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The History of the Concept of Formal Sciences, College Publications, London, 2006.","ama":"Peckhaus V, Löwe B, Räsch T, eds. <i>Foundations of Formal Sciences IV. The History of the Concept of Formal Sciences</i>. Vol 3. London: College Publications; 2006.","apa":"Peckhaus, V., Löwe, B., &#38; Räsch, T. (Eds.). (2006). <i>Foundations of Formal Sciences IV. The History of the Concept of Formal Sciences</i> (Vol. 3). London: College Publications.","chicago":"Peckhaus, Volker, Benedikt Löwe, and Thoralf Räsch, eds. <i>Foundations of Formal Sciences IV. The History of the Concept of Formal Sciences</i>. Vol. 3. Studies in Logic. London: College Publications, 2006.","ieee":"V. Peckhaus, B. Löwe, and T. Räsch, Eds., <i>Foundations of Formal Sciences IV. The History of the Concept of Formal Sciences</i>, vol. 3. London: College Publications, 2006."},"series_title":"Studies in Logic","intvolume":"         3","place":"London","editor":[{"full_name":"Peckhaus, Volker","first_name":"Volker","last_name":"Peckhaus","id":"391"},{"last_name":"Löwe","full_name":"Löwe, Benedikt","first_name":"Benedikt"},{"last_name":"Räsch","first_name":"Thoralf","full_name":"Räsch, Thoralf"}],"title":"Foundations of Formal Sciences IV. The History of the Concept of Formal Sciences","date_updated":"2022-01-06T06:53:12Z","volume":3,"page":"xiv + 282","_id":"17460","status":"public","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["1-904987-29-X"]},"type":"book_editor","year":"2006","publisher":"College Publications","date_created":"2020-07-30T07:05:48Z"},{"user_id":"21240","citation":{"short":"I. Mindt, Zeitschrift Für Anglistik Und Amerikanistik 54.2, Special Issue on \"The Scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English (2006) 149–162.","bibtex":"@article{Mindt_2006, title={Distributional data and grammatical structures: The case of so-  called subject extraposition}, journal={Zeitschrift für Anglistik und Amerikanistik 54.2, Special issue on \"The scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English}, author={Mindt, Ilka}, year={2006}, pages={149–162} }","mla":"Mindt, Ilka. “Distributional Data and Grammatical Structures: The Case of so-  Called Subject Extraposition.” <i>Zeitschrift Für Anglistik Und Amerikanistik 54.2, Special Issue on \"The Scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English</i>, 2006, pp. 149–62.","ieee":"I. Mindt, “Distributional data and grammatical structures: The case of so-  called subject extraposition,” <i>Zeitschrift für Anglistik und Amerikanistik 54.2, Special issue on \"The scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English</i>, pp. 149–162, 2006.","chicago":"Mindt, Ilka. “Distributional Data and Grammatical Structures: The Case of so-  Called Subject Extraposition.” <i>Zeitschrift Für Anglistik Und Amerikanistik 54.2, Special Issue on \"The Scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English</i>, 2006, 149–62.","apa":"Mindt, I. (2006). Distributional data and grammatical structures: The case of so-  called subject extraposition. <i>Zeitschrift Für Anglistik Und Amerikanistik 54.2, Special Issue on \"The Scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English</i>, 149–162.","ama":"Mindt I. Distributional data and grammatical structures: The case of so-  called subject extraposition. <i>Zeitschrift für Anglistik und Amerikanistik 542, Special issue on \"The scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English</i>. 2006:149-162."