The challenge to create learning environments that could promote learning is an aspect which currently enjoys much attention in the higher education environment. According to the outcomes based approach, learners are required to be equipped with relevant and applicable skills when entering the workforce on completion of their studies. With this as background, this study investigated the applicability of experiential learning as an approach that could enable learners to make optimal use of changing learning environments. Experiential learning mainly takes place through learners’ exposure to concrete experiences which are then critically reflected upon. The concept of action learning is often used as synonym for experiential learning, as the principles underlying these concepts and the philosophical assumptions are the same. Service learning is an application field of experiential learning that differs from the traditional learning approach. Learners learn from their exposure to learning experiences, whereas service rendering takes place simultaneously. In this study attention will be paid to the importance of reflection in the learning process. On completion of the learning experience learners critically investigate their own values, preconceptions, insights they have gained in the process and actions. The reflective learning process gives learners the opportunity to monitor their own learning objectives, to enhance insight and understanding and observe the interaction between theory and practice. In addition to this the process allows them to optimise human potential by applying what they have learned. According to the process followed in this study, learners have developed and implemented certain psycho-social interventions in collaboration with a specific community. At the start of the process learners were requested to keep their dairies up to date and use these to reflect on any aspect of their learning experience. With the consent of the learners a quantitative analysis was done of the content of their dairies and certain themes have manifested. The main themes that have been identified refer to the experiences during the development and implementation of the intervention and these relate mainly to the learning facilitator. Initially learners were quite dependent on familiar structures but once they became more at ease with the process, they were able to observe and manage the process with greater freedom. One aspect that is prominent in this study is the significance of group processes - not only for the individual learner, but also as part of the greater environment. Learners were specifically challenged to manage the unpredictability of the various processes – something which has required greater adaptability and leniency of learners. Learners’ reflections on the achievement of learning outcomes centre on opportunities to practically apply their theoretical knowledge. In many learners the interaction between theory and practice has resulted in the expansion of their cognitive content. Many references were also made to the improvement of life skills which relate specifically to the group processes and personal enrichment. A reflective attitude in a learning environment facilitates opportunities for learners to build on their current knowledge and develop a greater emotive conscience of the various processes and people involved in the learning environment. In addition to this individual life skills can also become more prominent. Reflection on learning experiences is a critical component by which learners could make sense of their experiences and apply their knowledge, emphasise the greater environment and support the interaction between people and the self as part of the learning process. / Dissertation (MA (Research Psychology))--University of Pretoria, 2008. / Psychology / unrestricted

How does the brain generate our experience of being in control over our actions and their effects? Here I argue that the perception of events as self-caused emerges from a comparison between anticipated and actual action-effects: if the representation of an event that follows an action is activated before the action, the event is experienced as caused by one’s own action, whereas in the case of a mismatch it will be attributed to an external cause rather than to the self. In a subliminal priming paradigm I show that participants overestimated how much control they had over objectively uncontrollable stimuli, which appeared after free- or forced-choice actions, when a masked prime activated a representation of the stimuli immediately before each action. This prime-induced control-illusion was independent from whether primes were consciously perceived. Results indicate that the conscious experience of control is modulated by unconscious anticipations of action-effects.

