[{"date_created":"2020-09-21T10:01:36Z","type":"preprint","oa":"1","publication":"arXiv:2005.04869","citation":{"ama":"Bode H, Heid SH, Weber D, Hüllermeier E, Wallscheid O. Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control. <i>arXiv:200504869</i>. 2020.","bibtex":"@article{Bode_Heid_Weber_Hüllermeier_Wallscheid_2020, title={Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control}, journal={arXiv:2005.04869}, author={Bode, Henrik and Heid, Stefan Helmut and Weber, Daniel and Hüllermeier, Eyke and Wallscheid, Oliver}, year={2020} }","mla":"Bode, Henrik, et al. “Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control.” <i>ArXiv:2005.04869</i>, 2020.","chicago":"Bode, Henrik, Stefan Helmut Heid, Daniel Weber, Eyke Hüllermeier, and Oliver Wallscheid. “Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control.” <i>ArXiv:2005.04869</i>, 2020.","short":"H. Bode, S.H. Heid, D. Weber, E. Hüllermeier, O. Wallscheid, ArXiv:2005.04869 (2020).","apa":"Bode, H., Heid, S. H., Weber, D., Hüllermeier, E., &#38; Wallscheid, O. (2020). Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control. <i>ArXiv:2005.04869</i>.","ieee":"H. Bode, S. H. Heid, D. Weber, E. Hüllermeier, and O. Wallscheid, “Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control,” <i>arXiv:2005.04869</i>. 2020."},"abstract":[{"lang":"eng","text":"Micro- and smart grids (MSG) play an important role both for integrating\r\nrenewable energy sources in conventional electricity grids and for providing\r\npower supply in remote areas. Modern MSGs are largely driven by power\r\nelectronic converters due to their high efficiency and flexibility.\r\nNevertheless, controlling MSGs is a challenging task due to highest\r\nrequirements on energy availability, safety and voltage quality within a wide\r\nrange of different MSG topologies. This results in a high demand for\r\ncomprehensive testing of new control concepts during their development phase\r\nand comparisons with the state of the art in order to ensure their feasibility.\r\nThis applies in particular to data-driven control approaches from the field of\r\nreinforcement learning (RL), whose stability and operating behavior can hardly\r\nbe evaluated a priori. Therefore, the OpenModelica Microgrid Gym (OMG) package,\r\nan open-source software toolbox for the simulation and control optimization of\r\nMSGs, is proposed. It is capable of modeling and simulating arbitrary MSG\r\ntopologies and offers a Python-based interface for plug \\& play controller\r\ntesting. In particular, the standardized OpenAI Gym interface allows for easy\r\nRL-based controller integration. Besides the presentation of the OMG toolbox,\r\napplication examples are highlighted including safe Bayesian optimization for\r\nlow-level controller tuning."}],"main_file_link":[{"url":"https://arxiv.org/pdf/2005.04869.pdf","open_access":"1"}],"_id":"19603","language":[{"iso":"eng"}],"user_id":"39640","status":"public","title":"Towards a Scalable and Flexible Simulation and Testing Environment  Toolbox for Intelligent Microgrid Control","year":"2020","author":[{"full_name":"Bode, Henrik","last_name":"Bode","first_name":"Henrik"},{"orcid":"0000-0002-9461-7372","last_name":"Heid","first_name":"Stefan Helmut","full_name":"Heid, Stefan Helmut","id":"39640"},{"last_name":"Weber","first_name":"Daniel","full_name":"Weber, Daniel"},{"id":"48129","last_name":"Hüllermeier","first_name":"Eyke","full_name":"Hüllermeier, Eyke"},{"full_name":"Wallscheid, Oliver","first_name":"Oliver","last_name":"Wallscheid"}],"date_updated":"2022-01-06T06:54:07Z"},{"user_id":"47208","ddc":["000"],"volume":12481,"editor":[{"full_name":"Bernhaupt, Regina","first_name":"Regina","last_name":"Bernhaupt"},{"first_name":"Carmelo","last_name":"Ardito","full_name":"Ardito, Carmelo"},{"last_name":"Sauer","first_name":"Stefan","full_name":"Sauer, Stefan"}],"publisher":"Springer","_id":"19606","has_accepted_license":"1","status":"public","conference":{"end_date":"2020-12-02","name":"8th International Working Conference on Human-Centered Software Engineering (HCSE'20)","start_date":"2020-11-30","location":"Eindhoven"},"oa":"1","place":"Cham","project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - Subproject C5","_id":"17"}],"file_date_updated":"2020-11-30T08:39:18Z","citation":{"mla":"Gottschalk, Sebastian, et al. “ProConAR: A Tool Support for Model-Based AR Product Configuration.” <i>Human-Centered Software Engineering. HCSE 2020</i>, edited by Regina Bernhaupt et al., vol. 12481, Springer, 2020, doi:<a href=\"https://doi.org/10.1007/978-3-030-64266-2_14\">10.1007/978-3-030-64266-2_14</a>.","apa":"Gottschalk, S., Yigitbas, E., Schmidt, E., &#38; Engels, G. (2020). ProConAR: A Tool Support for Model-based AR Product Configuration. In R. Bernhaupt, C. Ardito, &#38; S. Sauer (Eds.), <i>Human-Centered Software Engineering. HCSE 2020</i> (Vol. 12481). Cham: Springer. <a href=\"https://doi.org/10.1007/978-3-030-64266-2_14\">https://doi.org/10.1007/978-3-030-64266-2_14</a>","ieee":"S. Gottschalk, E. Yigitbas, E. Schmidt, and G. Engels, “ProConAR: A Tool Support for Model-based AR Product Configuration,” in <i>Human-Centered Software Engineering. HCSE 2020</i>, Eindhoven, 2020, vol. 12481.","ama":"Gottschalk S, Yigitbas E, Schmidt E, Engels G. ProConAR: A Tool Support for Model-based AR Product Configuration. In: Bernhaupt R, Ardito C, Sauer S, eds. <i>Human-Centered Software Engineering. HCSE 2020</i>. Vol 12481. Lecture Notes in Computer Science. Cham: Springer; 2020. doi:<a href=\"https://doi.org/10.1007/978-3-030-64266-2_14\">10.1007/978-3-030-64266-2_14</a>","short":"S. Gottschalk, E. Yigitbas, E. Schmidt, G. Engels, in: R. Bernhaupt, C. Ardito, S. Sauer (Eds.), Human-Centered Software Engineering. HCSE 2020, Springer, Cham, 2020.","chicago":"Gottschalk, Sebastian, Enes Yigitbas, Eugen Schmidt, and Gregor Engels. “ProConAR: A Tool Support for Model-Based AR Product Configuration.” In <i>Human-Centered Software Engineering. HCSE 2020</i>, edited by Regina Bernhaupt, Carmelo Ardito, and Stefan Sauer, Vol. 12481. Lecture Notes in Computer Science. Cham: Springer, 2020. <a href=\"https://doi.org/10.1007/978-3-030-64266-2_14\">https://doi.org/10.1007/978-3-030-64266-2_14</a>.","bibtex":"@inproceedings{Gottschalk_Yigitbas_Schmidt_Engels_2020, place={Cham}, series={Lecture Notes in Computer Science}, title={ProConAR: A Tool Support for Model-based AR Product Configuration}, volume={12481}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-64266-2_14\">10.1007/978-3-030-64266-2_14</a>}, booktitle={Human-Centered Software Engineering. HCSE 2020}, publisher={Springer}, author={Gottschalk, Sebastian and Yigitbas, Enes and Schmidt, Eugen and Engels, Gregor}, editor={Bernhaupt, Regina and Ardito, Carmelo and Sauer, StefanEditors}, year={2020}, collection={Lecture Notes in Computer Science} }"},"doi":"10.1007/978-3-030-64266-2_14","language":[{"iso":"eng"}],"series_title":"Lecture Notes in Computer Science","date_updated":"2022-01-06T06:54:07Z","intvolume":"     12481","title":"ProConAR: A Tool Support for Model-based AR Product Configuration","year":"2020","author":[{"id":"47208","first_name":"Sebastian","last_name":"Gottschalk","full_name":"Gottschalk, Sebastian"},{"id":"8447","last_name":"Yigitbas","first_name":"Enes","orcid":"0000-0002-5967-833X","full_name":"Yigitbas, Enes"},{"full_name":"Schmidt, Eugen","last_name":"Schmidt","first_name":"Eugen"},{"full_name":"Engels, Gregor","first_name":"Gregor","last_name":"Engels","id":"107"}],"type":"conference","keyword":["Product Configuration","Augmented Reality","Model-based","Tool Support"],"department":[{"_id":"66"},{"_id":"534"}],"file":[{"creator":"sego","date_created":"2020-11-30T08:39:18Z","file_name":"HCSE20_demo.pdf","file_size":3913885,"access_level":"open_access","relation":"main_file","date_updated":"2020-11-30T08:39:18Z","file_id":"20542","content_type":"application/pdf"}],"date_created":"2020-09-21T17:01:11Z","abstract":[{"lang":"eng","text":"Mobile shopping apps have been using Augmented Reality (AR) in the last years to place their products in the environment of the customer. While this is possible with atomic 3D objects, there is is still a lack in the runtime configuration of 3D object compositions based on user needs and environmental constraints. For this, we previously developed an approach for model-based AR-assisted product configuration based on the concept of Dynamic Software Product Lines. In this demonstration paper, we present the corresponding tool support ProConAR in the form of a Product Modeler and a Product Configurator. While the Product Modeler is an Angular web app that splits products (e.g. table) up into atomic parts (e.g. tabletop, table legs, funnier) and saves it within a configuration model, the Product Configurator is an Android client that uses the configuration model to place different product configurations within the environment of the customer. We show technical details of our ready to use tool-chain ProConAR by describing its implementation and usage as well as pointing out future research directions."