A framework for component certification in autonomic systems

  • Ciavaglia L.
  • Sander Spek
  • Vânia Gonçalves

While theory on software certification exists (e.g., see [1] for an overview), little of it has been applied to autonomic systems in the context of Network Management Systems. In this paper, a framework will be provided for component certification for autonomous networks. It has been applied in the UniverSelf Project, ...

An Approach for Call Logs Anonymization Using Machine Learning

  • Denoyer Ludovic
  • Gallinari Patrick
  • Maag M.

Today it is difficult and in most of the cases it is impossible for a data owner to release call logs in a completely safe environment without any risk of individuals re-identification. However, call logs analysis is very important for research purposes or for marketing applications. Moreover, since the arrival ...

A dimensional comparison between embedded 3D-printed and silicon microchannels

  • Jeffers N.
  • O'Connor J.
  • Punch J.
  • Stafford J.

The subject of this paper is the dimensional characterization of embedded mi- crochannel arrays created using contemporary 3D-printing fabrication techniques. Conven- tional microchannel arrays, fabricated using deep reactive ion etching techniques (DRIE) and wet-etching (KOH), are used as a benchmark for comparison. Rectangular and trapezoidal cross-sectional shapes were investigated. The ...

NNET: a Socket API and protocol stack for Process-to-Content Network Communication

  • Gallo M.
  • Lin Gu
  • Perino D.
  • Varvello M.

Inter-Process Communication (IPC) refers to the set of methods which enable data exchange among processes. When two processes are remote, or run on machines connected via a network, IPC is realized through the socket interface and the networking protocol stack implemented at end-hosts. Today, most computer networks rely on the ...

Investigation of Vapour Chamber Performance with a Concentrated Heat Source

  • Kempers R.
  • Ravache E.
  • Robinson A.
  • Siedel S.

This work aims to characterize the performance of a commercially available solid heat sink (SHS) and a vapour chamber heat sink (VCHS) with a small localized heat source. The heat sinks were tested under forced convection conditions in a dedicated wind tunnel. Heat transfer and temperature measurements facilitated the estimation ...

Development of a naturally aspirated thermosyphon for power amplifier cooling

  • Kempers R.
  • Kerslake S.
  • Robinson A.
  • Siedel S.

This paper details the early development steps of a two-phase thermosyphon thermal management solution for power amplifiers (PA) in the telecommunication industry. These components, attached to a vertical PCB within an enclosure between the RF filter and a natural or forced convection heat sink, dissipate a large amount of heat ...

On the Way to 5G

  • Zakrzewska A.

This presentation analyses new technologies that could enable 5G networking, discusses potential standardisation and development directions, and presents recent research efforts in the area of future mobile networks. This overview was prepared at the Technical University of Denmark (DTU) prior to joining Bell Labs.

Adaptive DC-DC Converter for Efficient 4G Macro-Cell Base Station

  • Ferling D.
  • Fernandéz Y.
  • Jueschke P.
  • Maugars P.
  • Nguyen Trieu Luan Le
  • Philippe D.
  • Retrouvey J.

Abstract—This article presents a new solution for DC-to-DC converters realized for 4G (LTE) macro cell base stations with improved efficiency. The concepts proposed in the EARTH project target a factor two reduction of power consumption in 4G base stations. The solutions are presented and detailed and required DC-to-DC converter specifications ...

NetCurator: Content Curation Made Passively

  • Ben Houidi Z.
  • Finamore A.
  • Mellia M.
  • Scavo G.
  • Teixeira R.
  • Traverso S.

The Internet today serves as a large content distribution platform. It carries a diversity of content types from traditional news, TV series, and movies to specialized blogs and family pictures shared over social networks. The recognition that the amount of information available online today overwhelms most users is giving rise ...

Experimental characterization of novel microdiffuser elements

  • Ehrlich L.
  • Jeffers N.
  • Punch J.
  • Stafford J.

Micropumps can play a significant role in thermal management applications, as a component of microfluidic cooling systems. For next-generation high density optical communication systems, in particular, heat flux levels are sufficiently high to require a microfluidic circuit for cooling. Valveless piezoelectrically-actuated micropumps are a particularly promising technology to be deployed ...

Benchmarking of a novel contactless characterisation method for micro thermoelectric modules

  • Hickey S.
  • Jeffers N.
  • Punch J.

Significant challenges exist in the thermal control of Photonics Integrated Circuits (PICs) for use in optical communications. Increasing component density coupled with greater functionality is leading to higher device-level heat fluxes, stretching the capabilities of conventional cooling methods using thermoelectric modules (TEMs). A tailored thermal control solution incorporating micro thermoelectric ...