Imago relationship therapy was originally applied to couples counselling by Dr Hendrix (1992, 1993). This model was applied to a group of senior managers from the Lonmin Platinum Mine to create an understanding of intrapersonal and interpersonal dynamics to reduce the conflict levels they experienced in the workplace. Imago theory is applicable to the workplace because of the influence of intrapersonal processes on interpersonal dynamics, which is the same influence that causes conflict in romantic relationships. Love relationships consist of three stages, namely romantic love, the power struggle stage, and the real love stage. In the organisational context, these stages are the initial excitement phase, the power struggle stage, and the conscious relating stage. The study aimed to obtain quantitative and qualitative data on the effects of the Imago theory programme presented to the group of managers. The study thus aimed to determine whether the managers experienced a shift in their consciousness after the programme had been presented. Furthermore, the study aimed to determine whether such a shift in consciousness would have an effect on the individuals’ overall emotional wellbeing and if it would increase their overall life satisfaction. Furthermore, the study investigates if the programme had a positive effect on their interpersonal relationships (particularly with their subordinates). Twenty-two senior managers and 22 subordinates participated in the study. Certain pre-tests were conducted, followed by the seven-module intervention. The same post-tests were conducted after the training had taken place. Quantitative and qualitative results were obtained. The quantitative results showed that the participants’ problem solving abilities improved and that they experienced marginally higher levels of life satisfaction. The reactivity levels experienced by the participants during conflict situations decreased, and their levels of marital satisfaction improved. The results also showed that the managers responded more positively to their subordinates after the intervention. Furthermore, the subordinates experienced their managers as being more flexible after the intervention. The qualitative results indicated that a shift in consciousness did take place as envisaged. The group understood both intrapersonal and interpersonal psychodynamics. They also willingly applied Imago concepts to improve their functioning in the organisational context. / Psychology / D. Litt. et Phil. (Psychology)

In this thesis, we use evolutionary robotics techniques to automatically design and synthesise<p>behaviour for groups of simulated and real robots. Our contribution will be on<p>the design of non-trivial individual and collective behaviour; decisions about solitary or<p>social behaviour will be temporal and they will be interdependent with communicative<p>acts. In particular, we study time-based decision-making in a social context: how the<p>experiences of robots unfold in time and how these experiences influence their interaction<p>with the rest of the group. We propose three experiments based on non-trivial real-world<p>cooperative scenarios. First, we study social cooperative categorisation; signalling and<p>communication evolve in a task where the cooperation among robots is not a priori required.<p>The communication and categorisation skills of the robots are co-evolved from<p>scratch, and the emerging time-dependent individual and social behaviour are successfully<p>tested on real robots. Second, we show on real hardware evidence of the success of evolved<p>neuro-controllers when controlling two autonomous robots that have to grip each other<p>(autonomously self-assemble). Our experiment constitutes the first fully evolved approach<p>on such a task that requires sophisticated and fine sensory-motor coordination, and it<p>highlights the minimal conditions to achieve assembly in autonomous robots by reducing<p>the assumptions a priori made by the experimenter to a functional minimum. Third, we<p>present the first work in the literature to deal with the design of homogeneous control<p>mechanisms for morphologically heterogeneous robots, that is, robots that do not share<p>the same hardware characteristics. We show how artificial evolution designs individual<p>behaviours and communication protocols that allow the cooperation between robots of<p>different types, by using dynamical neural networks that specialise on-line, depending on<p>the nature of the morphology of each robot. The experiments briefly described above<p>contribute to the advancement of the state of the art in evolving neuro-controllers for<p>collective robotics both from an application-oriented, engineering point of view, as well as<p>from a more theoretical point of view. / Doctorat en Sciences de l'ingénieur / info:eu-repo/semantics/nonPublished

Les outils informatiques (comme les routeurs et calculateurs entre autres) sont des consommateurs accrus d'énergie. Cette problématique a été déjà prise en compte dans les réseaux mobiles. La question de l'énergie commence juste à être prise en compte pour les systèmes "fixes" à grande échelle qui atteignent de nos jours des tailles impressionnantes. L'objectif de cette thèse est de traiter le problème de la consommation de l'énergie dans les réseaux de communication filaires: fournir un certain niveau de qualité de service (QdS) par rapport à la perte des paquets, la vitesse de réponse et la robustesse par rapport aux différentes périodes d'échantillonnages tout en contrôlant la puissance consommée du système. Le but est de concevoir une méthode à partir de la théorie de la commande, qui consiste à garantir un certain nombre de paramètres de QdS. Cette technique est appliquée au niveau local d'un équipement réseau (routeur, switch ...). La loi de commande permet de distribuer temporellement le trafic qui traverse un nœud contrôlé dans les réseaux de communication