---
_id: '2023'
author:
- first_name: Baruch
full_name: Awerbuch, Baruch
last_name: Awerbuch
- first_name: Christian
full_name: Scheideler, Christian
id: '20792'
last_name: Scheideler
citation:
ama: 'Awerbuch B, Scheideler C. A denial-of-service resistant DHT. In: Proceedings
of the Twenty-Sixth Annual ACM Symposium on Principles of Distributed Computing,
PODC 2007, Portland, Oregon, USA, August 12-15, 2007. ACM; 2007:370--371.
doi:10.1145/1281100.1281178'
apa: Awerbuch, B., & Scheideler, C. (2007). A denial-of-service resistant DHT.
In Proceedings of the Twenty-Sixth Annual ACM Symposium on Principles of Distributed
Computing, PODC 2007, Portland, Oregon, USA, August 12-15, 2007 (pp. 370--371).
ACM. https://doi.org/10.1145/1281100.1281178
bibtex: '@inproceedings{Awerbuch_Scheideler_2007, title={A denial-of-service resistant
DHT}, DOI={10.1145/1281100.1281178},
booktitle={Proceedings of the Twenty-Sixth Annual ACM Symposium on Principles
of Distributed Computing, PODC 2007, Portland, Oregon, USA, August 12-15, 2007},
publisher={ACM}, author={Awerbuch, Baruch and Scheideler, Christian}, year={2007},
pages={370--371} }'
chicago: Awerbuch, Baruch, and Christian Scheideler. “A Denial-of-Service Resistant
DHT.” In Proceedings of the Twenty-Sixth Annual ACM Symposium on Principles
of Distributed Computing, PODC 2007, Portland, Oregon, USA, August 12-15, 2007,
370--371. ACM, 2007. https://doi.org/10.1145/1281100.1281178.
ieee: B. Awerbuch and C. Scheideler, “A denial-of-service resistant DHT,” in Proceedings
of the Twenty-Sixth Annual ACM Symposium on Principles of Distributed Computing,
PODC 2007, Portland, Oregon, USA, August 12-15, 2007, 2007, pp. 370--371.
mla: Awerbuch, Baruch, and Christian Scheideler. “A Denial-of-Service Resistant
DHT.” Proceedings of the Twenty-Sixth Annual ACM Symposium on Principles of
Distributed Computing, PODC 2007, Portland, Oregon, USA, August 12-15, 2007,
ACM, 2007, pp. 370--371, doi:10.1145/1281100.1281178.
short: 'B. Awerbuch, C. Scheideler, in: Proceedings of the Twenty-Sixth Annual ACM
Symposium on Principles of Distributed Computing, PODC 2007, Portland, Oregon,
USA, August 12-15, 2007, ACM, 2007, pp. 370--371.'
date_created: 2018-03-29T11:56:35Z
date_updated: 2022-01-06T06:54:24Z
ddc:
- '040'
department:
- _id: '79'
doi: 10.1145/1281100.1281178
file:
- access_level: open_access
content_type: application/pdf
creator: florida
date_created: 2018-04-13T10:02:18Z
date_updated: 2018-04-13T10:02:18Z
file_id: '2340'
file_name: DISC-07.pdf
file_size: 193097
relation: main_file
file_date_updated: 2018-04-13T10:02:18Z
has_accepted_license: '1'
oa: '1'
page: 370--371
publication: Proceedings of the Twenty-Sixth Annual ACM Symposium on Principles of
Distributed Computing, PODC 2007, Portland, Oregon, USA, August 12-15, 2007
publication_identifier:
isbn:
- 978-1-59593-616-5
publisher: ACM
status: public
title: A denial-of-service resistant DHT
type: conference
urn: '20237'
user_id: '15504'
year: '2007'
...
---
_id: '3002'
author:
- first_name: Johannes
full_name: Blömer, Johannes
id: '23'
last_name: Blömer
- first_name: Volker
full_name: Krummel, Volker
last_name: Krummel
citation:
ama: 'Blömer J, Krummel V. Analysis of Countermeasures Against Access Driven Cache
Attacks on AES. In: Selected Areas in Cryptography. Berlin, Heidelberg:
Springer Berlin Heidelberg; 2007:96-109. doi:10.1007/978-3-540-77360-3_7'
apa: 'Blömer, J., & Krummel, V. (2007). Analysis of Countermeasures Against
Access Driven Cache Attacks on AES. In Selected Areas in Cryptography (pp.
96–109). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-77360-3_7'
bibtex: '@inbook{Blömer_Krummel_2007, place={Berlin, Heidelberg}, title={Analysis
of Countermeasures Against Access Driven Cache Attacks on AES}, DOI={10.1007/978-3-540-77360-3_7},
booktitle={Selected Areas in Cryptography}, publisher={Springer Berlin Heidelberg},
author={Blömer, Johannes and Krummel, Volker}, year={2007}, pages={96–109} }'
chicago: 'Blömer, Johannes, and Volker Krummel. “Analysis of Countermeasures Against
Access Driven Cache Attacks on AES.” In Selected Areas in Cryptography,
96–109. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. https://doi.org/10.1007/978-3-540-77360-3_7.'
ieee: 'J. Blömer and V. Krummel, “Analysis of Countermeasures Against Access Driven
Cache Attacks on AES,” in Selected Areas in Cryptography, Berlin, Heidelberg:
Springer Berlin Heidelberg, 2007, pp. 96–109.'
mla: Blömer, Johannes, and Volker Krummel. “Analysis of Countermeasures Against
Access Driven Cache Attacks on AES.” Selected Areas in Cryptography, Springer
Berlin Heidelberg, 2007, pp. 96–109, doi:10.1007/978-3-540-77360-3_7.
short: 'J. Blömer, V. Krummel, in: Selected Areas in Cryptography, Springer Berlin
Heidelberg, Berlin, Heidelberg, 2007, pp. 96–109.'
date_created: 2018-06-05T08:12:18Z
date_updated: 2022-01-06T06:58:50Z
department:
- _id: '64'
doi: 10.1007/978-3-540-77360-3_7
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2007/282
oa: '1'
page: 96-109
place: Berlin, Heidelberg
publication: Selected Areas in Cryptography
publication_identifier:
isbn:
- '9783540773597'
publication_status: published
publisher: Springer Berlin Heidelberg
status: public
title: Analysis of Countermeasures Against Access Driven Cache Attacks on AES
type: book_chapter
user_id: '25078'
year: '2007'
...
