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Creator | Title | Description | Subject | Date |
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Gerig, Guido | Probabilistic white matter fiber tracking using, particle filtering and von mises-fisher sampling | Standard particle filtering technique have previously been applied to the problem of fiber tracking by Brun et al. (2002) and Bjornemo et al. (2002). However, these previous attempts have not utilised the full power of the technique, and as a result the fiber paths were tracked in a goal directed wa... | Diffusion tensor MRI; Tractography; Probabilistic fiber tracking; Particle filtering; von Mises-Fisher sampling | 2009-01-01 |
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Kestle, John R. W.; MacDonald, Joel D.; Schmidt, Richard H. | Marked reduction of cerebral vasospasm with lumbar drainage of cerebrospinal fluid after subarachnoid hemorrhage | Object. Cerebral vasospasm after subarachnoid hemorrhage (SAH) continues to be a major source of morbidity in patients despite significant clinical and basic science research. Efforts to prevent vasospasm by removing spasmogens from the subarachnoid space have produced mixed results. The authors hyp... | Cerebral vasospasm; Lumbar drainage | 2004 |
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Plutynski, Anya | Explanation in classical population genetics | The recent literature in Philosophy; of biology has drawn attention to the different sorts of explanations proffered in the biological sciences--we have molecular, biomedical, and evolutionary explanations. Do these explanations all have a common structure or relation that they seek to capture? This... | Biology, Philosophy;; Explanation; Genetics; Life sciences; Population genetics; Science | 2005-12 |
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Gerig, Guido | Probabilistic fiber tracking using particle filtering | This paper presents a novel and fast probabilistic method for white matter fiber tracking from diffusion weighted MRI (DWI). We formulate fiber tracking on a nonlinear state space model which is able to capture both smoothness regularity of fibers and uncertainties of the local fiber orientations du... | | 2007-01-01 |
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Davidson, Diane W. | Cecropia and its biotic defenses | In all the world, the genus Cecropia is unrivaled for the number of myrmecophytes, or true "antplants" counted among its species (McKey & Davidson, 1993). Based on the proportion of Cecropia species producing Mullerian bodies in at least some parts of their distribution, myrmecophytes comprise the ... | Myrmecophytes; Mullerian bodies; Pearl bodies | 2005 |
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Marchant, Barrie K.; Reimherr, Frederick W. | Assessment of personality disorder in adult ADHD using data from a clinical trial of OROS Methylphenidate (OROS MPH) | Background: Studies have reported high comorbidity of personality disorder and adult ADHD. However, assessment of personality disorder is problematic and none have rigorously confirmed this observation with measures of concurrent validity. Methods: 47 patients entered a double-blind trial of ORO... | Trapeze Interactive Poster | |
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Caserta, Michael | Challenges, transitions, and healthy aging: Introduction to the special issue | Rowe and Kahn's (1987) seminal piece in the Journal, Science, and the work driven by the MacArthur Foundation that followed (Rowe & Kahn, 1997, 1998) arguably signaled a paradigm shift in how we think about aging and health. Rather than a purely biomedical view of aging and health, Rowe and Kahn pos... | | 2012-01-01 |
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Armentrout, Peter B. | Kinetic energy dependence of dissociative charge-transfer reactions of He+, Ne+, Ar+, Kr+, and Xe+ with silane | Guided ion-beam techniques are used to measure the cross sections as a function of kinetic energy for reaction of SiH4 with He +, Ne +, Ar +, Kr +, and Xe +. State-specific data for the 2P3/2 ground spin-orbit states of Kr+ and Xe+ are also obtained. | Silane; Charge-transfer reactions; Ion-molecule reactions; Ion energy; Rare gas ions; Plasma systems | 1990 |
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Seger, Jon | Models of sex ratio evolution | Our understanding of sex ratio evolution depends strongly on models that identify: (1) constraints on the production of male and female offspring, and (2) fitness consequences entailed by the production of different attainable brood sex ratios. Verbal and mathematical arguments by, among others, D... | Fitness; Species; Sex-allocation | 2002 |
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Wu, Yong-Shi | Mott transition in an anyon gas | We introduce and analyze a lattice model of anyons in a periodic potential and an external magnetic field, which exhibits a transition from a Mott insulator to a quantum Hall fluid. The transition is characterized by the anyon statistics a, which can vary between fermions, a = 0, and bosons, ct - 1... | Anyon gas; Periodic potentials; Mott transition | 1993-11 |
11 |
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Myers, Chris J. | LEMA: A tool for the formal verification of digitally-intensive analog/mixed-signal circuits | The increasing integration of analog/mixed-signal (AMS) circuits into system designs has further complicated an already difficult verification problem. Recently, formal verification, which has been successful in the purely digital domain, has made some in-roads in the AMS domain. This paper describe... | | 2014-01-01 |
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Sperry, John S. | Observations of reaction fibers in leaves of dicotyledons | HALLE, OLDEMAN, AND TOMLINSON (1978) have discussed the transference of function between compound leaves and plagiotropic branches in the context of tree architecture. In trees conforming to Cook's model (see Halle, Oldeman, & Tomlinson, 1978), plagiotropic branches resemble compound leaves in their... | Reaction fibers; Compound leaves | 1982 |
