---
_id: '36481'
abstract:
- lang: eng
  text: 'Recent studies highlight early childhood teachers’ mathematics-related competence.
    Developing this competence should be a main aspect of early childhood teachers’
    education. This is, however, not the case in all countries. Consequently, high-quality
    professional development courses are needed. Based on research results, we developed
    a competence-oriented continuous professional development course ("EmMa") and
    examined the effects of "EmMa" by asking: How does "EmMa" affect the development
    of early childhood teachers’ i) mathematical content knowledge, ii) mathematical
    pedagogical content knowledge and iii) beliefs towards mathematics in general?
    To answer these questions, we conducted a pre-test/post-test study including a
    control group with 99 in-service early childhood teachers. Results show that the
    course affected teachers’ mathematical pedagogical content knowledge and static
    orientation towards mathematics positively. From this we conclude that scaling-up
    "EmMa" might be a suitable approach to bridge the gap between pre-service education
    with nearly no mathematics and the challenges of early mathematics education.'
author:
- first_name: Julia
  full_name: Bruns, Julia
  id: '72183'
  last_name: Bruns
  orcid: https://orcid.org/0000-0002-6604-5864
- first_name: Lars
  full_name: Eichen, Lars
  last_name: Eichen
- first_name: Hedwig
  full_name: Gasteiger, Hedwig
  last_name: Gasteiger
citation:
  ama: 'Bruns J, Eichen L, Gasteiger H. Mathematics-related Competence of Early Childhood
    Teachers Visiting a Continuous Professional Development Course: An Intervention
    Study. <i>Mathematics Teacher Education and Development (MTED)</i>. 2017;19(3):76–93.'
  apa: 'Bruns, J., Eichen, L., &#38; Gasteiger, H. (2017). Mathematics-related Competence
    of Early Childhood Teachers Visiting a Continuous Professional Development Course:
    An Intervention Study. <i>Mathematics Teacher Education and Development (MTED)</i>,
    <i>19</i>(3), 76–93.'
  bibtex: '@article{Bruns_Eichen_Gasteiger_2017, title={Mathematics-related Competence
    of Early Childhood Teachers Visiting a Continuous Professional Development Course:
    An Intervention Study}, volume={19}, number={3}, journal={Mathematics Teacher
    Education and Development (MTED)}, author={Bruns, Julia and Eichen, Lars and Gasteiger,
    Hedwig}, year={2017}, pages={76–93} }'
  chicago: 'Bruns, Julia, Lars Eichen, and Hedwig Gasteiger. “Mathematics-Related
    Competence of Early Childhood Teachers Visiting a Continuous Professional Development
    Course: An Intervention Study.” <i>Mathematics Teacher Education and Development
    (MTED)</i> 19, no. 3 (2017): 76–93.'
  ieee: 'J. Bruns, L. Eichen, and H. Gasteiger, “Mathematics-related Competence of
    Early Childhood Teachers Visiting a Continuous Professional Development Course:
    An Intervention Study,” <i>Mathematics Teacher Education and Development (MTED)</i>,
    vol. 19, no. 3, pp. 76–93, 2017.'
  mla: 'Bruns, Julia, et al. “Mathematics-Related Competence of Early Childhood Teachers
    Visiting a Continuous Professional Development Course: An Intervention Study.”
    <i>Mathematics Teacher Education and Development (MTED)</i>, vol. 19, no. 3, 2017,
    pp. 76–93.'
  short: J. Bruns, L. Eichen, H. Gasteiger, Mathematics Teacher Education and Development
    (MTED) 19 (2017) 76–93.
date_created: 2023-01-12T15:28:13Z
date_updated: 2023-06-20T19:01:36Z
department:
- _id: '611'
- _id: '97'
extern: '1'
intvolume: '        19'
issue: '3'
keyword:
- Beliefs
- Competency Based Teacher Education
- Control Groups
- Early Childhood Education
- Faculty Development
- Foreign Countries
- Inservice Teacher Education
- Intervention
- Mathematical Aptitude
- Mathematics Skills
- Pedagogical Content Knowledge
- Preschool Teachers
- Pretests Posttests
- Professional Continuing Education
- Statistical Analysis
- Teacher Competency Testing
language:
- iso: eng
page: 76–93
publication: Mathematics Teacher Education and Development (MTED)
publication_status: published
quality_controlled: '1'
status: public
title: 'Mathematics-related Competence of Early Childhood Teachers Visiting a Continuous
  Professional Development Course: An Intervention Study'
type: journal_article
user_id: '49063'
volume: 19
year: '2017'
...
---
_id: '191'
abstract:
- lang: eng
  text: One purpose of requirement refinement is that higher-level requirements have
    to be translated to something usable by developers. Since customer requirements
    are often written in natural language by end users, they lack precision, completeness
    and consistency. Although user stories are often used in the requirement elicitation
    process in order to describe the possibilities how to interact with the software,
    there is always something unspoken. Here, we present techniques how to automatically
    refine vague software descriptions. Thus, we can bridge the gap by first revising
    natural language utterances from higher-level to more detailed customer requirements,
    before functionality matters. We therefore focus on the resolution of semantically
    incomplete user-generated sentences (i.e. non-instantiated arguments of predicates)
    and provide ontology-based gap-filling suggestions how to complete unverbalized
    information in the user’s demand.
author:
- first_name: Michaela
  full_name: Geierhos, Michaela
  id: '42496'
  last_name: Geierhos
  orcid: 0000-0002-8180-5606
- first_name: Frederik Simon
  full_name: Bäumer, Frederik Simon
  id: '38837'
  last_name: Bäumer
citation:
  ama: 'Geierhos M, Bäumer FS. How to Complete Customer Requirements: Using Concept
    Expansion for Requirement Refinement. In: Métais E, Meziane F, Saraee M, Sugumaran
    V, Vadera S, eds. <i>Proceedings of the 21st International Conference on Applications
    of Natural Language to Information Systems (NLDB)</i>. Vol 9612. Lecture Notes
    in Computer Science. Cham, Switzerland: Springer; 2016:37-47. doi:<a href="https://doi.org/10.1007/978-3-319-41754-7_4">10.1007/978-3-319-41754-7_4</a>'
  apa: 'Geierhos, M., &#38; Bäumer, F. S. (2016). How to Complete Customer Requirements:
    Using Concept Expansion for Requirement Refinement. In E. Métais, F. Meziane,
    M. Saraee, V. Sugumaran, &#38; S. Vadera (Eds.), <i>Proceedings of the 21st International
    Conference on Applications of Natural Language to Information Systems (NLDB)</i>
    (Vol. 9612, pp. 37–47). Cham, Switzerland: Springer. <a href="https://doi.org/10.1007/978-3-319-41754-7_4">https://doi.org/10.1007/978-3-319-41754-7_4</a>'
  bibtex: '@inproceedings{Geierhos_Bäumer_2016, place={Cham, Switzerland}, series={Lecture
    Notes in Computer Science}, title={How to Complete Customer Requirements: Using
    Concept Expansion for Requirement Refinement}, volume={9612}, DOI={<a href="https://doi.org/10.1007/978-3-319-41754-7_4">10.1007/978-3-319-41754-7_4</a>},
    booktitle={Proceedings of the 21st International Conference on Applications of
    Natural Language to Information Systems (NLDB)}, publisher={Springer}, author={Geierhos,
    Michaela and Bäumer, Frederik Simon}, editor={Métais, Elisabeth  and Meziane,
    Farid  and Saraee, Mohamad  and Sugumaran, Vijayan  and Vadera, Sunil Editors},
    year={2016}, pages={37–47}, collection={Lecture Notes in Computer Science} }'
  chicago: 'Geierhos, Michaela, and Frederik Simon Bäumer. “How to Complete Customer
    Requirements: Using Concept Expansion for Requirement Refinement.” In <i>Proceedings
    of the 21st International Conference on Applications of Natural Language to Information
    Systems (NLDB)</i>, edited by Elisabeth  Métais, Farid  Meziane, Mohamad  Saraee,
    Vijayan  Sugumaran, and Sunil  Vadera, 9612:37–47. Lecture Notes in Computer Science.
    Cham, Switzerland: Springer, 2016. <a href="https://doi.org/10.1007/978-3-319-41754-7_4">https://doi.org/10.1007/978-3-319-41754-7_4</a>.'
  ieee: 'M. Geierhos and F. S. Bäumer, “How to Complete Customer Requirements: Using
    Concept Expansion for Requirement Refinement,” in <i>Proceedings of the 21st International
    Conference on Applications of Natural Language to Information Systems (NLDB)</i>,
    Salford, UK, 2016, vol. 9612, pp. 37–47.'
  mla: 'Geierhos, Michaela, and Frederik Simon Bäumer. “How to Complete Customer Requirements:
    Using Concept Expansion for Requirement Refinement.” <i>Proceedings of the 21st
    International Conference on Applications of Natural Language to Information Systems
    (NLDB)</i>, edited by Elisabeth  Métais et al., vol. 9612, Springer, 2016, pp.
    37–47, doi:<a href="https://doi.org/10.1007/978-3-319-41754-7_4">10.1007/978-3-319-41754-7_4</a>.'
  short: 'M. Geierhos, F.S. Bäumer, in: E. Métais, F. Meziane, M. Saraee, V. Sugumaran,
    S. Vadera (Eds.), Proceedings of the 21st International Conference on Applications
    of Natural Language to Information Systems (NLDB), Springer, Cham, Switzerland,
    2016, pp. 37–47.'
conference:
  end_date: 2016-06-24
  location: Salford, UK
  name: 21st International Conference on Applications of Natural Language to Information
    Systems (NLDB 2016)
  start_date: 2016-06-22
date_created: 2017-10-17T12:41:29Z
date_updated: 2022-01-06T06:53:58Z
ddc:
- '040'
department:
- _id: '36'
- _id: '1'
- _id: '579'
doi: 10.1007/978-3-319-41754-7_4
editor:
- first_name: 'Elisabeth '
  full_name: 'Métais, Elisabeth '
  last_name: Métais
- first_name: 'Farid '
  full_name: 'Meziane, Farid '
  last_name: Meziane
- first_name: 'Mohamad '
  full_name: 'Saraee, Mohamad '
  last_name: Saraee
- first_name: 'Vijayan '
  full_name: 'Sugumaran, Vijayan '
  last_name: Sugumaran
- first_name: 'Sunil '
  full_name: 'Vadera, Sunil '
  last_name: Vadera
file:
- access_level: closed
  content_type: application/pdf
  creator: florida
  date_created: 2018-03-21T12:29:37Z
  date_updated: 2018-03-21T12:29:37Z
  file_id: '1528'
  file_name: 191-chp_3A10.1007_2F978-3-319-41754-7_4.pdf
  file_size: 1499075
  relation: main_file
  success: 1
file_date_updated: 2018-03-21T12:29:37Z
has_accepted_license: '1'
intvolume: '      9612'
keyword:
- Requirement refinement
- Concept expansion
- Ontology-based instantiation of predicate-argument structure
language:
- iso: eng
page: 37-47
place: Cham, Switzerland
project:
- _id: '1'
  name: SFB 901
- _id: '3'
  name: SFB 901 - Project Area B
- _id: '9'
  name: SFB 901 - Subproject B1
publication: Proceedings of the 21st International Conference on Applications of Natural
  Language to Information Systems (NLDB)
publication_identifier:
  eisbn:
  - 978-3-319-41754-7
  isbn:
  - 978-3-319-41753-0
publication_status: published
publisher: Springer
quality_controlled: '1'
series_title: Lecture Notes in Computer Science
status: public
title: 'How to Complete Customer Requirements: Using Concept Expansion for Requirement
  Refinement'
type: conference
user_id: '477'
volume: 9612
year: '2016'
...