}],"publication":"Human-Centered Software Engineering. HCSE 2020"},{"abstract":[{"lang":"eng","text":"Modern services consist of modular, interconnected\r\ncomponents, e.g., microservices forming a service mesh. To\r\ndynamically adjust to ever-changing service demands, service\r\ncomponents have to be instantiated on nodes across the network.\r\nIncoming flows requesting a service then need to be routed\r\nthrough the deployed instances while considering node and link\r\ncapacities. Ultimately, the goal is to maximize the successfully\r\nserved flows and Quality of Service (QoS) through online service\r\ncoordination. Current approaches for service coordination are\r\nusually centralized, assuming up-to-date global knowledge and\r\nmaking global decisions for all nodes in the network. Such global\r\nknowledge and centralized decisions are not realistic in practical\r\nlarge-scale networks.\r\n\r\nTo solve this problem, we propose two algorithms for fully\r\ndistributed service coordination. The proposed algorithms can be\r\nexecuted individually at each node in parallel and require only\r\nvery limited global knowledge. We compare and evaluate both\r\nalgorithms with a state-of-the-art centralized approach in extensive\r\nsimulations on a large-scale, real-world network topology.\r\nOur results indicate that the two algorithms can compete with\r\ncentralized approaches in terms of solution quality but require\r\nless global knowledge and are magnitudes faster (more than\r\n100x)."}],"publication":"IEEE International Conference on Network and Service Management (CNSM)","department":[{"_id":"75"}],"keyword":["distributed management","service coordination","network coordination","nfv","softwarization","orchestration"],"type":"conference","date_created":"2020-09-22T06:23:40Z","file":[{"content_type":"application/pdf","file_id":"19608","date_updated":"2020-09-22T06:36:25Z","relation":"main_file","access_level":"open_access","file_size":500948,"file_name":"ris_with_copyright.pdf","date_created":"2020-09-22T06:25:57Z","creator":"stschn"}],"date_updated":"2022-01-06T06:54:08Z","author":[{"full_name":"Schneider, Stefan Balthasar","first_name":"Stefan Balthasar","orcid":"0000-0001-8210-4011","last_name":"Schneider","id":"35343"},{"full_name":"Klenner, Lars Dietrich","first_name":"Lars Dietrich","last_name":"Klenner"},{"first_name":"Holger","last_name":"Karl","full_name":"Karl, Holger","id":"126"}],"year":"2020","title":"Every Node for Itself: Fully Distributed Service Coordination","language":[{"iso":"eng"}],"project":[{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"citation":{"apa":"Schneider, S. B., Klenner, L. D., &#38; Karl, H. (2020). Every Node for Itself: Fully Distributed Service Coordination. In <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE.","ieee":"S. B. Schneider, L. D. Klenner, and H. Karl, “Every Node for Itself: Fully Distributed Service Coordination,” in <i>IEEE International Conference on Network and Service Management (CNSM)</i>, 2020.","short":"S.B. Schneider, L.D. Klenner, H. Karl, in: IEEE International Conference on Network and Service Management (CNSM), IEEE, 2020.","chicago":"Schneider, Stefan Balthasar, Lars Dietrich Klenner, and Holger Karl. “Every Node for Itself: Fully Distributed Service Coordination.” In <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE, 2020.","mla":"Schneider, Stefan Balthasar, et al. “Every Node for Itself: Fully Distributed Service Coordination.” <i>IEEE International Conference on Network and Service Management (CNSM)</i>, IEEE, 2020.","ama":"Schneider SB, Klenner LD, Karl H. Every Node for Itself: Fully Distributed Service Coordination. In: <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE; 2020.","bibtex":"@inproceedings{Schneider_Klenner_Karl_2020, title={Every Node for Itself: Fully Distributed Service Coordination}, booktitle={IEEE International Conference on Network and Service Management (CNSM)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Klenner, Lars Dietrich and Karl, Holger}, year={2020} }"},"file_date_updated":"2020-09-22T06:36:25Z","oa":"1","has_accepted_license":"1","status":"public","user_id":"35343","ddc":["006"],"publisher":"IEEE","_id":"19607"},{"date_updated":"2022-01-06T06:54:08Z","author":[{"last_name":"Schneider","orcid":"0000-0001-8210-4011","first_name":"Stefan Balthasar","full_name":"Schneider, Stefan Balthasar","id":"35343"},{"first_name":"Adnan","last_name":"Manzoor","full_name":"Manzoor, Adnan"},{"first_name":"Haydar","last_name":"Qarawlus","full_name":"Qarawlus, Haydar"},{"first_name":"Rafael","last_name":"Schellenberg","full_name":"Schellenberg, Rafael"},{"id":"126","full_name":"Karl, Holger","last_name":"Karl","first_name":"Holger"},{"full_name":"Khalili, Ramin","first_name":"Ramin","last_name":"Khalili"},{"full_name":"Hecker, Artur","last_name":"Hecker","first_name":"Artur"}],"year":"2020","title":"Self-Driving Network and Service Coordination Using Deep Reinforcement Learning","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Modern services comprise interconnected components,\r\ne.g., microservices in a service mesh, that can scale and\r\nrun on multiple nodes across the network on demand. To process\r\nincoming traffic, service components have to be instantiated and\r\ntraffic assigned to these instances, taking capacities and changing\r\ndemands into account. This challenge is usually solved with\r\ncustom approaches designed by experts. While this typically\r\nworks well for the considered scenario, the models often rely\r\non unrealistic assumptions or on knowledge that is not available\r\nin practice (e.g., a priori knowledge).\r\n\r\nWe propose a novel deep reinforcement learning approach that\r\nlearns how to best coordinate services and is geared towards\r\nrealistic assumptions. It interacts with the network and relies on\r\navailable, possibly delayed monitoring information. Rather than\r\ndefining a complex model or an algorithm how to achieve an\r\nobjective, our model-free approach adapts to various objectives\r\nand traffic patterns. An agent is trained offline without expert\r\nknowledge and then applied online with minimal overhead. Compared\r\nto a state-of-the-art heuristic, it significantly improves flow\r\nthroughput and overall network utility on real-world network\r\ntopologies and traffic traces. It also learns to optimize different\r\nobjectives, generalizes to scenarios with unseen, stochastic traffic\r\npatterns, and scales to large real-world networks."}],"publication":"IEEE International Conference on Network and Service Management (CNSM)","department":[{"_id":"75"}],"keyword":["self-driving networks","self-learning","network coordination","service coordination","reinforcement learning","deep learning","nfv"],"type":"conference","date_created":"2020-09-22T06:28:22Z","file":[{"date_created":"2020-09-22T06:29:16Z","creator":"stschn","file_id":"19610","content_type":"application/pdf","relation":"main_file","date_updated":"2020-09-22T06:36:00Z","file_name":"ris_with_copyright.pdf","file_size":642999,"access_level":"open_access"}],"has_accepted_license":"1","status":"public","ddc":["006"],"user_id":"35343","publisher":"IEEE","_id":"19609","project":[{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"citation":{"ieee":"S. B. Schneider <i>et al.