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Published: 1 April 2023

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1

Bergem, Mark J. "Real-time speaker detection for user-device binding." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5041.

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This thesis explores the accuracy and utility of a framework for recognizing a speaker by his or her voice called the Modular Audio Recognition Framework (MARF). Accuracy was tested with respect to the MIT Mobile Speaker corpus along three axes: 1) number of training sets per speaker, 2) testing sample length and 3) environmental noise. Testing showed that the number of training samples per speaker had little impact on performance. It was also shown that MARF was successful using testing samples as short as 1000ms. Finally, testing discovered that MARF had difficulty with testing samples containing significant environmental noise. An application of MARF, namely a referentially-transparent calling service, is described. Use of this service is considered for both military and civilian applications, specifically for use by a Marine platoon or a disaster-response team. Limitations of the service and how it might benefit from advances in hardware are outlined.
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2

Hunt, Andrew David. "Radical user-interfaces for real-time musical control." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313958.

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3

Zepf, Sebastian [Verfasser]. "Real-Time Emotion-Sensitive User Interfaces / Sebastian Zepf." Ulm : Universität Ulm, 2021. http://d-nb.info/1238147690/34.

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4

Elshahali, Mai Hassan Ahmed Ali. "Real-Time Processing and Visualization of 3D Time-Variant Datasets." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/56582.

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Scientific visualization is primarily concerned with the visual presentation of three-dimensional phenomena in domains like medicine, meteorology, astrophysics, etc. The emphasis in scientific visualization research has been on the efficient rendering of measured or simulated data points, surfaces, volumes, and a time component to convey the dynamic nature of the studied phenomena. With the explosive growth in the size of the data, interactive visualization of scientific data becomes a real challenge. In recent years, the graphics community has witnessed tremendous improvements in the performance capabilities of graphics processing units (GPUs), and advances in GPU-accelerated rendering have enabled data exploration at interactive rates. Nevertheless, the majority of techniques rely on the assumption that a true three-dimensional geometric model capturing physical phenomena of interest, is available and ready for visualization. Unfortunately, this assumption does not hold true in many scientific domains, in which measurements are obtained from a given scanning modality at sparsely located intervals in both space and time. This calls for the fusion of data collected from multiple sources in order to fill the gaps and tell the story behind the data. For years, data fusion has relied on machine learning techniques to combine data from multiple modalities, reconstruct missing information, and track features of interest through time. However, these techniques fall short in solving the problem for datasets with large spatio-temporal gaps. This realization has led researchers in the data fusion domain to acknowledge the importance of human-in-the-loop methods where human expertise plays a major role in data reconstruction. This PhD research focuses on developing visualization and interaction techniques aimed at addressing some of the challenges that experts are faced with when analyzing the spatio-temporal behavior of physical phenomena. Given a number of datasets obtained from different measurement modalities and from simulation, we propose a generalized framework that can guide research in the field of multi-sensor data fusion and visualization. We advocate the use of GPU parallelism in our developed techniques in order to emphasize interaction as a key component in the successful exploration and analysis of multi-sourced data sets. The goal is to allow the user to create a mental model that captures their understanding of the spatio-temporal behavior of features of interest; one which they can test against real data measurements to verify their model. This model creation and verification is an iterative process in which the user interacts with the visualization, explores and builds an understanding of what occurred in the data, then tests this understanding against real-world measurements and improves it. We developed a system as a reference implementation of the proposed framework. Reconstructed data is rendered in a way that completes the users' cognitive model, which encodes their understanding of the phenomena in question with a high degree of accuracy. We tested the usability of the system and evaluated its support for this cognitive model construction process. Once an acceptable model is constructed, it is fed back to the system in the form of a reference dataset, which our framework uses to guide the real-time tracking of measurement data. Our results show that interactive exploration tasks enable the construction of this cognitive model and reference set, and that real-time interaction is achievable during the exploration, reconstruction, and enhancement of multi-modal time-variant three-dimensional data, by designing and implementing advanced GPU-based visualization techniques.
Ph. D.
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5

Halvorsen, Espen Herseth. "Real-Time End-User Service Composition Using Google Wave." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for telematikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11126.

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This thesis explores Wave, a brand new communication and collaboration platform, from the perspective of end user service composition. A description of the different frameworks that are available and a study of how these can be used to create components that can be easily integrated with the platform are provided. Several examples of how the platform can be used to simplify different use cases involving multiple users collaborating on a common goal are provided. A complete solution to collaboratively organize meetings is also developed using these tools, and a detailed explanation of how one creates the necessary Wave Gadgets using web technologies like HTML, CSS and JavaScript, and the necessary back-end Wave Robots using Java are provided.
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6

Minhas, Harvinder S. "Investigation of real-time multi-user application development frameworks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62255.pdf.

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7

Williamson, Gale. "USER PROGRAMMABLE REAL-TIME PROCESSING IN MODERN TELEMETRY SYSTEMS." International Foundation for Telemetering, 1985. http://hdl.handle.net/10150/615738.

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International Telemetering Conference Proceedings / October 28-31, 1985 / Riviera Hotel, Las Vegas, Nevada
This paper describes a method for providing user programmability to telemetry ground stations. It describes the inadequacies of a traditional computer and proposes the use of a data flow architecture to meet real-time processing requirements. The general characteristics of data flow architectures are discussed along with the reasons why telemetry processing is a natural problem class to be solved using data flow techniques. Finally, the practical application of a Loral DATAFLO™ telemetry system is presented.
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8

Allen, Patricia Mary. "A state-based user interface for real-time ADA systems." Thesis, University of Bradford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304077.

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9

Lu, Jiajun. "Sharing semi-heterogeneous single-user editors for real-time group editing." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3881.

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A new approach is proposed to transparently share familiar single-user editors without modifying their source code. This approach tweaks a classic diff algorithm to derive edit scripts between document states. Concurrent edit scripts are merged to synchronize states of coauthoring sites. Our concept-proving prototype currently works with familiar, heterogeneous text editors such as GVim and WinEdt that can be adapted to support two basic interfaces, GetState and SetState. The adaption is less expensive and more robust than recent approaches such as ICT and CoWord, which must understand and translate editing operations at the operating system level. Experimental data show that our approach is able to provide sufficient performance for near-realtime group editing.
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10

Roberts, David J. "A predictive real time architecture for multi-user, distributed, virtual reality." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318140.

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11

Corre, Kevin. "User controlled trust and security level of Web real-time communications." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S029/document.

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Dans cette thèse, je propose trois contributions principales : dans notre première contribution, nous étudions l'architecture d'identité WebRTC et plus particulièrement son intégration aux algorithmes de délégation d'authentification existants. Cette intégration n'a pas encore été étudiée jusqu'à présent. Dans cette perspective, nous implémentons les composants de l'architecture d'identité WebRTC ce qui nous permet de montrer que cette architecture n'est pas particulièrement adaptée à une intégration aux protocoles de délégation d'authentification existants tels qu'OpenID Connect. Pour répondre à RQ1, nous montrons ensuite comment la position centrale des fournisseurs d'identité dans l'écosystème du Web est renforcée par leur intégration à l'établissement de session WebRTC, posant ainsi un risque supplémentaire contre la discrétion des utilisateurs. Dans l'écosystème Web, la norme est l'architecture des services en silo dont les utilisateurs sont captifs. C'est en particulier le cas des systèmes de délégation d'authentification, pour lesquels la plupart du temps, il n'est pas possible de choisir son fournisseur d'identité. Afin de répondre à RQ3, nous réalisons une étude afin de déterminer pour quelles raisons les utilisateurs ne peuvent pas choisir leur fournisseur d'identité sur Web. Notre étude montre que bien que ce choix soit possible en théorie, l'absence d'implémentation de certains standards par les sites webs et les fournisseurs d'identité empêche ce choix en pratique. Dans notre seconde contribution, nous cherchons à donner plus de contrôle à l'utilisateur. Pour ce faire et en réponse à RQ2, nous proposons une extension de la spécification WebRTC afin de permettre la négociation des paramètres d'identité. Un prototype d'implémentation est proposé afin de valider notre proposition. Cette implémentation révèle certaines limites dues à l'API d'identité WebRTC empêchant notamment d'obtenir un retour sur le niveau d'authentification de l'autre utilisateur ainsi que l'impossibilité de changer de fournisseur d'identité en cours de session. Nous proposons ensuite une API Web permettant aux utilisateurs de choisir leur fournisseur d'identité lors d'une authentification sur un site tiers via une interface de sélection d'identité contrôlée par le navigateur. Répondant à RQ3, notre API repose sur une réutilisation de l'architecture d'identité WebRTC dans un scénario client-serveur. Nous présentons une implémentation de notre solution, basée sur une extension du navigateur Firefox, afin d'en démontrer l'utilisabilité. Nos résultats montrent qu'à long terme, l'adoption de cette API pourrait réduire la charge d'implémentation pour les développeurs de sites Web et permettre aux utilisateurs de préserver leur discrétion en choisissant des fournisseurs d'identité de confiance
In this thesis, we propose three main contributions : In our first contribution we study the WebRTC identity architecture and more particularly its integration with existing authentication delegation protocols. This integration has not been studied yet. To fill this gap, we implement components of the WebRTC identity architecture and comment on the issues encountered in the process. In order to answer RQ1, we then study this specification from a privacy perspective an identify new privacy considerations related to the central position of identity provider. In the Web, the norm is the silo architecture of which users are captive. This is even more true of authentication delegation systems where most of the time it is not possible to freely choose an identity provider. In order to answer RQ3, we conduct a survey on the top 500 websites according to Alexa.com to identify the reasons why can't users choose their identity provider. Our results show that while the choice of an identity provider is possible in theory, the lack of implementation of existing standards by websites and identity providers prevent users to make this choice. In our second contribution, we aim at giving more control to users. To this end and in order to answer RQ2, we extend the WebRTC specification to allow identity parameters negotiation. We present a prototype implementation of our proposition to validate it. It reveals some limits due to the WebRTC API, in particular preventing to get feedback on the other peer's authentication strength. We then propose a web API allowing users to choose their identity provider in order to authenticate on a third-party website, answering RQ2. Our API reuse components of the WebRTC identity architecture in a client-server authentication scenario. Again, we validate our proposition by presenting a prototype implementation of our API based on a Firefox extension. Finally, in our third contribution, we look back on RQ1 and propose a trust and security model of a WebRTC session. Our proposed model integrates in a single metric the security parameters used in the session establishment, the encryption parameters for the media streams, and trust in actors of the communication setup as defined by the user. Our model objective is to help non-expert users to better understand the security of their WebRTC session. To validate our approach, we conduct a preliminary study on the comprehension of our model by non-expert users. This study is based on a web survey offering users to interact with a dynamic implementation of our model
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12

Brgulja, Amir. "A Real-Time Electronic Sound Analysis System with Graphical User Interface." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84180/.

