[{"publication_status":"published","publication_identifier":{"issn":["2172-038X","2172-038X"]},"year":"2017","citation":{"chicago":"Ohms, B., A. Kleine, and Ulrich Hilleringmann. “Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices.” <i>Renewable Energy and Power Quality</i>, 2017, 469–73. <a href=\"https://doi.org/10.24084/repqj10.349\">https://doi.org/10.24084/repqj10.349</a>.","ieee":"B. Ohms, A. Kleine, and U. Hilleringmann, “Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices,” <i>Renewable Energy and Power Quality</i>, pp. 469–473, 2017, doi: <a href=\"https://doi.org/10.24084/repqj10.349\">10.24084/repqj10.349</a>.","ama":"Ohms B, Kleine A, Hilleringmann U. Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices. <i>Renewable Energy and Power Quality</i>. Published online 2017:469-473. doi:<a href=\"https://doi.org/10.24084/repqj10.349\">10.24084/repqj10.349</a>","short":"B. Ohms, A. Kleine, U. Hilleringmann, Renewable Energy and Power Quality (2017) 469–473.","bibtex":"@article{Ohms_Kleine_Hilleringmann_2017, title={Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices}, DOI={<a href=\"https://doi.org/10.24084/repqj10.349\">10.24084/repqj10.349</a>}, journal={Renewable Energy and Power Quality}, publisher={AEDERMACP (European Association for the Development of Renewable Energies and Power Quality)}, author={Ohms, B. and Kleine, A. and Hilleringmann, Ulrich}, year={2017}, pages={469–473} }","mla":"Ohms, B., et al. “Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices.” <i>Renewable Energy and Power Quality</i>, AEDERMACP (European Association for the Development of Renewable Energies and Power Quality), 2017, pp. 469–73, doi:<a href=\"https://doi.org/10.24084/repqj10.349\">10.24084/repqj10.349</a>.","apa":"Ohms, B., Kleine, A., &#38; Hilleringmann, U. (2017). Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices. <i>Renewable Energy and Power Quality</i>, 469–473. <a href=\"https://doi.org/10.24084/repqj10.349\">https://doi.org/10.24084/repqj10.349</a>"},"page":"469-473","publisher":"AEDERMACP (European Association for the Development of Renewable Energies and Power Quality)","date_updated":"2023-03-21T10:20:11Z","date_created":"2023-01-24T11:56:30Z","author":[{"last_name":"Ohms","full_name":"Ohms, B.","first_name":"B."},{"last_name":"Kleine","full_name":"Kleine, A.","first_name":"A."},{"id":"20179","full_name":"Hilleringmann, Ulrich","last_name":"Hilleringmann","first_name":"Ulrich"}],"title":"Increasing the Efficiency of Solar Cells by Combining Silicon- and Dye Sensitized Devices","doi":"10.24084/repqj10.349","type":"journal_article","publication":"Renewable Energy and Power Quality","status":"public","_id":"39525","user_id":"20179","department":[{"_id":"59"}],"keyword":["Electrical and Electronic Engineering","Energy Engineering and Power Technology","Renewable Energy","Sustainability and the Environment"],"language":[{"iso":"eng"}]},{"status":"public","type":"journal_article","publication":"Applied Thermal Engineering","keyword":["Industrial and Manufacturing Engineering","Energy Engineering and Power Technology"],"language":[{"iso":"eng"}],"_id":"45018","user_id":"59261","year":"2017","citation":{"chicago":"Dubberke, Frithjof H., Matthias Linnemann, Wameedh Khider Abbas, Elmar Baumhögger, Klaus-Peter Priebe, Maximilian Roedder, Matthias Neef, and Jadran Vrabec. “Experimental Setup of a Cascaded Two-Stage Organic Rankine Cycle.” <i>Applied Thermal Engineering</i> 131 (2017): 958–64. <a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">https://doi.org/10.1016/j.applthermaleng.2017.11.137</a>.","ieee":"F. H. Dubberke <i>et al.</i>, “Experimental setup of a cascaded two-stage organic Rankine cycle,” <i>Applied Thermal Engineering</i>, vol. 131, pp. 958–964, 2017, doi: <a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">10.1016/j.applthermaleng.2017.11.137</a>.","ama":"Dubberke FH, Linnemann M, Abbas WK, et al. Experimental setup of a cascaded two-stage organic Rankine cycle. <i>Applied Thermal Engineering</i>. 2017;131:958-964. doi:<a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">10.1016/j.applthermaleng.2017.11.137</a>","mla":"Dubberke, Frithjof H., et al. “Experimental Setup of a Cascaded Two-Stage Organic Rankine Cycle.” <i>Applied Thermal Engineering</i>, vol. 131, Elsevier BV, 2017, pp. 958–64, doi:<a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">10.1016/j.applthermaleng.2017.11.137</a>.","bibtex":"@article{Dubberke_Linnemann_Abbas_Baumhögger_Priebe_Roedder_Neef_Vrabec_2017, title={Experimental setup of a cascaded two-stage organic Rankine cycle}, volume={131}, DOI={<a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">10.1016/j.applthermaleng.2017.11.137</a>}, journal={Applied Thermal Engineering}, publisher={Elsevier BV}, author={Dubberke, Frithjof H. and Linnemann, Matthias and Abbas, Wameedh Khider and Baumhögger, Elmar and Priebe, Klaus-Peter and Roedder, Maximilian and Neef, Matthias and Vrabec, Jadran}, year={2017}, pages={958–964} }","short":"F.H. Dubberke, M. Linnemann, W.K. Abbas, E. Baumhögger, K.-P. Priebe, M. Roedder, M. Neef, J. Vrabec, Applied Thermal Engineering 131 (2017) 958–964.","apa":"Dubberke, F. H., Linnemann, M., Abbas, W. K., Baumhögger, E., Priebe, K.-P., Roedder, M., Neef, M., &#38; Vrabec, J. (2017). Experimental setup of a cascaded two-stage organic Rankine cycle. <i>Applied Thermal Engineering</i>, <i>131</i>, 958–964. <a href=\"https://doi.org/10.1016/j.applthermaleng.2017.11.137\">https://doi.org/10.1016/j.applthermaleng.2017.11.137</a>"},"intvolume":"       131","page":"958-964","publication_status":"published","publication_identifier":{"issn":["1359-4311"]},"title":"Experimental setup of a cascaded two-stage organic Rankine cycle","doi":"10.1016/j.applthermaleng.2017.11.137","publisher":"Elsevier BV","date_updated":"2023-07-12T07:58:52Z","date_created":"2023-05-17T06:53:56Z","author":[{"full_name":"Dubberke, Frithjof H.","last_name":"Dubberke","first_name":"Frithjof H."},{"last_name":"Linnemann","full_name":"Linnemann, Matthias","first_name":"Matthias"},{"first_name":"Wameedh Khider","last_name":"Abbas","full_name":"Abbas, Wameedh Khider"},{"first_name":"Elmar","full_name":"Baumhögger, Elmar","last_name":"Baumhögger"},{"last_name":"Priebe","full_name":"Priebe, Klaus-Peter","first_name":"Klaus-Peter"},{"first_name":"Maximilian","last_name":"Roedder","full_name":"Roedder, Maximilian"},{"last_name":"Neef","full_name":"Neef, Matthias","first_name":"Matthias"},{"full_name":"Vrabec, Jadran","last_name":"Vrabec","first_name":"Jadran"}],"volume":131},{"abstract":[{"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.","lang":"eng"}],"status":"public","type":"conference","publication":"The 2nd International Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia, 2016.","keyword":["Kinematics and compliances","flexible viscoelastic suspension model","frictional rolling contact analysis","frictional power distribution."],"language":[{"iso":"eng"}],"_id":"9963","user_id":"55222","department":[{"_id":"151"}],"place":"Cyberjaya, Malaysia, 2016","year":"2016","citation":{"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.","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.","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.","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} }","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.","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."},"page":"1-12","title":"Aspects of Flexible Viscoelastic Suspension Modeling for Frictional Rolling Contact Analysis using ADAMS","date_updated":"2019-05-27T09:13:54Z","author":[{"full_name":"Kohl, Sergej","last_name":"Kohl","first_name":"Sergej"},{"last_name":"Sextro","full_name":"Sextro, Walter","id":"21220","first_name":"Walter"},{"first_name":"Sebastian","last_name":"Schulze","full_name":"Schulze, Sebastian"}],"date_created":"2019-05-27T09:13:14Z"},{"publication_identifier":{"issn":["0010-2180"]},"publication_status":"published","intvolume":"       169","page":"261-271","citation":{"short":"O.P. Korobeinichev, M.B. Gonchikzhapov, A.A. Paletsky, A.G. Tereshchenko, I.K. Shundrina, L.V. Kuibida, A.G. Shmakov, Y. Hu, Combustion and Flame 169 (2016) 261–271.","bibtex":"@article{Korobeinichev_Gonchikzhapov_Paletsky_Tereshchenko_Shundrina_Kuibida_Shmakov_Hu_2016, title={Counterflow flames of ultrahigh-molecular-weight polyethylene with and without triphenylphosphate}, volume={169}, DOI={<a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">10.1016/j.combustflame.2016.04.019</a>}, journal={Combustion and Flame}, publisher={Elsevier BV}, author={Korobeinichev, O.P. and Gonchikzhapov, M.B. and Paletsky, A.A. and Tereshchenko, A.G. and Shundrina, I.K. and Kuibida, L.V. and Shmakov, A.G. and Hu, Y.