This paper describes a system for the computer understanding of English. The system answers questions, executes commands, and accepts information in normal English dialog. It uses semantic information and context to understand discourse and to disambiguate sentences. It combines a…

La Antártida es indiscutiblemente una de las zonas menos afectadas por la actividad humana en el planeta, sin embargo el incremento de la presencia humana registrado en los últimos años puede tener importantes efectos sobre el ecosistema antártico. Las consecuencias…

El proyecto consiste en el rediseño de la identidad corporativa de la Unidad ABC del Municipio de Quito, para generar mayor información y reconocimiento de la unidad por parte de los estudiantes. El área que se querría cubrir es de…

In numerous animal groups, individuals within the group often wish to impose
their preferences and guide the group in a certain direction. Conflicting preferences are
common in these situations and, in order to maintain group cohesion, collective decisionmaking
needs to…

The regime of floods and droughts in the Pantanal wetlands determines the distribution and abundance of the wildlife, vegetation and ecological processes. Cattle ranching and fisheries, the main economic activities in this floodplain, are extremely influenced by and depend on…

In the United States, healthcare-associated infections are a huge source of medical and
economic burden. Annually, there are 1.7 million cases of healthcare-associated infection in
U.S. hospitals, which cause an estimated 98,987 deaths. Direct medical cost is also massive,
estimated…

Howler monkeys (Alouatta sp.) use loud call vocalizations for both intra-group
and intergroup communication (Oliveira & Ades, 2004; Whitehead, 1989; da Cunha
& Byrne, 2006; Holzmann, 2012). While much of the literature focuses on the effect
of loud call vocalizations…

In polyandrous species, sexual selection acts both before (precopulatory) and after
(postcopulatory) mating on traits that are important for reproductive success. Precopulatory traits
are important for mate acquisition and include weapons and ornaments. Postcopulatory traits
include components of sperm quantity…

The range of habitats a plant species is able to occupy is determined by a combination of
biotic and abiotic factors. Herbivores have long been predicted to play an important role in
species sorting by exaggerating the differences between soil…

Current global health interventions tend to focus on the “big 3” diseases:
malaria, AIDS, and tuberculosis. This focus has led to a dearth of funding for and
research into diseases that are also endemic in areas where the big 3…