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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

A laboratory course in experimental genetics for the biology major.

Lux, Melissa McNeil 12 1900 (has links)
This manual has been designed for a class of twenty- four students concurrently enrolled in the lecture course. The laboratory aids in the learning process and fosters an interest in the science of genetics. This manual and the experiments contained within are both informative and fun. The manual correlates with and expands upon the genetics course. Each investigation, with the exception of the Drosophila melanogaster project, can be completed in a 3-4 hour timeframe. This manual provides a “hands on” experience of theories simply discussed in the lecture course. This manual is intended to be a one-source manual where each investigation is designed to include an adequate introduction. Special attention has been given for each investigation with both the student and instructor in mind.
2

Improving the welfare of laboratory-housed primates through the use of positive reinforcement training : practicalities of implementation

Bowell, Verity A. January 2010 (has links)
Whilst there has been a recent increase in interest in using positive reinforcement training for laboratory-housed primates, there remains a reluctance to put into practice training programmes. Much of this reticence seems to stem from lack of expertise in the running of training programmes, and a perception that training requires a large time investment, with concurrent staff costs. The aim of this thesis was to provide practical recommendations for the use of training programmes in laboratories, providing primate users and carestaff with background information needed to successfully implement training programmes whilst improving the welfare of the animals in their care. Training was carried out with two species, cynomolgus macaques (Macaca fascicularis) and common marmosets (Callithrix jacchus) in three different research laboratories to ensure practicability was as wide ranging as possible. Training success and the time investment required were closely related to the primate's temperament, most notably an individual's willingness to interact with humans, in both common marmosets and cynomolgus macaques. Age and sex however had no effect on an individual's trainability. The training of common marmosets was more successful than that with cynomolgus macaques, possibly due to differences in early experience and socialisation. Positive reinforcement training helped both species to cope with the stress of cage change or cleaning, with the monkeys showing less anxiety-related behaviour following the training programme than before. Involving two trainers in the training process did not affect the speed at which common marmosets learned to cooperate with transport box training, but behavioural observations showed that initial training sessions with a new trainer led to animals experiencing some anxiety. This however was relatively transient. Whilst the training of common marmosets to cooperate with hand capture was possible, there seemed little benefit in doing so as the monkeys did not show a reduced behavioural or physiological stress response to trained capture as compared to hand capture prior to training. However strong evidence was found that following both training and positive human interactions the marmosets coped better with capture and stress was reduced. It is recommended that an increased use of early socialisation would benefit laboratory-housed primates, and would also help improve the success of training. Further, the time investment required shows that training is practicable in the laboratory for both species, and that positive reinforcement training is an important way of improving their welfare likely through reducing boredom and fear.
3

Les habitats alternatifs aux dispositifs gérontologiques institués : des laboratoires d'expérimentation à l'épreuve de la "fragilité" et de la "dépendance" des personnes âgées / Alternative housings for old citizen : experimental laboratories to deal in another way frailties and dependance

