[{"user_id":"15415","citation":{"ama":"Dorigo M, Hamann H, Szymanski M, Wörn H, Shi Y. Orientation in a Trail Network by Exploiting its Geometry for Swarm Robotics. In: <i>IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5</i>. IEEE Press; 2007:310--315. doi:<a href=\"https://doi.org/10.1109/SIS.2007.367953\">10.1109/SIS.2007.367953</a>","apa":"Dorigo, M., Hamann, H., Szymanski, M., Wörn, H., &#38; Shi, Y. (2007). Orientation in a Trail Network by Exploiting its Geometry for Swarm Robotics. In <i>IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5</i> (pp. 310--315). IEEE Press. <a href=\"https://doi.org/10.1109/SIS.2007.367953\">https://doi.org/10.1109/SIS.2007.367953</a>","chicago":"Dorigo, Marco, Heiko Hamann, Marc Szymanski, Heinz Wörn, and Yuhui Shi. “Orientation in a Trail Network by Exploiting Its Geometry for Swarm Robotics.” In <i>IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5</i>, 310--315. IEEE Press, 2007. <a href=\"https://doi.org/10.1109/SIS.2007.367953\">https://doi.org/10.1109/SIS.2007.367953</a>.","ieee":"M. Dorigo, H. Hamann, M. Szymanski, H. Wörn, and Y. Shi, “Orientation in a Trail Network by Exploiting its Geometry for Swarm Robotics,” in <i>IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5</i>, 2007, pp. 310--315.","mla":"Dorigo, Marco, et al. “Orientation in a Trail Network by Exploiting Its Geometry for Swarm Robotics.” <i>IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5</i>, IEEE Press, 2007, pp. 310--315, doi:<a href=\"https://doi.org/10.1109/SIS.2007.367953\">10.1109/SIS.2007.367953</a>.","bibtex":"@inproceedings{Dorigo_Hamann_Szymanski_Wörn_Shi_2007, title={Orientation in a Trail Network by Exploiting its Geometry for Swarm Robotics}, DOI={<a href=\"https://doi.org/10.1109/SIS.2007.367953\">10.1109/SIS.2007.367953</a>}, booktitle={IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5}, publisher={IEEE Press}, author={Dorigo, Marco and Hamann, Heiko and Szymanski, Marc and Wörn, Heinz and Shi, Yuhui}, year={2007}, pages={310--315} }","short":"M. Dorigo, H. Hamann, M. Szymanski, H. Wörn, Y. Shi, in: IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5, IEEE Press, 2007, pp. 310--315."},"department":[{"_id":"63"},{"_id":"238"}],"author":[{"full_name":"Dorigo, Marco","first_name":"Marco","last_name":"Dorigo"},{"last_name":"Hamann","full_name":"Hamann, Heiko","first_name":"Heiko"},{"last_name":"Szymanski","first_name":"Marc","full_name":"Szymanski, Marc"},{"first_name":"Heinz","full_name":"Wörn, Heinz","last_name":"Wörn"},{"last_name":"Shi","full_name":"Shi, Yuhui","first_name":"Yuhui"}],"title":"Orientation in a Trail Network by Exploiting its Geometry for Swarm Robotics","doi":"10.1109/SIS.2007.367953","_id":"20374","page":"310--315","date_updated":"2022-01-06T06:54:26Z","publisher":"IEEE Press","publication":"IEEE Swarm Intelligence Symposium, Honolulu, USA, April 1-5","date_created":"2020-11-17T14:59:51Z","status":"public","year":"2007","type":"conference","language":[{"iso":"eng"}]},{"department":[{"_id":"63"}],"citation":{"ama":"Ziegler M. Real Hypercomputation and Continuity. <i>Theory of Computing Systems</i>. 2007:177-206. doi:<a href=\"https://doi.org/10.1007/s00224-006-1343-6\">10.1007/s00224-006-1343-6</a>","apa":"Ziegler, M. (2007). Real Hypercomputation and Continuity. <i>Theory of Computing Systems</i>, 177–206. <a href=\"https://doi.org/10.1007/s00224-006-1343-6\">https://doi.org/10.1007/s00224-006-1343-6</a>","chicago":"Ziegler, Martin. “Real Hypercomputation and Continuity.” <i>Theory of Computing Systems</i>, 2007, 177–206. <a href=\"https://doi.org/10.1007/s00224-006-1343-6\">https://doi.org/10.1007/s00224-006-1343-6</a>.","ieee":"M. Ziegler, “Real Hypercomputation and Continuity,” <i>Theory of Computing Systems</i>, pp. 177–206, 2007.","mla":"Ziegler, Martin. “Real Hypercomputation and Continuity.” <i>Theory of Computing Systems</i>, 2007, pp. 177–206, doi:<a href=\"https://doi.org/10.1007/s00224-006-1343-6\">10.1007/s00224-006-1343-6</a>.","bibtex":"@article{Ziegler_2007, title={Real Hypercomputation and Continuity}, DOI={<a href=\"https://doi.org/10.1007/s00224-006-1343-6\">10.1007/s00224-006-1343-6</a>}, journal={Theory of Computing Systems}, author={Ziegler, Martin}, year={2007}, pages={177–206} }","short":"M. Ziegler, Theory of Computing Systems (2007) 177–206."},"publication_status":"published","user_id":"15415","doi":"10.1007/s00224-006-1343-6","title":"Real Hypercomputation and Continuity","author":[{"last_name":"Ziegler","first_name":"Martin","full_name":"Ziegler, Martin"}],"date_updated":"2022-01-06T06:53:24Z","_id":"17981","page":"177-206","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1432-4350","1433-0490"]},"type":"journal_article","year":"2007","status":"public","date_created":"2020-08-14T13:32:37Z","publication":"Theory of Computing Systems"},{"_id":"18572","date_updated":"2022-01-06T06:53:40Z","publisher":"Springer","date_created":"2020-08-28T12:46:05Z","status":"public","language":[{"iso":"eng"}],"year":"2007","publication_identifier":{"isbn":["9783540755197"]},"publication_status":"published","citation":{"short":"L.S. Buriol, G. Frahling, S. Leonardi, C. Sohler, in: Proceedings of the 15th European Symposium on Algorithms (ESA), Springer, Berlin, Heidelberg, 2007, pp. 618–632.","mla":"Buriol, Luciana S., et al. “Estimating Clustering Indexes in Data Streams.” <i>Proceedings of the 15th European Symposium on Algorithms (ESA)</i>, vol. 4698, Springer, 2007, pp. 618–32, doi:<a href=\"https://doi.org/10.1007/978-3-540-75520-3_55\">10.1007/978-3-540-75520-3_55</a>.","bibtex":"@inproceedings{Buriol_Frahling_Leonardi_Sohler_2007, place={Berlin, Heidelberg}, series={Lecture Notes in Computer Science}, title={Estimating Clustering Indexes in Data Streams}, volume={4698}, DOI={<a href=\"https://doi.org/10.1007/978-3-540-75520-3_55\">10.1007/978-3-540-75520-3_55</a>}, booktitle={Proceedings of the 15th European Symposium on Algorithms (ESA)}, publisher={Springer}, author={Buriol, Luciana S. and Frahling, Gereon and Leonardi, Stefano and Sohler, Christian}, year={2007}, pages={618–632}, collection={Lecture