Incursiones en Occidente: comentarios a una ponencia del Dr Maluquer de Motes en Santiago de Compostela (1973)

Lo primero que hay que señalar es que siendo episódica la dedicación del autor al estudio de la Cultura Castreña del Noroeste (Maluquer, 1954; 1970; 1973A Y B; 1975), algunos de sus trabajos, en especial el documentado estudio en la Ha de España dirigida por Menéndez Pidal y el que es objeto de nuestro análisis, constituyeron hitos en el estudio del mundo castreño.

El profesor Juan Maluquer de Motes y la investigación protohistórica en el curso inferior del río Ebro

La publicación en 1954 y 1958 de los Estudios Críticos 1 y JI dedicados al poblado de la primera Edad del Hierro del Alto de la Cruz (Cortes de Navarra) supuso, sin ningún género de dudas, el arranque de la sistematización de la secuencia cultural y poblacional del área del valle medio del Ebro en el período correspondiente al Bronce Final y las fases más antiguas de la Edad del Hierro.

El profesor Juan Maluquer de Motes y los estudios sobre Tartessos

La investigación sobre Tartessos fue siempre una de la líneas de trabajo favoritas del Prof. Maluquer de Motes, quien, en el momento de definir la que constituyó su última gran línea de investigación, el programa PIP (Programa de Investigación Protohistórica), prestó una especial atención al estudio de las comunidades prerromanas de Andalucía y Extremadura, especialmente tartesias e iberas, destacando entre los trabajos publicados en este marco las intervenciones de Ma . E. Aubet en la necrópolis de Setefilla (Lora del Río, Sevilla), y del propio Maluquer de Motes en el palacio-santuario de Cancho Roano (Zalamea de la Serena, Badajoz).

El Dr. Joan Maluquer de Motes i el Paleolític: evocació d'unes troballes ocasionals

Dins d'aquest volum de merescut homenatge a la memoria del meu mestre, el Dr. Joan Maluquer de Motes i Nicolau, m'ha correspost glossar les seves esporadiques incursions en els moments més antics de la Prehistoria i 1'Epipaleolítico Eren les fases que més s'allunyaven del seu veritable interes professional i vocacional: la Protohistoria.

La contribució a l"epigrafia ibèrica de Joan Maluquer de Motes

En l"era de la informació digital, quan l"especialització en els coneixements els ha fet créixer alhora que els ha atomitzat fins al punt que no resulta fàcil tornar a reunir unes branques del saber cada cop més divergents, esdevé un exercici necessari repensar la contribució feta per alguns personatges polièdrics que van precedir-nos i que, amb una innegable capacitat de treball, van saber traçar lúcides línies de recerca simultànies en diversos registres. En especial, urgeix recuperar les generacions"d"enmig", aquells que no es poden definir com a pioners sensu stricto que són els que han despertat més atenció en la historiografia arqueològica , els que partien ja d"algunes tasques iniciades, però que, en la pràctica, no deixaven d"ésser exploradors de camins no trepitjats. Entre aquests, Joan Maluquer de Motes hi ocupa un lloc destacat. Mestre d"un dels signants, el qual pertany a una de les darreres promocions que van arribar a temps de copsar un estil de docència irrepetible, rebuda per uns joves tangencials, atents de forma simultània a la difusió d"altres mètodes de registre dels treballs de camp que corrien de mà en mà per mitjà de fotocòpies deslluïdes durant els primers anys vuitanta. Com no evocar a qui el principi de la malaltia final sorprengué impartint un curs de doctorat sobre epigrafia ibèrica? La contribució de Maluquer en diverses facetes de la prehistòria, la protohistòria i l"organització dels estudis universitaris és enorme, d"això tracten altres treballs reunits en aquest dossier. A la seva profunda mirada d"ulls clars no va escapar l"epigraia paleohispànica, terreny en el qual també va realitzar aportacions no sempre ben compreses, quan no insuficientment valorades.

Assessing the dynamic behavior of wsn motes and rfid semi-passive tags for temperature monitoring.

A notorious advantage of wireless transmission is a significant reduction and simplification in wiring and harness. There are a lot of applications of wireless systems, but in many occasions sensor nodes require a specific housing to protect the electronics from hush environmental conditions. Nowadays the information is scarce and nonspecific on the dynamic behaviour of WSN and RFID. Therefore the purpose of this study is to evaluate the dynamic behaviour of the sensors. A series of trials were designed and performed covering temperature steps between cold room (5 °C), room temperature (23 °C) and heated environment (35 °C). As sensor nodes: three Crossbow motes, a surface mounted Nlaza module (with sensor Sensirion located on the motherboard), an aerial mounted Nlaza where the Sensirion sensor stayed at the end of a cable), and four tags RFID Turbo Tag (T700 model with and without housing), and 702-B (with and without housing). To assess the dynamic behaviour a first order response approach is used and fitted with dedicated optimization tools programmed in Matlab that allow extracting the time response (?) and corresponding determination coefficient (r2) with regard to experimental data. The shorter response time (20.9 s) is found for the uncoated T 700 tag which encapsulated version provides a significantly higher response (107.2 s). The highest ? corresponds to the Crossbow modules (144.4 s), followed by the surface mounted Nlaza module (288.1 s), while the module with aerial mounted sensor gives a response certainly close above to the T700 without coating (42.8 s). As a conclusion, the dynamic response of temperature sensors within wireless and RFID nodes is dramatically influenced by the way they are housed (to protect them from the environment) as well as by the heat released by the node electronics itself; its characterization is basic to allow monitoring of high rate temperature changes and to certify the cold chain. Besides the time to rise and to recover is significantly different being mostly higher for the latter than for the former.