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Noise-induced hearing loss is a serious problem common to musical environments. Current dosimetry technology is primarily designed for industrial environments and not suited for musical settings. At present, there are no government regulations that apply to the educational music environment as it relates to monitoring and prevention of hearing loss. Also, no system exists than can serve as a proactive tool in observation and reporting of sound exposure levels with the goal of hearing conservation. Newly proposed system takes a software based approach in designing a proactive dosimetry system that can assess the risk of sound noise exposure. It provides real-time feedback trough a graphical user interface that is capable of database storage for further study.
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13

Perciballi, Christopher J. "Real-time adaptive morphing website modeled per user and optimized across users." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61568.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 18).
Morphing is a powerful tool for providing users with information in a format that benefits them most. It has been shown to increase trust and sales. This thesis describes the implementation of a modular website that morphs based on the click stream of each individual user and learns how to pick the optimal morph based on aggregate user results. The main components are the website controller, the Bayesian Inference Engine, and the Gittins' Optimization Engine. The website controller acts as the interface between the user input and the mathematical modeling of the user's cognitive styles. It uses the Bayesian Engine to update the model and the Gittins' Engine to select the best morph in order to modify the website view. The project was run in survey format to test the effectiveness of morphing for the Suruga Card Loan advice site as well as to test performance and feasibility of real-time morphing and optimization.
by Christopher J. Perciballi.
M.Eng.
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14

Kylmänen, Ester, and Emma Tysk. "Online networking and real-time interaction for musicians." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446815.

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Despite the many technological advancements made in the music industry in recent years, there is still not a single widely adopted platform for musicians to play music together online. In 2020, the Covid-19 pandemic and the subsequent quarantine pushed the need for such a platform into the spotlight. As a response, the music company Elk Audio launched their new product: Aloha. Aloha is a combined hardware and web application that allows musicians to play music in real-time over the Internet. Aloha is currently only intended for musicians who already know each other to connect and play. However, Elk's ambition is to make it the go-to platform for musicians to expand their network.  The purpose of this Master's Thesis is to design the next version of the web application of Aloha, focusing on social interactions. This Master's Thesis investigates musicians' current social and musical behaviour, and their opinions of how this can be done online. Qualitative data was collected by performing semi-structured interviews with musicians of different backgrounds. The study revealed many different goals and needs of potential users of Aloha. Furthermore, we found several determining factors which enable and encourage musicians to form new musical relationships online. The final suggested design is based on the analysed data and founded in theory regarding persuasive and recommending system design, among others.
Trots de tekniska framstegen som gjorts inom musikindustrin de senaste åren, finns det fortfarande inte ett enda allmänt accepterat alternativ för musiker att spela musik tillsammans online. Covid-19 pandemin och den åtföljande karantänten förde behovet för en sådan plattform till rampljuset. I början av år 2020 insåg musikföretaget Elk Audio att de kunde fylla denna lucka med sin nya produkt: Aloha. Aloha är en kombinerad hårdvara och webbapplikation som möjliggör musiker att spela musik i realtid över Internet. Aloha är för närvarande endast avsedd för musiker som redan känner varandra. Elks ambition är dock att göra Aloha till en plattform för musiker där de kan utöka sitt musikaliska nätverk. Syftet med detta examensarbete är att utforma nästa version av Alohas webbapplikation, med fokus på sociala interaktioner. Detta examensarbete undersöker musikers nuvarande sociala och musikaliska beteenden och deras åsikter om musikaliska interaktioner online. Kvalitativa data samlades in genom att utföra halvstrukturerade intervjuer med musiker från olika bakgrunder. Studien avslöjade de många olika målen och behoven hos potentiella användare av Aloha. Dessutom fann vi flera avgörande faktorer som möjliggör och uppmuntrar musiker att skapa och underhålla nya musikrelationer online. Den slutliga föreslagna designen baseras på det analyserade datat och grundas i teori om design av rekommendationssystem, m. fl..
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15

Larsson, Rickard. "A user centric approach for evaluating and enhancing the usability of a complex real-time web user interface." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188680.

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As the technologies evolve, more complex products such as real-time web applications are made. These applications introduce new usability challenges and interaction design opportunities. The purpose of this work was to evaluate and enhance the usability of a complex real-time web user interface using a User-centered design approach. Another aim was to investigate how to adapt the current usability research methods, guidelines and principles to today's modern technology, such as real-time web applications. The research was carried out for the Stockholm based start-up Challengermode AB that is currently developing a competitive gaming platform with a focus in automatic tournaments. The research method consisted of a user and system analysis, usability testing and a creative design workshop. The research results were used in combination with current user interface design guidelines and principles to improve and design new features to the current user interface. The results show that the User-centered design approach in combination with Participatory design was a successful way of evaluating and improving the usability of the Challengermode real-time web user interface. The current usability research and design guidelines are applicable to modern technology, but in order to evaluate the Challengermode real-time web user interface, and other applications with similar functionality in a realistic scenario, traditional usability testing can be limited. Furthermore, the main takeaways from the user interface improvement process is that designing for empty states and not hiding important elements even though they are not active is as important as designing for the optimal case where data is available.
I och med att tekniken förbättras utvecklas allt mer komplexa produkter såsom realtidswebbapplikationer. Dessa applikationer inför nya utmaningar och möjligheter inom användbarhet och interaktionsdesign. Syftet med detta arbete var att utvärdera och förbättra användbarheten av ett komplex realtidswebbgränssnitt med hjälp av en användarcentrerad designstrategi. Ett annat syfte var att undersöka hur man kan anpassa existerande metoder, riktlinjer och principer inom användbarhetsforskning och interaktionsdesign för dagens moderna teknik, såsom realtidswebbapplikationer. Arbetet genomfördes för det Stockholm baserade start-up företaget Challengermode AB som för närvarande utvecklar en tävlingsplattform för eSport med fokus på automatiska turneringar. Forskningsmetoden bestod av en användar- och systemanalys, användbarhetstester och en kreativ designworkshop. Forskningsresultaten användes sedan i kombination med riktlinjer och principer inom interaktionsdesign för att förbättra och utveckla nya funktioner för det aktuella användargränssnittet. Resultaten visar att en användarcentrerad designstrategi i kombination med kooperativ design var ett framgångsrikt sätt att utvärdera och förbättra användbarheten av Challengermodes realtidswebbgränssnitt. Dagens forskning inom användbarhet och designriktlinjer är applicerbara på modern teknik, men för att utvärdera Challengermodes realtidswebbgränssnitt, och andra liknande applikationer i ett realistiskt scenario, kan traditionella användbarhetstester vara begränsade. De viktigaste slutsatserna från designprocessen är att design för element i tomma tillstånd är lika viktigt som design för element i det optimala tillståndet där data är tillgänglig.
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16

Thompson, Dean (Dean Barrie) 1974. "Dynamic reconfiguration under real-time constraints." Monash University, School of Computer Science and Software Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7991.

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17

Lokshin, Kirill, Amit Puri, Dana Irvin, Frank Ross, and Rebecca Rush. "Implementing Real-time Provisioning for Space Link Extension (SLE) Service Instances." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581641.

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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California
Space Link Extension (SLE) is a set of recommended standards for mission cross support developed by the Consultative Committee for Space Data Systems (CCSDS). The SLE recommendations define protocols for extending the space link from ground terminals to other facilities deeper within a ground network, allowing distributed access to space link telecommand and telemetry services. The SLE protocols are widely used to provide cross support between sites, programs, and agencies. In traditional SLE deployments, individual service instances have been manually provisioned well in advance of the commencement of cross support for a particular mission, and hardware and software resources have been allocated to those service instances at the time of provisioning. While valid, this approach requires that dedicated resources be provided for each mission and service instance, and limits an SLE provider's ability to reallocate resources in real time based on system availability or other factors. This paper discusses an alternative approach to SLE service provisioning, in which individual service instances are assigned resources from a common resource pool at the time that each service instance is initialized. The paper addresses the key design elements and technical tradeoffs involved in this approach, and discusses the potential benefits with regard to load balancing, equipment reuse, and resiliency against system failure.
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18

Ghasemi, Saeed. "Real-time digital signal processing for new wavelength-to-the-user optical access networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/668699.