---
_id: '1106'
author:
- first_name: Michaela
full_name: Geierhos, Michaela
id: '42496'
last_name: Geierhos
orcid: 0000-0002-8180-5606
citation:
ama: 'Geierhos M. Grammatik der Menschenbezeichner in biographischen Kontexten.
Vol 2. 1st ed. München: Ludwig-Maximilians-Universität; 2007.'
apa: 'Geierhos, M. (2007). Grammatik der Menschenbezeichner in biographischen
Kontexten (1st ed., Vol. 2). München: Ludwig-Maximilians-Universität.'
bibtex: '@book{Geierhos_2007, place={München}, edition={1}, series={Arbeiten zur
Informations- und Sprachverarbeitung}, title={Grammatik der Menschenbezeichner
in biographischen Kontexten}, volume={2}, publisher={Ludwig-Maximilians-Universität},
author={Geierhos, Michaela}, year={2007}, collection={Arbeiten zur Informations-
und Sprachverarbeitung} }'
chicago: 'Geierhos, Michaela. Grammatik der Menschenbezeichner in biographischen
Kontexten. 1st ed. Vol. 2. Arbeiten zur Informations- und Sprachverarbeitung.
München: Ludwig-Maximilians-Universität, 2007.'
ieee: 'M. Geierhos, Grammatik der Menschenbezeichner in biographischen Kontexten,
1st ed., vol. 2. München: Ludwig-Maximilians-Universität, 2007.'
mla: Geierhos, Michaela. Grammatik der Menschenbezeichner in biographischen Kontexten.
1st ed., vol. 2, Ludwig-Maximilians-Universität, 2007.
short: M. Geierhos, Grammatik der Menschenbezeichner in biographischen Kontexten,
1st ed., Ludwig-Maximilians-Universität, München, 2007.
date_created: 2018-01-26T17:15:22Z
date_updated: 2022-01-06T06:50:56Z
department:
- _id: '36'
- _id: '1'
- _id: '579'
edition: '1'
extern: '1'
intvolume: ' 2'
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://www.researchgate.net/publication/276277035_Grammatik_der_Menschenbezeichner_in_biographischen_Kontexten
oa: '1'
place: München
publication_status: published
publisher: Ludwig-Maximilians-Universität
series_title: Arbeiten zur Informations- und Sprachverarbeitung
status: public
title: Grammatik der Menschenbezeichner in biographischen Kontexten
type: book
user_id: '42496'
volume: 2
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: '2214'
abstract:
- lang: eng
text: We present a randomized block-level storage virtualization for arbitrary heterogeneous
storage systems that can distribute data in a fair and redundant way and can adapt
this distribution in an efficient way as storage devices enter or leave the system.
More precisely, our virtualization strategies can distribute a set of data blocks
among a set of storage devices of arbitrary non-uniform capacities so that a storage
device representing x% of the capacity in the system will get x% of the data (as
long as this is in principle possible) and the different copies of each data block
are stored so that no two copies of a data block are located in the same device.
Achieving these two properties is not easy, and no virtualization strategy has
been presented so far that has been formally shown to satisfy fairness and redundancy
while being time- and space-eflcient and allowing an efficient adaptation to a
changing set of devices.
author:
- first_name: André
full_name: Brinkmann, André
last_name: Brinkmann
- first_name: Sascha
full_name: Effert, Sascha
last_name: Effert
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
- first_name: Christian
full_name: Scheideler, Christian
id: '20792'
last_name: Scheideler
citation:
ama: 'Brinkmann A, Effert S, Meyer auf der Heide F, Scheideler C. Dynamic and redundant
data placement. In: IEEE International Conference on Distributed Computing
Systems (ICDCS). ; 2007.'
apa: Brinkmann, A., Effert, S., Meyer auf der Heide, F., & Scheideler, C. (2007).
Dynamic and redundant data placement. IEEE International Conference on Distributed
Computing Systems (ICDCS).
bibtex: '@inproceedings{Brinkmann_Effert_Meyer auf der Heide_Scheideler_2007, title={Dynamic
and redundant data placement}, booktitle={IEEE International Conference on Distributed
Computing Systems (ICDCS)}, author={Brinkmann, André and Effert, Sascha and Meyer
auf der Heide, Friedhelm and Scheideler, Christian}, year={2007} }'
chicago: Brinkmann, André, Sascha Effert, Friedhelm Meyer auf der Heide, and Christian
Scheideler. “Dynamic and Redundant Data Placement.” In IEEE International Conference
on Distributed Computing Systems (ICDCS), 2007.
ieee: A. Brinkmann, S. Effert, F. Meyer auf der Heide, and C. Scheideler, “Dynamic
and redundant data placement,” 2007.
mla: Brinkmann, André, et al. “Dynamic and Redundant Data Placement.” IEEE International
Conference on Distributed Computing Systems (ICDCS), 2007.
short: 'A. Brinkmann, S. Effert, F. Meyer auf der Heide, C. Scheideler, in: IEEE
International Conference on Distributed Computing Systems (ICDCS), 2007.'
date_created: 2018-04-05T07:08:35Z
date_updated: 2022-01-06T06:55:27Z
ddc:
- '040'
department:
- _id: '79'
- _id: '63'
file:
- access_level: open_access
content_type: application/pdf
creator: florida
date_created: 2018-04-13T10:01:42Z
date_updated: 2018-04-13T10:01:42Z
file_id: '2339'
file_name: ICDCS07.pdf
file_size: 164121
relation: main_file
file_date_updated: 2018-04-13T10:01:42Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
publication: IEEE International Conference on Distributed Computing Systems (ICDCS)
status: public
title: Dynamic and redundant data placement
type: conference
urn: '22147'
user_id: '15415'
year: '2007'
...
---
_id: '6287'
abstract:
- lang: eng
text: Spamming remains a form of Internet abuse, which burdens the Internet infrastructure,
is generally regarded as an annoyance, and is said to cause a huge economic harm.
