An introduction of the concepts of fuzzy logic in the area of Human Computer Interaction. The use of current approaches to model the research, and analysis of data are reviewed and a less traditional method based on measurement of degree of participation with scales is introduced and applied to collect the data using surveys. This document assesses this design and examines the analysis and inferences that could be made by using this approach and by applying new fuzzy concepts.The exposed approaches show a deeper understanding of linguistic terms that could lead to richer inferences from data.

The goal of this Master Thesis is to broaden the availability of the documents which make part of the Humboldt Digital Library - HDL (http://avhumboldt.net/). The HDL is a ongoing research project held by the University of Applied Sciences Offenburg and the University of Kansas containing several digital volumes with the work of Alexander von Humboldt. The Open Archives Initiative OAI (http://www.openarchives.org/) supports the interconnection of scholar, academic and research repositories, disseminating their contents along its network of harvesters. Implementing the Open Archives Initiative – Protocol for Metadata Harvesting (OAI-PMH) within the Humboldt Digital Library opens the gates of the library to several harvesters around the world and makes it easier to find the documents that the library hosts.

The use of evidence based software engineering (EBSE) and the use of systematic literature reviews (SLRs) in software engineering has been growing in the last years. In 2004 Juristo et. al. analyzed the maturity level of the knowledge about testing techniques by examining the previous 25 years (1978-2004) of Testing Technique Experiments. We believe it is time to update the state of the art in testing technique experiments by using a SLR. Objective: To analyzed the maturity level of the knowledge about testing techniques by examining testing technique experiments between years 2000 and 2013. This work tries to complement the previous analysis of Juristo et. al. in 2004 where they analyzed the maturity level of the knowledge about testing techniques by examining the previous 25 years (1978-2004). Method: We undertook a systematic review of papers testing techniques experiments carried out between years 2000 and 2013. Studies were classified with respect to the testing technique family and grouped by their affinity as regards the techniques studied. Results: In the search and selection process we identified 22 relevant papers reporting 26 testing techniques published in Software Engineering conferences and journals between 2000 and mid-2013, after data extraction we reduce this to a list of 16 primary studies belong to four families. Based on this primary studies we extracted and analyzed the necessary information to compare them between each other’s in order to generate our appreciations.

Tesis presentada por Cristóbal Bernal para obtener el título de Ingeniero Civil en 1911. En ella presenta los resultados de investigación acerca del abasto de aguas para Bogotá. A lo largo del documento se discute acerca de la cantidad de agua necesaria para la ciudad, la calidad de ella, la forma en que se distribuye y la importancia del río San Francisco para cumplir este fin.

Miel I is a 188 m high RCC dam in Colombia, at elevation 454 m a.s.l. The RCC mix has a cement content of 85 to 160 kg/m3. To meet contractual schedule, the original design of an upstream face made of slip formed reinforced concrete was changed to a Carpi drained exposed composite Polyvinylchloride geomembrane (= PVC geocomposite) system, placed on a 0.4 m thick zone of RCC material enriched with cement grout and vibrated. Placement of the geocomposite system in horizontal stages allowed starting of dam impoundment while RCC placement was still ongoing at higher elevation. The geocomposite system was completed in 2002, before finishing of complementary concrete works. ISAGEN, the owner of the dam, constantly monitors the dam’s and geocomposite system’s performance. The average leakage of the dam registered since the first impoundment of the reservoir has been of 2 l/s for the geocomposite’s drainage system, and of 25 l/s from the abutments. Such levels are below the design parameters that defined the maximum acceptable leakage through the geocomposite in 9.7 l/s and the maximum acceptable leakage through the abutments in 30 l/s. The measured leakage has never surpassed the historical values (with stable lecture through 11 years), or overcome the maximum allowed drainage design values defined during the design stage. After 11 years of good performance and operation, in summer 2013 ISAGEN decided to have a comprehensive monitoring of the general conditions and the weathering behaviour of the waterproofing geocomposite at Miel I. The objectives of the investigation were: assessing the reason of small cuts that had been detected and repaired (in total 15 in 11 years on a 31,000 square meters surface), assessing the conditions of the PVC geocomposite, ascertaining at which extent its characteristics had changed over service, and evaluating if the weathering behaviour was in accordance with the expected durability. Investigation started with inspection at the upstream face and in the drainage galleries, followed by sampling of the exposed PVC geocomposites. Testing in an independent laboratory allowed comparing the physical and chemical properties of the aged geocomposite sample collected at the dam with the physical and chemical properties of the same geocomposite as manufactured. Evaluation of test results, based also on most recent research on geomembrane weathering mechanisms, completed the investigation. Results confirmed that the behaviour of the PVC geocomposite is extremely good and fully in line with expectations. The paper, after a brief outline of the geocomposite system installed at the dam, will describe all steps of the investigation, and detail the test results and the conclusions drawn.

