---
_id: '59695'
abstract:
- lang: eng
text: We demonstrate electrical spin injection from ferromagnetic Fe/Tb multilayer
structures with remanent perpendicular magnetization into GaAs-based light-emitting
diodes at room temperature. Using a reverse-biased Schottky contact and a MgO
tunnel contact, respectively, we achieve spin injection at remanence. The maximum
degree of circular polarization of the emitted light is 3% at room temperature.
article_type: original
author:
- first_name: S.
full_name: Hövel, S.
last_name: Hövel
- first_name: N. C.
full_name: Gerhardt, N. C.
last_name: Gerhardt
- first_name: M. R.
full_name: Hofmann, M. R.
last_name: Hofmann
- first_name: F.-Y.
full_name: Lo, F.-Y.
last_name: Lo
- first_name: A.
full_name: Ludwig, A.
last_name: Ludwig
- first_name: D.
full_name: Reuter, D.
last_name: Reuter
- first_name: A. D.
full_name: Wieck, A. D.
last_name: Wieck
- first_name: E.
full_name: Schuster, E.
last_name: Schuster
- first_name: H.
full_name: Wende, H.
last_name: Wende
- first_name: W.
full_name: Keune, W.
last_name: Keune
- first_name: O.
full_name: Petracic, O.
last_name: Petracic
- first_name: K.
full_name: Westerholt, K.
last_name: Westerholt
citation:
ama: Hövel S, Gerhardt NC, Hofmann MR, et al. Room temperature electrical spin injection
in remanence. Applied Physics Letters. 2008;93(2). doi:10.1063/1.2957469
apa: Hövel, S., Gerhardt, N. C., Hofmann, M. R., Lo, F.-Y., Ludwig, A., Reuter,
D., Wieck, A. D., Schuster, E., Wende, H., Keune, W., Petracic, O., & Westerholt,
K. (2008). Room temperature electrical spin injection in remanence. Applied
Physics Letters, 93(2). https://doi.org/10.1063/1.2957469
bibtex: '@article{Hövel_Gerhardt_Hofmann_Lo_Ludwig_Reuter_Wieck_Schuster_Wende_Keune_et
al._2008, title={Room temperature electrical spin injection in remanence}, volume={93},
DOI={10.1063/1.2957469}, number={2},
journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Hövel,
S. and Gerhardt, N. C. and Hofmann, M. R. and Lo, F.-Y. and Ludwig, A. and Reuter,
D. and Wieck, A. D. and Schuster, E. and Wende, H. and Keune, W. and et al.},
year={2008} }'
chicago: Hövel, S., N. C. Gerhardt, M. R. Hofmann, F.-Y. Lo, A. Ludwig, D. Reuter,
A. D. Wieck, et al. “Room Temperature Electrical Spin Injection in Remanence.”
Applied Physics Letters 93, no. 2 (2008). https://doi.org/10.1063/1.2957469.
ieee: 'S. Hövel et al., “Room temperature electrical spin injection in remanence,”
Applied Physics Letters, vol. 93, no. 2, 2008, doi: 10.1063/1.2957469.'
mla: Hövel, S., et al. “Room Temperature Electrical Spin Injection in Remanence.”
Applied Physics Letters, vol. 93, no. 2, AIP Publishing, 2008, doi:10.1063/1.2957469.
short: S. Hövel, N.C. Gerhardt, M.R. Hofmann, F.-Y. Lo, A. Ludwig, D. Reuter, A.D.
Wieck, E. Schuster, H. Wende, W. Keune, O. Petracic, K. Westerholt, Applied Physics
Letters 93 (2008).
date_created: 2025-04-25T10:28:29Z
date_updated: 2026-02-25T09:38:49Z
doi: 10.1063/1.2957469
intvolume: ' 93'
issue: '2'
language:
- iso: eng
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
status: public
title: Room temperature electrical spin injection in remanence
type: journal_article
user_id: '15911'
volume: 93
year: '2008'
...
---
_id: '64685'
article_type: original
author:
- first_name: Helge
full_name: Glöckner, Helge
id: '178'
last_name: Glöckner
citation:
ama: Glöckner H. Ultrametric and non-locally convex analogues of the general curve
Lemma of convenient differential calculus. Glasgow Mathematical Journal.
2008;50(2):271–288. doi:10.1017/S0017089508004199
apa: Glöckner, H. (2008). Ultrametric and non-locally convex analogues of the general
curve Lemma of convenient differential calculus. Glasgow Mathematical Journal,
50(2), 271–288. https://doi.org/10.1017/S0017089508004199
bibtex: '@article{Glöckner_2008, title={Ultrametric and non-locally convex analogues
of the general curve Lemma of convenient differential calculus}, volume={50},
DOI={10.1017/S0017089508004199},
number={2}, journal={Glasgow Mathematical Journal}, author={Glöckner, Helge},
year={2008}, pages={271–288} }'
chicago: 'Glöckner, Helge. “Ultrametric and Non-Locally Convex Analogues of the
General Curve Lemma of Convenient Differential Calculus.” Glasgow Mathematical
Journal 50, no. 2 (2008): 271–288. https://doi.org/10.1017/S0017089508004199.'
ieee: 'H. Glöckner, “Ultrametric and non-locally convex analogues of the general
curve Lemma of convenient differential calculus,” Glasgow Mathematical Journal,
vol. 50, no. 2, pp. 271–288, 2008, doi: 10.1017/S0017089508004199.'
mla: Glöckner, Helge. “Ultrametric and Non-Locally Convex Analogues of the General
Curve Lemma of Convenient Differential Calculus.” Glasgow Mathematical Journal,
vol. 50, no. 2, 2008, pp. 271–288, doi:10.1017/S0017089508004199.
short: H. Glöckner, Glasgow Mathematical Journal 50 (2008) 271–288.
date_created: 2026-02-26T11:22:06Z
date_updated: 2026-02-27T08:19:56Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.1017/S0017089508004199
intvolume: ' 50'
issue: '2'
keyword:
- '26E15'
- '26E20'
- '26E30'
- 46A16
- 46S10
language:
- iso: eng
page: 271–288
publication: Glasgow Mathematical Journal
publication_identifier:
issn:
- 0017-0895
quality_controlled: '1'
status: public
title: Ultrametric and non-locally convex analogues of the general curve Lemma of
convenient differential calculus
type: journal_article
user_id: '178'
volume: 50
year: '2008'
...
---
_id: '64684'
article_type: original
author:
- first_name: Helge
full_name: Glöckner, Helge
id: '178'
last_name: Glöckner
citation:
ama: Glöckner H. Solutions to open problems in Neeb’s recent survey on infinite-dimensional
Lie groups. Geometriae Dedicata. 2008;135:71–86. doi:10.1007/s10711-008-9263-z
apa: Glöckner, H. (2008). Solutions to open problems in Neeb’s recent survey on
infinite-dimensional Lie groups. Geometriae Dedicata, 135, 71–86.
https://doi.org/10.1007/s10711-008-9263-z
bibtex: '@article{Glöckner_2008, title={Solutions to open problems in Neeb’s recent
survey on infinite-dimensional Lie groups}, volume={135}, DOI={10.1007/s10711-008-9263-z},
journal={Geometriae Dedicata}, author={Glöckner, Helge}, year={2008}, pages={71–86}
}'
chicago: 'Glöckner, Helge. “Solutions to Open Problems in Neeb’s Recent Survey on
Infinite-Dimensional Lie Groups.” Geometriae Dedicata 135 (2008): 71–86.
https://doi.org/10.1007/s10711-008-9263-z.'
ieee: 'H. Glöckner, “Solutions to open problems in Neeb’s recent survey on infinite-dimensional
Lie groups,” Geometriae Dedicata, vol. 135, pp. 71–86, 2008, doi: 10.1007/s10711-008-9263-z.'
mla: Glöckner, Helge. “Solutions to Open Problems in Neeb’s Recent Survey on Infinite-Dimensional
Lie Groups.” Geometriae Dedicata, vol. 135, 2008, pp. 71–86, doi:10.1007/s10711-008-9263-z.
short: H. Glöckner, Geometriae Dedicata 135 (2008) 71–86.
date_created: 2026-02-26T11:20:56Z
date_updated: 2026-02-27T08:21:15Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.1007/s10711-008-9263-z
intvolume: ' 135'
keyword:
- '22E65'
language:
- iso: eng
page: 71–86
publication: Geometriae Dedicata
publication_identifier:
issn:
- 0046-5755
quality_controlled: '1'
status: public
title: Solutions to open problems in Neeb’s recent survey on infinite-dimensional
Lie groups
type: journal_article
user_id: '178'
volume: 135
year: '2008'
...