},"department":[{"_id":"384"}],"extern":"1","author":[{"full_name":"Mindt, Ilka","first_name":"Ilka","last_name":"Mindt"}],"title":"Distributional data and grammatical structures: The case of so- \tcalled subject extraposition","_id":"17847","page":"149 - 162","date_updated":"2022-01-06T06:53:20Z","date_created":"2020-08-12T09:57:21Z","publication":"Zeitschrift für Anglistik und Amerikanistik 54.2, Special issue on \"The scope and Limits of Corpus Linguistics – Empiricism in the Description and Analysis of English","status":"public","language":[{"iso":"eng"}],"type":"journal_article","year":"2006"},{"author":[{"full_name":"Sohler, Christian","first_name":"Christian","last_name":"Sohler"},{"last_name":"Frahling","first_name":"Gereon","full_name":"Frahling, Gereon"},{"last_name":"Marchetti-Spaccamela","first_name":"Alberto","full_name":"Marchetti-Spaccamela, Alberto"},{"last_name":"Leonardi","full_name":"Leonardi, Stefano","first_name":"Stefano"},{"last_name":"Buriol","full_name":"Buriol, Luciana","first_name":"Luciana"}],"title":"Computing Clustering Coefficients in Data Streams","abstract":[{"text":"We present random sampling algorithms that with probability at least 1 - δ compute a (1 ± ǫ)- approximation of the clustering coefficient, the transitiv ity coefficient, and of the number of bipartite cliques in a graph given as a stream of edges. Our methods can be extended to approximately count the number of occurences of fixed constant-size subgraphs. Our a lgorithms only require one pass over the input stream and their storage space depends only on structural parameters of the graphs, the approxi- mation guarantee, and the confidence probability. For examp le, the algorithms to compute the clustering and transitivity coefficient depend on that coefficient but n ot on the size of the graph. Since many large social networks have small clustering and transitivity coe fficient, our algorithms use space independent of the size of the input for these graphs. We implemented our algorithms and evaluated their performance on networks from different appli- cation domains. The sizes of the considered input graphs varied from about 8, 000 nodes and 40, 000 edges to about 135 million nodes and more than 1 billion edges. For both algorithms we run experiments with a sample set size varying from 100, 000 to 1, 000, 000 to evaluate running time and approximation guarantee. Our algorithms appear to be time efficient for the se sample sizes.","lang":"eng"}],"user_id":"15415","citation":{"ama":"Sohler C, Frahling G, Marchetti-Spaccamela A, Leonardi S, Buriol L. Computing Clustering Coefficients in Data Streams. In: <i>Proceedings of  the European Conference on Complex Systems (ECCS’06)</i>. ; 2006.","apa":"Sohler, C., Frahling, G., Marchetti-Spaccamela, A., Leonardi, S., &#38; Buriol, L. (2006). Computing Clustering Coefficients in Data Streams. In <i>Proceedings of  the European Conference on Complex Systems (ECCS’06)</i>.","chicago":"Sohler, Christian, Gereon Frahling, Alberto Marchetti-Spaccamela, Stefano Leonardi, and Luciana Buriol. “Computing Clustering Coefficients in Data Streams.” In <i>Proceedings of  the European Conference on Complex Systems (ECCS’06)</i>, 2006.","ieee":"C. Sohler, G. Frahling, A. Marchetti-Spaccamela, S. Leonardi, and L. Buriol, “Computing Clustering Coefficients in Data Streams,” in <i>Proceedings of  the European Conference on Complex Systems (ECCS’06)</i>, 2006.","mla":"Sohler, Christian, et al. “Computing Clustering Coefficients in Data Streams.” <i>Proceedings of  the European Conference on Complex Systems (ECCS’06)</i>, 2006.","bibtex":"@inproceedings{Sohler_Frahling_Marchetti-Spaccamela_Leonardi_Buriol_2006, title={Computing Clustering Coefficients in Data Streams}, booktitle={Proceedings of  the European Conference on Complex Systems (ECCS’06)}, author={Sohler, Christian and Frahling, Gereon and Marchetti-Spaccamela, Alberto and Leonardi, Stefano and Buriol, Luciana}, year={2006} }","short":"C. Sohler, G. Frahling, A. Marchetti-Spaccamela, S. Leonardi, L. Buriol, in: Proceedings of  the European Conference on Complex Systems (ECCS’06), 2006."