---
_id: '40762'
abstract:
- lang: eng
  text: Detecting and analyzing directional structures in images is important in many
    applications since one-dimensional patterns often correspond to important features
    such as object contours or trajectories. Classifying a structure as directional
    or non-directional requires a measure to quantify the degree of directionality
    and a threshold, which needs to be chosen based on the statistics of the image.
    In order to do this, we model the image as a random field. So far, little research
    has been performed on analyzing directionality in random fields. In this paper,
    we propose a measure to quantify the degree of directionality based on the random
    monogenic signal, which enables a unique decomposition of a 2D signal into local
    amplitude, local orientation, and local phase. We investigate the second-order
    statistical properties of the monogenic signal for isotropic, anisotropic, and
    unidirectional random fields. We analyze our measure of directionality for finite-size
    sample images, and determine a threshold to distinguish between unidirectional
    and non-unidirectional random fields, which allows the automatic classification
    of images.
author:
- first_name: S. C.
  full_name: Olhede, S. C.
  last_name: Olhede
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: P. J.
  full_name: Schreier, P. J.
  last_name: Schreier
citation:
  ama: Olhede SC, Ramírez D, Schreier PJ. Detecting Directionality in Random Fields
    Using the Monogenic Signal. <i>IEEE Trans\ Inform\ Theory</i>. 2014;60(10):6491–6510.
    doi:<a href="https://doi.org/10.1109/TIT.2014.2342734">10.1109/TIT.2014.2342734</a>
  apa: Olhede, S. C., Ramírez, D., &#38; Schreier, P. J. (2014). Detecting Directionality
    in Random Fields Using the Monogenic Signal. <i>IEEE Trans.\ Inform.\ Theory</i>,
    <i>60</i>(10), 6491–6510. <a href="https://doi.org/10.1109/TIT.2014.2342734">https://doi.org/10.1109/TIT.2014.2342734</a>
  bibtex: '@article{Olhede_Ramírez_Schreier_2014, title={Detecting Directionality
    in Random Fields Using the Monogenic Signal}, volume={60}, DOI={<a href="https://doi.org/10.1109/TIT.2014.2342734">10.1109/TIT.2014.2342734</a>},
    number={10}, journal={IEEE Trans.\ Inform.\ Theory}, author={Olhede, S. C. and
    Ramírez, D. and Schreier, P. J.}, year={2014}, pages={6491–6510} }'
  chicago: 'Olhede, S. C., D. Ramírez, and P. J. Schreier. “Detecting Directionality
    in Random Fields Using the Monogenic Signal.” <i>IEEE Trans.\ Inform.\ Theory</i>
    60, no. 10 (2014): 6491–6510. <a href="https://doi.org/10.1109/TIT.2014.2342734">https://doi.org/10.1109/TIT.2014.2342734</a>.'
  ieee: 'S. C. Olhede, D. Ramírez, and P. J. Schreier, “Detecting Directionality in
    Random Fields Using the Monogenic Signal,” <i>IEEE Trans.\ Inform.\ Theory</i>,
    vol. 60, no. 10, pp. 6491–6510, 2014, doi: <a href="https://doi.org/10.1109/TIT.2014.2342734">10.1109/TIT.2014.2342734</a>.'
  mla: Olhede, S. C., et al. “Detecting Directionality in Random Fields Using the
    Monogenic Signal.” <i>IEEE Trans.\ Inform.\ Theory</i>, vol. 60, no. 10, 2014,
    pp. 6491–6510, doi:<a href="https://doi.org/10.1109/TIT.2014.2342734">10.1109/TIT.2014.2342734</a>.
  short: S.C. Olhede, D. Ramírez, P.J. Schreier, IEEE Trans.\ Inform.\ Theory 60 (2014)
    6491–6510.
date_created: 2023-01-30T11:51:48Z
date_updated: 2023-01-30T12:00:35Z
department:
- _id: '263'
doi: 10.1109/TIT.2014.2342734
intvolume: '        60'
issue: '10'
page: 6491–6510
publication: IEEE Trans.\ Inform.\ Theory
status: public
title: Detecting Directionality in Random Fields Using the Monogenic Signal
type: journal_article
user_id: '43497'
volume: 60
year: '2014'
...
---
_id: '40760'
abstract:
- lang: eng
  text: Alternating minimization and steepest descent are commonly used strategies
    to obtain interference alignment (IA) solutions in the $K$-user multiple-input
    multiple-output (MIMO) interference channel (IC). Although these algorithms are
    shown to converge monotonically, they experience a poor convergence rate, requiring
    an enormous amount of iterations which substantially increases with the size of
    the scenario. To alleviate this drawback, in this letter we resort to the Gauss-Newton
    (GN) method, which is well-known to experience quadratic convergence when the
    iterates are sufficiently close to the optimum. We discuss the convergence properties
    of the proposed GN algorithm and provide several numerical examples showing that
    it always converges to the optimum with quadratic rate, reducing dramatically
    the required computation time in comparison to other algorithms, hence paving
    a new way for the design of IA algorithms.
author:
- first_name: Christian
  full_name: Lameiro, Christian
  last_name: Lameiro
- first_name: Ignacio
  full_name: Santamaría, Ignacio
  last_name: Santamaría
citation:
  ama: Lameiro C, Santamaría I. A Quadratically Convergent Method for Interference
    Alignment in MIMO Interference Channels. <i>IEEE Signal Process Lett</i>. 2014;21:1423–1427.
    doi:<a href="https://doi.org/10.1109/LSP.2014.2338132">10.1109/LSP.2014.2338132</a>
  apa: Lameiro, C., &#38; Santamaría, I. (2014). A Quadratically Convergent Method
    for Interference Alignment in MIMO Interference Channels. <i>IEEE Signal Process.
    Lett.</i>, <i>21</i>, 1423–1427. <a href="https://doi.org/10.1109/LSP.2014.2338132">https://doi.org/10.1109/LSP.2014.2338132</a>
  bibtex: '@article{Lameiro_Santamaría_2014, title={A Quadratically Convergent Method
    for Interference Alignment in MIMO Interference Channels}, volume={21}, DOI={<a
    href="https://doi.org/10.1109/LSP.2014.2338132">10.1109/LSP.2014.2338132</a>},
    journal={IEEE Signal Process. Lett.}, author={Lameiro, Christian and Santamaría,
    Ignacio}, year={2014}, pages={1423–1427} }'
  chicago: 'Lameiro, Christian, and Ignacio Santamaría. “A Quadratically Convergent
    Method for Interference Alignment in MIMO Interference Channels.” <i>IEEE Signal
    Process. Lett.</i> 21 (2014): 1423–1427. <a href="https://doi.org/10.1109/LSP.2014.2338132">https://doi.org/10.1109/LSP.2014.2338132</a>.'
  ieee: 'C. Lameiro and I. Santamaría, “A Quadratically Convergent Method for Interference
    Alignment in MIMO Interference Channels,” <i>IEEE Signal Process. Lett.</i>, vol.
    21, pp. 1423–1427, 2014, doi: <a href="https://doi.org/10.1109/LSP.2014.2338132">10.1109/LSP.2014.2338132</a>.'
  mla: Lameiro, Christian, and Ignacio Santamaría. “A Quadratically Convergent Method
    for Interference Alignment in MIMO Interference Channels.” <i>IEEE Signal Process.
    Lett.</i>, vol. 21, 2014, pp. 1423–1427, doi:<a href="https://doi.org/10.1109/LSP.2014.2338132">10.1109/LSP.2014.2338132</a>.
  short: C. Lameiro, I. Santamaría, IEEE Signal Process. Lett. 21 (2014) 1423–1427.
date_created: 2023-01-30T11:51:48Z
date_updated: 2023-01-30T12:00:39Z
department:
- _id: '263'
doi: 10.1109/LSP.2014.2338132
intvolume: '        21'
page: 1423–1427
publication: IEEE Signal Process. Lett.
status: public
title: A Quadratically Convergent Method for Interference Alignment in MIMO Interference
  Channels
type: journal_article
user_id: '43497'
volume: 21
year: '2014'
...
---
_id: '40761'
abstract:
- lang: eng
  text: This paper derives the interference-temperature (IT) limit for a multi-antenna
    primary user (PU) with a rate constraint. While in the case of a single-antenna
    PU there is a one-to-one mapping between IT and achievable rate, this correspondence
    does not hold anymore when a multiple-input multiple-output (MIMO) system is considered.
