3,621 research outputs found

    Context-aware adaptation in DySCAS

    Get PDF
    DySCAS is a dynamically self-configuring middleware for automotive control systems. The addition of autonomic, context-aware dynamic configuration to automotive control systems brings a potential for a wide range of benefits in terms of robustness, flexibility, upgrading etc. However, the automotive systems represent a particularly challenging domain for the deployment of autonomics concepts, having a combination of real-time performance constraints, severe resource limitations, safety-critical aspects and cost pressures. For these reasons current systems are statically configured. This paper describes the dynamic run-time configuration aspects of DySCAS and focuses on the extent to which context-aware adaptation has been achieved in DySCAS, and the ways in which the various design and implementation challenges are met

    Reviews

    Get PDF
    Europe In the Round CD‐ROM, Guildford, Vocational Technologies, 1994

    Natural Language Processing for Under-resourced Languages: Developing a Welsh Natural Language Toolkit

    Get PDF
    Language technology is becoming increasingly important across a variety of application domains which have become common place in large, well-resourced languages. However, there is a danger that small, under-resourced languages are being increasingly pushed to the technological margins. Under-resourced languages face significant challenges in delivering the underlying language resources necessary to support such applications. This paper describes the development of a natural language processing toolkit for an under-resourced language, Cymraeg (Welsh). Rather than creating the Welsh Natural Language Toolkit (WNLT) from scratch, the approach involved adapting and enhancing the language processing functionality provided for other languages within an existing framework and making use of external language resources where available. This paper begins by introducing the GATE NLP framework, which was used as the development platform for the WNLT. It then describes each of the core modules of the WNLT in turn, detailing the extensions and adaptations required for Welsh language processing. An evaluation of the WNLT is then reported. Following this, two demonstration applications are presented. The first is a simple text mining application that analyses wedding announcements. The second describes the development of a Twitter NLP application, which extends the core WNLT pipeline. As a relatively small-scale project, the WNLT makes use of existing external language resources where possible, rather than creating new resources. This approach of adaptation and reuse can provide a practical and achievable route to developing language resources for under-resourced languages

    A Server Consolidation Solution

    Get PDF
    Advances in server architecture has enabled corporations the ability to strategically redesign their data centers in order to realign the system infrastructure to business needs. The architectural design of physically and logically consolidating servers into fewer and smaller hardware platforms can reduce data center overhead costs, while adding quality of service. In order for the organization to take advantage of the architectural opportunity a server consolidation project was proposed that utilized blade technology coupled with the virtualization of servers. Physical consolidation reduced the data center facility requirements, while server virtualization reduced the number of required hardware platforms. With the constant threat of outsourcing, coupled with the explosive growth of the organization, the IT managers were challenged to provide increased system services and functionality to a larger user community, while maintaining the same head count. A means of reducing overhead costs associated with the in-house data center was to reduce the required facility and hardware resources. The reduction in the data center footprint required less real estate, electricity, fire suppression infrastructure, and HVAC utilities. In addition, since the numerous stand alone servers were consolidated onto a standard platform system administration became more agile to business opportunities.

    Multi Sentence Description of Complex Manipulation Action Videos

    Full text link
    Automatic video description requires the generation of natural language statements about the actions, events, and objects in the video. An important human trait, when we describe a video, is that we are able to do this with variable levels of detail. Different from this, existing approaches for automatic video descriptions are mostly focused on single sentence generation at a fixed level of detail. Instead, here we address video description of manipulation actions where different levels of detail are required for being able to convey information about the hierarchical structure of these actions relevant also for modern approaches of robot learning. We propose one hybrid statistical and one end-to-end framework to address this problem. The hybrid method needs much less data for training, because it models statistically uncertainties within the video clips, while in the end-to-end method, which is more data-heavy, we are directly connecting the visual encoder to the language decoder without any intermediate (statistical) processing step. Both frameworks use LSTM stacks to allow for different levels of description granularity and videos can be described by simple single-sentences or complex multiple-sentence descriptions. In addition, quantitative results demonstrate that these methods produce more realistic descriptions than other competing approaches

    Dynamic Network Notation: A Graphical Modeling Language to Support the Visualization and Management of Network Effects in Service Platforms

