278177 research outputs found
Sort by
ERAHE:Edge-offloaded Robust Attribute-Based Aggregate Scheme Enhanced with Homomorphic Encryption for 5G-Connected Delivery Drones
No full textUncrewed Aerial Vehicles (UAVs) are emerging as an integral part of delivering packages, food, and medicines for fast and efficient services. They rely on 5G networks offering high-speed, low-latency, and reliable connectivity for the exchange of mission-critical data. The 5G-connected drones remain vulnerable to cyber security attacks, including those impacting confidentiality, authentication, and integrity. In this paper, we present an edge-assisted data aggregation framework that reduces the drone's computation overhead and allow for secure data sharing between the drones and the Ground Control Station (GCS). The framework relies on a multi-level Attribute-Based Encryption (ABE) enhanced with an aggregate scheme using the Homomorphic Encryption (HE) properties. By integrating the property of HE with ABE, we ensure that only authorised entities can decrypt the encrypted messages under the threshold policy. To reduce the computation overhead at drones, we offload most computationally expensive operations in the encryption and decryption phases to an edge server.Our security analysis demonstrated that the proposed scheme guarantees confidentiality, access control, and key management security while resisting UAV-specific attacks such as eavesdropping, man-in-the-middle attacks and data injection. We validate the proposed scheme using a realistic testbed that includes a Holybro Pixhawk drone and Raspberry Pi. The experimental results demonstrate that the edge-assisted ERAHE framework effectively reduces cryptographic latency and computation burden on UAVs by partitioning expensive operations between the drone and the edge node. ERAHE achieves an optimal balance between cryptographic robustness and lightweight performance, making it well-suited for mission-critical applications
Improved prediction of symptomatic type 1 diabetes using a luciferase-based assay to measure (pro)insulin autoantibodies
No full textIntroduction: Insulin autoantibodies (IAA) are key predictors of type 1 diabetes, particularly in young children. Micro-radiobinding assays (RBA) are the gold-standard for IAA measurement but have limitations. We assessed whether a luciferase immunoprecipitation system (LIPS) assay improved diabetes risk assessment. Methods: To validate LIPS compared with RBA, samples from people with new-onset type 1 diabetes (n=150) and first-degree relatives (FDRs) (n=619), of whom 91 had developed diabetes during follow-up, were used. This cross-sectional observational data was analysed using area under the receiver operator characteristic curve and cox-proportional hazard models. Results: In new-onset diabetes, RBA and LIPS showed 88% agreement in IAA status. Positive IAA LIPS was more common in 89 FDRs with high-moderate affinity IAA (61%) compared with 22 FDRs with low-affinity IAA (18%) (p<0.001). In FDRs positive for multiple other islet autoantibodies, 20-year diabetes risk was 80% for those positive compared with 30% for those negative for IAA by LIPS (p=0.013). IAA LIPS added to diabetes risk independently of status/level of IAA by RBA, other autoantibodies, and sampling age (p<0.001). Conclusion: The IAA LIPS low-blood volume, high-throughput technique identifies more individuals with the highest risk of diabetes. The ability to identify high-affinity IAA makes LIPS an ideal method for future clinical trials and population screening strategies to predict risk of diabetes.<br/
Beyond Blunders:British Political Studies and Successful Public Policy
No full textBritish political studies has traditionally focused on the analysis of policy failures. This is reflected in a vast literature on catastrophes and crises which has uncovered a range of specific and systemic factors to explain failure. The central argument of this article is that this intense disciplinary negativity-bias risks creating an intellectual form of path dependency in which examples of successful public policy are rarely acknowledged, let alone studied. This matters because: the existence of an implicit but highly normative analytical lens may produce a skewed account of democratic performance in the United Kingdom; this may at some level feed into public debates in ways which reinforce public disillusionment and contribute to populist pressures; and the notion of looking ‘beyond blunders’ creates methodological questions which require the development of a new analytical toolkit and may pose new questions and opportunities for the social and political sciences. This article tests this ‘beyond blunders’ thesis by for the first time utilising the arguments and insights of the emergent field of ‘positive public policy’ in the context of British politics. Based on the available evidence and data a cautious and carefully framed case for the study of successful public policy is made
Empowering Voices:Digital Media and Women in Tech Leadership
