Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 326 |
 |
Armentrout, Peter B. | Thermodynamics and mechanism of protonated cysteine decomposition: a guided ion beam and computational study | A quantitative molecular description of the decomposition of protonated cysteine, H+Cys, is provided by studying the kinetic energy dependence of threshold collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Primary dissociation channels are deamida... | 2014-01-01 | |
| 327 |
 |
Armentrout, Peter B. | Thermodynamics and mechanisms of protonated diglycine decomposition: a guided ion beam study | We present a full molecular description of fragmentation reactions of protonated diglycine (H+GG) by studying their collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Analysis of the kinetic energy-dependent CID cross sections provides the 0 K barr... | 2012-01-01 | |
| 328 |
 |
Zhdanov, Michael | Three-dimensional quasi linear electromagnetic inversion | One of the most challenging problems of electromagnetic (EM) geophysical methods is developing three-dimension(a3l- D) EM inversion techniques. This problem is of utmost importance in practical applications because of the 3-D nature of the geological structures.T he main difficulties in 3-D inversio... | 1996-01-01 | |
| 329 |
 |
Simpson, Jamesina J. | Three-dimensional FDTD modeling of impulsive ELF propagation about the earth-sphere | This paper reports the application of an efficient finite-difference time-domain (FDTD) algorithm to model impulsive extremely low frequency (ELF) propagation within the entire Earth-ionosphere cavity. Periodic boundary conditions are used in conjunction with a three-dimensional latitude-longitude F... | 2004-01-01 | |
| 330 |
 |
Miller, Jan D. | Thiourea-thiocyanate leaching system for gold | The leaching of gold in thiourea-thiocyanate solutions has been studied by the rotating-disk technique using ferric sulfate as oxidant. The effects of initial concentrations of ferric, thiourea (Tu) and thiocyanate as well as temperature and pH values on gold leaching rates were studied. An initial ... | 2010-01-01 | |
| 331 |
 |
Simpson, Jamesina J. | Three-dimensional subwavelength confinement of a photonic nanojet using a plasmonic nano-antenna GAP | Using 3-D finite-difference time-domain (FDTD) modeling, a microsphere-generating nanojet and gold nanoantenna gap are optimized to achieve 3-D nanojet confinement to a subwavelength volume of about 0.009 μm3 (wherein the edges of the volume are defined at 1/e2 of the maximum electric-field intensi... | 2014-01-01 | |
| 332 |
 |
Regehr, John | Thread verification vs. interrupt verification | Interrupts are superficially similar to threads, but there are subtle semantic differences between the two abstractions. This paper compares and contrasts threads and interrupts from the point of view of verifying the absence of race conditions. We identify a small set of extensions that permit thre... | 2006-01-01 | |
| 333 |
 |
Tasdizen, Tolga | Three-dimensional alignment and merging of confocal microscopy stacks | We describe an efficient, robust, automated method for image alignment and merging of translated, rotated and flipped confocal microscopy stacks. The samples are captured in both directions (top and bottom) to increase the SNR of the individual slices. We identify the overlapping region of the two s... | 2013-01-01 | |
| 334 |
 |
Poulter, Charles Dale | Tetartohedral twinning in IDI-2 from Thermus thermophilus: crystallization under anaerobic conditions | Type-2 isopentenyl diphosphate isomerase (IDI-2) is a key flavoprotein involved in the biosynthesis of isoprenoids. Since fully reduced flavin mononucleotide (FMNH2) is needed for activity, it was decided to crystallize the enzyme under anaerobic conditions in order to understand how this reduced co... | 2014-01-01 | |
| 335 |
 |
Solomon, Douglas Kip | Tracer applications of noble gas radionuclides in the geosciences | Noble gas radionuclides, including 81Kr (t1/2 = 229,000 yr), 85Kr (t1/2 = 10.8 yr), and 39Ar (t1/2 = 269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes. Recent advances in Atom Trap Trace Analysis (ATTA), a laser-based atom counting method... | 2014-01-01 | |
| 336 |
 |
Gerig, Guido | Toward a comprehensive framework for the spatiotemporal statistical analysis of longitudinal shape data | This paper proposes an original approach for the statistical analysis of longitudinal shape data. The proposed method allows the characterization of typical growth patterns and subject-specific shape changes in repeated time-series observations of several subjects. This can be seen as the extension ... | 2013-01-01 | |
| 337 |
 |
Pascucci, Valerio | Topology verification for isosurface extraction | The broad goals of verifiable visualization rely on correct algorithmic implementations. We extend a framework for verification of isosurfacing implementations to check topological properties. Specifically, we use stratified Morse theory and digital topology to design algorithms which verify topolog... | 2012-01-01 | |
| 338 |
 |
Pascucci, Valerio | Topological analysis and visualization of cyclical behavior in memory reference traces | We demonstrate the application of topological analysis techniques to the rather unexpected domain of software visualization. We collect a memory reference trace from a running program, recasting the linear flow of trace records as a high-dimensional point cloud in a metric space. We use topological ... | 2012-01-01 | |
