Browsing Electronic Theses and Dissertations by Title
Now showing items 3449-3468 of 3542
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Vegetation response to harvesting, harvesting and prescribed-burning and wildfire in Northwestern Ontario : patterns of reproductive strategies and nutrient accumulation
(1997)Initial species composition was investigated on a group of boreal mixedwood sites that had experienced various forms of disturbance. The hypothesis explored was that environmental changes caused by different disturbances ... -
Vegetative and sexual phenology, reproductive dynamics and bud differentiation in a clonal seed orchard of white and black spruce
(1981)To evaluate the importance of phenology and strobilus production in a clonal seed orchard of white and black spruce, 14 clones of each species represented by 4 ramets each, were selected from the Mattawin seed orchard. ... -
Verbal content and affective response in an interview : as a function of experimenter gaze direction
(1974)This study was designed to investigate the effects of one's looking or not looking at another's eyes upon the content of the other's speech and his affective response to the encounter. The relationships between experimenter ... -
Vibration control using switchable stiffness
(2015-01-13)Over the last decade, the switchable stiffness (SS) control strategy has seen renewed academic interest due to the need for effective vibration control techniques. The SS control strategy involves switching the system’s ... -
Vibration suppression and energy harvesting with a variant nonlinear energy sink
(2018)Vibration control is aimed to suppress or eliminate unwanted vibration to ensure proper operation of machines. On the other hand, energy harvesting intends to scavenge energy from ambient vibrations to power electronical ... -
Vibration suppression in a traversing mass-cantilever beam system
(2003)A cantilever beam carrying a traversing spring-mass system is modeled. Applications of the system include robot traversing on space trusses, loads moving along stacker cranes carrying moving loads in a large warehouse, ... -
Violence and masculinity in Hollywood war films during World War II
(2013-02-03)During World War II, the Hollywood studios produced an unprecedented number of war-themed films in order to help prepare American audiences for what was to come, as well as to profit from the popularity of anything pertaining ... -
Violent and aggressive students in Newfoundland and Labrador
(2002)Youth violence is a very real problem in North American schools. Understanding youth violence and aggression is key to developing effective school programs to reduce the number of violent acts in schools. This was a ... -
Virtual work from home and mental health: a mixed methods systematic review
(2021)Poor mental health is a risk factor for a number of chronic physical conditions and may impact individuals’ ability to remain in the work force (World Health Organization, 2004b). Further, the workplace itself may pose ... -
Visible light positioning systems under imperfect synchronization and signal-dependant noise
(2022)Optical Wireless Communication (OWC) is an enabling technology for sixth-generation (6G) and beyond communication networks. Visible light communication (VLC) is a crucial branch of OWC technology expected to meet 6G ... -
Vision-based control and autonomous landing of a VTOL-UAV
(2015-10-21)In recent years the popularity of quadrotor unmanned aerial vehicles (UAVs) has increased. Today, UAVs are widely used by military and police forces for surveillance. They are used by industry for such tasks as traffic ... -
Vision-based trajectory tracking algorithm with obstacle avoidance for a wheeled mobile robot
(2005)Wheeled mobile robots are becoming increasingly important in industry as means of transportation, inspection, and operation because of their efficiency and flexibility. The design of efficient algorithms for autonomous ... -
Visitors' attitudes towards wind farms : a study of the English Lake District National Park
(2011-07-19)The tourism industry is one of the largest in the world. Many nations derive considerable economic gain from tourism markets. At the same time, many nations are pushing for the development of newer greener sources of energy ... -
Visual cryptography with cheating shares
(2006)Visual cryptography is a technique that applies the human visual system to decode encrypted information, such as text, image and number, without any sophisticated devices and computing capabilities. Therefore, compared ... -
Visuo-perceptual task performance across the menstrual cycle in women with and without premenstrual symptoms: potential influences of estradiol and estradiol sensitivity on retinogeniculostriate, extrastriate, and elementary retinal-based smooth pursuit pathways
(2012-11-10)The present study examined whether women with premenstrual symptoms (PMS) exhibit a different pattern of performance on psychophysical tasks across the menstrual cycle in comparison to control women. Research has shown ... -
Walk, stop, search : the effect of simulated motion on visual attention
(2006)Responses in covert orienting of visual attention tasks (COVAT) produce a biphasic pattern of results. When the stimulus onset asynchrony (SOA) is less than 300 ms, reaction times (RTs) to cued targets are faster than ... -
Walking through anxiety : examining the role of expectancy in exercise / by Thomas Newman.
(2009)Exercise has consistently been found to reduce anxiety (Petruzello, Landers, Hatfield, Kubitz, & Salazar, 1991). However, the mechanisms underlying the effect of exercise on anxiety are unknown. The present study evaluated ... -
Walleye (Sander vitreus) movement ecology in Lake Winnipeg, Canada
(2020)Identifying differences in movement behaviour and the variance in behavioural strategies that may exist across a single species occupying a heterogeneous landscape can provide valuable ecological and evolutionary insights; ...