Tectonoestratigraphic and Thermal Models of the Tiburon and Wagner Basins, northern Gulf of California Rift System

NASA Astrophysics Data System (ADS)

Contreras, J.; Ramirez Zerpa, N. A.; Negrete-Aranda, R.

2014-12-01

The northern Gulf of California Rift System consist sofa series faults that accommodate both normal and strike-slip motion. The faults formed a series of half-greens filled with more than 7 km of siliciclastic suc­cessions. Here, we present tectonostratigraphic and heat flow models for the Tiburón basin, in the southern part of the system, and the Wag­ner basin in the north. The models are constrained by two-dimensional seis­mic lines and by two deep boreholes drilled by PEMEX­-PEP. Analysis of the seismic lines and models' results show that: (i) subsidence of the basins is controlled by high-angle normal faults and by flow of the lower crust, (ii) basins share a common history, and (iii) there are significant differences in the way brittle strain was partitioned in the basins, a feature frequently observed in rift basins. On one hand, the bounding faults of the Tiburón basin have a nested geometry and became active following a west-to-east sequence of activation. The Tiburon half-graben was formed by two pulses of fault activity. One took place during the protogulf extensional phase in the Miocene and the other during the opening of Gulf of California in the Pleistocene. On the other hand, the Wagner basin is the result of two fault generations. During the late-to middle Miocene, the west-dipping Cerro Prieto and San Felipe faults formed a domino array. Then, during the Pleistocene the Consag and Wagner faults dissected the hanging-wall of the Cerro Prieto fault forming the modern Wagner basin. Thermal modeling of the deep borehole temperatures suggests that the heat flow in these basins in the order of 110 mW/m2 which is in agreement with superficial heat flow measurements in the northern Gulf of California Rift System.

Summation and subtraction using a modified autoshaping procedure in pigeons.

PubMed

Ploog, Bertram O

2008-06-01

A modified autoshaping paradigm (significantly different from those previously reported in the summation literature) was employed to allow for the simultaneous assessment of stimulus summation and subtraction in pigeons. The response requirements and the probability of food delivery were adjusted such that towards the end of training 12 of 48 trials ended in food delivery, the same proportion as under testing. Stimuli (outlines of squares of three sizes and colors: A, B, and C) were used that could be presented separately or in any combination of two or three stimuli. Twelve of the pigeons (summation groups) were trained with either A, B, and C or with AB, BC, and CA, and tested with ABC. The remaining 12 pigeons (subtraction groups) received training with ABC but were tested with A, B, and C or with AB, BC, and CA. These groups were further subdivided according to whether stimulus elements were presented either in a concentric or dispersed manner. Summation did not occur; subtraction occurred in the two concentric groups. For interpretation of the results, configural theory, the Rescorla-Wagner model, and the composite-stimulus control model were considered. The results suggest different mechanisms responsible for summation and subtraction.

Structure of the Wagner Basin in the Northern Gulf of California From Interpretation of Seismic Reflexion Data

NASA Astrophysics Data System (ADS)

Gonzalez, M.; Aguilar, C.; Martin, A.

2007-05-01

The northern Gulf of California straddles the transition in the style of deformation along the Pacific-North America plate boundary, from distributed deformation in the Upper Delfin and Wagner basins to localized dextral shear along the Cerro Prieto transform fault. Processing and interpretation of industry seismic data adquired by Petroleos Mexicanos (PEMEX) allow us to map the main fault structures and depocenters in the Wagner basin and to unravel the way strain is transferred northward into the Cerro Prieto fault system. Seismic data records from 0.5 to 5 TWTT. Data stacking and time-migration were performed using semblance coefficient method. Subsidence in the Wagner basin is controlled by two large N-S trending sub-parallel faults that intersect the NNW-trending Cerro Prieto transform fault. The Wagner fault bounds the eastern margin of the basin for more than 75 km. This fault dips ~50° to the west (up to 2 seconds) with distinctive reflectors displaced more than 1 km across the fault zone. The strata define a fanning pattern towards the Wagner fault. Northward the Wagner fault intersects the Cerro Prieto fault at 130° on map view and one depocenter of the Wagner basin bends to the NW adjacent to the Cerro Prieto fault zone. The eastern boundary of the modern depocenter is the Consag fault, which extends over 100 km in a N-S direction with an average dip of ~50° (up to 2s) to the east. The northern segment of the Consag fault bends 25° and intersects the Cerro Prieto fault zone at an angle of 110° on map view. The acoustic basement was not imaged in the northwest, but the stratigraphic succession increases its thickness towards the depocenter of the Wagner basin. Another important structure is El Chinero fault, which runs parallel to the Consag fault along 60 km and possibly intersects the Cerro Prieto fault to the north beneath the delta of the Colorado River. El Chinero fault dips at low-angle (~30°) to the east and has a vertical offset of about 0.5 seconds (TWTT). Seismic imaging indicates that the Wagner and Consag faults transfer most of their slip to the Cerro Prieto fault. Moreover, the 130° intersection between the Wagner and Cerro Prieto faults suggests that the Wagner fault has a significant strike-slip component. Our results indicate that most of the strain in this plate boundary is transferred along two main sub-parallel oblique faults in a narrow zone 35 km-wide.

Dollar Summary of Prime Contract Awards with Principal Place of Performance Outside the U.S. by Country and Contractor, FY83.

DTIC Science & Technology

1983-01-01

GERMANY 55 55 KOHLEN GRUB GERMANY 9,706 9,706 KOLLER WOLFGANG GERMANY 28 28 KOLLSMANN 0MBN SYSTEM TECHN IK GERMANY 37 37 KONTRO#4 ELEKTRONI C GMBH... KRAUSE GERMANY 56 56 WAGNER GLAS UND GEBAEUDEREINIGUNG GERMANY 374 374 WAGNER GMSM GERMANY 138 136 WAGNER H GERMANY 570 570 WAGNER H a S GARTEN... WOLFGANG PRAYON GERMANY 34 34 WOLLERSHE I M ALFRED GERMANY 47 47 WORMSER AUIOBUSSETRI ED GERMANY 178 178 WUERSCHINGER HANS GERMANY 73 73 WUEST BAU

Seismic reflection-based evidence of a transfer zone between the Wagner and Consag basins: implications for defining the structural geometry of the northern Gulf of California

NASA Astrophysics Data System (ADS)

González-Escobar, Mario; Suárez-Vidal, Francisco; Hernández-Pérez, José Antonio; Martín-Barajas, Arturo

2010-12-01

This study examines the structural characteristics of the northern Gulf of California by processing and interpreting ca. 415 km of two-dimensional multi-channel seismic reflection lines (data property of Petróleos Mexicanos PEMEX) collected in the vicinity of the border between the Wagner and Consag basins. The two basins appear to be a link between the Delfín Superior Basin to the south, and the Cerro Prieto Basin to the north in the Mexicali-Imperial Valley along the Pacific-North America plate boundary. The seismic data are consistent with existing knowledge of four main structures (master faults) in the region, i.e., the Percebo, Santa María, Consag Sur, and Wagner Sur faults. The Wagner and Consag basins are delimited to the east by the Wagner Sur Fault, and to the west by the Consag Sur Fault. The Percebo Fault borders the western margin of the modern Wagner Basin depocenter, and is oriented N10°W, dipping (on average) ˜40° to the northeast. The trace of the Santa María Fault located in the Wagner Basin strikes N19°W, dipping ˜40° to the west. The Consag Sur Fault is oriented N14°W, and dips ˜42° to the east over a distance of 21 km. To the east of the study area, the Wagner Sur Fault almost parallels the Consag Sur Fault over a distance of ˜86 km, and is oriented N10°W with an average dip of 59° to the east. Moreover, the data provide new evidence that the Wagner Fault is discontinuous between the two basins, and that its structure is more complex than previously reported. A structural high separates the northern Consag Basin from the southern Wagner Basin, comprising several secondary faults oriented NE oblique to the main faults of N-S direction. These could represent a zone of accommodation, or transfer zone, where extension could be transferred from the Wagner to the Consag Basin, or vice versa. This area shows no acoustic basement and/or intrusive body, which is consistent with existing gravimetric and magnetic data for the region.

Richard Wagner: Twilight of the Nazi Spell.

ERIC Educational Resources Information Center

Lindemann, Dirk

1985-01-01

Richard Wagner was probably the most influential musician of the 19th century. However, his image as an alleged intellectual-spiritual forerunner of national socialism through his music and prose works fosters aversion among critics. Whether Wagner's complicacy of art and ideology has had any lasting consequence on his reputation is discussed. (RM)

Analysis and Thermodynamic Prediction of Hydrogen Solution in Solid and Liquid Multicomponent Aluminum Alloys

NASA Astrophysics Data System (ADS)

Anyalebechi, P. N.

Reported experimentally determined values of hydrogen solubility in liquid and solid Al-H and Al-H-X (where X = Cu, Si, Zn, Mg, Li, Fe or Ti) systems have been critically reviewed and analyzed in terms of Wagner's interaction parameter. An attempt has been made to use Wagner's interaction parameter and statistic linear regression models derived from reported hydrogen solubility limits for binary aluminum alloys to predict the hydrogen solubility limits in liquid and solid (commercial) multicomponent aluminum alloys. Reasons for the observed poor agreement between the predicted and experimentally determined hydrogen solubility limits are discussed.

A nomenclator of Pacific oceanic island Phyllanthus (Phyllanthaceae), including Glochidion

PubMed Central

Wagner, Warren L.; Lorence, David H.

2011-01-01

Abstract Recent molecular phylogenetic studies and reevaluation of morphological characters have led to the inclusion of Glochidion within a broader delimitation of Phyllanthus. It is necessary for preparation of the Vascular Flora of the Marquesas Islands to make new combinations for the Marquesan species. We also provide the relevant combinations and listing of all of the currently accepted species of Phyllanthus on Pacific oceanic islands for a total of 69 native species in oceanic Pacific islands. Glochidion tooviianum J. Florenceis here placed into synonymy of Phyllanthus marchionicus (F. Br.) W. L. Wagner & Lorence based on new assessment of recently collected specimens from Nuku Hiva. Glochidion excorticans Fosberg var. calvum Fosberg is placed into synonomy of Phyllanthus ponapense (Hosokawa) W. L. Wagner & Lorenceand Glochidion puberulum Hosokawa and Glochidion excorticans Fosberg are placed in synonymy of Phyllanthus senyavinianus (Glassman)W. L. Wagner & Lorence based on new study of all Micronesian specimens available to us. No infraspecific taxa are recognized within Phyllanthus pacificus of the Marquesas Islands. Species already with valid names in Phyllanthus are also listed for completeness and convenience. Brief distributional comments are given for each species. We propose new names for species for which a new combination is not possible: Phyllanthus florencei W. L. Wagner & Lorence, nom. nov., Phyllanthus mariannensis W.L. Wagner & Lorence, nom. nov., Phyllanthus otobedii W. L. Wagner & Lorence, Phyllanthus raiateaensis W. L. Wagner & Lorence, Phyllanthus st-johnii W. L. Wagner & Lorence, nom. nov., and Phyllanthus vitilevuensis W.L. Wagner & Lorence, nom. nov. We provide information for four additional naturalized species within the region (Phyllanthus amarus, Phyllanthus debilis, Phyllanthus tenellus, and Phyllanthus urinaria). The name Glochidion ramiflorum widely applied to Pacific island populations is here considered to be a species further west in the Pacific with all of the oceanic species here referred to several regional species. PMID:22171182

Educating the U.S. Army: Arthur L. Wagner and Reform, 1875-1905.

ERIC Educational Resources Information Center

Brereton, T. R.

Arthur Lockwood Wagner, who graduated from West Point in 1876, was one of the best known and most influential U.S. Army officers of his day. An intellectual and educator, Wagner was instrumental in some of the most critical reforms in U.S. Army history. He advocated enhanced military education, adopting modern combat techniques, holding…

Firth and Wagner (1997): New Ideas or a New Articulation?

ERIC Educational Resources Information Center

Gass, Susan M.; Lee, Junkyu; Roots, Robin

2007-01-01

This article begins with a review of second language acquisition research leading up to the 1997 article by Firth and Wagner. We argue that the Firth and Wagner article did not represent a new direction, but rather continued a type of argumentation that was already prevalent in the field at the time of the 1997 publication. We identify 3 issues as…

Contrasting Predictions of the Extended Comparator Hypothesis and Acquisition-Focused Models of Learning Concerning Retrospective Revaluation

PubMed Central

McConnell, Bridget L.; Urushihara, Kouji; Miller, Ralph R.

2009-01-01

Three conditioned suppression experiments with rats investigated contrasting predictions made by the extended comparator hypothesis and acquisition-focused models of learning, specifically, modified SOP and the revised Rescorla-Wagner model, concerning retrospective revaluation. Two target cues (X and Y) were partially reinforced using a stimulus relative validity design (i.e., AX-Outcome/ BX-No outcome/ CY-Outcome/ DY-No outcome), and subsequently one of the companion cues for each target was extinguished in compound (BC-No outcome). In Experiment 1, which used spaced trials for relative validity training, greater suppression was observed to target cue Y for which the excitatory companion cue had been extinguished relative to target cue X for which the nonexcitatory companion cue had been extinguished. Experiment 2 replicated these results in a sensory preconditioning preparation. Experiment 3 massed the trials during relative validity training, and the opposite pattern of data was observed. The results are consistent with the predictions of the extended comparator hypothesis. Furthermore, this set of experiments is unique in being able to differentiate between these models without invoking higher-order comparator processes. PMID:20141324

The correct name in Oenothera for Gauradrummondii (Onagraceae).

PubMed

Wagner, Warren L; Hoch, Peter C; Zarucchi, James L

2015-01-01

In 2007, Wagner and Hoch proposed the new name Oenotheraxenogaura W.L.Wagner & Hoch for the species then known as Gauradrummondii (Spach) Torrey & A. Gray (non Oenotheradrummondii Hooker, 1834). However, the authors overlooked the availability of Gaurahispida Bentham (1840) for this species. Accordingly, we herewith make the appropriate new combination for this species, Oenotherahispida (Bentham) W.L.Wagner, Hoch & Zarucchi, and place Oenotheraxenogaura in synonymy.

48 CFR 9.107 - Surveys of nonprofit agencies participating in the AbilityOne Program under the Javits-Wagner-O...

Code of Federal Regulations, 2010 CFR

2010-10-01

... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Surveys of nonprofit agencies participating in the AbilityOne Program under the Javits-Wagner-O'Day Act. 9.107 Section 9.107... AbilityOne Program under the Javits-Wagner-O'Day Act. (a) The Committee for Purchase From People Who Are...

Dual-frequency dielectrophoretic levitation of Canola protoplasts.

PubMed

Kaler, K V; Xie, J P; Jones, T B; Paul, R

1992-07-01

A novel dual-frequency excitation technique is introduced which permits investigation of the low-frequency dispersion of Canola plant protoplasts using feedback-controlled dielectrophoretic levitation. The upper and intermediate frequency spectra obtained using the new technique are generally consistent with previous work. However, below some cross-over frequency f(OL), the protoplasts exhibit an apparent positive dielectrophoretic response that is not predicted by conventional theory. This cross-over frequency is linearly related to suspension conductivity, virtually independent of the suspension pH, and inversely proportional to the square of the cell radius. Examination of the complex Clausius-Mossotti polarization coefficient reveals that the observed positive dielectrophoretic response can not be accounted for in terms of Maxwell-Wagner polarization associated with a conventional layered model for the protoplast. The failure of straightforward enhancements to the protoplast model in explaining the low frequency behavior may indicate the presence of an electrophoretic contribution to the net observable force on the particle. To account for such fluid mechanical effects, it will be necessary to modify the existing dielectrophoretic force formulation.

A Rescorla-Wagner drift-diffusion model of conditioning and timing

PubMed Central

Alonso, Eduardo

2017-01-01

Computational models of classical conditioning have made significant contributions to the theoretic understanding of associative learning, yet they still struggle when the temporal aspects of conditioning are taken into account. Interval timing models have contributed a rich variety of time representations and provided accurate predictions for the timing of responses, but they usually have little to say about associative learning. In this article we present a unified model of conditioning and timing that is based on the influential Rescorla-Wagner conditioning model and the more recently developed Timing Drift-Diffusion model. We test the model by simulating 10 experimental phenomena and show that it can provide an adequate account for 8, and a partial account for the other 2. We argue that the model can account for more phenomena in the chosen set than these other similar in scope models: CSC-TD, MS-TD, Learning to Time and Modular Theory. A comparison and analysis of the mechanisms in these models is provided, with a focus on the types of time representation and associative learning rule used. PMID:29095819

Large Angle Unsteady Aerodynamic Theory of a Flat Plate

NASA Astrophysics Data System (ADS)

Manar, Field; Jones, Anya

2016-11-01

A purely analytical approach is taken for the evaluation of the unsteady loads on a flat plate. This allows for an extremely low cost theoretical prediction of the plate loads in the style of Wagner and Theodorsen, without making the assumption of small angle of attack or small disturbance flow. The forces and moments are evaluated using the time rate of change of fluid momentum, expressed as an integral of the vorticity field. The flow is taken as inviscid and incompressible with isolated vorticity bound to the plate and in the shed wake. The bound vorticity distribution on the plate is solved exactly using conformal mapping of the plate to a cylinder. In keeping with the original assumption of Wagner, the wake vorticity is assumed to remain stationary in an inertial reference frame and convection is disregarded. Formulation in this manner allows for a closed form solution of Wagner's problem valid at all angles of attack. Separation from the leading edge of the plate can also be included to further increase the fidelity of the model at high angles.

The correct name in Oenothera for Gaura drummondii (Onagraceae)

PubMed Central

Wagner, Warren L.; Hoch, Peter C.; Zarucchi, James L.

2015-01-01

Abstract In 2007, Wagner and Hoch proposed the new name Oenothera xenogaura W.L.Wagner & Hoch for the species then known as Gaura drummondii (Spach) Torrey & A. Gray (non Oenothera drummondii Hooker, 1834). However, the authors overlooked the availability of Gaura hispida Bentham (1840) for this species. Accordingly, we herewith make the appropriate new combination for this species, Oenothera hispida (Bentham) W.L.Wagner, Hoch & Zarucchi, and place Oenothera xenogaura in synonymy. PMID:26140017

Modeling Sound as a Non-Lethal Weapon in the COMBAT(XXI) Simulation Model

DTIC Science & Technology

2005-06-01

Kilgore in ‘ Apocalypse Now !’ [Ref 4] blasting Wagner from his Cavalry helicopters. Moving from film to recent history, consider how General Noriega...Military Operations Research Society, 71 4. Coppola, F. F. (Producer). (1979). Apocalypse now . [Motion Picture] Hollywood, California: United Artists

Can't sleep? Try these tips

MedlinePlus

... 23320870 . Berry RB, Wagner MH. Behavioral treatment of insomnia. In: Berry RB, Wagner MH, eds. Sleep Medicine ... Davidson JR, Beaulieu-Bonneau S. Cognitive behavior therapies for insomnia. In: Kryger M, Roth T, Dement WC, eds. ...

Chapter 2: Fire and Fuels Extension: Model description

Treesearch

Sarah J. Beukema; Elizabeth D. Reinhardt; Julee A. Greenough; Donald C. E. Robinson; Werner A. Kurz

2003-01-01

The Fire and Fuels Extension to the Forest Vegetation Simulator is a model that simulates fuel dynamics and potential fire behavior over time, in the context of stand development and management. Existing models are used to represent forest stand development (the Forest Vegetation Simulator, Wykoff and others 1982), fire behavior (Rothermel 1972, Van Wagner 1977, and...

An Amorphous Model for Morphological Processing in Visual Comprehension Based on Naive Discriminative Learning

ERIC Educational Resources Information Center

Baayen, R. Harald; Milin, Petar; Durdevic, Dusica Filipovic; Hendrix, Peter; Marelli, Marco

2011-01-01

A 2-layer symbolic network model based on the equilibrium equations of the Rescorla-Wagner model (Danks, 2003) is proposed. The study first presents 2 experiments in Serbian, which reveal for sentential reading the inflectional paradigmatic effects previously observed by Milin, Filipovic Durdevic, and Moscoso del Prado Martin (2009) for unprimed…

NPDES Permit for City of Wagner Wastewater Treatment Facility in South Dakota

EPA Pesticide Factsheets

Under NPDES permit SD-0020184, the City of Wagner, South Dakota is authorized to discharge from its wastewater treatment facility in Charles Mix County, South Dakota, to an unnamed tributary of Choteau Creek.

Revision of Cyrtandra (Gesneriaceae) in the Marquesas Islands

PubMed Central

Wagner, Warren L.; Wagner, Anthony J.; Lorence, David H.

2013-01-01

Abstract During the preparation of the Vascular Flora of the Marquesas Islands three new species of Cyrtandra (Gesneriaceae) have come to light and are described herein: C. uapouensis W. L. Wagner & Lorence, C. uahukaensis W. L. Wagner & Lorence, and C. kenwoodii W. L. Wagner & A. J. Wagner. Amended descriptions of the eight previously described Marquesan species are also provided as well as a key to the species. With the description of these the new species Cyrtandra in the Marquesas Islands consists of 11 species, six of which have been included in recent molecular phylogenetic studies of Pacific Cyrtandra, and appear to have arisen from one original introduction. If the other five species are members of this Marquesas clade then Cyrtandra would represent the largest lineage of Marquesas vascular plants. Psychotria is largest genus in the Marquesas Islands with 13 species, but is thought to consist of three separate lineages. PMID:24399899

The Concentric Support Model: A Model for the Planning and Evaluation of Distance Learning Programs

ERIC Educational Resources Information Center

Osika, Elizabeth

2006-01-01

Each year, the number of institutions offering distance learning courses continues to grow significantly (Green, 2002; National Center for Educational Statistics, 2003; Wagner, 2000). Broskoske and Harvey (2000) explained that "many institutions begin a distance education initiative encouraged by the potential benefits, influenced by their…

Neural Coding of Relational Invariance in Speech: Human Language Analogs to the Barn Owl.

ERIC Educational Resources Information Center

Sussman, Harvey M.

1989-01-01

The neuronal model shown to code sound-source azimuth in the barn owl by H. Wagner et al. in 1987 is used as the basis for a speculative brain-based human model, which can establish contrastive phonetic categories to solve the problem of perception "non-invariance." (SLD)

Dual-frequency dielectrophoretic levitation of Canola protoplasts

PubMed Central

Kaler, Karan V. I. S.; Xie, Jing-Ping; Jones, Thomas B.; Paul, Reginald

1992-01-01

A novel dual-frequency excitation technique is introduced which permits investigation of the low-frequency dispersion of Canola plant protoplasts using feedback-controlled dielectrophoretic levitation. The upper and intermediate frequency spectra obtained using the new technique are generally consistent with previous work. However, below some cross-over frequency fOL, the protoplasts exhibit an apparent positive dielectrophoretic response that is not predicted by conventional theory. This cross-over frequency is linearly related to suspension conductivity, virtually independent of the suspension pH, and inversely proportional to the square of the cell radius. Examination of the complex Clausius-Mossotti polarization coefficient reveals that the observed positive dielectrophoretic response can not be accounted for in terms of Maxwell-Wagner polarization associated with a conventional layered model for the protoplast. The failure of straightforward enhancements to the protoplast model in explaining the low frequency behavior may indicate the presence of an electrophoretic contribution to the net observable force on the particle. To account for such fluid mechanical effects, it will be necessary to modify the existing dielectrophoretic force formulation. PMID:19431842

Computer Modeling of the Effects of Atmospheric Conditions on Sound Signatures

DTIC Science & Technology

2016-02-01

simulation. 11 5. References 1. Attenborough K. Sound propagation in the atmosphere. In: Rossing TD, editor. Springer handbook of...ARL-TR-7602 ● FEB 2016 US Army Research Laboratory Computer Modeling of the Effects of Atmospheric Conditions on Sound ...Laboratory Computer Modeling of the Effects of Atmospheric Conditions on Sound Signatures by Sarah Wagner Science and Engineering Apprentice

BRASS MILL #72 SLITTER, OPERATED BY JOSEPH WAGNER, FORMERLY AN ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

BRASS MILL #72 SLITTER, OPERATED BY JOSEPH WAGNER, FORMERLY AN EMPLOYEE OF REPUBLIC STEEL IN BUFFALO. BRASS STRIP FROM THE SLITTE IS USED ON THE BUFFALO PLANT'S CONTINUOUS SEAMLESS TUBE LINE. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

A conceptual framework for ranking crown fire potential in wildland fuelbeds.

Treesearch

Mark D. Schaaf; David V. Sandberg; Maarten D. Schreuder; Cynthia L. Riccardi

2007-01-01

This paper presents a conceptual framework for ranking the crown fire potential of wildland fuelbeds with forest canopies. This approach extends the work by Van Wagner and Rothermel, and introduces several new physical concepts to the modeling of crown fire behavior derived from the reformulated Rothemel surface fire modeling concepts proposed by Sandberg et al. This...

76 FR 64298 - Committee on Regulation

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-18

... Wagner's research by posting comments to the forum and reading comments submitted to the forum by other... members will discuss Professor Wagner's research by posting comments to the forum and reading comments... discussed, or otherwise evidently inappropriate for posting. When submitting comments, please bear in mind...

Application of the Maxwell-Wagner-Hanai effective medium theory to the analysis of the interfacial polarization relaxations in conducting composite films

NASA Astrophysics Data System (ADS)

J-P Adohi, B.; Vanga Bouanga, C.; Fatyeyeva, K.; Tabellout, M.

2009-01-01

A new approach to explain the interfacial polarization phenomenon in conducting composite films is proposed. HCl-doped poly(ethylene terephthalate) (PET) and polyamide-6 (PA-6) matrices with embedded polyaniline (PANI) particles as filler were investigated and analysed, combining dielectric spectroscopy and AFM electrical images with the effective medium theory analysis. Up to three relaxation peaks attributed to the interfacial polarization phenomena were detected in the studied frequency range (0.1 Hz-1 MHz). The AFM electrical images revealed that the doped PA-6/PANI composite can be modelled as a single-type particle medium and the PET/PANI one as a two-type particle medium. A simple dielectric loss expression was derived from the Maxwell-Wagner-Hanai mixture equation and was applied to the experimental data to identify the interfaces involved in each of the relaxation peaks. The parameter values (permittivity, conductivity, volume fraction of the PANI particles) were found to agree well with the measured one, hence validating the models.

The perilous world of the wardrobe

NASA Astrophysics Data System (ADS)

Gillies, James

2010-01-01

Last spring a man called Walter Wagner claimed that if you can conceive of two possible outcomes to an event, then the probability of each one happening is 50:50. His pronouncement came in an episode of The Daily Show, a US satirical news TV programme, but he was not trying to be funny. Wagner, a plaintiff in a 2008 court case in Hawaii that tried to prevent CERN from switching on the Large Hadron Collider (LHC), has long believed that experiments at the collider could cause the world to go up in a puff of smoke. And the probability of this happening, as conceived by Wagner, is one in two. Scary.

Thinking Styles and Quality of University Life Among Deaf or Hard of Hearing and Hearing Students.

PubMed

Cheng, Sanyin; Zhang, Li-Fang

2017-01-01

The authors explored how thinking styles relate to quality of university life among deaf or hard of hearing (DHH) and hearing university students in mainland China. The first of two studies affirmed the validity and reliability of a modified version of the Quality of University Life Measure (QULM; Sirgy, Grezskowiak, & Rahtz, 2007) among 833 university students (366 DHH, 467 hearing). The second investigated relationships between thinking styles and quality of university life; the Thinking Styles Inventory-Revised II (Sternberg, Wagner, & Zhang, 2007) and modified QULM were administered to 542 students (256 DHH, 286 hearing). Students scoring higher on Type I styles (i.e., more creativity-generating, less structured, cognitively more complex) tended toward greater satisfaction with university life; those scoring higher on Type II (i.e., more norm-favoring, more structured, cognitively more simplistic) tended toward less satisfaction. Contributions, limitations, and implications of the research are discussed.

78 FR 31430 - Proposed Establishment of Class E Airspace; Wagner, SD

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-24

... accommodate new Standard Instrument Approach Procedures (SIAP) at Wagner Municipal Airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations for SIAPs... approach procedures at the airport. Controlled airspace is needed for the safety and management of IFR...

Darwin and Wagner: Evolution and Aesthetic Appreciation

ERIC Educational Resources Information Center

Ostergaard, Edvin

2011-01-01

Two of the most influential works of the Western nineteenth century were completed in 1859: Charles Darwin's "The Origin of Species" and Richard Wagner's opera "Tristan and Isolde." Although created within very different cultural traditions, these works show some striking similarities: both brought about a critical, long-lasting debate and caused…

Metrosideros polymorpha Gaudich

Treesearch

James A. Allen

2002-01-01

Metrosideros is a genus of about 50 species. With the exception of one species found in South Africa, all grow in the Pacific from the Philippines, through Papua New Guinea, to New Zealand and on high volcanic islands (Wagner and others 1990). Five species occur in the Hawaiian Islands (Wagner and others 1990). Metrosideros polymorpha...

Modelling Precipitation Kinetics During Aging of Al-Mg-Si Alloys

NASA Astrophysics Data System (ADS)

Du, Qiang; Friis, Jepser

A classical Kaufmann-Wagner numerical model is employed to predict the evolution of precipitate size distribution during the aging treatment of Al-Mg-Si alloys. One feature of the model is its fully coupling with CALPHAD database, and with the input of interfacial energy from ab-initial calculation, it is able to capture the morphological change of the precipitates. The simulation results will be compared with the experimental measurements.

Knee arthrodesis in failed total knee arthroplasty with severe osteolysis and ipsilateral long-stem total hip arthroplasty.

PubMed

Sim, Jae Ang; Lee, Beom Koo; Kwak, Ji Hoon; Moon, Sung Hoon

2009-02-01

We report a case of knee fusion after a failed total knee arthroplasty (TKA) with severe osteolysis including the epicondyle and ipsilateral total hip arthroplasty (THA) with long Wagner revision stem (Sulzer Orthopedics, Baar, Switzerland). The conventional devices for arthrodesis were unavailable in this case because of the long Wagner revision stem and poor bone stock. A connector was made between the long Wagner revision stem and an intramedullary nail (IM nail; Solco, Seoul, Korea). The custom-made connector was coupled with a femoral stem by cylindrical taper fit with additional cement augmentation and an intramedullary nail by screws. Osseous fusion was achieved without pain or instability.

First nearctic records for Orius (Dimorphella) sibiricus Wagner (Hemiptera: Heteroptera: Anthocoridae), a Eurasian steppe inhabitant

USDA-ARS?s Scientific Manuscript database

Orius sibiricus Wagner, a dark-colored minute pirate bug widespread in the Eurasian Steppe, is recorded from sites near the Yukon River in Yukon, Canada. This species is distinguished from the melanic phenotype of Orius diespeter Herring by the more deeply and uniformly punctured dorsum, the subangu...

Institutional Practices That Support Students with Autism Spectrum Disorders in a Postsecondary Educational Setting

ERIC Educational Resources Information Center

Brown, Kirsten Ruth

2012-01-01

Almost 11% of college students have a disability (Newman, Wagner, Cameto, Knokey, & Shaver, 2010). Existing research indicates that students with disabilities have difficulty with retention and graduation (Newman, Wagner, Cameto, & Knokey, 2009). Autism Spectrum Disorder (ASD) is a type of disability that has increased among students in…

77 FR 46411 - Procurement List; Proposed Additions and Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-03

.... There are no known regulatory alternatives which would accomplish the objectives of the Javits-Wagner-O...-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection with the products and services proposed for deletion... Reserve Command, Atlanta, GA. NPA: WORKTEC, Jonesboro, GA Contracting Activity: Dept of the Army, W6qM...

75 FR 63446 - Procurement List Proposed Additions And Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-15

... objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in connection with the product and services... M. Albright Training Center, 1 Albright Avenue Grand Canyon, AZ NPA: Trace, Inc., Boise, ID.... There are no known regulatory alternatives which would accomplish the objectives of the Javits-Wagner-O...

Self-Concept and Perceived Social Support of College Women with Disabilities

ERIC Educational Resources Information Center

Hellstrom-Kinder, Candace

2013-01-01

Young female adults with disabilities are at risk for difficult lives. The transition from high school to post-secondary education is fraught with difficulties for disabled persons and research indicates they do not fare as well as their non-disabled peers (Wagner, 1992; Wagner, Newman, Cameto & Levine, 2005). In addition, gender disparities…

Armed Deterrence: Countering Soft Target Attacks

DTIC Science & Technology

2016-02-06

Perspectives on Terrorism 9, no. 4 (August 2015): 14-30. 6 Ibid., 19. 7 Ibid., 16. 8 Ibid. 9 Ibid., 14. 10 Ibid., 27. 11 Meg Wagner and Rich...Wagner, Meg and Rich Schapiro. “Mastermind of Paris terror attack planned strikes on schools, mocked Europe’s open borders: report,” New York Daily

Reduction of the Hawaiian genus Platydesma into Melicope section Pelea (Rutaceae) and notes on the monophyly of the section.

PubMed

Appelhans, Marc S; Wood, Kenneth R; Wagner, Warren L

2017-01-01

Platydesma , an endemic genus to the Hawaiian Islands containing four species, has long been considered of obscure origin. Recent molecular phylogenetic studies have unequivocally placed Platydesma within the widespread genus Melicope as sister to the rest of the Hawaiian species of Melicope . This makes submerging Platydesma into Melicope necessary. We make the necessary new combinations: Melicope cornuta (Hillebr.) Appelhans, K.R. Wood & W.L. Wagner, M. cornuta var. decurrens (B.C.Stone) Appelhans, K.R. Wood & W.L. Wagner, M. remyi (Sherff) Appelhans, K.R. Wood & W.L. Wagner, and M. rostrata (Hillebr.) Appelhans, K.R. Wood & W.L. Wagner. An additional species that has been recognized within Platydesma should now be recognized under its original name M. spathulata A. Gray. All Hawaiian species belong to Melicope section Pelea. Our molecular phylogenetic studies also showed that in addition to merging Platydesma into section Pelea, five species described from New Caledonia need to be excluded from the section in order to achieve monophyly of section Pelea.

Mermin-Wagner fluctuations in 2D amorphous solids.

PubMed

Illing, Bernd; Fritschi, Sebastian; Kaiser, Herbert; Klix, Christian L; Maret, Georg; Keim, Peter

2017-02-21

In a recent commentary, J. M. Kosterlitz described how D. Thouless and he got motivated to investigate melting and suprafluidity in two dimensions [Kosterlitz JM (2016) J Phys Condens Matter 28:481001]. It was due to the lack of broken translational symmetry in two dimensions-doubting the existence of 2D crystals-and the first computer simulations foretelling 2D crystals (at least in tiny systems). The lack of broken symmetries proposed by D. Mermin and H. Wagner is caused by long wavelength density fluctuations. Those fluctuations do not only have structural impact, but additionally a dynamical one: They cause the Lindemann criterion to fail in 2D in the sense that the mean squared displacement of atoms is not limited. Comparing experimental data from 3D and 2D amorphous solids with 2D crystals, we disentangle Mermin-Wagner fluctuations from glassy structural relaxations. Furthermore, we demonstrate with computer simulations the logarithmic increase of displacements with system size: Periodicity is not a requirement for Mermin-Wagner fluctuations, which conserve the homogeneity of space on long scales.

Mermin-Wagner fluctuations in 2D amorphous solids

NASA Astrophysics Data System (ADS)

Illing, Bernd; Fritschi, Sebastian; Kaiser, Herbert; Klix, Christian L.; Maret, Georg; Keim, Peter

2017-02-01

In a recent commentary, J. M. Kosterlitz described how D. Thouless and he got motivated to investigate melting and suprafluidity in two dimensions [Kosterlitz JM (2016) J Phys Condens Matter 28:481001]. It was due to the lack of broken translational symmetry in two dimensions—doubting the existence of 2D crystals—and the first computer simulations foretelling 2D crystals (at least in tiny systems). The lack of broken symmetries proposed by D. Mermin and H. Wagner is caused by long wavelength density fluctuations. Those fluctuations do not only have structural impact, but additionally a dynamical one: They cause the Lindemann criterion to fail in 2D in the sense that the mean squared displacement of atoms is not limited. Comparing experimental data from 3D and 2D amorphous solids with 2D crystals, we disentangle Mermin-Wagner fluctuations from glassy structural relaxations. Furthermore, we demonstrate with computer simulations the logarithmic increase of displacements with system size: Periodicity is not a requirement for Mermin-Wagner fluctuations, which conserve the homogeneity of space on long scales.

Mermin–Wagner fluctuations in 2D amorphous solids

PubMed Central

Illing, Bernd; Fritschi, Sebastian; Kaiser, Herbert; Klix, Christian L.; Maret, Georg; Keim, Peter

2017-01-01

In a recent commentary, J. M. Kosterlitz described how D. Thouless and he got motivated to investigate melting and suprafluidity in two dimensions [Kosterlitz JM (2016) J Phys Condens Matter 28:481001]. It was due to the lack of broken translational symmetry in two dimensions—doubting the existence of 2D crystals—and the first computer simulations foretelling 2D crystals (at least in tiny systems). The lack of broken symmetries proposed by D. Mermin and H. Wagner is caused by long wavelength density fluctuations. Those fluctuations do not only have structural impact, but additionally a dynamical one: They cause the Lindemann criterion to fail in 2D in the sense that the mean squared displacement of atoms is not limited. Comparing experimental data from 3D and 2D amorphous solids with 2D crystals, we disentangle Mermin–Wagner fluctuations from glassy structural relaxations. Furthermore, we demonstrate with computer simulations the logarithmic increase of displacements with system size: Periodicity is not a requirement for Mermin–Wagner fluctuations, which conserve the homogeneity of space on long scales. PMID:28137872

Advective and Conductive Heat Flow Budget Across the Wagner Basin, Northern Gulf of California

NASA Astrophysics Data System (ADS)

Neumann, F.; Negrete-Aranda, R.; Contreras, J.; Müller, C.; Hutnak, M.; Gonzalez-Fernandez, A.; Harris, R. N.; Sclater, J. G.

2015-12-01

In May 2015, we conducted a cruise across the northern Gulf of California, an area of continental rift basin formation and rapid deposition of sediments. The cruise was undertaken aboard the R/V Alpha Helix; our goal was to study variation in superficial conductive heat flow, lateral changes in the shallow thermal conductivity structure, and advective transport of heat across the Wagner basin. We used a Fielax heat flow probe with 22 thermistors that can penetrate up to 6 m into the sediment cover. The resulting data set includes 53 new heat flow measurements collected along three profiles. The longest profile (42 km) contains 30 measurements spaced 1-2 km apart. The western part of the Wagner basin (hanging wall block) exhibit low to normal conductive heat flow whereas the eastern part of the basin (foot wall block) heat flow is high to very high (up to 2500 mWm-2). Two other short profiles (12 km long each) focused on resolving an extremely high heat flow anomaly up to 15 Wm-2 located near the intersection between the Wagner bounding fault system and the Cerro Prieto fault. We hypothesize that the contrasting heat flow values observed across the Wagner basin are due to horizontal water circulation through sand layers and fault pathways of high permeability. Circulation appears to be from west (recharge zone) to east (discharge zone). Additionally, our results reveal strong vertical advection of heat due to dehydration reactions and compaction of fine grained sediments.

The Chronic Care Model: A Collaborative Approach to Preventing and Treating Asthma in Infants and Young Children

ERIC Educational Resources Information Center

Wessel, Lois; Spain, Jacqueline

2005-01-01

The authors that a collaborative approach between parents and professionals is the best way to care for a young child with asthma. They use Ed Wagner's transdisciplinary 1998 Chronic Care Model as their preferred method for collaboration. More than 5 million children in the U.S. are currently affected by asthma, and a growing body of evidence…

76 FR 38640 - Procurement List; Additions and Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-01

...-Wagner-O'Day Act (41 U.S.C. 46- 48c) in connection with the products and services proposed for addition... aggregated by the Department of Veterans Affairs National Acquisition Center, Hines, IL. NSN: M.R. 860... alternatives which would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in...

78 FR 75912 - Procurement List; Addition and Deletion

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-13

... nonprofit agency to provide the service and impact of the addition on the current or most recent contractors... would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection with... would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection with...

A new species of the stilt bug genus Gampsocoris from Senegal and a new generic combination for Gampsocoris gomeranus Wagner (Heteroptera: Berytidae: Gampsocorinae)

USDA-ARS?s Scientific Manuscript database

The relationships the African gampsocorine (Gampsocorinae) genera Gampsoacantha Josifov and Štusak, Gampsocoris Fuss, and Micrometacanthus are discussed. Gampsocoris gomeranus Wagner, having a median anterior spine, three basal processes on the pronotum, and a short, round antennal segment IV, is t...

Efficient Nazarov Cyclization/Wagner-Meerwein Rearrangement Terminated by a Cu(II)-Promoted Oxidation: Synthesis of 4-Alkylidene Cyclopentenones

PubMed Central

Lebœuf, David; Theiste, Eric; Gandon, Vincent; Daifuku, Stephanie L.; Neidig, Michael L.

2013-01-01

The discovery and elucidation of a novel Nazarov cyclization/Wagner-Meerwein rearrangement/oxidation sequence is described, which constitutes an efficient strategy for the synthesis of 4-alkylidene cyclopentenones. DFT computations and EPR experiments were conducted to gain further mechanistic insight into the reaction pathways. PMID:23436470

A Model of Public Scholarship That Integrates Professional Skills into Graduate Education

ERIC Educational Resources Information Center

Knudson, Kandace M.; Gutstein, Joyce; Evans, Emily R.

2011-01-01

Graduate students education is falling short of what the twenty-first century demands from its next generation of leaders; indeed, many educational leaders and scholars have called for graduate education to include richer, more relevant experiences (Stanton & Wagner, 2006; Stewart, 2010; Walker, Jones, Bueschel, & Hutchings, 2008). At the…

Normative and descriptive accounts of the influence of power and contingency on causal judgement.

PubMed

Perales, José C; Shanks, David R

2003-08-01

The power PC theory (Cheng, 1997) is a normative account of causal inference, which predicts that causal judgements are based on the power p of a potential cause, where p is the cause-effect contingency normalized by the base rate of the effect. In three experiments we demonstrate that both cause-effect contingency and effect base-rate independently affect estimates in causal learning tasks. In Experiment 1, causal strength judgements were directly related to power p in a task in which the effect base-rate was manipulated across two positive and two negative contingency conditions. In Experiments 2 and 3 contingency manipulations affected causal estimates in several situations in which power p was held constant, contrary to the power PC theory's predictions. This latter effect cannot be explained by participants' conflation of reliability and causal strength, as Experiment 3 demonstrated independence of causal judgements and confidence. From a descriptive point of view, the data are compatible with Pearce's (1987) model, as well as with several other judgement rules, but not with the Rescorla-Wagner (Rescorla & Wagner, 1972) or power PC models.

Developing a new parameterization framework for the heterogeneous ice nucleation of atmospheric aerosol particles

NASA Astrophysics Data System (ADS)

Ullrich, Romy; Hiranuma, Naruki; Hoose, Corinna; Möhler, Ottmar; Niemand, Monika; Steinke, Isabelle; Wagner, Robert

2014-05-01

Developing a new parameterization framework for the heterogeneous ice nucleation of atmospheric aerosol particles Ullrich, R., Hiranuma, N., Hoose, C., Möhler, O., Niemand, M., Steinke, I., Wagner, R. Aerosols of different nature induce microphysical processes of importance for the Earth's atmosphere. They affect not only directly the radiative budget, more importantly they essentially influence the formation and life cycles of clouds. Hence, aerosols and their ice nucleating ability are a fundamental input parameter for weather and climate models. During the previous years, the AIDA (Aerosol Interactions and Dynamics in the Atmosphere) cloud chamber was used to extensively measure, under nearly realistic conditions, the ice nucleating properties of different aerosols. Numerous experiments were performed with a broad variety of aerosol types and under different freezing conditions. A reanalysis of these experiments offers the opportunity to develop a uniform parameterization framework of ice formation for many atmospherically relevant aerosols in a broad temperature and humidity range. The analysis includes both deposition nucleation and immersion freezing. The aim of this study is to develop this comprehensive parameterization for heterogeneous ice formation mainly by using the ice nucleation active site (INAS) approach. Niemand et al. (2012) already developed a temperature dependent parameterization for the INAS- density for immersion freezing on desert dust particles. In addition to a reanalysis of the ice nucleation behaviour of desert dust (Niemand et al. (2012)), volcanic ash (Steinke et al. (2010)) and organic particles (Wagner et al. (2010,2011)) this contribution will also show new results for the immersion freezing and deposition nucleation of soot aerosols. The next step will be the implementation of the parameterizations into the COSMO- ART model in order to test and demonstrate the usability of the framework. Hoose, C. and Möhler, O. (2012) Atmos. Chem. Phys. 12, 9817-9854 Niemand, M., Möhler, O., Vogel, B., Hoose, C., Connolly, P., Klein, H., Bingemer, H., DeMott, P.J., Skrotzki, J. and Leisner, T. (2012) J. Atmos. Sci. 69, 3077-3092 Steinke, I., Möhler, O., Kiselev, A., Niemand, M., Saathoff, H., Schnaiter, M., Skrotzki, J., Hoose, C. and Leisner, T. (2011) Atmos. Chem. Phys. 11, 12945-12958 Wagner, R., Möhler, O., Saathoff, H., Schnaiter, M. and Leisner, T. (2010) Atmos. Chem. Phys. 10, 7617-7641 Wagner, R., Möhler, O., Saathoff, H., Schnaiter, M. and Leisner, T. (2011) Atmos. Chem. Phys. 11, 2083-2110

Common Core State Standards for Mathematics: Love It or Hate It, Understand Those Who Don't

ERIC Educational Resources Information Center

Wagner, Patty Anne

2016-01-01

In this commentary, Wagner points out that the Common Core State Standards for Mathematics (CCSSM) has fueled strong reactions on either end of the spectrum, compelling its supporters and critics to argue their positions. Naturally neither side have interest in entertaining the arguments of the other. Wagner claims, however, that you develop the…

76 FR 18188 - Procurement List; Proposed Additions and Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-01

... objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in connection with the products and service....S. Coast Guard. Spinner, Salad NSN: M.R. 850. NPA: Industries for the Blind, Inc., West Allis, WI... alternatives which would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in...

The Marine Corps Martial Arts Program: Sustaining the Transformation

DTIC Science & Technology

2002-04-01

Approved: _______________ Date: _______________ Mentor: Colonel Robert P. Wagner, USMC Approved: _______________ Date: _______________ REPORT... Robert Debs Heinl Jr., USMC (Ret.), Soldiers of the Sea (Annapolis, MD: United States Naval Institute, 1962), 603. 7 constituency of the force, as well...changes over decades, the Marine Corps has shown the ability to adapt its training to meet those conditions. As Colonel Robert Wagner noted, over time

Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae)

PubMed Central

Wagner, Warren L.; Clark, John R.; Lorence, David H.

2014-01-01

Abstract During the preparation of the Vascular Flora of the Marquesas Islands four new species of Bidens (Coreopsideae, Asteraceae) have come to light and are described herein: Bidens woodii W.L. Wagner, J.R. Clark & Lorence, sp. nov. from Ua Pou, and Bidens microcephala W.L. Wagner, J.R. Clark & Lorence sp. nov., Bidens evapelliana W.L. Wagner, J.R. Clark & Lorence, sp. nov., and Bidens wichmanii W.L. Wagner, J.R. Clark & Lorence, sp. nov. from the undercollected island of Fatu Hiva. In addition to these new species, we recognize the following six species of Bidens previously described from the Marquesas Islands: Bidens beckiana (F. Br.) Sherff (Eiao and Hatutaa), Bidens bipontina Sherff and Bidens cordifolia Sch. Bip. (both in Nuku Hiva), Bidens henryi Sherff (Hiva Oa, Tahuata), Bidens uapensis (F. Br.) Sherff (Ua Pou), and Bidens polycephala Sch. Bip. (Nuku Hiva, Ua Huku, Hiva Oa, Tahuata, and Mohotani). Two names are reduced to synonymy under Bidens polycephala: Bidens collina Degener & Sherff, syn. nov. and Bidens jardinii Sch. Bip., syn. nov. Bidens polycephala has the widest distribution of the Marquesan species on five of the islands and exhibits considerable variation. PMID:25009437

Transfemoral implantation of the Wagner SL stem. The abolition of subsidence and enhancement of osteotomy union rate using Dall-Miles cables.

PubMed

Warren, P J; Thompson, P; Fletcher, M D A

2002-12-01

The Wagner SL uncemented revision stem has been utilised successfully for revision hip surgery where marked loss of proximal bone stock co-exists or where there is a periprosthetic fracture. Implanted via the transfemoral approach, one significant difficulty appears to be a tendency for implant subsidence, which in some cases has been troublesome enough to necessitate early revision (usually to a larger prosthesis). A change in our operative practice allowed us to review the effects of using either wire cerclages or 2.0 mm Dall-Miles cables for prophylactic wiring of the distal femur. Seventeen Wagner SL stems, inserted via the transfemoral approach, were studied in 16 patients. We found those patients prophylactically wired with Dall-Miles cables demonstrated no subsidence in comparison with those in whom heavy wire cerclage had been utilised (mean subsidence 6 mm; p=0.001). In addition, we found that closure of the proximal osteotomy with wires conferred a more reliable rate of union in comparison with those closed with heavy sutures. We recommend the use of Dall-Miles cables for distal cerclage and osteotomy closure for the Wagner prosthesis.

Auger parameter and Wagner plot studies of small copper clusters

NASA Astrophysics Data System (ADS)

Moretti, Giuliano; Palma, Amedeo; Paparazzo, Ernesto; Satta, Mauro

2016-04-01

We discuss application of the Auger parameter and Wagner plot concepts to the study of small copper clusters deposited on various supports such as C(graphite), SiO2 and Al2O3. We demonstrate that the cluster size and the electronic properties of the support influence the shifts of both the binding energy of the Cu 2p3/2 transition and the kinetic energy of the Cu L3M45M45; 1G Auger transition. We find that the Cu L3M45M45; 1G-2p3/2 Auger parameter and Wagner plot allow one to single out and measure both initial- and final-state effects with a detail which is superior to that achieved in photoemission studies.

"We Weren't Going to Let the Events Define Us"

ERIC Educational Resources Information Center

Wilson, Robin

2008-01-01

The day after a Virginia Tech student gunned down 32 people last April, a young alumnus named Johnson Wagner donned a baseball cap with the VT logo. Then a rookie golfer on the PGA Tour, Mr. Wagner wore the hat while competing in a tournament in South Carolina. There, he voiced a concern shared by many people in Blacksburg, Virginia: "I simply…

Efficient Nazarov cyclization/Wagner-Meerwein rearrangement terminated by a Cu(II)-promoted oxidation: synthesis of 4-alkylidene cyclopentenones.

PubMed

Lebœuf, David; Theiste, Eric; Gandon, Vincent; Daifuku, Stephanie L; Neidig, Michael L; Frontier, Alison J

2013-04-08

The discovery and elucidation of a new Nazarov cyclization/Wagner-Meerwein rearrangement/oxidation sequence is described that constitutes an efficient strategy for the synthesis of 4-alkylidene cyclopentenones. DFT computations and EPR experiments were conducted to gain further mechanistic insight into the reaction pathways. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

20 CFR 661.240 - How do the unified planning requirements apply to the five-year strategic WIA and Wagner-Peyser...

Code of Federal Regulations, 2011 CFR

2011-04-01

... 20 Employees' Benefits 3 2011-04-01 2011-04-01 false How do the unified planning requirements apply to the five-year strategic WIA and Wagner-Peyser plan and to other Department of Labor plans? 661... ACT State Governance Provisions § 661.240 How do the unified planning requirements apply to the five...

A Model for the Detection of Moving Targets in Visual Clutter Inspired by Insect Physiology

DTIC Science & Technology

2008-07-01

paper: SDW PS DCO. References 1. Wagner H (1986) Flight performance and visual control of flight of the free- flying housefly (Musca domestica L) 3...differences in the chasing behaviour of houseflies (musca). Biol Cybern 32: 239–241. 3. Land MF (1997) Visual acuity in insects. Annu Rev Entomol 42: 147

Stimulus-Outcome Learnability Differentially Activates Anterior Cingulate and Hippocampus at Feedback Processing

ERIC Educational Resources Information Center

Rodriguez, Paul F.

2009-01-01

Memory systems are known to be influenced by feedback and error processing, but it is not well known what aspects of outcome contingencies are related to different memory systems. Here we use the Rescorla-Wagner model to estimate prediction errors in an fMRI study of stimulus-outcome association learning. The conditional probabilities of outcomes…

Electronic conductivity of Ce0.9Gd0.1O(1.95-δ) and Ce0.8Pr0.2O(2-δ): Hebb-Wagner polarisation in the case of redox active dopants and interference.

