4,742 research outputs found

    Poor Man's Content Centric Networking (with TCP)

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    A number of different architectures have been proposed in support of data-oriented or information-centric networking. Besides a similar visions, they share the need for designing a new networking architecture. We present an incrementally deployable approach to content-centric networking based upon TCP. Content-aware senders cooperate with probabilistically operating routers for scalable content delivery (to unmodified clients), effectively supporting opportunistic caching for time-shifted access as well as de-facto synchronous multicast delivery. Our approach is application protocol-independent and provides support beyond HTTP caching or managed CDNs. We present our protocol design along with a Linux-based implementation and some initial feasibility checks

    Quality of Service and Associated Communication Infrastructure for Electric Vehicles †

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    Transportation electrification is pivotal for achieving energy security and emission reduction goals. Electric vehicles (EVs) are at the forefront of this transition, driving the development of new EV technologies and infrastructure. As this trend gains momentum, it becomes essential to enhance the quality of service (QoS) of EVs to encourage their widespread adoption. This paper has been structured with two primary aims to effectively address the above timely technological needs. Firstly, it comprehensively reviews the various QoS factors that influence EVs’ performance and the user experience. Delving into these factors provides valuable insights into how the QoS can be improved, thereby fostering the increased use of EVs on our roads. In addition to the QoS, this paper also explores recent advancements in communication technologies vital for facilitating in-formation exchanges between EVs and charging stations. Efficient communication systems are crucial for optimizing EV operations and enhancing user experiences. This paper presents expert-level technical details in an easily understandable manner, making it a valuable resource for researchers dedicated to improving the QoS of EV communication systems, who are tirelessly working towards a cleaner, more efficient future in transportation. It consolidates the current knowledge in the field and presents the latest discoveries and developments, offering practical insights for enhancing the QoS in electric transportation. A QoS parameter reference map, a detailed classification of QoS parameters, and a classification of EV communication technology references are some of the key contributions of this review paper. In doing so, this paper contributes to the broader objectives of promoting transportation electrification, enhancing energy security, and reducing emissions

    Scaling up physical activity interventions worldwide: stepping up to larger and smarter approaches to get people moving.

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    The global pandemic of physical inactivity requires a multisectoral, multidisciplinary public-health response. Scaling up interventions that are capable of increasing levels of physical activity in populations across the varying cultural, geographic, social, and economic contexts worldwide is challenging, but feasible. In this paper, we review the factors that could help to achieve this. We use a mixed-methods approach to comprehensively examine these factors, drawing on the best available evidence from both evidence-to-practice and practice-to-evidence methods. Policies to support active living across society are needed, particularly outside the health-care sector, as demonstrated by some of the successful examples of scale up identified in this paper. Researchers, research funders, and practitioners and policymakers in culture, education, health, leisure, planning, and transport, and civil society as a whole, all have a role. We should embrace the challenge of taking action to a higher level, aligning physical activity and health objectives with broader social, environmental, and sustainable development goals.The Brazilian National Council for Scientific and Technological Development CNPA (Grant ID: 308979/2014-1)This is the author accepted manuscript. The final version is available from Elsevier via http://dx.doi.org/10.1016/S0140-6736(16)30728-

    TDOT 25-Year Long-Range Transportation Policy Plan, Safety, Security, and Transportation Reslience Policy Paper

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    https://digitalcommons.memphis.edu/govpubs-tn-dept-transportation-25-year-transportation-policy/1003/thumbnail.jp

    Inclusiveness of Public Space: Experimental Approaches for the Revitalisation of Smaller Historic Urban Centres