---
_id: '4421'
abstract:
- lang: eng
  text: In Switzerland, every student graduating from grammar school can begin to
    study at a university. This leads to high dropout rates. Although students’ motivation
    is considered a strong predictor of performance, the development of motivation
    during students’ transition from high school to university has rarely been investigated.
    Additionally, little is known about the relation of motivational aspects with
    other influences on study performance. The present longitudinal study addresses
    this research gap and examines the development of economics and management students’
    study motivation. It encompasses four waves of data collected throughout the first
    year, using quantitative online surveys. In total, the sample consists of 820
    students. Data is analysed using latent change modelling. Results indicate that
    students start at a higher level of intrinsic motivation compared to extrinsic
    motivation. The variability of the starting value of the two constructs is also
    differing. The analysis also shows a gradual decline in students’ motivation.
    Above all, the transition from secondary to higher education seems to be a driver
    for this decline.
author:
- first_name: Taiga
  full_name: Brahm, Taiga
  last_name: Brahm
- first_name: Tobias
  full_name: Jenert, Tobias
  last_name: Jenert
- first_name: Dietrich
  full_name: Wagner, Dietrich
  last_name: Wagner
citation:
  ama: 'Brahm T, Jenert T, Wagner D. The crucial first year: a longitudinal study
    of students’ motivational development at a Swiss Business School. <i>Higher Education</i>.
    2016;73(3):459-478. doi:<a href="https://doi.org/10.1007/s10734-016-0095-8">10.1007/s10734-016-0095-8</a>'
  apa: 'Brahm, T., Jenert, T., &#38; Wagner, D. (2016). The crucial first year: a
    longitudinal study of students’ motivational development at a Swiss Business School.
    <i>Higher Education</i>, <i>73</i>(3), 459–478. <a href="https://doi.org/10.1007/s10734-016-0095-8">https://doi.org/10.1007/s10734-016-0095-8</a>'
  bibtex: '@article{Brahm_Jenert_Wagner_2016, title={The crucial first year: a longitudinal
    study of students’ motivational development at a Swiss Business School}, volume={73},
    DOI={<a href="https://doi.org/10.1007/s10734-016-0095-8">10.1007/s10734-016-0095-8</a>},
    number={3}, journal={Higher Education}, publisher={Springer Nature}, author={Brahm,
    Taiga and Jenert, Tobias and Wagner, Dietrich}, year={2016}, pages={459–478} }'
  chicago: 'Brahm, Taiga, Tobias Jenert, and Dietrich Wagner. “The Crucial First Year:
    A Longitudinal Study of Students’ Motivational Development at a Swiss Business
    School.” <i>Higher Education</i> 73, no. 3 (2016): 459–78. <a href="https://doi.org/10.1007/s10734-016-0095-8">https://doi.org/10.1007/s10734-016-0095-8</a>.'
  ieee: 'T. Brahm, T. Jenert, and D. Wagner, “The crucial first year: a longitudinal
    study of students’ motivational development at a Swiss Business School,” <i>Higher
    Education</i>, vol. 73, no. 3, pp. 459–478, 2016.'
  mla: 'Brahm, Taiga, et al. “The Crucial First Year: A Longitudinal Study of Students’
    Motivational Development at a Swiss Business School.” <i>Higher Education</i>,
    vol. 73, no. 3, Springer Nature, 2016, pp. 459–78, doi:<a href="https://doi.org/10.1007/s10734-016-0095-8">10.1007/s10734-016-0095-8</a>.'
  short: T. Brahm, T. Jenert, D. Wagner, Higher Education 73 (2016) 459–478.
date_created: 2018-09-18T08:58:54Z
date_updated: 2022-01-06T07:01:03Z
department:
- _id: '208'
- _id: '282'
doi: 10.1007/s10734-016-0095-8
extern: '1'
intvolume: '        73'
issue: '3'
keyword:
- Transition to higher education
- Motivation
- Longitudinal study
- Socio-cultural factors
- Latent change model
- Switzerland
page: 459-478
publication: Higher Education
publication_identifier:
  issn:
  - 0018-1560
  - 1573-174X
publication_status: published
publisher: Springer Nature
status: public
title: 'The crucial first year: a longitudinal study of students’ motivational development
  at a Swiss Business School'
type: journal_article
user_id: '51057'
volume: 73
year: '2016'
...
---
_id: '4951'
abstract:
- lang: eng
  text: Despite the rapid growth and potential of technology-based services, managers'
    greatest challenges are gaining customer acceptance and increasing usage of these
    new innovative services. In the B2C field, studies of self-service technology
    show that perceived risk is an important factor influencing the use of service
    technology. Though prior research explores different risk types that emerge in
    consumer settings, risk perception in the B2B setting lacks a detailed examination
    of different risk types influencing technology-based service adoption. Data from
    49 qualitative interviews with providers and customers in two different B2B industries
    inform this study. The findings emphasize the importance of functional and financial
    risks in a B2B context and show that business customers' personal and psychological
    fears hinder their use of technology-based services. Results highlight differences
    in risk perception and evaluation between customers and providers.
article_type: original
author:
- first_name: Stefanie
  full_name: Paluch, Stefanie
  last_name: Paluch
- first_name: Nancy
  full_name: Wünderlich, Nancy
  id: '36392'
  last_name: Wünderlich
citation:
  ama: Paluch S, Wünderlich N. Contrasting Risk Perceptions of Technology-Based Service
    Innovations in Inter-Organizational Settings. <i>Journal of business Research</i>.
    2016;69(7):2424--2431.
  apa: Paluch, S., &#38; Wünderlich, N. (2016). Contrasting Risk Perceptions of Technology-Based
    Service Innovations in Inter-Organizational Settings. <i>Journal of Business Research</i>,
    <i>69</i>(7), 2424--2431.
  bibtex: '@article{Paluch_Wünderlich_2016, title={Contrasting Risk Perceptions of
    Technology-Based Service Innovations in Inter-Organizational Settings.}, volume={69},
    number={7}, journal={Journal of business Research}, publisher={Elsevier}, author={Paluch,
    Stefanie and Wünderlich, Nancy}, year={2016}, pages={2424--2431} }'
  chicago: 'Paluch, Stefanie, and Nancy Wünderlich. “Contrasting Risk Perceptions
    of Technology-Based Service Innovations in Inter-Organizational Settings.” <i>Journal
    of Business Research</i> 69, no. 7 (2016): 2424--2431.'
  ieee: S. Paluch and N. Wünderlich, “Contrasting Risk Perceptions of Technology-Based
    Service Innovations in Inter-Organizational Settings.,” <i>Journal of business
    Research</i>, vol. 69, no. 7, pp. 2424--2431, 2016.
  mla: Paluch, Stefanie, and Nancy Wünderlich. “Contrasting Risk Perceptions of Technology-Based
    Service Innovations in Inter-Organizational Settings.” <i>Journal of Business
    Research</i>, vol. 69, no. 7, Elsevier, 2016, pp. 2424--2431.
  short: S. Paluch, N. Wünderlich, Journal of Business Research 69 (2016) 2424--2431.
date_created: 2018-10-26T10:20:07Z
date_updated: 2022-01-06T07:01:30Z
department:
- _id: '178'
- _id: '181'
intvolume: '        69'
issue: '7'
keyword:
- Risk perception
- Technology-based service innovations
- Business-to-business context
- Interview study
- Risk categories
- Smart service
language:
- iso: eng
page: 2424--2431
publication: Journal of business Research
publication_status: published
publisher: Elsevier
status: public
title: Contrasting Risk Perceptions of Technology-Based Service Innovations in Inter-Organizational
  Settings.
type: journal_article
user_id: '37741'
volume: 69
year: '2016'
...
---
_id: '9963'
abstract:
- lang: eng
  text: Tire-wheel assembly is the only connection between road and vehicle. Contacting
    directly with road within postcard size of contact area, it is mounted and guided
    by the suspension system. Therefore kinematics and compliances of suspension system
    greatly influence the frictional coupling of tire tread elements and road surface
    asperities by affecting pressure and sliding velocity distribution in the contact
    zone. This study emphasizes the development of a numerical methodology for frictional
    rolling contact analysis with focus on interaction of suspension system dynamics
    and tire-road contact using ADAMS. For this purpose a comprehensive flexible multibody
    system of the multi-link rear suspension is established, where both flexible and
    rigid bodies are modeled to allow large displacements with included elastic effects.
    To meet accuracy requirements for the high frequency applications, such as road
    excitations, the amplitude- and frequency-dependency of rubber-metal bushings
    is included. Furthermore the proposed flexible viscoelastic suspension model is
    enhanced by a Flexible Ring Tire Model (FTire), which describes a 3D tire dynamic
    response and covers any road excitations by tread submodel connected to road surface
    model. Concerning the verification and validation procedure numerous experiments
    are carried out to confirm the validity and the accuracy of both the developed
    submodels and the entire model. The devised approach makes it possible to investigate
    the influence of suspension system design on dynamical rolling contact and to
    evaluate tire tread wear. Therefore it can be a useful tool to predict frictional
    power distribution within the contact area under more realistic conditions.
author:
- first_name: Sergej
  full_name: Kohl, Sergej
  last_name: Kohl
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Sebastian
  full_name: Schulze, Sebastian
  last_name: Schulze
citation:
  ama: 'Kohl S, Sextro W, Schulze S. Aspects of Flexible Viscoelastic Suspension Modeling
    for Frictional Rolling Contact Analysis using ADAMS. In: <i>The 2nd International
    Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
    Malaysia, 2016.</i> Cyberjaya, Malaysia, 2016; 2016:1-12.'
  apa: Kohl, S., Sextro, W., &#38; Schulze, S. (2016). Aspects of Flexible Viscoelastic
    Suspension Modeling for Frictional Rolling Contact Analysis using ADAMS. In <i>The
    2nd International Conference on Automotive Innovation and Green Energy Vehicle
    (AiGEV 2016), Cyberjaya, Malaysia, 2016.</i> (pp. 1–12). Cyberjaya, Malaysia,
    2016.
  bibtex: '@inproceedings{Kohl_Sextro_Schulze_2016, place={Cyberjaya, Malaysia, 2016},
    title={Aspects of Flexible Viscoelastic Suspension Modeling for Frictional Rolling
    Contact Analysis using ADAMS}, booktitle={The 2nd International Conference on
    Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia,
    2016.}, author={Kohl, Sergej and Sextro, Walter and Schulze, Sebastian}, year={2016},
    pages={1–12} }'
  chicago: Kohl, Sergej, Walter Sextro, and Sebastian Schulze. “Aspects of Flexible
    Viscoelastic Suspension Modeling for Frictional Rolling Contact Analysis Using
    ADAMS.” In <i>The 2nd International Conference on Automotive Innovation and Green
    Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia, 2016.</i>, 1–12. Cyberjaya,
    Malaysia, 2016, 2016.
  ieee: S. Kohl, W. Sextro, and S. Schulze, “Aspects of Flexible Viscoelastic Suspension
    Modeling for Frictional Rolling Contact Analysis using ADAMS,” in <i>The 2nd International
    Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
    Malaysia, 2016.</i>, 2016, pp. 1–12.
  mla: Kohl, Sergej, et al. “Aspects of Flexible Viscoelastic Suspension Modeling
    for Frictional Rolling Contact Analysis Using ADAMS.” <i>The 2nd International
    Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
    Malaysia, 2016.</i>, 2016, pp. 1–12.
  short: 'S. Kohl, W. Sextro, S. Schulze, in: The 2nd International Conference on
    Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia,
    2016., Cyberjaya, Malaysia, 2016, 2016, pp. 1–12.'
date_created: 2019-05-27T09:13:14Z
date_updated: 2019-05-27T09:13:54Z
department:
- _id: '151'
keyword:
- Kinematics and compliances
- flexible viscoelastic suspension model
- frictional rolling contact analysis
- frictional power distribution.
language:
- iso: eng
page: 1-12
place: Cyberjaya, Malaysia, 2016
publication: The 2nd International Conference on Automotive Innovation and Green Energy
  Vehicle (AiGEV 2016), Cyberjaya, Malaysia, 2016.
status: public
title: Aspects of Flexible Viscoelastic Suspension Modeling for Frictional Rolling
  Contact Analysis using ADAMS
type: conference
user_id: '55222'
year: '2016'
...