},"department":[{"_id":"63"}],"publication":"Proceedings of  the European Conference on Complex Systems (ECCS'06)","date_created":"2020-08-31T08:25:01Z","status":"public","type":"conference","year":"2006","language":[{"iso":"eng"}],"_id":"18676","date_updated":"2022-01-06T06:53:50Z"},{"date_created":"2020-09-01T10:38:29Z","publication":"Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)","status":"public","language":[{"iso":"eng"}],"type":"conference","year":"2006","_id":"18746","date_updated":"2022-01-06T06:53:51Z","author":[{"last_name":"Sohler","full_name":"Sohler, Christian","first_name":"Christian"},{"first_name":"Joachim","full_name":"Gehweiler, Joachim","last_name":"Gehweiler"},{"last_name":"Lammersen","full_name":"Lammersen, Christiane","first_name":"Christiane"}],"title":"A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem","abstract":[{"lang":"eng","text":"In this paper, we present a randomized constant factor approximation\r\nalgorithm for the metric minimum facility location problem with uniform\r\ncosts and demands in a distributed setting, in which every point can\r\nopen a facility. In particular, our distributed algorithm uses three\r\ncommunication rounds with message sizes bounded to O(log n) bits where\r\nn is the number of points. We also extend our algorithm to constant\r\npowers of metric spaces, where we also obtain a randomized constant\r\nfactor approximation algorithm."}],"user_id":"15415","citation":{"short":"C. Sohler, J. Gehweiler, C. Lammersen, in: Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2006.","bibtex":"@inproceedings{Sohler_Gehweiler_Lammersen_2006, title={A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem}, booktitle={Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)}, author={Sohler, Christian and Gehweiler, Joachim and Lammersen, Christiane}, year={2006} }","mla":"Sohler, Christian, et al. “A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem.” <i>Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, 2006.","ieee":"C. Sohler, J. Gehweiler, and C. Lammersen, “A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem,” in <i>Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, 2006.","chicago":"Sohler, Christian, Joachim Gehweiler, and Christiane Lammersen. “A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem.” In <i>Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>, 2006.","ama":"Sohler C, Gehweiler J, Lammersen C. A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem. In: <i>Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>. ; 2006.","apa":"Sohler, C., Gehweiler, J., &#38; Lammersen, C. (2006). A Distributed O(1)-Approximation Algorithm for the Uniform Facility Location Problem. In <i>Proceeedings of 18th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)</i>."},"department":[{"_id":"63"}]},{"date_updated":"2022-01-06T06:53:52Z","_id":"18769","year":"2006","type":"book_editor","language":[{"iso":"ger"}],"status":"public","date_created":"2020-09-01T11:55:17Z","publisher":"Duncker & Humblot","department":[{"_id":"443"}],"citation":{"ieee":"A. Rüdiger and E.-M. Seng, Eds., <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Berlin: Duncker &#38; Humblot, 2006.","chicago":"Rüdiger, Axel, and Eva- Maria Seng, eds. <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Berlin: Duncker &#38; Humblot, 2006.","ama":"Rüdiger A, Seng E-M, eds. <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Berlin: Duncker &#38; Humblot; 2006.","apa":"Rüdiger, A., &#38; Seng, E.