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See detailPower and Load Optimization in Interference-Coupled Non-Orthogonal Multiple Access Networks
Lei, Lei UL; You, Lei; Yang, Yang UL et al

in IEEE Global Communications Conference (GLOBECOM) 2018 (2018, December)

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See detailCollaborative Data Delivery for Smart City-oriented Mobile Crowdsensing Systems
Vitello, Piergiorgio UL; Capponi, Andrea UL; Fiandrino, Claudio UL et al

in IEEE Global Communications Conference (GLOBECOM), Abu Dhabi, UAE, 2018 (2018, December)

The huge increase of population living in cities calls for a sustainable urban development. Mobile crowdsensing (MCS) leverages participation of active citizens to improve performance of existing sensing ... [more ▼]

The huge increase of population living in cities calls for a sustainable urban development. Mobile crowdsensing (MCS) leverages participation of active citizens to improve performance of existing sensing infrastructures. In typical MCS systems, sensing tasks are allocated and reported on individual-basis. In this paper, we investigate on collaboration among users for data delivery as it brings a number of benefits for both users and sensing campaign organizers and leads to better coordination and use of resources. By taking advantage from proximity, users can employ device-to-device (D2D) communications like Wi-Fi Direct that are more energy efficient than 3G/4G technology. In such scenario, once a group is set, one of its member is elected to be the owner and perform data forwarding to the collector. The efficiency of forming groups and electing suitable owners defines the efficiency of the whole collaborative-based system. This paper proposes three policies optimized for MCS that are compliant with current Android implementation of Wi-Fi Direct. The evaluation results, obtained using CrowdSenSim simulator, demonstrate that collaborative-based approaches outperform significantly individual-based approaches. [less ▲]

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See detailL’efficacité du retour dans les États membres de l’UE: défis et bonnes pratiques dans l’application des règles européennes en matière de retour
Petry, David UL; Sommarribas, Adolfo UL; Coda, Nicolas UL et al

Article for general public (2018)

Le retour des ressortissants de pays tiers en séjour irrégulier est l‘un des principaux piliers de la politique de l‘UE en matière de migration et d‘asile. Dans son plan d‘action sur le retour en 2015 et ... [more ▼]

Le retour des ressortissants de pays tiers en séjour irrégulier est l‘un des principaux piliers de la politique de l‘UE en matière de migration et d‘asile. Dans son plan d‘action sur le retour en 2015 et dans sa communication de 2017 relative à une politique de retour plus efficace et la recommandation qui l‘a accompagnée, la Commission a souligné la nécessité d‘une mise en œuvre plus stricte des règles européennes en la matière. Cette note de synthèse présente les principaux résultats de l’étude réalisée en 2017 par le point de contact de l´European Migration Network au Luxembourg intitulée «L’efficacité du retour dans les Etats membres de l’UE: défis et bonnes pratiques dans l’application des règles européennes en matière de retour» ainsi que du rapport synthétique qui en résulte. L’étude se base sur les informations recueillies jusqu’au mois de juillet 2017. Cette note de synthèse vise à analyser l‘impact des règles européennes sur le retour ainsi que sur les politiques et pratiques mises en œuvre dans les différents États membres. Elle présente également la manière dont les normes et procédures européennes ont été interprétées et appliquées au niveau national et, dans la mesure du possible, leur impact sur l‘efficacité du dispositif de retour. Toutefois, une certaine prudence s’impose tant il est difficile d‘établir des liens de causalité entre des mesures politiques spécifiques et le nombre de retours mis en œuvre. [less ▲]

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See detailVirtuaalsed agendid minevikku ennustamas
Sikk, Kaarel UL

Article for general public (2018)

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See detailQualitätskonstruktionen - Zur Verarbeitung divergierender Qualitätsanforderungen in der Jugendarbeit
Biewers, Sandra UL

Book published by Beltz Juventa (2018)

Formale Verfahren zur Sicherung von Qualität in sozialpädagogischen Organisationen stehen meist in einem engen Zusammenhang mit Fragen der Wirtschaftlichkeit. Ob sie auch in der pädagogischen Praxis ... [more ▼]

Formale Verfahren zur Sicherung von Qualität in sozialpädagogischen Organisationen stehen meist in einem engen Zusammenhang mit Fragen der Wirtschaftlichkeit. Ob sie auch in der pädagogischen Praxis nutzbringend zur Anwendung kommen und aus ihnen auch fachliche Innovationen hervorgehen, steht aber häufig in Zweifel. Das vorliegende Buch befasst sich mit dieser Frage aus der Perspektive der sozialpädagogischen Praxis. Vorgestellt wird eine empirische Studie, die mit Rekurs auf neoinstitutionalistische Theoriekonzepte untersucht, anhand welcher Strategien Fachkräfte in der Offenen Jugendarbeit die meist von staatlicher Seite definierten Qualitätskriterien und -regeln in ihrem Praxisalltag aufgreifen und ob bzw. inwiefern sie diese nach professionellen Anforderungen reinterpretieren und transformieren [less ▲]

