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.
Results
Showing 1 to 12 of 12 for “"distortion free"”.
-
Fabrication of distortion free x-ray masks using low stress tungsten
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
-
Damage detection and monitoring for tunnel inspection based on computer vision
… inspection reporting, which can create an almost distortion-free mosaic of tunnels, thus allowing a large area of tunnels to be visualised. The system relies on Structure from Motion (SFM), which enables the system to cope with images with a general camera motion, in contrast to standard mosaicing …
-
Distortion Correction in LODOX StatScan X-Ray Images
… a background and description of a method of distortion correction in x-ray images produced by the LODOX StatScan machine. The distortion correction of an object's x-ray image is of particular interest in the medical field, particularly for prosthetics, implants, and orthopedic work. It is …
-
Voltage-Gated Sodium Channel Activity in Mouse Skeletal Muscle Fibers: Normal Gating and Defects Associated with Periodic Paralysis Mutants
… used to confirm sufficient voltage control and distortion-free Na+ currents. The gating properties of endogenous Na+ currents were measured and compared between two mouse strains, C57BL/6 and 129-E. The most dramatic finding was a hyperpolarized shift in the voltage dependence of activation (-25 …
-
Injector Characterisation Measurement Technology for a Production Environment
… and demonstration that post injection rate distortion is a product of fluid friction from the tube walls before the sensor port. Additional contributions of this work included a 1D rate tube model, novel cepstrum signal noise and fluid properties analysis, distortion free injection rate …
-
Ultra-long haul optical fibre transmission systems
… and non-linear effects of the fibre allow distortion free transmission. However, the generation of pure solitons is difficult but must be achieved if the uncontrolled transmission distance is to be maximised. This thesis presents a new technique for the stabilisation of an erbium fibre ring …
-
Synthesis of Ultra-Wideband Array Antennas
… entire bandwidth of the signal in order to avoid distortions. Factors contributing to bandwidth limitation of arrays include array factor, radiation characteristics of the array element, and inter-element mutual coupling. Strictly speaking, distortion-free transmission or reception of …
-
Submicron-resolution Photoacoustic Microscopy of Endogenous Light-absorbing Biomolecules
… typically targets fluorescent markers, label-free PAM avoids the major concerns that the fluorescent labeling probes may disturb the function of biomolecules and may have an insufficient density. This dissertation aims to advance label-free OR-PAM to the subcellular scale.</p><p>The first part …
-
Dielectric characterization of materials and lossy filter design using reflected group delay
… from outside. Filters are expected to provide distortion free transmission to the signals in the passband and thus require flat in-band response and an adequate amount of out-of-band rejection. Filter technologies employing coaxial, waveguide and dielectric resonators can meet these …
-
Design of indoor communication infrastructure for ultra-high capacity next generation wireless services
… in DAS can be replaced with low-cost, broadband free-space optical links, termed radio over free-space optics (RoFSO) links. RoFSO links enable the implementation of very high density DAS without the need for prohibitively expensive cabling infrastructure. A 16m RoFSO link requiring only manual …
-
Impact of secondary barriers on CuIn1-xGaxSE2 solar-cell operation
… CdS/CuGaSe2. Large conduction-band spikes cause distortions in diode current-voltage (J-V) curves of solar cells. No CIGS-alloy forms a sufficient spike with CdS to create J-V distortions under regular white-light illumination. Even small spikes, however, can create substantial current-limiting …
-
Distortion-optimal parallel MRI with sparse sampling: from adaptive spatio-temporal acquisition to self-calibrating reconstruction
… acquired by optimally exploiting the degrees of freedom in the joint k-t sampling space, thereby enabling high accelerations and quality in the cine reconstruction stage. We propose and verify the efficacy of a geometric multi-channel sampling design algorithm that does not require explicit …