Many technological, organizational, and legislative anti-spam measures have already
been proposed and implemented, but have not led to any substantial decrease in
the number of spam e-mails. We propose a scalable and flexible infrastructure
framework that integrates several anti-spam measures and that features both a
technological and an organizational facet. The key element of our infrastructure
is a new organizational unit that reliably and transparently limits the number
of e-mails that can be sent per day and per account. We also analyze the proposed
framework in terms of its theoretical effectiveness, the required resources, and
its limitations.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework.; 2007.'
apa: 'Schryen, G. (2007). Preventing E-mail Spam: The Conceptualization and the
Analysis of an Infrastructure Framework.'
bibtex: '@book{Schryen_2007, title={Preventing E-mail Spam: The Conceptualization
and the Analysis of an Infrastructure Framework}, author={Schryen, Guido}, year={2007}
}'
chicago: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the
Analysis of an Infrastructure Framework, 2007.'
ieee: 'G. Schryen, Preventing E-mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework. 2007.'
mla: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework. 2007.'
short: 'G. Schryen, Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework, 2007.'
date_created: 2018-12-18T12:50:22Z
date_updated: 2022-01-06T07:03:00Z
ddc:
- '000'
department:
- _id: '277'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:23:40Z
date_updated: 2018-12-18T13:23:40Z
file_id: '6322'
file_name: anti_spam_framework.pdf
file_size: 456755
relation: main_file
file_date_updated: 2018-12-18T13:23:40Z
has_accepted_license: '1'
keyword:
- Email
- Infrastructure
- Internet
- Spam
language:
- iso: eng
oa: '1'
status: public
title: 'Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure
Framework'
type: report
user_id: '61579'
year: '2007'
...
---
_id: '5652'
abstract:
- lang: eng
text: More than half of world-wide e-mail traffic ? an estimated total of several
billion e-mails per day ? consists of spam. This is becoming a considerable disturbance
to telecommunications. Spam is also closely related to other kinds of cyber crime
as it possibly contains malicious software or is pursuing some kind of fraudulent
aim, such as phishing. Besides technical and organizational measures, many countries
have introduced anti-spam legislation. However, today's world-wide legislative
coverage of spam is heterogeneous, and its effectiveness is controversially discussed.
This article describes important parameters by which anti-spam legislation can
vary and gives an overview and analysis of world-wide anti-spam legislation, including
the European Directive 2002/58/EC, the U.S. CANSPAM Act of 2003, and international
cooperation, such as the London Action Plan. The article then proceeds to discuss
the effectiveness of current laws, and it identifies problems resulting from the
fact that an international phenomenon is being addressed by national legislation.
Finally, the article presents suggestions for overcoming some of these problems.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. Anti-spam legislation: An analysis of laws and their effectiveness.
Information and Communications Technology Law. 2007;16(1):17-32.'
apa: 'Schryen, G. (2007). Anti-spam legislation: An analysis of laws and their effectiveness.
Information and Communications Technology Law, 16(1), 17–32.'
bibtex: '@article{Schryen_2007, title={Anti-spam legislation: An analysis of laws
and their effectiveness}, volume={16}, number={1}, journal={Information and Communications
Technology Law}, publisher={Taylor \& Francis}, author={Schryen, Guido}, year={2007},
pages={17–32} }'
chicago: 'Schryen, Guido. “Anti-Spam Legislation: An Analysis of Laws and Their
Effectiveness.” Information and Communications Technology Law 16, no. 1
(2007): 17–32.'
ieee: 'G. Schryen, “Anti-spam legislation: An analysis of laws and their effectiveness,”
Information and Communications Technology Law, vol. 16, no. 1, pp. 17–32,
2007.'
mla: 'Schryen, Guido. “Anti-Spam Legislation: An Analysis of Laws and Their Effectiveness.”
Information and Communications Technology Law, vol. 16, no. 1, Taylor \&
Francis, 2007, pp. 17–32.'
short: G. Schryen, Information and Communications Technology Law 16 (2007) 17–32.
date_created: 2018-11-14T14:45:57Z
date_updated: 2022-01-06T07:02:21Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:25:48Z
date_updated: 2018-12-18T13:25:48Z
file_id: '6325'
file_name: JOUNAL_VERSION.pdf
file_size: 175248
relation: main_file
file_date_updated: 2018-12-18T13:25:48Z
has_accepted_license: '1'
intvolume: ' 16'
issue: '1'
language:
- iso: eng
oa: '1'
page: 17-32
publication: Information and Communications Technology Law
publisher: Taylor \& Francis
status: public
title: 'Anti-spam legislation: An analysis of laws and their effectiveness'
type: journal_article
user_id: '61579'
volume: 16
year: '2007'
...
---
_id: '5654'
abstract:
- lang: eng
text: Spamming remains a form of Internet abuse, which burdens the Internet infrastructure,
is generally regarded as an annoyance, and is said to cause economic harm to the
tune of about several billion US\$ per year. Many technological, organizational,
and legislative anti-spam measures have already been proposed and implemented,
but have not led to any substantial decrease in the number of spam e-mails. We
propose here a new infrastructure framework that combines several anti-spam measures
in a framework that features both a technological and an organizational facet.
The key element of our infrastructure is a new organizational unit that reliably
and transparently limits he number of e-mails that can be sent per day and per
account. This paper first gives an overview of the framework, then it provides
technological and organizational details of the infrastructure, the deployment
of which depends to a large degree on its acceptance and propagation by the ICANN,
the ISOC, and by large e-mail service providers. Finally, the paper discusses
the limitations and drawbacks of the proposed framework.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. Armed for the spam battle - a technological and organizational
infrastructure framework. In: 40th Annual Hawaii International Conference on
System Sciences. ; 2007.'
apa: Schryen, G. (2007). Armed for the spam battle - a technological and organizational
infrastructure framework. In 40th Annual Hawaii International Conference on
System Sciences.
bibtex: '@inproceedings{Schryen_2007, title={Armed for the spam battle - a technological
and organizational infrastructure framework}, booktitle={40th Annual Hawaii International
Conference on System Sciences}, author={Schryen, Guido}, year={2007} }'
chicago: Schryen, Guido. “Armed for the Spam Battle - a Technological and Organizational
Infrastructure Framework.” In 40th Annual Hawaii International Conference on
System Sciences, 2007.
ieee: G. Schryen, “Armed for the spam battle - a technological and organizational
infrastructure framework,” in 40th Annual Hawaii International Conference on
System Sciences, 2007.
mla: Schryen, Guido. “Armed for the Spam Battle - a Technological and Organizational
Infrastructure Framework.” 40th Annual Hawaii International Conference on System
Sciences, 2007.
short: 'G. Schryen, in: 40th Annual Hawaii International Conference on System Sciences,
2007.'
date_created: 2018-11-14T14:46:49Z
date_updated: 2022-01-06T07:02:21Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:24:34Z
date_updated: 2018-12-18T13:24:34Z
file_id: '6323'
file_name: Armed for the spam battle - a technological and organizational infrastructure
framework - proceeding version.pdf
file_size: 338482
relation: main_file
file_date_updated: 2018-12-18T13:24:34Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
publication: 40th Annual Hawaii International Conference on System Sciences
status: public
title: Armed for the spam battle - a technological and organizational infrastructure
framework
type: conference
user_id: '61579'
year: '2007'
...