</i>, “Self-Driving Network and Service Coordination Using Deep Reinforcement Learning,” in <i>IEEE International Conference on Network and Service Management (CNSM)</i>, 2020.","apa":"Schneider, S. B., Manzoor, A., Qarawlus, H., Schellenberg, R., Karl, H., Khalili, R., &#38; Hecker, A. (2020). Self-Driving Network and Service Coordination Using Deep Reinforcement Learning. In <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE.","short":"S.B. Schneider, A. Manzoor, H. Qarawlus, R. Schellenberg, H. Karl, R. Khalili, A. Hecker, in: IEEE International Conference on Network and Service Management (CNSM), IEEE, 2020.","chicago":"Schneider, Stefan Balthasar, Adnan Manzoor, Haydar Qarawlus, Rafael Schellenberg, Holger Karl, Ramin Khalili, and Artur Hecker. “Self-Driving Network and Service Coordination Using Deep Reinforcement Learning.” In <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE, 2020.","mla":"Schneider, Stefan Balthasar, et al. “Self-Driving Network and Service Coordination Using Deep Reinforcement Learning.” <i>IEEE International Conference on Network and Service Management (CNSM)</i>, IEEE, 2020.","bibtex":"@inproceedings{Schneider_Manzoor_Qarawlus_Schellenberg_Karl_Khalili_Hecker_2020, title={Self-Driving Network and Service Coordination Using Deep Reinforcement Learning}, booktitle={IEEE International Conference on Network and Service Management (CNSM)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Manzoor, Adnan and Qarawlus, Haydar and Schellenberg, Rafael and Karl, Holger and Khalili, Ramin and Hecker, Artur}, year={2020} }","ama":"Schneider SB, Manzoor A, Qarawlus H, et al. Self-Driving Network and Service Coordination Using Deep Reinforcement Learning. In: <i>IEEE International Conference on Network and Service Management (CNSM)</i>. IEEE; 2020."},"file_date_updated":"2020-09-22T06:36:00Z","oa":"1"},{"volume":33,"user_id":"85279","_id":"19939","page":"2335-2363","status":"public","oa":"1","citation":{"mla":"Kreusser, Lisa Maria, et al. “Detection of High Codimensional Bifurcations in Variational PDEs.” <i>Nonlinearity</i>, vol. 33, no. 5, 2020, pp. 2335–63, doi:<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>.","ama":"Kreusser LM, McLachlan RI, Offen C. Detection of high codimensional bifurcations in variational PDEs. <i>Nonlinearity</i>. 2020;33(5):2335-2363. doi:<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>","bibtex":"@article{Kreusser_McLachlan_Offen_2020, title={Detection of high codimensional bifurcations in variational PDEs}, volume={33}, DOI={<a href=\"https://doi.org/10.1088/1361-6544/ab7293\">10.1088/1361-6544/ab7293</a>}, number={5}, journal={Nonlinearity}, author={Kreusser, Lisa Maria and McLachlan, Robert I and Offen, Christian}, year={2020}, pages={2335–2363} }","apa":"Kreusser, L. M., McLachlan, R. I., &#38; Offen, C. (2020). Detection of high codimensional bifurcations in variational PDEs. <i>Nonlinearity</i>, <i>33</i>(5), 2335–2363. <a href=\"https://doi.org/10.1088/1361-6544/ab7293\">https://doi.org/10.1088/1361-6544/ab7293</a>","ieee":"L. M. Kreusser, R. I. McLachlan, and C. Offen, “Detection of high codimensional bifurcations in variational PDEs,” <i>Nonlinearity</i>, vol. 33, no. 5, pp. 2335–2363, 2020.","short":"L.M. Kreusser, R.I. McLachlan, C. Offen, Nonlinearity 33 (2020) 2335–2363.","chicago":"Kreusser, Lisa Maria, Robert I McLachlan, and Christian Offen. “Detection of High Codimensional Bifurcations in Variational PDEs.” <i>Nonlinearity</i> 33, no. 5 (2020): 2335–63. <a href=\"https://doi.org/10.1088/1361-6544/ab7293\">https://doi.org/10.1088/1361-6544/ab7293</a>."},"doi":"10.1088/1361-6544/ab7293","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1088/1361-6544/ab7293"}],"article_type":"original","intvolume":"        33","publication_status":"published","date_updated":"2022-01-06T06:54:14Z","publication_identifier":{"issn":["0951-7715","1361-6544"]},"author":[{"last_name":"Kreusser","first_name":"Lisa Maria","full_name":"Kreusser, Lisa Maria"},{"first_name":"Robert I","last_name":"McLachlan","full_name":"McLachlan, Robert I"},{"last_name":"Offen","first_name":"Christian","orcid":"https://orcid.org/0000-0002-5940-8057","full_name":"Offen, Christian","id":"85279"}],"year":"2020","title":"Detection of high codimensional bifurcations in variational PDEs","department":[{"_id":"636"}],"type":"journal_article","date_created":"2020-10-06T16:32:04Z","extern":"1","issue":"5","publication":"Nonlinearity"},{"ddc":["510"],"user_id":"85279","publisher":"Massey University","_id":"19947","has_accepted_license":"1","status":"public","oa":"1","place":"Palmerston North, New Zealand","file_date_updated":"2020-10-07T14:01:58Z","supervisor":[{"first_name":"Robert I","last_name":"McLachlan","full_name":"McLachlan, Robert I"}],"citation":{"ieee":"C. Offen, <i>Analysis of Hamiltonian boundary value problems and symplectic integration</i>. Palmerston North, New Zealand: Massey University, 2020.","apa":"Offen, C. (2020). <i>Analysis of Hamiltonian boundary value problems and symplectic integration</i>. Palmerston North, New Zealand: Massey University.","short":"C. Offen, Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration, Massey University, Palmerston North, New Zealand, 2020.","chicago":"Offen, Christian. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Palmerston North, New Zealand: Massey University, 2020.","mla":"Offen, Christian. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Massey University, 2020.","bibtex":"@book{Offen_2020, place={Palmerston North, New Zealand}, title={Analysis of Hamiltonian boundary value problems and symplectic integration}, publisher={Massey University}, author={Offen, Christian}, year={2020} }","ama":"Offen C. <i>Analysis of Hamiltonian Boundary Value Problems and Symplectic Integration</i>. Palmerston North, New Zealand: Massey University; 2020."},"alternative_title":["A thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Mathematics at Massey University, Manawatū, New Zealand."],"main_file_link":[{"url":"https://hdl.handle.net/10179/16155","open_access":"1"}],"language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:54:16Z","publication_status":"published","year":"2020","title":"Analysis of Hamiltonian boundary value problems and symplectic integration","author":[{"id":"85279","full_name":"Offen, Christian","orcid":"https://orcid.org/0000-0002-5940-8057","last_name":"Offen","first_name":"Christian"}],"type":"dissertation","file":[{"description":"A thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in\nMathematics at Massey University, Manawatū, New Zealand.","date_created":"2020-10-06T18:54:53Z","creator":"coffen","title":"Thesis Christian Offen","file_id":"19948","content_type":"application/pdf","relation":"main_file","date_updated":"2020-10-07T14:01:58Z","file_name":"ths_all_signatures.pdf","access_level":"open_access","file_size":19465740}],"date_created":"2020-10-06T18:56:44Z","abstract":[{"lang":"eng","text":"Ordinary differential equations (ODEs) and partial differential equations (PDEs) arise\r\nin most scientific disciplines that make use of mathematical techniques. As exact solutions are in general not computable, numerical methods are used to obtain approximate\r\nsolutions. In order to draw valid conclusions from numerical computations, it is crucial\r\nto understand which qualitative aspects numerical solutions have in common with the\r\nexact solution. Symplecticity is a subtle notion that is related to a rich family of geometric properties of Hamiltonian systems. While the effects of preserving symplecticity\r\nunder discretisation on long-term behaviour of motions is classically well known, in this\r\nthesis\r\n(a) the role of symplecticity for the bifurcation behaviour of solutions to Hamiltonian\r\nboundary value problems is explained. In parameter dependent systems at a bifurcation\r\npoint the solution set to a boundary value problem changes qualitatively. Bifurcation\r\nproblems are systematically translated into the framework of classical catastrophe theory. It is proved that existing classification results in catastrophe theory apply to\r\npersistent bifurcations of Hamiltonian boundary value problems. Further results for\r\nsymmetric settings are derived.\r\n(b) It is proved that to preserve generic bifurcations under discretisation it is necessary and sufficient to preserve the symplectic structure of the problem.\r\n(c) The catastrophe theory framework for Hamiltonian ODEs is extended to PDEs\r\nwith variational structure. Recognition equations for A-series singularities for functionals on Banach spaces are derived and used in a numerical example to locate high-codimensional bifurcations.\r\n(d) The potential of symplectic integration for infinite-dimensional Lie-Poisson systems (Burgers’ equation, KdV, fluid equations, . . . ) using Clebsch variables is analysed.\r\nIt is shown that the advantages of symplectic integration can outweigh the disadvantages of integrating over a larger phase space introduced by a Clebsch representation.\r\n(e) Finally, the preservation of variational structure of symmetric solutions in multisymplectic PDEs by multisymplectic integrators on the example of (phase-rotating)\r\ntravelling waves in the nonlinear wave equation is discussed."