2,726 research outputs found

    Smart testing and critical care bed sharing for COVID-19 control

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    During the early months of the current COVID-19 pandemic, social-distancing measures effectively slowed disease transmission in many countries in Europe and Asia, but the same benefits have not been observed in some developing countries such as Brazil. In part, this is due to a failure to organise systematic testing campaigns at nationwide or even regional levels. To gain effective control of the pandemic, decision-makers in developing countries, particularly those with large populations, must overcome difficulties posed by an unequal distribution of wealth combined with low daily testing capacities. The economic infrastructure of the country, often concentrated in a few cities, forces workers to travel from commuter cities and rural areas, which induces strong nonlinear effects on disease transmission. In the present study, we develop a smart testing strategy to identify geographic regions where COVID-19 testing could most effectively be deployed to limit further disease transmission. The strategy uses readily available anonymised mobility and demographic data integrated with intensive care unit (ICU) occupancy data and city-specific social-distancing measures. Taking into account the heterogeneity of ICU bed occupancy in differing regions and the stages of disease evolution, we use a data-driven study of the Brazilian state of Sao Paulo as an example to show that smart testing strategies can rapidly limit transmission while reducing the need for social-distancing measures, thus returning life to a so-called new normal, even when testing capacity is limited

    Responsiveness of open innovation to COVID-19 pandemic: The case of data for good

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    Due to the COVID-19 pandemic, countries around the world are facing one of the most severe health and economic crises of recent history and human society is called to figure out effective responses. However, as current measures have not produced valuable solutions, a multidisciplinary and open approach, enabling collaborations across private and public organizations, is crucial to unleash successful contributions against the disease. Indeed, the COVID-19 represents a Grand Challenge to which joint forces and extension of disciplinary boundaries have been recognized as main imperatives. As a consequence, Open Innovation represents a promising solution to provide a fast recovery. In this paper we present a practical application of this approach, showing how knowledge sharing constitutes one of the main drivers to tackle pressing social needs. To demonstrate this, we propose a case study regarding a data sharing initiative promoted by Facebook, the Data For Good program. We leverage a large-scale dataset provided by Facebook to the research community to offer a representation of the evolution of the Italian mobility during the lockdown. We show that this repository allows to capture different patterns of movements on the territory with increasing levels of detail. We integrate this information with Open Data provided by the Lombardy region to illustrate how data sharing can also provide insights for private businesses and local authorities. Finally, we show how to interpret Data For Good initiatives in light of the Open Innovation Framework and discuss the barriers to adoption faced by public administrations regarding these practices

    From Network to Web dimension in supply chain management

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    Cette thĂšse soutient que la dimension rĂ©seau, Ă©tant actuellement la portĂ©e du domaine de la gestion de chaĂźne logistique, contraint l’avancement de ce domaine et restreint des innovations conceptuelles et fondamentales capables d’adresser les grands dĂ©fis Ă©conomiques, environnementaux et sociaux. Les concepts de chaĂźne et de rĂ©seau ne reflĂštent pas la complexitĂ© des flux physiques, informationnels et financiers gĂ©nĂ©rĂ©s par les interactions qui ont lieu dans des rĂ©seaux interconnectĂ©s. Ces concepts n’offrent pas les fondations thĂ©oriques pour supporter des interventions allant au-delĂ  d’un seul rĂ©seau et laissent Ă©chapper des opportunitĂ©s nĂ©cessitant une vision multi-rĂ©seau. Ainsi, la dimension “web”, celle des rĂ©seaux de rĂ©seaux, est proposĂ©e comme une extension de la dimension rĂ©seau. Cette extension peut ĂȘtre vue comme l’étape naturelle suivante dans la progression qui a commencĂ© par le niveau de gestion des opĂ©rations internes, est passĂ©e au niveau de la chaĂźne logistique et se trouve actuellement au niveau du rĂ©seau logistique. AprĂšs l’investigation thĂ©orique des raisons et de la façon d’intĂ©grer la dimension web dans le domaine de la gestion de la chaĂźne logistique, la thĂšse Ă©tudie des implications importantes de cette intĂ©gration sur la collaboration inter-organisationnelle et le processus de prise de dĂ©cision dans des environnements de webs logistiques. Elle dĂ©montre, en exploitant l’exemple des rĂ©seaux interconnectĂ©s ouverts, des potentialitĂ©s inimaginables sans une vision web. Une mĂ©thodologie de conception d’un modĂšle de simulation permettant l’évaluation et la comparaison des webs ouverts par rapport aux webs existants est proposĂ©e. Puisque l’aide Ă  la dĂ©cision est une composante importante de la gestion de la chaĂźne logistique, la thĂšse contribue Ă  dĂ©terminer les besoins des gestionnaires et Ă  identifier les lignes directrices de la conception des outils d’aide Ă  la dĂ©cision offrant le support adĂ©quat pour faire face aux dĂ©fis et Ă  la complexitĂ© des webs logistiques. Ces lignes directrices ont Ă©tĂ© compilĂ©es dans un cadre de conception des logiciels d’aide Ă  la dĂ©cision supportant la dimension web. Ce cadre est exploitĂ© pour dĂ©velopper quatre applications logicielles offrant aux praticiens et aux chercheurs des outils nĂ©cessaires pour Ă©tudier, analyser et dĂ©mĂȘler la complexitĂ© des webs logistiques.This thesis argues that the network dimension as the current scope of supply chain management is confining the evolution of this field and restricting the conceptual and fundamental innovations required for addressing the major challenges imposed by the evolution of markets and the increased intricacies of business relationships. The concepts of chain and network are limitative when attempting to represent the complexity of physical, informational and financial flows resulting from the interactions occurring in overlapping networks. They lack the theoretical foundations necessary to explain and encompass initiatives that go beyond a single chain or network. They also lead to overlook substantial opportunities that require beyond a network vision. Therefore, the “web” dimension, as networks of networks, is proposed as an extension to the network dimension in supply chain management. This new scope is the natural next step in the progression from the internal operations management level to the supply chain level and then to the supply network level. After a theoretical investigation of why and how the web dimension should be integrated into the supply chain management field, the thesis studies and discusses important implications of this integration on inter-organisational collaboration and of the decision-making processes in the logistic web environments. It demonstrates through the example of open interconnected logistic webs some of the potentials that cannot be imagined without a web vision. A methodology for designing a simulation model to assess the impact of such open webs versus existing webs is proposed. Since decision support is a key element in supply chain management, the thesis contributes to determine the needs of supply chain managers and identify the important axes for designing decision support systems that provide adequate assistance in dealing with the challenges and complexity presented by logistic web environments. The identified elements result in the establishment of a foundation for designing software solutions required to handle the challenges revealed by the web dimension. This conceptual framework is applied to the prototyping of four applications that have the potential of providing practitioners and researchers with the appropriate understanding and necessary tools to deal with the complexity of logistics webs