---
_id: '9967'
abstract:
- lang: eng
  text: Multibody models of mechatronic systems are usually interdisciplinary and
    are continuously gaining complexity, due to a growing demand for comprehensive
    models of systems including effects of electro mechanics, elastic bodies, contacts
    and friction. To be capable of simulating large models with subassemblies and
    contact between bodies, reduction techniques are required, which need certain
    experience in the choice of parameters. This publication discusses different possibilities
    for the modal description of structures in flexible multibody models with application
    to an Adaptive Frontlighting System in ADAMS. It will be shown that mode count,
    assembling of structures before and after modal reduction and influence of damping
    parameters of particular structures and subassemblies affect the behavior of the
    entire system. A common reduction technique for flexible structures in multibody
    models is the component mode synthesis, which uses a certain number of modes for
    description of the modal behavior of a structure. The influence of the mode count
    will be shown by means of different modal descriptions of one structure that contributes
    to a comprehensive model. Another study will prove that modal data of subassemblies
    and assemblies of modal reduced single structures lead to different models. The
    definition of damping parameters depends on the number of structures that have
    been added to an assembly before modal reduction and on the number of modal reduced
    structures. The comparison of subassemblies and the entire model to experimental
    data will highlight the accuracy, computational overhead, complexity of models
    and modeling efficiency of the comprehensive model for the frontlighting system.
author:
- first_name: Sebastian
  full_name: Schulze, Sebastian
  last_name: Schulze
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Sergej
  full_name: Kohl, Sergej
  last_name: Kohl
citation:
  ama: 'Schulze S, Sextro W, Kohl S. Using Adequate Reduced Models for Flexible Multibody
    Systems of Automotive Mechatronic Systems. In: <i>2nd International Conference
    on Automotive Innovation and Green Energy Vehicle (AiGEV) Malaysia 2016</i>. ;
    2016:1-11.'
  apa: Schulze, S., Sextro, W., &#38; Kohl, S. (2016). Using Adequate Reduced Models
    for Flexible Multibody Systems of Automotive Mechatronic Systems. In <i>2nd International
    Conference on Automotive Innovation and Green Energy Vehicle (AiGEV) Malaysia
    2016</i> (pp. 1–11).
  bibtex: '@inproceedings{Schulze_Sextro_Kohl_2016, title={Using Adequate Reduced
    Models for Flexible Multibody Systems of Automotive Mechatronic Systems}, booktitle={2nd
    International Conference on Automotive Innovation and Green Energy Vehicle (AiGEV)
    Malaysia 2016}, author={Schulze, Sebastian and Sextro, Walter and Kohl, Sergej},
    year={2016}, pages={1–11} }'
  chicago: Schulze, Sebastian, Walter Sextro, and Sergej Kohl. “Using Adequate Reduced
    Models for Flexible Multibody Systems of Automotive Mechatronic Systems.” In <i>2nd
    International Conference on Automotive Innovation and Green Energy Vehicle (AiGEV)
    Malaysia 2016</i>, 1–11, 2016.
  ieee: S. Schulze, W. Sextro, and S. Kohl, “Using Adequate Reduced Models for Flexible
    Multibody Systems of Automotive Mechatronic Systems,” in <i>2nd International
    Conference on Automotive Innovation and Green Energy Vehicle (AiGEV) Malaysia
    2016</i>, 2016, pp. 1–11.
  mla: Schulze, Sebastian, et al. “Using Adequate Reduced Models for Flexible Multibody
    Systems of Automotive Mechatronic Systems.” <i>2nd International Conference on
    Automotive Innovation and Green Energy Vehicle (AiGEV) Malaysia 2016</i>, 2016,
    pp. 1–11.
  short: 'S. Schulze, W. Sextro, S. Kohl, in: 2nd International Conference on Automotive
    Innovation and Green Energy Vehicle (AiGEV) Malaysia 2016, 2016, pp. 1–11.'
date_created: 2019-05-27T09:19:20Z
date_updated: 2019-05-27T09:19:49Z
department:
- _id: '151'
keyword:
- model reduction
- modal description
- flexible multibody systems
language:
- iso: eng
page: 1-11
publication: 2nd International Conference on Automotive Innovation and Green Energy
  Vehicle (AiGEV) Malaysia 2016
status: public
title: Using Adequate Reduced Models for Flexible Multibody Systems of Automotive
  Mechatronic Systems
type: conference
user_id: '55222'
year: '2016'
...
---
_id: '5588'
abstract:
- lang: eng
  text: The protection of information technology (IT) has become and is predicted
    to remain a key economic challenge for organizations. While research on IT security
    investment is fast growing, it lacks a theoretical basis for structuring research,
    explaining economic-technological phenomena and guide future research. We address
    this shortcoming by suggesting a new theoretical model emerging from a multi-theoretical
    perspective adopt-ing the Resource-Based View and the Organizational Learning
    Theory. The joint appli-cation of these theories allows to conceptualize in one
    theoretical model the organiza-tional learning effects that occur when the protection
    of organizational resources through IT security countermeasures develops over
    time. We use this model of IT security invest-ments to synthesize findings of
    a large body of literature and to derive research gaps. We also discuss managerial
    implications of (closing) these gaps by providing practical ex-amples.
author:
- first_name: Eva
  full_name: Weishäupl, Eva
  last_name: Weishäupl
- first_name: Emrah
  full_name: Yasasin, Emrah
  last_name: Yasasin
- first_name: Guido
  full_name: Schryen, Guido
  id: '72850'
  last_name: Schryen
citation:
  ama: 'Weishäupl E, Yasasin E, Schryen G. A Multi-Theoretical Literature Review on
    Information Security Investments using the Resource-Based View and the Organizational
    Learning Theory. In: <i>International Conference on Information Systems</i>. ;
    2015.'
  apa: Weishäupl, E., Yasasin, E., &#38; Schryen, G. (2015). A Multi-Theoretical Literature
    Review on Information Security Investments using the Resource-Based View and the
    Organizational Learning Theory. In <i>International Conference on Information
    Systems</i>.
  bibtex: '@inproceedings{Weishäupl_Yasasin_Schryen_2015, title={A Multi-Theoretical
    Literature Review on Information Security Investments using the Resource-Based
    View and the Organizational Learning Theory}, booktitle={International Conference
    on Information Systems}, author={Weishäupl, Eva and Yasasin, Emrah and Schryen,
    Guido}, year={2015} }'
  chicago: Weishäupl, Eva, Emrah Yasasin, and Guido Schryen. “A Multi-Theoretical
    Literature Review on Information Security Investments Using the Resource-Based
    View and the Organizational Learning Theory.” In <i>International Conference on
    Information Systems</i>, 2015.
  ieee: E. Weishäupl, E. Yasasin, and G. Schryen, “A Multi-Theoretical Literature
    Review on Information Security Investments using the Resource-Based View and the
    Organizational Learning Theory,” in <i>International Conference on Information
    Systems</i>, 2015.
  mla: Weishäupl, Eva, et al. “A Multi-Theoretical Literature Review on Information
    Security Investments Using the Resource-Based View and the Organizational Learning
    Theory.” <i>International Conference on Information Systems</i>, 2015.
  short: 'E. Weishäupl, E. Yasasin, G. Schryen, in: International Conference on Information
    Systems, 2015.'
date_created: 2018-11-14T11:25:38Z
date_updated: 2022-01-06T07:02:03Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
  content_type: application/pdf
  creator: hsiemes
  date_created: 2018-12-07T11:45:31Z
  date_updated: 2018-12-13T15:09:32Z
  file_id: '6038'
  file_name: ICIS PROCEEDINGS PAPER - Security Investments.pdf
  file_size: 958019
  relation: main_file
file_date_updated: 2018-12-13T15:09:32Z
has_accepted_license: '1'
keyword:
- Information Security
- Investment
- Literature review
- Resource-based View
- Organi-zational Learning Theory
- Multi-theoretical Perspective
language:
- iso: eng
oa: '1'
publication: International Conference on Information Systems
status: public
title: A Multi-Theoretical Literature Review on Information Security Investments using
  the Resource-Based View and the Organizational Learning Theory
type: conference
user_id: '61579'
year: '2015'
...
---
_id: '48838'
abstract:
- lang: eng
  text: 'The majority of algorithms can be controlled or adjusted by parameters. Their
    values can substantially affect the algorithms’ performance. Since the manual
    exploration of the parameter space is tedious – even for few parameters – several
    automatic procedures for parameter tuning have been proposed. Recent approaches
    also take into account some characteristic properties of the problem instances,
    frequently termed instance features. Our contribution is the proposal of a novel
    concept for feature-based algorithm parameter tuning, which applies an approximating
    surrogate model for learning the continuous feature-parameter mapping. To accomplish
    this, we learn a joint model of the algorithm performance based on both the algorithm
    parameters and the instance features. The required data is gathered using a recently
    proposed acquisition function for model refinement in surrogate-based optimization:
    the profile expected improvement. This function provides an avenue for maximizing
    the information required for the feature-parameter mapping, i.e., the mapping
    from instance features to the corresponding optimal algorithm parameters. The
    approach is validated by applying the tuner to exemplary evolutionary algorithms
    and problems, for which theoretically grounded or heuristically determined feature-parameter
    mappings are available.'
author:
- first_name: Jakob
  full_name: Bossek, Jakob
  id: '102979'
  last_name: Bossek
  orcid: 0000-0002-4121-4668
- first_name: Bernd
  full_name: Bischl, Bernd
  last_name: Bischl
- first_name: Tobias
  full_name: Wagner, Tobias
  last_name: Wagner
- first_name: Günter
  full_name: Rudolph, Günter
  last_name: Rudolph
citation:
  ama: 'Bossek J, Bischl B, Wagner T, Rudolph G. Learning Feature-Parameter Mappings
    for Parameter Tuning via the Profile Expected Improvement. In: <i>Proceedings
    of the Genetic and Evolutionary Computation Conference</i>. GECCO ’15. Association
    for Computing Machinery; 2015:1319–1326. doi:<a href="https://doi.org/10.1145/2739480.2754673">10.1145/2739480.2754673</a>'
  apa: Bossek, J., Bischl, B., Wagner, T., &#38; Rudolph, G. (2015). Learning Feature-Parameter
    Mappings for Parameter Tuning via the Profile Expected Improvement. <i>Proceedings
    of the Genetic and Evolutionary Computation Conference</i>, 1319–1326. <a href="https://doi.org/10.1145/2739480.2754673">https://doi.org/10.1145/2739480.2754673</a>
  bibtex: '@inproceedings{Bossek_Bischl_Wagner_Rudolph_2015, place={New York, NY,
    USA}, series={GECCO ’15}, title={Learning Feature-Parameter Mappings for Parameter
    Tuning via the Profile Expected Improvement}, DOI={<a href="https://doi.org/10.1145/2739480.2754673">10.1145/2739480.2754673</a>},
    booktitle={Proceedings of the Genetic and Evolutionary Computation Conference},
    publisher={Association for Computing Machinery}, author={Bossek, Jakob and Bischl,
    Bernd and Wagner, Tobias and Rudolph, Günter}, year={2015}, pages={1319–1326},
    collection={GECCO ’15} }'
  chicago: 'Bossek, Jakob, Bernd Bischl, Tobias Wagner, and Günter Rudolph. “Learning
    Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.”