}],"extern":"1"},{"oa":"1","place":"Bangkok, Thailand","external_id":{"arxiv":["2007.00346"]},"quality_controlled":"1","citation":{"chicago":"Damke, Clemens, Vitaly Melnikov, and Eyke Hüllermeier. “A Novel Higher-Order Weisfeiler-Lehman Graph Convolution.” In <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, edited by Sinno Jialin Pan and Masashi Sugiyama, 129:49–64. Proceedings of Machine Learning Research. Bangkok, Thailand: PMLR, 2020.","short":"C. Damke, V. Melnikov, E. Hüllermeier, in: S. Jialin Pan, M. Sugiyama (Eds.), Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020), PMLR, Bangkok, Thailand, 2020, pp. 49–64.","apa":"Damke, C., Melnikov, V., &#38; Hüllermeier, E. (2020). A Novel Higher-order Weisfeiler-Lehman Graph Convolution. In S. Jialin Pan &#38; M. Sugiyama (Eds.), <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i> (Vol. 129, pp. 49–64). Bangkok, Thailand: PMLR.","ieee":"C. Damke, V. Melnikov, and E. Hüllermeier, “A Novel Higher-order Weisfeiler-Lehman Graph Convolution,” in <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, Bangkok, Thailand, 2020, vol. 129, pp. 49–64.","ama":"Damke C, Melnikov V, Hüllermeier E. A Novel Higher-order Weisfeiler-Lehman Graph Convolution. In: Jialin Pan S, Sugiyama M, eds. <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>. Vol 129. Proceedings of Machine Learning Research. Bangkok, Thailand: PMLR; 2020:49-64.","bibtex":"@inproceedings{Damke_Melnikov_Hüllermeier_2020, place={Bangkok, Thailand}, series={Proceedings of Machine Learning Research}, title={A Novel Higher-order Weisfeiler-Lehman Graph Convolution}, volume={129}, booktitle={Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)}, publisher={PMLR}, author={Damke, Clemens and Melnikov, Vitaly and Hüllermeier, Eyke}, editor={Jialin Pan, Sinno and Sugiyama, MasashiEditors}, year={2020}, pages={49–64}, collection={Proceedings of Machine Learning Research} }","mla":"Damke, Clemens, et al. “A Novel Higher-Order Weisfeiler-Lehman Graph Convolution.” <i>Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)</i>, edited by Sinno Jialin Pan and Masashi Sugiyama, vol. 129, PMLR, 2020, pp. 49–64."},"file_date_updated":"2020-10-08T11:24:29Z","editor":[{"full_name":"Jialin Pan, Sinno","first_name":"Sinno","last_name":"Jialin Pan"},{"first_name":"Masashi","last_name":"Sugiyama","full_name":"Sugiyama, Masashi"}],"volume":129,"ddc":["006"],"user_id":"48192","publisher":"PMLR","_id":"19953","page":"49-64","has_accepted_license":"1","conference":{"location":"Bangkok, Thailand","name":"Asian Conference on Machine Learning","start_date":"2020-11-18","end_date":"2020-11-20"},"status":"public","department":[{"_id":"355"}],"keyword":["graph neural networks","Weisfeiler-Lehman test","cycle detection"],"type":"conference","date_created":"2020-10-08T10:48:38Z","file":[{"creator":"cdamke","date_created":"2020-10-08T10:54:48Z","file_size":771137,"access_level":"open_access","file_name":"damke20.pdf","date_updated":"2020-10-08T11:21:00Z","relation":"main_file","content_type":"application/pdf","file_id":"19954"},{"creator":"cdamke","date_created":"2020-10-08T10:54:59Z","file_name":"damke20-supp.pdf","access_level":"open_access","file_size":613163,"relation":"supplementary_material","date_updated":"2020-10-08T11:24:29Z","file_id":"19955","content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":"Current GNN architectures use a vertex neighborhood aggregation scheme, which limits their discriminative power to that of the 1-dimensional Weisfeiler-Lehman (WL) graph isomorphism test. Here, we propose a novel graph convolution operator that is based on the 2-dimensional WL test. We formally show that the resulting 2-WL-GNN architecture is more discriminative than existing GNN approaches. This theoretical result is complemented by experimental studies using synthetic and real data. On multiple common graph classification benchmarks, we demonstrate that the proposed model is competitive with state-of-the-art graph kernels and GNNs."}],"publication":"Proceedings of the 12th Asian Conference on Machine Learning (ACML 2020)","series_title":"Proceedings of Machine Learning Research","language":[{"iso":"eng"}],"intvolume":"       129","date_updated":"2022-01-06T06:54:17Z","publication_status":"published","author":[{"id":"48192","full_name":"Damke, Clemens","last_name":"Damke","orcid":"0000-0002-0455-0048","first_name":"Clemens"},{"id":"58747","last_name":"Melnikov","first_name":"Vitaly","full_name":"Melnikov, Vitaly"},{"last_name":"Hüllermeier","first_name":"Eyke","full_name":"Hüllermeier, Eyke","id":"48129"}],"year":"2020","title":"A Novel Higher-order Weisfeiler-Lehman Graph Convolution"},{"type":"conference","department":[{"_id":"600"}],"oa":"1","date_created":"2020-10-20T13:03:08Z","publication":"Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)","citation":{"chicago":"Spliethöver, Maximilian, and Henning Wachsmuth. “Argument from Old Man’s View: Assessing Social Bias in Argumentation.” In <i>Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)</i>, 76–87, 2020.","short":"M. Spliethöver, H. Wachsmuth, in: Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020), 2020, pp. 76–87.","apa":"Spliethöver, M., &#38; Wachsmuth, H. (2020). Argument from Old Man’s View: Assessing Social Bias in Argumentation. In <i>Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)</i> (pp. 76–87).","ieee":"M. Spliethöver and H. Wachsmuth, “Argument from Old Man’s View: Assessing Social Bias in Argumentation,” in <i>Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)</i>, 2020, pp. 76–87.","ama":"Spliethöver M, Wachsmuth H. Argument from Old Man’s View: Assessing Social Bias in Argumentation. In: <i>Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)</i>. ; 2020:76-87.","bibtex":"@inproceedings{Spliethöver_Wachsmuth_2020, title={Argument from Old Man’s View: Assessing Social Bias in Argumentation}, booktitle={Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)}, author={Spliethöver, Maximilian and Wachsmuth, Henning}, year={2020}, pages={76–87} }","mla":"Spliethöver, Maximilian, and Henning Wachsmuth. “Argument from Old Man’s View: Assessing Social Bias in Argumentation.” <i>Proceedings of the 7th Workshop on Argument Mining (ArgMining 2020)</i>, 2020, pp. 76–87."},"user_id":"84035","main_file_link":[{"open_access":"1","url":"https://www.aclweb.org/anthology/2020.argmining-1.9"}],"page":"76-87","_id":"20139","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:54:20Z","year":"2020","title":"Argument from Old Man's View: Assessing Social Bias in Argumentation","status":"public","author":[{"full_name":"Spliethöver, Maximilian","orcid":"0000-0003-4364-1409","last_name":"Spliethöver","first_name":"Maximilian","id":"84035"},{"id":"3900","full_name":"Wachsmuth, Henning","last_name":"Wachsmuth","first_name":"Henning"}]},{"language":[{"iso":"ger"}],"main_file_link":[{"url":"https://umformtechnik.net/blech/Inhalte/Aus-der-Forschung/Spannungszustandsabhaengige-Schaedigungsmodellierung-zum-Halbhohlstanznieten","open_access":"1"}],"publication_identifier":{"issn":["0300-3167"]},"author":[{"orcid":"0000-0002-8652-9209","first_name":"Mortaza","last_name":"Otroshi","full_name":"Otroshi, Mortaza","id":"71269"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","first_name":"Gerson","orcid":"0000-0002-2763-1246"}],"year":"2020","title":"Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten","publication_status":"published","date_updated":"2022-01-06T06:54:21Z","date_created":"2020-10-22T07:31:23Z","file":[{"date_created":"2021-01-12T11:53:09Z","creator":"motroshi","content_type":"application/pdf","file_id":"20898","file_size":1162090,"access_level":"open_access","file_name":"Umformtechnik_BRP_7_2020.pdf","date_updated":"2021-01-12T12:10:57Z","relation":"main_file"}],"department":[{"_id":"157"}],"type":"journal_article","publication":"Umformtechnik Blech Rohre Profile","issue":"7/20","_id":"20170","page":"48-50","user_id":"68518","ddc":["620"],"status":"public","has_accepted_license":"1","oa":"1","citation":{"mla":"Otroshi, Mortaza, and Gerson Meschut. “Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten.” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20, 2020, pp. 48–50.","ama":"Otroshi M, Meschut G. Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten. <i>Umformtechnik Blech Rohre Profile</i>. 2020;(7/20):48-50.","bibtex":"@article{Otroshi_Meschut_2020, title={Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten}, number={7/20}, journal={Umformtechnik Blech Rohre Profile}, author={Otroshi, Mortaza and Meschut, Gerson}, year={2020}, pages={48–50} }","apa":"Otroshi, M., &#38; Meschut, G. (2020). Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten. <i>Umformtechnik Blech Rohre Profile</i>, (7/20), 48–50.","ieee":"M. Otroshi and G. Meschut, “Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten,” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20, pp. 48–50, 2020.","chicago":"Otroshi, Mortaza, and Gerson Meschut. “Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten.” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20 (2020): 48–50.","short":"M. Otroshi, G. Meschut, Umformtechnik Blech Rohre Profile (2020) 48–50."},"file_date_updated":"2021-01-12T12:10:57Z"},{"_id":"20191","language":[{"iso":"eng"}],"user_id":"13703","ddc":["004"],"author":[{"full_name":"Hemsen, Paul","first_name":"Paul","last_name":"Hemsen"},{"first_name":"Marc","last_name":"Hesse","full_name":"Hesse, Marc"},{"id":"13703","last_name":"Löken","first_name":"Nils","full_name":"Löken, Nils"},{"id":"35802","last_name":"Nouri","first_name":"Zahra","full_name":"Nouri, Zahra"}],"conference":{"name":"2nd Crowdworking Symposium","start_date":"2020-10-08","location":"Paderborn","end_date":"2020-10-09"},"status":"public","title":"Platform-independent Reputation and Qualification System for Crowdwork","year":"2020","has_accepted_license":"1","date_updated":"2022-01-06T06:54:22Z","date_created":"2020-10-26T09:38:31Z","file":[{"file_id":"20192","content_type":"application/pdf","file_name":"cw_symposium_exa.pdf","file_size":126966,"access_level":"open_access","relation":"main_file","date_updated":"2020-11-09T14:25:20Z","date_created":"2020-10-26T09:32:00Z","creator":"nilo"}],"department":[{"_id":"568"}],"oa":"1","type":"conference_abstract","citation":{"ieee":"P. Hemsen, M. Hesse, N. Löken, and Z. Nouri, “Platform-independent Reputation and Qualification System for Crowdwork,” in <i>2nd Crowdworking Symposium</i>, Paderborn, 2020.","apa":"Hemsen, P., Hesse, M., Löken, N., &#38; Nouri, Z. (2020). Platform-independent Reputation and Qualification System for Crowdwork. In <i>2nd Crowdworking Symposium</i>. Paderborn.","chicago":"Hemsen, Paul, Marc Hesse, Nils Löken, and Zahra Nouri. “Platform-Independent Reputation and Qualification System for Crowdwork.” In <i>2nd Crowdworking Symposium</i>, 2020.","short":"P. Hemsen, M. Hesse, N. Löken, Z. Nouri, in: 2nd Crowdworking Symposium, 2020.","mla":"Hemsen, Paul, et al. “Platform-Independent Reputation and Qualification System for Crowdwork.” <i>2nd Crowdworking Symposium</i>, 2020.","bibtex":"@inproceedings{Hemsen_Hesse_Löken_Nouri_2020, title={Platform-independent Reputation and Qualification System for Crowdwork}, booktitle={2nd Crowdworking Symposium}, author={Hemsen, Paul and Hesse, Marc and Löken, Nils and Nouri, Zahra}, year={2020} }","ama":"Hemsen P, Hesse M, Löken N, Nouri Z. Platform-independent Reputation and Qualification System for Crowdwork. In: <i>2nd Crowdworking Symposium</i>. ; 2020."},"file_date_updated":"2020-11-09T14:25:20Z","publication":"2nd Crowdworking Symposium"},{"oa":"1","type":"preprint","date_created":"2020-10-27T07:48:40Z","abstract":[{"lang":"eng","text":"In many real-world applications, the relative depth of objects in an image is\r\ncrucial for scene understanding, e.g., to calculate occlusions in augmented\r\nreality scenes. Predicting depth in monocular images has recently been tackled\r\nusing machine learning methods, mainly by treating the problem as a regression\r\ntask. Yet, being interested in an order relation in the first place,\r\nranking methods suggest themselves as a natural alternative to regression, and\r\nindeed, ranking approaches leveraging pairwise comparisons as training\r\ninformation (\"object A is closer to the camera than B\") have shown promising\r\nperformance on this problem. In this paper, we elaborate on the use of\r\nso-called \\emph{listwise} ranking as a generalization of the pairwise approach.\r\nListwise ranking goes beyond pairwise comparisons between objects and considers\r\nrankings of arbitrary length as training information. Our approach is based on\r\nthe Plackett-Luce model, a probability distribution on rankings, which we\r\ncombine with a state-of-the-art neural network architecture and a sampling\r\nstrategy to reduce training complexity. An empirical evaluation on benchmark\r\ndata in a \"zero-shot\" setting demonstrates the effectiveness of our proposal\r\ncompared to existing ranking and regression methods."}],"citation":{"short":"J. Lienen, E. Hüllermeier, ArXiv:2010.13118 (2020).","chicago":"Lienen, Julian, and Eyke Hüllermeier. “Monocular Depth Estimation via Listwise Ranking Using the Plackett-Luce  Model.” <i>ArXiv:2010.13118</i>, 2020.","apa":"Lienen, J., &#38; Hüllermeier, E. (2020). Monocular Depth Estimation via Listwise Ranking using the Plackett-Luce  model. <i>ArXiv:2010.13118</i>.","ieee":"J. Lienen and E. Hüllermeier, “Monocular Depth Estimation via Listwise Ranking using the Plackett-Luce  model,” <i>arXiv:2010.13118</i>. 2020.","ama":"Lienen J, Hüllermeier E. Monocular Depth Estimation via Listwise Ranking using the Plackett-Luce  model. <i>arXiv:201013118</i>. 2020.","bibtex":"@article{Lienen_Hüllermeier_2020, title={Monocular Depth Estimation via Listwise Ranking using the Plackett-Luce  model}, journal={arXiv:2010.13118}, author={Lienen, Julian and Hüllermeier, Eyke}, year={2020} }","mla":"Lienen, Julian, and Eyke Hüllermeier. “Monocular Depth Estimation via Listwise Ranking Using the Plackett-Luce  Model.” <i>ArXiv:2010.13118</i>, 2020."},"publication":"arXiv:2010.13118","user_id":"44040","language":[{"iso":"eng"}],"_id":"20211","main_file_link":[{"url":"https://arxiv.org/abs/2010.13118","open_access":"1"}],"date_updated":"2022-01-06T06:54:23Z","author":[{"id":"44040","full_name":"Lienen, Julian","last_name":"Lienen","first_name":"Julian"},{"id":"48129","full_name":"Hüllermeier, Eyke","last_name":"Hüllermeier","first_name":"Eyke"}],"year":"2020","title":"Monocular Depth Estimation via Listwise Ranking using the Plackett-Luce  model","status":"public"},{"status":"public","has_accepted_license":"1","page":"116432","_id":"20233","ddc":["530"],"user_id":"158","volume":203,"file_date_updated":"2020-10-30T13:52:58Z","citation":{"bibtex":"@article{Myroshnychenko_Smirnov_Jose_Brosseau_Förstner_2020, title={Nonlinear dielectric properties of random paraelectric-dielectric composites}, volume={203}, DOI={<a href=\"https://doi.org/10.1016/j.actamat.2020.10.051\">10.1016/j.actamat.2020.10.051</a>}, journal={Acta Materialia}, author={Myroshnychenko, Viktor and Smirnov, Stanislav and Jose, Pious Mathews Mulavarickal and Brosseau, Christian and Förstner, Jens}, year={2020}, pages={116432} }","ama":"Myroshnychenko V, Smirnov S, Jose PMM, Brosseau C, Förstner J. Nonlinear dielectric properties of random paraelectric-dielectric composites. <i>Acta Materialia</i>. 2020;203:116432. doi:<a href=\"https://doi.org/10.1016/j.actamat.2020.10.051\">10.1016/j.actamat.2020.10.051</a>","mla":"Myroshnychenko, Viktor, et al. “Nonlinear Dielectric Properties of Random Paraelectric-Dielectric Composites.” <i>Acta Materialia</i>, vol. 203, 2020, p. 116432, doi:<a href=\"https://doi.org/10.1016/j.actamat.2020.10.051\">10.1016/j.actamat.2020.10.051</a>.","short":"V. Myroshnychenko, S. Smirnov, P.M.M. Jose, C. Brosseau, J. Förstner, Acta Materialia 203 (2020) 116432.","chicago":"Myroshnychenko, Viktor, Stanislav Smirnov, Pious Mathews Mulavarickal Jose, Christian Brosseau, and Jens Förstner. “Nonlinear Dielectric Properties of Random Paraelectric-Dielectric Composites.” <i>Acta Materialia</i> 203 (2020): 116432. <a href=\"https://doi.org/10.1016/j.actamat.2020.10.051\">https://doi.org/10.1016/j.actamat.2020.10.051</a>.","ieee":"V. Myroshnychenko, S. Smirnov, P. M. M. Jose, C. Brosseau, and J. Förstner, “Nonlinear dielectric properties of random paraelectric-dielectric composites,” <i>Acta Materialia</i>, vol. 203, p. 116432, 2020.","apa":"Myroshnychenko, V., Smirnov, S., Jose, P. M. M., Brosseau, C., &#38; Förstner, J. (2020). Nonlinear dielectric properties of random paraelectric-dielectric composites. <i>Acta Materialia</i>, <i>203</i>, 116432. <a href=\"https://doi.org/10.1016/j.actamat.2020.10.051\">https://doi.org/10.1016/j.actamat.2020.10.051</a>"},"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"oa":"1","year":"2020","title":"Nonlinear dielectric properties of random paraelectric-dielectric composites","publication_identifier":{"issn":["1359-6454"]},"author":[{"id":"46371","first_name":"Viktor","last_name":"Myroshnychenko","full_name":"Myroshnychenko, Viktor"},{"first_name":"Stanislav","last_name":"Smirnov","full_name":"Smirnov, Stanislav"},{"first_name":"Pious Mathews Mulavarickal","last_name":"Jose","full_name":"Jose, Pious Mathews