[{"conference":{"start_date":"2021-03-08","name":"Pre-Conference 16. International Congress on Wirtschaftsinformatik Universität Duisburg-Essen","end_date":"2021-03-11"},"author":[{"first_name":"Jonas","last_name":"Kirchhoff","full_name":"Kirchhoff, Jonas","id":"39928"},{"last_name":"Burmeister","first_name":"Sascha Christian","full_name":"Burmeister, Sascha Christian","id":"32685"},{"last_name":"Weskamp","first_name":"Christoph","full_name":"Weskamp, Christoph"},{"id":"107","full_name":"Engels, Gregor","last_name":"Engels","first_name":"Gregor"}],"year":"2021","title":"Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning","status":"public","date_updated":"2022-04-30T13:48:49Z","_id":"21093","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://oops.uni-oldenburg.de/5084/7/proceedings_ow_sto_2021.pdf#page=41","open_access":"1"}],"editor":[{"last_name":"Breitner","first_name":"Michael H.","full_name":"Breitner, Michael H."},{"first_name":"Sebastian","last_name":"Lehnhoff","full_name":"Lehnhoff, Sebastian"},{"full_name":"Nieße, Astrid","last_name":"Nieße","first_name":"Astrid"},{"last_name":"Staudt","first_name":"Philipp","full_name":"Staudt, Philipp"},{"full_name":"Weinhardt, Christof","last_name":"Weinhardt","first_name":"Christof"},{"first_name":"Oliver","last_name":"Werth","full_name":"Werth, Oliver"}],"user_id":"39928","citation":{"bibtex":"@inproceedings{Kirchhoff_Burmeister_Weskamp_Engels_2021, title={Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning}, booktitle={Energy Informatics and Electro Mobility ICT}, author={Kirchhoff, Jonas and Burmeister, Sascha Christian and Weskamp, Christoph and Engels, Gregor}, editor={Breitner, Michael H. and Lehnhoff, Sebastian and Nieße, Astrid and Staudt, Philipp and Weinhardt, Christof and Werth, Oliver}, year={2021} }","ama":"Kirchhoff J, Burmeister SC, Weskamp C, Engels G. Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning. In: Breitner MH, Lehnhoff S, Nieße A, Staudt P, Weinhardt C, Werth O, eds. <i>Energy Informatics and Electro Mobility ICT</i>. ; 2021.","mla":"Kirchhoff, Jonas, et al. “Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning.” <i>Energy Informatics and Electro Mobility ICT</i>, edited by Michael H. Breitner et al., 2021.","short":"J. Kirchhoff, S.C. Burmeister, C. Weskamp, G. Engels, in: M.H. Breitner, S. Lehnhoff, A. Nieße, P. Staudt, C. Weinhardt, O. Werth (Eds.), Energy Informatics and Electro Mobility ICT, 2021.","chicago":"Kirchhoff, Jonas, Sascha Christian Burmeister, Christoph Weskamp, and Gregor Engels. “Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning.” In <i>Energy Informatics and Electro Mobility ICT</i>, edited by Michael H. Breitner, Sebastian Lehnhoff, Astrid Nieße, Philipp Staudt, Christof Weinhardt, and Oliver Werth, 2021.","ieee":"J. Kirchhoff, S. C. Burmeister, C. Weskamp, and G. Engels, “Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning,” in <i>Energy Informatics and Electro Mobility ICT</i>, 2021.","apa":"Kirchhoff, J., Burmeister, S. C., Weskamp, C., &#38; Engels, G. (2021). Towards a Decision Support System for Cross-Sectoral Energy Distribution Network Planning. In M. H. Breitner, S. Lehnhoff, A. Nieße, P. Staudt, C. Weinhardt, &#38; O. Werth (Eds.), <i>Energy Informatics and Electro Mobility ICT</i>."},"publication":"Energy Informatics and Electro Mobility ICT","abstract":[{"text":"Requirements for energy distribution networks are changing fast due to the growing share of renewable energy, increasing electrification, and novel consumer and asset technologies. Since uncertainties about future developments increase planning difficulty, flexibility potentials such as synergies between the electricity, gas, heat, and transport sector often remain unused. In this paper, we therefore present a novel module-based concept for a decision support system that helps distribution network planners to identify cross-sectoral synergies and to select optimal network assets such as transformers, cables, pipes, energy storage systems or energy conversion technology. The concept enables long-term transformation plans and supports distribution network planners in designing reliable, sustainable and cost-efficient distribution networks for future demands.","lang":"eng"}],"date_created":"2021-01-28T10:05:44Z","oa":"1","department":[{"_id":"534"},{"_id":"66"},{"_id":"277"}],"type":"conference"},{"author":[{"first_name":"Raphael","last_name":"Gerlach","full_name":"Gerlach, Raphael","id":"32655"}],"status":"public","year":"2021","title":"The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems","date_updated":"2022-06-20T13:40:30Z","language":[{"iso":"eng"}],"_id":"32057","main_file_link":[{"open_access":"1","url":"https://digital.ub.uni-paderborn.de/hs/download/pdf/6214949"}],"doi":"10.17619/UNIPB/1-1278","user_id":"32643","supervisor":[{"first_name":"Michael","last_name":"Dellnitz ","full_name":"Dellnitz , Michael"},{"full_name":"Koltai, Péter","first_name":"Péter","last_name":"Koltai"}],"citation":{"ieee":"R. Gerlach, <i>The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems</i>. 2021.","apa":"Gerlach, R. (2021). <i>The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-1278\">https://doi.org/10.17619/UNIPB/1-1278</a>","short":"R. Gerlach, The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems, 2021.","chicago":"Gerlach, Raphael. <i>The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems</i>, 2021. <a href=\"https://doi.org/10.17619/UNIPB/1-1278\">https://doi.org/10.17619/UNIPB/1-1278</a>.","mla":"Gerlach, Raphael. <i>The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems</i>. 2021, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1278\">10.17619/UNIPB/1-1278</a>.","bibtex":"@book{Gerlach_2021, title={The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-1278\">10.17619/UNIPB/1-1278</a>}, author={Gerlach, Raphael}, year={2021} }","ama":"Gerlach R. <i>The Computation and Analysis of Invariant Sets of Infinite-Dimensional Systems</i>.; 2021. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1278\">10.17619/UNIPB/1-1278</a>"},"abstract":[{"text":"Ein zentraler Aspekt bei der Untersuchung dynamischer Systeme ist die Analyse ihrer invarianten Mengen wie des globalen Attraktors und (in)stabiler Mannigfaltigkeiten. Insbesondere wenn das zugrunde liegende System von einem Parameter abhängt, ist es entscheidend, sie im Bezug auf diesen Parameter effizient zu verfolgen. Für die Berechnung invarianter Mengen stützen wir uns für ihre Approximation auf numerische Algorithmen. Typischerweise können diese Methoden jedoch nur auf endlich-dimensionale dynamische Systeme angewendet werden. In dieser Arbeit präsentieren wir daher einen numerischen Rahmen für die globale dynamische Analyse unendlich-dimensionaler Systeme. Wir werden Einbettungstechniken verwenden, um das core dynamical system (CDS) zu definieren, welches ein dynamisch äquivalentes endlich-dimensionales System ist.Das CDS wird dann verwendet, um eingebettete invariante Mengen, also eins-zu-eins Bilder, mittels Mengen-orientierten numerischen Methoden zu approximieren. Bei der Konstruktion des CDS ist es entscheidend, eine geeignete Beobachtungsabbildung auszuwählen und die geeignete inverse Abbildung zu entwerfen. Dazu werden wir geeignete numerische Implementierungen des CDS für DDEs und PDEs vorstellen. Für eine nachfolgende geometrische Analyse der eingebetteten invarianten Menge betrachten wir eine Lerntechnik namens diffusion maps, die ihre intrinsische Geometrie enthüllt sowie ihre Dimension schätzt. Schließlich wenden wir unsere entwickelten numerischen Methoden an einigen bekannten unendlich-dimensionale dynamischen Systeme an, wie die Mackey-Glass-Gleichung, die Kuramoto-Sivashinsky-Gleichung und die Navier-Stokes-Gleichung.","lang":"ger"},{"lang":"eng","text":"One central aspect in the study of dynamical systems is the analysis of its invariant sets such as the global attractor and (un)stable manifolds. In particular, when the underlying system depends on a parameter it is crucial to efficiently track those set with respect to this parameter. For the computation of invariant sets we rely on numerical algorithms for their approximation but typically those tools can only be applied to finite-dimensional dynamical systems. Thus, in thesis we present a numerical framework for the global dynamical analysis of infinite-dimensional systems. We will use embedding techniques for the definition of the core dynamical system (CDS) which is a dynamically equivalent finite-dimensional system. The CDS is then used for the approximation of related embedded invariant sets, i.e, one-to-one images, by set-oriented numerical methods. For the construction of the CDS it is crucial to choose an appropriate observation map and to design its corresponding inverse. Therefore, we will present suitable numerical realizations of the CDS for DDEs and PDEs. For a subsequent geometric analysis of the embedded invariant set we will consider a manifold learning technique called diffusion maps which reveals its intrinsic geometry and estimates its dimension. Finally, we apply our develop numerical tools on some well-known infinite-dimensional dynamical systems such as the Mackey-Glass equation, the Kuramoto-Sivashinsky equation and the Navier-Stokes equation."