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Mattis, Daniel C. | Soluble extension of the Ising model | In this note we wish to relate a somewhat trivial, but surprising, soluble extension of the multidimensional Ising model. Our extension was motivated by recent experiments on a real material, dysprosium aluminum garnet (DyAlG), which closely resembles an ideal three-dimensional Ising model,1 except ... | Dysprosium aluminum garnet; Ising spin | 1966-05 |
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Armentrout, Peter B. | Dissociative charge transfer reactions of Ar+, Ne+, and He+ with CF4 from thermal to 50 eV | Guided ion-beam techniques are used to measure the cross sections for reaction of CF4 with Ar+, Ne+, and H e + from thermal to 50 eV. Dissociative charge transfer followed by successive loss of F atoms are the major processes observed. Only CFx+ (x = 1,2,3) products are observed in the reactions of ... | Ion-molecule reactions; Transfer reactions; Carbon tetrafluoride; Rare gas ions; Exothermic reactions; Endothermic reactions; Plasma systems | 1990 |
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Dong, Jiawei | Consolidation and permeability of flocculated kaolinite sediment | Vast oil sand resources are located in the province of Alberta, Canada, where water-based oil sands extraction operations are found including extraction and separation of the bitumen from the clay, sand, and water. The production of each barrel of synthetic crude oil (SCO) requires 2 m3 of processe... | Consolidation; Flocculation; Kaolinite; Permeability | 2017 |
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Johnson, Bob L. | Extending the study of learning environments: Connecting the field to other literatures | The study of learning environments in educational organisations has a short but impressive history. A review of this literature reveals that considerable progress has been made in the investigation of this phenomenon. Yet in spite of these advances, momentum in the field has diminished in recent yea... | Organizational theory; Learning environments | 2002 |
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Davidson, Diane W. | Experimental studies of species-specificity in cecropia-ant relationships | Strict coevolution requires that interactions among organisms be speciesspecific. We assessed the relative roles of host- and habitat-specificity in determining the match between a genus of myrmecophytic trees and a guild of obligate plant-ants in the moist tropical forests of Madre de Dios, Peru. F... | Ant-plant; Ants; Cecropia; Coevolution; Colonization; Coordinated dispersal; Ecological fitting; Habitat-specificity; Host-specificity; Mutualism; Parasitoid wasps; Preadaptation | 1997 |
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Chapman, David S. | Regional heat-flow variations across the sedimented Juan de Fuca Ridge eastern flank: constraints on lithospheric cooling and lateral hydrothermal heat transport | Seafloor heat flow has been estimated continuously along a transect on the sedimented eastern flank of the Juan de Fuca Ridge to provide constraints on the scale and rate of lateral heat and fluid transport in the upper igneous crust, and on the total flux from the young lithosphere beneath. The ... | Juan de Fuca Ridge; Seafloor; Lithospheric cooling; Hydrothermal heat transport | 1999 |
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Schmidt, Meic H. | Assessment of the reliability of the Enneking and Weinstein-Boriani-Biagini classifications for staging of primary spinal tumors by the spine oncology study group | Despite advances in the treatment of primary spinal tumors in recent years, the with respect to the feasibility of oncologically appropriate surgical treatment and the selection of the optimal surgical approach. These tumors are relatively rare, comprising 11% of all primary musculoskeletal tumors a... | | 2009-01-01 |
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Teerlink, Craig Carl | Heritability of facial appearance | | | 2012 |
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Wu, Yong-Shi | Transitions between the quantum Hall states and insulators induced by periodic potentials | Transitions between two quantum Hall states or between a quantum Hall state and a Mott insulator induced by periodic potentials are studied in the 1 /TV expansion. The transitions are found to be continuous in the large-TV limit and are described by a critical point that depends on a real parameter ... | Periodic potentials; Insulators | 1993-03 |
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Harpending, Henry C.; Rogers, Alan R. | Detecting positive selection from genome scans of linkage disequilibrium | Though a variety of linkage disequilibrium tests have recently been introduced to measure the signal of recent positive selection, the statistical properties of the various methods have not been directly compared. While most applications of these tests have suggested that positive selection has pl... | Genome scans; Linkage disequilibrium; Gene trees | 2010 |
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Miller, Joel Steven | MnII(N3)2(pyrazine).A 2-D layered structure consisting of ferromagnetically coupled 1-D {Mn(U-1,1-N3)2}n chains | Mn(N3)2(pyz) (pyz = pyrazine) consists of ferromagnetically coupled linear chains of {Mn(N3)2}n comprised of u-1,1-azido bridges together with u-pyz ligands to afford 2-D planar layers. | Ferromagnetic; Coupling; Magnetic | 1999 |
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Davidson, Diane W. | Evolutionary ecology of symbiotic ant-plant relationships | Abstract.--A tabular survey of ant-plant symbioses worldwide summarizes aspects of the evolutionary ecology of these associations. Remarkable similarities between ant-plant symbioses in disjunct tropical regions result from convergent and parallel evolution of similarly preadapted ants and plants. ... | Symbioses; Evolution; Taxonomic | 1993 |
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Riloff, Ellen M. | Automatically constructing a dictionary for information extraction tasks | Knowledge-based natural language processing systems have achieved good success with certain tasks but they are often criticized because they depend on a domain-specific dictionary that requires a great deal of manual knowledge engineering. This knowledge engineering bottleneck makes knowledge-based ... | Information extraction; Dictionary construction; Knowledge-based systems; AutoSlog; Domain-specific dictionary | 1993 |