-M. (Eds.). (2006). <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Berlin: Duncker &#38; Humblot.","short":"A. Rüdiger, E.-M. Seng, eds., Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag, Duncker &#38; Humblot, Berlin, 2006.","bibtex":"@book{Rüdiger_Seng_2006, place={Berlin}, title={Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag}, publisher={Duncker &#38; Humblot}, year={2006} }","mla":"Rüdiger, Axel, and Eva-Maria Seng, editors. <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Duncker &#38; Humblot, 2006."},"user_id":"21240","alternative_title":["Festschrift für Richard Saage zum 65. Geburtstag"],"place":"Berlin","title":"Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. 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Jahrhundert","editor":[{"last_name":"Rüdiger","first_name":"Axel","full_name":"Rüdiger, Axel"},{"last_name":"Seng","first_name":"Eva-Maria","full_name":"Seng, Eva-Maria"}],"author":[{"full_name":"Seng, Eva- Maria","first_name":"Eva- Maria","last_name":"Seng","id":"499"}],"department":[{"_id":"443"}],"citation":{"bibtex":"@inbook{Seng_2006, place={Berlin}, title={Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert}, booktitle={Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag}, author={Seng, Eva- Maria}, editor={Rüdiger, Axel and Seng, Eva-MariaEditors}, year={2006}, pages={273–304} }","mla":"Seng, Eva-Maria. “Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert.” <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>, edited by Axel Rüdiger and Eva-Maria Seng, 2006, pp. 273–304.","short":"E.-M. Seng, in: A. Rüdiger, E.-M. Seng (Eds.), Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag, Berlin, 2006, pp. 273–304.","apa":"Seng, E.-M. (2006). Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert. In A. Rüdiger &#38; E.-M. Seng (Eds.), <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i> (pp. 273–304). Berlin.","ama":"Seng E-M. Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert. In: Rüdiger A, Seng E-M, eds. <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>. Berlin; 2006:273-304.","ieee":"E.-M. Seng, “Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert,” in <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>, A. Rüdiger and E.-M. Seng, Eds. Berlin, 2006, pp. 273–304.","chicago":"Seng, Eva- Maria. “Der Kult der Arbeit als Ausgangspunkt für das neue menschliche Gemeinwesen der Zukunft. Émile Zolas „Le Travail“: Ein Urbild des Städtebaus im 20. Jahrhundert.” In <i>Dimensionen der Politik: Aufklärung, Utopie, Demokratie. Festschrift für Richard Saage zum 65. Geburtstag</i>, edited by Axel Rüdiger and Eva-Maria Seng, 273–304. Berlin, 2006."},"user_id":"21240"},{"citation":{"short":"G. Frahling, C. Sohler, in: Proceedings of the Twenty-Second Annual Symposium on Computational Geometry  - SCG ’06, 2006.","mla":"Frahling, Gereon, and Christian Sohler. “A Fast K-Means Implementation Using Coresets.” <i>Proceedings of the Twenty-Second Annual Symposium on Computational Geometry  - SCG ’06</i>, 2006, doi:<a href=\"https://doi.org/10.1145/1137856.1137879\">10.1145/1137856.1137879</a>.","bibtex":"@inproceedings{Frahling_Sohler_2006, title={A fast k-means implementation using coresets}, DOI={<a href=\"https://doi.org/10.1145/1137856.1137879\">10.1145/1137856.1137879</a>}, booktitle={Proceedings of the twenty-second annual symposium on Computational geometry  - SCG ’06}, author={Frahling, Gereon and Sohler, Christian}, year={2006} }","chicago":"Frahling, Gereon, and Christian Sohler. “A Fast K-Means Implementation Using Coresets.” In <i>Proceedings of the