Rosenfelder, Cécile 20 June 2017 (has links)
Cette thèse a pour objet les habitats alternatifs aux dispositifs gérontologiques institués pour personnes âgées « fragiles » et « dépendantes ». Ces formules résidentielles s’inscrivent dans le prolongement d’un mouvement à contre-courant amorcé en France dès la fin des années 1970. Dans une comparaison critique avec les infrastructures existantes, structurées autour des deux pôles du maintien à domicile et de l’hébergement institutionnel, il s’agit pour les porteurs de projets de réinventer les lieux du vieillir et d’imaginer de nouveaux modèles d’accueil et d’accompagnement viables, si possible, « jusqu’à la mort ». Nous appréhendons ces réalisations novatrices comme des laboratoires d’expérimentation. Les habitats alternatifs amorcent une ouverture du champ des possibles. Cette ouverture suppose de faire un « pas de côté » pour repenser ou se substituer à l’institué et répondre aux besoins jugés insatisfaits ou mal satisfaits des populations vieillissantes « fragiles » et « dépendantes ». Cette recherche s’appuie sur des enquêtes empiriques menées dans plusieurs formules alternatives et sur un corpus de 49 entretiens directifs approfondis avec les différents acteurs qui évoluent dans les lieux (initiateurs, équipes de coordination et de médiation, aidants professionnels, familiaux et familiers, usagers). / This research studies alternative housings for the elderly with frailty and dependence. These new habitats forms have been built in France since the end of the 1970th in order to deal with the shortcomings of the gerontological facilities: the traditional nursing homes, which are highly criticized, and the home-care support. The projects leaders aim to reinvent the place to grow old and to create new welcome and support facilities for the elderly until the end of life. We define these innovated habitats as experimental laboratory which aim to respond, in a different way, the unmet need of the elderly with frailty and dependence.This PhD is based on empirical research conducted in several alternative housings and 49 semi-structured interviews with actors operating in these (projects leaders, coordination and mediation teams, professional families and friend’s caregivers, users). From a comparative and a comprehensive approach, we can address convergence and divergence of the alternative housing, understand the social experiment path, return the logic and the dynamics of reception and support methodologies, evaluate stress points between the modelled field with the initiators and the field with experienced by users, but we can also question the scope and meaning of the gerontological alternative in a broader perspective. Indeed, alterative housings are initiated in a context promoting values like autonomy and self- realization which may be seen as new normative injunctions.
4

Shaping the field

Perlina, Anna 18 November 2016 (has links)
Die vorliegende wissenschaftliche Arbeit rekonstruiert die Entwicklung der deutschen Psychologie zwischen der Eröffnung des ersten psychologischen Labors in 1879 und der Gleichschaltung durch das Nazi-Regime in den 1930er Jahren. Die Dissertation stellt den konzeptuellen und methodologischen Rahmen der psychologischen Disziplin anhand von drei Generationen von Pionierforschung dar. Hierbei wird herausgearbeitet, wie sich die frühe experimentelle Psychologie einen eigenen Platz zwischen den Natur- und Geisteswissenschaften kreiert. Die gestaltpsychologische Schule spielt darin eine entscheidende Rolle. Der zentrale Fokus der Arbeit liegt in der historischen Periode zwischen 1922 und 1936, über welche sich Kurt Lewins Untersuchungen zur Handlungs- und Affektpsychologie erstrecken. In dieser deutschen Schaffensperiode wurden der theoretische und methodologische Rahmen, sowie praktische experimentelle Designs erschaffen, welche die amerikanische Arbeit Lewins entscheidend prägten. Der Aufbau von Lewins berühmter Feldtheorie wird im Detail rekonstruiert. Die Dissertation zeigt auf, wie Lewin originelle psychologische Konzepte aus interdisziplinärer Erfahrung formte, und wie experimentelle Praktiken der Zeit die Entstehung eines immer komplexer werdenden Konzeptgerüstes herbeiführten. Anschließend wird die Bedeutung des Gestalt-Lewin-Falles für die Psychologiegeschichte erörtert. In die langfristige Wissenschaftsgeschichte ist Lewins Arbeit nicht etwa als gebündeltes Forschungsgebiet eingegangen. Stattdessen ist sie in so unterschiedliche Bereiche wie Entwicklungs- und Persönlichkeitspsychologie, Soziologie und Wirtschaftsmanagement eingeflossen und hat diese geprägt. / This dissertation represents a historical reconstruction of the development and transformation of German experimental psychology between the emergence of the first experimental laboratory in 1879 and its Gleichschaltung by the Nazi regime in the 1930s. It traces the evolution of the conceptual as well as the experimental framework of psychology over the course of these years following three generations of experimental research. Hereby, the work attempts to grasp how early experimental psychology negotiated its place between the humanities and the natural sciences. The project’s major focus lies in the period between 1922 and 1936, in which Kurt Lewin’s Berlin Experimental Program on Action and Emotions took place. The work specifically investigates the process of constitution of Lewin’s field theory, a system of concepts coined by Lewin in order to study psychological processes underlying human conduct. The dissertation shows how Lewin’s concepts emerged out of interdisciplinary sources, and how experimental practices in psychology triggered the emergence of new knowledge. Eventually, it is shown how the investigated historical case of Gestalt psychology in Berlin fits into and plays a decisive role in the long-term development of experimental psychology.

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