}, year={2016}, pages={261–271} }","mla":"Korobeinichev, O. P., et al. “Counterflow Flames of Ultrahigh-Molecular-Weight Polyethylene with and without Triphenylphosphate.” <i>Combustion and Flame</i>, vol. 169, Elsevier BV, 2016, pp. 261–71, doi:<a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">10.1016/j.combustflame.2016.04.019</a>.","apa":"Korobeinichev, O. P., Gonchikzhapov, M. B., Paletsky, A. A., Tereshchenko, A. G., Shundrina, I. K., Kuibida, L. V., Shmakov, A. G., &#38; Hu, Y. (2016). Counterflow flames of ultrahigh-molecular-weight polyethylene with and without triphenylphosphate. <i>Combustion and Flame</i>, <i>169</i>, 261–271. <a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">https://doi.org/10.1016/j.combustflame.2016.04.019</a>","ama":"Korobeinichev OP, Gonchikzhapov MB, Paletsky AA, et al. Counterflow flames of ultrahigh-molecular-weight polyethylene with and without triphenylphosphate. <i>Combustion and Flame</i>. 2016;169:261-271. doi:<a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">10.1016/j.combustflame.2016.04.019</a>","chicago":"Korobeinichev, O.P., M.B. Gonchikzhapov, A.A. Paletsky, A.G. Tereshchenko, I.K. Shundrina, L.V. Kuibida, A.G. Shmakov, and Y. Hu. “Counterflow Flames of Ultrahigh-Molecular-Weight Polyethylene with and without Triphenylphosphate.” <i>Combustion and Flame</i> 169 (2016): 261–71. <a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">https://doi.org/10.1016/j.combustflame.2016.04.019</a>.","ieee":"O. P. Korobeinichev <i>et al.</i>, “Counterflow flames of ultrahigh-molecular-weight polyethylene with and without triphenylphosphate,” <i>Combustion and Flame</i>, vol. 169, pp. 261–271, 2016, doi: <a href=\"https://doi.org/10.1016/j.combustflame.2016.04.019\">10.1016/j.combustflame.2016.04.019</a>."},"year":"2016","volume":169,"date_created":"2022-08-02T10:19:46Z","author":[{"full_name":"Korobeinichev, O.P.","last_name":"Korobeinichev","first_name":"O.P."},{"first_name":"M.B.","full_name":"Gonchikzhapov, M.B.","last_name":"Gonchikzhapov"},{"last_name":"Paletsky","full_name":"Paletsky, A.A.","first_name":"A.A."},{"first_name":"A.G.","last_name":"Tereshchenko","full_name":"Tereshchenko, A.G."},{"first_name":"I.K.","last_name":"Shundrina","full_name":"Shundrina, I.K."},{"first_name":"L.V.","last_name":"Kuibida","full_name":"Kuibida, L.V."},{"full_name":"Shmakov, A.G.","last_name":"Shmakov","first_name":"A.G."},{"last_name":"Hu","full_name":"Hu, Y.","first_name":"Y."}],"publisher":"Elsevier BV","date_updated":"2022-08-15T13:54:33Z","doi":"10.1016/j.combustflame.2016.04.019","title":"Counterflow flames of ultrahigh-molecular-weight polyethylene with and without triphenylphosphate","publication":"Combustion and Flame","type":"journal_article","status":"public","user_id":"94996","_id":"32479","language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy","Energy Engineering and Power Technology","Fuel Technology","General Chemical Engineering","General Chemistry"]},{"type":"journal_article","publication":"Procedia Structural Integrity","status":"public","user_id":"48411","department":[{"_id":"9"},{"_id":"158"}],"_id":"41533","language":[{"iso":"eng"}],"keyword":["General Engineering","Energy Engineering and Power Technology"],"publication_status":"published","publication_identifier":{"issn":["2452-3216"]},"citation":{"ama":"Reschetnik W, Brüggemann J-P, Aydinöz ME, et al. Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy. <i>Procedia Structural Integrity</i>. 2016;2:3040-3048. doi:<a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">10.1016/j.prostr.2016.06.380</a>","ieee":"W. Reschetnik <i>et al.</i>, “Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy,” <i>Procedia Structural Integrity</i>, vol. 2, pp. 3040–3048, 2016, doi: <a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">10.1016/j.prostr.2016.06.380</a>.","chicago":"Reschetnik, Wadim, Jan-Peter Brüggemann, Mehmet Esat Aydinöz, Olexandr Grydin, Kay-Peter Hoyer, Gunter Kullmer, and Hans-Albert Richard. “Fatigue Crack Growth Behavior and Mechanical Properties of Additively Processed EN AW-7075 Aluminium Alloy.” <i>Procedia Structural Integrity</i> 2 (2016): 3040–48. <a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">https://doi.org/10.1016/j.prostr.2016.06.380</a>.","mla":"Reschetnik, Wadim, et al. “Fatigue Crack Growth Behavior and Mechanical Properties of Additively Processed EN AW-7075 Aluminium Alloy.” <i>Procedia Structural Integrity</i>, vol. 2, Elsevier BV, 2016, pp. 3040–48, doi:<a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">10.1016/j.prostr.2016.06.380</a>.","short":"W. Reschetnik, J.-P. Brüggemann, M.E. Aydinöz, O. Grydin, K.-P. Hoyer, G. Kullmer, H.-A. Richard, Procedia Structural Integrity 2 (2016) 3040–3048.","bibtex":"@article{Reschetnik_Brüggemann_Aydinöz_Grydin_Hoyer_Kullmer_Richard_2016, title={Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy}, volume={2}, DOI={<a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">10.1016/j.prostr.2016.06.380</a>}, journal={Procedia Structural Integrity}, publisher={Elsevier BV}, author={Reschetnik, Wadim and Brüggemann, Jan-Peter and Aydinöz, Mehmet Esat and Grydin, Olexandr and Hoyer, Kay-Peter and Kullmer, Gunter and Richard, Hans-Albert}, year={2016}, pages={3040–3048} }","apa":"Reschetnik, W., Brüggemann, J.-P., Aydinöz, M. E., Grydin, O., Hoyer, K.-P., Kullmer, G., &#38; Richard, H.-A. (2016). Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy. <i>Procedia Structural Integrity</i>, <i>2</i>, 3040–3048. <a href=\"https://doi.org/10.1016/j.prostr.2016.06.380\">https://doi.org/10.1016/j.prostr.2016.06.380</a>"},"page":"3040-3048","intvolume":"         2","year":"2016","date_created":"2023-02-02T14:49:52Z","author":[{"first_name":"Wadim","last_name":"Reschetnik","full_name":"Reschetnik, Wadim"},{"full_name":"Brüggemann, Jan-Peter","last_name":"Brüggemann","first_name":"Jan-Peter"},{"first_name":"Mehmet Esat","last_name":"Aydinöz","full_name":"Aydinöz, Mehmet Esat"},{"full_name":"Grydin, Olexandr","id":"43822","last_name":"Grydin","first_name":"Olexandr"},{"last_name":"Hoyer","full_name":"Hoyer, Kay-Peter","id":"48411","first_name":"Kay-Peter"},{"full_name":"Kullmer, Gunter","id":"291","last_name":"Kullmer","first_name":"Gunter"},{"first_name":"Hans-Albert","full_name":"Richard, Hans-Albert","last_name":"Richard"}],"volume":2,"publisher":"Elsevier BV","date_updated":"2023-04-27T16:50:06Z","doi":"10.1016/j.prostr.2016.06.380","title":"Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy"},{"type":"journal_article","publication":"Archive of Applied Mechanics","status":"public","user_id":"55222","department":[{"_id":"151"}],"_id":"9874","language":[{"iso":"eng"}],"keyword":["Reliability","Ultrasonic power transducers","FMEA"],"quality_controlled":"1","publication_identifier":{"issn":["0939-1533"]},"citation":{"ama":"Hemsel T, Bornmann P, Morita T, Sondermann-Wölke C, Sextro W. Reliability analysis of ultrasonic power transducers. <i>Archive of Applied Mechanics</i>. 2014:1-7. doi:<a href=\"https://doi.org/10.1007/s00419-014-0965-4\">10.1007/s00419-014-0965-4</a>","chicago":"Hemsel, Tobias, Peter Bornmann, Takeshi Morita, Christoph Sondermann-Wölke, and Walter Sextro. “Reliability Analysis of Ultrasonic Power Transducers.” <i>Archive of Applied Mechanics</i>, 2014, 1–7. <a href=\"https://doi.org/10.1007/s00419-014-0965-4\">https://doi.org/10.1007/s00419-014-0965-4</a>.","ieee":"T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, and W. Sextro, “Reliability analysis of ultrasonic power transducers,” <i>Archive of Applied Mechanics</i>, pp. 1–7, 2014.","apa":"Hemsel, T., Bornmann, P., Morita, T., Sondermann-Wölke, C., &#38; Sextro, W. (2014). Reliability analysis of ultrasonic power transducers. <i>Archive of Applied Mechanics</i>, 1–7. <a href=\"https://doi.org/10.1007/s00419-014-0965-4\">https://doi.org/10.1007/s00419-014-0965-4</a>","bibtex":"@article{Hemsel_Bornmann_Morita_Sondermann-Wölke_Sextro_2014, title={Reliability analysis of ultrasonic power transducers}, DOI={<a href=\"https://doi.org/10.1007/s00419-014-0965-4\">10.1007/s00419-014-0965-4</a>}, journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg}, author={Hemsel, Tobias and Bornmann, Peter and Morita, Takeshi and Sondermann-Wölke, Christoph and Sextro, Walter}, year={2014}, pages={1–7} }","short":"T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, W. Sextro, Archive of Applied Mechanics (2014) 1–7.","mla":"Hemsel, Tobias, et al. “Reliability Analysis of Ultrasonic Power Transducers.” <i>Archive of Applied Mechanics</i>, Springer Berlin Heidelberg, 2014, pp. 1–7, doi:<a href=\"https://doi.org/10.1007/s00419-014-0965-4\">10.1007/s00419-014-0965-4</a>."