629,487 research outputs found

    The UN in the lab

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    We consider two alternatives to inaction for governments combating terrorism, which we term Defense and Prevention. Defense consists of investing in resources that reduce the impact of an attack, and generates a negative externality to other governments, making their countries a more attractive objective for terrorists. In contrast, Prevention, which consists of investing in resources that reduce the ability of the terrorist organization to mount an attack, creates a positive externality by reducing the overall threat of terrorism for all. This interaction is captured using a simple 3×3 “Nested Prisoner’s Dilemma” game, with a single Nash equilibrium where both countries choose Defense. Due to the structure of this interaction, countries can benefit from coordination of policy choices, and international institutions (such as the UN) can be utilized to facilitate coordination by implementing agreements to share the burden of Prevention. We introduce an institution that implements a burden-sharing policy for Prevention, and investigate experimentally whether subjects coordinate on a cooperative strategy more frequently under different levels of cost sharing. In all treatments, burden sharing leaves the Prisoner’s Dilemma structure and Nash equilibrium of the game unchanged. We compare three levels of burden sharing to a baseline in a between-subjects design, and find that burden sharing generates a non-linear effect on the choice of the efficient Prevention strategy and overall performance. Only an institution supporting a high level of mandatory burden sharing generates a significant improvement in the use of the Prevention strategy

    Can Corruption Be Studied in the Lab? Comparing a Field and a Lab Experiment

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    This paper makes an attempt at testing the external validity of corruption experiments by moving from the lab in a developed country, to where it matters the most, the field in a developing country. In our experiment a candidate proposes a bribe to a grader in order to obtain a better grade. We find the direction and the magnitude of most treatment effects to be statistically indistinguishable between the lab and the field. In particular, increasing the graders’.wage reduces in both environments the probability to accept the bribe. Finally, we identify several micro-determinants of corruption (age, religiousness, ability). Le prĂ©sent article essaie de tester la validitĂ© externe des expĂ©riences sur la corruption en quittant le laboratoire dans un pays dĂ©veloppĂ© pour le terrain dans un pays en dĂ©veloppement, oĂč la corruption importe encore plus. Dans notre expĂ©rience, un candidat offre un pot-de-vin Ă  un correcteur afin d’obtenir une meilleure note. Nous trouvons que la direction et la magnitude de la plupart des effets de traitement sont statistiquement indistinctibles entre le laboratoire et le terrain. En particulier, augmenter la rĂ©munĂ©ration des correcteurs rĂ©duit la probabilitĂ© d’accepter le pot-de-vin aussi bien en laboratoire que sur le terrain. Enfin, nous identifions plusieurs micro-dĂ©terminants de la corruption (Ăąge, religiositĂ©, habilitĂ©).corruption, experimental economics, field experiments., corruption, Ă©conomie expĂ©rimentale, expĂ©rience sur le terrain.

    Particularismes de la recherche technologique au profit des personnes présentant une maladie d'Alzheimer ou un syndrome apparenté

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    National audienceTechnological research for those suffering Alzheimer disease or related syndromes is different both from regular technological and medical research. We are studying both the user its tool as one only topic. The cognitive disease has an impact on the structure of the study as well as on how the user will interact with the tool. i.e.: it will modify the participation of the user (consent, difficulties to adapt, tiredness...), cause the irruption of the caregivers in the user’s way of life. This com-plex environment requires a multidimensional, multidisciplinary approach framed in a common research goal. The researchers must share an embedded ethical part in their research. The iterative user-centred approach, in our lab, develops in four steps: brain-storming, focus groups, living lab and true-life lab. L’approche itĂ©rative centrĂ©e utilisateur qui va, pour notre laboratoire, comporter quatre Ă©tapes, du plus amont au plus proche de la mise en service : brain-storming, focus groups, living lab puis true-life lab (« vie vraie »).Iterations may imply a compleat step down to the previous step or apply only to a partial hypothesis we could not verify. The true-life lab is a survey of the deployment of the tool in the prospect, uncontroled, use envi-ronment (as opoosed to a controled living lab environment); it will show acceptance and use issues as well as technical robustness. The true-life has four steps: election of the ecosystem, technical deployment, scenario based tests and assessed free use. Success of the true-life lab step will allow clinical trials with the tool.La recherche technologique au profit des personnes prĂ©sentant une maladie d’Alzheimer ou un syndrome apparentĂ© prĂ©sente des particularitĂ©s qui la distinguent tant de la recherche technologique que de la recherche mĂ©dicale classiques. Le sujet d’étude implique un couple outil, usager ; il doit donc prendre en compte les particularitĂ©s de la maladie neurodĂ©gĂ©nĂ©rative qui vont avoir une influence tant sur la structuration de l’étude que sur l’interaction entre l’homme et le dispositif. Ces particularitĂ©s sont les rĂ©percussions de la maladie elle-mĂȘme sur la participation de l’usager (capacitĂ© Ă  consentir, trouble de l’adaptation, fatigabilité ) mais Ă©galement l’intrusion des aidants dans son mode de vie. La prise en compte de cet environnement de recherche complexe implique une approche pluridimensionnelle et multidisciplinaire dans le cadre d’un objectif de recherche. Les acteurs partagent une rĂ©flexion Ă©thique continue intĂ©grĂ©e au projet. L’approche itĂ©rative centrĂ©e utilisateur va, pour notre laboratoire, comporter quatre Ă©tapes, du plus amont au plus proche de la mise en service : brain-storming, focus groups, living lab puis true-life lab (« vie vraie »). Lors des itĂ©rations, un retour complet ou ponctuel aux Ă©tapes prĂ©cĂ©dentes pourra ĂȘtre rĂ©alisĂ© devant des hypothĂšses qui ne se seront pas vĂ©rifiĂ©es. Le true-life lab est le dĂ©ploiement sous surveillance, dans des conditions d’usage et dans un environnement d’usage qui n’est pas contrĂŽlĂ© (par opposition au living lab) ; il permet de mettre en Ă©vidence des Ă©lĂ©ments d’acceptabilitĂ© et d’usage mais Ă©galement des aspects techniques de robustesse. Le true-life lab se dĂ©cline en quatre phases : choix de l’écosystĂšme de dĂ©ploiement, dĂ©ploiement technique, usage scĂ©narisĂ© et enfin usage libre Ă©valuĂ©. Le succĂšs du true-life lab permet le passage Ă  une Ă©valuation clinique

