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 157 for “"Time-delays"”.
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Consensus in multi-agent systems with time-delays
… and stability analysis of consensus problems, time-delay systems, and sampled-data systems have been presented. Novel contributions have been illustrated in Chapters 5-8. Particularly, in Chapter 5 we reported the results of Zareh et al. (2013b), where we investigated the consensus problem for …
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Estimating time delays between irregularly sampled time series
The time delay estimation between time series is a real-world problem in gravitational lensing, an area of astrophysics. Lensing is the most direct method of measuring the distribution of matter, which is often dark, and the accurate measurement of time delays set the scale to measure distances …
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The measurement of time delays in gravitational lenses
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Cooperative control of multi-agent systems with time-delays
… control algorithms for multi-agent systems with time-delays. The first one is Robust Sliding-Mode Cooperative Control for Multiple Time-Delay Systems with Model Uncertainties and Disturbance, in which, it designed a sliding mode cooperative control law for a general time-delay system with model …
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Line-of-sight effects on strong lensing time delays
… these effects on measurements of strong lensing time delays. We implement this formalism in the tidal regime as a new sub-package in the open-source lens modelling software package lenstronomy. Using this implementation, we generate mock lens images and measured time delay data, and investigate …
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Design of Optimal Systems With Low Sensitivity to Small Time Delays
Made available in DSpace on 2014-12-12T20:55:10Z (GMT). No. of bitstreams: 1 8009161.pdf: 2371998 bytes, checksum: c1f7f8f569f055e9ab1c0fb6565b6ef5 (MD5) Previous issue date: 1979
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An attempt to measure the time delays of three gravitational lenses
… this work was to measure the gravitational lens time delays. The ultimate goal was to estimate H₀ in a one-step calculation as proposed by Refsdal in 1964 [30]. I reduced the data using AIPS and DIFMAP astronomical data processing software. I analyzed the final light curves in MATLAB using Pelt's …
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DEFINING AND EVALUATING AGILE CONSTRUCTION MANAGEMENT FOR REDUCING TIME DELAYS IN CONSTRUCTION
… completed on schedule. However, schedule delays are common and recurring in construction, inevitably resulting in rework, cost overruns and legal claims. As projects become increasingly complicated, delays arise in a more unpredictable manner. The initial motivation for this research is to …
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Robustness Bounds For Uncertain Sampled Data Systems With Presence of Time Delays
… Today, in majority of applications, real-time networks like CAN (Controller-Area Network), Ethernet, FlexRay, ARINC, etc are used to close the control loop. However, the use of networks leads to communication constraints like transmission delays and packet dropouts. In the thesis, we …
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Consensus-based Control of Multi-Agent Systems: Distributed Target Tracking and Analysis of Time Delays
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Social Security Disability Insurance and vocational rehabilitation programs : a study of the time delays
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1986.
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Experimental Validation of a New Distributed Cooperative Control Algorithm for Multi-agent Systems with Switching Communication Topologies and Time-Delays
… multiagent systems with switching topologies and time delays. The nonlinear control law utilizes discontinuous cooperative control gains and uses contraction mapping to achieve consensus of multiagent systems. The testing platform we used consists of a number of mobile robots and software …
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Robust adaptive control of uncertain nonlinear systems
… functions, unknown disturbances, and unknown time delays. Systematic controller designs are presented using backstepping methodology, neural network parametrization and robust adaptive control. The results are derived based on rigorous Lyapunov stability analysis. The control performance of …
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Time Delay Estimate Based Direction of Arrival Estimation for Speech in Reverberant Environments
Time delay estimation (TDE)-based algorithms for estimation of direction of arrival (DOA) have been most popular for use with speech signals. This is due to their simplicity and low computational requirements. Though other algorithms, like the steered response power with phase transform (SRP-PHAT), …
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Developing effective management flight simulators
… students and others learn about the impact of time delays in complex systems. Users attempt to follow a target on a computer screen, with different patterns for the target and different time delays between control actions and their impact on the screen position. The delay simulator is an …
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TablaNet : a real-time online musical collaboration system for Indian percussion
… as if they were in the same room. However, the time delays due to the inherent latency in computer networks (up to several hundreds of milliseconds over long distances) are unsuitable for musical applications. Some musical collaboration systems address this issue by transmitting compressed audio …
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Characterizing the perceptual diffusion of auditory lateralization images
… noise sources with different interaural time delays are presented simultaneously over headphones, the separated source images seem to become diffuse and merge over time. Experiments were designed to test the hypothesis that the measure of diffusion perceived would increase over time. …
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Three essays on modeling dynamic organizational processes
… performance. This essay investigates the role of time delays between taking an action and observing the results in impeding learning. These delays ubiquitous in real world settings can introduce important tradeoffs between the long-term and the short-term performance. In this essay, four learning …
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