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Nowadays, optical access networks provide high capacity to end users with growing availability of multimedia contents that can be streamed to fixed or mobile devices. In this regard, one of the most flexible and low-cost approaches is Passive Optical Network (PON) that is used in Fiber-to-the-Home (FTTH). Due to the growing of the bandwidth demands, Wavelength Division Multiplexing (WDM), and later on ultra-dense WDM (udWDM) PON, with a narrow channel spacing, to increase the number of users through a single fiber, has been deployed. The udWDM-PON with coherent technology is an attractive solution for the next generation optical access networks with advanced digital signal processing (DSP). Thanks to the higher sensitivity and improved channel selectivity in coherent detection with efficient DSP, optical networks support larger number of users in longer distances. Since the cost is the main concern in the optical access networks, this thesis presents DSP architectures in coherent receiver (Rx), based on low-cost direct phase modulated commercial DFB lasers. The proposals are completely in agreement with consept of wavelength-to-the-user, where each client in optical network is dedicated to an individual wavelength. Next, in a 6.25 GHz spaced udWDM grid with the optimized DSP techniques and phase-shift-keying (PSK) modulation format, the high sensitivity is achieved in real-time field-programmable-gate-array (FPGA) implementations. Moreover, this thesis reduces hardware complexity of optical carrier recovery (CR) with two various strategies. First, based on differential mth-power frequency estimator (FE) by using look-up-tables (LUTs) and second, LUT-free CR architecture, with optimizing the power consumption and hardware resources, as well as improving the channel selectivity in terms of speed and robustness. Furthermore, by designing very simple but efficient clock recovery, a symbol-rate DSP architecture, which process data using only one sample per symbol (1-sps), for polarization diversity (POD) structure, becomes possible. It makes the DSP independent from state-of-polarization (SOP), even in the case of low-cost optical front-end and low-speed analog-to-digital converters (ADCs), keeps the performance high as well as sensitivity in real-time implementations on FPGA.
Avui en dia, les xarxes d'accés òptic proporcionen una alta capacitat als usuaris finals amb una creixent disponibilitat de continguts multimèdia que es poden transmetre a dispositius fixos o mòbils. En aquest sentit, un dels enfocaments més flexibles i de baix cost és la Xarxa Òptica Passiva (PON) que s'utilitza a Fibra-fins-la-Llar (FTTH). A causa del creixent requeriment de l'ample de banda, s'ha desplegat la multiplexació de divisió d'ona (WDM) i, posteriorment, el PON amb WDM d'alta densitat (udWDM), amb un espaiat estret de canals, per augmentar el nombre d'usuaris a través d'una sola fibra. L'udWDM-PON amb tecnologia coherent és una solució atractiva per a les xarxes d'accés òptic d'última generació amb processament avançat de senyal digital (DSP). Gràcies a la major sensibilitat i a la selectivitat millorada del canal en la detecció coherent amb DSP eficient, les xarxes òptiques suporten un nombre més gran d'usuaris a distàncies més llargues. Atès que el cost és la principal preocupació en les xarxes d'accés òptic, aquesta tesi presenta arquitectures DSP en receptor coherent (Rx), basades en làsers DFB comercials modulats en fase directa de baix cost. Les propostes estan d'acord amb la asignació de la longitud d'ona a l'usuari, on a cada client de la xarxa òptica se li dedica a una longitud d'ona individual. A continuació, en una graella udWDM espaciada de 6,25 GHz amb les tècniques de DSP optimitzades i el format de modulació de fase (PSK), s'aconsegueix l'alta sensibilitat en implementacions field-programable-gate-array (FPGA) en temps real. A més, aquesta tesi redueix la complexitat del maquinari de recuperació òptica de portadors (CR) amb dues estratègies diverses. Primer, basat en un estimador de freqüència de potència diferencial (FE) mitjançant l'ús de taules de cerca (LUTs) i, en segon lloc, l'arquitectura CR sense LUT, amb l'optimització del consum d'energia i els recursos de maquinari, a més de millorar la selectivitat del canal en termes de velocitat i robustesa. A més, al dissenyar una recuperació de rellotge molt simple, però eficaç, es fa possible una arquitectura DSP a la velocitat dels símbols, que processa dades utilitzant només una mostra per símbol (1-sps) per a l'estructura de la diversitat de polarització òptica (POD). Fa que el DSP sigui independent de l'estat de polarització (SOP), fins i tot en el cas dels analog-to-digital converters (ADC) de front-end òptics de baix cost, i manté el rendiment alt i la sensibilitat en les implementacions en temps real de FPGA.
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19

Toker, Ahmet Cihat Verfasser], and Sahin [Akademischer Betreuer] [Albayrak. "User Facilitated Real-Time Inter-Operator Resource Sharing / Ahmet Cihat Toker. Betreuer: Sahin Albayrak." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1014619610/34.

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20

Kumssa, Aida Meredassa. "Tablet User Interface Evaluation for a Portable Ultrasound System and Real time Doppler SpectrumProcessing." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23169.

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In this thesis, real time Doppler spectrum processing and Tablet user interface evaluation for portable ultrasound system is done.In most ultrasound machines, fast fourier transform and other spectral processing requires a specialized hardware, which is costly. In order to have a low cost and portable ultrasound device for application in rural areas, a tablet ultrasound system can be developed. The cost of such a device can be minimized by doing as much real-time processing as possible on the tablet. In the thesis,Doppler spectrum processing and visualization is implemented using various techniques for application on a tablet user interface. The spectral properties are properly designed and the required components of the spectrum rendering window are fully developed. Various user control systems are also developed to allow user interactivity.Tablet user interface evaluation was conducted to assess the usability of the user interface for intended end users (midwives). Before conducting the evaluation, some improvements were performed to the prototype user interface. The usability evaluation of the user interface was conducted by giving usability test task over a group of midwives and evaluated using various usability evaluation methods. By employing these methods, it was possible to measure the typical usability goals such as efficiency, task completion success rate and satisfaction of the users. The analysed results show that all the midwives have achieved high task completion success rate and good task completion time, which is acceptable and most of the users are satisfied with the application.Due to some facility limitations at the beginning of the thesis work, a pilot usability study and its subsequent user interface improvement, which were planned at the beginning, are not included as part of this thesis.
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Rahman, Md Abed. "Toward user-adaptive visualizations : further results on real-time prediction of user cognitive abilities from action and eye-tracking data." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62128.

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Previous work has shown that some user cognitive abilities relevant for processing information visualizations can be predicted from eye tracking data. Performing this type of user modeling is important for devising user-adaptive visualizations that can adapt to a user’s abilities as needed during the interaction. In this thesis, we contribute to previous work by extending the type of visualizations considered and the set of cognitive abilities that can be predicted from gaze data, thus providing evidence on the generality of these findings. We also evaluate how quality of gaze data impacts prediction. Finally, we further extend previous work by investigating interaction data as an alternative source to predict our target user characteristics. We present a formal comparison of predictors based solely on gaze data, on interaction data, or on a combination of the two.
Science, Faculty of
Computer Science, Department of
Graduate
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22

Flanagan, Nevin. "Tilt and Multitouch Input for Tablet Play of Real-Time Strategy Games." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/1163.

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We are studying the use of tilt-enabled handheld touchscreen devices as an interface for top-down strategy games. We will explore how using different input modes (tilt and touch) compare for certain tasks in terms of efficiency and comfort. Real-time and turn-based strategy games are a popular form of electronic gaming, though these games currently have only minor representation on tablets. This genre of game requires both a wide variety of input and the display of a wealth of information. We are exploring whether, with suitable interface developments, this genre can become as accessible on tablet devices as on traditional computers. These interface approaches may also prove useful for expanding the presence of other game genres in the mobile space.
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Yildiz, Mursel. "User Directed View Synthesis On Omap Processors." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610682/index.pdf.

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In this thesis, real time image rendering for hand held devices is studied according to user&rsquo
s view point choice and using image frames with corresponding depth maps obtained from 2 different cameras, of which positions on coordinate system is known. User&rsquo
s view point choice is restricted to the area between right, and left cameras. Occlusion handling methods for image rendering systems is explored and discussed together with frame enhancement techniques. Median filtering is studied for multicolor image frames and post processing methods are discussed for image enhancement at the end of rendering algorithm. In this thesis, OMAP3530 microprocessor is used as the main processor which processes suggested rendering algorithm with occlusion handling and frame enhancement. proposed algorithms are implemented on DSP core and ARM cores of OMAP3530 separately and their performances are evaluated through experiments. Embedded Linux (Kernel-2.6.22) is run as the operating system for applications. Driver usage together with devices for Linux embedded operating system is explored and studied. 3 boards are used for the realization of proposed system. OMAP35x EVM board from Mistral Solutions Company is used for processor utilization, high resolution LCD utilization, system monitoring, user interface and communication purposes. Two daughter cards are designed for user view point determination. First daughter card handles communication process with EVM board and calculates view point according to input from second daughter card with single axis response GYRO sensor (ADIS16060). Spartan®
-3A DSP FPGA family is utilized in this system for view point determination. DSP slices that are hardly present inside gate arrays of this FPGA family are utilized and their performance is studied. Asynchronous memory interface, i2c bus interface, SPI interface are studied and implemented on FPGA.
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24

Moeller, Kenneth Brett. "Evolution of a graphical user interface for the rapid prototyping of real-time embedded systems." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341448.

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Thesis (M.S. in Computer Science) Naval Postgraduate School, September 1997.
"September 1997." Thesis advisor(s): Man-Tak Shing, Valdis Berzins. Includes bibliographical references (p. 429-430). Also available online.
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Rose, Cody M. (Cody McCullough). "Towards interactive sustainable neighborhood design : combining a tangible user interface with real time building simulations." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99253.

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Thesis: S.M. in Building Technology, Massachusetts Institute of Technology, Department of Architecture, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 73-74).
An increasingly urbanizing human population presents new challenges for urban planners and designers. While the field of urban design tools is expanding, urban development scenarios require the input of multiple stakeholders, each with different outlooks, expertise, requirements, and preconceptions, and good urban design requires communication and compromise as much as it requires effective use of tools. The best tools will facilitate this communication while remaining evidence-based, allowing diverse planning teams to develop high quality, healthy, sustainable urban plans. Presented in this work is a new such urban design tool, implemented as a design "game," created to facilitate collaboration between urban planners, designers, policymakers, citizens, and any other stakeholders in urban development scenarios. Users build a neighborhood or city out of Lego pieces on a plexiglass tabletop, and the system simulates the built design in real time, projecting colors onto the Lego pieces that reflect their performance with respect to three urban performance metrics: operational energy consumption, neighborhood walkability, and building daylighting availability. The system requires little training, allowing novice users to explore the design tradeoffs associated with urban density. The simulation method uses a novel precalculation method to quickly approximate the results of existing, validated simulation tools. The game is presented in the context of a case study that took place at the planning commission of Riyadh, Saudi Arabia in March 2015. Post-game analysis indicates that the precalculation method performs suitable approximations in the Saudi climate, and that users were able to use the interface to improve their neighborhoods' performance with respect to two of the three offered performance metrics. Furthermore, users demonstrated substantial enthusiasm for interactive, tangible, urban design of the sort provided. Improvements to future versions of the design game based on the case study are suggested, but overall, the work presented indicates that collaborative, interactive design tools for diverse stakeholders are an excellent path forward for sustainable design.
by Cody M. Rose.
S.M. in Building Technology
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Horchidan, Sonia-Florina. "Real-time forecasting of dietary habits and user health using Federated Learning with privacy guarantees." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281366.

