abstract: Advances in technology are fueling a movement toward ubiquity for beyond-the-desktop systems. Novel interaction modalities, such as free space or full body gestures are becoming more common, as demonstrated by the rise of systems such as the Microsoft Kinect. However, much of the interaction design research for such systems is still focused on desktop and touch interactions. Current thinking in free-space gestures are limited in capability and imagination and most gesture studies have not attempted to identify gestures appropriate for public walk-up-and-use applications. A walk-up-and-use display must be discoverable, such that first-time users can use the system without any training, flexible, and not fatiguing, especially in the case of longer-term interactions. One mechanism for defining gesture sets for walk-up-and-use interactions is a participatory design method called gesture elicitation. This method has been used to identify several user-generated gesture sets and shown that user-generated sets are preferred by users over those defined by system designers. However, for these studies to be successfully implemented in walk-up-and-use applications, there is a need to understand which components of these gestures are semantically meaningful (i.e. do users distinguish been using their left and right hand, or are those semantically the same thing?). Thus, defining a standardized gesture vocabulary for coding, characterizing, and evaluating gestures is critical. This dissertation presents three gesture elicitation studies for walk-up-and-use displays that employ a novel gesture elicitation methodology, alongside a novel coding scheme for gesture elicitation data that focuses on features most important to users’ mental models. Generalizable design principles, based on the three studies, are then derived and presented (e.g. changes in speed are meaningful for scroll actions in walk up and use displays but not for paging or selection). The major contributions of this work are: (1) an elicitation methodology that aids users in overcoming biases from existing interaction modalities; (2) a better understanding of the gestural features that matter, e.g. that capture the intent of the gestures; and (3) generalizable design principles for walk-up-and-use public displays. / Dissertation/Thesis / Doctoral Dissertation Computer Science 2019

Les processus de transmission sont à la fois cruciaux pour la pérennisation des savoirs mais souvent occultés par une représentation dominante du savoir comme innovation. Cette recherche étudie les processus contemporains de la transmission au travail dans une approche sociale clinique en sciences humaines et sociales. Nous repérons des figures historiques de la transmission qui montrent que sa conception évolue en étroite corrélation avec la société et les représentations du temps. Actuellement, le sujet au travail est requis dans un processus de « subjectivisation » où il engage ses capacités subjectives pour faire face à l’incertitude. Nous posons que les difficultés rencontrées dans la transmission au travail aujourd’hui sont issues de l’activité d’explicitation et d’objectivation comme un processus long qui détermine les formes du travail. Ce faisant, les liens au collectif sont fragilisés et rendent plus difficile la transmission.L’étude empirique se base sur une intervention dans une entreprise produisant de l’électricité à l’occasion d’un chassé-croisé entre deux générations, dans un contexte de transformation de l’outil industriel. Cette recherche étudie ces processus de transmission à partir d’une compréhension de l’activité de connaître comme subjectivation. Les apports conjoints de la phénoménologie de Michel Henry, de la psychanalyse de la relation d’objet et de la sociologie de la connaissance de Karl Mannheim nous permettent de proposer la notion de « corps subjectif collectif » comme instance où s’articulent sujet individuel et collectif au travail et qui porte les processus de transmission. L’étude de terrain montre le rôle joué par cette instance ainsi que la crise qui résulte de sa fragilisation, à partir de laquelle peuvent être interprétés les difficultés relationnelles entre générations. Enfin, la thèse met en évidence l’existence d’idéologies de la connaissance opposées, selon qu’elles s’appuient sur le corps subjectif collectif ou sur les représentations qui permettent la circulation de connaissances explicitées et dessinent un nouveau modèle d’apprentissage. / Transmission processes are very important to keep knowledge developped by organizations but are often neglected because of a dominating conception of knowledge as innovation. This research studies contemporary transmission processes using a clinical and social theory and methodology. We identify historical figures of transmission showing their dependency with the evolutions of society and time conceptions. The subject at work is today involved in a situation of « subjectivization », requiring all his capacities as a subject to face risk and uncertainty. We say that these difficulties are linked to an intense activity of elicitation and objectivation of knowledge in a long historical development determining the work forms. The relations between people are thus made vulnerable making transmission a problem. The case studied here is based on an intervention in an organisation producing electricity that is engaged in a demographical transition. We propose to understand knowledge acquisition in the perspective of subjectivation, relying on the philosophy of Michel Henry, object relation theory in psychoanalysis and the knowledge sociology of Karl Mannheim. We define the concept of « collective subjective body » as a support for transmission processes. Our study shows that this « body » gets vulnerable, producing a crisis in transmission and relational problems between young and elder workers. We show that « knowledge ideologies » are at work, opposing workers refering to the collective subjective body and people, mostly managers, who refer to a model of explicit knowledge making its free circulation possible and the roots of a new model of learning.