    In such cases, the spatial distribution of the interference must be taken into
    account, since it strongly affects the PU performance. To this end, we derive
    a closed-form expression for the maximum IT that can be tolerated by identifying
    the worst-case interference covariance matrix, which results in a multilevel waterfilling
    problem.
author:
- first_name: Christian
  full_name: Lameiro, Christian
  last_name: Lameiro
- first_name: Wolfgang
  full_name: Utschick, Wolfgang
  last_name: Utschick
- first_name: Ignacio
  full_name: Santamaría, Ignacio
  last_name: Santamaría
citation:
  ama: 'Lameiro C, Utschick W, Santamaría I. Interference-Temperature Limit for Cognitive
    Radio Networks with MIMO Primary Users. In: <i>Proc.\ Asilomar Conf.\ Signals
    Syst.\ Computers</i>. ; 2014. doi:<a href="https://doi.org/10.1109/ACSSC.2014.7094625">10.1109/ACSSC.2014.7094625</a>'
  apa: Lameiro, C., Utschick, W., &#38; Santamaría, I. (2014). Interference-Temperature
    Limit for Cognitive Radio Networks with MIMO Primary Users. <i>Proc.\ Asilomar
    Conf.\ Signals Syst.\ Computers</i>. <a href="https://doi.org/10.1109/ACSSC.2014.7094625">https://doi.org/10.1109/ACSSC.2014.7094625</a>
  bibtex: '@inproceedings{Lameiro_Utschick_Santamaría_2014, place={Pacific Grove,
    CA, USA}, title={Interference-Temperature Limit for Cognitive Radio Networks with
    MIMO Primary Users}, DOI={<a href="https://doi.org/10.1109/ACSSC.2014.7094625">10.1109/ACSSC.2014.7094625</a>},
    booktitle={Proc.\ Asilomar Conf.\ Signals Syst.\ Computers}, author={Lameiro,
    Christian and Utschick, Wolfgang and Santamaría, Ignacio}, year={2014} }'
  chicago: Lameiro, Christian, Wolfgang Utschick, and Ignacio Santamaría. “Interference-Temperature
    Limit for Cognitive Radio Networks with MIMO Primary Users.” In <i>Proc.\ Asilomar
    Conf.\ Signals Syst.\ Computers</i>. Pacific Grove, CA, USA, 2014. <a href="https://doi.org/10.1109/ACSSC.2014.7094625">https://doi.org/10.1109/ACSSC.2014.7094625</a>.
  ieee: 'C. Lameiro, W. Utschick, and I. Santamaría, “Interference-Temperature Limit
    for Cognitive Radio Networks with MIMO Primary Users,” 2014, doi: <a href="https://doi.org/10.1109/ACSSC.2014.7094625">10.1109/ACSSC.2014.7094625</a>.'
  mla: Lameiro, Christian, et al. “Interference-Temperature Limit for Cognitive Radio
    Networks with MIMO Primary Users.” <i>Proc.\ Asilomar Conf.\ Signals Syst.\ Computers</i>,
    2014, doi:<a href="https://doi.org/10.1109/ACSSC.2014.7094625">10.1109/ACSSC.2014.7094625</a>.
  short: 'C. Lameiro, W. Utschick, I. Santamaría, in: Proc.\ Asilomar Conf.\ Signals
    Syst.\ Computers, Pacific Grove, CA, USA, 2014.'
date_created: 2023-01-30T11:51:48Z
date_updated: 2023-01-30T12:00:33Z
department:
- _id: '263'
doi: 10.1109/ACSSC.2014.7094625
place: Pacific Grove, CA, USA
publication: Proc.\ Asilomar Conf.\ Signals Syst.\ Computers
status: public
title: Interference-Temperature Limit for Cognitive Radio Networks with MIMO Primary
  Users
type: conference
user_id: '43497'
year: '2014'
...
---
_id: '40759'
abstract:
- lang: eng
  text: We derive an estimator of the cycle period of a univariate cyclostationary
    process based on an information- theoretic criterion. Transforming the univariate
    cyclostationary process into a vector-valued wide-sense stationary process allows
    us to obtain the structure of the covariance matrix, which is block-Toeplitz,
    and its block size depends on the unknown cycle period. Therefore, we sweep the
    block size and obtain the ML estimate of the covariance matrix, required for the
    information- theoretic criterion. Since there are no closed-form ML estimates
    of block-Toeplitz matrices, we asymptotically approximate them as block-circulant.
    Finally, some numerical examples show the good performance of the proposed estimator.
author:
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: P. J.
  full_name: Schreier, P. J.
  last_name: Schreier
- first_name: J.
  full_name: Vía, J.
  last_name: Vía
- first_name: I.
  full_name: Santamaría, I.
  last_name: Santamaría
- first_name: L. L.
  full_name: Scharf, L. L.
  last_name: Scharf
citation:
  ama: 'Ramírez D, Schreier PJ, Vía J, Santamaría I, Scharf LL. A Regularized Maximum
    Likelihood Estimator for the Period of a Cyclostationary Process. In: <i>Proc.\
    Asilomar Conf.\ Signals Syst.\ Computers</i>. ; 2014.'
  apa: Ramírez, D., Schreier, P. J., Vía, J., Santamaría, I., &#38; Scharf, L. L.
    (2014). A Regularized Maximum Likelihood Estimator for the Period of a Cyclostationary
    Process. <i>Proc.\ Asilomar Conf.\ Signals Syst.\ Computers</i>.
  bibtex: '@inproceedings{Ramírez_Schreier_Vía_Santamaría_Scharf_2014, place={Pacific
    Grove, USA}, title={A Regularized Maximum Likelihood Estimator for the Period
    of a Cyclostationary Process}, booktitle={Proc.\ Asilomar Conf.\ Signals Syst.\
    Computers}, author={Ramírez, D. and Schreier, P. J. and Vía, J. and Santamaría,
    I. and Scharf, L. L.}, year={2014} }'
  chicago: Ramírez, D., P. J. Schreier, J. Vía, I. Santamaría, and L. L. Scharf. “A
    Regularized Maximum Likelihood Estimator for the Period of a Cyclostationary Process.”
    In <i>Proc.\ Asilomar Conf.\ Signals Syst.\ Computers</i>. Pacific Grove, USA,
    2014.
  ieee: D. Ramírez, P. J. Schreier, J. Vía, I. Santamaría, and L. L. Scharf, “A Regularized
    Maximum Likelihood Estimator for the Period of a Cyclostationary Process,” 2014.
  mla: Ramírez, D., et al. “A Regularized Maximum Likelihood Estimator for the Period
    of a Cyclostationary Process.” <i>Proc.\ Asilomar Conf.\ Signals Syst.\ Computers</i>,
    2014.
  short: 'D. Ramírez, P.J. Schreier, J. Vía, I. Santamaría, L.L. Scharf, in: Proc.\
    Asilomar Conf.\ Signals Syst.\ Computers, Pacific Grove, USA, 2014.'
date_created: 2023-01-30T11:51:48Z
date_updated: 2023-01-30T12:00:37Z
department:
- _id: '263'
place: Pacific Grove, USA
publication: Proc.\ Asilomar Conf.\ Signals Syst.\ Computers
status: public
title: A Regularized Maximum Likelihood Estimator for the Period of a Cyclostationary
  Process
type: conference
user_id: '43497'
year: '2014'
...
---
_id: '40763'
abstract:
- lang: eng
  text: 'Complex-valued signals occur in many areas of science and engineering and
    are thus of fundamental interest. When developing signal processing methods in
    the complex domain, there are two key issues: making use of the full statistical
    information and optimization. In this article, we review the necessary tools to
    address these two key issues and provide examples in filtering and blind source
    separation (BSS) that utilize these tools.'
author:
- first_name: Tulay
  full_name: Adali, Tulay
  last_name: Adali
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
citation:
  ama: Adali T, Schreier PJ. Optimization and estimation of complex-valued signals.