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Modern health self-monitoring devices and applications, such as Fitbit and MyFitnessPal, empower users to take concrete actions and set fitness and lifestyle goals based on their recorded trends and statistics. Predicting such trends is beneficial in the road of achieving long-time targets, as the individuals can adjust their diets and habits at any point to guarantee success. The design and implementation of such a system, which also respects user privacy, is the main objective of our work.This application is modelled as a time-series forecasting problem. Given the historical data of users, we aim to predict their eating and lifestyle habits in real-time. We apply the federated learning paradigm to our use-case be- cause of the highly-distributed nature of our data and the privacy concerns of such sensitive recorded information. However, federated learning from het- erogeneous sequences of data can be challenging, as even state-of-the-art ma- chine learning techniques for time-series forecasting can encounter difficulties when learning from very irregular data sequences. Specifically, in the pro- posed healthcare scenario, the machine learning algorithms might fail to cater to users with unique dietary patterns.In this work, we implement a two-step streaming clustering mechanism and group clients that exhibit similar eating and fitness behaviours. The con- ducted experiments prove that learning federatively in this context can achieve very high prediction accuracy, as our predictions are no more than 0.025% far from the ground truth value with respect to the range of each feature. Training separate models for each group of users is shown to be beneficial, especially in terms of the training time, but it is highly dependent on the parameters used for the models and the training process. Our experiments conclude that the configuration used for the general federated model cannot be applied to the clusters of data. However, a decrease in prediction error of more than 45% can be achieved, given the parameters are optimized for each case.Lastly, this work tackles the problem of data privacy by applying state-of- the-art differential privacy techniques. Our empirical study shows that noising the gradients sent to the server is unsuitable for small datasets and cancels out the benefits obtained by prior users’ clustering. On the other hand, noising the training data achieves remarkable results, obtaining a differential privacy level corresponding to an epsilon value of 0.1 with an increase in the observed mean absolute error by a factor of only 0.21.
Moderna apparater och applikationer för självövervakning av hälsa, som Fitbit och MyFitnessPal, ger användarna möjlighet att vidta konkreta åtgärder och sätta fitness- och livsstilsmål baserat på deras dokumenterade trender och statistik. Att förutsäga sådana trender är fördelaktigt för att uppnå långtidsmål, eftersom individerna kan anpassa sina dieter och vanor när som helst för att garantera framgång.Utformningen och implementeringen av ett sådant system, som dessutom respekterar användarnas integritet, är huvudmålet för vårt arbete. Denna appli- kation är modellerad som ett tidsserieprognosproblem. Med avseende på an- vändarnas historiska data är målet att förutsäga deras matvanor och livsstilsva- nor i realtid. Vi tillämpar det federerade inlärningsparadigmet på vårt använd- ningsfall på grund av den mycket distribuerade karaktären av vår data och in- tegritetsproblemen för sådan känslig bokförd information. Federerade lärande från heterogena datasekvenser kan emellertid vara utmanande, eftersom även de modernaste maskininlärningstekniker för tidsserieprognoser kan stöta på svårigheter när de lär sig från mycket oregelbundna datasekvenser. Specifikt i det föreslagna sjukvårdsscenariot kan maskininlärningsalgoritmerna misslyc- kas med att förse användare med unika dietmönster.I detta arbete implementerar vi en tvåstegsströmmande klustermekanism och grupperar användare som uppvisar liknande ät- och fitnessbeteenden. De genomförda experimenten visar att federerade lärande i detta sammanhang kan uppnå mycket hög nogrannhet i förutsägelse, eftersom våra förutsägelser in- te är mer än 0,025% ifrån det sanna värdet med avseende på intervallet för varje funktion. Träning av separata modeller för varje grupp användare visar sig vara fördelaktigt, särskilt gällande träningstiden, men det är mycket be- roende av parametrarna som används för modellerna och träningsprocessen. Våra experiment drar slutsatsen att konfigurationen som används för den all- männa federerade modellen inte kan tillämpas på dataklusterna. Dock kan en minskning av förutsägelsefel på mer än 45% uppnås, givet att parametrarna är optimerade för varje fall.Slutligen hanteras problemet med datasekretess genom att tillämpa bästa tillgängliga differentiell integritetsteknik. Vår empiriska studie visar att adde- ra brus till gradienter som skickas till servern är olämpliga för liten data och avbryter fördelarna med tidigare användares kluster. Däremot, genom att ad- dera brus till träningsdata uppnås anmärkningsvärda resultat. En differentierad integritetsnivå motsvarande ett epsilonvärde på 0,1 med en ökning av det ob- serverade genomsnittliga absoluta felet med en faktor på endast 0,21 erhölls.
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Cosman, Vadim, and Kailash Chowdary. "End user interface for collecting and evaluating company data : Real-time data collection through web-scraping." Thesis, Högskolan Dalarna, Institutionen för information och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:du-37740.

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The demand of open and reliable data, in the Era of Big Data is constantly increasing as thediversity of research and the need of trustworthy data as high-quality data is increasesconsiderably the quality of the findings . However, it is very hard to get reliable data for free witha small effort. With an immense progress of tools, on one hand for data scraping, data cleansing,data storing, and on the other hand so many platforms with data that can be scrapped, it isabsolutely crucial to make use of them and easily build data sets with real and trustworthy data,for free and in a user-friendly way. Using several available tools, an application with a graphicaluser interface (GUI) was developed. The possibilities of the applications are: collecting financialdata for any given list of companies, updating an existent data set, build a data set out of thewhole data warehouse(DW), based on several filters, make the data sets available to anyone whouses the application, and build simple visualization of the existent data. To make sure that‘garbage data in – garbage data out’ concept is avoided, a constant analysis of the data quality isperformed, and the quality of the data is adjusted so that it is ready for use in a research project.The work provides a viable solution for collecting data and making it borderless while respectingthe standards of data sharing. The application can collect data from 2 sources, with more than250 features per company. The application is updated with more functionalities and more sourcesof data.
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28

HABIBI, SHAHRYAR. "Smart Workplace. Micro-Climatization and Real-Time Digitalization Effects on Energy Efficiency Based in User Behavior." Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2403220.

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Smart Workplace. Micro-Climatizzazione e digitalizzazione in Real-Time: effetti sull’efficienza energetica nei luoghi di lavoro in relazione al comportamento d'utenza. La previsione di sistemi intelligenti di gestione energetica degli edifici - in particolare nei luoghi di lavoro - e l'utilizzo di building information modeling (BIM) in abbinamento a sistemi di sensori intelligenti, sono accreditati come strumenti di prezioso potenziale risparmio energetico. In questo quadro, tuttavia, per un architetto l’obiettivo principale è la comprensione dell’importanza, del funzionamento e dello sviluppo dei sistemi di digitalizzazione in tempo reale e di micro-climatizzazione utilizzabili. I sistemi di gestione intelligenti (IMSS) presentano infatti un notevole potenziale di risparmio energetico, ma non sono stati ancora pienamente applicati né agli edifici né tantomeno a scala urbana. Lo studio delle abitudini d’utenza sui posti di lavoro ha evidenziato come l’impiego di sistemi di sensori intelligenti per il controllo della qualità ambientale possa divenire un validissimo strumento per migliorare la qualità interna ambientale (IEQ) e così garantire un elevato comfort di utilizzo. Per la massima efficacia/applicabilità di queste strategie è stata condotta un’analisi sul rapporto costi-benefici che ha evidenziato la necessità di prevedere la scelta di tecnologie non eccessivamente sofisticate per quanto ad alte prestazioni. Il presente studio si è posto quindi come obiettivo di minimizzare il consumo di energia e – attraverso la comprensione e la memorizzazione del comportamento dell’utenza - di raggiungere il massimo comfort ambientale indoor. Per fare questo è stato parallelamente creato e messo a punto un sistema di scambio dati in tempo reale (Real Time) per quanto riguarda le funzioni delle tecnologie da impiegare. Tuttavia, il raggiungimento degli obiettivi sopra illustrati con sistemi di sensori intelligenti, richiede l’impiego di strumenti di simulazione digitale che svolgono un ruolo cruciale nella ricerca di soluzioni per problemi di ottimizzazione. Nonostante i progressi intervenuti nel campo delle tecnologie dell'informazione e della comunicazione (ICTs), esistono ancora limitazioni - come ad esempio una limitata possibilità di controllo e di monitoraggio delle condizioni ambientali - soprattutto se si considera che efficaci sistemi di visualizzazione in tempo reale dei comportamenti degli utenti non hanno ancora raggiunto piena maturità nella loro applicazione agli edifici. Obiettivo di questo lavoro è quindi quello di presentare i principali progressi intervenuti nell’ambito delle soluzioni di ottimizzazione del risparmio energetico ed in particolare delle strategie gestionali energetiche basate su tecnologie ICT. IV In questo contesto, viene proposta la progettazione di algoritmi di intelligenza artificiale (AI) e interfacce intelligenti messe a punto al fine di migliorare l'interazione tra utenti e il sistema di gestione energetica degli edifici (BEMSs). Il risultato della ricerca è lo sviluppo di un apparato di valutazione della qualità ambientale interna dei luoghi di lavoro basato su sistemi Arduino. L’apparato progettato permette la misurazione dell'umidità, della temperatura, la valutazione dei livelli sonori e d’illuminazione sul posto di lavoro. Il dispositivo può essere collegato ai computer degli utenti con un cavo micro-USB e offre la possibilità di rilevare il grado di soddisfazione degli utenti del comfort indoor tramite interfacce intelligenti e segnalazioni visive con luci a led. Il comportamento degli utenti si presenta come un fattore determinante per la progettazione di edifici ad alta efficienza: comportamenti diversificati possono condurre infatti a sensibili variazioni del consumo di energia. L’individuazione di comportamenti non energeticamente virtuosi devono essere rilevati per porre in essere efficaci strategie di compensazione e ottimizzazione. Questo lavoro cerca quindi di analizzare i modelli di comportamento degli utenti per orientare verso nuovi comportamenti virtuosi che possono incidere sulle condizioni di comfort e al contempo sull’efficienza energetica dello spazio. Per questo è stata sviluppata un’interfaccia intelligente in grado di salvare dati e modelli di comportamento degli utenti per migliorare il supporto per i futuri processi di adattamento. Secondo le ricerche e i risultati del presente lavoro, destinatari privilegiati sembrano essere diverse categorie di attori del processo e della gestione energetica dell’edificio. I risultati paiono d’interesse sia per architetti che per ingegneri e utilizzatori, ma anche per esperti e sviluppatori di building information modeling (BIM) e coloro che sono interessati a valutare l'ambiente costruito . Al fine di aumentare la consapevolezza del ruolo del comportamento degli utenti per l’ottimizzazione delle condizioni di efficienza energetica e comfort, il lavoro propone anche una strategia di combinazione di sistemi intelligenti open source (Arduino Systems) con algoritmi di intelligenza artificiale e interfacce intelligenti. La combinazione di tali programmi e sistemi con il building information modeling (BIM) ambientali del tipo open-source è in grado di migliorare non solo il processo di costruzione, ma anche di consentire l'esplorazione di approcci alternativi. Il lavoro approfondisce inoltre la potenziale applicazione di un sistema di gestione dell'energia del tipo smart micro scale a due ambienti di ufficio e si concentra sulla verifica del potenziale di prestazioni offerte dall’integrazione di questi sistemi intelligenti e sostenibili. V Spiega inoltre come il building information modeling (BIM) possa contribuire a facilitare revisione dei medodi utilizzati e dei risultati ottenuti. In conclusione, nel contesto della progettazione tecnologica, questo lavoro vuole introdurre una metodologia basata su un smart approach connotato da logiche comportamentali d’utenza. Logiche che, tradotte in algoritmi di ottimizzazione e abbinate a sistemi intelligenti a basso costo, rendono possibile il superamento del divario tra i sistemi di gestione degli edifici (BMSs) e gli utenti stessi.
An approach to intelligent building energy management systems at the workplace level has the potential to save energy through the use of building information modeling (BIM) and smart sensor systems. Its development focuses on micro-climatization and real-time digitalization systems from an architect’s point of view. Intelligent management systems (IMSs) have significant potential for energy savings, but they have not been fully used in buildings and cities. Smart sensor systems based on user behavior will improve indoor environmental quality (IEQ) and user comfort. A cost-effective strategy has been implemented by using a low-technology and high-performance approach. This work aims to reduce energy consumption and provide comfort conditions by learning user behavior. Furthermore, it seeks to create a real-time system with regard to the functions of developed technologies. In order to improve energy efficiency and comfort conditions, smart sensor systems and digital simulation tools play a crucial role in finding optimal solutions to optimization problems. Despite the progress in the field of information and communication technologies (ICTs), they are still limitations such as limited control and monitoring of environmental conditions, especially considering that real-time and effective visualization systems based on user behavior are not yet fully mature in buildings. This work attempts to present the main progress in the fields of cost-effective energy-saving solutions and effective energy management strategies based on ICT-related technologies. In this context, the design of artificial intelligence algorithms (AI) and intelligent user interfaces will be discussed in order to enhance user interaction and building energy management system (BEMSs). The research result is the development of an indoor quality apparatus based on Arduino systems. This measures humidity, temperature, lighting, and sound levels at the workplace. It can be connected to users’ computers with a micro-USB cable or power to detect whether users are satisfied with the indoor climate via intelligent interfaces and alarm led lights. User behavior is a driving factor for designing efficient buildings. It can lead to variations in energy consumption. Detailed identification of gaps related to behavioral issues need to be discovered and effective gap-filling strategies developed. This work attempts to analyze user behavior patterns in order to adopt new behavior that can affect comfort conditions and energy efficiency of a space effectively. Therefore, an intelligent interface has been developed that can save data and user behavior patterns to improve support to future adaptation processes. According to findings and results of the current work, it seems that a wide range of architects, engineers, building users, building information modeling (BIM) experts and those interested in assessing the built environment can be regarded as stakeholders. II In order to raise awareness of the role of user behavior in energy efficiency and comfort conditions, the work introduces a strategy of combining open source smart systems (Arduino systems) with artificial intelligence algorithms and intelligence interfaces. Furthermore, it emphasizes the fact that a combination of open-source environmental programs and systems with building information modeling (BIM) can improve not only the construction process but also enable exploration of alternative approaches. The work discusses the potential application of a smart micro scale energy management system to two office environments and focuses on the review of the potential performance of integrated smart and sustainable systems. It also explains how building information modeling (BIM) can help facilitate review of results and methods. In the context of architectural technology, this work introduces an adopted intelligent method approach employing users, optimization algorithms and low-cost smart systems for bridging the gap between building management systems (BMSs) and users.
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Karri, Janardhan Bhima Reddy. "Low Power Real-time Video and Audio Embedded System Design for Naturalistic Bicycle Study." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5518.

