Searched for: department%3A%22BioMechanical%255C%252BEngineering%22
(1 - 20 of 400)
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Bruinink, M. (author)In the near future a large increase in elderly population is expected. One of the solutions to this problem is to introduce service robots which can provide a day to day care, allowing elderly to live longer independently. However performing basic household tasks proposes many challenges as the robot will have to act in a dynamic environment and...bachelor thesis 2013
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Rademakers, C. (author)Assessment of the sodium/potassium (Na/K) pump functioning can play an important role in the early diagnosis of several polyneuropathies. However, currently no method exists that allows in vivo testing of the Na/K pump. Therefore, this study developed a test based on repetitive nerve stimulation at single motor units. In order to evaluate the Na...bachelor thesis 2010
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De Vries, K. (author)Performing complex surgical procedures laparoscopically is hampered by the loss of dexterity for the surgeon. The MIM has been developed to overcome those problems. This MIM was never tested. This report describes user tests performed with this MIM. Users applied lower forces to the test pads, but used more time and made more errors during...master thesis 2012
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Van der Hoeven, T.R.M. (author)Locking mechanisms are used in a wide range of applications including energy saving mechanisms in the field of robotics. In this thesis a new class of locking mechanisms is investigated: a combination between a singular- and a friction locking mechanism (singular-friction locker) which is statically balanced with one additional spring. This...master thesis 2015
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Antico, M. (author)In external beam radiation therapy (EBRT) for prostate cancer, prostate motion and, more generally, intra-fractional anatomical changes in the pelvic region can lead to significant plan efficacy degradation, possibly underdosing the target and overdosing the organs at risk (OARs). Since through image-guided radiation therapy (IGRT) it is...master thesis 2016
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Hulshof, J. (author)Robotic search is a very active field of research, and especially search with multiple robots is of high interest. A swarm of robots equipped with sensors could be used in a variety of useful settings such as border patrol, monitoring water quality of the ocean with underwater robots, or – in case of the FireSwarm project – for finding dune...master thesis 2013
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Van der Kruk, E. (author)Ice-skating is a rather special form of locomotion: the skater pushes sideward to propel himself forward; Insight in the details of this technique can help a speed skater improve his performance. The aim of this thesis is to develop a reliable and valid three-dimensional biomechanical model that simulates the motion of a speed skater, to gain...master thesis 2013
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Zha, X. (author)In the past two decades, dental implants have been an essential component of the public health. However, lack of a reliable and safe dental surgery imaging modality remains a major problem. Optical coherence tomography (OCT) is an interferometic optical imaging modality that is somewhat similar to B-mode ultrasound but utilizes infrared light...master thesis 2011
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Koolen, F.A. (author)This three-part paper discusses the analysis and control of legged locomotion in terms of N-step capturability: the ability of a legged system to come to a stop without falling by taking N or fewer steps. We consider this ability to be crucial to legged locomotion and a useful, yet not overly restrictive criterion for stability. Part 1...master thesis 2011
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Tournois, G.A. (author)Tensegrity robots are researched for robotic locomotion, as they have remarkable properties which makes them well suited for physical interaction with unknown and unstructured environments. So far, locomotion on rough terrain has not been demonstrate, but only on flat and moderately hilly terrain. Moreover, research merely focuses on rolling and...master thesis 2017
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Doedens, D.C. (author)CO2 powered actuators are a viable alternative in prostheses and robotics. The gas supply is generally limited in such applications, and calls for an optimal system pressure to minimize gas-consumption. Previous work which discusses the optimal pressure was not verifiable, or strictly theoretical. The theoretical work was unintuitive, but did...master thesis 2015
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Vissers, B.H.A. (author)When a humanoid robot is performing a certain task and is simultaneously maintaining balance, it is important that it can accurately measure its own state. The state is described by a number of variables, such as the center of mass (CoM) and the location of the feet. This information is used by the motion controllers to properly execute the task...master thesis 2012
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van Bodegom, R.M.G.P. (author)Background: Minimally Invasive Surgery (MIS) gained increasing support in the surgical community over the last decades. Due to the rigid tip of current used rigid instruments the maneuverability is limited during a procedure. To increase maneuverability steerable instruments have been developed. However current handheld steerable instruments...master thesis 2017
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Pedrero Pérez, A. (author)Introduction: Preterm neonates suffer frequent thermal alterations that result in increased morbidity and mortality rates. Thermal support is used to provide stability until thermal maturation is reached. The first manifestation of thermal control is peripheral vasoconstriction, estimated as the difference between central and peripheral...master thesis 2017
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Wang, Y. (author)Introduction: In this study, a novel anthropomorphic head phantom for quantitative image quality assessment in cone beam computed tomography (CBCT) is proposed. The phantom is composed of tissue equivalent materials (TEMs) which are suitable for ‘ home made’ fabrication methods such as silicone casting and 3D printing and equipped with inserts...master thesis 2017
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De Wit, M.R. (author)The aim of this study was to investigate if motion performance metrics for minimally invasive surgery could be derived from a two-dimensional measurement, for surgical procedures in which the movements are restricted to a defined plane. As it was assumed that for arthroscopy in the knee such behavior is present, a knee arthroscopy simulator was...master thesis 2012
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Van Vliet, B. (author)This study quantifies and explores the nonlinearities of human arm responses to large force perturbations while subjects (n=10) performed either a position or relax task. Continuous perturbations with large variations of amplitude levels (RMS values of 2.5, 7.5, 22.5 mm displacements) and pulse perturbations with large amplitudes (average of 16...master thesis 2012
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Lassooij, J. (author)The Minimally Invasive Manipulator (MIM) copies the movements of the hands of the surgeon to the tip of the instrument inside the operating area. The movement is mechanically copied using cables and pulleys. When the surgeon grasps and holds an object, the friction inside the MIM increases and distorts the force feedback in the remaining degrees...master thesis 2012
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Manoharan, V. (author)Epidural anaesthesia is a pain relief technique commonly performed on patients in labor. It requires insertion of a needle into patients back into the epidural space of the spine and inject anaesthetic. It is a blind procedure and anaesthesiologists rely only on the forces felt during needle insertion to determine the position of the needle tip....master thesis 2011
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Paiman, C.J.F.N. (author)Knowledge of the state of balance of the moving human is essential for the design of fall detection algorithms and wearable robotic controllers for balance assistance. Still, there is no known general method to make an online estimation of the state of balance of the walking human, with the limited and local sensor measurements that are usually...master thesis 2015
Searched for: department%3A%22BioMechanical%255C%252BEngineering%22
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