---
_id: '5655'
abstract:
- lang: eng
text: Spam e-mails have become a serious technological and economic problem. Up
to now, by deploying complementary anti-spam measures, we have been reasonably
able to withstand spam e-mails and use the Internet for regular communication.
However, if we are to avert the danger of losing the Internet e-mail service in
its capacity as a valuable, free and worldwide medium of open communication, anti-spam
activities should be performed more systematically than is currently the case
regarding the mainly heuristic, anti-spam measures in place. A formal framework,
within which the existing delivery routes that a spam e-mail may take, and anti-spam
measures and their effectiveness can be investigated, will perhaps encourage a
shift in methodology and pave the way for new, holistic anti-spam measures. This
paper presents a model of the Internet e-mail infrastructure as a directed graph
and a deterministic finite automaton and draws on automata theory to formally
derive the spam delivery routes. The most important anti-spam measures are then
described. Methods controlling only specific delivery routes are evaluated in
terms of how effectively they cover the modeled e-mail infrastructure; methods
operating independently of any particular routes receive a more general assessment.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: Schryen G. Do anti-spam measures effectively cover the e-mail communication
network? A formal approach. The Journal of Information Systems Security (AIS
Special Interest Group in Security). 2007;3(2):66-90.
apa: Schryen, G. (2007). Do anti-spam measures effectively cover the e-mail communication
network? A formal approach. The Journal of Information Systems Security (AIS
Special Interest Group in Security), 3(2), 66–90.
bibtex: '@article{Schryen_2007, title={Do anti-spam measures effectively cover the
e-mail communication network? A formal approach}, volume={3}, number={2}, journal={The
Journal of Information Systems Security (AIS Special Interest Group in Security)},
author={Schryen, Guido}, year={2007}, pages={66–90} }'
chicago: 'Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication
Network? A Formal Approach.” The Journal of Information Systems Security (AIS
Special Interest Group in Security) 3, no. 2 (2007): 66–90.'
ieee: G. Schryen, “Do anti-spam measures effectively cover the e-mail communication
network? A formal approach,” The Journal of Information Systems Security (AIS
Special Interest Group in Security), vol. 3, no. 2, pp. 66–90, 2007.
mla: Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication
Network? A Formal Approach.” The Journal of Information Systems Security (AIS
Special Interest Group in Security), vol. 3, no. 2, 2007, pp. 66–90.
short: G. Schryen, The Journal of Information Systems Security (AIS Special Interest
Group in Security) 3 (2007) 66–90.
date_created: 2018-11-14T14:51:41Z
date_updated: 2022-01-06T07:02:22Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:25:12Z
date_updated: 2018-12-18T13:25:12Z
file_id: '6324'
file_name: Do anti-spam measures effectively cover the e-mail communication - Journal
version.pdf
file_size: 100448
relation: main_file
file_date_updated: 2018-12-18T13:25:12Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '2'
keyword:
- e-mail
- spam
- e-mail infrastructure
- anti-spam measures
- spamming options
language:
- iso: eng
oa: '1'
page: 66-90
publication: The Journal of Information Systems Security (AIS Special Interest Group
in Security)
status: public
title: Do anti-spam measures effectively cover the e-mail communication network? A
formal approach
type: journal_article
user_id: '61579'
volume: 3
year: '2007'
...
---
_id: '5658'
abstract:
- lang: eng
text: 'Email communication is encumbered with a mass of email messages which their
recipients have neither requested nor require. Even worse, the impacts of these
messages are far from being simply an annoyance, as they also involve economic
damage. This manuscript examines the resource ?email addresses?, which is vital
for any potential bulk mailer and spammer. Both a methodology and a honeypot conceptualization
for implementing an empirical analysis of the usage of email addresses placed
on the Internet are proposed here. Their objective is to assess, on a quantitative
basis, the extent of the current harassment and its development over time. This
?framework? is intended to be extensible to measuring the effectiveness of address-obscuring
techniques. The implementation of a pilot honeypot is described, which led to
key findings, some of them being: (1) Web placements attract more than two-thirds
(70\%) of all honeypot spam emails, followed by newsgroup placements (28.6\%)
and newsletter subscriptions (1.4\%), (2) the proportions of spam relating to
the email addresses? top-level domain can be statistically assumed to be uniformly
distributed, (3) More than 43\% of addresses on the web have been abused, whereas
about 27\% was the case for addresses on newsgroups and only about 4\% was the
case for addresses used for a newsletter subscription, (4) Regarding the development
of email addresses? attractiveness for spammers over time, the service ?web sites?
features a negative linear relationship, whereas the service ?Usenet? hows a negative
exponential relationship. (5) Only 1.54\% of the spam emails showed an interrelation
between the topic of the spam email and that of the location where the recipient?s
address was placed, so that spammers are assumed to send their emails in a ?context
insensitive? manner. The results of the empirical analysis motivate the need for
the protection of email addresses through obscuration. We analyze this need by
formulating requirements for address obscuring techniques and we reveal to which
extent today?s most relevant approaches fulfill these requirements.'
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: Schryen G. The Impact that Placing Email Addresses on the Internet has on the
Receipt of Spam ? An Empirical Analysis. Computers & Security. 2007;2(5):361-372.
apa: Schryen, G. (2007). The Impact that Placing Email Addresses on the Internet
has on the Receipt of Spam ? An Empirical Analysis. Computers & Security,
2(5), 361–372.
bibtex: '@article{Schryen_2007, title={The Impact that Placing Email Addresses on
the Internet has on the Receipt of Spam ? An Empirical Analysis}, volume={2},
number={5}, journal={Computers & Security}, publisher={Elsevier}, author={Schryen,
Guido}, year={2007}, pages={361–372} }'
chicago: 'Schryen, Guido. “The Impact That Placing Email Addresses on the Internet
Has on the Receipt of Spam ? An Empirical Analysis.” Computers & Security
2, no. 5 (2007): 361–72.'
ieee: G. Schryen, “The Impact that Placing Email Addresses on the Internet has on
the Receipt of Spam ? An Empirical Analysis,” Computers & Security,
vol. 2, no. 5, pp. 361–372, 2007.
mla: Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has
on the Receipt of Spam ? An Empirical Analysis.” Computers & Security,
vol. 2, no. 5, Elsevier, 2007, pp. 361–72.