},"page":"1-7","year":"2014","date_created":"2019-05-20T13:01:25Z","author":[{"first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210"},{"first_name":"Peter","full_name":"Bornmann, Peter","last_name":"Bornmann"},{"first_name":"Takeshi","full_name":"Morita, Takeshi","last_name":"Morita"},{"last_name":"Sondermann-Wölke","full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph"},{"first_name":"Walter","last_name":"Sextro","full_name":"Sextro, Walter","id":"21220"}],"publisher":"Springer Berlin Heidelberg","date_updated":"2019-09-16T10:57:23Z","doi":"10.1007/s00419-014-0965-4","title":"Reliability analysis of ultrasonic power transducers"},{"type":"journal_article","publication":"Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on","abstract":[{"lang":"eng","text":"(K,Na)NbO3 ceramics have attracted much attention as lead-free piezoelectric materials with high piezoelectric properties. High-quality (K,Na)NbO3 ceramics can be sintered using KNbO3 and NaNbO3 powders synthesized by a hydrothermal method. In this study, to enhance the quality factor of the ceramics, high-power ultrasonic irradiation was employed during the hydrothermal method, which led to a reduction in the particle size of the resultant powders."}],"status":"public","_id":"9878","user_id":"55222","department":[{"_id":"151"}],"keyword":["Q-factor","ceramics","crystal growth from solution","particle size","piezoelectric materials","potassium compounds","powders","sintering","sodium compounds","ultrasonic effects","(K0.48Na0.52)NbO3","KNbO3 powders","NaNbO3 powders","high-power ultrasonic irradiation","lead-free piezoelectric materials","lead-free piezoelectric powders","particle size reduction","piezoelectric properties","quality factor","sintered (K0.48Na0.52)NbO3 ceramics","sintering","ultrasonic-assisted hydrothermal method","Acoustics","Ceramics","Lead","Piezoelectric materials","Powders","Radiation effects","Transducers"],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["0885-3010"]},"quality_controlled":"1","issue":"2","year":"2014","citation":{"ama":"Isobe G, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on</i>. 2014;61(2):225-230. doi:<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>","chicago":"Isobe, G., Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i> 61, no. 2 (2014): 225–30. <a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">https://doi.org/10.1109/TUFFC.2014.6722608</a>.","ieee":"G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics,” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on</i>, vol. 61, no. 2, pp. 225–230, 2014.","apa":"Isobe, G., Maeda, T., Bornmann, P., Hemsel, T., &#38; Morita, T. (2014). Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i>, <i>61</i>(2), 225–230. <a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">https://doi.org/10.1109/TUFFC.2014.6722608</a>","mla":"Isobe, G., et al. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i>, vol. 61, no. 2, 2014, pp. 225–30, doi:<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>.","bibtex":"@article{Isobe_Maeda_Bornmann_Hemsel_Morita_2014, title={Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics}, volume={61}, DOI={<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>}, number={2}, journal={Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on}, author={Isobe, G. and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2014}, pages={225–230} }","short":"G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On 61 (2014) 225–230."},"intvolume":"        61","page":"225-230","date_updated":"2019-09-16T10:53:17Z","date_created":"2019-05-20T13:10:14Z","author":[{"last_name":"Isobe","full_name":"Isobe, G.","first_name":"G."},{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"full_name":"Bornmann, Peter","last_name":"Bornmann","first_name":"Peter"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"volume":61,"title":"Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics","doi":"10.1109/TUFFC.2014.6722608"},{"status":"public","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."}],"type":"journal_article","publication":"IEEE/ACM Transactions on Audio, Speech, and Language Processing","language":[{"iso":"eng"}],"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"],"user_id":"44006","department":[{"_id":"54"}],"_id":"11861","citation":{"short":"V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE/ACM Transactions on Audio, Speech, and Language Processing 22 (2014) 95–109.","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} }","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>.","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>","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>","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.","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>."},"page":"95-109","intvolume":"        22","year":"2014","issue":"1","publication_identifier":{"issn":["2329-9290"]},"doi":"10.1109/TASLP.2013.2285480","title":"A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech","date_created":"2019-07-12T05:29:41Z","author":[{"full_name":"Leutnant, Volker","last_name":"Leutnant","first_name":"Volker"},{"first_name":"Alexander","full_name":"Krueger, Alexander","last_name":"Krueger"},{"last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","id":"242","first_name":"Reinhold"}],"volume":22,"date_updated":"2022-01-06T06:51:11Z"},{"title":"Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments","doi":"10.1016/j.sna.2013.01.008","date_updated":"2022-01-06T07:04:20Z","date_created":"2019-05-13T13:51:59Z","author":[{"full_name":"Al-Ashtari, Waleed","last_name":"Al-Ashtari","first_name":"Waleed"},{"last_name":"Hunstig","full_name":"Hunstig, Matthias","first_name":"Matthias"},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"first_name":"Walter","id":"21220","full_name":"Sextro, Walter","last_name":"Sextro"}],"volume":200,"year":"2013","citation":{"apa":"Al-Ashtari, W., Hunstig, M., Hemsel, T., &#38; Sextro, W. (2013). Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments. <i>Sensors and Actuators A: Physical</i>, <i>200</i>, 138–146. <a href=\"https://doi.org/10.1016/j.sna.2013.01.008\">https://doi.org/10.1016/j.sna.2013.01.008</a>","short":"W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A: Physical 200 (2013) 138–146.","mla":"Al-Ashtari, Waleed, et al. “Enhanced Energy Harvesting Using Multiple Piezoelectric Elements: Theory and Experiments.” <i>Sensors and Actuators A: Physical</i>, vol. 200, 2013, pp. 138–46, doi:<a href=\"https://doi.org/10.1016/j.sna.2013.01.008\">10.1016/j.sna.2013.01.008</a>.","bibtex":"@article{Al-Ashtari_Hunstig_Hemsel_Sextro_2013, title={Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments}, volume={200}, DOI={<a href=\"https://doi.org/10.1016/j.sna.2013.01.008\">10.1016/j.sna.2013.01.008</a>}, journal={Sensors and Actuators A: Physical}, author={Al-Ashtari, Waleed and Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={138–146} }","ieee":"W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments,” <i>Sensors and Actuators A: Physical</i>, vol. 200, pp. 138–146, 2013.","chicago":"Al-Ashtari, Waleed, Matthias Hunstig, Tobias Hemsel, and Walter Sextro. “Enhanced Energy Harvesting Using Multiple Piezoelectric Elements: Theory and Experiments.” <i>Sensors and Actuators A: Physical</i> 200 (2013): 138–46. <a href=\"https://doi.org/10.1016/j.sna.2013.01.008\">https://doi.org/10.1016/j.sna.2013.01.008</a>.","ama":"Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments. <i>Sensors and Actuators A: Physical</i>. 