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 980 for “"Random sampling"”.
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Optimizing random sampling of daylong audio
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Gitterbasenreduktion mit Random Sampling und heuristischen Erweiterungen
… der Diplomarbeit "Gitterbasenreduktion mit Random Sampling" werden verschiedene Modifikationen am ursprünglichen LLL- bzw. BKZ-Verfahren vorgenommen: Es wird der von C. Schnorr entwickelte Ansatz, den LLL-Austauschschritt um Tiefeneinfügungen zu erweitern, aufgegriffen und eine alternative …
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Multidimensional random sampling for Fourier transform estimation
… signals. The calculations are based on random sampling, where the sampling points are nonuniformly distributed according to strategically selected probability functions, to provide new opportunities that are unavailable in the uniform sampling environment. The latter imposes the sampling …
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Random sampling as a clutter reduction technique to facilitate interactive visualisation of large datasets
… this work is to investigate the use of dynamic random sampling for reducing display clutter. Although randomness has been successfully applied in many areas of computer science and sampling has been used in data processing, the use of random sampling as a dynamic clutter reduction technique is …
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Using Random Sampling Consensus (RANSAC) to Detect Errors in Global Navigation Satellite Systems (GNSS) Signals and Data
… phase (TDCP), provide for error reduction. The random sample consensus (RANSAC) method allows for the smoothing of data, even when there are a lot of gross errors present in the data set. The residuals from RANSAC and TDCP were studied to determine if they can be used to detect and identify …
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Sampling strategies for forest aerial detection survey in Colorado
… my dissertation was to identify an appropriate sampling strategies to archive good estimates of total area damaged, to decrease survey cost, and to increase safety by reducing the amount of flights. To approach this goal, four sample designs for estimating total area damaged caused by various …
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The development and application of statistical sampling regime to map out hydrocarbons in sediments.
… thesis investigates and develops a stratified random sampling design for sediments in an offshore oil field environment. The sampling area was partitioned equally into sixteen zones. Stratification was based on the near-field and far-field areas, and the number of samples in each zone was …
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Evaluation and prediction of world records and ultimate performance in track and field
… outperform men and if so, when;3) develop a new random sampling model to predict the world record and ultimate performances based on the assumption(testable) that the performance has already reached an asymptotic level and the best performance population will best able in the next 50 or more …
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Methodology for Determining the Variance of the Taylor Factor: Application in Fe-3%Si
… and window size is explored using both a random sampling method and a previously developed statistical relationship. The results from the random sampling method correlated well with the statistical variance relationship when the magnitude of the variance was greater than that of the …
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Incorporating GIS topographic information in forest inventory estimates
… as opposed to the more traditional method of random sampling. Through the use of such a procedure, the potential for more cost effective estimations is available. The use of this same procedure for periodic re-inventory estimations could also provide a more precise estimate. The model-based …
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Bridging Cognitive Gaps Between User and Model in Interactive Dimension Reduction
… clusters, we implemented a solution utilizing random sampling. A quantitative analysis of the random sampling strategy was performed, and the results demonstrated that the strategy improved Andromeda's capabilities in constructing and deconstructing clusters. We also applied the random sampling …
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Improving Precision in Forest Inventory through Small Area Estimation for Loblolly Pine Plantations in Coastal Georgia
… stand level attributes, and C) the effects of nonrandom field plot placement in stands of interest when using unit-level SAE. Findings indicate that higher precision is achievable with greater variance stability than what is possible from very small samples of field data alone. This was true for …
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An Assessment of the Discommodity Effects of Swine Production on Rural Property Values: A Spatial Analysis
… a source is spatially limited. Stratified area sampling, taking all observations within a certain distance band, performs better than random sampling. Finally, spatial non-linearities in property value arising from the rural-urban fringe need to be accounted for as land use becomes increasingly …
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Assessment of the Implementation of Land Surveyed Projects for Human Settlement Development: A Case of Ilala Municipal Council
… research design was adopted where by a purposive sampling technique simple random sampling and systematic random sampling were used due to involvements of various respondents to obtain a sample of 200 respondents. Interview questions and questionnaire was the main instruments used in data …
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challenges in running evening class programme at the institute of adult education of Moshi municipal centre in Kilimanjaro region, Tanzania
… in Kilimanjaro region, Tanzania Through random sampling 9 centres were selected, one regional resident tutor for IAE in Kilimanjaro and 9 center coordinators were purposively selected. Through simple random sampling four teachers and 26 learners picked from 9 centres to make a total of …
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The Influence of Working Conditions on Teachers’ Job Satisfaction: the Case of Kisarawe District Public Secondary School Teachers, Tanzania
… teachers sample was selected using purposive random sampling strategy, where by schools were chosen using stratified simple random sampling. The data analysis was done using tables of simple frequency distribution, percentages, graphs, and charts. The findings reveal that teachers work in poor …
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An Assessment of Teachers’ Turnover and its Impact on Academic Performance in Government Secondary Schools in Mbozi District, Tanzania
… Mbozi District. Stratified and simple random sampling techniques were used. Stratified was used to select schools from rural and urban areas while simple random sampling was used to select 200 respondents. Data collection methods were; documentary search, questionnaires and interviews. …
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Perceptions of trained and untrained entrepreneurs regarding internal and external business problems and their implications for training
… Group. The respondents were selected through random sampling. Responses regarding the external and internal problems encountered by both groups as well as their causes were coded around common themes before being analyzed.
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Assessment of the food safety knowledge, attitudes and handling practices among food handlers in hospital facilities of Mufulira district, Zambia.
… for handling food within the hospitals. A random sampling technique was employed to choose the target group. A sample of 100 individuals was selected using systematic random sampling, with 35 participants from Hospital X, 20 from Hospital Y, and 45 from Hospital Z. Data on knowledge, …
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