92 research outputs found

    Muscle synergies after stroke are correlated with perilesional high gamma.

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    Movements can be factored into modules termed "muscle synergies". After stroke, abnormal synergies are linked to impaired movements; however, their neural basis is not understood. In a single subject, we examined how electrocorticography signals from the perilesional cortex were associated with synergies. The measured synergies contained a mix of both normal and abnormal patterns and were remarkably similar to those described in past work. Interestingly, we found that both normal and abnormal synergies were correlated with perilesional high gamma. Given the link between high gamma and cortical spiking, our results suggest that perilesional spiking may organize synergies after stroke

    Security in Cloud Computing Based on Third Party Auditor: A Survey

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    This Paper surveys security in cloud computing based on Third Party Auditor (TPA) also known as Trusted Third Party (TTP). There are various security models for safeguarding the client’s data in cloud. TPA provides secure connections between the user and the cloud server. Cloud Service Provider (CSP) Provides the clients with cloud storage and service. TPA has access to the client’s cloud data and all the critical information. There are many security models for making the TPA more reliable so the clients can trust the third party for storing their data. In this paper, we survey mostly the types of security models based on Third Party Auditing in cloud. We also discuss how these security models enable the third parties to gain the clients trust. The classification has been based on the adopted security method as well as on the kind of threats they are addressing

    Lightweight Accountable Privacy-Preserving Protocol Allowing the Cloud Client to Audit the Third-Party Auditor for Malicious Activities

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    Cloud computing is reserving its position in the market as the next disruptive utility paradigm. It is found on the pay-as-you-use model. Cloud computing is changing the way information technology (IT) operates for individuals as well as for companies. Cloud computing comes with different offerings to accommodate diverse applications. It comes with many successful adoption stories and a few unfortunate ones that are related to security breaches. Security concerns are what is making many companies reluctant to fully embrace the cloud realm. To enhance trust and entice adoption between cloud clients (CC) and cloud service providers (CSP), a new paradigm of depending on involving a third-party auditor (TPA) has been introduced. Hence, implementing a solution with a TPA comes with its toll in terms of trust and processing overhead. A lightweight security protocol to give the CC extra control with tools to audit the TPA and the CSP is paramount to the solution. In this paper, we are introducing a novel protocol: the lightweight accountable privacy-preserving (LAPP) protocol. Our proposed protocol is lightweight in terms of processing and communication costs. It is based on a newly introduced mathematical model along with two algorithms. We have conducted simulation experiments to measure the impact of our method. We have compared LAPP to the most eminent privacy-preserving methods in the cloud research field, using the open source cloud computing simulator GreenCloud. Our simulation results showed superiority in performance for LAPP in regard to time complexity, accuracy, and computation time on auditing. The aim of the time complexity and computation time on auditing simulations is to measure the lightweight aspect of our proposed protocol as well as to improve the quality of service.http://dx.doi.org/10.3390/app915303

    Light-weight Accountable Privacy Preserving (LAPP) Protocol Allowing to Audit the Third-Party Auditor in the Cloud Environment

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    Cloud computing is situating its position in the market as the next disruptive utility paradigm based on the pay as you use model. It is changing the way information technology (IT) operates from individuals and companies’ perspectives. Cloud computing comes with different offerings to accommodate diverse applications. Security concerns are what’s making many companies reluctant from fully embracing the cloud realm. To enhance trust and entice adoption between cloud clients (CC) and cloud service providers (CSP), cloud computing based on a third-party auditor (TPA) has been introduced. Hence introducing a solution with a TPA, comes with its toll in terms of trust and processing overhead. A light-weight security protocol to give the CC an extra control with tools to audit the TPA and the CSP is paramount to the solution. In this paper, we are introducing a novel protocol: Light-weight Accountable Privacy Preserving (LAPP) Protocol. Our proposed protocol is based on a novel mathematical model along with three algorithms. We have conducted simulation experiments to measure the impact of our method, compared to the most eminent privacy preserving methods, using the GreenCloud simulator. Our results showed superiority in performance for LAPP concerning time complexity, accuracy, and computation time on auditing

    ‘Working with the media taught us a lot’: Understanding The Guardian’s Katine initiative

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    One of the more important ventures in the world of media and development over the past decade has been The Guardian newspaper’s ‘Katine’ project in Uganda. The newspaper, with funding from its readers and Barclays Bank, put more than 2.5 million pounds into a Ugandan sub-county over the course of 4 years. The project was profiled on a dedicated Guardian microsite, with regular updates in the printed edition of the newspaper. In this article, I look at the relationship that developed between journalists and the non-governmental organisation and show that the experience was both disorienting and reorienting for the development project that was being implemented. The scrutiny of the project that appeared on the microsite disoriented the non-governmental organisation, making its work the subject of public criticism. The particular issues explored by journalists also reoriented what the non-governmental organisation did on the ground. I also point to the ways the relationship grew more settled as the project moved along, suggesting the amount of work that sometimes goes into what is often characterised as the relatively uncritical relationship between journalists and non-governmental organisations

    Conditions in prerelease movie trailers for stimulating positive word of mouth:A conceptual model demonstrates the importance of understanding as a factor for engagement

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    Filmmakers increasingly depend on trailers as advertising and to generate word of mouth (WOM). This study investigates the extent to which trailers influence WOM in the prerelease context by testing a conceptual model separately on the three most popular movie genres. When viewers perceive greater understanding of the movie from the trailer, the prospect of liking it is significantly increased. This leads to a substantial increase in viewers’ intent to generate WOM and, ultimately, their willingness to pay to see the movie. These novel findings lead to practical implications for studios hoping to stimulate consumer interest, with wider contributions to advertising theory

    Looking Good: Mediatisation and International NGOs

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    Many international NGOs value those parts of their work that are suited to media representation: campaigning, advocacy, projects that produce the right sort of images. In this article I make three points about this change. First, those parts of the NGO most reliant on media – such as the campaign desk – may be becoming more powerful. This can change the internal dynamics of NGOs. Second, the increasing use of media means that NGOs, like other organisations, hold themselves accountable in new ways. Third, NGOs may appear to look more and more like media organisations. These changes have received relatively little attention in the literature on NGOs, though they reflect a broader set of debates about the role of media in society. Using a case analysis of an international NGO, I suggest that the concept of mediatisation might be a useful way to understand some of the changes observed in the NGO sector
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