    <i>IEEE Signal Processing Magazine</i>. 2014;31(5):112–128. doi:<a href="https://doi.org/10.1109/MSP.2013.2287951">10.1109/MSP.2013.2287951</a>
  apa: Adali, T., &#38; Schreier, P. J. (2014). Optimization and estimation of complex-valued
    signals. <i>IEEE Signal Processing Magazine</i>, <i>31</i>(5), 112–128. <a href="https://doi.org/10.1109/MSP.2013.2287951">https://doi.org/10.1109/MSP.2013.2287951</a>
  bibtex: '@article{Adali_Schreier_2014, title={Optimization and estimation of complex-valued
    signals}, volume={31}, DOI={<a href="https://doi.org/10.1109/MSP.2013.2287951">10.1109/MSP.2013.2287951</a>},
    number={5}, journal={IEEE Signal Processing Magazine}, author={Adali, Tulay and
    Schreier, Peter J.}, year={2014}, pages={112–128} }'
  chicago: 'Adali, Tulay, and Peter J. Schreier. “Optimization and Estimation of Complex-Valued
    Signals.” <i>IEEE Signal Processing Magazine</i> 31, no. 5 (2014): 112–128. <a
    href="https://doi.org/10.1109/MSP.2013.2287951">https://doi.org/10.1109/MSP.2013.2287951</a>.'
  ieee: 'T. Adali and P. J. Schreier, “Optimization and estimation of complex-valued
    signals,” <i>IEEE Signal Processing Magazine</i>, vol. 31, no. 5, pp. 112–128,
    2014, doi: <a href="https://doi.org/10.1109/MSP.2013.2287951">10.1109/MSP.2013.2287951</a>.'
  mla: Adali, Tulay, and Peter J. Schreier. “Optimization and Estimation of Complex-Valued
    Signals.” <i>IEEE Signal Processing Magazine</i>, vol. 31, no. 5, 2014, pp. 112–128,
    doi:<a href="https://doi.org/10.1109/MSP.2013.2287951">10.1109/MSP.2013.2287951</a>.
  short: T. Adali, P.J. Schreier, IEEE Signal Processing Magazine 31 (2014) 112–128.
date_created: 2023-01-30T11:51:48Z
date_updated: 2023-01-30T12:00:30Z
department:
- _id: '263'
doi: 10.1109/MSP.2013.2287951
intvolume: '        31'
issue: '5'
page: 112–128
publication: IEEE Signal Processing Magazine
status: public
title: Optimization and estimation of complex-valued signals
type: journal_article
user_id: '43497'
volume: 31
year: '2014'
...
---
_id: '40769'
author:
- first_name: Christian
  full_name: Lameiro, Christian
  last_name: Lameiro
- first_name: Ignacio
  full_name: Santamaría, Ignacio
  last_name: Santamaría
- first_name: Wolfgang
  full_name: Utschick, Wolfgang
  last_name: Utschick
citation:
  ama: 'Lameiro C, Santamaría I, Utschick W. Interference Shaping Constraints for
    Underlay MIMO Interference Channels. In: <i>Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process.</i> ; 2014. doi:<a href="https://doi.org/10.1109/ICASSP.2014.6855020">10.1109/ICASSP.2014.6855020</a>'
  apa: Lameiro, C., Santamaría, I., &#38; Utschick, W. (2014). Interference Shaping
    Constraints for Underlay MIMO Interference Channels. <i>Proc.\ IEEE Int.\ Conf.\
    Acoustics, Speech and Signal Process.</i> <a href="https://doi.org/10.1109/ICASSP.2014.6855020">https://doi.org/10.1109/ICASSP.2014.6855020</a>
  bibtex: '@inproceedings{Lameiro_Santamaría_Utschick_2014, place={Florence, Italy},
    title={Interference Shaping Constraints for Underlay MIMO Interference Channels},
    DOI={<a href="https://doi.org/10.1109/ICASSP.2014.6855020">10.1109/ICASSP.2014.6855020</a>},
    booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Lameiro,
    Christian and Santamaría, Ignacio and Utschick, Wolfgang}, year={2014} }'
  chicago: Lameiro, Christian, Ignacio Santamaría, and Wolfgang Utschick. “Interference
    Shaping Constraints for Underlay MIMO Interference Channels.” In <i>Proc.\ IEEE
    Int.\ Conf.\ Acoustics, Speech and Signal Process.</i> Florence, Italy, 2014.
    <a href="https://doi.org/10.1109/ICASSP.2014.6855020">https://doi.org/10.1109/ICASSP.2014.6855020</a>.
  ieee: 'C. Lameiro, I. Santamaría, and W. Utschick, “Interference Shaping Constraints
    for Underlay MIMO Interference Channels,” 2014, doi: <a href="https://doi.org/10.1109/ICASSP.2014.6855020">10.1109/ICASSP.2014.6855020</a>.'
  mla: Lameiro, Christian, et al. “Interference Shaping Constraints for Underlay MIMO
    Interference Channels.” <i>Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal
    Process.</i>, 2014, doi:<a href="https://doi.org/10.1109/ICASSP.2014.6855020">10.1109/ICASSP.2014.6855020</a>.
  short: 'C. Lameiro, I. Santamaría, W. Utschick, in: Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process., Florence, Italy, 2014.'
date_created: 2023-01-30T11:51:49Z
date_updated: 2023-01-30T12:00:46Z
department:
- _id: '263'
doi: 10.1109/ICASSP.2014.6855020
place: Florence, Italy
publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.
status: public
title: Interference Shaping Constraints for Underlay MIMO Interference Channels
type: conference
user_id: '43497'
year: '2014'
...
---
_id: '40765'
author:
- first_name: Manuel
  full_name: Stein, Manuel
  last_name: Stein
- first_name: Amine
  full_name: Mezghani, Amine
  last_name: Mezghani
- first_name: Josef A.
  full_name: Nossek, Josef A.
  last_name: Nossek
citation:
  ama: Stein M, Mezghani A, Nossek JA. A lower bound for the Fisher information measure.
    <i>IEEE Signal Process\ Lett</i>. 2014;21(7):796–799. doi:<a href="https://doi.org/10.1109/LSP.2014.2316008">10.1109/LSP.2014.2316008</a>
  apa: Stein, M., Mezghani, A., &#38; Nossek, J. A. (2014). A lower bound for the
    Fisher information measure. <i>IEEE Signal Process.\ Lett.</i>, <i>21</i>(7),
    796–799. <a href="https://doi.org/10.1109/LSP.2014.2316008">https://doi.org/10.1109/LSP.2014.2316008</a>
  bibtex: '@article{Stein_Mezghani_Nossek_2014, title={A lower bound for the Fisher
    information measure}, volume={21}, DOI={<a href="https://doi.org/10.1109/LSP.2014.2316008">10.1109/LSP.2014.2316008</a>},
    number={7}, journal={IEEE Signal Process.\ Lett.}, author={Stein, Manuel and Mezghani,
    Amine and Nossek, Josef A.}, year={2014}, pages={796–799} }'
  chicago: 'Stein, Manuel, Amine Mezghani, and Josef A. Nossek. “A Lower Bound for
    the Fisher Information Measure.” <i>IEEE Signal Process.\ Lett.</i> 21, no. 7
    (2014): 796–799. <a href="https://doi.org/10.1109/LSP.2014.2316008">https://doi.org/10.1109/LSP.2014.2316008</a>.'
  ieee: 'M. Stein, A. Mezghani, and J. A. Nossek, “A lower bound for the Fisher information
    measure,” <i>IEEE Signal Process.\ Lett.</i>, vol. 21, no. 7, pp. 796–799, 2014,
    doi: <a href="https://doi.org/10.1109/LSP.2014.2316008">10.1109/LSP.2014.2316008</a>.'
  mla: Stein, Manuel, et al. “A Lower Bound for the Fisher Information Measure.” <i>IEEE
    Signal Process.\ Lett.</i>, vol. 21, no. 7, 2014, pp. 796–799, doi:<a href="https://doi.org/10.1109/LSP.2014.2316008">10.1109/LSP.2014.2316008</a>.
  short: M. Stein, A. Mezghani, J.A. Nossek, IEEE Signal Process.\ Lett. 21 (2014)
    796–799.
date_created: 2023-01-30T11:51:49Z
date_updated: 2023-01-30T12:00:44Z
department:
- _id: '263'
doi: 10.1109/LSP.2014.2316008
intvolume: '        21'
issue: '7'
page: 796–799
publication: IEEE Signal Process.\ Lett.
status: public
title: A lower bound for the Fisher information measure
type: journal_article
user_id: '43497'
volume: 21
year: '2014'
...
---
_id: '8171'
abstract:
- lang: eng
  text: "The polynomial hierarchy plays a central role in classical complexity theory.
