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 19 of 19 for “"force and motion"”.
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Force-and-motion constrained planning for tool use
The use of hand tools presents a challenge for robot manipulation in part because it calls for motions requiring continuous force application over a whole trajectory, usually involving large joint-angle excursions. The feasible application of a tool, such as pulling a nail with a hammer claw, …
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The Effect of Force Feedback on Student Reasoning about Gravity, Mass, Force and Motion
The purpose of this study was to examine whether force feedback within a computer simulation had an effect on reasoning by fifth grade students about gravity, mass, force, and motion, concepts which can be difficult for learners to grasp. Few studies have been done on cognitive learning and haptic …
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Microcomputer-based diagnosis and remediation of simple Aristotelian alternative conceptions of force and motion
… methods of teaching. If both the teacher and the student are unable to detect and change these conceptions, the student's ability to learn may be seriously impeded. A solution to this instructional dilemma would be to devise a method which a teacher could use to determine whether such …
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The Effects Of The 5e Learning Cycle Model On Students' Understanding Of Force And Motion Concepts
… by the National Research Council [NRC] (1996) and the American Association for the Advancement of Science [AAAS] (1989), a change in the manner in which science is taught must be recognized at a national level and also embraced at a level that is reflected in every science teacher's classroom. …
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Design of an air track for engineering and physics education
An air track is a valuable tool for examining force and motion in the classroom, providing a low-friction environment to observe phenomena. Unfortunately, currently available models have limited functionality and are prohibitively expensive for many schools. To improve access to this helpful …
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Improving the training of pre-service physics teachers in Malaysia using didaktik analysis
… approach to thinking about teaching and learning to the training of pre-service physics teachers in a Malaysian teacher training programme. The process of developing a specific content knowledge (real or true physics) was done through a didaktik analysis of specific physics content, …
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The frequency of alternate conceptions in some areas of mechanics amongst South African school pupils : a longitudinal and cross-cultural study
… Africa, was undertaken in order to determine and compare the incidence of various alternate conceptions in some areas in mechanics amongst pupils from standards 4 through to 9, i.e. from ages ca. 11 to 17, in selected schools in the Western Cape and Transkei, South Africa. After a careful …
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Characterizing reaction bandwidths in a position-controlled robotic arm
… robotic manipulators remain an industry standard but are ill-suited for guarded move approaches to advanced manipulation. Adding additional feedback with the expectation that a position-controlled system can account for it cannot guarantee successful implementation. To explore and define …
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A case study in troubleshooting electromechanical software-controlled systems : the InMotion² Robot
The InMotion² robot is a clinical version of the MIT-Manus robot, which was developed in the 1990s to help with upper limb rehabilitation of stroke survivors. In 2015, experiments were planned to use the InMotion² robot for studies of human force and motion control. During preparation for the …
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A Dynamic Primitives Hypothesis: a Descriptive Model of Human Physical Interaction
… tasks require simultaneous regulation of both force and motion. For example, even a task as simple as opening a door presents a challenge to the development of prosthetics, exoskeletons, and human-robot interaction. Motor neuroscience has reported systematic patterns of motion during free …
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Compacted Snow Testing Methodology and Instrumentation
… especially due to its high compressibility and temperature-sensitive nonlinear viscoelasticity. Snow mechanics has been intensively investigated by avalanche and army researchers for decades. However, fewer research studies have been published for compacted snow, commonly defined as snow …
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Dynamic Measurements with Scanning Probe Microscopy: Surface Studies Using Nanostructured Test Platforms of Metalloporphyrins, Nanoparticles and Amyloid Fibrils
… nanomaterials has been developed, using atomic force microscopy (AFM) combined with electromagnetic sample actuation. Instead of using a coated AFM probe as a magnetic sensor; our strategy is to use a nonmagnetic probe with contact mode AFM to characterize the vibration of magnetic and …
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Fabrication of nanostructured surfaces with well-defined chemistry using particle lithography
… with nanoscale control of surface chemistry and relative orientation of the nanomaterials on the surfaces. Particle lithography was used to produce periodic arrays of protein nanostructures. Monodisperse mesoparticles can be applied to rapidly prepare millions of uniform protein …
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Micro-scale scratching by soft pad asperities in chemical-mechanical polishing
In the manufacture of integrated circuits (IC) and micro-electromechanical systems (MEMS), chemical-mechanical polishing (CMP) is widely used for providing local and global planarization. In the CMP process, polishing pads, typically made of polyurethanes, play a key role. Due to the random, rough …
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Can a pre-training biomechanical pathway identify the most effective exercise to enhance a given group’s, subgroup’s or individual’s countermovement jump height?
… sports. While the drop jump, squat, jump squat and power clean training exercises are each purported to enhance maximal CMJ jump height, there are generally inconsistent findings regarding their effectiveness at doing so. The resounding implication of this is that a coach cannot be sure as to …
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Quantifying Human Balance Performance and Control to Inform Therapy
… balance is essential for daily activities and overall health. However, balance capability often declines with age or due to health conditions such as stroke, increasing fall risk. Falls among older adults are a major public health concern, affecting 14 million older adults annually in the …
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Design and Evaluation of a Powered Series-Elastic Cycloidal Ankle (CyAn) Prosthesis
… significantly due to rising rates of diabetes and obesity, highlighting an urgent need for advanced prosthetic solutions [1]. Individuals with lower limb amputations often face increased energy expenditure and secondary musculoskeletal conditions as a result of using conventional prosthetic …
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Design and Evaluation of a Quasi-Passive Variable Stiffness Ankle-Foot Prosthesis to Improve Biomechanics Across Walking Speeds
… to increasing prevalence of diabetes, obesity, and related dysvascular conditions [1]. Lower limb amputation often leads to secondary conditions such as knee pain, knee osteoarthritis, osteopenia, back pain, postural changes, and general deconditioning [2]. For people with transtibial …
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Ground reaction forces and control of centre of mass motion during gait : implications for intervention in cerebral palsy
… is the inability to generate adequate vertical force during the second half of the stance phase in cerebral palsy gait. Neither the mechanism nor the consequences of this inability are understood. It implies that the centre of mass (CoM) is inadequately supported with the potential for collapse …