A Government-Binding Based Parser for Warlpiri, a Free-Word Order Language

Free-word order languages have long posed significant problems for standard parsing algorithms. This thesis presents an implemented parser, based on Government-Binding (GB) theory, for a particular free-word order language, Warlpiri, an aboriginal language of central Australia. The words in a sentence of a free-word order language may swap about relatively freely with little effect on meaning: the permutations of a sentence mean essentially the same thing. It is assumed that this similarity in meaning is directly reflected in the syntax. The parser presented here properly processes free word order because it assigns the same syntactic structure to the permutations of a single sentence. The parser also handles fixed word order, as well as other phenomena. On the view presented here, there is no such thing as a "configurational" or "non-configurational" language. Rather, there is a spectrum of languages that are more or less ordered. The operation of this parsing system is quite different in character from that of more traditional rule-based parsing systems, e.g., context-free parsers. In this system, parsing is carried out via the construction of two different structures, one encoding precedence information and one encoding hierarchical information. This bipartite representation is the key to handling both free- and fixed-order phenomena. This thesis first presents an overview of the portion of Warlpiri that can be parsed. Following this is a description of the linguistic theory on which the parser is based. The chapter after that describes the representations and algorithms of the parser. In conclusion, the parser is compared to related work. The appendix contains a substantial list of test cases ??th grammatical and ungrammatical ??at the parser has actually processed.

Embodiment and Manipulation Learning Process for a Humanoid Hand

Babies are born with simple manipulation capabilities such as reflexes to perceived stimuli. Initial discoveries by babies are accidental until they become coordinated and curious enough to actively investigate their surroundings. This thesis explores the development of such primitive learning systems using an embodied light-weight hand with three fingers and a thumb. It is self-contained having four motors and 36 exteroceptor and proprioceptor sensors controlled by an on-palm microcontroller. Primitive manipulation is learned from sensory inputs using competitive learning, back-propagation algorithm and reinforcement learning strategies. This hand will be used for a humanoid being developed at the MIT Artificial Intelligence Laboratory.

Impacto de la prestación de servicios de salud bajo el modelo de red en el municipio de Sogamoso

El presente estudio es de tipo analítico, cohorte retrospectiva, tiene como objeto estudiar un modelo de prestación de servicios de salud bajo el concepto de red integrada, conformada por las clínicas privadas de segundo y tercer nivel de complejidad del municipio de Sogamoso (Boyacá). Se analizó el período comprendido entre los años 2012 a 2014, donde se puede evidenciar la implementación y puesta en marcha del modelo. En el mes de agosto del año 2012, la estrategia de asociatividad la adelantaron las tres instituciones de manera libre y autónoma, utilizando como guía la metodología propuesta por la Cepal en el año 2010; las diferencias entre esta metodología y el modelo utilizado se deben a las particularidades de las clínicas y del contexto en el que se desarrolló. Este modelo de atención surgió de la necesidad de prestar los servicios de salud ofertados por las clínicas, acorde con su capacidad instalada, al total de la población de la Nueva EPS en Sogamoso, que en ese momento coyuntural no se estaba cumpliendo en el municipio, y ninguna de las instituciones tenía la infraestructura individual para atender a toda su población. El resultado de la asociación de las tres clínicas se logró gracias a un grado de confianza previo entre los directivos de las instituciones y posterior a varias reuniones, en las que se tomó la determinación de trabajar con el modelo de Unión Temporal, ya que no son una persona jurídica diferente a las que la conforman Se demuestra el impacto de este modelo asociativo de cada una de las organizaciones que la componen evaluando cuatro ámbitos como la capacidad de aprendizaje, capacidad de gestión estratégica, economía de escala y poder de negociación y externalidades. Para la recolección de la información se utilizaron las bases de datos de las instituciones hospitalarias con la información de los indicadores de oportunidad, así como el incremento de la facturación y del recaudo antes y después de la formación de la Unión Temporal; adicionalmente se realizaron encuestas a los directores de las clínicas como fuente de información para desarrollo de nuevos productos, reducción de costos, ampliación de la oferta hospitalaria, establecimientos de alianza, puesta en marcha de servicios comunes y apertura de nuevos mercados. Sumado a lo anterior, se realizó una encuesta adicional a los usuarios del nuevo producto desarrollado. Como resultado de este estudio se encuentra beneficio en todos los ámbitos evaluados para las instituciones que interactúan bajo este modelo y se espera que obtengan los mismos beneficios que los demás actores participantes en él, como las EAPB, los cuales no hacen parte del presente estudio. En Colombia no se observa la existencia de un modelo similar en sistema de salud, a pesar del leve intento de la Ley 1438 del 2011 por iniciar la conformación de redes; por esta razón se puede decir que este estudio marca un derrotero para que las organizaciones de salud tengan un modelo de articulación ante la falta de desarrollos de esquemas de red y por tratarse de un modelo con ausencia de reglamentación.