Notes in Computer Science} }","chicago":"Buriol, Luciana S., Gereon Frahling, Stefano Leonardi, and Christian Sohler. “Estimating Clustering Indexes in Data Streams.” In <i>Proceedings of the 15th European Symposium on Algorithms (ESA)</i>, 4698:618–32. Lecture Notes in Computer Science. Berlin, Heidelberg: Springer, 2007. <a href=\"https://doi.org/10.1007/978-3-540-75520-3_55\">https://doi.org/10.1007/978-3-540-75520-3_55</a>.","ieee":"L. S. Buriol, G. Frahling, S. Leonardi, and C. Sohler, “Estimating Clustering Indexes in Data Streams,” in <i>Proceedings of the 15th European Symposium on Algorithms (ESA)</i>, 2007, vol. 4698, pp. 618–632.","ama":"Buriol LS, Frahling G, Leonardi S, Sohler C. Estimating Clustering Indexes in Data Streams. In: <i>Proceedings of the 15th European Symposium on Algorithms (ESA)</i>. Vol 4698. Lecture Notes in Computer Science. Berlin, Heidelberg: Springer; 2007:618-632. doi:<a href=\"https://doi.org/10.1007/978-3-540-75520-3_55\">10.1007/978-3-540-75520-3_55</a>","apa":"Buriol, L. S., Frahling, G., Leonardi, S., &#38; Sohler, C. (2007). Estimating Clustering Indexes in Data Streams. In <i>Proceedings of the 15th European Symposium on Algorithms (ESA)</i> (Vol. 4698, pp. 618–632). Berlin, Heidelberg: Springer. <a href=\"https://doi.org/10.1007/978-3-540-75520-3_55\">https://doi.org/10.1007/978-3-540-75520-3_55</a>"},"series_title":"Lecture Notes in Computer Science","department":[{"_id":"63"}],"author":[{"last_name":"Buriol","full_name":"Buriol, Luciana S.","first_name":"Luciana S."},{"full_name":"Frahling, Gereon","first_name":"Gereon","last_name":"Frahling"},{"last_name":"Leonardi","first_name":"Stefano","full_name":"Leonardi, Stefano"},{"last_name":"Sohler","first_name":"Christian","full_name":"Sohler, Christian"}],"intvolume":"      4698","place":"Berlin, Heidelberg","volume":4698,"page":"618-632","publication":"Proceedings of the 15th European Symposium on Algorithms (ESA)","type":"conference","user_id":"15415","title":"Estimating Clustering Indexes in Data Streams","doi":"10.1007/978-3-540-75520-3_55","abstract":[{"text":"We present random sampling algorithms that with probability at least 1 − δ compute a (1 ±ε)-approximation of the clustering coefficient and of the number of bipartite clique subgraphs of a graph given as an incidence stream of edges. The space used by our algorithm to estimate the clustering coefficient is inversely related to the clustering coefficient of the network itself. The space used by our algorithm to compute the number K 3,3 of bipartite cliques is proportional to the ratio between the number of K 1,3 and K 3,3 in the graph.\r\n\r\nSince the space complexity depends only on the structure of the input graph and not on the number of nodes, our algorithms scale very well with increasing graph size. Therefore they provide a basic tool to analyze the structure of dense clusters in large graphs and have many applications in the discovery of web communities, the analysis of the structure of large social networks and the probing of frequent patterns in large graphs.\r\n\r\nWe implemented both algorithms and evaluated their performance on networks from different application domains and of different size; The largest instance is a webgraph consisting of more than 135 million nodes and 1 billion edges. Both algorithms compute accurate results in reasonable time on the tested instances.","lang":"eng"}]},{"page":"A1.21-A1.36","volume":34,"ddc":["530"],"publication":"Probing the Nanoworld ","type":"book_chapter","main_file_link":[{"url":"http://juser.fz-juelich.de/record/811870"}],"user_id":"458","title":"Interaction of radiation with matter. Part II: Light and electrons","extern":"1","file":[{"file_name":"A01-Schindlmayr.pdf","file_id":"19878","content_type":"application/pdf","date_created":"2020-10-05T11:43:03Z","relation":"main_file","date_updated":"2022-01-06T06:53:40Z","creator":"schindlm","description":"© 2007 Forschungszentrum Jülich","file_size":281378,"access_level":"request","title":"Interaction of radiation with matter: Part II: Light and electrons"}],"has_accepted_license":"1","file_date_updated":"2022-01-06T06:53:40Z","_id":"18588","date_updated":"2022-01-06T06:53:40Z","date_created":"2020-08-28T16:18:39Z","publisher":"Forschungszentrum Jülich","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1433-5506"],"isbn":["978-3-89336-462-6"]},"year":"2007","status":"public","citation":{"mla":"Schindlmayr, Arno. “Interaction of Radiation with Matter. Part II: Light and Electrons.” <i>Probing the Nanoworld </i>, edited by Knut Urban et al., vol. 34, Forschungszentrum Jülich, 2007, p. A1.21-A1.36.","bibtex":"@inbook{Schindlmayr_2007, place={Jülich}, series={Matter and Materials}, title={Interaction of radiation with matter. Part II: Light and electrons}, volume={34}, booktitle={Probing the Nanoworld }, publisher={Forschungszentrum Jülich}, author={Schindlmayr, Arno}, editor={Urban, Knut and Schneider, Claus Michael and Brückel, Thomas and Blügel, StefanEditors}, year={2007}, pages={A1.21-A1.36}, collection={Matter and Materials} }","short":"A. Schindlmayr, in: K. Urban, C.M. Schneider, T. Brückel, S. Blügel (Eds.), Probing the Nanoworld , Forschungszentrum Jülich, Jülich, 2007, p. A1.21-A1.36.","ama":"Schindlmayr A. Interaction of radiation with matter. Part II: Light and electrons. In: Urban K, Schneider CM, Brückel T, Blügel S, eds. <i>Probing the Nanoworld </i>. Vol 34. Matter and Materials. Jülich: Forschungszentrum Jülich; 2007:A1.21-A1.36.","apa":"Schindlmayr, A. (2007). Interaction of radiation with matter. Part II: Light and electrons. In K. Urban, C. M. Schneider, T. Brückel, &#38; S. Blügel (Eds.), <i>Probing the Nanoworld </i> (Vol. 34, p. A1.21-A1.36). Jülich: Forschungszentrum Jülich.","chicago":"Schindlmayr, Arno. “Interaction of Radiation with Matter. Part II: Light and Electrons.” In <i>Probing the Nanoworld </i>, edited by Knut Urban, Claus Michael Schneider, Thomas Brückel, and Stefan Blügel, 34:A1.21-A1.36. Matter and Materials. Jülich: Forschungszentrum Jülich, 2007.","ieee":"A. Schindlmayr, “Interaction of radiation with matter. Part II: Light and electrons,” in <i>Probing the Nanoworld </i>, vol. 34, K. Urban, C. M. Schneider, T. Brückel, and S. Blügel, Eds. Jülich: Forschungszentrum Jülich, 2007, p. A1.21-A1.36."