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    Abstract: In recent decades, many small Italian historic centers—particularly those situated inland—have witnessed a population decline due to inadequate access to public services and facilities. However, this depopulation has also allowed many centers to retain their distinctive features, now conferring upon them great cultural–historical and landscape value. New quality-of-life-centered economic models present the development of accessible public services as a necessity. Such a process could catalyze the recovery and growth of these centers, which continue to be deserted, regardless of their value. This paper considers combined solutions, including sustainable mobility, digital accessibility, networked services, and technological devices by applying them to trans-scalar studies with the goal of achieving sustainable outcomes. Some of the proposed solutions are the resolution of irregular ground levels, the use of electric vehicles, the creation of sharing models, the physical overhaul of routes, and the retrofitting of minor buildings for inclusive use in a comprehensive human-centered approach toward regeneration. This study is in line with the European guidelines for sustainable and intelligent mobility, whose goal is for at least one hundred European cities to become accessible to all and shifted to zero-emission mobility. Here, sustainable and smart mobility is understood not only as an improvement of environmental and social conditions, but also as a catalyst for environmental and social improvements and as an opportunity to enhance the livability of smaller, geographically isolated historic centers, moving toward a new economy of urban reclamation

    Thinking, Talking and Acting about Public Health Ethics in the COVID-19 Pandemic

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    During the COVID-19 pandemic, the discipline of public ethics has struggled to find a consensus on how best to conceptualise the challenges. The transactional nature of clinical ethics is too limited to capture the range of ethically relevant concerns. Although public health ethics is broader, it fails to provide a convincing framework for the deeply political implications of the response to the pandemic. They go beyond health issues and raise questions of justice. We consider the demands of fairness for all, corrective justice for past structural wrongs, and utopian approaches that draw on our ideas about the ideal society. The lack of an agreed framework for ethical analysis is exacerbated by dwindling faith in expertise and a degradation of trust in media sources to present reliable, accurate information. These matters have undermined the quality of public reason. Although both the USA and UK had well-established anticipatory governance for pandemic influenza, it was not followed when COVID-19 took hold. The pandemic has exposed the weaknesses of our collective thinking, our readiness to discuss the issues rationally and effectively, and our ability to act effectively in the public good. Rebuilding effective public ethics in its wake will present a monumental challenge

    Knowledge Co-production in Contested Spaces: An Evaluation of the North Slope Borough – Shell Baseline Studies Program

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    Supporting the development of trusted and usable science remains a key challenge in contested spaces. This paper evaluates a collaborative research agreement between the North Slope Borough of Alaska and Shell Exploration and Production Company—an agreement that was designed to improve collection of information and management of issues associated with the potential impacts of oil and gas development in the Arctic. The evaluation is based on six categories of knowledge co-production indicators: external factors, inputs, processes, outputs, outcomes, and impacts. Two sources of data were used to assess the indicators: interviews with steering committee members and external science managers (n = 16) and a review of steering committee minutes. Interpretation of the output and outcome indicators suggests that the Baseline Studies Program supported a broad range of research, though there were differences in how groups perceived the relevance and legitimacy of project outcomes. Several input, process, and external variables enabled the co-production of trusted science in an emergent boundary organization and contested space; these variables included governance arrangements, leveraged capacities, and the inclusion of traditional knowledge. Challenges to knowledge co-production on the North Slope include logistics, differences in cultures and decision contexts, and balancing trade-offs among perceived credibility, legitimacy, and relevance. Reinforced lessons learned included providing time to foster trust, developing adaptive governance approaches, and building capacity among scientists to translate community concerns into research questions.La nĂ©cessitĂ© d’appuyer la production de donnĂ©es scientifiques fiables et utilisables demeure un dĂ©fi important dans les espaces contestĂ©s. Le prĂ©sent article Ă©value une entente de collaboration de recherche entre la municipalitĂ© de North Slope, en Alaska, et la Shell Exploration and Production Company, entente destinĂ©e Ă  amĂ©liorer la collecte de renseignements et la gestion des enjeux liĂ©s aux incidences Ă©ventuelles de l’exploitation pĂ©troliĂšre et gaziĂšre dans l’Arctique. L’évaluation est fondĂ©e sur six catĂ©gories d’indicateurs de coproduction des connaissances : facteurs externes, intrants, processus, extrants, rĂ©sultats et incidences. Deux sources de donnĂ©es ont Ă©tĂ© employĂ©es pour Ă©valuer les indicateurs : des entrevues avec les membres du comitĂ© directeur et des gestionnaires scientifiques externes (n = 16), et l’examen des procĂšs-verbaux du comitĂ© directeur. L’interprĂ©tation des indicateurs d’extrants et de rĂ©sultats suggĂšre que le programme d’études de base a appuyĂ© un large Ă©ventail de recherches, mais qu’il y avait des diffĂ©rences dans la façon dont les groupes percevaient la pertinence et la lĂ©gitimitĂ© des rĂ©sultats du projet. Plusieurs variables d’intrants, de processus et de facteurs externes ont permis la coproduction de donnĂ©es scientifiques fiables dans une organisation frontaliĂšre Ă©mergente et un espace contestĂ©. Ces variables comprenaient les mĂ©canismes de gouvernance, les capacitĂ©s utilisĂ©es et l’inclusion des connaissances traditionnelles. Parmi les dĂ©fis propres Ă  la coproduction de connaissances Ă  North Slope, notons des dĂ©fis de logistique, de diffĂ©rences sur les plans de la culture et des contextes dĂ©cisionnels, ainsi que l’équilibre des compromis entre les perceptions en matiĂšre de crĂ©dibilitĂ©, de lĂ©gitimitĂ© et de pertinence. Quant aux leçons apprises, notons la nĂ©cessitĂ© d’accorder du temps pour favoriser la confiance, d’élaborer des mĂ©thodes de gouvernance adaptatives et de renforcer les capacitĂ©s chez les scientifiques pour traduire les prĂ©occupations communautaires en questions de recherche

