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Categorizing a continuous predictor subject to measurement error.

Electronic journal of statistics

Blas Achic BG, Wang T, Su Y, Kipnis V, Dodd K, Carroll RJ.
PMID: 31231451
Electron J Stat. 2018;12(2):4032-4056. doi: 10.1214/18-EJS1489. Epub 2018 Dec 11.

Epidemiologists often categorize a continuous risk predictor, even when the true risk model is not a categorical one. Nonetheless, such categorization is thought to be more robust and interpretable, and thus their goal is to fit the categorical model...

Disparate atomic displacements in skutterudite-type LaFe3CoSb12, a model for thermoelectric behavior.

Acta crystallographica. Section B, Structural science

Chakoumakos BC, Sales BC, Mandrus D, Keppens V.
PMID: 10927376
Acta Crystallogr B. 1999 Jun 01;55:341-347. doi: 10.1107/s0108768198018345.

Mean-square atomic displacements in lanthanum triiron cobalt dodecaantimonide, determined as a function of temperature using single-crystal neutron diffraction, show that the La atom exhibits an anomalously large displacement at room temperature, U(eq) = 0.0196 (9) Å(2), because it is...

Four-well tunneling States and elastic response of clathrates.

Physical review letters

Zerec I, Keppens V, McGuire MA, Mandrus D, Sales BC, Thalmeier P.
PMID: 15169497
Phys Rev Lett. 2004 May 07;92(18):185502. doi: 10.1103/PhysRevLett.92.185502. Epub 2004 May 04.

We present resonant ultrasound elastic constant measurements of the Eu8Ga16Ge30 and Sr8Ga16Ge30 clathrates. The elastic response of the Eu clathrate provides clear evidence for the existence of a new type of four-well tunneling states, described by two nearly degenerate...

Goldstone-mode phonon dynamics in the pyrochlore Cd2Re2O7.

Physical review letters

Kendziora CA, Sergienko IA, Jin R, He J, Keppens V, Sales BC, Mandrus D.
PMID: 16197084
Phys Rev Lett. 2005 Sep 16;95(12):125503. doi: 10.1103/PhysRevLett.95.125503. Epub 2005 Sep 16.

We have measured the polarized Raman scattering spectra of Cd2Re2O7, the first superconducting pyrochlore, as a function of temperature. For temperatures below the cubic-to-tetragonal structural phase transition (SPT) at 200 K, a peak with B1 symmetry develops at zero...

Intake_epis_food(): An R Function for Fitting a Bivariate Nonlinear Measurement Error Model to Estimate Usual and Energy Intake for Episodically Consumed Foods.

Journal of statistical software

Pérez A, Zhang S, Kipnis V, Midthune D, Freedman LS, Carroll RJ.
PMID: 22837731
J Stat Softw. 2012 Mar 05;46:1-17. doi: 10.18637/jss.v046.c03.

We consider a Bayesian analysis using WinBUGS to estimate the distribution of usual intake for episodically consumed foods and energy (calories). The model uses measures of nutrition and energy intakes via a food frequency questionnaire (FFQ) along with repeated...

Structural transitions: 'Ferroelectricity' in a metal.

Nature materials

Keppens V.
PMID: 24056803
Nat Mater. 2013 Nov;12(11):952-3. doi: 10.1038/nmat3774. Epub 2013 Sep 22.

No abstract available.

Influence of heat treatment on the tunneling states in neutron-irradiated quartz.

Physical review. B, Condensed matter

Keppens V, Laermans C.
PMID: 9983280
Phys Rev B Condens Matter. 1996 Jun 01;53(22):14849-14861. doi: 10.1103/physrevb.53.14849.

No abstract available.

Massive Axial and Appendicular Skeletal Deformities in Connection with Gorham-Stout Syndrome.

Medicines (Basel, Switzerland)

Kaissi AA, Bouchoucha S, Shboul M, Kenis V, Grill F, Ganger R, Kircher SG.
PMID: 31067823
Medicines (Basel). 2019 May 07;6(2). doi: 10.3390/medicines6020054.

No abstract available.

Arthrogryposis is a descriptive term, not a specific disease entity: escobar syndrome is an Example.

Minerva pediatrica

Al Kaissi A, Ryabykh S, Ochirova P, Bouchoucha S, Kenis V, Shboul M, Ganger R, Grill F, Kircher SG.
PMID: 32536119
Minerva Pediatr. 2020 Jun 12; doi: 10.23736/S0026-4946.20.05796-5. Epub 2020 Jun 12.

BACKGROUND: Children born with multiple congenital contractures have been almost always given the diagnosis of arthrogryposis multiplex congenita. Arthrogryposis is a descriptive term, not a specific disease entity. A heterogeneous group of conditions associated with multiple congenital joint contractures...

A constellation of orthopaedic deformities in connection with cartilage oligomeric matrix protein mutation.

African journal of paediatric surgery : AJPS

Al Kaissi A, Ghachem MB, Kenis V, Melchenko E, Grill F, Ganger R, Kircher SG.
PMID: 32952136
Afr J Paediatr Surg. 2019 Jan-Mar;16(1):23-28. doi: 10.4103/ajps.AJPS_90_17.

BACKGROUND: Trendelenburg's gait can be observed in Legg-Calvé-Perthes disease, antalgic gait observed in osteoarthropathy and waddling gait is usually seen in genu varum and circumduction gait in patients with genu valgum. Disabling pain was a prime manifestation in slipped...

Resonant ultrasound studies of the layered perovskite system Ca2-xSrxRuO4.

The Journal of the Acoustical Society of America

Luan Y, Keppens V, Jin R, Mandrus D.
PMID: 20000907
J Acoust Soc Am. 2009 Dec;126(6):2949-53. doi: 10.1121/1.3257583.

The elastic response of the layered perovskite system Ca(2-x)Sr(x)RuO(4) (0.2< or =x< or =2) has been studied as a function of temperature and doping concentration x using resonant ultrasound spectroscopy. The elastic constants c(11) and c(44) have been obtained...

Induced changes in the distribution of the tunneling states.

Physical review. B, Condensed matter

Keppens V, Laermans C.
PMID: 9977477
Phys Rev B Condens Matter. 1995 Apr 01;51(13):8602-8605. doi: 10.1103/physrevb.51.8602.

No abstract available.

Showing 13 to 24 of 40 entries