---
_id: '64683'
article_type: original
author:
- first_name: Helge
full_name: Glöckner, Helge
id: '178'
last_name: Glöckner
citation:
ama: Glöckner H. Contractible Lie groups over local fields. Mathematische Zeitschrift.
2008;260(4):889–904. doi:10.1007/s00209-008-0305-x
apa: Glöckner, H. (2008). Contractible Lie groups over local fields. Mathematische
Zeitschrift, 260(4), 889–904. https://doi.org/10.1007/s00209-008-0305-x
bibtex: '@article{Glöckner_2008, title={Contractible Lie groups over local fields},
volume={260}, DOI={10.1007/s00209-008-0305-x},
number={4}, journal={Mathematische Zeitschrift}, author={Glöckner, Helge}, year={2008},
pages={889–904} }'
chicago: 'Glöckner, Helge. “Contractible Lie Groups over Local Fields.” Mathematische
Zeitschrift 260, no. 4 (2008): 889–904. https://doi.org/10.1007/s00209-008-0305-x.'
ieee: 'H. Glöckner, “Contractible Lie groups over local fields,” Mathematische
Zeitschrift, vol. 260, no. 4, pp. 889–904, 2008, doi: 10.1007/s00209-008-0305-x.'
mla: Glöckner, Helge. “Contractible Lie Groups over Local Fields.” Mathematische
Zeitschrift, vol. 260, no. 4, 2008, pp. 889–904, doi:10.1007/s00209-008-0305-x.
short: H. Glöckner, Mathematische Zeitschrift 260 (2008) 889–904.
date_created: 2026-02-26T11:19:31Z
date_updated: 2026-02-27T08:21:58Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.1007/s00209-008-0305-x
intvolume: ' 260'
issue: '4'
keyword:
- '22E20'
- '22E60'
language:
- iso: eng
page: 889–904
publication: Mathematische Zeitschrift
publication_identifier:
issn:
- 0025-5874
quality_controlled: '1'
status: public
title: Contractible Lie groups over local fields
type: journal_article
user_id: '178'
volume: 260
year: '2008'
...
---
_id: '63082'
author:
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
- first_name: Elke
full_name: Sumfleth, Elke
last_name: Sumfleth
citation:
ama: 'Fechner S, Sumfleth E. Collaborative concept mapping in context-oriented chemistry
learning. In: Canas AJ, Reiska P, Ahlberg M, Novak J, eds. Concept Mapping:
Connecting Educators. Proceedings of the Third International Conference on Concept
Mapping, Tallinn, Estonia & Helsinki, Finland. ; 2008.'
apa: 'Fechner, S., & Sumfleth, E. (2008). Collaborative concept mapping in context-oriented
chemistry learning. In A. J. Canas, P. Reiska, M. Ahlberg, & J. Novak (Eds.),
Concept Mapping: Connecting Educators. Proceedings of the Third International
Conference on Concept Mapping, Tallinn, Estonia & Helsinki, Finland.'
bibtex: '@inproceedings{Fechner_Sumfleth_2008, title={Collaborative concept mapping
in context-oriented chemistry learning}, booktitle={Concept Mapping: Connecting
Educators. Proceedings of the Third International Conference on Concept Mapping,
Tallinn, Estonia & Helsinki, Finland}, author={Fechner, Sabine and Sumfleth,
Elke}, editor={Canas, A. J. and Reiska, P. and Ahlberg, M. and Novak, J.}, year={2008}
}'
chicago: 'Fechner, Sabine, and Elke Sumfleth. “Collaborative Concept Mapping in
Context-Oriented Chemistry Learning.” In Concept Mapping: Connecting Educators.
Proceedings of the Third International Conference on Concept Mapping, Tallinn,
Estonia & Helsinki, Finland, edited by A. J. Canas, P. Reiska, M. Ahlberg,
and J. Novak, 2008.'
ieee: 'S. Fechner and E. Sumfleth, “Collaborative concept mapping in context-oriented
chemistry learning,” in Concept Mapping: Connecting Educators. Proceedings
of the Third International Conference on Concept Mapping, Tallinn, Estonia &
Helsinki, Finland, 2008.'
mla: 'Fechner, Sabine, and Elke Sumfleth. “Collaborative Concept Mapping in Context-Oriented
Chemistry Learning.” Concept Mapping: Connecting Educators. Proceedings of
the Third International Conference on Concept Mapping, Tallinn, Estonia &
Helsinki, Finland, edited by A. J. Canas et al., 2008.'
short: 'S. Fechner, E. Sumfleth, in: A.J. Canas, P. Reiska, M. Ahlberg, J. Novak
(Eds.), Concept Mapping: Connecting Educators. Proceedings of the Third International
Conference on Concept Mapping, Tallinn, Estonia & Helsinki, Finland, 2008.'
date_created: 2025-12-13T23:06:41Z
date_updated: 2025-12-13T23:11:06Z
department:
- _id: '386'
editor:
- first_name: A. J.
full_name: Canas, A. J.
last_name: Canas
- first_name: P.
full_name: Reiska, P.
last_name: Reiska
- first_name: M.
full_name: Ahlberg, M.
last_name: Ahlberg
- first_name: J.
full_name: Novak, J.
last_name: Novak
extern: '1'
language:
- iso: eng
publication: 'Concept Mapping: Connecting Educators. Proceedings of the Third International
Conference on Concept Mapping, Tallinn, Estonia & Helsinki, Finland'
quality_controlled: '1'
status: public
title: Collaborative concept mapping in context-oriented chemistry learning
type: conference
user_id: '54823'
year: '2008'
...
---
_id: '63081'
author:
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
- first_name: Marion
full_name: Haugwitz, Marion
last_name: Haugwitz
- first_name: Angela
full_name: Sandmann, Angela
last_name: Sandmann
- first_name: Elke
full_name: Sumfleth, Elke
last_name: Sumfleth
citation:
ama: 'Fechner S, Haugwitz M, Sandmann A, Sumfleth E. Context-oriented learning and
its effects on students’ achievement levels in chemistry education. In: Proceedings
of the NARST 2008 Annual Meeting, Baltimore, MD, USA. ; 2008.'
apa: Fechner, S., Haugwitz, M., Sandmann, A., & Sumfleth, E. (2008). Context-oriented
learning and its effects on students’ achievement levels in chemistry education.
Proceedings of the NARST 2008 Annual Meeting, Baltimore, MD, USA.
bibtex: '@inproceedings{Fechner_Haugwitz_Sandmann_Sumfleth_2008, title={Context-oriented
learning and its effects on students’ achievement levels in chemistry education},
booktitle={Proceedings of the NARST 2008 Annual Meeting, Baltimore, MD, USA},
author={Fechner, Sabine and Haugwitz, Marion and Sandmann, Angela and Sumfleth,
Elke}, year={2008} }'
chicago: Fechner, Sabine, Marion Haugwitz, Angela Sandmann, and Elke Sumfleth. “Context-Oriented
Learning and Its Effects on Students’ Achievement Levels in Chemistry Education.”
In Proceedings of the NARST 2008 Annual Meeting, Baltimore, MD, USA, 2008.
ieee: S. Fechner, M. Haugwitz, A. Sandmann, and E. Sumfleth, “Context-oriented learning
and its effects on students’ achievement levels in chemistry education,” 2008.
mla: Fechner, Sabine, et al. “Context-Oriented Learning and Its Effects on Students’
Achievement Levels in Chemistry Education.” Proceedings of the NARST 2008 Annual
Meeting, Baltimore, MD, USA, 2008.
short: 'S. Fechner, M. Haugwitz, A. Sandmann, E. Sumfleth, in: Proceedings of the
NARST 2008 Annual Meeting, Baltimore, MD, USA, 2008.'
date_created: 2025-12-13T23:04:49Z
date_updated: 2025-12-13T23:11:01Z
department:
- _id: '386'
extern: '1'
language:
- iso: eng
publication: Proceedings of the NARST 2008 Annual Meeting, Baltimore, MD, USA
quality_controlled: '1'
status: public
title: Context-oriented learning and its effects on students' achievement levels in
chemistry education
type: conference
user_id: '54823'
year: '2008'
...