    In <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>,
    1319–1326. GECCO ’15. New York, NY, USA: Association for Computing Machinery,
    2015. <a href="https://doi.org/10.1145/2739480.2754673">https://doi.org/10.1145/2739480.2754673</a>.'
  ieee: 'J. Bossek, B. Bischl, T. Wagner, and G. Rudolph, “Learning Feature-Parameter
    Mappings for Parameter Tuning via the Profile Expected Improvement,” in <i>Proceedings
    of the Genetic and Evolutionary Computation Conference</i>, 2015, pp. 1319–1326,
    doi: <a href="https://doi.org/10.1145/2739480.2754673">10.1145/2739480.2754673</a>.'
  mla: Bossek, Jakob, et al. “Learning Feature-Parameter Mappings for Parameter Tuning
    via the Profile Expected Improvement.” <i>Proceedings of the Genetic and Evolutionary
    Computation Conference</i>, Association for Computing Machinery, 2015, pp. 1319–1326,
    doi:<a href="https://doi.org/10.1145/2739480.2754673">10.1145/2739480.2754673</a>.
  short: 'J. Bossek, B. Bischl, T. Wagner, G. Rudolph, in: Proceedings of the Genetic
    and Evolutionary Computation Conference, Association for Computing Machinery,
    New York, NY, USA, 2015, pp. 1319–1326.'
date_created: 2023-11-14T15:58:51Z
date_updated: 2023-12-13T10:40:30Z
department:
- _id: '819'
doi: 10.1145/2739480.2754673
extern: '1'
keyword:
- evolutionary algorithms
- model-based optimization
- parameter tuning
language:
- iso: eng
page: 1319–1326
place: New York, NY, USA
publication: Proceedings of the Genetic and Evolutionary Computation Conference
publication_identifier:
  isbn:
  - 978-1-4503-3472-3
publication_status: published
publisher: Association for Computing Machinery
series_title: GECCO ’15
status: public
title: Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected
  Improvement
type: conference
user_id: '102979'
year: '2015'
...
---
_id: '1134'
abstract:
- lang: eng
  text: This paper focuses on the first step in combining prescriptive analytics with
    scenario techniques in order to provide strategicdevelopment after the useof InSciTe,
    a data prescriptive analytics application. InSciTe supports the improvement of
    researchers‘ individual performance by recommending new research directions. Standardized
    influential factors are presented as a foundation for automated scenario modelling
    such as the prototypical report generation function of InSciTe. Additionally,
    a use-case is shown which validatesthe potential of the standardized influential
    factors for raw scenario development.
author:
- first_name: Jens
  full_name: Weber, Jens
  last_name: Weber
- first_name: Cho
  full_name: Minhee, Cho
  last_name: Minhee
- first_name: Mikyoung
  full_name: Lee, Mikyoung
  last_name: Lee
- first_name: Sa-kwang
  full_name: Song, Sa-kwang
  last_name: Song
- first_name: Michaela
  full_name: Geierhos, Michaela
  id: '42496'
  last_name: Geierhos
  orcid: 0000-0002-8180-5606
- first_name: Hanmin
  full_name: Jung, Hanmin
  last_name: Jung
citation:
  ama: 'Weber J, Minhee C, Lee M, Song S, Geierhos M, Jung H. System Thinking: Crafting
    Scenarios for Prescriptive Analytics. In: Jung H, Mandl T, Womsen-Hacker C, Xu
    S, eds. <i>Proceedings of the First International Workshop on Patent Mining and
    Its Applications (IPaMin 2014) Co-Located with Konvens 2014</i>. Vol 1292. CEUR
    Workshop Proceedings. CEUR-WS.org; 2014.'
  apa: 'Weber, J., Minhee, C., Lee, M., Song, S., Geierhos, M., &#38; Jung, H. (2014).
    System Thinking: Crafting Scenarios for Prescriptive Analytics. In H. Jung, T.
    Mandl, C. Womsen-Hacker, &#38; S. Xu (Eds.), <i>Proceedings of the First International
    Workshop on Patent Mining and Its Applications (IPaMin 2014) co-located with Konvens
    2014</i> (Vol. 1292). Hildesheim, Germany: CEUR-WS.org.'
  bibtex: '@inproceedings{Weber_Minhee_Lee_Song_Geierhos_Jung_2014, series={CEUR Workshop
    Proceedings}, title={System Thinking: Crafting Scenarios for Prescriptive Analytics},
    volume={1292}, booktitle={Proceedings of the First International Workshop on Patent
    Mining and Its Applications (IPaMin 2014) co-located with Konvens 2014}, publisher={CEUR-WS.org},
    author={Weber, Jens and Minhee, Cho and Lee, Mikyoung and Song, Sa-kwang and Geierhos,
    Michaela and Jung, Hanmin}, editor={Jung, Hanmin and Mandl, Thomas and Womsen-Hacker,
    Christa and Xu, ShuoEditors}, year={2014}, collection={CEUR Workshop Proceedings}
    }'
  chicago: 'Weber, Jens, Cho Minhee, Mikyoung Lee, Sa-kwang Song, Michaela Geierhos,
    and Hanmin Jung. “System Thinking: Crafting Scenarios for Prescriptive Analytics.”
    In <i>Proceedings of the First International Workshop on Patent Mining and Its
    Applications (IPaMin 2014) Co-Located with Konvens 2014</i>, edited by Hanmin
    Jung, Thomas Mandl, Christa Womsen-Hacker, and Shuo Xu, Vol. 1292. CEUR Workshop
    Proceedings. CEUR-WS.org, 2014.'
  ieee: 'J. Weber, C. Minhee, M. Lee, S. Song, M. Geierhos, and H. Jung, “System Thinking:
    Crafting Scenarios for Prescriptive Analytics,” in <i>Proceedings of the First
    International Workshop on Patent Mining and Its Applications (IPaMin 2014) co-located
    with Konvens 2014</i>, Hildesheim, Germany, 2014, vol. 1292.'
  mla: 'Weber, Jens, et al. “System Thinking: Crafting Scenarios for Prescriptive
    Analytics.” <i>Proceedings of the First International Workshop on Patent Mining
    and Its Applications (IPaMin 2014) Co-Located with Konvens 2014</i>, edited by
    Hanmin Jung et al., vol. 1292, CEUR-WS.org, 2014.'
  short: 'J. Weber, C. Minhee, M. Lee, S. Song, M. Geierhos, H. Jung, in: H. Jung,
    T. Mandl, C. Womsen-Hacker, S. Xu (Eds.), Proceedings of the First International
    Workshop on Patent Mining and Its Applications (IPaMin 2014) Co-Located with Konvens
    2014, CEUR-WS.org, 2014.'
conference:
  end_date: 2014-10-07
  location: Hildesheim, Germany
  name: First International Workshop on Patent Mining and Its Applications (IPaMin
    2014)
  start_date: 2014-10-06
date_created: 2018-01-30T15:27:08Z
date_updated: 2022-01-06T06:50:59Z
department:
- _id: '36'
- _id: '1'
- _id: '579'
editor:
- first_name: Hanmin
  full_name: Jung, Hanmin
  last_name: Jung
- first_name: Thomas
  full_name: Mandl, Thomas
  last_name: Mandl
- first_name: Christa
  full_name: Womsen-Hacker, Christa
  last_name: Womsen-Hacker
- first_name: Shuo
  full_name: Xu, Shuo
  last_name: Xu
intvolume: '      1292'
keyword:
- Standardized Influential Factors
- Prescriptive Analytics
- Role Model Group
- Scenario Technique
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://ceur-ws.org/Vol-1292/ipamin2014_paper1.pdf
oa: '1'
publication: Proceedings of the First International Workshop on Patent Mining and
  Its Applications (IPaMin 2014) co-located with Konvens 2014
publication_identifier:
  issn:
  - '16130073'
publication_status: published
publisher: CEUR-WS.org
quality_controlled: '1'
series_title: CEUR Workshop Proceedings
status: public
title: 'System Thinking: Crafting Scenarios for Prescriptive Analytics'
type: conference
user_id: '42496'
volume: 1292
year: '2014'
...
---
_id: '4474'
abstract:
- lang: eng
  text: The transition from school to university can be overwhelming for some students.
    While students' motivation is considered a strong predictor of performance, the
    development of motivation during students' transition from high school to university
    has rarely been investigated. Additionally, little is known about the relation
    of motivational aspects with other influences on study performance. The present
    mixed methods study addresses this research gap and examines the development of
    economics students' study motivation. The longitudinal mixed-method study included
    three waves of data collected using quantitative surveys and a series of five
    interviews conducted with 14 first-year students over eight months. Regarding
    students' development over time, the quantitative analysis showed a gradual decline
    in students' motivation. However, in the interviews, certain events during the
    first year were identified as critical incidents demotivating students. These
    insights into the development of students' motivation at a business school show
    that concrete incidents influence students' motivational development; thus, they
    could be transformed by structural changes.
author:
- first_name: Taiga
  full_name: Brahm, Taiga
  last_name: Brahm
- first_name: Tobias
  full_name: Jenert, Tobias
  id: '71994'
  last_name: Jenert
  orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
  ama: 'Brahm T, Jenert T. The crucial first year: The development of students’ motivation
    at a Business School-a Mixed Methods Study. In: ; 2014.'
  apa: 'Brahm, T., &#38; Jenert, T. (2014). The crucial first year: The development
    of students’ motivation at a Business School-a Mixed Methods Study. Presented
    at the SIG4 Higher Education &#38; SIG17 Qualitative and Quantitative Approaches
    to Learning and Instruction Earli SIG Conference 2014, Leuven.'
  bibtex: '@inproceedings{Brahm_Jenert_2014, title={The crucial first year: The development
    of students’ motivation at a Business School-a Mixed Methods Study}, author={Brahm,
    Taiga and Jenert, Tobias}, year={2014} }'
  chicago: 'Brahm, Taiga, and Tobias Jenert. “The Crucial First Year: The Development
    of Students’ Motivation at a Business School-a Mixed Methods Study,” 2014.'
  ieee: 'T. Brahm and T. Jenert, “The crucial first year: The development of students’
    motivation at a Business School-a Mixed Methods Study,” presented at the SIG4
    Higher Education &#38; SIG17 Qualitative and Quantitative Approaches to Learning
    and Instruction Earli SIG Conference 2014, Leuven, 2014.'
  mla: 'Brahm, Taiga, and Tobias Jenert. <i>The Crucial First Year: The Development
    of Students’ Motivation at a Business School-a Mixed Methods Study</i>. 2014.'
  short: 'T. Brahm, T. Jenert, in: 2014.'
conference:
  end_date: 2014-08-22
  location: Leuven
  name: SIG4 Higher Education & SIG17 Qualitative and Quantitative Approaches to Learning
    and Instruction Earli SIG Conference 2014
  start_date: 2014-08-20
date_created: 2018-09-19T08:06:46Z
date_updated: 2022-01-06T07:01:06Z
department:
- _id: '208'
- _id: '282'
extern: '1'
keyword:
- motivation
- business school
- higher education
- latent growth curve model
- longitudinal study
- mixed methods
- interview
- students
status: public
title: 'The crucial first year: The development of students'' motivation at a Business
  School-a Mixed Methods Study'
type: conference
user_id: '51057'
year: '2014'
...