Floresta española y hermoso ramillete de agudezas, motes, sentencias y graciosos dichos de la discrecion cortesana /

Mode of access: Internet.

Floresta española y hermoso ramillete de agudezas, motes, sentencias y graciosos dichos de la discrecion cortesana /

Mode of access: Internet.

In-Motes EYE:a real time application for automobiles in wireless sensor networks

Wireless sensor networks have been identified as one of the key technologies for the 21st century. In order to overcome their limitations such as fault tolerance and conservation of energy, we propose a middleware solution, In-Motes. In-Motes stands as a fault tolerant platform for deploying and monitoring applications in real time offers a number of possibilities for the end user giving him in parallel the freedom to experiment with various parameters, in an effort the deployed applications to run in an energy efficient manner inside the network. The proposed scheme is evaluated through the In-Motes EYE application, aiming to test its merits under real time conditions. In-Motes EYE application which is an agent based real time In-Motes application developed for sensing acceleration variations in an environment. The application was tested in a prototype area, road alike, for a period of four months.

Making motes intelligent:an agent-based approach to wireless sensor networks

In-Motes is a mobile agent middleware that generates an intelligent framework for deploying applications in Wireless Sensor Networks (WSNs). In-Motes is based on the injection of mobile agents into the network that can migrate or clone following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception, cognition and control, forming the basis for its intelligence. Our middleware incorporates technologies such as Linda-like tuplespaces and federated system architecture in order to obtain a high degree of collaboration and coordination for the agent society. A set of behavioral rules inspired by a community of bacterial strains is also generated as the means for robustness of the WSN. In this paper, we present In-Motes and provide a detailed evaluation of its implementation for MICA2 motes.

In-Motes Bins:a real time application for environmental monitoring in wireless sensor networks

In-Motes Bins is an agent based real time In-Motes application developed for sensing light and temperature variations in an environment. In-Motes is a mobile agent middleware that facilitates the rapid deployment of adaptive applications in Wireless Sensor Networks (WSN's). In-Motes Bins is based on the injection of mobile agents into the WSN that can migrate or clone following specific rules and performing application specific tasks. Using In-Motes we were able to create and rapidly deploy our application on a WSN consisting of 10 MICA2 motes. Our application was tested in a wine store for a period of four months. In this paper we present the In-Motes Bins application and provide a detailed evaluation of its implementation. © 2007 IEEE.

JamLab: augmenting sensornet testbeds with realistic and controlled interference generation

Radio interference drastically affects the performance of sensor-net communications, leading to packet loss and reduced energy-efficiency. As an increasing number of wireless devices operates on the same ISM frequencies, there is a strong need for understanding and debugging the performance of existing sensornet protocols under interference. Doing so requires a low-cost flexible testbed infrastructure that allows the repeatable generation of a wide range of interference patterns. Unfortunately, to date, existing sensornet testbeds lack such capabilities, and do not permit to study easily the coexistence problems between devices sharing the same frequencies. This paper addresses the current lack of such an infrastructure by using off-the-shelf sensor motes to record and playback interference patterns as well as to generate customizable and repeat-able interference in real-time. We propose and develop JamLab: a low-cost infrastructure to augment existing sensornet testbeds with accurate interference generation while limiting the overhead to a simple upload of the appropriate software. We explain how we tackle the hardware limitations and get an accurate measurement and regeneration of interference, and we experimentally evaluate the accuracy of JamLab with respect to time, space, and intensity. We further use JamLab to characterize the impact of interference on sensornet MAC protocols.

Dar voz às vozes das crianças na construção da prática pedagógica

O presente artigo pretende apresentar a problemática que se destacou nas Práticas Profissionais Supervisionadas realizadas no decorrer do Mestrado em Educação Pré-Escolar (creche e de jardim de infância) no ano letivo 2012-2013. As duas práticas foram realizadas em contextos bastante distintos, sendo que esta diferença – com alguns pontos convergentes - foi um dos principais motes para nos apercebêssemos do aspeto educacional que nomeia este trabalho e sobre o qual iremos refletir, recorrendo às evidências que recolhemos ao longo do percurso educativo percorrido. Este texto abordará os aspetos em que nos baseámos durante o decorrer de todo o processo educativo, para construir a ação pedagógica: a concentração nas vozes das crianças e a forma como um Educador se deve posicionar para conseguir ouvir, efetivamente, os grupos com que trabalha.

Dimensioning and worst-case analysis of cluster-tree sensor networks

Modeling the fundamental performance limits of Wireless Sensor Networks (WSNs) is of paramount importance to understand their behavior under the worst-case conditions and to make the appropriate design choices. This is particular relevant for time-sensitive WSN applications, where the timing behavior of the network protocols (message transmission must respect deadlines) impacts on the correct operation of these applications. In that direction this paper contributes with a methodology based on Network Calculus, which enables quick and efficient worst-case dimensioning of static or even dynamically changing cluster-tree WSNs where the data sink can either be static or mobile. We propose closed-form recurrent expressions for computing the worst-case end-to-end delays, buffering and bandwidth requirements across any source-destination path in a cluster-tree WSN. We show how to apply our methodology to the case of IEEE 802.15.4/ZigBee cluster-tree WSNs. Finally, we demonstrate the validity and analyze the accuracy of our methodology through a comprehensive experimental study using commercially available technology, namely TelosB motes running TinyOS.