---
_id: '18564'
abstract:
- lang: eng
text: 'In the context of photoelectron spectroscopy, the GW approach has developed
into the method of choice for computing excitation spectra of weakly correlated
bulk systems and their surfaces. To employ the established computational schemes
that have been developed for three-dimensional crystals, two-dimensional systems
are typically treated in the repeated-slab approach. In this work we critically
examine this approach and identify three important aspects for which the treatment
of long-range screening in two dimensions differs from the bulk: (1) anisotropy
of the macroscopic screening, (2) k-point sampling parallel to the surface, (3)
periodic repetition and slab-slab interaction. For prototypical semiconductor
(silicon) and ionic (NaCl) thin films we quantify the individual contributions
of points (1) to (3) and develop robust and efficient correction schemes derived
from the classic theory of dielectric screening.'
article_number: '235428'
article_type: original
author:
- first_name: Christoph
full_name: Freysoldt, Christoph
last_name: Freysoldt
- first_name: Philipp
full_name: Eggert, Philipp
last_name: Eggert
- first_name: Patrick
full_name: Rinke, Patrick
last_name: Rinke
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Matthias
full_name: Scheffler, Matthias
last_name: Scheffler
citation:
ama: 'Freysoldt C, Eggert P, Rinke P, Schindlmayr A, Scheffler M. Screening in two
dimensions: GW calculations for surfaces and thin films using the repeated-slab
approach. Physical Review B. 2008;77(23). doi:10.1103/PhysRevB.77.235428'
apa: 'Freysoldt, C., Eggert, P., Rinke, P., Schindlmayr, A., & Scheffler, M.
(2008). Screening in two dimensions: GW calculations for surfaces and thin films
using the repeated-slab approach. Physical Review B, 77(23), Article
235428. https://doi.org/10.1103/PhysRevB.77.235428'
bibtex: '@article{Freysoldt_Eggert_Rinke_Schindlmayr_Scheffler_2008, title={Screening
in two dimensions: GW calculations for surfaces and thin films using the repeated-slab
approach}, volume={77}, DOI={10.1103/PhysRevB.77.235428},
number={23235428}, journal={Physical Review B}, publisher={American Physical Society},
author={Freysoldt, Christoph and Eggert, Philipp and Rinke, Patrick and Schindlmayr,
Arno and Scheffler, Matthias}, year={2008} }'
chicago: 'Freysoldt, Christoph, Philipp Eggert, Patrick Rinke, Arno Schindlmayr,
and Matthias Scheffler. “Screening in Two Dimensions: GW Calculations for Surfaces
and Thin Films Using the Repeated-Slab Approach.” Physical Review B 77,
no. 23 (2008). https://doi.org/10.1103/PhysRevB.77.235428.'
ieee: 'C. Freysoldt, P. Eggert, P. Rinke, A. Schindlmayr, and M. Scheffler, “Screening
in two dimensions: GW calculations for surfaces and thin films using the repeated-slab
approach,” Physical Review B, vol. 77, no. 23, Art. no. 235428, 2008, doi:
10.1103/PhysRevB.77.235428.'
mla: 'Freysoldt, Christoph, et al. “Screening in Two Dimensions: GW Calculations
for Surfaces and Thin Films Using the Repeated-Slab Approach.” Physical Review
B, vol. 77, no. 23, 235428, American Physical Society, 2008, doi:10.1103/PhysRevB.77.235428.'
short: C. Freysoldt, P. Eggert, P. Rinke, A. Schindlmayr, M. Scheffler, Physical
Review B 77 (2008).
date_created: 2020-08-28T11:50:14Z
date_updated: 2025-12-16T11:11:03Z
ddc:
- '530'
department:
- _id: '296'
- _id: '35'
- _id: '170'
- _id: '230'
doi: 10.1103/PhysRevB.77.235428
external_id:
arxiv:
- '0801.1714'
isi:
- '000257289500118'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T11:51:42Z
date_updated: 2020-08-30T15:32:46Z
description: Creative Commons Attribution 3.0 Unported Public License (CC BY 3.0)
file_id: '18565'
file_name: PhysRevB.77.235428.pdf
file_size: 286723
relation: main_file
title: 'Screening in two dimensions: GW calculations for surfaces and thin films
using the repeated-slab approach'
file_date_updated: 2020-08-30T15:32:46Z
has_accepted_license: '1'
intvolume: ' 77'
isi: '1'
issue: '23'
language:
- iso: eng
oa: '1'
publication: Physical Review B
publication_identifier:
eissn:
- 1550-235X
issn:
- 1098-0121
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: 'Screening in two dimensions: GW calculations for surfaces and thin films using
the repeated-slab approach'
type: journal_article
user_id: '16199'
volume: 77
year: '2008'
...
---
_id: '9199'
citation:
ama: 'Hyvärinen M, Mikkonen K, Mildorf J, eds. Narrative: Knowing, Living, Telling.
Vol 6. Johns Hopkins University Press; 2008:225-231.'
apa: 'Narrative: Knowing, Living, Telling. (2008). In M. Hyvärinen, K. Mikkonen,
& J. Mildorf (Eds.), Partial Answers (Vol. 6, Issue 2, pp. 225–231).
Johns Hopkins University Press.'
bibtex: '@book{Hyvärinen_Mikkonen_Mildorf_2008, title={Narrative: Knowing, Living,
Telling}, volume={6}, number={2}, journal={Partial Answers}, publisher={Johns
Hopkins University Press}, year={2008}, pages={225–231} }'
chicago: 'Hyvärinen, Matti, Kai Mikkonen, and Jarmila Mildorf, eds. Narrative:
Knowing, Living, Telling. Partial Answers. Vol. 6. Johns Hopkins University
Press, 2008.'
ieee: 'M. Hyvärinen, K. Mikkonen, and J. Mildorf, Eds., Narrative: Knowing, Living,
Telling, vol. 6, no. 2. Johns Hopkins University Press, 2008, pp. 225–231.'
mla: 'Hyvärinen, Matti, et al., editors. “Narrative: Knowing, Living, Telling.”
Partial Answers, vol. 6, no. 2, Johns Hopkins University Press, 2008, pp.
225–31.'
short: 'M. Hyvärinen, K. Mikkonen, J. Mildorf, eds., Narrative: Knowing, Living,
Telling, Johns Hopkins University Press, 2008.'
date_created: 2019-04-16T10:55:32Z
date_updated: 2026-03-10T14:10:14Z
department:
- _id: '1'
editor:
- first_name: Matti
full_name: Hyvärinen, Matti
last_name: Hyvärinen
- first_name: Kai
full_name: Mikkonen, Kai
last_name: Mikkonen
- first_name: Jarmila
full_name: Mildorf, Jarmila
id: '356'
last_name: Mildorf
intvolume: ' 6'
issue: '2'
language:
- iso: eng
page: 225-231
publication: Partial Answers
publication_identifier:
issn:
- 1565-3668
publication_status: published
publisher: Johns Hopkins University Press
quality_controlled: '1'
status: public
title: 'Narrative: Knowing, Living, Telling'
type: journal_editor
user_id: '14972'
volume: 6
year: '2008'
...
---
_id: '66782'
abstract:
- lang: eng
text: The link between formal education and the formation of national attachment
is widely acknowledged. Yet, research on teachers’ national attachment is still
relatively rare. Based on a comparative analysis of survey data obtained from
281 Berlin and London state secondary school head teachers, this paper proposes
a multivariate model in which notions of national identity, levels of national
pride and levels of supranational attachment represent predictors of national
attachment. The respective statistical analyses reveal striking cross‐national
similarities in terms of the individual and joint explanatory impact of these
predictors. Other findings concern correlations between different notions of Britishness/Germanness
and levels of national attachment, the relationship between national and supranational
attachment, and associations between national pride and national attachment.
article_type: original
author:
- first_name: Andreas
full_name: Pöllmann, Andreas
id: '77437'
last_name: Pöllmann
orcid: 0000-0002-9090-2547
citation:
ama: 'Pöllmann A. National attachment among Berlin and London head teachers: The
explanatory impact of national identity, national pride and supranational attachment.