The current study examined two methods of language sampling (interview and the Dixit Method) in early adolescents with typical language development. The purpose of this study was to examine the effectiveness of the two procedures in eliciting lexical diversity in spoken language samples in the early adolescent population. To examine lexical diversity, traditional methods of analysis (type token ratio, average type token ratio, and mean length of utterance) were applied. However, because literature historically alludes to flaws in these traditional methods, the researchers also applied an ecological approach to analysis of lexical diversity proposed by Scott Jarvis (2013). Student participants (n = 22) in the sixth grade (11:0 -12:11 years of age) were recruited through a local middle school. Both methods of language sampling were compared in a within-subject design for diversity of spoken language samples by applying the previously mentioned analysis procedures. The data was evaluated using a pairedsamples two-tailed t test. Although the sample size was small, evidence from this study indicates the Dixit Method provides a more holistic view of lexical diversity than the traditional method by considering six ecological components that are reflected in typical language use.

Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmacognosy Candidate: Gabriela Dohnalová Supervisor: PharmDr. Marie Kašparová, Ph.D. Title of diploma thesis: Plant tissue cultures as a potential source of phenylpropanoids I Explant cultures are the source of plant secondary metabolites. However, the production of secondary metabolites is usually low in explant cultures. Production can be increased by a method called elicitation. The basic prerequisite for successful elicitation is, among other things, finding a suitable elicitor, its concentration and optimal time of elicitor action on plant culture in vitro. The aim of this study was to observe the influence of lead chloride and ferrous sulfate (in four concentrations) on the production of podophyllotoxin in the suspension cultures of Juniperus virginiana L. (variety Hetzii and Glauca). The culture was cultured on Schenk and Hildebrandt nutrient medium with addition of 3.0 mg.l-1 α-naphthylacetic acid, 0.2 mg.l-1 kinetin and 15 mg.l-1 ascorbic acid. Cultivation proceed in 25 řC temperature and 16 hours light/8 hours dark period. Subsequently, the determination of the content of podophyllotoxin by HPLC was performed. Juniperus virginiana L. variety Hetzii produces a higher amount of podophyllotoxin than the Glauca...

As students begin secondary school, they are charged with learning more content, at a faster pace and with increased pressure from accountability measures (Dreschler, Shumaker, & Woodruff, 2004). If secondary students' reading difficulties are not identified and remedied, the gap between struggling readers and their peers widens every academic year (Edmonds, Vaughn, Wexler, Rutebuch, Cable, Tackett, and Schnakenberg, 2009). The task of reading instruction primarily falls on English teachers, but Strickland and Alvermann (2004) note that while secondary English Teachers do have more preparation in reading instruction compared to other content area teachers, they are not as prepared as they need to be and do not provide reading instruction even when given the opportunity. Additionally, little attention has been given to how teacher should be taught to teach reading (Moats & Foorman, 2003) and even less attention has been given to reading instruction at the secondary level (Edmonds, et al., 2009). Pre-service teacher's beliefs influence how they take in information presented in their teacher education program and classroom instructional decisions (Holt-Reynolds, 1992; Richardson, 2003). However few studies have examined English education pre-service teachers beliefs about teaching struggling readers at the secondary level. The purpose of this study is to describe and explain secondary English education pre-service teachers' beliefs about teaching struggling readers using Photovoice. This study uses a combination of constructivism, Lakoff and Johnson's concept of metaphor, and interpretivism as the theoretical framework. Research methods examining beliefs often involve using surveys or interviews (i.e. Sadaf, Newby, & Ertmer, 2012; Sandvik, van Dall, & Ader, 2013). However, these methods may not provide as representational responses as a method that allows participants to respond through multiple mediums and through metaphor. This study uses a modified version of the Photovoice method to examine secondary English education pre-service teachers' beliefs. Because Photovoice has not been used to examine beliefs of this population, an additional aim of this study is to examine Photovoice as a reflection method. The research questions guiding this study are: 1. What are English education pre-service teacher beliefs' about teaching struggling adolescent readers? 2. What are English education pre-service teacher beliefs about themselves as readers? 3. In what ways, if any, did Photovoice facilitate reflection on beliefs about reading instruction? Findings suggest English education pre-service teachers had not considered struggling readers as part of their classrooms, did not understand the complexities of the reading process, held a deficit view of struggling readers, assumed a teacher's identity, saw reading as an experience/event, found the discussion in the Photovoice process helpful in reflection, Photovoice helped address some issues with teacher reflection, and Photovoice helped develop as well as capture beliefs. Implications for teacher education are discussed.