Asistencia a Educación Preescolar y Desempeño Escolar en el Largo Plazo, Evidencia para Colombia

Reconociendo la importancia que tienen las inversiones durante los primeros años del ciclo de vida, en este documento se estima el efecto de la asistencia a preescolar sobre el desempeño escolar de largo plazo, medido a través del puntaje en las áreas de lenguaje y matemáticas de la prueba Saber 11 en Colombia. Para ello, se realiza la aproximación empírica a través de la metodología de variables instrumentales. Los resultados indican que la asistencia a un año adicional de educación preescolar reduce en 0.121 desviaciones estándar el puntaje obtenido en el área de lenguaje. No obstante, se identifica un efecto diferenciado a partir de variables que dan cuenta del estatus socioeconómico de los individuos.

Techniques and principles in language teaching.

Esta obra da una visión práctica de las diferentes metodologías y las recientes innovaciones en la enseñanza de idiomas. Ofrece, paso a paso, instrucciones prácticas, nuevos enfoques e ideas de enseñanza para los profesores con menos experiencia.

Análisis contrastivo inglés-español : morfología, funcionalidad y semántica del imperfecto y del pretérito para estudiantes de español lengua extranjera.

Resumen tomado de la publicación

Selección de atributos predictivos del rendimiento académico de estudiantes en un modelo de B-Learning

Resumen tomado de la publicación

ARX, model thinking: taxonomy and operativity of an architectural process

The purpose of this work was to establish a taxonomy of hand made model construction as a platform for an approach to project an operative method in architecture. It was therefore studied and catalogued in a systematic approach a broad model production in the work of ARX. A wide range of families and sub-families of models were found, with different purposes according to each phase of development, from searching steps for a new possible configuration to detailed refined decisions. This working method revealed as most relevant characteristics, the grounds for a potential personal reflection and open discussion on project method, its flexibility on space modeling, an accuracy on the representation of real construction situations and its constant and stimulating opening to new suggestions. This research helped on a meta-reflection about this method, having been useful on creating a consciousness of processes that pretend to become an autonomous language, knowledge that might become useful to those who pretend to implement a haptic modus operandi in the work of an architectural project.

Formação continuada de professores e melhoria do exercício docente

O presente trabalho teve como ponto de partida os resultados dos rendimentos escolares apresentados pelo SAEB (Sistema de Avaliação da Educação Básica) e o SAEPE (Sistema de Avaliação Escolar de Pernambuco), frente às ações de intervenções promovidas pelas políticas públicas implementadas pelo governo de Pernambuco, através dos programas de formação continuada, direcionados na perspectiva de reverter os baixos índices do rendimento escolar, o que nos possibilitou a delinear objetivos que nos permitissem a identificar a relação entre os indicadores do SAEB, SAEPE e Programas de Formação Continuada no redimensionamento do saber fazer docente e implicações na melhoria do desempenho docente, bem como identificar limites e possibilidades da formação na melhoria do desempenho docente, em razão dos indicadores apresentados. As transformações do mundo têm interferido de forma contundente no campo da educação, bem como nos vários aspectos da gestão educacional, escolar, curricular e particularmente na formação continuada, com vistas no desempenho docente, tendo como objeto crescente a atenção dos pesquisadores com atuação na educação. As políticas educacionais no Brasil vêm demonstrado preocupação com a qualidade do ensino ofertada pela escola pública, decorrente das pressões dos organismos internacionais, que veem na educação a solução dos problemas enfrentados por um mundo cada vez mais globalizado, de transformações e descobertas tecnológicas que caracterizam hoje, a chamada sociedade do conhecimento. Tal contexto, em que a escola pública brasileira se encontrava, mobilizou os gestores a buscarem ações de intervenção no sentido de reverter o quadro tão comprometedor que o ensino público da Educação Básica brasileira se apresentava. O repensar das práticas pedagógicas vivenciadas no contexto escolar, recai sobre o professor, a responsabilidade do resultado que a escola apresenta. Falar da prática pedagógica recai necessariamente na formação inicial e continuada desse professor. Para sua realização utilizou-se uma abordagem quantitativa e qualitativa. As técnicas de coleta de dados foram aplicação de questionários a 100 professores da educação básica da rede pública, entrevistas com cinco formadores e análise dos documentos relacionados com a política de formação continuada. O estudo demonstrou que o modelo proposto, pouco tem contribuído para o desenvolvimento profissional docente, não envolvendo, portanto, o professor diretamente no processo formativo, com exceção dos que participam de alguns programas (SAEB / SAEPE) que visam diretamente à melhoria dos índices de aprendizagem em língua portuguesa e matemática, na perspectiva de que a formação os instrumentalize a aplicar técnicas, que a formação continuada não atende nem suas necessidades, nem da escola. Os demais professores só se encontram uma vez por ano, em estilo de grande evento, enquanto as formações ocorrem de forma desarticulada e fragmentada. Em consequência, foram apresentadas algumas reflexões no intuito de provocar e contribuir na revisão da concepção de formação continuada vivenciada pelos professores da rede pública do ensino de Pernambuco.

The southern sotho speech identification/discrimination test construction

This paper contains a speech discrimination test in Southern Sotho language (an African language spoken in Southern Africa).