PubMed

Chatzichristodoulou, C; Hendriksen, P V

2011-12-28

The electronic conductivity of Ce(0.9)Gd(0.1)O(1.95-δ) and Ce(0.8)Pr(0.2)O(2-δ) under suppressed ionic flow was measured as a function of pO(2) in the range from 10(3) atm to 10(-17) atm for temperatures between 600 °C and 900 °C by means of Hebb-Wagner polarisation. The steady state I-V curve of Ce(0.9)Gd(0.1)O(1.95-δ) could be well described by the standard Hebb-Wagner equation [M. H. Hebb, J. Chem. Phys., 1952, 20, 185; C. Wagner, Z. Elektrochem., 1956, 60, 4], yielding expressions for the n- and p-type conductivity as a function of pO(2). On the other hand, significant deviation of the steady state I-V curve from the standard Hebb-Wagner equation was observed for the case of Ce(0.8)Pr(0.2)O(2-δ). It is shown that the I-V curve can be successfully reproduced when the presence of the redox active dopant, Pr(3+)/Pr(4+), is taken into account, whereas even better agreement can be reached when further taking into account the interference between the ionic and electronic flows [C. Chatzichristodoulou, W.-S. Park, H.-S. Kim, P. V. Hendriksen and H.-I. Yoo, Phys. Chem. Chem. Phys., 2010, 12, 33]. Expressions are deduced for the small polaron mobilities in the Ce 4f and Pr 4f bands of Ce(0.8)Pr(0.2)O(2-δ).

New combinations for Pacific endemic species: Marquesan Poaceae, and Micronesian Myrtaceae.

PubMed

Tornabene, Michael W; Wagner, Warren L

2013-01-01

As part of the preparation for a comprehensive online flora of Pacific oceanic islands, numerous taxonomic changes have been necessary, primarily due to a new wealth of global molecular phylogenetic studies on genera that include Pacific islands species. In order to compile an accurate checklist of the Pacific island flora with up-to-date taxonomies, we are moving several species to their currently accepted genera. Two Marquesan Pennisetum Rich. are transferred to Cenchrus L. with the new combinations Cenchrus articularis (Trin.) M. Tornabene & W.L. Wagner, and Cenchrus henryanus (F. Br.) M. Tornabene & W.L. Wagner. A key to Marquesas Cenchrus is also provided to differentiate the two species. Additionally, one species of Eugenia L. is transferred to Syzygium Gaertn. with the new combination Syzygium stelechanthoides (Kaneh.) M. Tornabene & W.L. Wagner in accord with the aforementioned studies.

Revision of Coprosma (Rubiaceae, tribe Anthospermeae) in the Marquesas Islands

PubMed Central

Wagner, Warren L.; Lorence, David H.

2011-01-01

Abstract During the preparation of the Vascular Flora of the Marquesas Islands three new species of Coprosma (Rubiaceae, tribe Anthospermeae) have come to light and are described herein: Coprosma fatuhivaensis W. L. Wagner & Lorence, Coprosma meyeri W. L. Wagner & Lorence, and Coprosma temetiuensis W. L. Wagner & Lorence. Descriptions, illustrations, conservation status, and specimen citations are provided. Amended descriptions of three previously described Marquesan Coprosma species are also provided as well as a key to the species, four of which fall into the Critically Endangered (CR) and two into the Endangered (EN) category. With the description of these the new species, Coprosma becomes the sixth largest lineage in the Marquesas Islands with six species after Psychotria (one lineage which has 9 spp.), Cyrtandra (8 spp.), Bidens (8 spp.), Melicope (7 spp.), and Ixora (7 spp.). PMID:22171184

Dielectric and modulus studies of polycrystalline BaZrO3 ceramic

NASA Astrophysics Data System (ADS)

Saini, Deepash S.; Singh, Sunder; Kumar, Anil; Bhattacharya, D.

2018-05-01

In the present work, dielectric and modulus studies of polycrystalline BaZrO3 ceramic, prepared by modified combustion method followed by conventional sintering, are investigated over the frequency range of 100 Hz to 106 Hz at different temperatures from 250 to 500 °C in air. The high value of dielectric constant (ɛ' ˜ 103) of BaZrO3 at high temperature and low frequency can be attributed to the Maxwell-Wagner polarization mechanism as well as to the thermally activated mechanism of charge carriers. Electric modulus reveal two type relaxations in the 250 °C to 800 °C temperature region as studied at different frequencies over 100 Hz to 106 Hz in air.

Hand Anthropometry of U.S. Army Personnel

DTIC Science & Technology

1991-12-01

warrant extra attention . Dr. Parham has been extreme! y helpful in obtaining the necessary resources to keep the hand system running, and in listening to...ethnicjracial groups. A report by Wagner ( 1988) explored the anthropometry of 127· male arrl 111 female pianists . Wagner was able to show that the...harrls of professional pianists , as a specialized occupational group, are unique in their anthropometric characteristics when compared with nDre

Revised Chapman-Enskog analysis for a class of forcing schemes in the lattice Boltzmann method

NASA Astrophysics Data System (ADS)

Li, Q.; Zhou, P.; Yan, H. J.

2016-10-01

In the lattice Boltzmann (LB) method, the forcing scheme, which is used to incorporate an external or internal force into the LB equation, plays an important role. It determines whether the force of the system is correctly implemented in an LB model and affects the numerical accuracy. In this paper we aim to clarify a critical issue about the Chapman-Enskog analysis for a class of forcing schemes in the LB method in which the velocity in the equilibrium density distribution function is given by u =∑αeαfα / ρ , while the actual fluid velocity is defined as u ̂=u +δtF / (2 ρ ) . It is shown that the usual Chapman-Enskog analysis for this class of forcing schemes should be revised so as to derive the actual macroscopic equations recovered from these forcing schemes. Three forcing schemes belonging to the above class are analyzed, among which Wagner's forcing scheme [A. J. Wagner, Phys. Rev. E 74, 056703 (2006), 10.1103/PhysRevE.74.056703] is shown to be capable of reproducing the correct macroscopic equations. The theoretical analyses are examined and demonstrated with two numerical tests, including the simulation of Womersley flow and the modeling of flat and circular interfaces by the pseudopotential multiphase LB model.

Modification of VanWagner's canopy fire propagation model

Treesearch

James Dickinson; Andrew Robinson; Richy Harrod; Paul Gessler; Alistair Smith

2007-01-01

The conditions necessary for the combustion of canopy fuels are not well known but are assumed to be highly influenced by the volume through which the canopy fuels are dispersed, known as canopy bulk density (CBD). Propagating crown fire is defined as a continuous wall of flame from the bottom to the top of the canopy, implying crown fire propagation is actually...

The Effects of Basolateral Amygdala Lesions on Unblocking

PubMed Central

Chang, Stephen E.; McDannald, Michael A.; Wheeler, Daniel S.; Holland, Peter C.

2012-01-01

Prior reinforcement of a neutral stimulus often blocks subsequent conditioning of a new stimulus if a compound of the original and new cues is paired with the same reinforcer. However, if the value of the reinforcer is altered when the compound is presented, the new cue typically acquires conditioning, a result called unblocking. Blocking, unblocking and related phenomena have been attributed to variations in processing of either the reinforcer, for example, the Rescorla-Wagner (1972) model, or cues, for example, the Pearce-Hall (1980) model. Here, we examined the effects of lesions of the basolateral amygdala on the occurrence of unblocking when the food reinforcer was increased in quantity at the time of introduction of the new cue. The lesions had no effects on unblocking in a simple design (Experiment 1), which did not distinguish between unblocking produced by variations in reward or cue processing. However, in a procedure that distinguished between unblocking due to direct conditioning by the added reinforcer, consistent with the Rescorla-Wagner (1972) model, and that due to increases in conditioning to the original reinforcer, consistent with the Pearce-Hall (1980) and other models of learning, the lesions prevented unblocking of the latter type. These results were discussed in the context of roles of the basolateral amygdala in coding and using reward prediction error information in associative learning. PMID:22448857

Test Review: Wagner, R. K., Torgesen, J. K., Rashotte, C. A., & Pearson, N. A., "Comprehensive Test of Phonological Processing-2nd Ed. (CTOPP-2)." Austin, Texas: Pro-Ed

ERIC Educational Resources Information Center

Dickens, Rachel H.; Meisinger, Elizabeth B.; Tarar, Jessica M.

2015-01-01

The Comprehensive Test of Phonological Processing-Second Edition (CTOPP-2; Wagner, Torgesen, Rashotte, & Pearson, 2013) is a norm-referenced test that measures phonological processing skills related to reading for individuals aged 4 to 24. According to its authors, the CTOPP-2 may be used to identify individuals who are markedly below their…

The pre-Anschluss Vienna School of Medicine - the physicians: Sigmund Freud (1856-1939), Julius Wagner-Jauregg (1857-1940) and Karel Wenckebach (1864-1940).

PubMed

Shaw, Lily Bzl; Shaw, Robert A

2016-05-01

Three physicians are discussed. Sigmund Freud, probably the best-known member of the Vienna School of Medicine, was the path-breaking pioneer in psychoanalysis and psychotherapy. Julius Wagner-Jauregg was a psychiatrist who discovered the link between iodine deficiency and goitre and also developed malaria therapy to treat progressive paralysis caused by syphilis for which he was awarded the Nobel Prize. Karel Wenckebach, the pioneering Dutch cardiologist, is best known for the Wenckebach block. After the Anschluss, fate dealt very different hands to these three physicians. Freud fled to London where he soon died. Wagner-Jauregg, who had some pan-Germanic sympathies as well as views on eugenics, left a controversial legacy. The Dutch cardiologist Wenckebach died in Vienna shortly after his homeland had been invaded in 1940 by that of his hosts. © IMechE 2014.

New combinations for Pacific endemic species: Marquesan Poaceae, and Micronesian Myrtaceae

PubMed Central

Tornabene, Michael W.; Wagner, Warren L.

2013-01-01

Abstract As part of the preparation for a comprehensive online flora of Pacific oceanic islands, numerous taxonomic changes have been necessary, primarily due to a new wealth of global molecular phylogenetic studies on genera that include Pacific islands species. In order to compile an accurate checklist of the Pacific island flora with up-to-date taxonomies, we are moving several species to their currently accepted genera. Two Marquesan Pennisetum Rich. are transferred to Cenchrus L. with the new combinations Cenchrus articularis (Trin.) M. Tornabene & W.L. Wagner, and Cenchrus henryanus (F. Br.) M. Tornabene & W.L. Wagner. A key to Marquesas Cenchrus is also provided to differentiate the two species. Additionally, one species of Eugenia L. is transferred to Syzygium Gaertn. with the new combination Syzygium stelechanthoides (Kaneh.) M. Tornabene & W.L. Wagner in accord with the aforementioned studies. PMID:24399889

Energy distribution from vertical impact of a three-dimensional solid body onto the flat free surface of an ideal fluid

NASA Astrophysics Data System (ADS)

Scolan, Y.-M.; Korobkin, A. A.

2003-02-01

Hydrodynamic impact phenomena are three dimensional in nature and naval architects need more advanced tools than a simple strip theory to calculate impact loads at the preliminary design stage. Three-dimensional analytical solutions have been obtained with the help of the so-called inverse Wagner problem as discussed by Scolan and Korobkin in 2001. The approach by Wagner provides a consistent way to evaluate the flow caused by a blunt body entering liquid through its free surface. However, this approach does not account for the spray jets and gives no idea regarding the energy evacuated from the main flow by the jets. Clear insight into the jet formation is required. Wagner provided certain elements of the answer for two-dimensional configurations. On the basis of those results, the energy distribution pattern is analysed for three-dimensional configurations in the present paper.

Julius Wagner-Jauregg and the Legacy of Malarial Therapy for the Treatment of General Paresis of the Insane

PubMed Central

Tsay, Cynthia J.

2013-01-01

Julius Wagner-Jauregg, a preeminent Austrian psychiatrist was awarded the Nobel Prize in Medicine in 1927 for the development of malaria therapy for the treatment of neurosyphilis, or general paresis of the insane. Despite being only one of three psychiatrists to win a Nobel Prize, he has faded from public consciousness and his name recognition pales in comparison to his contemporary and fellow Austrian, Sigmund Freud. This paper explores his contributions to the field of biological psychiatry and also touches upon reasons, such as the growing bioethics movement, his controversial affiliation with the Nazi Party, and the evolution of neurosyphilis, that explain why Wagner-Jauregg is not more widely celebrated for his contributions to the field of psychiatry, even though his malarial treatment could be considered the earliest triumph of biological psychiatry over psychoanalysis. PMID:23766744

The origins of species: the debate between August Weismann and Moritz Wagner.

PubMed

Weissman, Charlotte

2010-01-01

Weismann's ideas on species transmutation were first expressed in his famous debate with Moritz Wagner on the mechanism of speciation. Wagner suggested that the isolation of a colony from its original source is a preliminary and necessary factor for speciation. Weismann accepted a secondary, facilitating role for isolation, but argued that natural and sexual selection are the primary driving forces of species transmutation, and are always necessary and often sufficient causes for its occurrence. The debate with Wagner, which occurred between 1868 and 1872 within the framework of Darwin's discussions of geographical distribution, was Weismann's first public battle over the mechanism of evolution. This paper, which offers the first comprehensive analysis of this debate, extends previous analyses and throws light on the underlying beliefs and motivations of these early evolutionists, focusing mainly on Weismann's views and showing his commitment to what he later called "the all sufficiency of Natural Selection." It led to the crystallization of his ideas on the central and essential role of selection, both natural and sexual, in all processes of evolution, and, already at this early stage in his theoretical thinking, was coupled with sophisticated and nuanced approach to biological organization. The paper also discusses Ernst Mayr's analysis of the debate and highlights aspects of Weismann's views that were overlooked by Mayr and were peripheral to the discussions of other historians of biology.

Analytical Tools for Affordability Analysis

DTIC Science & Technology

2015-04-30

flunk this basic test from their inception. —Honorable Ashton B. Carter (2010), Under Secretary of Defense for Acquisition, Technology, and Logistics... Testing , and Evaluation] funding has been lost to cancelled programs. (Decker & Wagner, 2011) The Army is scarcely unique in this regard. All... econometric model of how schedule affects cost should take advantage of these different cost categories and treat them separately when they are known

76 FR 28461 - Program Year 2011 Allotments and Grants: Workforce Investment Act, Wagner-Peyser Act, and...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-17

..., services for groups with special needs, and for the extra costs of exemplary models for delivering job... for Guam and the Virgin Islands. The remaining funds are distributed to the States with 40 percent...) -0.20 Virgin Islands 1,385,855 1,383,083 (2,772) -0.20 Outlying areas total....... 1,715,074 1,711...

Requirements for implementation of Kuessner and Wagner indicial lift growth functions into the FLEXSTAB computer program system for use in dynamic loads analyses

NASA Technical Reports Server (NTRS)

Miller, R. D.; Rogers, J. T.

1975-01-01

General requirements for dynamic loads analyses are described. The indicial lift growth function unsteady subsonic aerodynamic representation is reviewed, and the FLEXSTAB CPS is evaluated with respect to these general requirements. The effects of residual flexibility techniques on dynamic loads analyses are also evaluated using a simple dynamic model.

Government Contracting Under the Javits-Wagner-O’Day Act

DTIC Science & Technology

1991-12-01

to manufacture its commodities, or provide its services. Likewise, a qualified work center for the severely disabled must employ personnel with... manufacture (CAD/CAM) systems. Additionally, it studies a unique and innovative business arrangement that serves as a model of contract efficiency and...Additional research areas include the types of commodities currently manufactured in the workshops, tha barriers to enlarging the commodity 3 base, the

Technical Evaluation Report on the Flight Mechanics Panel Symposium on the Use of Computers as a Design Tool.

DTIC Science & Technology

1980-03-01

by Professor Dr- gfrie r Hochschule der Bundeswehr Minchen Werner - Heisenberg -Weg 39 8014 Neubiberg, Germany DTI Tl sJUN . This Advisory Report was...Wagner March 1980 10. Author’s/Editor’s Address II. Pages Hochschule der Bundeswehr MUnchen Werner - Heisenberg -Weg 39 21 8014 Neubiberg, Germany 12...SYMPOSIUM ON THE USE OF COMPUTERS AS A DESIGN TOOL by Professor Dr.-Ing. Siegfried N. Wagner Luftfahrttechnik Hochschule der Bundeswehr Mflnchen Werner

Anomalous thermal hysteresis in dielectric permittivity of CaCu3Ti4O12

NASA Astrophysics Data System (ADS)

Wang, C. C.; Zhang, L. W.

2008-03-01

We herein report an anomalous thermal hysteresis in dielectric permittivity in CaCu3Ti4O12. The anomalous behavior was well explained in terms of the low-temperature Maxwell-Wagner relaxation induced by frozen carriers. A multirelaxation mechanism, i.e., the coupling of the dipole relaxation to the frozen carrier-induced and blocked carrier-induced Maxwell-Wagner relaxations in the low-temperature and high-temperature regions, respectively, is proposed to be the origin of the colossal dielectric constant.

Extensive ionic partitioning in interfaces that membranous and biomimetic surfaces form with electrolytes: Antitheses of the gold-electrolyte interface

NASA Astrophysics Data System (ADS)

Chilcott, Terry; Guo, Chuan; Coster, Hans

2013-04-01

Maxwell-Wagner modeling of electrical impedance measurements of tetradecane-electrolyte systems yielded three interfacial layers between the tetradecane layer and the bulk electrolytes of concentration ranging from 1-300 mM KCl whereas the gold-electrolyte system yielded only one layer. The conductivity and thickness for the surface layer were orders of magnitude different from that expected for the Gouy-Chapman layer and did not reflect dependencies of the Debye length on concentration. Conductivity values for the three layers were less than those of the bulk electrolyte but exhibited a dependency on concentration similar to that expected for the bulk. Thickness values for the layers indicate an interface extending ~106 Å into the bulk electrolyte, which contrasts with the gold-electrolyte interface that extended only 20-30 Å into the bulk. Maxwell-Wagner characterizations of both interfaces were consistent with spatial distributions of ionic partitioning arising from the Born energy as determined by the dielectric properties of the substrates and electrolyte. The distributions for the membranous and silicon interfaces were similar but the antitheses of that for the gold interface.

Conceptual Model for the Geothermal System of the Wagner Basin, Gulf of California

NASA Astrophysics Data System (ADS)

Gonzalez-Fernandez, A.; Neumann, F.; Negrete-Aranda, R.; Contreras, J.; Batista-Cruz, R. Y.; Kretzschmar, T.; Avilés-Esquivel, T. A.; Reyes Ortega, V.; Flores-Luna, C. F.; Gomez-Trevino, E.; Martin, A.; Constable, S.

2017-12-01

Cerro Prieto in northwestern Mexico is one of the biggest geothermal plants in the world. Cerro Prieto sits in the Gulf of California rift system, which consists of a series of spreading centers and transform faults. The aim of this study is to evaluate the geothermal potential of the nearby offshore Wagner basin. To this end, we acquired and analyzed a set of different methods, such as reflection seismics, heat flow, magnetotelluric and controlled source electromagnetics, hydrogeochemistry and echosounder. Seismic reflection data show that the Wagner basin is a semi-graben, A profile crossing it shows numerous closely spaced faults, particularly in its eastern part. We found very high heat flow values, in excess of 1000 mW/m2, and large variability on the eastern flank of the Wagner basin, whereas there are more consistent and much lower values across the central and western parts. The high and variable heat flow values are suggestive of advective heat transfer We collected cores and interstitial water samples. The hydrogeochemistry analyses show that in the cores recovered from high heat flow areas, the relations bromide/choride and bromide/sulfide are clearly different from sea water. In contrast, those relations were close to sea water in areas with low heat flow. Similarly, the isotope relations such as 2H/18O show a similar pattern, further indicating the groundwater origin of the interstitial water found in high heat flow zones. In the magnetoteluric measurements we found the presence of a deep conductor that is located approximately under the basin center, extends from the base of the crust to depths of about 40 km, and dips toward the NE. This conductor is probably related to the heat source of the geothermal system. Active source electromagnetics show the presence of shallow conductors that correlate with the faults visible in the seismic sections. There are two distinct conductors, one in the eastern flank and another in the western flank of the basin. The echosounder data and previous studies support the presence of fluid discharge, focused specially in the eastern part of the basin. According to our results, there is recharge in the western part of the basin, a deep heat source beneath the basin, related to the rift process, and groundwater discharge in the eastern part of the basin, channeled by closely spaced faults.

Galen Wagner, M.D., Ph.D. (1939-2016) as international mentor of young investigators in electrocardiology.

PubMed

Swenne, Cees A; Pahlm, Olle; Atwater, Brett D; Bacharova, Ljuba

This paper describes a substantial part of the international mentoring network of students and young investigators in electrocardiology that developed around Dr. Galen Wagner (1939-2016), including many experiences of his mentees and co-mentors. The paper is meant to stimulate thinking about international mentoring as a means to achieve important learning experiences and personal development of young investigators, to intensify international scientific cooperation, and to stimulate scientific production. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

Photosynthetic Responses to the Environment. Proceedings Symposium held August 24 - 27, 1992. Volume 8

DTIC Science & Technology

1992-08-27

seedlings were grown in Wagner pots that were filled with 5 continuously aerated hydroponic solutions of various nitrate concentrations according to Hewitt...seeded Simpson, were grown by hydroponics inside Conviron growth chambers (model E15). The description of the hydroponic system, the growth solutions , and...control. In Briggs WR ed, Photosynthesis, Alan R Liss, New York, pp 183-205 8. Evans JR, Terashlma I (1988) Photosynthetic characteristics of spinach

Screening for Cerebroprotective Agents Using an In Vivo Model of Cerebral Reversible Depolarization in Awake Rats

DTIC Science & Technology

2001-01-01

next millennium. Roach RC, Wagner pathophysiology and therapy . Neurosci Biobehav Res 1987; 11: PD, Hackett PH, eds. New York: Kluwer Academic/Plenum 287...Medical 43. Anonymous. Neuroprotection as initial therapy in acute Publishers, 1989. stroke. Third report of an ad hoc consensus group meeting. The 19...metabolism during electroconvulsive treatment in relaxation. rotoxicity risk assessment. In: Neuroprotective agents, vol. 825. EEG-EMG Zeitschrift fur

Measurement of the Auger parameter and Wagner plot for uranium compounds

DOE Office of Scientific and Technical Information (OSTI.GOV)

Holliday, Kiel S.; Siekhaus, Wigbert; Nelson, Art J.

2013-05-15

In this study, the photoemission from the U 4f{sub 7/2} and 4d{sub 5/2} states and the U N{sub 6}O{sub 45}O{sub 45} and N{sub 67}O{sub 45}V x-ray excited Auger transitions were measured for a range of uranium compounds. The data are presented in Wagner plots and the Auger parameter is calculated to determine the utility of this technique in the analysis of uranium materials. It was demonstrated that the equal core-level shift assumption holds for uranium. It was therefore possible to quantify the relative relaxation energies, and uranium was found to have localized core-hole shielding. The position of compounds within themore » Wagner plot made it possible to infer information on bonding character and local electron density. The relative ionicity of the uranium compounds studied follows the trend UF{sub 4} > UO{sub 3} > U{sub 3}O{sub 8} > U{sub 4}O{sub 9}/U{sub 3}O{sub 7} Almost-Equal-To UO{sub 2} > URu{sub 2}Si{sub 2}.« less

Stall flutter analysis of propfans

NASA Technical Reports Server (NTRS)

Reddy, T. S. R.

1988-01-01

Three semi-empirical aerodynamic stall models are compared with respect to their lift and moment hysteresis loop prediction, limit cycle behavior, easy implementation, and feasibility in developing the parameters required for stall flutter prediction of advanced turbines. For the comparison of aeroelastic response prediction including stall, a typical section model and a plate structural model are considered. The response analysis includes both plunging and pitching motions of the blades. In model A, a correction of the angle of attack is applied when the angle of attack exceeds the static stall angle. In model B, a synthesis procedure is used for angles of attack above static stall angles, and the time history effects are accounted for through the Wagner function.

Facile preparation of nitrogen and sulfur co-doped graphene-based aerogel for simultaneous removal of Cd2+ and organic dyes.

PubMed

Kong, Qiaoping; Wei, Chaohai; Preis, Sergei; Hu, Yun; Wang, Feng

2018-05-17

The need in simultaneous removal of heavy metals and organic compounds dictates the development of synthetic adsorbents with tailor-made properties. A nitrogen (N) and sulfur (S) co-doped graphene-based aerogel (GBA) modified with 2,5-dithiobisurea was synthesized hydrothermally for simultaneous adsorption of Cd 2+ and organic dyes-safranin-O (SO), crystal violet (CV), and methylene blue (MB). 2,5-Dithiobisurea was used as nitrogen and sulfur sources to introduce N and S-containing functional group onto graphene oxide. The adsorption mechanism of GBA towards Cd 2+ and organic dyes was studied by Dumwald-Wagner models and the results showed that surface and intraparticle diffusion was the key factor in controlling the rate of adsorption. The maximum adsorption capacities of GBA towards Cd 2+ , SO, CV, and MB comprised 1.755, 0.949, 0.538, and 0.389 mmol/g in monocomponent system, respectively. Adsorption synergism was observed with respect to Cd 2+ in presence of the dyes. The performance of GBA with respect to Cd 2+ removal from binary solutions, Cd 2+ -SO, Cd 2+ -CV, and Cd 2+ -MB, was enhanced by the presence of the dyes significantly, while the adsorption capacities towards the dyes were not affected by the presence of Cd 2+ .

Implications of high amplitude atmospheric CO2 fluctuations on past millennium climate change

NASA Astrophysics Data System (ADS)

van Hoof, Thomas; Kouwenberg, Lenny; Wagner-Cremer, Friederike; Visscher, Henk

2010-05-01

Stomatal frequency analysis of leaves of land plants preserved in peat and lake deposits can provide a proxy record of pre-industrial atmospheric CO2 concentration complementary to measurements in Antarctic ice cores. Stomatal frequency based CO2 trends from the USA and NW European support the presence of significant CO2 variability during the first half of the last millennium (Kouwenberg et al., 2005; Wagner et al., 2004; van Hoof et al., 2008). The timing of the most significant perturbation in the stomata records (1200 AD) is in agreement with an observed CO2 fluctuation in the D47 Antarctic ice-core record (Barnola et al., 1995; van Hoof et al., 2005). The amplitude of the stomatal frequency based CO2 changes (> 34ppmv) exceeds the maximum amplitude of CO2 variability in the D47 ice core (< 10 ppmv). A modelling experiment taking into account firn-densification based smoothing processes in the D47 ice core proved, however, that the amplitude difference between the stomata record and the D47 ice-core can be explained by natural smoothing processes in the ice (van Hoof et al., 2005). This observation gives credence to the existence of high-amplitude CO2 fluctuations during the last millennium and suggests that high resolution ice core CO2 records should be regarded as a smoothed representation of the atmospheric CO2 signal. In the present study, potential marine and terrestrial sources and sinks associated with the observed atmospheric CO2 perturbation will be discussed. The magnitude of the observed CO2 variability implies that inferred changes in CO2 radiative forcing are of a similar magnitude as variations ascribed to other forcing mechanisms (e.g. solar forcing and volcanism), therefore challenging the IPCC concept of CO2 as an insignificant preindustrial climate forcing factor. References Barnola J.M., M. Anklin, J. Porcheron, D. Raynaud, J. Schwander and B. Stauffer 1995. CO2 evolution during the last millennium as recorded by Antarctic and Greenland ice. Tellus, v 47B, p. 264-272 Kouwenberg L.L.R., F. Wagner, W.M. Kürschner and H. Visscher 2005. Atmospheric CO2 fluctuations during the last Millennium reconstructed by stomatal frequency analysis of Tsuga heterophylla needles. Geology, v. 33, no.1, pp. 33-36 van Hoof T.B., K.A. Kaspers, F. Wagner, R.S.W. van de Wal, W.M. Kürschner and H. Visscher 2005. Atmospheric CO2 during the 13th century AD: reconciliation of data from ice core measurements and stomatal frequency analysis. Tellus B, v. 57, pp. 351-355 van Hoof T.B., F. Wagner-Cremer, W.M. K Kürschner and H. Visscher 2008. A role for atmospheric CO2 in preindustrial climate forcing. Proceedings of the National Academy of Sciences of the USA, v. 105, no. 41, pp. 15815-15818 Wagner F., L.L.R. Kouwenberg, T.B. van Hoof and H. Visscher 2004. Reproducibility of Holocene atmospheric CO2 records based on stomatal frequency. Quartenary Science Reviews. V. 23, pp. 1947-1954

Materials for Adaptive Structural Acoustic Control. Volume 4

DTIC Science & Technology

1993-04-06

Ceramics: Pioeprues- [kvjcecs 1. R.E. Newnham and G. R. Ruschau, "Smart Electrocerarnics." 3A . and Aplication , ed. by L.M. Levinson, Marcel Dekker...TechniQue (Ph. D Thesis , The Pennsylvania State University, University Park, 1990). 8. J.K. Yamamoto and A.S. Bhalla, Mater. Lett., 1-0, 497 (1991). 9...explained flr Ceramic Capacitors". M S Thesi , Penn,,yl’ania State Uni.ersitw. L nie.by the Maxwell-Wagner model and experimental data fitted sily Park. PA

New records and updated checklist of Cicadomorpha (Hemiptera: Auchenorrhyncha) species from Greece.

PubMed

Thanou, Zoi N; Afentoulis, Dimitrios G; Koufopoulou, Panagiota; Ampatzi, Argyro P; Lekkou, Sofia D; Koutsogiannopoulou, Αikaterini; Bravou, Anastasia A; Stamatakou, Georgia D; Voulgaraki, Konstantina N; Piperkas, Anastasios; Chaldaiou, Aikaterini; Kalaitzaki, Argyro P; Tsagkarakis, Antonios E

2018-04-20

Seventeen auchenorrhynchan species of the family Cicadellidae are recorded from Greece for the first time: Euscelidius variegatus (Kirschbaum 1858), Euscelis ohausi (Wagner 1939), Psammotettix notatus (Melichar 1896), Psammotettix striatus (Linnaeus 1758), Psammotettix sabulicola (Curtis 1837), Anzygina honiloa (Kirkaldy 1906), Arboridia versuta (Melichar 1897), Edwardsiana ishidae (Matsumura 1932), Edwardsiana tersa (Edwards 1914), Eupteryx decemnotata (Rey 1891), Eupteryx curtisii (Flor 1861), Eupteryx rostrata (Ribaut 1936), Frutioidia sanguinosa (Rey 1891), Zygina rosea (Flor 1861), Zygina suavis (Rey 1891), Zygina tiliae (Fallen 1806), Anaceratagallia frisia (Wagner 1939). Faunistic and distributional data notes are given for each species and a complete, updated species checklist for Greece is provided.

Theoretical kinetics study of the F((2)P) + NH3 hydrogen abstraction reaction.

PubMed

Espinosa-Garcia, J; Fernandez-Ramos, A; Suleimanov, Y V; Corchado, J C

2014-01-23

The hydrogen abstraction reaction of fluorine with ammonia represents a true chemical challenge because it is very fast, is followed by secondary abstraction reactions, which are also extremely fast, and presents an experimental/theoretical controversy about rate coefficients. Using a previously developed full-dimensional analytical potential energy surface, we found that the F + NH3 → HF + NH2 system is a barrierless reaction with intermediate complexes in the entry and exit channels. In order to understand the reactivity of the title reaction, thermal rate coefficidents were calculated using two approaches: ring polymer molecular dynamics and quasi-classical trajectory calculations, and these were compared with available experimental data for the common temperature range 276-327 K. The theoretical results obtained show behavior practically independent of temperature, reproducing Walther-Wagner's experiment, but in contrast with Persky's more recent experiment. However, quantitatively, our results are 1 order of magnitude larger than those of Walther-Wagner and reasonably agree with the Persky at the lowest temperature, questioning so Walther-Wagner's older data. At present, the reason for this discrepancy is not clear, although we point out some possible reasons in the light of current theoretical calculations.

Extension of Ostwald Ripening Theory

NASA Technical Reports Server (NTRS)

Baird, J.; Naumann, R.

1985-01-01

The objective is to develop models based on the mean field approximation of Ostwald ripening to describe the growth of second phase droplets or crystallites. The models will include time variations in nucleation rate, control of saturation through addition of solute, precipitating agents, changes in temperature, and various surface kinetic effects. Numerical integration schemes have been developed and tested against the asymptotic solution of Liftshitz, Slyozov and Wagner (LSW). A second attractor (in addition to the LSW distribution) has been found and, contrary to the LSW theory, the final distribution is dependent on the initial distribution. A series of microgravity experiments is being planned to test this and other results from this work.

Large enhanced dielectric permittivity in polyaniline passivated core-shell nano magnetic iron oxide by plasma polymerization

DOE Office of Scientific and Technical Information (OSTI.GOV)

Joy, Lija K.; Sooraj, V.; Sethulakshmi, N.

2014-03-24

Commercial samples of Magnetite with size ranging from 25–30 nm were coated with polyaniline by using radio frequency plasma polymerization to achieve a core shell structure of magnetic nanoparticle (core)–Polyaniline (shell). High resolution transmission electron microscopy images confirm the core shell architecture of polyaniline coated iron oxide. The dielectric properties of the material were studied before and after plasma treatment. The polymer coated magnetite particles exhibited a large dielectric permittivity with respect to uncoated samples. The dielectric behavior was modeled using a Maxwell–Wagner capacitor model. A plausible mechanism for the enhancement of dielectric permittivity is proposed.

An open circuit voltage equation enabling separation of cathode and anode polarization resistances of ceria electrolyte based solid oxide fuel cells

NASA Astrophysics Data System (ADS)

Zhang, Yanxiang; Chen, Yu; Yan, Mufu

2017-07-01

The open circuit voltage (OCV) of solid oxide fuel cells is generally overestimated by the Nernst equation and the Wagner equation, due to the polarization losses at electrodes. Considering both the electronic conduction of electrolyte and the electrode polarization losses, we express the OCV as an implicit function of the characteristic oxygen pressure of electrolyte (p* [atm], at which the electronic and ionic conductivities are the same), and the relative polarization resistance of electrodes (rc = Rc/Ri and ra = Ra/Ri, where Ri/c/a [Ωcm2] denotes the ionic resistance of electrolyte, and the polarization resistances of cathode and anode, respectively). This equation approaches to the Wagner equation when the electrodes are highly active (rc and ra → 0), and approaches to the Nernst equation when the electrolyte is a purely ionic conductor (p* → 0). For the fuel cells whose OCV is well below the prediction of the Wagner equation, for example with thin doped ceria electrolyte, it is demonstrated that the combination of OCV and impedance spectroscopy measurements allows the determination of p*, Rc and Ra. This equation can serve as a simple yet powerful tool to study the internal losses in the cell under open circuit condition.

Mineralogical characterization of Greda clays and monitoring of their phase transformations on thermal treatment

NASA Astrophysics Data System (ADS)

Panduro, E. Chavez; Cabrejos, J. Bravo

2010-01-01

The mineralogical characterization of two clay samples from the Central Andean Region of Peru, denominated White Greda and Red Greda, is reported. These clays contain the clay minerals mica and illite respectively. Both clays were treated thermally in an oxidising atmosphere under controlled conditions up to 1,100°C with the purpose of obtaining information about structural changes that may be useful for pottery manufacture. X-ray fluorescence was used for the elemental characterization of the samples and X-ray diffractometry was used to determine the collapse and formation of the mineral phases present in the samples caused by thermal treatment. At temperatures above 1,000°C it is observed the formation of spinel in the case of White Greda and of hematite, corundum and cristobalite in the case of Red Greda. Room temperature transmission Mössbauer spectroscopy allowed the monitoring of the variation of the hyperfine parameters with the thermal treatment temperature; In the case of the evolution of the quadruple splitting of the paramagnetic Fe3 + sites with temperature, in both clays, the analyses reproduced results such as the “camel back” curve shape, found by other workers (Wagner and Wagner, Hyperfine Interact 154:35-82, 2004; Wagner and Kyek, Hyperfine Interact 154:5-33, 2004).

[Problems and complications of leg lengthening with the Wagner apparatus].

PubMed

Herzog, R; Hefti, F

1992-06-01

Since 1971, we have performed 189 leg lengthening procedures using the Wagner method at our institution. The results obtained in the first 26 cases (1971-1973) showed a high complication rate, which led us to reconsider the indications for this procedure. In the present paper, we analyze the results of 37 leg lengthening procedures carried out in 32 patients during the last 10 years (1981-1990) in the children's unit of the orthopedic department of the University of Basle. We found a complication rate of 78%, and in 46% of cases there was more than one major complication. We did not distinguish between "complications" and "problems", because such distinctions are of little importance to the patient. The average age at the time of surgery was 14.8 years, and the average increase in length was 4.3 (2.2-9.2) cm. For each 1 cm of lengthening, an average of 21 days in hospital and 64 days of reduced weight-bearing were needed. Our conclusion is that the Wagner method makes it possible to attain the goal of leg lengthening, but the second step cannot reduce the length of stay in hospital or the length of time the patient needs the help of crutches. Bone remodeling is disturbed. Our preliminary experience with the Ilizarov method is more encouraging.

Experimental and Theoretical Studies on the Nazarov Cyclization/Wagner-Meerwein Rearrangement Sequence

PubMed Central

Lebœuf, David; Ciesielski, Jennifer

2012-01-01

Highly functionalized cyclopentenones can be generated stereospecifically by a chemoselective copper(II)-mediated Nazarov/Wagner-Meerwein rearrangement sequence of divinyl ketones. A detailed investigation of this sequence is described including a study of substrate scope and limitations. After the initial 4π electrocyclization, this reaction proceeds via two different sequential [1,2]-shifts, with selectivity that depends upon either migratory ability or the steric bulkiness of the substituents at C1 and C5. This methodology allows the creation of vicinal stereogenic centers, including adjacent quaternary centers. This sequence can also be achieved by using a catalytic amount of copper(II) in combination with NaBAr4f, a weak Lewis acid. During the study of the scope of the reaction, a partial or complete E / Z isomerization of the enone moiety was observed in some cases prior to the cyclization, which resulted in a mixture of diastereomeric products. Use of a Cu(II)-bisoxazoline complex prevented the isomerization, allowing high diastereoselectivity to be obtained in all substrate types. In addition, the reaction sequence was studied by DFT computations at the UB3LYP/6-31G(d,p) level, which are consistent with the proposed sequences observed, including E / Z isomerizations and chemoselective Wagner-Meerwein shifts. PMID:22471833

Understanding the fate of the oxyallyl cation following Nazarov electrocyclization: sequential Wagner-Meerwein migrations and the synthesis of spirocyclic cyclopentenones

PubMed Central

Huang, Jie; Lebœuf, David; Frontier, Alison J.

2011-01-01

A general reaction sequence is described that involves Nazarov cyclization followed by two sequential Wagner Meerwein migrations, to afford spirocyclic compounds from divinyl ketones in the presence of one equivalent of copper(II) complexes. A detailed investigation of this sequence is described including a study of substrate scope and limitations. It was found that after 4π electrocyclization, two different pathways are available to the oxyallyl cation intermediate: elimination of a proton can give the usual Nazarov cycloadduct, or ring contraction can give an alternative tertiary carbocation. After ring contraction, either [1,2]-hydride or carbon migration can occur, depending upon the substitution pattern of the substrate, to furnish spirocyclic products. The rearrangement pathway is favored over the elimination pathway when catalyst loading was high and the copper(II) counterion is noncoordinating. Several ligands were found to be effective for the reaction. Thus, the reaction sequence can be controlled by judicious choice of reaction conditions to allow selective generation of richly functionalized spirocycles. The three steps of the sequence are stereospecific: electrocyclization followed by two [1,2]-suprafacial Wagner-Meerwein shifts: the ring contraction and then an hydride, alkenyl or aryl shift. The method allows stereospecific installation of adjacent stereocenters or adjacent quaternary centers arrayed around a cyclopentenone ring. PMID:21466152

A new VCAN/versican splice acceptor site mutation in a French Wagner family associated with vascular and inflammatory ocular features

PubMed Central

Brézin, Antoine P.; Nedelec, Brigitte; Barjol, Amandine; Rothschild, Pierre-Raphael; Delpech, Marc

2011-01-01

Purpose To detail the highly variable ocular phenotypes of a French family affected with an autosomal dominantly inherited vitreoretinopathy and to identify the disease gene. Methods Sixteen family members with ten affected individuals underwent detailed ophthalmic evaluation. Genetic linkage analysis and gene screening were undertaken for genes known to be involved in degenerative and exudative vitreoretinopathies. Qualitative reverse transcriptase-PCR analysis of the versiscan (VCAN) transcripts was performed after mutation detection in the VCAN gene. Results The first index patient of this French family was referred to us because of a chronic uveitis since infancy; this uveitis was associated with exudative retinal detachment in the context of a severe uncharacterized familial vitreoretinopathy. Genetic linkage was obtained to the VCAN locus, and we further identified a new pathogenic mutation at the highly conserved splice acceptor site in intron 7 of the VCAN gene (c.4004–2A>T), which produced aberrantly spliced VCAN transcripts. Conclusions Extensive molecular investigation allowed us to classify this familial vitreoretinopathy as Wagner syndrome. This study illustrates the need to confirm clinical diagnosis by molecular genetic testing and adds new ocular phenotypes to the Wagner syndrome, such as vascular and inflammatory features. PMID:21738396

Modeling the viscosity of polydisperse suspensions: Improvements in prediction of limiting behavior

NASA Astrophysics Data System (ADS)

Mwasame, Paul M.; Wagner, Norman J.; Beris, Antony N.

2016-06-01

The present study develops a fully consistent extension of the approach pioneered by Farris ["Prediction of the viscosity of multimodal suspensions from unimodal viscosity data," Trans. Soc. Rheol. 12, 281-301 (1968)] to describe the viscosity of polydisperse suspensions significantly improving upon our previous model [P. M. Mwasame, N. J. Wagner, and A. N. Beris, "Modeling the effects of polydispersity on the viscosity of noncolloidal hard sphere suspensions," J. Rheol. 60, 225-240 (2016)]. The new model captures the Farris limit of large size differences between consecutive particle size classes in a suspension. Moreover, the new model includes a further generalization that enables its application to real, complex suspensions that deviate from ideal non-colloidal suspension behavior. The capability of the new model to predict the viscosity of complex suspensions is illustrated by comparison against experimental data.

Investigation and modeling of Al3(Sc, Zr) precipitation strengthening in the presence of enhanced supersaturation and within Al-Cu binary alloys

NASA Astrophysics Data System (ADS)

Deane, Kyle

Diffuse Al-Sc and Al-Zr alloys have been demonstrated in literature to be relatively coarsening resistant at higher temperatures when compared with commonly used precipitation strengthening alloys (e.g. 2000 series, 6000 series). However, because of a limited strengthening due to the low solubility of scandium and zirconium in aluminum, and owing to the scarcity and therefore sizeable price tag attached to scandium, little research has been done in the way of optimizing these alloys for commercial applications. With this in mind, this dissertation describes research which aims to tackle several important areas of Al-Sc-Zr research that have been yet unresolved. In Chapter 4, rapid solidification was utilized to enhance the achievable supersaturation of the alloy in an effort to increase the achievable precipitate strengthening. In Chapter 5, Additive Friction Stir processing (AFS), a novel method of mechanically combining materials without melting, was employed in an attempt to pass the benefits of supersaturation from melt spun ribbon into a more structurally useful bulk material. In Chapter 6, a Matlab program written to predict precipitate nucleation, growth, and coarsening with a modified Kampmann and Wagner Numerical (KWN) model, was used to predict heat treatment regimens for more efficient strengthening. Those predictions were then tested experimentally to test the validity of the results. And lastly, in Chapter 7, the effect of zirconium on Al-Cu secondary precipitates was studied in an attempt to increase their thermal stability, as much higher phase fractions of Al-Cu precipitates are achievable than Al-Zr precipitates.

Precipitation Modeling in Nitriding in Fe-M Binary System

NASA Astrophysics Data System (ADS)

Tomio, Yusaku; Miyamoto, Goro; Furuhara, Tadashi

2016-10-01

Precipitation of fine alloy nitrides near the specimen surface results in significant surface hardening in nitriding of alloyed steels. In this study, a simulation model of alloy nitride precipitation during nitriding is developed for Fe-M binary system based upon the Kampmann-Wagner numerical model in order to predict variations in the distribution of precipitates with depth. The model can predict the number density, average radius, and volume fraction of alloy nitrides as a function of depth from the surface and nitriding time. By a comparison with the experimental observation in a nitrided Fe-Cr alloy, it was found that the model can predict successfully the observed particle distribution from the surface into depth when appropriate solubility of CrN, interfacial energy between CrN and α, and nitrogen flux at the surface are selected.

Bacterial Profile and Antibiotic Resistance in Patients with Diabetic Foot Ulcer in Guangzhou, Southern China: Focus on the Differences among Different Wagner's Grades, IDSA/IWGDF Grades, and Ulcer Types

PubMed Central

Xie, Xiaoying; Bao, Yunwen; Ni, Lijia; Liu, Dan; Niu, Shaona; Lin, Haixiong; Li, Hongyu; Duan, Chaohui; Yan, Li; Luo, Zhaofan

2017-01-01

Objective To understand the bacterial profile and antibiotic resistance patterns in diabetic foot infection (DFI) in different Wagner's grades, IDSA/IWGDF grades, and different ulcer types in Guangzhou, in order to provide more detailed suggestion to the clinician about the empirical antibiotic choice. Methods 207 bacteria were collected from 117 DFIs in Sun Yat-sen Memorial Hospital from Jan.1, 2010, to Dec.31, 2015. The clinical data and microbial information were analyzed. Results The proportion of Gram-negative bacteria (GNB) was higher than Gram-positive bacteria (GPB) (54.1% versus 45.9%), in which Enterobacteriaceae (73.2%) and Staphylococcus (65.2%) were predominant, respectively. With an increasing of Wagner's grades and IDSA/IWGDF grades, the proportion of GNB bacterial infection, especially Pseudomonas, was increased. Neuro-ischemic ulcer (N-IFU) was more susceptible to GNB infection. Furthermore, with the aggravation of the wound and infection, the antibiotic resistance rates were obviously increased. GPB isolated in ischemic foot ulcer (IFU) showed more resistance than the N-IFU, while GNB isolates were on the opposite. Conclusions Different bacterial profiles and antibiotic sensitivity were found in different DFU grades and types. Clinician should try to stay updated in antibiotic resistance pattern of common pathogens in their area. This paper provided them the detailed information in this region. PMID:29075293

Nutritional status deteriorates as the severity of diabetic foot ulcers increases and independently associates with prognosis.

PubMed

Zhang, Shan-Shan; Tang, Zheng-Yi; Fang, Ping; Qian, Hong-Jie; Xu, Lei; Ning, Guang

2013-01-01

The prognosis for diabetic foot ulcers (DFUs) remains poor. Nutritional status has not been identified as one of the factors affecting the outcome of DFUs. Therefore, indicators correlated with nutritional status and outcome were analyzed to investigate their relationship. A total of 192 hospitalized patients with Wagner grade 1-5 ulcers and 60 patients with Wagner grade 0 ulcers (all had type 2 diabetes) were assessed by the following: subjective global assessment (SGA), anthropometric measurements, biochemical indicators and physical examinations to evaluate nutritional status, severity of infection and complications. Patient outcome was recorded as healing of the ulcer and the patients were followed up for 6 months or until the wound was healed. The percentage of malnutrition was 62.0% in the DFU patients. The SGA was closely correlated with infection (r=0.64), outcome (r=0.37) and BMI (r=-0.36), all P<0.001. The risk of poor outcome increased with malnutrition [odds ratio (OR), 10.6, P<0.001]. The nutritional status of the DFU patients was independently correlated with the severity of infection and outcome (both P<0.001) and Wagner grades and nutritional status (SGA) were independent risk factors for patient outcome (both P<0.001). Nutritional status deteriorated as the severity of the DFU increased, and malnutrition was a predictor of poor prognosis.

[The impartiality of ignorance? - A controversy between Paul Julius Möbius and Julius Wagner-Jauregg on the symptoms of reanimated persons after a suicide attempt through self-hanging].

PubMed

Engmann, B; Steinberg, H

2014-05-01

Between 1891 and 1893 the famous Austrian and German neuropsychiatrists Julius Wagner-Jauregg and Paul Julius Möbius disputed in leading German and Austrian medical journals about mental and physiological changes and symptoms in people who after strangulation could be revived in time to survive. Their dispute even touched personal issues. For the study, the original sources were studied and contrasted with relevant secondary sources. The dispute was mainly about two opposing concepts: On the one hand, Wagner-Jauregg supported an organic, neurological concept; on the other hand a psychoreactive-symptoms concept represented by Möbius and elaborated by him first in his concept of hysteria. The study elaborates these factual differences in completely different approaches to psychiatry and - at least in the case of Möbius - how a medical theory was embedded into a pre-existing philosophical system. The dispute studied discusses a philosophical problem which has remained incompletely understood until the present day - the relationship of body and mind. Hence the study on this dispute is more than just an interesting aspect in the history of sciences, but rather the illustration of a meeting of two opponents in a still relevant discussion. © Georg Thieme Verlag KG Stuttgart · New York.

Disruption of the Right Temporoparietal Junction Impairs Probabilistic Belief Updating.

PubMed

Mengotti, Paola; Dombert, Pascasie L; Fink, Gereon R; Vossel, Simone

2017-05-31

Generating and updating probabilistic models of the environment is a fundamental modus operandi of the human brain. Although crucial for various cognitive functions, the neural mechanisms of these inference processes remain to be elucidated. Here, we show the causal involvement of the right temporoparietal junction (rTPJ) in updating probabilistic beliefs and we provide new insights into the chronometry of the process by combining online transcranial magnetic stimulation (TMS) with computational modeling of behavioral responses. Female and male participants performed a modified location-cueing paradigm, where false information about the percentage of cue validity (%CV) was provided in half of the experimental blocks to prompt updating of prior expectations. Online double-pulse TMS over rTPJ 300 ms (but not 50 ms) after target appearance selectively decreased participants' updating of false prior beliefs concerning %CV, reflected in a decreased learning rate of a Rescorla-Wagner model. Online TMS over rTPJ also impacted on participants' explicit beliefs, causing them to overestimate %CV. These results confirm the involvement of rTPJ in updating of probabilistic beliefs, thereby advancing our understanding of this area's function during cognitive processing. SIGNIFICANCE STATEMENT Contemporary views propose that the brain maintains probabilistic models of the world to minimize surprise about sensory inputs. Here, we provide evidence that the right temporoparietal junction (rTPJ) is causally involved in this process. Because neuroimaging has suggested that rTPJ is implicated in divergent cognitive domains, the demonstration of an involvement in updating internal models provides a novel unifying explanation for these findings. We used computational modeling to characterize how participants change their beliefs after new observations. By interfering with rTPJ activity through online transcranial magnetic stimulation, we showed that participants were less able to update prior beliefs with TMS delivered at 300 ms after target onset. Copyright © 2017 the authors 0270-6474/17/375419-10$15.00/0.

Review series: Examples of chronic care model: the home-based chronic care model: redesigning home health for high quality care delivery.

PubMed

Suter, Paula; Hennessey, Beth; Florez, Donna; Newton Suter, W

2011-01-01

Individuals with chronic obstructive pulmonary disease (COPD) face significant challenges due to frequent distressing dyspnea and deficits related to activities of daily living. Individuals with COPD are often hospitalized frequently for disease exacerbations, negatively impacting quality of life and healthcare expenditure burden. The home-based chronic care model (HBCCM) was designed to address the needs of patients with chronic diseases. This model facilitates the re-design of chronic care delivery within the home health sector by ensuring patient-centered evidence-based care. This HBCCM foundation is Dr. Edward Wagner s chronic care model and has four additional areas of focus: high touch delivery, theory-based self management, specialist oversight and the use of technology. This article will describe this model in detail and outline how model use for patients with COPD can bring value to stakeholders across the health care continuum.

Creative Inspiration in Composers

ERIC Educational Resources Information Center

Gowan, John Curtis

1977-01-01

Discussed are sources of creative inspiration noted by composers such as Wagner, Strauss, and Puccini; and charted are discrete steps in creativity common to composers seen as producing works of genius. (IM)

Maxwell-Wagner effect in hexagonal BaTiO3 single crystals grown by containerless processing

NASA Astrophysics Data System (ADS)

Yu, Jianding; Paradis, Paul-François; Ishikawa, Takehiko; Yoda, Shinichi

2004-10-01

Oxygen-deficient hexagonal BaTiO3 single crystals, with dielectric constant ε '˜105 and loss component tan δ ˜0.13 at room temperature and a linear temperature dependence of ε' in the range 70-100K, was analyzed by impedance spectroscopy analysis. Two capacitors, bulk and interfacial boundary layer, were observed, and the colossal dielectric constant was mainly dominated by the interfacial boundary layers due to Maxwell-Wagner effect. After annealing the oxygen-deficient hexagonal BaTiO3 at 663K, the ε ' and tanδ became, respectively, 2×104 and 0.07 at room temperature. This work showed an important technological implication as annealing at lower temperatures would help to obtain materials with tailored dielectric properties.