}],"date_created":"2022-06-20T09:54:24Z","oa":"1","department":[{"_id":"101"}],"type":"dissertation"},{"issue":"6","publication":"Journal of Symplectic Geometry","date_created":"2022-06-20T08:46:56Z","type":"journal_article","department":[{"_id":"548"}],"title":"Asymptotic expansion of generalized Witten integrals for Hamiltonian circle actions","year":"2021","author":[{"id":"70575","full_name":"Delarue, Benjamin","first_name":"Benjamin","last_name":"Delarue"},{"first_name":"Pablo","last_name":"Ramacher","full_name":"Ramacher, Pablo"}],"publication_identifier":{"unknown":["1540-2347","1527-5256"]},"date_updated":"2022-06-21T11:54:50Z","publication_status":"published","intvolume":"        19","article_type":"original","language":[{"iso":"eng"}],"doi":"10.4310/JSG.2021.v19.n6.a1","citation":{"ieee":"B. Delarue and P. Ramacher, “Asymptotic expansion of generalized Witten integrals for Hamiltonian circle actions,” <i>Journal of Symplectic Geometry</i>, vol. 19, no. 6, pp. 1281–1337, 2021, doi: <a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">10.4310/JSG.2021.v19.n6.a1</a>.","apa":"Delarue, B., &#38; Ramacher, P. (2021). Asymptotic expansion of generalized Witten integrals for Hamiltonian circle actions. <i>Journal of Symplectic Geometry</i>, <i>19</i>(6), 1281–1337. <a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">https://doi.org/10.4310/JSG.2021.v19.n6.a1</a>","chicago":"Delarue, Benjamin, and Pablo Ramacher. “Asymptotic Expansion of Generalized Witten Integrals for Hamiltonian Circle Actions.” <i>Journal of Symplectic Geometry</i> 19, no. 6 (2021): 1281–1337. <a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">https://doi.org/10.4310/JSG.2021.v19.n6.a1</a>.","short":"B. Delarue, P. Ramacher, Journal of Symplectic Geometry 19 (2021) 1281–1337.","mla":"Delarue, Benjamin, and Pablo Ramacher. “Asymptotic Expansion of Generalized Witten Integrals for Hamiltonian Circle Actions.” <i>Journal of Symplectic Geometry</i>, vol. 19, no. 6, 2021, pp. 1281–337, doi:<a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">10.4310/JSG.2021.v19.n6.a1</a>.","bibtex":"@article{Delarue_Ramacher_2021, title={Asymptotic expansion of generalized Witten integrals for Hamiltonian circle actions}, volume={19}, DOI={<a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">10.4310/JSG.2021.v19.n6.a1</a>}, number={6}, journal={Journal of Symplectic Geometry}, author={Delarue, Benjamin and Ramacher, Pablo}, year={2021}, pages={1281–1337} }","ama":"Delarue B, Ramacher P. Asymptotic expansion of generalized Witten integrals for Hamiltonian circle actions. <i>Journal of Symplectic Geometry</i>. 2021;19(6):1281-1337. doi:<a href=\"https://doi.org/10.4310/JSG.2021.v19.n6.a1\">10.4310/JSG.2021.v19.n6.a1</a>"},"status":"public","page":"1281 - 1337","_id":"32016","user_id":"70575","volume":19},{"abstract":[{"text":"Fault coverage analysis and fault simulation are well-established methods for the qualification of test vectors in hardware design. However, their role in virtual prototyping and the correlation to later steps in the design process need further investigation. We introduce a metric for RISC-V instruction and register coverage for binary software. The metric measures if RISC-V instruction types are executed and if GPRs, CSRs, and FPRs are accessed. The analysis is applied by the means of a virtual prototype which is based on an abstract instruction and register model with direct correspondence to their bit level representation. In this context, we analyzed three different openly available test suites: the RISC-V architectural testing framework, the RISC-V unit tests, and programs which are automatically generated by the RISC-V Torture test generator. We discuss their tradeoffs and show that by combining them to a unified test suite we can arrive at a 100% GPR and FPR register coverage and a 98.7% instruction type coverage.","lang":"eng"}],"related_material":{"link":[{"url":"https://ieeexplore.ieee.org/document/9399723","relation":"confirmation"}]},"citation":{"short":"P. Adelt, B. Koppelmann, W. Müller, C. Scheytt, in: MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop, VDE, Munich, DE, 2021.","chicago":"Adelt, Peer, Bastian Koppelmann, Wolfgang Müller, and Christoph Scheytt. “Register and Instruction Coverage Analysis for Different RISC-V ISA Modules.” In <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>. Munich, DE: VDE, 2021.","apa":"Adelt, P., Koppelmann, B., Müller, W., &#38; Scheytt, C. (2021). Register and Instruction Coverage Analysis for Different RISC-V ISA Modules. <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>.","ieee":"P. Adelt, B. Koppelmann, W. Müller, and C. Scheytt, “Register and Instruction Coverage Analysis for Different RISC-V ISA Modules,” 2021.","ama":"Adelt P, Koppelmann B, Müller W, Scheytt C. Register and Instruction Coverage Analysis for Different RISC-V ISA Modules. In: <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>. VDE; 2021.","bibtex":"@inproceedings{Adelt_Koppelmann_Müller_Scheytt_2021, place={Munich, DE}, title={Register and Instruction Coverage Analysis for Different RISC-V ISA Modules}, booktitle={MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop}, publisher={VDE}, author={Adelt, Peer and Koppelmann, Bastian and Müller, Wolfgang and Scheytt, Christoph}, year={2021} }","mla":"Adelt, Peer, et al. “Register and Instruction Coverage Analysis for Different RISC-V ISA Modules.” <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>, VDE, 2021."},"publication":"MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop","department":[{"_id":"58"}],"type":"conference","place":"Munich, DE","date_created":"2022-06-23T11:52:50Z","date_updated":"2022-06-23T11:54:16Z","publication_status":"published","conference":{"end_date":"2021-03-19","start_date":"2021-03-18"},"author":[{"id":"5603","last_name":"Adelt","first_name":"Peer","full_name":"Adelt, Peer"},{"last_name":"Koppelmann","first_name":"Bastian","full_name":"Koppelmann, Bastian","id":"25260"},{"id":"16243","full_name":"Müller, Wolfgang","last_name":"Müller","first_name":"Wolfgang"},{"id":"37144","first_name":"Christoph","last_name":"Scheytt","full_name":"Scheytt, Christoph"}],"publication_identifier":{"isbn":["978-3-8007-5500-4"]},"year":"2021","title":"Register and Instruction Coverage Analysis for Different RISC-V ISA Modules","status":"public","user_id":"5603","language":[{"iso":"eng"}],"_id":"32125","publisher":"VDE"},{"doi":"10.1016/j.jctb.2021.11.001","language":[{"iso":"eng"}],"date_updated":"2022-11-09T08:44:37Z","publication_status":"published","intvolume":"       153","year":"2021","title":"Nowhere-zero 3-flows in toroidal graphs","author":[{"full_name":"Li, Jiaao","last_name":"Li","first_name":"Jiaao"},{"id":"92748","full_name":"Ma, Yulai","first_name":"Yulai","last_name":"Ma"},{"full_name":"Miao, Zhengke","first_name":"Zhengke","last_name":"Miao"},{"last_name":"Shi","first_name":"Yongtang","full_name":"Shi, Yongtang"},{"full_name":"Wang, Weifan","first_name":"Weifan","last_name":"Wang"},{"full_name":"Zhang, Cun-Quan","first_name":"Cun-Quan","last_name":"Zhang"}],"publication_identifier":{"issn":["0095-8956"]},"type":"journal_article","keyword":["Computational Theory and Mathematics","Discrete Mathematics and Combinatorics","Theoretical Computer Science"],"department":[{"_id":"542"}],"date_created":"2022-11-09T08:43:55Z","publication":"Journal of Combinatorial Theory, Series B","user_id":"15540","volume":153,"page":"61-80","_id":"34042","publisher":"Elsevier BV","status":"public","citation":{"ieee":"J. Li, Y. Ma, Z. Miao, Y. Shi, W. Wang, and C.-Q. Zhang, “Nowhere-zero 3-flows in toroidal graphs,” <i>Journal of Combinatorial Theory, Series B</i>, vol. 153, pp. 61–80, 2021, doi: <a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">10.1016/j.jctb.2021.11.001</a>.","apa":"Li, J., Ma, Y., Miao, Z., Shi, Y., Wang, W., &#38; Zhang, C.-Q. (2021). Nowhere-zero 3-flows in toroidal graphs. <i>Journal of Combinatorial Theory, Series B</i>, <i>153</i>, 61–80. <a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">https://doi.org/10.1016/j.jctb.2021.11.001</a>","mla":"Li, Jiaao, et al. “Nowhere-Zero 3-Flows in Toroidal Graphs.” <i>Journal of Combinatorial Theory, Series B</i>, vol. 153, Elsevier BV, 2021, pp. 61–80, doi:<a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">10.1016/j.jctb.2021.11.001</a>.","bibtex":"@article{Li_Ma_Miao_Shi_Wang_Zhang_2021, title={Nowhere-zero 3-flows in toroidal graphs}, volume={153}, DOI={<a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">10.1016/j.jctb.2021.11.001</a>}, journal={Journal of Combinatorial Theory, Series B}, publisher={Elsevier BV}, author={Li, Jiaao and Ma, Yulai and Miao, Zhengke and Shi, Yongtang and Wang, Weifan and Zhang, Cun-Quan}, year={2021}, pages={61–80} }","chicago":"Li, Jiaao, Yulai Ma, Zhengke Miao, Yongtang Shi, Weifan Wang, and Cun-Quan Zhang. “Nowhere-Zero 3-Flows in Toroidal Graphs.” <i>Journal of Combinatorial Theory, Series B</i> 153 (2021): 61–80. <a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">https://doi.org/10.1016/j.jctb.2021.11.001</a>.","short":"J. Li, Y. Ma, Z. Miao, Y. Shi, W. Wang, C.