    Here, we define\r\na quantum generalization of the polynomial hierarchy, and initiate
    its study. We show that\r\nnot only are there natural complete problems for the
    second level of this quantum hierarchy, but that these problems are in fact hard
    to approximate. Using the same techniques, we\r\nalso obtain hardness of approximation
    for the class QCMA. Our approach is based on the\r\nuse of dispersers, and is
    inspired by the classical results of Umans regarding hardness of approximation
    for the second level of the classical polynomial hierarchy [Umans, FOCS 1999].\r\nThe
    problems for which we prove hardness of approximation for include, among others,
    a\r\nquantum version of the Succinct Set Cover problem, and a variant of the local
    Hamiltonian\r\nproblem with hybrid classical-quantum ground states."
article_type: original
author:
- first_name: Sevag
  full_name: Gharibian, Sevag
  id: '71541'
  last_name: Gharibian
  orcid: 0000-0002-9992-3379
- first_name: Julia
  full_name: Kempe, Julia
  last_name: Kempe
citation:
  ama: Gharibian S, Kempe J. Hardness of approximation for quantum problems. <i>Quantum
    Information &#38; Computation</i>. 2014;14(5-6):517-540.
  apa: Gharibian, S., &#38; Kempe, J. (2014). Hardness of approximation for quantum
    problems. <i>Quantum Information &#38; Computation</i>, <i>14</i>(5–6), 517–540.
  bibtex: '@article{Gharibian_Kempe_2014, title={Hardness of approximation for quantum
    problems}, volume={14}, number={5–6}, journal={Quantum Information &#38; Computation},
    author={Gharibian, Sevag and Kempe, Julia}, year={2014}, pages={517–540} }'
  chicago: 'Gharibian, Sevag, and Julia Kempe. “Hardness of Approximation for Quantum
    Problems.” <i>Quantum Information &#38; Computation</i> 14, no. 5–6 (2014): 517–40.'
  ieee: S. Gharibian and J. Kempe, “Hardness of approximation for quantum problems,”
    <i>Quantum Information &#38; Computation</i>, vol. 14, no. 5–6, pp. 517–540, 2014.
  mla: Gharibian, Sevag, and Julia Kempe. “Hardness of Approximation for Quantum Problems.”
    <i>Quantum Information &#38; Computation</i>, vol. 14, no. 5–6, 2014, pp. 517–40.
  short: S. Gharibian, J. Kempe, Quantum Information &#38; Computation 14 (2014) 517–540.
date_created: 2019-03-01T11:56:55Z
date_updated: 2023-02-28T11:02:47Z
department:
- _id: '623'
- _id: '7'
extern: '1'
external_id:
  arxiv:
  - '1209.1055'
intvolume: '        14'
issue: 5-6
keyword:
- Hardness of approximation
- polynomial time hierarchy
- succinct set cover
- quantum complexity
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1209.1055
oa: '1'
page: 517-540
publication: Quantum Information & Computation
publication_status: published
status: public
title: Hardness of approximation for quantum problems
type: journal_article
user_id: '71541'
volume: 14
year: '2014'
...
---
_id: '8172'
abstract:
- lang: eng
  text: We show how to efficiently simulate continuous-time quantum query algorithms
    that run in time T in a manner that preserves the query complexity (within a polylogarithmic
    factor) while also incurring a small overhead cost in the total number of gates
    between queries. By small overhead, we mean T within a factor that is polylogarithmic
    in terms of T and a cost measure that reflects the cost of computing the driving
    Hamiltonian. This permits any continuous-time quantum algorithm based on an efficiently
    computable driving Hamiltonian to be converted into a gate-efficient algorithm
    with similar running time.
article_type: original
author:
- first_name: Dominic
  full_name: W. Berry, Dominic
  last_name: W. Berry
- first_name: Richard
  full_name: Cleve, Richard
  last_name: Cleve
- first_name: Sevag
  full_name: Gharibian, Sevag
  id: '71541'
  last_name: Gharibian
  orcid: 0000-0002-9992-3379
citation:
  ama: W. Berry D, Cleve R, Gharibian S. Gate-efficient discrete simulations of continuous-time
    quantum query algorithms. <i>Quantum Information &#38; Computation</i>. 2014;14(1-2):1-30.
  apa: W. Berry, D., Cleve, R., &#38; Gharibian, S. (2014). Gate-efficient discrete
    simulations of continuous-time quantum query algorithms. <i>Quantum Information
    &#38; Computation</i>, <i>14</i>(1–2), 1–30.
  bibtex: '@article{W. Berry_Cleve_Gharibian_2014, title={Gate-efficient discrete
    simulations of continuous-time quantum query algorithms}, volume={14}, number={1–2},
    journal={Quantum Information &#38; Computation}, author={W. Berry, Dominic and
    Cleve, Richard and Gharibian, Sevag}, year={2014}, pages={1–30} }'
  chicago: 'W. Berry, Dominic, Richard Cleve, and Sevag Gharibian. “Gate-Efficient
    Discrete Simulations of Continuous-Time Quantum Query Algorithms.” <i>Quantum
    Information &#38; Computation</i> 14, no. 1–2 (2014): 1–30.'
  ieee: D. W. Berry, R. Cleve, and S. Gharibian, “Gate-efficient discrete simulations
    of continuous-time quantum query algorithms,” <i>Quantum Information &#38; Computation</i>,
    vol. 14, no. 1–2, pp. 1–30, 2014.
  mla: W. Berry, Dominic, et al. “Gate-Efficient Discrete Simulations of Continuous-Time
    Quantum Query Algorithms.” <i>Quantum Information &#38; Computation</i>, vol.
    14, no. 1–2, 2014, pp. 1–30.
  short: D. W. Berry, R. Cleve, S. Gharibian, Quantum Information &#38; Computation
    14 (2014) 1–30.
date_created: 2019-03-01T11:59:24Z
date_updated: 2023-02-28T11:02:58Z
department:
- _id: '623'
- _id: '7'
extern: '1'
external_id:
  arxiv:
  - '1211.4637'
intvolume: '        14'
issue: 1-2
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1211.4637
oa: '1'
page: 1-30
publication: Quantum Information & Computation
publication_status: published
status: public
title: Gate-efficient discrete simulations of continuous-time quantum query algorithms
type: journal_article
user_id: '71541'
volume: 14
year: '2014'
...
---
_id: '34845'
abstract:
- lang: eng
  text: Computational Galois theory, in particular the problem of computing the Galois
    group of a given polynomial, is a very old problem. Currently, the best algorithmic
    solution is Stauduhar’s method. Computationally, one of the key challenges in
    the application of Stauduhar’s method is to find, for a given pair of groups H<G,
    a G-relative H-invariant, that is a multivariate polynomial F that is H-invariant,
    but not G-invariant. While generic, theoretical methods are known to find such
    F, in general they yield impractical answers. We give a general method for computing
    invariants of large degree which improves on previous known methods, as well as
    various special invariants that are derived from the structure of the groups.
    We then apply our new invariants to the task of computing the Galois groups of
    polynomials over the rational numbers, resulting in the first practical degree
    independent algorithm.
author:
- first_name: Claus
  full_name: Fieker, Claus
  last_name: Fieker
- first_name: Jürgen
  full_name: Klüners, Jürgen
  id: '21202'
  last_name: Klüners
citation:
  ama: Fieker C, Klüners J. Computation of Galois groups of rational polynomials.
    <i>LMS Journal of Computation and Mathematics</i>. 2014;17(1):141-158. doi:<a
    href="https://doi.org/10.1112/s1461157013000302">10.1112/s1461157013000302</a>
  apa: Fieker, C., &#38; Klüners, J. (2014). Computation of Galois groups of rational
    polynomials. <i>LMS Journal of Computation and Mathematics</i>, <i>17</i>(1),
    141–158. <a href="https://doi.org/10.1112/s1461157013000302">https://doi.org/10.1112/s1461157013000302</a>
  bibtex: '@article{Fieker_Klüners_2014, title={Computation of Galois groups of rational
    polynomials}, volume={17}, DOI={<a href="https://doi.org/10.1112/s1461157013000302">10.1112/s1461157013000302</a>},
    number={1}, journal={LMS Journal of Computation and Mathematics}, publisher={Wiley},
    author={Fieker, Claus and Klüners, Jürgen}, year={2014}, pages={141–158} }'
  chicago: 'Fieker, Claus, and Jürgen Klüners. “Computation of Galois Groups of Rational
    Polynomials.” <i>LMS Journal of Computation and Mathematics</i> 17, no. 1 (2014):
    141–58. <a href="https://doi.org/10.1112/s1461157013000302">https://doi.org/10.1112/s1461157013000302</a>.'
  ieee: 'C. Fieker and J. Klüners, “Computation of Galois groups of rational polynomials,”
    <i>LMS Journal of Computation and Mathematics</i>, vol. 17, no. 1, pp. 141–158,
    2014, doi: <a href="https://doi.org/10.1112/s1461157013000302">10.1112/s1461157013000302</a>.'
  mla: Fieker, Claus, and Jürgen Klüners. “Computation of Galois Groups of Rational
    Polynomials.” <i>LMS Journal of Computation and Mathematics</i>, vol. 17, no.
    1, Wiley, 2014, pp. 141–58, doi:<a href="https://doi.org/10.1112/s1461157013000302">10.1112/s1461157013000302</a>.
  short: C. Fieker, J. Klüners, LMS Journal of Computation and Mathematics 17 (2014)
    141–158.
date_created: 2022-12-22T10:53:44Z
date_updated: 2023-03-06T09:43:56Z
department:
- _id: '102'
doi: 10.1112/s1461157013000302
external_id:
  arxiv:
  - '1211.3588'
intvolume: '        17'
issue: '1'
keyword:
- Computational Theory and Mathematics
- General Mathematics
language:
- iso: eng
page: 141-158
publication: LMS Journal of Computation and Mathematics
publication_identifier:
  issn:
  - 1461-1570
publication_status: published
publisher: Wiley
status: public
title: Computation of Galois groups of rational polynomials
type: journal_article
user_id: '93826'
volume: 17
year: '2014'
...