| 339 |
 |
Gopalakrishnan, Ganesh | Towards providing low-overhead data race detection for large OpenMP applications | Neither static nor dynamic data race detection methods, by themselves, have proven to be sufficient for large HPC applications, as they often result in high runtime overheads and/or low race-checking accuracy. While combined static and dynamic approaches can fare better, creating such combinations, ... | 2014-01-01 | |
| 340 |
 |
Rieth, Loren W | TiO2-WO3 composite nanotubes from co-sputtered thin films on si substrate for enhanced photoelectrochemical water splitting | Electrochemical anodization of a Ti-W nano-composite thin films deposited on a Si substrate by simultaneous magnetron sputtering of Ti and W resulted in the formation of TiO2-WO3 nanotubular arrays. A change in the morphology of TiO2-WO3 composite nanotubes with varying percentage of W in Ti-W compo... | 2014-01-01 | |
| 341 |
 |
Gerig, Guido | Towards analysis of growth trajectory through multi-modal longitudinal MR imaging | The human brain undergoes significant changes in the first few years after birth, but knowledge about this critical period of development is quite limited. Previous neuroimaging studies have been mostly focused on morphometric measures such as volume and shape, although tissue property measures rela... | 2010-01-01 | |
| 342 |
 |
Gerig, Guido | Topology preserving atlas construction from shape data without correspondence using sparse parameters | Statistical analysis of shapes, performed by constructing an atlas composed of an average model of shapes within a population and associated deformation maps, is a fundamental aspect of medical imaging studies. Usual methods for constructing a shape atlas require point correspondences across subject... | 2012-01-01 | |
| 343 |
 |
Liu, Feng | Topological and electronic transitions in a Sb(111) nanofilm: the interplay between quantum confinement and surface effect | When the dimension of a solid structure is reduced, there will be two emerging effects, quantum confinement and surface effect, which dominate at nanoscale. Based on first-principles calculations, we demonstrate that due to an intriguing interplay between these two dominating effects, the topologica... | 2012-01-01 | |
| 344 |
 |
Wen, Ming | Trans-local ties, local ties and psychological well-being among rural-to-urban migrants in Shanghai | During the past three decades, an estimated 200 million rural residents have moved to urban centers in China. They are "sojourners" in the cities and maintain close ties with their home communities, which we term trans-local ties. This paper examines the relationship between migrants' social ties an... | 2012-01-01 | |
| 345 |
 |
Hansen, Charles D. | Transfer function design based on user selected samples for intuitive multivariate volume exploration | Multivariate volumetric datasets are important to both science and medicine. We propose a transfer function (TF) design approach based on user selected samples in the spatial domain to make multivariate volumetric data visualization more accessible for domain users. Specifically, the user starts the... | 2013-01-01 | |
| 346 |
 |
Zick, Cathleen D. | Trends in Americans food-related time use: 1975-2006 | Objective: To describe how the time spent in food-related activities by Americans has changed over the past 30 years. Design: Data from four national time diary surveys, spanning 1975-2006, are used to construct estimates of trends in American adults' time spent in food-related activities. Multivari... | 2010-01-01 | |
| 347 |
 |
Jensen, Randy Lynn | Treatment-related brain tumor imaging changes: so-called "pseudoprogression" vs. tumor progression: Review and future research opportunities | Background: Glioblastoma multiforme (GBM) has a dismal prognosis despite aggressive therapy. Initial diagnosis and measurement of response to treatment is usually determined by measurement of gadolinium-enhanced tumor volume with magnetic resonance imaging (MRI). Unfortunately, many GBM treatment mo... | 2013-01-01 | |
| 348 |
 |
Couldwell, William T. | Transnasal excerebration surgery in ancient Egypt: Historical vignette | Ancient Egyptians were pioneers in many fields, including medicine and surgery. Our modern knowledge of anatomy, pathology, and surgical techniques stems from discoveries and observations made by Egyptian physicians and embalmers. In the realm of neurosurgery, ancient Egyptians were the first to elu... | 2012-01-01 | |
| 349 |
 |
Golden, Kenneth M. | Transition in the fractal geometry of Arctic melt ponds | During the Arctic melt season, the sea ice surface undergoes a remarkable transformation from vast expanses of snow covered ice to complex mosaics of ice and melt ponds. Sea ice albedo, a key parameter in climate modeling, is determined by the complex evolution of melt pond configurations. In fact, ... | 2012-01-01 | |
| 350 |
 |
Venkatasubramanian, Suresh | Track estimation using link line crossing information in wireless networks | Device-free or non-cooperative localization uses the changes in signal strength measured on links in a wireless network to estimate a person's position in the network area. Existing methods provide an instantaneous coordinate estimate via radio tomographic imaging or location fingerprinting. In this... | 2013-01-01 |