2013;200:138-146. doi:<a href=\"https://doi.org/10.1016/j.sna.2013.01.008\">10.1016/j.sna.2013.01.008</a>"},"page":"138 - 146","intvolume":"       200","keyword":["Energy harvesting","Cantilever array","Bandwidth","Power increase"],"language":[{"iso":"eng"}],"_id":"9795","user_id":"55222","department":[{"_id":"151"}],"abstract":[{"lang":"eng","text":"Power and bandwidth of piezoelectric harvesters can be increased by using multiple piezoelectric elements in one harvester. In this contribution, a novel energy harvesting cantilever array with magnetic tuning including three piezoelectric bimorphs is investigated theoretically and experimentally, with a good agreement between model and experiment. Other than harvester designs proposed before, this array is easy to manufacture and insensitive to manufacturing tolerances because its optimum operation frequency can be re-adjusted after fabrication. Using the superposition principle, the Butterworth-Van Dyke model and a mechanical lumped parameters model, the generated voltage and current are determined analytically. Formulas for calculating the power generated by array harvesters with an arbitrary number of piezoelectric elements connected in series or in parallel are derived. It is shown that optimum harvester design must take both the connected load and the operating frequency into account. Strategies for connecting multiple bimorphs to increase the maximum generated power and/or enhance the bandwidth compared to a single bimorph harvester are investigated. For bandwidth enhancement it is essential that individual rectifiers are used for the bimorphs. An example with three bimorphs shows that, depending on the chosen tuning strategy, the power is increased by about 340\\% or the bandwidth is increased by about 500\\%, compared to one single bimorph."}],"status":"public","type":"journal_article","publication":"Sensors and Actuators A: Physical"},{"language":[{"iso":"eng"}],"keyword":["Bayes methods","compensation","error statistics","reverberation","speech recognition","Bayesian feature enhancement","background noise","clean speech feature vectors","compensation","connected digits recognition task","error statistics","memory requirements","noisy reverberant data","posteriori probability density function","recursive formulation","reverberant logarithmic mel power spectral coefficients","robust automatic speech recognition","signal-to-noise ratios","time-variant observation","word error rate reduction","Robust automatic speech recognition","model-based Bayesian feature enhancement","observation model for reverberant and noisy speech","recursive observation model"],"user_id":"44006","department":[{"_id":"54"}],"_id":"11862","status":"public","abstract":[{"lang":"eng","text":"In this contribution we extend a previously proposed Bayesian approach for the enhancement of reverberant logarithmic mel power spectral coefficients for robust automatic speech recognition to the additional compensation of background noise. A recently proposed observation model is employed whose time-variant observation error statistics are obtained as a side product of the inference of the a posteriori probability density function of the clean speech feature vectors. Further a reduction of the computational effort and the memory requirements are achieved by using a recursive formulation of the observation model. The performance of the proposed algorithms is first experimentally studied on a connected digits recognition task with artificially created noisy reverberant data. It is shown that the use of the time-variant observation error model leads to a significant error rate reduction at low signal-to-noise ratios compared to a time-invariant model. Further experiments were conducted on a 5000 word task recorded in a reverberant and noisy environment. A significant word error rate reduction was obtained demonstrating the effectiveness of the approach on real-world data."}],"type":"journal_article","publication":"IEEE Transactions on Audio, Speech, and Language Processing","doi":"10.1109/TASL.2013.2258013","title":"Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition","author":[{"first_name":"Volker","full_name":"Leutnant, Volker","last_name":"Leutnant"},{"full_name":"Krueger, Alexander","last_name":"Krueger","first_name":"Alexander"},{"full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_created":"2019-07-12T05:29:42Z","volume":21,"date_updated":"2022-01-06T06:51:11Z","citation":{"short":"V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language Processing 21 (2013) 1640–1652.","bibtex":"@article{Leutnant_Krueger_Haeb-Umbach_2013, title={Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition}, volume={21}, DOI={<a href=\"https://doi.org/10.1109/TASL.2013.2258013\">10.1109/TASL.2013.2258013</a>}, number={8}, journal={IEEE Transactions on Audio, Speech, and Language Processing}, author={Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2013}, pages={1640–1652} }","mla":"Leutnant, Volker, et al. “Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 21, no. 8, 2013, pp. 1640–52, doi:<a href=\"https://doi.org/10.1109/TASL.2013.2258013\">10.1109/TASL.2013.2258013</a>.","apa":"Leutnant, V., Krueger, A., &#38; Haeb-Umbach, R. (2013). Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, <i>21</i>(8), 1640–1652. <a href=\"https://doi.org/10.1109/TASL.2013.2258013\">https://doi.org/10.1109/TASL.2013.2258013</a>","chicago":"Leutnant, Volker, Alexander Krueger, and Reinhold Haeb-Umbach. “Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i> 21, no. 8 (2013): 1640–52. <a href=\"https://doi.org/10.1109/TASL.2013.2258013\">https://doi.org/10.1109/TASL.2013.2258013</a>.","ieee":"V. Leutnant, A. Krueger, and R. Haeb-Umbach, “Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition,” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 21, no. 8, pp. 1640–1652, 2013.","ama":"Leutnant V, Krueger A, Haeb-Umbach R. Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>. 2013;21(8):1640-1652. doi:<a href=\"https://doi.org/10.1109/TASL.2013.2258013\">10.1109/TASL.2013.2258013</a>"},"page":"1640-1652","intvolume":"        21","year":"2013","issue":"8"},{"citation":{"apa":"He, D., &#38; Müller, W. (2013). An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors. In H. Weghorn (Ed.), <i>Proceedings of the International Conference on Applied Computing (AC)</i>.","ama":"He D, Müller W. An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors. In: Weghorn H, ed. <i>Proceedings of the International Conference on Applied Computing (AC)</i>. ; 2013.","bibtex":"@inproceedings{He_Müller_2013, place={Fort Worth, Texas, USA}, title={An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors}, booktitle={Proceedings of the International Conference on Applied Computing (AC)}, author={He, Da and Müller, Wolfgang}, editor={Weghorn, Hans}, year={2013} }","mla":"He, Da, and Wolfgang Müller. “An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors.” <i>Proceedings of the International Conference on Applied Computing (AC)</i>, edited by Hans Weghorn, 2013.","short":"D. He, W. Müller, in: H. Weghorn (Ed.), Proceedings of the International Conference on Applied Computing (AC), Fort Worth, Texas, USA, 2013.","chicago":"He, Da, and Wolfgang Müller. “An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors.” In <i>Proceedings of the International Conference on Applied Computing (AC)</i>, edited by Hans Weghorn. Fort Worth, Texas, USA, 2013.","ieee":"D. He and W. Müller, “An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors,” in <i>Proceedings of the International Conference on Applied Computing (AC)</i>, 2013."