short: G. Schryen, Computers & Security 2 (2007) 361–372.
date_created: 2018-11-14T14:53:12Z
date_updated: 2022-01-06T07:02:22Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:27:01Z
date_updated: 2018-12-18T13:27:01Z
file_id: '6326'
file_name: The Impact that Placing Email Addresses on the Internet has on the Receipt
of Spam - An Empirical Analysis - Journal version.pdf
file_size: 3026200
relation: main_file
file_date_updated: 2018-12-18T13:27:01Z
has_accepted_license: '1'
intvolume: ' 2'
issue: '5'
keyword:
- Address-obfuscating techniques
- email
- empirical analysis
- honeypot
- security by design
- security by obscurity
- spam
language:
- iso: eng
oa: '1'
page: 361-372
publication: Computers & Security
publisher: Elsevier
status: public
title: The Impact that Placing Email Addresses on the Internet has on the Receipt
of Spam ? An Empirical Analysis
type: journal_article
user_id: '61579'
volume: 2
year: '2007'
...
---
_id: '11720'
author:
- first_name: Maik
full_name: Bevermeier, Maik
last_name: Bevermeier
- first_name: Tobias
full_name: Ebel, Tobias
last_name: Ebel
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Bevermeier M, Ebel T, Haeb-Umbach R. Channel Estimation by Exploiting Sublayer
Information in OFDM Systems. In: Multi-Carrier Spread Spectrum 2007. ;
2007.'
apa: Bevermeier, M., Ebel, T., & Haeb-Umbach, R. (2007). Channel Estimation
by Exploiting Sublayer Information in OFDM Systems. In Multi-Carrier Spread
Spectrum 2007.
bibtex: '@inproceedings{Bevermeier_Ebel_Haeb-Umbach_2007, title={Channel Estimation
by Exploiting Sublayer Information in OFDM Systems}, booktitle={Multi-Carrier
Spread Spectrum 2007}, author={Bevermeier, Maik and Ebel, Tobias and Haeb-Umbach,
Reinhold}, year={2007} }'
chicago: Bevermeier, Maik, Tobias Ebel, and Reinhold Haeb-Umbach. “Channel Estimation
by Exploiting Sublayer Information in OFDM Systems.” In Multi-Carrier Spread
Spectrum 2007, 2007.
ieee: M. Bevermeier, T. Ebel, and R. Haeb-Umbach, “Channel Estimation by Exploiting
Sublayer Information in OFDM Systems,” in Multi-Carrier Spread Spectrum 2007,
2007.
mla: Bevermeier, Maik, et al. “Channel Estimation by Exploiting Sublayer Information
in OFDM Systems.” Multi-Carrier Spread Spectrum 2007, 2007.
short: 'M. Bevermeier, T. Ebel, R. Haeb-Umbach, in: Multi-Carrier Spread Spectrum
2007, 2007.'
date_created: 2019-07-12T05:26:57Z
date_updated: 2022-01-06T06:51:07Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/BeEbHa07.pdf
oa: '1'
publication: Multi-Carrier Spread Spectrum 2007
status: public
title: Channel Estimation by Exploiting Sublayer Information in OFDM Systems
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '11722'
author:
- first_name: Maik
full_name: Bevermeier, Maik
last_name: Bevermeier
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Bevermeier M, Haeb-Umbach R. Combined Time and Frequency Domain OFDM Channel
Estimation. In: Multi-Carrier Spread Spectrum 2007. ; 2007.'
apa: Bevermeier, M., & Haeb-Umbach, R. (2007). Combined Time and Frequency Domain
OFDM Channel Estimation. In Multi-Carrier Spread Spectrum 2007.
bibtex: '@inproceedings{Bevermeier_Haeb-Umbach_2007, title={Combined Time and Frequency
Domain OFDM Channel Estimation}, booktitle={Multi-Carrier Spread Spectrum 2007},
author={Bevermeier, Maik and Haeb-Umbach, Reinhold}, year={2007} }'
chicago: Bevermeier, Maik, and Reinhold Haeb-Umbach. “Combined Time and Frequency
Domain OFDM Channel Estimation.” In Multi-Carrier Spread Spectrum 2007,
2007.
ieee: M. Bevermeier and R. Haeb-Umbach, “Combined Time and Frequency Domain OFDM
Channel Estimation,” in Multi-Carrier Spread Spectrum 2007, 2007.
mla: Bevermeier, Maik, and Reinhold Haeb-Umbach. “Combined Time and Frequency Domain
OFDM Channel Estimation.” Multi-Carrier Spread Spectrum 2007, 2007.
short: 'M. Bevermeier, R. Haeb-Umbach, in: Multi-Carrier Spread Spectrum 2007, 2007.'
date_created: 2019-07-12T05:27:00Z
date_updated: 2022-01-06T06:51:07Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/BeEb07.pdf
oa: '1'
publication: Multi-Carrier Spread Spectrum 2007
status: public
title: Combined Time and Frequency Domain OFDM Channel Estimation
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '11785'
abstract:
- lang: eng
text: 'In this paper we present a novel channel impulse response estimation technique
for block-oriented OFDM transmission based on combining estimators: the estimates
provided by a Kalman filter operating in the time domain and a Wiener filter in
the frequency domain are optimally combined by taking into account their estimated
error covariances. The resulting estimator turns out to be identical to the MAP
estimator of correlated jointly Gaussian mean vectors. Different variants of the
proposed scheme are experimentally investigated in an EEEE 802.11a-like system
setup. They compare favourably with known approaches from the literature resulting
in reduced mean square estimation error and bit error rate. Further, robustness
and complexity issues are discussed'
author:
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
- first_name: Maik
full_name: Bevermeier, Maik
last_name: Bevermeier
citation:
ama: 'Haeb-Umbach R, Bevermeier M. OFDM Channel Estimation Based on Combined Estimation
in Time and Frequency Domain. In: IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2007). Vol 3. ; 2007:III-277-III-280.
doi:10.1109/ICASSP.2007.366526'
apa: Haeb-Umbach, R., & Bevermeier, M. (2007). OFDM Channel Estimation Based
on Combined Estimation in Time and Frequency Domain. In IEEE International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2007) (Vol.