    Development of Starter Culture for the Improvement in the Quality of Ogiri, a Food Condiment

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    The objective of the present study was to isolate Lactic Acid Bacteria (LAB) from ogiri, a Nigerian fermented vegetable product, with the primary focus of selecting suitable isolates as candidates for starter cultures for use in possible improvements in the quality of the product. LAB was isolated from ogiri using phenotypic methods and then subjected to technological tests to evaluate its suitability as a starter culture. Based on their considerable technological properties, two isolates of LAB were selected as candidates for starter cultures. The starter cultures were inoculated at 103 CFU/g during the production of ogiri, while un-inoculated samples served as a control. The ogiri samples were stored for nine days, within which samples were taken for microbial and proximate analyses. Four LAB isolates were isolated and identified phenotypically from ogiri procured from a commercial market, including Lactobacillus acidophilus, Lactobacillus fermentum, Enterococcus sp. and Lactobacillus plantarum. The species of Lactobacillus displayed the usual cell shapes of rods when examined under the microscope, which is typical of most members of the genus. The cells of the Enterococcus sp. were, however, cocci in shape, and this is also typical of members of the genus. The basis of the identification of the LAB isolates was their ability to utilize a wide range of carbon sources in their physiological and biochemical activities. Among the LAB isolates, L. acidophilus, L. fermentum produced less than 0.35 and 0.024 mg/l of acetic acid and hydrogen peroxide, respectively, and were therefore chosen as starter cultures for the production of ogiri. Inoculated ogiri samples showed reduced counts of coliforms, yeast, and moulds in comparison with their un-inoculated counterparts during storage. Coliform counts increased beyond 105 CFU/g in the un-inoculated control samples, whereas counts were lower in samples inoculated with L. acidophilus and L. fermentum. Yeast and mould count of 8.1 106 CFU/g was recorded as the highest value in the un-inoculated control samples, but the count was generally below 106 CFU/g in the starter culture inoculated samples. Inoculation with LAB did not have significant difference (p > 0.05) in the proximate compositions of the fermented product. The LAB cultures L. acidophilus and L. fermentum demonstrated considerable control of coliforms and fungi in ogiri. Storage of the fermented product should not exceed 5 days for safety concerns, as an increase in counts of coliforms was recorded beyond this period. No significant difference (p > 0.05) was recorded in the proximate compositions of starter culture inoculated ogiriand un-inoculated samples. Doi: 10.28991/HIJ-2022-03-01-04 Full Text: PD

