409 research outputs found

    Optimisation of Mobile Communication Networks - OMCO NET

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    The mini conference “Optimisation of Mobile Communication Networks” focuses on advanced methods for search and optimisation applied to wireless communication networks. It is sponsored by Research & Enterprise Fund Southampton Solent University. The conference strives to widen knowledge on advanced search methods capable of optimisation of wireless communications networks. The aim is to provide a forum for exchange of recent knowledge, new ideas and trends in this progressive and challenging area. The conference will popularise new successful approaches on resolving hard tasks such as minimisation of transmit power, cooperative and optimal routing

    Introduction to the Minitrack on Performing Game Development Live on Twitch

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    This study is a preliminary exploration of how professional game developers live stream their creative work on Twitch.tv. It asks how and in what ways these developers engage in co-creative acts with their viewers and how they engage in game talk in their design process. It further analyzes discourse about the act of streaming development as presented in professional and popular journalistic and personal sites online

    Performing Game Development Live on Twitch

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    This study is a preliminary exploration of how professional game developers live stream their creative work on Twitch.tv. It asks how and in what ways these developers engage in co-creative acts with their viewers and how they engage in game talk in their design process. It further analyzes discourse about the act of streaming development as presented in professional and popular journalistic and personal sites online

    Florida Technological University, Course Descriptions, Bulletin Supplement, January 1974

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    FTU course descriptions, effective January 1974. This booklet supersedes the listing shown in the 1973-1974 bulletin

    Florida Technological University: Course Descriptions, Bulletin Supplement, Fall 1971

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    Fall 1971 Course Descriptions. This booklet supersedes the listing shown in the July 1971 Bulletin

    Personal and groupwise broadcasting system for social event networking

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    Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2008.Page 155 blank.Includes bibliographical references (p. 149-154).This thesis describes the design and development of a system that is aimed for personalized and group-wise broadcasts to collaboratively distribute information and to coordinate locally created events in infrastructure-free milieu. This system, called XCast, has two targets: One is to permit people to create personalized communicators, "broadcast stations" over mobile devices, for extemporaneous events or individually motivated presentations. The other is to provide people with a cognitive platform for social event awareness that informs what is happening around them and then timely coordinates the events. This system applies wireless/mobile peer-to-peer networking technologies, such as 802.11 ad-hoc and mesh networking. To achieve the targets, in the thesis, we focus on newly designing architecture of the cognitive platform and then developing a robust and agile protocol which makes it possible for the platform to reliably work in wireless ad-hoc/mesh networks. The former work is to build a group of broadcast stations into a distributed crystal-gazing system to be aware seasonably of what is going on in our surroundings. With respect to the latter, we propose a distributed protocol, dubbed "Broadcast Resource Schedule Protocol (BRSP)." It has broadcast operations more reliable and scalable in wireless ad-hoc/mesh networks via synchronization and neighbor knowledge schemes. In the end, the BRSP evolves a wireless peer-to-peer network into a cognitive network to support the platform. This system offers a riper breeding ground for creation of a platform for social event networking and of cooperative media for a local community. The value of this is in considering community networks that are matrices of social collaboration, rather than point connections, as well as sources of novel civic media initiated by grassroots.by Sung-Hyuck Lee.S.M

    A hybrid method for impulse response measurements with synthesized musical tones and Masked-MLS Stimuli

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    Impulse responses or transfer functions are descriptions of acoustic and audio transmission channels, which completely characterise point-to-point propagation of sound in room acoustics or input-output relationships of linear systems in electroacoustics. Measurements of impulse responses or transfer functions are routinely carried out first to determine critical room acoustics parameters of enclosures such as concert halls, theatres and auditoria, or technical specification of electroacoustic transducers, i.e. loudspeakers and microphones. In room acoustics measurements, tradition techniques employ noisy testing signals as probe stimuli, which are unpleasant and intolerable to audiences. This hinders occupied measurements to be taken in many cases. Predicted in-use parameters from unoccupied measurements are known to be unreliable and problematic. It is also well appreciated in room acoustics research community that the use of musical or music-masked probe stimuli can mitigate problems of occupied measurements. It is therefore hypothesised as a starting point of this thesis that the use of musical tone like stimuli or musically masked testing signals can be used to determine impulse responses or transfer functions. Based on the above hypothesis, this thesis develops a new hybrid technique, in which narrow band linear chirps, called “presto-chirps” centred on musical notes are used to measure impulse responses in low to mid frequency bands, and music-masked maximum-length-sequences are deployed to obtain those in higher frequency bands. Broadband impulse responses are then obtained by combining the measured lower and higher frequency impulse responses. To test the hypothesis and identify the potential and limitations of the developed technique, mathematical formulation and analysis, computer simulations and real room measurements have been carried out and documented in this thesis. Investigation results show that purposely tailored and windowed narrow chirps that emulate musical tones can be used as probe stimuli to measure impulse responses or transfer functions with an uncompromised accuracy. It is found that Hanning windows are almost optimal for this application. This method covers frequency ranges commonly quoted in room acoustics investigations. Music-masked maximum-length sequences are found to be able to obtain in impulse responses or transfer functions in higher frequency. However, if completely masked stimuli are sought, the resulted signal to noise ratios in the measurements is limited, or the required averaging is going to be overly prolonged. Nevertheless, the masking music can still potentially be used as a distracter to make the audience more forgiving to the hissing noise from maximum length sequences, facilitating the occupied measurements
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