Giant dielectric constant dominated by Maxwell-Wagner relaxation in Al{sub 2}O{sub 3}/TiO{sub 2} nanolaminates synthesized by atomic layer deposition.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Li, W.; Auciello, O.; Premnath, R. N.

2010-01-01

Nanolaminates consisting of Al{sub 2}O{sub 3} and TiO{sub 2} oxide sublayers were synthesized by using atomic layer deposition to produce individual layers with atomic scale thickness control. The sublayer thicknesses were kept constant for each multilayer structure, and were changed from 50 to 0.2 nm for a series of different samples. Giant dielectric constant ({approx}1000) was observed when the sublayer thickness is less than 0.5 nm, which is significantly larger than that of Al{sub 2}O{sub 3} and TiO{sub 2} dielectrics. Detailed investigation revealed that the observed giant dielectric constant is originated from the Maxwell-Wagner type dielectric relaxation.

Mermin-Wagner physics, (H ,T ) phase diagram, and candidate quantum spin-liquid phase in the spin-1/2 triangular-lattice antiferromagnet Ba8CoNb6O24

NASA Astrophysics Data System (ADS)

Cui, Y.; Dai, J.; Zhou, P.; Wang, P. S.; Li, T. R.; Song, W. H.; Wang, J. C.; Ma, L.; Zhang, Z.; Li, S. Y.; Luke, G. M.; Normand, B.; Xiang, T.; Yu, W.

2018-04-01

Ba8CoNb6O24 presents a system whose Co2 + ions have an effective spin 1/2 and construct a regular triangular-lattice antiferromagnet (TLAFM) with a very large interlayer spacing, ensuring purely two-dimensional character. We exploit this ideal realization to perform a detailed experimental analysis of the S =1 /2 TLAFM, which is one of the keystone models in frustrated quantum magnetism. We find strong low-energy spin fluctuations and no magnetic ordering, but a diverging correlation length down to 0.1 K, indicating a Mermin-Wagner trend toward zero-temperature order. Below 0.1 K, however, our low-field measurements show an unexpected magnetically disordered state, which is a candidate quantum spin liquid. We establish the (H ,T ) phase diagram, mapping in detail the quantum fluctuation corrections to the available theoretical analysis. These include a strong upshift in field of the maximum ordering temperature, qualitative changes to both low- and high-field phase boundaries, and an ordered regime apparently dominated by the collinear "up-up-down" state. Ba8CoNb6O24 , therefore, offers fresh input for the development of theoretical approaches to the field-induced quantum phase transitions of the S =1 /2 Heisenberg TLAFM.

20 CFR 627.904 - Transition and implementation.

Code of Federal Regulations, 2012 CFR

2012-04-01

... applicable rules and regulations; the Wagner-Peyser Act, as amended, and the applicable rules and regulations... delivery areas. (m) Program implementation. The implementation by the States and SDA's of certain new...

20 CFR 627.904 - Transition and implementation.

Code of Federal Regulations, 2011 CFR

2011-04-01

... applicable rules and regulations; the Wagner-Peyser Act, as amended, and the applicable rules and regulations... delivery areas. (m) Program implementation. The implementation by the States and SDA's of certain new...

Genetics Home Reference: Wagner syndrome

MedlinePlus

... which the part of the retina responsible for sharp central vision is out of place. Additionally, the ... Brouwer AP, van Nouhuys CE, Boon CJ, Perveen R, Zegers HA, Wittebol-Post D, van den Biesen ...

Mike Wagner | NREL

Science.gov Websites

NREL, Mike worked as a graduate research assistant at University of Wisconsin-Madison Solar Energy Lab Engineering, University of Wisconsin at Madison B.S. Mechanical Engineering, University of Wisconsin at Madison

78 FR 28205 - Notice of Second Prehearing Conference

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-14

....m. Eastern. ADDRESSES: Members of the public are welcome to attend the prehearing conference to be..., LLP, Counsel for BABY MATTERS LLC; and, Larry W. Bennett, Esq. and Geoffrey S. Wagner, Esq., of...

76 FR 80345 - Procurement List; Additions

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-23

... the current or most recent contractors, the Committee has determined that the services listed below...-Wagner-O'Day Act (41 U.S.C. chapter 85) in connection with the services proposed for addition to the...

Maxwell-Wagner relaxation in electrical imaging.

PubMed

Korjenevsky, A V

2005-04-01

The electric field tomography (EFT) method exploits interaction of high-frequency electric field with an inhomogeneous conductive medium without contact with the electrodes. The interaction is accompanied by a high-frequency redistribution of free charges inside the medium and leads to small and regular phase shifts of the field in the area surrounding an object. Such a kind of phenomenon is referred to as the Maxwell-Wagner relaxation. Measuring the perturbations of the field using the set of electrodes placed around the object enables us to reconstruct the internal structure of the medium, generally the spatial distribution of a nonlinear combination of permittivity and resistivity. In the case of biomedical applications the result of measurements is determined mainly by the resistivity of the tissues. Three-dimensional simulation based on the finite element method has demonstrated the feasibility of the technique.

Giant dielectric constant in titania nanoparticles embedded in conducting polymer matrix.

PubMed

Dey, Ashis; De, Sukanta; De, Amitabha; De, S K

2006-05-01

Complex impedance and dielectric permittivity of titania-polypyrrole nanocomposites have been investigated as a function of frequency and temperature at different compositions. A very large dielectric constant of about 13,000 at room temperature has been observed. The colossal dielectric constant is mainly dominated by interfacial polarization due to Maxwell-Wagner relaxation effect. Two completely separate groups of dielectric relaxation have been observed. The low frequency dielectric relaxation arises from surface defect states of titania nanoparticles. The broad peak at high frequency region is attributed to Maxwell-Wagner type polarization originating from the inhomogeneous property of nanocomposite. An abrupt change in grain boundary conductivity and dielectric relaxation associated with titania was observed at around 150 K. Anomalous behavior in conductivity and dielectric relaxation is qualitatively explained by band tail structure of titania nanoparticle.

Olfactory response of predatory Macrolophus caliginosus Wagner (Heteroptera: Miridae) to the odours host plant infested by Bemisia tabaci

NASA Astrophysics Data System (ADS)

Saad, Khalid A.; Roff, M. N. Mohamad; Salam, Mansour; Hanifah Mohd, Y.; Idris, A. B.

2014-09-01

Plant infested with herbivores, release volatile that can be used by natural enemies to locate their herbivorous prey. Laboratory studies were carried out to determine the olfactory responses of predator Macrolophus caliginosus Wagner (Heteroptera: Miridae), to chili plant infected with eggs, nymphs of Bemisia tabaci, using Y-tube olfactometer. The results shown that predator, M. caliginosus has ability to discriminate between non-infested and infested plant by B. tabaci. Moreover, the predator preferred plants with nymphs over plants with eggs. This suggested that M. caliginous uses whitefly-induced volatile as reliable indicators to distinguish between infested chili plants by nymphs, eggs and non-infested plants. These results enhance our understanding of the olfactory cues that guide foraging by M. caliginosus to plant with and without Bemisia tabaci.

Testing for periodicity of extinction

NASA Technical Reports Server (NTRS)

Raup, David M.; Sepkoski, J. J., Jr.

1988-01-01

The statistical techniques used by Raup and Sepkoski (1984 and 1986) to identify a 26-Myr periodicity in the biological extinction record for the past 250 Myr are reexamined, responding in detail to the criticisms of Stigler and Wagner (1987). It is argued that evaluation of a much larger set of extinction data using a time scale with 51 sampling intervals supports the finding of periodicity. In a reply by Sigler and Wagner, the preference for a 26-Myr period is attributed to a numerical quirk in the Harland et al. (1982) time scale, in which the subinterval boundaries are not linear interpolations between the stage boundaries but have 25-Myr periodicity. It is stressed that the results of the stringent statistical tests imposed do not disprove periodicity but rather indicate that the evidence and analyses presented so far are inadequate.

Map projections for global and continental data sets and an analysis of pixel distortion caused by reprojection

USGS Publications Warehouse

Steinwand, Daniel R.; Hutchinson, John A.; Snyder, J.P.

1995-01-01

In global change studies the effects of map projection properties on data quality are apparent, and the choice of projection is significant. To aid compilers of global and continental data sets, six equal-area projections were chosen: the interrupted Goode Homolosine, the interrupted Mollweide, the Wagner IV, and the Wagner VII for global maps; the Lambert Azimuthal Equal-Area for hemisphere maps; and the Oblated Equal-Area and the Lambert Azimuthal Equal-Area for continental maps. Distortions in small-scale maps caused by reprojection, and the additional distortions incurred when reprojecting raster images, were quantified and graphically depicted. For raster images, the errors caused by the usual resampling methods (pixel brightness level interpolation) were responsible for much of the additional error where the local resolution and scale change were the greatest.

Comment on ``Oxidation of alloys containing aluminum and diffusion in Al2O3'' [J. Appl. Phys. 95, 3217 (2004)

NASA Astrophysics Data System (ADS)

Åkermark, Torbjörn

2005-06-01

The introduction of AlO as the diffusing species can be seen as an attempt to bridge the gap between the two scientific communities: those working on the oxidation of metals and those working on the oxidation of silicon. The attempt is, however, not successful and would have been more successful if the Wagner theory [O. Wagner, Z. Phys. Chem. Abt. B 21, 25 (1993)] would have been used to evaluate the mechanisms. There is also a lack of agreement with the two-stage oxidation experiment, oxidation first in O16 and then in O18. The experimental O18 profile in the oxides formed cannot be explained by the diffusion of AlO, so it is unlikely that AlO is the diffusing species during oxidation.

The wish for annihilation in 'love-death' as collapse of the need for recognition, in Wagner's Tristan und Isolde.

PubMed

Bergstein, Moshe

2013-08-01

Wagner's Tristan und Isolde holds a central position in Western music and culture. It is shown to demonstrate consequences of interruption of developmental processes involving the need for recognition of subjectivity, resulting in the collapse of this need into the wish for annihilation of self and other through 'love-death' [Liebestod]. A close reading of the musical language of the opera reveals how this interruption is demonstrated, and the consequent location of identity outside of language, particularly suitable for expression in music. Isolde's dynamics are presented as distinct from that of Tristan, and in contrast to other interpretations of Tristan and Isolde's love as an attack on the Oedipal order, or as a regressive wish for pre-Oedipal union. Isolde's Act I narrative locates the origin of her desire in the protagonists' mutual gaze at a traumatic moment. In this moment powerful and contrasting emotions converge, evoking thwarted developmental needs, and arousing the fantasy of redemption in love-death. By removing the magical elements, Wagner enables a deeper understanding of the characters' positions in relation to each other, each with his or her own needs for recognition and traumatic experiences. These positions invite mutual identifications resulting in rising tension between affirmation of identity and annihilation, with actual death as the only possible psychic solution. The dynamics described in the opera demonstrate the function of music and opera in conveying meaning which is not verbally expressible. Copyright © 2013 Institute of Psychoanalysis.

75 FR 13653 - Qualification of Drivers; Exemption Applications; Vision

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-22

... D. Bennett, Johnny W. Bradford Sr., Levi A. Brown, Charlie F. Cook, Clifford H. Dovel, Arthur L..., Steven L. Valley, Thomas E. Voyles, Jr., Darel G. Wagner, Bernard J. Wood. These exemptions are extended...

77 FR 55195 - Procurement List; Additions

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-07

... nonprofit agencies to provide the services and impact of the additions on the current or most recent... would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection with...

20 CFR 1001.100 - Purpose and scope of subpart.

Code of Federal Regulations, 2010 CFR

2010-04-01

... system established pursuant to the Wagner-Peyser Act, as amended. (b) This subpart describes the roles... performance standards for determining compliance of State agencies in carrying out the provisions of 38 U.S.C...

The Simulation of Precipitation Evolutions and Mechanical Properties in Friction Stir Welding with Post-Weld Heat Treatments

NASA Astrophysics Data System (ADS)

Zhang, Z.; Wan, Z. Y.; Lindgren, L.-E.; Tan, Z. J.; Zhou, X.

2017-12-01

A finite element model of friction stir welding capable of re-meshing is used to simulate the temperature variations. Re-meshing of the finite element model is used to maintain a fine mesh resolving the gradients of the solution. The Kampmann-Wagner numerical model for precipitation is then used to study the relation between friction stir welds with post-weld heat treatment (PWHT) and the changes in mechanical properties. Results indicate that the PWHT holding time and PWHT holding temperature need to be optimally designed to obtain FSW with better mechanical properties. Higher precipitate number with lower precipitate sizes gives higher strength in the stirring zone after PWHT. The coarsening of precipitates in HAZ are the main reason to hinder the improvement of mechanical property when PWHT is used.

Influence of Ag substitution on structural and dielectric properties of TiO2 nanoparticles

NASA Astrophysics Data System (ADS)

Ali, T.; Ahmed, Ateeq; Siddique, M. Naseem; Aftab, Tabish; Tripathi, P.

2018-04-01

In this paper, we report the structural, electrical and dielectric properties of Ag-substituted TiO2 nanoparticles synthesized by sol-gel method. The X-ray diffraction (XRD) spectra revealed that the synthesized nanoparticles are pure and crystalline in nature and showing tetragonal anatase phase of TiO2. TEM micrograph shows that shapes of the nanoparticles are non-spherical. We have also studied the dielectric properties and in relation to it the dielectric constants, dielectric loss and A.C. conductivity have been studied as the function of frequency and composition of iron. The above theory may be explained by `Maxwell Wagner Model'.

75 FR 16757 - Procurement List; Proposed Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-02

... objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in connection with the services proposed for... Standiford Field, Airway Facilities Sector Field Office, Louisville, KY. NPA: C.G.M. Services, Inc...

20 CFR 661.205 - What is the role of the State Board?

Code of Federal Regulations, 2010 CFR

2010-04-01

... performance measures, including State adjusted levels of performance, to assess the effectiveness of the... employment statistics system described in section 15(e) of the Wagner-Peyser Act; and (i) Development of an...

Genetics Home Reference: pyridoxal 5'-phosphate-dependent epilepsy

MedlinePlus

... J, Müller A, Heep A, Bartmann P, Franz AR. Pyridoxal phosphate-dependent neonatal epileptic encephalopathy. Arch Dis ... Windfuhr M, Wagner N, Strehl H, Bagci S, Franz AR, Mills PB, Clayton PT, Baumgartner MR, Steinmann B, ...

Special Feature: Teaching about High Tech.

ERIC Educational Resources Information Center

Kopf, Michael; And Others

1992-01-01

Includes four articles: "Virtual Reality" (Kopf), description of its uses in computer-assisted design, architecture, and technical training; "SME (Society of Manufacturing Engineers) Robotics Contest Opens Doors to Future" (Wagner); "Superconductivity" (Canady), description of classroom demonstrations and experiments;…

Towards a history of operatic psychoanalysis.

PubMed

Carpenter, Alexander

2010-01-01

This paper examines the history of the trope of psychoanalytic therapy in musical dramas, from Richard Wagner to Kurt Weill, concluding that psychoanalysis and the musical drama are, in some ways, companions and take cues from each other, beginning in the mid-19th century. In Wagner's music dramas, psychoanalytic themes and situations - specifically concerning the meaning and analysis of dreams - are presaged. In early modernist music dramas by Richard Strauss and Arnold Schoenberg (contemporaries of Freud), tacit representations of the drama of hysteria, its aetiology and "treatment" comprise key elements of the plot and resonate with dissonant musical soundscapes. By the middle of the 20th century, Kurt Weill places the relationship between analyst and patient in the foreground of his musical "Lady in the Dark," thereby making manifest what is latent in a century-spanning chain of musical works whose meaning centres, in part, around representations of psychoanalysis.

Large dielectric constant in zirconia polypyrrole hybrid nanocomposites.

PubMed

Dey, Ashis; De, S K

2007-06-01

Zirconia nanoparticles have been synthesized by a novel two-reverse emulsion technique and combined with polypyrrole (PPY) to form ZrO2-PPY nanocomposites. Complex impedance and dielectric permittivity of ZrO2-PPY nanocomposite have been investigated as a function of frequency and temperature for different compositions. The composite samples are characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy. The composites reveal ordered semiconducting behaviour. Polypyrrole is the major component in electrical transport process of the samples. A very large dielectric constant of about 12,000 at room temperature has been observed. The colossal dielectric constant is mainly dominated by interfacial polarization due to Maxwell-Wagner relaxation effect. Two completely separate groups of dielectric relaxation have been observed. The low frequency dielectric relaxation arises from surface defect states of zirconia nanoparticles. The broad peak at high frequency is due to Maxwell-Wagner type polarization.

Finding order in complexity: themes from the career of Dr. Robert F. Wagner

NASA Astrophysics Data System (ADS)

Myers, Kyle J.

2009-02-01

Over the course of his long and productive career, Dr. Robert F. Wagner built a framework for the evaluation of imaging systems based on a task-based, decision theoretic approach. His most recent contributions involved the consideration of the random effects associated with multiple readers of medical images and the logical extension of this work to the problem of the evaluation of multiple competing classifiers in statistical pattern recognition. This contemporary work expanded on familiar themes from Bob's many SPIE presentations in earlier years. It was driven by the need for practical solutions to current problems facing FDA'S Center for Devices and Radiological Health and the medical imaging community regarding the assessment of new computer-aided diagnosis tools and Bob's unique ability to unify concepts across a range of disciplines as he gave order to increasingly complex problems in our field.

Topical propolis improves wound healing in patients with diabetic foot ulcer: a randomized controlled trial.

PubMed

Afkhamizadeh, Mozhgan; Aboutorabi, Robab; Ravari, Hassan; Fathi Najafi, Mohsen; Ataei Azimi, Sajad; Javadian Langaroodi, Adineh; Yaghoubi, Mohammad Ali; Sahebkar, Amirhossein

2017-08-22

In this randomized controlled trial, diabetic patients with foot ulcers (Wagner grades 1 and 2) were randomly assigned to conventional therapies for diabetic foot ulcer plus topical propolis ointment (5%; twice daily) or conventional therapies alone. The process of ulcer healing was observed during 4 weeks and compared between the two groups regarding the size, erythema, exudates, white blood cell (WBC) count and erythrocyte sedimentation rate (ESR). The process of ulcer size reduction during the four-week period of study was significantly different between the groups. However, this difference was not significant between the third and fourth weeks. There was no significant difference between two groups regarding erythema and exudate reduction as well as WBC count and ESR. Administration of topical propolis ointment in addition to the conventional treatments of diabetic foot ulcer could reduce the size of ulcers with Wagner grades 1 and 2.

Observer efficiency in discrimination tasks simulating malignant and benign breast lesions imaged with ultrasound

PubMed Central

Abbey, Craig K.; Zemp, Roger J.; Liu, Jie; Lindfors, Karen K.; Insana, Michael F.

2009-01-01

We investigate and extend the ideal observer methodology developed by Smith and Wagner to detection and discrimination tasks related to breast sonography. We provide a numerical approach for evaluating the ideal observer acting on radio-frequency (RF) frame data, which involves inversion of large nonstationary covariance matrices, and we describe a power-series approach to computing this inverse. Considering a truncated power series suggests that the RF data be Wiener-filtered before forming the final envelope image. We have compared human performance for Wiener-filtered and conventional B-mode envelope images using psychophysical studies for 5 tasks related to breast cancer classification. We find significant improvements in visual detection and discrimination efficiency in four of these five tasks. We also use the Smith-Wagner approach to distinguish between human and processing inefficiencies, and find that generally the principle limitation comes from the information lost in computing the final envelope image. PMID:16468454

On the rate of convergence of the alternating projection method in finite dimensional spaces

NASA Astrophysics Data System (ADS)

Galántai, A.

2005-10-01

Using the results of Smith, Solmon, and Wagner [K. Smith, D. Solomon, S. Wagner, Practical and mathematical aspects of the problem of reconstructing objects from radiographs, Bull. Amer. Math. Soc. 83 (1977) 1227-1270] and Nelson and Neumann [S. Nelson, M. Neumann, Generalizations of the projection method with application to SOR theory for Hermitian positive semidefinite linear systems, Numer. Math. 51 (1987) 123-141] we derive new estimates for the speed of the alternating projection method and its relaxed version in . These estimates can be computed in at most O(m3) arithmetic operations unlike the estimates in papers mentioned above that require spectral information. The new and old estimates are equivalent in many practical cases. In cases when the new estimates are weaker, the numerical testing indicates that they approximate the original bounds in papers mentioned above quite well.

Influence of prosthesis design and implantation technique on implant stresses after cementless revision THR

PubMed Central

2011-01-01

Background Femoral offset influences the forces at the hip and the implant stresses after revision THR. For extended bone defects, these forces may cause considerable bending moments within the implant, possibly leading to implant failure. This study investigates the influences of femoral anteversion and offset on stresses in the Wagner SL revision stem implant under varying extents of bone defect conditions. Methods Wagner SL revision stems with standard (34 mm) and increased offset (44 mm) were virtually implanted in a model femur with bone defects of variable extent (Paprosky I to IIIb). Variations in surgical technique were simulated by implanting the stems each at 4° or 14° of anteversion. Muscle and joint contact forces were applied to the reconstruction and implant stresses were determined using finite element analyses. Results Whilst increasing the implant's offset by 10 mm led to increased implant stresses (16.7% in peak tensile stresses), altering anteversion played a lesser role (5%). Generally, larger stresses were observed with reduced bone support: implant stresses increased by as much as 59% for a type IIIb defect. With increased offset, the maximum tensile stress was 225 MPa. Conclusion Although increased stresses were observed within the stem with larger offset and increased anteversion, these findings indicate that restoration of offset, key to restoring joint function, is unlikely to result in excessive implant stresses under routine activities if appropriate fixation can be achieved. PMID:21569522

Influence of CoO Nanoparticles on Properties of Barium Zirconium Titanate Ceramics

NASA Astrophysics Data System (ADS)

Jarupoom, Parkpoom; Jaita, Pharatree; Boothrawong, Narongdetch; Phatungthane, Thanatep; Sanjoom, Ratabongkot; Rujijanagul, Gobwute; Cann, David P.

2017-07-01

Composites of Ba(Zr0.07Ti0.93)O3 ceramic and CoO nanoparticles (at 1.0 vol.% to 3.0 vol.%) have been fabricated to investigate the effects of the CoO nanoparticles on the properties of the composites. X-ray diffraction data revealed that the modified samples contained Ba(Zr0.07Ti0.93)O3 and CoO phases. Addition of CoO nanoparticles improved the magnetic behavior and resulted in slight changes in ferroelectric properties. The composites showed a magnetoelectric effect in which the negative value of the magnetocapacitance increased with increasing CoO concentration. Examination of the dielectric spectra showed that the two phase-transition temperatures as observed for unmodified Ba(Zr0.07Ti0.93)O3 merged into a single phase-transition temperature for the composite samples. The composite samples also showed broad relative permittivity versus temperature ( ɛ r - T) curves with frequency dispersion. This dielectric behavior can be explained in terms of the Maxwell-Wagner mechanism. In addition, the Vickers hardness ( H v) value of the samples increased with increasing CoO content.

Change in the Magnetocapacity in the Paramagnetic Region in a Cation-Substituted Manganese Selenide

NASA Astrophysics Data System (ADS)

Aplesnin, S. S.; Sitnikov, M. N.; Zhivul'ko, A. M.

2018-04-01

The capacity and the dielectric loss tangent of a Gd x Mn1- x Se ( x ≤ 0.2) solid solution have been measured in the frequency range 1-300 kHz without a magnetic field and in a magnetic field of 8 kOe in the temperature range 100-450 K, and the magnetic moment of the solid solution has been measured in a field of 8.6 kOe. The magnetocapacity effect and the change in the magnetocapacity sign have been observed in room temperature in the paramagnetic region. A correlation of the changes in the dielectric permittivity and the magnetic susceptibility with temperature has been revealed. The magnetocapacity is described using the model with orbital electron ordering and the Maxwell-Wagner model.

Special Feature: Automotive Technology.

ERIC Educational Resources Information Center

Wagner, Margaret; And Others

1993-01-01

Includes "National Trouble Shooting Contest--Training Technicians, Not Mechanics" (Wagner); "Front Wheel Drive on a Small Scale" (Waggoner); "Air Bags in Hit and Run on Rack and Pinion Technicians" (Collard); and "Future Technology--A Blind Spot Detector for Highway Driving" (Zoghi, Bellubi). (JOW)

Clinico-microbiological Profile of Septic Diabetic Foot with Special Reference to Anaerobic Infection.

PubMed

Sasikumar, K; Vijayakumar, Chellappa; Jagdish, Sadasivan; Kadambari, Dharanipragada; Raj Kumar, Nagarajan; Biswas, Rakhi; Parija, Subhash Chandra

2018-03-01

Introduction Diabetic foot infections are a major cause of non-traumatic amputations. The role of anaerobes in the prognosis of these infections is particularly unclear. This study was conducted with the aim of correlating microbiological profiles with clinical outcomes in these diabetic foot ulcer patients. Methodology This prospective observational study was done in a tertiary care centre in South India. All patients admitted with diabetic foot ulcers for two years were included in the study. Tissue biopsies were collected from the ulcer for aerobic and anaerobic cultures. The patients were grouped as those with aerobic infection alone (anaerobe negative) and those with mixed aerobic and anaerobic infections (anaerobe positive). Anaerobic culture was performed using the Robertson cooked meat (RCM) medium. The ulcer of the foot was described with respect to site, size, duration, history of previous amputation(s), and history of number and class of antibiotic intake prior to hospitalization. Clinical course and Wagner's grades of the diabetic foot ulcers were compared for aerobic and anaerobic infections. Results A total of 104 patients were included in the study. There were no significant differences between the two groups with regards to duration of diabetes, random blood sugar (RBS) at the time of admission, compliance to drugs, and mode of blood sugar control and prior intake of antibiotics. Patients with anaerobic infections were found to have a higher incidence of fever in this study (38.1% vs. 14.5%; p = 0.0057), as compared to patients with aerobic infections. More than half of the patients in the anaerobic infection group presented with Wagner's grade IV and above, as compared to the aerobic infection group (59.5% vs. 32.2%; p = 0.0059), which was statistically significant. Patients with anaerobic infections also had high numbers of major and minor amputations when compared to patients with aerobic infections. Conclusion Septic diabetic foot patients with fever at the time of admission and a high Wagner's grade have a greater chance of harbouring anaerobic infections. Drugs for anaerobic coverage should be considered for wounds beyond Wagner's grade III. Anaerobic infections resulted in increased risk of morbidity in diabetic foot ulcer patients but did not have any influence on mortality.

Tensorial Gross-Neveu models

NASA Astrophysics Data System (ADS)

Benedetti, Dario; Carrozza, Sylvain; Gurau, Razvan; Sfondrini, Alessandro

2018-01-01

We define and study various tensorial generalizations of the Gross-Neveu model in two dimensions, that is, models with four-fermion interactions and G 3 symmetry, where we take either G = U( N) or G = O( N). Such models can also be viewed as two-dimensional generalizations of the Sachdev-Ye-Kitaev model, or more precisely of its tensorial counterpart introduced by Klebanov and Tarnopolsky, which is in part our motivation for studying them. Using the Schwinger-Dyson equations at large- N, we discuss the phenomenon of dynamical mass generation and possible combinations of couplings to avoid it. For the case G = U( N),we introduce an intermediate field representation and perform a stability analysis of the vacua. It turns out that the only apparently viable combination of couplings that avoids mass generation corresponds to an unstable vacuum. The stable vacuum breaks U( N)3 invariance, in contradiction with the Coleman-Mermin-Wagner theorem, but this is an artifact of the large- N expansion, similar to the breaking of continuous chiral symmetry in the chiral Gross-Neveu model.

Santalum freycinetianum Gaudich

Treesearch

James A. Allen

2002-01-01

Santalum L. is a genus of about 25 species growing from India and Nepal to Australia and Polynesia, four of which are native to Hawaii (Wagner and others 1990). The native range of S. freycinetianum includes the Hawaiian islands of Oahu, Kauai, Lanai, Maui, and Molokai.

Earth Day at Union Station

NASA Image and Video Library

2013-04-22

Dr. Thomas Wagner, NASA Program Scientist for the cryosphere, gives a presentation on observing the Earth's Poles in front of the Hyperwall at at a NASA-sponsored Earth Day event at Union Station, Monday April 22, 2013 in Washington. Photo Credit: (NASA/Carla Cioffi)

20 CFR 662.200 - Who are the required One-Stop partners?

Code of Federal Regulations, 2010 CFR

2010-04-01

... vocational education activities under the Carl D. Perkins Vocational and Applied Technology Education Act (20... Wagner-Peyser Act (29 U.S.C. 49 et seq.); (WIA sec. 121(b)(1)(B)(ii)); (3) Adult education and literacy...

DOJ News Release: Local Contractor Pleads Guilty To Defrauding City Of Sacramento Of Stimulus Funds

EPA Pesticide Factsheets

SACRAMENTO, Calif. — US Attorney Benjamin B. Wagner announced today that Peter Scott, President of Advantage Demolition and Engineering (ADE), 47, of Roseville, pleaded guilty today to two counts of submitting false contractor bonds.

Retrospective Revaluation: The Phenomenon and Its Theoretical Implications

PubMed Central

Miller, Ralph R.; Witnauer, James E.

2015-01-01

Retrospective revaluation refers to an increase (or decrease) in responding to conditioned stimulus (CS X) as a result of decreasing (or increasing) the associative strength of another CS (A) with respect to the unconditioned stimulus (i.e., A-US) that was previously trained in compound with the target CS (e.g., AX−US or just AX). We discuss the conditions under which retrospective revaluation phenomena are most apt to be observed and their implications for various models of learning that are able to account for retrospective revaluation (e.g., Dickinson and Burke, 1996; Miller and Matzel, 1988; Van Hamme and Wasserman, 1994). Although retroactive revaluation is relatively parameter specific, it is seen to be a reliable phenomenon observed across many tasks and species. As it is not anticipated by many conventional models of learning (e.g., Rescorla and Wagner, 1972), it serves as a critical benchmark for evaluating traditional and newer models. PMID:26342855

Structure and Stratigraphy of the Rift Basins in the Northern Gulf of California: Results from Analysis of Seismic Reflection and Borehole Data.

NASA Astrophysics Data System (ADS)

Martín, A.; González, M.; Helenes, J.; García, J.; Aragón, M.; Carreño, A.

2008-12-01

The northern Gulf of California contains two parallel, north-south trending rift basin systems separated by a basement-high. The interpretation of several exploration wells, and ~4500 km of seismic reflection data from PEMEX (Mexican national oil company) indicate that the tectonically active basins to the west (Wagner- Consag and Upper Delfin basins) may have initiated synchronously with the now abandoned Tiburón- Tepoca-Altar basins to the east in the Sonora margin. In both basin systems the lower sequence (A) is marine mudstone-siltstone, has parallel reflectors and a largely uniform thickness that reaches up to1.5 km, and gradually pinches out toward the lateral margins. This suggests that the unit was deposited prior to their segmentation by transtensional faulting. Marine microfossils from borehole samples from sequence A in the Tiburón and Consag basins indicates middle Miocene (>11.2 Ma) proto-Gulf conditions. Sequence B conformably overlies sequence A, and is characterized by up to 2 km growth strata with a fanning geometry that show a clear genetic relationship to the major transtensional faults that control the segmentation of the two basin systems. Sequence C in the Tiburón and Tepoca basins is comparatively thin (<800 m) and includes several unconformities, but is much less affected by faulting. In contrast, sequence C in the active Wagner, Consag and Upper Delfin basin is a much thicker (up to 2 km) growth sequence with abundant volcanic intrusions. Marked variations in sequence C in the different basin systems clearly demonstrate a major westward shift of deformation and subsidence at this time. The modern depocenter in Wagner-Consag basins is controlled by the Consag and Wagner faults, which trend parallel to the north ~20 km apart, and show opposite normal offset. These two faults merge at an oblique angle (70°-50°, respectively) into the Cerro Prieto transform fault to the north and likely accommodate an important amount of dextral shear. To the south the Consag and Wagner faults connect with a diffuse zone of deformation defined by a series of NE trending faults with moderate normal displacement in the Upper Delfin basin. These NE-trending faults intersect the northern strand of the Ballenas transform fault along the Baja California margin, whereas the eastern end of the NE-trending faults is poorly defined along the western flank of the central antiform. In summary, sequence A was likely deposited across most of the northern gulf in the late Miocene, sequence B marks the onset of two discrete transtensional basin systems controlled by both low and high-angle faults in late Miocene-Pliocene time, and sequence C marks the regional migration of plate- margin shearing to its present location in the western gulf. Thermal effects associated with abundant volcanism and sedimentation along the western margin of the gulf likely controlled the asymmetric partitioning plate margin and shearing during the most recent phase of oblique rifting.

20 CFR 661.240 - How do the unified planning requirements apply to the five-year strategic WIA and Wagner-Peyser...

Code of Federal Regulations, 2010 CFR

2010-04-01

...) [Reserved] (6) Senior Community Service Employment Programs under title V of the Older Americans Act. (b... meeting the requirements of the Interagency guidance entitled State Unified Plan, Planning Guidance for...

76 FR 19310 - Information Collection; Certified State Mediation Program

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-07

... DEPARTMENT OF AGRICULTURE Farm Service Agency Information Collection; Certified State Mediation... supports the Certified State Mediation Program. The information collection is necessary to ensure the grant... submit comments by any of the following methods: Mail: Carol Wagner, Certified State Mediation Program...

48 CFR 4.602 - General.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false General. 4.602 Section 4.602 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION GENERAL ADMINISTRATIVE... nonprofit agencies operating under the Javits-Wagner-O'Day Act, are sharing in Federal contracts; (3) A...

20 CFR 651.10 - Definitions of terms used in parts 651-658.

Code of Federal Regulations, 2013 CFR

2013-04-01

... territory within a reasonable commuting distance. Labor Market Information (LMI) means that body of... to place the plan into effect. (Wagner-Peyser Act of 1933, as amended, 29 U.S.C. 49 et seq.; 5 U.S.C...

20 CFR 651.10 - Definitions of terms used in parts 651-658.

Code of Federal Regulations, 2012 CFR

2012-04-01

... territory within a reasonable commuting distance. Labor Market Information (LMI) means that body of... to place the plan into effect. (Wagner-Peyser Act of 1933, as amended, 29 U.S.C. 49 et seq.; 5 U.S.C...

20 CFR 651.10 - Definitions of terms used in parts 651-658.

Code of Federal Regulations, 2014 CFR

2014-04-01

... territory within a reasonable commuting distance. Labor Market Information (LMI) means that body of... to place the plan into effect. (Wagner-Peyser Act of 1933, as amended, 29 U.S.C. 49 et seq.; 5 U.S.C...

75 FR 66779 - Ruby Lake National Wildlife Refuge, Elko and White Pine Counties, NV; Comprehensive Conservation...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-29

...) 414-6500, or Guy Wagner, Refuge Manager, at (775) 779-2237. Further information may also be found at... the Mississippi River outside Alaska, and is a vital waterfowl nesting area. More than 200 springs...

Temporal maps and informativeness in associative learning.

PubMed

Balsam, Peter D; Gallistel, C Randy

2009-02-01

Neurobiological research on learning assumes that temporal contiguity is essential for association formation, but what constitutes temporal contiguity has never been specified. We review evidence that learning depends, instead, on learning a temporal map. Temporal relations between events are encoded even from single experiences. The speed with which an anticipatory response emerges is proportional to the informativeness of the encoded relation between a predictive stimulus or event and the event it predicts. This principle yields a quantitative account of the heretofore undefined, but theoretically crucial, concept of temporal pairing, an account in quantitative accord with surprising experimental findings. The same principle explains the basic results in the cue competition literature, which motivated the Rescorla-Wagner model and most other contemporary models of associative learning. The essential feature of a memory mechanism in this account is its ability to encode quantitative information.

Temporal maps and informativeness in associative learning

PubMed Central

Balsam, Peter D; Gallistel, C. Randy

2009-01-01

Neurobiological research on learning assumes that temporal contiguity is essential for association formation, but what constitutes temporal contiguity has never been specified. We review evidence that learning depends, instead, on learning a temporal map. Temporal relations between events are encoded even from single experiences. The speed with which an anticipatory response emerges is proportional to the informativeness of the encoded relation between a predictive stimulus or event and the event it predicts. This principle yields a quantitative account of the heretofore undefined, but theoretically crucial, concept of temporal pairing, an account in quantitative accord with surprising experimental findings. The same principle explains the basic results in the cue competition literature, which motivated the Rescorla–Wagner model and most other contemporary models of associative learning. The essential feature of a memory mechanism in this account is its ability to encode quantitative information. PMID:19136158

Hibiscus tiliaceus L

Treesearch

James A. Allen

2002-01-01

The genus Hibiscus includes about 200 species distributed primarily in the tropical and subtropical regions of the world. It is a highly variable genus, with relatively few characteristics in common (Wagner and others 1990). Hibiscus tiliaceus is one of the most widespread species in the genus, with a pantropical, mainly...

Structural, electrical and magnetic characteristics of improper multiferroic: GdFeO3

NASA Astrophysics Data System (ADS)

Sahoo, Sushrisangita; Mahapatra, P. K.; Choudhary, R. N. P.; Nandagoswami, M. L.; Kumar, Ashok

2016-06-01

Studies of dielectric, impedance, conductivity, magnetic and magneto-electric (ME) properties of GdFeO3 ceramics fabricated by chemical method are reported here. The synthesized powder is phase-pure and crystallizes in the orthorhombic crystal structure. Below 50 °C, the impedance has only grain contribution, while at higher temperatures, it has both grain and grain boundary contributions. Based on the depression angle of the Nyquist plot, the inhomogeneity of the sample is estimated. The capacitance data reveal that at low temperatures, the sample behaves as a leaky capacitor while at higher temperatures the sample shows the effect of the diffusion of thermally excited charge carriers across a barrier. In the low-frequency domain, the dielectric characteristics were explained on the basis of the Maxwell-Wagner mechanism, while in the high-frequency range those were correlated to the grain effect. The frequency dependent characteristic of the tangent loss is explained as a combined contribution from the Debye-like relaxation and dc conductivity related mechanism at higher temperatures. The temperature dependence of the dielectric characteristic and data are found to fit with two Gaussian peaks centered at 148 °C and 169 °C. While the first peak is explained on the basis of the Maxwell-Wagner mechanism, the second has its origin in magnetic reordering and the shifting of Gd3+ ions along the c-axis. The magnetic reordering also results in a sharp decrease of conductivity between 169 °C and 243 °C. The frequency dependent ac conductivity is explained on the basis of the correlated barrier hopping model and the quantum mechanical hopping model for the different frequency domain. The existence of P-E and M-H loops support its improper ferroelectric behavior and canted anti-ferromagnetism respectively. The ME coefficient of the sample is found to be 1.78 mV cm-1 Oe-1.

77 FR 59595 - Procurement List; Additions

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-28

... which would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection..., Defense Manpower Data Center, Defense Human Resource Center, Alexandria, VA (CONUS) NPA: InspiriTec, Inc., Philadelphia, PA Contracting Activity: DEFENSE HUMAN RESOURCES ACTIVITY, HQS DEFENSE HUMAN RESOURCES ACTY...

Lingua Franca English, Multilingual Communities, and Language Acquisition

ERIC Educational Resources Information Center

Canagarajah, Suresh

2007-01-01

Firth and Wagner (1997) questioned the dichotomies nonnative versus native speaker, learner versus user, and interlanguage versus target language, which reflect a bias toward innateness, cognition, and form in language acquisition. Research on lingua franca English (LFE) not only affirms this questioning, but reveals what multilingual communities…

2009 Human Factors and Roadway Safety Workshop : National Perspectives on Safety [SD .WMV (720x480/29fps/227.0 MB)

DOT National Transportation Integrated Search

2009-11-05

Iowa Department of Transportation Research and Technology Bureau video presentation from the 2009 human factors and roadway safety workshop session titled: National Perspectives on Safety : Essie Wagner, program analyst, National Highway Traffic Safe...

Generating Large Unit Staffs during Wartime Mobilization

DTIC Science & Technology

2013-12-10

war, the staff must have, “intelligence, presence of mind, and mental readiness, combined with energy , discretion, tact, and good health.”57 Wagner...The Seventh Corps at Camp Cuba Libre in Jacksonville, Florida formed and organized six brigades into three divisions from scratch.78 To add more

Unemployment Insurance. Maintaining the Foundation of Economic Security.

ERIC Educational Resources Information Center

Perspective: Essays and Reviews of Issues in Employment Security and Employment and Training Programs, 1985

1985-01-01

This issue of an annual journal contains 18 essays on unemployment insurance (UI) and employment and training programs. Part 1, "Historical Perspective," contains the following papers: "Reflections on Wisconsin and Unemployment Insurance" (Wilbur J. Cohen); "Outstanding Ideas Form UI's Foundation" (Richard Wagner); "One State's Experience: 1939"…

Cordia subcordata Lam

Treesearch

James A. Allen

2002-01-01

The genus Cordia contains about 250 species. They occur in tropical to warm temperate regions throughout the world, with the greatest diversity of species in the Neotropics (Wagner and others 1990). Cordia subcordata is apparently native to Malesia but has been spread throughout the Pacific and along Indian Ocean shores. The...

Differences in Thinking Styles of Artists and Engineers

ERIC Educational Resources Information Center

Gridley, Mark C.

2007-01-01

Seventy-one professional fine artists and 147 engineers completed Sternberg's Intellectual Styles Questionnaire (R. J. Sternberg & R. K. Wagner, 1991). Artists preferred less external input in their work than engineers preferred, and engineers were more inclined to prioritize their thinking. Artists preferred devising their own plans significantly…

Calophyllum inophyllum L

Treesearch

James A. Allen

2002-01-01

Calophyllum inophyllum is in a genus of about 110 species that are pantropical in distribution but most common in tropical Asia (Gentry 1993, Liberty Hyde Bailey Hortorium 1976, Wagner and others 1990). Native from east Africa to Australia and Malesia, C. inophyllum has been widely planted throughout the tropics, including many...

Soil Moisture Extremes Observed by METOP ASCAT: Was 2012 an Exceptional Year?

NASA Astrophysics Data System (ADS)

Wagner, Wolfgang; Paulik, Christoph; Hahn, Sebastian; Melzer, Thomas; Parinussa, Robert; de Jeu, Richard; Dorigo, Wouter; Chung, Daniel; Enenkel, Markus

2013-04-01

In summer 2012 the international press reported widely about the severe drought that had befallen large parts of the United States. Yet, the US drought was only one of several major droughts that occurred in 2012: Southeastern Europe, Central Asia, Brazil, India, Southern Australia and several other regions suffered from similarly dry soil conditions. This raises the question whether 2012 was an exceptionally dry year? In this presentation we will address this question by analyzing global soil moisture patterns as observed by the Advanced Scatterometer (ASCAT) flown on board of the METOP-A satellite. We firstly compare the 2012 ASCAT soil moisture data to all available ASCAT measurements acquired by the instrument since the launch of METOP-A in November 2006. Secondly, we compare the 2012 data to a long-term soil moisture data set derived by merging the ASCAT soil moisture data with other active and passive microwave soil moisture retrievals as described by Liu et al. (2012) and Wagner et al. (2012) (see also http://www.esa-soilmoisture-cci.org/). A first trend analysis of the latter long-term soil moisture data set carried out by Dorigo et al. (2012) has revealed that over the period 1988-2010 significant trends were observed over 27 % of the area covered by the data set, of which 73 % were negative (soil drying) and only 27 % were positive (soil wetting). In this presentation we will show how the inclusion of the years 2011 and 2012 affects the areal extent and strengths of these significant trends. REFERENCES Dorigo, W., R. de Jeu, D. Chung, R. Parinussa, Y. Liu, W. Wagner, D. Fernández-Prieto (2012) Evaluating global trends (1988-2010) in harmonized multi-satellite surface soil moisture, Geophysical Research Letters, 39, L18405, 1-7. Liu, Y.Y., W.A. Dorigo, R.M. Parinussa, R.A.M. de Jeu, W. Wagner, M.F. McCabe, J.P. Evans, A.I.J.M. van Dijk (2012) Trend-preserving blending of passive and active microwave soil moisture retrievals, Remote Sensing of Environment, 123, 280-297. Wagner, W., W. Dorigo, R. de Jeu, D. Fernandez, J. Benveniste, E. Haas, M. Ertl (2012) Fusion of active and passive microwave observations to create an Essential Climate Variable data record on soil moisture, ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences (ISPRS Annals), Volume I-7, XXII ISPRS Congress, Melbourne, Australia, 25 August-1 September 2012, 315-321.

A unifying model for elongational flow of polymer melts and solutions based on the interchain tube pressure concept

NASA Astrophysics Data System (ADS)

Wagner, Manfred Hermann; Rolón-Garrido, Víctor Hugo

2015-04-01

An extended interchain tube pressure model for polymer melts and concentrated solutions is presented, based on the idea that the pressures exerted by a polymer chain on the walls of an anisotropic confinement are anisotropic (M. Doi and S. F. Edwards, The Theory of Polymer Dynamics, Oxford University Press, New York, 1986). In a tube model with variable tube diameter, chain stretch and tube diameter reduction are related, and at deformation rates larger than the inverse Rouse time τR, the chain is stretched and its confining tube becomes increasingly anisotropic. Tube diameter reduction leads to an interchain pressure in the lateral direction of the tube, which is proportional to the 3rd power of stretch (G. Marrucci and G. Ianniruberto. Macromolecules 37, 3934-3942, 2004). In the extended interchain tube pressure (EIP) model, it is assumed that chain stretch is balanced by interchain tube pressure in the lateral direction, and by a spring force in the longitudinal direction of the tube, which is linear in stretch. The scaling relations established for the relaxation modulus of concentrated solutions of polystyrene in oligomeric styrene (M. H. Wagner, Rheol. Acta 53, 765-777, 2014, M. H. Wagner, J. Non-Newtonian Fluid Mech. http://dx.doi.org/10.1016/j.jnnfm.2014.09.017, 2014) are applied to the solutions of polystyrene (PS) in diethyl phthalate (DEP) investigated by Bhattacharjee et al. (P. K. Bhattacharjee et al., Macromolecules 35, 10131-10148, 2002) and Acharya et al. (M. V. Acharya et al. AIP Conference Proceedings 1027, 391-393, 2008). The scaling relies on the difference ΔTg between the glass-transition temperatures of the melt and the glass-transition temperatures of the solutions. ΔTg can be inferred from the reported zero-shear viscosities, and the BSW spectra of the solutions are obtained from the BSW spectrum of the reference melt with good accuracy. Predictions of the EIP model are compared to the steady-state elongational viscosity data of PS/DEP solutions. Except for a possible influence of solvent quality, linear and nonlinear viscoelasticity of entangled polystyrene solutions can thus be obtained from the linear-viscoelastic characteristics of a reference polymer melt and the shift of the glass transition temperature between melt and solution.

48 CFR 8.704 - Purchase priorities.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Purchase priorities. 8.704... Blind or Severely Disabled 8.704 Purchase priorities. (a) The Javits-Wagner-O'Day Act requires the Government to purchase supplies or services on the Procurement List, at prices established by the Committee...

How Students with Visual Impairments Can Learn Components of the Expanded Core Curriculum through Physical Education

ERIC Educational Resources Information Center

Lieberman, Lauren J.; Haegele, Justin A.; Columna, Luis; Conroy, Paula

2014-01-01

Research indicates that children with visual impairments demonstrate delays in fundamental motor skills, including locomotor, object control, and balance skills (Haibach, Lieberman, & Pritchett, 2011; Houwen, Hartman, & Visscher, 2010; Wagner, Haibach, & Lieberman, 2013). All of these skills are prerequisites to living an independent…

Enhancing Transportation Education Using Mobile Devices and Applications

ERIC Educational Resources Information Center

Gallup, Jennifer; Lamothe, Saron N.; Gallup, Adam

2015-01-01

The most salient aspect of independent living and successful post-high school transition to employment is having the ability to independently use transportation. Adolescents and young adults with disabilities continue to experience significantly lower employment rates than their peers without disabilities (Wagner et al., 2003). One way to support…

Adult Basic Skills: Innovations in Measurement and Policy Analysis. Series on Literacy: Research, Policy, and Practice.

ERIC Educational Resources Information Center

Tuijnman, Albert C., Ed.; Kirsch, Irwin S., Ed.; Wagner, Daniel A., Ed.

This book contains 13 papers examining innovations in measuring adults' basic skills and analyzing adult literacy policy. The following papers are included: "Series Preface" (Daniel A. Wagner); "Foreword" (Torsten Husen); "Introduction" (Albert Tuijnman); "Adult Basic Skills: Policy Issues and a Research…

Cultural Differences between Arabs and Americans: Individualism-Collectivism Revisited.

ERIC Educational Resources Information Center

Buda, Richard; Elsayed-Elkhouly, Sayed M.

1998-01-01

Cultural differences between Arabs and Americans were investigated using the individualism-collectivism survey of J. Wagner (1995). Arab subjects (n=331) were significantly more collectivist than U.S. subjects (n=102), and within the Arab group, Egyptian subjects (n=224) were significantly more individualistic than Gulf States subjects.…

Creating a Nation of Innovators. A Brief Report

ERIC Educational Resources Information Center

Fluellen, Jerry E., Jr.

2011-01-01

The Learning and Brain Conference for 2011 featured talks on a handful of themes including creativity, technology, education tomorrow, five minds for the future and innovation. Of these, innovation took center stage. Tony Wagner's opening plenary session became the conference prologue, examining innovation from several perspectives including seven…

12. Photographic copy of construction drawing, dated September 29, 1932, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. Photographic copy of construction drawing, dated September 29, 1932, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-25?? SDO 163 (ELEVATIONS) - Selfridge Field, Building Nos. 246 & 253, 246 Birch Street & 253 Wagner Street, Mount Clemens, Macomb County, MI

Validity Study of the Thinking Styles Inventory

ERIC Educational Resources Information Center

Black, Anne C.; McCoach, D. Betsy

2008-01-01

This article examines the psychometric properties of the 104-item Thinking Styles Inventory (TSI; Sternberg & Wagner, 1992) using responses from 789 students from 4 high schools in Connecticut. Twelve of the 13 subscales identified in mental self-government (MSG) theory (Sternberg, 1988, 1997) were included in all analyses. Both subscale- and…

78 FR 15283 - Uniform National Threshold Entered Employment Rate for Veterans

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-11

... DEPARTMENT OF LABOR Veterans' Employment and Training Service 20 CFR Part 1001 RIN 1293-AA18... Training Service, U.S. Department of Labor, 200 Constitution Avenue NW., Room S-1325, Washington, DC 20210... include ''labor exchange services * * * offered in accordance with the Wagner-Peyser Act.'' We interpret...

Mechanisms driving postfire abundance of a generalist mammal

Treesearch

R. Zwolak; D. E. Pearson; Y. K. Ortega; E. E. Crone

2012-01-01

Changes in vertebrate abundance following disturbance are commonly attributed to shifts in food resources or predation pressure, but underlying mechanisms have rarely been tested. We examined four hypotheses for the commonly reported increase in abundance of deer mouse (Peromyscus maniculatus (Wagner, 1845)) following forest fires: source-sink dynamics, decreased...

Vamistor resistor investigation

NASA Technical Reports Server (NTRS)

1973-01-01

Results are presented of the failure investigation conducted on resistors produced by the Vamistor Divison, Wagner Electric Corporation. This failure investigation included; failure analyses, chemical and metallurgical analyses, failure mechanism studies, seal leak analyses, and nondestructive stress tests. The data, information, conclusions, and recommendation can be helpful in assessing current usage of these resistors.

Racist Quotes from Persons of Note, Part II.

ERIC Educational Resources Information Center

Fikes, Robert, Jr.

1988-01-01

Offers racist quotes about Blacks, Jews, Hispanics, Asians, Italians, Poles, and others, from famous persons such as John Wayne, Woodrow Wilson, William F. Buckley, Richard Wagner, Jesse Helms, Sam Rayburn, Walter Lippman, Jack London, Paul Lynde, Theodore Roosevelt, Frank Sinatra, Errol Flynn, Ezra Pound, Richard M. Nixon, and Ronald Reagan. (BJV)

Bright gamma-ray emission from TCP J04432130+4721280 (V392 Per) detected by Fermi-LAT

NASA Astrophysics Data System (ADS)

Li, Kwan-Lok; Chomiuk, Laura; Strader, Jay

2018-05-01

We report the Fermi-LAT detection of the optical transient TCP J04432130+4721280 (V392 Per), which was discovered by Yuji Nakamura on 2018-04-29.4740 (CBET #4515) and later identified as a Galactic nova by Wagner et al. (ATel #11588).