    An Independent Review of USGS Circular 1370: An Evaluation of the Science Needs to Inform Decisions on Outer Continental Shelf Energy Development in the Chukchi and Beaufort Seas, Alaska

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    Reviews the U.S. Geological Survey's findings and recommendations on Alaska's Arctic Ocean, including geology, ecology and subsistence, effect of climate change on, and impact of oil spills. Makes recommendations for data management and other issues

    Do We Need Help Using Yelp? Regulating Advertising on Mediated Reputation Systems

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    Yelp, Angie’s List, Avvo, and similar entities enable consumers to access an incredibly useful trove of information about peer experiences with businesses and their goods and services. These “mediated reputation systems,” gatherers and disseminators of consumer peer opinions, are more trusted by consumers than traditional commercial channels. They are omnipresent, carried everywhere on mobile devices, and used by consumers ready to transact. Though this information is valuable, a troubling conflict emerges in its presentation. Most of these reputation platforms rely heavily on advertising sales to support their business models. This reliance compels these entities to display persuasive advertising right along with their presentation of authentic peer information. Consumers expecting to access this authentic peer information must also confront a persuasive message. The revenue lifeblood for these platforms comes from the very businesses under peer review. This Article argues that the power of peer information provides an exceptionally credible context for persuasive advertising. Accordingly, advertising on reputation platforms should trigger more rigorous regulation in the form of disclosure requirements and prioritized enforcement

    The Role of Transportation in Campus Emergency Planning, MTI Report 08-06

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    In 2005, Hurricane Katrina created the greatest natural disaster in American history. The states of Louisiana, Mississippi and Alabama sustained significant damage, including 31 colleges and universities. Other institutions of higher education, most notably Louisiana State University (LSU), became resources to the disaster area. This is just one of the many examples of disaster impacts on institutions of higher education. The Federal Department of Homeland Security, under Homeland Security Presidential Directive–5, requires all public agencies that want to receive federal preparedness assistance to comply with the National Incident Management System (NIMS), which includes the creation of an Emergency Operations Plan (EOP). Universities, which may be victims or resources during disasters, must write NIMS–compliant emergency plans. While most university emergency plans address public safety and logistics management, few adequately address the transportation aspects of disaster response and recovery. This MTI report describes the value of integrating transportation infrastructure into the campus emergency plan, including planning for helicopter operations. It offers a list of materials that can be used to educate and inform campus leadership on campus emergency impacts, including books about the Katrina response by LSU and Tulane Hospital, contained in the report®s bibliography. It provides a complete set of Emergency Operations Plan checklists and organization charts updated to acknowledge lessons learned from Katrina, 9/11 and other wide–scale emergencies. Campus emergency planners can quickly update their existing emergency management documents by integrating selected annexes and elements, or create new NIMS–compliant plans by adapting the complete set of annexes to their university®s structures
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