279 research outputs found

    Learning&Information Technologies Cartography

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    Nowadays, many researches focus their efforts in studies and applications on the Learning area. However, there is a lack of a reference system that permits to know the positioning and the existing links between Learning and Information Technologies. This paper proposes a Cartography where explains the relationships between the elements that compose the Learning Theories and Information Technologies, considering the own features of the learner and the Information Technologies Properties. This intersection will allow us to know what Information Technologies Properties promote Learning Futures

    Developing virtual heritage application with 3D collaborative virtual environments and mobile devices in a multi-cultural team: experiences and challenges

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    Until recently museums have been the sole repositories of an objective factual history. However, with the advent of online interactive media, there has been a shift to alternate forms of cultural exposition. This paper presents a project where 3D CVE is augmented with mobile devices in order to support a collaborative educational exploration of a famous historical site in Norway, where Battle of Stiklestad took place in 1030. This system can be used by both local and distant learning communities, working together towards a common goal. The paper presents a background for the project and describes the preliminary design. Finally, the paper discusses the challenges associated with developing educational augmented virtual heritage applications in a multicultural context

    Blind audio watermarking technique based on two dimensional cellular automata

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    In this paper we propose a new method of digital audio watermarking based on two dimensional cellular automata; the method increases the dimension of the audio and uses cellular automata in generating the key of watermark embedding. The watermarking method is blind, and does not require the original host audio or any of its features to extract the watermark; the watermark can be easily extracted using the right key. The experimental results show that the watermarks are imperceptible; and show a high similarity between the original and the watermarked audio. Cosine similarity and peak signal-to-noise ratio were used to measure the similarity between the original audio and the watermarked audio

    Vol. 39, no. 3: Full Issue

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    Eyes in the Sky: Decentralized Control for the Deployment of Robotic Camera Networks

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    This paper presents a decentralized control strategy for positioning and orienting multiple robotic cameras to collectively monitor an environment. The cameras may have various degrees of mobility from six degrees of freedom, to one degree of freedom. The control strategy is proven to locally minimize a novel metric representing information loss over the environment. It can accommodate groups of cameras with heterogeneous degrees of mobility (e.g., some that only translate and some that only rotate), and is adaptive to robotic cameras being added or deleted from the group, and to changing environmental conditions. The robotic cameras share information for their controllers over a wireless network using a specially designed multihop networking algorithm. The control strategy is demonstrated in repeated experiments with three flying quadrotor robots indoors, and with five flying quadrotor robots outdoors. Simulation results for more complex scenarios are also presented.United States. Army Research Office. Multidisciplinary University Research Initiative. Scalable (Grant number W911NF-05-1-0219)United States. Office of Naval Research. Multidisciplinary University Research Initiative. Smarts (Grant number N000140911051)National Science Foundation (U.S.). (Grant number EFRI-0735953)Lincoln LaboratoryBoeing CompanyUnited States. Dept. of the Air Force (Contract FA8721-05-C-0002

    Producing, branding and managing multifaceted tourist destinations: Cartagena, Colombia as a study case / Producció, brànding i gestió de destinacions turístiques polifacètiques: Cartagena d'Índies (Colòmbia) com a cas d'estudi.