---
_id: '4476'
abstract:
- lang: ger
  text: 'Auseinandersetzungen über Forschungsmethodologien haben in den Bildungswissenschaften
    lange Tradition. Sie werden häufig unversöhnlich und mit Profilierung der Gegensätze
    geführt. Für uns hängt die Sinnhaftigkeit einer Forschungskonzeption von der Problemstellung
    und dem Erkenntnisinteresse ab. Dies gilt auch für Design-Based Research (DBR).
    Dieser Ansatz entstand als Reaktion auf die Kritik an mangelnder praktischer Anwendung
    von Befunden aus der empirisch-analytischen Lehr-Lernforschung. Als Ergebnis werden
    Theorien angestrebt, die für die Praxis einen Nutzen bieten und zugleich über
    die Anwendung in einer singulären Situation hinausgehen. Wir wollen folgenden
    Fragen nachgehen: Wo liegen die Gemeinsamkeiten, wo die Spezifika von DBR gegenüber
    bestehenden Methodologien? Wie wird der Generalisierungsanspruch von Theorien
    innerhalb von DBR verstanden und umgesetzt? Für welche Erkenntnisinteressen eignet
    sich DBR? Welche Methoden sind für DBR sinnvoll und können wie angewendet werden?'
author:
- first_name: Taiga
  full_name: Brahm, Taiga
  last_name: Brahm
- first_name: Tobias
  full_name: Jenert, Tobias
  id: '71994'
  last_name: Jenert
  orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
  ama: 'Brahm T, Jenert T. Wie kann über DBR die wissenschaftliche und praktische
    Relevanz der Forschung gesichert werden? In: Humboldt-Universität; 2014.'
  apa: 'Brahm, T., &#38; Jenert, T. (2014). Wie kann über DBR die wissenschaftliche
    und praktische Relevanz der Forschung gesichert werden? Presented at the 24. Kongress
    der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE), Berlin: Humboldt-Universität.'
  bibtex: '@inproceedings{Brahm_Jenert_2014, title={Wie kann über DBR die wissenschaftliche
    und praktische Relevanz der Forschung gesichert werden?}, publisher={Humboldt-Universität},
    author={Brahm, Taiga and Jenert, Tobias}, year={2014} }'
  chicago: Brahm, Taiga, and Tobias Jenert. “Wie Kann Über DBR Die Wissenschaftliche
    Und Praktische Relevanz Der Forschung Gesichert Werden?” Humboldt-Universität,
    2014.
  ieee: T. Brahm and T. Jenert, “Wie kann über DBR die wissenschaftliche und praktische
    Relevanz der Forschung gesichert werden?,” presented at the 24. Kongress der Deutschen
    Gesellschaft für Erziehungswissenschaft (DGfE), Berlin, 2014.
  mla: Brahm, Taiga, and Tobias Jenert. <i>Wie Kann Über DBR Die Wissenschaftliche
    Und Praktische Relevanz Der Forschung Gesichert Werden?</i> Humboldt-Universität,
    2014.
  short: 'T. Brahm, T. Jenert, in: Humboldt-Universität, 2014.'
conference:
  end_date: 2014-03-12
  location: Berlin
  name: 24. Kongress der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE)
  start_date: 2014-03-09
date_created: 2018-09-19T08:14:35Z
date_updated: 2022-01-06T07:01:06Z
department:
- _id: '208'
- _id: '282'
extern: '1'
keyword:
- design-based research
- gestatlungsbasierte Forschung
- Erziehungswissenschaft
- Design
- Mixed Methods
publisher: Humboldt-Universität
status: public
title: Wie kann über DBR die wissenschaftliche und praktische Relevanz der Forschung
  gesichert werden?
type: conference
user_id: '51057'
year: '2014'
...
---
_id: '9868'
abstract:
- lang: eng
  text: In order to increase mechanical strength, heat dissipation and ampacity and
    to decrease failure through fatigue fracture, wedge copper wire bonding is being
    introduced as a standard interconnection method for mass production. To achieve
    the same process stability when using copper wire instead of aluminum wire a profound
    understanding of the bonding process is needed. Due to the higher hardness of
    copper compared to aluminum wire it is more difficult to approach the surfaces
    of wire and substrate to a level where van der Waals forces are able to arise
    between atoms. Also, enough friction energy referred to the total contact area
    has to be generated to activate the surfaces. Therefore, a friction model is used
    to simulate the joining process. This model calculates the resulting energy of
    partial areas in the contact surface and provides information about the adhesion
    process of each area. The focus here is on the arising of micro joints in the
    contact area depending on the location in the contact and time. To validate the
    model, different touchdown forces are used to vary the initial contact areas of
    wire and substrate. Additionally, a piezoelectric tri-axial force sensor is built
    up to identify the known phases of pre-deforming, cleaning, adhering and diffusing
    for the real bonding process to map with the model. Test substrates as DBC and
    copper plate are used to show the different formations of a wedge bond connection
    due to hardness and reaction propensity. The experiments were done by using 500
    $\mu$m copper wire and a standard V-groove tool.
author:
- first_name: Simon
  full_name: Althoff, Simon
  last_name: Althoff
- first_name: Jan
  full_name: Neuhaus, Jan
  last_name: Neuhaus
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Althoff S, Neuhaus J, Hemsel T, Sextro W. Improving the bond quality of copper
    wire bonds using a friction model approach. In: <i>Electronic Components and Technology
    Conference (ECTC), 2014 IEEE 64th</i>. ; 2014:1549-1555. doi:<a href="https://doi.org/10.1109/ECTC.2014.6897500">10.1109/ECTC.2014.6897500</a>'
  apa: Althoff, S., Neuhaus, J., Hemsel, T., &#38; Sextro, W. (2014). Improving the
    bond quality of copper wire bonds using a friction model approach. In <i>Electronic
    Components and Technology Conference (ECTC), 2014 IEEE 64th</i> (pp. 1549–1555).
    <a href="https://doi.org/10.1109/ECTC.2014.6897500">https://doi.org/10.1109/ECTC.2014.6897500</a>
  bibtex: '@inproceedings{Althoff_Neuhaus_Hemsel_Sextro_2014, title={Improving the
    bond quality of copper wire bonds using a friction model approach}, DOI={<a href="https://doi.org/10.1109/ECTC.2014.6897500">10.1109/ECTC.2014.6897500</a>},
    booktitle={Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th},
    author={Althoff, Simon and Neuhaus, Jan and Hemsel, Tobias and Sextro, Walter},
    year={2014}, pages={1549–1555} }'
  chicago: Althoff, Simon, Jan Neuhaus, Tobias Hemsel, and Walter Sextro. “Improving
    the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” In <i>Electronic
    Components and Technology Conference (ECTC), 2014 IEEE 64th</i>, 1549–55, 2014.
    <a href="https://doi.org/10.1109/ECTC.2014.6897500">https://doi.org/10.1109/ECTC.2014.6897500</a>.
  ieee: S. Althoff, J. Neuhaus, T. Hemsel, and W. Sextro, “Improving the bond quality
    of copper wire bonds using a friction model approach,” in <i>Electronic Components
    and Technology Conference (ECTC), 2014 IEEE 64th</i>, 2014, pp. 1549–1555.
  mla: Althoff, Simon, et al. “Improving the Bond Quality of Copper Wire Bonds Using
    a Friction Model Approach.” <i>Electronic Components and Technology Conference
    (ECTC), 2014 IEEE 64th</i>, 2014, pp. 1549–55, doi:<a href="https://doi.org/10.1109/ECTC.2014.6897500">10.1109/ECTC.2014.6897500</a>.
  short: 'S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components
    and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.'
date_created: 2019-05-20T12:11:44Z
date_updated: 2019-09-16T10:57:58Z
department:
- _id: '151'
doi: 10.1109/ECTC.2014.6897500
keyword:
- adhesion
- circuit reliability
- deformation
- diffusion
- fatigue cracks
- friction
- interconnections
- lead bonding
- van der Waals forces
- Cu
- adhering process
- adhesion process
- ampacity improvement
- bond quality improvement
- cleaning process
- diffusing process
- fatigue fracture failure
- friction energy
- friction model
- heat dissipation
- mechanical strength
- piezoelectric triaxial force sensor
- predeforming process
- size 500 mum
- total contact area
- van der Waals forces
- wedge copper wire bonding
- Bonding
- Copper
- Finite element analysis
- Force
- Friction
- Substrates
- Wires
language:
- iso: eng
page: 1549-1555
publication: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th
quality_controlled: '1'
status: public
title: Improving the bond quality of copper wire bonds using a friction model approach
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9879'
abstract:
- lang: eng
  text: Application of prognostics and health management (PHM) in the field of Proton
    Exchange Membrane (PEM) fuel cells is emerging as an important tool in increasing
    the reliability and availability of these systems. Though a lot of work is currently
    being conducted to develop PHM systems for fuel cells, various challenges have
    been encountered including the self-healing effect after characterization as well
    as accelerated degradation due to dynamic loading, all which make RUL predictions
    a difficult task. In this study, a prognostic approach based on adaptive particle
    filter algorithm is proposed. The novelty of the proposed method lies in the introduction
    of a self-healing factor after each characterization and the adaption of the degradation
    model parameters to fit to the changing degradation trend. An ensemble of five
    different state models based on weighted mean is then developed. The results show
    that the method is effective in estimating the remaining useful life of PEM fuel
    cells, with majority of the predictions falling within 5\% error. The method was
    employed in the IEEE 2014 PHM Data Challenge and led to our team emerging the
    winner of the RUL category of the challenge.
