Yes / Recent advances in multimedia technology have led to tremendous increases in the available volume of video data, thereby creating a major requirement for efficient systems to manage such huge data volumes. Video summarization is one of the key techniques for accessing and managing large video libraries. Video summarization can be used to extract the affective contents of a video sequence to generate a concise representation of its content. Human attention models are an efficient means of affective content extraction. Existing visual attention driven summarization frameworks have high computational cost and memory requirements, as well as a lack of efficiency in accurately perceiving human attention. To cope with these issues, we propose a divide-and-conquer based framework for an efficient summarization of big video data. We divide the original video data into shots, where an attention model is computed from each shot in parallel. Viewer's attention is based on multiple sensory perceptions, i.e., aural and visual, as well as the viewer's neuronal signals. The aural attention model is based on the Teager energy, instant amplitude, and instant frequency, whereas the visual attention model employs multi-scale contrast and motion intensity. Moreover, the neuronal attention is computed using the beta-band frequencies of neuronal signals. Next, an aggregated attention curve is generated using an intra- and inter-modality fusion mechanism. Finally, the affective content in each video shot is extracted. The fusion of multimedia and neuronal signals provides a bridge that links the digital representation of multimedia with the viewer’s perceptions. Our experimental results indicate that the proposed shot-detection based divide-and-conquer strategy mitigates the time and computational complexity. Moreover, the proposed attention model provides an accurate reflection of the user preferences and facilitates the extraction of highly affective and personalized summaries. / Supported by the ICT R&D program of MSIP/IITP. [2014(R0112-14-1014), The Development of Open Platform for Service of Convergence Contents].

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Abstract This dissertation, and the three original articles on which it is based, explore the nature of teaching physical skills in the particular context of three budo sports: judo, Brazilian jiu-jitsu, and aikido. In particular, this dissertation examines the way demonstrations of budo techniques are conducted in collaboration between the teachers, their partners and the students. Particular focus is on ‘whole class demonstrations’, situations where all the participants in the class are gathered in a shared participation framework, either to observe the demonstration or perform in it. This dissertation reveals how and by whom demonstrations are conducted by examining their depictive, supportive and annotative aspects. By using video recordings of naturally-occurring budo demonstrations and employing a multimodal conversation analytic method, the ‘demonstration’ is defined as a social event comprising of a physical depiction and context-establishing interactional aspects. The three original articles introduce and examine interactional phenomena directly related to the aforementioned three aspects. The first article explores the employment of communicative moves necessary to establish the physical, temporal and participatory space for the demonstration. The second article explores the way in which the teacher and the partner can facilitate easier observation of the technique through interactional parsing, the return-practice and phase-clarifying actions. The third article explores the interaction between the teacher and the partner, by illustrating the different modalities in which the partner can be guided through the demonstration. / Tiivistelmä Tämä väitöskirja, sekä kolme alkuperäistä tutkimusartikkelia joihin se perustuu, tutkivat fyysisten taitojen opetusta kolmen budolajin, judon, Brasilialaisen jujutsun ja aikidon kontekstissa. Väitöskirja perehtyy multimodaalisiin ja kollaboratiivisiin tapoihin, joilla budo-opettajat, heidän partnerinsa, ja oppilaansa esittelevät budotekniikoita koko luokan kattavissa demonstraatiossa, eli tilanteissa, joissa jokainen osallistuja on osa yhteistä osallistujuuskehikkoa, joko tekniikka suorittamassa tai seuraamassa. Väitöskirja paljastaa kuinka, ja kenen toimesta demonstraatiot toteutetaan tarkastelemalla niiden esittäviä, tukevia, ja selvittäviä piirteitä. Väitöskirja hyödyntää multimodaalisen keskustelunanalyysin tutkimusmetodia ja määrittää ’demonstraation’ sosiaalisena tapahtumana, joka muodostuu kehollisesta näytöstä ja kontekstia-rakentavista vuorovaikutuksellista piirteistä. Väitöskirjan kolme alkuperäistä tutkimusartikkelia tarkastelevat yllämainittuihin kolmeen demonstraation piirteeseen liittyviä vuorovaikutuksen ilmiötä. Ensimmäinen artikkeli tarkastelee kommunikatiivisia siirtoja, joita hyödynnetään, kun luodaan demonstraatioiden vaatima fyysinen ja ajallinen tila sekä osallistumiskonfiguraatio. Toinen artikkeli tutkii opettajien ja heidän partnereidensa hyödyntämiä budotekniikan tarkkailua helpottavia vuorovaikutuksellisia ilmiötä: vuorovaikutuksellista jäsentämistä, paluu-käytännettä, sekä budotekniikan vaiheita selventäviä toimintoja. Kolmas artikkeli perehtyy erityisesti opettajan ja tämän partnerin väliseen vuorovaikutukseen paljastamalla eri modaliteetit, joilla partneria voidaan ohjata demonstraation aikana.