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According to NHTSA Traffic Safety Facts [9], bicyclist deaths and injuries in 2013 are recorded as 732 and 48,000, respectively. In the State of Florida the safety of bicyclists is of particular concern as the bicycle fatality rates are nearly triple the national average. Further Florida ranks #1 on bicycle fatality rate in the nation for several years. To determine the cause of near-misses and crashes, a detailed study of bicyclist behavior and environmental conditions is needed. In a Florida Department of Transport (FDOT) funded project, USF CUTR has proposed naturalistic bicycle study based on ride data collected from 100 bicyclists for 3000 hrs. To this end, Bicycle Data Acquisition System (BDAS) is being researched and developed. The main objective of this thesis work is to design and implement low power video and audio subsystems of BDAS as specified by domain experts (USF CUTR researchers). This work also involves design of graphical user interface (Windows application) to visualize the data in a synchronized manner. Selection of appropriate hardware to capture and store data is critical as it should meet several criteria like low power consumption, low cost, and small form factor. Several Camera controllers were evaluated in terms of their performance and cost. The major challenges in this design are synchronization between collected data, storage of the video and sensor data, and design of low power embedded subsystems.
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Bobba, Satyajith. "Real time path programming with joystick signals and kinematics selection and development of MATLAB graphical user interface." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460750.

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31

Messaoudi, Farouk. "User equipment based-computation offloading for real-time applications in the context of Cloud and edge networks." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S104/document.

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Le délestage de calcul ou de code est une technique qui permet à un appareil mobile avec une contrainte de ressources d'exécuter à distance, entièrement ou partiellement, une application intensive en calcul dans un environnement Cloud avec des ressources suffisantes. Le délestage de code est effectué principalement pour économiser de l'énergie, améliorer les performances, ou en raison de l'incapacité des appareils mobiles à traiter des calculs intensifs. Plusieurs approches et systèmes ont été proposés pour délester du code dans le Cloud tels que CloneCloud, MAUI et Cyber Foraging. La plupart de ces systèmes offrent une solution complète qui traite différents objectifs. Bien que ces systèmes présentent en général de bonnes performances, un problème commun entre eux est qu'ils ne sont pas adaptés aux applications temps réel telles que les jeux vidéo, la réalité augmentée et la réalité virtuelle, qui nécessitent un traitement particulier. Le délestage de code a connu un récent engouement avec l'avènement du MEC et son évolution vers le edge à multiple accès qui élargit son applicabilité à des réseaux hétérogènes comprenant le WiFi et les technologies d'accès fixe. Combiné avec l'accès mobile 5G, une pléthore de nouveaux services mobiles apparaîtront, notamment des service type URLLC et eV2X. De tels types de services nécessitent une faible latence pour accéder aux données et des capacités de ressources suffisantes pour les exécuter. Pour mieux trouver sa position dans une architecture 5G et entre les services 5G proposés, le délestage de code doit surmonter plusieurs défis; la latence réseau élevée, hétérogénéité des ressources, interopérabilité des applications et leur portabilité, la consommation d'énergie, la sécurité, et la mobilité, pour citer quelques uns. Dans cette thèse, nous étudions le paradigme du délestage de code pour des applications a temps réel, par exemple; les jeux vidéo sur équipements mobiles et le traitement d'images. L'accent sera mis sur la latence réseau, la consommation de ressources, et les performances accomplies. Les contributions de la thèse sont organisées sous les axes suivants : Étudier le comportement des moteurs de jeu sur différentes plateformes en termes de consommation de ressources (CPU / GPU) par image et par module de jeu ; Étudier la possibilité de distribuer les modules du moteur de jeu en fonction de la consommation de ressources, de la latence réseau, et de la dépendance du code ; Proposer une stratégie de déploiement pour les fournisseurs de jeux dans le Cloud, afin de mieux exploiter les ressources, en fonction de la demande variable en ressource par des moteurs de jeu et de la QoE du joueur ; Proposer une solution de délestage statique de code pour les moteurs de jeu en divisant la scène 3D en différents objets du jeu. Certains de ces objets sont distribués en fonction de la consommation de ressources, de la latence réseau et de la dépendance du code ; Proposer une solution de délestage dynamique de code pour les moteurs de jeu basée sur une heuristique qui calcule pour chaque objet du jeu, le gain du délestage. En fonction de ce gain, un objet peut être distribué ou non ; Proposer une nouvelle approche pour le délestage de code vers le MEC en déployant une application sur la bordure du réseau (edge) responsable de la décision de délestage au niveau du terminal et proposer deux algorithmes pour prendre la meilleure décision concernant les tâches à distribuer entre le terminal et le serveur hébergé dans le MEC
Computation offloading is a technique that allows resource-constrained mobile devices to fully or partially offload a computation-intensive application to a resourceful Cloud environment. Computation offloading is performed mostly to save energy, improve performance, or due to the inability of mobile devices to process a computation heavy task. There have been a numerous approaches and systems on offloading tasks in the classical Mobile Cloud Computing (MCC) environments such as, CloneCloud, MAUI, and Cyber Foraging. Most of these systems are offering a complete solution that deal with different objectives. Although these systems present in general good performance, one common issue between them is that they are not adapted to real-time applications such as mobile gaming, augmented reality, and virtual reality, which need a particular treatment. Computation offloading is widely promoted especially with the advent of Mobile Edge Computing (MEC) and its evolution toward Multi-access Edge Computing which broaden its applicability to heterogeneous networks including WiFi and fixed access technologies. Combined with 5G mobile access, a plethora of novel mobile services will appear that include Ultra-Reliable Low-latency Communications (URLLC) and enhanced Vehicle-toeverything (eV2X). Such type of services requires low latency to access data and high resource capabilities to compute their behaviour. To better find its position inside a 5G architecture and between the offered 5G services, computation offloading needs to overcome several challenges; the high network latency, resources heterogeneity, applications interoperability and portability, offloading frameworks overhead, power consumption, security, and mobility, to name a few. In this thesis, we study the computation offloading paradigm for real-time applications including mobile gaming and image processing. The focus will be on the network latency, resource consumption, and accomplished performance. The contributions of the thesis are organized on the following axes : Study game engines behaviour on different platforms regarding resource consumption (CPU/GPU) per frame and per game module; study the possibility to offload game engine modules based on resource consumption, network latency, and code dependency ; propose a deployment strategy for Cloud gaming providers to better exploit their resources based on the variability of the resource demand of game engines and the QoE ; propose a static computation offloading-based solution for game engines by splitting 3D world scene into different game objects. Some of these objects are offloaded based on resource consumption, network latency, and code dependency ; propose a dynamic offloading solution for game engines based on an heuristic that compute for each game object, the offloading gain. Based on that gain, an object may be offloaded or not ; propose a novel approach to offload computation to MEC by deploying a mobile edge application that is responsible for driving the UE decision for offloading, as well as propose two algorithms to make best decision regarding offloading tasks on UE to a server hosted on the MEC
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Mogili, Anusha, and Manoj Kumar Pallapu. "Evaluating the Effectiveness and Efficiency of Real Time Data Visualization : An Action Research Study." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20638.