---
_id: '39483'
author:
- first_name: F.F.
  full_name: Vidor, F.F.
  last_name: Vidor
- first_name: G.I.
  full_name: Wirth, G.I.
  last_name: Wirth
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: Vidor FF, Wirth GI, Hilleringmann U. Low temperature fabrication of a ZnO nanoparticle
    thin-film transistor suitable for flexible electronics. <i>Microelectronics Reliability</i>.
    2014;54(12):2760-2765. doi:<a href="https://doi.org/10.1016/j.microrel.2014.07.147">10.1016/j.microrel.2014.07.147</a>
  apa: Vidor, F. F., Wirth, G. I., &#38; Hilleringmann, U. (2014). Low temperature
    fabrication of a ZnO nanoparticle thin-film transistor suitable for flexible electronics.
    <i>Microelectronics Reliability</i>, <i>54</i>(12), 2760–2765. <a href="https://doi.org/10.1016/j.microrel.2014.07.147">https://doi.org/10.1016/j.microrel.2014.07.147</a>
  bibtex: '@article{Vidor_Wirth_Hilleringmann_2014, title={Low temperature fabrication
    of a ZnO nanoparticle thin-film transistor suitable for flexible electronics},
    volume={54}, DOI={<a href="https://doi.org/10.1016/j.microrel.2014.07.147">10.1016/j.microrel.2014.07.147</a>},
    number={12}, journal={Microelectronics Reliability}, publisher={Elsevier BV},
    author={Vidor, F.F. and Wirth, G.I. and Hilleringmann, Ulrich}, year={2014}, pages={2760–2765}
    }'
  chicago: 'Vidor, F.F., G.I. Wirth, and Ulrich Hilleringmann. “Low Temperature Fabrication
    of a ZnO Nanoparticle Thin-Film Transistor Suitable for Flexible Electronics.”
    <i>Microelectronics Reliability</i> 54, no. 12 (2014): 2760–65. <a href="https://doi.org/10.1016/j.microrel.2014.07.147">https://doi.org/10.1016/j.microrel.2014.07.147</a>.'
  ieee: 'F. F. Vidor, G. I. Wirth, and U. Hilleringmann, “Low temperature fabrication
    of a ZnO nanoparticle thin-film transistor suitable for flexible electronics,”
    <i>Microelectronics Reliability</i>, vol. 54, no. 12, pp. 2760–2765, 2014, doi:
    <a href="https://doi.org/10.1016/j.microrel.2014.07.147">10.1016/j.microrel.2014.07.147</a>.'
  mla: Vidor, F. F., et al. “Low Temperature Fabrication of a ZnO Nanoparticle Thin-Film
    Transistor Suitable for Flexible Electronics.” <i>Microelectronics Reliability</i>,
    vol. 54, no. 12, Elsevier BV, 2014, pp. 2760–65, doi:<a href="https://doi.org/10.1016/j.microrel.2014.07.147">10.1016/j.microrel.2014.07.147</a>.
  short: F.F. Vidor, G.I. Wirth, U. Hilleringmann, Microelectronics Reliability 54
    (2014) 2760–2765.
date_created: 2023-01-24T11:25:42Z
date_updated: 2023-03-22T10:15:06Z
department:
- _id: '59'
doi: 10.1016/j.microrel.2014.07.147
intvolume: '        54'
issue: '12'
keyword:
- Electrical and Electronic Engineering
- Surfaces
- Coatings and Films
- Safety
- Risk
- Reliability and Quality
- Condensed Matter Physics
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 2760-2765
publication: Microelectronics Reliability
publication_identifier:
  issn:
  - 0026-2714
publication_status: published
publisher: Elsevier BV
status: public
title: Low temperature fabrication of a ZnO nanoparticle thin-film transistor suitable
  for flexible electronics
type: journal_article
user_id: '20179'
volume: 54
year: '2014'
...
---
_id: '39484'
author:
- first_name: Christian
  full_name: Hangmann, Christian
  last_name: Hangmann
- first_name: Christian
  full_name: Hedayat, Christian
  last_name: Hedayat
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Hangmann C, Hedayat C, Hilleringmann U. Stability Analysis of a Charge Pump
    Phase-Locked Loop Using Autonomous Difference Equations. <i>IEEE Transactions
    on Circuits and Systems I: Regular Papers</i>. 2014;61(9):2569-2577. doi:<a href="https://doi.org/10.1109/tcsi.2014.2333331">10.1109/tcsi.2014.2333331</a>'
  apa: 'Hangmann, C., Hedayat, C., &#38; Hilleringmann, U. (2014). Stability Analysis
    of a Charge Pump Phase-Locked Loop Using Autonomous Difference Equations. <i>IEEE
    Transactions on Circuits and Systems I: Regular Papers</i>, <i>61</i>(9), 2569–2577.
    <a href="https://doi.org/10.1109/tcsi.2014.2333331">https://doi.org/10.1109/tcsi.2014.2333331</a>'
  bibtex: '@article{Hangmann_Hedayat_Hilleringmann_2014, title={Stability Analysis
    of a Charge Pump Phase-Locked Loop Using Autonomous Difference Equations}, volume={61},
    DOI={<a href="https://doi.org/10.1109/tcsi.2014.2333331">10.1109/tcsi.2014.2333331</a>},
    number={9}, journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
    publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Hangmann,
    Christian and Hedayat, Christian and Hilleringmann, Ulrich}, year={2014}, pages={2569–2577}
    }'
  chicago: 'Hangmann, Christian, Christian Hedayat, and Ulrich Hilleringmann. “Stability
    Analysis of a Charge Pump Phase-Locked Loop Using Autonomous Difference Equations.”
    <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i> 61, no. 9 (2014):
    2569–77. <a href="https://doi.org/10.1109/tcsi.2014.2333331">https://doi.org/10.1109/tcsi.2014.2333331</a>.'
  ieee: 'C. Hangmann, C. Hedayat, and U. Hilleringmann, “Stability Analysis of a Charge
    Pump Phase-Locked Loop Using Autonomous Difference Equations,” <i>IEEE Transactions
    on Circuits and Systems I: Regular Papers</i>, vol. 61, no. 9, pp. 2569–2577,
    2014, doi: <a href="https://doi.org/10.1109/tcsi.2014.2333331">10.1109/tcsi.2014.2333331</a>.'
  mla: 'Hangmann, Christian, et al. “Stability Analysis of a Charge Pump Phase-Locked
    Loop Using Autonomous Difference Equations.” <i>IEEE Transactions on Circuits
    and Systems I: Regular Papers</i>, vol. 61, no. 9, Institute of Electrical and
    Electronics Engineers (IEEE), 2014, pp. 2569–77, doi:<a href="https://doi.org/10.1109/tcsi.2014.2333331">10.1109/tcsi.2014.2333331</a>.'
  short: 'C. Hangmann, C. Hedayat, U. Hilleringmann, IEEE Transactions on Circuits
    and Systems I: Regular Papers 61 (2014) 2569–2577.'
date_created: 2023-01-24T11:26:19Z
date_updated: 2023-03-22T10:15:23Z
department:
- _id: '59'
doi: 10.1109/tcsi.2014.2333331
intvolume: '        61'
issue: '9'
keyword:
- Electrical and Electronic Engineering
language:
- iso: eng
page: 2569-2577
publication: 'IEEE Transactions on Circuits and Systems I: Regular Papers'
publication_identifier:
  issn:
  - 1549-8328
  - 1558-0806
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: Stability Analysis of a Charge Pump Phase-Locked Loop Using Autonomous Difference
  Equations
type: journal_article
user_id: '20179'
volume: 61
year: '2014'
...
---
_id: '42793'
abstract:
- lang: eng
  text: Suppose Q is a definite quadratic form on a vector space V over some totally
    real field K ≠ Q. Then the maximal integral Zₖ-lattices in (V,Q) are locally isometric
    everywhere and hence form a single genus. We enumerate all orthogonal spaces (V,Q)
    of dimension at least 3, where the corresponding genus of maximal integral lattices
    consists of a single isometry class. It turns out, there are 471 such genera.
    Moreover, the dimension of V and the degree of K are bounded by 6 and 5 respectively.