Twenty-Second Annual Symposium on Computational Geometry  - SCG ’06</i>, 2006. <a href=\"https://doi.org/10.1145/1137856.1137879\">https://doi.org/10.1145/1137856.1137879</a>.","ieee":"G. Frahling and C. Sohler, “A fast k-means implementation using coresets,” in <i>Proceedings of the twenty-second annual symposium on Computational geometry  - SCG ’06</i>, 2006.","apa":"Frahling, G., &#38; Sohler, C. (2006). A fast k-means implementation using coresets. In <i>Proceedings of the twenty-second annual symposium on Computational geometry  - SCG ’06</i>. <a href=\"https://doi.org/10.1145/1137856.1137879\">https://doi.org/10.1145/1137856.1137879</a>","ama":"Frahling G, Sohler C. A fast k-means implementation using coresets. In: <i>Proceedings of the Twenty-Second Annual Symposium on Computational Geometry  - SCG ’06</i>. ; 2006. doi:<a href=\"https://doi.org/10.1145/1137856.1137879\">10.1145/1137856.1137879</a>"},"publication_status":"published","user_id":"15415","department":[{"_id":"63"}],"title":"A fast k-means implementation using coresets","author":[{"last_name":"Frahling","first_name":"Gereon","full_name":"Frahling, Gereon"},{"last_name":"Sohler","full_name":"Sohler, Christian","first_name":"Christian"}],"abstract":[{"lang":"eng","text":"In this paper we develop an efficient implementation for a k-means clustering algorithm. Our algorithm is a variant of KMHybrid [28, 20], i.e. it uses a combination of Lloyd-steps and random swaps, but as a novel feature it uses coresets to speed up the algorithm. A coreset is a small weighted set of points that approximates the original point set with respect to the considered problem. The main strength of the algorithm is that it can quickly determine clusterings of the same point set for many values of k. This is necessary in many applications, since, typically, one does not know a good value for k in advance. Once we have clusterings for many different values of k we can determine a good choice of k using a quality measure of clusterings that is independent of k, for example the average silhouette coefficient. The average silhouette coefficient can be approximated using coresets.To evaluate the performance of our algorithm we compare it with algorithm KMHybrid [28] on typical 3D data sets for an image compression application and on artificially created instances. Our data sets consist of 300,000 to 4.9 million points. We show that our algorithm significantly outperforms KMHybrid on most of these input instances. Additionally, the quality of the solutions computed by our algorithm deviates less than that of KMHybrid.We also computed clusterings and approximate average silhouette coefficient for k=1,…,100 for our input instances and discuss the performance of our algorithm in detail."}],"doi":"10.1145/1137856.1137879","_id":"23882","date_updated":"2022-01-06T06:56:02Z","date_created":"2021-09-07T13:03:31Z","publication":"Proceedings of the twenty-second annual symposium on Computational geometry  - SCG '06","language":[{"iso":"eng"}],"type":"conference","year":"2006","status":"public"},{"place":"Jülich","intvolume":"        31","conference":{"end_date":"2006-02-22","start_date":"2006-02-14","location":"Jülich","name":"NIC Winter School"},"author":[{"full_name":"Friedrich, Christoph","first_name":"Christoph","last_name":"Friedrich"},{"orcid":"0000-0002-4855-071X","id":"458","last_name":"Schindlmayr","first_name":"Arno","full_name":"Schindlmayr, Arno"}],"editor":[{"last_name":"Grotendorst","first_name":"Johannes","full_name":"Grotendorst, Johannes"},{"last_name":"Blügel","first_name":"Stefan","full_name":"Blügel, Stefan"},{"first_name":"Dominik","full_name":"Marx, Dominik","last_name":"Marx"}],"series_title":"NIC Series","citation":{"short":"C. Friedrich, A. Schindlmayr, in: J. Grotendorst, S. Blügel, D. Marx (Eds.), Computational Nanoscience: Do It Yourself!, John von Neumann Institute for Computing, Jülich, 2006, pp. 335–355.","bibtex":"@inbook{Friedrich_Schindlmayr_2006, place={Jülich}, series={NIC Series}, title={Many-body perturbation theory: The GW approximation}, volume={31}, booktitle={Computational Nanoscience: Do It Yourself!