A Compilation Strategy for Numerical Programs Based on Partial Evaluation

This work demonstrates how partial evaluation can be put to practical use in the domain of high-performance numerical computation. I have developed a technique for performing partial evaluation by using placeholders to propagate intermediate results. For an important class of numerical programs, a compiler based on this technique improves performance by an order of magnitude over conventional compilation techniques. I show that by eliminating inherently sequential data-structure references, partial evaluation exposes the low-level parallelism inherent in a computation. I have implemented several parallel scheduling and analysis programs that study the tradeoffs involved in the design of an architecture that can effectively utilize this parallelism. I present these results using the 9- body gravitational attraction problem as an example.

Memory Usage Inference for Object-Oriented Programs

We present a type-based approach to statically derive symbolic closed-form formulae that characterize the bounds of heap memory usages of programs written in object-oriented languages. Given a program with size and alias annotations, our inference system will compute the amount of memory required by the methods to execute successfully as well as the amount of memory released when methods return. The obtained analysis results are useful for networked devices with limited computational resources as well as embedded software.

On-the-Fly Maintenance of Series-Parallel Relationships in Fork-Join Multithreaded Programs

A key capability of data-race detectors is to determine whether one thread executes logically in parallel with another or whether the threads must operate in series. This paper provides two algorithms, one serial and one parallel, to maintain series-parallel (SP) relationships "on the fly" for fork-join multithreaded programs. The serial SP-order algorithm runs in O(1) amortized time per operation. In contrast, the previously best algorithm requires a time per operation that is proportional to Tarjan’s functional inverse of Ackermann’s function. SP-order employs an order-maintenance data structure that allows us to implement a more efficient "English-Hebrew" labeling scheme than was used in earlier race detectors, which immediately yields an improved determinacy-race detector. In particular, any fork-join program running in T₁ time on a single processor can be checked on the fly for determinacy races in O(T₁) time. Corresponding improved bounds can also be obtained for more sophisticated data-race detectors, for example, those that use locks. By combining SP-order with Feng and Leiserson’s serial SP-bags algorithm, we obtain a parallel SP-maintenance algorithm, called SP-hybrid. Suppose that a fork-join program has n threads, T₁ work, and a critical-path length of T[subscript ∞]. When executed on P processors, we prove that SP-hybrid runs in O((T₁/P + PT[subscript ∞]) lg n) expected time. To understand this bound, consider that the original program obtains linear speed-up over a 1-processor execution when P = O(T₁/T[subscript ∞]). In contrast, SP-hybrid obtains linear speed-up when P = O(√T₁/T[subscript ∞]), but the work is increased by a factor of O(lg n).

Implementation of training programs in self-regulated learning strategies in Moodle format : Results of a experience in higher education

Resumen tomado de la publicaci??n

The ISSA Pedagogical Standards: a tool to influence quality in early childhood programs

The ISSA Pedagogical Standards were first published in 2001 as a network-developed tool that defined quality in teaching practices and the classroom environment and captured the changes that had occurred in the region since 1994 when the Step by Step Program, an initiative to promote democratic principles in early childhood development and education, was launched. The Program was built on belief that each child has the right to receive maximum support for the development of his or her full potential, and this work should be done in partnership and close cooperation with families, communities and professionals

Abstraction: From Transistors to Computers and from Bits to Programs

Takes the Tanenbaum (Structured Computer Organisation) approach to show how application of successive levels of abstraction allow us to understand how computers are made from transitors and how they are programmed.

SIDUR: development of an information system, using controlled vocabulary designed to the characterization and sample of population with and without disability, attended by Rehabilitation programs, University of Rosario

Introduction: the statistical record used in the Field Academic Programs (PAC for it’s initials in Spanish) of Rehabilitation denotes generalities in the data conceptualization, which complicates the reliable guidance in making decisions and provides a low support for research in rehabilitation and disability. In response, the Research Group in Rehabilitation and Social Integration of Persons with Disabilities has worked on the creation of a registry to characterize the population seen by Rehabilitation PAC. This registry includes the use of the International Classification of Functioning, Disability and Health (ICF) of the WHO. Methodology: the proposed methodology includes two phases: the first one is a descriptive study and the second one involves performing methodology Methontology, which integrates the identification and development of ontology knowledge. This article contextualizes the progress made in the second phase. Results: the development of the registry in 2008, as an information system, included documentary review and the analysis of possible use scenarios to help guide the design and development of the SIDUR system. The system uses the ICF given that it is a terminology standardization that allows the reduction of ambiguity and that makes easier the transformation of health facts into data translatable to information systems. The record raises three categories and a total of 129 variables Conclusions: SIDUR facilitates accessibility to accurate and updated information, useful for decision making and research.

