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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

Situated Play

Rambusch, Jana January 2008 (has links)
<p>This thesis addresses computer game play activities from the perspective of embodied and situated cognition. From such a perspective, game play can be divided into the physical handling of the game and the players' understanding of it. Game play can also be described in terms of three different levels of situatedness "high-level" situatedness, the contextual "here and now", and "low-level" situatedness. Moreover, theoretical and empirical implications of such a perspective have been explored more in detail in two case studies.</p> / Report code: LiU-Tek-Lic-2008:17.
2

Notions of Embodiment in Cognitive Science

Svensson, Henrik January 2001 (has links)
<p>Cognitive science has traditionally viewed the mind as essentially disembodied, that is, the nature of mind and cognition is neither affected by the ¡Èsystem¡É it is implemented in nor affected by the environment that the system is situated in. But since the mid-1980s a new approach emerged in artificial intelligence that emphasized the importance of embodiment and situatedness and since then terms like embodied cognition, embodied intelligence have become more and more apparent in discussions of cognition. As embodied cognition has increased in interest so have the notions of embodiment and situatedness and they are not always compatible. This report has found that there are, at least, four notions of embodiment in the discussions of embodied cognition: software embodiment, physical embodiment, biological embodiment and human(oid) embodiment.</p>
3

Social Situatedness of Natural and Artificial Intelligence

Lindblom, Jessica January 2001 (has links)
<p>The situated approach in cognitive science and artificial intelligence (AI) has argued since the mid-1980s that intelligent behaviour emerges as a result of a close coupling between agent and environment. Lately, many researchers have emphasized that in addition to the physical environment, the social environment must not be neglected. In this thesis we will focus on the nature of social situatedness, and the aim of this dissertation is to investigate its role and relevance for natural and artificial intelligence.</p><p>This thesis brings together work from separate areas, presenting different perspectives on the role and mechanisms social situatedness. More specifically, we will analyse Vygotsky's cognitive development theory, studies of primate (and avian) intelligence, and last, but not least, work in contemporary socially situated AI. These, at a first glance, quite different fields have a lot in common since they particularly stress the importance of social embeddedness for the development of individual intelligence.</p><p>Combining these separate perspectives, we analyse the remaining differences between natural and artificial social situatedness. Our conclusion is that contemporary socially artificial intelligence research, although heavily inspired by empirical findings in human infants, tends to lack the developmental dimension of situatedness. Further we discuss some implications for research in cognitive science and AI.</p>
4

Social Situatedness of Natural and Artificial Intelligence

Lindblom, Jessica January 2001 (has links)
The situated approach in cognitive science and artificial intelligence (AI) has argued since the mid-1980s that intelligent behaviour emerges as a result of a close coupling between agent and environment. Lately, many researchers have emphasized that in addition to the physical environment, the social environment must not be neglected. In this thesis we will focus on the nature of social situatedness, and the aim of this dissertation is to investigate its role and relevance for natural and artificial intelligence. This thesis brings together work from separate areas, presenting different perspectives on the role and mechanisms social situatedness. More specifically, we will analyse Vygotsky's cognitive development theory, studies of primate (and avian) intelligence, and last, but not least, work in contemporary socially situated AI. These, at a first glance, quite different fields have a lot in common since they particularly stress the importance of social embeddedness for the development of individual intelligence. Combining these separate perspectives, we analyse the remaining differences between natural and artificial social situatedness. Our conclusion is that contemporary socially artificial intelligence research, although heavily inspired by empirical findings in human infants, tends to lack the developmental dimension of situatedness. Further we discuss some implications for research in cognitive science and AI.
5

Notions of Embodiment in Cognitive Science

Svensson, Henrik January 2001 (has links)
Cognitive science has traditionally viewed the mind as essentially disembodied, that is, the nature of mind and cognition is neither affected by the ¡Èsystem¡É it is implemented in nor affected by the environment that the system is situated in. But since the mid-1980s a new approach emerged in artificial intelligence that emphasized the importance of embodiment and situatedness and since then terms like embodied cognition, embodied intelligence have become more and more apparent in discussions of cognition. As embodied cognition has increased in interest so have the notions of embodiment and situatedness and they are not always compatible. This report has found that there are, at least, four notions of embodiment in the discussions of embodied cognition: software embodiment, physical embodiment, biological embodiment and human(oid) embodiment.
6

