User profiles for J. Krajewski

Jarek Krajewski

Rhenish Univ. of Applied Sciences Cologne & Univ. Wuppertal
Verified email at uni-wuppertal.de
Cited by 4035

A review of depression and suicide risk assessment using speech analysis

…, S Scherer, J Krajewski, S Schnieder, J Epps… - Speech …, 2015 - Elsevier
This paper is the first review into the automatic analysis of speech for use as an objective
predictor of depression and suicidality. Both conditions are major public health concerns; …

[HTML][HTML] The strategies to support the COVID-19 vaccination with evidence-based communication and tackling misinformation

…, M Drąg, R Flisiak, J Jemielity, J Krajewski… - Vaccines, 2021 - mdpi.com
COVID-19 vaccinations are about to begin in various countries or are already ongoing. This
is an unprecedented operation that is also met with a loud response from anti-vaccine …

Superconductivity near 30 K without copper: the Ba0.6K0.4BiO3 perovskite

RJ Cava, B Batlogg, JJ Krajewski, R Farrow… - nature, 1988 - nature.com
It is well known that the breakthrough of Bednorz and Müller 1 in discovering superconductivity
in (La, Ba) 2 CuO 4 was inspired in part by their knowledge of the superconducting …

Structural anomalies, oxygen ordering and superconductivity in oxygen deficient Ba2YCu3Ox

…, B Batlogg, M Marezio, KM Rabe, JJ Krajewski… - Physica C …, 1990 - Elsevier
We report the characterization of series of oxygen deficient Ba 2 YCu 3 O x samples for 7 ≥
x ≥ 6 prepared by Zr gettered annealing at 440C. Measurements include complete crystal …

Superconductivity in the quaternary intermetallic compounds LnNi2B2C

RJ Cava, H Takagi, HW Zandbergen, JJ Krajewski… - nature, 1994 - nature.com
THE attainment of unprecedentedly high transition temperatures (T c s) in the copper oxide
superconductors illustrates how working with more complex chemical systems allows greater …

Systematic evolution of temperature-dependent resistivity in

…, B Batlogg, HL Kao, J Kwo, RJ Cava, JJ Krajewski… - Physical review …, 1992 - APS
The in-plane resistivity (ρ ab) of La 2− x Sr x CuO 4 has been studied over a wide temperature
(4–1000 K) and composition range (0< x< 0.35). The much discussed T-linear resistivity is …

New Phases of C60 Synthesized at High Pressure

…, AF Hebard, R Tycko, G Dabbagh, JJ Krajewski… - Science, 1994 - science.org
The fullerene C 60 can be converted into two different structures by high pressure and
temperature. They are metastable and revert to pristine C 60 on reheating to 300C at ambient …

Superconductivity at 23 K in yttrium palladium boride carbide

…, H Takagi, B Batlogg, HW Zandbergen, JJ Krajewski… - Nature, 1994 - nature.com
COPPER oxide compounds have dominated superconductivity research since 1986 because
of their very high transition temperatures (T c s). In contrast, no new families of high-T c …

Single-Crystal Epitaxial Thin Films of the Isotropic Metallic Oxides Sr1–xCaxRuO3 (0 ≤ × ≤ 1)

…, RB Vandover, JH Marshall, JWP Hsu, JJ Krajewski… - Science, 1992 - science.org
Single-crystal epitaxial thin films of the isotropic metallic oxides Sr 1–x Ca xRuO 3 (0 ≤ x ≤
1) were grown on miscut SrTiO 3 (100) substrates in situ by 90 off-axis sputtering. These thin …

Structure and physical properties of single crystals of the 84-K superconductor

…, SH Glarum, S Nakahara, R Farrow, JJ Krajewski… - Physical Review B, 1988 - APS
Single crystal sof the 84-K superconductor Bi 2.2 Sr 2 Ca 0.8 Cu 2 O 8+ δ were characterized
by x-ray diffraction, dc magnetic susceptibility, electrical resistivity, and microwave …