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1 Kirby, Robert Michael II; Johnson, Christopher R.A new family of variational-form-based regularizers for reconstructing epicardial potentials from body-surface mappingWe propose a new family of regularizers for the inverse ECG problem, using a variational principle that underlies finite element approximation methods. As an alternative to traditional Tikhonov regularizers, the variational formulation has several advantages: 1)it enables a simple construction of ...2010
2 Henderson, Thomas C.A study of Pierce's group generatorPierce describes an approach to map learning with uninterpreted sensors and effectors. As part of that, he describes a sensor grouping generator operator that attempts to arrange similar sensors into groups. Here we review that work and place it in a more strenuous statistical validation framewor...Pierce's group; Map learning; Sensor grouping generator2010
3 Whitty, Kevin J.A system for measuring bubble voidage and frequency around tubes immersed in a fluidized bed of particlesGas-solid fluidized beds are common in chemical processing and energy production industries. These types of reactors frequently have banks of tubes immersed within the bed to provide heating or cooling, and it is important that the fluid dynamics within these bundles is efficient and uniform. This p...2010
4 Sutherland, James Clayton; Kerstein, Alan R.A unified approach to the various formulations of the one-dimensional-turbulence modelThe One-Dimensional Turbulence (ODT) model has been successfully applied as a stand-alone model for predicting turbulence statistics in both nonreacting and reacting flows. There are several formulations of the model in the literature, and most of the variable-density formulations do not clearly dis...2010
5 Sutherland, James Clayton; Kerstein, Alan R.; Chen, Jaqueline H.An evaluation of the one-dimensional turbulence model: comparison with direct numerical simulation of CO/H2 jets with extinction and reignitionAbstract A variant of the One-Dimensional Turbulence (ODT) model formulated in an Eulerian reference frame is applied to a planar nonpre mixed turbulent jet flame and results from the model prediction are compared with DNS data. The model employed herein solves the full set of conservation equation...2010
6 Stevens, KennethBandwidth optimization in asynchronous NoCs by customizing link wire lengthThe bandwidth requirement for each link on a network-on-chip (NoC) may differ based on topology and traffic properties of the IP cores. Available bandwidth on an asynchronous NoC link will also vary depending on the wire length between sender and receiver. We explore the benefit to NoC performance ...2010
7 Mastrangelo, Carlos H.Batch fabrication of flowable colorimetric pressure sensing particles via surface micromachiningThe batch fabrication and test of artificial optical resonator slab-type micro particles (14 μm diameter, 0.7 μm gap) is presented as a means to map absolute pressure within microscopic environments. The pressure-sensing particles consist of a semi-transparent elastic polysilicon shell enclosi...2010
8 Gale, Bruce K.Characterization of a microscale thermal-electrical field-flow fractionation systemA microscale thermal-electrical field-flow fractionation (ThElFFF) channel is reported for the first time and preliminary characterization results show high retention at certain operating conditions including relatively high flow rates when compared to standard microscale electrical or thermal field...2010
9 Balasubramonian, RajeevCHOP: adaptive filter-based DRAM caching for CMP server platformsAs manycore architectures enable a large number of cores on the die, a key challenge that emerges is the availability of memory bandwidth with conventional DRAM solutions. To address this challenge, integration of large DRAM caches that provide as much as 5× higher bandwidth and as low as 1/3rd of...CHOP; DRAM caching; CMP server platforms; Manycore architectures; Hot page; Filter cache; Multi-core processors2010
10 Stevens, KennethComparing energy and latency of asynchronous and synchronous NoCs for embedded SoCsPower consumption of on-chip interconnects is a primary concern for many embedded system-on-chip (SoC) applications. In this paper, we compare energy and performance characteristics of asynchronous (clockless) and synchronous network on-chip implementations, optimized for a number of SoC designs. We...2010
11 Stevens, KennethConcurrency reduction of untimed latch protocols - theory and practiceA systematic investigation into concurrency reduction of untimed asynchronous 4-phase latch controllers is reported. Starting with a state graph that exhibits maximal concurrency, rules are provided for systematically reducing its states and thereby curtailing its behaviors. The rules predict liven...2010
12 Regehr, JohnCorrectness proofs for device drivers in embedded systemsComputer systems do not exist in isolation: they must interact with the world through I/O devices. Our work, which focuses on constrained embedded systems, provides a framework for verifying device driver software at the machine code level. We created an abstract device model that can be plugged...2010