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See detailInteroperability of EU Databases and Access to Personal Data by National Police Authorities under Article 20 of the Commission Proposals
Quintel, Teresa Alegra UL

in European Data Protection Law Review (2018), 4/2018(4), 470-482

This contribution assesses data protection concerns relating to the processing of personal data carried out pursuant to Article 20 of the interoperability proposals, which were published by the European ... [more ▼]

This contribution assesses data protection concerns relating to the processing of personal data carried out pursuant to Article 20 of the interoperability proposals, which were published by the European Commission on 12 December 2017. The proposals seek to enable all centralised EU databases for security, border and migration management to be interconnected by 2023. Under Article 20 of the proposals, Member States would be permitted to implement national provisions that allow national police authorities to query one of the interoperability components with biometric taken during an identity check. Such queries shall prevent irregular migration and ensure a high level of security within Union. In particular, this article seeks to examine the data protection concerns arising with regard to streamlined law enforcement access to non-law enforcement databases included in the interoperable framework, and addresses risks for individuals to become subject to unfair processing under Article 20 of the interoperability proposal. [less ▲]

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See detailLe temps long des réseaux sociaux numériques
Clavert, Frédéric UL; Grandjean, Martin; Méadel, Cécile

in Le temps des médias. Revue d'histoire (2018)

Depuis leur émergence au milieu des années 2000, les réseaux sociaux numériques favorisent et provoquent une accélération de la circulation des informations, les transformant en médias à part entière ... [more ▼]

Depuis leur émergence au milieu des années 2000, les réseaux sociaux numériques favorisent et provoquent une accélération de la circulation des informations, les transformant en médias à part entière. Leurs moyens et leur infrastructure techniques autorisent leurs membres à participer non seulement à la diffusion mais également à la création et à la mise en forme de ces informations. Si la (relative) nouveauté des technologies et infrastructures utilisées par les réseaux sociaux numériques est bien documentée, celle des pratiques des utilisateurs/acteurs de ces services dans les modes d’émergence et de circulation de l’information l’est moins. Ce dossier du Temps des médias souhaite mettre au centre de sa démarche une série de questionnements touchant à l’interaction entre (nouvelles) technologies, rythmes ou formats de l’information et (nouveaux) acteurs. Si le cas des réseaux sociaux numériques est considéré comme emblématique de nouveaux modèles de production et de circulation des informations, ce dossier s’appuie sur des approches diachroniques qui permettent ainsi de réintroduire une pluralité de temporalités dans l’étude des réseaux sociaux numériques. [less ▲]

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See detailStrategic conversations under imperfect information: Epistemic Message Exchange games
Asher, Nicholas; Paul, Soumya UL

in Journal of Logic, Language and Information (2018), 27(4), 343-385

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See detailSuccessive convex approximation algorithms for sparse signal estimation with nonconvex regularizations
Yang, Yang UL; Pesavento, Marius; Chatzinotas, Symeon UL et al

in IEEE Journal of Selected Topics in Signal Processing (2018), 12(6), 1286-1302

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See detailKnowledge Graph-based Core Concept Identification in Learning Resources
Manrique, Rubén; Grevisse, Christian UL; Mariño, Olga et al

in 8th Joint International Conference, JIST 2018, Awaji, Japan, November 26–28, 2018, Proceedings (2018, December)

The automatic identification of core concepts addressed by a learning resource is an important task in favor of organizing content for educational purposes and for the next generation of learner support ... [more ▼]

The automatic identification of core concepts addressed by a learning resource is an important task in favor of organizing content for educational purposes and for the next generation of learner support systems. We present a set of strategies for core concept identification on the basis of a semantic representation built using the open and available knowledge in the so-called Knowledge Graphs (KGs). Different unsupervised weighting strategies, as well as a supervised method that operates on the semantic representation, were implemented for core concept identification. In order to test the effectiveness of the proposed strategies, a human-expert annotated dataset of 96 learning resources extracted from MOOCs was built. In our experiments, we show the capacity of the semantic representation for the core-concept identification task as well as the superiority of the supervised method. [less ▲]

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See detailHydroxycoumarin OT-55 kills CML cells alone or in synergy with imatinib or Synribo: Involvement of ER stress and DAMP release
Mazumder, A; Lee, JY; Talhi, O et al

in Cancer Letters (2018)