Educational Studies. 2008;34(1):45-53. doi:10.1080/03055690701785277'
apa: 'Pöllmann, A. (2008). National attachment among Berlin and London head teachers:
The explanatory impact of national identity, national pride and supranational
attachment. Educational Studies, 34(1), 45–53. https://doi.org/10.1080/03055690701785277'
bibtex: '@article{Pöllmann_2008, title={National attachment among Berlin and London
head teachers: The explanatory impact of national identity, national pride and
supranational attachment}, volume={34}, DOI={10.1080/03055690701785277},
number={1}, journal={Educational Studies}, publisher={Informa UK Limited}, author={Pöllmann,
Andreas}, year={2008}, pages={45–53} }'
chicago: 'Pöllmann, Andreas. “National Attachment among Berlin and London Head Teachers:
The Explanatory Impact of National Identity, National Pride and Supranational
Attachment.” Educational Studies 34, no. 1 (2008): 45–53. https://doi.org/10.1080/03055690701785277.'
ieee: 'A. Pöllmann, “National attachment among Berlin and London head teachers:
The explanatory impact of national identity, national pride and supranational
attachment,” Educational Studies, vol. 34, no. 1, pp. 45–53, 2008, doi:
10.1080/03055690701785277.'
mla: 'Pöllmann, Andreas. “National Attachment among Berlin and London Head Teachers:
The Explanatory Impact of National Identity, National Pride and Supranational
Attachment.” Educational Studies, vol. 34, no. 1, Informa UK Limited, 2008,
pp. 45–53, doi:10.1080/03055690701785277.'
short: A. Pöllmann, Educational Studies 34 (2008) 45–53.
date_created: 2026-08-23T17:13:15Z
date_updated: 2026-08-24T08:23:00Z
doi: 10.1080/03055690701785277
extern: '1'
intvolume: ' 34'
issue: '1'
language:
- iso: eng
page: 45-53
publication: Educational Studies
publication_identifier:
issn:
- 0305-5698
- 1465-3400
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: 'National attachment among Berlin and London head teachers: The explanatory
impact of national identity, national pride and supranational attachment'
type: journal_article
user_id: '77437'
volume: 34
year: '2008'
...
---
_id: '31026'
abstract:
- lang: ger
text: "Am Beispiel der naturwissenschaftlichen Fächer untersucht die Studie den\r\neinzelschulischen
Gesamtzusammenhang, in dem sich Fachunterricht am Gymnasium vollzieht.\r\nDazu
werden die Schulkultur als auch die fachspezifische Kultur mit einem umfangreichen
Indikatorensatz operationalisiert und anschließend aufeinander bezogen sowie in
Bezug zur fachspezifischen Schuleffektivität gesetzt. Es ergeben sich deutliche
Hinweise auf eine Autonomie fachspezifischer Subkulturen sowie auf einen Zusammenhang
zwischen dem Stellenwert naturwissenschaftlicher Fächer und den betreffenden Leistungsergebnissen."
article_type: original
author:
- first_name: Isabell
full_name: van Ackeren, Isabell
last_name: van Ackeren
- first_name: Rainer
full_name: Block, Rainer
last_name: Block
- first_name: Harry
full_name: Kullmann, Harry
id: '77972'
last_name: Kullmann
orcid: 0000-0001-5488-5105
- first_name: Frank
full_name: Sprütten, Frank
last_name: Sprütten
- first_name: Klaus
full_name: Klemm, Klaus
last_name: Klemm
citation:
ama: van Ackeren I, Block R, Kullmann H, Sprütten F, Klemm K. Schulkultur als Kontext
naturwissenschaftlichen Lernens. Allgemeine und fachspezifische explorative Analysen.
Zeitschrift für Pädagogik. 2008;54(3):341–360. doi:10.25656/01:4355
apa: van Ackeren, I., Block, R., Kullmann, H., Sprütten, F., & Klemm, K. (2008).
Schulkultur als Kontext naturwissenschaftlichen Lernens. Allgemeine und fachspezifische
explorative Analysen. Zeitschrift für Pädagogik, 54(3), 341–360.
https://doi.org/10.25656/01:4355
bibtex: '@article{van Ackeren_Block_Kullmann_Sprütten_Klemm_2008, title={Schulkultur
als Kontext naturwissenschaftlichen Lernens. Allgemeine und fachspezifische explorative
Analysen}, volume={54}, DOI={10.25656/01:4355},
number={3}, journal={Zeitschrift für Pädagogik}, author={van Ackeren, Isabell
and Block, Rainer and Kullmann, Harry and Sprütten, Frank and Klemm, Klaus}, year={2008},
pages={341–360} }'
chicago: 'Ackeren, Isabell van, Rainer Block, Harry Kullmann, Frank Sprütten, and
Klaus Klemm. “Schulkultur als Kontext naturwissenschaftlichen Lernens. Allgemeine
und fachspezifische explorative Analysen.” Zeitschrift für Pädagogik 54,
no. 3 (2008): 341–360. https://doi.org/10.25656/01:4355.'
ieee: 'I. van Ackeren, R. Block, H. Kullmann, F. Sprütten, and K. Klemm, “Schulkultur
als Kontext naturwissenschaftlichen Lernens. Allgemeine und fachspezifische explorative
Analysen,” Zeitschrift für Pädagogik, vol. 54, no. 3, pp. 341–360, 2008,
doi: 10.25656/01:4355.'
mla: van Ackeren, Isabell, et al. “Schulkultur als Kontext naturwissenschaftlichen
Lernens. Allgemeine und fachspezifische explorative Analysen.” Zeitschrift
für Pädagogik, vol. 54, no. 3, 2008, pp. 341–360, doi:10.25656/01:4355.
short: I. van Ackeren, R. Block, H. Kullmann, F. Sprütten, K. Klemm, Zeitschrift
für Pädagogik 54 (2008) 341–360.
date_created: 2022-05-03T06:54:51Z
date_updated: 2026-08-29T08:39:03Z
department:
- _id: '556'
doi: 10.25656/01:4355
intvolume: ' 54'
issue: '3'
jel:
- I21
keyword:
- Lernen
- Schulkultur
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://www.pedocs.de/volltexte/2011/4355/pdf/ZfPaed_2008_3_vanAckeren_Block_Klemm_Kullmann_Spruetten_Schulkultur_Kontext_D_A.pdf
oa: '1'
page: 341–360
publication: Zeitschrift für Pädagogik
publication_identifier:
issn:
- 0044-3247
publication_status: published
quality_controlled: '1'
status: public
title: Schulkultur als Kontext naturwissenschaftlichen Lernens. Allgemeine und fachspezifische
explorative Analysen
type: journal_article
user_id: '105186'
volume: 54
year: '2008'
...
---
_id: '1107'
abstract:
- lang: ger
text: "Dieser Beitrag beschäftigt sich mit der Informationsextraktion aus Stellenanzeigen
im französischsprachigen Web. Ziel dieser Arbeit ist es, unstrukturierte Dokumente
in Repräasentationsvektoren anhand lokaler Grammatiken zu transformieren. Auf
diese Weise wird\r\nes möglich, den Stellenmarkt für Jobsuchmaschinen transparenter
zu gestalten, indem nur auf dem Inhalt der Anzeige in Form von Darstellungsvektoren
anstatt auf unübersichtlichem Fließtext gesucht werden muss."
author:
- first_name: Sandra
full_name: Bsiri, Sandra
last_name: Bsiri
- first_name: Michaela
full_name: Geierhos, Michaela
id: '42496'
last_name: Geierhos
orcid: 0000-0002-8180-5606
citation:
ama: 'Bsiri S, Geierhos M. Informationsextraktion aus Stellenanzeigen im Internet.
In: Hinneburg A, ed. LWA 2007: Lernen - Wissen - Adaption, Halle, September
2007, Workshop Proceedings. Halle-Wittenberg, Germany: Martin-Luther-University;
2007:229-236.'
apa: 'Bsiri, S., & Geierhos, M. (2007). Informationsextraktion aus Stellenanzeigen
im Internet. In A. Hinneburg (Ed.), LWA 2007: Lernen - Wissen - Adaption, Halle,
September 2007, Workshop Proceedings (pp. 229–236). Halle-Wittenberg, Germany:
Martin-Luther-University.'
bibtex: '@inproceedings{Bsiri_Geierhos_2007, place={ Halle-Wittenberg, Germany},
title={Informationsextraktion aus Stellenanzeigen im Internet}, booktitle={LWA
2007: Lernen - Wissen - Adaption, Halle, September 2007, Workshop Proceedings},
publisher={Martin-Luther-University}, author={Bsiri, Sandra and Geierhos, Michaela},
editor={Hinneburg, Alexander Editor}, year={2007}, pages={229–236} }'
chicago: 'Bsiri, Sandra, and Michaela Geierhos. “Informationsextraktion aus Stellenanzeigen
im Internet.” In LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007,
Workshop Proceedings, edited by Alexander Hinneburg, 229–36. Halle-Wittenberg,
Germany: Martin-Luther-University, 2007.'
ieee: 'S. Bsiri and M. Geierhos, “Informationsextraktion aus Stellenanzeigen im
Internet,” in LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007,
Workshop Proceedings, Halle (Saale), Germany, 2007, pp. 229–236.'
mla: 'Bsiri, Sandra, and Michaela Geierhos. “Informationsextraktion aus Stellenanzeigen
im Internet.” LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007,
Workshop Proceedings, edited by Alexander Hinneburg, Martin-Luther-University,
2007, pp. 229–36.'