    A short curriculum of the robotics and technology of computer lab

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    Our research Lab is directed by Prof. Anton Civit. It is an interdisciplinary group of 23 researchers that carry out their teaching and researching labor at the Escuela PolitĂ©cnica Superior (Higher Polytechnic School) and the Escuela de IngenierĂ­a InformĂĄtica (Computer Engineering School). The main research fields are: a) Industrial and mobile Robotics, b) Neuro-inspired processing using electronic spikes, c) Embedded and real-time systems, d) Parallel and massive processing computer architecture, d) Information Technologies for rehabilitation, handicapped and elder people, e) Web accessibility and usability In this paper, the Lab history is presented and its main publications and research projects over the last few years are summarized.Nuestro grupo de investigaciĂłn estĂĄ liderado por el profesor Civit. Somos un grupo multidisciplinar de 23 investigadores que realizan su labor docente e investigadora en la Escuela PolitĂ©cnica Superior y en Escuela de IngenierĂ­a InformĂĄtica. Las principales lĂ­neas de investigaciones son: a) RobĂłtica industrial y mĂłvil. b) Procesamiento neuro-inspirado basado en pulsos electrĂłnicos. c) Sistemas empotrados y de tiempo real. d) Arquitecturas paralelas y de procesamiento masivo. e) TecnologĂ­a de la informaciĂłn aplicada a la discapacidad, rehabilitaciĂłn y a las personas mayores. f) Usabilidad y accesibilidad Web. En este artĂ­culo se reseña la historia del grupo y se resumen las principales publicaciones y proyectos que ha conseguido en los Ășltimos años

    Sustainable City: architecture, art and machine.

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    Abstract: The use of digital technology in architecture and art is associated often with the collaboration of interdisciplinary teams in participatory and experimental spaces, especially in the Media Lab model or its variants, such as the City Lab, Living Lab, the New Media Art and even the World Wide Lab. This is a model that combines the premises of the technological and innovation hand advanced users and whose clear precedents are, on the one hand, Russian Constructivism, and decades later the MIT hand Nicholas Negroponte. In the first case, in the Constructivism, there may be mentioned emblematic examples such as the Experimental Laboratory Building Kinetics of Proletkult in Moscow, Workshops Higher Education Arts and Techniques (VKHUTEMAS) founded in 1920, or the Group of Constructivists in Action the Institute of Artistic Culture (1921). The second case, the model Media Lab, Media Laboratory English acronym, translated as "Media Lab", originated in 1985 within the "Group of Architecture and Machines". The group has its immediate precedent in the draft Computer Aided Design (1959-1967), funded to maximize military power and whose director was Douglas T. Ross; it was addressing the man-machine complementary binding and design computationally, with a direct applicability of the technology. This model will be adopted by the architects of the Institute to raise new urban proposals based on component technology and social utopias. Also within the Media Lab, emerged in the late nineties, the term Living Lab hand WJ Mitchell and referred to urban planning using digital tools and with the involvement of the people themselves, albeit with different "degrees of citizen participation". This ever-closer union between man and machine is the direct consequence of the unstoppable digital revolution that is transforming the ways of city planning. Resumen: El uso de tecnologĂ­a digital en arquitectura y arte va asociado, con frecuencia, a la colaboraciĂłn de equipos interdisciplinares en espacios participativos y experimentales, especialmente en el modelo Media Lab o sus variantes, como el City Lab, el Living Lab, el New Media Art e incluso el World Wide Lab. Se trata de un modelo que aĂșna las premisas de lo tecnolĂłgico y la innovaciĂłn, de la mano de usuarios avanzados y cuyos precedentes claros son, por un lado, el Constructivismo ruso, y dĂ©cadas despuĂ©s el MIT de la mano de Nicholas Negroponte. En el primer caso, dentro del Constructivismo, pueden citarse ejemplos emblemĂĄticos como el Laboratorio Experimental de Construcciones CinĂ©ticas del Proletkult en MoscĂș, los Talleres de Enseñanza Superior de las Artes y las TĂ©cnicas (VKHUTEMAS) fundados en 1920, o el Grupo de Constructivistas en AcciĂłn del Instituto de Cultura ArtĂ­stica (1921). El segundo caso, el modelo Media Lab, acrĂłnimo del inglĂ©s Media Laboratory, traducido como “Laboratorio de medios de comunicaciĂłn”, tiene su origen en 1985 en el seno del “Grupo de Arquitectura y MĂĄquinas”. Dicho grupo tiene su precedente inmediato en el Proyecto de Diseño Asistido por Computador (1959-67), financiado para maximizar el poderĂ­o bĂ©lico y cuyo director fue Douglas T. Ross; se trataba de abordar la uniĂłn complementaria hombre-mĂĄquina y el diseño en tĂ©rminos computacionales, con una aplicabilidad directa de la tecnologĂ­a. Este modelo serĂĄ adoptado por los arquitectos del Instituto para plantear nuevas propuestas urbanas basadas en la componente tecnolĂłgica y en utopĂ­as sociales. TambiĂ©n en el seno del Media Lab, surge, a finales de los noventa, el tĂ©rmino Living Lab de la mano de W. J. Mitchell y referido a planificaciĂłn urbana mediante herramientas digitales y con la implicaciĂłn de los propios habitantes, si bien con diferentes “grados de participaciĂłn ciudadana”. Esta uniĂłn cada vez mĂĄs estrecha entre hombre y mĂĄquina es la consecuencia directa de la imparable revoluciĂłn digital que estĂĄ transformando los modos de planificaciĂłn de las ciudades.Universidad del PaĂ­s Vasco/Euskal Herriko Unibertsitatea

