Artículo de publicación ISIInspections represent key activities in construction projects. They allow coordinating the work of the main contractor and the subcontracted companies participating in the project. Today the inspection activities and the coordination process are done using information recorded into paper-based blueprints. As a consequence of it, coordinating the activities derived from inspection processes become expensive, slow and error-prone. This paper presents a mobile shared workspace, named COIN (Construction Inspector), which helps the participants in a construction project to overcome these limitations. COIN was particularly designed to be used on tablet PCs, but it is able to run on several computing devices. This workspace has been tested in a controlled work scenario. The preliminary results are highly positive, indicating this proposal could have an important impact on the construction management process.This work was partially supported by Fondecyt (Chile), grants No: 11060467 and 1080352

Environmental conditions can affect lichen morphology, physiology and chemistry. Some functional traits; like thickness of thallus layers, photosystems condition, and presence of photoprotective and antioxidant compounds are key to colonizing new sites, and can change depending on light and moisture availability. In the present study, we compared the morphology, physiology and chemistry of the native Chilean lichen Pseudocyphellaria flavicans from two Coastal populations (Nahuelbuta and Contulmo, Araucanía district), and one Andean population (Ralco, Bío-Bío district). Ralco is a more closed secondary forest, and can show dryer periods compared to Nahuelbuta and Contulmo. We found differences in thalli anatomy between populations. Ralco individuals had thinner upper cortex than Nahuelbuta individuals. Contulmo individuals had similar upper cortex thickness compared to the other two populations. We also found differences in the response of the maximal efficiency of the PSII (Fv/Fm) to desiccation and in the in situ values measured. We did not find differences between populations in the chemical traits. The differences between populations could be attributed to differences in local environmental conditions, namely moisture and light.Keywords: Pseudocyphellaria flavicans, lichen ecophysiology, lichen anatomy, lichen chemistry, foliose lichens. RESUMENLas condiciones ambientales afectan la morfología, fisiología y química de los líquenes. Ciertos rasgos funcionales, como el grosor de las distintas capas del talo, estado de los fotosistemas, y presencia de compuestos fotoprotectores y antioxidantes son claves para colonizar nuevos sitios y pueden variar dependiendo de la disponibilidad de luz y humedad. En este trabajo se comparó la morfología, fisiología y química de individuos del liquen nativo de Chile Pseudocyphellaria flavicans de dos poblaciones de la Cordillera de la Costa (Nahuelbuta y Contulmo, Región de la Araucanía) y una de la Cordillera de los Andes (Ralco, Región del Bío-Bío). Ralco es un bosque más cerrado y presenta periodos más secos, comparado con Nahuelbuta y Contulmo. Se encontraron diferencias significativas en la anatomía del talo entre poblaciones. Los individuos de Ralco presentaron una corteza superior más delgada en relación con los de Nahuelbuta. Los individuos de Contulmo presentaron una corteza similar a las otras dos poblaciones. También se encontraron diferencias en las curvas de respuesta de la eficiencia máxima del PSII (Fv/Fm) a la desecación y los valores medidos in situ. No se encontraron diferencias entre poblaciones en las variables químicas medidas. Las diferencias entre poblaciones podrían atribuirse a diferencias en las condiciones ambientales locales, principalmente humedad y luminosidad.Palabras clave: Pseudocyphellaria flavicans, ecofisiología de líquenes, anatomía de líquenes, química de líquenes, líquenes foliosos.

Colombia is one of the countries that has opted for a model of restorative justice to repair the victims of the armed conflict. To accomplish this, it has created a series of reparation laws which involve building scenarios to foster a call for remembrance (duty of memory) and in which the truth can be cleared up. The objective of this study is to provide a discourse analysis of how the notion of memory is constructed within the official reparation policies in Colombia. A discourse analysis of Law 975, Law 1408, and Law 1448 was carried out, using the logic of interpretive repertoires. As a result, it was possible to identify four repertoires: Institutional, Archival, Commemorative, and Reparative. The increasing globalization of reparation policies and the use of memory for the purpose of institutionalization that hinders the possibility of interpreting the past in another way, is discussed.

Heart rate (HR) is an essential indicator of health in the human body. It measures the number of times per minute that the heart contracts or beats. An irregular heartbeat can signify a severe health condition, so monitoring heart rate periodically can help prevent heart complications. This paper presents a novel wearable sensing approach for remote HR measurement by a compact resistance-to-microcontroller interface circuit. A heartbeat’s signal can be detected by a Force Sensing Resistor (FSR) attached to the body near large arteries (such as the carotid or radial), which expand their area each time the heart expels blood to the body. Depending on how the sensor interfaces with the subject, the FSR changes its electrical resistance every time a pulse is detected. By placing the FSR in a direct interface circuit, those resistance variations can be measured directly by a microcontroller without using either analog processing stages or an analog-to-digital converter. In this kind of interface, the self-heating of the sensor is avoided, since the FSR does not require any voltage or bias current. The proposed system has a sampling rate of 50 Sa/s, and an effective resolution of 10 bits (200 mΩ), enough for obtaining well-shaped cardiac signals and heart rate estimations in real time by the microcontroller. With this approach, the implementation of wearable systems in health monitoring applications is more feasible.

Históricamente se ha reconocido en la educación ambiental una tradición participativa y horizontal. Pese a ello, las investigaciones empíricas describen bajos niveles de inclusión de niños, niñas y adolescentes en este tipo de educación y en su rama investigativa: son escasas las investigaciones que miden esta intervención, limitándose a describir casos de estudio. Para precisar aquello, se realizó una revisión bibliográfica sistematizada de las investigaciones de educación ambiental escritas en español desde 1999 a 2019, en las cuales participaron niños, niñas y adolescentes en diferentes grados de involucramiento. Se codificó el nivel de participación por medio de la escalera de Roger Hart, la cual describe ocho peldaños distintos. Esto fue correlacionado mediante análisis estadísticos y pruebas no paramétricas con el año y país de publicación, el tipo de educación y la metodología empleada. Los resultados indican un aumento progresivo de los niveles de participación infantil y adolescente de1999 a la fecha, como también niveles más altos en la educación ambiental no formal, sise consideran metodologías cualitativas para investigar (autores de Argentina y Cuba). Se discute la importancia de repensar el lugar de niños, niñas y adolescentes en el desarrollo de la educación e investigación ambiental.