3, pp. III-277-III–280). https://doi.org/10.1109/ICASSP.2007.366526
bibtex: '@inproceedings{Haeb-Umbach_Bevermeier_2007, title={OFDM Channel Estimation
Based on Combined Estimation in Time and Frequency Domain}, volume={3}, DOI={10.1109/ICASSP.2007.366526},
booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2007)}, author={Haeb-Umbach, Reinhold and Bevermeier, Maik}, year={2007},
pages={III-277-III–280} }'
chicago: Haeb-Umbach, Reinhold, and Maik Bevermeier. “OFDM Channel Estimation Based
on Combined Estimation in Time and Frequency Domain.” In IEEE International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), 3:III-277-III–280,
2007. https://doi.org/10.1109/ICASSP.2007.366526.
ieee: R. Haeb-Umbach and M. Bevermeier, “OFDM Channel Estimation Based on Combined
Estimation in Time and Frequency Domain,” in IEEE International Conference
on Acoustics, Speech and Signal Processing (ICASSP 2007), 2007, vol. 3, pp.
III-277-III–280.
mla: Haeb-Umbach, Reinhold, and Maik Bevermeier. “OFDM Channel Estimation Based
on Combined Estimation in Time and Frequency Domain.” IEEE International Conference
on Acoustics, Speech and Signal Processing (ICASSP 2007), vol. 3, 2007, pp.
III-277-III–280, doi:10.1109/ICASSP.2007.366526.
short: 'R. Haeb-Umbach, M. Bevermeier, in: IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2007), 2007, pp. III-277-III–280.'
date_created: 2019-07-12T05:28:13Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
doi: 10.1109/ICASSP.2007.366526
intvolume: ' 3'
keyword:
- bit error rate
- block-oriented OFDM transmission
- channel estimation
- channel impulse response estimation
- combining estimators
- error statistics
- frequency domain estimation
- Gaussian mean vectors
- Gaussian processes
- Kalman filter
- Kalman filters
- MAP estimator
- maximum likelihood estimation
- OFDM channel estimation
- OFDM modulation
- time domain estimation
- time-frequency analysis
- Wiener filter
- Wiener filters
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/HaBe07.pdf
oa: '1'
page: III-277-III-280
publication: IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2007)
status: public
title: OFDM Channel Estimation Based on Combined Estimation in Time and Frequency
Domain
type: conference
user_id: '44006'
volume: 3
year: '2007'
...
---
_id: '11799'
abstract:
- lang: eng
text: In this paper, we propose a novel similarity measure to be used for localizing
mobile terminals by comparing measured signal power levels with a database of
predictions. The proposed measure provides the possibility to incorporate inherent
information about signal power level measurements requested by the serving base
station but not reported by the mobile terminal. Increased positioning accuracy
was observed both in simulations and with real field data
author:
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
- first_name: Sven
full_name: Peschke, Sven
last_name: Peschke
citation:
ama: Haeb-Umbach R, Peschke S. A Novel Similarity Measure for Positioning Cellular
Phones by a Comparison With a Database of Signal Power Levels. IEEE Transactions
on Vehicular Technology. 2007;56(1):368-372. doi:10.1109/TVT.2006.889563
apa: Haeb-Umbach, R., & Peschke, S. (2007). A Novel Similarity Measure for Positioning
Cellular Phones by a Comparison With a Database of Signal Power Levels. IEEE
Transactions on Vehicular Technology, 56(1), 368–372. https://doi.org/10.1109/TVT.2006.889563
bibtex: '@article{Haeb-Umbach_Peschke_2007, title={A Novel Similarity Measure for
Positioning Cellular Phones by a Comparison With a Database of Signal Power Levels},
volume={56}, DOI={10.1109/TVT.2006.889563},
number={1}, journal={IEEE Transactions on Vehicular Technology}, author={Haeb-Umbach,
Reinhold and Peschke, Sven}, year={2007}, pages={368–372} }'
chicago: 'Haeb-Umbach, Reinhold, and Sven Peschke. “A Novel Similarity Measure for
Positioning Cellular Phones by a Comparison With a Database of Signal Power Levels.”
IEEE Transactions on Vehicular Technology 56, no. 1 (2007): 368–72. https://doi.org/10.1109/TVT.2006.889563.'
ieee: R. Haeb-Umbach and S. Peschke, “A Novel Similarity Measure for Positioning
Cellular Phones by a Comparison With a Database of Signal Power Levels,” IEEE
Transactions on Vehicular Technology, vol. 56, no. 1, pp. 368–372, 2007.
mla: Haeb-Umbach, Reinhold, and Sven Peschke. “A Novel Similarity Measure for Positioning
Cellular Phones by a Comparison With a Database of Signal Power Levels.” IEEE
Transactions on Vehicular Technology, vol. 56, no. 1, 2007, pp. 368–72, doi:10.1109/TVT.2006.889563.
short: R. Haeb-Umbach, S. Peschke, IEEE Transactions on Vehicular Technology 56
(2007) 368–372.
date_created: 2019-07-12T05:28:29Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
doi: 10.1109/TVT.2006.889563
intvolume: ' 56'
issue: '1'
keyword:
- cellular phone positioning
- cellular radio
- measured signal power levels
- mobile handsets
- mobility management (mobile radio)
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/HaPe07.pdf
oa: '1'
page: 368-372
publication: IEEE Transactions on Vehicular Technology
status: public
title: A Novel Similarity Measure for Positioning Cellular Phones by a Comparison
With a Database of Signal Power Levels
type: journal_article
user_id: '44006'
volume: 56
year: '2007'
...
---
_id: '11822'
author:
- first_name: Valentin
full_name: Ion, Valentin
last_name: Ion
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Ion V, Haeb-Umbach R. Multi-Resolution Soft Features for Channel-Robust Distributed
Speech Recognition. In: Interspeech 2007. ; 2007.'
apa: Ion, V., & Haeb-Umbach, R. (2007). Multi-Resolution Soft Features for Channel-Robust
Distributed Speech Recognition. In Interspeech 2007.
bibtex: '@inproceedings{Ion_Haeb-Umbach_2007, title={Multi-Resolution Soft Features
for Channel-Robust Distributed Speech Recognition}, booktitle={Interspeech 2007},
author={Ion, Valentin and Haeb-Umbach, Reinhold}, year={2007} }'
chicago: Ion, Valentin, and Reinhold Haeb-Umbach. “Multi-Resolution Soft Features
for Channel-Robust Distributed Speech Recognition.” In Interspeech 2007,
2007.
ieee: V. Ion and R. Haeb-Umbach, “Multi-Resolution Soft Features for Channel-Robust
Distributed Speech Recognition,” in Interspeech 2007, 2007.
mla: Ion, Valentin, and Reinhold Haeb-Umbach. “Multi-Resolution Soft Features for
Channel-Robust Distributed Speech Recognition.” Interspeech 2007, 2007.
short: 'V. Ion, R. Haeb-Umbach, in: Interspeech 2007, 2007.'
date_created: 2019-07-12T05:28:55Z
date_updated: 2022-01-06T06:51:10Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/IoHa07.pdf
oa: '1'
publication: Interspeech 2007
status: public
title: Multi-Resolution Soft Features for Channel-Robust Distributed Speech Recognition
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '11883'
abstract:
- lang: eng
text: In this paper, we experimentally evaluate algorithms for velocity estimation
of a GSM 900 mobile terminal which are based on the analysis of the statistical
properties of the fast fading process. It is shown how theses statistics can be
obtained from the training sequences present in downlink transmission bursts without
establishing an active connection. Realistic simulations of a GSM channel according
to the COST 207 channel models have been conducted. These models incorporate effects
like multipath propagation, fading, cochannel interference and additive noise.
