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 18 of 18 for “"Scanner data"”.
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Modeling Forest Canopy Distribution from Ground-Based Laser Scanner Data
… available, tripod mounted, ground-based laser scanner was used to assess forest canopies and measure individual tree parameters. The instrument is comparable to scanning airborne light detection and ranging (lidar) technology but gathers data at higher resolution over a more limited scale. The …
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Land Cover and Impervious Surface Mapping Using Multispectral Airborne Laser Scanner Data
… land cover classification of the remotely sensed data is a necessary step before impervious surface maps are compiled. Very high resolution, passive satellite imagery is the modern source of data for land cover classification and impervious cover mapping. However, shadowed areas and relief …
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An Approach to 3D Building Model Reconstruction from Airborne Laser Scanner Data Using Parameter Space Analysis and Fusion of Primitives
… was developed, which utilises airborne laser scanner data in order to generate 3D building models. These 3D building models may be used for technical and environmental planning. The approach has to follow certain requirements such as working automatically and robust and being flexible in use …
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Spatial and temporal variability of chlorophyll concentrations from nimbus-7 coastal zone colour scanner data in the Benguala upwelling system and the sub-tropical convergence region south of Africa
… collecting hydrographic and biological sea truth data in order to calibrate the CZCS measurements from the NIMBUS-7 satellite over the Benguela Upwelling region and along the east coast of South Africa during the period 1978 to 1981. A brief overview of the CZCS validation programme and its …
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Predictive demand models in the food and agriculture sectors : an analysis of the current models and results of a novel approach using machine learning techniques with retail scanner data
… the future of demand and available historical data. Consequently, the lack of an appropriate understanding of what is the actual food consumption trend, lead's the producers in some cases to make wrong bets, which eventually causes food waste, price volatility and excess commodities stock. The …
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Surface detection of alkaline ultramafic rocks in semi-arid and arid terrains using spectral geological techniques
… weathered and reduced to residual soil. The data used in this study were spectra obtained from field spectrometers (PIMA and GER IRIS MkIV) and airborne scanners (GEOSCAN MkII, GER IS and HyMap). These data were gathered at four sites within Australia. The data processing software packages …
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Three essays on differentiated products and heterogeneous consumer preferences: the case of table eggs
… label combinations differed across classes. Scanner data, which record actually purchased choices, are an important source of information to study consumer preferences. Diverging from the traditional demand approaches that are limited in studying differentiated product markets using scanner …
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Three essays on the demand system
This first essay investigates how scanner data affect demand elasticity estimates and develops methods for scientists to adapt estimated elasticities to analyses of specific policies. We conduct a meta-analysis of U.S. demand elasticities and find evidence that scanner data generate statistically …
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Advances in Applied Econometrics: Binary Discrete Choice Models, Artificial Neural Networks, and Asymmetries in the FAST Multistage Demand System
… re-evaluated. Using contingent valuation survey data, the paper shows that FFBANNs provide an alternative to the binary logit and probit models with linear index functions. Direct comparisons between the models showed that the FFBANNs performed marginally better than the logit and probit models …
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Essays on Consumer Behavior and Demand Analysis
… experience good market. Using empirical scanner data,we show evidence that consumers? switching rates among brands are higher than what brand characteristics and consumer heterogeneity can explain. The over-switching behavior may be consistent with consumers? brand satiation. As a result, …
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Use of ancillary data in a Landsat classification of a forested wetland
… Recent research efforts have used additional data to supplement the four bands of Landsat MSS data in an attempt to increase the accuracies of computer classifications. The goal of this study was to evaluate the use of vegetation-related ancillary variables for improving the performance of a …
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Studies of sediments in a tidal environment
… Mapper and Compact Airborne Spectographic Imager scanner data at High and Low Water, with concurrent sampling has enabled the relationship to be established between suspended sediment concentration, percentage organics, temperature and salinity and a marked continuity between the sea bed and some …
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Two-dimensional separate-sided surface height profiling of lumber
… consisting of industrial point and line scanners is used to obtain a surface profile of the entire (two-dimensional) top and bottom surfaces of a lumber board. Each surface profile is independent of the other and free of data contamination caused by relative motions between the measured …
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Essays in International and Monetary Economics
… and macroeconomic trends by leveraging micro data to answer macroeconomic questions. The first chapter explores the drivers of inflation inequality across households. In particular, it examines how households use heterogeneously the quality margin of the varieties they purchase to insure …
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A micro-analysis of the influence of retail promotions on the healthiness of breakfast cereal purchases.
… study employs a sample from Kantar Worldpanel scanner data using Scotland as a case study across breakfast cereal purchases. The primary contribution of this study is adding knowledge to the food economics literature on the role of retail promotions and the main novelty is that the study …
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Compressive cooperative obstacle mapping with see-through capabilities in mobile networks
… parts that can be sensed directly by the laser scanners) using occupancy grid mapping approaches. The parts that can not properly be mapped are then identified and mapped based on wireless channel measurements. We show how to integrate occupancy grid mapping with two reconstruction methods based …
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Essays on empirical industrial organization
… industries and utilize different types of data and methodologies, but they all fall under the umbrella of studying the behavior of firms and markets through the use of empirical techniques and data-based approaches. The first chapter, written in collaboration with Carlos Hurtado, …
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The longitudinal effects of HIV and ART on the developing brain: a structural MRI study using manual segmentation
… incorporation and integration of 10 year old scanner data with scans from previous ages on a different scanner was possible, as a result of decommissioning the 3 T Allegra scanner. Volumetric growth curves were fit for forty children using mixed effects models with subject-specific random …