},"series_title":"Matter and Materials","publication_status":"published","conference":{"end_date":"2007-03-23","name":"38th Spring School of the Institute of Solid State Research","location":"Jülich","start_date":"2007-03-12"},"author":[{"full_name":"Schindlmayr, Arno","first_name":"Arno","id":"458","last_name":"Schindlmayr","orcid":"0000-0002-4855-071X"}],"editor":[{"last_name":"Urban","first_name":"Knut","full_name":"Urban, Knut"},{"last_name":"Schneider","full_name":"Schneider, Claus Michael","first_name":"Claus Michael"},{"last_name":"Brückel","first_name":"Thomas","full_name":"Brückel, Thomas"},{"last_name":"Blügel","full_name":"Blügel, Stefan","first_name":"Stefan"}],"place":"Jülich","intvolume":"        34"},{"oa":"1","user_id":"458","external_id":{"isi":["000243590400002"]},"file":[{"relation":"main_file","date_updated":"2020-08-30T15:40:54Z","file_name":"Friák_2007_New_J._Phys._9_005.pdf","content_type":"application/pdf","file_id":"18592","date_created":"2020-08-28T16:40:11Z","creator":"schindlm","description":"© 2007 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft","file_size":573804,"access_level":"open_access","title":"Ab initio study of the half-metal to metal transition in strained magnetite"}],"extern":"1","title":"Ab initio study of the half-metal to metal transition in strained magnetite","has_accepted_license":"1","doi":"10.1088/1367-2630/9/1/005","abstract":[{"lang":"eng","text":"Using density-functional theory, we investigate the stability of the half-metallic ground state of magnetite under different strain conditions. The effects of volume relaxation and internal degrees of freedom are fully taken into account. For hydrostatic compression, planar strain in the (001) plane and uniaxial strain along the [001] direction, we derive quantitative limits beyond which magnetite becomes metallic. As a major new result, we identify the bond length between the octahedrally coordinated iron atoms and their neighbouring oxygen atoms as the main characteristic parameter, and we show that the transition occurs if external strain reduces this interatomic distance from 2.06 Å in equilibrium to below a critical value of 1.99 Å. Based on this criterion, we also argue that planar strain due to epitaxial growth does not lead to a metallic state for magnetite films grown on (111)-oriented substrates."}],"volume":9,"issue":"1","article_number":"5","publication":"New Journal of Physics","quality_controlled":"1","ddc":["530"],"type":"journal_article","publication_status":"published","citation":{"chicago":"Friák, Martin, Arno Schindlmayr, and Matthias Scheffler. “Ab Initio Study of the Half-Metal to Metal Transition in Strained Magnetite.” <i>New Journal of Physics</i> 9, no. 1 (2007). <a href=\"https://doi.org/10.1088/1367-2630/9/1/005\">https://doi.org/10.1088/1367-2630/9/1/005</a>.","ieee":"M. Friák, A. Schindlmayr, and M. Scheffler, “Ab initio study of the half-metal to metal transition in strained magnetite,” <i>New Journal of Physics</i>, vol. 9, no. 1, 2007.","ama":"Friák M, Schindlmayr A, Scheffler M. Ab initio study of the half-metal to metal transition in strained magnetite. <i>New Journal of Physics</i>. 2007;9(1). doi:<a href=\"https://doi.org/10.1088/1367-2630/9/1/005\">10.1088/1367-2630/9/1/005</a>","apa":"Friák, M., Schindlmayr, A., &#38; Scheffler, M. (2007). Ab initio study of the half-metal to metal transition in strained magnetite. <i>New Journal of Physics</i>, <i>9</i>(1). <a href=\"https://doi.org/10.1088/1367-2630/9/1/005\">https://doi.org/10.1088/1367-2630/9/1/005</a>","short":"M. Friák, A. Schindlmayr, M. Scheffler, New Journal of Physics 9 (2007).","mla":"Friák, Martin, et al. “Ab Initio Study of the Half-Metal to Metal Transition in Strained Magnetite.” <i>New Journal of Physics</i>, vol. 9, no. 1, 5, IOP Publishing and Deutsche Physikalische Gesellschaft, 2007, doi:<a href=\"https://doi.org/10.1088/1367-2630/9/1/005\">10.1088/1367-2630/9/1/005</a>.","bibtex":"@article{Friák_Schindlmayr_Scheffler_2007, title={Ab initio study of the half-metal to metal transition in strained magnetite}, volume={9}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/9/1/005\">10.1088/1367-2630/9/1/005</a>}, number={15}, journal={New Journal of Physics}, publisher={IOP Publishing and Deutsche Physikalische Gesellschaft}, author={Friák, Martin and Schindlmayr, Arno and Scheffler, Matthias}, year={2007} }"},"author":[{"last_name":"Friák","full_name":"Friák, Martin","first_name":"Martin"},{"orcid":"0000-0002-4855-071X","id":"458","last_name":"Schindlmayr","first_name":"Arno","full_name":"Schindlmayr, Arno"},{"last_name":"Scheffler","full_name":"Scheffler, Matthias","first_name":"Matthias"}],"article_type":"original","intvolume":"         9","isi":"1","file_date_updated":"2020-08-30T15:40:54Z","_id":"18591","date_updated":"2022-01-06T06:53:41Z","publisher":"IOP Publishing and Deutsche Physikalische Gesellschaft","date_created":"2020-08-28T16:34:37Z","status":"public","year":"2007","publication_identifier":{"eissn":["1361-6633"],"issn":["0034-4885"]},"language":[{"iso":"eng"}]},{"abstract":[{"lang":"eng","text":"We study graph properties which are testable for bounded degree graphs in time independent of the input size. Our goal is to distinguish between graphs having a predetermined graph property and graphs that are far from every graph having that property. It is believed that almost all, even very simple graph properties require a large complexity to be tested for arbitrary (bounded degree) graphs. Therefore in this paper we focus our attention on testing graph properties for special classes of graphs. We call a graph family non-expanding if every graph in this family is not a weak expander (its expansion is O(1/log2 n), where n is the graph size). A graph family is hereditary if it is closed under vertex removal. Similarly, a graph property is hereditary if it is closed under vertex removal. Next, we call a graph property Π to be testable for a graph family F if for every graph G ε F, in time independent of the size of G we can distinguish between the case when G satisfies property Π and when it is far from every graph satisfying property Π. In this paper we prove thatIn the bounded degree graph model, any hereditary property is testable if the input graph belongs to a hereditary and non-expanding family of graphs.As an application, our result implies that, for example, any hereditary property (e.g., k-colorability, H-freeness, etc.) is testable in the bounded degree graph model for planar graphs, graphs with bounded genus, interval graphs, etc. No such results have been known before and prior to our work, in the bounded degree graph model very few graph properties have been known to be testable for any graph classes."