A methodology for situated and effective design of haptic devices

Sun, Xuan January 2017 (has links)
The realism of virtual surgery through a surgical simulator depends largely on the precision and reliability of the haptic device. The quality of perception depends on the design of the haptic device, which presents a complex design task due to the multi-criteria and conflicting character of the functional and performance requirements. In the model-based evaluation of the performance criteria of a haptic device, the required computational resources increase with the complexity of the device structure as well as with the increased level of detail that is created in the detail design phases. Due to uncertain requirements and a significant knowledge gap, the design task is fuzzy and more complex in the early design phases. The goal of this thesis is to propose a situated, i.e., flexible, scalable and efficient, methodology for multi-objective and multi-disciplinary design optimization of high-performing 6-DOF haptic devices. The main contributions of this thesis are: 1. A model-based and simulation-driven engineering design methodology and a flexible pilot framework are proposed for design optimization of high-performing haptic devices. The multi-disciplinary design optimization method was utilized to balance the conflicting criteria/requirements of a multi-domain design case and to solve the design optimization problems concurrently. 2. A multi-tool framework is proposed. The framework integrates metamodel-based design optimization with complementary engineering tools from different software vendors, which was shown to significantly reduce the total computationally effort. 3. The metamodeling methods and sampling sizes for specific performance indices found from case studies were shown to be applicable and usable for several kinds of 6-degrees-of-freedom haptic devices. 4. The multi-tool framework and the assisting methodology were further developed to enable computationally efficient and situated design multi-objective optimization of high-performing haptic devices. The design-of-experiment (DOE) and metamodeling techniques are integrated with the optimization process in the framework as an option to solve the design optimization case with a process that depends on the present system complexity. / <p>QC 20171108</p>
7

Situated Concepts and Pre-Linguistic Symbol Use

Türkmen, Ulas 07 June 2010 (has links)
In the recent decades, alternative notions regarding the role of symbols in intelligence in natural and artificial systems have attracted significant inter- est. The main difference of the so-called situated and embodied approaches to cognitive science from the traditional cognitivist position is that symbolic repre- sentations are viewed as resources, similar to maps used for navigation or plans for activity, instead of as transparent stand-ins in internal world models. Thus, all symbolic resources have to be interpreted and re-contextualized for use in concrete situations. In this view, one of the primary sources of such symbolic resources is language. Cognitivism views language as a vessel carrying informa- tion originally located in the processing mechanisms of the individual agents. Situated approaches, on the other hand, view language both as a communicative mechanism and as a means for the individual agents to enhance and extend their cognitive machinery, by e.g. better utilizing their attentional resources, or mod- ifying their perceptual-motor means. Taking inspiration from these ideas, and building on multi-agent models developed in other fields, the field of language evolution developed models of the emergence of shared resources for communi- cation in a community of agents. In these models, agents with various means of categorization and learning engage in communicative interactions with each other, using shared signs to refer either to pre-given meanings or entities in a situation. In order to avoid falling into the same mentalist pitfalls as cognitivism in the design of these models, such as the stipulation of an inner sphere of mean- ings for which communicative signs are mere labels, the role of communication should be viewed as one of the social coordination of behavior using physically grounded symbols. To this end, an experimental setup for language games, and a robotic model for agents which engage in such games are presented. The setup allows the agents to utilize shared symbols in the completion of a simple task, with one agent instructing another on which action to undertake. The symbols used by agents in the language games are grounded in the embodied choices presented to them by their environment, and the agents can further use the symbols created in these games for enhancing their own behavioral means. The learning mechanism of the agents is similarity-based, and uses low-level sensory data to avoid the building in of features. Experiments have shown that the establishment of a common vocabulary of labels depends on how well the instructors are trained on the task and the availability of feedback mechanisms for the exchanged labels.
8

The dynamics of literacy acquisition and learning: focusing on gifted learners in a language arts-art collaborative class

