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Scalable Quantum Photonics with Single Color Centers in Silicon Carbide.

Nano letters

Radulaski M, Widmann M, Niethammer M, Zhang JL, Lee SY, Rendler T, Lagoudakis KG, Son NT, Janzén E, Ohshima T, Wrachtrup J, Vučković J.
PMID: 28225630
Nano Lett. 2017 Mar 08;17(3):1782-1786. doi: 10.1021/acs.nanolett.6b05102. Epub 2017 Feb 24.

Silicon carbide is a promising platform for single photon sources, quantum bits (qubits), and nanoscale sensors based on individual color centers. Toward this goal, we develop a scalable array of nanopillars incorporating single silicon vacancy centers in 4H-SiC, readily...

Dynamic Active Contours for Visual Tracking.

IEEE transactions on automatic control

Niethammer M, Tannenbaum A, Angenent S.
PMID: 23729836
IEEE Trans Automat Contr. 2006;51(4):562-579. doi: 10.1109/TAC.2006.872837.

Visual tracking using active contours is usually set in a static framework. The active contour tracks the object of interest in a given frame of an image sequence. A subsequent prediction step ensures good initial placement for the next...

Error-related potentials during continuous feedback: using EEG to detect errors of different type and severity.

Frontiers in human neuroscience

Spüler M, Niethammer C.
PMID: 25859204
Front Hum Neurosci. 2015 Mar 26;9:155. doi: 10.3389/fnhum.2015.00155. eCollection 2015.

When a person recognizes an error during a task, an error-related potential (ErrP) can be measured as response. It has been shown that ErrPs can be automatically detected in tasks with time-discrete feedback, which is widely applied in the...

Time-frequency representations of Lamb waves.

The Journal of the Acoustical Society of America

Niethammer M, Jacobs LJ, Qu J, Jarzynski J.
PMID: 11386539
J Acoust Soc Am. 2001 May;109(5):1841-7. doi: 10.1121/1.1357813.

The objective of this study is to establish the effectiveness of four different time-frequency representations (TFRs)--the reassigned spectrogram, the reassigned scalogram, the smoothed Wigner-Ville distribution, and the Hilbert spectrum--by comparing their ability to resolve the dispersion relationships for Lamb...

Model-based analysis of dispersion curves using chirplets.

The Journal of the Acoustical Society of America

Kuttig H, Niethammer M, Hurlebaus S, Jacobs LJ.
PMID: 16642827
J Acoust Soc Am. 2006 Apr;119(4):2122-30. doi: 10.1121/1.2177587.

Time-frequency representations, like the spectrogram or the scalogram, are widely used to characterize dispersive waves. The resulting energy distributions, however, suffer from the uncertainty principle, which complicates the allocation of energy to individual propagation modes (especially when the dispersion...

EFFICIENT REGISTRATION OF PATHOLOGICAL IMAGES: A JOINT PCA/IMAGE-RECONSTRUCTION APPROACH.

Proceedings. IEEE International Symposium on Biomedical Imaging

Han X, Yang X, Aylward S, Kwitt R, Niethammer M.
PMID: 29887971
Proc IEEE Int Symp Biomed Imaging. 2017 Apr;2017:10-14. doi: 10.1109/ISBI.2017.7950456. Epub 2017 Jun 19.

Registration involving one or more images containing pathologies is challenging, as standard image similarity measures and spatial transforms cannot account for common changes due to pathologies. Low-rank/Sparse (LRS) decomposition removes pathologies prior to registration; however, LRS is memory-demanding and...

Radiolabeled metaiodobenzylguanidine (mibg) in diagnosis and therapy of neuroblastoma - results from basic research (review).

International journal of oncology

Bruchelt G, Klingebiel T, Treuner J, Beck J, Lode H, Seitz G, Niethammer D.
PMID: 21556593
Int J Oncol. 1995 Mar;6(3):705-12. doi: 10.3892/ijo.6.3.705.

[I-131]mIBG, meta-iodobenzylguanidine, a catecholamine analogous compound, was synthesized by Wieland et al in 1979. It has been used for scintigraphic imaging of normal sympathetic tissue, of pheochromocytoma, and since 1983/84 also of neuroblastoma. Later, protocols for treatment of neuroblastoma...

Correction to: Fractions of cardiovascular diseases and mental disorders attributable to psychosocial work factors in 31 countries in Europe.

International archives of occupational and environmental health

Niedhammer I, Sultan-Taïeb H, Chastang JF, Vermeylen G, Parent-Thirion A.
PMID: 32725457
Int Arch Occup Environ Health. 2020 Nov;93(8):1043-1044. doi: 10.1007/s00420-020-01560-3.

Whilst working on an update of our study published in 2014 (orginal article), we have discovered an error in the measure of effort-reward imbalance (ERI) in this study, leading to errors in Table 3 for (1) the prevalence of...

Psychosocial work exposures and health outcomes: a meta-review of 72 literature reviews with meta-analysis.

Scandinavian journal of work, environment & health

Niedhammer I, Bertrais S, Witt K.
PMID: 34042163
Scand J Work Environ Health. 2021 Oct 01;47(7):489-508. doi: 10.5271/sjweh.3968. Epub 2021 May 27.

OBJECTIVE: This meta-review aimed to present all available quantitative pooled estimates for the associations between psychosocial work exposures and health outcomes using a systematic literature review of literature reviews with meta-analysis.METHODS: A systematic review of the literature from 2000...

[Weighting methodology for the national EVREST survey data].

Sante publique (Vandoeuvre-les-Nancy, France)

Leroyer A, Murcia M, Chastang JF, Rollin L, Volkoff S, Molinié AF, Niedhammer I.
PMID: 32372603
Sante Publique. 2019 September October;31(5):645-655. doi: 10.3917/spub.195.0645.

OBJECTIVES: The main objective was to describe the weighting methodology used for the national EVREST (Evolution and Relations in Health at Work) survey data. The secondary objectives were on the one hand to assess the extent of the differences...

Coherent electrical readout of defect spins in silicon carbide by photo-ionization at ambient conditions.

Nature communications

Niethammer M, Widmann M, Rendler T, Morioka N, Chen YC, Stöhr R, Hassan JU, Onoda S, Ohshima T, Lee SY, Mukherjee A, Isoya J, Son NT, Wrachtrup J.
PMID: 31804489
Nat Commun. 2019 Dec 05;10(1):5569. doi: 10.1038/s41467-019-13545-z.

Quantum technology relies on proper hardware, enabling coherent quantum state control as well as efficient quantum state readout. In this regard, wide-bandgap semiconductors are an emerging material platform with scalable wafer fabrication methods, hosting several promising spin-active point defects....

Patient-Specific Registration of Pre-operative and Post-recurrence Brain Tumor MRI Scans.

Brainlesion : glioma, multiple sclerosis, stroke and traumatic brain injuries. BrainLes (Workshop)

Han X, Bakas S, Kwitt R, Aylward S, Akbari H, Bilello M, Davatzikos C, Niethammer M.
PMID: 31259320
Brainlesion. 2019;11383:105-114. doi: 10.1007/978-3-030-11723-8_10. Epub 2019 Jan 26.

Registering brain magnetic resonance imaging (MRI) scans containing pathologies is challenging primarily due to large deformations caused by the pathologies, leading to missing correspondences between scans. However, the registration task is important and directly related to personalized medicine, as...

Showing 1 to 12 of 80 entries