-Q. Zhang, Journal of Combinatorial Theory, Series B 153 (2021) 61–80.","ama":"Li J, Ma Y, Miao Z, Shi Y, Wang W, Zhang C-Q. Nowhere-zero 3-flows in toroidal graphs. <i>Journal of Combinatorial Theory, Series B</i>. 2021;153:61-80. doi:<a href=\"https://doi.org/10.1016/j.jctb.2021.11.001\">10.1016/j.jctb.2021.11.001</a>"}},{"project":[{"name":"SFB 901 - Subproject B4","_id":"12"},{"name":"SFB 901: SFB 901","_id":"1"},{"_id":"3","name":"SFB 901 - B: SFB 901 - Project Area B"}],"publication":"2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)","citation":{"short":"F. Pauck, H. Wehrheim, in: 2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM), 2021.","chicago":"Pauck, Felix, and Heike Wehrheim. “Jicer: Simplifying Cooperative Android App Analysis Tasks.” In <i>2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)</i>, 2021. <a href=\"https://doi.org/10.1109/scam52516.2021.00031\">https://doi.org/10.1109/scam52516.2021.00031</a>.","ieee":"F. Pauck and H. Wehrheim, “Jicer: Simplifying Cooperative Android App Analysis Tasks,” 2021, doi: <a href=\"https://doi.org/10.1109/scam52516.2021.00031\">10.1109/scam52516.2021.00031</a>.","apa":"Pauck, F., &#38; Wehrheim, H. (2021). Jicer: Simplifying Cooperative Android App Analysis Tasks. <i>2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)</i>. <a href=\"https://doi.org/10.1109/scam52516.2021.00031\">https://doi.org/10.1109/scam52516.2021.00031</a>","bibtex":"@inproceedings{Pauck_Wehrheim_2021, title={Jicer: Simplifying Cooperative Android App Analysis Tasks}, DOI={<a href=\"https://doi.org/10.1109/scam52516.2021.00031\">10.1109/scam52516.2021.00031</a>}, booktitle={2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)}, author={Pauck, Felix and Wehrheim, Heike}, year={2021} }","ama":"Pauck F, Wehrheim H. Jicer: Simplifying Cooperative Android App Analysis Tasks. In: <i>2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)</i>. ; 2021. doi:<a href=\"https://doi.org/10.1109/scam52516.2021.00031\">10.1109/scam52516.2021.00031</a>","mla":"Pauck, Felix, and Heike Wehrheim. “Jicer: Simplifying Cooperative Android App Analysis Tasks.” <i>2021 IEEE 21st International Working Conference on Source Code Analysis and Manipulation (SCAM)</i>, 2021, doi:<a href=\"https://doi.org/10.1109/scam52516.2021.00031\">10.1109/scam52516.2021.00031</a>."},"type":"conference","department":[{"_id":"77"}],"date_created":"2021-12-01T08:53:29Z","publication_status":"published","date_updated":"2022-11-17T14:26:19Z","title":"Jicer: Simplifying Cooperative Android App Analysis Tasks","year":"2021","status":"public","author":[{"full_name":"Pauck, Felix","last_name":"Pauck","first_name":"Felix","id":"22398"},{"first_name":"Heike","last_name":"Wehrheim","full_name":"Wehrheim, Heike","id":"573"}],"user_id":"477","doi":"10.1109/scam52516.2021.00031","_id":"28199","language":[{"iso":"eng"}]},{"project":[{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - Project Area T","_id":"82"},{"_id":"84","name":"SFB 901 -Subproject T2"},{"_id":"1","name":"SFB 901: SFB 901"},{"name":"SFB 901 - C1: SFB 901 - Subproject C1","_id":"13"}],"citation":{"short":"J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).","chicago":"Bobolz, Jan, Fabian Eidens, Raphael Heitjohann, and Jeremy Fell. “Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes.” IACR eprint, 2021.","apa":"Bobolz, J., Eidens, F., Heitjohann, R., &#38; Fell, J. (2021). <i>Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes</i>. IACR eprint.","ieee":"J. Bobolz, F. Eidens, R. Heitjohann, and J. Fell, “Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes.” IACR eprint, 2021.","ama":"Bobolz J, Eidens F, Heitjohann R, Fell J. Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes. Published online 2021.","bibtex":"@article{Bobolz_Eidens_Heitjohann_Fell_2021, title={Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes}, publisher={IACR eprint}, author={Bobolz, Jan and Eidens, Fabian and Heitjohann, Raphael and Fell, Jeremy}, year={2021} }","mla":"Bobolz, Jan, et al. <i>Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes</i>. IACR eprint, 2021."},"oa":"1","department":[{"_id":"64"}],"type":"preprint","date_created":"2021-10-21T07:51:32Z","date_updated":"2022-11-18T09:38:42Z","author":[{"id":"27207","full_name":"Bobolz, Jan","last_name":"Bobolz","first_name":"Jan"},{"full_name":"Eidens, Fabian","last_name":"Eidens","first_name":"Fabian","id":"25078"},{"full_name":"Heitjohann, Raphael","first_name":"Raphael","last_name":"Heitjohann"},{"last_name":"Fell","first_name":"Jeremy","full_name":"Fell, Jeremy"}],"status":"public","year":"2021","title":"Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes","user_id":"477","publisher":"IACR eprint","_id":"26645","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://eprint.iacr.org/2021/961","open_access":"1"}]},{"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"}],"type":"journal_article","keyword":["tet_topic_waveguide"],"date_created":"2021-11-30T20:04:57Z","file":[{"content_type":"application/pdf","file_id":"28197","access_level":"open_access","file_size":6618403,"file_name":"2021-11 Hammer - OSA Continuum - Trenches.pdf","date_updated":"2021-11-30T20:19:15Z","relation":"main_file","date_created":"2021-11-30T20:07:53Z","creator":"fossie"}],"abstract":[{"lang":"eng","text":"We show that narrow trenches in a high-contrast silicon-photonics slab can act as lossless power dividers for semi-guided waves. Reflectance and transmittance can be easily configured by selecting the trench width. At sufficiently high angles of incidence, the devices are lossless, apart from material attenuation and scattering due to surface roughness. We numerically simulate a series of devices within the full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as well as for excitation by focused Gaussian wave bundles. Straightforward cascading of the trenches leads to concepts for 1×M-power dividers and a polarization beam splitter."}],"publication":"OSA Continuum","issue":"12","doi":"10.1364/osac.437549","language":[{"iso":"eng"}],"intvolume":"         4","date_updated":"2022-11-18T09:58:03Z","publication_status":"published","author":[{"first_name":"Manfred","orcid":"0000-0002-6331-9348","last_name":"Hammer","full_name":"Hammer, Manfred","id":"48077"},{"id":"40428","full_name":"Ebers, Lena","first_name":"Lena","last_name":"Ebers"},{"full_name":"Förstner, Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","first_name":"Jens","id":"158"}],"publication_identifier":{"issn":["2578-7519"]},"title":"Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics","year":"2021","oa":"1","project":[{"name":"TRR 142","_id":"53"},{"_id":"56","name":"TRR 142 - Project Area C"}],"citation":{"mla":"Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” <i>OSA Continuum</i>, vol. 4, no. 12, 2021, p. 3081, doi:<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>.","bibtex":"@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics}, volume={4}, DOI={<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>}, number={12}, journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={3081} }","ama":"Hammer M, Ebers L, Förstner J. Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>. 2021;4(12):3081. doi:<a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>","ieee":"M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics,” <i>OSA Continuum</i>, vol. 4, no. 12, p. 3081, 2021, doi: <a href=\"https://doi.org/10.1364/osac.437549\">10.1364/osac.437549</a>.","apa":"Hammer, M., Ebers, L., &#38; Förstner, J. (2021). Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>, <i>4</i>(12), 3081. <a href=\"https://doi.org/10.1364/osac.437549\">https://doi.org/10.1364/osac.437549</a>","chicago":"Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” <i>OSA Continuum</i> 4, no. 12 (2021): 3081. <a href=\"https://doi.org/10.1364/osac.437549\">https://doi.org/10.1364/osac.437549</a>.","short":"M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081."},"file_date_updated":"2021-11-30T20:19:15Z","volume":4,"ddc":["530"],"user_id":"477","_id":"28196","page":"3081","has_accepted_license":"1","status":"public"},{"date_created":"2022-10-20T16:44:19Z","file":[{"file_id":"33855","content_type":"application/pdf","file_name":"preprint.pdf","file_size":2521656,"access_level":"open_access","relation":"main_file","date_updated":"2022-10-20T16:41:10Z","date_created":"2022-10-20T16:41:10Z","creator":"stschn"}],"oa":"1","department":[{"_id":"75"}],"keyword":["mobility management","coordinated multipoint","CoMP","cell selection","resource management","reinforcement learning","multi agent","MARL","self-learning","self-adaptation","QoE"],"type":"working_paper","citation":{"ieee":"S. B. Schneider, H. Karl, R. Khalili, and A. Hecker, <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>. 