Tangible interfaces for manipulating aggregates of digital information

Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2002.Includes bibliographical references (p. 255-269).This thesis develops new approaches for people to physically represent and interact with aggregates of digital information. These support the concept of Tangible User Interfaces (TUIs), a genre of human-computer interaction that uses spatially reconfigurable physical objects as representations and controls for digital information. The thesis supports the manipulation of information aggregates through systems of physical tokens and constraints. In these interfaces, physical tokens act as containers and parameters for referencing digital information elements and aggregates. Physical constraints are then used to map structured compositions of tokens onto a variety of computational interpretations. This approach is supported through the design and implementation of several systems. The mediaBlocks system enables people to use physical blocks to "copy and paste" digital media between specialized devices and general-purpose computers, and to physically compose and edit this content (e.g., to build multimedia presentations). This system also contributes new tangible interface techniques for binding, aggregating, and disaggregating sequences of digital information into physical objects.(cont.) Tangible query interfaces allow people to physically express and manipulate database queries. This system demonstrates ways in which tangible interfaces can manipulate larger aggregates of information. One of these query approaches has been evaluated in a user study, which has compared favorably with a best-practice graphical interface alternative. These projects are used to support the claim that physically constrained tokens can provide an effective approach for interacting with aggregates of digital information.by Brygg Anders Ullmer.Ph.D

AutoGraff: towards a computational understanding of graffiti writing and related art forms.

The aim of this thesis is to develop a system that generates letters and pictures with a style that is immediately recognizable as graffiti art or calligraphy. The proposed system can be used similarly to, and in tight integration with, conventional computer-aided geometric design tools and can be used to generate synthetic graffiti content for urban environments in games and in movies, and to guide robotic or fabrication systems that can materialise the output of the system with physical drawing media. The thesis is divided into two main parts. The first part describes a set of stroke primitives, building blocks that can be combined to generate different designs that resemble graffiti or calligraphy. These primitives mimic the process typically used to design graffiti letters and exploit well known principles of motor control to model the way in which an artist moves when incrementally tracing stylised letter forms. The second part demonstrates how these stroke primitives can be automatically recovered from input geometry defined in vector form, such as the digitised traces of writing made by a user, or the glyph outlines in a font. This procedure converts the input geometry into a seed that can be transformed into a variety of calligraphic and graffiti stylisations, which depend on parametric variations of the strokes

Third International Symposium on Artificial Intelligence, Robotics, and Automation for Space 1994

The Third International Symposium on Artificial Intelligence, Robotics, and Automation for Space (i-SAIRAS 94), held October 18-20, 1994, in Pasadena, California, was jointly sponsored by NASA, ESA, and Japan's National Space Development Agency, and was hosted by the Jet Propulsion Laboratory (JPL) of the California Institute of Technology. i-SAIRAS 94 featured presentations covering a variety of technical and programmatic topics, ranging from underlying basic technology to specific applications of artificial intelligence and robotics to space missions. i-SAIRAS 94 featured a special workshop on planning and scheduling and provided scientists, engineers, and managers with the opportunity to exchange theoretical ideas, practical results, and program plans in such areas as space mission control, space vehicle processing, data analysis, autonomous spacecraft, space robots and rovers, satellite servicing, and intelligent instruments

Digital Interaction and Machine Intelligence

This book is open access, which means that you have free and unlimited access. This book presents the Proceedings of the 9th Machine Intelligence and Digital Interaction Conference. Significant progress in the development of artificial intelligence (AI) and its wider use in many interactive products are quickly transforming further areas of our life, which results in the emergence of various new social phenomena. Many countries have been making efforts to understand these phenomena and find answers on how to put the development of artificial intelligence on the right track to support the common good of people and societies. These attempts require interdisciplinary actions, covering not only science disciplines involved in the development of artificial intelligence and human-computer interaction but also close cooperation between researchers and practitioners. For this reason, the main goal of the MIDI conference held on 9-10.12.2021 as a virtual event is to integrate two, until recently, independent fields of research in computer science: broadly understood artificial intelligence and human-technology interaction

Models and Modelling between Digital and Humanities: A Multidisciplinary Perspective

This Supplement of Historical Social Research stems from the contributions on the topic of modelling presented at the workshop “Thinking in Practice”, held at Wahn Manor House in Cologne on January 19-20, 2017. With Digital Humanities as starting point, practical examples of model building from different disciplines are considered, with the aim of contributing to the dialogue on modelling from several perspectives. Combined with theoretical considerations, this collection illustrates how the process of modelling is one of coming to know, in which the purpose of each modelling activity and the form in which models are expressed has to be taken into consideration in tandem. The modelling processes presented in this volume belong to specific traditions of scholarly and practical thinking as well as to specific contexts of production and use of models. The claim that supported the project workshop was indeed that establishing connections between different traditions of and approaches toward modelling is vital, whether these connections are complementary or intersectional. The workshop proceedings address an underpinning goal of the research project itself, namely that of examining the nature of the epistemological questions in the different traditions and how they relate to the nature of the modelled objects and the models being created. This collection is an attempt to move beyond simple representational views on modelling in order to understand modelling processes as scholarly and cultural phenomena as such

Three Risky Decades: A Time for Econophysics?