Globalization, and the movement of workers in the high technology industries of Silicon Valley have far reaching effects on the school systems which serve their children. This study takes place in a neighborhood public school in the heart of the area known as Silicon Valley, California, during the early implementation of the Common Core State Standards. During the time of this study, the student population in the valley was growing in number and diversity due to the impact of developments in the high technology industries in the valley, and the education system was recovering from drastic budget cuts as well as embracing a nationwide curriculum movement aimed at more standardization, high-stakes testing, and accountability. As the teacher in the role of participant observer and researcher, employing ethnographic methods of data collection, including video recordings, observations, interviews, and reflective journals and video journaling, student interactions were recorded and analyzed through the application of Bernstein’s theories of pedagogic interactions as well as sociocultural learning theory and the work of Vygotsky. The results indicate that Reading Buddies could be an example of an ‘empowering pedagogy’ which gives linguistically and socially marginalized children a voice in an educational milieu driven by high stakes testing and accountability with an emphasis on the use of English. The study highlights strategies used by young children acquiring English as an additional language to interact with and co-construct meaning of English language texts during weekly Reading Buddy sessions. Seeing the diversity found in the classrooms as a strength and benefit to the education system, this study explores how allowing space for children to bring every day knowledge, home languages, and personal experiences into literacy practices impacts their interactions with English Language texts.

Video database applications call for flexible and powerful modeling and querying facilities, which require an integration or interaction between database and knowledge base technologies. It is also necessary for many real life video database applications to incorporate uncertainty, which naturally occurs due to the complex and subjective semantic content of video data. In this thesis study, firstly, a fuzzy conceptual data model is introduced to represent the semantic content of video data. UML (Unified Modeling Language) is utilized and extended to represent uncertain information along with video specific properties at the conceptual level. Secondly, an intelligent fuzzy object-oriented database framework is presented for video database applications. The introduced fuzzy conceptual model is mapped to the presented framework, which is an adaptation of the previously proposed IFOOD architecture. The framework provides modeling and querying of complex and rich semantic content and knowledge of video data including uncertainty. Moreover, it allows (fuzzy) semantic, temporal, (fuzzy) spatial, hierarchical, regional and trajectory queries, based on the video data model. We think that the presented conceptual data model and framework can be adapted to any application domain related to video databases.

The purpose of this study was to examine the effects of teaching functional assessment skills to three Prekindergarten teachers and their teaching assistants. The effects were measured by examining the behavior of the teachers and assistants, as well as the behaviors of the students; before, during and after the delivery of three, two-hour functional assessment classes. The teaching staff videotaped themselves and their students during a regular class time, predetermined by the researcher and each teacher prior to the onset of baseline data collection, over an approximate nine-week period. The video was taken in twelve-minute segments every day. Later, the video was coded for specific behaviors. Although there were gains in appropriate intervention strategies from teachers and assistants during the intervention phase, the interventions generally peaked a week or two after the classes ended and gradually declined. Teacher skills were retained however, as most ratios of appropriate interventions maintained at higher rates than baseline. Relationships between student behavior and correct teacher interventions were established and maintained. The intervention resulted in changes in staff behavior, but results did not sustain at high levels over time. The realization that escape maintained some student behavior, and teaching skills to "test" for function, were likely the most important concepts for many of the participants. Further research should include adding a behavior coach to assist in shaping the teaching staffs' emerging skills and to provide a sounding board when developing specific student interventions.