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Background. In today’s competitive world, dealing with real-time streaming data is a difficult task to be achieved by many organizations. The importance of real time streaming data is rapidly increasing in all software industries by passing time. For quick growth of the companies, the data should be analysed immediately as data will be changing in fraction of second. The huge data will be generated every day and it will lead to problems such as overload of resources, Performance delays etc.., Which in turn will impact behaviour of the system. Finding the problem area in real time is difficult task to achieve as the data changes every second. Dealing with detection of bottlenecks and making decisions to handle the problem area, based on the real time data has been slow over the past years. It is also complicated due to time and effort required for storing and analysing. Organizations are not intended to wait for decision making information up to weeks or months. Organizations need to make an timely-accurate decisions by detecting problem area, in real time to improve their business support systems behaviour and performance. One of the better solutions is through data visualization as an approach. The visualizations are developed and evaluated by using task based approach. The data is collected using interviews and paper survey, to obtain the effective and efficient visualization in detecting bottlenecks. Objectives. The main objective is to find the most effective and efficient data visualization technique for real time streaming data to detect potential bottlenecks. Methods. In this research study, an action research is opted to answer the objectives. We have used interviews and paper survey to collect data in the terms of performance time, accuracy rate and user preference. Data analysis is performed using the Statistical tests and Narrative analysis method. Results. The final results obtained are the effective and efficient visualization techniques based on less performance time, higher accuracy rate and better user preference. Conclusions. An effective and efficient visualization technique for detection of bottlenecks is obtained for real time streaming data. Different categories of tasks has been used to obtain accurate results.
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Papangelis, Konstantinos. "User driven design of real time passenger information solutions for supporting rural passengers in the context of disruption." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=228210.

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Rural communities face a range of challenges associated with accessibility and connectivity. Though real-time passenger information systems (RTPIS) have been long heralded as offering the potential to mitigate some of these challenges their deployment in rural areas has been very limited. The lack of real-time passenger information has been identified as a contributing factor to a multitude of issues, such as high car usage, low public transport use and travel uncertainty. There is considerable potential for appropriate technologies to contribute to the alleviation of these issues, as evidence exists that they can influence travel behaviour, and cultivate positive attitudes towards the service and the operator. This thesis investigated the interplay between rural passenger experience and real-time information provision. Overall, this work aims to provide an initial stepping point on to understanding the interplay between passenger behaviour, disruptions, passenger experience, and real-time information. In order to explore the aforementioned, first, a series of interviews and focus groups with rural public transport passengers, rural transport operators, government agencies and members of academia have been carried out to study the rural passengers' responses to planned and unplanned travel disruption. Based on these i) a conceptual model that aims to describe the passenger recovery phases to disruption and the associated passenger information requirements, ii) and a framework that highlights characteristics of transport behaviour, and aligns them with drivers of transport behaviour adaptation have been created. Next, through a series of co-designed sessions in various rural areas throughout the UK a mobile technology probe, which provides public transport real time information to the passengers has been developed. Then using the technology probe a two-week before-and-after intervention study with 15 participants has been carried out. The results indicate that real-time information provided through the technology probe adjusted the travel behaviour of the participants. Namely, it improved the utilisation of waiting time of the participants, improved the efficiency of their travelling, and enabled them to find alternatives when needed. Further, to get a better picture of the effect of real-time information on rural travellers, during the intervention study 6 of the participants in their everyday travels for 7 days have been actively observed by the author. The outcomes from this supplemented the data from the study and illustrated how the rural public transport travellers used the system in their day-to-day travels. Finally, all our findings have been combined to co-create a system design with rural public transport passengers that aims to improve their experience during disruption. The final design mainly concentrated on providing information regarding pre-trip, on-trip and on boarding point, journey planning, supporting the rural passenger experience through social media, and disruption. In order to evaluate the applicability and suitability of the design, and explore how it relates to the needs of the rural passengers, two focus groups have been conducted. The results of the evaluation activity illustrate that the mobile RTPI system design was perceived as highly useful and relevant to the needs of the rural passenger.
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Gholikhamseh, Alireza Bizhan. "User interface software and emulation of microscope for a real-time telepathology system using an x-window environment." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278302.

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Many separate applications are being developed, tested, and used in the field of medical imaging. A Telepathology System (TPS) is one such application, allowing pathologist access to microscopy and patient files at remote workstations, through a communications network coupled with a pathologist viewing workstation. This thesis outlines the development of a user interface pathology workstation. It models microscope emulation in place of actual remote site microscopy by utilizing previously recorded specimen slide images. In addition, it models a communication network, and a remote site WS. User scenarios and performance characteristics for all three subsystems are outlined. The thesis confirms TPS can benefit telepathology by providing two way communications between remote sites, access to patient demographic files and prior specimen images for comperative study, and the benefit of long distance consultation. Finally, a discussion of an actual implementation is presented.
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English, Joel Alexander. "Assessing the synchronous online classroom : methodologies and findings in real-time virtual learning environments." Virtual Press, 1999. http://liblink.bsu.edu/uhtbin/catkey/1137523.

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In "Technology and Literacy: A Story about the Perils of Not Paying Attention," Cynthia Selfe charges the field of composition not to simply consider technology a tool, but to "pay attention" to the rhetorical and social implications of those tools. In one sense, paying critical attention to technological literacies echoes the decade-old call for Computers and Writing practitioners to use research as a means of assessing online activities, suggesting that teachers not remain satisfied with the unreflective excitement that has been the operative epistemology of the field from its beginning. In another sense, Selfe's recent call enlists teachers and students in reflective and evaluative class discussion and writing on the technological literacy tools they are learning to use.This dissertation responds to both of these implications as it studies a semester of first-year college composition students within a synchronous online classroom environment. The question that guides my study is, in its most basic form, what happens during synchronous online writing conferences? And to speak to that question, I design an ethnographic context-sensitive text analysis employing grounded theory for data coding, a methodological model adaptable for future research in synchronous online classroom activity. I focus on three issues that have continually arisen in the scholarship surrounding synchronous conferencing: aspects of online language, the implications of the environment within object-oriented MUDs (MOOs), and the use of social constructionism as a theoretical foundation for synchronous conferencing.With the findings from my study, I conclude the dissertation by offering pedagogical suggestions to teachers and students for critically assessing synchronous online discourse. My articulation of assessment mandates that students and teachers engage in it together, collaboratively reflecting on what happens online and learning about synchronous online discourse-a significant ingredient in contemporary literacy.
Department of English
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Singh, Satpreet Harcharan. "A system for generation of near real-time feeds of user-customized hydrometeorology data-products from NEXRAD radar-data." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/886.

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Hydrometeorology researchers use data-products like rainfall maps, quarter-hourly, hourly & daily rainfall accumulation maps, and reflectivity maps to drive their hydrological models. There are many sources available from which to generate such products e.g. (1) Weather-radar scan data, (2) Rain-gauge data and (3) Satellite maps, to name a few. Researchers, however, prefer to deal directly with the data-product, rather than deal with the details of sensor data-collection, data-management, storage, quality-control, processing and format conversion. Many researchers would additionally like a real-time continuous 'feed' of customized hydrometeorology data-products to drive their hydrological models in a real-time continuous fashion. Hydro-NEXRAD II is a new system that is currently being developed at IIHR-Hydroscience and Engineering (at The University of Iowa) to address this need. The system provides rapid and user-friendly access to the aforementioned user-customized hydrometeorology data-products in file formats convenient to researchers. Products are generated using near real-time Weather Surveillance Doppler Radar (WSR-88D) data from the National Weather Service's NEXRAD (NEXt generation RADar) radar-network. The architecture, design and engineering details of Hydro-NEXRAD II are the subject of this thesis.
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Okoro, Ndubuisi Emmanuel. "Development of a supersonic wind tunnel rapid real-time data acquisition and control system." Master's thesis, Mississippi State : Mississippi State University, 2005. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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Gu, Yun. "The Impacts of Real-time Knowledge Based Personal Lighting Control on Energy Consumption, User Satisfaction and Task Performance in Offices." Research Showcase @ CMU, 2011. http://repository.cmu.edu/dissertations/54.

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Current building design and engineering practices emphasizing on energy conservation can be improved further by developing methods focusing on building occupants’ needs and interests in conservation. Specifically, the resulting energy effective building performance improvements cannot reach the desired goals, if the resulting indoor environmental conditions do not meet thermal, visual and air quality needs of the occupants. To meet both energy conservation and human performance requirements simultaneously requires to give the occupants information regarding indoor environmental qualities and energy implications of possible individual decisions. This requires that building control components and systems must enable occupants to understand how the building operates and how their own actions meet both their needs and the energy and environmental goals of the building project. The goal of the research and experiments of this dissertation is to explore if real-time information regarding visual comfort requirements to meet a variety of tasks and to simultaneously conserve energy, improves occupant behavior to meet both objectives. Two workplaces in Robert L. Preger Intelligent Workplace were equipped to test the performance of 60 invited participants in conducting computer based tasks and a paper based task, under three difference lighting controls: 1) Centralized lighting control with no user choice 2) User control of - blind positions for daylight shading - ceiling based lighting fixture luminance output level - task lighting: on/off 3) User control the three components (as listed under point 2 above), with provided simultaneous information regarding energy and related CO2 emissions implications, appropriate light levels meeting tasks requirements, and best choices in order to meet both task requirements and energy conservation goals/objectives. The main findings of the experiments are that real-time information (listed under point 3 above) enables users to meet the visual quality requirements for both computer tasks and the paper task, and to conserve significant amounts of electricity for lighting. Furthermore, the 60 invited participants were asked to identify the importance of the four types of provided information tested in point 3 above. While individual users identified the importance of different information categories, the overall assessment were considered to be significant.
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Aziz, Hatem M. "Reducing Client-Server Communication for Efficient Real-Time Web Applications: The Use of Adaptive Polling as A Case Study for Multi-User Web Applications." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/17341.