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    La present tesi es proposa com a objectiu descobrir i analitzar alguns processos i dinàmiques que es troben a les destinations polifacètiques. Es cosideren dues grans àrees conceptuals: la producció de destinations i la gestió de destinacions. En concret, la destinació estudiada és Cartagena d’Índies, a la costa caribenya de Colòmbia, un lloc en el qual s’hi troba sol i platja i a més patrimoni contruït, la qual cosa la fa que sigui una ‘destinació polifacètica’. La metodologia que s’aplica és la de l’estudi de cas i el treball de camp va consistir en observació, treball d’arxiu, un qüestionari i finalment entrevistes semi-estructurades a actors ‘experts’ de la destinació. Els resultats mostren una destinació que va ser produïda de forma orgànica, tant els seus atractius patrimonials com el seu sol i platja. A això cal afegir-hi els processos top-down, que han produït brand disengagement així com notables desacords entre els actors. Per tant, Cartagena d’Índies és un lloc intrínsecament difícil de gestionar. El treball de camp descobreix aspectes de la gestió d’aquest lloc, que es deriven en recomanacions per als professionals, les quals figuren a la present tesi.La presente tesis se propone descubrir y analizar los procesos que se dan en destinos polifacéticos. Se toman en consideración dos grandes áreas conceptuales: la producción de destinos y el manejo de destinos. El caso concreto de estudio es la ciudad de Cartagena de Indias (Colombia) puesto que es considerada un ‘destino polifacético’. La metodología aplicada es el estudio de caso, y el trabajo de campo consistió en observación, trabajo de archivo, un cuestionario así como una serie de entrevistas semi-estructuradas a actores del destino. Se eligió una metodología cualitativa ya que esta permite obtener una visión profunda y detallada. Los resultados muestran un destino que fue producido de forma orgánica, tanto sus atractivos patrimoniales como los de sol y playa. A esto hay que añadirle los procesos top-down, los cuales han resultado en un brand disengagement y en desacuerdos entre actores. Por tanto, Cartagena de Indias es un lugar intrínsecamente difícil de gestionar. El trabajo de campo descubre aspectos del manejo de este lugar, los cuales derivan en recomendaciones para los profesionales.The present dissertation intends to unveil some of the dynamics and processes found in multifaceted destinations. Two broad conceptual areas are considered in order to conceptualize and analyse the issues found in such places: destination making and destination management. Specifically, the destination studied is Cartagena de Indias, on the Caribbean coast of Colombia, a place boasting sun and sand as well as built heritage, hence a ‘multifaceted destination’. The methodology applied is Case Research Theory and the field work consisted of observation, archival research, a questionnaire and semi-structured interviews with the ‘expert’ stakeholders in the destination. Qualitative methodologies were preferred as these allow for deep insights into dynamics and processes, The results show a destination that was produced in an organic way, both in terms of heritage as well as sun and sand. This was combined with hard elitist, top-down processes which resulted in brand disengagement and disagreements from the side of the stakeholders. Therefore, Cartagena de Indias is an intrinsically difficult place to manage

    American Square Dance Vol. 61, No. 4 (Apr. 2006)

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    Monthly square dance magazine that began publication in 1945

    Contesting the Future of the Campo Mexicano: Food Sovereignty and the Cultural Politics of Transgenic Corn

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    This dissertation analyzes the social-spatial knowledge practices that have emerged in the controversy over genetically modified (GM) transgenic corn in Mexico. This controversy is embedded within a broader struggle over the future of global food production and consumption, as the idea of agrobiotechnology as a techno-fix to global climate change and hunger increasingly takes over the popular imagination. The concept of food sovereignty, as developed within the Vía Campesina social movement, has emerged as a powerful discursive alternative on this terrain. Mexico is one of the most active sites of dispute over the future and meaning of maize and small-scale farming in North America. Through ethnographic and discursive engagement with the key social movement network that has emerged "in defense of maize" in Mexico, this dissertation analyzes the practices that have worked to generate autonomy and alternative geographies of territory and justice in the struggle over transgenic maize between the years 2009 and 2014. The complexity of intertwined cultural and biological processes that give rise to agrobiodiversity make studying the cultural politics of maize and the rearticulation of agrarian progress particularly relevant in maize's "center of origin." This project describes and analyzes three specific, concrete sets of world-making practices taking place at different sites of struggle against transgenic corn in Mexico: testing, mapping, and the international Permanent People's Tribunal. These practices emerged in moments of crisis--of contamination, of defining the centers of origin of maize, and of state impunity--framed within the larger discourse of crisis that sees rural Mexico as under "attack" by the Mexican government, starting with the neoliberal reforms of the 1980s. Each site of struggle has changed the terms of resistance through experimentation, specifically generating practices of autonomy and multiplicity.Doctor of Philosoph

    The BG News April 23, 2009

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    The BGSU campus student newspaper April 23, 2009. Volume 99 - Issue 141https://scholarworks.bgsu.edu/bg-news/9081/thumbnail.jp
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