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 90 for “"low-amplitude"”.
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Low-frequency, low-amplitude MEMS vibration energy harvesting
… resonating MEMS structures cannot be used with low-frequency, low-amplitude and unpredictable nature of ambient vibrations. Bi-stable nonlinear oscillator based energy harvesters are developed for lowering the operating frequency while widening the bandwidth, and are realized at MEMS scale for …
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The effect of high-velocity, low-amplitude manipulation on suboccipital tenderness
High-velocity, low-amplitude (HVLA) manipulation is commonly advocated by manual therapists to relieve spinal pain and dysfunction. The aim of this controlled, single blinded study was to investigate whether HVLA manipulation of the occipito-atlantal (OA) joint had any lasting effect on pressure …
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A Search for Low-Amplitude Variability Among Population I Main Sequence Stars
… and evolution theories. The ability to detect low-amplitude variability among cluster members is directly related to the quality of the photometric results. Point Spread Function (PSF) fitting is the best method available for measuring accurate magnitudes within crowded fields of stars, while …
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The Effects of Exposure to Extremely Low-Amplitude, Low-Frequency Electric Fields on Skeletal Tissue, In Vitro
… to a capacitively-coupled electric field of low frequency (8-25 Hz) and extremely low amplitude (estimated 10<sup>-7</sup> V/cm in the culture medium) for 30 minutes.</p> <p>Using this model system it was found that alkaline phosphatase rich (ie; more differentiated) calvarial cells exhibited …
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The effect of high velocity low amplitude manipulation on the amelioration of cervical spine rotation asymmetries: is the cavitation important?
Background: High velocity low amplitude (HVLA) thrust techniques are commonly used by manual therapists. One of the primary goals of these techniques is to increase the range of motion within spinal segments. Still, there is much contention about the outcomes of the audible release or cavitation …
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A comparison between muscle energy technique and high velocity low amplitude thrust technique on gross trunk rotation range of motion
Muscle energy technique (MET) and high velocity low amplitude (HVLA) thrust technique are two techniques commonly used by osteopaths and other musculoskeletal therapists. Despite their widespread use, there has been very limited research to compare the efficacy of HVLA and MET for increasing gross …
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INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE
The Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. Arctic lemming population cycles may indirectly affect predation risk on alternative prey such as shorebird nests as they share predators. I examined the indirect …
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The effect of thoracolumbar high velocity low amplitude manipulation on gross trunk range of motion: is the direction of thrust important?
High Velocity Low Amplitude (HVLA) is a form of spinal manipulation commonly used by Osteopaths and other manual medicine practitioners. Despite its widespread use, there is little experimental evidence that supports the efficacy of HVLA in the thoracolumbar region or whether the direction of …
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Forces generated in high velocity, low amplitude manipulations of both the dominant and non-dominant rib 1 costotransverse joints: a pilot study
… characteristics of prone rib 1 High Velocity, Low Amplitude (HVLA) manipulations. Conclusions: Preload and peak thrust force closely related to each other and the production of a joint cavitation. No significant differences between the force/time characteristics of thrusts to dominant and …
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High Resolution Stratigraphy of Ordovician Carbonates, Kentucky: Evidence for a Greenhouse to Glacial Transition
… under warm, semi-arid conditions, under low amplitude sea level fluctuations on a relatively ice-free earth. The overlying Knox unconformity (~10 m.y. duration), formed by global eustatic sea level fall and tectonic uplift of the subducting margin at the onset of Taconic orogenesis. …
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Exploring the Nonlinear Dynamics of Tapping Mode Atomic Force Microscopy with Capillary Layer Interactions
… state oscillating solutions: (i) periodic with low-amplitude, (ii) periodic with high-amplitude, and (iii) high-periodic or irregular behavior. Furthermore, the branches of periodic solutions are found to end precisely where the cantilever comes into grazing contact with event surfaces in state …
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The effect of manipulation on pressure pain thresholds in the lumbar spine in asymptomatic participants
High-velocity, low amplitude manipulation is commonly advocated by manual therapists for the treatment of low back pain (LBP), however there is little evidence to support its efficacy. This study examined the immediate effects of a single manipulation intervention on pressure pain thresholds (PPT) …
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Devices for Extracellular Detection of Astrocytic Infraslow Electrophysiological Biomarkers
… are known from intracellular studies to exhibit low-amplitude, lowfrequency membrane potential fluctuations. Astrocytes are involved in various brain disorders and may contribute to direct current (DC) shifts. These shifts are observed during brain pathology and are considered potential …
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A direct D-bar reconstruction algorithm for complex admittivities in W2,∞(Ω) for the 2-D EIT problem
… are placed at the surface of a body and low frequency, low amplitude current is applied on the electrodes, and the resulting voltage value on each electrode is measured. By applying a basis of current patterns, one can obtain sufficient information to recover the complex admittivity …
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Osteopathic treatments and the techniques used in the treatment of acute mechanical low back pain
… efficacy of osteopathic treatments used in acute low back pain (LBP) is largely unknown. The study examined the number of student osteopathic treatments for uncomplicated acute LBP, as well as the specific osteopathic techniques, and combinations of treatments most commonly used. One hundred and …
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Design of High-Resolution SAR ADC for Detection of Sub-Cortical Neuron Action Potentials for BMI Applications
… systems that are capable of resolving both fast, low-amplitude action potentials (APs) and slow, higher-amplitude local field potentials (LFPs) under stringent power and area constraints. This thesis presents the design and simulation of a high-resolution, low-power successive approximation …
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The effect of thoracolumbar high velocity low amplitutde manipulation on gross trunk rotational range of motion: is the position of the technique important?
High velocity low amplitude (HVLA) thrust manipulation is commonly used by manual therapists to treat motion restrictions in the spine. In the thoracolumbar spine, there are two ways that the manipulation is usually carried out: one with the patient lying on their side and another with the patient …
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Estudo comparativo de diferentes métodos de alinhamento no eletrocardiograma de alta resolução
… for correct identification of high-frequency and low-amplitude signals, covered by interference. The optimization of the alignment method attenuates the effects of low pass filtering caused by alignment errors (AE), allowing the analysis of ventricular activation late potentials present in the QRS …
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DTM Generation in Forested Areas from Full-Waveform Airborne LiDAR Data
… method to improve DTM extraction by utilizing low amplitude pulses that are generated by terrain under vegetation, but undetectable using traditional Gaussian decomposition techniques. The secondary objective was to validate the developed methodology using ground reference data. An integrated …
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The effect of talo-crural joint manipulation on range of motion at the ankle joint in subjects with a history of ankle injury
… to determine whether a single high-velocity, low amplitude (HVLA) thrust manipulation to the talocrural joint altered ankle range of motion in subjects with a history of lateral ligament sprain. Male and female volunteers with a history of lateral ligament sprain were randomly assigned into …
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