Mulavarickal"},{"full_name":"Brosseau, Christian","first_name":"Christian","last_name":"Brosseau"},{"full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","first_name":"Jens","last_name":"Förstner","id":"158"}],"date_updated":"2022-01-06T06:54:24Z","publication_status":"published","intvolume":"       203","language":[{"iso":"eng"}],"doi":"10.1016/j.actamat.2020.10.051","publication":"Acta Materialia","abstract":[{"text":"The challenge of designing new tunable nonlinear dielectric materials with tailored properties has attracted an increasing amount of interest recently. Herein, we study the effective nonlinear dielectric response of a stochastic paraelectric-dielectric composite consisting of equilibrium distributions of circular and partially penetrable disks (or parallel, infinitely long, identical, partially penetrable, circular cylinders) of a dielectric phase randomly dispersed in a continuous matrix of a paraelectric phase. The random microstructures were generated using the Metropolis Monte Carlo algorithm. The evaluation of the effective permittivity and tunability were carried out by employing either a Landau thermodynamic model or its Johnson’s approximation to describe the field-dependent permittivity of the paraelectric phase and solving continuum-electrostatics equations using finite element calculations. We reveal that the percolation threshold in this composite governs the critical behavior of the effective permittivity and tunability. For microstructures below the percolation threshold, our simulations demonstrate a strong nonlinear behaviour of the field-dependent effective permittivity and very high tunability that increases as a function of dielectric phase concentration. Above the percolation threshold, the effective permittivity shows the tendency to linearization and the tunability dramatically drops down. The highly reduced permittivity and extraordinarily high tunability are obtained for the composites with dielectric impenetrable disks at high concentrations, in which the triggering of the percolation transition is avoided. The reported results cast light on distinct nonlinear behaviour of 2D and 3D stochastic composites and can guide the design of novel composites with the controlled morphology and tailored permittivity and tunability.","lang":"eng"}],"file":[{"creator":"fossie","date_created":"2020-10-30T13:52:58Z","file_name":"2020-10 Myroshnychenko - Acta Material (accepted preprint)_compressed.pdf","file_size":3934721,"access_level":"open_access","relation":"main_file","date_updated":"2020-10-30T13:52:58Z","file_id":"20234","content_type":"application/pdf","title":"(Accepted Preprint)"}],"date_created":"2020-10-30T13:51:42Z","type":"journal_article","department":[{"_id":"61"},{"_id":"230"}]},{"author":[{"last_name":"Engels","first_name":"Gregor","full_name":"Engels, Gregor","id":"107"}],"publication_identifier":{"issn":["2366-6145","2366-6218"]},"year":"2020","title":"Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen","status":"public","publication_status":"published","date_updated":"2022-01-06T06:58:44Z","language":[{"iso":"ger"}],"_id":"29045","main_file_link":[{"url":"https://link.springer.com/article/10.1007/s11612-020-00527-9","open_access":"1"}],"page":"363-370","user_id":"57458","doi":"10.1007/s11612-020-00527-9","citation":{"short":"G. Engels, Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO) (2020) 363–370.","chicago":"Engels, Gregor. “Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen.” <i>Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)</i>, 2020, 363–70. <a href=\"https://doi.org/10.1007/s11612-020-00527-9\">https://doi.org/10.1007/s11612-020-00527-9</a>.","ieee":"G. Engels, “Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen,” <i>Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)</i>, pp. 363–370, 2020, doi: <a href=\"https://doi.org/10.1007/s11612-020-00527-9\">10.1007/s11612-020-00527-9</a>.","apa":"Engels, G. (2020). Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen. <i>Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)</i>, 363–370. <a href=\"https://doi.org/10.1007/s11612-020-00527-9\">https://doi.org/10.1007/s11612-020-00527-9</a>","bibtex":"@article{Engels_2020, title={Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen}, DOI={<a href=\"https://doi.org/10.1007/s11612-020-00527-9\">10.1007/s11612-020-00527-9</a>}, journal={Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)}, author={Engels, Gregor}, year={2020}, pages={363–370} }","ama":"Engels G. Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen. <i>Gruppe Interaktion Organisation Zeitschrift für Angewandte Organisationspsychologie (GIO)</i>. Published online 2020:363-370. doi:<a href=\"https://doi.org/10.1007/s11612-020-00527-9\">10.1007/s11612-020-00527-9</a>","mla":"Engels, Gregor. “Der digitale Fußabdruck, Schatten oder Zwilling von Maschinen und Menschen.” <i>Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)</i>, 2020, pp. 363–70, doi:<a href=\"https://doi.org/10.1007/s11612-020-00527-9\">10.1007/s11612-020-00527-9</a>."},"publication":"Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO)","date_created":"2021-12-17T10:15:48Z","department":[{"_id":"66"}],"oa":"1","type":"journal_article"},{"date_updated":"2022-01-06T06:54:59Z","author":[{"first_name":"Kay","last_name":"Blaufus","full_name":"Blaufus, Kay"},{"full_name":"Chirvi, Malte","first_name":"Malte","last_name":"Chirvi"},{"last_name":"Huber","first_name":"Hans-Peter","full_name":"Huber, Hans-Peter"},{"last_name":"Maiterth","first_name":"Ralf","full_name":"Maiterth, Ralf"},{"last_name":"Sureth-Sloane","first_name":"Caren","full_name":"Sureth-Sloane, Caren","id":"530"}],"title":"Tax Misperception and Its Effects on Decision Making - a Literature Review","status":"public","year":"2020","volume":"No. 39","user_id":"21222","language":[{"iso":"eng"}],"_id":"21406","series_title":"TRR 266 Accounting for Transparency Working Paper Series","main_file_link":[{"open_access":"1","url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3697982"}],"abstract":[{"text":"Previous accounting research shows that taxes affect decision making by individuals and firms. Most studies assume that agents have an accurate perception regarding their tax burden. However, there is a growing body of literature analyzing whether taxes are indeed perceived correctly. We review 127 studies on the measurement of tax misperception and its behavioral implications. The review reveals that many taxpayers have substantial tax misperceptions that lead to biased decision making. We develop a Behavioral Taxpayer Response Model on the impact of provided tax information on tax perception. Besides individual traits, characteristics of the tax information and the decision environment determine the extent of tax misperception. We discuss opportunities for future research and methodological limitations. While there is much evidence on tax misperception at the individual level, we hardly find any research at the firm level. Little is known about the real effects of managers’ tax misperception and on how tax information is strategically managed to impact stakeholders. This research gap is surprising as a large part of the accounting literature analyzes decision making and disclosure of firms. We recommend a mixed-method approach combining experiments, surveys, and archival data analyses to improve the knowledge on tax misperception and its consequences.","lang":"eng"}],"citation":{"apa":"Blaufus, K., Chirvi, M., Huber, H.-P., Maiterth, R., &#38; Sureth-Sloane, C. (2020). <i>Tax Misperception and Its Effects on Decision Making - a Literature Review</i> (Vol. No. 39).","ieee":"K. Blaufus, M. Chirvi, H.-P. Huber, R. Maiterth, and C. Sureth-Sloane, <i>Tax Misperception and Its Effects on Decision Making - a Literature Review</i>, vol. No. 39. 2020.","chicago":"Blaufus, Kay, Malte Chirvi, Hans-Peter Huber, Ralf Maiterth, and Caren Sureth-Sloane. <i>Tax Misperception and Its Effects on Decision Making - a Literature Review</i>. Vol. No. 39. TRR 266 Accounting for Transparency Working Paper Series, 2020.","short":"K. Blaufus, M. Chirvi, H.