In this work, an hybrid, self-configurable, multilayered and evolutionary subsumption architecture for cognitive agents is developed. Each layer of the multilayered architecture is modeled by one different Machine Learning System (MLS) based on bio-inspired techniques such as Extended Classifier Systems (XCS), Artificial Immune Systems (AIS), Neuro Connectionist Q-Learning (NQL) and Learning Classifier Systems (LCS) among others. In this research an evolutionary mechanism based on Gene Expression Programming (GEP) to self-configure the behaviour arbitration between layers is suggested. In addition, a co-evolutionary mechanism to evolve behaviours in an independent and parallel fashion is used. The proposed approach was tested in an animat environment using a multi-agent platform and it exhibited several learning capabilities and emergent properties for self-configuring internal agent’s architecture.

El presente estudio describe una propuesta alternativa para entender y detectar evidencias del fenómeno denominado “greenwashing” a nivel de la firma, tomando como referencia un incidente crítico ambiental de una empresa multinacional perteneciente al sector de la minería del carbón a gran escala en Colombia. Se soporta en la tipología de las transgresiones del “greenwashing”, identificando comportamientos explicativos contradictorios por parte de una compañía, incluyendo sus reportes de sostenibilidad. El estudio ilustra un planteamiento teo?rico soportado en un caso de estudio en donde se identifican elementos para reconocer señales de reportes difusos y en últimas, permita detectar el “greenwashing” corporativo.

Impreso en el que se recopila diversa documentación relacionada con el porvenir de la industria agrícola en Colombia, con el objetivo de que los legisladores conozcan sobre el tema y tengan aptitudes para tomar determinaciones con miras a mejoras nacionales en el agro. Dentro de la documentación disponible en el documento, se puede encontrar un proyecto de ley sobre la industria pecuaria y la recomendación de la raza bovina Hereford para promover la ganadería en Colombia.

Estudio y análisis sobre el diseño que deben tener las casas de los obrerros en España. El texto está dividido en tres partes, en la primera de ella, se discuten sobre las condiciones técnicas e higiénicas que deben contar las viviendas. En la segunda, se hace un estudio comparativo de las casas obreras en otros países y, finalmente, la última parte se destina a la aplicación de datos y reglas precedentes al caso de España.

Climate change, environmental legislation and binding targets for renewable energy, alongside an increased focus on the economic benefits of energy and fuel conservation, are driving the adoption of new technologies as sources of energy. With these dynamics, it is evident that waste heat recovery technologies can play a key role in reducing in reducing indirectly the CO2 footprint of existing fossil power generation and achievement of renewable energy targets. Since the recovered heat is effectively ‘free of charge’, there is a direct positive impact on the energy costs to the end user. This project aims to implement a Organic Rankine Cycle system in a Petrochemical plant, in this case a Low density Polyethylene Plant because is generated hug quantities of heat waste in the polymerization reaction during 8000 hours/year. Also is evaluated the Technical and economical advantages in order to check the feasibility of the implementation of Organic Rankine Cycle System in a Petrochemical Plant. The impact of this Project could give a good guide of the feasibility of the implement ORC system in Industrial process, because the most projects launched with this Technology have been usually used in Geothermal Applications.