short: 'S. Bsiri, M. Geierhos, in: A. Hinneburg (Ed.), LWA 2007: Lernen - Wissen
- Adaption, Halle, September 2007, Workshop Proceedings, Martin-Luther-University, Halle-Wittenberg,
Germany, 2007, pp. 229–236.'
conference:
end_date: 2007-09-26
location: Halle (Saale), Germany
name: 'Workshop-Woche: Lernen - Wissen - Adaption'
start_date: 2007-09-24
date_created: 2018-01-29T13:22:18Z
date_updated: 2022-01-06T06:50:56Z
department:
- _id: '36'
- _id: '1'
- _id: '579'
editor:
- first_name: 'Alexander '
full_name: 'Hinneburg, Alexander '
last_name: Hinneburg
extern: '1'
language:
- iso: ger
page: 229-236
place: ' Halle-Wittenberg, Germany'
publication: 'LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007, Workshop
Proceedings'
publication_identifier:
isbn:
- 978-3-86010-907-6
publication_status: published
publisher: Martin-Luther-University
quality_controlled: '1'
status: public
title: Informationsextraktion aus Stellenanzeigen im Internet
type: conference
user_id: '42496'
year: '2007'
...
---
_id: '18589'
abstract:
- lang: eng
text: For the calculation of neutral excitations, time-dependent density functional
theory (TDDFT) is an exact reformulation of the many-body time-dependent Schrödinger
equation, based on knowledge of the density instead of the many-body wavefunction.
The density can be determined in an efficient scheme by solving one-particle non-interacting
Schrödinger equations—the Kohn–Sham equations. The complication of the problem
is hidden in the—unknown—time-dependent exchange and correlation potential that
appears in the Kohn–Sham equations and for which it is essential to find good
approximations. Many approximations have been suggested and tested for finite
systems, where even the very simple adiabatic local-density approximation (ALDA)
has often proved to be successful. In the case of solids, ALDA fails to reproduce
optical absorption spectra, which are instead well described by solving the Bethe–Salpeter
equation of many-body perturbation theory (MBPT). On the other hand, ALDA can
lead to excellent results for loss functions (at vanishing and finite momentum
transfer). In view of this and thanks to recent successful developments of improved
linear-response kernels derived from MBPT, TDDFT is today considered a promising
alternative to MBPT for the calculation of electronic spectra, even for solids.
After reviewing the fundamentals of TDDFT within linear response, we discuss different
approaches and a variety of applications to extended systems.
article_type: review
author:
- first_name: Silvana
full_name: Botti, Silvana
last_name: Botti
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Rodolfo
full_name: Del Sole, Rodolfo
last_name: Del Sole
- first_name: Lucia
full_name: Reining, Lucia
last_name: Reining
citation:
ama: Botti S, Schindlmayr A, Del Sole R, Reining L. Time-dependent density-functional
theory for extended systems. Reports on Progress in Physics. 2007;70(3):357-407.
doi:10.1088/0034-4885/70/3/r02
apa: Botti, S., Schindlmayr, A., Del Sole, R., & Reining, L. (2007). Time-dependent
density-functional theory for extended systems. Reports on Progress in Physics,
70(3), 357–407. https://doi.org/10.1088/0034-4885/70/3/r02
bibtex: '@article{Botti_Schindlmayr_Del Sole_Reining_2007, title={Time-dependent
density-functional theory for extended systems}, volume={70}, DOI={10.1088/0034-4885/70/3/r02},
number={3}, journal={Reports on Progress in Physics}, publisher={IOP Publishing},
author={Botti, Silvana and Schindlmayr, Arno and Del Sole, Rodolfo and Reining,
Lucia}, year={2007}, pages={357–407} }'
chicago: 'Botti, Silvana, Arno Schindlmayr, Rodolfo Del Sole, and Lucia Reining.
“Time-Dependent Density-Functional Theory for Extended Systems.” Reports on
Progress in Physics 70, no. 3 (2007): 357–407. https://doi.org/10.1088/0034-4885/70/3/r02.'
ieee: S. Botti, A. Schindlmayr, R. Del Sole, and L. Reining, “Time-dependent density-functional
theory for extended systems,” Reports on Progress in Physics, vol. 70,
no. 3, pp. 357–407, 2007.
mla: Botti, Silvana, et al. “Time-Dependent Density-Functional Theory for Extended
Systems.” Reports on Progress in Physics, vol. 70, no. 3, IOP Publishing,
2007, pp. 357–407, doi:10.1088/0034-4885/70/3/r02.
short: S. Botti, A. Schindlmayr, R. Del Sole, L. Reining, Reports on Progress in
Physics 70 (2007) 357–407.
date_created: 2020-08-28T16:30:06Z
date_updated: 2022-01-06T06:53:40Z
ddc:
- '530'
doi: 10.1088/0034-4885/70/3/r02
extern: '1'
external_id:
isi:
- '000244875800003'
file:
- access_level: closed
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T16:32:12Z
date_updated: 2020-08-30T15:37:17Z
description: © 2007 IOP Publishing Ltd
file_id: '18590'
file_name: Botti_2007_Rep._Prog._Phys._70_R02.pdf
file_size: 1166692
relation: main_file
title: Time-dependent density-functional theory for extended systems
file_date_updated: 2020-08-30T15:37:17Z
has_accepted_license: '1'
intvolume: ' 70'
isi: '1'
issue: '3'
language:
- iso: eng
page: 357-407
publication: Reports on Progress in Physics
publication_identifier:
eissn:
- 1361-6633
issn:
- 0034-4885
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Time-dependent density-functional theory for extended systems
type: journal_article
user_id: '458'
volume: 70
year: '2007'
...
---
_id: '18591'
abstract:
- lang: eng
text: Using density-functional theory, we investigate the stability of the half-metallic
ground state of magnetite under different strain conditions. The effects of volume
relaxation and internal degrees of freedom are fully taken into account. For hydrostatic
compression, planar strain in the (001) plane and uniaxial strain along the [001]
direction, we derive quantitative limits beyond which magnetite becomes metallic.
As a major new result, we identify the bond length between the octahedrally coordinated
iron atoms and their neighbouring oxygen atoms as the main characteristic parameter,
and we show that the transition occurs if external strain reduces this interatomic
distance from 2.06 Å in equilibrium to below a critical value of 1.99 Å. Based
on this criterion, we also argue that planar strain due to epitaxial growth does
not lead to a metallic state for magnetite films grown on (111)-oriented substrates.
article_number: '5'
article_type: original
author:
- first_name: Martin
full_name: Friák, Martin
last_name: Friák
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Matthias
full_name: Scheffler, Matthias
last_name: Scheffler
citation:
ama: Friák M, Schindlmayr A, Scheffler M. Ab initio study of the half-metal to metal
transition in strained magnetite. New Journal of Physics. 2007;9(1). doi:10.1088/1367-2630/9/1/005
apa: Friák, M., Schindlmayr, A., & Scheffler, M. (2007). Ab initio study of
the half-metal to metal transition in strained magnetite. New Journal of Physics,
9(1). https://doi.org/10.1088/1367-2630/9/1/005
bibtex: '@article{Friák_Schindlmayr_Scheffler_2007, title={Ab initio study of the
half-metal to metal transition in strained magnetite}, volume={9}, DOI={10.1088/1367-2630/9/1/005},
number={15}, journal={New Journal of Physics}, publisher={IOP Publishing and Deutsche
Physikalische Gesellschaft}, author={Friák, Martin and Schindlmayr, Arno and Scheffler,
Matthias}, year={2007} }'
chicago: Friák, Martin, Arno Schindlmayr, and Matthias Scheffler. “Ab Initio Study
of the Half-Metal to Metal Transition in Strained Magnetite.” New Journal of
Physics 9, no. 1 (2007). https://doi.org/10.1088/1367-2630/9/1/005.
ieee: M. Friák, A. Schindlmayr, and M. Scheffler, “Ab initio study of the half-metal
to metal transition in strained magnetite,” New Journal of Physics, vol.