2021.","apa":"Schneider, S. B., Karl, H., Khalili, R., &#38; Hecker, A. (2021). <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>.","short":"S.B. Schneider, H. Karl, R. Khalili, A. Hecker, DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning, 2021.","chicago":"Schneider, Stefan Balthasar, Holger Karl, Ramin Khalili, and Artur Hecker. <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>, 2021.","mla":"Schneider, Stefan Balthasar, et al. <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>. 2021.","bibtex":"@book{Schneider_Karl_Khalili_Hecker_2021, title={DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning}, author={Schneider, Stefan Balthasar and Karl, Holger and Khalili, Ramin and Hecker, Artur}, year={2021} }","ama":"Schneider SB, Karl H, Khalili R, Hecker A. <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>.; 2021."},"file_date_updated":"2022-10-20T16:41:10Z","project":[{"_id":"4","name":"SFB 901 - C: SFB 901 - Project Area C"},{"_id":"16","name":"SFB 901 - C4: SFB 901 - Subproject C4"},{"_id":"1","name":"SFB 901: SFB 901"}],"abstract":[{"text":"Macrodiversity is a key technique to increase the capacity of mobile networks. It can be realized using coordinated multipoint (CoMP), simultaneously connecting users to multiple overlapping cells. Selecting which users to serve by how many and which cells is NP-hard but needs to happen continuously in real time as users move and channel state changes. Existing approaches often require strict assumptions about or perfect knowledge of the underlying radio system, its resource allocation scheme, or user movements, none of which is readily available in practice.\r\n\r\nInstead, we propose three novel self-learning and self-adapting approaches using model-free deep reinforcement learning (DRL): DeepCoMP, DD-CoMP, and D3-CoMP. DeepCoMP leverages central observations and control of all users to select cells almost optimally. DD-CoMP and D3-CoMP use multi-agent DRL, which allows distributed, robust, and highly scalable coordination. All three approaches learn from experience and self-adapt to varying scenarios, reaching 2x higher Quality of Experience than other approaches. They have very few built-in assumptions and do not need prior system knowledge, making them more robust to change and better applicable in practice than existing approaches.","lang":"eng"}],"_id":"33854","language":[{"iso":"eng"}],"ddc":["004"],"user_id":"477","author":[{"id":"35343","full_name":"Schneider, Stefan Balthasar","orcid":"0000-0001-8210-4011","last_name":"Schneider","first_name":"Stefan Balthasar"},{"id":"126","full_name":"Karl, Holger","last_name":"Karl","first_name":"Holger"},{"full_name":"Khalili, Ramin","first_name":"Ramin","last_name":"Khalili"},{"first_name":"Artur","last_name":"Hecker","full_name":"Hecker, Artur"}],"status":"public","year":"2021","title":"DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning","has_accepted_license":"1","date_updated":"2022-11-18T09:59:27Z"},{"_id":"29137","language":[{"iso":"eng"}],"publisher":"Association for Computing Machinery (ACM)","user_id":"477","doi":"10.1145/3468044.3468055","author":[{"id":"49992","full_name":"Hansmeier, Tim","last_name":"Hansmeier","first_name":"Tim","orcid":"0000-0003-1377-3339"}],"conference":{"end_date":"2021-06-23","name":"International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies (HEART ’21)","start_date":"2021-06-21","location":"Online"},"year":"2021","title":"Self-aware Operation of Heterogeneous Compute Nodes using the Learning Classifier System XCS","status":"public","publication_status":"published","date_updated":"2022-11-18T10:03:24Z","date_created":"2021-12-27T12:01:02Z","place":"New York, NY, United States","department":[{"_id":"78"}],"type":"conference","citation":{"bibtex":"@inproceedings{Hansmeier_2021, place={New York, NY, United States}, title={Self-aware Operation of Heterogeneous Compute Nodes using the Learning Classifier System XCS}, DOI={<a href=\"https://doi.org/10.1145/3468044.3468055\">10.1145/3468044.3468055</a>}, booktitle={HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies}, publisher={Association for Computing Machinery (ACM)}, author={Hansmeier, Tim}, year={2021} }","ama":"Hansmeier T. Self-aware Operation of Heterogeneous Compute Nodes using the Learning Classifier System XCS. In: <i>HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies</i>. Association for Computing Machinery (ACM); 2021. doi:<a href=\"https://doi.org/10.1145/3468044.3468055\">10.1145/3468044.3468055</a>","mla":"Hansmeier, Tim. “Self-Aware Operation of Heterogeneous Compute Nodes Using the Learning Classifier System XCS.” <i>HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies</i>, Association for Computing Machinery (ACM), 2021, doi:<a href=\"https://doi.org/10.1145/3468044.3468055\">10.1145/3468044.3468055</a>.","short":"T. Hansmeier, in: HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies, Association for Computing Machinery (ACM), New York, NY, United States, 2021.","chicago":"Hansmeier, Tim. “Self-Aware Operation of Heterogeneous Compute Nodes Using the Learning Classifier System XCS.” In <i>HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies</i>. New York, NY, United States: Association for Computing Machinery (ACM), 2021. <a href=\"https://doi.org/10.1145/3468044.3468055\">https://doi.org/10.1145/3468044.3468055</a>.","ieee":"T. Hansmeier, “Self-aware Operation of Heterogeneous Compute Nodes using the Learning Classifier System XCS,” presented at the International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies (HEART ’21), Online, 2021, doi: <a href=\"https://doi.org/10.1145/3468044.3468055\">10.1145/3468044.3468055</a>.","apa":"Hansmeier, T. (2021). Self-aware Operation of Heterogeneous Compute Nodes using the Learning Classifier System XCS. <i>HEART ’21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies</i>. International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies (HEART ’21), Online. <a href=\"https://doi.org/10.1145/3468044.3468055\">https://doi.org/10.1145/3468044.3468055</a>"},"publication":"HEART '21: Proceedings of the 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies","project":[{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901: SFB 901","_id":"1"},{"name":"SFB 901 - C2: SFB 901 - Subproject C2","_id":"14"}]},{"abstract":[{"text":"Die Werkzeugdemonstration des QEMU Timing Analyzers (QTA) stellt eine Erweiterung des quelloffenen CPU Emulators QEMU zur Simulation von Softwareprogrammen und deren Worst-Case Zeitverhaltens vor, das durch eine statische Zeitanalyse vorher aus dem Softwareprogramm extrahiert wurde. Der Ablauf der Analyse gliedert sich in mehrere Schritte: Zunächst wird für das zu simulierende Binärprogramm eine WCET-Analyse mit aiT durchgeführt. Im Preprocessing des aiT-Reports wird daraufhin ein WCET-annotierter Kontrollflussgraph erzeugt. Dabei entsprechen die Knoten im Kontrollflussgraph den aiT-Blöcken und die Kanten dem jeweiligen Worst-Case-Zeitverbrauch, um das Programm im aktuellen Ausführungskontext vom Quell- bis zum Zielblock laufen zu lassen. Nach dem Preprocessing werden Binärprogramm und der zuvor erzeugte, zeitannotierte Kontrollflussgraph von QEMU geladen und gemeinsam simuliert.\r\n\r\nDie Implementierung des QTA basiert auf der Standard TGI Plugin API (Tiny Code Generator Plugin API), die seit Ende 2019 mit QEMU V4.2 verfügbar ist. Dieses API erlaubt die Entwicklung von versionsunabhängigen QEMU-Erweiterungen. Die QEMU-QTA-Erweiterung wird zum Zeitpunkt der Werkzeugdemonstration inklusive des ait2qta-Preprozessors unter github.com im Quellcode frei verfügbar sein.\r\n\r\nDie Demonstration geht von einer existierenden aiT-Analyse eines für TriCore© kompilierten binären Softwareprograms aus, erläutert das Kontrollflusszwischenformat und zeigt die zeitannotierte Simulation der Software.","lang":"ger"}],"publication":"MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop","citation":{"ieee":"P. Adelt, B. Koppelmann, W. Müller, and C. Scheytt, “QEMU zur Simulation von Worst-Case-Ausführungszeiten,” 2021.","mla":"Adelt, Peer, et al. “QEMU zur Simulation von Worst-Case-Ausführungszeiten.” <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>, VDE, 2021.","apa":"Adelt, P., Koppelmann, B., Müller, W., &#38; Scheytt, C. (2021). QEMU zur Simulation von Worst-Case-Ausführungszeiten. <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>.","bibtex":"@inproceedings{Adelt_Koppelmann_Müller_Scheytt_2021, place={Munich, DE}, title={QEMU zur Simulation von Worst-Case-Ausführungszeiten}, booktitle={MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop}, publisher={VDE}, author={Adelt, Peer and Koppelmann, Bastian and Müller, Wolfgang and Scheytt, Christoph}, year={2021} }","ama":"Adelt P, Koppelmann B, Müller W, Scheytt C. QEMU zur Simulation von Worst-Case-Ausführungszeiten. In: <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>. VDE; 2021.","short":"P. Adelt, B. Koppelmann, W. Müller, C. Scheytt, in: MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop, VDE, Munich, DE, 2021.","chicago":"Adelt, Peer, Bastian Koppelmann, Wolfgang Müller, and Christoph Scheytt. “QEMU zur Simulation von Worst-Case-Ausführungszeiten.” In <i>MBMV 2021 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop</i>. Munich, DE: VDE, 2021."