}],"author":[{"first_name":"Christian","full_name":"Sohler, Christian","last_name":"Sohler"},{"last_name":"Czumaj","full_name":"Czumaj, Artur","first_name":"Artur"}],"title":"On Testable Properties in Bounded Degree Graphs","department":[{"_id":"63"}],"user_id":"15415","citation":{"apa":"Sohler, C., &#38; Czumaj, A. (2007). On Testable Properties in Bounded Degree Graphs. In <i>Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)</i> (pp. 494–501).","ama":"Sohler C, Czumaj A. On Testable Properties in Bounded Degree Graphs. In: <i>Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)</i>. ; 2007:494-501.","chicago":"Sohler, Christian, and Artur Czumaj. “On Testable Properties in Bounded Degree Graphs.” In <i>Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)</i>, 494–501, 2007.","ieee":"C. Sohler and A. Czumaj, “On Testable Properties in Bounded Degree Graphs,” in <i>Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)</i>, 2007, pp. 494–501.","mla":"Sohler, Christian, and Artur Czumaj. “On Testable Properties in Bounded Degree Graphs.” <i>Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)</i>, 2007, pp. 494–501.","bibtex":"@inproceedings{Sohler_Czumaj_2007, title={On Testable Properties in Bounded Degree Graphs}, booktitle={Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07)}, author={Sohler, Christian and Czumaj, Artur}, year={2007}, pages={494–501} }","short":"C. Sohler, A. Czumaj, in: Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA’07), 2007, pp. 494–501."},"status":"public","year":"2007","type":"conference","publication_identifier":{"isbn":["9780898716245"]},"language":[{"iso":"eng"}],"publication":"Proceedings of the 17th ACM-SIAM Symposium on Discrete Algorithms (SODA'07)","date_created":"2020-08-31T07:40:36Z","date_updated":"2022-01-06T06:53:50Z","page":"494-501","_id":"18655"},{"publication":"Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)","date_created":"2020-08-31T07:49:02Z","year":"2007","type":"conference","language":[{"iso":"eng"}],"status":"public","_id":"18656","page":"69-72","date_updated":"2022-01-06T06:53:50Z","title":"StrSort Algorithms for Geometric Problems","author":[{"first_name":"Christian","full_name":"Sohler, Christian","last_name":"Sohler"},{"full_name":"Lammersen, Christiane","first_name":"Christiane","last_name":"Lammersen"}],"abstract":[{"lang":"eng","text":"In the StrSort model [2], the input is given as a stream, e.g. a sequence of points, and an algorithm can perform (a) streaming and (b) sorting passes to process the stream. A streaming pass reads the input stream from left to right and writes an output stream, which is the input of the next pass. A sorting pass is a black box operation that sorts a stream according to some partial order. In this paper, we develop algorithms for two basic geometric problems in the StrSort model. At first, we propose a divide-and-conquer algorithm that computes the convex hull of a point set in 2D in O(log2 n) passes using O(1) memory. Then we give a StrSort algorithm to compute a (1+ε)-spanner for a point set in Rd for constant d and constant epsilon that uses O(logd-1 n) passes and O(log n) space. This result implies a (1+ε)-approximation of the Euclidean minimum spanning tree in Rd, for constant d and ε."}],"citation":{"short":"C. Sohler, C. Lammersen, in: Proceedings of the 23rd European Workshop on Computational Geometry (EWCG), 2007, pp. 69–72.","mla":"Sohler, Christian, and Christiane Lammersen. “StrSort Algorithms for Geometric Problems.” <i>Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)</i>, 2007, pp. 69–72.","bibtex":"@inproceedings{Sohler_Lammersen_2007, title={StrSort Algorithms for Geometric Problems}, booktitle={Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)}, author={Sohler, Christian and Lammersen, Christiane}, year={2007}, pages={69–72} }","chicago":"Sohler, Christian, and Christiane Lammersen. “StrSort Algorithms for Geometric Problems.” In <i>Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)</i>, 69–72, 2007.","ieee":"C. Sohler and C. Lammersen, “StrSort Algorithms for Geometric Problems,” in <i>Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)</i>, 2007, pp. 69–72.","ama":"Sohler C, Lammersen C. StrSort Algorithms for Geometric Problems. In: <i>Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)</i>. ; 2007:69-72.","apa":"Sohler, C., &#38; Lammersen, C. (2007). StrSort Algorithms for Geometric Problems. In <i>Proceedings of the 23rd European Workshop on Computational Geometry (EWCG)</i> (pp. 69–72)."