Cette recherche a pour objet l’étude des comportements des utilisateurs d’une plateforme de visioconférence poste à poste. Les utilisateurs de la plateforme sont deux groupes de tuteurs et leurs étudiantes ; le groupe de tuteurs est constitué de tuteurs en formation (de futurs enseignants en formation universitaire professionnalisante) et d’enseignants de FLE utilisant les outils du web 2.0. Cette recherche a pour cadre l’enseignement du FLE à destination d’un groupe d'étudiantes américaines de l’université de Californie Berkeley donné de janvier à mars 2010 sur une plateforme d’apprentissage vidéographique synchrone. La plateforme VISU, a été développé suivant une démarche originale, la conception d’une plateforme destinée a l’enseignement/apprentissage des langues. La particularité de ce projet réside dans le fait qu’un équipe de chercheurs et de développeurs ont accompagné les tuteurs et les étudiantes lors de cette expérimentation afin d’améliorer l’utilisabilté de VISU d’une séance sur l’autre. À travers une analyse de deux tâches dans les configurations qui placent un tuteur devant deux étudiantes, deux tuteurs devant deux étudiantes et un tuteur devant une étudiante, et d’une micro-analyse portant sur la transmission des consignes, nous tentons d’observer le discours et la mimo-gestualité témoignant de leur expérience utilisateur au contact de la technologie utilisée. Nous étudions également l’utilisation qu’ils font des différents outils textuels de communication, des ressources présentes sur la plateforme, ainsi que celle de la caméra. Nous discutons les résultats qualitatifs en vue de mettre au jour leurs comportements d’utilisateurs d’une plateforme en cours de construction. La méthode s’appuie sur la triangulation des données. Aux échanges en ligne du corpus multimodal est appliquée une analyse de la mimo-gestualité, ainsi qu’analyse de discours et des interactions. Des entretiens, des questionnaires et les perceptions des étudiantes et des tuteurs viennent éclairer l’analyse de leur vécu et de leur ressenti. Ce travail de recherche tente donc à travers la description de la communication pédagogique synchrone de mieux comprendre les différentes pratiques, principalement discursives et mimo-gestuelles, des tuteurs et des étudiantes engagés dans une formation en ligne. / This research studies the behavior of users of a desktop videoconferencing platform VISU (designed to deliver online courses), through the multimodal pedagogical communication of two groups of teachers: trainee tutors and experienced teachers based in different locations who taught French as a Foreign Language to a group of students from UC Berkeley in 2010. A team of researchers and developers worked together with the tutors in this experiment to improve the usability of the platform, which was under construction during the course of the study. In understanding the experience of users while using the tool, due to the performance limitations of the tool under construction, a new method of analysing data was devised in which user behavior was studied through discourse analysis, mimogestuality and the usage of tools including chat and webcam. Specifically, we analysed the usage of different tools (text based tools) as well as the webcam’s effects on user behavior. Then, through a micro analysis of the pedagogical instruction, we identified the role of these different communication tools used by the tutors in conveying the meaning of the task to be carried out. Interviews, questionnaires and perceptions of students and tutors were gathered to inform the analysis of their experiences and their feelings. This research therefore attempts, through the description of the synchronous teaching communication, to better understand the different practices, mainly discursive and mimo-gestural, of tutors and students engaged in the multimodal learning. In addition, a key significance of this study is that it demonstrates the value of considering user experience (UX) in studies involving language learning through technology. At the same time, it also indicates the value of including discourse analysis and mimogestuality in user experience research involving interactive pedagogical tools.

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