},"keyword":["QEMU","aiT","Zeitannotation","WCET"],"type":"conference","department":[{"_id":"58"}],"date_created":"2022-06-23T12:07:10Z","place":"Munich, DE","publication_status":"published","date_updated":"2022-12-06T13:24:44Z","year":"2021","status":"public","title":"QEMU zur Simulation von Worst-Case-Ausführungszeiten","author":[{"id":"5603","first_name":"Peer","last_name":"Adelt","full_name":"Adelt, Peer"},{"id":"25260","full_name":"Koppelmann, Bastian","last_name":"Koppelmann","first_name":"Bastian"},{"id":"16243","full_name":"Müller, Wolfgang","last_name":"Müller","first_name":"Wolfgang"},{"id":"37144","full_name":"Scheytt, Christoph","orcid":"https://orcid.org/0000-0002-5950-6618","first_name":"Christoph","last_name":"Scheytt"}],"conference":{"end_date":"2021-03-19","start_date":"2021-03-18"},"user_id":"5603","_id":"32132","language":[{"iso":"ger"}],"publisher":"VDE"},{"quality_controlled":"1","citation":{"ama":"Glöckner H, Willis GA. Decompositions of locally compact contraction groups, series and extensions. <i>Journal of Algebra</i>. 2021;570:164-214. doi:<a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>","bibtex":"@article{Glöckner_Willis_2021, title={Decompositions of locally compact contraction groups, series and extensions}, volume={570}, DOI={<a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>}, journal={Journal of Algebra}, author={Glöckner, Helge and Willis, George A.}, year={2021}, pages={164–214} }","mla":"Glöckner, Helge, and George A. Willis. “Decompositions of Locally Compact Contraction Groups, Series and Extensions.” <i>Journal of Algebra</i>, vol. 570, 2021, pp. 164–214, doi:<a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>.","short":"H. Glöckner, G.A. Willis, Journal of Algebra 570 (2021) 164–214.","chicago":"Glöckner, Helge, and George A. Willis. “Decompositions of Locally Compact Contraction Groups, Series and Extensions.” <i>Journal of Algebra</i> 570 (2021): 164–214. <a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>.","apa":"Glöckner, H., &#38; Willis, G. A. (2021). Decompositions of locally compact contraction groups, series and extensions. <i>Journal of Algebra</i>, <i>570</i>, 164–214. <a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>","ieee":"H. Glöckner and G. A. Willis, “Decompositions of locally compact contraction groups, series and extensions,” <i>Journal of Algebra</i>, vol. 570, pp. 164–214, 2021, doi: <a href=\"https://doi.org/10.1016/j.jalgebra.2020.11.007\">https://doi.org/10.1016/j.jalgebra.2020.11.007</a>."},"volume":570,"user_id":"178","_id":"34786","page":"164-214","status":"public","department":[{"_id":"10"},{"_id":"87"},{"_id":"93"}],"keyword":["Contraction group","Torsion group","Extension","Cocycle","Section","Equivariant cohomology","Abelian group","Nilpotent group","Isomorphism types"],"type":"journal_article","date_created":"2022-12-21T18:43:08Z","abstract":[{"text":"A locally compact contraction group is a pair (G,α), where G is a locally compact group and α:G→G an automorphism such that αn(x)→e pointwise as n→∞. We show that every surjective, continuous, equivariant homomorphism between locally compact contraction groups admits an equivariant continuous global section. As a consequence, extensions of locally compact contraction groups with abelian kernel can be described by continuous equivariant cohomology. For each prime number p, we use 2-cocycles to construct uncountably many pairwise non-isomorphic totally disconnected, locally compact contraction groups (G,α) which are central extensions0→Fp((t))→G→Fp((t))→0 of the additive group of the field of formal Laurent series over Fp=Z/pZ by itself. By contrast, there are only countably many locally compact contraction groups (up to isomorphism) which are torsion groups and abelian, as follows from a classification of the abelian locally compact contraction groups.","lang":"eng"}],"publication":"Journal of Algebra","doi":"https://doi.org/10.1016/j.jalgebra.2020.11.007","language":[{"iso":"eng"}],"intvolume":"       570","article_type":"original","date_updated":"2022-12-21T18:58:44Z","author":[{"id":"178","full_name":"Glöckner, Helge","last_name":"Glöckner","first_name":"Helge"},{"first_name":"George A.","last_name":"Willis","full_name":"Willis, George A."}],"publication_identifier":{"issn":["0021-8693"]},"year":"2021","title":"Decompositions of locally compact contraction groups, series and extensions"},{"issue":"1","publication":"Mathematische Nachrichten","type":"journal_article","department":[{"_id":"10"},{"_id":"87"},{"_id":"93"}],"date_created":"2022-12-21T19:57:32Z","date_updated":"2022-12-21T20:00:29Z","article_type":"original","intvolume":"       294","title":"Direct limits of regular Lie groups","year":"2021","publication_identifier":{"issn":["0025-584X"]},"author":[{"id":"178","full_name":"Glöckner, Helge","last_name":"Glöckner","first_name":"Helge"}],"doi":"10.1002/mana.201900073","language":[{"iso":"eng"}],"quality_controlled":"1","citation":{"short":"H. Glöckner, Mathematische Nachrichten 294 (2021) 74–81.","chicago":"Glöckner, Helge. “Direct Limits of Regular Lie Groups.” <i>Mathematische Nachrichten</i> 294, no. 1 (2021): 74–81. <a href=\"https://doi.org/10.1002/mana.201900073\">https://doi.org/10.1002/mana.201900073</a>.","ieee":"H. Glöckner, “Direct limits of regular Lie groups,” <i>Mathematische Nachrichten</i>, vol. 294, no. 1, pp. 74–81, 2021, doi: <a href=\"https://doi.org/10.1002/mana.201900073\">10.1002/mana.201900073</a>.","apa":"Glöckner, H. (2021). Direct limits of regular Lie groups. <i>Mathematische Nachrichten</i>, <i>294</i>(1), 74–81. <a href=\"https://doi.org/10.1002/mana.201900073\">https://doi.org/10.1002/mana.201900073</a>","bibtex":"@article{Glöckner_2021, title={Direct limits of regular Lie groups}, volume={294}, DOI={<a href=\"https://doi.org/10.1002/mana.201900073\">10.1002/mana.201900073</a>}, number={1}, journal={Mathematische Nachrichten}, author={Glöckner, Helge}, year={2021}, pages={74–81} }","ama":"Glöckner H. Direct limits of regular Lie groups. <i>Mathematische Nachrichten</i>. 2021;294(1):74–81. doi:<a href=\"https://doi.org/10.1002/mana.201900073\">10.1002/mana.201900073</a>","mla":"Glöckner, Helge. “Direct Limits of Regular Lie Groups.” <i>Mathematische Nachrichten</i>, vol. 294, no. 1, 2021, pp. 74–81, doi:<a href=\"https://doi.org/10.1002/mana.201900073\">10.1002/mana.201900073</a>."},"status":"public","user_id":"178","volume":294,"page":"74–81","_id":"34795"},{"abstract":[{"lang":"eng","text":"Let $G$ be a Lie group over a totally disconnected local field and $\\alpha$\r\nbe an analytic endomorphism of $G$. The contraction group of $\\alpha$ ist the\r\nset of all $x\\in G$ such that $\\alpha^n(x)\\to e$ as $n\\to\\infty$. Call sequence\r\n$(x_{-n})_{n\\geq 0}$ in $G$ an $\\alpha$-regressive trajectory for $x\\in G$ if\r\n$\\alpha(x_{-n})=x_{-n+1}$ for all $n\\geq 1$ and $x_0=x$. The anti-contraction\r\ngroup of $\\alpha$ is the set of all $x\\in G$ admitting an $\\alpha$-regressive\r\ntrajectory $(x_{-n})_{n\\geq 0}$ such that $x_{-n}\\to e$ as $n\\to\\infty$. The\r\nLevi subgroup is the set of all $x\\in G$ whose $\\alpha$-orbit is relatively\r\ncompact, and such that $x$ admits an $\\alpha$-regressive trajectory\r\n$(x_{-n})_{n\\geq 0}$ such that $\\{x_{-n}\\colon n\\geq 0\\}$ is relatively\r\ncompact. The big cell associated to $\\alpha$ is the set $\\Omega$ of all all\r\nproducts $xyz$ with $x$ in the contraction group, $y$ in the Levi subgroup and\r\n$z$ in the anti-contraction group. Let $\\pi$ be the mapping from the cartesian\r\nproduct of the contraction group, Levi subgroup and anti-contraction group to\r\n$\\Omega$ which maps $(x,y,z)$ to $xyz$. We show: $\\Omega$ is open in $G$ and\r\n$\\pi$ is \\'{e}tale for suitable immersed Lie subgroup structures on the three\r\nsubgroups just mentioned. Moreover, we study group-theoretic properties of\r\ncontraction groups and anti-contraction groups."}],"publication":"arXiv:2101.02981","citation":{"apa":"Glöckner, H. (2021). Contraction groups and the big cell for endomorphisms of Lie groups over  local fields. In <i>arXiv:2101.02981</i>.","ieee":"H. Glöckner, “Contraction groups and the big cell for endomorphisms of Lie groups over  local fields,” <i>arXiv:2101.02981</i>. 