It is shown that velocity estimation by searching for the maximum slope of the
power density spectrum of the fast fading performs best.
author:
- first_name: Sven
full_name: Peschke, Sven
last_name: Peschke
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Peschke S, Haeb-Umbach R. Velocity Estimation of Mobile Terminals by Exploiting
GSM Downlink Signalling. In: 4th Workshop on Positioning Navigation and Communication
(WPNC 2007). ; 2007:217-222. doi:10.1109/WPNC.2007.353637'
apa: Peschke, S., & Haeb-Umbach, R. (2007). Velocity Estimation of Mobile Terminals
by Exploiting GSM Downlink Signalling. In 4th Workshop on Positioning Navigation
and Communication (WPNC 2007) (pp. 217–222). https://doi.org/10.1109/WPNC.2007.353637
bibtex: '@inproceedings{Peschke_Haeb-Umbach_2007, title={Velocity Estimation of
Mobile Terminals by Exploiting GSM Downlink Signalling}, DOI={10.1109/WPNC.2007.353637},
booktitle={4th Workshop on Positioning Navigation and Communication (WPNC 2007)},
author={Peschke, Sven and Haeb-Umbach, Reinhold}, year={2007}, pages={217–222}
}'
chicago: Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile
Terminals by Exploiting GSM Downlink Signalling.” In 4th Workshop on Positioning
Navigation and Communication (WPNC 2007), 217–22, 2007. https://doi.org/10.1109/WPNC.2007.353637.
ieee: S. Peschke and R. Haeb-Umbach, “Velocity Estimation of Mobile Terminals by
Exploiting GSM Downlink Signalling,” in 4th Workshop on Positioning Navigation
and Communication (WPNC 2007), 2007, pp. 217–222.
mla: Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile Terminals
by Exploiting GSM Downlink Signalling.” 4th Workshop on Positioning Navigation
and Communication (WPNC 2007), 2007, pp. 217–22, doi:10.1109/WPNC.2007.353637.
short: 'S. Peschke, R. Haeb-Umbach, in: 4th Workshop on Positioning Navigation and
Communication (WPNC 2007), 2007, pp. 217–222.'
date_created: 2019-07-12T05:30:06Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/WPNC.2007.353637
keyword:
- additive noise
- cellular radio
- channel estimation
- cochannel interference
- COST 207 channel models
- downlink transmission bursts
- fading channels
- fading process
- GSM downlink signalling
- mobile terminals
- multipath channels
- multipath propagation
- power density spectrum
- statistical analysis
- statistical properties
- telecommunication links
- telecommunication terminals
- velocity estimation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/PeHa07.pdf
oa: '1'
page: 217-222
publication: 4th Workshop on Positioning Navigation and Communication (WPNC 2007)
status: public
title: Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '11927'
abstract:
- lang: eng
text: Maximizing the output signal-to-noise ratio (SNR) of a sensor array in the
presence of spatially colored noise leads to a generalized eigenvalue problem.
While this approach has extensively been employed in narrowband (antenna) array
beamforming, it is typically not used for broadband (microphone) array beamforming
due to the uncontrolled amount of speech distortion introduced by a narrowband
SNR criterion. In this paper, we show how the distortion of the desired signal
can be controlled by a single-channel post-filter, resulting in a performance
comparable to the generalized minimum variance distortionless response beamformer,
where arbitrary transfer functions relate the source and the microphones. Results
are given both for directional and diffuse noise. A novel gradient ascent adaptation
algorithm is presented, and its good convergence properties are experimentally
revealed by comparison with alternatives from the literature. A key feature of
the proposed beamformer is that it operates blindly, i.e., it neither requires
knowledge about the array geometry nor an explicit estimation of the transfer
functions from source to sensors or the direction-of-arrival.
author:
- first_name: Ernst
full_name: Warsitz, Ernst
last_name: Warsitz
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Warsitz E, Haeb-Umbach R. Blind Acoustic Beamforming Based on Generalized Eigenvalue
Decomposition. IEEE Transactions on Audio, Speech, and Language Processing.
2007;15(5):1529-1539. doi:10.1109/TASL.2007.898454
apa: Warsitz, E., & Haeb-Umbach, R. (2007). Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition. IEEE Transactions on Audio, Speech,
and Language Processing, 15(5), 1529–1539. https://doi.org/10.1109/TASL.2007.898454
bibtex: '@article{Warsitz_Haeb-Umbach_2007, title={Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition}, volume={15}, DOI={10.1109/TASL.2007.898454},
number={5}, journal={IEEE Transactions on Audio, Speech, and Language Processing},
author={Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2007}, pages={1529–1539}
}'
chicago: 'Warsitz, Ernst, and Reinhold Haeb-Umbach. “Blind Acoustic Beamforming
Based on Generalized Eigenvalue Decomposition.” IEEE Transactions on Audio,
Speech, and Language Processing 15, no. 5 (2007): 1529–39. https://doi.org/10.1109/TASL.2007.898454.'
ieee: E. Warsitz and R. Haeb-Umbach, “Blind Acoustic Beamforming Based on Generalized
Eigenvalue Decomposition,” IEEE Transactions on Audio, Speech, and Language
Processing, vol. 15, no. 5, pp. 1529–1539, 2007.
mla: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Blind Acoustic Beamforming Based
on Generalized Eigenvalue Decomposition.” IEEE Transactions on Audio, Speech,
and Language Processing, vol. 15, no. 5, 2007, pp. 1529–39, doi:10.1109/TASL.2007.898454.
short: E. Warsitz, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language
Processing 15 (2007) 1529–1539.
date_created: 2019-07-12T05:30:57Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
doi: 10.1109/TASL.2007.898454
intvolume: ' 15'
issue: '5'
keyword:
- acoustic signal processing
- arbitrary transfer function
- array signal processing
- blind acoustic beamforming
- direction-of-arrival
- direction-of-arrival estimation
- eigenvalues and eigenfunctions
- generalized eigenvalue decomposition
- gradient ascent adaptation algorithm
- microphone arrays
- microphones
- narrowband array beamforming
- sensor array
- single-channel post-filter
- spatially colored noise
- transfer functions
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/WaHa07.pdf
oa: '1'
page: 1529-1539
publication: IEEE Transactions on Audio, Speech, and Language Processing
status: public
title: Blind Acoustic Beamforming Based on Generalized Eigenvalue Decomposition
type: journal_article
user_id: '44006'
volume: 15
year: '2007'
...
