Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 83 for “"Walkers"”.
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Abstract Models of Molecular Walkers
… have led to designs for artificial multi-pedal walkers that follow tracks of chemicals. The walkers, called molecular spiders, consist of a rigid chemically inert body and several flexible enzymatic legs. The legs can reversibly bind to chemical substrates on a surface, and through their …
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Motion-reversal in colloidal walkers
In this research, the manipulation of colloidal systems composed of superparamagnetic particles in water is studied by a simulation method. In response to an external magnetic field, the dipoles drive the beads to self-assemble into chains, which rotate and consequently move across a nearby …
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Recurrent Gait of Anthropomorphic, Bipedal Walkers
… environment. Specifically, two rigid-bodied walkers that can sustain anthropomorphic gait down an inclined plane with gravity being the only source of energy were studied using standard dynamical systems methods. This includes calculating the stability of periodic orbits and varying the …
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Meanings and motivations among older adult mall walkers: a qualitative analysis
… initially responding to medical advice to walk, walkers paid little or no attention to medical problems. These older adults did not continue to mall walk in response to expert medical direction. This finding suggests that health promoting activities should not rely on the continuing influence of …
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Investigating route-choice by recreational walkers in the English Lake District
… in evidence necessitates a closer investigation. Walkers vary widely in the frequency of their walks, how important walking is in their tourism activity, and their motivations and preferences in walking environments. A combination of data collection methods involved a qualitative programme of 23 …
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DNA Walkers: Emerging Analytical Applications, Biomolecular-Nanomaterial Probes and Biomolecule Sensors
DNA walkers are a unique class of dynamic DNA devices that move nucleic acid walkers processively along designated one-, two-, or three-dimensional tracks. Because of the unique mechanical motion, dynamic interaction, and capabilities for signal amplification, programmable signal transduction, high …
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Characteristic Classification of Walkers via Underfloor Accelerometer Gait Measurements through Machine Learning
… effectively. In this work, gender and weight of walkers are classified via machine learning or pattern recognition techniques. Accelerometers mounted beneath the floor of Virginia Tech's Goodwin Hall measured walkers' gait. These acceleration measurements serve as the inputs to machine learning …
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The effects of video self-modeling on walking skills of preschoolers using walkers
… walking skills of preschool children using walkers. A multiple baseline, single-subject design was used with three preschool age children that measured the number of steps taken. After establishing baseline with each child, they each were shown a short three minute movie of themselves …
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Synthetic creation of a chemotactic system via utilization of magnetically actuated microrobotic walkers
… utilized magnetically actuated microrobotic walkers. The system used a rotating magnetic field that once actuated induced the magnetic beads to self-assemble into microrobots and walk on surfaces. The velocity of these microrobotic walkers could be modulated by the frequency and the number of …
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Modelling and Simulation of the Nonlinear Dynamics of Arrays of Coupled Filaments for Robot Walkers
… for developing robust terrestrial robot walkers capable of adaptive and efficient movement.
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Synthesis of linear copolymers and of polymer brushes substituted with spiropyran groups : a step towards light driven molecular walkers
This dissertation is concerned with the synthesis and properties of different well-defined complex polymer structures based on functional acrylates and methacrylates by means of modern controlled polymerization procedures such as atom transfer radical polymerization (ATRP) and reversible …
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Web Walkers, A Phenomenological Study of Adult Native American Distance Learning Experiences: Toward a Standard Model of Indigenous Learning
This phenomenological study investigated the experiences and perceptions of eight female adult Native Americans distance learners. To understand the complex issues of Native American education and distance learning, the literature review included the history of the educational policy directed …
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Individual Differences in Spatial Memory Performance at 12 Months of Age: Contributions from Walking Experience and Brain Electrical Activity
… with different levels of walking experience (non-walkers, novice, experienced). In accordance with this model, a trend was shown for novice walkers to have higher EEG power values than both non-walkers and experienced walkers only in the central region. Walkers were also found to score higher on …
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To labor as an Indian travels: what the Spokan Indians taught the Eells and Walkers, early missionaries on the Columbia Plateau
… from each other. The story of how the Eells and Walkers related to the Spokan is different from other missionary tales. Their peaceful existence and daily cultural exchanges shines a gentler light on this era of transition on the Columbia Plateau. Their story should not distract from what …
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Contributions of physical activity, body composition, age, and nutritional factors to total and regional bone mass in premenopausal aerobic dancers and walkers
… aerobic dancers had greater bone mass than walkers. Another purpose was to identify body composition and nutrition factors related to total and regional bone mass in physically active and sedentary premenopausal women. It was hypothesized that aerobic dancers would have the highest and …
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Designing outdoor spaces to support older adult dog walkers: A multi-method approach to identify and prioritize features in the built environment
… built environment pertinent to older adult dog walkers. Existing literature served as the basis for identifying neighborhood design features associated with general walking and dog walking. Through the use of a three round Delphi study, 25 experts from urban planning and design, management of …
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Improving community walking after stroke; the effect of dual task treadmill training on gait, cognition and brain control mechanisms of dual task walking in chronic stroke survivors
… In a cross-sectional trial, 27 limited community walkers were compared to 23 moderate-to-full community walkers. A significant larger proportion of limited community walkers were not confident about walking in the community compared to moderate-to-full community walkers (p = 0.042). Moreover mean …
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A Novel Graphic Syntax: An investigation into how a GPS-enabled wayfinding interface can be designed to visually support urban recreational walkers’ situation awareness
… interviews are conducted with urban recreational walkers/wanderers. Analysis of the data reveals participants’ motivations to walk, their experience of exploratory wayfinding, as well as their use of wayfinding materials in general and GPS-enabled technology in particular. With regard to the …
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A Comparison Of Energy Expenditure And Prediction Equations During Walking Or Running Corrected For One Mile In Normal Weight And Overweight African American, Asian, And Caucasian Adults And Cross-Validation Of The Equations
… to compare EE in three groups (normal weight walkers, overweight walkers and runners). Multiple regression analysis was employed for EE prediction, and a dependent t-test and chow statistical test were used to cross-validate. The results shothat EE in runners was significantly higher than that …
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Mapping the Self: Reconciling Identity through an Expansion of the American Road Genre
… the highway, a discussion of trains, boats, and walkers and their alternative roads must also be included in the genre. Each method of transportation expands the genre by adding new themes and ideas. Hobos and tramps can take to the road in search of community in order to discover more about …
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