filaires. Dans ce travail, nous avons considéré que les nœuds de communications sont des routeurs de type ALR. Pour traiter le problème de la consommation énergétique dans les réseaux de communication filaires, nous avons proposé un modèle énergétique ALR étendu adapté à la théorie de commande. Pour ce modèle, nous avons besoin de choisir deux paramètres (ß, ?), permettant de choisir la taille de file d'attente de référence qref et sa fenêtre temporelle d'actualisation Tqref .Ce deux paramètres ont été choisis à partir de plusieurs simulations avec différentes combinaisons des paramètres (ß, ?). Nous avons vu que la variation de ces deux paramètres permet d'agir énormément sur la QdS ainsi que sur la quantité d'énergie réduite. Les résultats théoriques sont ensuite testés sur Matlab-Simulink, puis sur le simulateur de réseaux NS-2. Les simulations ont montré que la consommation énergétique dans les réseaux de communication est bien réduite tout en garantissant un certain niveau de QdS. / The computer tools (as the routers and calculators among others) present a high energy consumption. This problem has been already included in mobile networks. The question of energy is just beginning to be considered for "fixed" large-scale systems that reach nowadays high sizes. The objective of this thesis is to address the problem of energy consumption in wired communication networks: provide a certain level of quality of service (QoS) with respect to the packet lost, response speed and robustness with respect to different sampling periods while controlling power consumption of the system. The goal is to design a method from the theory of control, which guarantees these QoS. This technique is applied locally to a network equipment (router, switch ...) and the control law used to distribute temporally the traffic through a controlled node in the wired communications networks. In this work, we considere that the communication between nodes are performed by routers ALR type. In order to deal with energy reduction problem, we propose an extended ALR energy model adapted to control theory. For this model, we need to choose two parameters (ß, ?) allowing to choose the queue length reference, qref, and the related update time-window, Tqref. These parameters have been chosen after performing some simulations with different combinations of parameters (ß, ?). We have seen that the variation of these two parameters provide an impact over the QoS as well as the energy reduction. The theoretical results are then tested in Matlab-Simulink as well as some experiments under the simulator NS-2. Simulations showed that the energy consumption in communications networks is reduced while ensuring a certain level of QoS.

The online platform consciousdesign.cz, created as the output of the thesis, provides sources for possible conscious approaches to design. It consists of a database of innovative materials, research texts, related links and interviews with designers, material specialists, scientists and technologists. The website can serve as a starting point for students and designers who are interested in current possibilities and new ways leading to design that is responsible to nature and humans.

Icke-verbal kommunikation är ett viktigt komplement till det verbala språket, inte främst i utbildningsverksamheter med yngre barn. Syftet med studien är att undersöka en logopeds och en specialpedagogs syn på hur och om icke-verbal kommunikation används medvetet som ett pedagogiskt verktyg i flerspråkiga verksamheter för yngre barn och varför det används. För att ta reda på det har vi genomfört kvalitativa semistrukturerade intervjuer med en logoped och en specialpedagog samt utgått från John Deweys pragmatiska perspektiv. Genom arbetet har vi kommit fram till att icke-verbal kommunikation är av vikt för att förstärka och förtydliga det verbala språket och att icke-verbal kommunikation är bra för alla men nödvändigt för vissa. Det är upp till pedagogerna att ha den kunskapen för att använda det med ett tydligt syfte för det individuella barnets skull. Slutsatserna som dras i studien visar bland annat att gester, kroppsspråk och olika former av material används som medveten icke-verbal kommunikation i flerspråkiga verksamheter och detta används i situationer under hela dagen i framför allt samspelssituationer, i interaktion, i situationer där något behöver förtydligas samt när någon kommer till en ny språkig miljö. Detta i syfte att skapa förståelse, göra sig förstådd, förtydliga, kommunicera, uttrycka kommunikation på ett annat sätt och för att fungera språkfrämjande. / Non-verbal communication is an important complement to the verbal language in activities with younger children. The purpose of the study is to investigate the views of a speech therapist and a special education teacher on how and if non-verbal communication is used deliberately as a pedagogical tool in multilingual activities for younger children and why it´s used. To find out, we conducted qualitative semi-structured interviews and based our work on John Deweys pragmatic perspective. We have come to the conclusion that non-verbal communication is important to reinforce and clarify the verbal language and that it´s good for everyone but necessary for some. It´s up to the educators to have knowledge, in order to use it with a clear purpose for the individual child´s sake. Some of the conclusions drawn in the study show that gestures, body language and different types of materials are used as conscious non-verbal communication in multilingual activities and is used in situations throughout the day in mainly interaction situations, in interaction, in situations where something needs to be clarified and when someone comes to a new linguistic environment. This is for the purpose of creating understanding, making oneself understood, clarifying, communicating, expressing communication in a different way and to function as a language promoter.

