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 1186 for “"Time-varying"”.
-
Survivability of time-varying networks
Time-varying graphs are a useful model for networks with dynamic connectivity such as mmWave networks and vehicular networks, yet, despite their great modeling power, many important features of time-varying graphs are still poorly understood. In this thesis, we study the survivability properties of …
-
Adaptive Control for Nonlinear, Time Varying Systems
… for aerospace systems to exhibit nonlinear, time varying dynamics. This thesis investigates the development of adaptive control laws to stabilize and control a class of nonlinear, time varying systems. Direct adaptive control architectures are implemented in order to compensate for time …
-
Cooperative impedance control with time-varying stiffness
… torque-based manipulators. Through the use of time-varying impedance parameters, this controller limits the interaction forces to ensure harmless manipulation. Successful completion of transport and insertion tasks demonstrated the effectiveness of the controller.
-
Model Reduction for Linear Time-Varying Systems
The thesis treats model reduction for linear time-varying systems. Time-varying models appear in many fields, including power systems, chemical engineering, aeronautics, and computational science. They can also be used for approximation of time-invariant nonlinear models. Model reduction is a topic …
-
Dynamic Programming and Time-Varying Delay Systems
… of stability and performance of systems with time-varying delays. The two papers presented in the first part attacks optimal control problems with finite but rapidly increasing search space. In the first paper we try it reduce the complexity of the optimization by exploiting the structure of a …
-
Feedback Communication Systems for Time-Varying Channels
The growing use of centralized data processing systems has led to a demand for data transmission facilities from remote locations, mobile stations, and even from space. To meet this demand the possibilities of data transmission over radio channels have been widely investigated. A major problem …
-
Time-varying Small Antennas for Wideband Applications
… of an electrically small antenna in a time-varying fashion such that ultra-fast frequency-shift keying modulation can be achieved regardless of the narrow bandwidth of the antenna. A major advantage of the proposed technique is that the high-Q property of a miniaturized antenna is a …
-
Analysis and filtering of time-varying signals
… analysis and filtering of a slowly time-varying (STV) deterministic signal are considered. A STV signal is characterized as a sophisticated signal whose windowed sections are elementary signals. Mixed time-frequency representations (MTFRs) such as the Wigner distribution (WD), the …
-
Time-Varying Coefficient Models for Recurrent Events
I have developed time-varying coefficient models for recurrent event data to evaluate the temporal profiles for recurrence rate and covariate effects. There are three major parts in this dissertation. The first two parts propose a mixed Poisson process model with gamma frailties for single type …
-
Macroeconomic news, time-varying risk factors, and time-varying risk premia : the case of the US stock and bond markets
… of this paper is to investigate the sources of time-varying risk premia for both the U.S. stock and bond markets. In addition, we look at the sources of time-varying conditional variance and conditional covariance of these two markets. Although a large literature has emerged on the return and …
-
Magnetless circulators based on linear time-varying circuits
… demand for higher data rates to enable multimedia‐rich applications and services, an efficient use of the available wireless resources becomes crucial. For this reason, full‐duplex communication, which doubles the transmission rate over a certain bandwidth compared to currently deployed …
-
On the Synthesis of Time-Varying Linear Systems
Made available in DSpace on 2014-12-04T21:03:10Z (GMT). No. of bitstreams: 1 6000163.pdf: 2541550 bytes, checksum: ed482b4a7ba52432e64786dd04dc382e (MD5) Previous issue date: 1959
-
Time-varying networks estimation and Chinese words segmentation
This thesis contains two research areas including time-varying networks estimation and Chinese words segmentation. Chapter 1 introduces the background of the time-varying networks and the structure of Chinese language, followed by the motivations and goals for the research work. In many biomedical …
-
Temporal typography : characterization of time-varying typographic forms
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1995.
-
Time-varying linear predictive coding of speech signals.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
-
Motion estimation and interpolation in time-varying imagery
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
-
Determination of Three Dimensional Time Varying Flow Structures
Time varying flow structures are involved in a large percentage of fluid flows although there is still much unknown regarding their behavior. With the development of high spatiotemporal resolution measurement systems it is becoming more feasible to measure these complex flow structures, which in …
-
Robust communication in a time-varying noisy environment
… the noise is stationary over short periods of time, and the noise autocorrelation sequence is estimated, the SNRI or performance of the MAMF varies and can even become less than unity if either the estimates are poor or the noise characteristics differ from those expected when the signal …
Page 1 of 60