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 478 for “"sub-optimal"”.
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Sub-optimal Ultra-wide Band Receivers
… studied and compared several reduced complexity sub-optimal Ultra-Wide Band receivers. These receivers include auto correlation receiver, the square value detector and the absolute value detector are studied. We consider OOK and PPM modulation schemes. We examine these schemes and the receivers …
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A study of sub-optimal control laws
Electronic Thesis
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Capacity loss due to sub-optimal water-pouring
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Player Capability and Locally Sub-Optimal Behavior in Strategic Games
… The first topic is the emergence of locally suboptimal behavior in finitely repeated games. Locally suboptimal behavior refers to players playing suboptimally in some rounds of the repeated game (i.e., not maximizing their payoffs in those rounds) while maximizing their total payoffs in the …
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The Role of Situational and Dispositional Factors on Sub-Optimal Performance
Pressure is known to decrease performance for well-practiced tasks. Research has found that pressure decreases performance for those with high self-consciousness when distracted, but the effects of pressure and distraction are not known for those with low self-consciousness. Therefore, the purpose …
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Assessment of Hard Red Spring Wheat Germplasm for Germination in Sub-Optimal Temperatures
… Improved germination performance in sub-optimal temperatures, or cold temperature germination tolerance (CTGT), is therefore a desirable characteristic of HRSW grown in the North Central Great Plains region. Fifty HRSW genotypes were evaluated for germination and growth rates at ten …
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Survival and recovery of Escherichia coli O157:H7 during starvation at sub-optimal temperatures
… from this study showed that formation of a VBNC sub-population can be induced by starving E. coli O157:H7 at sub-optimal temperatures. Five E. coli O157:H7 strains were used in this study; NCTC12900 as a reference strain, three New Zealand clinical isolates and a New Zealand bovine isolate. Cells …
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Population dynamics of Tribolium castaneum (red flour beetle) under optimal and sub-optimal conditions
Population dynamics of red flour beetles, Tribolium castaneum (Herbst) was determined using three different sizes of grain patch (bulk), specifically, small (0.03 kg wheat), medium (2 kg wheat) and large (14 kg wheat), at different temperature profiles. The temperature profiles tested were 21, 25, …
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The kinetics and thermodynamics of human erythrocyte freeze-thaw damage at sub-optimal cooling rates.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1977.
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The impact of sub-optimal international portfolio allocations on cost of capital, stock market development and investor protection standards
… findings suggest that provision of encouraging optimal international portfolio allocations to increase risk sharing, could be a crucial policy measure for governments. Policy makers in emerging countries can improve macroeconomic fundamentals and good governance to attract and retain foreign …
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How Informational Imperfections Lead to Sub-Optimal Solutions in Health Savings Plan and Potential Remedies in a Competitive Marketplace
<p>In the growing trend of consumer-driven health insurance, more consumers than ever have access to a high-deductible health plan paired with a health savings account, where consumers can save pre-tax income for healthcare but also face higher out-of-pocket prices, in hopes that consumers will …
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The political economy of oil in Nigeria: How oil's impact on rent distribution has contributed to Nigeria's sub-optimal economic performance
… on rent distribution contributes to Nigeria's substandard growth in two ways; directly and indirectly. Regarding the first dimension, the effect is indirect, as oil's impact on formal rent distribution becomes a driver of conflict, which in turn adversely affects the economy's growth …
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Control strategies for exothermic batch and fed-batch processes A sub-optimal strategy is developed which combines fast response with a chosen control signal safety margin. Design procedures are described and results compared with conventional control.
… of exothermic processes. In this thesis, a sub-optimal control strategy is developed through utilizing the dynamic, simulation tool. This scheme is built around easily obtained knowledge of the system and still retains flexibility. It can be applied to both exothermic batch and fed-batch …
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Optimal Bond Refunding: Evidence From the Municipal Bond Market
… when the option is in-the-money. Usually it is optimal for the holder of an in-the money American option to wait rather than exercise immediately, because the option has time value. It is rational for the holder to exercise the option when the total value of the option is no more than the …
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Semi-active control of elastic and inelastic building structures with piezoelectric friction dampers
… damper placement in practical applications, a sub-optimal and heuristic procedure was developed to distribute PFDs on the structure. The efficiency of the sub-optimal procedure was investigated with a 3-story benchmark building. Finally, the effectiveness of the control strategy was verified …
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A novel method for power system stabilizer design
… an acceptable state of equilibrium after being subjected to a finite disturbance. In the evaluation of stability, the focus is on the behavior of the power system when subjected to both large and small disturbances. Large disturbances are caused by severe changes in the power system, e.g. a …
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Combining local and global optimization for planning and control in information space
… mean and covariance. In an online phase, a sub-optimal trajectory is found by the global Dijkstra's search algorithm, which ensures the balance between exploration and exploitation. Moreover, we use the iterative linear quadratic Gaussian algorithm (iLQG) to find a locally-feedback control …
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Fueling an Energy Transition: Designing an Optimal Portfolio of Competing Fuels Under Uncertainty
… fuels, as neglecting these factors can lead to sub-optimal immediate capacity investment decisions, and regret, measured as sub-optimal private gain. (2) Incorporating stochastic modeling is also required for firms. We show that deterministic models lead to sub-optimal capacity investment …
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An information theoretic study of reduced-complexity receivers for intersymbol interference channels
The complexity of the optimal receiver for communications over a discrete-time additive Gaussian intersymbol interference channel typically grows exponentially with the duration of the channel impulse response. Consequently, practical sub-optimal receivers are often designed as though the channel …
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Predictive and adaptive extremal control
The time-optimal predictive control strategy for second order relay or bang-bang control systems is investigated along with modifications of this strategy for third order systems. One basis of this strategy is the utilization of a model, a replica of the plant, run in a fast-time mode so as to …
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