The effectiveness of assessment learning objects produced using pair programming

Pair Programming is a technique from the software development method eXtreme Programming (XP) whereby two programmers work closely together to develop a piece of software. A similar approach has been used to develop a set of Assessment Learning Objects (ALO). Three members of academic staff have developed a set of ALOs for a total of three different modules (two with overlapping content). In each case a pair programming approach was taken to the development of the ALO. In addition to demonstrating the efficiency of this approach in terms of staff time spent developing the ALOs, a statistical analysis of the outcomes for students who made use of the ALOs is used to demonstrate the effectiveness of the ALOs produced via this method.

How does a weakened Atlantic thermohaline circulation lead to an intensification of the ENSO-south Asian summer monsoon interaction?

This study investigates the change of the El Niño–Southern Oscillation (ENSO)-South Asian summer monsoon interaction in response to a weakened Atlantic thermohaline circulation (THC) by applying an additional freshwater flux into the North Atlantic. The simulated results indicate that the weakened THC leads to intensified ENSO-South Asian summer monsoon relationship and enhanced South Asian summer monsoon interannual variability. Furthermore, it is suggested that this intensification of the ENSO-monsoon relationship is likely due to the enhanced ENSO variability induced by the weakened THC. This study indicates that the low frequency fluctuation of Atlantic SSTs might have an influence on South Asian summer monsoon interannual variability and the ENSO-monsoon interaction, and suggests a nonlocal mechanism for the observed decadal-multidecadal modulation of ENSO-monsoon relationship.

From activity to active learning: drawing and dialogue interaction in virtual learning environments for computer-supported collaborative work in design.

Virtual learning environments (VLEs) would appear to be particular effective in computer-supported collaborative work (CSCW) for active learning. Most research studies looking at computer-supported collaborative design have focused on either synchronous or asynchronous modes of communication, but near-synchronous working has received relatively little attention. Yet it could be argued that near-synchronous communication encourages creative, rhetorical and critical exchanges of ideas, building on each other’s contributions. Furthermore, although many researchers have carried out studies on collaborative design protocol, argumentation and constructive interaction, little is known about the interaction between drawing and dialogue in near-synchronous collaborative design. The paper reports the first stage of an investigation into the requirements for the design and development of interactive systems to support the learning of collaborative design activities. The aim of the study is to understand the collaborative design processes while sketching in a shared white board and audio conferencing media. Empirical data on design processes have been obtained from observation of seven sessions with groups of design students solving an interior space-planning problem of a lounge-diner in a virtual learning environment, Lyceum, an in-house software developed by the Open University to support its students in collaborative learning.

Observation and origin of an interannual salinity anomaly in the Mozambique Channel

A positive salinity anomaly of 0.2 PSU was observed between 50 and 200 m over the years 2000–2001 across the Mozambique Channel at a section at 17°S which was repeated in 2003, 2005, 2006, and 2008. Meanwhile, a moored array is continued from 2003 to 2008. This anomaly was most distinct showing an interannual but nonseasonal variation. The possible origin of the anomaly is investigated using output from three ocean general circulation models (Estimating the Circulation and Climate of the Ocean, Ocean Circulation and Climate Advanced Modeling, and Parallel Ocean Program). The most probable mechanism for the salinity anomaly is the anomalous inflow of subtropical waters caused by a weakening of the northern part of the South Equatorial Current by weaker trade winds. This mechanism was found in all three numerical models. In addition, the numerical models indicate a possible salinization of one of the source water masses to the Mozambique Channel as an additional cause of the anomaly. The anomaly propagated southward into the Agulhas Current and northward along the African coast.

An integrative model of amino acid metabolism in the liver of the lactating dairy cow

The objective of this work was to construct a dynamic model of hepatic amino acid metabolism in the lactating dairy cow that could be parameterized using net flow data from in vivo experiments. The model considers 22 amino acids, ammonia, urea, and 13 energetic metabolites, and was parameterized using a steady-state balance model and two in vivo, net flow experiments conducted with mid-lactation dairy cows. Extracellular flows were derived directly from the observed data. An optimization routine was used to derive nine intracellular flows. The resulting dynamic model was found to be stable across a range of inputs suggesting that it can be perturbed and applied to other physiological states. Although nitrogen was generally in balance, leucine was in slight deficit compared to predicted needs for export protein synthesis, suggesting that an alternative source of leucine (e.g. peptides) was utilized. Simulations of varying glucagon concentrations indicated that an additional 5 mol/d of glucose could be synthesized at the reference substrate concentrations and blood flows. The increased glucose production was supported by increased removal from blood of lactate, glutamate, aspartate, alanine, asparagine, and glutamine. As glucose Output increased, ketone body and acetate release increased while CO2 release declined. The pattern of amino acids appearing in hepatic vein blood was affected by changes in amino acid concentration in portal vein blood, portal blood flow rate and glucagon concentration, with methionine and phenylalanine being the most affected of essential amino acids. Experimental evidence is insufficient to determine whether essential amino acids are affected by varying gluconeogenic demands. (C) 2004 Published by Elsevier Ltd.