Browsing Retrospective theses by Title
Now showing items 1244-1263 of 1604
-
Risk sensitive foraging by rats in the operant arena
(1988)The operant arena was used as the framework in which to study the theory of risk-sensitivity, A small colony of hooded rats was exposed to increasing work demands while given the choice between simultaneous fixed ratio ... -
Risk-sensitivity in a rat population under interval schedules of reinforcement : open and closed economies
(1995)A group consisting of eight male Hooded rats was tested for risk-sensitive foraging preferences in an eight station operant arena, under conditions of open and closed economies. The group could choose to forage at either ... -
Roadside floristic patterns and revegetation by using native plants in Terra Nova National Park, Newfoundland, Canada
(2004)This thesis reports on a study of roadside floristic patterns and revegetation (cultural methods) of newly constructed roadsides by using native plants along Trans Canada Highway (TCH) in Terra Nova National Park (TNNP), ... -
Robust and adaptive control via backstepping technique
(2005)Most of the control systems are designed using linear techniques, which have been well developed. Practical physical systems are typically nonlinear. Nonlinear control is one of the biggest challenges in modern control ... -
Robust control of DC-DC boost converter / by Hisham Mahmood.
(2008)In this thesis, a robust controller comprising of a PI with phase-lead compensator for a DC-DC boost converter designed using classical frequency response method is presented. The superior performance of this controller ... -
Robust control of multi-stage web systems
(2007)Web handling systems are widely used in industries such as pulp and paper, printing press, and steel milling. Tension variations in web materials are very common in operation and tension control is critical to the quality ... -
Rock magnetic and structural investigation of the Moss Lake stock and local area : western Shebandowan belt
(1995)The thesis area is located 120 km west of the City of Thunder Bay, Ontario, straddling the contact of the Quetico and Wawa subprovinces of the Archean Superior Province. Metasedimentary rocks of the Quetico Subprovince ... -
Rock magnetic studies of the CY-4 drillhole through the Troodos ophiolite, Cyprus
(2006)Rock magnetic properties of 50 specimens from a continuous section through the lower layers of the Troodos ophiolite in the CY-4 drill hole, reveal an alteration and palaeomagnetic history consistent with ocean spreading. ... -
Role of aquatic macrophytes in trophic status of Northwestern Ontario lakes
(1993)This research focusses on the development, refinement, and assessment of regional trophic status models for lakes of northwestern Ontario. Two companion papers describe the application of image analysis of aerial photographs ... -
Role of cognitive appraisal in the recovery from stress
(1988)The present study examined the effects of cognitive appraisal on heart rate recovery from a psychological stressor. Forty introductory psychology students were randomly assigned to either a threat or challenge condition. ... -
Role of inhibition of return in the safe driving of elderly persons
(2004)Elderly individuals represent a growing portion of our population and a growing number of elderly individuals are driving. A concern arises over the fact that elderly drivers are involved in more crashes than any other ... -
The role of repetition in free recall
(1972)Three experiments investigated the hypothetical processes of organization and frequency, which have been advanced to explain the repetition effect in multi-trial free recall learning. Each experiment examined recall over ... -
Role of service dogs for two children with autism spectrum disorder
(2005)This qualitative study investigated the role of service dogs for two children with autism spectrum disorder. The participants in this study were eight adults who all had direct and continuing interaction with a service ... -
Role of social comparison in exposure to athletic media images on body image, mood, and desire to exercise
(2002)The purpose of this study was to examine the role of social comparison and the impact of idealized athletic images in the media on body image and mood. The participants consisted of 90 undergraduate males and 132 ... -
Role of symptom presentation in the diagnosis and treatment of the depressed elderly : a closer look at anhedonia and dysphoria / Leah D. Clyburn. --
(2005)The main objective of this study was to examine how symptom presentation relative to anhedonia and dysphoria influences diagnosis and treatment patterns documented on the Minimum Data Set for long-term care. It was ... -
Roles of teacher assistants in elementary school special education settings
(1992)While the occupation of teacher assistant has become rooted in the Ontario School System no research exists concerning the roles these teacher assistants perform in Ontario. There is also a paucity of research which examines ... -
Root pruning, wrenching and overwinter cold storage : effects on the morphological and physiological condition of transplant Picea glauca [Moench] Voss nursery stock
(1984)The objectives of this thesis were to; 1) evaluate the effect of a single early spring root pruning followed by a series of five root wrenching treatments at three week intervals on the morphological condition of rising ...