9, no. 1, 2007.
mla: Friák, Martin, et al. “Ab Initio Study of the Half-Metal to Metal Transition
in Strained Magnetite.” New Journal of Physics, vol. 9, no. 1, 5, IOP Publishing
and Deutsche Physikalische Gesellschaft, 2007, doi:10.1088/1367-2630/9/1/005.
short: M. Friák, A. Schindlmayr, M. Scheffler, New Journal of Physics 9 (2007).
date_created: 2020-08-28T16:34:37Z
date_updated: 2022-01-06T06:53:41Z
ddc:
- '530'
doi: 10.1088/1367-2630/9/1/005
extern: '1'
external_id:
isi:
- '000243590400002'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T16:40:11Z
date_updated: 2020-08-30T15:40:54Z
description: © 2007 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
file_id: '18592'
file_name: Friák_2007_New_J._Phys._9_005.pdf
file_size: 573804
relation: main_file
title: Ab initio study of the half-metal to metal transition in strained magnetite
file_date_updated: 2020-08-30T15:40:54Z
has_accepted_license: '1'
intvolume: ' 9'
isi: '1'
issue: '1'
language:
- iso: eng
oa: '1'
publication: New Journal of Physics
publication_identifier:
eissn:
- 1361-6633
issn:
- 0034-4885
publication_status: published
publisher: IOP Publishing and Deutsche Physikalische Gesellschaft
quality_controlled: '1'
status: public
title: Ab initio study of the half-metal to metal transition in strained magnetite
type: journal_article
user_id: '458'
volume: 9
year: '2007'
...
---
_id: '18593'
abstract:
- lang: eng
text: We present a quantitative parameter-free method for calculating defect states
and charge-transition levels of point defects in semiconductors. It combines the
strength of density-functional theory for ground-state total energies with quasiparticle
corrections to the excitation spectrum obtained from many-body perturbation theory.
The latter is implemented within the G0W0 approximation, in which the electronic
self-energy is constructed non-self-consistently from the Green’s function of
the underlying Kohn–Sham system. The method is general and applicable to arbitrary
bulk or surface defects. As an example we consider anion vacancies at the (110)
surfaces of III–V semiconductors. Relative to the Kohn–Sham eigenvalues in the
local-density approximation, the quasiparticle corrections open the fundamental
band gap and raise the position of defect states inside the gap. As a consequence,
the charge-transition levels are also pushed to higher energies, leading to close
agreement with the available experimental data.
author:
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Matthias
full_name: Scheffler, Matthias
last_name: Scheffler
citation:
ama: 'Schindlmayr A, Scheffler M. Quasiparticle calculations for point defects at
semiconductor surfaces. In: Drabold DA, Estreicher SK, eds. Theory of Defects
in Semiconductors. Vol 104. Topics in Applied Physics. Berlin, Heidelberg:
Springer; 2007:165-192. doi:10.1007/11690320_8'
apa: 'Schindlmayr, A., & Scheffler, M. (2007). Quasiparticle calculations for
point defects at semiconductor surfaces. In D. A. Drabold & S. K. Estreicher
(Eds.), Theory of Defects in Semiconductors (Vol. 104, pp. 165–192). Berlin,
Heidelberg: Springer. https://doi.org/10.1007/11690320_8'
bibtex: '@inbook{Schindlmayr_Scheffler_2007, place={Berlin, Heidelberg}, series={Topics
in Applied Physics}, title={Quasiparticle calculations for point defects at semiconductor
surfaces}, volume={104}, DOI={10.1007/11690320_8},
booktitle={Theory of Defects in Semiconductors}, publisher={Springer}, author={Schindlmayr,
Arno and Scheffler, Matthias}, editor={Drabold, David A. and Estreicher, Stefan
K.Editors}, year={2007}, pages={165–192}, collection={Topics in Applied Physics}
}'
chicago: 'Schindlmayr, Arno, and Matthias Scheffler. “Quasiparticle Calculations
for Point Defects at Semiconductor Surfaces.” In Theory of Defects in Semiconductors,
edited by David A. Drabold and Stefan K. Estreicher, 104:165–92. Topics in Applied
Physics. Berlin, Heidelberg: Springer, 2007. https://doi.org/10.1007/11690320_8.'
ieee: 'A. Schindlmayr and M. Scheffler, “Quasiparticle calculations for point defects
at semiconductor surfaces,” in Theory of Defects in Semiconductors, vol.
104, D. A. Drabold and S. K. Estreicher, Eds. Berlin, Heidelberg: Springer, 2007,
pp. 165–192.'
mla: Schindlmayr, Arno, and Matthias Scheffler. “Quasiparticle Calculations for
Point Defects at Semiconductor Surfaces.” Theory of Defects in Semiconductors,
edited by David A. Drabold and Stefan K. Estreicher, vol. 104, Springer, 2007,
pp. 165–92, doi:10.1007/11690320_8.
short: 'A. Schindlmayr, M. Scheffler, in: D.A. Drabold, S.K. Estreicher (Eds.),
Theory of Defects in Semiconductors, Springer, Berlin, Heidelberg, 2007, pp. 165–192.'
date_created: 2020-08-28T16:43:51Z
date_updated: 2022-01-06T06:53:41Z
ddc:
- '530'
doi: 10.1007/11690320_8
editor:
- first_name: David A.
full_name: Drabold, David A.
last_name: Drabold
- first_name: Stefan K.
full_name: Estreicher, Stefan K.
last_name: Estreicher
extern: '1'
external_id:
isi:
- '000241944900008'
file:
- access_level: closed
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T16:49:56Z
date_updated: 2020-08-30T15:42:34Z
description: © 2007 Springer-Verlag, Berlin, Heidelberg
file_id: '18594'
file_name: Schindlmayr-Scheffler2007_Chapter_QuasiparticleCalculationsForPo.pdf
file_size: 649066
relation: main_file
title: Quasiparticle calculations for point defects at semiconductor surfaces
file_date_updated: 2020-08-30T15:42:34Z
has_accepted_license: '1'
intvolume: ' 104'
isi: '1'
language:
- iso: eng
page: 165-192
place: Berlin, Heidelberg
publication: Theory of Defects in Semiconductors
publication_identifier:
eisbn:
- 978-3-540-33401-9
eissn:
- 1437-0859
isbn:
- 978-3-540-33400-2
issn:
- 0303-4216
publication_status: published
publisher: Springer
quality_controlled: '1'
series_title: Topics in Applied Physics
status: public
title: Quasiparticle calculations for point defects at semiconductor surfaces
type: book_chapter
user_id: '458'
volume: 104
year: '2007'
...
---
_id: '9562'
abstract:
- lang: eng
text: Penetration tests (Magness-Taylor, force/deformation, Kramer multiblade shear)
applied directly over the peel of the fruit are the most acceptable methods for
measuring firmness and turgidity of fruits and vegetables [1, 2]. To replace these
destructive and mechanical penetration methods by non-destructive ultrasonic measurements
implies a great advance in order to obtain fast studies about the state of the
fruit at the time of harvest, during storage, and in the distribution points.
Moreover, there are other advantages since this technique can be fast, non-destructive,
fully automated, and performed on-line [1]. Within this context, the objective
of this study was to examine the relationship between physico-mechanical characteristics
(oil-gland break stress, thickness and dehydration) and ultrasonic characteristics
in the ``Salustiana'' orange peel during the complete dehydration process of the
orange at ambient conditions. After a description of the measurement system [3],
the fruit selection procedure and the measurement protocol, we analyze the results
of the change of physico-mechanical and ultrasonic properties in the orange peel
and their change with storage time.
author:
- first_name: Francisco
full_name: Camarena Gandia, Francisco
last_name: Camarena Gandia
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Victor
full_name: Espinosa, Victor
last_name: Espinosa
- first_name: Jens
full_name: Twiefel, Jens
last_name: Twiefel
- first_name: Miquel
full_name: Ardid, Miquel
last_name: Ardid
- first_name: Joan
full_name: Martinez-Mora, Joan
last_name: Martinez-Mora
- first_name: Joan Babtiste
full_name: Gandia, Joan Babtiste
last_name: Gandia
citation:
ama: 'Camarena Gandia F, Hemsel T, Espinosa V, et al. Non-destructive ultrasonic
test of orange dehydration. In: Proceedings of 19th International Congress
on Acoustics, Madrid. ; 2007.'
apa: Camarena Gandia, F., Hemsel, T., Espinosa, V., Twiefel, J., Ardid, M., Martinez-Mora,
J., & Gandia, J. B. (2007). Non-destructive ultrasonic test of orange dehydration.