File System Virtual Appliances

DTIC Science & Technology

2010-05-01

Technical Conference. USENIX Association, Berkeley, CA, 24–24. [31] Eisler , M., Corbett, P., Kazar, M., Nydick, D. S., and Wagner, C. 2007. Data ONTAP GX...and Operations Market Through 2012. http://www.gartner.com/it/page.jsp?id=638207. [37] Gingell, R. A., Moran, J. P., and Shannon, W. A. 1987 . Virtual

File System Virtual Appliances: Portable File System Implementations

DTIC Science & Technology

2010-04-01

com- puting. Santa Cruz, CA, 1994. [12] Michael Eisler , Peter Corbett, Michael Kazar, Daniel S. Nydick, and Christopher Wagner. Data ontap gx: a...fuse.sourceforge.net. [15] R. A. Gingell, J. P. Moran, and W. A. Shannon. Virtual memory architecture in sunos. USENIX ATC, pages 81–94, 1987 . [16

Sustaining Transformation: "Resiliency in Hard Times"

ERIC Educational Resources Information Center

Guarasci, Richard; Lieberman, Devorah

2009-01-01

The strategic, systemic, and encompassing evolution of a college or university spans a number of years, and the vagaries of economic cycles inevitably catch transforming institutions in mid-voyage. "Sustaining Transformation: Resiliency in Hard Times" presents a study of Wagner College as it moves into its second decade of purposeful…

20 CFR 652.8 - Administrative provisions.

Code of Federal Regulations, 2010 CFR

2010-04-01

... State staff, and verifiable for monitoring, reporting, audit and evaluation purposes (section 10(c)). (c... supporting the affidavit shall be maintained for audit purposes. (7) Payments from the State's Wagner-Peyser... against Reed Act funds (section 903(c) of the Social Security Act, as amended (42 U.S.C. 1103(c)) are...

20 CFR 652.8 - Administrative provisions.

Code of Federal Regulations, 2011 CFR

2011-04-01

... State staff, and verifiable for monitoring, reporting, audit and evaluation purposes (section 10(c)). (c... supporting the affidavit shall be maintained for audit purposes. (7) Payments from the State's Wagner-Peyser... against Reed Act funds (section 903(c) of the Social Security Act, as amended (42 U.S.C. 1103(c)) are...

High School Reform: Integration of Special Education. inForum

ERIC Educational Resources Information Center

Muller, Eve; Burdette, Paula

2007-01-01

Evidence suggests that students throughout the nation are not being adequately prepared for post-secondary life and that students with disabilities face even greater post-school challenges (Wagner, Newman, Cameto, Garza, & Levine, 2005). In response to such evidence, many states and localities are initiating high school reform activities and,…

Inundative Field Releases and Evaluation of Three Predators for Bemisia tabasi (Hemiptera: Aleyrodidae) Management in Three Vegetable Crops

USDA-ARS?s Scientific Manuscript database

The sweetpotato whitefly, Bemisia tabaci (Gennadius), is a global pest on numerous crops, including vegetables. Weekly inundative releases of a coccinellid predator (Coccinella undecimpunctata L.), a mirid predator [Macrophillus caliginosus (Wagner)] and a neuropteran predator [Chrysoperla carnea S...

Ice recrystallization kinetics in the presence of synthetic antifreeze glycoprotein analogues using the framework of LSW theory.

PubMed

Budke, C; Heggemann, C; Koch, M; Sewald, N; Koop, T

2009-03-05

The Ostwald ripening of polycrystalline ice in aqueous sucrose solutions was investigated experimentally. The kinetics of this ice recrystallization process was studied at temperatures between -6 and -10 degrees C and varying ice volume fractions. Using the theory of Lifshitz, Slyozov, and Wagner (LSW), the diffusion-limited rate constant for ice recrystallization was determined. Also, the effects of synthetic analogues of natural antifreeze glycoproteins (AFGP) were studied. These analogues synAFGPmi (i = 3-5) contained monosaccharide side groups instead of disaccharide side groups that occur in natural AFGP. In order to account for the inhibition effect of the synAFGPmi, we have modified classical LSW theory, allowing for the derivation of inhibition rate constants. It was found that the investigated synAFGPmi inhibit ice recrystallization at concentrations down to approximately 3 microg mL(-1) or, equivalently, approximately 1 micromol L(-1) for the largest synAFGPmi investigated: synAFGPm5. Hence, our new method is capable of quantitatively assessing the efficiency of very similar AFGP with a sensitivity that is at least 2 orders of magnitude larger than that typical for quantitative thermal hysteresis measurements.

Microstructural, optical and dielectric properties of La{sub 0.8}Ba{sub 0.2}FeO{sub 3} nanostructures synthesized by sol-gel combustion method

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ali, S. Asad, E-mail: asadsyyed@gmail.com; Naseem, Swaleha; Khan, Wasi

2015-06-24

Barium doped lanthanum ferrite (LaFeO{sub 3}) nanoparticles (NPs) were prepared by gel combustion method and calcinated at 700°C. Microstructural studies were carried by XRD and SEM techniques. The results of structural characterization show the formation of all samples in single phase without any impurity. Optical properties were studied by UV- visible technique. The energy band gap was calculated and obtained 3.01 eV. Dielectric properties characterized by LCR meter and have been observed appreciable changes. The observed behavior of the dielectric properties can be attributed on the basis of Koop’s theory based on Maxwell-Wagner two layer models in studied nanoparticles.

Magnetic and dielectric behavior of chromium substituted Co-Mg ferrite nanoparticles

NASA Astrophysics Data System (ADS)

Jadoun, Priya; Jyoti, Prashant, B. L.; Dolia, S. N.; Bhatnagar, D.; Saxena, V. K.

2016-05-01

The chromium doped Co-Mg ferrite with composition Co0.5Mg0.5Cr0.2Fe1.8O4 has been synthesized using sol-gel auto combustion method. The crystal structure has been analyzed by X-ray diffraction (XRD) technique. XRD pattern reveals the formation of single phase cubic spinel structure. The magnetic measurements show ferromagnetic behavior at room temperature and large coercivity is observed on cooling down the temperature to 20 K. Dielectric constant (ɛ') and dielectric loss tangent (tan δ) have been determined at room temperature as a function of frequency in the frequency range 75 kHz to 80 MHz. The decrease in dielectric constant with increasing frequency attributes to Maxwell Wagner model and conduction mechanism in ferrites.

Low temperature sintered giant dielectric permittivity CaCu3Ti4O12 sol-gel synthesized nanoparticle capacitors

NASA Astrophysics Data System (ADS)

Puli, Venkata Sreenivas; Adireddy, Shiva; Kothakonda, Manish; Elupula, Ravinder; Chrisey, Douglas B.

This paper reports on synthesis of polycrystalline complex perovskite CaCu3Ti4O12 (as CCTO) ceramic powders prepared by a sol-gel auto combustion method at different sintering temperatures and sintering times, respectively. The effect of sintering time on the structure, morphology, dielectric and electrical properties of CCTO ceramics is investigated. Tuning the electrical properties via different sintering times is demonstrated for ceramic samples. X-ray diffraction (XRD) studies confirm perovskite-like structure at room temperature. Abnormal grain growth is observed for ceramic samples. Giant dielectric permittivity was realized for CCTO ceramics. High dielectric permittivity was attributed to the internal barrier layer capacitance (IBLC) model associated with the Maxwell-Wagner (MW) polarization mechanism.

Early stages of Ostwald ripening

NASA Astrophysics Data System (ADS)

Shneidman, Vitaly A.

2013-07-01

The Becker-Döring (BD) nucleation equation is known to predict a narrow double-exponential front (DEF) in the distribution of growing particles over sizes, which is due to early transient effects. When mass conservation is included, nucleation is eventually exhausted while independent growth is replaced by ripening. Despite the enormous difference in the associated time scales, and the resulting demand on numerics, within the generalized BD model the early DEF is shown to be crucial for the selection of the unique self-similar Lifshitz-Slyozov-Wagner asymptotic regime. Being preserved till the latest stages of growth, the DEF provides a universal part of the initial conditions for the ripening problem, regardless of the mass exchange mechanism between the nucleus and the matrix.

Impedance and electric modulus approaches to investigate four origins of giant dielectric constant in CaCu3Ti4O12 ceramics

NASA Astrophysics Data System (ADS)

Yuan, Wen-Xiang

2012-03-01

The frequency dependence of electric modulus of polycrystalline CaCu3Ti4O12 (CCTO) ceramics has been investigated. The experimental data have also been analyzed in the complex plane of impedance and electric modulus, and a suitable equivalent circuit has been proposed to explain the dielectric response. Four dielectric responses are first distinguished in the impedance and modulus spectroscopies. The results are well interpreted in terms of a triple insulating barrier capacitor model. Using this model, these four dielectric relaxations are attributed to the domain, domain-boundary, grain-boundary, and surface layer effects with three Maxwell-Wagner relaxations. Moreover, the values of the resistance and capacitance of bulk CCTO phase, domain-boundary, grain-boundary and surface layer contributions have been calculated directly from the peak characteristics of spectroscopic plots.

ecco: An error correcting comparator theory.

PubMed

Ghirlanda, Stefano

2018-03-08

Building on the work of Ralph Miller and coworkers (Miller and Matzel, 1988; Denniston et al., 2001; Stout and Miller, 2007), I propose a new formalization of the comparator hypothesis that seeks to overcome some shortcomings of existing formalizations. The new model, dubbed ecco for "Error-Correcting COmparisons," retains the comparator process and the learning of CS-CS associations based on contingency. ecco assumes, however, that learning of CS-US associations is driven by total error correction, as first introduced by Rescorla and Wagner (1972). I explore ecco's behavior in acquisition, compound conditioning, blocking, backward blocking, and unovershadowing. In these paradigms, ecco appears capable of avoiding the problems of current comparator models, such as the inability to solve some discriminations and some paradoxical effects of stimulus salience. At the same time, ecco exhibits the retrospective revaluation phenomena that are characteristic of comparator theory. Copyright © 2018 Elsevier B.V. All rights reserved.

Oxygen flux and dielectric response study of Mixed Ionic-Electronic Conducting (MIEC) heterogeneous functional materials

NASA Astrophysics Data System (ADS)

Rabbi, Fazle

Dense mixed ionic-electronic conducting (MIEC) membranes consisting of ionic conductive perovskite-type and/or fluorite-type oxides and high electronic conductive spinel type oxides, at elevated temperature can play a useful role in a number of energy conversion related systems including the solid oxide fuel cell (SOFC), oxygen separation and permeation membranes, partial oxidization membrane reactors for natural gas processing, high temperature electrolysis cells, and others. This study will investigate the impact of different heterogeneous characteristics of dual phase ionic and electronic conductive oxygen separation membranes on their transport mechanisms, in an attempt to develop a foundation for the rational design of such membranes. The dielectric behavior of a material can be an indicator for MIEC performance and can be incorporated into computational models of MIEC membranes in order to optimize the composition, microstructure, and ultimately predict long term membrane performance. The dielectric behavior of the MIECs can also be an indicator of the transport mechanisms and the parameters they are dependent upon. For this study we chose a dual phase MIEC oxygen separation membrane consisting of an ionic conducting phase: gadolinium doped ceria-Ce0.8 Gd0.2O2 (GDC) and an electronic conductive phase: cobalt ferrite-CoFe2O4 (CFO). The membranes were fabricated from mixtures of Nano-powder of each of the phases for different volume percentages, sintered with various temperatures and sintering time to form systematic micro-structural variations, and characterized by structural analysis (XRD), and micro-structural analysis (SEM-EDS). Performance of the membranes was tested for variable partial pressures of oxygen across the membrane at temperatures from 850°C-1060°C using a Gas Chromatography (GC) system. Permeated oxygen did not directly correlate with change in percent mixture. An intermediate mixture 60%GDC-40%CFO had the highest flux compared to the 50%GDC-50%CFO and 80%GDC-20%CFO mixtures. Material characterization suggests the emergence of a third phase contributing to the behavior. Microstructural studies suggested changes in micro-structure of a given volume fraction for different sintering temperature and sintering time. Flux variation was observed for membranes with the same constituent volume fraction but different micro-structure indicating the effects of the micro-structure on the overall oxygen permeation. To correlate the experimental flux measurement with a standard Wagner's flux equation, different microstructural characteristics were studied to incorporate them into a modified Wagner's flux equation. In-situ broadband dielectric spectroscopy measurements over a temperature range of 850°C-1060°C and frequency range of (0.1Hz-1MHz) of the operating 60%GDC-40%CFO mixture oxygen separation membranes were measured using a NOVOCONTROL dielectric spectroscopy test system. Dielectric response of the operating membrane was studied to identify the charge transfer process in the membrane. A computational model to study the dielectric impedance response of different microstructure was developed using a COMSOL(TM) Multiphysics qasi-static electromagnetic module. This model was validated using model materials with regular geometric shapes. To measure impedance of real micro/nano-structures of the membrane material, domains required for the COMSOL calculation were obtained from actual micro/nano structures by using 3D scans from X-ray nano and micro tomography. Simpleware(TM) software was used to generate 3D domains from image slices obtained from the 3D x-ray scans. Initial voltage distributions on the original microstructure were obtained from the computational model. Similarly, development of a primary model for simulating ionic/electronic species flow inside of an MIEC was also begun. The possibility of using broadband dielectric spectroscopy methods to understand and anticipate the flux capabilities of MIECs to reduce the cost and time of development of such material systems was explored.

Numerical Study of Microstructural Evolution During Homogenization of Al-Si-Mg-Fe-Mn Alloys

NASA Astrophysics Data System (ADS)

Priya, Pikee; Johnson, David R.; Krane, Matthew J. M.

2016-09-01

Microstructural evolution during homogenization of Al-Si-Mg-Fe-Mn alloys occurs in two stages at different length scales: while holding at the homogenization temperature (diffusion on the scale of the secondary dendrite arm spacing (SDAS) in micrometers) and during quenching to room temperature (dispersoid precipitation at the nanometer to submicron scale). Here a numerical study estimates microstructural changes during both stages. A diffusion-based model developed to simulate evolution at the SDAS length scale predicts homogenization times and microstructures matching experiments. That model is coupled with a Kampmann Wagner Neumann-based precipitate nucleation and growth model to study the effect of temperature, composition, as-cast microstructure, and cooling rates during posthomogenization quenching on microstructural evolution. A homogenization schedule of 853 K (580 °C) for 8 hours, followed by cooling at 250 K/h, is suggested to optimize microstructures for easier extrusion, consisting of minimal α-Al(FeMn)Si, no β-AlFeSi, and Mg2Si dispersoids <1 μm size.

Effect of Base Sequence "Defects" on the Electrostatic Potential of Dissolved DNA

NASA Astrophysics Data System (ADS)

Adams, Scott V.; Wagner, Katrina; Kephart, Thomas S.; Edwards, Glenn

1997-11-01

An analytical model of the electrostatic potential surrounding dissolved DNA has been developed. The model consists of an all-atom, mathematically helical structure for DNA, in which the atoms are arranged in infinite lines of discrete point charges on concentric cylindrical surfaces. The surrounding solvent and counterions are treated with the Debye-Huckel approximation (Wagner et al., Biophysical Journal 73, 21-30, 1997). Variation in the electrostatic potential due to structural differences between A, B, and Z conformations and homopolymer base sequence is apparent. The most recent modification to the model exploits the principle of superposition to calculate the potential of DNA with a base sequence containing `defects.' That is, the base sequence is no longer uniform along the polymer. Differences between the potential of homopolymer DNA and the potential of DNA containing base `defects' are immediately obvious. These results may aid in understanding the role of electrostatics in base-sequence specificity exhibited by DNA-binding proteins.

The acquisition of conditioned responding.

PubMed

Harris, Justin A

2011-04-01

This report analyzes the acquisition of conditioned responses in rats trained in a magazine approach paradigm. Following the suggestion by Gallistel, Fairhurst, and Balsam (2004), Weibull functions were fitted to the trial-by-trial response rates of individual rats. These showed that the emergence of responding was often delayed, after which the response rate would increase relatively gradually across trials. The fit of the Weibull function to the behavioral data of each rat was equaled by that of a cumulative exponential function incorporating a response threshold. Thus, the growth in conditioning strength on each trial can be modeled by the derivative of the exponential--a difference term of the form used in many models of associative learning (e.g., Rescorla & Wagner, 1972). Further analyses, comparing the acquisition of responding with a continuously reinforced stimulus (CRf) and a partially reinforced stimulus (PRf), provided further evidence in support of the difference term. In conclusion, the results are consistent with conventional models that describe learning as the growth of associative strength, incremented on each trial by an error-correction process.

The influence of averaging procedure on the accuracy of IVIVC predictions: immediate release dosage form case study.

PubMed

Ostrowski, Michalł; Wilkowska, Ewa; Baczek, Tomasz

2010-12-01

In vivo-in vitro correlation (IVIVC) is an effective tool to predict absorption behavior of active substances from pharmaceutical dosage forms. The model for immediate release dosage form containing amoxicillin was used in the presented study to check if the calculation method of absorption profiles can influence final results achieved. The comparison showed that an averaging of individual absorption profiles performed by Wagner-Nelson (WN) conversion method can lead to lose the discrimination properties of the model. The approach considering individual plasma concentration versus time profiles enabled to average absorption profiles prior WN conversion. In turn, that enabled to find differences between dispersible tablets and capsules. It was concluded that in the case of immediate release dosage form, the decision to use averaging method should be based on an individual situation; however, it seems that the influence of such a procedure on the discrimination properties of the model is then more significant. © 2010 Wiley-Liss, Inc. and the American Pharmacists Association

A lumped model of venting during thermal runaway in a cylindrical Lithium Cobalt Oxide lithium-ion cell

NASA Astrophysics Data System (ADS)

Coman, Paul T.; Rayman, Sean; White, Ralph E.

2016-03-01

This paper presents a mathematical model built for analyzing the intricate thermal behavior of a 18650 LCO (Lithium Cobalt Oxide) battery cell during thermal runaway when venting of the electrolyte and contents of the jelly roll (ejecta) is considered. The model consists of different ODEs (Ordinary Differential Equations) describing reaction rates and electrochemical reactions, as well as the isentropic flow equations for describing electrolyte venting. The results are validated against experimental findings from Golubkov et al. [1] [Andrey W. Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitice Alexander Thaler and Viktor Hacker, RSC Advances, 4:3633-3642, 2014] for two cases - with flow and without flow. The results show that if the isentropic flow equations are not included in the model, the thermal runaway is triggered prematurely at the point where venting should occur. This shows that the heat dissipation due to ejection of electrolyte and jelly roll contents has a significant contribution. When the flow equations are included, the model shows good agreement with the experiment and therefore proving the importance of including venting.

Rheological characterization of thermal, thermo-oxidative and photo-oxidative degradation of LDPE

NASA Astrophysics Data System (ADS)

Rolón-Garrido, Víctor Hugo; Wagner, Manfred Hermann

2015-04-01

Rheology has been used to study thermal degradation (V. H. Rolón-Garrido et al., Rheol. Acta 50, 519-535, 2011), thermo-oxidative degradation (V. H. Rolón-Garrido et al., Rheol. Acta 50, 519-535, 2011; V. H. Rolón-Garrido et al., J. Rheol. 57, 105-129, 2013) and photo-oxidative degradation (V. H. Rolón-Garrido and M. H. Wagner, Polym. Degrad. Stab. 99, 136-145, 2014; V. H. Rolón-Garrido and M. H. Wagner, J. Rheol. 58, 199-22 2, 2014; V. H. Rolón-Garrido et al., Polym. Degrad. Stab. 111, 46-54, 2015) of low-density polyethylene (LDPE). This contribution presents the analogies and differences between these types of degradations of LDPE on the linear (by use of van-Gurp Palmen plots) and non-linear viscoelastic properties (by use of the parameters of the MSF model, fmax2 and β), as well as on the failure mode of the samples (through the maximum strain and stress achieved experimentally). In contrast to thermal and thermo-oxidative degradation, the linear viscoelastic properties of photo-oxidated samples were more affected by degradation. In the non-linear regime, for thermal and thermo-oxidative treated samples, the elongational measurements elucidated the role of chain scission and long-chain branching (LCB) formation, while for photo-oxidated LDPE even the competition between chain scission, LCB formation, and gel formation was demonstrated. The failure behavior was found to be determined by a constant maximum strain in thermo-oxidative degradation, if the LDPE has high content in branching points, or in photo-oxidative degraded LDPE, if a considerable portion of gel structure is present. Otherwise, either the maximum strain or stress measured was found to be strain-rate dependent.

A Comparative Study of Some Dynamic Stall Models

NASA Technical Reports Server (NTRS)

Reddy, T. S. R.; Kaza, K. R. V.

1987-01-01

Three semi-empirical aerodynamic stall models are compared with respect to their lift and moment hysteresis loop prediction, limit cycle behavior, easy implementation, and feasibility in developing the parameters required for stall flutter prediction of advanced turbines. For the comparison of aeroelastic response prediction including stall, a typical section model and a plate structural model are considered. The response analysis includes both plunging and pitching motions of the blades. In model A, a correction to the angle of attack is applied when the angle of attack exceeds the static stall angle. In model B, a synthesis procedure is used for angles of attack above static stall angles and the time history effects are accounted through the Wagner function. In both models the life and moment coefficients for angle of attack below stall are obtained from tabular data for a given Mach number and angle of attack. In model C, referred to an the ONERA model, the life and moment coefficients are given in the form of two differential equations, one for angles below stall, and the other for angles above stall. The parameters of those equations are nonlinear functions of the angle of attack.

Situational Judgment Test Research: Informing the Debate on Practical Intelligence Theory

ERIC Educational Resources Information Center

McDaniel, Michael A.; Whetzel, Deborah L.

2005-01-01

[Gottfredson, L. S. (2003). Dissecting practical intelligence theory: Its claims and evidence. Intelligence, 31, 343-397.] provided a detailed critique of Sternberg's [Sternberg, R. J., Fotsythe, G. B., Hedlund, J., Horvath, J. A., Wagner, R. K., Williams, W. M., Snook, S. A., Grigorenko, E. L. (2000). Practical intelligence in everyday life. New…

Will Discrete Mathematics Surpass Calculus in Importance? and Responses .

ERIC Educational Resources Information Center

Ralston, Anthony; And Others

1984-01-01

Ralston proposes that the decrease in the importance of calculus in the world of mathematics is accelerating and the world of applied mathematics is changing rapidly. He briefly presents arguments for discrete mathematics. Then follow reactions from McLane, Wagner, Hilton, Woodriff, Kleitman, and Lax, and a response by Ralston. (MNS)

Preparing Students for the Future--21st Century Skills

ERIC Educational Resources Information Center

Velez, Alejandra

2012-01-01

The 21st century economy is driven by information and communication technologies (ICT). This change has made innovation, manufacturing and production of products and services, rather than manufacturing of material goods, the driving force of economies of leading countries (Wagner, 2008). Due to this shift, today's 21st century society and…

78 FR 76398 - Qualification of Drivers; Exemption Applications; Diabetes Mellitus

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-17

... W. Foster (TN), Francis M. Garlach, III (PA), Darren L. Graham (TX), James M. Harvey (OH), Jerry D...), Richard D. Stalter (AR), Charles W. Sterling (WA), and Carl F. Wagner, Jr. (IN) from the ITDM requirement... applications, FMCSA exempts Toni Benfield (SC), Delbert L. Bennett, Jr. (ID), Daniel A. Bryan (PA), Stephen A...

Evaluating the Outcomes of an eMentoring Program

ERIC Educational Resources Information Center

Penny, Chris; Bolton, David

2011-01-01

While the term mentor can mean different things to different people, a true mentoring relationship is "characterized by a richness of interdependence between two people" (O'Neill, Wagner, & Gomez, 1996, p. 42). In the last 20 years, mentoring has become more popular in education. The increased interest in mentoring has resulted in part from the…

26th National Neurotrauma Symposium

DTIC Science & Technology

2008-12-31

Sanchez Alvaro I., Puyana Juan C., Fabio Anthony, Adelson P. David 81 COMPARATIVE NEUROPROTECTIVE EFFECTS OF CYCLOSPORIN A AND NIM811, A NON...Xiangbai, Fabio Anthony, Yuan Zhifang, Niyonkuru Christian, Wagner Amy 99 ACTIVATION OF MITOCHONDRIAL UNCOUPLING PROTEINS BY POLYUNSATURATED FATTY...Metabolism/Physiological Assessments TBI Mitchell Cohen University of California, San Francisco Ferguson Adam, Cohen Mitchell, Morabito Diane

The Art of Opera.

ERIC Educational Resources Information Center

King, David L.

1994-01-01

Describes a two-week arts appreciation unit implemented by a sixth-grade teacher at Graham Elementary School in Los Angeles. The unit introduces the students to Parisian art and architecture, the music of Wagner and Stravinsky, and the paintings of Monet and Chagall. Visual and aural exposure to art and music, group discussions, and hands-on art…

What Are the Thinking Styles of Turkish Student Teachers?

ERIC Educational Resources Information Center

Fer, Seval

2007-01-01

Background: The Thinking Styles Inventory--developed by Sternberg and Wagner based on Sternberg's (1988, 1997) earlier theory of mental self-government--was selected for the research in order to assess thinking styles of student teachers. Another reason is that the theoretical constructs, as well as the inventory generated from the theory, have…

78 FR 9386 - Procurement List; Addition

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-08

... INFORMATION CONTACT: Barry S. Lineback, Telephone: (703) 603-7740, Fax: (703) 603-0655, or email CMTEFedReg... Government under 41 U.S.C. 8501-8506 and 41 CFR 51-2.4. Regulatory Flexibility Act Certification I certify... would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 8501-8506) in connection with...

11. Photographic copy of construction drawing, dated July 29, 1932, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Photographic copy of construction drawing, dated July 29, 1932, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-2511 SDO 139 (FLOOR PLANS) - Selfridge Field, Building Nos. 246 & 253, 246 Birch Street & 253 Wagner Street, Mount Clemens, Macomb County, MI

11. Photographic copy of construction drawing, dated September 20, 1930, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Photographic copy of construction drawing, dated September 20, 1930, Construction Division Office of the Quartermaster General in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-1548, SDO 133 (SECTIONS, EXTERIOR DETAILS) - Selfridge Field, Building Nos. 248, 252 & 254, 248 Birch Street & 252, 254 Wagner Street, Mount Clemens, Macomb County, MI

16. Photographic copy of construction drawing, dated July 29, 1932, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

16. Photographic copy of construction drawing, dated July 29, 1932, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-2512, SDO 182 (VESTIBULE DETAILS) - Selfridge Field, Building Nos. 242, 247, 250, 242 & 247 Birch Street & 250 Wagner Street, Mount Clemens, Macomb County, MI

14. Photographic copy of construction drawing, dated July 29, 1932, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

14. Photographic copy of construction drawing, dated July 29, 1932, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-2513, SDO 183 (SECTIONS) - Selfridge Field, Building Nos. 242, 247, 250, 242 & 247 Birch Street & 250 Wagner Street, Mount Clemens, Macomb County, MI

13. Photographic copy of construction drawing, dated July 29, 1932, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photographic copy of construction drawing, dated July 29, 1932, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-2512, SDO 132 (VESTIBULE DETAILS) - Selfridge Field, Building Nos. 248, 252 & 254, 248 Birch Street & 252, 254 Wagner Street, Mount Clemens, Macomb County, MI

Smooth Move: A Psychoeducational Program for High School Seniors to Ease the Emotional Transition to College

ERIC Educational Resources Information Center

Collins, Mary H.

2010-01-01

The transition to college is considered to be a stressful time. Nearly all first year students experience loneliness, but many also experience stress, anxiety, depression, substance abuse, eating disorders, and suicidal thoughts (Compas, Wagner, Slavia, & Vannatta, 1986; Nicpon, Huser, Blanks, Sollenberger, Befort, & Robinson Kurpius, 2006-2007;…

Carbocyclization cascades of allyl ketenimines via aza-Claisen rearrangements of N-phosphoryl-N-allyl-ynamides.

PubMed

DeKorver, Kyle A; Wang, Xiao-Na; Walton, Mary C; Hsung, Richard P

2012-04-06

A series of carbocyclization cascades of allyl ketenimines initiated through a thermal aza-Claisen rearrangement of N-phosphoryl-N-allyl ynamides is described. Interceptions of the cationic intermediate via Meerwein-Wagner rearrangements and polyene-type cyclizations en route to fused bi- and tricyclic frameworks are featured.

Carbocyclization Cascades of Allyl Ketenimines via Aza-Claisen Rearrangements of N-Phosphoryl-N-Allyl-Ynamides

PubMed Central

DeKorver, Kyle A.; Wang, Xiao-Na; Walton, Mary C.; Hsung, Richard P.

2012-01-01

A series of carbocyclization cascades of allyl ketenimines initiated through a thermal aza-Claisen rearrangement of N-phosphoryl-N-allyl ynamides is described. Interceptions of the cationic intermediate via Meerwein-Wagner rearrangements and polyene-type cyclizations en route to fused bi- and tricyclic frameworks are featured. PMID:22414252

Factors in Successful Post-School Transitions. Research Brief. Winter 2013

ERIC Educational Resources Information Center

LoBianco, Tony; Kleinert, Harold L.

2013-01-01

Young adults with disabilities face multiple challenges in obtaining successful post-school outcomes. In a National Longitudinal Transition Study-2 report, Wagner, Newman, Cameto, Garza, and Levine (2005) found that for former students with disabilities, 70% had engaged in paid employment since leaving high school, though only 40% were employed at…

76 FR 76980 - Notice of Listing of Members of the Food and Drug Administration's Senior Executive Service...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-09

...'Tonya Davis Sheryl Lard-Whiteford David Elder Murray Lumpkin Denise Esposito William Maisel Tracy Forfa... Steven Solomon Daniel McChesney Stephen Spielberg William McConagha Roberta Wagner Patrick McGarey David... Murphy Donald Zink Melinda Plaisier Lynne Rice Mark Roh James Sigg Steven Silverman Howard Sklamberg...

Three Fundamental Concepts in Second Language Acquisition and Their Relevance in Multilingual Contexts

ERIC Educational Resources Information Center

Kramsch, Claire; Whiteside, Anne

2007-01-01

This article considers how 3 fundamental concepts of second language acquisition (SLA), the native speaker, interlanguage, and the language learner have fared since Firth and Wagner (1997). We review the ascendancy of these concepts and their relationship to the traditional dichotomies of language learning versus language use and individual mind…

Body and Language: Intercultural Learning through Drama. Advances in Foreign and Second Language Pedagogy.

ERIC Educational Resources Information Center

Brauer, Gerd, Ed.

This third volume in a series provides an introduction to the use of drama in the foreign and second language classroom, highlighting the bridging character of drama-based teaching for intercultural learning. Twelve chapters include: (1) "Understanding Drama-Based Education" (Betty Jane Wagner); (2) "Intercultural Recognitions…

76 FR 76182 - Agency Information Collection Activities; Submission for OMB Review; Comment Request; Planning...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-06

... for OMB Review; Comment Request; Planning Guidance and Instructions for Submission of the Strategic... for Submission of the Strategic State Plan and Plan Modifications for Title I of the Workforce Investment Act and Wagner-Peyser Act,'' as proposed to be revised, to the Office of Management and Budget...

WORLD TRADE CENTER FINE PARTICULATE MATTER CAUSES RESPIRATORY TRACT HYPERRESPONSIVENESS IN MICE

EPA Science Inventory

World Trade Center Fine Particulate Matter Causes Respiratory Tract Hyperresponsiveness in Mice

Stephen H. Gavett1, Najwa Haykal-Coates1, Jerry W. Highfill1, Allen D. Ledbetter1, Lung Chi Chen2, Mitchell D. Cohen2, Jack R. Harkema3, James G. Wagner3, and Daniel L. Costa1.<...

Handicapped Workers Legislation, 1970.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Committee on Labor and Public Welfare.

Presented is Congressional testimony on S. 2461, To amend the Randolph-Sheppard Act for the blind so as to make certain improvements therein, and for other purposes, and on S. 3425, To amend the Wagner-O'Day Act to extend the provisions thereof to severely handicapped individuals who are not blind, and for other purposes. Testimony for…

Appraising Lexical Bundles in Mathematics Classroom Discourse: Obligation and Choice

ERIC Educational Resources Information Center

Herbel-Eisenmann, Beth; Wagner, David

2010-01-01

Working from a large corpus of transcripts from secondary mathematics classrooms, we identify patterns of speech that encode interpersonal positioning. We extend our analysis from a previous article (Herbel-Eisenmann, Wagner & Cortes, Educ Stud Math, 2010, in press), in which we introduced a concept from corpus linguistics--a "lexical bundle,"…

X-ray excited Auger transitions of Pu compounds

DOE Office of Scientific and Technical Information (OSTI.GOV)

Nelson, Art J., E-mail: nelson63@llnl.gov; Grant, William K.; Stanford, Jeff A.

2015-05-15

X-ray excited Pu core–valence–valence and core–core–valence Auger line-shapes were used in combination with the Pu 4f photoelectron peaks to characterize differences in the oxidation state and local electronic structure for Pu compounds. The evolution of the Pu 4f core-level chemical shift as a function of sputtering depth profiling and hydrogen exposure at ambient temperature was quantified. The combination of the core–valence–valence Auger peak energies with the associated chemical shift of the Pu 4f photoelectron line defines the Auger parameter and results in a reliable method for definitively determining oxidation states independent of binding energy calibration. Results show that PuO{sub 2},more » Pu{sub 2}O{sub 3}, PuH{sub 2.7}, and Pu have definitive Auger line-shapes. These data were used to produce a chemical state (Wagner) plot for select plutonium oxides. This Wagner plot allowed us to distinguish between the trivalent hydride and the trivalent oxide, which cannot be differentiated by the Pu 4f binding energy alone.« less

Impact of revascularization and factors associated with limb salvage in patients with diabetic foot.

PubMed

Hinojosa, Carlos A; Boyer-Duck, Estefanía; Anaya-Ayala, Javier E; Núñez-Salgado, Ana E; Laparra-Escareno, Hugo; Lizola, René

2018-01-01

Diabetic foot is a common cause of hospitalization. To examine the impact of revascularization on lower limb salvage. Retrospective study of diabetic patients with foot ulcers. The extent of tissue loss was assessed according to the PEDIS and Wagner classifications, and revascularization indications and techniques were evaluated. Factors involved with major amputation and limb salvage were assessed with Fisher's and chi-square tests. A total of 307 patients with a mean age of 61 years were included in the study; 198 (64%) were males; 53 (17%) underwent limb revascularization, 26 (8%) with endovascular techniques and 27 (9%) with open surgery; 27 belonged to PEDIS grade 3 (51%) and 21 (41%) to Wagner's classification grade 4; 52% of revascularized patients required major amputation versus 25% of those without revascularization. Comorbidities, demographic variables, complications and mortality showed no differences when patients who required major amputation were compared with those who didn't. Despite revascularization, the limb was preserved in less than 50% of patients. Early referral to vascular surgery and appropriate patient-selection criteria might increase limb salvage. Copyright: © 2018 SecretarÍa de Salud.

Mermin-Wagner theorem, flexural modes, and degraded carrier mobility in two-dimensional crystals with broken horizontal mirror symmetry

NASA Astrophysics Data System (ADS)

Fischetti, Massimo V.; Vandenberghe, William G.

2016-04-01

We show that the electron mobility in ideal, free-standing two-dimensional "buckled" crystals with broken horizontal mirror (σh) symmetry and Dirac-like dispersion (such as silicene and germanene) is dramatically affected by scattering with the acoustic flexural modes (ZA phonons). This is caused both by the broken σh symmetry and by the diverging number of long-wavelength ZA phonons, consistent with the Mermin-Wagner theorem. Non-σh-symmetric, "gapped" 2D crystals (such as semiconducting transition-metal dichalcogenides with a tetragonal crystal structure) are affected less severely by the broken σh symmetry, but equally seriously by the large population of the acoustic flexural modes. We speculate that reasonable long-wavelength cutoffs needed to stabilize the structure (finite sample size, grain size, wrinkles, defects) or the anharmonic coupling between flexural and in-plane acoustic modes (shown to be effective in mirror-symmetric crystals, like free-standing graphene) may not be sufficient to raise the electron mobility to satisfactory values. Additional effects (such as clamping and phonon stiffening by the substrate and/or gate insulator) may be required.

A Unified Theory for Plants and Plant Structure

NASA Astrophysics Data System (ADS)

Wagner, Orvin E.

1998-04-01

The wave theory provides for quantization of plant structure. If one measures many spacings between plant structures it becomes apparent that certain spacings repeat from plant to plant. These spacings are associated with certain discrete frequencies associated with plant operation. When a branch grows it extend by one or more of discrete half wavelengths associated with permitted frequencies. If conditions are optimum it grows by the larger permitted half wavelengths. The angle that the branch makes with the vertical also determines the length because vertical wave velocities are in general larger than horizontal wave velocities as mentioned in the previous abstract. It also appears that cell dimensions are determined by permitted wavelengths. In conifer fiber cells it appears that there is an exact ratio between the average reciprocals of vertical lengths and horizontal reciprocal averages with a value of 1.50 in the data taken so far. Similar ratios for external structure spacings include 1.50, 1.25, 1.33, 1.66, 3.0, These ratios appear to represent ratios of vertical to horizontal velocities (Wagner 1996). See the Wagner web page.

Extraction of High Quality DNA from Seized Moroccan Cannabis Resin (Hashish)

PubMed Central

El Alaoui, Moulay Abdelaziz; Melloul, Marouane; Alaoui Amine, Sanaâ; Stambouli, Hamid; El Bouri, Aziz; Soulaymani, Abdelmajid; El Fahime, Elmostafa

2013-01-01

The extraction and purification of nucleic acids is the first step in most molecular biology analysis techniques. The objective of this work is to obtain highly purified nucleic acids derived from Cannabis sativa resin seizure in order to conduct a DNA typing method for the individualization of cannabis resin samples. To obtain highly purified nucleic acids from cannabis resin (Hashish) free from contaminants that cause inhibition of PCR reaction, we have tested two protocols: the CTAB protocol of Wagner and a CTAB protocol described by Somma (2004) adapted for difficult matrix. We obtained high quality genomic DNA from 8 cannabis resin seizures using the adapted protocol. DNA extracted by the Wagner CTAB protocol failed to give polymerase chain reaction (PCR) amplification of tetrahydrocannabinolic acid (THCA) synthase coding gene. However, the extracted DNA by the second protocol permits amplification of THCA synthase coding gene using different sets of primers as assessed by PCR. We describe here for the first time the possibility of DNA extraction from (Hashish) resin derived from Cannabis sativa. This allows the use of DNA molecular tests under special forensic circumstances. PMID:24124454

Procalcitonin and proinflammatory parameters in diabetic foot infection as new predictive factor

NASA Astrophysics Data System (ADS)

Raheem, Shler Gh.; Al-Barzinji, Ruqaya M.; Mansoor, Husham Y.; Al-Dabbagh, Ali A.

2017-09-01

Diabetic foot is a common complication of diabetes due to changes in blood vessels and nerves, often leads to ulceration and subsequent limb amputation if not treated early. A new diagnostic marker of bacterial infections is procalcitonin. C-reactive protein, Interleukin1β, Interleukin-6 and tumor necrosis factor-α as proinflammatory parameters increased in Diabetic foot infection. We evaluated above parameters in patients with diabetic foot infections in different grades. A total of 130 diabetic patients were enrolled in this case control study between June 2011 and March 2012 in Rizgary, Emergency and Hawler Teaching Hospitals, 90 of them with diabetic foot lesion as a patient group. 40 without foot lesion, as a patient control and 20 individuals as healthy control. Assessment of above parameters in sera of study groups and also bacteriological tests (bacterial isolation and identification) were done. Serum procalcitonin levels significantly increased in patients with diabetic foot with higher Wagner grades (III, IV and V) (0.28 ± 0.04, 0.30 ± 0.07 and 0.60 ± 0.11) respectively (P<0.01), indication for amputation (0.45 ± 0.06) (P<0.01), and polymicrobial infection (0.345 ± 0.043) (P<0.05). The severity of foot ulcer based on Wagner classification system was also associated with circulating levels of C-reactive protein, Interleukin1β, Interleukin-6 and tumor necrosis factor-α (G III, IV and V) (5.36 ± 0.70, 6.38 ± 0.65, and 9.13 ± 0.88), (1.21 ± 0.08, 1.56 ± 0.16 and 2.02 ± 0.07), (23.02 ± 2.98, 36.32 ± 5.75 and 43.36 ± 6.16), and (215.39 ± 16.8, 259.21 ± 40.7 and 398.45 ± 33.4) respectively (P<0.01). A new useful diagnostic parameter in infected diabetic foot patients may be a procalcitonin especially in those with higher Wagner grades and with polymicrobial infection.

Phylogenetic relationships in the mushroom genus Coprinus and dark-spored allies based on sequence data from the nuclear gene coding for the large ribosomal subunit RNA: divergent domains, outgroups, and monophyly.

PubMed

Hopple, J S; Vilgalys, R

1999-10-01

Phylogenetic relationships were investigated in the mushroom genus Coprinus based on sequence data from the nuclear encoded large-subunit rDNA gene. Forty-seven species of Coprinus and 19 additional species from the families Coprinaceae, Strophariaceae, Bolbitiaceae, Agaricaceae, Podaxaceae, and Montagneaceae were studied. A total of 1360 sites was sequenced across seven divergent domains and intervening sequences. A total of 302 phylogenetically informative characters was found. Ninety-eight percent of the average divergence between taxa was located within the divergent domains, with domains D2 and D8 being most divergent and domains D7 and D10 the least divergent. An empirical test of phylogenetic signal among divergent domains also showed that domains D2 and D3 had the lowest levels of homoplasy. Two equally most parsimonious trees were resolved using Wagner parsimony. A character-state weighted analysis produced 12 equally most parsimonious trees similar to those generated by Wagner parsimony. Phylogenetic analyses employing topological constraints suggest that none of the major taxonomic systems proposed for subgeneric classification is able to completely reflect phylogenetic relationships in Coprinus. A strict consensus integration of the two Wagner trees demonstrates the problematic nature of choosing outgroups within dark-spored mushrooms. The genus Coprinus is found to be polyphyletic and is separated into three distinct clades. Most Coprinus taxa belong to the first two clades, which together form a larger monophyletic group with Lacrymaria and Psathyrella in basal positions. A third clade contains members of Coprinus section Comati as well as the genus Leucocoprinus, Podaxis pistillaris, Montagnea arenaria, and Agaricus pocillator. This third clade is separated from the other species of Coprinus by members of the families Strophariaceae and Bolbitiaceae and the genus Panaeolus. Copyright 1999 Academic Press.

Structural, magnetic and spectral properties of Gd and Dy co-doped dielectrically modified Co-Ni (Ni0.4Co0.6Fe2O4) ferrites

NASA Astrophysics Data System (ADS)

Ditta, Allah; Khan, Muhammad Azhar; Junaid, Muhammad; Khalil, R. M. Arif; Warsi, Muhammad Farooq

2017-02-01

Gadolinium (Gd) and Dysprosium (Dy) co-doped Ni-Co (Ni0.4Co0.6Fe2O4) ferrites were prepared by micro-emulsion route. X-ray diffraction (XRD) analysis indicated the development of cubic spinel structure. The lattice parameter and X-ray density were found to increase from 8.24 to 8.31 Å and 5.57 to 5.91 (gm/cm3) respectively as the Gd-Dy contents increased in nickel-cobalt ferrites. The crystallite size calculated from the Scherrer's formula exhibited the formation of nanocrystalline ferrites (13-26 nm). Two foremost absorption bands observed in FTIR spectra within 400 cm-1 (υ2) to 600 cm-1 (υ1) which correspond to stretching vibrations of tetrahedral and octahedral complexes respectively. The dielectric constant (ε) and dielectric loss (tanδ) were decreased by the optimization of frequency and abrupt decrease in the low frequency region and higher values in the high frequency region were observed. The dielectric dispersion was due to rapid decrease of dielectric constant in the low frequency region. This variation of dielectric dispersion was explicated in the light of space charge polarization model of Maxwell-Wagner. The dielectric loss occurs in these ferrites due to electron hopping and defects in the dipoles. The electron hopping was possible at low frequency range but at higher frequency the dielectric loss was decreased with the decrease of electron hopping. Magnetic properties were observed by measuring M-H loops. Due to low dielectric loss and dielectric constant these materials were appropriate in the fabrication of switching and memory storage devices.

Strong interfacial polarization in graphene/ZnO nanocomposite for high-performance miniscule permittivity materials

NASA Astrophysics Data System (ADS)

Shoeb, Mohd; Mobin, Mohammad; Naqvi, Alim H.

2018-05-01

In the 21st century evolution of microelectronics industries, consumptions of integrated circuits (IC's) increases, so the demand of miniscule permittivity (MP) material with minimum loss factor arises in the electronics industries. Graphene embedded ZnO Nanoparticle (Gr/ZnO NCs) is synthesized and studied their dielectric properties In the studied frequency range 75 kHz to 7 MHz. In the sample Gr/ZnO NCs dielectric permittivity decrease gradually from 7.2 to 6.7 as the frequency increases, whereas dielectric permittivity of ZnO NPs shows also diminishing behavior in the range 75 to 20 as the frequency increases. In the Gr/ZnO NCs, Maxwell-Wagner polarization model explains strong interfacial polarization to presence of functionalization group and lattice defects on graphene sheet.

Light and dark matter in the universe

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

This simulation follows the growth of density perturbations in both gas and dark matter components in a volume 1 billion light years on a side beginning shortly after the Big Bang and evolved to half the present age of the universe. It calculates the gravitational clumping of intergalactic gas and dark matter modeled using a computational grid of 64 billion cells and 64 billion dark matter particles. The simulation uses a computational grid of 4096^3 cells and took over 4,000,000 CPU hours to complete. Read more: http://www.anl.gov/Media_Center/News/2010/news100104.html. Credits: Science: Michael L. Norman, Robert Harkness, Pascal Paschos and Rick Wagner Visualization:more » Mark Herald, Joseph A. Insley, Eric C. Olson and Michael E. Papka« less

Anisotropic Ripple Deformation in Phosphorene.

PubMed

Kou, Liangzhi; Ma, Yandong; Smith, Sean C; Chen, Changfeng

2015-05-07

Two-dimensional materials tend to become crumpled according to the Mermin-Wagner theorem, and the resulting ripple deformation may significantly influence electronic properties as observed in graphene and MoS2. Here, we unveil by first-principles calculations a new, highly anisotropic ripple pattern in phosphorene, a monolayer black phosphorus, where compression-induced ripple deformation occurs only along the zigzag direction in the strain range up to 10%, but not the armchair direction. This direction-selective ripple deformation mode in phosphorene stems from its puckered structure with coupled hinge-like bonding configurations and the resulting anisotropic Poisson ratio. We also construct an analytical model using classical elasticity theory for ripple deformation in phosphorene under arbitrary strain. The present results offer new insights into the mechanisms governing the structural and electronic properties of phosphorene crucial to its device applications.

A Quantitative Review of the Relationship between Person-Organization Fit and Behavioral Outcomes

ERIC Educational Resources Information Center

Hoffman, Brian J.; Woehr, David J.

2006-01-01

This paper extends the meta-analysis of Verquer, Beehr, and Wagner by providing a meta-analytic review of the relationship between person-organization fit (PO fit) and behavioral criteria (job performance, organizational citizenship behaviors, and turnover). Results indicate that PO fit is weakly to moderately related to each of these outcome…

78 FR 7855 - Qualification of Drivers; Exemption Applications; Diabetes Mellitus

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-04

... Dennis W. Baseman (MN), Kathy L. Brown (IN), Charles K. Eudy (TX), John C. Evans (IL), Thomas J. Ferry (NJ), Jeffrey C. Hanson (TX), Jeffrey D. Kivett (IN), Bryan M. Laffin (MD), Peter W. Prime (MA), David E. Wagner (PA), Daniel V. Williamson (MN), and Charles F. Woodford (WI) from the ITDM requirement in...

Taking a Social Turn for the Worse: The Language Socialization Paradigm for Second Language Acquisition

ERIC Educational Resources Information Center

Gregg, Kevin R.

2006-01-01

In recent years, a number of researchers in the field of second language acquisition have voiced discontent regarding the tendency of second language acquisition (SLA) research to be conducted within a framework of cognitive science (Firth and Wagner, 1997; Atkinson, 2002; Johnson, 2004). Watson-Gegeo (2004) expresses this same discontent, and…

78 FR 8584 - Comment Request for Information Collection for Work Application/Job Order Recordkeeping...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-06

... Collection for Work Application/ Job Order Recordkeeping, Extension Without Revisions AGENCY: Employment and... extension without changes of the data retention required by 20 CFR 652.8(d)(5) of the Wagner-Peyser Act, which requires each state to retain applications and job orders for a minimum of one year. The current...

75 FR 450 - Comment Request for Information Collection for Work Application/Job Order Recordkeeping (OMB 1205...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-01-05

... Collection for Work Application/ Job Order Recordkeeping (OMB 1205-0001), Extension Without Revisions AGENCY... collection of data concerning the extension without changes of the data retention required by 20 CFR 652.8(d)(5) of the Wagner-Peyser Act, which requires each state to retain applications and job orders for a...

78 FR 42090 - Submission for OMB Review; 30-day Comment Request; NIH Office of Intramural Training & Education...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-15

... 100.0 1.0 1.0 100.00 (CCSEP) Technical Training Program (PBT) 115.0 1.0 1.0 115.00 Graduate...; 30-day Comment Request; NIH Office of Intramural Training & Education Application SUMMARY: Under the... Wagner; Director of Admissions & Registrar; Office of Intramural Training & Education; National...

78 FR 28643 - Program Year (PY) 2013 Workforce Investment Act (WIA) Allotments; PY 2013 Wagner-Peyser Act Final...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-15

... Virgin Islands) was published in the Federal Register at 65 FR 8236 (February 17, 2000) which included... of Northern Marianas Islands, and Virgin Islands. The Department updated data for Palau from Palau's... incentives for ES offices, services for groups with special needs, and for the extra costs of exemplary...

76 FR 42735 - Comment Request for Information Collection for State Integrated Workforce Plan Requirements for...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-19

... can be provided in the desired format; the reporting burden (time and financial resources) is... for Submission of the Strategic State Plan for title I of the Workforce Investment Act of 1998 (WIA...'' strategic plan for title I of the Workforce Investment Act of 1998 and the Wagner-Peyser Act (WIA Section...

7. Photographic copy of construction drawing, dated October 28, 1964, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. Photographic copy of construction drawing, dated October 28, 1964, Edward M. Newman Architect, Detroit, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. EXISTING AND PROPOSED ELEVATIONS, SHEET 3 OF 6, DRAWING NO. SLF-740-085. - Selfridge Field, Building No. 178, East side of Wagner Street south of George Avenue, Mount Clemens, Macomb County, MI

Development of a New Critical Thinking Test Using Item Response Theory

ERIC Educational Resources Information Center

Wagner, Teresa A.; Harvey, Robert J.

2006-01-01

The authors describe the initial development of the Wagner Assessment Test (WAT), an instrument designed to assess critical thinking, using the 5-faceted view popularized by the Watson-Glaser Critical Thinking Appraisal (WGCTA; G. B. Watson & E. M. Glaser, 1980). The WAT was designed to reduce the degree of successful guessing relative to the…

Wallace Stevens: A Collection of Critical Essays. Twentieth Century Views Series.

ERIC Educational Resources Information Center

Borroff, Marie, Ed.

One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Marie Borroff, Wallace Stevens, Joseph N. Riddle, Hi Simons, Sister M. Bernetta Quinn, C. Roland Wagner, Harold Bloom, Ralph J. Mills, Jr., Roy Harvey Pearce, Louis L. Martz, Morton Dauwen Zabel, and Northrop Frye--all…

76 FR 40342 - Procurement List; Proposed Additions and Deletions

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-08

... accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in connection with the products... the Procurement List for production by the nonprofit agencies listed: Products NSN: M.R. 1001--Towels, Dish, Kitchen Gourmet, Black, 2pc. NSN: M.R. 1002--Towels, Dish, Kitchen Gourmet, Red, 2pc. NSN: M.R...

