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Creator | Title | Description | Subject | Date |
401 |
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Mathews, V. John | Parameter estimation for a bilinear time series model | ABSTRACT This paper presents a direct approach to the estimation of the parameters associated with a bilinear time series model. The approach depends critically on the expressions for certain higher-order statistics of the signals that satisfy the bilinear model. These expressions are linear in mo... | | 1991 |
402 |
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Tasdizen, Tolga; Whitaker, Ross T. | Particle-based simulation of fluids | Due to our familiarity with how fluids move and interact, as well as their complexity, plausible animation of fluids remains a challenging problem. We present a particle interaction method for simulating fluids. The underlying equations of fluid motion are discretized using moving particles and th... | | 2003 |
403 |
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Mathews, V. John | Perceptually lossless image compression | There are many instances in which human observers are the final judges of the quality of a compressed image. In such situations, it is useful to incorporate a model of the human visual system (HVS) into the image compression system in order to reduce or even eliminate the visual distortions introdu... | | 1997 |
404 |
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Mathews, V. John | Perceptually lossless image compression | This paper presents an algorithm for perceptually lossless image compression. A compressed image is said to be perceptually lossless for a specified viewing distance if the reconstructed image and the original image appear identical to human observers when viewed from the specified distance. Our app... | | 1998-01-01 |
405 |
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Mathews, V. John | Performance analysis of adaptive filters equipped with the dual sign algorithm | Adaptive filters equipped with the sign algorithm are attractive in many applications because of their computational simplicity. Unfortunately, their slow speed of convergence is a major limitation. The dual sign algorithm (DSA) is a means by which the convergence speed can be increased without over... | | 1991 |
406 |
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Mastrangelo, Carlos H.; Young, Darrin J. | Personal navigation via high-resolution gait-corrected inertial measurement units | Abstract-In this paper, a personal micronavigation system that uses high-resolution gait-corrected inertial measurement units is presented. The goal of this paper is to develop a navigation system that uses secondary inertial variables, such as velocity, to enable long-term precise navigation in th... | | 2010 |
407 |
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Mastrangelo, Carlos H. | Personal navigation via shoe mounted inertial measurement units | We are developing a personal micronavigation system that uses high-resolution gait-corrected inertial measurement units. The goal of this project is to develop a navigation system that use secondary inertial variables, such as velocity, to enable long-term precise navigation in the absence of Global... | | 2010 |
408 |
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Stringfellow, Gerald B. | Phase separation in strained epitaxial InGaN islands | Phase separation (PS) produces InN composition gradients in InGaN islands, which may be important for light emitting diodes, solar cells, and lasers. Thus, the control of PS is critical, and the kinetic growth process, which is suggested to be important for controlling PS in Stranski-Krastanov islan... | | 2011 |
409 |
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Harrison, Reid R. | Phonotaxis in crickets and robots | Over the past decade, we have built and tested several robot models to investigate a particular biological behavior, the sound localizing (phonotaxis) ability of the cricket. This work has had several purposes. One is to develop robotic technology, such as novel sensors and control systems, by copyi... | Phonotaxis | 2002 |
410 |
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Stringfellow, Gerald B. | Photoluminescence of Shallow Acceptors in Epitaxial AlGaAs | The low-temperature (2 K) photoluminescence (PL) of AlxGa1-xAs (0<x<0.25 was studied in an effort to characterize shallow acceptors in material grown by organometallic vapor phase epitaxy and liquid phase epitaxy techniques. The dominant shallow acceptor in nominally undoped AlxGa1-xAs specimens gro... | Photoluminescence; Acceptors; Doping | 1980 |
411 |
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Mathews, V. John | Pilot embedding for channel estimation and tracking in OFDM systems | Abstract-We consider the problem of channel estimation and tracking in OFDM systems and explore the idea of adding pilot symbols to the data symbols as a means to conserve bandwidth. The term pilot embedding (PE) is used to refer to this scheme. Compared to the pilot insertion (PI) scheme, i.e., the... | | 2004 |
412 |
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Tasdizen, Tolga | PIMs and invariant parts for shape recognition | We present completely new very powerful solutions t o two fundamental problems central to computer vision. 1. Given data sets representing C objects to be stored in a database, and given a new data set for an object, determine the object in the database that is most like the object measured. We so... | | 1997 |
413 |
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Rieth, Loren W | Plasma-assisted atomic layer deposition of Al2O3 and parylene C bi-layer encapsulation for chronic implantable electronics | Encapsulation of biomedical implants with complex three dimensional geometries is one of the greatest challenges achieving long-term functionality and stability. This report presents an encapsulation scheme that combines Al2O3 by atomic layer deposition with parylene C for implantable electronic sys... | | 2012-01-01 |