Ethernet VPN for Next-Generation Services

  • Hankins G.
  • Rabadan J.

Ethernet VPN (EVPN) introduces a new model for Ethernet services delivery. With EVPN, service providers can meet evolving demands for higher speeds, sophisticated QoS and guaranteed SLAs. EVPN can support the requirements driven by new applications in a way that existing technologies can’t.

Calculating & Composing Elementary Risks: Novel Decision Support System for Cyber Defence

  • Dubus S.
  • Kanoun W.
  • Papillon S.

Since we started to rely more than ever on Information and Communications Technologies (ICT) in every aspect of modern life, we witness an accelerating growth in volume and complexity of drastic cyber attacks. In this cyber realm, where new vulnerabilities are daily discovered, organizations strive to manage risks dynamically & ...

Passive content curation based on HTTP logs

  • Ben Houidi Z.
  • Finamore A.
  • Mellia M.
  • Scavo G.
  • Teixeira R.
  • Traverso S.

Content curation refers to assisting users to identify relevant and interesting content in the overwhelming amount of online content available today. Existing content curation services rely either on experts or on the wisdom of the crowds to promote content. This paper designs HotNet, a passive, crowdsource-based content curation system. HotNet ...

5GNOW: Intermediate Transceiver and Frame Structure Concepts and Results

  • Chen Y.
  • Dryjanski M.
  • Gaspar I.
  • Kasparick M.
  • Ktenas D.
  • Michailow N.
  • Piertrcyk S.
  • Schaich F.
  • Wild T.
  • Wunder G.

This paper provides intermediate transceiver and frame structure concepts and corresponding results for the European FP7 research project 5GNOW. The Unified Frame Structure concept is presented which supports an integrated 5G air interface, capable of dealing both with broadband data services and small packet services within the same band. Waveforms ...

High fidelity phase locked PIV measurements analysing the flow fields surrounding an oscillating piezoelectric fan

  • Donnelly B.
  • Jeffers N.
  • Nolan K.
  • Stafford J.

Piezoelectric fans have been studied extensively and are seen as a promising technology for thermal management due to their ability to provide quiet, reliable cooling with low power consumption. The fluid mechanics of an unconfined piezoelectric fan are complex which is why the majority of the literature to date confines ...

Towards the METIS 5G concept

  • Bulakci Ömer
  • Fertl Peter
  • Gozalvez-Serrano David
  • Höglund Andreas
  • Li Zexian
  • Mange G.
  • Pawlak Krystian
  • Popovski Petar
  • Tullberg Hugo

METIS is developing a 5G system concept that meets the requirements of the beyond-2020 connected information society and supports new usage scenarios. To meet the objectives METIS uses Horizontal Topics (HT) that addresses a key new challenge, identifies necessary new functionalities and proposes HT-specific concepts. This paper presents an initial ...

CHARACTERIZATION OF VALVELESS PIEZOELECTRICALLY- ACTUATED MICROPUMPS WITH NOVEL DIFFUSER ELEMENTS

  • Ehrlich L.
  • Jeffers N.
  • Punch J.
  • Stafford J.

Micropumps can play a significant role in thermal management applications, as a component of microfluidic cooling systems. For next-generation high density Photonics Integrated Circuits (PICs), in particular, heat flux levels are sufficiently high to require a microfluidic circuit for cooling. Valveless piezoelectrically- actuated micropumps are a particularly promising technology to ...

THE DESIGN & CHARACTERIZATION OF A MINIATURE SHAPE MEMORY ALLOY VALVE FOR PASSIVE THERMAL MANAGEMENT

  • Jeffers N.
  • Punch J.
  • Stafford J.
  • Waddell A.

Photonics Integrated Circuits (PICs) are being deployed by the telecommunications industry as transceivers for fibre optic networks. The core component of a typical PIC is the laser-array and the power density of these devices (102 W/cm2 ) now demands novel thermal management architectures including developments such as near-source liquid cooling. ...

HEAT TRANSFER AND FLUID MECHANICS FROM A PIEZOELECTRIC FAN OPERATING IN ITS SECOND RESONANT FREQUENCY MODE

  • Donnelly B.
  • Jeffers N.
  • Stafford J.

Piezoelectric fans are receiving increased interest for thermal management applications because of their reliability, minimal power consumption, and noise-free operation. These features are of particular interest to companies who have strict reliability constraints and have reached the thermal limit of conventionally used natural convection heat sinks. For a classical piezoelectric ...