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A key challenge of current multi-user web applications is to provide users with interesting events and information in real-time. This research reviews the most common real-time web techniques to identify drawbacks while exploring solutions to improve simplicity, efficiency, and compatibility within a client-server environment. Two solutions are proposed for enhancing the efficiency of real-time web techniques by reducing client-server communication. First, a model of browser monitoring control observes the browser activity and decides if to postpone client-server communication in the case of inactive tabs. This model was implemented and tested with results demonstrating that a significant number of client-server connections can be avoided in the browser background. These results suggest the solution can be optimised for any real-time technique as it benefits from being a developer side technique that works consistently on all browsers. Second, ‘Adaptive Polling’ is a pull-based real-time web technique to overcome bandwidth issues of the reverse AJAX method of ‘Polling’ by controlling the frequency of requesting updates from the server based on the last server response. This approach is implemented and tested with results showing how a significant number of redundant connections can be avoided while the server does not return updates. This solution is a good alternative to other real-time web techniques as it features low latency, the simplicity of implementation, and compatibility with all browsers and servers.
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Stange, Martin [Verfasser], and Burkhardt [Akademischer Betreuer] Funk. "Multi-Channel Advertising Effectiveness - Modeling User Behavior and Approaches for Decision Support in Real-Time Advertising / Martin Stange ; Betreuer: Burkhardt Funk." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2017. http://d-nb.info/1127334735/34.

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Zhou, Wei. "An investigation into a distributed virtual reality environment for real-time collaborative 4D construction planning and simulation." Thesis, University of Wolverhampton, 2009. http://hdl.handle.net/2436/98506.

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The use and application of 4 Dimensional Computer Aided Design (4D CAD) is growing within the construction industry. 4D approaches have been the focus of many research efforts within the last decade and several commercial tools now exist for the creation of construction simulations using 4D approaches. However, there are several key limitations to the current approaches. For example, 4D models are normally developed after the initial planning of a project has taken place using more traditional techniques such as Critical Path Method (CPM). Furthermore, mainstream methodologies for planning are based on individual facets of the construction process developed by discrete contractors or sub-contractors. Any 4D models generated from these data are often used to verify work flows and identify problems that may arise, either in terms of work methods or sequencing issues. Subsequently, it is perceived that current 4D CAD approaches provide a planning review mechanism rather than a platform for a novel integrated approach to construction planning. The work undertaken in this study seeks to address these issues through the application of a distributed virtual reality (VR) environment for collaborative 4D based construction planning. The key advances lie in catering for geographically dispersed planning by discrete construction teams. By leveraging networked 4D-VR based technologies, multidisciplinary planners, in different places, can be connected to collaboratively perform planning and create an integrated and robust construction schedule leading to a complete 4D CAD simulation. Establishing such a complex environment faces both technological and social challenges. Technological challenges arise from the integration of traditional and recent 4D approaches for construction planning with an ad hoc application platform of VR linked through networked computing. Social challenges arise from social dynamics and human behaviours when utilizing VR-based applications for collaborative work. An appropriate 4D-based planning method in a networked VR based environment is the key to gaining a technical advancement and this approach to distributed collaborative planning tends to promote computer-supported collaborative work (CSCW). Subsequently, probing suitable CSCW design and user interface/interaction (UI) design are imperative for solutions to achieve successful applicability. Based on the foregoing, this study developed a novel robust 4D planning approach for networked construction planning. The new method of interactive definition was devised through theoretical analysis of human-computer interaction (HCI) studies, a comparison of existing 4D CAD creation, and 3D model based construction planning. It was created to support not only individual planners’ work but multidisciplinary planners’ collaboration, and lead to interactive and dynamic development of a 4D simulation. From a social perspective, the method clarified and highlighted relevant CSCW design to enhance collaboration. Applying this rationale, the study specified and implemented a distributed groupware solution for collaborative 4D construction planning. Based on a developed system architecture, application mode and dataflow, as well as a real-time data exchange protocol, a prototype system entitled ‘4DX’ was implemented which provides a platform for distributed multidisciplinary planners to perform real-time collaborative 4D construction planning. The implemented toolkit targeted a semi-immersive VR platform for enhanced usability with compatibility of desktop VR. For the purpose of obtaining optimal UI design of this kind of VR solution, the research implemented a new user-centred design (UCD) framework of Taguchi-Compliant User-Centred Design (TC-UCD) by adapting and adopting the Taguchi philosophy and current UCD framework. As a result, a series of UIs of the VR-based solution for multifactor usability evaluation and optimization were developed leading to a VR-based solution with optimal UIs. The final distributed VR solution was validated in a truly geographically dispersed condition. Findings from the verification testing, the validation, and the feedback from construction professionals proved positive in addition to providing constructive suggestions to further reinforce the applicability of the approach in the future.
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Regmi, Hem Kanta. "A Real-Time Computational Decision Support System for Compounded Sterile Preparations using Image Processing and Artificial Neural Networks." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469113622.

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Santos, Tim dos [Verfasser]. "New approaches in user-centric job monitoring on the LHC Computing Grid : Application of remote debugging and real time data selection techniques / Tim dos Santos." Wuppertal : Universitätsbibliothek Wuppertal, 2011. http://d-nb.info/101400179X/34.

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Munawar, Adnan. "An Asynchronous Simulation Framework for Multi-User Interactive Collaboration: Application to Robot-Assisted Surgery." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-dissertations/566.

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The field of surgery is continually evolving as there is always room for improvement in the post-operative health of the patient as well as the comfort of the Operating Room (OR) team. While the success of surgery is contingent upon the skills of the surgeon and the OR team, the use of specialized robots has shown to improve surgery-related outcomes in some cases. These outcomes are currently measured using a wide variety of metrics that include patient pain and recovery, surgeon’s comfort, duration of the operation and the cost of the procedure. There is a need for additional research to better understand the optimal criteria for benchmarking surgical performance. Presently, surgeons are trained to perform robot-assisted surgeries using interactive simulators. However, in the absence of well-defined performance standards, these simulators focus primarily on the simulation of the operative scene and not the complexities associated with multiple inputs to a real-world surgical procedure. Because interactive simulators are typically designed for specific robots that perform a small number of tasks controlled by a single user, they are inflexible in terms of their portability to different robots and the inclusion of multiple operators (e.g., nurses, medical assistants). Additionally, while most simulators provide high-quality visuals, simplification techniques are often employed to avoid stability issues for physics computation, contact dynamics and multi-manual interaction. This study addresses the limitations of existing simulators by outlining various specifications required to develop techniques that mimic real-world interactions and collaboration. Moreover, this study focuses on the inclusion of distributed control, shared task allocation and assistive feedback -- through machine learning, secondary and tertiary operators -- alongside the primary human operator.
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Ericsson, Duffy Mikael. "DRAWN TO LIFE: Exploring real-time manipulation of the digitally represented surface in comics on smartphones and tablets." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23439.

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This research thesis is an exploration into what possibilities lie beyond the representation of analog material when it transcends into the digital realm. Specifically, how printed comics can be altered in realtime by creator- allowed user interaction, when adapted for presentation within the digital sphere of mobile smartphones and computer tablets. Using legacy computer-game techniques like parallax scrolling with modern digital layer filters, device sensors and applying them in realtime to the comic creators digitally layered content, alternative forms of presentation arise.This is an investigation into the comic creator’s will of allowing possibilities of added depth perception, interactivity and alternative visual narratives in their comic, manga or graphic novels when employing new techniques based on sensor data input from a reader, like accelerometer-, gyroscope- or eye-tracking sensors. Several different techniques are evaluated. The focus is mainly on the context of creators of comics or manga who use digital tools and layer compositions when producing their work. Several aspects of the user-centered experience are also explored.Although mainly an interaction design project, most of the design methods are used from a service design approach, emphasizing co-design techniques like interviews, observations and user tests. The results are digital prototypes and proof-of-concepts featuring technology tests that support final design conclusions.The results will show both enthusiasm and reluctance from test subjects towards the new technologies presented. The professional craft of comic, manga and graphic novel creation has a deeply rooted aesthetic and production cycle in its history of the printed form. It could be difficult to alter its standard, reverence and nostalgia in the eyes of its readers and creators, when pursuing the digital format and narrative possibilities of the future. A video explaining the project’s “Drawn To Life” technology is available online.
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Mahammad, Sarfaraz Ahmad, and Vendrapu Sushma. "Raspberry Pi Based Vision System for Foreign Object Debris (FOD) Detection." Thesis, Blekinge Tekniska Högskola, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20198.

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Background: The main purpose of this research is to design and develop a cost-effective system for detection of Foreign Object Debris (FOD), dedicated to airports. FOD detection has been a significant problem at airports as it can cause damage to aircraft. Developing such a device to detect FOD may require complicated hardware and software structures. The proposed solution is based on a computer vision system, which comprises of flexible off the shelf components such as a Raspberry Pi and Camera Module, allowing the simplistic and efficient way to detect FOD. Methods: The solution to this research is achieved through User-centered design, which implies to design a system solution suitably and efficiently. The system solution specifications, objectives and limitations are derived from this User-centered design. The possible technologies are concluded from the required functionalities and constraints to obtain a real-time efficient FOD detection system. Results: The results are obtained using background subtraction for FOD detection and implementation of SSD (single-shot multi-box detector) model for FOD classification. The performance evaluation of the system is analysed by testing the system to detect FOD of different size for different distances. The web design is also implemented to notify the user in real-time when there is an occurrence of FOD. Conclusions: We concluded that the background subtraction and SSD model are the most suitable algorithms for the solution design with Raspberry Pi to detect FOD in a real-time system. The system performs in real-time, giving the efficiency of 84% for detecting medium-sized FOD such as persons at a distance of 75 meters and 72% efficiency for detecting large-sized FOD such as cars at a distance of 125 meters, and the average frame per second (fps) that is the system ’s performance in recording and processing frames of the area required to detect FOD is 0.95.
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Giansiracusa, Michelangelo Antonio. "A secure infrastructural strategy for safe autonomous mobile agents." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16052/1/Michaelangelo_Giansiracusa_Thesis.pdf.