414 |
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Blair, Steven | Plasmonic coupling effect in Ag nanocap-nanohole pairs for surface-enhanced Raman scattering | A plasmonic coupling structure composed of Ag nanocap-nanohole pairs was fabricated through a novel and facile method. Both surface-enhanced Raman scattering (SERS) measurements and numerical simulations show that the cap-hole system produces much larger electric field enhancement and SERS signal th... | | 2012-01-01 |
415 |
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Harrison, Reid R. | Polymer based thin film coils as a power module of wireless neural interfaces | For the conventional Utah Electrode Array (UEA) to be able to function without transcutaneous wire connections, a kind of power source is needed in an integrated form with the UEA. To develop such wireless neural interfaces, inductive coupling between two coils was used to deliver power to the integ... | Wireless; Neural interfaces; Thin film coils; Utah Electrode Array | 2006 |
416 |
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Stevens, Kenneth | The post office experience: designing a large asynchronous chip | The Post Office is an asynchronous, 300,000 transistor, full-custom CMOS chip designed as the communication component for the Mayfly scalable parallel processor. Performance requirements led to the development of a design style which permits the design of sequential circuits operating under a rest... | | 1993 |
417 |
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Myers, Chris J. | Poster abstract: methods and tools for verification of cyber-physical systems | As chip technology scales, it is becoming possible to integrate multiple cores on a single chip which communicate using a network-on-chip (NoC) paradigm. One CPS application area that can leverage this is in automotive electronic systems which often require more than 50 electronic control units (ECU... | | 2012-01-01 |
418 |
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Harrison, Reid R. | Power minimization of a 433-MHz LC VCO for an implantable neural recording system | This paper presents a new random-search based integrated inductor optimization algorithm. The algorithm provides the designer with valuable information about design tradeoffs. it is used to design an inductor to minimize power dissopation in an LC VCO. The measured results show that a 53:1 power sav... | | 2006 |
419 |
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Stevens, Kenneth | Power reduction through physical placement of asynchronous routers | Our work reduces power consumption by minimizing wirelength and hop-count of an asynchronous NoC using simulated annealing and force-directed algorithms. Asynchronous NoCs (aNoCs) can provide important benefits over clocked NoCs. However, there is little published research on generating a custom, ... | | 2009 |
420 |
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Harrison, Reid R. | Power, clock, and data recovery in a wireless neural recording device | For many medical applications, neural recording systems should be fully implantable. Transcutaneous wires must be compleley eliminated, and this necessitates the wireless transfer of power, clock and configuration data to the device. We have developed, fabricated, and tested cirucits that recover po... | | 2006 |
421 |
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Stevens, Kenneth | Practical verification and synthesis of low latency asynchronous systems | A new theory and methodology for the practical verification and synthesis of asynchronous systems is developed to aid in the rapid and correct implementation of complex control structures. Specifications are based on a simple process algebra called CCS that is concise and easy to understand and use.... | | 1994 |
422 |
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Mastrangelo, Carlos H. | Precision curved micro hemispherical resonator shells fabricated by poached-egg micro-molding | This paper presents a new technique for the fabrication of high resolution non-planar precision microshells for hemispherical resonating gyros via a poached-egg micromolding (PEM) method. In PEM, precision ball lenses are used as starting molds. Hemispherical shells are formed on the lenses using fi... | | 2012-01-01 |
423 |
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Furse, Cynthia M. | Predicted MIMO performance in intra-vehicle channels | Wireless sensor networks inside vehicles face particularly harsh multipath and shadowing constraints. The closed or semi-closed metallic structure functions much like a reverberation chamber, but with some regions shielded from other regions. Vehicles (particularly aircraft) often have extremely hig... | | 2008-07 |
424 |
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Mathews, V. John; Varner, Michael W.; Clark, Edward B. | Prediction of pregnancy-induced hypertension using coherence analysis | ABSTRACT This paper presents a novel method to predict hypertensive disorders in pregnancy using coherence analysis. Previous studies suggest that there is inadequate secondary trophoblast invasion in hypertensive pregnancies implying that there are differences in the functional relationships betwe... | | 2004 |
425 |
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Mathews, V. John | Predictive vector quantization of images using a constrained two-dimensional autoregressive predictor | A novel approach to image compression using vector quantization of linear (one-step) prediction errors is presented in this paper. In order to minimize the image reconstruction error, we choose the optimum predictor coefficients (in a least-squares sense) that satisfy the additional constraint that ... | | 1987 |