No full textThis study examines how women in tech leadership use digital platforms to construct and communicate their narratives, challenge gender stereotypes, and promote more inclusive leadership models. Through a thematic content analysis of 200 digital artifacts—including social media posts, blogs, podcasts, and video content—this research identifies key themes such as empathy, collaboration, resilience, and authenticity in women’s self-representation. These traits challenge the hyper-masculine leadership norms that have historically dominated the technology sector and offer alternative paradigms aligned with feminist critiques of hierarchical power structures. The study integrates feminist media theory and empowerment theory to explore how digital platforms enable women to reclaim their leadership identities, foster community, and advocate for systemic change. Findings highlight the strategic use of storytelling, digital campaigns, and amplification of others’ voices as tools to resist patriarchal narratives and inspire societal shifts. Interesting findings, including the use of humour as a tool of resistance and vulnerability as a leadership strength, expand the literature on navigating gender bias in male-dominated industries. This research provides critical theoretical insights and practical implications, demonstrating the transformative potential of digital media for fostering individual and collective empowerment. It calls for tech companies to adopt inclusive leadership practices and amplifies the need for policies that support equity in the tech industry
Harmful Speech Online:Five Models of Platform Regulation
No full textHow, if at all, should governments be involved in prescribing content moderation policies for extreme speech on social media platforms? There are a range of regulatory models that may be adopted, on a spectrum from laissez-faire self-regulation to punitive state control. We propose a normative taxonomy of such schemes, that is, a classification based on how the different regulatory models bear upon the normative legitimacy of state (in)action in this area. We defend a certain kind of hybrid regulatory model (i.e., government working with platforms on regulatory policy), which is legislative, rather than informal or advisory, so as to ensure democratic input, transparency, accountability and redress (due process), but which imposes procedural requirements upon companies’ moderation policies and practices, rather than punitively prescribing moderation outcomes in specific case
An “Audiotopia”:Operatic Voices in St Petersburg, London, and Paris, 1843–53
No full textThe Italian tenors Giovanni Battista Rubini and Giovanni Matteo de Candia (a.k.a Mario) each enjoyed high-profile careers in Paris and London before being invited in the 1840s by the Russian emperor Nicholas I to sing with his new Italian opera company in St Peterburg. Inspired by Josh Kun’s notion of “audiotopia”—a potential utopia for listeners who experience music as part of an imaginative social-sonic world—this article considers the three cities as a single operatic space, taking Rubini and Mario as its guides. It first considers the sonic ideal of the Italian operatic voice shared by these different audiences, and then examines the dynamic relationship between them. The pull between St Peterburg and the Paris/London axis brings to the surface what was at stake for singers, theater directors, and audiences—and for the sound of Italian opera. The singers offer us paths through this social-sonic space, to reimagine its geographies
Internationalising Digital Commercial Laws
No full textIn this article, we explore the interaction between the disciplines of international trade law and international commercial law in facilitating the digitisation of cross-border commercial transactions. Despite various transnational initiatives to recognise digital trading at the international, supranational, European, or national level, most States recognise certain trade documents as legally valid only if they are in paper form. Drawing on recent commercial law reforms in the United Kingdom as a case study, we consider how domestic legal developments can have a catalysing effect in the modernisation of the legal frameworks governing cross-border commercial transactions worldwide. We conclude that international trade law strategies can play an important role in advancing domestic commercial law reforms of a private law nature, thereby facilitating digital trade
Genitive Constructions in Late Biblical Hebrew and the Septuagint
No full textWhat are the reasons for the oddities in LXX renderings of some Hebrew attributive genitives, specifically periphrastic genitive constructions (i.e. including particles)? This chapter explores the extent to which the Septuagint translators might have been alert to different forms of Hebrew attributive genitives and postclassical Greek case. A balanced investigation might explore whether some of the oddities of Septuagint renderings of Hebrew attributive genitive can be explained by issues of textual versions, style, context, imperfect acquisition of Greek, Postclassical Greek case syncretism, language development in Late Biblical Hebrew, or a combination of factors. In this essay, I focus on oddities of Greek case interchange in renderings of Hebrew attributive periphrastic and non-periphrastic genitive constructions. I consider these strange examples within the scope of language features in Late Biblical Hebrew and Postclassical Greek as found in the Septuagint