    This classification also yields all maximal quaternion orders of type number one.
author:
- first_name: Markus
  full_name: Kirschmer, Markus
  id: '82258'
  last_name: Kirschmer
citation:
  ama: Kirschmer M. One-class genera of maximal integral quadratic forms. <i>Journal
    of Number Theory</i>. 2014;136:375-393. doi:<a href="https://doi.org/10.1016/j.jnt.2013.10.007">10.1016/j.jnt.2013.10.007</a>
  apa: Kirschmer, M. (2014). One-class genera of maximal integral quadratic forms.
    <i>Journal of Number Theory</i>, <i>136</i>, 375–393. <a href="https://doi.org/10.1016/j.jnt.2013.10.007">https://doi.org/10.1016/j.jnt.2013.10.007</a>
  bibtex: '@article{Kirschmer_2014, title={One-class genera of maximal integral quadratic
    forms}, volume={136}, DOI={<a href="https://doi.org/10.1016/j.jnt.2013.10.007">10.1016/j.jnt.2013.10.007</a>},
    journal={Journal of Number Theory}, publisher={Elsevier BV}, author={Kirschmer,
    Markus}, year={2014}, pages={375–393} }'
  chicago: 'Kirschmer, Markus. “One-Class Genera of Maximal Integral Quadratic Forms.”
    <i>Journal of Number Theory</i> 136 (2014): 375–93. <a href="https://doi.org/10.1016/j.jnt.2013.10.007">https://doi.org/10.1016/j.jnt.2013.10.007</a>.'
  ieee: 'M. Kirschmer, “One-class genera of maximal integral quadratic forms,” <i>Journal
    of Number Theory</i>, vol. 136, pp. 375–393, 2014, doi: <a href="https://doi.org/10.1016/j.jnt.2013.10.007">10.1016/j.jnt.2013.10.007</a>.'
  mla: Kirschmer, Markus. “One-Class Genera of Maximal Integral Quadratic Forms.”
    <i>Journal of Number Theory</i>, vol. 136, Elsevier BV, 2014, pp. 375–93, doi:<a
    href="https://doi.org/10.1016/j.jnt.2013.10.007">10.1016/j.jnt.2013.10.007</a>.
  short: M. Kirschmer, Journal of Number Theory 136 (2014) 375–393.
date_created: 2023-03-07T08:29:34Z
date_updated: 2023-04-04T09:13:29Z
department:
- _id: '102'
doi: 10.1016/j.jnt.2013.10.007
extern: '1'
intvolume: '       136'
keyword:
- Algebra and Number Theory
language:
- iso: eng
page: 375-393
publication: Journal of Number Theory
publication_identifier:
  issn:
  - 0022-314X
publication_status: published
publisher: Elsevier BV
status: public
title: One-class genera of maximal integral quadratic forms
type: journal_article
user_id: '93826'
volume: 136
year: '2014'
...
---
_id: '39497'
abstract:
- lang: eng
  text: The wide usage of thermoelectric generators (TEG) is still blocked by very
    high product costs. This paper presents anodized aluminum (Al) as an effective
    and cheap alternative for ceramics like alumina (Al2O3) or aluminum nitride (AlN).
    Al has a significantly higher thermal conductivity as both named ceramics. In
    addition, the lower thermal stability of Al is still high enough to work with
    bismuth telluride based modules, which are most common. To show the advantages
    of the changed substrate, finite element method (FEM) simulations were performed.
    These simulations show that by changing the cold side substrate material the temperature
    drop across the substrate is reduced by 60 K. This correlates to a theoretical
    power gain of more than 20 {%}. Furthermore, Al can be shaped much easier than
    a ceramic material. The biggest advantage is obviously the price. Anodized Al
    is around twenty times cheaper than Al2O3. To demonstrate the easy fabrication
    of the proposed substrate, samples were prepared only with widely used processes
    like those used for conventional printed circuit boards.
author:
- first_name: F.
  full_name: Assion, F.
  last_name: Assion
- first_name: V.
  full_name: Geneiß, V.
  last_name: Geneiß
- first_name: M.
  full_name: Schönhoff, M.
  last_name: Schönhoff
- first_name: C.
  full_name: Hedayat, C.
  last_name: Hedayat
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Assion F, Geneiß V, Schönhoff M, Hedayat C, Hilleringmann U. Anodized Aluminum
    as Effective and Cheap Alternative Substrate for Thermoelectric Generators. In:
    Amaldi A, Tang F, eds. <i>Proceedings of the 11th European Conference on Thermoelectrics</i>.
    Springer International Publishing; 2014:83–88.'
  apa: Assion, F., Geneiß, V., Schönhoff, M., Hedayat, C., &#38; Hilleringmann, U.
    (2014). Anodized Aluminum as Effective and Cheap Alternative Substrate for Thermoelectric
    Generators. In A. Amaldi &#38; F. Tang (Eds.), <i>Proceedings of the 11th European
    Conference on Thermoelectrics</i> (pp. 83–88). Springer International Publishing.
  bibtex: '@inproceedings{Assion_Geneiß_Schönhoff_Hedayat_Hilleringmann_2014, place={Cham},
    title={Anodized Aluminum as Effective and Cheap Alternative Substrate for Thermoelectric
    Generators}, booktitle={Proceedings of the 11th European Conference on Thermoelectrics},
    publisher={Springer International Publishing}, author={Assion, F. and Geneiß,
    V. and Schönhoff, M. and Hedayat, C. and Hilleringmann, Ulrich}, editor={Amaldi,
    Andrea and Tang, Francois}, year={2014}, pages={83–88} }'
  chicago: 'Assion, F., V. Geneiß, M. Schönhoff, C. Hedayat, and Ulrich Hilleringmann.
    “Anodized Aluminum as Effective and Cheap Alternative Substrate for Thermoelectric
    Generators.” In <i>Proceedings of the 11th European Conference on Thermoelectrics</i>,
    edited by Andrea Amaldi and Francois Tang, 83–88. Cham: Springer International
    Publishing, 2014.'
  ieee: F. Assion, V. Geneiß, M. Schönhoff, C. Hedayat, and U. Hilleringmann, “Anodized
    Aluminum as Effective and Cheap Alternative Substrate for Thermoelectric Generators,”
    in <i>Proceedings of the 11th European Conference on Thermoelectrics</i>, 2014,
    pp. 83–88.
  mla: Assion, F., et al. “Anodized Aluminum as Effective and Cheap Alternative Substrate
    for Thermoelectric Generators.” <i>Proceedings of the 11th European Conference
    on Thermoelectrics</i>, edited by Andrea Amaldi and Francois Tang, Springer International
    Publishing, 2014, pp. 83–88.
  short: 'F. Assion, V. Geneiß, M. Schönhoff, C. Hedayat, U. Hilleringmann, in: A.
    Amaldi, F. Tang (Eds.), Proceedings of the 11th European Conference on Thermoelectrics,
    Springer International Publishing, Cham, 2014, pp. 83–88.'
date_created: 2023-01-24T11:41:49Z
date_updated: 2023-03-22T10:09:25Z
department:
- _id: '59'
editor:
- first_name: Andrea
  full_name: Amaldi, Andrea
  last_name: Amaldi
- first_name: Francois
  full_name: Tang, Francois
  last_name: Tang
language:
- iso: eng
page: 83–88
place: Cham
publication: Proceedings of the 11th European Conference on Thermoelectrics
publication_identifier:
  isbn:
  - 978-3-319-07332-3
publisher: Springer International Publishing
status: public
title: Anodized Aluminum as Effective and Cheap Alternative Substrate for Thermoelectric
  Generators
type: conference
user_id: '20179'
year: '2014'
...