15. Photographic copy of construction drawing, dated June 7, 1933, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

15. Photographic copy of construction drawing, dated June 7, 1933, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-25??, SDO 134 F4 1B (ELEVATIONS) - Selfridge Field, Building Nos. 242, 247, 250, 242 & 247 Birch Street & 250 Wagner Street, Mount Clemens, Macomb County, MI

12. Photographic copy of construction drawing, dated June 7, 1933, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. Photographic copy of construction drawing, dated June 7, 1933, Construction Division Office of the Quartermaster General, in possession of Selfridge Base Museum, Mt. Clemens, Michigan. PLAN 625-2517, SDO 186 F41 (FLOOR PLAN) - Selfridge Field, Building Nos. 248, 252 & 254, 248 Birch Street & 252, 254 Wagner Street, Mount Clemens, Macomb County, MI

Tacit Social Knowledge Acquisition as a Function of General Intelligence and the Ability To Learn and Utilize Uncertain Social Feedback and Contingencies

DTIC Science & Technology

1992-12-01

factory; Berry and Irvine (1986) document bricolage , which is roughly equivalent to handyman skills, within primitive cultures. Both these studies are...decoding of nonverbal cues. Intelligence, ;J, 263-287. Berry, J. W., & Irvine, S. H. (1986). Bricolage : Savages do it daily. In Sternberg, R., & Wagner

"We're Learning a Lot of New Words": Encountering New L2 Vocabulary outside of Class

ERIC Educational Resources Information Center

Eskildsen, Soren Wind

2018-01-01

This article presents empirical evidence that the Interaction Hypothesis (Long, 1996), especially key concepts in Negotiation for Meaning, bears little relevance for language learning outside of class ("in the wild," cf. Hellermann, Eskildsen, et al., 2018; Wagner, 2015) but seems to be epiphenomenal to experimentally elicited data.…

Listening Pays off: "The SALON" @ "Marlborough"

ERIC Educational Resources Information Center

Ercegovac, Zorana

2007-01-01

Marlborough School, which was founded in 1889 in Los Angeles, is an independent college preparatory day school for young women. When the author arrived in Marlborough School in 2005, she found that the school was an exciting place to learn but the library was not. However, head of school Barbara Wagner described her vision of the school's future…

College? No Thanks, Mom and Dad

ERIC Educational Resources Information Center

Ruark, Jennifer

2009-01-01

Robin Wagner, director of the library at Gettysburg College, remembers a few years ago when her son, Ben, was a high-school senior. While all his friends were talking about their college plans, Ben, who had been accepted to the University of Pittsburgh's engineering program, refused to return the offer card. On the band-room whiteboard where kids…

Physics-Based Simulations to Enable Game-Changing Novel Explosive and Protective Technologies

DTIC Science & Technology

2013-09-25

PhD 2010) - Currently employed at Innovative Scheduling Inc. 2) Yue Ling (PhD 2010) - Currently Research Scientist at Université Pierre et Marie Curie...dispersal of solid particles. APS DFD Gallery of Fluid Motion (2011). 4. J. L. Wagner, S. J. Beresh, S. P. Kearney, W. M. Trott , J. N. Castaneda, B

Validating the Thinking Styles Inventory-Revised II among Chinese University Students with Hearing Impairment through Test Accommodations

ERIC Educational Resources Information Center

Cheng, Sanyin; Zhang, Li-Fang

2014-01-01

The present study pioneered in adopting test accommodations to validate the Thinking Styles Inventory-Revised II (TSI-R2; Sternberg, Wagner, & Zhang, 2007) among Chinese university students with hearing impairment. A series of three studies were conducted that drew their samples from the same two universities, in which accommodating test…

Independent Research and Independent Exploratory Development Annual Report Fiscal Year 1975

DTIC Science & Technology

1975-09-01

and Coding Study.(Z?80) ................................... ......... .................... 40 Optical Cover CMMUnicallor’s Using Laser Transceiverst...Using Auger Spectroscopy and PUBLICATIONS Additional Advanced Analytical Techniques," Wagner, N. K., "Auger Electron Spectroscopy NELC Technical Note 2904...K.. "Analysis of Microelectronic Materials Using Auger Spectroscopy and Additional Advanced Analytical Techniques," Contact: Proceedings of the

Classroom Notes Plus: A Quarterly of Teaching Ideas, 2005-06

ERIC Educational Resources Information Center

National Council of Teachers of English, 2006

2006-01-01

This document is a compilation of the four issues in the 23rd volume of "Classroom Notes Plus." Each issue of "Classroom Notes Plus" contains descriptions of original, unpublished teaching practices, and of adapted ideas. The August 2005 (v23 n1) issue includes: Sharing Responses to Literature via Exit Slips (Barb Wagner); Letting Learners Teach…

Late Quaternary palaeoenvironmental reconstruction from Lake Ohrid using stable isotopes

NASA Astrophysics Data System (ADS)

Lacey, Jack H.; Leng, Melanie J.; Francke, Alexander; Vogel, Hendrik; Zanchetta, Giovanni; Wagner, Bernd

2016-04-01

Lake Ohrid is a large, deep lake located on the Balkan Peninsula at the border between Macedonia and Albania, and is considered the oldest extant lake in Europe. An International Continental scientific Drilling Program (ICDP) deep drilling campaign was carried out in 2013 as part of the interdisciplinary Scientific Collaboration On Past Speciation Conditions in Lake Ohrid (SCOPSCO) project. Over 1500 m of sediment were recovered from six coring locations at the main target site in the central basin, where the maximum drill depth reached 569 m below the lake floor. Initial results indicate continuous lacustrine conditions over the past >1.2 Ma (Wagner et al., 2014). Here, we present oxygen and carbon isotope data (δ18O and δ13C) from carbonate from the upper 248 m of the SCOPSCO succession, which covers the last 640 ka, spanning marine isotope stages 15-1, according to an age model based on tephra and orbital tuning (Francke et al., 2015). Modern monitoring data show Lake Ohrid to be an evaporative system, where variations in δ18O of endogenic carbonate are primarily a function of changes in water balance, and δ13C largely reflects fluctuations in the amount of soil-derived CO2 and organic matter recycling. Our results indicate a trend from wetter to drier conditions through the Holocene, which is consistent with regional and hemispheric processes related to changes in insolation and progressive aridification. Over the last 640 ka, relatively stable climate conditions are inferred before ca. 450 ka, a transition to a wetter climate between ca. 400-250 ka, and a trend to drier climate after ca. 250 ka. Higher frequency, multi-millennial-scale oscillations observed during warm stages are most likely associated with regional climate change as a function of orbital forcing. This record is one of the most extensive and highly-resolved continental isotope records available, and emphasises the potential of Lake Ohrid as a valuable archive of long-term palaeoclimate and palaeoenvironmental change in the northern Mediterranean region. Francke, A., Wagner, B., Just, J., Leicher, N., Gromig, R., Baumgarten, H., Vogel, H., Lacey, J. H., Sadori, L., Wonik, T., Leng, M. J., Zanchetta, G., Sulpizio, R., and Giaccio, B. (2015). Sedimentological processes and environmental variability at Lake Ohrid (Macedonia, Albania) between 640 ka and present day. Biogeosciences Discussions 12, 15111-15156. Wagner, B., Wilke, T., Krastel, S., Zanchetta, G., Sulpizio, R., Reicherter, K., Leng, M. J., Grazhdani, A., Trajanovski, S., Francke, A., Lindhorst, K., Levkov, Z., Cvetkoska, A., Reed, J. M., Zhang, X., Lacey, J. H., Wonik, T., Baumgarten, H., and Vogel, H. (2014). The SCOPSCO drilling project recovers more than 1.2 million years of history from Lake Ohrid. Scientific Drilling 17, 19-29.

Disappearance of dielectric anomaly in spite of presence of structural phase transition in reduced BaTiO3: Effect of defect states within the bandgap

NASA Astrophysics Data System (ADS)

Sagdeo, Archna; Nagwanshi, Anjali; Pokhriyal, Preeti; Sinha, A. K.; Rajput, Parasmani; Mishra, Vikash; Sagdeo, P. R.

2018-04-01

We report the structural, optical, ferroelectric, and dielectric properties of reduced BaTiO3 samples. For this purpose, oxygen vacancies in BaTiO3 are created by heating these samples with a Ti metal in a vacuum environment at different temperatures. It is observed that with an increase in oxygen deficiencies, the c/a ratio decreases as compared to that of the oxygen treated sample. The ferroelectric properties of the oxygen deficient samples are visibly different as compared to those of the oxygen treated sample. The disappearance of the P-E loop and the anomaly in the temperature variation of the dielectric constant have been observed; however, the structural phase transition corresponding to ferroelectric phase transitions still persists. Thus, it appears that the anomaly in dielectric data and the presence of the P-E loop are getting masked possibly by the Maxwell-Wagner effect. The presence of Ti+3 states in the prepared samples has been confirmed by X-ray absorption near edge structure measurements. The Kubelka-Munk optical absorption shows the presence of extra states below fundamental transition, indicating the emergence of new electronic states within the bandgap, which might be due to Ti+3 states. These new states appear at different energy positions, and with different intensities for different samples, which are reduced in the presence of Ti. These new states within the bandgap appear to modify the electronic structure, thereby reducing the overall bandgap, and hence, they seem to modify the ferroelectric and dielectric properties of the samples. Our results may be treated as experimental evidence for theoretically proposed defect states in oxygen deficient or reduced BaTiO3.

Selective Oxidation of a 0.1C-6Mn-2Si Third Generation Advanced High-Strength Steel During Dew-Point Controlled Annealing

NASA Astrophysics Data System (ADS)

Pourmajidian, Maedeh; McDermid, Joseph R.

2018-03-01

The present study investigates the selective oxidation of a 0.1C-6Mn-2Si medium-Mn advanced high-strength steel during austenization annealing heat treatments as a function of process atmosphere oxygen partial pressure and annealing time. It was determined that the surface oxide growth kinetics followed a parabolic rate law with the minimum rate belonging to the lowest oxygen partial pressure atmosphere at a dew point of 223 K (- 50 °C). The chemistry of the surface and subsurface oxides was studied using STEM + EELS on the sample cross sections, and it was found that the surface oxides formed under the 223 K (- 50 °C) dew-point atmosphere consisted of a layered configuration of SiO2, MnSiO3, and MnO, while in the case of the higher pO2 process atmospheres, only MnO was detected at the surface. Consistent with the Wagner calculations, it was shown that the transition to internal oxidation for Mn occurred under the 243 K (- 30 °C) and 278 K (+ 5 °C) dew-point atmospheres. However, the predictions of the external to internal oxidation for Si using the Wagner model did not correlate well with the experimental findings nor did the predictions of the Mataigne et al. model for multi-element alloys. Investigations of the internal oxide network at the grain boundaries revealed a multilayer oxide structure composed of amorphous SiO2 and crystalline MnSiO3, respectively, at the oxide core and outer shell. A mechanism for the formation of the oxide morphologies observed, based on kinetic and thermodynamic factors, was proposed. It is expected that only the fine and nodule-like MnO oxides formed on the surface of the samples annealed under the 278 K (+ 5 °C) dew-point process atmosphere for 60 and 120 seconds are sufficiently thin and of the desired dispersed morphology to promote reactive wetting by the molten galvanizing bath.

77 FR 53195 - H.A. Wagner LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-31

... link to log on and submit the intervention or protests. Persons unable to file electronically should... file with the Federal Energy Regulatory Commission, 888 First Street NE., Washington, DC 20426, in... service, persons with Internet access who will eFile a document and/or be listed as a contact for an...

The Role of the United States Employment Service in a Changing Economy. Studies in Employment and Unemployment.

ERIC Educational Resources Information Center

Haber, William; Kruger, Daniel

This monograph examines the developments which have influenced the United States Employment Service during the 30 years of its history, since the Wagner-Peyser Act of 1933. The major social and economic developments, the enabling legislation, and the issues and problems regarding the proper role of that service are discussed. Some of the…

L2 Teaching in the Wild: A Closer Look at Correction and Explanation Practices in Everyday L2 Interaction

ERIC Educational Resources Information Center

Theodorsdottor, Gudrun

2018-01-01

This article argues for a reconceptualization of the concept of "corrective feedback" for the investigation of correction practices in everyday second language (L2) interaction ("in the wild"). Expanding the dataset for L2 research as suggested by Firth and Wagner (1997) to include interactions from the wild has consequences…

Reform of Budgeting for Acquisition: Lessons from Private Sector Capital Budgeting for the Department of Defense

DTIC Science & Technology

2006-09-30

President Provost The Acquisition Chair, Graduate School of Business & Public Policy, Naval Postgraduate School supported the funding of the...Jerry L. McCaffery, Professor Graduate School of Business & Public Policy ________________________________ Lawrence R. Jones, Professor, Wagner...Chair Graduate School of Business & Public Policy Reviewed by: ________________________________ Robert N. Beck Dean, Graduate School of Business

Sleep Problems of Parents of Typically Developing Children and Parents of Children with Autism

ERIC Educational Resources Information Center

Lopez-Wagner, Muriel C.; Hoffman, Charles D.; Sweeney, Dwight P.; Hodge, Danelle; Gilliam, James E.

2008-01-01

Few researchers have investigated the relation of children's sleep problems to their parents' sleep problems. Children with autism have been reported to evidence greater sleep problems than do typically developing children (C. D. Hoffman, D. P. Sweeney, J. E. Gilliam, & M. C. Lopez-Wagner, 2006; P. G. William, L. L. Sears, & A. Allard, 2004). In…

75 FR 69638 - Procurement List; Additions and Deletion

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-15

... regulatory alternatives which would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46... Size M-R. NSN: 8415-01-538-8621--Undershirt, Midweight Cold Weather, Gen III Size L. NSN: 8415-01-538... Size S-L. NSN: 8415-01-546-0305--Undershirt, Midweight Cold Weather, Gen III Size M-L. NSN: 8415-01-546...

Handling of computational in vitro/in vivo correlation problems by Microsoft Excel: I. Principles and some general algorithms.

PubMed

Langenbucher, Frieder

2002-01-01

Most computations in the field of in vitro/in vivo correlations can be handled directly by Excel worksheets, without the need for specialized software. Following a summary of Excel features, applications are illustrated for numerical computation of AUC and Mean, Wagner-Nelson and Loo-Riegelman absorption plots, and polyexponential curve fitting.

Efficacy of a Commercial Bacterin in Protecting Strain 13 Guinea Pigs against Bordetella bronchiseptica Pneumonia.

DTIC Science & Technology

1986-12-01

colonies have continued to occur (2-4). In addition to bronchopneumonia, it also induces abortion, still births, infertility, and otitis media (5-7...New York, NY 1976; 121-35. 7. Wagner JE, Owens DR, Kusewitt DF, et al. Otitis media of guinea pigs. Lab Anim Sci 1976; 26:902-7. 8. Shimizu T

Privacy-Enhancing Technologies for the Internet

DTIC Science & Technology

1997-01-01

http://www.communities.com/paper/swamp.html 7 David Chaum , ``Untraceable Electronic Mail, Return addresses, and Digital Pseudonyms,’’ Communications of...the ACM, February 1981, vol. 24 no. 2. http://www.eskimo.com/~weidai/mix-net.txt 8 David Chaum , ``Blind Signatures for Untraceable Payments...Privacy-enhancing technologies for the Internet Ian Goldberg David Wagner Eric Brewer University of California, Berkeley {iang,daw,brewer

Phonological Processing in Children with Specific Reading Disorder versus Typical Learners: Factor Structure and Measurement Invariance in a Transparent Orthography

ERIC Educational Resources Information Center

Brandenburg, Janin; Klesczewski, Julia; Schuchardt, Kirsten; Fischbach, Anne; Büttner, Gerhard; Hasselhorn, Marcus

2017-01-01

Although children with specific reading disorder (RD) have often been compared to typically achieving children on various phonological processing tasks, to our knowledge no study so far has examined whether the structure of phonological processing applies to both groups of children alike. According to Wagner and Torgesen (1987), phonological…

Relationships among Mindset, Self-Efficacy and Tony Wagner's Seven Survival Skills in the Elementary School Classroom

ERIC Educational Resources Information Center

Nasto, Richard Adam

2017-01-01

Teacher mindset and self-efficacy are a topic of much research. However, specific research is needed in areas pertaining to teacher self-efficacy, mindset and their comprehensive understandings of specific skill sets and concepts. In this study, the researcher has investigated how the associations between a teacher's self-efficacy (high or low)…

Wrinkling of reinforced plates subjected to shear stresses

NASA Technical Reports Server (NTRS)

Seydel, Edgar

1931-01-01

An analysis is made here of the problem of long plates with transverse stiffeners subject to shear. A typical example would be a long Wagner beam. The shear stress is calculated at which the web wrinkles and shear stress becomes a maximum. The equation is solved for both a condition of free support and rigidity of support on the edges.

5 CFR Appendix A to Subpart F of... - Standards for a Merit System of Personnel Administration

Code of Federal Regulations, 2010 CFR

2010-01-01

...). Employment Security (Unemployment Insurance and Employment Services), Social Security Act (Title III), as amended by the Social Security Act Amendments of 1939, Section 301, on August 10, 1939, and the Wagner....C. 49d(b). Grants to States for Old-Age Assistance for the Aged (Title I of the Social Security Act...

5 CFR Appendix A to Subpart F of... - Standards for a Merit System of Personnel Administration

Code of Federal Regulations, 2011 CFR

2011-01-01

...). Employment Security (Unemployment Insurance and Employment Services), Social Security Act (Title III), as amended by the Social Security Act Amendments of 1939, Section 301, on August 10, 1939, and the Wagner....C. 49d(b). Grants to States for Old-Age Assistance for the Aged (Title I of the Social Security Act...

Opera in the Foreign Language Classroom: Learning German with Mozart, Wagner, Weber, and Johann Strauss

ERIC Educational Resources Information Center

Heinz, Solveig M.

2010-01-01

Content-based instruction (CBI) has been part of the foreign language curriculum for many years at US colleges, leading to courses that combine language instruction with specific content domains, such as film, literature, politics, sports and many others. This article presents a rather unusual choice of content domain for a second-year language…

3. Photocopy of a broadside (approximately 8' x 10 1/2') ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. Photocopy of a broadside (approximately 8' x 10 1/2') from 1845-47, issued by Wagner & McGuigan's Lith. (Original in the Chester County Historical Society, West Chester, Pennsylvania) Photocopy taken by Ned Goode, May 1959 LITHOGRAPH OF TAVERN COMPLEX CIRCA 1845 - Yellow Springs Tavern, Yellow Springs & Art School Roads (West Pikeland Township), Chester Springs, Chester County, PA

Student-Teachers' Perceptions of Second Language Teaching in the CBL Program: Identity Construction and Development

ERIC Educational Resources Information Center

Yeh, Shu-Fen

2017-01-01

In recent times, researchers of second language learning have suggested that second language learning is not simply a cognitive or linguistic issue, but is also a social, political, and cultural one (e.g., Atkinson, 2002; Firth & Wagner, 1997; Larsen-Freeman, 2007). Research on student teachers' identity (e.g., Atkinson, 2004; Day &…

DOE Office of Scientific and Technical Information (OSTI.GOV)

Raj, C. Justin, E-mail: cjustinraj@gmail.com; Paramesh, G.; Prakash, B. Shri

Highlights: • Mg doped zinc oxide ceramics were fabricated by co-precipitation/solid state reaction. • MZO ceramics shown a Debye type and colossal dielectric response. • Physical absorption of atmospheric water vapor contributes these high permittivity. • The fabricated ceramic shows Maxwell–Wagner type of relaxation. - Abstract: Zn{sub 1−x}Mg{sub x}O ( ≤ x ≤ 0.1) ceramics were fabricated by conventional solid-state reaction of co-precipitated zinc oxide and magnesium hydroxide nanoparticles. Structural and morphological properties of the fabricated ceramics were studied using X-ray diffraction and scanning electron microscopic analysis. The dielectric measurements of the ceramics were carried out as a function ofmore » frequency and temperature respectively. Interestingly, Mg doped ZnO (MZO) samples exhibited colossal dielectric response (∼1 × 10{sup 4} at 1 kHz) with Debye like relaxation. The detailed dielectric studies and thermal analyses showed that the unusual dielectric response of the samples were originated from the defected grain and grain boundary (GB) conductivity relaxations due to the absorbed atmospheric water vapor (moisture). Impedance spectroscopy was employed to determine the defected grain and GB resistances, capacitances and which supported Maxwell–Wagner type relaxation phenomena.« less

Small polaronic hole hopping mechanism and Maxwell-Wagner relaxation in NdFeO3

NASA Astrophysics Data System (ADS)

Ahmad, I.; Akhtar, M. J.; Younas, M.; Siddique, M.; Hasan, M. M.

2012-10-01

In the modern micro-electronics, transition metal oxides due to their colossal values of dielectric permittivity possess huge potential for the development of capacitive energy storage devices. In the present work, the dielectric permittivity and the effects of temperature and frequency on the electrical transport properties of polycrystalline NdFeO3, prepared by solid state reaction method, are discussed. Room temperature Mossbauer spectrum confirms the phase purity, octahedral environment for Fe ion, and high spin state of Fe3+ ion. From the impedance spectroscopic measurements, three relaxation processes are observed, which are related to grains, grain boundaries (gbs), and electrode-semiconductor contact in the measured temperature and frequency ranges. Decrease in resistances and relaxation times of the grains and grain boundaries with temperature confirms the involvement of thermally activated conduction mechanisms. Same type of charge carriers (i.e., small polaron hole hopping) have been found responsible for conduction and relaxation processes through the grain and grain boundaries. The huge value of the dielectric constant (˜8 × 103) at high temperature and low frequency is correlated to the Maxwell-Wagner relaxation due to electrode-sample contact.

Relaxor-like ferroelectric behaviour favoured by short-range B-site ordering in 10% Ba{sup 2+} substituted MgFe{sub 2}O{sub 4}

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chithra Lekha, P.; Ramesh, G.; Revathi, V.

2014-05-01

Graphical abstract: - Highlights: • Mechanism driving polarization in MgFe{sub 2}O{sub 4} is the Maxwell–Wagner polarization. • But Raman studies confirm the existence of local P4{sub 1}22/P4{sub 3}22 symmetry in MgFe{sub 2}O{sub 4}. • Ba{sup 2+} substitution increases ferroelectric ordering, ΔT{sub m} span, and masks electronic contribution. - Abstract: Using the molten salt method, pristine and Ba{sup 2+} substituted MgFe{sub 2}O{sub 4} are prepared. The relaxor-like behaviour observed in the dielectric dispersion indicates the existence of B-site short-range ordering with the local P4{sub 1}22/P4{sub 3}22 symmetry which is confirmed by the Raman spectroscopy. The paper further analyses the origin ofmore » polarization using Maxwell–Wagner fit and Nyquist plot. This work suggests a possible way to increase the relaxor-like ferroelectric ordering, larger span of relaxation temperature (ΔT{sub m}) and the effective masking of electronic contribution by the substitution of Ba{sup 2+} ion.« less

Unsteady flow of a thixotropic or antithixotropic fluid

NASA Astrophysics Data System (ADS)

Wilson, Stephen; Pritchard, David; Croudace, Andrew

2016-11-01

We describe a general formulation of the governing equations for the unsteady, axisymmetric flow of a thixotropic or antithixotropic fluid in a channel of slowly varying width. These equations are equivalent to the equations of classical lubrication theory for a Newtonian fluid, but incorporate the evolving microstructure of the fluid, described in terms of a scalar structure parameter; they extend and generalise the corresponding results for steady, two-dimensional flow obtained recently by Pritchard, Wilson and McArdle. The magnitudes of temporal and advective thixotropic effects are gauged by naturally defined temporal and advective Deborah numbers. To gain insight into the complicated behaviour of the flow, we explore regimes in which these thixotropic effects first appear at first order in powers of the small aspect ratio. We present illustrative analytical and semi-analytical solutions for particular choices of the constitutive and kinetic laws, including a purely viscous Moore-Mewis-Wagner model and a regularised viscoplastic Hou\\vska model. Partly supported by a United Kingdom EPSRC DTA Studentship and Leverhulme Trust Research Fellowship RF-2013-355.

A comparator-hypothesis account of biased contingency detection.

PubMed

Vadillo, Miguel A; Barberia, Itxaso

2018-02-12

Our ability to detect statistical dependencies between different events in the environment is strongly biased by the number of coincidences between them. Even when there is no true covariation between a cue and an outcome, if the marginal probability of either of them is high, people tend to perceive some degree of statistical contingency between both events. The present paper explores the ability of the Comparator Hypothesis to explain the general pattern of results observed in this literature. Our simulations show that this model can account for the biasing effects of the marginal probabilities of cues and outcomes. Furthermore, the overall fit of the Comparator Hypothesis to a sample of experimental conditions from previous studies is comparable to that of the popular Rescorla-Wagner model. These results should encourage researchers to further explore and put to the test the predictions of the Comparator Hypothesis in the domain of biased contingency detection. Copyright © 2018 Elsevier B.V. All rights reserved.

The Lake Ohrid Drilling Project: some initial interpretations of stable isotope data through the last 15 Marine Isotope Stages

NASA Astrophysics Data System (ADS)

Leng, Melanie; Lacey, Jack; Francke, Alexander; Wagner, Bernd; Zanchetta, Giovanni

2015-04-01

The SCOPSCO (Scientific Collaboration on Past Speciation Conditions in Lake Ohrid) project is an international research initiative to study the influence of major geological/environmental events on the biologic evolution of taxa. The target site for this study is Lake Ohrid, which is considered to be the oldest lake with continuous existence in Europe and which has more than 200 endemic species. The recovery of long sediment successions from Lake Ohrid is the basis for obtaining more precise information about the age and origin of the lake, and about the climatic and environmental history of the region including the history of Italian volcanic eruptions. The main SCOPSCO drilling campaign was carried out in 2013, and here we describe data from a 569 m core taken from centre of the lake. Initial data from borehole logging, core logging and geochemistry indicate that the sediment succession from this site covers more than 1.2 million years of Earth's history. Total carbon (TC) and Total Inorganic Carbon (TIC) content show that the amount of TIC is a proxy for short-term and long-term climate change (Vogel et al., 2010; Wagner et al., 2010). TIC is high during interglacials and primarily originates from calcite precipitated in the spring-summer in the epilimnion, when photoautotropic organisms assimilate CO2 utilising the Ca and bicarbonate from the karstic springs. During the glacials, carbonate is almost absent except from discrete siderite layers. TOC is very low throughout both the glacial and interglacial periods and reflects the oligotrophic conditions in the lake. The oxygen and carbon isotope composition of the endogenic carbonate has been shown to be a function of the balance between freshwater input by rivers and springs and evaporation of the lake water (Leng et al., 2010). Variations both within and between interglacials show climate variability including periods of exceptional aridity and potentially very low lake levels. These early findings suggest that the record from Lake Ohrid will substantially improve the knowledge of long-term environmental change in the northern Mediterranean region, which forms the basis to better understand the influence of major environmental events on the evolution of organisms within the lake. Leng, M.J., Baneschi, I., Zanchetta, G., Jex, C.N., Wagner, B., and Vogel, H. 2010. Late Quaternary palaeoenvironmental reconstruction from Lakes Ohrid and Prespa (Macedonia/Albania border) using stable isotopes. Biogeosciences, 7, 3109-3122. Vogel, H., Wagner, B., Zanchetta, G., Sulpizio, R., and Rosén, P.2010. A paleoclimate record with tephrochronological age control fort he last glacial-interglacial cycle from Lake Ohrid, Albania and Macedonia. Journal of Paleolimnology, 44, 295-310. Wagner, B., Vogel, H., Zanchetta, G., and Sulpizio, R. 2010. Environmental change within the Balkan region during the past ca. 50 ka recorded in the sediments from lakes Prespa and Ohrid. Biogeosciences, 7, 3187-3198.

Enhanced dielectric properties of Fe-substituted TiO2 nanoparticles

NASA Astrophysics Data System (ADS)

Ali, T.; Ahmed, Ateeq; Naseem siddique, M.; Tripathi, P.

2018-04-01

We report the structural and dielectric properties Ti1-xFexO2 (0.00 < x < 0.10) nanoparticles (NPs) synthesized by sol-gel method. The synthesized material has been characterized by soft X-ray absorption spectroscopy (SXAS) in order to investigate the fine structure and electronic valence state. SXAS analysis reveals that Fe-ions exist only in 3+ valance state in all the samples. The dielectric properties were studied by the use of LCR impedance spectroscopy. The dielectric constants, dielectric loss and A.C. conductivity have been determined as a function of frequency and composition of iron. At higher frequencies, the materials exhibited high AC Conductivity and low dielectric constant. The above theory could be explained by 'Maxwell Wagner Model' and may provide a new insight to fabricate nanomaterials having possible electrical application.

Dielectric relaxation in AC powder electroluminescent devices

NASA Astrophysics Data System (ADS)

Zhang, Shuai; Su, Haibin; Tan, Chuan Seng; Wong, Terence Kin Shun; Teo, Ronnie Jin Wah

2017-01-01

The dielectric properties of AC powder electroluminescent devices were measured and analyzed using complex impedance spectroscopy to determine the relaxation processes occurring within the devices. The relaxation processes identified were ascribed to the electrode polarization caused by ion accumulation at the electrode/resin interfaces, the Maxwell-Wagner-Sillars effects at the (ZnS or BaTiO3) particle/resin interfaces, and the dipolar reorientation of polymer chains in the resin matrix. Each relaxation process was represented by its corresponding equivalent circuit component. Space charge polarization at the electrodes were represented by a Warburg element, a resistor, and a constant phase element. The resin matrix, ZnS/resin and BaTiO3/resin interfaces could each be modeled by a resistor and a capacitor in parallel. The simulated equivalent circuits for three different printed structures showed good fitting with their experimental impedance results.

Absence of spontaneous magnetic order of lattice spins coupled to itinerant interacting electrons in one and two dimensions.

PubMed

Loss, Daniel; Pedrocchi, Fabio L; Leggett, Anthony J

2011-09-02

We extend the Mermin-Wagner theorem to a system of lattice spins which are spin coupled to itinerant and interacting charge carriers. We use the Bogoliubov inequality to rigorously prove that neither (anti-) ferromagnetic nor helical long-range order is possible in one and two dimensions at any finite temperature. Our proof applies to a wide class of models including any form of electron-electron and single-electron interactions that are independent of spin. In the presence of Rashba or Dresselhaus spin-orbit interactions (SOI) magnetic order is not excluded and intimately connected to equilibrium spin currents. However, in the special case when Rashba and Dresselhaus SOIs are tuned to be equal, magnetic order is excluded again. This opens up a new possibility to control magnetism electrically.

Magnetic and dielectric behavior of chromium substituted Co-Mg ferrite nanoparticles

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jadoun, Priya, E-mail: priya4jadoun@gmail.com; Jyoti,; Prashant, B. L.

The chromium doped Co-Mg ferrite with composition Co{sub 0.5}Mg{sub 0.5}Cr{sub 0.2}Fe{sub 1.8}O{sub 4} has been synthesized using sol-gel auto combustion method. The crystal structure has been analyzed by X-ray diffraction (XRD) technique. XRD pattern reveals the formation of single phase cubic spinel structure. The magnetic measurements show ferromagnetic behavior at room temperature and large coercivity is observed on cooling down the temperature to 20 K. Dielectric constant (ε’) and dielectric loss tangent (tan δ) have been determined at room temperature as a function of frequency in the frequency range 75 kHz to 80 MHz. The decrease in dielectric constant with increasing frequency attributesmore » to Maxwell Wagner model and conduction mechanism in ferrites.« less

Microstructural, optical and electrical properties of LaFe0.5Cr0.5O3 perovskite nanostructures

NASA Astrophysics Data System (ADS)

Ali, S. Asad; Naseem, Swaleha; Khan, Wasi; Sharma, A.; Naqvi, A. H.

2016-05-01

Perovskite nanocrystalline powder of LaFe0.5Cr0.5O3 was synthesized by sol-gel combustion route and characterized by x-ray diffractometer (XRD), scanning electron microscopy (SEM) equipped with EDS, UV-visible and LCR meter at room temperature Rietveld refinement of the XRD data confirms that the sample is in single phase-rhombohedral structure with space group R-3C. SEM micrograph shows clear nanostructure of the sample and EDS ensures the presence of all elements in good stoichiometric. The optical absorption indicates the maximum absorption at 315 nm and optical band gap of 2.94 eV was estimated using Tauc's relation. Dielectric constant (ɛ') and loss were found to decrease with increase in frequencies. The dielectric behavior was explained on the basis of Maxwell-Wagner's two layer model.

Dielectric and magnetic behavior of nanocrystalline Cu{sub 0.4}Co{sub 0.6}Fe{sub 2}O{sub 4} ferrite

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jadoun, Priya, E-mail: priya4jadoun@gmail.com; Sharma, Jyoti; Prashant, B. L.

2016-05-23

The mixed copper cobalt ferrite nanoparticles (Cu{sub 0.4}Co{sub 0.6}Fe{sub 2}O{sub 4}) have been synthesized by sol-gel auto combustion route with aqueous metal nitrates and citric acid as the precursor. The crystal structure has been analyzed by X-Ray diffraction (XRD) method. XRD reveals the formation of single phase cubic spinel structure. The Scanning Electron Microscopy (SEM) is used for morphological studies. The dielectric measurements at room temperature show the decrease in dielectric constant with increasing frequency which is attributed to Maxwell Wagner model and conduction mechanism in ferrites.The magnetic measurements show ferromagnetic behavior at room temperature and large coercivity is observedmore » on cooling down the temperature to 20 K.« less

Anisotropic ripple deformation in phosphorene

DOE PAGES

Kou, Liangzhi; Ma, Yandong; Smith, Sean C.; ...

2015-04-07

Here, two-dimensional materials tend to become crumpled according to the Mermin-Wagner theorem, and the resulting ripple deformation may significantly influence electronic properties as observed in graphene and MoS 2. Here, we unveil by first-principles calculations a new, highly anisotropic ripple pattern in phosphorene, a monolayer black phosphorus, where compression-induced ripple deformation occurs only along the zigzag direction in the strain range up to 10%, but not the armchair direction. This direction-selective ripple deformation mode in phosphorene stems from its puckered structure with coupled hinge-like bonding configurations and the resulting anisotropic Poisson ratio. We also construct an analytical model using classicalmore » elasticity theory for ripple deformation in phosphorene under arbitrary strain. The present results offer new insights into the mechanisms governing the structural and electronic properties of phosphorene crucial to its device applications.« less

Anisotropic ripple deformation in phosphorene

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kou, Liangzhi; Ma, Yandong; Smith, Sean C.

Here, two-dimensional materials tend to become crumpled according to the Mermin-Wagner theorem, and the resulting ripple deformation may significantly influence electronic properties as observed in graphene and MoS 2. Here, we unveil by first-principles calculations a new, highly anisotropic ripple pattern in phosphorene, a monolayer black phosphorus, where compression-induced ripple deformation occurs only along the zigzag direction in the strain range up to 10%, but not the armchair direction. This direction-selective ripple deformation mode in phosphorene stems from its puckered structure with coupled hinge-like bonding configurations and the resulting anisotropic Poisson ratio. We also construct an analytical model using classicalmore » elasticity theory for ripple deformation in phosphorene under arbitrary strain. The present results offer new insights into the mechanisms governing the structural and electronic properties of phosphorene crucial to its device applications.« less

Dielectric Relaxation Behavior and AC Electrical Conductivity Study of 2-(1,2-Dihydro-7-Methyl-2-Oxoquinoline-5-yl) Malononitrile (DMOQMN)

NASA Astrophysics Data System (ADS)

El-Nahass, M. M.; El-Zaidia, E. F. M.; Darwish, A. A. A.; Salem, G. F.

2017-02-01

Dielectric relaxation and alternative current conductivity of a new organic compound 2-(1,2-dihydro-7-methyl-2-oxoquinoline-5-yl) malononitrile (DMOQMN) have been investigated. X-ray diffraction (XRD) at room temperature reveals that DMOQMN samples have a polycrystalline structure of the triclinic system. The analysis of the dielectric constant and dielectric loss index suggested the dominant polarization is performed and the Maxwell-Wagner-Sillar type polarization is dominating at low frequency and high temperature. These results have been confirmed by the XRD and dielectric modulus. The estimated relaxation time and the activation energy are 9 × 10-13 s and 0.43 eV, respectively. Our results indicated that the conduction mechanism of DMOQMN is controlled by the correlation barrier hopping (CBH) model.

Simulating Space Capsule Water Landing with Explicit Finite Element Method

NASA Technical Reports Server (NTRS)

Wang, John T.; Lyle, Karen H.

2007-01-01

A study of using an explicit nonlinear dynamic finite element code for simulating the water landing of a space capsule was performed. The finite element model contains Lagrangian shell elements for the space capsule and Eulerian solid elements for the water and air. An Arbitrary Lagrangian Eulerian (ALE) solver and a penalty coupling method were used for predicting the fluid and structure interaction forces. The space capsule was first assumed to be rigid, so the numerical results could be correlated with closed form solutions. The water and air meshes were continuously refined until the solution was converged. The converged maximum deceleration predicted is bounded by the classical von Karman and Wagner solutions and is considered to be an adequate solution. The refined water and air meshes were then used in the models for simulating the water landing of a capsule model that has a flexible bottom. For small pitch angle cases, the maximum deceleration from the flexible capsule model was found to be significantly greater than the maximum deceleration obtained from the corresponding rigid model. For large pitch angle cases, the difference between the maximum deceleration of the flexible model and that of its corresponding rigid model is smaller. Test data of Apollo space capsules with a flexible heat shield qualitatively support the findings presented in this paper.

Proceedings of the Annual Meeting of the Association for Education in Journalism and Mass Communication (84th, Washington, DC, August 5-8, 2001). Minorities and Communication Division.

ERIC Educational Resources Information Center

Association for Education in Journalism and Mass Communication.

The Minorities and Communication section of the proceedings contains the following 4 selected papers: "Differences in Media by Online Business in Black- and White-Targeted Magazines: The Potential Impact of the Digital Divide on Ad Placement" (Osei Appiah and Matthew Wagner); "Racial Stereotyping and Mass Mediated Contact"…

Proceedings of the Annual Meeting of the Association for Education in Journalism and Mass Communication (74th, Boston, Massachusetts, August 7-10, 1991). Part XIV: Advertising.

ERIC Educational Resources Information Center

Association for Education in Journalism and Mass Communication.

The Advertising section of the proceedings contains the following 11 papers: "How to Systematically Design and Develop a Mastery-Based Advertising Skills Course" (Elaine L. Wagner and Andrea T. Smith); "Tolerance for Television Advertising" (W. James Potter and Walter Gantz); "Quenching the Thirst for Personal Information:…

Microscopic Optical Characterization of ZnO Bulk Crystals, Free Standing III-Nitride Substrates and III-V Structures for Non-Linear Optics

DTIC Science & Technology

2008-10-01

concentration (M.R. Phillips, M.Wagner, O.Gelhausen, V.Coleman, J.B. Brady, C. Jagadish, E. Malguth, A. Hoffmann, E.M. Goldys , J.J. Rusell; E.MRS...Malguth, A. Hoffmann, E.M. Goldys , J.J. Rusell; E.MRS Fall meeting, Symp. F, (Warsaw, Poland, 2004)); it suggests that the shift towards the red of

Measurement and Analysis of the Periodic Variation of Total Pressure in an Axial-Flow Compressor Stage.

DTIC Science & Technology

1980-11-01

u r N. rCOL.16 JA Eld Ps of@c 1394 Approved for publto release . p, - _ , r| .. .... . " iinnmrib ....on un.l i td %"n I - _LCLAILIU SECURITY...34Wake Dispersion in Turbomachines." Transac- tions of the ASME, Journal of Basic Engineering, BBD : 688-690. 87 Wagner, J. H., and Okiishi, T. H. 1977

Twisting failure of centrally loaded open-section columns in the elastic range

NASA Technical Reports Server (NTRS)

Kappus, Robert

1938-01-01

In the following report a complete theory of twisting failure by the energy method is developed, based on substantially the same assumptions as those employed by Wagner and Bleich. Problems treated in detail are: the stress and strain condition under St. Venant twist and in twist with axial constraint; the concept of shear center and the energy method for problems of elastic stability.

Is There a Gap in Our Military’s Sexual Harassment Policy Between Senior Leaders and Commanders Who Implement the Policy

DTIC Science & Technology

1999-04-01

Sexual Harassment in the Workplace : How...harassment within their unit Preventive Tools Prevention is the best tool to eliminate sexual harassment in the workplace . Employers are encouraged to...Training, 23 February 1994 11 Wagner, Ellen J., Sexual Harassment in the Workplace , ”How to Prevent, Investigate and Resolve Problems In Your

Investigation of Current State of Crytpography and Theoretical Implementation of a Cryptographic System for the Combat Service Support Control System.

DTIC Science & Technology

1987-05-01

34 Advances in Crypt g: Proceedings of CRYPTO 84,r o ... .. .. _ __...o ... .. ... ....... ed. by G.R. Blakely and D. Chaum . [Wagn84b] Wagner, Neal R...in Distributed Computer Systems," IEEE Trans. on Computers, Vol. C-35, No. 7, Jul. 86, pp. 583-590. Gifford, David K., "Cryptographic Sealing for

20 CFR 652.204 - Must funds authorized under section 7(b) of the Act (the Governor's reserve) flow through the One...

Code of Federal Regulations, 2010 CFR

2010-04-01

... the Act (the Governor's reserve) flow through the One-Stop delivery system? 652.204 Section 652.204... FUNCTIONING OF STATE EMPLOYMENT SERVICES Wagner-Peyser Act Services in a One-Stop Delivery System Environment § 652.204 Must funds authorized under section 7(b) of the Act (the Governor's reserve) flow through the...

DESIGNING STUDIES AND COLLECTING DATA USEFUL FOR CUMULATIVE RISK ASSESSMENT

EPA Science Inventory

DESIGNING STUDIES AND COLLECTING DATA USEFUL FOR CUMULATIVE RISK ASSESSMENT. J E Simmons1, C Gennings2, M Casey2, M J Plewa3, E D Wagner3, W H Carter, Jr.2, A McDonald1,Y M Sey1, L K Teuschler3 1NHEERL, ORD, U.S. EPA, RTP NC, USA; 2VCU, Richmond, VA, USA;3Univ. Illinois, Urba...

Heat Flow Budget of the Gulf of California Rift: Preliminary Results of a High Resolution Survey Across the Wagner Basin

NASA Astrophysics Data System (ADS)

Negrete-Aranda, R.; Neumann, F.; Harris, R. N.; Contreras, J.; Gonzalez-Fernandez, A.; Sclater, J. G.

2016-12-01

The thermal regime exerts a primary control on rift dynamics and mode of extension for continental lithosphere. We present three heat-flow profiles across the southern terminus of the Cerro Prieto fault, in the northern Gulf of California. The longest profile is 42 km and has a measurement spacing of 1 km that spans the hanging-wall block (Wagner basin) and the footwall block of that fault. Measurements were taken with a 6.5 m long Fielax, violin-bow probe. Most measurements are of good quality, i.e., the probe fully penetrated sediments and measurements were stable enough to perform reliable inversion for heat flow and thermal properties. However, it was necessary to perform numerous corrections due to environmental phenomena related the copious sedimentation in the area, and seasonal changes in water temperature. Our measurements indicate the total throughput across the central rift and its east shoulder is 15 KW/m per meter of rift length. More important, heat flow values cluster in three distinct spatial groups: (i) heat flow in the well sedimented depocenter of the Wagner basin is approximately 200 mW/m2; (ii) the footwall block heat-flow is approximately 400 mW/m2; and (iii) heat flow across the fault zone is very high, up to 5,000 mW/m2. Our interpretation is that the former value represents the background conductive heat flow in the rift whereas heat flow across the fault represents advective heat transport by hydrothermal fluids. The high heat flow in the footwall block of the Cerro Prieto fault might be result of both conductive and advective heat transfer by fluid seepage from the basin. These data provide evidence that fluids from deep magma bodies transported along faults assist rifting in the northern Gulf of California. We are exploring how fluids may play a role in weakening the lithosphere and help localizing/delocalizing strain along major transforms and numerous normal faults observed in the area.

The Maastricht-Duke bridge: An era of mentoring in clinical research - A model for mentoring in clinical research - A tribute to Dr. Galen Wagner.

PubMed

Meijs, Loek; Zusterzeel, Robbert; Wellens, Hein Jj; Gorgels, Anton Pm

With the passing of Dr. Galen Wagner, an exceptional collaboration between Maastricht University Medical Center, The Netherlands, and Duke Clinical Research Institute, USA, has come to an end. This article focuses on the background of what Galen coined the Maastricht-Duke bridge (MD-bridge), its merits, limitations and development throughout the years, and his special role. Between 2004 and 2015, 23 Maastricht University medical students and post-graduate students were enrolled in the 4-month research elective, mentored by Galen and the Maastricht co-mentor. They were asked to complete a survey about their MD-bridge experience. Sixteen out of the 23 students responded. None but 1 participant had prior research experience. Following their MD bridge-program most participants published 1 or more manuscripts and/or presented their research in an international setting. They felt they had full responsibility as a leader of their project with all participants developing meaningful skills useful in their current job. Fourteen out of 16 would recommend the MD-bridge experience to others. Participants considered the program of great value for their personal growth and independence, giving a feeling of achievement. In addition, for some participants it led to careers in foreign countries including medical practice and research, or obtaining PhDs. With Galen's impressive career of mentoring students, including the 23 MD-bridge participants, he has left behind an amazing concept of self-development in research and personal life. The successes of the MD-bridge prove that it is possible for students to be young investigators during or just after medical school with the potential to contribute to developing meaningful skills and noteworthy careers. Collaborations between international universities, such as the MD-bridge, are feasible and should be embraced by other institutions. Published by Elsevier Inc.

Assessing Professional Competence by Using Occupational Judgment Tests Derived From Job Analysis Questionnaires

DTIC Science & Technology

2009-01-01

theoretical framework developed by Edward L. Thorndike and his contemporaries (1935), proposed that (a) learning occurs in both formal and informal settings...implies, and general learning theory ( Thorndike , 1935) suggests, that more motivated employees should acquire more knowledge, so there should be a...that is predicted by tacit knowledge and general learning theory (Sternberg & Wagner, 1993; Thorndike , 1935). Table 3 reports modest true-score

Realizing the promise of EMRs. How a group of physicians in Texas moved forward on EMR and HIE at the same time.

PubMed

Van Wagner, Karen; Solomon, Michael R

2010-08-01

North Texas Specialty Physicians (NTSP), an independent practice association based in Forth Worth, has been working with healthcare organizations across North Texas to build an HIE known as SandlotConnect. NTSP Executive Director Karen Van Wagner, Ph.D. lays out four key strategies that appear to have been successful in winning broad and sustained acceptance by clinicians.

Mission Critical STEM Partnership with the Air Force Office of Scientific Research

DTIC Science & Technology

2015-04-06

Dr. Valerie Lundy-Wagner, Senior Research Associate, Community College Research Center Teachers College, Columbia University 29...composites. We were comparing our experiments vs. structural steel . Our project consisted of a 4x4 in square caste. The caste was fabricated by bonding...aluminum and stainless steel . The caste experiments varied from 3, 5, and 7 stainless steel rods embedded in the piece. We tested for tensile strength

The Federal Republic of Germany and Left Wing Terrorism

DTIC Science & Technology

2003-12-01

Stoll, Peter Jurgen Boock, Susan Albrecht, Rolf Clemens Wagner, and Stefan Wisniewski. 49 Merkl , p. 199. 50 Ibid, p. 192. 51 Hans-Joachim Klein...during each 2 Peter H. Merkl , “Rollerball or Neo-Nazi Violence?,” in Peter H. Merkl (ed...commitment to non-violence is hypocritical.”28 Peter Merkl described the situation best when he said, “Terrorism, of course is not the logical result of

The Impact of Labor Unions on Construction Productivity.

DTIC Science & Technology

1984-01-01

been characterized by much violence and many disagreements between labor and managemert as the legal power balance between them has swung like a...Act and the Wagner Act the balance of power shifted dramatically to the unions. Union membership grew significantly as did union action to force...favor of balancing the budget, but the individual members are not willing to risk reelection, by agreeing to cuts in their district, 24

Budgeting for National Defense Acquisition: Assessing System Linkage and the Impact of Transformation

DTIC Science & Technology

2005-06-30

which develops the Strategic Planning Guidance (SPG). The SPC is led by SECDEF and made up of the Senior Leaders Review Group (SLRG) and the...ASSESSING SYSTEM LINKAGE AND THE IMPACT OF TRANSFORMATION 30 JUNE 2005 by Lawrence R. Jones, Professor, Wagner Chair Graduate School of Business ...Public Policy Jerry McCaffery, Professor Graduate School of Business & Public Policy Kory L. Fierstine, Commander, United States Navy

Commentary on "The Evolutionary Origin of Female Orgasm" by M. Pavlicev and G. Wagner, 2016, J. Exp. Zool. (Mol. Dev. Evol.) 326(6):326-337.

PubMed

Komisaruk, Barry R

2016-12-01

Evidence is presented as an alternative to the authors' claims that in the course of evolution, a link between orgasm and ovulation has been lost in women, that evolutionary changes in clitoral anatomy underlie this loss, and that women's orgasm plays no significant role in reproduction. © 2016 Wiley Periodicals, Inc.

76 FR 7230 - Notice of Public Meeting, Coeur d'Alene District Resource Advisory Council Meeting; Idaho

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-09

... Advisory Council (RAC) will meet as indicated below. DATES: March 22, 2011. The meeting will start at 8 a.m. and end at about 3:30 p.m. with the public comment period from 1 p.m. to 1:30 p.m. The meeting will be... FURTHER INFORMATION CONTACT: Lisa Wagner, RAC Coordinator, BLM Coeur d'Alene District, 3815 Schreiber Way...

75 FR 56995 - Procurement List Proposed Additions and Deletion

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-17

... alternatives which would accomplish the objectives of the Javits-Wagner-O'Day Act (41 U.S.C. 46- 48c) in... Undershirt, Midweight Cold Weather, Gen III NSN: 8415-01-538-8598--Size S NSN: 8415-01-538-8614--Size M-R NSN...-0160--Size S-S NSN: 8415-01-546-0166--Size S-L NSN: 8415-01-546-0305--Size M-L NSN: 8415-01-546-0362...

76 FR 24048 - Notice of Public Meeting, Coeur d'Alene District Resource Advisory Council Meeting; Idaho

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-29

... Advisory Council (RAC) will meet as indicated below. DATES: June 1, 2011. The meeting will start at 8 a.m. and end no later than 3 p.m. with the public comment period from 1 p.m. to 1:30 p.m. The meeting will... CONTACT: Lisa Wagner, RAC Coordinator, BLM Coeur d'Alene District, 3815 Schreiber Way, Coeur d'Alene...

Universal Breast Cancer Antigens as Targets Linking Early Detection and Therapeutic Vaccination

DTIC Science & Technology

2005-09-01

Std. Z39.18 Table of Contents C over ................................................................................................. S F 298...3. Rebbeck TR, Friebel R, Wagner R, Lynch HT, Garber JE, Daly MB, Isaacs C, Olopade 0, Neuhausen SL, Van’t Veer L, Eeles R, Evans F , Tomlinson G...counseling, testing and referral in North America. Chapter in Risk Assessment and Management in Cancer Genetics. Eds. Lalloo F , Kerr B, Friedman JM, Evans

Initial observations on tree mortality following a severe drought in 2012 in two Indiana state forests and implications for long-term compositional dynamics

Treesearch

Andrew R. Meier; Mike R. Saunders

2014-01-01

Compositional and structural changes in response to silvicultural treatments in forest stands are well documented (e.g., Saunders and Wagner 2008), but the stochastic nature of natural disturbance events often precludes direct observation of their impacts on stand dynamics. Though the current dominance of oak-hickory forest types in the Central Hardwoods Forest region...

Inhibition of Adenovirus In Vitro DNA Replication by Vesicular Stomatitis Virus Leader RNA

DTIC Science & Technology

1986-08-18

Introduction History \\ The members of the virus family, Rhabdoviridae (from Greek rhabdo = rod), infect large numbers of vertebrates, invertebrates and...plants (Wagner et al. , 1984). Miny species have been isolated from humans, domestic animals, wildlife, fish, crabs, reptiles and insects . MJst members...are quite prolific and capable of crossing phylogenetic barriers infecting both plants and insects or insects and animals. This ability led Johnson

Trust and Trustworthiness in Human-Robot Interaction: A Formal Conceptualization

DTIC Science & Technology

2016-05-11

AFRL-AFOSR-VA-TR-2016-0198 Trust and Trustworthiness in Human- Robot Interaction: A formal conceptualization Alan Wagner GEORGIA TECH APPLIED RESEARCH...27/2013-03/31/2016 4. TITLE AND SUBTITLE Trust and Trustworthiness in Human- Robot Interaction: A formal conceptualization 5a. CONTRACT NUMBER 5b...evaluated algorithms for characterizing trust during interactions between a robot and a human and employed strategies for repairing trust during emergency

Effect of Cold Storage on Shear-induced Platelet Aggregation and Clot Strength

DTIC Science & Technology

2014-09-01

stored as 1-mL aliquots in 15-mL polypropylene centri- fuge tubes with gentle agitation either at RT (20Y24-C) or at 4-C (1Y6-C). Single AP units...vivo aging at 37-C. Brit J Haematol. 1995;91:212 218. 16. Babic AM, Josefsson EC, Bergmeier W, Wagner DD, Kaufman RM, Silberstein LE , et al. In vitro

Dual Management of Commercially Available Items - Information and Imaging Solutions.