Our Special Issue we publish at a turning point, which we have not dealt with since World War II. The interconnected long-term global shocks such as the coronavirus pandemic, the war in Ukraine, and catastrophic climate change have imposed significant humanitary, socio-economic, political, and environmental restrictions on the globalization process and all aspects of economic and social life including the existence of individual people. The planet is trapped—the current situation seems to be the prelude to an apocalypse whose long-term effects we will have for decades. Therefore, it urgently requires a concept of the planet's survival to be built—only on this basis can the conditions for its development be created. The Special Issue gives evidence of the state of econophysics before the current situation. Therefore, it can provide excellent econophysics or an inter-and cross-disciplinary starting point of a rational approach to a new era

Patterns of Foraminiferal Micro-evolution and Enviromental Change in the Lower Chalk

The research tests Sheldon's Plus ҫa change model by tracking a single fossil lineage through a succession of marine environments showing geological-scale differences in background stability. Orbitally driven cyclic sediments of Cenomanian age, predominantly recording a 20 kyr precessional shift, provide both the time-frame and the main engine of environmental variability, although transgressive pulses and other events are also superimposed. The cyclicity provides spectacular geographical and temporal control,, allowing a million-year sequence to be sampled at 100 kyr intervals at three laterally adjacent sites, and partially sampled at 20 kyr and 2 kyr intervals at one of these sites. The lineage of interest is a benthic agglutinated foraminiferan, Tritaxia pyramidata, which occurs in prolific numbers; additional ecological evidence comes from a large microfossil database recovered from the same samples. The Lower Chalk benthic microfauna have very stable patterns of relative abundance, with the same species occurring in similar proportions for at least a million years. Analysis of Tritaxia's ecology identifies it as an r-selected generalist playing a keystone role in the community. During development, Tritaxia exhibits a persistent tendency to uncoil, but this tendency is strongly manifest only after average life expectancy, leading to its interpretation as a construction mistake rather than a product of design. This developmental quirk sheds light on the grain and texture of the morphospace through which Tritaxia is forced to navigate, significantly limiting its evolutionary potential. The result is a lineage that achieves a million years' worth of wobbly stasis, largely because it is boxed into a small corner of morphospace by the joint influence of a narrow developmental channel and competitive interference from other species. The dynamics, of this process predominantly support the Plus ҫa change model, even though not all the predicted patterns are found

Structure and Proper Orthogonal Decomposition in Simulations of Wall-Bounded Turbulent Shear Flows with Canonical Geometries

abstract: Structural features of canonical wall-bounded turbulent flows are described using several techniques, including proper orthogonal decomposition (POD). The canonical wall-bounded turbulent flows of channels, pipes, and flat-plate boundary layers include physics important to a wide variety of practical fluid flows with a minimum of geometric complications. Yet, significant questions remain for their turbulent motions' form, organization to compose very long motions, and relationship to vortical structures. POD extracts highly energetic structures from flow fields and is one tool to further understand the turbulence physics. A variety of direct numerical simulations provide velocity fields suitable for detailed analysis. Since POD modes require significant interpretation, this study begins with wall-normal, one-dimensional POD for a set of turbulent channel flows. Important features of the modes and their scaling are interpreted in light of flow physics, also leading to a method of synthesizing one-dimensional POD modes. Properties of a pipe flow simulation are then studied via several methods. The presence of very long streamwise motions is assessed using a number of statistical quantities, including energy spectra, which are compared to experiments. Further properties of energy spectra, including their relation to fictitious forces associated with mean Reynolds stress, are considered in depth. After reviewing salient features of turbulent structures previously observed in relevant experiments, structures in the pipe flow are examined in greater detail. A variety of methods reveal organization patterns of structures in instantaneous fields and their associated vortical structures. Properties of POD modes for a boundary layer flow are considered. Finally, very wide modes that occur when computing POD modes in all three canonical flows are compared. The results demonstrate that POD extracts structures relevant to characterizing wall-bounded turbulent flows. However, significant care is necessary in interpreting POD results, for which modes can be categorized according to their self-similarity. Additional analysis techniques reveal the organization of smaller motions in characteristic patterns to compose very long motions in pipe flows. The very large scale motions are observed to contribute large fractions of turbulent kinetic energy and Reynolds stress. The associated vortical structures possess characteristics of hairpins, but are commonly distorted from pristine hairpin geometries.Dissertation/ThesisPh.D. Mechanical Engineering 201