author:
- first_name: 'James Kuria '
  full_name: 'Kimotho, James Kuria '
  last_name: Kimotho
- first_name: Tobias
  full_name: Meyer, Tobias
  last_name: Meyer
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter
    with model parameter adaptation. In: <i>Prognostics and Health Management (PHM),
    2014 IEEE Conference On</i>. ; 2014:1-6. doi:<a href="https://doi.org/10.1109/ICPHM.2014.7036406">10.1109/ICPHM.2014.7036406</a>'
  apa: Kimotho, J. K., Meyer, T., &#38; Sextro, W. (2014). PEM fuel cell prognostics
    using particle filter with model parameter adaptation. In <i>Prognostics and Health
    Management (PHM), 2014 IEEE Conference on</i> (pp. 1–6). <a href="https://doi.org/10.1109/ICPHM.2014.7036406">https://doi.org/10.1109/ICPHM.2014.7036406</a>
  bibtex: '@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics
    using particle filter with model parameter adaptation}, DOI={<a href="https://doi.org/10.1109/ICPHM.2014.7036406">10.1109/ICPHM.2014.7036406</a>},
    booktitle={Prognostics and Health Management (PHM), 2014 IEEE Conference on},
    author={Kimotho, James Kuria  and Meyer, Tobias and Sextro, Walter}, year={2014},
    pages={1–6} }'
  chicago: Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell
    Prognostics Using Particle Filter with Model Parameter Adaptation.” In <i>Prognostics
    and Health Management (PHM), 2014 IEEE Conference On</i>, 1–6, 2014. <a href="https://doi.org/10.1109/ICPHM.2014.7036406">https://doi.org/10.1109/ICPHM.2014.7036406</a>.
  ieee: J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle
    filter with model parameter adaptation,” in <i>Prognostics and Health Management
    (PHM), 2014 IEEE Conference on</i>, 2014, pp. 1–6.
  mla: Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter
    with Model Parameter Adaptation.” <i>Prognostics and Health Management (PHM),
    2014 IEEE Conference On</i>, 2014, pp. 1–6, doi:<a href="https://doi.org/10.1109/ICPHM.2014.7036406">10.1109/ICPHM.2014.7036406</a>.
  short: 'J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management
    (PHM), 2014 IEEE Conference On, 2014, pp. 1–6.'
date_created: 2019-05-20T13:11:02Z
date_updated: 2019-05-20T13:12:27Z
department:
- _id: '151'
doi: 10.1109/ICPHM.2014.7036406
keyword:
- ageing
- particle filtering (numerical methods)
- proton exchange membrane fuel cells
- remaining life assessment
- PEM fuel cell prognostics
- PHM
- RUL predictions
- accelerated degradation
- adaptive particle filter algorithm
- dynamic loading
- model parameter adaptation
- prognostics and health management
- proton exchange membrane fuel cells
- remaining useful life estimation
- self-healing effect
- Adaptation models
- Data models
- Degradation
- Estimation
- Fuel cells
- Mathematical model
- Prognostics and health management
language:
- iso: eng
page: 1-6
publication: Prognostics and Health Management (PHM), 2014 IEEE Conference on
status: public
title: PEM fuel cell prognostics using particle filter with model parameter adaptation
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9880'
abstract:
- lang: eng
  text: With the paradigm shift towards prognostic and health management (PHM) of
    machinery, there is need for reliable PHM methodologies with narrow error bounds
    to allow maintenance engineers take decisive maintenance actions based on the
    prognostic results. Prognostics is mainly concerned with the estimation of the
    remaining useful life (RUL) or time to failure (TTF). The accuracy of PHM methods
    is usually a function of the features extracted from the raw data obtained from
    sensors. In cases where the extracted features do not display clear degradation
    trends, for instance highly loaded bearings, the accuracy of the state of the
    art PHM methods is significantly affected. The data which lacks clear degradation
    trend is referred to as non-trending data. This study presents a method for extracting
    degradation trends from non-trending condition monitoring data for RUL estimation.
    The raw signals are first filtered using a discrete wavelet transform (DWT) denoising
    filter to remove noise from the acquired signals. Time domain, frequency domain
    and time-frequency domain features are then extracted from the filtered signals.
    An autoregressive model is then applied to the extracted features to identify
    the degradation trends. Features representing the maximum health information are
    then selected based on a performance evaluation criteria using extreme learning
    machine (ELM) algorithm. The selected features can then be used as inputs in a
    prognostic algorithm. The feasibility of the method is demonstrated using experimental
    bearing vibration data. The performance of the method is evaluated on the accuracy
    of RUL estimation and the results show that the method can be used to accurately
    estimate RUL with a maximum error of 10\%.
author:
- first_name: James Kuria
  full_name: Kimotho, James Kuria
  last_name: Kimotho
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Kimotho JK, Sextro W. An approach for feature extraction and selection from
    non-trending data for machinery prognosis. In: <i>Proceedings of the Second European
    Conference of the Prognostics and Health Management Society 2014</i>. Vol 5. ;
    2014.'
  apa: Kimotho, J. K., &#38; Sextro, W. (2014). An approach for feature extraction
    and selection from non-trending data for machinery prognosis. In <i>Proceedings
    of the Second European Conference of the Prognostics and Health Management Society
    2014</i> (Vol. 5).
  bibtex: '@inproceedings{Kimotho_Sextro_2014, title={An approach for feature extraction
    and selection from non-trending data for machinery prognosis}, volume={5}, booktitle={Proceedings
    of the Second European Conference of the Prognostics and Health Management Society
    2014}, author={Kimotho, James Kuria and Sextro, Walter}, year={2014} }'
  chicago: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction
    and Selection from Non-Trending Data for Machinery Prognosis.” In <i>Proceedings
    of the Second European Conference of the Prognostics and Health Management Society
    2014</i>, Vol. 5, 2014.
  ieee: J. K. Kimotho and W. Sextro, “An approach for feature extraction and selection
    from non-trending data for machinery prognosis,” in <i>Proceedings of the Second
    European Conference of the Prognostics and Health Management Society 2014</i>,
    2014, vol. 5.
  mla: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction
    and Selection from Non-Trending Data for Machinery Prognosis.” <i>Proceedings
    of the Second European Conference of the Prognostics and Health Management Society
    2014</i>, vol. 5, 2014.
  short: 'J.K. Kimotho, W. Sextro, in: Proceedings of the Second European Conference
    of the Prognostics and Health Management Society 2014, 2014.'
date_created: 2019-05-20T13:13:00Z
date_updated: 2019-09-16T10:37:35Z
department:
- _id: '151'
intvolume: '         5'
keyword:
- autoregressive model ELM feature extraction feature selection non-trending Remaining
  useful Life
language:
- iso: eng
publication: Proceedings of the Second European Conference of the Prognostics and
  Health Management Society 2014
quality_controlled: '1'
status: public
title: An approach for feature extraction and selection from non-trending data for
  machinery prognosis
type: conference
user_id: '55222'
volume: 5
year: '2014'
...
---
_id: '9895'
abstract:
- lang: eng
  text: Power semiconductor modules are used to control and switch high electrical
    currents and voltages. Within the power module package wire bonding is used as
    an interconnection technology. In recent years, aluminum wire has been used preferably,
    but an ever-growing market of powerful and efficient power modules requires a
    material with better mechanical and electrical properties. For this reason, a
    technology change from aluminum to copper is indispensable. However, the copper
    wire bonding process reacts more sensitive to parameter changes. This makes manufacturing
    reliable copper bond connections a challenging task. The aim of the BMBF funded
    project Itsowl-InCuB is the development of self-optimizing techniques to enable
    the reliable production of copper bond connections under varying conditions. A
    model of the process is essential to achieve this aim. This model needs to include
    the dynamic elasto-plastic deformation, the ultrasonic softening effect and the
    proceeding adhesion between wire and substrate. This paper focusses on the pre-deformation
    process. In the touchdown phase, the wire is pressed into the V-groove of the
    tool and a small initial contact area between wire and substrate arise. The local
    characteristics of the material change abruptly because of the cold forming. Consequently,
    the pre-deformation has a strong effect on the joining process. In [1], a pre-cleaning
    effect during the touchdown process of aluminum wires by cracking of oxide layers
    was presented. These interactions of the process parameters are still largely
    unknown for copper. In a first step, this paper validates the importance of modeling
    the pre-deformation by showing its impact on the wire deformation characteristic
    experimentally. Creating cross-section views of pre-deformed copper wires has
    shown a low deformation degree compared to aluminum. By using a digital microscope
    and a scanning confocal microscope an analysis about the contact areas and penetration
    depths after touchdown has been made. Additionally, it has to be taken into account
    that the dynamical touchdown force depends on the touchdown speed and the touchdown
    force set in the bonding machine. In order to measure the overshoot in the force
    signals, a strain gauge sensor has been used. Subsequently, the affecting factors
    have been interpreted independently Furthermore, the material properties of copper
    wire have been investigated with tensile tests and hardness measurements. In a
    second step, the paper presents finite element models of the touchdown process
    for source and destination bonds. These models take the measured overshoot in
    the touchdown forces into account. A multi-linear, isotropic material model has
    been selected to map the material properties of the copper. A validation of the
    model with the experimental determined contact areas, normal pressures and penetration
    depths reveals the high model quality. Thus, the simulation is able to calculate
    and visualize the three dimensional pre-deformation with an integrated material
    parameter of the wire if the touchdown parameters of the bonding machine are known.
    Based on the calculated deformation degrees of wire and substrate, it is probably
    possible to investigate the effect of the pre-deformation on the pre-cleaning
    phase in the copper wire bonding.
author:
- first_name: Andreas
  full_name: Unger, Andreas
  last_name: Unger
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Simon
  full_name: Althoff, Simon
  last_name: Althoff
- first_name: Paul
  full_name: Eichwald, Paul
  last_name: Eichwald
- first_name: Tobias
  full_name: Meyer, Tobias
  last_name: Meyer
- first_name: Florian
  full_name: Eacock, Florian
  last_name: Eacock
- first_name: Michael
  full_name: Brökelmann, Michael
  last_name: Brökelmann
citation:
  ama: 'Unger A, Sextro W, Althoff S, et al. Experimental and Numerical Simulation
    Study of Pre-Deformed Heavy Copper Wire Wedge Bonds. In: <i>Proceedings of the
    47th International Symposium on Microelectronics (IMAPS)</i>. San Diego, CA, US;
    2014:289-294.'
  apa: Unger, A., Sextro, W., Althoff, S., Eichwald, P., Meyer, T., Eacock, F., &#38;
    Brökelmann, M. (2014). Experimental and Numerical Simulation Study of Pre-Deformed
    Heavy Copper Wire Wedge Bonds. In <i>Proceedings of the 47th International Symposium
    on Microelectronics (IMAPS)</i> (pp. 289–294). San Diego, CA, US.
  bibtex: '@inproceedings{Unger_Sextro_Althoff_Eichwald_Meyer_Eacock_Brökelmann_2014,
    place={San Diego, CA, US}, title={Experimental and Numerical Simulation Study
    of Pre-Deformed Heavy Copper Wire Wedge Bonds}, booktitle={Proceedings of the
    47th International Symposium on Microelectronics (IMAPS)}, author={Unger, Andreas
    and Sextro, Walter and Althoff, Simon and Eichwald, Paul and Meyer, Tobias and
    Eacock, Florian and Brökelmann, Michael}, year={2014}, pages={289–294} }'
  chicago: Unger, Andreas, Walter Sextro, Simon Althoff, Paul Eichwald, Tobias Meyer,
    Florian Eacock, and Michael Brökelmann. “Experimental and Numerical Simulation
    Study of Pre-Deformed Heavy Copper Wire Wedge Bonds.” In <i>Proceedings of the
    47th International Symposium on Microelectronics (IMAPS)</i>, 289–94. San Diego,
    CA, US, 2014.
  ieee: A. Unger <i>et al.</i>, “Experimental and Numerical Simulation Study of Pre-Deformed
    Heavy Copper Wire Wedge Bonds,” in <i>Proceedings of the 47th International Symposium
    on Microelectronics (IMAPS)</i>, 2014, pp. 289–294.
  mla: Unger, Andreas, et al. “Experimental and Numerical Simulation Study of Pre-Deformed
    Heavy Copper Wire Wedge Bonds.” <i>Proceedings of the 47th International Symposium
    on Microelectronics (IMAPS)</i>, 2014, pp. 289–94.
  short: 'A. Unger, W. Sextro, S. Althoff, P. Eichwald, T. Meyer, F. Eacock, M. Brökelmann,
    in: Proceedings of the 47th International Symposium on Microelectronics (IMAPS),
    San Diego, CA, US, 2014, pp. 289–294.'
date_created: 2019-05-20T13:35:09Z
date_updated: 2020-05-07T05:33:47Z
department:
- _id: '151'
keyword:
- pre-deformation
- copper wire bonding
- finite element model
language:
- iso: eng
page: 289-294
place: San Diego, CA, US
project:
- _id: '92'
  grant_number: 02 PQ2210
  name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: Proceedings of the 47th International Symposium on Microelectronics (IMAPS)
status: public
title: Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire
  Wedge Bonds
type: conference
user_id: '210'
year: '2014'
...