We synthetized and investigated the anti-leukemic potential of the novel cytostatic bis(4-hydroxycoumarin) derivative OT-55 which complied with the Lipinski's rule of 5 and induced differential toxicity ... [more ▼]

We synthetized and investigated the anti-leukemic potential of the novel cytostatic bis(4-hydroxycoumarin) derivative OT-55 which complied with the Lipinski's rule of 5 and induced differential toxicity in various chronic myeloid leukemia (CML) cell models. OT-55 triggered ER stress leading to canonical, caspase-dependent apoptosis and release of danger associated molecular patterns. Consequently, OT-55 promoted phagocytosis of OT-55-treated CML cells by both murine and human monocyte-derived macrophages. Moreover, OT-55 inhibited tumor necrosis factor α-induced activation of nuclear factor-кB and produced synergistic effects when used in combination with imatinib to inhibit colony formation in vitro and Bcr-Abl+ patient blast xenograft growth in zebrafish. Furthermore, OT-55 synergized with omacetaxine in imatinib-resistant KBM-5 R cells to inhibit the expression of Mcl-1, triggering apoptosis. In imatinib-resistant K562 R cells, OT-55 triggered necrosis and blocked tumor formation in zebrafish in combination with omacetaxine. [less ▲]

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See detailGenotype-phenotype relations for the Parkinson’s disease genes SNCA, LRRK2, VPS35: MDSGene Review.
Trinh, Joanne; Zeldenrust, Florentine M. J.; Huang, Jana et al

in Movement Disorders (2018), 33(12), 1857-1870

This comprehensive MDSGene review is devoted to the three autosomal-dominant PD forms: PARK-SNCA, PARK-LRRK2, and PARK-VPS35. It follows MDSGene's standardized data extraction protocol, screened a total ... [more ▼]

This comprehensive MDSGene review is devoted to the three autosomal-dominant PD forms: PARK-SNCA, PARK-LRRK2, and PARK-VPS35. It follows MDSGene's standardized data extraction protocol, screened a total of 2,972 citations, and is based on fully curated phenotypic and genotypic data on 937 patients with dominantly inherited PD attributed to 44 different mutations in SNCA, LRRK2, or VPS35. All of these data are also available in an easily searchable online database (www.mdsgene.org), which additionally provides descriptive summary statistics on phenotypic and genetic data. Despite the high degree of missingness of phenotypic features and unsystematic reporting of genotype data in the original literature, the present review recapitulates many of the previously described findings including later onset of disease (median age at onset: ∼49 years) compared to recessive forms of PD of an overall excellent treatment response. Our systematic review validates previous reports showing that SNCA mutation carriers have a younger age at onset compared to LRRK2 and VPS35 (P < 0.001). SNCA mutation carriers often have additional psychiatric symptoms, and although not exclusive to only LRRK2 or VPS35 mutation carriers, LRRK2 mutation carriers have a typical form of PD, and, lastly, VPS35 mutation carriers have good response to l-dopa. [less ▲]

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See detailQoS-Constrained Sum-Harvested Energy Maximization in OFDMA-based Wireless Cooperative Networks
Gautam, Sumit UL; Lagunas, Eva UL; Vuppala, Satyanarayana UL et al

Scientific Conference (2018, December)

We investigate the performances of the time-switching (TS) and power-splitting (PS) based energy harvesting models in a two-hop relay assisted network where the end-users are capable of decoding ... [more ▼]

We investigate the performances of the time-switching (TS) and power-splitting (PS) based energy harvesting models in a two-hop relay assisted network where the end-users are capable of decoding information and harvesting energy concurrently. In particular, we consider joint resource allocation and relay selection to realize Simultaneous Wireless Transmission of Information and Energy (Wi-TIE) in a multi-carrier multi-user cooperative system where the relays employ the amplify-and-forward (AF) protocol. First, we formulate based on the TS and PS Wi-TIE architectures an optimization problem to maximize the sum of energy harvested at the end-users, taking into consideration each user's quality-of-service (QoS) requirement as well as power constraints at the transmit and relaying nodes. We then solve the formulated problem to optimize the users' Wi-TIE splitting factors along with relay-user coupling, sub-carrier-user assignment, sub-carrier pairing, and power allocation. Finally, we demonstrate the benefits of the proposed framework via numerical results. [less ▲]

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See detailClosed-Form Solution for Computationally Efficient Symbol-Level Precoding
Krivochiza, Jevgenij UL; Merlano Duncan, Juan Carlos UL; Andrenacci, Stefano UL et al

Scientific Conference (2018, December)

We present a convex optimization based Symbol-Level Precoding (SLP) for sum power minimization and propose the low-latency closed-form algorithm to find a heuristic solution to the optimization problem ... [more ▼]