},"place":"Fort Worth, Texas, USA","year":"2013","publication_identifier":{"isbn":["978-989-8533-20-3 "]},"title":"An Energy-Efficient Heuristic for Hard Real-Time System on Multi-Core Processors","date_created":"2023-01-16T12:12:58Z","author":[{"full_name":"He, Da","last_name":"He","first_name":"Da"},{"first_name":"Wolfgang","id":"16243","full_name":"Müller, Wolfgang","last_name":"Müller"}],"date_updated":"2023-01-16T12:15:44Z","status":"public","abstract":[{"text":"In the electronic system development, energy consumption is clearly becoming one of the most important design concerns. From the system level point of view, Dynamic Power Management (DPM) and Dynamic Voltage and Frequency Scaling (DVFS) are two mostly applied techniques to adjust the tradeoff between the performance and power dissipation at runtime. In this paper, we study the problem of combined application of both techniques with regard to hard real-time systems running on cluster-based multi-core processors. To optimize the processor energy consumption, a heuristic based on simulated annealing with efficient termination criterion is proposed. The experiment results show that the proposed algorithm outperforms the existing approaches in terms of the energy reduction. ","lang":"eng"}],"editor":[{"last_name":"Weghorn","full_name":"Weghorn, Hans","first_name":"Hans"}],"type":"conference","publication":"Proceedings of the International Conference on Applied Computing (AC)","language":[{"iso":"eng"}],"keyword":["Dynamic Power Management","Dynamic Voltage and Frequency Scaling","Hard Real-Time","Multi-core Processor"],"user_id":"5786","department":[{"_id":"672"}],"_id":"36920"},{"type":"journal_article","status":"public","_id":"41234","user_id":"48467","department":[{"_id":"306"}],"publication_status":"published","publication_identifier":{"issn":["2191-9097","2191-9089"]},"citation":{"apa":"Alex, H., Steinfeldt, N., Jähnisch, K., Bauer, M., &#38; Hübner, S. (2013). On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow. <i>Nanotechnology Reviews</i>, <i>3</i>(1), 99–110. <a href=\"https://doi.org/10.1515/ntrev-2012-0085\">https://doi.org/10.1515/ntrev-2012-0085</a>","short":"H. Alex, N. Steinfeldt, K. Jähnisch, M. Bauer, S. Hübner, Nanotechnology Reviews 3 (2013) 99–110.","mla":"Alex, Hannes, et al. “On the Selective Aerobic Oxidation of Benzyl Alcohol with Pd/Au-Nanoparticles in Batch and Flow.” <i>Nanotechnology Reviews</i>, vol. 3, no. 1, Walter de Gruyter GmbH, 2013, pp. 99–110, doi:<a href=\"https://doi.org/10.1515/ntrev-2012-0085\">10.1515/ntrev-2012-0085</a>.","bibtex":"@article{Alex_Steinfeldt_Jähnisch_Bauer_Hübner_2013, title={On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow}, volume={3}, DOI={<a href=\"https://doi.org/10.1515/ntrev-2012-0085\">10.1515/ntrev-2012-0085</a>}, number={1}, journal={Nanotechnology Reviews}, publisher={Walter de Gruyter GmbH}, author={Alex, Hannes and Steinfeldt, Norbert and Jähnisch, Klaus and Bauer, Matthias and Hübner, Sandra}, year={2013}, pages={99–110} }","ama":"Alex H, Steinfeldt N, Jähnisch K, Bauer M, Hübner S. On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow. <i>Nanotechnology Reviews</i>. 2013;3(1):99-110. doi:<a href=\"https://doi.org/10.1515/ntrev-2012-0085\">10.1515/ntrev-2012-0085</a>","ieee":"H. Alex, N. Steinfeldt, K. Jähnisch, M. Bauer, and S. Hübner, “On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow,” <i>Nanotechnology Reviews</i>, vol. 3, no. 1, pp. 99–110, 2013, doi: <a href=\"https://doi.org/10.1515/ntrev-2012-0085\">10.1515/ntrev-2012-0085</a>.","chicago":"Alex, Hannes, Norbert Steinfeldt, Klaus Jähnisch, Matthias Bauer, and Sandra Hübner. “On the Selective Aerobic Oxidation of Benzyl Alcohol with Pd/Au-Nanoparticles in Batch and Flow.” <i>Nanotechnology Reviews</i> 3, no. 1 (2013): 99–110. <a href=\"https://doi.org/10.1515/ntrev-2012-0085\">https://doi.org/10.1515/ntrev-2012-0085</a>."},"page":"99-110","intvolume":"         3","date_updated":"2023-01-31T14:52:30Z","author":[{"first_name":"Hannes","last_name":"Alex","full_name":"Alex, Hannes"},{"last_name":"Steinfeldt","full_name":"Steinfeldt, Norbert","first_name":"Norbert"},{"first_name":"Klaus","last_name":"Jähnisch","full_name":"Jähnisch, Klaus"},{"first_name":"Matthias","full_name":"Bauer, Matthias","id":"47241","last_name":"Bauer","orcid":"0000-0002-9294-6076"},{"first_name":"Sandra","last_name":"Hübner","full_name":"Hübner, Sandra"}],"volume":3,"doi":"10.1515/ntrev-2012-0085","publication":"Nanotechnology Reviews","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Nanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We, herein, report on the selective aerobic oxidation of benzyl alcohol catalyzed by unsupported Pd/Au and Pd NPs at atmospheric pressure. NPs of varying compositions were synthesized and characterized by UV/Vis spectroscopy, transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS). The NPs were tested in the model reaction regarding their catalytic activity, stability, and recyclability in batch and continuous procedure. Additionally, <jats:italic>in situ</jats:italic> extended X-ray absorption fine structure (EXAFS) measurements were performed in order to get insight in the process during NP catalysis.</jats:p>"}],"keyword":["Surfaces","Coatings and Films","Process Chemistry and Technology","Energy Engineering and Power Technology","Biomaterials","Medicine (miscellaneous)","Biotechnology"],"language":[{"iso":"eng"}],"issue":"1","year":"2013","publisher":"Walter de Gruyter GmbH","date_created":"2023-01-31T14:50:22Z","title":"On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow"},{"publication_identifier":{"issn":["0363-907X"]},"publication_status":"published","page":"452-458","intvolume":"        38","citation":{"apa":"Kasdorf, O., Vollbrecht, J., Ohms, B., Hilleringmann, U., Bock, H., &#38; Kitzerow, H.-S. (2013). Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator. <i>International Journal of Energy Research</i>, <i>38</i>(4), 452–458. <a href=\"https://doi.org/10.1002/er.3127\">https://doi.org/10.1002/er.3127</a>","bibtex":"@article{Kasdorf_Vollbrecht_Ohms_Hilleringmann_Bock_Kitzerow_2013, title={Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator}, volume={38}, DOI={<a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>}, number={4}, journal={International Journal of Energy Research}, publisher={Hindawi Limited}, author={Kasdorf, Olga and Vollbrecht, Joachim and Ohms, Benjamin and Hilleringmann, Ulrich and Bock, Harald and Kitzerow, Heinz-S.}, year={2013}, pages={452–458} }","mla":"Kasdorf, Olga, et al. “Enhanced Organic Light-Emitting Diode Based on a Columnar Liquid Crystal by Integration in a Microresonator.” <i>International Journal of Energy Research</i>, vol. 38, no. 4, Hindawi Limited, 2013, pp. 452–58, doi:<a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>.","short":"O. Kasdorf, J. Vollbrecht, B. Ohms, U. Hilleringmann, H. Bock, H.-S. Kitzerow, International Journal of Energy Research 38 (2013) 452–458.","ama":"Kasdorf O, Vollbrecht J, Ohms B, Hilleringmann U, Bock H, Kitzerow H-S. Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator. <i>International Journal of Energy Research</i>. 2013;38(4):452-458. doi:<a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>","ieee":"O. Kasdorf, J. Vollbrecht, B. Ohms, U. Hilleringmann, H. Bock, and H.-S. Kitzerow, “Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator,” <i>International Journal of Energy Research</i>, vol. 38, no. 4, pp. 452–458, 2013, doi: <a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>.","chicago":"Kasdorf, Olga, Joachim Vollbrecht, Benjamin Ohms, Ulrich Hilleringmann, Harald Bock, and Heinz-S. Kitzerow. “Enhanced Organic Light-Emitting Diode Based on a Columnar Liquid Crystal by Integration in a Microresonator.” <i>International Journal of Energy Research</i> 38, no. 4 (2013): 452–58. <a href=\"https://doi.org/10.1002/er.3127\">https://doi.org/10.1002/er.3127</a>."},"volume":38,"author":[{"first_name":"Olga","last_name":"Kasdorf","full_name":"Kasdorf, Olga"},{"first_name":"Joachim","full_name":"Vollbrecht, Joachim","last_name":"Vollbrecht"},{"full_name":"Ohms, Benjamin","last_name":"Ohms","first_name":"Benjamin"},{"last_name":"Hilleringmann","id":"20179","full_name":"Hilleringmann, Ulrich","first_name":"Ulrich"},{"full_name":"Bock, Harald","last_name":"Bock","first_name":"Harald"},{"full_name":"Kitzerow, Heinz-S.","last_name":"Kitzerow","first_name":"Heinz-S."