---
_id: '11753'
abstract:
- lang: eng
  text: This contribution describes a step-wise source counting algorithm to determine
    the number of speakers in an offline scenario. Each speaker is identified by a
    variational expectation maximization (VEM) algorithm for complex Watson mixture
    models and therefore directly yields beamforming vectors for a subsequent speech
    separation process. An observation selection criterion is proposed which improves
    the robustness of the source counting in noise. The algorithm is compared to an
    alternative VEM approach with Gaussian mixture models based on directions of arrival
    and shown to deliver improved source counting accuracy. The article concludes
    by extending the offline algorithm towards a low-latency online estimation of
    the number of active sources from the streaming input data.
author:
- first_name: Lukas
  full_name: Drude, Lukas
  id: '11213'
  last_name: Drude
- first_name: Aleksej
  full_name: Chinaev, Aleksej
  last_name: Chinaev
- first_name: Dang Hai
  full_name: Tran Vu, Dang Hai
  last_name: Tran Vu
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: 'Drude L, Chinaev A, Tran Vu DH, Haeb-Umbach R. Towards Online Source Counting
    in Speech Mixtures Applying a Variational EM for Complex Watson Mixture Models.
    In: <i>14th International Workshop on Acoustic Signal Enhancement (IWAENC 2014)</i>.
    ; 2014:213-217.'
  apa: Drude, L., Chinaev, A., Tran Vu, D. H., &#38; Haeb-Umbach, R. (2014). Towards
    Online Source Counting in Speech Mixtures Applying a Variational EM for Complex
    Watson Mixture Models. In <i>14th International Workshop on Acoustic Signal Enhancement
    (IWAENC 2014)</i> (pp. 213–217).
  bibtex: '@inproceedings{Drude_Chinaev_Tran Vu_Haeb-Umbach_2014, title={Towards Online
    Source Counting in Speech Mixtures Applying a Variational EM for Complex Watson
    Mixture Models}, booktitle={14th International Workshop on Acoustic Signal Enhancement
    (IWAENC 2014)}, author={Drude, Lukas and Chinaev, Aleksej and Tran Vu, Dang Hai
    and Haeb-Umbach, Reinhold}, year={2014}, pages={213–217} }'
  chicago: Drude, Lukas, Aleksej Chinaev, Dang Hai Tran Vu, and Reinhold Haeb-Umbach.
    “Towards Online Source Counting in Speech Mixtures Applying a Variational EM for
    Complex Watson Mixture Models.” In <i>14th International Workshop on Acoustic
    Signal Enhancement (IWAENC 2014)</i>, 213–17, 2014.
  ieee: L. Drude, A. Chinaev, D. H. Tran Vu, and R. Haeb-Umbach, “Towards Online Source
    Counting in Speech Mixtures Applying a Variational EM for Complex Watson Mixture
    Models,” in <i>14th International Workshop on Acoustic Signal Enhancement (IWAENC
    2014)</i>, 2014, pp. 213–217.
  mla: Drude, Lukas, et al. “Towards Online Source Counting in Speech Mixtures Applying
    a Variational EM for Complex Watson Mixture Models.” <i>14th International Workshop
    on Acoustic Signal Enhancement (IWAENC 2014)</i>, 2014, pp. 213–17.
  short: 'L. Drude, A. Chinaev, D.H. Tran Vu, R. Haeb-Umbach, in: 14th International
    Workshop on Acoustic Signal Enhancement (IWAENC 2014), 2014, pp. 213–217.'
date_created: 2019-07-12T05:27:35Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
keyword:
- Accuracy
- Acoustics
- Estimation
- Mathematical model
- Soruce separation
- Speech
- Vectors
- Bayes methods
- Blind source separation
- Directional statistics
- Number of speakers
- Speaker diarization
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/2014/DrChTrHaeb14.pdf
oa: '1'
page: 213-217
publication: 14th International Workshop on Acoustic Signal Enhancement (IWAENC 2014)
related_material:
  link:
  - description: Poster
    relation: supplementary_material
    url: https://groups.uni-paderborn.de/nt/pubs/2014/DrChTrHaeb14_Poster.pdf
status: public
title: Towards Online Source Counting in Speech Mixtures Applying a Variational EM
  for Complex Watson Mixture Models
type: conference
user_id: '44006'
year: '2014'
...
---
_id: '11861'
abstract:
- lang: eng
  text: 'In this contribution we present a theoretical and experimental investigation
    into the effects of reverberation and noise on features in the logarithmic mel
    power spectral domain, an intermediate stage in the computation of the mel frequency
    cepstral coefficients, prevalent in automatic speech recognition (ASR). Gaining
    insight into the complex interaction between clean speech, noise, and noisy reverberant
    speech features is essential for any ASR system to be robust against noise and
    reverberation present in distant microphone input signals. The findings are gathered
    in a probabilistic formulation of an observation model which may be used in model-based
    feature compensation schemes. The proposed observation model extends previous
    models in three major directions: First, the contribution of additive background
    noise to the observation error is explicitly taken into account. Second, an energy
    compensation constant is introduced which ensures an unbiased estimate of the
    reverberant speech features, and, third, a recursive variant of the observation
    model is developed resulting in reduced computational complexity when used in
    model-based feature compensation. The experimental section is used to evaluate
    the accuracy of the model and to describe how its parameters can be determined
    from test data.'
author:
- first_name: Volker
  full_name: Leutnant, Volker
  last_name: Leutnant
- first_name: Alexander
  full_name: Krueger, Alexander
  last_name: Krueger
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: Leutnant V, Krueger A, Haeb-Umbach R. A New Observation Model in the Logarithmic
    Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.
    <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>. 2014;22(1):95-109.
    doi:<a href="https://doi.org/10.1109/TASLP.2013.2285480">10.1109/TASLP.2013.2285480</a>
  apa: Leutnant, V., Krueger, A., &#38; Haeb-Umbach, R. (2014). A New Observation
    Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition
    of Noisy Reverberant Speech. <i>IEEE/ACM Transactions on Audio, Speech, and Language
    Processing</i>, <i>22</i>(1), 95–109. <a href="https://doi.org/10.1109/TASLP.2013.2285480">https://doi.org/10.1109/TASLP.2013.2285480</a>
  bibtex: '@article{Leutnant_Krueger_Haeb-Umbach_2014, title={A New Observation Model
    in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of
    Noisy Reverberant Speech}, volume={22}, DOI={<a href="https://doi.org/10.1109/TASLP.2013.2285480">10.1109/TASLP.2013.2285480</a>},
    number={1}, journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing},
    author={Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2014},
    pages={95–109} }'
  chicago: 'Leutnant, Volker, Alexander Krueger, and Reinhold Haeb-Umbach. “A New
    Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic
    Recognition of Noisy Reverberant Speech.” <i>IEEE/ACM Transactions on Audio, Speech,
    and Language Processing</i> 22, no. 1 (2014): 95–109. <a href="https://doi.org/10.1109/TASLP.2013.2285480">https://doi.org/10.1109/TASLP.2013.2285480</a>.'
  ieee: V. Leutnant, A. Krueger, and R. Haeb-Umbach, “A New Observation Model in the
    Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant
    Speech,” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>,
    vol. 22, no. 1, pp. 95–109, 2014.
  mla: Leutnant, Volker, et al. “A New Observation Model in the Logarithmic Mel Power
    Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.” <i>IEEE/ACM
    Transactions on Audio, Speech, and Language Processing</i>, vol. 22, no. 1, 2014,
    pp. 95–109, doi:<a href="https://doi.org/10.1109/TASLP.2013.2285480">10.1109/TASLP.2013.2285480</a>.
  short: V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE/ACM Transactions on Audio,
    Speech, and Language Processing 22 (2014) 95–109.
date_created: 2019-07-12T05:29:41Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASLP.2013.2285480
intvolume: '        22'
issue: '1'
keyword:
- computational complexity
- reverberation
- speech recognition
- automatic speech recognition
- background noise
- clean speech
- computational complexity
- energy compensation
- logarithmic mel power spectral domain
- mel frequency cepstral coefficients
- microphone input signals
- model-based feature compensation schemes
- noisy reverberant speech automatic recognition
- noisy reverberant speech features
- reverberation
- Atmospheric modeling
- Computational modeling
- Noise
- Noise measurement
- Reverberation
- Speech
- Vectors
- Model-based feature compensation
- observation model for reverberant and noisy speech
- recursive observation model
- robust automatic speech recognition
language:
- iso: eng
page: 95-109
publication: IEEE/ACM Transactions on Audio, Speech, and Language Processing
publication_identifier:
  issn:
  - 2329-9290
status: public
title: A New Observation Model in the Logarithmic Mel Power Spectral Domain for the
  Automatic Recognition of Noisy Reverberant Speech
type: journal_article
user_id: '44006'
volume: 22
year: '2014'
...
---
_id: '11867'
abstract:
- lang: eng
  text: 'New waves of consumer-centric applications, such as voice search and voice
    interaction with mobile devices and home entertainment systems, increasingly require
    automatic speech recognition (ASR) to be robust to the full range of real-world
    noise and other acoustic distorting conditions. Despite its practical importance,
    however, the inherent links between and distinctions among the myriad of methods
    for noise-robust ASR have yet to be carefully studied in order to advance the
    field further. To this end, it is critical to establish a solid, consistent, and
    common mathematical foundation for noise-robust ASR, which is lacking at present.
    This article is intended to fill this gap and to provide a thorough overview of
    modern noise-robust techniques for ASR developed over the past 30 years. We emphasize
    methods that are proven to be successful and that are likely to sustain or expand
    their future applicability. We distill key insights from our comprehensive overview
    in this field and take a fresh look at a few old problems, which nevertheless
    are still highly relevant today. Specifically, we have analyzed and categorized
    a wide range of noise-robust techniques using five different criteria: 1) feature-domain
    vs. model-domain processing, 2) the use of prior knowledge about the acoustic
    environment distortion, 3) the use of explicit environment-distortion models,
    4) deterministic vs. uncertainty processing, and 5) the use of acoustic models
    trained jointly with the same feature enhancement or model adaptation process
    used in the testing stage. With this taxonomy-oriented review, we equip the reader
    with the insight to choose among techniques and with the awareness of the performance-complexity
    tradeoffs. The pros and cons of using different noise-robust ASR techniques in
    practical application scenarios are provided as a guide to interested practitioners.