},"user_id":"15415","department":[{"_id":"63"}]},{"year":"2007","type":"conference","publication_identifier":{"isbn":["1-904670-02-4"]},"language":[{"iso":"eng"}],"status":"public","publication":"International Conference of Engineering Design","date_created":"2021-06-15T11:08:07Z","date_updated":"2022-01-06T06:55:31Z","_id":"22332","page":"311-323","volume":16,"intvolume":"        16","title":"Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive","author":[{"last_name":"Gausemeier","full_name":"Gausemeier, Jürgen","first_name":"Jürgen"},{"last_name":"Zimmer","id":"604","first_name":"Detmar","full_name":"Zimmer, Detmar"},{"last_name":"Frank","full_name":"Frank, Ursula","first_name":"Ursula"},{"last_name":"Pook","first_name":"Sebastian","full_name":"Pook, Sebastian"},{"full_name":"Schmidt, Alexander","first_name":"Alexander","last_name":"Schmidt"}],"department":[{"_id":"9"},{"_id":"146"}],"citation":{"bibtex":"@inproceedings{Gausemeier_Zimmer_Frank_Pook_Schmidt_2007, title={Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive}, volume={16}, booktitle={International Conference of Engineering Design}, author={Gausemeier, Jürgen and Zimmer, Detmar and Frank, Ursula and Pook, Sebastian and Schmidt, Alexander}, year={2007}, pages={311–323} }","mla":"Gausemeier, Jürgen, et al. “Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive.” <i>International Conference of Engineering Design</i>, vol. 16, 2007, pp. 311–23.","short":"J. Gausemeier, D. Zimmer, U. Frank, S. Pook, A. Schmidt, in: International Conference of Engineering Design, 2007, pp. 311–323.","ama":"Gausemeier J, Zimmer D, Frank U, Pook S, Schmidt A. Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive. In: <i>International Conference of Engineering Design</i>. Vol 16. ; 2007:311-323.","apa":"Gausemeier, J., Zimmer, D., Frank, U., Pook, S., &#38; Schmidt, A. (2007). Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive. In <i>International Conference of Engineering Design</i> (Vol. 16, pp. 311–323).","ieee":"J. Gausemeier, D. Zimmer, U. Frank, S. Pook, and A. Schmidt, “Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive,” in <i>International Conference of Engineering Design</i>, 2007, vol. 16, pp. 311–323.","chicago":"Gausemeier, Jürgen, Detmar Zimmer, Ursula Frank, Sebastian Pook, and Alexander Schmidt. “Conceptual Design of Self-Optimizing Systems Exemplified by a Magnetic Linear Drive.” In <i>International Conference of Engineering Design</i>, 16:311–23, 2007."},"user_id":"38077"},{"author":[{"first_name":"Vera","full_name":"Denzer, Vera","last_name":"Denzer"}],"title":"Dimensioning and tolerancing in international comparison. Confrontation of standardisation works of GPS and GD&T","intvolume":"        10","user_id":"38077","citation":{"apa":"Denzer, V. (2007). Dimensioning and tolerancing in international comparison. Confrontation of standardisation works of GPS and GD&#38;T. In <i>CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies</i> (Vol. 10, p. 39). Shaker Verlag .","ama":"Denzer V. Dimensioning and tolerancing in international comparison. Confrontation of standardisation works of GPS and GD&#38;T. In: <i>CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies</i>. Vol 10. Shaker Verlag ; 2007:39.","chicago":"Denzer, Vera. “Dimensioning and Tolerancing in International Comparison. Confrontation of Standardisation Works of GPS and GD&#38;T.” In <i>CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies</i>, 10:39. Shaker Verlag , 2007.","ieee":"V. Denzer, “Dimensioning and tolerancing in international comparison. Confrontation of standardisation works of GPS and GD&#38;T,” in <i>CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies</i>, 2007, vol. 10, p. 39.","mla":"Denzer, Vera. “Dimensioning and Tolerancing in International Comparison. Confrontation of Standardisation Works of GPS and GD&#38;T.” <i>CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies</i>, vol. 10, Shaker Verlag , 2007, p. 39.","bibtex":"@inproceedings{Denzer_2007, title={Dimensioning and tolerancing in international comparison. Confrontation of standardisation works of GPS and GD&#38;T}, volume={10}, booktitle={CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies}, publisher={Shaker Verlag }, author={Denzer, Vera}, year={2007}, pages={39} }","short":"V. Denzer, in: CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies, Shaker Verlag , 2007, p. 39."},"department":[{"_id":"9"},{"_id":"146"}],"publisher":"Shaker Verlag ","date_created":"2021-06-15T11:08:12Z","publication":"CIRP Conference on Computer Aided Tolerancing. Specification and Verification for Assemblies","status":"public","language":[{"iso":"eng"}],"type":"conference","year":"2007","publication_identifier":{"isbn":["978-3-8322-6036-1"]},"volume":10,"page":"39","_id":"22336","date_updated":"2022-01-06T06:55:31Z"},{"status":"public","language":[{"iso":"eng"}],"year":"2007","type":"journal_article","date_created":"2021-08-09T09:14:44Z","publication":"AIM 2007","date_updated":"2022-01-06T06:55:48Z","_id":"23282","author":[{"full_name":"Cinkaya, Hueseyin","first_name":"Hueseyin","last_name":"Cinkaya"},{"last_name":"Noelle","first_name":"Rene","full_name":"Noelle, Rene"},{"first_name":"Eckehard","full_name":"Münch, Eckehard","last_name":"Münch"},{"full_name":"Trächtler, Ansgar","first_name":"Ansgar","id":"552","last_name":"Trächtler"}],"title":"Self-Calibration of the 6-dof Parallel Robot TriPlanar by Identification of the Geometry Parameters","department":[{"_id":"153"}],"user_id":"24876","citation":{"short":"H. Cinkaya, R. Noelle, E. Münch, A. Trächtler, AIM 2007 (2007).","bibtex":"@article{Cinkaya_Noelle_Münch_Trächtler_2007, title={Self-Calibration of the 6-dof Parallel Robot TriPlanar by Identification of the Geometry Parameters}, journal={AIM 2007}, author={Cinkaya, Hueseyin and Noelle, Rene and Münch, Eckehard and Trächtler, Ansgar}, year={2007} }","mla":"Cinkaya, Hueseyin, et al. “Self-Calibration of the 6-Dof Parallel Robot TriPlanar by Identification of the Geometry Parameters.” <i>AIM 2007</i>, 2007.","ieee":"H. Cinkaya, R. Noelle, E. Münch, and A. Trächtler, “Self-Calibration of the 6-dof Parallel Robot TriPlanar by Identification of the Geometry Parameters,” <i>AIM 2007</i>, 2007.","chicago":"Cinkaya, Hueseyin, Rene Noelle, Eckehard Münch, and Ansgar Trächtler. “Self-Calibration of the 6-Dof Parallel Robot TriPlanar by Identification of the Geometry Parameters.” <i>AIM 2007</i>, 2007.","apa":"Cinkaya, H., Noelle, R., Münch, E., &#38; Trächtler, A. (2007). Self-Calibration of the 6-dof Parallel Robot TriPlanar by Identification of the Geometry Parameters. <i>AIM 2007</i>.","ama":"Cinkaya H, Noelle R, Münch E, Trächtler A. Self-Calibration of the 6-dof Parallel Robot TriPlanar by Identification of the Geometry Parameters. <i>AIM 2007</i>. 