}],"date_updated":"2023-03-22T10:15:46Z","doi":"10.1002/er.3127","type":"journal_article","status":"public","department":[{"_id":"59"}],"user_id":"20179","_id":"39485","alternative_title":["Resonant cavity-enhanced OLED based on a columnar liquid crystal"],"issue":"4","year":"2013","date_created":"2023-01-24T11:30:04Z","publisher":"Hindawi Limited","title":"Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator","publication":"International Journal of Energy Research","language":[{"iso":"eng"}],"keyword":["Energy Engineering and Power Technology","Fuel Technology","Nuclear Energy and Engineering","Renewable Energy","Sustainability and the Environment"]},{"publication":"International Journal of Energy Research","language":[{"iso":"eng"}],"keyword":["Energy Engineering and Power Technology","Fuel Technology","Nuclear Energy and Engineering","Renewable Energy","Sustainability and the Environment"],"year":"2013","issue":"4","title":"Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator","date_created":"2023-01-24T18:27:25Z","publisher":"Hindawi Limited","status":"public","type":"journal_article","alternative_title":["Resonant cavity-enhanced OLED based on a columnar liquid crystal"],"department":[{"_id":"59"}],"user_id":"20179","_id":"39707","intvolume":"        38","page":"452-458","citation":{"short":"O. Kasdorf, J. Vollbrecht, B. Ohms, U. Hilleringmann, H. Bock, H.-S. Kitzerow, International Journal of Energy Research 38 (2013) 452–458.","mla":"Kasdorf, Olga, et al. “Enhanced Organic Light-Emitting Diode Based on a Columnar Liquid Crystal by Integration in a Microresonator.” <i>International Journal of Energy Research</i>, vol. 38, no. 4, Hindawi Limited, 2013, pp. 452–58, doi:<a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>.","bibtex":"@article{Kasdorf_Vollbrecht_Ohms_Hilleringmann_Bock_Kitzerow_2013, title={Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator}, volume={38}, DOI={<a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>}, number={4}, journal={International Journal of Energy Research}, publisher={Hindawi Limited}, author={Kasdorf, Olga and Vollbrecht, Joachim and Ohms, Benjamin and Hilleringmann, Ulrich and Bock, Harald and Kitzerow, Heinz-Siegfried}, year={2013}, pages={452–458} }","apa":"Kasdorf, O., Vollbrecht, J., Ohms, B., Hilleringmann, U., Bock, H., &#38; Kitzerow, H.-S. 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Kasdorf, J. Vollbrecht, B. Ohms, U. Hilleringmann, H. Bock, and H.-S. Kitzerow, “Enhanced organic light-emitting diode based on a columnar liquid crystal by integration in a microresonator,” <i>International Journal of Energy Research</i>, vol. 38, no. 4, pp. 452–458, 2013, doi: <a href=\"https://doi.org/10.1002/er.3127\">10.1002/er.3127</a>."},"publication_identifier":{"issn":["0363-907X"]},"publication_status":"published","doi":"10.1002/er.3127","volume":38,"author":[{"first_name":"Olga","last_name":"Kasdorf","full_name":"Kasdorf, Olga"},{"last_name":"Vollbrecht","full_name":"Vollbrecht, Joachim","first_name":"Joachim"},{"last_name":"Ohms","full_name":"Ohms, Benjamin","first_name":"Benjamin"},{"first_name":"Ulrich","last_name":"Hilleringmann","id":"20179","full_name":"Hilleringmann, Ulrich"},{"full_name":"Bock, Harald","last_name":"Bock","first_name":"Harald"},{"id":"254","full_name":"Kitzerow, Heinz-Siegfried","last_name":"Kitzerow","first_name":"Heinz-Siegfried"}],"date_updated":"2023-03-22T10:33:48Z"},{"date_created":"2023-01-24T11:47:52Z","author":[{"last_name":"Jucá","full_name":"Jucá, S.C.S.","first_name":"S.C.S."},{"first_name":"P.C.M.","last_name":"Carvalho","full_name":"Carvalho, P.C.M."},{"first_name":"R.I.S.","last_name":"Pereira","full_name":"Pereira, R.I.S."},{"first_name":"Dmitry","full_name":"Petrov, Dmitry","id":"8282","last_name":"Petrov"},{"first_name":"Ulrich","full_name":"Hilleringmann, Ulrich","id":"20179","last_name":"Hilleringmann"}],"publisher":"AEDERMACP (European Association for the Development of Renewable Energies and Power Quality)","date_updated":"2026-02-24T19:09:44Z","doi":"10.24084/repqj11.425","title":"Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators","publication_status":"published","publication_identifier":{"issn":["2172-038X","2172-038X"]},"citation":{"apa":"Jucá, S. C. S., Carvalho, P. C. M., Pereira, R. I. S., Petrov, D., &#38; Hilleringmann, U. (2013). Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators. <i>Renewable Energy and Power Quality Journal</i>, 712–717. <a href=\"https://doi.org/10.24084/repqj11.425\">https://doi.org/10.24084/repqj11.425</a>","bibtex":"@article{Jucá_Carvalho_Pereira_Petrov_Hilleringmann_2013, title={Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators}, DOI={<a href=\"https://doi.org/10.24084/repqj11.425\">10.24084/repqj11.425</a>}, journal={Renewable Energy and Power Quality Journal}, publisher={AEDERMACP (European Association for the Development of Renewable Energies and Power Quality)}, author={Jucá, S.C.S. and Carvalho, P.C.M. and Pereira, R.I.S. and Petrov, Dmitry and Hilleringmann, Ulrich}, year={2013}, pages={712–717} }","short":"S.C.S. Jucá, P.C.M. Carvalho, R.I.S. Pereira, D. Petrov, U. Hilleringmann, Renewable Energy and Power Quality Journal (2013) 712–717.","mla":"Jucá, S. C. S., et al. “Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators.” <i>Renewable Energy and Power Quality Journal</i>, AEDERMACP (European Association for the Development of Renewable Energies and Power Quality), 2013, pp. 712–17, doi:<a href=\"https://doi.org/10.24084/repqj11.425\">10.24084/repqj11.425</a>.","ama":"Jucá SCS, Carvalho PCM, Pereira RIS, Petrov D, Hilleringmann U. Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators. <i>Renewable Energy and Power Quality Journal</i>. Published online 2013:712-717. doi:<a href=\"https://doi.org/10.24084/repqj11.425\">10.24084/repqj11.425</a>","chicago":"Jucá, S.C.S., P.C.M. Carvalho, R.I.S. Pereira, Dmitry Petrov, and Ulrich Hilleringmann. “Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators.” <i>Renewable Energy and Power Quality Journal</i>, 2013, 712–17. <a href=\"https://doi.org/10.24084/repqj11.425\">https://doi.org/10.24084/repqj11.425</a>.","ieee":"S. C. S. Jucá, P. C. M. Carvalho, R. I. S. Pereira, D. Petrov, and U. Hilleringmann, “Design and Implementation of a High Temperature Control Monitoring Applied to Micro Thermoelectric Generators,” <i>Renewable Energy and Power Quality Journal</i>, pp. 712–717, 2013, doi: <a href=\"https://doi.org/10.24084/repqj11.425\">10.24084/repqj11.425</a>."},"page":"712-717","year":"2013","user_id":"8282","department":[{"_id":"59"},{"_id":"977"}],"_id":"39507","language":[{"iso":"eng"}],"keyword":["Electrical and Electronic Engineering","Energy Engineering and Power Technology","Renewable Energy","Sustainability and the Environment"],"type":"journal_article","publication":"Renewable Energy and Power Quality Journal","status":"public"},{"related_material":{"link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2012/ChKrDaHa12_Talk.pdf","description":"Presentation","relation":"supplementary_material"}]},"citation":{"mla":"Chinaev, Aleksej, et al. “Improved Noise Power Spectral Density Tracking by a MAP-Based Postprocessor.” <i>37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)</i>, 2012.","bibtex":"@inproceedings{Chinaev_Krueger_Tran Vu_Haeb-Umbach_2012, title={Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor}, booktitle={37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)}, author={Chinaev, Aleksej and Krueger, Alexander and Tran Vu, Dang Hai and Haeb-Umbach, Reinhold}, year={2012} }","short":"A. Chinaev, A. Krueger, D.H. Tran Vu, R. Haeb-Umbach, in: 37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012), 2012.","apa":"Chinaev, A., Krueger, A., Tran Vu, D. H., &#38; Haeb-Umbach, R. (2012). Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor. In <i>37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)</i>.","ama":"Chinaev A, Krueger A, Tran Vu DH, Haeb-Umbach R. Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor. In: <i>37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)</i>. ; 2012.","chicago":"Chinaev, Aleksej, Alexander Krueger, Dang Hai Tran Vu, and Reinhold Haeb-Umbach. “Improved Noise Power Spectral Density Tracking by a MAP-Based Postprocessor.” In <i>37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)</i>, 2012.","ieee":"A. Chinaev, A. Krueger, D. H. Tran Vu, and R. Haeb-Umbach, “Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor,” in <i>37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)</i>, 2012."