---
_id: '39498'
abstract:
- lang: eng
  text: The figure of merit needs to be determined to rate the quality of thermoelectric
    materials (TM). Therefore, it is necessary to measure all involved parameters—the
    Seebeck coefficient (S), the thermal conductivity ($\lambda$), and the electrical
    conductivity ($\sigma$).
author:
- first_name: M.
  full_name: Schönhoff, M.
  last_name: Schönhoff
- first_name: F.
  full_name: Assion, F.
  last_name: Assion
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Schönhoff M, Assion F, Hilleringmann U. A Flexible Measurement System for
    the Characterization of Thermoelectric Materials. In: Amaldi A, Tang F, eds. <i>Proceedings
    of the 11th European Conference on Thermoelectrics</i>. Springer International
    Publishing; 2014:53–60.'
  apa: Schönhoff, M., Assion, F., &#38; Hilleringmann, U. (2014). A Flexible Measurement
    System for the Characterization of Thermoelectric Materials. In A. Amaldi &#38;
    F. Tang (Eds.), <i>Proceedings of the 11th European Conference on Thermoelectrics</i>
    (pp. 53–60). Springer International Publishing.
  bibtex: '@inproceedings{Schönhoff_Assion_Hilleringmann_2014, place={Cham}, title={A
    Flexible Measurement System for the Characterization of Thermoelectric Materials},
    booktitle={Proceedings of the 11th European Conference on Thermoelectrics}, publisher={Springer
    International Publishing}, author={Schönhoff, M. and Assion, F. and Hilleringmann,
    Ulrich}, editor={Amaldi, Andrea and Tang, Francois}, year={2014}, pages={53–60}
    }'
  chicago: 'Schönhoff, M., F. Assion, and Ulrich Hilleringmann. “A Flexible Measurement
    System for the Characterization of Thermoelectric Materials.” In <i>Proceedings
    of the 11th European Conference on Thermoelectrics</i>, edited by Andrea Amaldi
    and Francois Tang, 53–60. Cham: Springer International Publishing, 2014.'
  ieee: M. Schönhoff, F. Assion, and U. Hilleringmann, “A Flexible Measurement System
    for the Characterization of Thermoelectric Materials,” in <i>Proceedings of the
    11th European Conference on Thermoelectrics</i>, 2014, pp. 53–60.
  mla: Schönhoff, M., et al. “A Flexible Measurement System for the Characterization
    of Thermoelectric Materials.” <i>Proceedings of the 11th European Conference on
    Thermoelectrics</i>, edited by Andrea Amaldi and Francois Tang, Springer International
    Publishing, 2014, pp. 53–60.
  short: 'M. Schönhoff, F. Assion, U. Hilleringmann, in: A. Amaldi, F. Tang (Eds.),
    Proceedings of the 11th European Conference on Thermoelectrics, Springer International
    Publishing, Cham, 2014, pp. 53–60.'
date_created: 2023-01-24T11:42:47Z
date_updated: 2023-03-22T10:11:00Z
department:
- _id: '59'
editor:
- first_name: Andrea
  full_name: Amaldi, Andrea
  last_name: Amaldi
- first_name: Francois
  full_name: Tang, Francois
  last_name: Tang
language:
- iso: eng
page: 53–60
place: Cham
publication: Proceedings of the 11th European Conference on Thermoelectrics
publication_identifier:
  isbn:
  - 978-3-319-07332-3
publisher: Springer International Publishing
status: public
title: A Flexible Measurement System for the Characterization of Thermoelectric Materials
type: conference
user_id: '20179'
year: '2014'
...
---
_id: '39500'
author:
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
- first_name: André
  full_name: Kleine, André
  last_name: Kleine
citation:
  ama: 'Hilleringmann U, Kleine A. Replacing TCO electrodes in dye sensitized solar
    cells by metal grids. In: du Plessis M, ed. <i>SPIE Proceedings</i>. SPIE; 2014.
    doi:<a href="https://doi.org/10.1117/12.2063218">10.1117/12.2063218</a>'
  apa: Hilleringmann, U., &#38; Kleine, A. (2014). Replacing TCO electrodes in dye
    sensitized solar cells by metal grids. In M. du Plessis (Ed.), <i>SPIE Proceedings</i>.
    SPIE. <a href="https://doi.org/10.1117/12.2063218">https://doi.org/10.1117/12.2063218</a>
  bibtex: '@inproceedings{Hilleringmann_Kleine_2014, title={Replacing TCO electrodes
    in dye sensitized solar cells by metal grids}, DOI={<a href="https://doi.org/10.1117/12.2063218">10.1117/12.2063218</a>},
    booktitle={SPIE Proceedings}, publisher={SPIE}, author={Hilleringmann, Ulrich
    and Kleine, André}, editor={du Plessis, Monuko}, year={2014} }'
  chicago: Hilleringmann, Ulrich, and André Kleine. “Replacing TCO Electrodes in Dye
    Sensitized Solar Cells by Metal Grids.” In <i>SPIE Proceedings</i>, edited by
    Monuko du Plessis. SPIE, 2014. <a href="https://doi.org/10.1117/12.2063218">https://doi.org/10.1117/12.2063218</a>.
  ieee: 'U. Hilleringmann and A. Kleine, “Replacing TCO electrodes in dye sensitized
    solar cells by metal grids,” in <i>SPIE Proceedings</i>, 2014, doi: <a href="https://doi.org/10.1117/12.2063218">10.1117/12.2063218</a>.'
  mla: Hilleringmann, Ulrich, and André Kleine. “Replacing TCO Electrodes in Dye Sensitized
    Solar Cells by Metal Grids.” <i>SPIE Proceedings</i>, edited by Monuko du Plessis,
    SPIE, 2014, doi:<a href="https://doi.org/10.1117/12.2063218">10.1117/12.2063218</a>.
  short: 'U. Hilleringmann, A. Kleine, in: M. du Plessis (Ed.), SPIE Proceedings,
    SPIE, 2014.'
date_created: 2023-01-24T11:43:24Z
date_updated: 2023-03-22T10:10:41Z
department:
- _id: '59'
doi: 10.1117/12.2063218
editor:
- first_name: Monuko
  full_name: du Plessis, Monuko
  last_name: du Plessis
language:
- iso: eng
publication: SPIE Proceedings
publication_identifier:
  issn:
  - 0277-786X
publication_status: published
publisher: SPIE
status: public
title: Replacing TCO electrodes in dye sensitized solar cells by metal grids
type: conference
user_id: '20179'
year: '2014'
...
---
_id: '39501'
author:
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Hilleringmann U. Lithografie. In: <i>Silizium-Halbleitertechnologie</i>. Springer
    Fachmedien Wiesbaden; 2014. doi:<a href="https://doi.org/10.1007/978-3-8348-2085-3_4">10.1007/978-3-8348-2085-3_4</a>'
  apa: Hilleringmann, U. (2014). Lithografie. In <i>Silizium-Halbleitertechnologie</i>.
    Springer Fachmedien Wiesbaden. <a href="https://doi.org/10.1007/978-3-8348-2085-3_4">https://doi.org/10.1007/978-3-8348-2085-3_4</a>
  bibtex: '@inbook{Hilleringmann_2014, place={Wiesbaden}, title={Lithografie}, DOI={<a
    href="https://doi.org/10.1007/978-3-8348-2085-3_4">10.1007/978-3-8348-2085-3_4</a>},
    booktitle={Silizium-Halbleitertechnologie}, publisher={Springer Fachmedien Wiesbaden},
    author={Hilleringmann, Ulrich}, year={2014} }'
  chicago: 'Hilleringmann, Ulrich. “Lithografie.” In <i>Silizium-Halbleitertechnologie</i>.
    Wiesbaden: Springer Fachmedien Wiesbaden, 2014. <a href="https://doi.org/10.1007/978-3-8348-2085-3_4">https://doi.org/10.1007/978-3-8348-2085-3_4</a>.'
  ieee: 'U. Hilleringmann, “Lithografie,” in <i>Silizium-Halbleitertechnologie</i>,
    Wiesbaden: Springer Fachmedien Wiesbaden, 2014.'
  mla: Hilleringmann, Ulrich. “Lithografie.” <i>Silizium-Halbleitertechnologie</i>,
    Springer Fachmedien Wiesbaden, 2014, doi:<a href="https://doi.org/10.1007/978-3-8348-2085-3_4">10.1007/978-3-8348-2085-3_4</a>.
  short: 'U. Hilleringmann, in: Silizium-Halbleitertechnologie, Springer Fachmedien
    Wiesbaden, Wiesbaden, 2014.'
date_created: 2023-01-24T11:44:13Z
date_updated: 2023-03-22T10:10:23Z
department:
- _id: '59'
doi: 10.1007/978-3-8348-2085-3_4
language:
- iso: eng
place: Wiesbaden
publication: Silizium-Halbleitertechnologie
publication_identifier:
  isbn:
  - '9783834813350'
  - '9783834820853'
publication_status: published
publisher: Springer Fachmedien Wiesbaden
status: public
title: Lithografie
type: book_chapter
user_id: '20179'
year: '2014'
...