}, publisher={John von Neumann Institute for Computing}, author={Friedrich, Christoph and Schindlmayr, Arno}, editor={Grotendorst, Johannes and Blügel, Stefan and Marx, DominikEditors}, year={2006}, pages={335–355}, collection={NIC Series} }","mla":"Friedrich, Christoph, and Arno Schindlmayr. “Many-Body Perturbation Theory: The GW Approximation.” <i>Computational Nanoscience: Do It Yourself!</i>, edited by Johannes Grotendorst et al., vol. 31, John von Neumann Institute for Computing, 2006, pp. 335–55.","ieee":"C. Friedrich and A. Schindlmayr, “Many-body perturbation theory: The GW approximation,” in <i>Computational Nanoscience: Do It Yourself!</i>, vol. 31, J. Grotendorst, S. Blügel, and D. Marx, Eds. Jülich: John von Neumann Institute for Computing, 2006, pp. 335–355.","chicago":"Friedrich, Christoph, and Arno Schindlmayr. “Many-Body Perturbation Theory: The GW Approximation.” In <i>Computational Nanoscience: Do It Yourself!</i>, edited by Johannes Grotendorst, Stefan Blügel, and Dominik Marx, 31:335–55. NIC Series. Jülich: John von Neumann Institute for Computing, 2006.","ama":"Friedrich C, Schindlmayr A. Many-body perturbation theory: The GW approximation. In: Grotendorst J, Blügel S, Marx D, eds. <i>Computational Nanoscience: Do It Yourself!</i>. Vol 31. NIC Series. Jülich: John von Neumann Institute for Computing; 2006:335-355.","apa":"Friedrich, C., &#38; Schindlmayr, A. (2006). Many-body perturbation theory: The GW approximation. In J. Grotendorst, S. Blügel, &#38; D. Marx (Eds.), <i>Computational Nanoscience: Do It Yourself!</i> (Vol. 31, pp. 335–355). Jülich: John von Neumann Institute for Computing."},"publication_status":"published","publication_identifier":{"isbn":["3-00-017350-1"]},"year":"2006","language":[{"iso":"eng"}],"status":"public","date_created":"2020-08-28T18:43:18Z","publisher":"John von Neumann Institute for Computing","date_updated":"2022-01-06T06:53:43Z","_id":"18606","file_date_updated":"2022-01-06T06:53:43Z","has_accepted_license":"1","abstract":[{"text":"In this lecture we present many-body perturbation theory as a method to determine quasiparticle excitations in solids, especially electronic band structures, accurately from first principles. The main ingredient is the electronic self-energy that, in principle, contains all many-body exchange and correlation effects beyond the Hartree potential. As its exact mathematical expression is unknown, approximations must be used in practical calculations. The approximation is obtained using a systematic algebraic approach on the basis of Green function techniques. It constitutes an expansion of the self-energy up to linear order in the screened Coulomb potential, which describes the interaction between the quasiparticles and includes dynamic screening through the creation of exchange-correlation holes around the bare particles. The implementation of the approximation relies on a perturbative treatment starting from density functional theory. Besides a detailed mathematical discussion we focus on the underlying physical concepts and show some illustrative applications.","lang":"eng"}],"title":"Many-body perturbation theory: The GW approximation","file":[{"creator":"schindlm","description":"© 2006 John von Neumann Institute