},"year":"2012","date_created":"2019-07-12T05:27:26Z","author":[{"full_name":"Chinaev, Aleksej","last_name":"Chinaev","first_name":"Aleksej"},{"first_name":"Alexander","last_name":"Krueger","full_name":"Krueger, Alexander"},{"first_name":"Dang Hai","last_name":"Tran Vu","full_name":"Tran Vu, Dang Hai"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_updated":"2022-01-06T06:51:08Z","oa":"1","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2012/ChKrDaHa12.pdf"}],"title":"Improved Noise Power Spectral Density Tracking by a MAP-based Postprocessor","type":"conference","publication":"37th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012)","status":"public","abstract":[{"lang":"eng","text":"In this paper we present a novel noise power spectral density tracking algorithm and its use in single-channel speech enhancement. It has the unique feature that it is able to track the noise statistics even if speech is dominant in a given time-frequency bin. As a consequence it can follow non-stationary noise superposed by speech, even in the critical case of rising noise power. The algorithm requires an initial estimate of the power spectrum of speech and is thus meant to be used as a postprocessor to a first speech enhancement stage. An experimental comparison with a state-of-the-art noise tracking algorithm demonstrates lower estimation errors under low SNR conditions and smaller fluctuations of the estimated values, resulting in improved speech quality as measured by PESQ scores."}],"user_id":"44006","department":[{"_id":"54"}],"_id":"11745","language":[{"iso":"eng"}],"keyword":["MAP parameter estimation","noise power estimation","speech enhancement"]},{"language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy","Energy Engineering and Power Technology","Fuel Technology","General Chemical Engineering","General Chemistry"],"user_id":"94996","_id":"32476","status":"public","publication":"Combustion, Explosion, and Shock Waves","type":"journal_article","doi":"10.1134/s0010508212050097","title":"Reducing the flammability of ultra-high-molecular-weight polyethylene by triphenyl phosphate additives","volume":48,"author":[{"full_name":"Gonchikzhapov, M. B.","last_name":"Gonchikzhapov","first_name":"M. B."},{"first_name":"A. A.","full_name":"Paletsky, A. A.","last_name":"Paletsky"},{"last_name":"Kuibida","full_name":"Kuibida, L. V.","first_name":"L. V."},{"full_name":"Shundrina, I. K.","last_name":"Shundrina","first_name":"I. K."},{"first_name":"O. P.","full_name":"Korobeinichev, O. P.","last_name":"Korobeinichev"}],"date_created":"2022-08-02T10:19:00Z","publisher":"Pleiades Publishing Ltd","date_updated":"2022-08-15T13:54:54Z","intvolume":"        48","page":"579-589","citation":{"bibtex":"@article{Gonchikzhapov_Paletsky_Kuibida_Shundrina_Korobeinichev_2012, title={Reducing the flammability of ultra-high-molecular-weight polyethylene by triphenyl phosphate additives}, volume={48}, DOI={<a href=\"https://doi.org/10.1134/s0010508212050097\">10.1134/s0010508212050097</a>}, number={5}, journal={Combustion, Explosion, and Shock Waves}, publisher={Pleiades Publishing Ltd}, author={Gonchikzhapov, M. B. and Paletsky, A. A. and Kuibida, L. V. and Shundrina, I. K. and Korobeinichev, O. P.}, year={2012}, pages={579–589} }","short":"M.B. Gonchikzhapov, A.A. Paletsky, L.V. Kuibida, I.K. Shundrina, O.P. Korobeinichev, Combustion, Explosion, and Shock Waves 48 (2012) 579–589.","mla":"Gonchikzhapov, M. B., et al. “Reducing the Flammability of Ultra-High-Molecular-Weight Polyethylene by Triphenyl Phosphate Additives.” <i>Combustion, Explosion, and Shock Waves</i>, vol. 48, no. 5, Pleiades Publishing Ltd, 2012, pp. 579–89, doi:<a href=\"https://doi.org/10.1134/s0010508212050097\">10.1134/s0010508212050097</a>.","apa":"Gonchikzhapov, M. B., Paletsky, A. A., Kuibida, L. V., Shundrina, I. K., &#38; Korobeinichev, O. P. (2012). Reducing the flammability of ultra-high-molecular-weight polyethylene by triphenyl phosphate additives. <i>Combustion, Explosion, and Shock Waves</i>, <i>48</i>(5), 579–589. <a href=\"https://doi.org/10.1134/s0010508212050097\">https://doi.org/10.1134/s0010508212050097</a>","chicago":"Gonchikzhapov, M. B., A. A. Paletsky, L. V. Kuibida, I. K. Shundrina, and O. P. Korobeinichev. “Reducing the Flammability of Ultra-High-Molecular-Weight Polyethylene by Triphenyl Phosphate Additives.” <i>Combustion, Explosion, and Shock Waves</i> 48, no. 5 (2012): 579–89. <a href=\"https://doi.org/10.1134/s0010508212050097\">https://doi.org/10.1134/s0010508212050097</a>.","ieee":"M. B. Gonchikzhapov, A. A. Paletsky, L. V. Kuibida, I. K. Shundrina, and O. P. Korobeinichev, “Reducing the flammability of ultra-high-molecular-weight polyethylene by triphenyl phosphate additives,” <i>Combustion, Explosion, and Shock Waves</i>, vol. 48, no. 5, pp. 579–589, 2012, doi: <a href=\"https://doi.org/10.1134/s0010508212050097\">10.1134/s0010508212050097</a>.","ama":"Gonchikzhapov MB, Paletsky AA, Kuibida LV, Shundrina IK, Korobeinichev OP. Reducing the flammability of ultra-high-molecular-weight polyethylene by triphenyl phosphate additives. <i>Combustion, Explosion, and Shock Waves</i>. 2012;48(5):579-589. doi:<a href=\"https://doi.org/10.1134/s0010508212050097\">10.1134/s0010508212050097</a>"},"year":"2012","issue":"5","publication_identifier":{"issn":["0010-5082","1573-8345"]},"publication_status":"published"},{"keyword":["acoustical transfer function ratio","adaptive eigenvector tracking","array signal processing","beamformer design","blocking matrix","eigenvalues and eigenfunctions","eigenvector-based transfer function ratios estimation","generalized sidelobe canceler","interference reduction","iterative methods","power iteration method","reduced speech distortions","reverberant enclosure","reverberation","speech enhancement","stationary noise"],"language":[{"iso":"eng"}],"publication":"IEEE Transactions on Audio, Speech, and Language Processing","abstract":[{"lang":"eng","text":"In this paper, we present a novel blocking matrix and fixed beamformer design for a generalized sidelobe canceler for speech enhancement in a reverberant enclosure. They are based on a new method for estimating the acoustical transfer function ratios in the presence of stationary noise. The estimation method relies on solving a generalized eigenvalue problem in each frequency bin. An adaptive eigenvector tracking utilizing the power iteration method is employed and shown to achieve a high convergence speed. Simulation results demonstrate that the proposed beamformer leads to better noise and interference reduction and reduced speech distortions compared to other blocking matrix designs from the literature."}],"date_created":"2019-07-12T05:29:28Z","title":"Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation","issue":"1","year":"2011","_id":"11850","user_id":"44006","department":[{"_id":"54"}],"type":"journal_article","status":"public","date_updated":"2022-01-06T06:51:11Z","oa":"1","author":[{"first_name":"Alexander","full_name":"Krueger, Alexander","last_name":"Krueger"},{"full_name":"Warsitz, Ernst","last_name":"Warsitz","first_name":"Ernst"},{"first_name":"Reinhold","last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold"}],"volume":19,"main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2011/KrWaHa11.pdf"}],"doi":"10.1109/TASL.2010.2047324","citation":{"apa":"Krueger, A., Warsitz, E., &#38; Haeb-Umbach, R. (2011). Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, <i>19</i>(1), 206–219. <a href=\"https://doi.org/10.1109/TASL.2010.2047324\">https://doi.org/10.1109/TASL.2010.2047324</a>","bibtex":"@article{Krueger_Warsitz_Haeb-Umbach_2011, title={Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation}, volume={19}, DOI={<a href=\"https://doi.org/10.1109/TASL.2010.2047324\">10.1109/TASL.2010.2047324</a>}, number={1}, journal={IEEE Transactions on Audio, Speech, and Language Processing}, author={Krueger, Alexander and Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2011}, pages={206–219} }","mla":"Krueger, Alexander, et al. “Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 19, no. 1, 2011, pp. 206–19, doi:<a href=\"https://doi.org/10.1109/TASL.2010.2047324\">10.1109/TASL.2010.2047324</a>.","short":"A. Krueger, E. Warsitz, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language Processing 19 (2011) 206–219.","ama":"Krueger A, Warsitz E, Haeb-Umbach R. Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>. 2011;19(1):206-219. doi:<a href=\"https://doi.org/10.1109/TASL.2010.2047324\">10.1109/TASL.2010.2047324</a>","ieee":"A. Krueger, E. Warsitz, and R. Haeb-Umbach, “Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation,” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 19, no. 1, pp. 206–219, 2011.","chicago":"Krueger, Alexander, Ernst Warsitz, and Reinhold Haeb-Umbach. “Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i> 19, no. 1 (2011): 206–19. <a href=\"https://doi.org/10.1109/TASL.2010.2047324\">https://doi.org/10.1109/TASL.2010.2047324</a>."