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Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 351 |
 | Tasdizen, Tolga | Segmentation of haematopoeitic cells in bone marrow using circle detection and splitting techniques | Bone marrow evaluation is indicated when peripheral blood abnormalities are not explained by clinical, physical, or laboratory findings. In this paper, we propose a novel method for segmentation of haematopoietic cells in the bone marrow from scanned slide images. Segmentation of clumped cells is a ... | 2012-01-01 | |
| 352 |
 | Gerig, Guido | Segmentation of serial MRI of TBI patients using personalized atlas construction and topological change estimation | Traumatic brain injury (TBI) due to falls, car accidents, and warfare affects millions of people annually. Determining personalized therapy and assessment of treatment efficacy can substantially benefit from longitudinal (4D) magnetic resonance imaging (MRI). In this paper, we propose a method for s... | 2012-01-01 | |
| 353 |
 | Couldwell, William T. | Sellar and parasellar metastatic tumors | The sellar and parasellar (SPS) region is a complex area rich in vital neurovascular structures a first manifestation of a systemic malignancy. Metastases to this region are rare; breast cancer is the most common source among those that metastasize to the SPS region. Ophthalmoplegia, headache, retro... | 2012-01-01 | |
| 354 |
 | Bernstein, Paul S. | Senior-Løken syndrome: a syndromic form of retinal dystrophy associated with nephronophthisis | Senior-Løken syndrome (SLS) is an autosomal recessive disease characterized by development of a retinitis (RP)- or Leber congenital amaurosis (LCA)-like retinal dystrophy and a medullary cystic kidney disease, nephronophthisis. Mutations in several genes (called nephrocystins) have been shown to ca... | 2012-01-01 | |
| 355 |
 | Venkatasubramanian, Suresh | Sensor network localization for moving sensors | Sensor network localization (SNL) is the problem of determining the locations of the sensors given sparse and usually noisy inter-communication distances among them. In this work we propose an iterative algorithm named PLACEMENT to solve the SNL problem. This iterative algorithm requires an initial ... | 2012-01-01 | |
| 356 |
 | Tasdizen, Tolga | Serial section registration of axonal confocal microscopy datasets for long-range neural circuit reconstruction | In the context of long-range digital neural circuit reconstruction, this paper investigates an approach for registering axons across histological serial sections. Tracing distinctly labeled axons over large distances allows neuroscientists to study very explicit relationships between the brain's com... | 2012-01-01 | |
| 357 |
 | Wen, Ming | Sex and ethnic differences in validity of self-reported adult height, weight and body mass index | Objectives: Describe self-reported and mea-sured height, weight, and body mass index (BMI) stratified by sex and ethnicity in the United States, explore ethnic variations in the likelihood of under-reporting BMI, and investigate pathways linking race/ethnicity to the underassessment of BMI. | 2012-01-01 | |
| 358 |
 | Gondolo, Paolo | Simple renormalizable flavor symmetry for neutrino oscillations | The recent measurement of a nonzero neutrino mixing angle θ13 requires a modification of the tri-bimaximal mixing pattern that predicts a zero value for it. We propose a new neutrino mixing pattern based on a spontaneously broken A4 flavor symmetry and a type-I seesaw mechanism. Our model allows fo... | 2012-01-01 | |
| 359 |
 | Armentrout, Peter B. | The simplest b2+ ion: determining its structure from its energetics by a direct comparison of the threshold collision-induced dissociation of protonated oxazolone and diketopiperazine | Energy-resolved collision-induced dissociation of b2 + ions derived from protonated GGG and GAG are compared with that of protonated diketopiperazine (H+DKP). Absolute dissociation cross sections are obtained using a guided ion beam tandem mass spectrometer and analyzed using statistical methods. Th... | 2012-01-01 | |
| 360 |
 | Stringfellow, Gerald B. | Simulation of self-assembled compositional core-shell structures in In xGa 1-xN nanowires | We report the simulation of compositional core-shell structure formation in epitaxial InGaN nanowires (NWs) and its dependence on kinetic growth mode and epitaxial relation to substrate, based on atomistic-strain-model Monte Carlo simulations. On a lattice mismatched substrate, the layer-by-layer gr... | 2012-01-01 | |
| 361 |
 | Bernstein, Paul S. | Skin carotenoid status measured by resonance Raman spectroscopy as a biomarker of fruit and vegetable intake in preschool children | Background/Objective: Dietary assessment in children is difficult, suggesting a need to develop more objective biomarkers of intake. Resonance Raman spectroscopy (RRS) is a noninvasive, validated method of measuring carotenoid status in skin as a biomarker of fruit/vegetable intake. The purpose of t... | 2012-01-01 | |
| 362 |
 | Lupton, John Mark | Slow hopping and spin dephasing of coulombically bound polaron pairs in an organic semiconductor at room temperature | Polaron pairs are intermediate electronic states that are integral to the optoelectronic conversion process in organic semiconductors. Here, we report on electrically detected spin echoes arising from direct quantum control of polaron pair spins in an organic light-emitting diode at room temperature... | 2012-01-01 | |
