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Showing 1 to 12 of 49 entries
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Criterion validity of a competency-based assessment center in medical education--a 4-year follow-up study.

Medical education online

Rotthoff T, Ostapczuk MS, Kröncke KD, Zimmerhofer A, Decking U, Schneider M, Ritz-Timme S.
PMID: 25219931
Med Educ Online. 2014 Sep 12;19:25254. doi: 10.3402/meo.v19.25254. eCollection 2014.

INTRODUCTION: Core competencies have progressively gained importance in medical education. In other contexts, especially personnel selection and development, assessment centers (ACs) are used to assess competencies, but there is only a limited number of studies on competency-based ACs in...

Re-entrant spin susceptibility of a superconducting grain.

Physical review letters

Di Lorenzo A, Fazio R, Hekking FW, Falci G, Mastellone A, Giaquinta G.
PMID: 11015961
Phys Rev Lett. 2000 Jan 17;84(3):550-3. doi: 10.1103/PhysRevLett.84.550.

We study the spin susceptibility chi of a small, isolated superconducting grain. Because of the interplay between parity effects and pairing correlations, the dependence of chi on temperature T is qualitatively different from the standard BCS result valid in...

One-shot quantum measurement using a hysteretic dc SQUID.

Physical review letters

Buisson O, Balestro F, Pekola JP, Hekking FW.
PMID: 12857295
Phys Rev Lett. 2003 Jun 13;90(23):238304. doi: 10.1103/PhysRevLett.90.238304. Epub 2003 Jun 13.

We propose a single shot quantum measurement to determine the state of a Josephson charge quantum bit (qubit). The qubit is a Cooper pair box and the measuring device is a two junction superconducting quantum interference device (dc SQUID)....

Limitations in cooling electrons using normal-metal-superconductor tunnel junctions.

Physical review letters

Pekola JP, Heikkilä TT, Savin AM, Flyktman JT, Giazotto F, Hekking FW.
PMID: 14995329
Phys Rev Lett. 2004 Feb 06;92(5):056804. doi: 10.1103/PhysRevLett.92.056804. Epub 2004 Feb 06.

We demonstrate both theoretically and experimentally two limiting factors in cooling electrons using biased tunnel junctions to extract heat from a normal metal into a superconductor. First, when the injection rate of electrons exceeds the internal relaxation rate in...

Phase-charge duality of a josephson junction in a fluctuating electromagnetic environment.

Physical review letters

Corlevi S, Guichard W, Hekking FW, Haviland DB.
PMID: 17026389
Phys Rev Lett. 2006 Sep 01;97(9):096802. doi: 10.1103/PhysRevLett.97.096802. Epub 2006 Aug 29.

We have measured the current-voltage characteristics of a single Josephson junction placed in a high impedance environment. The transfer of Cooper pairs through the junction is governed by overdamped quasicharge dynamics, leading to Coulomb blockade and Bloch oscillations. Exact...

Coherent oscillations in a superconducting multilevel quantum system.

Physical review letters

Claudon J, Balestro F, Hekking FW, Buisson O.
PMID: 15525198
Phys Rev Lett. 2004 Oct 29;93(18):187003. doi: 10.1103/PhysRevLett.93.187003. Epub 2004 Oct 26.

We have observed coherent oscillations in a multilevel quantum system, formed by a current-biased dc SQUID. These oscillations have been induced by applying resonant microwave pulses of flux. Quantum measurement is performed by a nanosecond flux pulse that projects...

Adiabatic pumping in a superconductor-normal-superconductor weak link.

Physical review letters

Governale M, Taddei F, Fazio R, Hekking FW.
PMID: 16384489
Phys Rev Lett. 2005 Dec 16;95(25):256801. doi: 10.1103/PhysRevLett.95.256801. Epub 2005 Dec 13.

We present a formalism to study adiabatic pumping through a superconductor-normal-superconductor weak link. At zero temperature, the pumped charge is related to the Berry phase accumulated, in a pumping cycle, by the Andreev bound states. We analyze in detail...

The Eftekhar and Kerboul classifications in assessment of developmental dysplasia of the hip in adult patients. Measurement of inter- and intraobserver reliability.

HSS journal : the musculoskeletal journal of Hospital for Special Surgery

Brunner A, Ulmar B, Reichel H, Decking R.
PMID: 18751859
HSS J. 2008 Feb;4(1):25-31. doi: 10.1007/s11420-007-9066-z. Epub 2007 Dec 18.

AIM: To measure the inter- and intraobserver reliability of two radiologic classification systems in the evaluation of severity of osteoarthritis secondary to developmental dysplasia of the hip in adult patients and to compare these systems to historically published data...

A moiré deflectometer for antimatter.

Nature communications

Aghion S, Ahlén O, Amsler C, Ariga A, Ariga T, Belov AS, Berggren K, Bonomi G, Bräunig P, Bremer J, Brusa RS, Cabaret L, Canali C, Caravita R, Castelli F, Cerchiari G, Cialdi S, Comparat D, Consolati G, Derking H, Di Domizio S, Di Noto L, Doser M, Dudarev A, Ereditato A, Ferragut R, Fontana A, Genova P, Giammarchi M, Gligorova A, Gninenko SN, Haider S, Huse T, Jordan E, Jørgensen LV, Kaltenbacher T, Kawada J, Kellerbauer A, Kimura M, Knecht A, Krasnický D, Lagomarsino V, Lehner S, Magnani A, Malbrunot C, Mariazzi S, Matveev VA, Moia F, Nebbia G, Nédélec P, Oberthaler MK, Pacifico N, Petràček V, Pistillo C, Prelz F, Prevedelli M, Regenfus C, Riccardi C, Røhne O, Rotondi A, Sandaker H, Scampoli P, Storey J, Vasquez MA, Špaček M, Testera G, Vaccarone R, Widmann E, Zavatarelli S, Zmeskal J.
PMID: 25066810
Nat Commun. 2014 Jul 28;5:4538. doi: 10.1038/ncomms5538.

The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that violate the...

Transport through a finite one-dimensional crystal.

Physical review letters

Foxon CT, Harmans CJ, Hekking FW, Kouwenhoven LP, Timmering CE, van Wees BJ.
PMID: 10042899
Phys Rev Lett. 1990 Jul 16;65(3):361-364. doi: 10.1103/PhysRevLett.65.361.

No abstract available.

Josephson current through a Luttinger liquid.

Physical review letters

Fazio R, Hekking FW, Odintsov AA.
PMID: 10057771
Phys Rev Lett. 1995 Mar 06;74(10):1843-1846. doi: 10.1103/PhysRevLett.74.1843.

No abstract available.

Coffee Consumption and Incident Tachyarrhythmias: Reported Behavior, Mendelian Randomization, and Their Interactions.

JAMA internal medicine

Kim EJ, Hoffmann TJ, Nah G, Vittinghoff E, Delling F, Marcus GM.
PMID: 34279564
JAMA Intern Med. 2021 Sep 01;181(9):1185-1193. doi: 10.1001/jamainternmed.2021.3616.

IMPORTANCE: The notion that caffeine increases the risk of cardiac arrhythmias is common. However, evidence that the consumption of caffeinated products increases the risk of arrhythmias remains poorly substantiated.OBJECTIVE: To assess the association between consumption of common caffeinated products...

Showing 1 to 12 of 49 entries