Cross-linguistic variation of /s/ as an index of non-normative sexual orientation and masculinity in French and German men

This thesis examines phonetic variation of /s/ in bilingual French and German gay and straight men. Previous studies have shown sibilant variation, specifically the voiceless sibilant /s/, to correlate with constructions of gay identity and ‘gay sounding voices’ in both production and perception. While most of this work concerns English, researchers have also explored /s/ variation and sexual orientation or non-normative masculinity in Afrikaans, Danish, Hungarian, and Spanish. Importantly, with the exception of only a small number of studies, this body of work has largely left the realm of /s/ variation and sexual orientation in bilingual speakers unexplored, and furthermore there is very little work which examines these voices in the context of French and German. The analyses show that some gay French and German men produce /s/ with a higher centre of gravity (CoG) and more negative skew than the straight speakers of the study, a result which dovetails with previous studies in languages such as English. Unlike English however, French and German listeners do not appear to associate /s/ variation with sexual orientation or (non)normative masculinities. I argue that the gay speakers who produce /s/ with a higher CoG than the other speakers of the study are doing so as a way to distance themselves from hegemonic masculinity. This thesis is structured into three stand-alone journal articles bookended with introductory and conclusion chapters which tie them together in the broader picture of /s/ variation and French/German speakers and listeners. The first of the three articles expands upon the previously established linguistic framework of indexing gayness by exploring /s/ variation in native and non-native speech, examining how the linguistic construction of gay identity interacts between their English production and the constraints of their native language. The data draws on read speech of 19 gay and straight French and German men across their L1 and L2 English to explore the social meaning of /s/. Results show that some gay speakers produce /s/ with a higher centre of gravity (CoG) and more negative skew than the straight speakers. These results are consistent with previous findings, which show sibilant variation to index sexual orientation in monolingual gay men’s speech, and provide evidence of this feature correlating with sexual orientation in French and German. Furthermore, the results presented here call for a greater level of inquiry into how the gay speakers who employ this feature construct their gay identities beyond a purely gay/straight dichotomy. The second study reports the results of a cross-linguistic matched guise test examining the role of /s/ variation and pitch in judgements of sexual orientation and non-normative masculinity in English, French, and German listeners. Listeners responded to manipulations of /s/ and pitch in their native language and all other stimuli languages (English, French, German, and Estonian). All listener groups rate higher pitch stimuli as more gay and more effeminate sounding than lower pitch guises. However, only the English listeners hear [s+] guises as sounding more gay and more effeminate than the [s] or [s-] guises. This effect is seen not only in their native language, but across all stimuli languages. French and German listeners, despite previous evidence showing /s/ to vary according to sexual orientation in men’s speech, do not hear [s+] guises as more gay or more effeminate in any of the stimuli languages including their native French or German. The final of the three articles takes the findings of the first two papers and attempts to reconcile the production/perception mismatch seen when comparing the results of the first two papers. The first article in this thesis revealed two groups of speakers which form the basis for analysis for this paper. The first group is a heterogeneous group of gay and straight speakers whose average /s/ productions are below 7,000 Hz ([s] speakers) and the second is a homogeneous group of gay speakers producing average /s/ CoG above 7,000 Hz ([s+] speakers). The analysis shows style shifting across task type with both groups of speakers producing higher /s/ CoG productions in L1 read speech contexts than any of the L2 speech contexts. Style shifting across conversation topic reveals that the [s+] speakers are producing higher /s/ CoG when discussing their coming out stories and topics of LGBT involvement. I argue that these [s+] speakers are employing these higher frequency /s/ variants to construct a very specific and identifiable gay persona, that of a counter-hegemonic effeminate gay man. This thesis is among the first to examine phonetic qualities of gay bilingual speakers and the ways in which they may index their sexual orientation. The inclusion of bilingual French and German speakers adds to our growing knowledge of ways in which these individuals navigate and construct their identities within both their L1 and, specifically, within an L2. In this regard, this thesis contributes to the growing body of knowledge concerning socioindexicality in L2 production more generally. This work thus speaks to these gaps within the sociolinguistic literature and provides strong evidence that /s/ variation is a valuable resource for some French and German men in the construction of a certain type of gay identity