DTIC Science & Technology

1998-06-03

Pentagon, Washington, D.C. 20301-1900. The identity of each writer and caller is fully protected. Acronyms DISC Defense Industrial Supply Center DLA...Defense Logistics Agency GSA General Services Administration JWOD Javits-Wagner-O’Day NIB National Industries for the Blind f INSPECTOR GENERAL...Defense Industrial Supply Center issued a solicitation to establish a prime vendor for its office solutions initiative. An amendment to the solicitation

Early Prediction of Lupus Nephritis Using Advanced Proteomics

DTIC Science & Technology

2009-06-01

We are working with our collaborators at the Applied Biotechnology Branch, A ir Force Research Lab, W right-Patterson Air Force Base, to accomplish...with systemic lupus erythematosus. Arthritis Rheum 2001;44:2350–7. 33. Zappitelli M, Duffy CM, Bernard C, Gupta IR . Evaluation of activity, chronicity...Children’s Hospital, Chicago, IL: Dr. Linda Wagner-Weiner (data collection); Becky Puplava (study coordinator). University of Okla- homa Health Sciences

Analysis of Alternative Watch Schedules for Shipboard Operations: A Guide for Commanders

DTIC Science & Technology

2012-03-01

legally impaired in the U.S. Memory and creativity are both negatively impacted by sleep deprivation (Butcher, 2000; Stickgold, 2005; Wagner, Gais ...section watch sections, which were analyzed in the FAST program. A. SAN JACINTO SURVEY DATA SET While on deployment in 2010, CAPT Cordle, the... Thomas , M., Sing, H., Redmond, D., Balkin, T. (2003). Patterns of performance degradation and restoration during sleep restriction and subsequent

Changing the Paradigm: Simulation, a Method of First Resort

DTIC Science & Technology

2011-09-01

Environment xvii USAF United States Air Force USD(I) Under Secretary of Defense (Intelligence) V&V Verification and Validation VIC Vector -in...continued use throughout the operations research community, and is perhaps best known from Harvey Wagner’s seminal textbook Principles of Operations...pages 887 and 890 of Harvey Wagner’s seminal textbook Principles of Operations Research (Wagner, 1969). Why was this the paradigm of the time? Was

Examination of parent-child adjustment in juvenile rheumatic diseases using depression-specific indices of parent and youth functioning.

PubMed

Bonner, Margaret S; Ramsey, Rachelle R; Ryan, Jamie L; Fedele, David A; Mullins, Larry L; Wagner, Janelle L; Jarvis, James N; Chaney, John M

2015-03-01

Studies demonstrate a link between parental distress, youth illness appraisals, and depression symptoms in youth with juvenile rheumatic diseases. However, the exclusive use of broadband (i.e. general) measures of parental distress in these studies has resulted in conceptual and clinical imprecision regarding the parent-child adjustment process. Our aim was to reanalyze previously published data (i.e. Wagner et al., 2003) using a depression-specific scale derived from the general adult distress measure in the original study. Parents completed the Brief Symptom Inventory (BSI), youth completed the Child Depression Inventory (CDI), and the Illness Intrusiveness Scale (IIS-C). Thirteen Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition) depression-specific items from the BSI comprised the parent measure of Depressive Symptoms Scale (DS). Consistent with Wagner et al. (2003), adult DS scores were associated with youth CDI scores. However, youth illness appraisals had unique effects on the parent-child depression relation. Elevated youth perceptions of illness intrusiveness amplified the negative effect of parent depressive symptoms on youth depressive symptoms; decreased illness intrusiveness buffered the negative effect of parent depression. The empirical and clinical implications of assessing parent and youth adjustment in a domain-specific manner are discussed. © The Author(s) 2013.

Statistical ultrasonics: the influence of Robert F. Wagner

NASA Astrophysics Data System (ADS)

Insana, Michael F.

2009-02-01

An important ongoing question for higher education is how to successfully mentor the next generation of scientists and engineers. It has been my privilege to have been mentored by one of the best, Dr Robert F. Wagner and his colleagues at the CDRH/FDA during the mid 1980s. Bob introduced many of us in medical ultrasonics to statistical imaging techniques. These ideas continue to broadly influence studies on adaptive aperture management (beamforming, speckle suppression, compounding), tissue characterization (texture features, Rayleigh/Rician statistics, scatterer size and number density estimators), and fundamental questions about how limitations of the human eye-brain system for extracting information from textured images can motivate image processing. He adapted the classical techniques of signal detection theory to coherent imaging systems that, for the first time in ultrasonics, related common engineering metrics for image quality to task-based clinical performance. This talk summarizes my wonderfully-exciting three years with Bob as I watched him explore topics in statistical image analysis that formed a rational basis for many of the signal processing techniques used in commercial systems today. It is a story of an exciting time in medical ultrasonics, and of how a sparkling personality guided and motivated the development of junior scientists who flocked around him in admiration and amazement.

A family with Wagner syndrome with uveitis and a new versican mutation

PubMed Central

Rothschild, Pierre-Raphaël; Brézin, Antoine P.; Nedelec, Brigitte; des Roziers, Cyril Burin; Ghiotti, Tiffany; Orhant, Lucie; Boimard, Mathieu

2013-01-01

Purpose To report the clinical and molecular findings of a kindred with Wagner syndrome (WS) revealed by intraocular inflammatory features. Methods Eight available family members underwent complete ophthalmologic examination, including laser flare cell meter measurements. Collagen, type II, alpha 1, versican (VCAN), frizzled family receptor 4, low density lipoprotein receptor-related protein 5, tetraspanin 12, and Norrie disease (pseudoglioma) genes were screened with direct sequencing. Results The index case was initially referred for unexplained severe and chronic postoperative bilateral uveitis following a standard cataract surgery procedure. Clinical examination of the proband revealed an optically empty vitreous with avascular vitreous strands and veils, features highly suggestive of WS. The systematic familial ophthalmologic examination identified three additional unsuspected affected family members who also presented with the WS phenotype, including uveitis for one of them. We identified a novel c.4004–6T>A nucleotide substitution at the acceptor splice site of intron 7 of the VCAN gene that segregated with the disease phenotype. Conclusions We present a family with WS with typical WS features and intraocular inflammatory manifestations associated with a novel splice site VCAN mutation. Beyond the structural role in the retinal-vitreous architecture, versican is also emerging as a pivotal mediator of the inflammatory response, supporting uveitis predisposition as a clinical manifestation of WS. PMID:24174867

A family with Wagner syndrome with uveitis and a new versican mutation.

PubMed

Rothschild, Pierre-Raphaël; Brézin, Antoine P; Nedelec, Brigitte; Burin des Roziers, Cyril; Ghiotti, Tiffany; Orhant, Lucie; Boimard, Mathieu; Valleix, Sophie

2013-01-01

To report the clinical and molecular findings of a kindred with Wagner syndrome (WS) revealed by intraocular inflammatory features. Eight available family members underwent complete ophthalmologic examination, including laser flare cell meter measurements. Collagen, type II, alpha 1, versican (VCAN), frizzled family receptor 4, low density lipoprotein receptor-related protein 5, tetraspanin 12, and Norrie disease (pseudoglioma) genes were screened with direct sequencing. The index case was initially referred for unexplained severe and chronic postoperative bilateral uveitis following a standard cataract surgery procedure. Clinical examination of the proband revealed an optically empty vitreous with avascular vitreous strands and veils, features highly suggestive of WS. The systematic familial ophthalmologic examination identified three additional unsuspected affected family members who also presented with the WS phenotype, including uveitis for one of them. We identified a novel c.4004-6T>A nucleotide substitution at the acceptor splice site of intron 7 of the VCAN gene that segregated with the disease phenotype. We present a family with WS with typical WS features and intraocular inflammatory manifestations associated with a novel splice site VCAN mutation. Beyond the structural role in the retinal-vitreous architecture, versican is also emerging as a pivotal mediator of the inflammatory response, supporting uveitis predisposition as a clinical manifestation of WS.

Magnetically tunable liquid dielectric with giant dielectric permittivity based on core-shell superparamagnetic iron oxide.

PubMed

Vinayasree, S; Nitha, T S; Tiwary, C S; Ajayan, P M; Joy, P A; Anantharaman, M R

2018-06-29

A liquid dielectric based on a core-shell architecture having a superparamagnetic iron oxide core and a shell of silicon dioxide was synthesized. The frequency dependence of dielectric properties was evaluated for different concentrations of iron oxide. The dependence of magnetic field on the dielectric properties was also studied. Aqueous ferrofluid exhibited a giant dielectric constant of 6.4 × 10 5 at 0.1 MHz at a concentration of 0.2 vol% and the loss tangent was 3. The large rise in dielectric constant at room temperature is modelled and explained using percolation theory and Maxwell-Wagner-Sillars type polarization. The ferrofluid is presumed to consist of nanocapacitor networks which are wired in series along the lateral direction and parallel along longitudinal direction. On the application of an external magnetic field, the chain formation and its alignment results in the variation of dielectric permittivity.

Absence of magnetic order in low-dimensional (RKKY) systems

NASA Astrophysics Data System (ADS)

Pedrocchi, Fabio; Leggett, Anthony; Loss, Daniel

2012-02-01

We extend the Mermin-Wagner theorem to a system of lattice spins which are spin-coupled to itinerant and interacting charge carriers. We use the Bogoliubov inequality to rigorously prove that neither (anti-) ferromagnetic nor helical long-range order is possible in one and two dimensions at any finite temperature. Our proof applies to a wide class of models including any form of electron-electron and single-electron interactions that are independent of spin. In the presence of Rashba or Dresselhaus spin-orbit interactions (SOI) magnetic order is not excluded and intimately connected to equilibrium spin currents. However, in the special case when Rashba and Dresselhaus SOIs are tuned to be equal, magnetic order is excluded again. This opens up a new possibility to control magnetism electrically. [4pt] References: D. Loss, F. L. Pedrocchi, and A. J. Leggett, Phys. Rev. Lett. 107, 107201 (2011).

Structural, optical and dielectric properties of Sn0.97Ce0.03O2 nanostructures

NASA Astrophysics Data System (ADS)

Ahmed, Ateeq; Siddique, M. Naseem; Ali, Tinku; Tripathi, P.

2018-05-01

In present work, 3% cerium doped SnO2 (Sn0.97Ce0.03O2) nanoparticles (NPs) have been synthesized by sol-gel method. The prepared sample has been characterized by using various techniques such as XRD, UV-visible absorption spectroscopy and LCR meter measurements. Structural Rietveld refinement of XRD data reveals that (Sn0.97Ce0.03O2) sample has a pure single phase tetragonal structure with space group (P42/mnm) without creating any impurity phase such as cerium oxide. UV-visible spectroscopy determines band gap value 3.47 eV for (Sn0.97Ce0.03O2) NPs using Tauc's relation. Dielectric constant and loss decreased with increase in frequency while ac conductivity was found to increase with increase in frequency. The observed dielectric results has been explained in the light of Maxwell-Wagner model.

Modulus spectroscopy of grain-grain boundary binary system

NASA Astrophysics Data System (ADS)

Cheng, Peng-Fei; Song, Jiang; Li, Sheng-Tao; Wang, Hui

2015-02-01

Understanding various polarization mechanisms in complex dielectric systems and specifying their physical origins are key issues in dielectric physics. In this paper, four different methods for representing dielectric properties were analyzed and compared. Depending on the details of the system under study, i.e., uniform or non-uniform, it was suggested that different representing approaches should be used to obtain more valuable information. Especially, for the grain-grain boundary binary non-uniform system, its dielectric response was analyzed in detail in terms of modulus spectroscopy (MS). Furthermore, it was found that through MS, the dielectric responses between uniform and non-uniform systems, grain and grain boundary, Maxwell-Wagner polarization and intrinsic polarization can be distinguished. Finally, with the proposed model, the dielectric properties of CaCu3Ti4O12 (CCTO) ceramics were studied. The colossal dielectric constant of CCTO at low frequency was attributed to the pseudo relaxation process of grain.

Magnetodielectric effect in CdS nanosheets grown within Na-4 mica

NASA Astrophysics Data System (ADS)

Mandal, Amrita; Mitra, Sreemanta; Datta, Anindya; Banerjee, Sourish; Chakravorty, Dipankar

2012-04-01

CdS nanosheets of thickness 0.6 nm were grown within the interlayer spaces of Na-4 mica. Magnetization measurements carried out in the temperature range 2-300 K showed the composites to have weak ferromagnetic-like properties even at room temperature. The saturation magnetization (MS) at room temperature was found to be higher than that reported for CdS nanoparticles. The higher value of MS may be ascribed to the presence of a large number defects in the present CdS system, due to a large surface to volume ratio in the nanosheets as compared to that of CdS nanoparticles. The nanocomposites exhibited a magnetodielectric effect with a dielectric constant change of 5.3% for a magnetic field of 0.5 T. This occurred due to a combination of magnetoresistance and Maxwell-Wagner effect as delineated in the model developed by Catalan.

The Chronic Care Model as vehicle for the development of disease management in Europe

PubMed Central

Spreeuwenberg, Cor

2008-01-01

The Chronic Care Model (Wagner, WHO) aims to improve the functioning and clinical situation of chronic patients by focussing on the patient, the practice team and the conditions that determine the functioning of the team. The patient is the most important actor who must be stimulated proactively by a competent, integrated practice team. Six interdependent conditional components are essential: health care organisation, delivery system design, community resources and policies, self-management support systems, decision support and clinical information systems. While the Chronic Care Model focuses on quality and effectiveness of care, disease management programmes underline more the efficiency of care. These programmes apply industrial management principles in health care. Information about process, structure and outcome is gathered and used systematically and human and material sources are used efficiently. There is evidence that the approaches of the Chronic Care Model and disease management can be integrated. Both approaches underline the need of information and focus on the patient as the main actor to improve and that a balance can be found between effectiveness and efficiency. Ideas will be given how the Chronic Care Model can be used as a framework for the development of a European way of disease management for people with a chronic condition.

Development of a wound healing index for patients with chronic wounds.

PubMed

Horn, Susan D; Fife, Caroline E; Smout, Randall J; Barrett, Ryan S; Thomson, Brett

2013-01-01

Randomized controlled trials in wound care generalize poorly because they exclude patients with significant comorbid conditions. Research using real-world wound care patients is hindered by lack of validated methods to stratify patients according to severity of underlying illnesses. We developed a comprehensive stratification system for patients with wounds that predicts healing likelihood. Complete medical record data on 50,967 wounds from the United States Wound Registry were assigned a clear outcome (healed, amputated, etc.). Factors known to be associated with healing were evaluated using logistic regression models. Significant variables (p < 0.05) were determined and subsequently tested on a holdout sample of data. A different model predicted healing for each wound type. Some variables predicted significantly in nearly all models: wound size, wound age, number of wounds, evidence of bioburden, tissue type exposed (Wagner grade or stage), being nonambulatory, and requiring hospitalization during the course of care. Variables significant in some models included renal failure, renal transplant, malnutrition, autoimmune disease, and cardiovascular disease. All models validated well when applied to the holdout sample. The "Wound Healing Index" can validly predict likelihood of wound healing among real-world patients and can facilitate comparative effectiveness research to identify patients needing advanced therapeutics. © 2013 by the Wound Healing Society.

Conservative bin-to-bin fractional collisions

NASA Astrophysics Data System (ADS)

Martin, Robert

2016-11-01

Particle methods such as direct simulation Monte Carlo (DSMC) and particle-in-cell (PIC) are commonly used to model rarefied kinetic flows for engineering applications because of their ability to efficiently capture non-equilibrium behavior. The primary drawback to these methods relates to the poor convergence properties due to the stochastic nature of the methods which typically rely heavily on high degrees of non-equilibrium and time averaging to compensate for poor signal to noise ratios. For standard implementations, each computational particle represents many physical particles which further exacerbate statistical noise problems for flow with large species density variation such as encountered in flow expansions and chemical reactions. The stochastic weighted particle method (SWPM) introduced by Rjasanow and Wagner overcome this difficulty by allowing the ratio of real to computational particles to vary on a per particle basis throughout the flow. The DSMC procedure must also be slightly modified to properly sample the Boltzmann collision integral accounting for the variable particle weights and to avoid the creation of additional particles with negative weight. In this work, the SWPM with necessary modification to incorporate the variable hard sphere (VHS) collision cross section model commonly used in engineering applications is first incorporated into an existing engineering code, the Thermophysics Universal Research Framework. The results and computational efficiency are compared to a few simple test cases using a standard validated implementation of the DSMC method along with the adapted SWPM/VHS collision using an octree based conservative phase space reconstruction. The SWPM method is then further extended to combine the collision and phase space reconstruction into a single step which avoids the need to create additional computational particles only to destroy them again during the particle merge. This is particularly helpful when oversampling the collision integral when compared to the standard DSMC method. However, it is found that the more frequent phase space reconstructions can cause added numerical thermalization with low particle per cell counts due to the coarseness of the octree used. However, the methods are expected to be of much greater utility in transient expansion flows and chemical reactions in the future.

Development of a New Research Data Infrastructure for Collaboration in Earth Observation and Global Change Science

NASA Astrophysics Data System (ADS)

Wagner, Wolfgang; Briese, Christian

2017-04-01

With the global population having surpassed 7 billion people in 2012, the impacts of human activities on the environment have started to be noticeable almost everywhere on our planet. Yet, while pressing social problems such as mass migration may be at least be partly a consequence of these impacts, many are still elusive, particularly when trying to quantify them on larger scales. Therefore, it is essential to collect verifiable observations that allow tracing environmental changes from a local to global scale over several decades. Complementing in situ networks, this task is increasingly fulfilled by earth observation satellites which have been acquiring measurements of the land, atmosphere and oceans since the beginning of the 1970s. While many multi-decadal data sets are already available, the major limitation hindering their effective exploitation in global change studies is the lack of dedicated data centres offering the high performance processing capabilities needed to process multi-year global data sets at a fine spatial resolution (Wagner, 2015). Essentially the only platform which currently offers these capabilities is Google's Earth Engine. From a scientific perspective there is undoubtedly a high need to build up independent science-driven platforms that are transparent for their users and offer a higher diversity and flexibility in terms of the data sets and algorithms used. Recognizing this need, TU Wien founded the EODC Earth Observation Data Centre for Water Resources Monitoring together with other Austrian partners in May 2014 as a public-private partnership (Wagner et al. 2014). Thanks to its integrative governance approach, EODC has succeeded of quickly developing an international cooperation consisting of scientific institutions, public organisations and several private partners. Making best use of their existing infrastructures, the EODC partners have already created the first elements of a federated IT infrastructure capable of storing and processing Petabytes of satellite data. One central site of this infrastructure is the Science Centre Arsenal in Vienna, where a cloud platform and storage system were set up and connected to the Vienna Scientific Cluster (VSC). To provide functionality, this facility connects several hardware components including a Petabyte-scale frontend storage for making data available for scientific analysis and high-performance-computing on the VSC, and robotic tape libraries for mirroring and archiving tens of Petabyte of data. In this contribution, the EODC approach for building a federated IT infrastructure and collaborative data storage and analysis capabilities are presented. REFERENCES Wagner, W. (2015) Big Data infrastructures for processing Sentinel data, in Photogrammetric Week 2015, Dieter Fritsch (Ed.), Wichmann/VDE, Berlin Offenbach, 93-104. Wagner, W., J. Fröhlich, G. Wotawa, R. Stowasser, M. Staudinger, C. Hoffmann, A. Walli, C. Federspiel, M. Aspetsberger, C. Atzberger, C. Briese, C. Notarnicola, M. Zebisch, A. Boresch, M. Enenkel, R. Kidd, A. von Beringe, S. Hasenauer, V. Naeimi, W. Mücke (2014) Addressing grand challenges in earth observation science: The Earth Observation Data Centre for Water Resources Monitoring, ISPRS Commission VII Symposium, Istanbul, Turkey, 29 September-2 October 2014, ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences (ISPRS Annals), Volume II-7, 81-88.

Along-strike variations of structural styles in the imbricated Molasse of Salzburg and Upper Austria: a 3-D seismic perspective

NASA Astrophysics Data System (ADS)

Hinsch, Ralph; Linzer, Hans-Gert

2010-05-01

At the southern border of the Northern Alpine Foreland Basin syntectonic deposits (Molasse Sediments) are partly incorporated into Alpine contractional deformation. Along the alpine chain style and timing of this deformation varies significantly. In this study we use one of the largest European on-shore 3-D seismic datasets, spanning the Molasse basin of Upper Austria and Salzburg states, to investigate the along-strike structural architecture of the alpine deformation front. In the Austrian Part of the Molasse basin, foredeep sedimentation started in Upper-Eocene times (Wagner, 1996). The sediments cover the European margin, consisting of a crystalline basement covered by variously thick Mesozoic sediments (Nachtmann und Wagner, 1987). In Oligocene to Lower Miocene times, syntectonic foredeep sedimentation took place in a deep marine environment, comprising an axial channel system (Linzer 2001, DeRuig and Hubbard, 2006). Parts of these syntectonic sediments are subsequently affected by the advancing thrust wedge. Within the study area, three distinct fold-and-thrust belt segments of different structural architecture can be defined. 1) The Perwang Imbricates are a promontory mostly situated in Salzburg at the border to Germany. Complexly deformed small thrust sheets evolve above a detachment horizon situated in Late Cretaceous shaly marls in Oligocene times. Syntectonic piggy-back and thrust top basins evolve (Covault et al. 2008), which are partly affected by subsequent Miocene overthrusting. 2) The Regau Segment is the area west of the Perwang lobe. It is dominated by few number of thrust sheets in the Molasse sediments. Instead, over-thrusting by the alpine wedge (pre-deformed Flysch and Helvetic thrust sheets) dominates. 3) The Sierning Imbricates segment is located further to the east, at the border of Upper Austria to Lower Austria. The structural inventory of this thrust belt is comprises varying numbers of thrust sheets along strike (1-5), ramp-flat-ramp geometries, tear faults as well as belt-parallel strike-slip faults. The differences in structural style along strike are interpreted to be caused by pre-deformational conditions (sediment thickness and distribution of potential decollement horizons) and varying tectonic pulses. Covault, J.A., Hubbard, S.M., Graham, S.A., Hinsch, R. and Linzer, H., 2008, Turbidite-reservoir architecture in complex foredeep-margin and wedge-top depocenters, Tertiary Molasse foreland basin system, Austria, Marine and Petroleum Geology, V26/3, 379-396 De Ruig, M. J., and Hubbard, S. M., 2006. Seismic facies and reservoir characteristics of a deep marine channel belt in the Molasse foreland basin. AAPG Bulletin, v. 90, p. 735-752 Linzer, H.-G., 2001, Cyclic channel systems in the Molasse foreland basin of the Eastern Alps- the effects of Late Oligocene foreland thrusting and Early Miocene lateral escape. AAPG Bulletin, 85, 118. Nachtmann, W., Wagner, L., 1987.Mesozoic and Early Tertiary evolution of the Alpine Foreland in Upper Austria and Salzburg, Austria. Tectonophysics, 137, 61-76 Wagner, L. R., 1996. Stratigraphy and hydrocarbons in the Upper Austrian Molasse Foredeep (active margin). In:Wessely, G., Liebl, W. (Eds.), Oil and Gas in Alpidic Thrustbelts and Basins of Central and Eastern Europe. EAGE Special Pub. 5, pp. 217-235.

Error Characterisation and Merging of Active and Passive Microwave Soil Moisture Data Sets

NASA Astrophysics Data System (ADS)

Wagner, Wolfgang; Gruber, Alexander; de Jeu, Richard; Parinussa, Robert; Chung, Daniel; Dorigo, Wouter; Reimer, Christoph; Kidd, Richard

2015-04-01

As part of the Climate Change Initiative (CCI) programme of the European Space Agency (ESA) a data fusion system has been developed which is capable of ingesting surface soil moisture data derived from active and passive microwave sensors (ASCAT, AMSR-E, etc.) flown on different satellite platforms and merging them to create long and consistent time series of soil moisture suitable for use in climate change studies. The so-created soil moisture data records (latest version: ESA CCI SM v02.1 released on 5/12/2014) are freely available and can be obtained from http://www.esa-soilmoisture-cci.org/. As described by Wagner et al. (2012) the principle steps of the data fusion process are: 1) error characterisation, 2) matching to account for data set specific biases, and 3) merging. In this presentation we present the current data fusion process and discuss how new error characterisation methods, such as the increasingly popular triple collocation method as discussed for example by Zwieback et al. (2012) may be used to improve it. The main benefit of an improved error characterisation would be a more reliable identification of the best performing microwave soil moisture retrieval(s) for each grid point and each point in time. In case that two or more satellite data sets provides useful information, the estimated errors can be used to define the weights with which each satellite data set are merged, i.e. the lower its error the higher its weight. This is expected to bring a significant improvement over the current data fusion scheme which is not yet based on quantitative estimates of the retrieval errors but on a proxy measure, namely the vegetation optical depth (Dorigo et al., 2015): over areas with low vegetation passive soil moisture retrievals are used, while over areas with moderate vegetation density active retrievals are used. In transition areas, where both products correlate well, both products are being used in a synergistic way: on time steps where only one of the products is available, the estimate of the respective product is used, while on days where both active and passive sensors provide an estimate, their observations are averaged. REFERENCES Dorigo, W.A., A. Gruber, R. de Jeu, W. Wagner, T. Stacke, A. Löw, C. Albergel, L. Brocca, D. Chung, R. Parinussa, R. Kidd (2015) Evaluation of the ESA CCI soil moisture product using ground-based observations, Remote Sensing of Environment, in press. Wagner, W., W. Dorigo, R. de Jeu, D. Fernandez, J. Benveniste, E. Haas, M. Ertl (2012) Fusion of active and passive microwave observations to create an Essential Climate Variable data record on soil moisture, ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences (ISPRS Annals), Volume I-7, XXII ISPRS Congress, Melbourne, Australia, 25 August-1 September 2012, 315-321. Zwieback, S., K. Scipal, W. Dorigo, W. Wagner (2012) Structural and statistical properties of the collocation technique for error characterization, Nonlinear Processes in Geophysics, 19, 69-80.

Graphene Oxide Papers Simultaneously Doped with Mg(2+) and Cl(-) for Exceptional Mechanical, Electrical, and Dielectric Properties.

PubMed

Lin, Xiuyi; Shen, Xi; Sun, Xinying; Liu, Xu; Wu, Ying; Wang, Zhenyu; Kim, Jang-Kyo

2016-01-27

This paper reports simultaneous modification of graphene oxide (GO) papers by functionalization with MgCl2. The Mg(2+) ions enhance both the interlayer cross-links and lateral bridging between the edges of adjacent GO sheets by forming Mg-O bonds. The improved load transfer between the GO sheets gives rise to a maximum of 200 and 400% increases in Young's modulus and tensile strength of GO papers. The intercalation of chlorine between the GO layers alters the properties of GO papers in two ways by forming ionic Cl(-) and covalent C-Cl bonds. The p-doping effect arising from Cl contributes to large enhancements in electrical conductivities of GO papers, with a remarkable 2500-fold surge in the through-thickness direction. The layered structure and the anisotropic electrical conductivities of reduced GO papers naturally create numerous nanocapacitors that lead to charge accumulation based on the Maxwell-Wagner (MW) polarization. The combined effect of much promoted dipolar polarizations due to Mg-O, C-Cl, and Cl(-) species results in an exceptionally high dielectric constant greater than 60 000 and a dielectric loss of 3 at 1 kHz by doping with 2 mM MgCl2. The excellent mechanical and electrical properties along with unique dielectric performance shown by the modified GO and rGO papers open new avenues for niche applications, such as electromagnetic interference shielding materials.

Analysis on the Oversize Blast Furnace Desulfurization and a Sulfide Capacity Prediction Model Based on Congregated Electron Phase

NASA Astrophysics Data System (ADS)

Zhenyang, Wang; Jianliang, Zhang; Gang, An; Zhengjian, Liu; Zhengming, Cheng; Junjie, Huang; Jingwei, Zhang

2016-02-01

Through analyzed and regressed the actual productive desulfurization data from the oversize blast furnace (5500 m3) in north China, the relationship between the sulfur distribution parameters and the slag composition in actual production situation was investigated. As the slag and hot metal phases have their own balance sulfur content or sulfur partial pressure in gas phase, respectively, the non-equilibrium of sulfur among gas, slag, and metal phases leads to the transmission and distribution of sulfur. Combined with sulfur transmission reactions between gas, slag and metal phases, C/CO pairs equilibrium, and Wagner model, the measured sulfide capacity can be acquired using sulfur distribution ratio, sulfur activity coefficient, and oxygen activity in hot metal. Based on the theory of congregated electron phase, a new sulfide capacity prediction model (CEPM) has been developed, which has a good liner relationship with the measured sulfide capacity. Thus, using the burden structure for BF, the ironmaking slag composition can be obtained simply and can be used to reliably predict the ironmaking slag desulfurization ability a few hours later after charging under a certain temperature by CEPM.

The influence of sulcus width on simulated electric fields induced by transcranial magnetic stimulation

PubMed Central

Janssen, A M; Rampersad, S M; Lucka, F; Lanfer, B; Lew, S; Aydin, Ü; Wolters, C H; Stegeman, D F; Oostendorp, T F

2013-01-01

Volume conduction models can help in acquiring knowledge about the distribution of the electric field induced by transcranial magnetic stimulation (TMS). One aspect of a detailed model is an accurate description of the cortical surface geometry. Since its estimation is difficult, it is important to know how accurate the geometry has to be represented. Previous studies only looked at the differences caused by neglecting the complete boundary between the CSF and GM (Thielscher et al. 2011; Bijsterbosch et al. 2012), or by resizing the whole brain (Wagner et al. 2008). However, due to the high conductive properties of the CSF, it can be expected that alterations in sulcus width can already have a significant effect on the distribution of the electric field. To answer this question, the sulcus width of a highly realistic head model, based on T1-, T2- and diffusion-weighted magnetic resonance images (MRI), was altered systematically. This study shows that alterations in the sulcus width do not cause large differences in the majority of the electric field values. However, considerable overestimation of sulcus width produces an overestimation of the calculated field strength, also at locations distant from the target location. PMID:23787706

Gelation in a model 1-component system with adhesive hard-sphere interactions

NASA Astrophysics Data System (ADS)

Kim, Jung Min; Eberle, Aaron; Fang, Jun; Wagner, Norman

2012-02-01

Colloidal dispersions can undergo a dynamical arrest of the disperse phase leading to a system with solid-like properties when either the volume fraction or the interparticle potential is varied. Systems that contain low to moderate particulate concentrations form gels whereas higher concentrations lead to glassy states in which caging by nearest neighbors can be a significant contributor to the arrested long-time dynamics. Colloid polymer mixtures have been the prevalent model system for studying the effect of attraction, where attractions are entropically driven by depletion effects, in which gelation has been shown to be a result of phase separation [1]. Using the model 1-component octadecyl coated silica nanoparticle system, Eberle et al. [2] found the gel-line to intersect the spinodal to the left of the critical point, and at higher concentrations extended toward the mode coupling theory attractive driven glass line. . We continue this study by varying the particle diameter and find quantitative differences which we explain by gravity. 1. Lu, P.J., et al., Nature, 2008. 453(7194): p. 499-504.2. Eberle, A.P.R., N.J. Wagner, and R. Castaneda-Priego, Physical Review Letters, 2011. 106(10).

Some Comments on the Decays of eta (550)

DOE R&D Accomplishments Database

Veltman, M.; Yellin, J.

1966-07-01

Various decay modes of the {eta}(500) are discussed. The relations, through SU{sub 3} and the Gell-Mann, Sharp, Wagner model, between the {eta}-decay modes and the modes {eta} {yields} {pi}{pi}{gamma), {pi}{sup 0} {yields} {gamma}{gamma} are investigated taking into account {eta}-{eta}{sup *} mixing. The present experimental values for the neutral branching ratios plus the shape of the {eta} {yields} {pi}{sup +}{pi}{sup {minus}}{pi}{sup 0} Dalitz plot are shown to require a 25% {vert_bar}{Delta}{rvec I}{vert_bar} = 3 contribution to the {eta} {yields} 3{pi} amplitude. The connection between a possible charge asymmetry in {eta} {yields} {pi}{sup +}{pi}{sup {minus}}{pi}{sup 0} and the branching ratio {Gamma}{sub {eta} {yields} {pi}{sup 0}e{sup +}e{sup {minus}}}/{Gamma}{sub {eta}}{sup all} is investigated in the framework of a model proposed earlier by several authors. It is shown that there is no conflict between the existing data and this model. The Dalitz plot distribution of {eta} {yields} {pi}{sup +}{pi}{sup {minus}}{pi}{sup 0} is discussed under various assumptions about the properties of the interaction responsible for the decay. (auth)

Magnetocapacitance without magnetoelectric coupling

NASA Astrophysics Data System (ADS)

Catalan, G.

2006-03-01

The existence of a magnetodielectric (magnetocapacitance) effect is often used as a test for multiferroic behavior in new material systems. However, strong magnetodielectric effects can also be achieved through a combination of magnetoresistance and the Maxwell-Wagner effect, unrelated to true magnetoelectric coupling. The fact that this resistive magnetocapacitance does not require multiferroic materials may be advantageous for practical applications. Conversely, however, it also implies that magnetocapacitance per se is not sufficient to establish that a material is multiferroic.

Stennis holds Information Technology Expo

NASA Image and Video Library

2010-06-16

Brian Wagner (l to r) with the U.S. Navy, Andrew Hiukenbein with NVision Solutions and Theresa Avoskey with the Naval Oceanographic Office at Stennis Space Center learn about the latest improvements in making flash drives secure during an Information Technology Expo held June 16. Various area companies visited Stennis during the day to offer exhibits for employees on a range of information technology topics. The theme of the daylong expo was 'The Road to Green IT Computing.'

Cast Ductile Iron 155mm M804 Bodies

DTIC Science & Technology

1990-07-12

for the final delivery. The balance of the parts were returned to Wagner Castings for analysis, scrap, or de-militarization. The radiographic...as possible to avoid pre-cure. Mixing/ mulling time should be consistent with the system " worklife " or poor composite properties will result. Tensile...Burn-in on castings is caused by poor sand density, poor mixing, out of balance mix or improper drying of the wash. Long set times are an indication

Statement by Marsden G. Wagner, M. D. Representing the American Public Health Association before the Select Subcommittee on Education, March 3, 1970.

ERIC Educational Resources Information Center

Wagner, Marsden G.

Critical issues in day care and early child education are outlined, and HR Bill 13520 is evaluated. The issues are: (1) the serious shortage of day care for children of working mothers, (2) rapidly increasing evidence that intervention must begin before the age of 3, if the poverty cycle is to be broken, (3) a need for comprehensive, continuous…

75 FR 7290 - Notice of Public Meeting, Coeur d'Alene District Resource Advisory Council Meeting and Recreation...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-18

.... The meeting will start at 8 a.m. on April 6 and end around 12 p.m. on April 7. The public comment period will be from 1 p.m. to 1:30 p.m. on April 6. The meeting will be held at the Bureau of Land Management Office, 3815 Schreiber Way, Coeur d'Alene, Idaho. FOR FURTHER INFORMATION CONTACT: Lisa Wagner...

The Land Warrior Soldier System: A Case Study for the Acquisition of Soldier Systems

DTIC Science & Technology

2008-12-01

demonstration projects (Montgomery, Godden, LaBerge & Wagner, 1994). The ASB ad-hoc study found that the then-recent SIPE demonstrations offered...Personal Navigation” by Peter Sherman and Steven Holmes, Draper Laboratory, Cambridge, Massachusetts, October 2005. U.S. Army Research Institute for...8217 perspective. [Interview with researchers]. Haley, R. L., Campbell, C. C., Holter, M. R., Shields, J., Godden, G. D., & LaBerge , W. B. (1991, December). Army

Deciphering the Mechanism of Alternative Cleavage and Polyadenylation in Mantle Cell Lymphoma (MCL)

DTIC Science & Technology

2015-12-01

expression, increased cell proliferation and increased tumor growth in an in vivo mouse xenograft . [13]. However, Pcf11 did not have any effect on the...miRNA Regulation through Alternative Polyadenylation in Glioblastoma . (Selected for Plenary talk). Symposia on Cancer research, 2014. Illuminating...Albrecht T.R., Li W., Shyu A-B., and Wagner, E.J. CFlm25 Links Global change in APA to Cell Growth Control and Glioblastoma Survival. Abstract

Polycyclic aromatic hydrocarbons in soils and crops after irrigation of wastewater discharged from domestic sewage treatment plants.

PubMed

Chung, N J; Cho, J Y; Park, S W; Park, B J; Hwang, S A; Park, T I

2008-08-01

The effects of domestic wastewater application on the translocation and accumulation of polycyclic aromatic hydrocarbons (PAHs) in soil and crops (rice, lettuce, and barley) were investigated by Wagner's pot experiment. In the soils and crops after domestic wastewater irrigation, high-molecular weight PAHs (5 to 6 ring) were not detected, but low-molecular weight PAHs (3 to 4 ring) were only detected at trace levels.

Inorganic Halogen Oxidizer Research

DTIC Science & Technology

1975-02-26

K. 0. Christe and C. J. Schack, Advances Inorg. Chem. Radiochem. 15. "The NF * Radical Cation. Esr Studies of Radiation Effects in NF„+ Salts...and 25°) in a wide variety of polar and nonpolar solvents, such as aqueous solutions, alcohols, ketones , esters, ethers , and aromatic and halogenated... Studies of Radiation Effects in NF, Salts = 4 S. P. Mishra, M. C R. Symons, K. 0. Christe, R. D. Wilson and R. I. Wagner Received. . . August .9

UNASUR and Its Future Impact on the Americas

DTIC Science & Technology

2009-03-24

Community, “La Comunidad Sudamericana de Naciones: Un proyecto político y un gran programa de desarrollo” , http://www.comunidadandina.org/prensa...articulos/ wagner_palestra2005.htm (accessed February 10, 2009). 19 Andean Community, “Declaración sobre la Convergencia de los Procesos de Integración en ...from the constitutive treaty. 28 Natasha Niebieskikwiat, “Por el veto uruguayo, aplazan la elección de Kirchner en Unasur”, Clarin, December 18, 2008

Efficient Sensitivity Methods for Probabilistic Lifing and Engine Prognostics

DTIC Science & Technology

2010-09-01

AFRL-RX-WP-TR-2010-4297 EFFICIENT SENSITIVITY METHODS FOR PROBABILISTIC LIFING AND ENGINE PROGNOSTICS Harry Millwater , Ronald Bagley, Jose...5c. PROGRAM ELEMENT NUMBER 62102F 6. AUTHOR(S) Harry Millwater , Ronald Bagley, Jose Garza, D. Wagner, Andrew Bates, and Andy Voorhees 5d...Reliability Assessment, MIL-HDBK-1823, 30 April 1999. 9. Leverant GR, Millwater HR, McClung RC, Enright MP, A New Tool for Design and Certification of

Handicapped Workers. Commission Fees Paid to Central Nonprofit Agencies. Briefing Report to the Chairman, Subcommittee on Employment and Housing, Committee on Government Operations, House of Representatives.

ERIC Educational Resources Information Center

General Accounting Office, Washington, DC.

Matters related to commission fees paid to the National Industries for the Blind (NIB) and to the National Industries for the Severely Handicapped (NISH) were reviewed. These fees were paid by sheltered workshops that employed blind or other severely handicapped individuals and produced goods and services under the Javits-Wagner-O'Day Act. The…

Assessing the outstanding 2003 fire events in Portugal with a Regional Climate Model

NASA Astrophysics Data System (ADS)

Trigo, Ricardo; Jerez, Sonia; Camara, Carlos; Montávez, Juan Pedro

2013-04-01

The heatwave that struck western Iberia in the early days of August 2003 was characterized by record high values of both maximum (47.3°C) and minimum (30.6°c) temperatures in Portugal, associated with extremely low humidity levels and relatively intense wind speed (Trigo et al., 2006). These conditions triggered the most devastating sequence of large fires ever registered in Portugal. The estimated total burnt area was about 450.000 ha, including 280.000 ha of forest (Pereira et al., 2011). The outstanding total burnt area value corresponds to roughly 5% of the Portuguese territory, and represents approximately twice the previous maximum observed in 1998 (~220.000 ha), and about four times the long-term average observed between 1980 and 2004. Here we characterise this unusual episode using meteorological fields obtained from both observations and a regional climate model. In this work we use the longest (49-years) high-resolution regional climate simulation available driven by reanalysis data spanning from 1959 to 2007 and covering the entire Iberian Peninsula. This long run was obtained using the MM5 model with a spatial resolution of 10 km. Using this high spatial and temporal resolution we have computed the Canadian Fire Weather Index (FWI) System to produce hourly values of fire risk. The FWI System consists of six components that account for the effects of fuel moisture and wind on fire behaviour (van Wagner, 1987). We show the temporal evolution of high resolution patterns for several fire related variables during the most important days for triggering new fires (the first week of August 2003). Besides the absolute value of Tmax, Tmin, wind (speed and direction), relative humidity and FWI we also evaluate the corresponding anomalies of these fields, obtained after removing the long-term smoothed daily climatology. Pereira M.G., Malamude B.D., Trigo R.M., Alves P.I. (2011) "The History and Characteristics of the 1980-2005 Portuguese Rural Fire Database". Natural Hazards and Earth System Sciences. 11, 3343-3358, doi:10.5194/nhess-11-3343-2011 Trigo R.M., Pereira J.M.C., Pereira M.G., Mota B., Calado M.T., DaCamara C.C., Santo F.E. (2006) "The exceptional fire season of summer 2003 in Portugal". International Journal of Climatology, 26 (13): 1741-1757 NOV 15 2006. Van Wagner, C.E., 1987. Development and structure of the Canadian forest fire weather index system. Canadian Forestry Service, Forest Technical Report 35, Ottawa, 37 pp.

Second-mode control in hypersonic boundary layers over assigned complex wall impedance

NASA Astrophysics Data System (ADS)

Sousa, Victor; Patel, Danish; Chapelier, Jean-Baptiste; Scalo, Carlo

2017-11-01

The durability and aerodynamic performance of hypersonic vehicles greatly relies on the ability to delay transition to turbulence. Passive aerodynamic flow control devices such as porous acoustic absorbers are a very attractive means to damp ultrasonic second-mode waves, which govern transition in hypersonic boundary layers under idealized flow conditions (smooth walls, slender geometries, small angles of attack). The talk will discuss numerical simulations modeling such absorbers via the time-domain impedance boundary condition (TD-IBC) approach by Scalo et al. in a hypersonic boundary layer flow over a 7-degree wedge at freestream Mach numbers M∞ = 7.3 and Reynolds numbers Rem = 1.46 .106 . A three-parameter impedance model tuned to the second-mode waves is tested first with varying resistance, R, and damping ratio, ζ, revealing complete mode attenuation for R < 20. A realistic IBC is then employed, derived via an inverse Helmholtz solver analysis of an ultrasonically absorbing carbon-fiber-reinforced carbon ceramic sample used in recent hypersonic transition experiments by Dr. Wagner and co-workers at DLR-Göttingen.

Associative (not Hebbian) learning and the mirror neuron system.

PubMed

Cooper, Richard P; Cook, Richard; Dickinson, Anthony; Heyes, Cecilia M

2013-04-12

The associative sequence learning (ASL) hypothesis suggests that sensorimotor experience plays an inductive role in the development of the mirror neuron system, and that it can play this crucial role because its effects are mediated by learning that is sensitive to both contingency and contiguity. The Hebbian hypothesis proposes that sensorimotor experience plays a facilitative role, and that its effects are mediated by learning that is sensitive only to contiguity. We tested the associative and Hebbian accounts by computational modelling of automatic imitation data indicating that MNS responsivity is reduced more by contingent and signalled than by non-contingent sensorimotor training (Cook et al. [7]). Supporting the associative account, we found that the reduction in automatic imitation could be reproduced by an existing interactive activation model of imitative compatibility when augmented with Rescorla-Wagner learning, but not with Hebbian or quasi-Hebbian learning. The work argues for an associative, but against a Hebbian, account of the effect of sensorimotor training on automatic imitation. We argue, by extension, that associative learning is potentially sufficient for MNS development. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

Summation of reinforcement rates when conditioned stimuli are presented in compound.

PubMed

Andrew, Benjamin J; Harris, Justin A

2011-10-01

Three experiments used delay conditioning of magazine approach in rats to examine the summation of responding when two conditioned stimuli (CSs) are presented together as a compound. The duration of each CS varied randomly from trial-to-trial around a mean that differed between the CSs. This meant that the rats' response rate to each CS was systematically related to the reinforcement rate of that CS, but remained steady as time elapsed during the CS (Harris & Carpenter, 2011; Harris, Gharaei, & Pincham, 2011). When the rats were presented with a compound of two CSs that had been conditioned separately, they responded more during the compound than during either of the CSs individually. More significantly, however, in all three experiments, the rats responded to the compound at the same rate as they responded to a third CS that had been reinforced at a rate equal to the sum of the reinforcement rates of the two CSs in compound. We discuss the implications of this finding for associative models (e.g., Rescorla & Wagner, 1972) and rate-based models (Gallistel & Gibbon, 2000) of conditioning.

Putative inhibitory training of a stimulus makes it a facilitator: a within-subject comparison of visual and auditory stimuli in autoshaping.

PubMed

Nakajima, S

2000-03-14

Pigeons were trained with the A+, AB-, ABC+, AD- and ADE+ task where each of stimulus A and stimulus compounds ABC and ADE signalled food (positive trials), and each of stimulus compounds AB and AD signalled no food (negative trials). Stimuli A, B, C and E were small visual figures localised on a response key, and stimulus D was a white noise. Stimulus B was more effective than D as an inhibitor of responding to A during the training. After the birds learned to respond exclusively on the positive trials, effects of B and D on responding to C and E, respectively, were tested by comparing C, BC, E and DE trials. Stimulus B continuously facilitated responding to C on the BC test trials, but D's facilitative effect was observed only on the first DE test trial. Stimulus B also facilitated responding to E on BE test trials. Implications for the Rescorla-Wagner elemental model and the Pearce configural model of Pavlovian conditioning were discussed.

Hide and vanish: data sets where the most parsimonious tree is known but hard to find, and their implications for tree search methods.

PubMed

Goloboff, Pablo A

2014-10-01

Three different types of data sets, for which the uniquely most parsimonious tree can be known exactly but is hard to find with heuristic tree search methods, are studied. Tree searches are complicated more by the shape of the tree landscape (i.e. the distribution of homoplasy on different trees) than by the sheer abundance of homoplasy or character conflict. Data sets of Type 1 are those constructed by Radel et al. (2013). Data sets of Type 2 present a very rugged landscape, with narrow peaks and valleys, but relatively low amounts of homoplasy. For such a tree landscape, subjecting the trees to TBR and saving suboptimal trees produces much better results when the sequence of clipping for the tree branches is randomized instead of fixed. An unexpected finding for data sets of Types 1 and 2 is that starting a search from a random tree instead of a random addition sequence Wagner tree may increase the probability that the search finds the most parsimonious tree; a small artificial example where these probabilities can be calculated exactly is presented. Data sets of Type 3, the most difficult data sets studied here, comprise only congruent characters, and a single island with only one most parsimonious tree. Even if there is a single island, missing entries create a very flat landscape which is difficult to traverse with tree search algorithms because the number of equally parsimonious trees that need to be saved and swapped to effectively move around the plateaus is too large. Minor modifications of the parameters of tree drifting, ratchet, and sectorial searches allow travelling around these plateaus much more efficiently than saving and swapping large numbers of equally parsimonious trees with TBR. For these data sets, two new related criteria for selecting taxon addition sequences in Wagner trees (the "selected" and "informative" addition sequences) produce much better results than the standard random or closest addition sequences. These new methods for Wagner trees and for moving around plateaus can be useful when analyzing phylogenomic data sets formed by concatenation of genes with uneven taxon representation ("sparse" supermatrices), which are likely to present a tree landscape with extensive plateaus. Copyright © 2014 Elsevier Inc. All rights reserved.

Determinants and Politics of German Military Transformation in the Post-Cold War Era

DTIC Science & Technology

2011-06-01

Jahrhundert, eds. Joachim Krause and Jan C. Irlenkaeuser (Opladen: Verlag Barbara Budrich, 2006), 97. 2 military changed after the end of the Cold...Anforderungen an deutsche Streitkräfte im 21. Jahrhundert, eds. Joachim Krause and Jan C. Irlenkaeuser (Opladen: Verlag Barbara Budrich, 2006), 182. 12...2007), 763–778; Svenja Sinjen and Johannes Varwick, 101-106; Wolfgang Wagner, ―Die Außen-, Sicherheits- und Verteidigungspolitik der Europäischen

Determination of Percent Body Fat Using 3D Whole Body Laser Scanning: A Preliminary Investigation

DTIC Science & Technology

2006-11-01

S.B., Lohman, T.G., Wang, Z., and Going, S.B., 2005: Human body composition: Human Kinetics : Champaign, IL. Heyward, V.H. and Wagner, D.R...2004: Applied body composition assessment: Human Kinetics : Champaign, IL. Hodgdon, J.A., and Beckett, M.B., 1984a: Prediction of percent body fat...ethnicity. In: Human body Composition., Heymsfield, S.B., Lohman, T.G., Wang, Z., and Going, S.B (eds.). Human Kinetics : Champaign, IL. Marriott

Test Review: Torgesen, J. K., Wagner, R. K., and Rashotte, C. A. (2012), "Test of Word Reading Efficiency-Second Edition" (TOWRE-2). Austin, TX: Pro-Ed

ERIC Educational Resources Information Center

Tarar, Jessica M.; Meisinger, Elizabeth B.; Dickens, Rachel H.

2015-01-01

The TOWRE-2 was developed to provide an efficient measure of two essential wordlevel reading skills, sight word reading and phonetic decoding skills. The Sight Word Efficiency (SWE) subtest assesses the number of real words that an individual can read from a vertical list within 45 s. This subtest is designed to measure the size of an individual's…

The Vietnam Cauldron: Defense Intelligence in the War for Southeast Asia

DTIC Science & Technology

2012-01-01

For the Patriots. Major Robert P. Perry, USA Celeste M. Brown Vivienne A. Clark Dorothy M. Curtiss Joan K. Pray Doris J. Watkins Colonel Charles R. Ray...USA Chief Warrant Officer Robert W. Prescott, USA Chief Warrant Officer Kenneth D. Welch, USA Petty Officer First Class Michael R. Wagner, USN...Marshall Karl W. Teepe Patricia E. Mickley Robert J. Hymel Rosa M. Chapa Sandra N. Foster Charles E. Sabin i Defense Intelligence Historical Perspectives

Block Copolymer Composites: A Bio-Optic Synthetic System for Dynamic Control of Refractive Index

DTIC Science & Technology

2005-06-16

Wagner (interfacial) polarization of dispersed, ion-conductive phases in PS - b -PEO containing NLO-active moieties. In this initiative we postulate that...either by application of an electric or magnetic field. Technical Results Spatial modulation of refractive index in PS - b -PEO composites. Over the 18 month...segments with ionizable salts and polarizable, electrorefractive moieties and nanocrystals. Simple devices comprised of thin films of PS - b -PEO/KDP, PS - b

Adsorption of 2 Chloroethyl Ethyl Sulfide on Silica: Binding Mechanism and Energy of a Bifunctional Hydrogen-Bond Acceptor at the Gas Surface Interface

DTIC Science & Technology

2014-11-19

C. A. S.; Sumpter, K. B.; Wagner, G. W.; Rice, J. S. Degradation of the Blister Agent Sulfur Mustard, Bis(2-chloroethyl) Sulfide, on Concrete . J...SECURITY CLASSIFICATION OF: This work investigates the fundamental nature of sulfur mustard surface adsorption by characterizing interfacial hydrogen...nature of sulfur mustard surface adsorption by characterizing interfacial hydrogen bonding and other intermolecular forces for the surrogate molecule

Lifetime Measurement of HgCdTe Semiconductor Material

DTIC Science & Technology

2012-03-01

long-wavelength (>15 μm) infrared spectral region. HgCdTe is a very effective infrared detector material because of its different properties. The...properties that make HgCdTe an effective infrared detector are its adjustable bandgap of 0.7 to 25 μm, its high absorption coefficient, its moderate... HgCdTe infrared detectors . Retrieved Jul. 17, 2011, from http://www.wat.edu.pl/review/optor/10(3)159.pdf Wagner, R. J. (1999 Apr. 16). In

Laser Probe Vaporization/Oxidation Testing of High Temperature Composites

DTIC Science & Technology

1989-07-11

Smith and H.S. Liszt, J. Quant. Spectosc. Rad. Trans., 12, 505 (1972). 5. A. Czernichowski and W. Zyrnicki, Acta Physica Polonica , A32, 865 (1970). 6. 0...Lagerqvist, and I. Renhorn, Physica Scripta, 14, 298 (1976). 2. G. Herzberg, Molecular Spectra and Molecular Structure. I. Spectra of Diatomic Molecules...Sheehan, General Atomics (2) H. Cappelen, K. Johansen, and K. Motzfeldt, Acta Chim. Scand. A35 247 (1981) (3) C. Wagner, J.Appl.Phys. 29 1295 (1958) (4

Multifunctional Ultra-High Vacuum Apparatus for Studies of the Interactions of Chemical Warfare Agents on Complex Surfaces

DTIC Science & Technology

2014-01-02

colleagues employed solid state NMR to study the decomposition of CWAs on MgO,36 AgY and NaY zeolites ,37 CaO,38 and Al2O3.39 More recently, the...37G. W. Wagner and P. W. Bartram, “Reactions of VX, HD, and their simu- lants with NaY and AgY zeolites . Desulfurization of VX on AgY,” Lang- muir 15

Naval Surface Forces Real-Time Reutilization Asset Management Warehouses: A Cost-Benefit Analysis

DTIC Science & Technology

2008-12-01

shared their valuable insights. And finally, to our advisors Dr . Ken Euske and CDR Brett Wagner who kept us on track throughout the project. Nick could...of $206,368,657. SURFOR’s East and West Coast warehouses accounted for $146,975,108 of the list value. The team identified potential cost...obligating the funds. A relatively simple cost benefit analysis of the reprogramming costs versus the cost savings would justify the expense. In the

Cost and mortality data of a regional limb salvage and hyperbaric medicine program for Wagner Grade 3 or 4 diabetic foot ulcers.