This dissertation initially utilizes the analogy of an Andean intellectual's magnum opus of resistant visual art and text created in the 1600s, to explore the impact of current global influences on the identity of Awajún and Wampís Amazonian students residing in Lima, the capital city of Perú. The participants in this study are urban Amazonian indigenous intellectuals applying to enter, currently studying in degree programs, or pursuing graduate degrees at local universities of Lima. Using an amalgamation of Photovoice and Photo-Elicitation components, digital photography, open-source applications, and computer technology, participants creatively expressed through their visual discourse what it means to be an Awajún or Wampís citizen of Perú during difficult times of conflictive global interests and unattended local needs. Between the time of preliminary fieldwork in the Amazonian communities in 2008, and the final interviews in Lima of 2010, violence erupted during a local road blockade in the Amazon that claimed the lives of Awajún/Wampís citizens and mestizo police officers alike. It is in that convoluted context where the dissertation delves into the views of the students and professionals regarding their own indigenousness, nationality, and "new" literacies, languages, and technologies that should be considered by the mestizo population and governments in order to make Perú a safer and more inclusive place for indigenous peoples from the Amazon.

This qualitative exploratory study sought to explore and analyse the perceptions of first year nursing students aged 18-25 years toward older persons in aged care facilities. The expectations of first year nursing students in relation to performing nursing care on older persons was also examined. The students’ perceptions were explored using a photo-elicitation technique to evoke an emotive response. By challenging and confronting the participants with realistic photographs of nursing care, this technique encouraged the research participants to engage in anticipatory reflection prior to their first aged care clinical placement. Data were gathered through demographic questionnaires and semi-structured photo-elicitation interviews. Findings were analysed using thematic analysis. Themes included dissecting what it means to be a nurse, recognising dependence, and the re-visioning of therapeutic relationships including considering patient dignity and empathising with older persons. A youthful reflection on the differences between young and old included participants’ fearing for themselves in future, and this was another identified theme. The photo-elicitation technique challenged and confronted participants as they became aware of the responsibilities of performing nursing care and their belief that they lacked emotional preparedness. Experiencing sensitivity and awkwardness to nakedness of older person’s bodies was also highlighted by most of the participants’ responses. The findings suggest that it is essential in this time of demographic change and the growing ageing population that nursing education responds to the challenge of an evolving health care system by providing qualified, experienced aged care nurses who are familiar with the reality of older people. Therefore, first year nursing students’ transition to aged care nursing clinical placement and the adoption of positive attitudes is paramount. Despite a large number of research studies highlighting nursing students’ disinterest in caring for older persons, there have been few studies investigating educational interventions that could assist in overcoming this negative trend. The findings from this study have important implications for teaching strategies aimed at understanding undergraduate nursing students. Using photography to elicit emotional responses can also assist with reflective practice, which can be useful to enhance self awareness and an aesthetic and personal knowing. Encouraging anticipatory reflection can help socially prepare nursing students, increase their readiness for learning and foster more positive attitudes to caring for older people prior to the students’ initial aged care clinical placement.

Stress-induced changes in the emissions of volatiles from many economically-important plants have been demonstrated in studies over the past decade. Plants such as cotton and corn change both the composition and concentration of their emissions when subjected to wounding, herbivory and pathogen attack. Terpene-accumulating plants have been overlooked as potential objects of such studies although work on conifers has shown that species rich in constitutive defences can also exhibit induced responses. The aim of this study was to investigate whether terpene-accumulating plants respond to stress by altering their foliar emissions qualitatively and/or quantitatively. Species examined included Salvia officinalis (common sage), Melaleuca alternifolia (Australian tea tree) and Ocimum minimum (Bush basil). An experimental design was developed to eliminate factors such as leaf ontogeny that can affect the obtained results and complicate their interpretation. Small-scale solvent extraction and HS-SPME-based techniques were also developed; they enabled the quantitative determination of treatment-induced changes over periods ranging from 10 minutes to 6 months. Treatment of plants included mechanical wounding, herbivory, pathogen attack and chemical elicitation. Overall, statistically significant induced-changes were observed for both leaf-oil composition and concentration. The response of the different species used varied. O. minimum exhibited the greatest compositional changes whilst M. alternifolia was the only species for which oil-concentration changes were observed. The demonstrated changes were not as great as those reported in similar studies with non-terpene producing plants. The results indicate that the high metabolic costs associated with the production and storage of constitutive defences may be responsible for the limited induction of further defensive responses / Doctor of Philosophy (PhD)

