in July 2013 in the Bavarian...

When using ontologies to access instance data, it can be useful to make a closed world assumption (CWA) for some predicates and an open world assumption (OWA) for others. The main problem with such a setup is that conjunctive query (CQ) answering becomes intractable already for inexpressive description logics such as DL-Lite and EL. We take a closer look at this situation and carry out a fine-g...

Chemical warfare agents (CWA) continue to present a threat to civilian populations and military personnel in operational areas all over the world. Reliable measurements of CWAs are critical to contamination detection, avoidance, and remediation. The current deployed systems in United States and foreign militaries, as well as those in the private sector offer accurate detection of CWAs, but are ...

Introduction and Motivation Driven by the need to learn from vast amounts of text data, efforts throughout natural language processing, information extraction, databases. and AI are coming together to build large-scale knowledge bases. Academic systems such as NELL [14], Reverb [7], Yago [11], and DeepDive [16] continuously crawl the web to extract relational information. Industry projects such...

The profiles of Hα in a number of cool Ap stars are anomalous. Broad wings, indicative of temperatures in the range 7000-8000K end abruptly in narrow cores. The widths of these cores are compatible with those of dwarfs with temperatures of 6000K or lower. This profile has been known for Przybylski’s star, but it is seen in other cool Ap’s. The Hβ profile in several of these stars shows a simila...