13 Mastrangelo, Carlos H.Detection of biomolecular binding by fourier-transform SPRSurface plasmon resonance (SPR) is a widely used label-free detection technique that has many applications in drug discovery, pharmacokinetics, systems biology and food science. The SPR technique measures the dynamics of a biomolecular interaction at a surface, yielding kinetic association and diss...2010
14 Tasdizen, TolgaDetection of salient image points using principal subspace manifold structureThis paper presents a method to find salient image points in images with regular patterns based on deviations from the overall manifold structure. The two main contributions are that: (i) the features to extract salient point are derived directly and in an unsupervised manner from image neighborhoo...2010
15 Tasdizen, TolgaEdge enhanced spatio-temporal constrained reconstruction of undersampled dynamic contrast enhanced radial MRIThere are many applications in MRI where it is desirable to have high spatial and high temporal resolution. This can be achieved by undersampling of k-space and requires special techniques for reconstruction. Even if undersampling artifacts are removed, sharpness of the edges can be a problem. We pr...2010
16 Stevens, KennethEnergy and performance models for synchronous and asynchronous communicationCommunication costs, which have the potential to throttle design performance as scaling continues, are mathematically modeled and compared for various pipeline methodologies. First-order models are created for common pipeline protocols, including clocked flopped, clocked time-borrowing latch, async...2010
17 Scarpulla, MichaelEnhanced absorption in optically thin solar cells by scattering from embedded dielectric nanoparticlesAbstract: We present a concept for improving the efficiency of thin-film solar cells via scattering from dielectric particles. The particles are embedded directly within the semiconductor absorber material with sizes on the order of one wavelength. Importantly, this geometry is fully compatible wit...2010
18 Tasdizen, TolgaFast semi-supervised image segmentation by novelty selectionThe goal of semi-supervised image segmentation is to obtain the segmentation from a partially labeled image. By utilizing the image manifold structure in labeled and unlabeled pixels, semi-supervised methods propagate the user labeling to the unlabeled data, thus minimizing the need for user labelin...2010
19 Scarpulla, MichaelHeat flow model for pulsed laser melting and rapid solidification of ion implanted GaAsIn order to further understand the pulsed-laser melting (PLM) of Mn and N implanted GaAs, which we have used to synthesize thin films of the ferromagnetic semiconductor Ga1−xMnxAs and the highly mismatched alloy GaNxAs1−x, we have simulated PLM of amorphous (a-) and crystalline (c-) GaAs. We pre...2010
20 Rieth, Loren W; Solzbacher, FlorianHigh speed wafer scale bulge testing for the determination of thin film mechanical propertiesA wafer scale bulge testing system has been constructed to study the mechanical properties of thin films and microstructures. The custom built test stage was coupled with a pressure regulation system and optical profilometer which gives high accuracy three-dimensional topographic images collected on...2010
21 Tasdizen, Tolga; Whitaker, Ross T.Improving undersampled MRI reconstruction using non-local meansObtaining high quality images in MR is desirable not only for accurate visual assessment but also for automatic processing to extract clinically relevant parameters. Filtering-based techniques are extremely useful for reducing artifacts caused due to undersampling of k-space (to reduce scan time...2010
22 Blair, StevenIncreased OLED radiative efficiency using a directive optical antennaWe investigate the improvement in efficiency of organic light emitting diodes/displays (OLEDs) by embedding a typical OLED structure within a metallic patch grating resonator. A patch grating resonator is similar to the more familiar Fabry-Perot resonator, except that one mirror of the resonator is ...2010
23 Freire, JulianaIndexing relations on the webThere has been a substantial increase in the volume of (semi) structured data on the Web. This opens new opportunities for exploring and querying these data that goes beyond the keyword-based queries traditionally used on the Web. But supporting queries over a very large number of apparently disconn...Dataspaces; Web relations; Rewriting2010
24 Scarpulla, MichaelInvestigating sputtered Cu2Si1-xSnxS3 (CSTS) for earth abundant thin film photovoltaicsThis study investigates the synthesis of chalcopyrite Cu2Si1-xSnxS3 (CSTS) thin films for photovoltaic solar cell absorber layers. Preliminary results indicate that layered sputtering of Cu, Sn, and Si followed by annealing in a sulfur atmosphere at 500⁰C does not provide adequate mixing or sulfu...2010
25 Harrison, Reid R.; Rieth, Loren W.; Tathireddy, Prashant; Solzbacher, FlorianLong term in vitro stability of fully integrated wireless neural interfaces based on Utah slant electrode arrayWe herein report in vitro functional stability and recording longevity of a fully integrated wireless neural interface (INI). The INI uses biocompatible Parylene-C as an encapsulation layer, and was immersed in phosphate buffered saline (PBS) for a period of over 150 days. The full functionality ...2010
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