Description and analysis of pulmonary rehabilitation care programs current state in four cities of Colombia

Purpose: there are many studies reporting the benefits of pulmonary rehabilitation, but few of them exhibit the behavior and activities of these services. This article presents the characteristics of services, parts management and training level of team members, in addition to the variables or instruments used to measure the effectiveness and impact in these programs. Method: it was made a cross sectional convenience sample which included seven pulmonary rehabilitation services in four Colombian cities (Bogotá, Medellín, Manizales and Cali), selected by the coverage, for having at least one year of experience and for being formally established and recognized nationwide. The interdisciplinary team of each service answered a survey that was validated through a pilot test and expert consensus. Participation was voluntary. Results: labor onset pulmonary rehabilitation services correspond to an average of a decade, with COPD and asthma pathologies of attention. The programs are characterized by an outpatient treatment with an average duration of eight to twelve weeks, with a frequency of an hour three times a week. Also, the director of the service is regularly a pulmonologist and the coordinator a physiotherapist (57.14%). The posgradual training of these professionals is notable, and they report to have procedural, administrative and communicative skills, but qualify regular there research skills. The physical and technological resources are well tested. 71.42% have done impact studies, but only 28.57% have been published. All have in common training in upper limbs, lower limbs, respiratory muscles, counseling, functional assessment and quality of life. The effectiveness and impact of programs is measured by the walking test, quality of life questionnaires and activities of daily living.

Performance indicators for the physical therapy program’s field academic programs at the Universidad del Rosario for 2004-2007.

Introducción: El programa de Fisioterapia de la Universidad del Rosario, en su responsabilidad social de generar un impacto positivo en la comunidad y en su propósito de formar profesionales, cuenta con los Programas Académicos de Campo (PAC) que se consideran una fuerte estrategia de extensión de la Universidad. Los PAC contribuyen a la adquisición de competencias para el desarrollo de procesos de acción-actuación-creación en los estudiantes para que resuelvan problemas en un espacio real de ejercicio profesional. Bajo esta perspectiva los PAC del programa de Fisioterapia muestran su comportamiento a través de la medición de indicadores de proceso y resultados propuestos desde el Programa con el fin de proveer información útil para la reorientación y permanente actualización de los contenidos programáticos en las asignaturas y en los mismos PAC. Materiales y métodos: En el siguiente artículo se presenta un análisis de los indicadores de demanda por género, régimen de Seguridad Social en Salud, procedimiento y morbilidad de los Programas Académicos de Campo Integral Pediátrico, Integral de Adultos y Rehabilitación cardíaca y/o pulmonar, con el fin de establecer las características de la población objeto de la prestación de los servicios y procurar información verificable que dé soporte para la construcción de procesos de cambio dentro de la dinámica de mejoramiento continuo que debe tener cualquier institución. Este seguimiento es útil para la toma de decisiones de planeación académica que contribuye a mejorar los procesos de planeación y a facilitar el cumplimiento de los propósitos de formación para cada práctica, y de esta manera ayuda a ser elemento de análisis para directivas, instructores y estudiantes en la orientación del proceso de gestión académico-administrativo, y a retroalimentar los procesos de planeación y programación académica. Resultados: Los resultados arrojados en el análisis de los datos de la morbilidad en los programas académicos de campo muestran el siguiente comportamiento durante los años 2004, 2005, 2006 y 2007. Conclusiones: En el PAC pediátrico la mayor incidencia es de asma con un 37,2% y la más baja incidencia es para luxación congénita de cadera y enfermedad mental de origen central con un 0,1%. El 58% de los usuarios es de género masculino, y el 81% del total pertenece al régimen contributivo. En la morbilidad del PAC de adultos la mayor incidencia es de EPOC, con un 23,2%, y la menor incidencia es de lumbalgia, con un 2,4%. La mayoría de usuarios atendidos (58%) son hombres, y el 58% de los usuarios pertenece al régimen contributivo. En el PAC de rehabilitación cardíaca y/o pulmonar la mayor incidencia fue de EPOC, con un 40%; seguido de neumonía, con 17%; y con una menor incidencia para asma, con un 2%. El 54% de los usuarios son hombres y el 91% del total pertenece al régimen subsidiado.

Continuous improvement programs as processes for organizational learning: a case study of a company in the food products industry

This article intends to show the relationships between quality practices and the process of organizational learning. When we look at the literature about programs of continuous improvement we see that theoreticians consider that the process of organizational learning is a superior stage in the quality culture adopted by companies. To investigate this possibility, we put together a series of indicators taken from classic authors who have written about organizational learning. Adopting a multiple methodology, we applied these indicators to two plants belonging to the Nestlé food product company which have introduced continuous improvement programs over the last two years.

