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 20 for “"Imperfect Knowledge"”.
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Currency risk and imperfect knowledge: Cointegrated VAR analyses with survey data
… (CAPM), the Consumption CAPM, and the Keynes-Imperfect Knowledge Economics (IKE) gap model, which relate the risk premium to the exchange rate's variance, covariance with consumption, and deviation from Purchasing Power Parity respectively. The strongest support is found for the Keynes-IKE gap …
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Imperfect knowledge, decisionmaking and the firm: a theoretical investigation of efficient reward schemes
<p>This dissertation is an investigation into the relationship between the way in which factors of production are rewarded and the nature of the firm. A model of rewards is developed embodying risk and measurement costs. The problem of rewards to decision-makers under uncertainty is also addressed …
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PPP, UIP and Fisher parity: speculation or rational expectations? Evidence for four Latin American countries
… The second model follows the line of thought of Imperfect Knowledge Economics (IKE) where two equilibrium relations will be tested. According to IKE, even under the assumption that agents are rational, the presence of speculative behavior in financial markets helps explain the long swings often …
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ADAPTIVE COHERENT RECEIVERS FOR DIGITAL SIGNALS OVER THE GAUSSIAN CHANNEL WITH UNKNOWN CARRIER PHASE/FADING
… perform well under the real world situation of imperfect knowledge of the carrier phase/fading and can achieve a bit error probability performance close to that of perfect coherent detection. The results also indicate that the sequence estimation receivers which utilise a Viterbi-type algorithm …
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A management science approach for developing a decision model for portfolio rationalization of consumer personal computers
… leads to selection of configurations based on imperfect knowledge. The existing variety of configurations has imposed substantial complexity costs on Dell. Modeling this selection process as a Newsvendor "life-time buy" includes this variability while optimizing for profit. Estimated costs of …
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Cycle-to-cycle control of multiple input-multiple output manufacturing processes
… results are developed. Then, the limitation of imperfect knowledge of the plant model is imposed. This is consistent with manufacturing environments that require minimal cost and number of tests in determining a valid process model. The effects of this limitation on system performance and …
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Hillslope-scale soil moisture estimation with a physically-based ecohydrology model and L-band microwave remote sensing observations from space
… the global water, energy, and carbon cycles. Knowledge of soil moisture at scales of individual hillslopes (10's to 100's of meters) is critical to advancing applications such as landslide prediction, rainfall-runoff modeling, and wildland fire fuel load assessment. This thesis develops a data …
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The puzzling behavior of equity returns: The need to move beyond the consumption capital asset pricing model
… and the Rational Expectations Hypothesis with an Imperfect Knowledge Economics representation of forecasting behavior. I find that my alternative model performs better than the consumption CAPM in accounting for the time variation of stock returns.</p>
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Mapping the countryside: information for policy and management
… of an organisational culture of information use, imperfect knowledge and utilisation of available data, the need to meet changing information demands and the requirement to produce comparable local, regional and national habitat stock estimates. Many of the data deficiencies highlighted would …
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Corrections for Sample Selection Bias
… explicit selection variable is usually an imperfectly correlated proxy for a hypothetical true selection variable. Regardless of violated assumptions, such imperfect knowledge of the true selection variable will yield conservative estimates according to simulation results. It is argued in …
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The puzzle of long swings in equity markets: Which way forward?
… to determine which class of models -- bubble or Imperfect Knowledge Economics (IKE) -- provides the better account of short-term stock price fluctuations -- and thus long-swings -- on the basis of empirical evidence. However, it is not clear how to test the bubble models' implication that pure …
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Received Signal Strength-Based Localization of Non-Collaborative Emitters in the Presence of Correlated Shadowing
… in the presence of correlated shadowing with no knowledge of the emitter's reference power. A new non-linear least squares (NLS) DRSS location estimator that uses correlated shadowing information to improve performance is introduced. The existing maximum likelihood (ML) estimator and Cram\' er …
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Bayesian Methods to Characterize Uncertainty in Predictive Modeling of the Effect of Urbanization on Aquatic Ecosystems
… level, incorporating uncertainty resulting from imperfect knowledge, imperfect data, and environmental variability, and integrating multiple sources of available information about the system into the modeling construct. These challenges can be addressed by using a Bayesian modeling approach. …
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Combining Physics-based Modeling, Machine Learning, and Data Assimilation for Forecasting Large, Complex, Spatiotemporally Chaotic Systems
… in making our forecasts: incomplete scientific knowledge in the form of an imperfect forecast model, and past observations of the true system state that may be sparse and/or noisy. In this thesis, we ask if machine learning (ML) and data assimilation (DA) can be used to combine observational …
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Development of proxy seawater records from gorgonian coral skeletons
… observations in ocean circulation models is our imperfect knowledge of the time history of surface water concentrations. The technique developed here proves that gorgonian corals have the potential to provide a detailed time history of surface water tritium concentrations at a variety of …
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Effect of Exponential Correlation Model on Spectral and Energy Efficiency for Massive MIMO Systems
… We study the lower capacity bound based on imperfect knowledge of the channel. In the first part, we are considering a one cell system model with one base station that is equipped with N antennas and serving single antenna user. In the second part, a Massive MIMO system of a single cell is …
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An investigation of the pollution contribution of catchments surrounding the Knysna Estuary, with implications for stormwater management
… of runoff from catchments to the estuary is imperfectly understood. Mitigation measures designed based on imperfect knowledge may be inappropriate or fail to address the pollution concerns. A poor understanding of the world views of stakeholders could lead to the design of socially …
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Optimal Detection with Imperfect Channel Estimation for Wireless Communications
… linear channel estimator with perfect or imperfect knowledge of the Doppler spread in time-variant channels. We compare the performance and complexity of minimum mean square error (MMSE) and maximum likelihood (ML) channel estimators using the four BEMs, for the case with perfect Doppler …
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A comparative study of Libyan public housing
… do so is questionable. This can be attributed to imperfect knowledge, bothwith regard to resident's housing preferences and to the factors whichdetermine their satisfaction with the built environment.The result of rapid urbanization, a common characteristic of most developingcountries is the …
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HYSTAR: Hydrology and Sediment Transport Simulation using Time-Area Method
… introduced into watershed modeling because of imperfect knowledge and scale dependant spatial heterogeneity and temporal variability. Uncertainty analysis can provide a modeler, policy maker, and stakeholder with reliability information, better understanding, and better communication about the …