We present a convex optimization based Symbol-Level Precoding (SLP) for sum power minimization and propose the low-latency closed-form algorithm to find a heuristic solution to the optimization problem. The technique exploits constructive interference at the multi-user MIMO systems and minimizes the sum power of the transmitted precoded signal per each symbol slot. As a result, the received signals gain extra Signal-to-Noise Ratio (SNR), which leads to the improved data rate and energy efficiency. We benchmark the low-complexity algorithm for solving the optimization technique against the conventional Fast Non-Negative Least Squares algorithm (NNLS). The demonstrated design of the SLP technique combined with the proposed closed-form algorithm has low computational complexity and fast processing time, which is applicable in low-latency high-throughput satellite communication systems. [less ▲]

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See detailLes réseaux sociaux numériques d’avant …
Schafer, Valerie UL

in Le temps des Médias (2018), 31

CBBS, The Well, Fidonet, Geocities, DDS, Calvacom, the Minitel are some of the « virtual communities » and spaces, where, from the 1970s to the 1990s, the early adopters of computer-mediated ... [more ▼]

CBBS, The Well, Fidonet, Geocities, DDS, Calvacom, the Minitel are some of the « virtual communities » and spaces, where, from the 1970s to the 1990s, the early adopters of computer-mediated communications built digital social networks, which did not yet bear this name. They challenge our definition of social networks, invite us to consider the continuities and disruptions between these past experiences and those of today, but also the traces left by these communities, to better consider the future of our born-digital heritage. [less ▲]

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See detailWeb History in Context
Schafer, Valerie UL; Thierry, Benjamin

in Brügger, Niels; Milligan, Ian (Eds.) The SAGE Handbook of Web History FIRST EDITION (2018)

The presence now of the Web in every area of life demands studies which constitute it simultaneously both as itself a contextualising object and as anchored in a context. Contextualising because today it ... [more ▼]

The presence now of the Web in every area of life demands studies which constitute it simultaneously both as itself a contextualising object and as anchored in a context. Contextualising because today it directly influences an infinite number of objects, which can no longer be studied without taking account of their echoes online. In transmedia dynamics in particular, we can see how the Web is increasingly becoming an ever-present backdrop to controversies, to the configuration of information and even to interpersonal relationships. Equally, the Web must find its own contextualisation, first of all – since we are historians – from a diachronic perspective. The first challenge is not to remain within the limits set by the technology itself. This twofold approach (the Web in context and the Web as context) suggests how focused we need to be on the construction of an ever-changing socio-technical reality – a return to a totalising, process-focused history which takes account of ongoing developments. We should resist the effects of any discourse tending to fix realities or establish, in hieratic or metonymic fashion, an image of ‘THE’ Web. The present analysis falls into three main sections, which interrogate, in turn, the diachronic or temporal contextualisation, the boundaries or spatial contextualisation, and finally collective and individual experiences of the Web. [less ▲]

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See detailEn construction. La fabrique française d'Internet et du Web dans les années 1990
Schafer, Valerie UL

Book published by INA Editions (2018)

Cet ouvrage s’inscrit dans le cadre d’une histoire jeune et très contemporaine, celle d’Internet, du Web et des cultures numériques et explore leur fabrique dans les années 1990 en France. Cette recherche ... [more ▼]

Cet ouvrage s’inscrit dans le cadre d’une histoire jeune et très contemporaine, celle d’Internet, du Web et des cultures numériques et explore leur fabrique dans les années 1990 en France. Cette recherche, à la croisée de l’histoire des médias, de l’histoire de l’innovation, et de l’histoire sociale et culturelle, reflète les apports d’une approche française de l’histoire d’Internet et du Web. Matérialité et infrastructures, temporalités et trajectoires, espaces et territoires traversent les cinq chapitres du livre. Ils apportent des arguments au choix d’une analyse nationale d’un phénomène pourtant transnational, en s’intéressant à l’attribution des noms de domaine et à la francophonie au sein de la Toile, à la transition entre la culture Minitel et celle du Web, ou encore à la place d’un État qui passe du volontarisme et du monopole des télécommunications à la dérégulation et aux imaginaires des autoroutes puis de la société de l’information. Explorant les pratiques, difficultés, tâtonnements de la période et le tournant grand public du Web, on croise au cours de cette navigation des informaticiens, des entrepreneurs, des politiques, des passionnés de science-fiction, des militants, autant d’acteurs qui se confrontent, débattent, co-construisent. Ils vous invitent à les suivre dans un chantier entre « cathédrale et bazar », pour reprendre Eric Raymond, dont l’exotisme mais aussi l’actualité des débats ne cessent de nous frapper. Bienvenue dans le Cyberespace des années 1990 ! [less ▲]

Detailed reference viewed: 64 (8 UL)