-P. Huber, R. Maiterth, C. Sureth-Sloane, Tax Misperception and Its Effects on Decision Making - a Literature Review, 2020.","mla":"Blaufus, Kay, et al. <i>Tax Misperception and Its Effects on Decision Making - a Literature Review</i>. Vol. No. 39, 2020.","ama":"Blaufus K, Chirvi M, Huber H-P, Maiterth R, Sureth-Sloane C. <i>Tax Misperception and Its Effects on Decision Making - a Literature Review</i>. Vol No. 39.; 2020.","bibtex":"@book{Blaufus_Chirvi_Huber_Maiterth_Sureth-Sloane_2020, series={TRR 266 Accounting for Transparency Working Paper Series}, title={Tax Misperception and Its Effects on Decision Making - a Literature Review}, volume={No. 39}, author={Blaufus, Kay and Chirvi, Malte and Huber, Hans-Peter and Maiterth, Ralf and Sureth-Sloane, Caren}, year={2020}, collection={TRR 266 Accounting for Transparency Working Paper Series} }"},"oa":"1","department":[{"_id":"187"}],"type":"working_paper","date_created":"2021-03-09T08:12:49Z"},{"volume":"No. 41","user_id":"68607","_id":"21410","language":[{"iso":"eng"}],"series_title":"TRR 266 Accounting for Transparency Working Paper Series","main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3723499","open_access":"1"}],"date_updated":"2022-01-06T06:54:59Z","author":[{"full_name":"Eberhartinger, Eva","last_name":"Eberhartinger","first_name":"Eva"},{"full_name":"Speitmann, Raffael","last_name":"Speitmann","first_name":"Raffael"},{"id":"530","last_name":"Sureth-Sloane","first_name":"Caren","full_name":"Sureth-Sloane, Caren"}],"year":"2020","title":"How Does Trust Affect Concessionary Behavior in Tax Bargaining?","status":"public","oa":"1","department":[{"_id":"187"}],"type":"working_paper","date_created":"2021-03-09T08:36:17Z","abstract":[{"text":"We analyze the impact of trust on bargaining behavior between auditor and auditee in a tax setting. We study the effect of interpersonal trust and trust in government on both taxpayer and tax auditor. In an experiment with variation in pairwise trust settings, we find evidence that both kinds of trust affect the bargaining behavior, albeit in different ways. While trust in government increases taxpayers’ tax offers, interpersonal trust may lead to more concessionary behavior of tax auditors moderated by trust in government. Our findings help tax authorities to shape programs to enhance compliance in an atmosphere of trust.","lang":"eng"}],"citation":{"chicago":"Eberhartinger, Eva, Raffael Speitmann, and Caren Sureth-Sloane. <i>How Does Trust Affect Concessionary Behavior in Tax Bargaining?</i> Vol. No. 41. TRR 266 Accounting for Transparency Working Paper Series, 2020.","short":"E. Eberhartinger, R. Speitmann, C. Sureth-Sloane, How Does Trust Affect Concessionary Behavior in Tax Bargaining?, 2020.","apa":"Eberhartinger, E., Speitmann, R., &#38; Sureth-Sloane, C. (2020). <i>How Does Trust Affect Concessionary Behavior in Tax Bargaining?</i> (Vol. No. 41).","ieee":"E. Eberhartinger, R. Speitmann, and C. Sureth-Sloane, <i>How Does Trust Affect Concessionary Behavior in Tax Bargaining?</i>, vol. No. 41. 2020.","ama":"Eberhartinger E, Speitmann R, Sureth-Sloane C. <i>How Does Trust Affect Concessionary Behavior in Tax Bargaining?</i> Vol No. 41.; 2020.","bibtex":"@book{Eberhartinger_Speitmann_Sureth-Sloane_2020, series={TRR 266 Accounting for Transparency Working Paper Series}, title={How Does Trust Affect Concessionary Behavior in Tax Bargaining?}, volume={No. 41}, author={Eberhartinger, Eva and Speitmann, Raffael and Sureth-Sloane, Caren}, year={2020}, collection={TRR 266 Accounting for Transparency Working Paper Series} }","mla":"Eberhartinger, Eva, et al. <i>How Does Trust Affect Concessionary Behavior in Tax Bargaining?</i> Vol. No. 41, 2020."}},{"department":[{"_id":"187"}],"oa":"1","type":"working_paper","date_created":"2021-03-09T08:39:42Z","abstract":[{"lang":"eng","text":"This study examines the visibility of the GAAP effective tax rate (ETR) in firms’ financial statements as a distinct disclosure choice. Applying a game-theory disclosure model for voluntary disclosure strategies of firms to a tax setting, we argue that firms face a trade-off in their ETR disclosure decisions. On the one hand, firms have an incentive to enhance their ETR disclosure when the ratio offers shareholders “favourable conditions”, for example in terms of higher expected after-tax cash-flows. On the other hand, the disclosure of a favourable low ETR could attract the attention of tax auditors and the public and ultimately result in disclosure costs. We empirically test disclosure behaviour by examining the relation between disclosure visibility and different ETR conditions that reflect different stakeholder specific costs and benefits. While we find that unfavourable ETR conditions are not highlighted, we observe higher disclosure visibility for favourable ETRs (smooth, close to the industry average, decreasing). Additional analyses reveal that this high visibility is characteristic of firm-years with only moderately decreasing ETRs at usual ETR levels, while extreme ETRs are not highlighted. Interestingly and in contrast to our main results, a subsample of family firms do not seem to highlight favourable ETRs."}],"citation":{"bibtex":"@book{Flagmeier_Müller_Sureth-Sloane_2020, series={TRR 266 Accounting for Transparency Working Paper Series}, title={When Do Firms Highlight Their Effective Tax Rate?}, volume={No. 37}, author={Flagmeier, Vanessa and Müller, Jens and Sureth-Sloane, Caren}, year={2020}, collection={TRR 266 Accounting for Transparency Working Paper Series} }","ama":"Flagmeier V, Müller J, Sureth-Sloane C. <i>When Do Firms Highlight Their Effective Tax Rate?</i> Vol No. 37.; 2020.","mla":"Flagmeier, Vanessa, et al. <i>When Do Firms Highlight Their Effective Tax Rate?</i> Vol. No. 37, 2020.","chicago":"Flagmeier, Vanessa, Jens Müller, and Caren Sureth-Sloane. <i>When Do Firms Highlight Their Effective Tax Rate?</i> Vol. No. 37. TRR 266 Accounting for Transparency Working Paper Series, 2020.","short":"V. Flagmeier, J. Müller, C. Sureth-Sloane, When Do Firms Highlight Their Effective Tax Rate?, 2020.","ieee":"V. Flagmeier, J. Müller, and C. Sureth-Sloane, <i>When Do Firms Highlight Their Effective Tax Rate?</i>, vol. No. 37. 2020.","apa":"Flagmeier, V., Müller, J., &#38; Sureth-Sloane, C. (2020). <i>When Do Firms Highlight Their Effective Tax Rate?</i> (Vol. No. 37)."},"volume":"No. 37","user_id":"68607","_id":"21411","series_title":"TRR 266 Accounting for Transparency Working Paper Series","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3693374","open_access":"1"}],"date_updated":"2022-01-06T06:54:59Z","author":[{"first_name":"Vanessa","last_name":"Flagmeier","full_name":"Flagmeier, Vanessa"},{"id":"1245","last_name":"Müller","first_name":"Jens","full_name":"Müller, Jens"},{"last_name":"Sureth-Sloane","first_name":"Caren","full_name":"Sureth-Sloane, Caren","id":"530"}],"year":"2020","status":"public","title":"When Do Firms Highlight Their Effective Tax Rate?"},{"language":[{"iso":"eng"}],"_id":"21414","main_file_link":[{"url":"https://www.accounting-for-transparency.de/de/blog/umfrage-administrative-belastung-und-steuererleichterungen-in-der-corona-krise/","open_access":"1"}],"doi":"10.52569/RUHF6645","user_id":"68751","author":[{"full_name":"Heile, Vanessa","first_name":"Vanessa","last_name":"Heile","id":"83380"},{"last_name":"Huber","first_name":"Hans-Peter","full_name":"Huber, Hans-Peter"},{"full_name":"Maiterth, Ralf","last_name":"Maiterth","first_name":"Ralf"},{"id":"530","full_name":"Sureth-Sloane, Caren","last_name":"Sureth-Sloane","first_name":"Caren"}],"title":"Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise","year":"2020","status":"public","date_updated":"2022-01-06T06:54:59Z","date_created":"2021-03-09T08:47:55Z","oa":"1","department":[{"_id":"187"}],"type":"report","citation":{"short":"V. Heile, H.-P. Huber, R. Maiterth, C. Sureth-Sloane, Umfrage: Steuerliche Verwaltungskosten, Steuerliche Corona-Soforthilfemaßnahmen Und Investitionen in Der Krise, 2020.","chicago":"Heile, Vanessa, Hans-Peter Huber, Ralf Maiterth, and Caren Sureth-Sloane. <i>Umfrage: Steuerliche Verwaltungskosten, Steuerliche Corona-Soforthilfemaßnahmen Und Investitionen in Der Krise</i>, 2020. <a href=\"https://doi.org/10.52569/RUHF6645\">https://doi.org/10.52569/RUHF6645</a>.","ieee":"V. Heile, H.-P. Huber, R. Maiterth, and C. Sureth-Sloane, <i>Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise</i>. 2020.","apa":"Heile, V., Huber, H.-P., Maiterth, R., &#38; Sureth-Sloane, C. (2020). <i>Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise</i>. <a href=\"https://doi.org/10.52569/RUHF6645\">https://doi.org/10.52569/RUHF6645</a>","bibtex":"@book{Heile_Huber_Maiterth_Sureth-Sloane_2020, title={Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise}, DOI={<a href=\"https://doi.org/10.52569/RUHF6645\">10.52569/RUHF6645</a>}, author={Heile, Vanessa and Huber, Hans-Peter and Maiterth, Ralf and Sureth-Sloane, Caren}, year={2020} }","ama":"Heile V, Huber H-P, Maiterth R, Sureth-Sloane C. <i>Umfrage: Steuerliche Verwaltungskosten, Steuerliche Corona-Soforthilfemaßnahmen Und Investitionen in Der Krise</i>.; 2020. doi:<a href=\"https://doi.org/10.52569/RUHF6645\">10.52569/RUHF6645</a>","mla":"Heile, Vanessa, et al. <i>Umfrage: Steuerliche Verwaltungskosten, Steuerliche Corona-Soforthilfemaßnahmen Und Investitionen in Der Krise</i>. 