    Get PDF
    Service platforms have moved into the center of interest in both academic research and the IT industry due to their economic and technical impact. These multitenant platforms provide own or third party software as metered, on-demand services. Corresponding service offers exhibit network effects. The present work introduces a graphical modeling language to support service platform design with focus on the exploitation of these network effects

    Media Data Processing

    Get PDF
    Tato práce popisuje proces tvorby multi-platformního interaktivního systému a demonstruje jeho použitelnost na prototypu aplikace simulující rehabilitaci. Je zde zahrnut SW návrh, 3D programování a produkce animací za použití hloubkového senzoru Kinect. Jádro aplikace bylo vytvořeno v herním enginu Unity 3D a bylo otestováno na Linux Ubuntu, Windows 7, mobilním zařízení Android a Unity Web Playeru. První polovina tohoto dokumentu obsahuje můj průzkum nejmodernějších nástrojů a zdrojů vhodných pro realizaci interaktivní multi-platformní aplikace, pracující s 3D obsahem. Nejprve jsou popsány tři herní enginy (Unity 3D, UDK, Unreal Engine 4), jakožto hlavní vývojová prostředí vhodná k realizaci aplikace. Poté jsou popsány možnosti ukládání dat obecné pro všechny zmíněné enginy - integrovaná úložiště dat, databázové systémy a serializace. Nakonec jsou v práci popsány výhody a nevýhody různých přístupů, jak vytvořit 3D animace. Je zde naznačeno použití 3D softwaru určeného k manuální produkci, ale také různé možnosti snímání pohybu Motion Capture. Druhá část dokumentu popisuje mé zhodnocení informací popsaných v předchozí části a rozhodnutí, které prostředky jsem použil k vytvoření prototypu. Také je zde zkonkretizováno zadání a formulovány základní parametry aplikace. Dále je popsán SW návrh, produkce a zpracování 3D animací a samotná implementace. Nakonec je výsledný prototyp zhodnocen a naznačena rozšíření, které je možné aplikovat v budoucnosti. Co se týče využití samotné aplikace, tato práce předvádí mé nápady, jak mohou být informační technologie využity v oboru fyzioterapie a zdravotnictví obecně. Výsledkem nemělo být nahrazení fyzioterapeutů, nýbrž poskytnutí pomoci jim a jejich pacientům. Tento prototyp je příkladem, který nabízí 3D vizualizaci cvičení a lidského pohybového systému. 3D animace, ukazující, jak by měl být každý cvik správně proveden, mimo jiné, mohou učinit rehabilitace příjemnější a zároveň účinnější.This work describes a process of creating a cross-platform interactive system and it demonstrates usability on prototype application that simulates a rehabilitation session. The application includes 3D visualization possibilities - interactive human muscular system and exercises with 3D animations. The work included SW design, 3D programming and production of animations using Kinect sensor. The core of this prototype was created in Unity 3D game engine. It was deployed and tested on Linux Ubuntu, Windows 7, Android mobile device and Unity Web Player. This work as well manifests my ideas how Information Technology can be used in field of physical therapy.

    Analysis of an Experimental Space Debris Removal Mission

    Get PDF
    Encountering space debris is an ever-increasing problem in space exploration and exploitation, especially in Low Earth Orbit. While many space-faring governing bodies have attempted to control the orbital lifetime post mission completion of satellites and rocker bodies, objects already in orbit pose a danger to future mission planning. Currently, governments and academic institutions are working to develop missions to remove space debris; however, the proposed missions are typically costly primary missions. This research proposes an alternative to use an upper stage rocket, to be called a chaser, already launching a primary mission near the desired debris as a host for a removal mission. This research models the alternative system as an experimental test concept deploying a target from the Evolved Expendable Launch Vehicle Secondary Payload Adapter ring. A net and tether system is deployed towards the target to capture it, and at the opposite end of the tether is released a drag chute to deorbit the target. Once the capture method is proven with a cooperative body through experimentation, the target can then be an uncooperative piece of space debris of any size. The orbital life of a dead rocket body in an 800 km sun synchronous orbit can theoretically be reduced from approximately 500 years to less than a year using this method. This proposed concept is new in that it is planned as a secondary mission and the majority of the mission components will not separate from the Payload Adapter ring. This research’s initial model predictions show feasibility for this new concept
    corecore