    Innovation spaces: transforming humanitarian practice in the United Nations

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    Presents new research on the objectives, motivations, and challenges of ‘innovation spaces’ in humanitarian and development work. Introduction The use of the term ‘lab’, more commonly seen in the physical and natural sciences, conjures a sense of a safe haven for experimentation, focused problem solving and solution creation. As laboratories for innovation have become part and parcel of innovation in the UN system, there is a pressing need to understand more about what these labs can truly offer and whether they should be isolated, instead of mainstreaming innovation into an agency. This research seeks to understand the way in which innovation labs across several UN agencies are being used to foster new ways of operating within the UN’s bureaucratic structures. Asks three key questions to help unpack how innovation labs are taking shape and to inform lessons for future labs about what works and what does not, in trying to achieve a culture of innovation and improved humanitarian solutions. These questions are: ‱ What form do innovation labs in UN agencies take? ‱ What motivated their initiation? What are their aims and objectives? ‱ What impact have they had and how is the impact being measured? &nbsp

    An educational virtual lab to study a mixed gearing of wheels

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    An educational Virtual Lab dealing with a mixed gearing of wheels has been created. Gears of wheels are common in Mechanical Engineering applications, like industrial machinery. This Virtual Lab is ideal when teaching and/or learning the relationship between geared wheels having three types of contact: tangent, coaxial, and by a belt. The virtual lab performs simulation based on the mathematical modeling of the gearing and allows the user to visualize the behavior of a mixed gearing of wheels and to get acquainted with the rotation speeds, number of turns and other parameters that appear when a set of wheels are gearedSe ha creado un Laboratorio Virtual educacional para estudiar un engranaje mixto de ruedas. Los engranajes de ruedas son comunes en aplicaciones de Ingeniería Mecånica, tal como la maquinaria industrial. Este software es ideal para la enseñanza y para el aprendizaje de las relaciones entre las ruedas de un engranaje, con tres tipos de contacto: tangencial, coaxial, y mediante una faja. El laboratorio virtual realiza simulación basada en el modelado matemåtico de un engranaje y permite al usuario visualizar el comportamiento de ruedas con engranajes mixtos y familiarizarse con las velocidades de rotación, numero de vueltas y otros paråmetros que aparecen cuando un conjunto de ruedas constituye un mecanismo

    Hacia un nuevo modelo de retail. El diseño integral como articulador

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    El present article estĂ  basat en el projecte The Future of Retail, realitzat per un equip d'alumnes del MĂ ster de Retail Design de l'ELISAVA, dirigit per Carmen Malvar, i Ubiquitous Computing Applications Lab, grup d'investigaciĂł de la UPF coordinat per Rafael Pous AndrĂ©s, i en investigacions independents posteriors de MercĂš Esteve, Natalia Alonso i Rut MartĂ­n. En ell s'identifiquen tendĂšncies i models de canvi del sector retail com a conseqĂŒĂšncia de la integraciĂł de la tecnologia a les nostres vides i dels canvis de valors de les noves generacions, en els Ă mbits social, econĂČmic i medioambiental.The present article is based on the project "The Future of Retail" developed by a group of students of the Retail Design Masters course at Elisava, directed by Carmen Malvar, and Ubiquitous Computing Applications Lab (UbiCA Lab) research group at Universitat Pompeu Fabra, coordinated by Rafael pous AndrĂ©s, and a subsequent independent research carried out by MercĂš Esteve, Natalia Alonso and Rut MartĂ­n. It reveals new retail business models and trends produced by the integration of technology in our lives and by the changes in values of new generations in the social, economic and environmental fields.El presente artĂ­culo se basa en el proyecto The Future of Retail, realizado por un equipo de alumnos del MĂĄster de Retail Design de ELISAVA, dirigido por Carmen Malvar, y Ubquitous Computing Applications Lab (UbiCA Lab), grupo de investigaciĂłn de la UPC coordinado por Rafael Pous AndrĂ©s, y en posteriores investigaciones independientes de MercĂš Esteve, Natalia Alonso i Rut MartĂ­n. En Ă©l se identifican tendencias y modelos de cambio del sector retail como consecuencia de la integraciĂłn de la tecnologĂ­a en nuestras vidas y de los cambios de valores de las nuevas generaciones, en los ĂĄmbitos social, econĂłmico y medioambiental
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