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La perception visuelle implique une interaction complexe entre les yeux, le cerveau et les processus cognitifs, transformant les stimuli visuels en une représentation interne de l'environnement. Bien qu'une fraction limitée des informations parviennent à notre conscience visuelle, le cerveau traite une quantité considérable d'informations de manière inconsciente. Des recherches en imagerie par résonance magnétique fonctionnelle (IRMf) ont visé à mieux discerner les corrélats neuronaux associés à la perception consciente et inconsciente. Cependant, l'identification précise des régions cérébrales impliquées dans la génération d'une perception consciente, et leur modulation par l'expérience ou par des lésions cérébrales, demeure un défi. Cette thèse examine le traitement conscient et inconscient de l'information visuelle à l'aide de tâches visuelles et de neuroimagerie, pour comprendre comment ces processus se reflètent dans l'activation cérébrale et l'impact de lésions du cortex visuel. L'article 1 vise à identifier de manière empirique les zones d'activation fonctionnelle associées au traitement visuel conscient et inconscient chez les individus neurotypiques, en menant deux méta-analyses quantitatives de données de neuroimagerie. Les résultats révèlent que le traitement conscient mobilise la jonction fronto-inférieure, le sillon intrapariétal, le cingulum antérieur dorsal, le gyrus angulaire, le cortex temporo-occipital et l'insula antérieure. Le traitement visuel inconscient sollicite davantage les régions postérieures, comme le complexe occipital latéral. L'article 2 traite des processus cognitifs associés à la modulation de l'activation fonctionnelle suite à une lésion du cortex visuel. La déficience visuelle cérébrale (DVC) est caractérisée par une perte des fonctions visuelles due à un dommage cérébral plutôt qu'à une atteinte des yeux. Bien que la majorité des individus ne regagnent pas une vision normale, dans certains cas fascinants une amélioration peut être notée avec le temps en raison de la capacité du cerveau à se réorganiser. La perte visuelle peut s'accompagner du blindsight, où les individus sont capables de traiter de l'information visuelle tout en niant l'avoir vue. Cet article novateur utilise un paradigme de détection de mouvement pour évaluer l'activation des structures corticales et sous-corticales lors d'une performance de blindsight chez un individu avec DVC. Cette contribution significative met en évidence des corrélats neuronaux indépendants des aires visuelles primaires, associés à des structures spécifiques pendant la détection de mouvement en blindsight. Le chapitre 4 présente une base de données d'IRM haute résolution pour la perception du mouvement visuel d'individus neurotypiques et atteints de DVC. Les données incluent des mesures d'IRM structurelles, fonctionnelles, et de diffusion, des évaluations comportementales et de suivi du regard, des mesures électrophysiologiques, en plus de données prétraitées, le code et des métriques de contrôle de la qualité. L'article 3 caractérise les conséquences neurologiques des lésions cérébrales chez les participants DVC, ainsi que l'impact sur leur capacité à traiter divers stimuli de mouvement, comparés à un groupe de contrôles neurotypiques, en utilisant des techniques comportementales et d'IRM fonctionnelle à haute résolution. La détection automatisée des lésions a permis de quantifier de manière fiable l'étendue des dommages cérébraux et les participants ont été catégorisés selon leur capacités visuelles résiduelles. Les résultats confirment que le cerveau peut traiter des informations visuelles malgré l'absence de zones visuelles primaires intactes. Les participants DVC ont présenté des altérations fonctionnelles étendues, contrairement aux participants neurotypiques, qui ont montré une activation focalisée dans des régions spécialisées pour le traitement visuel et de mouvement. L'hémisphère lésé présente une activation plus synergique dans l'aire temporale médiane et le complexe occipital latéral. Dans l'hémisphère intact, ce dernier peut répondre à une stimulation du champ visuel atteint. Le thalamus et le pulvinar ipsilésionnels ont montré une dominance ipsilatérale en réponse au mouvement, contrairement à la dominance controlatérale dans l'hémisphère intact et chez les participants DVC avec des capacités visuelles résiduelles comparables à celles des contrôles. Cette thèse, par une approche multimodale, étudie les mécanismes neuronaux du traitement visuel chez les individus neurotypiques et atteints de DVC. L'utilisation d'étapes empiriques séquentielles, notamment une étude de cas, des analyses de groupes et des méta-analyses, renforce la fiabilité et l'applicabilité de la recherche, et