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 20 of 771 for “"Echo"”.
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Pyxidis Echo Lacuna
The intention of the work that supports this thesis is to provide a space for the viewer to suspend the exterior world and move into a space where he or she finds a line of questioning and a cyclic experience that ultimately leads to self-reflection. The microcosm and macrocosm enlarged and …
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Context : Echo Park
Thesis (M.Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1982.
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Pre-echo detection & reduction
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Epistemic Responsibility in Echo Chambers
… our attention. One pressing issue concerns echo chambers, which, while not unique to the online episteme, are proliferated in pervasive ways online. Specifically, echo chambers manipulate trust dynamics in such a way that makes finding people epistemically responsible difficult, as contrary …
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The (Semi-)Classical Vibrational Echo
The ultrafast vibrational echo experiment is one of a modern generation of nonlinear coherent optical spectroscopies probing the nuclear dynamics of condensed phases. The vibrational echo is the vibrational analog of the NMR spin echo and selectively eliminates inhomogeneous broadening from the …
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Radio Echo Studies of Glaciers
… the choice of radio frequency used by the echo sounder. Electronic control and annotation circuits have been developed for use in the echo sounder and its data recording system, to simplify field operation and avoid errors caused by mistakes in manual recording and annotation. The author …
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Echo: reconstructing gameplay sessions for analysis
We created Echo, a tool designed to help bridge the gap between game analytics and video footage analysis. Echo reconstructs gameplay sessions from recorded data and presents them with their original graphics. A comparative evaluation to video footage analysis revealed that users preferred Echo …
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Charge Echo In An Electron Gas
… work, we investigate the charge, or Loschmidt echo of a system of spinless electrons described by a simple tight-binding Hamiltonian. For this system it is possible to construct a unitary operator, T, that reverses the time evolution of the electron degrees of freedom. The electron gas is …
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Stereophonic Acoustic Echo Cancellation: Theory and Implementation
… implementation aspects for stereophonic acoustic echo cancellation. In Paper I a complete implementation of a stereophonic acoustic echo canceler based on the two-channel fast recursive least-squares algorithm is presented. An analysis of the system calculation complexity is also given, in …
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Radio-echo layering in polar ice sheets
… Antarctic and Greenland ice sheets during radio-echo sounding. It describes in detail layering seen with 60 and 300 MHz equipment _in the Antarctic ice sheet during three field seasons betwe~n 1974 and 1979, and discusses the effects of glaciological and equipment factors, particularly radio …
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Radio Echo Sounding Studies of Svalbard Glaciers
… of this study was to investigate the radio echo sounding properties of Svalbard glaciers and to use these data to obtain information about the glaciological environment. Particular emphasis was placed on obtaining an understanding of the dielectric properties of the ice and reflecting …
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3D echo cancellation in a home environment
… various algorithms for the cancellation of echoes in a home environment, where the room impulse response is unknown and variable. The general problem, where the speaker's movements are completely unrestricted, is a very hard one, and research in this area has only begun in the last several …
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Implementation and evaluation of echo cancellation algorithms
Echo in telephones is generally undesirable but inevitable. There are two possible sources of echo in a telephone system. The impedance mismatch in hybrids generates network (electric) echo. The acoustic coupling between loudspeaker and microphone, in hands-free telephones, produces acoustic echo. …
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Measurement of diffusion by the Spin-echo method
… magnetic resonance. It is called the "Spin-echo" method. Experimental apparatus has been built to observe spin-echos in samples of water. The results of these experiments agree with the theory of the method. An extended discussion of experimental details is given in this thesis.
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Political Echo Chambers: The Internet Facilitates Identity Confirmation
… with different worldviews inhabit identity echo chambers with like-minded others and are empowered to clash with those who have different worldviews. The research conducted in this study aimed to determine whether the easy access to confirming information provided by the Internet satisfies …
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MIMO-OFDM Symbol Detection via Echo State Networks
Echo state network (ESN) is a specific neural network structure composed of high dimensional nonlinear dynamics and learned readout weights. This thesis considers applying ESN for symbol detection in multiple-input, multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) systems. A …
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Indoor positioning using modulated echo radio localization instrument (MERLIN)
In a world of advanced technology and its close integration within indoor environments, the ability to navigate people and devices indoors has become increasingly important for numerous applications. Global Positioning System (GPS) has solved the issue of positioning and navigation for outdoor …
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