---
_id: '39503'
author:
- first_name: FF
  full_name: Vidor, FF
  last_name: Vidor
- first_name: GI
  full_name: Wirth, GI
  last_name: Wirth
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Vidor F, Wirth G, Hilleringmann U. Random telegraph signal in nanoparticulated
    ZnO thin-film transistors. In: <i>The 40th International Conference on Micro and
    Nano Engineering (MNE2014)</i>. ; 2014.'
  apa: Vidor, F., Wirth, G., &#38; Hilleringmann, U. (2014). Random telegraph signal
    in nanoparticulated ZnO thin-film transistors. <i>The 40th International Conference
    on Micro and Nano Engineering (MNE2014)</i>.
  bibtex: '@inproceedings{Vidor_Wirth_Hilleringmann_2014, title={Random telegraph
    signal in nanoparticulated ZnO thin-film transistors}, booktitle={The 40th International
    Conference on Micro and Nano Engineering (MNE2014)}, author={Vidor, FF and Wirth,
    GI and Hilleringmann, Ulrich}, year={2014} }'
  chicago: Vidor, FF, GI Wirth, and Ulrich Hilleringmann. “Random Telegraph Signal
    in Nanoparticulated ZnO Thin-Film Transistors.” In <i>The 40th International Conference
    on Micro and Nano Engineering (MNE2014)</i>, 2014.
  ieee: F. Vidor, G. Wirth, and U. Hilleringmann, “Random telegraph signal in nanoparticulated
    ZnO thin-film transistors,” 2014.
  mla: Vidor, FF, et al. “Random Telegraph Signal in Nanoparticulated ZnO Thin-Film
    Transistors.” <i>The 40th International Conference on Micro and Nano Engineering
    (MNE2014)</i>, 2014.
  short: 'F. Vidor, G. Wirth, U. Hilleringmann, in: The 40th International Conference
    on Micro and Nano Engineering (MNE2014), 2014.'
date_created: 2023-01-24T11:45:54Z
date_updated: 2023-03-22T10:10:04Z
department:
- _id: '59'
language:
- iso: eng
publication: The 40th International Conference on Micro and Nano Engineering (MNE2014)
status: public
title: Random telegraph signal in nanoparticulated ZnO thin-film transistors
type: conference
user_id: '20179'
year: '2014'
...
---
_id: '39494'
author:
- first_name: Kelash
  full_name: Kanwar, Kelash
  last_name: Kanwar
- first_name: Thomas
  full_name: Mager, Thomas
  last_name: Mager
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
- first_name: Volker
  full_name: Geneiss, Volker
  last_name: Geneiss
- first_name: Christian
  full_name: Hedayat, Christian
  last_name: Hedayat
citation:
  ama: 'Kanwar K, Mager T, Hilleringmann U, Geneiss V, Hedayat C. Embedded UHF RFID
    tag design process for rubber transmission belt using 3D model. In: <i>2014 IEEE
    RFID Technology and Applications Conference (RFID-TA)</i>. IEEE; 2014. doi:<a
    href="https://doi.org/10.1109/rfid-ta.2014.6934208">10.1109/rfid-ta.2014.6934208</a>'
  apa: Kanwar, K., Mager, T., Hilleringmann, U., Geneiss, V., &#38; Hedayat, C. (2014).
    Embedded UHF RFID tag design process for rubber transmission belt using 3D model.
    <i>2014 IEEE RFID Technology and Applications Conference (RFID-TA)</i>. <a href="https://doi.org/10.1109/rfid-ta.2014.6934208">https://doi.org/10.1109/rfid-ta.2014.6934208</a>
  bibtex: '@inproceedings{Kanwar_Mager_Hilleringmann_Geneiss_Hedayat_2014, title={Embedded
    UHF RFID tag design process for rubber transmission belt using 3D model}, DOI={<a
    href="https://doi.org/10.1109/rfid-ta.2014.6934208">10.1109/rfid-ta.2014.6934208</a>},
    booktitle={2014 IEEE RFID Technology and Applications Conference (RFID-TA)}, publisher={IEEE},
    author={Kanwar, Kelash and Mager, Thomas and Hilleringmann, Ulrich and Geneiss,
    Volker and Hedayat, Christian}, year={2014} }'
  chicago: Kanwar, Kelash, Thomas Mager, Ulrich Hilleringmann, Volker Geneiss, and
    Christian Hedayat. “Embedded UHF RFID Tag Design Process for Rubber Transmission
    Belt Using 3D Model.” In <i>2014 IEEE RFID Technology and Applications Conference
    (RFID-TA)</i>. IEEE, 2014. <a href="https://doi.org/10.1109/rfid-ta.2014.6934208">https://doi.org/10.1109/rfid-ta.2014.6934208</a>.
  ieee: 'K. Kanwar, T. Mager, U. Hilleringmann, V. Geneiss, and C. Hedayat, “Embedded
    UHF RFID tag design process for rubber transmission belt using 3D model,” 2014,
    doi: <a href="https://doi.org/10.1109/rfid-ta.2014.6934208">10.1109/rfid-ta.2014.6934208</a>.'
  mla: Kanwar, Kelash, et al. “Embedded UHF RFID Tag Design Process for Rubber Transmission
    Belt Using 3D Model.” <i>2014 IEEE RFID Technology and Applications Conference
    (RFID-TA)</i>, IEEE, 2014, doi:<a href="https://doi.org/10.1109/rfid-ta.2014.6934208">10.1109/rfid-ta.2014.6934208</a>.
  short: 'K. Kanwar, T. Mager, U. Hilleringmann, V. Geneiss, C. Hedayat, in: 2014
    IEEE RFID Technology and Applications Conference (RFID-TA), IEEE, 2014.'
date_created: 2023-01-24T11:37:52Z
date_updated: 2023-03-22T10:11:38Z
department:
- _id: '59'
doi: 10.1109/rfid-ta.2014.6934208
language:
- iso: eng
publication: 2014 IEEE RFID Technology and Applications Conference (RFID-TA)
publication_status: published
publisher: IEEE
status: public
title: Embedded UHF RFID tag design process for rubber transmission belt using 3D
  model
type: conference
user_id: '20179'
year: '2014'
...
---
_id: '39486'
author:
- first_name: Christian
  full_name: Hangmann, Christian
  last_name: Hangmann
- first_name: Ingo
  full_name: Wullner, Ingo
  last_name: Wullner
- first_name: Christian
  full_name: Hedayat, Christian
  last_name: Hedayat
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: 'Hangmann C, Wullner I, Hedayat C, Hilleringmann U. Modeling and characterization
    of CP-PLL phase noise in presence of dead zone. In: <i>2014 IEEE 12th International
    New Circuits and Systems Conference (NEWCAS)</i>. IEEE; 2014. doi:<a href="https://doi.org/10.1109/newcas.2014.6934054">10.1109/newcas.2014.6934054</a>'
  apa: Hangmann, C., Wullner, I., Hedayat, C., &#38; Hilleringmann, U. (2014). Modeling
    and characterization of CP-PLL phase noise in presence of dead zone. <i>2014 IEEE
    12th International New Circuits and Systems Conference (NEWCAS)</i>. <a href="https://doi.org/10.1109/newcas.2014.6934054">https://doi.org/10.1109/newcas.2014.6934054</a>
  bibtex: '@inproceedings{Hangmann_Wullner_Hedayat_Hilleringmann_2014, title={Modeling
    and characterization of CP-PLL phase noise in presence of dead zone}, DOI={<a
    href="https://doi.org/10.1109/newcas.2014.6934054">10.1109/newcas.2014.6934054</a>},
    booktitle={2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)},
    publisher={IEEE}, author={Hangmann, Christian and Wullner, Ingo and Hedayat, Christian
    and Hilleringmann, Ulrich}, year={2014} }'
  chicago: Hangmann, Christian, Ingo Wullner, Christian Hedayat, and Ulrich Hilleringmann.
    “Modeling and Characterization of CP-PLL Phase Noise in Presence of Dead Zone.”
    In <i>2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)</i>.
    IEEE, 2014. <a href="https://doi.org/10.1109/newcas.2014.6934054">https://doi.org/10.1109/newcas.2014.6934054</a>.
  ieee: 'C. Hangmann, I. Wullner, C. Hedayat, and U. Hilleringmann, “Modeling and
    characterization of CP-PLL phase noise in presence of dead zone,” 2014, doi: <a
    href="https://doi.org/10.1109/newcas.2014.6934054">10.1109/newcas.2014.6934054</a>.'
  mla: Hangmann, Christian, et al. “Modeling and Characterization of CP-PLL Phase
    Noise in Presence of Dead Zone.” <i>2014 IEEE 12th International New Circuits
    and Systems Conference (NEWCAS)</i>, IEEE, 2014, doi:<a href="https://doi.org/10.1109/newcas.2014.6934054">10.1109/newcas.2014.6934054</a>.
  short: 'C. Hangmann, I. Wullner, C. Hedayat, U. Hilleringmann, in: 2014 IEEE 12th
    International New Circuits and Systems Conference (NEWCAS), IEEE, 2014.'
date_created: 2023-01-24T11:30:36Z
date_updated: 2023-03-22T10:12:50Z
department:
- _id: '59'
doi: 10.1109/newcas.2014.6934054
language:
- iso: eng
publication: 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)
publication_status: published
publisher: IEEE
status: public
title: Modeling and characterization of CP-PLL phase noise in presence of dead zone
type: conference
user_id: '20179'
year: '2014'
...