for Computing","file_size":317126,"access_level":"request","title":"Many-body perturbation theory: The GW approximation","relation":"main_file","date_updated":"2022-01-06T06:53:43Z","file_name":"NIC-GW.pdf","content_type":"application/pdf","file_id":"18607","date_created":"2020-08-28T18:38:38Z"}],"extern":"1","user_id":"458","oa":"1","main_file_link":[{"url":"http://hdl.handle.net/2128/4778","open_access":"1"}],"type":"book_chapter","publication":"Computational Nanoscience: Do It Yourself!","ddc":["530"],"page":"335-355","volume":31},{"title":"Intersection Management as Self-Organisation of Mechatronic Systems","author":[{"last_name":"Bruns","full_name":"Bruns, Torsten","first_name":"Torsten"},{"last_name":"Münch","first_name":"Eckehard","full_name":"Münch, Eckehard"}],"citation":{"apa":"Bruns, T., &#38; Münch, E. (2006). Intersection Management as Self-Organisation of Mechatronic Systems. <i>6. Internationales Heinz Nixdorf Symposium</i>.","ama":"Bruns T, Münch E. Intersection Management as Self-Organisation of Mechatronic Systems. <i>6 Internationales Heinz Nixdorf Symposium</i>. 2006.","chicago":"Bruns, Torsten, and Eckehard Münch. “Intersection Management as Self-Organisation of Mechatronic Systems.” <i>6. Internationales Heinz Nixdorf Symposium</i>, 2006.","ieee":"T. Bruns and E. Münch, “Intersection Management as Self-Organisation of Mechatronic Systems,” <i>6. Internationales Heinz Nixdorf Symposium</i>, 2006.","mla":"Bruns, Torsten, and Eckehard Münch. “Intersection Management as Self-Organisation of Mechatronic Systems.” <i>6. Internationales Heinz Nixdorf Symposium</i>, 2006.","bibtex":"@article{Bruns_Münch_2006, title={Intersection Management as Self-Organisation of Mechatronic Systems}, journal={6. Internationales Heinz Nixdorf Symposium}, author={Bruns, Torsten and Münch, Eckehard}, year={2006} }","short":"T. Bruns, E. Münch, 6. Internationales Heinz Nixdorf Symposium (2006)."},"user_id":"24876","department":[{"_id":"153"}],"publication":"6. Internationales Heinz Nixdorf Symposium","date_created":"2021-08-09T09:18:39Z","type":"journal_article","year":"2006","language":[{"iso":"eng"}],"status":"public","_id":"23311","date_updated":"2022-01-06T06:55:49Z"},{"volume":"44, Supplement","page":"e341 - e344","type":"journal_article","publication":"Ultrasonics","quality_controlled":"1","user_id":"55222","keyword":["Moderate hyperthermia"],"doi":"10.1016/j.ultras.2006.07.004","abstract":[{"text":"An improved concept for ultrasonic hyperthermia of tumors is presented. This concept is based on past experience of a German government supported project [1], which ended in 1984. It offers a low cost alternative to common RF- and microwave methods for hyperthermia of tumors with volumes between 1 and 40 ml at treatment times between 30 and 60 min. Our new version of the system considerably improves the temperature suppression in the healthy tissue around the target area and enables the adjustment of the beam width to the actual tumor size and the field geometry to the depth and shape of the tumor. The applicator can be used for moderate hyperthermia with tissue overheating up to 10 K or for ablation therapy with short high temperature pulses. Its central area is free for the integration of a commercial ultrasonic diagnostic sector scanner or a Doppler flow sensor in order to support the adjustment of the transducer and to monitor the whole area during the therapy.","lang":"eng"}],"title":"Focusing cross-fire applicator for ultrasonic hyperthermia of tumors","date_updated":"2022-01-06T07:04:16Z","_id":"9543","status":"public","year":"2006","publication_identifier":{"issn":["0041-624X"]},"language":[{"iso":"eng"}],"date_created":"2019-04-29T09:27:27Z","department":[{"_id":"151"}],"citation":{"ieee":"E. G. Lierke