PubMed

Eggert, J V; Worth, E R; Van Gils, C C

2016-01-01

We obtained costs and mortality data in two retrospective cohorts totaling 159 patients who have diabetes mellitus and onset of a diabetic foot ulcer (DFU). Data were collected from 2005 to 2013, with a follow-up period through September 30, 2014. A total of 106 patients entered an evidence-based limb salvage protocol (LSP) for Wagner Grade 3 or 4 (WG3/4) DFU and intention-to-treat adjunctive hyperbaric oxygen (HBO₂) therapy. A second cohort of 53 patients had a primary lower extremity amputation (LEA), either below the knee (BKA) or above the knee (AKA) and were not part of the LSP. Ninety-six of 106 patients completed the LSP/HBO₂with an average cost of USD $33,100. Eighty-eight of 96 patients (91.7%) who completed the LSP/HBO₂had intact lower extremities at one year. Thirty-four of the 96 patients (35.4%) died during the follow-up period. Costs for a historical cohort of 53 patients having a primary major LEA range from USD $66,300 to USD $73,000. Twenty-five of the 53 patients (47.2%) died. The difference in cost of care and mortality between an LSP with adjunctive HBO₂therapy vs. primary LEA is staggering. We conclude that an aggressive limb salvage program that includes HBO₂ therapy is cost-effective.

Klamath Mountains Ecoregion: Chapter 13 in Status and trends of land change in the Western United States--1973 to 2000

USGS Publications Warehouse

Sleeter, Benjamin M.; Calzia, James P.

2012-01-01

The Klamath Mountains Ecoregion covers approximately 47,791 km2 (18,452 mi2) of the Klamath and Siskiyou Mountains of northern California and southern Oregon (fig. 1) (Omernik, 1987; U.S. Environmental Protection Agency, 1997). The ecoregion is flanked by the Coast Range Ecoregion to the west, the Southern and Central California Chaparral and Oak Woodlands Ecoregion to the south, the Cascades and the Eastern Cascades Slopes and Foothills Ecoregions to the east, and the Willamette Valley Ecoregion to the north. The mild Mediterranean climate of the ecoregion is characterized by hot, dry summers and wet winters; the amount of winter moisture varies within the ecoregion, decreasing from west to east. The Klamath–Siskiyou Mountains region is widely recognized as an important biodiversity hotspot (Whittaker, 1960; Kruckeberg, 1984; Wagner, 1997; DellaSala and others, 1999), containing more than 3,500 plant species, more than 200 of which are endemic (Sawyer, 2007). A biological assessment by DellaSala and others (1999) ranked the Klamath–Siskiyou Mountains region as the fifth richest coniferous forest in terms of species diversity. In addition, the International Union for the Conservation of Nature considers the region an area of notable botanical importance (Wagner, 1997). Twenty-nine different species of conifers can be found in the Klamath Mountains Ecoregion (Sawyer, 1996).

The Efficacy of Fast ForWord-Language Intervention in School-Age Children with Language Impairment: A Randomized Controlled Trial

PubMed Central

Gillam, Ronald B.; Loeb, Diane Frome; Hoffman, LaVae M.; Bohman, Thomas; Champlin, Craig A.; Thibodeau, Linda; Widen, Judith; Brandel, Jayne; Friel-Patti, Sandy

2008-01-01

Purpose A randomized controlled trial (RCT) was conducted to compare the language and auditory processing outcomes of children assigned to Fast ForWord-Language (FFW-L) to the outcomes of children assigned to nonspecific or specific language intervention comparison treatments that did not contain modified speech. Method Two hundred and sixteen children between the ages of 6 and 9 years with language impairments were randomly assigned to one of four arms: Fast ForWord-Language (FFW-L), academic enrichment (AE), computer-assisted language intervention (CALI), or individualized language intervention (ILI) provided by a speech-language pathologist. All children received 1 hour and 40 minutes of treatment, 5 days per week, for 6 weeks. Language and auditory processing measures were administered to the children by blinded examiners before treatment, immediately after treatment, 3 months after treatment, and 6 months after treatment. Results The children in all four arms improved significantly on a global language test and a test of backward masking. Children with poor backward masking scores who were randomized to the FFW-L arm did not present greater improvement on the language measures than children with poor backward masking scores who were randomized to the other three arms. Effect sizes, analyses of standard error of measurement, and normalization percentages supported the clinical significance of the improvements on the CASL. There was a treatment effect for the Blending Words subtest on the Comprehensive Test of Phonological Processing (Wagner, Torgesen, & Rashotte, 1999). Participants in the FFW-L and CALI arms earned higher phonological awareness scores than children in the ILI and AE arms at the six-month follow-up testing. Conclusion Fast ForWord-Language, the language intervention that provided modified speech to address a hypothesized underlying auditory processing deficit, was not more effective at improving general language skills or temporal processing skills than a nonspecific comparison treatment (AE) or specific language intervention comparison treatments (CALI and ILI) that did not contain modified speech stimuli. These findings call into question the temporal processing hypothesis of language impairment and the hypothesized benefits of using acoustically modified speech to improve language skills. The finding that children in the three treatment arms and the active comparison arm made clinically relevant gains on measures of language and temporal auditory processing informs our understanding of the variety of intervention activities that can facilitate development. PMID:18230858

Ames Optimized TCA Configuration

NASA Technical Reports Server (NTRS)

Cliff, Susan E.; Reuther, James J.; Hicks, Raymond M.

1999-01-01

Configuration design at Ames was carried out with the SYN87-SB (single block) Euler code using a 193 x 49 x 65 C-H grid. The Euler solver is coupled to the constrained (NPSOL) and the unconstrained (QNMDIF) optimization packages. Since the single block grid is able to model only wing-body configurations, the nacelle/diverter effects were included in the optimization process by SYN87's option to superimpose the nacelle/diverter interference pressures on the wing. These interference pressures were calculated using the AIRPLANE code. AIRPLANE is an Euler solver that uses a unstructured tetrahedral mesh and is capable of computations about arbitrary complete configurations. In addition, the buoyancy effects of the nacelle/diverters were also included in the design process by imposing the pressure field obtained during the design process onto the triangulated surfaces of the nacelle/diverter mesh generated by AIRPLANE. The interference pressures and nacelle buoyancy effects are added to the final forces after each flow field calculation. Full details of the (recently enhanced) ghost nacelle capability are given in a related talk. The pseudo nacelle corrections were greatly improved during this design cycle. During the Ref H and Cycle 1 design activities, the nacelles were only translated and pitched. In the cycle 2 design effort the nacelles can translate vertically, and pitch to accommodate the changes in the lower surface geometry. The diverter heights (between their leading and trailing edges) were modified during design as the shape of the lower wing changed, with the drag of the diverter changing accordingly. Both adjoint and finite difference gradients were used during optimization. The adjoint-based gradients were found to give good direction in the design space for configurations near the starting point, but as the design approached a minimum, the finite difference gradients were found to be more accurate. Use of finite difference gradients was limited by the CPU time limit available on the Cray machines. A typical optimization run using finite difference gradients can use only 30 to 40 design variables and one optimization iteration within the 8 hour queue limit for the chosen grid size and convergence level. The efficiency afforded by the adjoint method allowed for 50-120 design variables and 5-10 optimization iterations in the 8 hour queue. Geometric perturbations to the wing and fuselage were made using the Hicks/Henne (HH) shape functions. The HH functions were distributed uniformly along the chords of the wing defining sections and lofted linearly. During single-surface design, constraints on thickness and volume at selected wing stations were imposed. Both fuselage camber and cross-sectional area distributions were permitted to change during design. The major disadvantage to the use of these functions is the inherent surface waviness produced by repeated use of such functions. Many smoothing operations were required following optimization runs to produce a configuration with reasonable smoothness. Wagner functions were also used on the wing sections but were never used on the fuselage. The Wagner functions are a family of increasingly oscillatory functions that have also been used extensively in airfoil design. The leading and trailing edge regions of the wing were designed by use of polynomial and monomial functions respectively. Twist was attempted but was abandoned because of little performance improvement available from changing the baseline twist.

Heliotropium (Boraginaceae) in the Marquesas Islands (French Polynesia) with description of a new species.

PubMed

Lorence, David H; Wagner, Warren L

2015-01-01

During the preparation of the Vascular Flora of the Marquesas Islands a new endemic species of Heliotropium L. (Boraginaceae) has come to light and is described herein: Heliotropiumperlmanii Lorence & W. L. Wagner. It is known only from the island of Eiao and appears most closely related to Heliotropiummarchionicum Decne., also endemic to the Marquesas and known from Nuku Hiva. An amended description of Heliotropiummarchionicum and key to separate the Marquesan species are given and their differences discussed.

VizieR Online Data Catalog: Member stars in the MW satellite Tucana III (Simon+, 2017)

NASA Astrophysics Data System (ADS)

Simon, J. D.; Li, T. S.; Drlica-Wagner, A.; Bechtol, K.; Marshall, J. L.; James, D. J.; Wang, M. Y.; Strigari, L.; Balbinot, E.; Kuehn, K.; Walker, A. R.; Abbott, T. M. C.; Allam, S.; Annis, J.; Benoit-Levy, A.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Cunha, C. E.; D'Andrea, C. B.; da Costa, L. N.; Depoy, D. L.; Desai, S.; Doel, P.; Fernandez, E.; Flaugher, B.; Frieman, J.; Garcia-Bellido, J.; Gaztanaga, E.; Goldstein, D. A.; Gruen, D.; Gutierrez, G.; Kuropatkin, N.; Maia, M. A. G.; Martini, P.; Menanteau, F.; Miller, C. J.; Miquel, R.; Neilsen, E.; Nord, B.; Ogando, R.; Plazas, A. A.; Romer, A. K.; Rykoff, E. S.; Sanchez, E.; Santiago, B.; Scarpine, V.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, R. C.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Whiteway, L.; Yanny, B.; DES Collaboration

2017-10-01

We observed Tuc III with the IMACS spectrograph on the Magellan Baade telescope on five nights in 2015 July, one night in 2015 October, and four nights in 2016 August/September (resolution of R~11000). All observations were obtained with a wide-band 5600-9200Å filter. We selected targets for spectroscopy using photometry from the Dark Energy Survey (DES) Year 2 quick release (Y2Q1) catalog (Drlica-Wagner+ 2015ApJ...813..109D). (1 data file).

A Survey of Mobile and Wireless Technologies for Augmented Reality Systems (Preprint)

DTIC Science & Technology

2008-02-01

Windows XP. A number of researchers have started employing them in AR simulations such as Wagner et al [25], Newman et al [46] and specifically the Sony ...different music clubs and styles of music according to the selection and tastes of the listeners. In the intro sequence the user can select an animated...3-D character (avatar) as his or her virtual persona and visit the different music rooms in the virtual disco. Users can download or stream music in

Synovial osteochondromatosis in hereditary arthro-ophthalmopathy (Wagner-Stickler syndrome).

PubMed

Tins, Bernhard; Cassar-Pullicino, Victor

2003-05-01

A case of bilateral synovial osteochondromatosis in a patient with hereditary arthro-ophthalmopathy is presented. The osteochondral lesions were largely calcified in one joint and largely chondromatous in the other. Typical features of hereditary arthro-ophthalmopathy are reviewed and it is hypothesised that the abnormal collagen in this syndrome is responsible for the development of synovial osteochondromatosis. Synovial manifestations of skeletal dysplasias have to our knowledge not been described previously but we suggest that synovial osteochondromatosis can be the manifestation of an underlying skeletal dysplasia.

Challenge from Without: Analysis of the Recommendations Advanced by Five National Education Task Forces and Their Policy Implications for Precollege and Higher Education. The Nelson A. Rockefeller Institute of Government Special Report Series Number 4.

ERIC Educational Resources Information Center

Kemmerer, Frances; And Others

This report includes expanded versions of two papers by Frances Kemmerer and Alan P. Wagner which were first presented at a 1983 working seminar on the recommendations of five national educational task forces and their implications for New York State educational policy. Included also is a major additional paper contributed by W. Paul Vogt. The…

High Resolution Magic Angle Spinning Nuclear Magnetic Resonance (HRMAS NMR) for Studies of Reactive Fabrics

DTIC Science & Technology

2015-11-01

Group Chemistry, 2010, 9, 205-219. 6 C. A. S. Brevett and K. B. Sumpter, “ Sulfur Mustard Degradation on Ambient and Moist Concrete ”, ECBC Technical...reactions of reagents including chemical weapons on materials like concrete , soil, and sand, as well as reactive polymers.3,4,5,6,7 There are...Sumpter, G. W. Wagner, “Degradation of Mustard on Concrete : GC/MSD and SSMAS,” ECBC Technical Report ECBC-TR-482, Edgewood Chemical Biological Center

Military Doctrine, and Maxims of Napoleon, A Bibliography of Periodical Articles.

DTIC Science & Technology

1984-10-01

0041-770X. ....- S. . ..... -79 PART II - DOCTRINE -1. USA ANDERSON, NORMAN J. "A Statement of Doctrine," NCG, 47:10. November 1963. "Army 86...Process," MILRVW, 64:46-57, January 1984. KRAUSE, MICHAEL D..~ - "Arthur L. Wagner : Doctrine and Lessons from the Past," MILRVW, 58:53-9, November...June 1927. b. Democratic Republic of Germany (DDR). BELL, RAYMOND E. "Armor Development in the Weimar Republic," MILRVW, 47:12-7, March 1967. c

The Mechanisms and Effects of the Plant Activation of Chemicals in the Environment

DTIC Science & Technology

1991-12-02

amino- Uilich et al., 1973; Raz- fluorene-N-hydroxylase. zouk et al., 1980 * Did not inhibit the TXI cell activation of m-PDA, howev- Wagner et al...P450 in mammals and Goujon et al., 1972, Car- yeast. Inhibited 2-AF hydroxylase. ratore et al., 1986; Raz- zouk et al., 1980 i Did not inhibit the TXI...Activation of 2-aminofluorene by cultured plant cells. Science 219:1427-1429 Poulsen LL, R.M. Hyslop , D.M. Ziegler. 1974. S-oxidation of

Magnetic Induction Machines Integrated into Bulk-Micromachined Silicon

DTIC Science & Technology

2006-04-01

Actuator Workshop (Hilton Head 2000), pp. 43–7, Jun. 2000. [5] H. Guckel et al., “A first functional current excited planar rotational magnetic micromotor ...in Proc. IEEE Micro Electro Mechanical Sys- tems (MEMS’93), Feb. 1993, pp. 7–11. [6] , “Planar rotational magnetic micromotors ,” Int. J. Appl... micromotor with fully integrated stator and coils,” J. Micro- electromech. Syst., vol. 2, no. 4, pp. 165–73, Dec. 1993. [8] B. Wagner, M. Kreutzer, and W

A Cost Containment Case for Occupational Illness and Injury Case Management

DTIC Science & Technology

1988-06-15

hypochondriacs, "worried well" or WW, problem patients, and persistent somatizers (Wagner & Curran, 1984). In order to distinguish the WW from other health care...report that 14 TAERE I-ALES IRELCH TO ASES HEAIZ HELM~ IN A HEMLI MAJNNMM (JIMO2ATWN 1. Somatic ptoatol : Frequency x average intensity of the six... somatic symptoms which include: stomach trouble, headaches, weight gain, appetite loss, tired and nn down, and trouble sleeping (’at do you think is your

Determination of Phase Transformation Temperatures of Titanium-Nickel Using Differential Thermal Analysis

DTIC Science & Technology

1980-10-01

Kariotis, and F. J. Stimler, " Nitinol Characterization Study," NASA CR 1433, September 1969. 4. H. U. Schuerch, "Certain Physical Properties and...Applications of Nitinol ," NASA CR 1232, November 1969. 5. G. R. Speich and R. M. Fisher, "Acoustic Emission During Martensite Formation," ASTM STP 505...34The Effect of Alloying on Shape Memory Phenomenon in Nitinol ," Scripta Met., Vol. 10, 1976, pp. 667-672. 10. C. M. Jackson, H. J. Wagner, and R. J

Authenticating Secure Tokens Using Slow Memory Access

DTIC Science & Technology

1999-01-01

Cryptology— CRYPTO ’97 Proceedings, Springer- Verlag, 1997, pp. 513–525. [CP93] D . Chaum and T. Pederson, “Wallet Databases with Observers,” Advances in...96 Proceedings, Springer-Verlag, 1996, pp. 1–15. [BDL97] D . Boneh, R.A. Demillo, R.J. Lip- ton, “On the Importance of Check- ing Cryptographic...Protocols for Faults,” Advances in Cryptology—EUROCRYPT ’97 Proceedings, Springer-Verlag, 1997, pp. 37–51. [BGW98] M. Briceno, I. Goldberg, D . Wagner

Characterization and Evolution of Salmonella CRISPR-Cas Systems

DTIC Science & Technology

2014-01-01

aeruginosa and Streptococcus pyogenes ( Cady et al., 2011; Deltcheva et al., 2011). In the former, CRISPR-Cas has been linked to the regulation of...Science 321, 960–964. Cady , K. C., White, A. S., Hammond, J. H., Abendroth, M. D., Karthikeyan, R. S., Lalitha, P., Zegans, M. E. & O’Toole, G. A...40, 5569–5576. Zegans, M. E., Wagner, J. C., Cady , K. C., Murphy, D. M., Hammond, J. H. & O’Toole, G. A. (2009). Interaction between bacteriophage

Leaders break ground for INFINITY

NASA Image and Video Library

2008-11-20

Community leaders from Mississippi and Louisiana break ground for the new INFINITY at NASA Stennis Space Center facility during a Nov. 20 ceremony. Groundbreaking participants included (l to r): Gottfried Construction representative John Smith, Mississippi Highway Commissioner Wayne Brown, INFINITY board member and Apollo 13 astronaut Fred Haise, Stennis Director Gene Goldman, Studio South representative David Hardy, Leo Seal Jr. family representative Virginia Wagner, Hancock Bank President George Schloegel, Mississippi Rep. J.P. Compretta, Mississippi Band of Choctaw Indians representative Charlie Benn and Louisiana Sen. A.G. Crowe.

Searching for Baryon Acoustic Oscillations in Intergalactic Absorption: The Expanding Universe

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

This simulation follows the growth of density perturbations in both gas and dark matter components in a volume 1 billion light years on a side beginning shortly after the Big Bang and evolved to half the present age of the universe. Credits: Science: Michael L. Norman, Robert Harkness, Pascal Paschos, Rick Wagner, San Diego Supercomputer Center/University of California, San Diego Visualization: Mark Hereld, Joseph A. Insley, Michael E. Papka, Argonne National Laboratory; Eric C. Olson, University of Chicago

High Temperature Surface Interactions

DTIC Science & Technology

1989-11-01

and importance. To predict the parabolic scaling rate for a pure metal forming a dense, adherent one-phase scale, Wagner (1) needed only to assume that...coefficient for the acidic Ca(V03) 4 solute. Thus, limited measurements of CeO2 in the 0.7 Na2SO4-0.3NaVO3 solution can be interpolated to predict the...solutions can be predicted , as shown in Fig. 13. Obviously, these assumptions about the solution thermodynamics should receive experimental testing. In any

Diffusivity in Alumina Scales Grown on Al-MAX Phases

NASA Technical Reports Server (NTRS)

Smialek, James L.

2014-01-01

Ti3AlC2, Ti2AlC, and Cr2AlC are oxidation resistant MAX phase compounds distinguished by the formation of protective Al2O3 scales with well controlled kinetics. A modified Wagner treatment was used to obtain interfacial grain boundary diffusivity, deltaD(sub gb,O,int.), from scale growth rates and corresponding grain size. It is based on the p(O2)(exp -1/6) dependency of the double charged oxygen vacancy and oxygen diffusivity, coupled with the effective diffusion constant for short circuit grain boundary paths. Data from the literature for MAX phases was analyzed accordingly, and deltaD(sub gb,O,int.) was found to nearly coincide with the Arrhenius line developed for Zr-doped FeCrAl, where: deltaD(sub gb,O,int.) = 1.8x10(exp -10) exp(-375 kJ/RT) cubic meters/s. Furthermore, this oxidation relation suggests the more general format applicable to bulk samples under ambient conditions: deltaD(sub gb,O) = 7.567x10(exp -8) exp(-544 kJ/RT) p(O2)(exp -1/6) cubic meters/[s x Pa(exp -1/6)]. Data from many other FeCrAl(X) studies were similarly assessed to show general agreement with the relation for deltaD(sub gb,O,int.). This analysis reinforces the view that protective alumina scales grow by similar mechanisms for these Al-MAX phases and oxidation resistant FeCrAl alloys.

Peripheral neuropathy may increase the risk for asymptomatic otic barotrauma during hyperbaric oxygen therapy: research report.

PubMed

Mozdzanowski, Christopher; Perdrizet, George A

2014-01-01

Otic barotrauma (OBT) is an adverse event seen in patients receiving hyperbaric oxygen (HBO2) therapy. After encountering a case of painless tympanic perforation during HBO2 therapy of a diabetic patient with the diagnosis of neuropathic Wagner Grade III foot ulcer, we hypothesized that peripheral neuropathy of the lower extremity may be associated with an increased risk of asymptomatic OBT during HBO2 therapy. The medical records of all HBO2 patients during a one-year period of time were reviewed. Subjects were selected based on otoscopic documentation of OBT and divided into two groups based on the presence or absence of lower extremity peripheral neuropathy. Time to therapeutic compression, presence or absence of ear-related symptoms and modified Teed (mTeed) scores were compared between the two groups. A total of 38 patients with OBT, 18 neuropathic and 20 non-neuropathic, were identified. Asymptomatic OBT occurred more frequently in the neuropathic vs. non-neuropathic group (56% vs. 5%, p < 0.001). mTeed scores were significantly greater in the neuropathic vs. non-neuropathic group (mTeed 1, 30% vs. 61%; mTeed 2, 65% vs. 36%; mTeed 3, 4% vs. 3%; p = 0.032). Mean compression times were shorter in the neuropathic vs. non-neuropathic group (10. 5 +/- 1.8 vs. 14.4 +/- 3.3 minutes, p < 0.001). The presence of peripheral neuropathy of the lower extremity may be associated with a significantly greater incidence of asymptomatic otic barotrauma during HBO2 therapy.

Microstructural and optical properties of Ca and Cr doped cobalt ferrite nanoparticles synthesized by auto combustion

NASA Astrophysics Data System (ADS)

Agrawal, Shraddha; Parveen, Azra; Azam, Ameer

2018-05-01

The Ca and Cr doped cobalt ferrite nanoparticles (Co0.8Ca0.2) (Fe0.8 Cr0.2)2O4 were synthesized by auto combustion method. Microstructural studies were carried out by X-ray diffraction (XRD). The crystalline size of synthesized nanoparticles as determined by the XRD was found to be 17.6 nm. These structural studies suggest that the crystal system remains spinal even with the doping of calcium and chromium. Optical properties of Ca and Cr doped cobalt ferrite were studied by UV-visible technique in the range of 200-800 nm. The energy band gap was calculated with the help of Tauc relationship. Ca and Cr doped cobalt ferrite annealed at 600°C exhibit significant dispersion in complex permeability. The dielectric constant and dielectric loss of cobalt ferrite were studied as a function of frequency and were explained on the basis of Koop's theory based on Maxwell Wagner two layer models and electron hopping.

Electrical properties of lunar soil sample 15301,38

NASA Technical Reports Server (NTRS)

Olhoeft, G. R.; Frisillo, A. L.; Strangway, D. W.

1974-01-01

Electrical property measurements have been made on an Apollo 15 lunar soil sample in ultrahigh vacuum from room temperature to 827 C for the frequency spectrum from 100 Hz through 1 MHz. The dielectric constant, the total ac loss tangent, and the dc conductivity were measured. The dc conductivity showed no thermal hysteresis, but an irreversible (in vacuum) thermal effect was found in the dielectric loss tangent on heating above 700 C and during the subsequent cooling. This appears to be related to several effects associated with lunar glass above 700 C. The sample also showed characteristic low-frequency dispersion in the dielectric constant with increasing temperature, presumably due to Maxwell-Wagner intergranular effects. The dielectric properties may be fitted to a model involving a Cole-Cole frequency distribution that is relatively temperature-independent below 200 C and follows a Boltzmann temperature distribution with an activation energy of 2.5 eV above 200 C. The dc conductivity is fitted by an exponential temperature distribution and becomes the dominant loss above 700 C.

Numerical modeling of the early interaction of a planar shock with a dense particle field

NASA Astrophysics Data System (ADS)

Regele, Jonathan; Blanquart, Guillaume

2011-11-01

Dense compressible multiphase flows are of interest for multiphase turbomachinary and energetic material detonations. Still, there is little understanding of the detailed interaction mechanisms between shock waves and dense (particle volume fraction αd > 0 . 001) particle fields. A recent experimental study [Wagner et al, AIAA Aero. Sci., Orlando, 2011-188] has focused on the impingement of a planar shock wave on a dense particle curtain. In the present work, numerical solutions of the Euler equations in one and two dimensions are performed for a planar shock wave impinging on a fixed particle curtain and are compared to the experimental data for early times. Comparison of the one- and two-dimensional results demonstrate that the one-dimensional description captures the large scale flow behavior, but is inadequate to capture all the details observed in the experiments. The two-dimensional solutions are shown to reproduce the experimentally observed flow structures and provide insight into how these details originate.

Unraveling surface enabled magnetic phenomena in low dimensional systems

NASA Astrophysics Data System (ADS)

Baljozovic, Milos; Girovsky, Jan; Nowakowski, Jan; Ali, Md Ehesan; Rossmann, Harald; Nijs, Thomas; Aeby, Elise; Nowakowska, Sylwia; Siewert, Dorota; Srivastava, Gitika; WäCkerlin, Christian; Dreiser, Jan; Decurtins, Silvio; Liu, Shi-Xia; Oppeneer, Peter M.; Jung, Thomas A.; Ballav, Nirmalya

Molecular spin systems with controllable interactions are of both fundamental and applied importance. These systems help us to better understand the fundamental origins of the interactions involved in low dimensional magnetic systems and to put them in the framework of existing models towards their further development. Following our first observation of exchange induced magnetic ordering in paramagnetic porphyrins adsorbed on ferromagnetic Co surface we showed that magnetic properties of such molecules can be controllably altered upon exposure to chemical and physical stimuli. In our most recent work it was shown that a synthetically programmed co-assembly of Fe and Mn phthalocyanines can also be realized on diamagnetic Au(111) surfaces where it induces long-range 2D ferrimagnetic order, at first glance in conflict with the Mermin-Wagner theory. Here we provide evidence for the first direct observation of such ordering from STM/STS and XMCD data and from DFT +U calculations demonstrating key role of the Au(111) surface states in mediating AFM RKKY coupling of the Kondo underscreened magnetic moments.

Spousal Similarity in Life Satisfaction before and after Divorce

PubMed Central

Wortman, Jessica; Lucas, Richard E.

2015-01-01

Previous research has explored possible origins of individual differences in subjective well-being, focusing largely on stable, internal characteristics of traits as predictors of life satisfaction (Diener & Lucas, 1999). Although past work has demonstrated that life satisfaction is largely stable over the life span, other evidence has also demonstrated the lasting impact of life events. In this study, we use married couples as a test of the impact of life circumstances on life satisfaction, focusing on similarity in life satisfaction before and after divorce. If life satisfaction is impacted by shared life circumstances, married couples (who share life circumstances) should show greater similarity in life satisfaction before divorce than after. We tested this possibility using a dyadic latent-state-trait model that examined cross-spouse similarity in the stable and changing components of life satisfaction. Using a nationally representative panel study from Germany (Wagner, Frick & Schupp, 2007), we showed that similarity declined substantially following divorce. This suggests that life satisfaction is related to shared life circumstances. PMID:26436842

Spousal similarity in life satisfaction before and after divorce.

PubMed

Wortman, Jessica; Lucas, Richard E

2016-04-01

Previous research has explored possible origins of individual differences in subjective well-being, focusing largely on stable, internal characteristics of traits as predictors of life satisfaction (Diener & Lucas, 1999). Although past work has demonstrated that life satisfaction is largely stable over the life span, other evidence has also demonstrated the lasting impact of life events. In this study, we use married couples as a test of the impact of life circumstances on life satisfaction, focusing on similarity in life satisfaction before and after divorce. If life satisfaction is impacted by shared life circumstances, married couples (who share life circumstances) should show greater similarity in life satisfaction before divorce than after. We tested this possibility using a dyadic latent-state-trait model that examined cross-spouse similarity in the stable and changing components of life satisfaction. Using a nationally representative panel study from Germany (Wagner, Frick & Schupp, 2007), we showed that similarity declined substantially following divorce. This suggests that life satisfaction is related to shared life circumstances. (c) 2016 APA, all rights reserved).

Coarsening Kinetics and Morphological Evolution in a Two-Phase Titanium Alloy During Heat Treatment

NASA Astrophysics Data System (ADS)

Xu, Jianwei; Zeng, Weidong; Jia, Zhiqiang; Sun, Xin; Zhao, Yawei

2016-03-01

The effects of alpha/beta heat treatment on microstructure evolution of Ti-17 alloy with a lamellar colony structure are established. Heat treatment experiments are conducted at 1103 or 1063 K for times ranging from 10 min to 8 h. The main features of microstructure evolution during heat treatment comprise static globularization and coarsening of primary alpha phase. Such behaviors can be accelerated by higher heat treatment temperature. Furthermore, globularization and coarsening behaviors show a faster rate at higher prestrain. In order to better understand the microstructure evolution of Ti-17 alloy during alpha/beta heat treatment, static globularization and coarsening behaviors are modeled in the theoretical frame of the Johnson-Mehl-Avarmi-Kolmogorov (JMAK) and Lifshitz-Slyozov-Wagner (LSW) theories, respectively. The JMAK and LSW kinetics parameters are derived under different experimental conditions. Agreements between measurements and predictions are found, indicating that the JMAK and LSW theories can be used to predict and trace static globularization and coarsening processes of Ti-17 alloy during alpha/beta heat treatment.

Exploring the Room-Temperature Ferromagnetism and Temperature-Dependent Dielectric Properties of Sr/Ni-Doped LaFeO3 Nanoparticles Synthesized by Reverse Micelle Method

NASA Astrophysics Data System (ADS)

Naseem, Swaleha; Khan, Shakeel; Husain, Shahid; Khan, Wasi

2018-03-01

This paper reports the thermal, microstructural, dielectric and magnetic properties of La0.75Sr0.25Fe0.65Ni0.35O3 nanoparticles (NPs) synthesized via reverse micelle technique. The thermogravimetric analysis of as-prepared NPs confirmed a good thermal stability of the sample. Powder x-ray diffraction data analyzed with a Rietveld refinement technique revealed single-phase and orthorhombic distorted perovskite crystal structure of the NPs having Pbnm space group. The transmission electron microscopy images show the crystalline nature and formation of nanostructures with a fairly uniform distribution of particles throughout the sample. Temperature-dependent dielectric properties of the NPs in accordance with the Kramers-Kronig transformation (KKT) model, universal dielectric response model and jump relaxation model have been discussed. Electrode or interface polarization is likely the cause of the observed dielectric behavior. Due to grain boundaries and Schottky barriers of the metallic electrodes of semiconductors, the depletion region is observed, which gives rise to Maxwell-Wagner relaxation and hence high dielectric constants. Magnetic studies revealed the ferromagnetic nature of the prepared NPs upon Sr and Ni doping in LaFeO3 perovskite at room temperature. Therefore, these NPs could be a potential candidate as electrode material in solid oxide fuel cells.

Frequency dispersions of human skin dielectrics.

PubMed Central

Poon, C S; Choy, T T

1981-01-01

The electrical properties of many biological materials are known to exhibit frequency dispersions. In the human skin, the impedance measured at various frequencies closely describes a circular locus of the Cole-Cole type in the complex impedance plane. In this report, the formative mechanisms responsible for the anomalous circular-arc behavior of skin impedance were investigated, using data from impedance measurements taken after successive strippings of the skin. The data were analyzed with respect to changes in the parameters of the equivalent Cole-Cole model after each stripping. For an exponential resistivity profile (Tregear, 1966, Physical Functions of Skin; Yamamoto and Yamamoto, 1976, Med. Biol. Eng., 14:151--158), the profile of the dielectric constant was shown to be uniform across the epidermis. Based on these results, a structural model has been formulated in terms of the relaxation theory of Maxwell and Wagner for inhomogeneous dielectric materials. The impedance locus obtained from the model approximates a circular are with phase constant alpha = 0.82, which compares favorably with experimental data. At higher frequencies a constant-phase, frequency-dependent component having the same phase constant alpha is also demonstrated. It is suggested that an approximately rectangular distribution of the relaxation time over the epidermal dielectric sheath is adequate to account for the anomalous frequency characteristics of human skin impedance. PMID:7213928

The influence of sulcus width on simulated electric fields induced by transcranial magnetic stimulation

NASA Astrophysics Data System (ADS)

Janssen, A. M.; Rampersad, S. M.; Lucka, F.; Lanfer, B.; Lew, S.; Aydin, Ü.; Wolters, C. H.; Stegeman, D. F.; Oostendorp, T. F.

2013-07-01

Volume conduction models can help in acquiring knowledge about the distribution of the electric field induced by transcranial magnetic stimulation. One aspect of a detailed model is an accurate description of the cortical surface geometry. Since its estimation is difficult, it is important to know how accurate the geometry has to be represented. Previous studies only looked at the differences caused by neglecting the complete boundary between cerebrospinal fluid (CSF) and grey matter (Thielscher et al 2011 NeuroImage 54 234-43, Bijsterbosch et al 2012 Med. Biol. Eng. Comput. 50 671-81), or by resizing the whole brain (Wagner et al 2008 Exp. Brain Res. 186 539-50). However, due to the high conductive properties of the CSF, it can be expected that alterations in sulcus width can already have a significant effect on the distribution of the electric field. To answer this question, the sulcus width of a highly realistic head model, based on T1-, T2- and diffusion-weighted magnetic resonance images, was altered systematically. This study shows that alterations in the sulcus width do not cause large differences in the majority of the electric field values. However, considerable overestimation of sulcus width produces an overestimation of the calculated field strength, also at locations distant from the target location.

Rapid learning dynamics in individual honeybees during classical conditioning.

PubMed

Pamir, Evren; Szyszka, Paul; Scheiner, Ricarda; Nawrot, Martin P

2014-01-01

Associative learning in insects has been studied extensively by a multitude of classical conditioning protocols. However, so far little emphasis has been put on the dynamics of learning in individuals. The honeybee is a well-established animal model for learning and memory. We here studied associative learning as expressed in individual behavior based on a large collection of data on olfactory classical conditioning (25 datasets, 3298 animals). We show that the group-averaged learning curve and memory retention score confound three attributes of individual learning: the ability or inability to learn a given task, the generally fast acquisition of a conditioned response (CR) in learners, and the high stability of the CR during consecutive training and memory retention trials. We reassessed the prevailing view that more training results in better memory performance and found that 24 h memory retention can be indistinguishable after single-trial and multiple-trial conditioning in individuals. We explain how inter-individual differences in learning can be accommodated within the Rescorla-Wagner theory of associative learning. In both data-analysis and modeling we demonstrate how the conflict between population-level and single-animal perspectives on learning and memory can be disentangled.

The content of compound conditioning.

PubMed

Harris, Justin A; Andrew, Benjamin J; Livesey, Evan J

2012-04-01

In three experiments using Pavlovian conditioning of magazine approach, rats were trained with a compound stimulus, AB, and were concurrently trained with stimulus B on its own. The reinforcement rate of B, rB, was either 1/2, 2/3, or 2/5 of rAB. After extended training, the conditioning strength of A was assessed using probe trials in which A was presented alone. Responding during A was compared with that during AB, B, and a third stimulus, C, for which rC = rAB - rB. In each experiment, the rats' response rate during A was almost identical to that during C (and during B, when rB = 1/2rAB). This suggests that, during AB conditioning, the rats had learned about rA as being equal to [rAB - rB], and implies that the content of their learning was a linear function of r. The findings provide strong support for rate-based models of conditioning (e.g., Gallistel & Gibbon, 2000). They are also consistent with the associative account of learning defined in the Rescorla and Wagner (1972) model, but only if the learning rate during reinforcement equals that during nonreinforcement. (c) 2012 APA, all rights reserved.

Rapid learning dynamics in individual honeybees during classical conditioning

PubMed Central

Pamir, Evren; Szyszka, Paul; Scheiner, Ricarda; Nawrot, Martin P.

2014-01-01

Associative learning in insects has been studied extensively by a multitude of classical conditioning protocols. However, so far little emphasis has been put on the dynamics of learning in individuals. The honeybee is a well-established animal model for learning and memory. We here studied associative learning as expressed in individual behavior based on a large collection of data on olfactory classical conditioning (25 datasets, 3298 animals). We show that the group-averaged learning curve and memory retention score confound three attributes of individual learning: the ability or inability to learn a given task, the generally fast acquisition of a conditioned response (CR) in learners, and the high stability of the CR during consecutive training and memory retention trials. We reassessed the prevailing view that more training results in better memory performance and found that 24 h memory retention can be indistinguishable after single-trial and multiple-trial conditioning in individuals. We explain how inter-individual differences in learning can be accommodated within the Rescorla–Wagner theory of associative learning. In both data-analysis and modeling we demonstrate how the conflict between population-level and single-animal perspectives on learning and memory can be disentangled. PMID:25309366

Ab initio/GIAO-CCSD(T) (13)C NMR study of the rearrangement and dynamic aspects of rapidly equilibrating tertiary carbocations, C6H13(+) and C7H15(+).

PubMed

Olah, George A; Prakash, G K Surya; Rasul, Golam

2016-01-05

The rearrangement pathways of the equilibrating tertiary carbocations, 2,3-dimethyl-2-butyl cation (C6H13(+), 1), 2,3,3-trimethyl-2-butyl cation (C7H15(+), 5) and 2,3-dimethyl-2-pentyl cation (C7H15(+), 8 and 9) were investigated using the ab initio/GIAO-CCSD(T) (13)C NMR method. Comparing the calculated and experimental (13)C NMR chemical shifts of a series of carbocations indicates that excellent prediction of δ(13)C could be achieved through scaling. In the case of symmetrical equilibrating cations (1 and 5) the Wagner-Meerwein 1,2-hydride and 1,2-methide shifts, respectively, produce the same structure. This indicates that the overall (13)C NMR chemical shifts are conserved and independent of temperature. However, in the case of unsymmetrical equilibrating cations (8 and 9) the Wagner-Meerwein shift produces different tertiary structures, which have slightly different thermodynamic stabilities and, thus, different spectra. At the MP4(SDTQ)/cc-pVTZ//MP2/cc-pVTZ + ZPE level structure 8 is only 90 calories/mol more stable than structure 9. Based on computed (13)C NMR chemical shift calculations, mole fractions of these isomers were determined by assuming the observed chemical shifts are due to the weighted average of the chemical shifts of the static ions. © 2015 Wiley Periodicals, Inc.

Polyolefin-blend/inorganic nanocomposites: Morphology, rheological and thermomechanical properties

NASA Astrophysics Data System (ADS)

Salcedo-Galan, Felipe

"V" to Transformative Lightness of Beings was a commission from Central Conservatory of China in Beijing. One of the requests was to use Wagners leitmotiv and inspiration of Milan Kunderas novel, Unbearable Lightness of Being. As you can see, "V" stands for " Valkyrie" the opera of the ring cycle. The four of Wagners leitmotiv I used are storm, ride of Valkyrie, Sieglinde representing love and sword. The leitmotiv can be divided into two categories, one contains very clear triads (sword and Sieglinde); one presents very prominent interval (storm and ride of Valkyrie). Other than leitmotiv, there are two more important materials. I developed two themes from the leitmotiv, based on the pitch material and character. The male theme is derived from ride of Valkyrie; the female theme from Sieglinde. The piece starts with Storm; and the two characters, male and female come after it. The war goddess Valkyrie joins in right away. Male and female have conversation with a gentler storm later, and here comes love, however ends with storm. Sword, the symbol of justice comes in having conversation with war goddess Valkyrie. War goddess Valkyrie dominants all most the whole second section with male and female occasionally soliloquize, however, love sings high up in the air. Justice sword cant help but join in. Every one shouts out loud their materials (opinions, prejudice etc.) at the last section toward the end. It finishes with love. Love unifies the chaotic world.

The Wagner-Nelson method can generate an accurate gastric emptying flow curve from CO2 data obtained by a 13C-labeled substrate breath test.

PubMed

Sanaka, Masaki; Yamamoto, Takatsugu; Ishii, Tarou; Kuyama, Yasushi

2004-01-01

In pharmacokinetics, the Wagner-Nelson (W-N) method can accurately estimate the rate of drug absorption from its urinary elimination rate. A stable isotope (13C) breath test attempts to estimate the rate of absorption of 13C, as an index of gastric emptying rate, from the rate of pulmonary elimination of 13CO2. The time-gastric emptying curve determined by the breath test is quite different from that determined by scintigraphy or ultrasonography. In this report, we have shown that the W-N method can adjust the difference. The W-N equation to estimate gastric emptying from breath data is as follows: the fractional cumulative amount of gastric contents emptied by time t = Abreath (t)/Abreath (infinity) + (1/0.65).d[Abreath (t)/Abreath (infinity) ]/dt, where Abreath (t) = the cumulative recovery of 13CO2 in breath by time t and Abreath ( infinity ) = the ultimate cumulative 13CO2 recovery. The emptying flow curve generated by ultrasonography was compared with that generated by the W-N method-adjusted breath test in 6 volunteers. The emptying curves by the W-N method were almost identical to those by ultrasound. The W-N method can generate an accurate emptying flow curve from 13CO2 data, and it can adjust the difference between ultrasonography and the breath test. Copyright 2004 S. Karger AG, Basel

Maxwell-Wagner Effect Applied to Microwave-Induced Self-Ignition: A Novel Approach for Carbon-Based Materials.

PubMed

Bizzi, Cezar A; Cruz, Sandra M; Schmidt, Lucas; Burrow, Robert A; Barin, Juliano S; Paniz, Jose N G; Flores, Erico M M

2018-04-03

A new method for analytical applications based on the Maxwell-Wagner effect is proposed. Considering the interaction of carbonaceous materials with an electromagnetic field in the microwave frequency range, a very fast heating is observed due to interfacial polarization that results in localized microplasma formation. Such effect was evaluated in this work using a monomode microwave system, and temperature was recorded using an infrared camera. For analytical applications, a closed reactor under oxygen pressure was evaluated. The combination of high temperature and oxidant atmosphere resulted in a very effective self-ignition reaction of sample, allowing its use as sample preparation procedure for further elemental analysis. After optimization, a high sample mass (up to 600 mg of coal and graphite) was efficiently digested using only 4 mol L -1 HNO 3 as absorbing solution. Several elements (Ba, Ca, Fe, K, Li, Mg, Na, and Zn) were determined by inductively coupled plasma optical emission spectrometry (ICP-OES). Accuracy was evaluated by using a certified reference material (NIST 1632b). Blanks were negligible, and only a diluted solution was required for analytes absorption preventing residue generation and making the proposed method in agreement with green chemistry recommendations. The feasibility of the proposed method for hard-to-digest materials, the minimization of reagent consumption, and the possibility of multi elemental analysis with lower blanks and better limits of detection can be considered as the main advantages of this method.

Do telemonitoring projects of heart failure fit the Chronic Care Model?

PubMed Central

Willemse, Evi; Adriaenssens, Jef; Dilles, Tinne; Remmen, Roy

2014-01-01

This study describes the characteristics of extramural and transmural telemonitoring projects on chronic heart failure in Belgium. It describes to what extent these telemonitoring projects coincide with the Chronic Care Model of Wagner. Background The Chronic Care Model describes essential components for high-quality health care. Telemonitoring can be used to optimise home care for chronic heart failure. It provides a potential prospective to change the current care organisation. Methods This qualitative study describes seven non-invasive home-care telemonitoring projects in patients with heart failure in Belgium. A qualitative design, including interviews and literature review, was used to describe the correspondence of these home-care telemonitoring projects with the dimensions of the Chronic Care Model. Results The projects were situated in primary and secondary health care. Their primary goal was to reduce the number of readmissions for chronic heart failure. None of these projects succeeded in a final implementation of telemonitoring in home care after the pilot phase. Not all the projects were initiated to accomplish all of the dimensions of the Chronic Care Model. A central role for the patient was sparse. Conclusion Limited financial resources hampered continuation after the pilot phase. Cooperation and coordination in telemonitoring appears to be major barriers but are, within primary care as well as between the lines of care, important links in follow-up. This discrepancy can be prohibitive for deployment of good chronic care. Chronic Care Model is recommended as basis for future. PMID:25114664

Do telemonitoring projects of heart failure fit the Chronic Care Model?

PubMed

Willemse, Evi; Adriaenssens, Jef; Dilles, Tinne; Remmen, Roy

2014-07-01

This study describes the characteristics of extramural and transmural telemonitoring projects on chronic heart failure in Belgium. It describes to what extent these telemonitoring projects coincide with the Chronic Care Model of Wagner. The Chronic Care Model describes essential components for high-quality health care. Telemonitoring can be used to optimise home care for chronic heart failure. It provides a potential prospective to change the current care organisation. This qualitative study describes seven non-invasive home-care telemonitoring projects in patients with heart failure in Belgium. A qualitative design, including interviews and literature review, was used to describe the correspondence of these home-care telemonitoring projects with the dimensions of the Chronic Care Model. The projects were situated in primary and secondary health care. Their primary goal was to reduce the number of readmissions for chronic heart failure. None of these projects succeeded in a final implementation of telemonitoring in home care after the pilot phase. Not all the projects were initiated to accomplish all of the dimensions of the Chronic Care Model. A central role for the patient was sparse. Limited financial resources hampered continuation after the pilot phase. Cooperation and coordination in telemonitoring appears to be major barriers but are, within primary care as well as between the lines of care, important links in follow-up. This discrepancy can be prohibitive for deployment of good chronic care. Chronic Care Model is recommended as basis for future.

Dynamical Vertex Approximation for the Hubbard Model

NASA Astrophysics Data System (ADS)

Toschi, Alessandro

A full understanding of correlated electron systems in the physically relevant situations of three and two dimensions represents a challenge for the contemporary condensed matter theory. However, in the last years considerable progress has been achieved by means of increasingly more powerful quantum many-body algorithms, applied to the basic model for correlated electrons, the Hubbard Hamiltonian. Here, I will review the physics emerging from studies performed with the dynamical vertex approximation, which includes diagrammatic corrections to the local description of the dynamical mean field theory (DMFT). In particular, I will first discuss the phase diagram in three dimensions with a special focus on the commensurate and incommensurate magnetic phases, their (quantum) critical properties, and the impact of fluctuations on electronic lifetimes and spectral functions. In two dimensions, the effects of non-local fluctuations beyond DMFT grow enormously, determining the appearance of a low-temperature insulating behavior for all values of the interaction in the unfrustrated model: Here the prototypical features of the Mott-Hubbard metal-insulator transition, as well as the existence of magnetically ordered phases, are completely overwhelmed by antiferromagnetic fluctuations of exponentially large extension, in accordance with the Mermin-Wagner theorem. Eventually, by a fluctuation diagnostics analysis of cluster DMFT self-energies, the same magnetic fluctuations are identified as responsible for the pseudogap regime in the holed-doped frustrated case, with important implications for the theoretical modeling of the cuprate physics.

NASA Day at the Capitol

NASA Image and Video Library

2009-02-19

Stennis Space Center leaders and guests visit with Mississippi Senate members in chambers during NASA Day at the Capitol events in Jackson on Feb. 19. Standing at the Senate podium (rear) is Mississippi Lt. Gov. Phil Bryant. Standing at the lectern below are (l to r): Sen. David Baria, D-Bay St. Louis; Partners for Stennis Chair Clay Wagner; NASA Shared Services Center Director Rick Arbuthnot; astronaut Rex Walheim; Stennis Space Center Director Gene Goldman; President Pro Tempore Billy Hewes, R-Gulfport; Sen. Ezell Lee, D-Picayune; and Sen. Tommy Gollott, R-Biloxi.

Heliotropium (Boraginaceae) in the Marquesas Islands (French Polynesia) with description of a new species

PubMed Central

Lorence, David H.; Wagner, Warren L.

2015-01-01

Abstract During the preparation of the Vascular Flora of the Marquesas Islands a new endemic species of Heliotropium L. (Boraginaceae) has come to light and is described herein: Heliotropium perlmanii Lorence & W. L. Wagner. It is known only from the island of Eiao and appears most closely related to Heliotropium marchionicum Decne., also endemic to the Marquesas and known from Nuku Hiva. An amended description of Heliotropium marchionicum and key to separate the Marquesan species are given and their differences discussed. PMID:25878554

Origin of the colossal dielectric permittivity and magnetocapacitance in LuFe2O4

NASA Astrophysics Data System (ADS)

Ren, P.; Yang, Z.; Zhu, W. G.; Huan, C. H. A.; Wang, L.

2011-04-01

We report the detailed study on the colossal dielectric constant and magnetocapacitance of LuFe2O4. The experimental results indicate that the large dielectric constant of LuFe2O4 is originated from two sources, (1) Maxwell Wagner-type contributions of depletion layers at grain boundaries and the interfaces between sample and contacts, (2) AC response of the constant phase element in the bulk. A detailed equivalent circuit analysis indicates that the conductivity variation can be responsible for the observed "magnetocapacitance."

Taxonomic reassessment of bats from Castelnau’s expedition to South America (1843–1847): Phyllostoma angusticeps Gervais, 1856 (Chiroptera, Phyllostomidae)

USGS Publications Warehouse

Arroyo-Cabrales, Joaquín; Gardner, Alfred; Sigé, Bernard; Catzeflis, Francois; McCarthy, Timothy J.

2017-01-01

Gervais, in 1856, described the bats collected during Castelnau’s expedition through South America (1843–1847). We report that Phyllostoma angusticeps (Gervais, 1856), long treated as a junior synonym of Phyllostomus discolor(Wagner, 1843), is not a representative of the genus Phyllostomus. In fact, as we demonstrate, it represents the taxon known as Trachops cirrhosus. We also provide a summary, in tabular form, of the genera and species first described by Gervais (1856).

Fluid Dynamics of Three-Dimensional Turbulent Shear Flows and Transition: Conference Proceedings of the Symposium of the Fluid Dynamics Panel Held in Cesme (Turkey) on 3-6 October 1988

DTIC Science & Technology

1989-04-01

1984), Herbert (1985, 1988), Singer ct al . (1986, 1987), and Saic (1985a,b, 1986). A renewed interest in problems of stability and transio iii swcpt...1981), Montoya et at. (1981), Harvey & Pride (1982), Pearce (1982a,b), Pearce et al . (1982), Tuttle & Maddalon (1982), Boeing Commercial Airplane...Company (1982, 1984), Etchberger (1983), Hanks et al . (1983), Wagner & Fischer (1983, 1984), Douglas Aircraft Company (1984), Holmes (1984), Runyan Ct al

The Role of FORSCOM (United States Army Forces Command) in the Reception and Care of Refugees from Cuba in the Continental United States

DTIC Science & Technology

1984-11-01

the military and civilian agencies involved because of the pronounced anti- social behavior of a large number of the refugees in the ...mission during the Korean War. It points out the impact of this extended support mission on the overall readiness of FORSCOM’s participating Active ani...Provost Marshal’s Office; and Mr. R. W. Wagner and SGM(Ret) S . J. Maxwell, FORSCOM Office of the Deputy Chief of Staff for Operations, for their

Patient satisfaction and high-reliability organizations: what's the connection?