In Proceedings of 19th international congress on Acoustics, Madrid.
bibtex: '@inproceedings{Camarena Gandia_Hemsel_Espinosa_Twiefel_Ardid_Martinez-Mora_Gandia_2007,
title={Non-destructive ultrasonic test of orange dehydration}, booktitle={Proceedings
of 19th international congress on Acoustics, Madrid}, author={Camarena Gandia,
Francisco and Hemsel, Tobias and Espinosa, Victor and Twiefel, Jens and Ardid,
Miquel and Martinez-Mora, Joan and Gandia, Joan Babtiste}, year={2007} }'
chicago: Camarena Gandia, Francisco, Tobias Hemsel, Victor Espinosa, Jens Twiefel,
Miquel Ardid, Joan Martinez-Mora, and Joan Babtiste Gandia. “Non-Destructive Ultrasonic
Test of Orange Dehydration.” In Proceedings of 19th International Congress
on Acoustics, Madrid, 2007.
ieee: F. Camarena Gandia et al., “Non-destructive ultrasonic test of orange
dehydration,” in Proceedings of 19th international congress on Acoustics, Madrid,
2007.
mla: Camarena Gandia, Francisco, et al. “Non-Destructive Ultrasonic Test of Orange
Dehydration.” Proceedings of 19th International Congress on Acoustics, Madrid,
2007.
short: 'F. Camarena Gandia, T. Hemsel, V. Espinosa, J. Twiefel, M. Ardid, J. Martinez-Mora,
J.B. Gandia, in: Proceedings of 19th International Congress on Acoustics, Madrid,
2007.'
date_created: 2019-04-29T10:11:16Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
publication: Proceedings of 19th international congress on Acoustics, Madrid
quality_controlled: '1'
status: public
title: Non-destructive ultrasonic test of orange dehydration
type: conference
user_id: '55222'
year: '2007'
...
---
_id: '9564'
abstract:
- lang: eng
text: 'Surgical resection of brain tumours is a difficult task. To enhance surgery
results, a tactile sensor is wanted that gives better resolution and sensitivity
than the human tactile sense. The characteristics of resonant vibrating piezoelectric
elements change with varying load. This allows for calculation of mechanical load
parameters by measuring electrical quantities. Different setups of piezoelectric
sensors have been used to investigate soft materials. Finally, a piezoelectric
bimorph sensor gave good results for distinguishing tissue mimicking gel-phantoms
with different gelatine concentrations. '
author:
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Ralf
full_name: Stroop, Ralf
last_name: Stroop
- first_name: David
full_name: Oliva Uribe, David
last_name: Oliva Uribe
- first_name: Jörg
full_name: Wallaschek, Jörg
last_name: Wallaschek
citation:
ama: Hemsel T, Stroop R, Oliva Uribe D, Wallaschek J. Resonant vibrating sensors
for tactile tissue differentiation. Journal of Sound and Vibration. 2007;308:441-446.
doi:10.1016/j.jsv.2007.03.063
apa: Hemsel, T., Stroop, R., Oliva Uribe, D., & Wallaschek, J. (2007). Resonant
vibrating sensors for tactile tissue differentiation. Journal of Sound and
Vibration, 308, 441–446. https://doi.org/10.1016/j.jsv.2007.03.063
bibtex: '@article{Hemsel_Stroop_Oliva Uribe_Wallaschek_2007, title={Resonant vibrating
sensors for tactile tissue differentiation}, volume={308}, DOI={10.1016/j.jsv.2007.03.063},
journal={Journal of Sound and Vibration}, author={Hemsel, Tobias and Stroop, Ralf
and Oliva Uribe, David and Wallaschek, Jörg}, year={2007}, pages={441–446} }'
chicago: 'Hemsel, Tobias, Ralf Stroop, David Oliva Uribe, and Jörg Wallaschek. “Resonant
Vibrating Sensors for Tactile Tissue Differentiation.” Journal of Sound and
Vibration 308 (2007): 441–46. https://doi.org/10.1016/j.jsv.2007.03.063.'
ieee: T. Hemsel, R. Stroop, D. Oliva Uribe, and J. Wallaschek, “Resonant vibrating
sensors for tactile tissue differentiation,” Journal of Sound and Vibration,
vol. 308, pp. 441–446, 2007.
mla: Hemsel, Tobias, et al. “Resonant Vibrating Sensors for Tactile Tissue Differentiation.”
Journal of Sound and Vibration, vol. 308, 2007, pp. 441–46, doi:10.1016/j.jsv.2007.03.063.
short: T. Hemsel, R. Stroop, D. Oliva Uribe, J. Wallaschek, Journal of Sound and
Vibration 308 (2007) 441–446.
date_created: 2019-04-29T10:20:03Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1016/j.jsv.2007.03.063
intvolume: ' 308'
language:
- iso: eng
page: 441 - 446
publication: Journal of Sound and Vibration
publication_identifier:
issn:
- 0022-460X
quality_controlled: '1'
status: public
title: Resonant vibrating sensors for tactile tissue differentiation
type: journal_article
user_id: '55222'
volume: 308
year: '2007'
...
---
_id: '9565'
author:
- first_name: Ernst-Günter
full_name: Lierke, Ernst-Günter
last_name: Lierke
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
citation:
ama: 'Lierke E-G, Hemsel T. Perspectives of Tumour Therapy by Local Ultrasonic Hyperthermia
and Thermal Ablation. In: Proceedings of 19th International Congress on Acoustics,
Madrid. ; 2007.'
apa: Lierke, E.-G., & Hemsel, T. (2007). Perspectives of Tumour Therapy by Local
Ultrasonic Hyperthermia and Thermal Ablation. In Proceedings of 19th international
congress on Acoustics, Madrid.
bibtex: '@inproceedings{Lierke_Hemsel_2007, title={Perspectives of Tumour Therapy
by Local Ultrasonic Hyperthermia and Thermal Ablation}, booktitle={Proceedings
of 19th international congress on Acoustics, Madrid}, author={Lierke, Ernst-Günter
and Hemsel, Tobias}, year={2007} }'
chicago: Lierke, Ernst-Günter, and Tobias Hemsel. “Perspectives of Tumour Therapy
by Local Ultrasonic Hyperthermia and Thermal Ablation.” In Proceedings of 19th
International Congress on Acoustics, Madrid, 2007.
ieee: E.-G. Lierke and T. Hemsel, “Perspectives of Tumour Therapy by Local Ultrasonic
Hyperthermia and Thermal Ablation,” in Proceedings of 19th international congress
on Acoustics, Madrid, 2007.
mla: Lierke, Ernst-Günter, and Tobias Hemsel. “Perspectives of Tumour Therapy by
Local Ultrasonic Hyperthermia and Thermal Ablation.” Proceedings of 19th International
Congress on Acoustics, Madrid, 2007.
short: 'E.-G. Lierke, T. Hemsel, in: Proceedings of 19th International Congress
on Acoustics, Madrid, 2007.'
date_created: 2019-04-29T10:21:57Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
publication: Proceedings of 19th international congress on Acoustics, Madrid
quality_controlled: '1'
status: public
title: Perspectives of Tumour Therapy by Local Ultrasonic Hyperthermia and Thermal
Ablation
type: conference
user_id: '55222'
year: '2007'
...
---
_id: '9566'
author:
- first_name: Takashi
full_name: Shigematsu , Takashi
last_name: 'Shigematsu '
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
citation:
ama: Shigematsu T, Morita T, Hemsel T. Fundamental Study on A Thickness-Shear Transformer
using X-Cut Lithium Niobate. Proceedings of Symposium on Ultrasonic Electronics.
2007;28:439-440.
apa: Shigematsu , T., Morita, T., & Hemsel, T. (2007). Fundamental Study on
A Thickness-Shear Transformer using X-Cut Lithium Niobate. Proceedings of Symposium
on Ultrasonic Electronics, 28, 439–440.
bibtex: '@article{Shigematsu _Morita_Hemsel_2007, title={Fundamental Study on A
Thickness-Shear Transformer using X-Cut Lithium Niobate}, volume={28}, journal={Proceedings
of Symposium on Ultrasonic Electronics}, author={Shigematsu , Takashi and Morita,
Takeshi and Hemsel, Tobias}, year={2007}, pages={439–440} }'
chicago: 'Shigematsu , Takashi, Takeshi Morita, and Tobias Hemsel. “Fundamental
Study on A Thickness-Shear Transformer Using X-Cut Lithium Niobate.” Proceedings
of Symposium on Ultrasonic Electronics 28 (2007): 439–40.'
ieee: T. Shigematsu , T. Morita, and T. Hemsel, “Fundamental Study on A Thickness-Shear
Transformer using X-Cut Lithium Niobate,” Proceedings of Symposium on Ultrasonic
Electronics, vol. 28, pp. 439–440, 2007.
mla: Shigematsu , Takashi, et al. “Fundamental Study on A Thickness-Shear Transformer
Using X-Cut Lithium Niobate.” Proceedings of Symposium on Ultrasonic Electronics,
vol. 28, 2007, pp. 439–40.
short: T. Shigematsu , T. Morita, T. Hemsel, Proceedings of Symposium on Ultrasonic
Electronics 28 (2007) 439–440.
date_created: 2019-04-29T10:23:26Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
intvolume: ' 28'
language:
- iso: eng
page: 439 - 440
publication: Proceedings of Symposium on Ultrasonic Electronics
quality_controlled: '1'
status: public
title: Fundamental Study on A Thickness-Shear Transformer using X-Cut Lithium Niobate
type: journal_article
user_id: '55222'
volume: 28
year: '2007'
...