---
_id: '11934'
author:
- first_name: Ernst
full_name: Warsitz, Ernst
last_name: Warsitz
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
- first_name: Dang Hai
full_name: Tran Vu, Dang Hai
last_name: Tran Vu
citation:
ama: 'Warsitz E, Haeb-Umbach R, Tran Vu DH. Blind Adaptive Principal Eigenvector
Beamforming for Acoustical Source Separation. In: Interspeech 2007. ; 2007.'
apa: Warsitz, E., Haeb-Umbach, R., & Tran Vu, D. H. (2007). Blind Adaptive Principal
Eigenvector Beamforming for Acoustical Source Separation. In Interspeech 2007.
bibtex: '@inproceedings{Warsitz_Haeb-Umbach_Tran Vu_2007, title={Blind Adaptive
Principal Eigenvector Beamforming for Acoustical Source Separation}, booktitle={Interspeech
2007}, author={Warsitz, Ernst and Haeb-Umbach, Reinhold and Tran Vu, Dang Hai},
year={2007} }'
chicago: Warsitz, Ernst, Reinhold Haeb-Umbach, and Dang Hai Tran Vu. “Blind Adaptive
Principal Eigenvector Beamforming for Acoustical Source Separation.” In Interspeech
2007, 2007.
ieee: E. Warsitz, R. Haeb-Umbach, and D. H. Tran Vu, “Blind Adaptive Principal Eigenvector
Beamforming for Acoustical Source Separation,” in Interspeech 2007, 2007.
mla: Warsitz, Ernst, et al. “Blind Adaptive Principal Eigenvector Beamforming for
Acoustical Source Separation.” Interspeech 2007, 2007.
short: 'E. Warsitz, R. Haeb-Umbach, D.H. Tran Vu, in: Interspeech 2007, 2007.'
date_created: 2019-07-12T05:31:05Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/WaHaDa07.pdf
oa: '1'
publication: Interspeech 2007
status: public
title: Blind Adaptive Principal Eigenvector Beamforming for Acoustical Source Separation
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '11941'
author:
- first_name: Stefan
full_name: Windmann, Stefan
last_name: Windmann
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Windmann S, Haeb-Umbach R. An Approach to Iterative Speech Feature Enhancement
and Recognition. In: Interspeech 2007. ; 2007.'
apa: Windmann, S., & Haeb-Umbach, R. (2007). An Approach to Iterative Speech
Feature Enhancement and Recognition. In Interspeech 2007.
bibtex: '@inproceedings{Windmann_Haeb-Umbach_2007, title={An Approach to Iterative
Speech Feature Enhancement and Recognition}, booktitle={Interspeech 2007}, author={Windmann,
Stefan and Haeb-Umbach, Reinhold}, year={2007} }'
chicago: Windmann, Stefan, and Reinhold Haeb-Umbach. “An Approach to Iterative Speech
Feature Enhancement and Recognition.” In Interspeech 2007, 2007.
ieee: S. Windmann and R. Haeb-Umbach, “An Approach to Iterative Speech Feature Enhancement
and Recognition,” in Interspeech 2007, 2007.
mla: Windmann, Stefan, and Reinhold Haeb-Umbach. “An Approach to Iterative Speech
Feature Enhancement and Recognition.” Interspeech 2007, 2007.
short: 'S. Windmann, R. Haeb-Umbach, in: Interspeech 2007, 2007.'
date_created: 2019-07-12T05:31:13Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2007/WiHa07.pdf
oa: '1'
publication: Interspeech 2007
status: public
title: An Approach to Iterative Speech Feature Enhancement and Recognition
type: conference
user_id: '44006'
year: '2007'
...
---
_id: '34780'
author:
- first_name: Johannes
full_name: Süßmann, Johannes
id: '16220'
last_name: Süßmann
orcid: 0000-0001-5716-0863
citation:
ama: 'Süßmann J. [Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The Histories of
Emperor Charles V [...]. Münster. Aschendorff 2005. sehepunkte. 2007;7(4).'
apa: 'Süßmann, J. (2007). [Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The Histories
of Emperor Charles V [...]. Münster. Aschendorff 2005. In sehepunkte (Vol.
7, Issue 4).'
bibtex: '@article{Süßmann_2007, title={[Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.):
The Histories of Emperor Charles V [...]. Münster. Aschendorff 2005}, volume={7},
number={4}, journal={sehepunkte}, author={Süßmann, Johannes}, year={2007} }'
chicago: 'Süßmann, Johannes. “[Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The
Histories of Emperor Charles V [...]. Münster. Aschendorff 2005.” sehepunkte,
2007.'
ieee: 'J. Süßmann, “[Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The Histories
of Emperor Charles V [...]. Münster. Aschendorff 2005,” sehepunkte, vol.
7, no. 4. 2007.'
mla: 'Süßmann, Johannes. “[Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The Histories
of Emperor Charles V [...]. Münster. Aschendorff 2005.” sehepunkte, vol.
7, no. 4, 2007.'
short: J. Süßmann, sehepunkte 7 (2007).
date_created: 2022-12-21T18:02:40Z
date_updated: 2022-12-28T21:31:46Z
department:
- _id: '446'
extern: '1'
intvolume: ' 7'
issue: '4'
keyword:
- Karl V.
- Historiographiegeschichte
- Gedenken
language:
- iso: ger
main_file_link:
- open_access: '1'
url: http://www.sehepunkte.de/2007/04/6260.html
oa: '1'
publication: sehepunkte
publication_status: published
status: public
title: '[Rez. v.] C. Scott Dixon/Martina Fuchs (Hg.): The Histories of Emperor Charles
V [...]. Münster. Aschendorff 2005'
type: review
user_id: '16220'
volume: 7
year: '2007'
...