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Portable languages and distributed paradigms have driven a wave of new applications and processing models. One of the most promising, certainly from its early marketing, but disappointing (from its limited uptake)is the mobile agent execution and data processing model. Mobile agents are autonomous programs which can move around a heterogeneous network such as the Internet, crossing through a number of different security domains, and perform some work at each visited destination as partial completion of a mission for their agent user. Despite their promise as a technology and paradigm to drive global electronic services (i.e.any Internet-driven-and-delivered service, not solely e-commerce related activities), their up take on the Internet has been very limited. Chief among the reasons for the paradigm's practical under-achievement is there is no ubiquitous frame work for using Internet mobile agents, and non-trivial security concerns abound for the two major stake holders (mobile agent users and mobile agent platform owners). While both stake holders have security concerns with the dangers of the mobile agent processing model, most investigators in the field are of the opinion that protecting mobile agents from malicious agent platforms is more problematic than protecting agent platforms from malicious mobile agents. Traditional cryptographic mechanisms are not well-suited to counter the bulk of the threats associated with the mobile agent paradigm due to the untrusted hosting of an agent and its intended autonomous, flexible movement and processing. In our investigation, we identified that the large majority of the research undertaken on mobile agent security to date has taken a micro-level perspective. By this we mean research focused solely on either of the two major stakeholders, and even then often only on improving measures to address one security issue dear to the stake holder - for example mobile agent privacy (for agent users) or access control to platform resources (for mobile agent platform owners). We decided to take a more encompassing, higher-level approach in tackling mobile agent security issues. In this endeavour, we developed the beginnings of an infrastructural-approach to not only reduce the security concerns of both major stakeholders, but bring them transparently to a working relationship. Strategic utilisation of both existing distributed system trusted-third parties (TTPs) and novel mobile agent paradigm-specific TTPs are fundamental in the infrastructural framework we have devised. Besides designing an application and language independent frame work for supporting a large-scale Internet mobile agent network, our Mobile Agent Secure Hub Infrastructure (MASHIn) proposal encompasses support for flexible access control to agent platform resources. A reliable means to track the location and processing times of autonomous Internet mobile agents is discussed, withfault-tolerant handling support to work around unexpected processing delays. Secure,highly-effective (incomparison to existing mechanisms) strategies for providing mobile agent privacy, execution integrity, and stake holder confidence scores were devised - all which fit comfortably within the MASHIn framework. We have deliberately considered the interests - withoutbias -of both stake holders when designing our solutions. In relation to mobile agent execution integrity, we devised a new criteria for assessing the robustness of existing execution integrity schemes. Whilst none of the existing schemes analysed met a large number of our desired properties for a robust scheme, we identified that the objectives of Hohl's reference states scheme were most admirable - particularly real - time in - mission execution integrity checking. Subsequently, we revised Hohl's reference states protocols to fit in the MASHIn framework, and were able to overcome not only the two major limitations identified in his scheme, but also meet all of our desired properties for a robust execution integrity scheme (given an acceptable decrease in processing effiency). The MASHIn offers a promising new perspective for future mobile agent security research and indeed a new frame work for enabling safe and autonomous Internet mobile agents. Just as an economy cannot thrive without diligent care given to micro and macro-level issues, we do not see the security prospects of mobile agents (and ultimately the prospects of the mobile agent paradigm) advancing without diligent research on both levels.
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48

Giansiracusa, Michelangelo Antonio. "A Secure Infrastructural Strategy for Safe Autonomous Mobile Agents." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16052/.

Full text
Abstract:
Portable languages and distributed paradigms have driven a wave of new applications and processing models. One of the most promising, certainly from its early marketing, but disappointing (from its limited uptake)is the mobile agent execution and data processing model. Mobile agents are autonomous programs which can move around a heterogeneous network such as the Internet, crossing through a number of different security domains, and perform some work at each visited destination as partial completion of a mission for their agent user. Despite their promise as a technology and paradigm to drive global electronic services (i.e.any Internet-driven-and-delivered service, not solely e-commerce related activities), their up take on the Internet has been very limited. Chief among the reasons for the paradigm's practical under-achievement is there is no ubiquitous frame work for using Internet mobile agents, and non-trivial security concerns abound for the two major stake holders (mobile agent users and mobile agent platform owners). While both stake holders have security concerns with the dangers of the mobile agent processing model, most investigators in the field are of the opinion that protecting mobile agents from malicious agent platforms is more problematic than protecting agent platforms from malicious mobile agents. Traditional cryptographic mechanisms are not well-suited to counter the bulk of the threats associated with the mobile agent paradigm due to the untrusted hosting of an agent and its intended autonomous, flexible movement and processing. In our investigation, we identified that the large majority of the research undertaken on mobile agent security to date has taken a micro-level perspective. By this we mean research focused solely on either of the two major stakeholders, and even then often only on improving measures to address one security issue dear to the stake holder - for example mobile agent privacy (for agent users) or access control to platform resources (for mobile agent platform owners). We decided to take a more encompassing, higher-level approach in tackling mobile agent security issues. In this endeavour, we developed the beginnings of an infrastructural-approach to not only reduce the security concerns of both major stakeholders, but bring them transparently to a working relationship. Strategic utilisation of both existing distributed system trusted-third parties (TTPs) and novel mobile agent paradigm-specific TTPs are fundamental in the infrastructural framework we have devised. Besides designing an application and language independent frame work for supporting a large-scale Internet mobile agent network, our Mobile Agent Secure Hub Infrastructure (MASHIn) proposal encompasses support for flexible access control to agent platform resources. A reliable means to track the location and processing times of autonomous Internet mobile agents is discussed, withfault-tolerant handling support to work around unexpected processing delays. Secure,highly-effective (incomparison to existing mechanisms) strategies for providing mobile agent privacy, execution integrity, and stake holder confidence scores were devised - all which fit comfortably within the MASHIn framework. We have deliberately considered the interests - withoutbias -of both stake holders when designing our solutions. In relation to mobile agent execution integrity, we devised a new criteria for assessing the robustness of existing execution integrity schemes. Whilst none of the existing schemes analysed met a large number of our desired properties for a robust scheme, we identified that the objectives of Hohl's reference states scheme were most admirable - particularly real - time in - mission execution integrity checking. Subsequently, we revised Hohl's reference states protocols to fit in the MASHIn framework, and were able to overcome not only the two major limitations identified in his scheme, but also meet all of our desired properties for a robust execution integrity scheme (given an acceptable decrease in processing effiency). The MASHIn offers a promising new perspective for future mobile agent security research and indeed a new frame work for enabling safe and autonomous Internet mobile agents. Just as an economy cannot thrive without diligent care given to micro and macro-level issues, we do not see the security prospects of mobile agents (and ultimately the prospects of the mobile agent paradigm) advancing without diligent research on both levels.
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49

Jap, Lilian. "Mapping detected periodic dance movements to control tempo in the music playback of Electronic Dance Music." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-251668.

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Abstract:
Engaging in the music set of one’s favorite artist or DJ is oftentimes leading to the result of a powerful and euphoric felt experience, a sensation partly also induced from dancing in beat to the music. In an attempt to simulate a similar dance experience, a user-study was designed in order to investigate when a user is let to dance in rhythm to a music playback and in addition, in control of a music playback tempo through the induced dance movements. A proof-of-concept prototype was built and tested in an initial study, followed by a main study where the prototype had been modified and 12 participants participated. A questionnaire was given containing various question statements to be rated through a Likert-scale regarding their subjective experience. Open-ended questions were also included to collect their own opinions. From the results, an enhanced engagement and enjoyment of the music could be identified when being able to manipulate the tempo.
Att engagera sig i ett musikset av ens favoritartist eller DJ leder ofta till resultatet av en kraftfull och euforisk känsloupplevelse, en känsla delvis framkallat av att man dansar i takt med musiken. I ett försök att simulera en liknande dansupplevelse undersöker denna användarstudie när en användare dansar i rytm till musik och dessutom är i kontroll av tempot genom de skapade dansrörelserna. En proof-of-concept prototyp konstruerades och testades i en första studie, följt av en huvudstudie där prototypen hade modifierats och 12 deltagare deltog. Ett frågeformulär gavs med olika frågor som skulle bedömas via en Likert-skala, med avseende på deras subjektiva erfarenhet. Öppna frågor ingick också för att samla deras egna åsikter. Från resultaten kunde ett ökat engagemang och en förhöjd njutning av musiken identifieras när man kunde manipulera tempot.
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50

Sao, Pedro Michael A. "Real-time Assessment, Prediction, and Scaffolding of Middle School Students’ Data Collection Skills within Physical Science Simulations." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/168.

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Abstract:
Despite widespread recognition by science educators, researchers and K-12 frameworks that scientific inquiry should be an essential part of science education, typical classrooms and assessments still emphasize rote vocabulary, facts, and formulas. One of several reasons for this is that the rigorous assessment of complex inquiry skills is still in its infancy. Though progress has been made, there are still many challenges that hinder inquiry from being assessed in a meaningful, scalable, reliable and timely manner. To address some of these challenges and to realize the possibility of formative assessment of inquiry, we describe a novel approach for evaluating, tracking, and scaffolding inquiry process skills. These skills are demonstrated as students experiment with computer-based simulations. In this work, we focus on two skills related to data collection, designing controlled experiments and testing stated hypotheses. Central to this approach is the use and extension of techniques developed in the Intelligent Tutoring Systems and Educational Data Mining communities to handle the variety of ways in which students can demonstrate skills. To evaluate students' skills, we iteratively developed data-mined models (detectors) that can discern when students test their articulated hypotheses and design controlled experiments. To aggregate and track students' developing latent skill across activities, we use and extend the Bayesian Knowledge-Tracing framework (Corbett & Anderson, 1995). As part of this work, we directly address the scalability and reliability of these models' predictions because we tested how well they predict for student data not used to build them. When doing so, we found that these models demonstrate the potential to scale because they can correctly evaluate and track students' inquiry skills. The ability to evaluate students' inquiry also enables the system to provide automated, individualized feedback to students as they experiment. As part of this work, we also describe an approach to provide such scaffolding to students. We also tested the efficacy of these scaffolds by conducting a study to determine how scaffolding impacts acquisition and transfer of skill across science topics. When doing so, we found that students who received scaffolding versus students who did not were better able to acquire skills in the topic in which they practiced, and also transfer skills to a second topic when was scaffolding removed. Our overall findings suggest that computer-based simulations augmented with real-time feedback can be used to reliably measure the inquiry skills of interest and can help students learn how to demonstrate these skills. As such, our assessment approach and system as a whole shows promise as a way to formatively assess students' inquiry.
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