vise à cartographier l'adaptation cérébrale après une lésion du cortex visuel. / Visual perception involves the intricate interplay of the eyes, brain, and cognitive processes, enabling photons of visible light to be captured on the retina, processed through specific pathways in the brain and transformed into a rich internal representation of our surroundings. While only a fraction of information reaches conscious awareness, the brain can process the remaining unconsciously. Functional magnetic resonance imaging studies have sought to understand the neural signals associated with conscious versus unconscious perception. However, comprehensively understanding the core brain regions involved in generating a conscious perception and their modulation through experience or brain damage remains a challenge. In this thesis, we investigate the conscious and unconscious processing of visual information through a series of visual tasks. We aim to understand how these processes are reflected in brain activation and how they can be modulated by damage to the visual cortex. Article 1 aimed to empirically identify and characterize areas of reliable convergence in functional activation of regions engaged during either conscious or unconscious visual processing in neurotypical participants by conducting two distinct quantitative meta-analyses. The findings reveal that conscious visual processing readily engages a constellation of regions comprising the inferior frontal junction, intraparietal sulcus, dorsal anterior cingulate, angular gyrus, temporo-occipital cortex and anterior insula, whereas unconscious processing recruits posterior regions, mainly the lateral occipital complex. The aim of Article 2 was to provide a detailed understanding of cognitive constructs and functional alterations following visual cortex damage. Cerebral visual impairment (CVI) refers to a loss of visual function caused by damage to the brain rather than the eyes. While most individuals do not recover intact vision, some cases have demonstrated improvement over time due to the brain's ability to reorganize itself. In certain instances of visual loss, blindsight can occur, allowing individuals to process visual information without conscious awareness. To our knowledge, this article was the first to propose the use of an event-related motion detection paradigm to assess functional activation in cortical and subcortical structures, independant of primary visual areas, during a CVI individual's blindsight performance. Chapter 4 aimed to conceptualize and acquire a unique high-resolution MRI dataset for studying visual motion perception in neurotypical and CVI individuals. This comprehensive dataset encompasses multiple modalities, including structural, functional task-based, resting-state and diffusion MRI, behavioral and evaluations, electrophysiological measures, and eyetracking data, in addition to preprocessed data, code and quality control metrics. Article 3 aimed to understand the functional consequences of brain damage in CVI individuals and the resulting impact on their ability to process diverse visual motion stimuli, including looming and biological motion, compared to a group of neurotypical controls, using behavioral and high-resolution neuroimaging techniques. Automatic lesion mapping enabled to reliably quantify the extent of brain damage and participants were categorized based on their residual visual ability. The findings demonstrate that the brain can process and represent visual information, without intact primary visual areas. CVI participants exhibited broad functional alterations, contrasting the focused activation in visual and motion processing regions for neurotypical controls. Specifically, the lesioned hemisphere displayed synergistic activation in the middle temporal area and lateral occipital complex, while the intact hemisphere's lateral occipital complex responded to impaired visual field stimulation. The ipsilesional thalamus and pulvinar demonstrated an ipsilateral dominance in response to looming motion, in contrast to the contralateral dominance in the intact hemisphere and among CVI participants with residual visual abilities akin to neurotypical controls. By employing a multi-modal approach integrating behavioral assessments, structural and functional neuroimaging methods, this thesis comprehensively investigates the neural mechanisms underlying visual processing in both neurotypical individuals and those with CVI. The use of sequential steps in empirical science, namely a case study, group analyses, and meta-analyses, enhances the reliability and applicability of the research, and effectively contributes to help map brain adaptation post visual cortex injury and further inform neurotypical visual information processing.