    Privacy in Mobile Agent Systems: Untraceability

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    Agent based Internet environments are an interesting alternative to existing approaches of building software systems. The enabling feature of agents is that they allow software development based on the abstraction (a "metaphor") of elements of the real world. In other words, they allow building software systems, which work as human societies, in which members share products and services, cooperate or compete with each other. Organisational, behavioural and functional models etc applied into the systems can be copied from the real world. The growing interest in agent technologies in the European Union was expressed through the foundation of the Coordination Action for Agent-Based Computing, funded under the European Commission's Sixth Framework Programme (FP6). The action, called AgentLink III is run by the Information Society Technologies (IST) programme. The long-term goal of AgentLink is to put Europe at the leading edge of international competitiveness in this increasingly important area. According to AgentLink "Roadmap for Agent Based Computing"; agent-based systems are perceived as "one of the most vibrant and important areas of research and development to have emerged in information technology in recent years, underpinning many aspects of broader information society technologies"; However, with the emergence of the new paradigm, came also new challenges. One of them is that agent environments, especially those which allow for mobility of agents, are much more difficult to protect from intruders than conventional systems. Agent environments still lack sufficient and effective solutions to assure their security. The problem which till now has not been addressed sufficiently in agent-based systems is privacy, and particularly the anonymity of agent users. Although anonymity was studied extensively for traditional message-based communication for which during the past twenty five years various techniques have been proposed, for agent systems this problem has never been directly addressed. The research presented in this report aimed at filling this gap. This report summarises results of studies aiming at the identification of threats to privacy in agent-based systems and the methods of their protection.JRC.G.6-Sensors, radar technologies and cybersecurit

    Advanced functionalities for the future Smart Secondary Substation

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    Team-level programming of drone sensor networks

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    Autonomous drones are a powerful new breed of mobile sensing platform that can greatly extend the capabilities of traditional sensing systems. Unfortunately, it is still non-trivial to coordinate multiple drones to perform a task collaboratively. We present a novel programming model called team-level programming that can express collaborative sensing tasks without exposing the complexity of managing multiple drones, such as concurrent programming, parallel execution, scaling, and failure recovering. We create the Voltron programming system to explore the concept of team-level programming in active sensing applications. Voltron offers programming constructs to create the illusion of a simple sequential execution model while still maximizing opportunities to dynamically re-task the drones as needed. We implement Voltron by targeting a popular aerial drone platform, and evaluate the resulting system using a combination of real deployments, user studies, and emulation. Our results indicate that Voltron enables simpler code and produces marginal overhead in terms of CPU, memory, and network utilization. In addition, it greatly facilitates implementing correct and complete collaborative drone applications, compared to existing drone programming systems
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