    The current challenges and future research directions in this field is also carefully
    analyzed.'
author:
- first_name: Jinyu
  full_name: Li, Jinyu
  last_name: Li
- first_name: Li
  full_name: Deng, Li
  last_name: Deng
- first_name: Yifan
  full_name: Gong, Yifan
  last_name: Gong
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: Li J, Deng L, Gong Y, Haeb-Umbach R. An Overview of Noise-Robust Automatic
    Speech Recognition. <i>IEEE Transactions on Audio, Speech and Language Processing</i>.
    2014;22(4):745-777. doi:<a href="https://doi.org/10.1109/TASLP.2014.2304637">10.1109/TASLP.2014.2304637</a>
  apa: Li, J., Deng, L., Gong, Y., &#38; Haeb-Umbach, R. (2014). An Overview of Noise-Robust
    Automatic Speech Recognition. <i>IEEE Transactions on Audio, Speech and Language
    Processing</i>, <i>22</i>(4), 745–777. <a href="https://doi.org/10.1109/TASLP.2014.2304637">https://doi.org/10.1109/TASLP.2014.2304637</a>
  bibtex: '@article{Li_Deng_Gong_Haeb-Umbach_2014, title={An Overview of Noise-Robust
    Automatic Speech Recognition}, volume={22}, DOI={<a href="https://doi.org/10.1109/TASLP.2014.2304637">10.1109/TASLP.2014.2304637</a>},
    number={4}, journal={IEEE Transactions on Audio, Speech and Language Processing},
    author={Li, Jinyu and Deng, Li and Gong, Yifan and Haeb-Umbach, Reinhold}, year={2014},
    pages={745–777} }'
  chicago: 'Li, Jinyu, Li Deng, Yifan Gong, and Reinhold Haeb-Umbach. “An Overview
    of Noise-Robust Automatic Speech Recognition.” <i>IEEE Transactions on Audio,
    Speech and Language Processing</i> 22, no. 4 (2014): 745–77. <a href="https://doi.org/10.1109/TASLP.2014.2304637">https://doi.org/10.1109/TASLP.2014.2304637</a>.'
  ieee: J. Li, L. Deng, Y. Gong, and R. Haeb-Umbach, “An Overview of Noise-Robust
    Automatic Speech Recognition,” <i>IEEE Transactions on Audio, Speech and Language
    Processing</i>, vol. 22, no. 4, pp. 745–777, 2014.
  mla: Li, Jinyu, et al. “An Overview of Noise-Robust Automatic Speech Recognition.”
    <i>IEEE Transactions on Audio, Speech and Language Processing</i>, vol. 22, no.
    4, 2014, pp. 745–77, doi:<a href="https://doi.org/10.1109/TASLP.2014.2304637">10.1109/TASLP.2014.2304637</a>.
  short: J. Li, L. Deng, Y. Gong, R. Haeb-Umbach, IEEE Transactions on Audio, Speech
    and Language Processing 22 (2014) 745–777.
date_created: 2019-07-12T05:29:47Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASLP.2014.2304637
intvolume: '        22'
issue: '4'
keyword:
- Speech recognition
- compensation
- distortion modeling
- joint model training
- noise
- robustness
- uncertainty processing
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6732927
oa: '1'
page: 745-777
publication: IEEE Transactions on Audio, Speech and Language Processing
status: public
title: An Overview of Noise-Robust Automatic Speech Recognition
type: journal_article
user_id: '44006'
volume: 22
year: '2014'
...
---
_id: '4425'
abstract:
- lang: ger
  text: Designbasierte Forschung zielt darauf, praktische Problemstellungen zu lösen
    und gleichzeitig wissenschaftliche Theorien (weiter) zu entwickeln. Dabei durchläuft
    designbasierte Forschung in der Regel die Phasen der Problemdefinition, der Entwicklung
    eines didaktischen Designs, der zyklischen Design-Implementation sowie der Evaluation
    und Reflexion in enger Kooperation von Wissenschaft und Praxis. Inwieweit es mittels
    designbasierter Forschung gelingen kann, wissenschaftliche Gültigkeit und praktische
    Relevanz von Forschung gleichermassen zu steigern, wird im Beitrag anhand des
    Konzepts multipler Signifikanzen erörtert. Dabei wird diskutiert, wie die Gestaltung
    der Kooperation von Forschenden und Praktikern/-innen dazu beitragen kann, die
    praktische, statistische, klinische und wirtschaftliche Signifikanz des designbasierten
    Forschungsprozesses sicherzustellen.
author:
- first_name: Taiga
  full_name: Brahm, Taiga
  last_name: Brahm
- first_name: Tobias
  full_name: Jenert, Tobias
  id: '71994'
  last_name: Jenert
  orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
  ama: 'Brahm T, Jenert T. Wissenschafts-Praxis-Kooperation in designbasierter Forschung:
    Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer Relevanz.
    <i>Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B)</i>. 2014;(Band
    27):45-62.'
  apa: 'Brahm, T., &#38; Jenert, T. (2014). Wissenschafts-Praxis-Kooperation in designbasierter
    Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer
    Relevanz. <i>Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte (ZBW-B)</i>,
    <i>Band 27</i>, 45–62.'
  bibtex: '@article{Brahm_Jenert_2014, title={Wissenschafts-Praxis-Kooperation in
    designbasierter Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit
    und praktischer Relevanz}, number={Band 27}, journal={Zeitschrift für Berufs-und
    Wirtschaftspädagogik-Beihefte (ZBW-B)}, publisher={Steiner}, author={Brahm, Taiga
    and Jenert, Tobias}, year={2014}, pages={45–62} }'
  chicago: 'Brahm, Taiga, and Tobias Jenert. “Wissenschafts-Praxis-Kooperation in
    Designbasierter Forschung: Im Spannungsfeld Zwischen Wissenschaftlicher Gültigkeit
    Und Praktischer Relevanz.” <i>Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte
    (ZBW-B)</i>, no. Band 27 (2014): 45–62.'
  ieee: 'T. Brahm and T. Jenert, “Wissenschafts-Praxis-Kooperation in designbasierter
    Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer
    Relevanz,” <i>Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B)</i>,
    no. Band 27, pp. 45–62, 2014.'
  mla: 'Brahm, Taiga, and Tobias Jenert. “Wissenschafts-Praxis-Kooperation in Designbasierter
    Forschung: Im Spannungsfeld Zwischen Wissenschaftlicher Gültigkeit Und Praktischer
    Relevanz.” <i>Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte (ZBW-B)</i>,
    no. Band 27, Steiner, 2014, pp. 45–62.'
  short: T. Brahm, T. Jenert, Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte
    (ZBW-B) (2014) 45–62.
date_created: 2018-09-18T09:13:31Z
date_updated: 2024-03-21T14:43:48Z
department:
- _id: '208'
- _id: '282'
extern: '1'
issue: Band 27
keyword:
- Design-based research
- design research
- validity
- significance
- Bildungsforschung
- designbasierte Forschung
- Wissenschafts-Praxis-Kommunikation
language:
- iso: eng
page: 45-62
publication: Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B)
publication_identifier:
  issn:
  - 0172-2875
publisher: Steiner
quality_controlled: '1'
status: public
title: 'Wissenschafts-Praxis-Kooperation in designbasierter Forschung: Im Spannungsfeld
  zwischen wissenschaftlicher Gültigkeit und praktischer Relevanz'
type: journal_article
user_id: '71994'
year: '2014'
...
---
_id: '10620'
author:
- first_name: Jahanzeb
  full_name: Anwer, Jahanzeb
  last_name: Anwer
- first_name: Sebastian
  full_name: Meisner, Sebastian
  last_name: Meisner
- first_name: Marco
  full_name: Platzner, Marco
  id: '398'
  last_name: Platzner
citation:
  ama: 'Anwer J, Meisner S, Platzner M. Dynamic reliability management: Reconfiguring
    reliability-levels of hardware designs at runtime. In: <i>Reconfigurable Computing
    and FPGAs (ReConFig), 2013 International Conference On</i>. ; 2013:1-6. doi:<a
    href="https://doi.org/10.1109/ReConFig.2013.6732280">10.1109/ReConFig.2013.6732280</a>'
  apa: 'Anwer, J., Meisner, S., &#38; Platzner, M. (2013). Dynamic reliability management:
    Reconfiguring reliability-levels of hardware designs at runtime. In <i>Reconfigurable
    Computing and FPGAs (ReConFig), 2013 International Conference on</i> (pp. 1–6).
    <a href="https://doi.org/10.1109/ReConFig.2013.6732280">https://doi.org/10.1109/ReConFig.2013.6732280</a>'
  bibtex: '@inproceedings{Anwer_Meisner_Platzner_2013, title={Dynamic reliability
    management: Reconfiguring reliability-levels of hardware designs at runtime},
    DOI={<a href="https://doi.org/10.1109/ReConFig.2013.6732280">10.1109/ReConFig.2013.6732280</a>},
    booktitle={Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
    on}, author={Anwer, Jahanzeb and Meisner, Sebastian and Platzner, Marco}, year={2013},
    pages={1–6} }'
  chicago: 'Anwer, Jahanzeb, Sebastian Meisner, and Marco Platzner. “Dynamic Reliability
    Management: Reconfiguring Reliability-Levels of Hardware Designs at Runtime.”
    In <i>Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
    On</i>, 1–6, 2013. <a href="https://doi.org/10.1109/ReConFig.2013.6732280">https://doi.org/10.1109/ReConFig.2013.6732280</a>.'
  ieee: 'J. Anwer, S. Meisner, and M. Platzner, “Dynamic reliability management: Reconfiguring
    reliability-levels of hardware designs at runtime,” in <i>Reconfigurable Computing
    and FPGAs (ReConFig), 2013 International Conference on</i>, 2013, pp. 1–6.'
  mla: 'Anwer, Jahanzeb, et al. “Dynamic Reliability Management: Reconfiguring Reliability-Levels
    of Hardware Designs at Runtime.” <i>Reconfigurable Computing and FPGAs (ReConFig),
    2013 International Conference On</i>, 2013, pp. 1–6, doi:<a href="https://doi.org/10.1109/ReConFig.2013.6732280">10.1109/ReConFig.2013.6732280</a>.'
  short: 'J. Anwer, S. Meisner, M. Platzner, in: Reconfigurable Computing and FPGAs
    (ReConFig), 2013 International Conference On, 2013, pp. 1–6.'
date_created: 2019-07-10T09:32:57Z
date_updated: 2022-01-06T06:50:48Z
department:
- _id: '78'
doi: 10.1109/ReConFig.2013.6732280
keyword:
- fault tolerant computing
- field programmable gate arrays
- logic design
- reliability
- BYU-LANL tool
- DRM tool flow
- FPGA based hardware designs
- avionic application
- device technologies
- dynamic reliability management
- fault-tolerant operation
- hardware designs
- reconfiguring reliability levels
- space applications
- Field programmable gate arrays
- Hardware
- Redundancy
- Reliability engineering
- Runtime
- Tunneling magnetoresistance
language:
- iso: eng
page: 1-6
publication: Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
  on
status: public
title: 'Dynamic reliability management: Reconfiguring reliability-levels of hardware
  designs at runtime'
type: conference
user_id: '3118'
year: '2013'
...
