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 15 of 15 for “"Parallel channels"”.
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Mixed convection in vertical parallel channels connected at upper and lower plena
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1986.
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Spatial modulation in the underwater acoustic communication channel
… distribution of signal energy such that multiple parallel communication channels are supported by the single, physical ocean channel. Results from several experiments successfully demonstrate higher obtainable data rates and power throughput. Given a signal energy constraint, a communication …
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Design and characterization of a gel loading mechanism for an ultra-high throughput mutational spectrometer
… Spectrometer is being created to run 10,000 parallel channels of CDCE in order to correlate multiple point mutations in DNA with the diseases that they can cause, such as cancer. By separating the DNA in large populations, the underlying causes of such diseases can be identified. To …
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Instability of flow boiling in parallel microchannels
… to flow maldistribution and instabilities in parallel-channels flow. The thermal and hydrodynamic performance of a microchannel evaporator can drastically decrease, due to the presence of instabilities, and maintaining a set point for operational parameters can become challenging. …
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Microfabrication methods for the study of chemotaxis
… were generated to investigate fluid flow in microchannels for given geometries. Through computational modeling and experimentally-driven iteration of the design, features of the chamber were determined and geometry was established. Prototypes of the system were fabricated using soft lithography …
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Embedded Passivated-Electrode Insulator-Based Dielectrophoretic Chromatography
… constant flow. Another method is through mass parallel channels which each individually operate as a standard DEP particle trapping device. This allows for the summation of the maximum flow through the device due to its design layout.
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Thermal-hydraulic optimization for high production of low-enriched uranium based molybdenum-99
… to 22.77 kW. When the system is expanded to 10 parallel channels and the drain is fully opened, over 250 kW can theoretically be achieved, though the neutronics of the MURR reactor will likely limit this.
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Mitigating Inhomogeneity in High-Field MRI Excitations: Arbitrary Waveform Optimization and Multiphoton Parallel Transmission (MP-pTx)
… elements surrounding the imaging region. Parallel transmission (pTx) mitigates this issue by employing multiple high-power, independently controlled transmit elements for more precise excitation control. However, since the wavelength of the applied radio waves is shortened in tissue, the …
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Sum-rate maximization for two-way active channel with unequal subchannel noise powers
Wireless parallel channels refer to certain wireless links, where the information is conveyed from a source to a destination through a set of parallel orthogonal subchannels. In such channels, the transmitted signals undergo path loss, phase shift, and can also be affected by multi-path propagation …
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Two-Dimensional and High-Throughput Electrophoretic Separation of Proteins Using Polymeric Microchips
… features as microelectrode array for sixteen parallel channels on microchips. The system was able to simultaneously analyze sixteen different samples in parallel consisting of native proteins, amino acids, peptides, and oligonucleotides with conductivity. Finally, due to the diverse nature of …
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ARQ Techniques for MIMO Communication Systems
… SISO communication systems are generalized for parallel multichannel communication systems. The generalized ARQ protocols seek to improve the channel utilization of multiple parallel channels with different transmission rates and different packet error rates. The generalized ARQ protocols are …
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Reconfigurable System-on-Chip Architecture for Neural Signal Processing
… and real-time hardware that can handle massively parallel channels of neural data. The research presented here addresses this issue by developing real-time neural processing algorithms that can be implemented in reconfigurable hardware and thus, can be scaled to handle thousands of channels in …
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Polarization Division Multiplexing for Optical Data Communications
Multiple parallel channels are ubiquitous in optical communications, with spatial division</p>multiplexing (separate physical paths) and wavelength division multiplexing (separate optical</p>wavelengths) being the most common forms. In this research work, we investigate the viability</p>of …
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Long-term morphological response of tide dominated estuaries
… been analysed to understand the reason why tidal channels are convergent and to define the conditions under which the exponential law for width variation, which is so often observed in nature, is reproduced. The long-term evolution of the channel cross-section is investigated allowing the width to …
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Resource allocation and physical layer security in wireless communication systems
… is performed simultaneously over a number of parallel subchannels, two fairness-aware resource allocation problems are investigated in the sense that certain QoS constraints are considered. Typically, this kind of problems fall within the NP class because of the integer nature of the involved …