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 “"Capacity Limit"”.
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Processing of quantitative information, investigated with fMRI.
… that the number-sensitive system is liable to a capacity limit for higher numerosities, which could be caused by the use of lateral inhibition. We further suggest that the implementation of this lateral inhibition is dependent on the particular task set, and that the capacity limit is not present …
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Capacity planning under demand and manufacturing uncertainty for biologics
… to plan their production for the next 10 years. Capacity planning is largely driven by the long-term demand and its forecast uncertainty. The impact of uncertainties at manufacturing level, such as factory productivity and production success rate, are not entirely taken into account since only …
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Communication for wideband fading channels : on theory and practice
… of signaling schemes approaching the wideband capacity limit. This work thus leads to enhanced understanding of wideband fading channel communication, and to the proposal of novel efficient signaling schemes, which perform very close to the optimal limit. The potential and limitations of such …
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Novel Adaptive Array Algorithms and Their Impact on Cellular System Capacity
… for AMPS and CDMA signals. The theoretical capacity limit using an adaptive array at the base station for an AMPS cellular system is derived in this work. One of the significant contributions in this research is a macrocell channel model which provides angle-of-arrival (AOA) statistics of …
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Analysis of tolerable capacity limits of intermittent photovoltaic power connected to the Namibian national electricity grid
… intermittent solar PV power and to determine the capacity limit beyond which the Namibian electricity grid system will become unstable due to an increase in intermittent solar PV systems feeding power into the grid system. Data of interest was obtained from collected reports, journal articles, and …
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An Optimization of Thermodynamic Efficiency vs. Capacity for Communications Systems
… the definitive source for analyzing information capacity of a communications system but his formulation does not predict an efficiency relationship suitable for calculating the power consumption of a system, particularly for practical signals which may only approach the capacity limit. This work …
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Higher order numerical schemes for propagation of wind wave spectra
… appreciable size, computational time and storage capacity limit resolution to relatively coarse grids in all four dimensions. Propagation schemes used in these models, typically the 1st order upwind scheme, encounter difficulty arising from the poor directional resolution (typically 30 degrees) in …
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Non-Binary Coded Modulation for FMF-Based Coherent Optical Transport Networks
… communication. Current trends indicate that high-capacity demands are not going to be saturated anytime soon. From Shannon's theory, we know that information capacity is a logarithmic function of signal-to-noise ratio (SNR), but a linear function of the number of dimensions. Ideally, we can …
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A study of covert queueing channels in shared schedulers
… reliable data transmission rate, i.e., the capacity, of this channel. Next, we extend the model to include a third user who also uses the shared resource and study the effect of the presence of this user on the information transmission rate. The solution approach presented in this extension …
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China's energy intensity and its determinants at the provincial level
… the coastal regions is studied. I find that the capacity limit of railways has indirectly affected the decline of China's energy intensity. The second part adopts methodology similar to that used by Sue Wing (2008), as well as Metcalf (2008) paper. I have created two indexes to decompose changes …
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Market impact of software radio : benefits and barriers
… sectors. A/D converters and semiconductors capacity limit the full implementation of these scenarios. Battery life is a further problem for SR devices. SR disrupts the traditional wireless value chain: general-purpose processors will capture market share from dedicated semiconductors; …
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Electrophysiological correlates of multiple object processing
… multiple objects simultaneously by selecting a limited number of locations and binding them to basic visual features. A second later stage related to visual working memory encodes in greater detail the indexed objects leading to their full representation. In the present thesis I investigated the …
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High speed optical communication systems: From modulation formats to radically new fibres
… links closer and closer to their maximum capacity. The research community has clearly identifying the coming approach of the nonlinear Shannon limit for standard single mode fibre [1,2]. It is in this context that the work on modulation formats, contained in Chapter 3 of this thesis, was …
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Simulation-based fragility relationships for unreinforced masonry buildings
… analysis of URM structures. Using this data, capacity diagrams are generated, from which damage exceedance limit states are defined. Demand is simulated using synthetically derived accelerograms representative of the CEUSA. Structural response is evaluated using an advanced capacity spectrum …
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The coloured cube test and the coloured mental rotation test: two new measures of spatial ability and mental rotation
… It was concluded that the magical number 4, a capacity limit in attention and short-term memory (Cowan, 2001), can also be observed in MR, due to the Good Gestalt of the 4-cube aggregates.
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EEG-Based Control of Working Memory Maintenance Using Closed-Loop Binaural Stimulation
… behavior. Individuals exhibit a typically small capacity limit on the number of items that can be simultaneously retained in working memory. To modify network connections and thereby augment working memory capacity, researchers have targeted brain areas using a variety of noninvasive stimulation …
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Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater
… problem in the U.S. Phosphorus (P) is often the limiting nutrient for harmful algal blooms and the best target to prevent degradation. Natural treatment strategies such as constructed wetlands (CW) demonstrate effective and economical P management but obstacles exist to implementation. Biological …
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Coherent versus non-coherent space-time shift keying for co-located and distributed MIMO systems
… for the sake of approaching the channel capacity limit, which are designed with the aid of EXtrinsic Information Transfer (EXIT) charts.<br/><br/>The basic STSK concept is first proposed for the family of co-located MIMO systems employing coherent detection. More specifically, in order to …
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Systems informatics and analysis for optimization of biomass feedstock provision
… demand, transportation mode, and facility capacity limit are the key factors affecting the production costs. To better understand the development of biofuel production, Dynamic BioScope model, a multi-period strategic planning model, was developed to address how a biomass provision system …
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Towards Quality of Service and Fairness in Smart Grid Applications
… the power distribution grid will reach its capacity limit at peak load times if it is not expensively enhanced. Alternatively, smart flexibility management that controls user assets can help to better utilize the existing power grid infrastructure for example by sharing available grid …