Kelley, Linda 13 July 2005 (has links)
No description available.
9

Situated Play

Rambusch, Jana January 2008 (has links)
This thesis addresses computer game play activities from the perspective of embodied and situated cognition. From such a perspective, game play can be divided into the physical handling of the game and the players' understanding of it. Game play can also be described in terms of three different levels of situatedness "high-level" situatedness, the contextual "here and now", and "low-level" situatedness. Moreover, theoretical and empirical implications of such a perspective have been explored more in detail in two case studies. / <p>Report code: LiU-Tek-Lic-2008:17.</p>
10

Making Doable Problems within Controversial Science : U.S. and Swedish Scientists’ Experience of Gene Transfer Research / Hur forskare skapar utförbara problem inom en kontroversiell vetenskap : Amerikanska och svenska forskares erfarenheter av genterapiforskning

Grankvist, Hannah January 2011 (has links)
This thesis explores how scientists within the controversial scientific field of gene  transfer make their research doable. Based on in-depth interviews with gene transfer scientists and key individuals from different regulatory agencies and advisory boards in Sweden and the U.S.A., the study focuses on how scientists describe and reason about how they handle the various problems that confront them as they work in a technically advanced and highly controversial field of research. Drawing upon Clarke and Fujimura’s concepts of situatedness and doability, Latour’s concepts of enrollment and translation, Strauss’concepts of articulation work and alignment as well as Gieryn’s concept of boundary-work, the study analyzes how doable problems are constructed within gene transfer, from basic science to clinical application on human subjects. Doable problems were constructed by enrolling allies on different levels, translating interests and creating alignment of interests and activities of the allies enrolled. The study covers how scientists handle questions of funding, research cooperation and choice of scientific material as well as the ethical complications involved in gene transfer research and its applications. For the U.S. scientists an essential part of creating doable problems consisted of boundary-work in relation to regulatory demands and interventions, something that did not concern the Swedish scientists to the same extent. Gene transfer, due to its controversial character, has raised public fears and concerns. Using Goffman’s concept of frames, the study also analyzes how gene transfer scientists attempt to gain public acceptance by framing gene transfer as an ordinary kind of therapy, while simultaneously heralding it as a revolutionary new technology, in order to obtain the external funding necessary for an expensive and extensive research. / Avhandlingen undersöker hur forskare inom det kontroversiella forskningsfältet genterapi gör sin forskning möjlig. Utifrån djupintervjuer med genterapiforskare samt med nyckelpersoner inom  regleringsmyndigheter och rådgivande organ i Sverige och USA visas i avhandlingen hur forskare beskriver och resonerar kring hur de hanterar olika problem som uppstår i deras arbete inom ett vetenskapligt avancerat och mycket kontroversiellt forskningsfält. Med hjälp av Clarke och Fujimura’s begrepp situatedness och doability, Latour’s begrepp enrollering och översättning, Strauss’ begrepp articulation work och alignment samt Gieryn’s begrepp gränsarbete analyserar avhandlingen forskarnas arbete med att konstruera utförbara problem inom genterapiforskning, från grundforskning till klinisk tillämpning på människor. Detta sker genom enrollering av allierade på olika nivåer, genom översättning av olika aktörers intressen samt genom att dessa enrollerade allierades verksamheter och intressen läggs i linje med forskarnas egna. Avhandlingen tar upp hur forskarna hanterar olika praktiska problem, som finansiering, forskningssamarbete och val av forskningsmaterial, samt hur de bemöter de olika etiska problem som genterapiforskningen och dess tillämpning innebär. Avhandlingen visar även på en viktig skillnad mellan de intervjuade amerikanska och svenska forskarna. I USA måste forskarna hantera en stark reglering av deras arbete, något som inte berör de svenska forskarna på samma sätt; de amerikanska forskarna måste därvid använda olika former av gränsarbete i sina relationer till reglerande myndigheter. Genterapins osäkra och kontroversiella karaktär har orsakat rädsla och oro hos allmänheten. Avhandlingen analyserar genterapiforskarnas försök att skapa samhällelig acceptans för sin forskning genom att ge den en inramning som en etablerad form av medicinsk behandling. Detta sker i viss motsättning till en parallell inramning av genterapi som en ny och revolutionerande teknologi, något som sker i syfte att erhålla den nödvändiga finansieringen för en kostnadskrävande och omfattande forskning.

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