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 29 for “"magnitude estimation"”.
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An Investigation into the Perceived Urgency of Auditory Warnings
… different techniques were reviewed. Free modulus magnitude estimation, fixed modulus magnitude estimation, category estimation and cross modality matching were used to scale perceived urgency. On the basis of the cross modality matching validation procedure It was recommended that free modulus …
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Non-symbolic exact quantity representation in a language-impaired population
… quantities larger than three or four (analog magnitude estimation). To test this, previous studies have asked adult participants who have limited or no access to counting language to represent non-symbolic exact quantities—that is, for participants to create an array of objects equal in number …
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Creating tactile feedback with intelligent electrical stimulation to compensate for sensory impairment.
… a wearable EFS was designed to estimate the magnitude of pressure applied to the feet during standing and walking. The study also aimed to determine whether the EFS had an effect on posture control in standing and confidence in walking among individuals suffering from peripheral neuropathy. A …
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Kindergarten children's estimates of numerosity
… sets of up to 40 objects on different types of estimation tasks. The contributions of specific mathematics skills hypothesized to be prerequisites for estimation were also investigated. Kindergarten children were highly successful with judging quantities to be more or less than the reference …
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The Effect of Methodological and Personal Factors on Attitude-Behavior Consistency
… postulated that attitude measurement (i.e., via magnitude estimation or category scaling), the conceptualization of attitude (i.e., by form of multi-attribute model used) and a personal factor (i.e., internal-external locus of control) were in large part responsible for this weak predictive …
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Supporting children’s conceptual understanding of fractions with manipulatives and gesture
… children’s learning of fraction notation and magnitude estimation. Preliminary results suggest that three of the four conditions—a gesture-based lesson, a manipulatives and gesture-based lesson, as well as a pencil and paper-based control, but not the manipulative-based lesson—led to learning …
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Charting Presence in Virtual Environments and its Effects on Performance
… of each set using the technique of free-modulus magnitude estimation. The amount of time spent in the VE was also recorded. The results indicate that the VR system parameters manipulated and analyzed in this research did affect participants' subjective feeling of presence in the VE. Field of …
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The effect of instructions on scenic beauty ratings of riverscapes and the prediction of those ratings by environmental questionnaires
… of riverscapes for overall scenic beauty with a magnitude estimation scaling procedure. There were two groups of observers differing in the instructions each received. One group received biased instructions which emphasized the presence of industry while the other group received neutral …
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AREA-INTENSITY RELATIONSHIPS AND BRIGHTNESS
… was employed and in the second experiment, a magnitude estimation task was utilized. Brightness was found to increase when stimulus area increased. This brightness change was greater when stimulus luminance was high, than when stimulus luminance was low. Method of stimulus presentation had no …
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Designing a beam combiner for faint limiting magnitudes in optical interferometry
… the scientific motivation for a faint limiting magnitude beam combiner and the design requirements this placed on FOURIER. This is followed by a discussion of how the optical design was derived from these requirements. The simulated performance of the instrument is then discussed including the …
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An evaluation of the urgency, similarity, and identification of aural alerts with implications for flight deck use
… one of the four major flight deck functions. Magnitude estimation ratings revealed that subjects perceived differences between low urgency level alerts and moderate urgency level alerts and between low urgency level alerts and high urgency level alerts. Pair comparison ratings of similarity …
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Optimum magnification and perspective for non-single-lens-reflex camera systems
… systems. The psychophysical scaling technique of magnitude estimation was used to assess each subjects' degree of pleasantness for each print in a single stimulus presentation format. The subjects were actual consumers of non-SLR camera systems. The results indicate that a wide variety of …
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Physical and psychological factors in the use of mouthpiece force in trumpet playing
… of mouthpiece force using ratio production, magnitude production and magnitude estimation methods produced logarithmic sensory functions for both individual and group data. Judgmental accuracy was found to be unrelated to proficiency level.
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Factors affecting color appearance and measurement by psychophysical methods
… of surface color stimuli were scaled by both magnitude estimation and magnitude production psychophysical methods. Changes in color appearances resulting from variations in correlated color temperature of adapting illumination, luminance factors of samples, illuininance, and surround induction …
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The perceived urgency and detection time of multi-tone and frequency-modulated warning signals in broadband noise
… during the signal detection task. Free-modulus magnitude estimation quantified the relationship between auditory signal parameters and changes in perceived urgency. The method of paired comparisons was used to compare the perceived urgency of the auditory stimuli. Simple reaction time measured …
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Advanced functional and sequential statistical time series methods for damage diagnosis in mechanical structures
… temperature, humidity, damage location, damage magnitude and so on) which affect its dynamics, with each condition kept constant for a single commission cycle. Typical examples include mechanical structures operating under different environmental conditions, aircrafts under different flight …
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Tsunami Excitation Estimation from Real-time GNSS
… teleseismic distances, saturation of seismic magnitude estimation in the near field can result in significant underestimation of tsunami excitation for local warning (Wang et al., 2012). Moreover, DART buoy and tide gauge observations cannot be used to rectify the underestimation in the …
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Empirical Studies Concerning Aural Alerts for Cockpit Use Leading to an Aural Alerting Signal Categorization Scheme
… "normal" hearing threshold levels provided magnitude estimation urgency ratings for a series of aural alerts. These ratings revealed that subjects perceived low, moderate, and high urgency levels within each of four equally urgent aural alerting sets. In Experiment 2, 12 subjects having …
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Assessing Negative Side Effects in Virtual Environments
… a balance test, a vision test, and magnitude estimations of side effects were used to assess the incidence and severity of sickness experienced in the VEs. Other assessments, including a mental rotation test, perceptual style, and a questionnaire on pre-existing susceptibility to …
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A human spatial-chromatic vision model for evaluating electronic displays
… contrast detection, discrimination, and magnitude estimation experiments on the model. The results of these experiments correspond closely with published human performance data The utility of the display evaluation system was assessed by making image quality predictions for the display …
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