---
_id: '9567'
abstract:
- lang: eng
text: Numerical predictions of the forced vibration of a disk assembly including
frictional effects between the shrouds are presented concerning engineering needs
for the blade design process. Assuming a tuned disk assembly, numerical static,
free, and then forced vibration analyses of a shrouded turbine blade measured
in the spin pit are performed systematically. For the excitation forces of an
air jet evaluated from the fairly linear behavior of the experimental blade resonance
peaks, the reliability of the proposed approach is validated through the very
close agreement of the computed and measured resonant peaks. These resonant peaks
demonstrate either a fairly linear behavior or a nonlinear one like the jump effect
of blade resonance amplitudes, or elastic impacts between the shrouds. Also, the
damping performance for different contact configurations between the shrouds is
numerically analyzed. These numerical results indicate that the shrouds generate
higher frictional damping for small angles (0{\^a}30deg) between the circumferential
direction and the normal vector to the contact surface.
author:
- first_name: J
full_name: Szwedowicz, J
last_name: Szwedowicz
- first_name: R
full_name: Visser, R
last_name: Visser
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: P. A
full_name: Masserey, P. A
last_name: Masserey
citation:
ama: Szwedowicz J, Visser R, Sextro W, Masserey PA. On Nonlinear Forced Vibration
of Shrouded Turbine Blades. Journal of Turbomachinery. 2007;130(1):011002-011002.
apa: Szwedowicz, J., Visser, R., Sextro, W., & Masserey, P. A. (2007). On Nonlinear
Forced Vibration of Shrouded Turbine Blades. Journal of Turbomachinery,
130(1), 011002–011002.
bibtex: '@article{Szwedowicz_Visser_Sextro_Masserey_2007, title={On Nonlinear Forced
Vibration of Shrouded Turbine Blades}, volume={130}, number={1}, journal={Journal
of Turbomachinery}, author={Szwedowicz, J and Visser, R and Sextro, Walter and
Masserey, P. A}, year={2007}, pages={011002–011002} }'
chicago: 'Szwedowicz, J, R Visser, Walter Sextro, and P. A Masserey. “On Nonlinear
Forced Vibration of Shrouded Turbine Blades.” Journal of Turbomachinery
130, no. 1 (2007): 011002–011002.'
ieee: J. Szwedowicz, R. Visser, W. Sextro, and P. A. Masserey, “On Nonlinear Forced
Vibration of Shrouded Turbine Blades,” Journal of Turbomachinery, vol.
130, no. 1, pp. 011002–011002, 2007.
mla: Szwedowicz, J., et al. “On Nonlinear Forced Vibration of Shrouded Turbine Blades.”
Journal of Turbomachinery, vol. 130, no. 1, 2007, pp. 011002–011002.
short: J. Szwedowicz, R. Visser, W. Sextro, P.A. Masserey, Journal of Turbomachinery
130 (2007) 011002–011002.
date_created: 2019-04-29T10:25:57Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
intvolume: ' 130'
issue: '1'
language:
- iso: eng
page: 011002-011002
publication: Journal of Turbomachinery
publication_identifier:
issn:
- 0889-504X
quality_controlled: '1'
status: public
title: On Nonlinear Forced Vibration of Shrouded Turbine Blades
type: journal_article
user_id: '55222'
volume: 130
year: '2007'
...
---
_id: '18595'
abstract:
- lang: eng
text: Excited-state calculations, notably for quasiparticle band structures, are
nowadays routinely performed within the GW approximation for the electronic self-energy.
Nevertheless, certain numerical approximations and simplifications are still employed
in practice to make the computations feasible. An important aspect for periodic
systems is the proper treatment of the singularity of the screened Coulomb interaction
in reciprocal space, which results from the slow 1/r decay in real space. This
must be done without introducing artificial interactions between the quasiparticles
and their periodic images in repeated cells, which occur when integrals of the
screened Coulomb interaction are discretised in reciprocal space. An adequate
treatment of both aspects is crucial for a numerically stable computation of the
self-energy. In this article we build on existing schemes for isotropic screening
and present an extension for anisotropic systems. We also show how the contributions
to the dielectric function arising from the non-local part of the pseudopotentials
can be computed efficiently. These improvements are crucial for obtaining a fast
convergence with respect to the number of points used for the Brillouin zone integration
and prove to be essential to make GW calculations for strongly anisotropic systems,
such as slabs or multilayers, efficient.
article_type: original
author:
- first_name: Christoph
full_name: Freysoldt, Christoph
last_name: Freysoldt
- first_name: Philipp
full_name: Eggert, Philipp
last_name: Eggert
- first_name: Patrick
full_name: Rinke, Patrick
last_name: Rinke
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Rex W.
full_name: Godby, Rex W.
last_name: Godby
- first_name: Matthias
full_name: Scheffler, Matthias
last_name: Scheffler
citation:
ama: Freysoldt C, Eggert P, Rinke P, Schindlmayr A, Godby RW, Scheffler M. Dielectric
anisotropy in the GW space–time method. Computer Physics Communications.
2007;176(1):1-13. doi:10.1016/j.cpc.2006.07.018
apa: Freysoldt, C., Eggert, P., Rinke, P., Schindlmayr, A., Godby, R. W., &
Scheffler, M. (2007). Dielectric anisotropy in the GW space–time method. Computer
Physics Communications, 176(1), 1–13. https://doi.org/10.1016/j.cpc.2006.07.018
bibtex: '@article{Freysoldt_Eggert_Rinke_Schindlmayr_Godby_Scheffler_2007, title={Dielectric
anisotropy in the GW space–time method}, volume={176}, DOI={10.1016/j.cpc.2006.07.018},
number={1}, journal={Computer Physics Communications}, publisher={Elsevier}, author={Freysoldt,
Christoph and Eggert, Philipp and Rinke, Patrick and Schindlmayr, Arno and Godby,
Rex W. and Scheffler, Matthias}, year={2007}, pages={1–13} }'
chicago: 'Freysoldt, Christoph, Philipp Eggert, Patrick Rinke, Arno Schindlmayr,
Rex W. Godby, and Matthias Scheffler. “Dielectric Anisotropy in the GW Space–Time
Method.” Computer Physics Communications 176, no. 1 (2007): 1–13. https://doi.org/10.1016/j.cpc.2006.07.018.'
ieee: 'C. Freysoldt, P. Eggert, P. Rinke, A. Schindlmayr, R. W. Godby, and M. Scheffler,
“Dielectric anisotropy in the GW space–time method,” Computer Physics Communications,
vol. 176, no. 1, pp. 1–13, 2007, doi: 10.1016/j.cpc.2006.07.018.'
mla: Freysoldt, Christoph, et al. “Dielectric Anisotropy in the GW Space–Time Method.”
Computer Physics Communications, vol. 176, no. 1, Elsevier, 2007, pp. 1–13,
doi:10.1016/j.cpc.2006.07.018.
short: C. Freysoldt, P. Eggert, P. Rinke, A. Schindlmayr, R.W. Godby, M. Scheffler,
Computer Physics Communications 176 (2007) 1–13.
date_created: 2020-08-28T16:52:21Z
date_updated: 2022-11-11T06:50:39Z
ddc:
- '530'
doi: 10.1016/j.cpc.2006.07.018
extern: '1'
external_id:
arxiv:
- cond-mat/0608215
isi:
- '000243680100001'
file:
- access_level: closed
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T17:56:51Z
date_updated: 2020-08-30T15:35:32Z
description: © 2006 Elsevier B.V.
file_id: '18596'
file_name: CPC-176-1-2007.pdf
file_size: 267788
relation: main_file
title: Dielectric anisotropy in the GW space-time method
file_date_updated: 2020-08-30T15:35:32Z
has_accepted_license: '1'
intvolume: ' 176'
isi: '1'
issue: '1'
language:
- iso: eng
page: 1-13
publication: Computer Physics Communications
publication_identifier:
issn:
- 0010-4655
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Dielectric anisotropy in the GW space–time method
type: journal_article
user_id: '458'
volume: 176
year: '2007'
...