2021.","short":"H. Glöckner, ArXiv:2101.02981 (2021).","chicago":"Glöckner, Helge. “Contraction Groups and the Big Cell for Endomorphisms of Lie Groups over  Local Fields.” <i>ArXiv:2101.02981</i>, 2021.","mla":"Glöckner, Helge. “Contraction Groups and the Big Cell for Endomorphisms of Lie Groups over  Local Fields.” <i>ArXiv:2101.02981</i>, 2021.","ama":"Glöckner H. Contraction groups and the big cell for endomorphisms of Lie groups over  local fields. <i>arXiv:210102981</i>. Published online 2021.","bibtex":"@article{Glöckner_2021, title={Contraction groups and the big cell for endomorphisms of Lie groups over  local fields}, journal={arXiv:2101.02981}, author={Glöckner, Helge}, year={2021} }"},"type":"preprint","department":[{"_id":"10"},{"_id":"87"},{"_id":"93"}],"external_id":{"arxiv":["2101.02981"]},"date_created":"2022-12-22T07:47:35Z","date_updated":"2022-12-22T07:48:29Z","year":"2021","title":"Contraction groups and the big cell for endomorphisms of Lie groups over  local fields","status":"public","author":[{"first_name":"Helge","last_name":"Glöckner","full_name":"Glöckner, Helge","id":"178"}],"user_id":"178","language":[{"iso":"eng"}],"_id":"34806"},{"has_accepted_license":"1","status":"public","ddc":["000"],"user_id":"36399","_id":"28683","project":[{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C5","_id":"17"},{"name":"SFB 901: SFB 901","_id":"1"}],"file_date_updated":"2022-12-30T22:15:15Z","supervisor":[{"first_name":"Gregor","last_name":"Engels","full_name":"Engels, Gregor","id":"107"}],"citation":{"mla":"Schwichtenberg, Bahar. <i>Modeling and Analyzing Software Ecosystems</i>. 2021, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1270 \">10.17619/UNIPB/1-1270 </a>.","ama":"Schwichtenberg B. <i>Modeling and Analyzing Software Ecosystems</i>.; 2021. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1270 \">10.17619/UNIPB/1-1270 </a>","bibtex":"@book{Schwichtenberg_2021, title={Modeling and Analyzing Software Ecosystems}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-1270 \">10.17619/UNIPB/1-1270 </a>}, author={Schwichtenberg, Bahar}, year={2021} }","apa":"Schwichtenberg, B. (2021). <i>Modeling and Analyzing Software Ecosystems</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-1270 \">https://doi.org/10.17619/UNIPB/1-1270 </a>","ieee":"B. Schwichtenberg, <i>Modeling and Analyzing Software Ecosystems</i>. 2021.","short":"B. Schwichtenberg, Modeling and Analyzing Software Ecosystems, 2021.","chicago":"Schwichtenberg, Bahar. <i>Modeling and Analyzing Software Ecosystems</i>, 2021. <a href=\"https://doi.org/10.17619/UNIPB/1-1270 \">https://doi.org/10.17619/UNIPB/1-1270 </a>."},"date_updated":"2022-12-30T22:15:37Z","year":"2021","title":"Modeling and Analyzing Software Ecosystems","author":[{"id":"36399","full_name":"Schwichtenberg, Bahar","last_name":"Schwichtenberg","first_name":"Bahar"}],"doi":"10.17619/UNIPB/1-1270 ","language":[{"iso":"eng"}],"abstract":[{"text":"In den letzten Jahren haben sich Software-Ökosysteme als neue, erfolgreiche Geschäftsform etabliert. Unternehmen agieren hierbei als Anbieter von Software-Plattformen, auf denen Drittanbieter Softwarelösungen für den Markt anbieten können.  Etablierte Beispiele sind hierbei sogenannte App-Stores, die z.B. von Google oder Apple angeboten werden.\r\n\r\nBeim Aufbau von Software-Ökosystemen müssen vom Plattformanbieter viele architektonische Entwurfsentscheidungen getroffen werden. Bisher gibt es keine Architekturrichtlinien und -werkzeuge, die den Entwurf einer Ökosystemarchitektur unterstützen. Dadurch fehlt hier systematisches, wiederverwendbares Wissen. Plattformanbieter müssen auf ad-hoc Entscheidungen zurückgreifen. Dies kann dann zu Problemen im Betrieb der Software-Plattformen führen, zu erhöhten Ausfallrisiken und Mehrkosten.\r\n\r\nDer Mangel an Architekturwissen manifestiert sich konkret in zwei Gruppen von Herausforderungen: Erstens fehlt eine Wissensbasis zu Architekturalternativen und zweitens fehlt es an methodischem Wissen zu Entwicklung und Betrieb von Software-Ökosystemen. Eine Architekturwissensbasis würde Orientierungshilfen zu den Bestandteilen von Software-Ökosystemen und deren Abhängigkeiten geben, während methodisches Wissen die Erstellung dieser Systeme erleichtern würde.\r\n\r\nIn der Dissertation werden diese Herausforderungen durch die Entwicklung des Frameworks SecoArc für die Modellierung von Software-Ökosystemen angegangen. Der Beitrag der Dissertation ist zweifach: \r\n1.\tDas SecoArc-Framework umfasst eine Architekturwissensbasis, die wiederverwendbare Architekturentwurfsentscheidungen\r\nvon Software-Ökosystemen enthält. Die Wissensbasis wurde entwickelt, indem das Architekturwissen bestehender Ökosysteme sowie aus existierender Fachliteratur ermittelt wurde und in einer Produktlinie für Software-Ökosysteme konsolidiert wurde. Die Produktlinie umfasst architektonische Gemeinsamkeiten und Variabilitäten von Software-Ökosystemen. \r\n2.\tDas SecoArc-Framework liefert methodisches Wissen, um die Ökosystemarchitektur in Modellen zu entwerfen und zu analysieren. Dieses Wissen wurde entwickelt, indem drei Architekturmuster identifiziert wurden. Jedes Muster erfasst unterschiedliche Beziehungen zwischen architektonischen Entwurfsentscheidungen zu den Qualitätsmerkmalen einer Ökosystemgesundheit und der Erreichung von Geschäftszielen. \r\n\r\nDie Architekturmuster und die Produktlinie wurden dazu genutzt, ein Modellierungsframework zu entwickeln und in Form eines Prototypen umzusetzen, welches einen Entwurfsprozess, eine Modellierungssprache und eine Architekturanalysetechnik umfasst. Es erleichtert das Modellieren, Analysieren und Vergleichen von Ökosystemarchitekturen.\r\n\r\nDie Ergebnisse der Dissertation wurden im Rahmen von zwei Studien evaluiert. In der ersten Validierungsstudie wurden das Framework sowie der Prototyp verwendet, um zwei alternative Ökosystemarchitekturen zu entwerfen und zu analysieren. In der zweiten Studie wurde eine Analyse von existierenden Ökosystemen basierend auf den architektonischen Variabilitäten des Frameworks durchgeführt.","lang":"ger"}],"type":"dissertation","keyword":["Enterprise Architecture","Architectural Design Decisions","Open Platforms"],"department":[{"_id":"66"}],"file":[{"date_created":"2022-12-30T22:15:15Z","creator":"bahareh","content_type":"application/pdf","success":1,"file_id":"35069","date_updated":"2022-12-30T22:15:15Z","relation":"main_file","file_size":9125342,"access_level":"closed","file_name":"Bahar_Schwichtenberg_Thesis.pdf"}],"date_created":"2021-12-13T07:20:33Z"},{"citation":{"bibtex":"@inproceedings{Khatibi_Krauter_2021, title={Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD)}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">10.4229/EUPVSEC20212021-5BV.4.11</a>}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)}, author={Khatibi, Arash and Krauter, Stefan}, year={2021}, pages={1141–1147} }","ama":"Khatibi A, Krauter S. Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD). In: <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>. ; 2021:1141-1147. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">10.4229/EUPVSEC20212021-5BV.4.11</a>","mla":"Khatibi, Arash, and Stefan Krauter. “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD).” <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 2021, pp. 1141–47, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">10.4229/EUPVSEC20212021-5BV.4.11</a>.","short":"A. Khatibi, S. Krauter, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 2021, pp. 1141–1147.","chicago":"Khatibi, Arash, and Stefan Krauter. “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD).” In <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 1141–47, 2021. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11</a>.","ieee":"A. Khatibi and S. Krauter, “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD),” in <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 2021, pp. 1141–1147, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">10.4229/EUPVSEC20212021-5BV.4.11</a>.","apa":"Khatibi, A., &#38; Krauter, S. (2021). Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD). <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 1141–1147. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11\">https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11</a>"},"file_date_updated":"2022-01-06T13:26:47Z","quality_controlled":"1","conference":{"end_date":"2021-09-10","name":"38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)","start_date":"2021-09-06"},"status":"public","has_accepted_license":"1","_id":"24551","page":"1141 - 1147","user_id":"28836","ddc":["550"],"publication":"Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)","abstract":[{"lang":"eng","text":"Access to precise meteorological data is crucial to be able to plan and install renewable energy systems \r\nsuch as solar power plants and wind farms. In case of solar energy, knowledge of local irradiance and air temperature \r\nvalues is very important. For this, various methods can be used such as installing local weather stations or using \r\nmeteorological data from different organizations such as Meteonorm or official Deutscher Wetterdienst (DWD). An \r\nalternative is to use satellite reanalysis datasets provided by organizations like the National Aeronautics and Space \r\nAdministration (NASA) and European Centre for Medium-Range Weather Forecasts (ECMWF). In this paper the \r\n“Modern-Era Retrospective analysis for Research and Applications” dataset version 2 (MERRA-2) will be presented, \r\nand its performance will be evaluated by comparing it to locally measured datasets provided by Meteonorm and DWD. \r\nThe analysis shows very high correlation between MERRA-2 and local measurements (correlation coefficients of 0.99) \r\nfor monthly global irradiance and air temperature values. The results prove the suitability of MERRA-2 data for \r\napplications requiring long historical data. Moreover, availability of MERRA-2 for the whole world with an acceptable \r\nresolution makes it a very valuable dataset."