| 363 |
 | Liu, Feng | Spatial and energy distribution of topological edge states in single Bi(111) bilayer | By combining scanning tunneling microscopy and spectroscopy, angle-resolved photoemission spectroscopy, and density functional theory band calculations, we directly observe and resolve the one-dimensional edge states of single bilayer (BL) Bi(111) islands on clean Bi2Te3 and Bi(111)-covered Bi2Te3 s... | 2012-01-01 | |
| 364 |
 | Mishchenko, Eugene | Spin and charge structure of the surface states in topological insulators | We investigate the spin and charge densities of surface states of the three-dimensional topological insulator Bi2Se3, starting from the continuum description of the material [Zhang et al., Nat. Phys. 5, 438 (2009)]. The spin structure on surfaces other than the (111) surface has additional complexit... | 2012-01-01 | |
| 365 |
 | Garber, Sarah | Spinal arteriovenous fistulas in children with hereditary hemorrhagic telangiectasia: report of 2 cases | Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant angiodysplasia with high penetrance and variable expression. The manifestations of HHT are often age related, and spinal arteriovenous fistula (AVF) may be the initial presentation of HHT in young children. Because spinal AVFs are... | 2012-01-01 | |
| 366 |
 | Adler, Frederick R. | Sputum biomarkers and the prediction of clinical outcomes in patients with cystic fibrosis | Lung function, acute pulmonary exacerbations (APE), and weight are the best clinical predictors of survival in cystic fibrosis (CF); however, underlying mechanisms are incompletely understood. Biomarkers of current disease state predictive of future outcomes might identify mechanisms and provide tre... | 2012-01-01 | |
| 367 |
 | Hawkes, Kristen | Stag hunts or rearing environments? | Tomasello et al. have made the case that shared intentionality distinguishes humans from our nearest living relatives. What accounts for the difference? The answer they offer is Stag Hunt choices faced by ancestral foragers. Noting problems with that answer, I urge attention to a promising alternati... | 2012-01-01 | |
| 368 |
 | Balasubramonian, Rajeev | Staged reads: mitigating the impact of DRAM writes on DRAM reads | Main memory latencies have always been a concern for system performance. Given that reads are on the criti- cal path for CPU progress, reads must be prioritized over writes. However, writes must be eventually processed and they often delay pending reads. In fact, a single channel in the main memory ... | 2012-01-01 | |
| 369 |
 | Olivera, Baldomero M. | Stapling mimics noncovalent interactions of γ-carboxyglutamates in conantokins, peptidic antagonists of N-methyl-D-aspartic acid receptors | Background: Can dicarba bridges (stapling) replace noncovalent interactions that stabilize helical conformation of neuroactivepeptides? Results: A rational design, synthesis, structural, and functional characterization of stapled conG analogs that target NMDAreceptors is reported. Conclusion: Staple... | 2012-01-01 | |
| 370 |
 | Gerig, Guido | Statistical growth modeling of longitudinal DT-MRI for regional characterization of early brain development | A population growth model that represents the growth trajectories of individual subjects is critical to study and understand neurodevelopment. This paper presents a framework for jointly estimating and modeling individual and population growth trajectories, and determining significant regional diffe... | 2012-01-01 | |
| 371 |
 | Kirby, Robert Michael | Stochastic collocation for optimal control problems with stochastic pde constraints | We discuss the use of stochastic collocation for the solution of optimal control problems which are constrained by stochastic partial differential equations (SPDE). Thereby the constraining SPDE depends on data which is not deterministic but random. Assuming a deterministic control, randomness withi... | 2012-01-01 | |
| 372 |
 | Furse, Cynthia M. | Stochastic FDTD for analysis of statistical variation in electromagnetic fields | This paper describes a new stochastic finite difference time domain (S-FDTD) method for calculating the variance in the electromagnetic fields caused by variability or uncertainty in the electrical properties of the materials in the model. Details of the 1D derivation using truncated Taylor series a... | 2012-01-01 | |
| 373 |
 | Von Arnim, Rudiger Lennart | Structural transformation in China and India: the role of macroeconomic policies | This paper explores macroeconomic policies that can sustain structural change in China and India. A two-sector open-economy model with endogenous productivity growth, demand driven output and income distribution as an important determinant of economic activity is calibrated to a 2000 SAM for China a... | 2012-01-01 | |
| 374 |
 | Couldwell, William T. | Submandibular high-flow bypass in the treatment of skull base lesions: an analysis of long-term outcome | Background: Cerebral bypass surgery remains an integral part of the treatment of complex skull base tumors and unclippable aneurysms. Objective: The authors retrospectively analyzed a single-surgeon experience using a high-flow submandibular-infratemporal saphenous vein graft bypass technique after ... | 2012-01-01 | |
| 375 |
 | Rogachev, Andrey | Superconductor-insulator transition in long MoGe nanowires | 2012-01-01 |