},"page":"206-219","intvolume":"        19"},{"issue":"4","quality_controlled":"1","publication_identifier":{"issn":["1948-5719"]},"page":"918-923","intvolume":"        57","citation":{"chicago":"Ageba, Ryo, Yoichi Kadota, Takafumi Maeda, Norihito Takiguchi, Takeshi Morita, Mutsuo Ishikawa, Peter Bornmann, and Tobias Hemsel. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 918–23. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>.","ieee":"R. Ageba <i>et al.</i>, “Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 918–923, 2010.","ama":"Ageba R, Kadota Y, Maeda T, et al. Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>. 2010;57(4):918-923. doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>","mla":"Ageba, Ryo, et al. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 918–23, doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>.","bibtex":"@article{Ageba_Kadota_Maeda_Takiguchi_Morita_Ishikawa_Bornmann_Hemsel_2010, title={Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Ageba, Ryo and Kadota, Yoichi and Maeda, Takafumi and Takiguchi, Norihito and Morita, Takeshi and Ishikawa, Mutsuo and Bornmann, Peter and Hemsel, Tobias}, year={2010}, pages={918–923} }","short":"R. Ageba, Y. Kadota, T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, P. Bornmann, T. Hemsel, Journal of Korean Physical Society 57 (2010) 918–923.","apa":"Ageba, R., Kadota, Y., Maeda, T., Takiguchi, N., Morita, T., Ishikawa, M., … Hemsel, T. (2010). Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 918–923. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>"},"year":"2010","volume":57,"date_created":"2019-05-13T09:35:33Z","author":[{"last_name":"Ageba","full_name":"Ageba, Ryo","first_name":"Ryo"},{"first_name":"Yoichi","full_name":"Kadota, Yoichi","last_name":"Kadota"},{"full_name":"Maeda, Takafumi","last_name":"Maeda","first_name":"Takafumi"},{"first_name":"Norihito","last_name":"Takiguchi","full_name":"Takiguchi, Norihito"},{"first_name":"Takeshi","last_name":"Morita","full_name":"Morita, Takeshi"},{"first_name":"Mutsuo","full_name":"Ishikawa, Mutsuo","last_name":"Ishikawa"},{"full_name":"Bornmann, Peter","last_name":"Bornmann","first_name":"Peter"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel"}],"date_updated":"2022-01-06T07:04:19Z","doi":"10.3938/jkps.57.918","title":"Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis","publication":"Journal of Korean Physical Society","type":"journal_article","status":"public","abstract":[{"text":"The hydrothermal method enables the production of high-quality piezoelectric materials. In this study, we propose to irradiate the reaction solutions with ultrasonic power during the hydrothermal method to obtain a shorter reaction time and a smooth film surface. A high-pressure reaction container for the ultrasonic transducer was newly developed, and the ultrasonically-assisted hydrothermal method was examined by using this container. The effect of ultrasonic assist on the synthesis of lead-zirconate-titanate (PZT) thin films and (K,Na)NbO$_{3}$ powders was verified. Thicker PZT film, thickness around 10 ${\\mu}$m, could be obtained in one process, and (K,Na)NbO$_{3}$ powder was synthesized in half the previous reaction time.","lang":"eng"}],"department":[{"_id":"151"}],"user_id":"55222","_id":"9743","language":[{"iso":"eng"}],"keyword":["Hydrothermal method","High-power ultrasonic","PZT thin film","Lead-free piezoelectric materials"]},{"abstract":[{"text":"In this paper, we present a new technique for automatic speech recognition (ASR) in reverberant environments. Our approach is aimed at the enhancement of the logarithmic Mel power spectrum, which is computed at an intermediate stage to obtain the widely used Mel frequency cepstral coefficients (MFCCs). Given the reverberant logarithmic Mel power spectral coefficients (LMPSCs), a minimum mean square error estimate of the clean LMPSCs is computed by carrying out Bayesian inference. We employ switching linear dynamical models as an a priori model for the dynamics of the clean LMPSCs. Further, we derive a stochastic observation model which relates the clean to the reverberant LMPSCs through a simplified model of the room impulse response (RIR). This model requires only two parameters, namely RIR energy and reverberation time, which can be estimated from the captured microphone signal. The performance of the proposed enhancement technique is studied on the AURORA5 database and compared to that of constrained maximum-likelihood linear regression (CMLLR). It is shown by experimental results that our approach significantly outperforms CMLLR and that up to 80\\% of the errors caused by the reverberation are recovered. In addition to the fact that the approach is compatible with the standard MFCC feature vectors, it leaves the ASR back-end unchanged. It is of moderate computational complexity and suitable for real time applications.","lang":"eng"}],"publication":"IEEE Transactions on Audio, Speech, and Language Processing","language":[{"iso":"eng"}],"keyword":["ASR","AURORA5 database","automatic speech recognition","Bayesian inference","belief networks","CMLLR","computational complexity","constrained maximum likelihood linear regression","least mean squares methods","LMPSC computation","logarithmic Mel power spectrum","maximum likelihood estimation","Mel frequency cepstral coefficients","MFCC feature vectors","microphone signal","minimum mean square error estimation","model-based feature enhancement","regression analysis","reverberant speech recognition","reverberation","RIR energy","room impulse response","speech recognition","stochastic observation model","stochastic processes"],"year":"2010","issue":"7","title":"Model-Based Feature Enhancement for Reverberant Speech Recognition","date_created":"2019-07-12T05:29:23Z","status":"public","type":"journal_article","department":[{"_id":"54"}],"user_id":"44006","_id":"11846","intvolume":"        18","page":"1692-1707","citation":{"ama":"Krueger A, Haeb-Umbach R. Model-Based Feature Enhancement for Reverberant Speech Recognition. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>. 2010;18(7):1692-1707. doi:<a href=\"https://doi.org/10.1109/TASL.2010.2049684\">10.1109/TASL.2010.2049684</a>","chicago":"Krueger, Alexander, and Reinhold Haeb-Umbach. “Model-Based Feature Enhancement for Reverberant Speech Recognition.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i> 18, no. 7 (2010): 1692–1707. <a href=\"https://doi.org/10.1109/TASL.2010.2049684\">https://doi.org/10.1109/TASL.2010.2049684</a>.","ieee":"A. Krueger and R. Haeb-Umbach, “Model-Based Feature Enhancement for Reverberant Speech Recognition,” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 18, no. 7, pp. 1692–1707, 2010.","mla":"Krueger, Alexander, and Reinhold Haeb-Umbach. “Model-Based Feature Enhancement for Reverberant Speech Recognition.” <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, vol. 18, no. 7, 2010, pp. 1692–707, doi:<a href=\"https://doi.org/10.1109/TASL.2010.2049684\">10.1109/TASL.2010.2049684</a>.","short":"A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language Processing 18 (2010) 1692–1707.","bibtex":"@article{Krueger_Haeb-Umbach_2010, title={Model-Based Feature Enhancement for Reverberant Speech Recognition}, volume={18}, DOI={<a href=\"https://doi.org/10.1109/TASL.2010.2049684\">10.1109/TASL.2010.2049684</a>}, number={7}, journal={IEEE Transactions on Audio, Speech, and Language Processing}, author={Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2010}, pages={1692–1707} }","apa":"Krueger, A., &#38; Haeb-Umbach, R. (2010). Model-Based Feature Enhancement for Reverberant Speech Recognition. <i>IEEE Transactions on Audio, Speech, and Language Processing</i>, <i>18</i>(7), 1692–1707. <a href=\"https://doi.org/10.1109/TASL.2010.2049684\">https://doi.org/10.1109/TASL.2010.2049684</a>"},"doi":"10.1109/TASL.2010.2049684","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2010/KrHa10.pdf","open_access":"1"}],"volume":18,"author":[{"first_name":"Alexander","last_name":"Krueger","full_name":"Krueger, Alexander"},{"last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"}],"date_updated":"2022-01-06T06:51:11Z","oa":"1"}]