2007."}},{"department":[{"_id":"153"}],"user_id":"24876","citation":{"mla":"Cinkaya, Hueseyin, et al. “Selbstkalibrierung Des 6 DOF Parallelroboters TRIPLANAR Durch Identifikation Der Geometrieparameter Mit Einem Einfachen Messverfahren.” <i>Mechatronik 2007: Innovative Produktentwicklung</i>, 2007.","bibtex":"@article{Cinkaya_Münch_Noelle_Trächtler_Toepper_2007, title={Selbstkalibrierung des 6 DOF Parallelroboters TRIPLANAR durch Identifikation der Geometrieparameter mit einem einfachen Messverfahren}, journal={Mechatronik 2007: Innovative Produktentwicklung}, author={Cinkaya, Hueseyin and Münch, Eckehard and Noelle, Rene and Trächtler, Ansgar and Toepper, S.}, year={2007} }","short":"H. Cinkaya, E. Münch, R. Noelle, A. Trächtler, S. Toepper, Mechatronik 2007: Innovative Produktentwicklung (2007).","apa":"Cinkaya, H., Münch, E., Noelle, R., Trächtler, A., &#38; Toepper, S. (2007). Selbstkalibrierung des 6 DOF Parallelroboters TRIPLANAR durch Identifikation der Geometrieparameter mit einem einfachen Messverfahren. <i>Mechatronik 2007: Innovative Produktentwicklung</i>.","ama":"Cinkaya H, Münch E, Noelle R, Trächtler A, Toepper S. Selbstkalibrierung des 6 DOF Parallelroboters TRIPLANAR durch Identifikation der Geometrieparameter mit einem einfachen Messverfahren. <i>Mechatronik 2007: Innovative Produktentwicklung</i>. 2007.","chicago":"Cinkaya, Hueseyin, Eckehard Münch, Rene Noelle, Ansgar Trächtler, and S. Toepper. “Selbstkalibrierung Des 6 DOF Parallelroboters TRIPLANAR Durch Identifikation Der Geometrieparameter Mit Einem Einfachen Messverfahren.” <i>Mechatronik 2007: Innovative Produktentwicklung</i>, 2007.","ieee":"H. Cinkaya, E. Münch, R. Noelle, A. Trächtler, and S. Toepper, “Selbstkalibrierung des 6 DOF Parallelroboters TRIPLANAR durch Identifikation der Geometrieparameter mit einem einfachen Messverfahren,” <i>Mechatronik 2007: Innovative Produktentwicklung</i>, 2007."},"author":[{"last_name":"Cinkaya","full_name":"Cinkaya, Hueseyin","first_name":"Hueseyin"},{"first_name":"Eckehard","full_name":"Münch, Eckehard","last_name":"Münch"},{"last_name":"Noelle","first_name":"Rene","full_name":"Noelle, Rene"},{"first_name":"Ansgar","full_name":"Trächtler, Ansgar","last_name":"Trächtler","id":"552"},{"full_name":"Toepper, S.","first_name":"S.","last_name":"Toepper"}],"title":"Selbstkalibrierung des 6 DOF Parallelroboters TRIPLANAR durch Identifikation der Geometrieparameter mit einem einfachen Messverfahren","date_updated":"2022-01-06T06:55:48Z","_id":"23286","status":"public","language":[{"iso":"eng"}],"year":"2007","type":"journal_article","date_created":"2021-08-09T09:14:48Z","publication":"Mechatronik 2007: Innovative Produktentwicklung"},{"_id":"9562","date_updated":"2022-01-06T07:04:16Z","date_created":"2019-04-29T10:11:16Z","publication":"Proceedings of 19th international congress on Acoustics, Madrid","quality_controlled":"1","language":[{"iso":"eng"}],"year":"2007","type":"conference","status":"public","citation":{"apa":"Camarena Gandia, F., Hemsel, T., Espinosa, V., Twiefel, J., Ardid, M., Martinez-Mora, J., &#38; Gandia, J. B. (2007). Non-destructive ultrasonic test of orange dehydration. In <i>Proceedings of 19th international congress on Acoustics, Madrid</i>.","ama":"Camarena Gandia F, Hemsel T, Espinosa V, et al. Non-destructive ultrasonic test of orange dehydration. In: <i>Proceedings of 19th International Congress on Acoustics, Madrid</i>. ; 2007.","chicago":"Camarena Gandia, Francisco, Tobias Hemsel, Victor Espinosa, Jens Twiefel, Miquel Ardid, Joan Martinez-Mora, and Joan Babtiste Gandia. “Non-Destructive Ultrasonic Test of Orange Dehydration.” In <i>Proceedings of 19th International Congress on Acoustics, Madrid</i>, 2007.","ieee":"F. Camarena Gandia <i>et al.</i>, “Non-destructive ultrasonic test of orange dehydration,” in <i>Proceedings of 19th international congress on Acoustics, Madrid</i>, 2007.","mla":"Camarena Gandia, Francisco, et al. “Non-Destructive Ultrasonic Test of Orange Dehydration.” <i>Proceedings of 19th International Congress on Acoustics, Madrid</i>, 2007.","bibtex":"@inproceedings{Camarena Gandia_Hemsel_Espinosa_Twiefel_Ardid_Martinez-Mora_Gandia_2007, title={Non-destructive ultrasonic test of orange dehydration}, booktitle={Proceedings of 19th international congress on Acoustics, Madrid}, author={Camarena Gandia, Francisco and Hemsel, Tobias and Espinosa, Victor and Twiefel, Jens and Ardid, Miquel and Martinez-Mora, Joan and Gandia, Joan Babtiste}, year={2007} }","short":"F. Camarena Gandia, T. Hemsel, V. Espinosa, J. Twiefel, M. Ardid, J. Martinez-Mora, J.B. Gandia, in: Proceedings of 19th International Congress on Acoustics, Madrid, 2007."},"user_id":"55222","department":[{"_id":"151"}],"title":"Non-destructive ultrasonic test of orange dehydration","author":[{"last_name":"Camarena Gandia","first_name":"Francisco","full_name":"Camarena Gandia, Francisco"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","last_name":"Hemsel","id":"210"},{"full_name":"Espinosa, Victor","first_name":"Victor","last_name":"Espinosa"},{"first_name":"Jens","full_name":"Twiefel, Jens","last_name":"Twiefel"},{"last_name":"Ardid","full_name":"Ardid, Miquel","first_name":"Miquel"},{"first_name":"Joan","full_name":"Martinez-Mora, Joan","last_name":"Martinez-Mora"},{"full_name":"Gandia, Joan Babtiste","first_name":"Joan Babtiste","last_name":"Gandia"}],"abstract":[{"text":"Penetration tests (Magness-Taylor, force/deformation, Kramer multiblade shear) applied directly over the peel of the fruit are the most acceptable methods for measuring firmness and turgidity of fruits and vegetables [1, 2]. To replace these destructive and mechanical penetration methods by non-destructive ultrasonic measurements implies a great advance in order to obtain fast studies about the state of the fruit at the time of harvest, during storage, and in the distribution points. Moreover, there are other advantages since this technique can be fast, non-destructive, fully automated, and performed on-line [1]. Within this context, the objective of this study was to examine