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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Parallelization of Entity-Based Models in Computational Social Science| A Hardware Perspective

Brearcliffe, Dale K. 31 March 2018 (has links)
<p> The use of simulations by social scientists in exploring theories and hypotheses is well documented. As computer systems have grown in capacity, so have interests of social scientists in executing larger simulations. Social scientists often approach their simulation design from the top down by selecting an Entity-Based Model (<b>EBM</b>) framework from those that are readily available, thus limiting modeling capability to the available frameworks. Ultimately, the framework is dependent upon what is at the bottom, the hardware architecture that serves as the foundation of the computing system. Parallel hardware architecture supports the simultaneous execution of a problem split into multiple pieces. Thus, the problem is solved faster in parallel. In this thesis, a selection of parallel hardware architectures is examined with a goal of providing support for EBMs. The hardware's capability to support parallelization of EBMs is described and contrasted. A simple EBM is tested to illustrate these capabilities and implementation challenges specific to parallel hardware are explored. The results of this research offer social scientists better informed choices than the sequential EBM frameworks that currently exist. Matching the model to the correct supporting hardware will permit larger scale problems to be examined and expands the range of models that a social scientist can explore.</p><p>
2

Navigating Instruction, Interface, and Sociality in Participatory Network Music

Kappes, Greg 08 June 2018 (has links)
<p> This thesis is a discussion and analysis of the piece I presented at Signal Flow, the graduate music festival at Mills College, on March 8th, 2018 called pls don&rsquo;t(!) silence ur cellphones. This analysis will be punctuated with various theoretical asides meant to shed light on different aspects of the work and to present a clearer view of my own artistic mission. Since one of the hardest parts of doing work similar to mine is finding the right ways to do it, I hope this paper will at least serve as a resource for those with similar goals. In the spirit of open source, I want the tools and the processes to be as transparent as possible in order to encourage other artists and to expand a now relatively small community. My piece uses only the audience&rsquo;s cellphones as sound sources. I use a centrally-located projected display supplemented by the cellphone displays themselves to choreograph the audience&rsquo;s movements around the space. The piece aims to encourage interesting, fulfilling interactions for the audience while producing a complex sonic result through these interactions. In doing this, there arose many intersecting (and often extramusical) concerns and issues that I needed to address. This paper then serves largely to examine the failures and successes of this pursuit in the hopes of outlining future directions for the project. For this piece, audience members are invited to log onto a website on their cellphone. This website contains a brief set of instructions as well as a &ldquo;start&rdquo; button which, when pressed, activates a Web Audio app which produces sound. Each phone then basically becomes a mobile speaker in a large speaker array composed of the aggregate of all of the audience members&rsquo; phones. The interface on the phones is intentionally spare and minimal in order to encourage audience members to keep their focus elsewhere; it merely displays a solid block of color indicating which group the audience member belongs to at different parts of the piece and flashes white briefly when a new instruction is sent out. The main interface which all audience members react to is a projected image which acts as a sort of topographical map of the performance space. The audience is directed through a sequence of different spatial orientations which are accompanied by changes in the sonic material presented on their phones. The main goals of the piece are 1) to quickly and cheaply create an accessible &ldquo;high-tech&rdquo; listening experience, 2) to encourage and foster social contact (while problematizing and questioning the role of instruction and suggestion), and 3) to present various compositional ideas which are inherent to the work&rsquo;s form and sonic affect.</p><p>

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