and T. Hemsel, “Focusing cross-fire applicator for ultrasonic hyperthermia of tumors,” <i>Ultrasonics</i>, vol. 44, Supplement, pp. e341–e344, 2006.","chicago":"Lierke, E.G., and Tobias Hemsel. “Focusing Cross-Fire Applicator for Ultrasonic Hyperthermia of Tumors.” <i>Ultrasonics</i> 44, Supplement (2006): e341–44. <a href=\"https://doi.org/10.1016/j.ultras.2006.07.004\">https://doi.org/10.1016/j.ultras.2006.07.004</a>.","ama":"Lierke EG, Hemsel T. Focusing cross-fire applicator for ultrasonic hyperthermia of tumors. <i>Ultrasonics</i>. 2006;44, Supplement:e341-e344. doi:<a href=\"https://doi.org/10.1016/j.ultras.2006.07.004\">10.1016/j.ultras.2006.07.004</a>","apa":"Lierke, E. G., &#38; Hemsel, T. (2006). Focusing cross-fire applicator for ultrasonic hyperthermia of tumors. <i>Ultrasonics</i>, <i>44</i>, <i>Supplement</i>, e341–e344. <a href=\"https://doi.org/10.1016/j.ultras.2006.07.004\">https://doi.org/10.1016/j.ultras.2006.07.004</a>","short":"E.G. Lierke, T. Hemsel, Ultrasonics 44, Supplement (2006) e341–e344.","bibtex":"@article{Lierke_Hemsel_2006, title={Focusing cross-fire applicator for ultrasonic hyperthermia of tumors}, volume={44, Supplement}, DOI={<a href=\"https://doi.org/10.1016/j.ultras.2006.07.004\">10.1016/j.ultras.2006.07.004</a>}, journal={Ultrasonics}, author={Lierke, E.G. and Hemsel, Tobias}, year={2006}, pages={e341–e344} }","mla":"Lierke, E. G., and Tobias Hemsel. “Focusing Cross-Fire Applicator for Ultrasonic Hyperthermia of Tumors.” <i>Ultrasonics</i>, vol. 44, Supplement, 2006, pp. e341–44, doi:<a href=\"https://doi.org/10.1016/j.ultras.2006.07.004\">10.1016/j.ultras.2006.07.004</a>."},"author":[{"last_name":"Lierke","full_name":"Lierke, E.G.","first_name":"E.G."},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"}]},{"department":[{"_id":"53"}],"user_id":"16148","citation":{"short":"S. Krauter, ed., Book of Proceedings of RIO 6 – World Climate &#38; Energy Event, Imprinta Press, 328 Seiten, November 2006, Rio de Janeiro (Brasilien), 2006.","bibtex":"@book{Krauter_2006, place={Rio de Janeiro (Brasilien)}, title={Book of Proceedings of RIO 6 – World Climate &#38; Energy Event}, publisher={Imprinta Press, 328 Seiten, November 2006}, year={2006} }","mla":"Krauter, Stefan, editor. <i>Book of Proceedings of RIO 6 – World Climate &#38; Energy Event</i>. Imprinta Press, 328 Seiten, November 2006, 2006.","ieee":"S. Krauter, Ed., <i>Book of Proceedings of RIO 6 – World Climate &#38; Energy Event</i>. Rio de Janeiro (Brasilien): Imprinta Press, 328 Seiten, November 2006, 2006.","chicago":"Krauter, Stefan, ed. <i>Book of Proceedings of RIO 6 – World Climate &#38; Energy Event</i>. Rio de Janeiro (Brasilien): Imprinta Press, 328 Seiten, November 2006, 2006.","apa":"Krauter, S. (Ed.). (2006). <i>Book of Proceedings of RIO 6 – World Climate &#38; Energy Event</i>. Rio de Janeiro (Brasilien): Imprinta Press, 328 Seiten, November 2006.","ama":"Krauter S, ed. <i>Book of Proceedings of RIO 6 – World Climate &#38; Energy Event</i>. Rio de Janeiro (Brasilien): Imprinta Press, 328 Seiten, November 2006; 2006."},"place":"Rio de Janeiro (Brasilien)","extern":"1","editor":[{"last_name":"Krauter","id":"28836","full_name":"Krauter, Stefan","first_name":"Stefan","orcid":"0000-0002-3594-260X"}],"title":"Book of Proceedings of RIO 6 – World Climate & Energy Event","date_updated":"2022-01-06T07:03:53Z","_id":"8311","status":"public","language":[{"iso":"eng"}],"publication_identifier":{"isbn":[" 85-902710-4-8"]},"type":"conference_editor","year":"2006","publisher":"Imprinta Press, 328 Seiten, November 2006","date_created":"2019-03-05T08:39:39Z"}]