}],"date_created":"2021-09-16T10:20:41Z","file":[{"date_updated":"2022-01-06T13:26:47Z","relation":"main_file","access_level":"closed","file_size":2475972,"file_name":"Khatibi Krauter - MERRA 2 vs Meteonorm - EUPVSEC 2021.pdf","success":1,"content_type":"application/pdf","file_id":"29176","creator":"krauter","date_created":"2022-01-06T13:26:47Z"}],"department":[{"_id":"53"}],"keyword":["Energy potential estimation","Photovoltaic","Solar radiation","Temperature measurement","Satellite data","Meteonorm","MERRA-2","DWD"],"type":"conference","publication_identifier":{"isbn":["3-936338-78-7"]},"author":[{"id":"43538","full_name":"Khatibi, Arash","last_name":"Khatibi","first_name":"Arash"},{"id":"28836","last_name":"Krauter","orcid":"0000-0002-3594-260X","first_name":"Stefan","full_name":"Krauter, Stefan"}],"title":"Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD)","year":"2021","publication_status":"published","date_updated":"2022-01-06T13:29:51Z","language":[{"iso":"eng"}],"doi":"10.4229/EUPVSEC20212021-5BV.4.11"},{"user_id":"28836","ddc":["620"],"_id":"24550","page":"659 - 663","has_accepted_license":"1","conference":{"name":"38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)","start_date":"2021-09-06","end_date":"2021-09-10"},"status":"public","quality_controlled":"1","citation":{"apa":"Krauter, S., &#38; Bendfeld, J. (2021). Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–663. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>","ieee":"S. Krauter and J. Bendfeld, “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields,” in <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–663, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” In <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–63, 2021. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663.","mla":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–63, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","ama":"Krauter S, Bendfeld J. Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. In: <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>. ; 2021:659-663. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>","bibtex":"@inproceedings{Krauter_Bendfeld_2021, title={Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2021}, pages={659–663} }"},"file_date_updated":"2022-01-06T13:20:31Z","doi":"10.4229/EUPVSEC20212021-4CO.3.4","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2022-01-06T13:22:03Z","publication_identifier":{"isbn":["3-936338-78-7"]},"author":[{"last_name":"Krauter","orcid":"0000-0002-3594-260X","first_name":"Stefan","full_name":"Krauter, Stefan","id":"28836"},{"id":"16148","last_name":"Bendfeld","first_name":"Jörg","full_name":"Bendfeld, Jörg"}],"title":"Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields","year":"2021","department":[{"_id":"53"}],"type":"conference","keyword":["AC-modules","Microinverter","Power Conditioning","Efficiency","Yield","PV module size","saturation","performance"],"date_created":"2021-09-16T10:17:11Z","file":[{"success":1,"content_type":"application/pdf","file_id":"29175","file_size":5413518,"access_level":"closed","file_name":"Krauter Bendfeld - Module size Microinverters - EUPVSEC 2021.pdf","date_updated":"2022-01-06T13:20:31Z","relation":"main_file","date_created":"2022-01-06T13:20:31Z","creator":"krauter"}],"abstract":[{"text":"Efficiencies and energy yields of microinverters available on the market during 2014‒2021 have been \r\nmeasured, compared, and ranked. Conversion efficiencies as a function of load have been measured indoors with high \r\naccuracy and ranked according to Euro- and CEC weightings. Energy yields have been measured outdoors via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp (until 2020) and 360 Wp (starting 2021). Inverters \r\nwith two inputs have been fed by two of those modules. DC input, AC power output and energy yield of each micro\u0002inverter have been recorded by individual calibrated electricity meters. CEC and EU efficiency rankings have been \r\ncomputed and compared. To assess the influence of PV module size, two extremes have been investigated: A rather \r\nsmall module with 215 Wp - as it has been used 10 years ago, and a brand-new module (2021) offering 360 Wp. Both \r\ntypes of modules contain 60 solar cells in series connection. Appling the low-power modules, the challenge for the \r\ndifferent micro-inverters has been during weak-light conditions, using the high-power modules, some inverters \r\ntemporarily reach their power limits and yield is reduced. A method using a reference configuration of inverter & \r\nmodule and a linear equation y = ax + b resulting in the actual yield, any module & inverter configuration can be \r\ncharacterized by just the coefficients a and b.","lang":"eng"}],"publication":"Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)"},{"department":[{"_id":"53"}],"keyword":["Solar irradiance","MERRA 2","Meteonorm","DWD"],"type":"journal_article","date_created":"2021-02-23T10:18:05Z","file":[{"date_created":"2022-01-06T13:33:09Z","creator":"krauter","success":1,"content_type":"application/pdf","file_id":"29177","access_level":"closed","file_size":3837152,"file_name":"energies-14-00882 Khatibi Krauter MERRA 2.pdf","date_updated":"2022-01-06T13:33:09Z","relation":"main_file"}],"abstract":[{"text":"<jats:p>Fast-growing energy demand of the world makes the researchers focus on finding new energy sources or optimizing already-developed approaches. For an efficient use of solar and wind energy in an energy system, correct design and sizing of a power system is of high importance and improving or optimizing the process of data obtaining for this purpose leads to higher performance and lower cost per unit of energy. It is essential to have the most precise possible estimation of solar and wind energy potential and other local weather parameters in order to fully feed the demand and avoid extra costs. There are various methods for obtaining local data, such as local measurements, official organizational data, satellite obtained, and reanalysis data. In this paper, the Modern-Era Retrospective analysis for Research and Applications dataset version 2 (MERRA-2) dataset provided by NASA is introduced and its performance is evaluated by comparison to various locally measured datasets offered by meteorological institutions such as Meteonorm and Deutscher Wetterdienst (DWD, or Germany’s National Meteorological Service) around the world. After comparison, correlation coefficients from 0.95 to 0.99 are observed for monthly global horizontal irradiance values. In the case of air temperature, correlation coefficients of 0.99 and for wind speed from 0.81 to 0.99 are observed. High correlation with ground measurements and relatively low errors are confirmed, especially for irradiance and temperature values, that makes MERRA-2 a valuable dataset, considering its world coverage and availability.</jats:p>","lang":"eng"}],"issue":"4","publication":"Energies","doi":"10.3390/en14040882","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.mdpi.com/1996-1073/14/4/882/htm","open_access":"1"}],"article_number":"882","intvolume":"        14","article_type":"original","date_updated":"2022-01-06T13:37:34Z","publication_status":"published","publication_identifier":{"issn":["1996-1073"]},"author":[{"first_name":"Arash","last_name":"Khatibi","full_name":"Khatibi, Arash","id":"43538"},{"full_name":"Krauter, Stefan","orcid":"0000-0002-3594-260X","first_name":"Stefan","last_name":"Krauter","id":"28836"}],"title":"Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications","year":"2021","oa":"1","quality_controlled":"1","citation":{"short":"A. Khatibi, S. Krauter, Energies 14 (2021).","chicago":"Khatibi, Arash, and Stefan Krauter. “Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications.” <i>Energies</i> 14, no. 4 (2021). <a href=\"https://doi.org/10.3390/en14040882\">https://doi.org/10.3390/en14040882</a>.","ieee":"A. Khatibi and S. Krauter, “Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications,” <i>Energies</i>, vol. 14, no. 4, Art. no. 882, 2021, doi: <a href=\"https://doi.org/10.3390/en14040882\">10.3390/en14040882</a>.","apa":"Khatibi, A., &#38; Krauter, S. (2021). Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications. <i>Energies</i>, <i>14</i>(4), Article 882. <a href=\"https://doi.org/10.3390/en14040882\">https://doi.org/10.3390/en14040882</a>","bibtex":"@article{Khatibi_Krauter_2021, title={Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/en14040882\">10.3390/en14040882</a>}, number={4882}, journal={Energies}, publisher={MDPI}, author={Khatibi, Arash and Krauter, Stefan}, year={2021} }","ama":"Khatibi A, Krauter S. Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications. <i>Energies</i>. 2021;14(4). doi:<a href=\"https://doi.org/10.3390/en14040882\">10.3390/en14040882</a>","mla":"Khatibi, Arash, and Stefan Krauter. “Validation and Performance of Satellite Meteorological Dataset MERRA-2 for Solar and Wind Applications.” <i>Energies</i>, vol. 14, no. 4, 882, MDPI, 2021, doi:<a href=\"https://doi.org/10.3390/en14040882\">10.3390/en14040882</a>."},"file_date_updated":"2022-01-06T13:33:09Z","volume":14,"ddc":["620"],"user_id":"28836","publisher":"MDPI","_id":"21265","has_accepted_license":"1","status":"public"},{"project":[{"_id":"106","name":"Algorithmen für Schwarmrobotik: Verteiltes Rechnen trifft Dynamische Systeme"}],"citation":{"short":"J. Castenow, T. Götte, T. Knollmann, F. Meyer auf der Heide, in: C. Johnen, E.M. Schiller, S. Schmid (Eds.), Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021, Springer, 2021, pp. 289–304.","ama":"Castenow J, Götte T, Knollmann T, Meyer auf der Heide F. The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation. In: Johnen C, Schiller EM, Schmid S, eds. <i>Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021</i>. Vol 13046. LNCS. Springer; 2021:289-304. doi:<a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">10.1007/978-3-030-91081-5_19</a>","chicago":"Castenow, Jannik, Thorsten Götte, Till Knollmann, and Friedhelm Meyer auf der Heide. “The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation.” In <i>Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021</i>, edited by C. Johnen, E.M. Schiller, and S. Schmid, 13046:289–304. LNCS. Springer, 2021. <a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">https://doi.org/10.1007/978-3-030-91081-5_19</a>.","bibtex":"@inproceedings{Castenow_Götte_Knollmann_Meyer auf der Heide_2021, series={LNCS}, title={The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation}, volume={13046}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">10.1007/978-3-030-91081-5_19</a>}, booktitle={Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021}, publisher={Springer}, author={Castenow, Jannik and Götte, Thorsten and Knollmann, Till and Meyer auf der Heide, Friedhelm}, editor={Johnen, C. and Schiller, E.M. and Schmid, S.}, year={2021}, pages={289–304}, collection={LNCS} }","apa":"Castenow, J., Götte, T., Knollmann, T., &#38; Meyer auf der Heide, F. (2021). The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation. In C. Johnen, E. M. Schiller, &#38; S. Schmid (Eds.), <i>Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021</i> (Vol. 13046, pp. 289–304). Springer. <a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">https://doi.org/10.1007/978-3-030-91081-5_19</a>","mla":"Castenow, Jannik, et al. “The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation.” <i>Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021</i>, edited by C. Johnen et al., vol. 13046, Springer, 2021, pp. 289–304, doi:<a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">10.1007/978-3-030-91081-5_19</a>.","ieee":"J. Castenow, T. Götte, T. Knollmann, and F. Meyer auf der Heide, “The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation,” in <i>Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021</i>, Online, 2021, vol. 13046, pp. 289–304, doi: <a href=\"https://doi.org/10.1007/978-3-030-91081-5_19\">10.1007/978-3-030-91081-5_19</a>."},"external_id":{"arxiv":["2109.11856"]},"conference":{"end_date":"2021-11-20","start_date":"2021-11-17","name":"23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems","location":"Online"},"status":"public","volume":13046,"editor":[{"full_name":"Johnen, C.","last_name":"Johnen","first_name":"C."},{"last_name":"Schiller","first_name":"E.M.","full_name":"Schiller, E.M."},{"last_name":"Schmid","first_name":"S.","full_name":"Schmid, S."}],"user_id":"38705","_id":"26986","publisher":"Springer","page":"289-304 ","publication":"Proceedings of the 23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021","department":[{"_id":"63"}],"type":"conference","date_created":"2021-10-28T07:01:30Z","intvolume":"     13046","publication_status":"published","date_updated":"2022-01-07T15:24:10Z","author":[{"id":"38705","first_name":"Jannik","last_name":"Castenow","full_name":"Castenow, Jannik"},{"first_name":"Thorsten","last_name":"Götte","full_name":"Götte, Thorsten","id":"34727"},{"id":"39241","orcid":"0000-0003-2014-4696","last_name":"Knollmann","first_name":"Till","full_name":"Knollmann, Till"},{"id":"15523","first_name":"Friedhelm","last_name":"Meyer auf der Heide","full_name":"Meyer auf der Heide, Friedhelm"}],"year":"2021","title":"The Max-Line-Formation Problem – And New Insights for Gathering and Chain-Formation","doi":"10.1007/978-3-030-91081-5_19","series_title":"LNCS","language":[{"iso":"eng"}]},{"status":"public","user_id":"15931","volume":68,"page":"3668-3681","_id":"29210","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","citation":{"mla":"Wu, Liang, and J. Christoph Scheytt. “Analysis and Design of a Charge Sampler With 70-GHz 1-DB Bandwidth in 130-Nm SiGe BiCMOS.” <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i>, vol. 68, no. 9, Institute of Electrical and Electronics Engineers (IEEE), 2021, pp. 3668–81, doi:<a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">10.1109/tcsi.2021.3094428</a>.","bibtex":"@article{Wu_Scheytt_2021, title={Analysis and Design of a Charge Sampler With 70-GHz 1-dB Bandwidth in 130-nm SiGe BiCMOS}, volume={68}, DOI={<a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">10.1109/tcsi.2021.3094428</a>}, number={9}, journal={IEEE Transactions on Circuits and Systems I: Regular Papers}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Wu, Liang and Scheytt, J. Christoph}, year={2021}, pages={3668–3681} }","ama":"Wu L, Scheytt JC. Analysis and Design of a Charge Sampler With 70-GHz 1-dB Bandwidth in 130-nm SiGe BiCMOS. <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i>. 2021;68(9):3668-3681. doi:<a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">10.1109/tcsi.2021.3094428</a>","ieee":"L. Wu and J. C. Scheytt, “Analysis and Design of a Charge Sampler With 70-GHz 1-dB Bandwidth in 130-nm SiGe BiCMOS,” <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i>, vol. 68, no. 9, pp. 3668–3681, 2021, doi: <a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">10.1109/tcsi.2021.3094428</a>.","apa":"Wu, L., &#38; Scheytt, J. C. (2021). Analysis and Design of a Charge Sampler With 70-GHz 1-dB Bandwidth in 130-nm SiGe BiCMOS. <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i>, <i>68</i>(9), 3668–3681. <a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">https://doi.org/10.1109/tcsi.2021.3094428</a>","short":"L. Wu, J.C. Scheytt, IEEE Transactions on Circuits and Systems I: Regular Papers 68 (2021) 3668–3681.","chicago":"Wu, Liang, and J. Christoph Scheytt. “Analysis and Design of a Charge Sampler With 70-GHz 1-DB Bandwidth in 130-Nm SiGe BiCMOS.” <i>IEEE Transactions on Circuits and Systems I: Regular Papers</i> 68, no. 9 (2021): 3668–81. <a href=\"https://doi.org/10.1109/tcsi.2021.3094428\">https://doi.org/10.1109/tcsi.2021.3094428</a>."},"publication_status":"published","date_updated":"2022-01-10T13:53:08Z","intvolume":"        68","year":"2021","title":"Analysis and Design of a Charge Sampler With 70-GHz 1-dB Bandwidth in 130-nm SiGe BiCMOS","publication_identifier":{"issn":["1549-8328","1558-0806"]},"author":[{"first_name":"Liang","last_name":"Wu","full_name":"Wu, Liang","id":"30401"},{"first_name":"J. Christoph","last_name":"Scheytt","full_name":"Scheytt, J. Christoph","id":"37144"}],"doi":"10.1109/tcsi.2021.3094428","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"This paper investigates an ultra-broadband sampling technique based on charge sampling using an Integrate-and-Hold Circuit (IHC) and ultra-short integration times. The charge sampling technique is mathematically analyzed in detail and compared to conventional switched-capacitor sampling. The mathematical analysis allows to predict the sampler bandwidth as well as the degradation of sampling precision due to analog circuit impairments such as integrator gain error, integration capacitor leakage, hold-mode droop, thermal noise, and clock jitter. Furthermore, design, simulation, and measurement results of an ultra-broadband charge sampler IC in SiGe BiCMOS technology are presented. The charge sampler IC achieves a 1dB bandwidth of 70 GHz. A resolution of better than 5.9 effective number of bits (ENOB) is measured from 0 to 70 GHz at a sampling rate of 5 GS/s. The results suggest that charge sampling using an IHC is a viable concept for ultra-broadband sampling."}],"related_material":{"link":[{"relation":"confirmation","url":"https://ieeexplore.ieee.org/document/9482511/authors#authors"}]},"publication":"IEEE Transactions on Circuits and Systems I: Regular Papers","issue":"9","keyword":["Electrical and Electronic Engineering"],"type":"journal_article","department":[{"_id":"58"}],"date_created":"2022-01-10T13:51:36Z"}]