Prevalencia de síntomas respiratorios en avicultores de una empresa de Bogotá

Este estudio identifico la prevalencia de síntomas respiratorios en avicultores de una empresa de Bogotá, mediante la aplicación del: “CUESTIONARIO EPIDEMIOLOGICO ESTANDARIZADO DE SINTOMAS RESPIRATORIOS. ATS-DLD-78-A (FERRIS 1978)”. Participaron 113 trabajadores del sector avícola comúnmente conocidos como galponeros, quienes son responsables de alimentar y cuidar a las aves (pollos), además de veterinarios. La prevalencia general de síntomas respiratorios fue del 45,1% (n=50), siendo el síntoma de sibilancias, la manifestación más prevalente representando el 34,4% (n=39). Se encontró asociación significativa entre la manifestación clínica de sibilancias y género, siendo mayor la prevalencia en los hombres que en las mujeres (22,8% vs. 5,4%, p=0,008). En el síntoma respiratorio de tos se encontró asociado al género (p=0,012), siendo el género masculino el más afectado (29,8% vs. 10,7%). El tiempo de exposición > 8 años está asociado al síntoma respiratorio de sibilancias (p=0,032). No se encontraron relaciones significativas entre hábito de tabaquismo, edad, raza y nivel de escolaridad. Siendo la prevalencia general de síntomas respiratorios alta es necesario fortalecer el uso de elementos de protección personal adecuados para la protección del tracto respiratorio y de gran importancia incluir a los trabajadores en programas de vigilancia epidemiológica para el control de los síntomas respiratorios de tal forma que se les realice un seguimiento anual que incluya exámenes ocupacionales de ingreso y periódicos al igual que exámenes complementarios dirigidos al factor de riesgo.

Estudio descriptivo de las prácticas y percepción de seguridad alimentaria y nutricional del municipio de Pacho Cundinamarca, 2014

El presente documento tuvo como objetivo el diagnóstico de las prácticas de alimentación de interés en nutrición y salud pública y la percepción de seguridad alimentaria en los hogares del municipio de Pacho departamento de Cundinamarca, información que permitió hacer análisis descriptivo de las frecuencias de consumo de los grupos alimentarios y la cualificación de seguridad en cuanto al acceso a los alimentos. Lo anterior se desarrolló mediante la adaptación de dos de los cinco formularios estructurados para la encuesta nacional de situación nutricional en Colombia del año 2010 liderado por el ministerio de protección social; las encuestas fueron realizadas a 400 personas jefe de hogar de acuerdo a muestreo aleatorio estratificado. El estudio mostró que hay inseguridad alimentaria total en un 34,7%, lo que incluye una percepción de inseguridad en un 3% del total de las familias encuestadas. Por último el estudio permitió concluir la importancia de fortalecer los programas de gobierno existentes, en aras de permitir el favorecimiento de la seguridad alimentaria y nutricional y el cambio de hábitos de nutrición desde una perspectiva intersectorial donde se incluyan los factores sociales, culturales, económicos y ecológicos de la comunidad orientados a estilos de vida saludables transcendentales en prevenir y disminuir el riesgo de enfermedades crónicas no transmisibles.

On the design of education conditional cash transfer programs and non education outcomes: the case of teenage pregnancy

We investigate the effect of education Conditional Cash Transfer programs (CCTs) on teenage pregnancy. Our main concern is with how the size and sign of the effect may depend on the design of the program. Using a simple model we show that an education CCT that conditions renewal on school performance reduces teenage pregnancy; the program can increase teenage pregnancy if it does not condition on school performance. Then, using an original data base, we estimate the causal impact on teenage pregnancy of two education CCTs implemented in Bogot´a (Subsidio Educativo, SE, and Familias en Acci´on, FA); both programs differ particularly on whether school success is a condition for renewal or not. We show that SE has negative average effect on teenage pregnancy while FA has a null average effect. We also find that SE has either null or no effect for adolescents in all age and grade groups while FA has positive, null or negative effects for adolescents in different age and grade groups. Since SE conditions renewal on school success and FA does not, we can argue that the empirical results are consistent with the predictions of our model and that conditioning renewal of the subsidy on school success crucially determines the effect of the subsidy on teenage pregnancy

La política comercial de Estados Unidos en el marco de la Organización Mundial del Comercio. Discurso vs. comportamiento con relación a prácticas anticompetitivas

El objetivo principal de esta monografía es identificar cuáles son las razones que justifican las contradicciones entre el discurso y el comportamiento de Estados Unidos en el marco de la Organización Mundial del Comercio, particularmente con relación a prácticas anticompetitivas derivadas del programa de protección a la agricultura del país. Para ello se analizan el interés nacional y los elementos de la seguridad nacional a partir de los cuales éste se ha construido. También se evalúan los procesos de formulación de política comercial y las interacciones entre los representantes políticos, las asociaciones de productores y el sector privado para mostrar como este comportamiento contradictorio corresponde a la legitimización de un interés particular.

Indicadores para evaluar programas de orientación educativa. 'Indicators to evaluate educational guidance programs'.

Resumen basado en el de la publicación. Resumen y título en castellano y en inglés