PubMed

Kerfoot, Karlene

2007-01-01

So how do we get there? Wagner and Harter (2006) report that it is apparent that managers who can make all of this happen view their work beyond profitability. Their motivation is created from deeply held beliefs about the solemn responsibility of management for those around them. When we view the patient satisfaction scores on the public ally reported Web sites, we will have a clear view into how the organization has eliminated negative variability and has also managed to engage the hearts and minds of their employees and their patients.

Naval Research Logistics Quarterly. Volume 28. Number 2,

DTIC Science & Technology

1981-06-01

Milwaukee Arnoldo Hax, Massachusetts Institute of Technology James G. Taylor, Naval Postgraduate School Alan J. Hoffman, IBM Corporation Harvey M. Wagner...geieral distributiiins /t). If /-I itself i,, if’ phase Itpe with representation (Pr .R f then f14) .1 = exp Ux )4r cxp IRA ) R (A it X ’rI exp l/t) c...23. n = 2 and m = I1, n = 4 in respective CPI times of 23.26 sec and 10.28 sec on IBM 360/65. Kuenne and Soland’s 191 largest reported problem was

Using Nazarov Electrocyclization to Stage Chemoselective [1,2]-Migrations: Stereoselective Synthesis of Functionalized Cyclopentenones

PubMed Central

Lebœuf, David; Huang, Jie; Gandon, Vincent

2012-01-01

Highly functionalized cyclopentenones are prepared stereospecifically based on a chemoselective copper(II)-mediated Nazarov/Wagner-Meerwein rearrangement sequence. After the initial 4π electrocyclization, this reaction involves two sequential [1,2]-migrations depending upon both migratory ability and steric bulk of the substituents at C1 and C5. This sequence can be achieved by using a catalytic quantity of copper(II) in combination with a weak Lewis acid. The mechanism of the reaction is also supported by DFT computations. PMID:21953873

Jet-Like Flow and Thrust From a Flexible Flapping Foil in Stationary Fluid

DTIC Science & Technology

2009-12-29

considered as a movable hinge point which travels over the flap region resulting in differential flap portions, pulling and pushing the fluid about this 15...Fliegenflugel und Hypothesen uber zugeordnete instationare Stromungseffekte,” J. Comp. Physiol., vol. 133, pp. 351–355, 1979. [24] Rayner, J. M. V., “A vortex...ring by giving an impulse to a circular disk and then dissolving it away,” J. App. Phys., vol. 24, no. 1, pp. 104, 1953. 17 [28] Wagner H., “ Uber die

Dielectric properties of isolated adrenal chromaffin cells determined by microfluidic impedance spectroscopy.

PubMed

Sabuncu, A C; Stacey, M; Craviso, G L; Semenova, N; Vernier, P T; Leblanc, N; Chatterjee, I; Zaklit, J

2018-02-01

Knowledge of the dielectric properties of biological cells plays an important role in numerical models aimed at understanding how high intensity ultrashort nanosecond electric pulses affect the plasma membrane and the membranes of intracellular organelles. To this end, using electrical impedance spectroscopy, the dielectric properties of isolated, neuroendocrine adrenal chromaffin cells were obtained. Measured impedance data of the cell suspension, acquired between 1kHz and 20MHz, were fit into a combination of constant phase element and Cole-Cole models from which the effect of electrode polarization was extracted. The dielectric spectrum of each cell suspension was fit into a Maxwell-Wagner mixture model and the Clausius-Mossotti factor was obtained. Lastly, to extract the cellular dielectric parameters, the cell dielectric data were fit into a granular cell model representative of a chromaffin cell, which was based on the inclusion of secretory granules in the cytoplasm. Chromaffin cell parameters determined from this study were the cell and secretory granule membrane specific capacitance (1.22 and 7.10μF/cm 2 , respectively), the cytoplasmic conductivity, which excludes and includes the effect of intracellular membranous structures (1.14 and 0.49S/m, respectively), and the secretory granule milieu conductivity (0.35S/m). These measurements will be crucial for incorporating into numerical models aimed at understanding the differential poration effect of nanosecond electric pulses on chromaffin cell membranes. Copyright © 2017 Elsevier B.V. All rights reserved.

Evaluation of Apple Maturity with Two Types of Dielectric Probes.

PubMed

Kafarski, Marcin; Wilczek, Andrzej; Szypłowska, Agnieszka; Lewandowski, Arkadiusz; Pieczywek, Piotr; Janik, Grzegorz; Skierucha, Wojciech

2018-01-04

The observed dielectric spectrum of ripe apples in the last period of shelf-life was analyzed using a multipole dielectric relaxation model, which assumes three active relaxation processes: primary α-process (water relaxation) and two secondary processes caused by solid-water-ion interactions α' (bound water relaxations), as well as β' (Maxwell-Wagner effect). The performance of two designs of the dielectric probe was compared: a classical coaxial open-ended probe (OE probe) and an open-ended probe with a prolonged central conductor in a form of an antenna (OE-A-probe). The OE-A probe increases the measurement volume and consequently extends the range of applications to other materials, like granulated agricultural products, soils, or liquid suspensions. However, its measurement frequency range is limited as compared to the OE probe because, above 1.5 GHz, the probe with the antenna generates higher propagation modes and the applied calibrations and calculations are not sufficient. It was shown that data from measurements using the OE-A probe gave slightly stronger correlations with apples' quality parameters than using the typical OE probe. Additionally, we have compared twelve multipole fitting models with different combinations of poles (eight three-pole and four two-pole models). It was shown that the best fit is obtained using a two-pole model for data collected for the OE-A probe and a three-pole model for the OE probe, using only Cole-Cole poles in both cases.

Evaluation of Apple Maturity with Two Types of Dielectric Probes

PubMed Central

Kafarski, Marcin; Szypłowska, Agnieszka; Lewandowski, Arkadiusz; Pieczywek, Piotr; Janik, Grzegorz; Skierucha, Wojciech

2018-01-01

The observed dielectric spectrum of ripe apples in the last period of shelf-life was analyzed using a multipole dielectric relaxation model, which assumes three active relaxation processes: primary α-process (water relaxation) and two secondary processes caused by solid-water-ion interactions α’ (bound water relaxations), as well as β’ (Maxwell-Wagner effect). The performance of two designs of the dielectric probe was compared: a classical coaxial open-ended probe (OE probe) and an open-ended probe with a prolonged central conductor in a form of an antenna (OE-A-probe). The OE-A probe increases the measurement volume and consequently extends the range of applications to other materials, like granulated agricultural products, soils, or liquid suspensions. However, its measurement frequency range is limited as compared to the OE probe because, above 1.5 GHz, the probe with the antenna generates higher propagation modes and the applied calibrations and calculations are not sufficient. It was shown that data from measurements using the OE-A probe gave slightly stronger correlations with apples’ quality parameters than using the typical OE probe. Additionally, we have compared twelve multipole fitting models with different combinations of poles (eight three-pole and four two-pole models). It was shown that the best fit is obtained using a two-pole model for data collected for the OE-A probe and a three-pole model for the OE probe, using only Cole-Cole poles in both cases. PMID:29300324

A mesoscopic bridging scale method for fluids and coupling dissipative particle dynamics with continuum finite element method

PubMed Central

Kojic, Milos; Filipovic, Nenad; Tsuda, Akira

2012-01-01

A multiscale procedure to couple a mesoscale discrete particle model and a macroscale continuum model of incompressible fluid flow is proposed in this study. We call this procedure the mesoscopic bridging scale (MBS) method since it is developed on the basis of the bridging scale method for coupling molecular dynamics and finite element models [G.J. Wagner, W.K. Liu, Coupling of atomistic and continuum simulations using a bridging scale decomposition, J. Comput. Phys. 190 (2003) 249–274]. We derive the governing equations of the MBS method and show that the differential equations of motion of the mesoscale discrete particle model and finite element (FE) model are only coupled through the force terms. Based on this coupling, we express the finite element equations which rely on the Navier–Stokes and continuity equations, in a way that the internal nodal FE forces are evaluated using viscous stresses from the mesoscale model. The dissipative particle dynamics (DPD) method for the discrete particle mesoscale model is employed. The entire fluid domain is divided into a local domain and a global domain. Fluid flow in the local domain is modeled with both DPD and FE method, while fluid flow in the global domain is modeled by the FE method only. The MBS method is suitable for modeling complex (colloidal) fluid flows, where continuum methods are sufficiently accurate only in the large fluid domain, while small, local regions of particular interest require detailed modeling by mesoscopic discrete particles. Solved examples – simple Poiseuille and driven cavity flows illustrate the applicability of the proposed MBS method. PMID:23814322

A model-based analysis of impulsivity using a slot-machine gambling paradigm

PubMed Central

Paliwal, Saee; Petzschner, Frederike H.; Schmitz, Anna Katharina; Tittgemeyer, Marc; Stephan, Klaas E.

2014-01-01

Impulsivity plays a key role in decision-making under uncertainty. It is a significant contributor to problem and pathological gambling (PG). Standard assessments of impulsivity by questionnaires, however, have various limitations, partly because impulsivity is a broad, multi-faceted concept. What remains unclear is which of these facets contribute to shaping gambling behavior. In the present study, we investigated impulsivity as expressed in a gambling setting by applying computational modeling to data from 47 healthy male volunteers who played a realistic, virtual slot-machine gambling task. Behaviorally, we found that impulsivity, as measured independently by the 11th revision of the Barratt Impulsiveness Scale (BIS-11), correlated significantly with an aggregate read-out of the following gambling responses: bet increases (BIs), machines switches (MS), casino switches (CS), and double-ups (DUs). Using model comparison, we compared a set of hierarchical Bayesian belief-updating models, i.e., the Hierarchical Gaussian Filter (HGF) and Rescorla–Wagner reinforcement learning (RL) models, with regard to how well they explained different aspects of the behavioral data. We then examined the construct validity of our winning models with multiple regression, relating subject-specific model parameter estimates to the individual BIS-11 total scores. In the most predictive model (a three-level HGF), the two free parameters encoded uncertainty-dependent mechanisms of belief updates and significantly explained BIS-11 variance across subjects. Furthermore, in this model, decision noise was a function of trial-wise uncertainty about winning probability. Collectively, our results provide a proof of concept that hierarchical Bayesian models can characterize the decision-making mechanisms linked to the impulsive traits of an individual. These novel indices of gambling mechanisms unmasked during actual play may be useful for online prevention measures for at-risk players and future assessments of PG. PMID:25071497

Results of borehole geophysical logging and aquifer-isolation tests conducted in the John Wagner and Sons, Inc. former production well, Ivyland, Pennsylvania

USGS Publications Warehouse

Sloto, Ronald A.

1997-01-01

A suite of borehole geophysical logs and heat-pulse-flowmeter measurements run in the former production well at the John Wagner and Sons, Inc. plant indicate two zones of borehole flow. In the upper part of the well, water enters the borehole through a fracture at 90 ft (feet) below floor level, moves upward, and exits the borehole through a fracture at 72 ft below floor level. Water also enters the borehole through fractures at 205-213, 235, and 357 ft below floor level; moves downward; and exits the borehole through fractures at 450-459, 468-470, and 483-490 ft below floor level. Five zones were selected for aquifer-isolation (packer) tests on the basis of borehole geophysical logs. The zones were isolated using a straddle-packer assembly. The lowermost three zones (below 248, 223 to 248, and 198 to 223 ft below floor level) were hydraulically isolated from zones above and below. Specific capacities were 0.12, 0.034, and 0.15 gallons per minute per foot, respectively. The hydrograph from zone 2 (223 to 248 ft below floor level) showed interference from a nearby pumping well. For the upper two zones (81 to 106 and 57 to 81 ft below floor level), similar drawdowns in the isolated zone and the zones above and below the isolated zone indicate that these fractures are hydraulically connected outside the borehole in the unconfined part of the Stockton Formation. The specific capacity of zones 4 and 5 are similar—0.82 and 0.61, respectively.

Systematic heat flow measurements across the Wagner Basin, northern Gulf of California

NASA Astrophysics Data System (ADS)

Neumann, Florian; Negrete-Aranda, Raquel; Harris, Robert N.; Contreras, Juan; Sclater, John G.; González-Fernández, Antonio

2017-12-01

A primary control on the geodynamics of rifting is the thermal regime. To better understand the geodynamics of rifting in the northern Gulf of California we systematically measured heat-flow across the Wagner Basin, a tectonically active basin that lies near the southern terminus of the Cerro Prieto fault. The heat flow profile is 40 km long, has a nominal measurement spacing of ∼1 km, and is collocated with a seismic reflection profile. Heat flow measurements were made with a 6.5-m violin-bow probe. Although heat flow data were collected in shallow water, where there are significant temporal variations in bottom water temperature, we use CTD data collected over many years to correct our measurements to yield accurate values of heat flow. After correction for bottom water temperature, the mean and standard deviation of heat flow across the western, central, and eastern parts of the basin are 220 ± 60, 99 ± 14, 889 ± 419 mW m-2, respectively. Corrections for sedimentation would increase measured heat flow across the central part of basin by 40 to 60%. We interpret the relatively high heat flow and large variability on the western and eastern flanks in terms of upward fluid flow at depth below the seafloor, whereas the lower and more consistent values across the central part of the basin are suggestive of conductive heat transfer. Moreover, heat flow across the central basin is consistent with gabbroic underplating at a depth of 15 km and suggests that continental rupture here has not gone to completion.

The second known specimen of Monodelphis unistriata (Wagner) (Mammalia: Didelphimorphia), with redescription of the species and phylogenetic analysis.

PubMed

Pine, Ronald H; Flores, David A; Bauer, Kurt

2013-01-01

Very little information exists relevant to the species grouping and phylogenetic relationships of the opossum genus Monodelphis Burnett. Of the clearly distinct named species, the least information is available for M. unistriata (Wagner), one of the world's most poorly known species of mammals. Extant specimens consist of the Brazilian holotype of a skin now without a skull and dating from almost 200 years ago, and a second specimen with skin and incomplete skull dating from over a hundred years ago and from Argentina. The most recent published notes on the holotype date from well over half a century ago and, all told, such notes, the earliest dating from 1842, add up to a highly fragmentary and contradictory picture. No observations whatsoever have ever been published for the second and more complete specimen. Also, no hypotheses have ever been made concerning the intrageneric affinities of M. unistriata and such affinities have also been obscure throughout the genus. Herein, we provide a detailed redescription of M. unistriata, the first published images of specimens, and the first account, beyond the previous few most vague and incomplete remarks, of the morphology of the skull. In an effort to ascertain the phylogenetic affinities of M. unistriata, we performed a combined molecular (cytochrome b) and nonmolecular (postcranial, cranial, integument, and karyotypic characters) parsimony analysis incorporating 27 species of didelphids, including 11 of Monodelphis. Our results strongly support the monophyly of Monodelphis, and place M. unistriata as sister group to M. iheringi, among the included species.

Oxygen Permeability and Grain-Boundary Diffusion Applied to Alumina Scales

NASA Technical Reports Server (NTRS)

Smialek, James L.; Jacobson, Nathan S.; Gleeson, Brian; Hovis, David B.; Heuer, Arthur H.

2013-01-01

High-temperature oxygen permeability measurements had determined grain-boundary diffusivities (deltaD(sub gb)) in bulk polycrystalline alumina (Wada, Matsudaira, and Kitaoka). They predict that oxygen deltaD(sub gb,O) varies with oxygen pressure as P(O2)(sup -1/6) at low pressure whereas aluminum deltaD(sub gb),Al varies with P(O2)(sup +3/16) at high pressure. These relations were used to evaluate alumina scale growth in terms of diffusivity and grain size. A modified Wagner treatment for dominant inward oxygen growth produces the concise solution: ?(sub i) = k(sub p,i)×G(sub i) = 12 deltaD(sub gb,O,int), where ?(sub i) is a constant and k(sub p,i) and G(sub i) refer to instantaneous values of the scale parabolic growth constant and grain size, respectively. A commercial FeCrAl(Zr) alloy was oxidized at 1100 to 1400 degC to determine k(sub p,i), interfacial grain size, ?, and thus deltaD(sub gb,O,int). The deltaD(sub gb,O,int) values predicted from oxidation at (375 kJ/mole) were about 20 times less than those obtained above (at 298 kJ/mole), but closer than extrapolations from high-temperature bulk measurements. The experimental oxidation results agree with similar FeCrAl(X) studies, especially where both k(sub p,i) and G(sub i) were characterized. This complete approach accounts for temperature-sensitive oxidation effects of grain enlargement, equilibrium interface pressure variation, and grain-boundary diffusivity.

Social anxiety is characterized by biased learning about performance and the self.

PubMed

Koban, Leonie; Schneider, Rebecca; Ashar, Yoni K; Andrews-Hanna, Jessica R; Landy, Lauren; Moscovitch, David A; Wager, Tor D; Arch, Joanna J

2017-12-01

People learn about their self from social information, and recent work suggests that healthy adults show a positive bias for learning self-related information. In contrast, social anxiety disorder (SAD) is characterized by a negative view of the self, yet what causes and maintains this negative self-view is not well understood. Here the authors use a novel experimental paradigm and computational model to test the hypothesis that biased social learning regarding self-evaluation and self-feelings represents a core feature that distinguishes adults with SAD from healthy controls. Twenty-one adults with SAD and 35 healthy controls (HCs) performed a speech in front of 3 judges. They subsequently evaluated themselves and received performance feedback from the judges and then rated how they felt about themselves and the judges. Affective updating (i.e., change in feelings about the self over time, in response to feedback from the judges) was modeled using an adapted Rescorla-Wagner learning model. HCs demonstrated a positivity bias in affective updating, which was absent in SAD. Further, self-performance ratings revealed group differences in learning from positive feedback-a difference that endured at an average of 1 year follow up. These findings demonstrate the presence and long-term endurance of positively biased social learning about the self among healthy adults, a bias that is absent or reversed among socially anxious adults. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

High-Throughput Study of Diffusion and Phase Transformation Kinetics of Magnesium-Based Systems for Automotive Cast Magnesium Alloys

DOE Office of Scientific and Technical Information (OSTI.GOV)

Luo, Alan A; Zhao, Ji-Cheng; Riggi, Adrienne

The objective of the proposed study is to establish a scientific foundation on kinetic modeling of diffusion, phase precipitation, and casting/solidification, in order to accelerate the design and optimization of cast magnesium (Mg) alloys for weight reduction of U.S. automotive fleet. The team has performed the following tasks: 1) study diffusion kinetics of various Mg-containing binary systems using high-throughput diffusion multiples to establish reliable diffusivity and mobility databases for the Mg-aluminum (Al)-zinc (Zn)-tin (Sn)-calcium (Ca)-strontium (Sr)-manganese (Mn) systems; 2) study the precipitation kinetics (nucleation, growth and coarsening) using both innovative dual-anneal diffusion multiples and cast model alloys to provide largemore » amounts of kinetic data (including interfacial energy) and microstructure atlases to enable implementation of the Kampmann-Wagner numerical model to simulate phase transformation kinetics of non-spherical/non-cuboidal precipitates in Mg alloys; 3) implement a micromodel to take into account back diffusion in the solid phase in order to predict microstructure and microsegregation in multicomponent Mg alloys during dendritic solidification especially under high pressure die-casting (HPDC) conditions; and, 4) widely disseminate the data, knowledge and information using the Materials Genome Initiative infrastructure (http://www.mgidata.org) as well as publications and digital data sharing to enable researchers to identify new pathways/routes to better cast Mg alloys.« less

Altered neural encoding of prediction errors in assault-related posttraumatic stress disorder.

PubMed

Ross, Marisa C; Lenow, Jennifer K; Kilts, Clinton D; Cisler, Josh M

2018-05-12

Posttraumatic stress disorder (PTSD) is widely associated with deficits in extinguishing learned fear responses, which relies on mechanisms of reinforcement learning (e.g., updating expectations based on prediction errors). However, the degree to which PTSD is associated with impairments in general reinforcement learning (i.e., outside of the context of fear stimuli) remains poorly understood. Here, we investigate brain and behavioral differences in general reinforcement learning between adult women with and without a current diagnosis of PTSD. 29 adult females (15 PTSD with exposure to assaultive violence, 14 controls) underwent a neutral reinforcement-learning task (i.e., two arm bandit task) during fMRI. We modeled participant behavior using different adaptations of the Rescorla-Wagner (RW) model and used Independent Component Analysis to identify timecourses for large-scale a priori brain networks. We found that an anticorrelated and risk sensitive RW model best fit participant behavior, with no differences in computational parameters between groups. Women in the PTSD group demonstrated significantly less neural encoding of prediction errors in both a ventral striatum/mPFC and anterior insula network compared to healthy controls. Weakened encoding of prediction errors in the ventral striatum/mPFC and anterior insula during a general reinforcement learning task, outside of the context of fear stimuli, suggests the possibility of a broader conceptualization of learning differences in PTSD than currently proposed in current neurocircuitry models of PTSD. Copyright © 2018 Elsevier Ltd. All rights reserved.

Assessing the high frequency behavior of non-polarizable electrodes for spectral induced polarization measurements

NASA Astrophysics Data System (ADS)

Abdulsamad, Feras; Florsch, Nicolas; Schmutz, Myriam; Camerlynck, Christian

2016-12-01

During the last decades, the usage of spectral induced polarization (SIP) measurements in hydrogeology and detecting environmental problems has been extensively increased. However, the physical mechanisms which are responsible for the induced polarization response over the usual frequency range (typically 1 mHz to 10-20 kHz) require better understanding. The phase shift observed at high frequencies is sometimes attributed to the so-called Maxwell-Wagner polarization which takes place when charges cross an interface. However, SIP measurements of tap water show a phase shift at frequencies higher than 1 kHz, where no Maxwell-Wagner polarization may occur. In this paper, we enlighten the possible origin of this phase shift and deduce its likely relationship with the types of the measuring electrodes. SIP Laboratory measurements of tap water using different types of measuring electrodes (polarizable and non-polarizable electrodes) are carried out to detect the origin of the phase shift at high frequencies and the influence of the measuring electrodes types on the observed complex resistivity. Sodium chloride is used to change the conductivity of the medium in order to quantify the solution conductivity role. The results of these measurements are clearly showing the impact of the measuring electrodes type on the measured phase spectrum while the influence on the amplitude spectrum is negligible. The phenomenon appearing on the phase spectrum at high frequency (> 1 kHz) whatever the electrode type is, the phase shows an increase compared to the theoretical response, and the discrepancy (at least in absolute value) increases with frequency, but it is less severe when medium conductivity is larger. Additionally, the frequency corner is shifted upward in frequency. The dependence of this phenomenon on the conductivity and the measuring electrodes type (electrode-electrolyte interface) seems to be due to some dielectric effects (as an electrical double layer of small relaxation time formed at the electrodes interface). Therefore, this dielectric response should be taken into account at high frequency to better analytically separate the medium own response from that linked to the measuring electrodes used. We modeled this effect by adding a capacitance connected in parallel with the traditional equivalent electric circuit used to describe the dielectric response of medium.

Understanding and Predicting Urban Propagation Losses

DTIC Science & Technology

2009-09-01

6. Extended Hata Model ..........................22 7. Modified Hata Model ..........................22 8. Walfisch – Ikegami Model...39 4. COST (Extended) Hata Model ...................40 5. Modified Hata Model ..........................41 6. Walfisch- Ikegami Model...47 1. Scenario One – Walfisch- Ikegami Model ........51 2. Scenario Two – Modified Hata Model ...........52 3. Scenario Three – Urban Hata

The breakup of large tabular icebergs - direct observations and theoretical considerations

NASA Astrophysics Data System (ADS)

Wadhams, P.

2013-12-01

Peter Wadhams and Till Wagner Dept. of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge. We review the factors governing the stability, dynamics and decay of icebergs and describe areas where current models are inadequate. These include questions such as draft changes in capsizing icebergs; iceberg trajectory modelling; the melt rate of the ice underside and ways of reducing it; and wave-induced flexure and its role in the break-up of tabular icebergs. In July 2012 the authors worked on a very large (42 sq km) tabular iceberg in Baffin Bay, which had calved from the Petermann Glacier in NW Greenland. We measured incoming swell spectrum and the iceberg response; also the role of buoyancy forces due to erosion of a waterline wave cut and the creation of an underwater ram. The iceberg broke up while we were on it, allowing an instrumental measurement of the calving event. The experiments were included in the BBC-2 film 'Operation Iceberg' shown on Nov 1 2012 and repeated on Nov 18. We conclude that two processes interacted in the break-up event: increased bending stress due to buoyancy of underwater rams; and direct flexural strain due to incidence of ocean swell. Implications for icebergs in the open sea are estimated.

The Promoting Effective Advance Care for Elders (PEACE) randomized pilot study: theoretical framework and study design.

PubMed

Allen, Kyle R; Hazelett, Susan E; Radwany, Steven; Ertle, Denise; Fosnight, Susan M; Moore, Pamela S

2012-04-01

Practice guidelines are available for hospice and palliative medicine specialists and geriatricians. However, these guidelines do not adequately address the needs of patients who straddle the 2 specialties: homebound chronically ill patients. The purpose of this article is to describe the theoretical basis for the Promoting Effective Advance Care for Elders (PEACE) randomized pilot study. PEACE is an ongoing 2-group randomized pilot study (n=80) to test an in-home interdisciplinary care management intervention that combines palliative care approaches to symptom management, psychosocial and emotional support, and advance care planning with geriatric medicine approaches to optimizing function and addressing polypharmacy. The population comprises new enrollees into PASSPORT, Ohio's community-based, long-term care Medicaid waiver program. All PASSPORT enrollees have geriatric/palliative care crossover needs because they are nursing home eligible. The intervention is based on Wagner's Chronic Care Model and includes comprehensive interdisciplinary care management for these low-income frail elders with chronic illnesses, uses evidence-based protocols, emphasizes patient activation, and integrates with community-based long-term care and other community agencies. Our model, with its standardized, evidence-based medical and psychosocial intervention protocols, will transport easily to other sites that are interested in optimizing outcomes for community-based, chronically ill older adults. © Mary Ann Liebert, Inc.

A stochastic multi-scale method for turbulent premixed combustion

NASA Astrophysics Data System (ADS)

Cha, Chong M.

2002-11-01

The stochastic chemistry algorithm of Bunker et al. and Gillespie is used to perform the chemical reactions in a transported probability density function (PDF) modeling approach of turbulent combustion. Recently, Kraft & Wagner have demonstrated a 100-fold gain in computational speed (for a 100 species mechanism) using the stochastic approach over the conventional, direct integration method of solving for the chemistry. Here, the stochastic chemistry algorithm is applied to develop a new transported PDF model of turbulent premixed combustion. The methodology relies on representing the relevant spatially dependent physical processes as queuing events. The canonical problem of a one-dimensional premixed flame is used for validation. For the laminar case, molecular diffusion is described by a random walk. For the turbulent case, one of two different material transport submodels can provide the necessary closure: Taylor dispersion or Kerstein's one-dimensional turbulence approach. The former exploits ``eddy diffusivity'' and hence would be much more computationally tractable for practical applications. Various validation studies are performed. Results from the Monte Carlo simulations compare well to asymptotic solutions of laminar premixed flames, both with and without high activation temperatures. The correct scaling of the turbulent burning velocity is predicted in both Damköhler's small- and large-scale turbulence limits. The effect of applying the eddy diffusivity concept in the various regimes is discussed.

Probing Novel Microstructural Evolution Mechanisms in Aluminum Alloys Using 4D Nanoscale Characterization

DOE PAGES

Kaira, C. Shashank; De Andrade, V.; Singh, Sudhanshu S.; ...

2017-09-14

Dispersions of nanoscale precipitates in metallic alloys have been known to play a key role in strengthening, by increasing their strain hardenability and providing resistance to deformation. Although these phenomena have been extensively investigated in the last century, the traditional approaches employed in the past have not rendered an authoritative microstructural understanding in such materials. The effect of the precipitates’ inherent complex morphology and their 3D spatial distribution on evolution and deformation behavior have often been precluded. This study reports, for the first time, implementation of synchrotron-based hard X-ray nanotomography in Al–Cu alloys to measure kinetics of different nanoscale phasesmore » in 3D, and reveals insights behind some of the observed novel phase transformation reactions. The experimental results of the present study reconcile with coarsening models from the Lifshitz–Slyozov–Wagner theory to an unprecedented extent, thereby establishing a new paradigm for thermodynamic analysis of precipitate assemblies. Lastly, this study sheds light on the possibilities for establishing new theories for dislocation–particle interactions, based on the limitations of using the Orowan equation in estimating precipitation strengthening.« less

Studying dielectric mechanism and magnetization of double perovskite Gd2NiMnO6 ceramic

NASA Astrophysics Data System (ADS)

Mohapatra, S. R.; Sahu, B.; Kaushik, S. D.; Singh, A. K.

2016-05-01

In the present work, the structure, dielectric and magnetic properties of Gd2NiMnO6 double perovskite have been studied. X-Ray diffraction study reveals the phase pure formation of the material that crystallizes into monoclinic phase (space group 'P21/n'). Surface morphology depicts heterogeneous grain distribution with average grain size of ~1 µm. Temperature dependent (50 - 330 K) dielectric measurements at different frequencies (0.5 - 50 kHz) relate to Maxwell-Wagner interfacial polarization model. Giant dielectric constant at 1 kHz for 300 K (ɛ' ~1900) is noticed as compared to that of 50 K (ɛ' ~10) coupled with a peak shift in tan loss towards higher temperature with frequency. The activation energy (0.24 eV) obtained using Arrhenius relation for thermally activated relaxor behavior of the material signifies an electron hopping mechanism between Ni2+ and Mn4+ cations. Lastly, M-H study shows `S' shape hysteresis loop at 50 K with remnant magnetization (Mr) of 0.72 µB/f.u. along with a linear plot for 300 K which reveals paramagnetic nature of the material.

Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte

NASA Astrophysics Data System (ADS)

Lim, Dae-Kwang; Im, Ha-Ni; Song, Sun-Ju

2016-01-01

The maximum power density of SOFC with 8YSZ electrolyte as the function of thickness was calculated by integrating partial conductivities of charge carriers under various DC bias conditions at a fixed oxygen chemical potential gradient at both sides of the electrolyte. The partial conductivities were successfully taken using the Hebb-Wagner polarization method as a function of temperature and oxygen partial pressure, and the spatial distribution of oxygen partial pressure across the electrolyte was calculated based on Choudhury and Patterson’s model by considering zero electrode polarization. At positive voltage conditions corresponding to SOFC and SOEC, the high conductivity region was expanded, but at negative cell voltage condition, the low conductivity region near n-type to p-type transition was expanded. In addition, the maximum power density calculated from the current-voltage characteristic showed approximately 5.76 W/cm2 at 700 oC with 10 μm thick-8YSZ, while the oxygen partial pressure of the cathode and anode sides maintained ≈0.21 and 10-22 atm.

Probing Novel Microstructural Evolution Mechanisms in Aluminum Alloys Using 4D Nanoscale Characterization

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kaira, C. Shashank; De Andrade, V.; Singh, Sudhanshu S.

Dispersions of nanoscale precipitates in metallic alloys have been known to play a key role in strengthening, by increasing their strain hardenability and providing resistance to deformation. Although these phenomena have been extensively investigated in the last century, the traditional approaches employed in the past have not rendered an authoritative microstructural understanding in such materials. The effect of the precipitates’ inherent complex morphology and their 3D spatial distribution on evolution and deformation behavior have often been precluded. This study reports, for the first time, implementation of synchrotron-based hard X-ray nanotomography in Al–Cu alloys to measure kinetics of different nanoscale phasesmore » in 3D, and reveals insights behind some of the observed novel phase transformation reactions. The experimental results of the present study reconcile with coarsening models from the Lifshitz–Slyozov–Wagner theory to an unprecedented extent, thereby establishing a new paradigm for thermodynamic analysis of precipitate assemblies. Lastly, this study sheds light on the possibilities for establishing new theories for dislocation–particle interactions, based on the limitations of using the Orowan equation in estimating precipitation strengthening.« less

Influence of Sm doping on structural and dielectric properties of Y{sub 1-x}Sm{sub x}MnO{sub 3} (x = 0, 0.10, 0.20) manganites

DOE Office of Scientific and Technical Information (OSTI.GOV)

Dar, Mashkoor Ahmad, E-mail: darmashkoor.phst@gmail.com; Dar, Hilal Ahmad; Varshney, Dinesh, E-mail: vdinesh33@rediffmail.com

2016-05-06

Structural and dielectric properties of polycrystalline YMnO{sub 3} (x = 0.0, 0.10 and 0.20) which was prepared by solid-state reaction route, have been investigated. The X-ray diffraction pattern reveals that all the samples are in single phase and show hexagonal structure with P63cm space group. The particle size decreases with increase in Sm doping while to that X-ray density increases with increasing x. The dielectric constant (ε’) of Y{sub 1-x}Sm{sub x}MnO{sub 3} measured in the frequency range 10 Hz to 1MHz is much higher at lower frequencies (≤ 1KHz) and its value decreases with enhanced frequency. At very high frequencies, ε’more » becomes frequency independent and is attributed to Maxwell Wagner type of interfacial polarization model. A very high value of dielectric constant ∼18642 is observed for x = 10%. The dielectric loss (tan δ) decreases wit increase in Sm doping.« less

On Madelung systems in nonlinear optics: A reciprocal invariance

NASA Astrophysics Data System (ADS)

Rogers, Colin; Malomed, Boris

2018-05-01

The role of the de Broglie-Bohm potential, originally established as central to Bohmian quantum mechanics, is examined for two canonical Madelung systems in nonlinear optics. In a seminal case, a Madelung system derived by Wagner et al. via the paraxial approximation and in which the de Broglie-Bohm potential is present is shown to admit a multi-parameter class of what are here introduced as "q-gaussons." In the limit, as the Tsallis parameter q → 1, the q-gaussons are shown to lead to standard gausson solitons, as admitted by the logarithmic nonlinear Schrödinger equation encapsulating the Madelung system. The q-gaussons are obtained for optical media with dual power-law refractive index. In the second case, a Madelung system originally derived via an eikonal approximation in the context of laser beam propagation and in which the de Broglie Bohm term is neglected is shown to admit invariance under a novel class of two-parameter class of reciprocal transformations. Model optical laws analogous to the celebrated Kármán-Tsien law of classical gas dynamics are introduced.

Computation of three-dimensional three-phase flow of carbon dioxide using a high-order WENO scheme

NASA Astrophysics Data System (ADS)

Gjennestad, Magnus Aa.; Gruber, Andrea; Lervåg, Karl Yngve; Johansen, Øyvind; Ervik, Åsmund; Hammer, Morten; Munkejord, Svend Tollak

2017-11-01

We have developed a high-order numerical method for the 3D simulation of viscous and inviscid multiphase flow described by a homogeneous equilibrium model and a general equation of state. Here we focus on single-phase, two-phase (gas-liquid or gas-solid) and three-phase (gas-liquid-solid) flow of CO2 whose thermodynamic properties are calculated using the Span-Wagner reference equation of state. The governing equations are spatially discretized on a uniform Cartesian grid using the finite-volume method with a fifth-order weighted essentially non-oscillatory (WENO) scheme and the robust first-order centered (FORCE) flux. The solution is integrated in time using a third-order strong-stability-preserving Runge-Kutta method. We demonstrate close to fifth-order convergence for advection-diffusion and for smooth single- and two-phase flows. Quantitative agreement with experimental data is obtained for a direct numerical simulation of an air jet flowing from a rectangular nozzle. Quantitative agreement is also obtained for the shape and dimensions of the barrel shock in two highly underexpanded CO2 jets.

Electrical properties of dispersions of graphene in mineral oil

DOE Office of Scientific and Technical Information (OSTI.GOV)

Monteiro, O. R., E-mail: othon.monteiro@bakerhughes.com

2014-02-03

Dispersions of graphene in mineral oil have been prepared and electrical conductivity and permittivity have been measured. The direct current (DC) conductivity of the dispersions depends on the surface characteristics of the graphene platelets and followed a percolation model with a percolation threshold ranging from 0.05 to 0.1 wt. %. The difference in DC conductivities can be attributed to different states of aggregation of the graphene platelets and to the inter-particle electron transfer, which is affected by the surface radicals. The frequency-dependent conductivity (σ(ω)) and permittivity (ε(ω)) were also measured. The conductivity of dispersions with particle contents much greater than themore » percolation threshold remains constant and equal to the DC conductivity at low frequencies ω with and followed a power-law σ(ω)∝ ω{sup s} dependence at very high frequencies with s≈0.9. For dispersions with graphene concentration near the percolation threshold, a third regime was displayed at intermediate frequencies indicative of interfacial polarization consistent with Maxwell-Wagner effect typically observed in mixtures of two (or more) phases with very distinct electrical and dielectric properties.« less

Effect of neodymium substitution on the electric and dielectric properties of Mn-Ni-Zn ferrite

NASA Astrophysics Data System (ADS)

Agami, W. R.

2018-04-01

Ferrite samples of Mn0.5Ni0.1Zn0.4NdxFe2-xO4 (x = 0.0, 0.01, 0.02, 0.05, 0.075 and 0.1) have been prepared by usual ceramic method. The temperature and composition dependences of the dc electric resistivity (ρdc) were studied. The frequency and composition dependences of the ac electric resistivity (ρac) and dielectric parameters (dielectric constant ε' and dielectric loss ε'') have been investigated. ρdc was found to decrease with temperature for all samples while it increases with increasing Nd3+ concentration. On the other hand, ρac and the dielectric properties were found to decrease with increasing the frequency while ρac increases and both ε' and ε'' decrease with increasing Nd3+ concentration. These results were explained by the Maxwell-Wagner two-layer model and Koops's theory. The improvement in dc and ac electric resistivities shows that these prepared materials are valid for decreasing the eddy current losses at high frequencies, so they can be used in the fabrication of multilayer chip inductor (MLCI) devices.

Comparing dark matter models, modified Newtonian dynamics and modified gravity in accounting for galaxy rotation curves

NASA Astrophysics Data System (ADS)

Li, Xin; Tang, Li; Lin, Hai-Nan

2017-05-01

We compare six models (including the baryonic model, two dark matter models, two modified Newtonian dynamics models and one modified gravity model) in accounting for galaxy rotation curves. For the dark matter models, we assume NFW profile and core-modified profile for the dark halo, respectively. For the modified Newtonian dynamics models, we discuss Milgrom’s MOND theory with two different interpolation functions, the standard and the simple interpolation functions. For the modified gravity, we focus on Moffat’s MSTG theory. We fit these models to the observed rotation curves of 9 high-surface brightness and 9 low-surface brightness galaxies. We apply the Bayesian Information Criterion and the Akaike Information Criterion to test the goodness-of-fit of each model. It is found that none of the six models can fit all the galaxy rotation curves well. Two galaxies can be best fitted by the baryonic model without involving nonluminous dark matter. MOND can fit the largest number of galaxies, and only one galaxy can be best fitted by the MSTG model. Core-modified model fits about half the LSB galaxies well, but no HSB galaxies, while the NFW model fits only a small fraction of HSB galaxies but no LSB galaxies. This may imply that the oversimplified NFW and core-modified profiles cannot model the postulated dark matter haloes well. Supported by Fundamental Research Funds for the Central Universities (106112016CDJCR301206), National Natural Science Fund of China (11305181, 11547305 and 11603005), and Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China (Y5KF181CJ1)

[The unexplained death of Blandine Liszt Ollivier].

PubMed

Mabin, Dominique

2014-01-01

Franz Liszt's eldest daughter, Blandine Ollivier, died at the age of 26, two months after the birth of her son Daniel. The reasons of that death remain obscure. There are contradictions between the asserted good health of Blandine during her pregnancy and what was learnt later on through the publication in French of Richard Wagner's autobiography. He was the husband of Cosima who was herself Blandine's sister. We put forward some hypotheses that can be discussed; Blandine would have contracted a serious anemia of pregnancy, unknown, with a streptococcus septicemia in post partum; no sign or symptom in consideration of mastitis carcinosis.

The Electrochemical Behavior in Aqueous Media of Conducting Polymers. 2. The Insoluble Fractions Obtained on the Cu(II) Catalyzed Polymerization of (2,5-Dibromo-3-Group IV Substituted) Thiophenes.

DTIC Science & Technology

1986-07-30

Grignard compounds derived from 2,5-dibromothiophene and 2,5-dibromo-3- m-thyI thiophene have been reported by Yarmamctc’ et al. (20,21). After iodine...modification of the synthetic route by employing the 2,5-dilithiothiophenes in place of the bis- Grignard compounds. Subsequent anhydrous metal salts promoted...acknowledge the Lithium Corporation for • the donation of n-butyllithium reagent . •o. , References i. G. Wagner, Angew. Chem. Int. Ed. Engi., 20 361 (1981

greenland_summer_campaign

NASA Image and Video Library

2015-08-28

Laurence Smith, chair of geography at University of California, Los Angeles, deploys an autonomous drift boat equipped with several sensors in a meltwater river on the surface of the Greenland ice sheet on July 19, 2015. “Surface melting in Greenland has increased recently, and we lacked a rigorous estimate of the water volumes being produced and their transport,” said Tom Wagner, the cryosphere program scientist at NASA Headquarters in Washington. “NASA funds fieldwork like Smith’s because it helps us to interpret satellite data, and to extrapolate measurements from the local field sites to the larger ice sheet." Credit: NASA/Goddard/Jefferson Beck

Petition for the Administrator to Object to Title V Operating Permit for Fort Smallwood Complex Brandon Shores and H.A. Wagner Generating Stations

EPA Pesticide Factsheets

This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

76 FR 27239 - Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 172 Airplanes Modified by...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-11

... Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 172 Airplanes Modified by Supplemental Type... months for Cessna Aircraft Company (Cessna) Model 172 Airplanes modified by Supplemental Type Certificate...

Study of Maxwell–Wagner (M–W) relaxation behavior and hysteresis observed in bismuth titanate layered structure obtained by solution combustion synthesis using dextrose as fuel

DOE Office of Scientific and Technical Information (OSTI.GOV)

Subohi, Oroosa, E-mail: oroosa@gmail.com; Shastri, Lokesh; Kumar, G.S.

2014-01-01

Graphical abstract: X-ray diffraction studies show that phase formation and crystallinity was reached only after calcinations at 800 °C. Dielectric constant versus temperature curve shows ferroelectric to paraelectric transition temperature (T{sub c}) to be 650 °C. Complex impedance curves show deviation from Debye behavior. The material shows a thin PE Loop with low remnant polarization due to high conductivity in the as prepared sample. - Highlights: • Bi{sub 4}Ti{sub 3}O{sub 12} is synthesized using solution combustion technique with dextrose as fuel. • Dextrose has high reducing capacity (+24) and generates more no. of moles of gases. • Impedance studies showmore » that the sample follows Maxwell–Wagner relaxation behavior. • Shows lower remnant polarization due to higher c-axis ratio. - Abstract: Structural, dielectric and ferroelectric properties of bismuth titanate (Bi{sub 4}Ti{sub 3}O{sub 12}) obtained by solution combustion technique using dextrose as fuel is studied extensively in this paper. Dextrose is used as fuel as it has high reducing valancy and generates more number of moles of gases during the reaction. X-ray diffraction studies show that phase formation and crystallinity was reached only after calcinations at 800 °C. Dielectric constant versus temperature curve shows ferroelectric to paraelectric transition temperature (T{sub c}) to be 650 °C. The dielectric loss is very less (tan δ < 1) at lower temperatures but increases around T{sub c} due to structural changes in the sample. Complex impedance curves show deviation from Debye behavior. The material shows a thin PE Loop with low remnant polarization due to high conductivity in the as prepared sample.« less

Solid State Ionics: from Michael Faraday to green energy-the European dimension.

PubMed

Funke, Klaus

2013-08-01

Solid State Ionics has its roots essentially in Europe. First foundations were laid by Michael Faraday who discovered the solid electrolytes Ag 2 S and PbF 2 and coined terms such as cation and anion , electrode and electrolyte . In the 19th and early 20th centuries, the main lines of development toward Solid State Ionics, pursued in Europe, concerned the linear laws of transport, structural analysis, disorder and entropy and the electrochemical storage and conversion of energy. Fundamental contributions were then made by Walther Nernst, who derived the Nernst equation and detected ionic conduction in heterovalently doped zirconia, which he utilized in his Nernst lamp. Another big step forward was the discovery of the extraordinary properties of alpha silver iodide in 1914. In the late 1920s and early 1930s, the concept of point defects was established by Yakov Il'ich Frenkel, Walter Schottky and Carl Wagner, including the development of point-defect thermodynamics by Schottky and Wagner. In terms of point defects, ionic (and electronic) transport in ionic crystals became easy to visualize. In an 'evolving scheme of materials science', point disorder precedes structural disorder, as displayed by the AgI-type solid electrolytes (and other ionic crystals), by ion-conducting glasses, polymer electrolytes and nano-composites. During the last few decades, much progress has been made in finding and investigating novel solid electrolytes and in using them for the preservation of our environment, in particular in advanced solid state battery systems, fuel cells and sensors. Since 1972, international conferences have been held in the field of Solid State Ionics, and the International Society for Solid State Ionics was founded at one of them, held at Garmisch-Partenkirchen, Germany, in 1987.

[Risk factors for lower extremity amputation in patients with diabetic foot].

PubMed

Xu, B; Yang, C Z; Wu, S B; Zhang, D; Wang, L N; Xiao, L; Chen, Y; Wang, C R; Tong, A; Zhou, X F; Li, X H; Guan, X H

2017-01-01

Objective: To explore the risk factors for lower extremity amputation in patients with diabetic foot. Methods: The clinical data of 1 771 patients with diabetic foot at the Air Force General Hospital of PLA from November 2001 to April 2015 were retrospectively analyzed. The patients were divided into the non-amputation and amputation groups. Within the amputation group, subjects were further divided into the minor and major amputation subgroups. Binary logistic regression analyses were used to assess the association between risk factors and lower extremity amputation. Results: Among 1 771 patients with diabetic foot, 323 of them (18.24%) were in the amputation group (major amputation: 41; minor amputation: 282) and 1 448 (81.76%) in the non-amputation group. Compared with non-amputation patients, those in the amputation group had a longer hospital stay and higher estimated glomerular filtration rate(eGFR)levels. Fasting plasma glucose (FPG), glycosylated hemoglobin (HbA1c), C-reaction protein (CRP), ESR, ferritin, fibrinogen and WBC levels of the amputation group were higher, while hemoglobin albumin, transferrin, TC, TG, HDL-C and LDL-C were lower than those of the non-amputation group (all P <0.05). The proportion of hypertension(52.48% vs 59.98%), peripheral vascular disease (PAD)(68.11% vs 25.04%), and coronary heart disease(21.33% vs 28.71%)were different between the amputation and non-amputation groups (all P <0.05). Multivariable logistic regression analyses showed that Wagner's grade, PAD and CRP were the independent risk factors associated with lower extremity amputation in hospitalized patients with diabetic foot. Conclusion: Wagner's grade, ischemia of lower limbs and infection are closely associated with amputation of diabetic foot patients.

Solid State Ionics: from Michael Faraday to green energy—the European dimension

PubMed Central

Funke, Klaus

2013-01-01

Solid State Ionics has its roots essentially in Europe. First foundations were laid by Michael Faraday who discovered the solid electrolytes Ag2S and PbF2 and coined terms such as cation and anion, electrode and electrolyte. In the 19th and early 20th centuries, the main lines of development toward Solid State Ionics, pursued in Europe, concerned the linear laws of transport, structural analysis, disorder and entropy and the electrochemical storage and conversion of energy. Fundamental contributions were then made by Walther Nernst, who derived the Nernst equation and detected ionic conduction in heterovalently doped zirconia, which he utilized in his Nernst lamp. Another big step forward was the discovery of the extraordinary properties of alpha silver iodide in 1914. In the late 1920s and early 1930s, the concept of point defects was established by Yakov Il'ich Frenkel, Walter Schottky and Carl Wagner, including the development of point-defect thermodynamics by Schottky and Wagner. In terms of point defects, ionic (and electronic) transport in ionic crystals became easy to visualize. In an ‘evolving scheme of materials science’, point disorder precedes structural disorder, as displayed by the AgI-type solid electrolytes (and other ionic crystals), by ion-conducting glasses, polymer electrolytes and nano-composites. During the last few decades, much progress has been made in finding and investigating novel solid electrolytes and in using them for the preservation of our environment, in particular in advanced solid state battery systems, fuel cells and sensors. Since 1972, international conferences have been held in the field of Solid State Ionics, and the International Society for Solid State Ionics was founded at one of them, held at Garmisch-Partenkirchen, Germany, in 1987. PMID:27877585

Constitutive Modeling of High-Temperature Flow Behavior of an Nb Micro-alloyed Hot Stamping Steel

NASA Astrophysics Data System (ADS)

Zhang, Shiqi; Feng, Ding; Huang, Yunhua; Wei, Shizhong; Mohrbacher, Hardy; Zhang, Yue

2016-03-01

The thermal deformation behavior and constitutive models of an Nb micro-alloyed 22MnB5 steel were investigated by conducting isothermal uniaxial tensile tests at the temperature range of 873-1223 K with strain rates of 0.1-10 s-1. The results indicated that the investigated steel showed typical work hardening and dynamic recovery behavior during hot deformation, and the flow stress decreased with a decrease in strain rate and/or an increase in temperature. On the basis of the experimental data, the modified Johnson-Cook (modified JC), modified Norton-Hoff (modified NH), and Arrhenius-type (AT) constitutive models were established for the subject steel. However, the flow stress values predicted by these three models revealed some remarkable deviations from the experimental values for certain experimental conditions. Therefore, a new combined modified Norton-Hoff and Arrhenius-type constitutive model (combined modified NH-AT model), which accurately reflected both the work hardening and dynamic recovery behavior of the subject steel, was developed by introducing the modified parameter k ɛ. Furthermore, the accuracy of these constitutive models was assessed by the correlation coefficient, the average absolute relative error, and the root mean square error, which indicated that the flow stress values computed by the combined modified NH-AT model were highly consistent with the experimental values (R = 0.998, AARE = 1.63%, RMSE = 3.85 MPa). The result confirmed that the combined modified NH-AT model was suitable for the studied Nb micro-alloyed hot stamping steel. Additionally, the practicability of the new model was also verified using finite element simulations in ANSYS/LS-DYNA, and the results confirmed that the new model was practical and highly accurate.

Modified-BRISQUE as no reference image quality assessment for structural MR images.

PubMed

Chow, Li Sze; Rajagopal, Heshalini

2017-11-01

An effective and practical Image Quality Assessment (IQA) model is needed to assess the image quality produced from any new hardware or software in MRI. A highly competitive No Reference - IQA (NR - IQA) model called Blind/Referenceless Image Spatial Quality Evaluator (BRISQUE) initially designed for natural images were modified to evaluate structural MR images. The BRISQUE model measures the image quality by using the locally normalized luminance coefficients, which were used to calculate the image features. The modified-BRISQUE model trained a new regression model using MR image features and Difference Mean Opinion Score (DMOS) from 775 MR images. Two types of benchmarks: objective and subjective assessments were used as performance evaluators for both original and modified-BRISQUE models. There was a high correlation between the modified-BRISQUE with both benchmarks, and they were higher than those for the original BRISQUE. There was a significant percentage improvement in their correlation values. The modified-BRISQUE was statistically better than the original BRISQUE. The modified-BRISQUE model can accurately measure the image quality of MR images. It is a practical NR-IQA model for MR images without using reference images. Copyright © 2017 Elsevier Inc. All rights reserved.

75 FR 66700 - Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 402C Airplanes Modified by...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-29

... Company (Cessna) Model 402C Airplanes Modified by Supplemental Type Certificate (STC) SA927NW and Model... Company (Cessna) Model 402C airplanes modified by Supplemental Type Certificate (STC) SA927NW and Model... products of the same type design. Proposed AD Requirements This proposed AD would require accomplishing the...

Quantification of nitrous oxide (N2O) emissions and soluble microbial product (SMP) production by a modified AOB-NOB-N2O-SMP model.

PubMed

Kim, MinJeong; Wu, Guangxue; Yoo, ChangKyoo

2017-03-01

A modified AOB-NOB-N 2 O-SMP model able to quantify nitrous oxide (N 2 O) emissions and soluble microbial product (SMP) production during wastewater treatment is proposed. The modified AOB-NOB-N 2 O-SMP model takes into account: (1) two-step nitrification by ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB), (2) N 2 O production by AOB denitrification under oxygen-limited conditions and (3) SMP production by microbial growth and endogenous respiration. Validity of the modified model is demonstrated by comparing the simulation results with experimental data from lab-scale sequencing batch reactors (SBRs). To reliably implement the modified model, a model calibration that adjusts model parameters to fit the model outputs to the experimental data is conducted. The results of this study showed that the modeling accuracy of the modified AOB-NOB-N 2 O-SMP model increases by 19.7% (NH 4 ), 51.0% (NO 2 ), 57.8% (N 2 O) and 16.7% (SMP) compared to the conventional model which does not consider the two-step nitrification and SMP production by microbial endogenous respiration. Copyright © 2016 Elsevier Ltd. All rights reserved.