Anthropogenic utilization of forest and woodland ecosystems can cause declines in flora and fauna species. It is imperative to restore these ecosystems to mitigate further declines. In this thesis, I focused on a highly degraded region, the Box-Ironbark forests and woodlands of Victoria, Australia. Rather than mature stands with large trees, stands are currently dominated by high densities of small stems. This change has resulted in reduced populations of many flora and fauna species dependent on older-growth forests and woodlands. Managers are interested in restoring mature Box-Ironbark forests and woodlands through three alternative management strategies: allocating land to National Parks and allowing stands to develop naturally without harvesting, modifying timber harvesting regimes to retain more medium and large trees, or a new ecological thinning technique that retains target habitat trees and removes competing trees to encourage growth of retained stems. / The effects of each management strategy are not easy to predict due to complex interactions between intervention and stochastic natural processes. Forest simulation models are often employed to overcome this problem. I constructed state-and-transition simulation models (STSMs) to predict the effects of alternative management actions and natural disturbances on vegetation structure. Due to a lack of empirical data, I relied on the knowledge of experts in Box-Ironbark ecology and management to construct STSMs. Models predicted that the development of mature woodlands under all strategies was minimal over the next 150 years, and neither current harvesting nor ecological thinning is likely to expedite the development of mature stands relative to growth and natural disturbances. However, differences in experts’ opinions led to widely diverging model predictions. / Uncertainty must be acknowledged in model construction because it can affect model predictions. I quantified uncertainty due to four sources – between-expert variation, imperfect expert knowledge, natural stochasticity, and model parameterization – to determine which source caused the most variance in model predictions. I found that models were very uncertain and between-expert uncertainty contributed the majority of variance in model predictions. This brings into question the use of consensus methods in forest management where differences between experts are ignored. / Using uncertain model predictions to make management decisions is problematic because any given action can have many plausible outcomes. I applied several decision criteria to uncertain STSM predictions using a formal decision-making framework to determine the optimal management action in Box-Ironbark forests and woodlands. I found that natural development is the most risk-averse option, while ecological thinning is the most risky option because there is a small likelihood that it will greatly expedite the development of mature woodlands. Rather than selecting one option, managers could rely on a risk-spreading approach where the majority of land is allocated to no-cutting National Parks and a small amount of land is allocated to the other two harvesting strategies. This would allow managers to collect monitoring data for all management strategies in order to learn about effects of harvesting and update model predictions through time using adaptive management.

<p>In Western society, food is debated and in various ways contested. Social science research has described various cultural imperatives related to food and choices of diet, that raises questions about how people understand issues of food and eating in their everyday lives. The aim of this study is to explore everyday notions of food and eating in urban Sweden. Drawing on social representations theory, qualitative interviews were carried out with fifteen men and women about their experiences and understandings of food and eating, also using a photo-elicitation method where visual material from cookery books and dietary advice were used as a point of departure for the interview conversation.</p><p>The interviewees categorize food into different sorts, such as ‘ordinary food’, ‘modern food’, ‘dangerous food’, ‘healthy food’, ‘ethic food’ and ‘festive food’, that are ascribed a meaning in relation to different arenas in time and space, for instance childhood, and related to health values as well as ethical and aesthetic values. Food is also discussed as different diets, such as mixed or vegetarian, and patterns of eating, which are in turn related to risk, health and the body. The analysis thus reveal notions about what food is and how we should eat, notions that are characterised by internal tensions and contradictions such as discipline contra pleasure, societal norms contra personal interests, everyday life contra ideals. These ‘fields of tension’ are analysed as a cultural repertoire of identity-positions. Finally, these results are discussed in terms of risk and opportunities, where the reflexive human being is depicted as able to both incorporate food imperatives and to challenge these imperatives in a process of striving for bodily and mental balance.</p>