1,720,959 research outputs found
Communications préservant la confidentialité pour l'IoT basées sur le DNS et ses extensions de sécurité
No full textLes technologies de l'Internet des Objets (IoT) ont transformé notre manière d'interagir avec le monde et les machines, devenant une partie intégrante de notre quotidien. Cette thèse vise à relever certains des défis rencontrés dans les environnements IoT en utilisant le Domain Name System (DNS) ainsi que ses extensions et protocoles de sécurité. Bien que le DNS soit principalement un système de recherche distribué permettant de mapper les noms de domaine aux adresses IP, il a considérablement évolué grâce à diverses de ses extensions. Cette évolution lui a permis de jouer un rôle plus large, notamment en atténuant certains des défis liés aux environnements IoT.Notre première contribution identifie quatre grandes catégories de défis de l'IoT : la nature contrainte des dispositifs IoT, l'identification des objets de l'IoT, leur sécurité et interopérabilité. Nous effectuons également une revue de la littérature pour examiner comment le DNS est utilisé dans la recherche et l'industrie pour répondre à ces défis. La deuxième contribution propose l'utilisation du DNS-based Authentication of Named Entities (DANE), un protocole DNS conçu pour renforcer l'Infrastructure à Clé Publique (PKI), afin de mettre en place un mécanisme d'authentification mutuelle entre deux serveurs backend LoRaWAN, sécurisant la connexion sans dépendre des autorités de certification commerciales (CAs).La troisième contribution présente LoRaDANCE, un mécanisme de sécurité qui permet à un End-Device (ED) LoRaWAN de rejoindre un réseau sans avoir à pré-partager des clés secrètes avec les serveurs backend, comme requis dans le LoRaWAN standard. L'authentification mutuelle avec le Join Server (JS) est assurée par le protocole DANE, tandis que la cryptographie asymétrique permet au dispositif et au serveur de générer la clé secrète nécessaire, éliminant ainsi le besoin de clés pré-partagées.Pour notre quatrième contribution, nous avons mené une étude approfondie des noms de domaine IoT et évalué les différences entre ces derniers et les noms de domaine non-IoT. Dans ce contexte, les noms de domaine IoT font référence à ceux des serveurs backend IoT résolus via DNS, tandis que les noms de domaine non-IoT correspondent aux serveurs accessibles par des dispositifs génériques. L'étude a été réalisée en trois phases : une analyse statistique, une analyse DNS, et une classification des deux catégories de noms de domaine à l'aide de l'apprentissage automatique.The Internet of Things (IoT) technologies have transformed how we interact with the world and machines, becoming an integral part of our daily lives. This thesis aims to address some of the challenges faced by IoT environments using the Domain Name System (DNS) and its security extensions and protocols. While DNS is primarily a distributed lookup system that maps domain names to IP addresses, it has evolved significantly through various extensions and DNS-based protocols. This evolution has enabled DNS to play a broader role, particularly in mitigating some of the challenges in IoT environments. Our first contribution identifies four major categories of IoT challenges: the constrained nature of IoT devices, identification in IoT, IoT security, and interoperability. We also conduct a literature review to examine how DNS is used in both research and industry to address these challenges. The second contribution proposes using DNS-based Authentication of Named Entities (DANE), a DNS protocol designed to strengthen Public Key Infrastructure (PKI), to establish a mutual authentication mechanism between two LoRaWAN backend servers, securing the connection without relying on commercial Certificate Authorities (CAs). The third contribution, introduces LoRaDANCE, a security mechanism that allows a LoRaWAN ED to join a network without pre-sharing any secret keys with the backend servers, as required in standard LoRaWAN. Mutual authentication with the Join Server (JS) is ensured through DANE, while asymmetric cryptography enables the device and server to generate the necessary secret, eliminating the need for pre-shared keys. For our fourth contribution, we conducted an in-depth study of IoT domain names and evaluated the differences between them and non-IoT domain names. In this context, IoT domain names refer to those of IoT backend servers resolved via DNS, whereas non-IoT domain names correspond to servers accessed by generic devices and humans. The study was carried out in three phases: a statistical analysis, a DNS analysis, and a machine learning-based classification of the two domain name categories
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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