2020, doi:<a href=\"https://doi.org/10.52569/RUHF6645\">10.52569/RUHF6645</a>."}},{"abstract":[{"lang":"eng","text":"This article comprehensively reviews Australia’s corporate income tax complexity as faced by multinational corporations (MNCs) and compares it to the average of the remaining OECD countries. Building on unique survey data, I find that the Australian tax code is considerably more complex than the OECD average, which is mainly due to overly complex anti-avoidance legislation, such as regulations on transfer pricing, general anti-avoidance or controlled foreign corporations (CFC). In contrast, Australia’s tax framework, which covers processes and features such as tax law enactment or tax audits, is close to the OECD average. A more granular analysis yields further interesting insights. For example, excessive details in the tax code and the time between the announcement of a tax law change and its enactment turn out to be serious issues in Australia relative to the remaining OECD countries."}],"citation":{"mla":"Hoppe, Thomas. <i>Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average</i>. Vol. No. 14, 2020.","ama":"Hoppe T. <i>Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average</i>. Vol No. 14.; 2020.","bibtex":"@book{Hoppe_2020, series={TRR 266 Accounting for Transparency Working Paper Series}, title={Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average}, volume={No. 14}, author={Hoppe, Thomas}, year={2020}, collection={TRR 266 Accounting for Transparency Working Paper Series} }","apa":"Hoppe, T. (2020). <i>Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average</i> (Vol. No. 14).","ieee":"T. Hoppe, <i>Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average</i>, vol. No. 14. 2020.","short":"T. Hoppe, Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average, 2020.","chicago":"Hoppe, Thomas. <i>Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average</i>. Vol. No. 14. TRR 266 Accounting for Transparency Working Paper Series, 2020."},"type":"working_paper","department":[{"_id":"187"}],"oa":"1","date_created":"2021-03-09T08:51:55Z","date_updated":"2022-01-06T06:54:59Z","status":"public","year":"2020","title":"Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average","author":[{"full_name":"Hoppe, Thomas","last_name":"Hoppe","first_name":"Thomas"}],"user_id":"68607","volume":"No. 14","main_file_link":[{"open_access":"1","url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3526193"}],"series_title":"TRR 266 Accounting for Transparency Working Paper Series","_id":"21416","language":[{"iso":"eng"}]},{"type":"report","oa":"1","department":[{"_id":"187"}],"date_created":"2021-03-09T08:56:59Z","citation":{"bibtex":"@book{Hoppe_Schanz_Schipp_Siegel_Sturm_Sureth-Sloane_2020, title={2018 Global MNC Tax Complexity Survey}, DOI={<a href=\"https://doi.org/10.52569/RPVO1003\">10.52569/RPVO1003</a>}, author={Hoppe, Thomas and Schanz, Deborah and Schipp, Adrian and Siegel, Felix and Sturm, Susann and Sureth-Sloane, Caren}, year={2020} }","ama":"Hoppe T, Schanz D, Schipp A, Siegel F, Sturm S, Sureth-Sloane C. <i>2018 Global MNC Tax Complexity Survey</i>.; 2020. doi:<a href=\"https://doi.org/10.52569/RPVO1003\">10.52569/RPVO1003</a>","mla":"Hoppe, Thomas, et al. <i>2018 Global MNC Tax Complexity Survey</i>. 2020, doi:<a href=\"https://doi.org/10.52569/RPVO1003\">10.52569/RPVO1003</a>.","chicago":"Hoppe, Thomas, Deborah Schanz, Adrian Schipp, Felix Siegel, Susann Sturm, and Caren Sureth-Sloane. <i>2018 Global MNC Tax Complexity Survey</i>, 2020. <a href=\"https://doi.org/10.52569/RPVO1003\">https://doi.org/10.52569/RPVO1003</a>.","short":"T. Hoppe, D. Schanz, A. Schipp, F. Siegel, S. Sturm, C. Sureth-Sloane, 2018 Global MNC Tax Complexity Survey, 2020.","ieee":"T. Hoppe, D. Schanz, A. Schipp, F. Siegel, S. Sturm, and C. Sureth-Sloane, <i>2018 Global MNC Tax Complexity Survey</i>. 2020.","apa":"Hoppe, T., Schanz, D., Schipp, A., Siegel, F., Sturm, S., &#38; Sureth-Sloane, C. (2020). <i>2018 Global MNC Tax Complexity Survey</i>. <a href=\"https://doi.org/10.52569/RPVO1003\">https://doi.org/10.52569/RPVO1003</a>"},"doi":"10.52569/RPVO1003","user_id":"68751","main_file_link":[{"url":"https://www.taxcomplexity.org/download/2018%20Global%20MNC%20Tax%20Complexity%20Survey%20-%20Executive%20Summary.pdf","open_access":"1"}],"_id":"21417","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:54:59Z","status":"public","title":"2018 Global MNC Tax Complexity Survey","year":"2020","author":[{"id":"22671","last_name":"Hoppe","first_name":"Thomas","full_name":"Hoppe, Thomas"},{"first_name":"Deborah","last_name":"Schanz","full_name":"Schanz, Deborah"},{"id":"44288","full_name":"Schipp, Adrian","last_name":"Schipp","first_name":"Adrian"},{"first_name":"Felix","last_name":"Siegel","full_name":"Siegel, Felix"},{"last_name":"Sturm","first_name":"Susann","full_name":"Sturm, Susann"},{"full_name":"Sureth-Sloane, Caren","first_name":"Caren","last_name":"Sureth-Sloane","id":"530"}]},{"user_id":"68607","volume":"No. 5","main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3469663","open_access":"1"}],"_id":"21418","language":[{"iso":"eng"}],"series_title":"TRR 266 Accounting for Transparency Working Paper Series","date_updated":"2022-01-06T06:54:59Z","year":"2020","title":"Measuring Tax Complexity Across Countries: A Survey Study on MNCs","status":"public","author":[{"full_name":"Hoppe, Thomas","first_name":"Thomas","last_name":"Hoppe"},{"first_name":"Deborah","last_name":"Schanz","full_name":"Schanz, Deborah"},{"full_name":"Sturm, Susann","first_name":"Susann","last_name":"Sturm"},{"id":"530","full_name":"Sureth-Sloane, Caren","last_name":"Sureth-Sloane","first_name":"Caren"}],"type":"working_paper","department":[{"_id":"187"}],"oa":"1","date_created":"2021-03-09T08:59:47Z","abstract":[{"text":"This paper introduces an index that comprehensively measures the complexity of countries’ corporate income tax systems faced by multinational corporations. It builds on surveys of highly experienced tax consultants of the largest international tax services networks. The index, called the Tax Complexity Index (TCI), is composed of a tax code subindex covering tax regulations and a tax framework subindex covering tax processes and features. For a sample of 100 countries, we find that tax complexity varies considerably across countries, and tax code and framework complexity also vary within countries. Among others, tax complexity is strongly driven by the complexity of transfer pricing regulations in the tax code and tax audits in the tax framework. When analyzing the associations with other country characteristics, we identify different patterns. For example, with regard to GDP, we find a positive association with tax code complexity and a negative association with tax framework complexity, suggesting that highly economically developed countries tend to have more complex tax codes and less complex frameworks. Overall, our tax complexity measures can serve as valuable proxies in future research and supportive tools for a variety of firm decisions and national and international tax policy discussions.","lang":"eng"}],"citation":{"short":"T. Hoppe, D. Schanz, S. Sturm, C. Sureth-Sloane, Measuring Tax Complexity Across Countries: A Survey Study on MNCs, 2020.","chicago":"Hoppe, Thomas, Deborah Schanz, Susann Sturm, and Caren Sureth-Sloane. <i>Measuring Tax Complexity Across Countries: A Survey Study on MNCs</i>. Vol. No. 5. TRR 266 Accounting for Transparency Working Paper Series, 2020.","ieee":"T. Hoppe, D. Schanz, S. Sturm, and C. Sureth-Sloane, <i>Measuring Tax Complexity Across Countries: A Survey Study on MNCs</i>, vol. No. 5. 2020.","apa":"Hoppe, T., Schanz, D., Sturm, S., &#38; Sureth-Sloane, C. (2020). <i>Measuring Tax Complexity Across Countries: A Survey Study on MNCs</i> (Vol. No. 5).","bibtex":"@book{Hoppe_Schanz_Sturm_Sureth-Sloane_2020, series={TRR 266 Accounting for Transparency Working Paper Series}, title={Measuring Tax Complexity Across Countries: A Survey Study on MNCs}, volume={No. 5}, author={Hoppe, Thomas and Schanz, Deborah and Sturm, Susann and Sureth-Sloane, Caren}, year={2020}, collection={TRR 266 Accounting for Transparency Working Paper Series} }","ama":"Hoppe T, Schanz D, Sturm S, Sureth-Sloane C. <i>Measuring Tax Complexity Across Countries: A Survey Study on MNCs</i>. Vol No. 5.; 2020.","mla":"Hoppe, Thomas, et al. <i>Measuring Tax Complexity Across Countries: A Survey Study on MNCs</i>. Vol. No. 5, 2020."}}]