the relationship between physico-mechanical characteristics (oil-gland break stress, thickness and dehydration) and ultrasonic characteristics in the ``Salustiana'' orange peel during the complete dehydration process of the orange at ambient conditions. After a description of the measurement system [3], the fruit selection procedure and the measurement protocol, we analyze the results of the change of physico-mechanical and ultrasonic properties in the orange peel and their change with storage time.","lang":"eng"}]},{"date_created":"2018-09-19T09:17:23Z","publication_identifier":{"isbn":["978-3-925474-60-6"]},"year":"2007","status":"public","_id":"4496","date_updated":"2022-01-06T07:01:06Z","conference":{"end_date":"2007-10-12","location":"Frankfurt am Main ","start_date":"2007-10-10","name":"29. Online-Tagung der DGI"},"author":[{"full_name":"Heinze, Nina","first_name":"Nina","last_name":"Heinze"},{"last_name":"Sporer","full_name":"Sporer, Thomas","first_name":"Thomas"},{"first_name":"Tobias","full_name":"Jenert, Tobias","last_name":"Jenert","id":"71994","orcid":" https://orcid.org/0000-0001-9262-5646"}],"place":"Frankfurt am Main ","intvolume":"         9","citation":{"chicago":"Heinze, Nina, Thomas Sporer, and Tobias Jenert. “Semivirtuelle Lernumgebung Zum Wissenschaftlichen Arbeiten Als Ergänzung Des Studienangebots Der Universität Augsburg.” In <i>Deutsche Gesellschaft Für Informationswissenschaft Und Informationspraxis: Tagungen Der Deutschen Gesellschaft Für Informationswissenschaft Und Informationspraxis</i>, 9:319–28. Frankfurt am Main , 2007.","ieee":"N. Heinze, T. Sporer, and T. Jenert, “Semivirtuelle Lernumgebung zum wissenschaftlichen Arbeiten als Ergänzung des Studienangebots der Universität Augsburg,” in <i>Deutsche Gesellschaft für Informationswissenschaft und Informationspraxis: Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis</i>, Frankfurt am Main , 2007, vol. 9, pp. 319–328.","apa":"Heinze, N., Sporer, T., &#38; Jenert, T. (2007). Semivirtuelle Lernumgebung zum wissenschaftlichen Arbeiten als Ergänzung des Studienangebots der Universität Augsburg. In <i>Deutsche Gesellschaft für Informationswissenschaft und Informationspraxis: Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis</i> (Vol. 9, pp. 319–328). Frankfurt am Main .","ama":"Heinze N, Sporer T, Jenert T. Semivirtuelle Lernumgebung zum wissenschaftlichen Arbeiten als Ergänzung des Studienangebots der Universität Augsburg. In: <i>Deutsche Gesellschaft Für Informationswissenschaft Und Informationspraxis: Tagungen Der Deutschen Gesellschaft Für Informationswissenschaft Und Informationspraxis</i>. Vol 9. Frankfurt am Main ; 2007:319-328.","short":"N. Heinze, T. Sporer, T. Jenert, in: Deutsche Gesellschaft Für Informationswissenschaft Und Informationspraxis: Tagungen Der Deutschen Gesellschaft Für Informationswissenschaft Und Informationspraxis, Frankfurt am Main , 2007, pp. 319–328.","mla":"Heinze, Nina, et al. “Semivirtuelle Lernumgebung Zum Wissenschaftlichen Arbeiten Als Ergänzung Des Studienangebots Der Universität Augsburg.” <i>Deutsche Gesellschaft Für Informationswissenschaft Und Informationspraxis: Tagungen Der Deutschen Gesellschaft Für Informationswissenschaft Und Informationspraxis</i>, vol. 9, 2007, pp. 319–28.","bibtex":"@inproceedings{Heinze_Sporer_Jenert_2007, place={Frankfurt am Main }, title={Semivirtuelle Lernumgebung zum wissenschaftlichen Arbeiten als Ergänzung des Studienangebots der Universität Augsburg}, volume={9}, booktitle={Deutsche Gesellschaft für Informationswissenschaft und Informationspraxis: Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis}, author={Heinze, Nina and Sporer, Thomas and Jenert, Tobias}, year={2007}, pages={319–328} }"},"department":[{"_id":"208"},{"_id":"282"}],"publication":"Deutsche Gesellschaft für Informationswissenschaft und Informationspraxis: Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis","type":"conference","page":"319-328","volume":9,"title":"Semivirtuelle Lernumgebung zum wissenschaftlichen Arbeiten als Ergänzung des Studienangebots der Universität Augsburg","extern":"1","alternative_title":["Information in Wissenschaft, Bildung und Wirtschaft"],"user_id":"51057","keyword":["Wissenschaftliches Arbeiten","Blended Learning","Tutoring"]},{"author":[{"last_name":"Sporer","full_name":"Sporer, Thomas","first_name":"Thomas"},{"full_name":"Reinmann, Gabi","first_name":"Gabi","last_name":"Reinmann"},{"orcid":" https://orcid.org/0000-0001-9262-5646","last_name":"Jenert","id":"71994","first_name":"Tobias","full_name":"Jenert, Tobias"},{"last_name":"Hofhues","first_name":"Sandra","full_name":"Hofhues, Sandra"}],"editor":[{"full_name":"Merkt, Marianne","first_name":"Marianne","last_name":"Merkt"},{"first_name":"Kerstin","full_name":"Mayrberger, Kerstin","last_name":"Mayrberger"},{"last_name":"Schulmeister","full_name":"Schulmeister, Rolf","first_name":"Rolf"},{"full_name":"Sommer, Angela","first_name":"Angela","last_name":"Sommer"},{"first_name":"Ivo","full_name":"van den Berk, Ivo","last_name":"van den Berk"}],"place":"Münster","intvolume":"        44","citation":{"mla":"Sporer, Thomas, et al. “Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen.” <i>Studieren neu erfinden - Hochschule neu denken</i>, edited by Marianne Merkt et al., vol. 44, Waxmann Verlag GmbH , 2007, pp. 85–94.","bibtex":"@inbook{Sporer_Reinmann_Jenert_Hofhues_2007, place={Münster}, series={Medien in der Wissenschaft }, title={Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen}, volume={44}, booktitle={Studieren neu erfinden - Hochschule neu denken}, publisher={Waxmann Verlag GmbH }, author={Sporer, Thomas and Reinmann, Gabi and Jenert, Tobias and Hofhues, Sandra}, editor={Merkt, Marianne and Mayrberger, Kerstin and Schulmeister, Rolf and Sommer, Angela and van den Berk, IvoEditors}, year={2007}, pages={85–94}, collection={Medien in der Wissenschaft } }","short":"T. Sporer, G. Reinmann, T. Jenert, S. Hofhues, in: M. Merkt, K. Mayrberger, R. Schulmeister, A. Sommer, I. van den Berk (Eds.), Studieren neu erfinden - Hochschule neu denken, Waxmann Verlag GmbH , Münster, 2007, pp. 85–94.","apa":"Sporer, T., Reinmann, G., Jenert, T., &#38; Hofhues, S. (2007). Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen. In M. Merkt, K. Mayrberger, R. Schulmeister, A. Sommer, &#38; I. van den Berk (Eds.), <i>Studieren neu erfinden - Hochschule neu denken</i> (Vol. 44, pp. 85–94). Münster: Waxmann Verlag GmbH .","ama":"Sporer T, Reinmann G, Jenert T, Hofhues S. Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen. In: Merkt M, Mayrberger K, Schulmeister R, Sommer A, van den Berk I, eds. <i>Studieren neu erfinden - Hochschule neu denken</i>. Vol 44. Medien in der Wissenschaft . Münster: Waxmann Verlag GmbH ; 2007:85-94.","chicago":"Sporer, Thomas, Gabi Reinmann, Tobias Jenert, and Sandra Hofhues. “Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen.” In <i>Studieren neu erfinden - Hochschule neu denken</i>, edited by Marianne Merkt, Kerstin Mayrberger, Rolf Schulmeister, Angela Sommer, and Ivo van den Berk, 44:85–94. Medien in der Wissenschaft . Münster: Waxmann Verlag GmbH , 2007.","ieee":"T. Sporer, G. Reinmann, T. Jenert, and S. Hofhues, “Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen,” in <i>Studieren neu erfinden - Hochschule neu denken</i>, vol. 44, M. Merkt, K. Mayrberger, R. Schulmeister, A. Sommer, and I. van den Berk, Eds. Münster: Waxmann Verlag GmbH , 2007, pp. 85–94."},"series_title":"Medien in der Wissenschaft ","department":[{"_id":"208"},{"_id":"282"}],"date_created":"2018-09-20T08:59:01Z","publisher":"Waxmann Verlag GmbH ","language":[{"iso":"ger"}],"year":"2007","publication_identifier":{"isbn":["978-3-8309-1877-6"]},"status":"public","_id":"4528","date_updated":"2022-01-06T07:01:08Z","title":"Begleitstudium Problemlösekompetenz (Version 2.0). Infrastruktur für studentische Projekte an Hochschulen","extern":"1","user_id":"51057","publication":"Studieren neu erfinden - Hochschule neu denken","type":"book_chapter","page":"85 - 94","volume":44},{"author":[{"last_name":"Tönnies","id":"555","full_name":"Tönnies, Merle","first_name":"Merle"}],"title":"Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood","alternative_title":["Thinking Northern. Textures of Identity in the North of England"],"publication_status":"published","user_id":"32277","citation":{"apa":"Tönnies, M. (2007). Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood. <i>Spatial Practices 2</i>, 305–324.","ama":"Tönnies M. Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood. <i>Spatial Practices 2</i>. 2007:305-324.","ieee":"M. Tönnies, “Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood,” <i>Spatial Practices 2</i>, pp. 305–324, 2007.","chicago":"Tönnies, Merle. “Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood.” <i>Spatial Practices 2</i>, 2007, 305–24.","bibtex":"@article{Tönnies_2007, title={Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood}, journal={Spatial Practices 2}, publisher={Rodopi}, author={Tönnies, Merle}, year={2007}, pages={305–324} }","mla":"Tönnies, Merle. “Constructing an Emblematic Northern Space. The New Brighton Photographs of Martin Parr and Tom Wood.” <i>Spatial Practices 2</i>, Rodopi, 2007, pp. 305–24.","short":"M. Tönnies, Spatial Practices 2 (2007) 305–324."},"department":[{"_id":"36"},{"_id":"1"},{"_id":"380"}],"publisher":"Rodopi","date_created":"2019-02-07T17:20:16Z","publication":"Spatial Practices 2","status":"public","language":[{"iso":"eng"}],"year":"2007","type":"journal_article","page":"305-324","_id":"7597","date_updated":"2022-01-06T07:03:40Z"},{"file_date_updated":"2018-12-18T13:27:01Z","_id":"5658","date_updated":"2022-01-06T07:02:22Z","publisher":"Elsevier","date_created":"2018-11-14T14:53:12Z","status":"public","language":[{"iso":"eng"}],"year":"2007","citation":{"short":"G. Schryen, Computers &#38; Security 2 (2007) 361–372.","bibtex":"@article{Schryen_2007, title={The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis}, volume={2}, number={5}, journal={Computers &#38; Security}, publisher={Elsevier}, author={Schryen, Guido}, year={2007}, pages={361–372} }","mla":"Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has on the Receipt of Spam ? An Empirical Analysis.” <i>Computers &#38; Security</i>, vol. 2, no. 5, Elsevier, 2007, pp. 361–72.","ieee":"G. Schryen, “The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis,” <i>Computers &#38; Security</i>, vol. 2, no. 5, pp. 361–372, 2007.","chicago":"Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has on the Receipt of Spam ? An Empirical Analysis.” <i>Computers &#38; Security</i> 2, no. 5 (2007): 361–72.","ama":"Schryen G. The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis. <i>Computers &#38; Security</i>. 2007;2(5):361-372.","apa":"Schryen, G. (2007). The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis. <i>Computers &#38; Security</i>, <i>2</i>(5), 361–372."},"department":[{"_id":"277"}],"author":[{"first_name":"Guido","full_name":"Schryen, Guido","last_name":"Schryen","id":"72850"}],"intvolume":"         2","volume":2,"page":"361-372","issue":"5","ddc":["000"],"publication":"Computers & Security","type":"journal_article","keyword":["Address-obfuscating techniques","email","empirical analysis","honeypot","security by design","security by obscurity","spam"],"user_id":"61579","oa":"1","extern":"1","file":[{"file_id":"6326","access_level":"open_access","content_type":"application/pdf","date_created":"2018-12-18T13:27:01Z","creator":"hsiemes","file_name":"The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam - An Empirical Analysis - Journal version.pdf","file_size":3026200,"date_updated":"2018-12-18T13:27:01Z","relation":"main_file"}],"title":"The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis","has_accepted_license":"1","abstract":[{"lang":"eng","text":"Email communication is encumbered with a mass of email messages which their recipients have neither requested nor require. Even worse, the impacts of these messages are far from being simply an annoyance, as they also involve economic damage. This manuscript examines the resource ?email addresses?, which is vital for any potential bulk mailer and spammer. Both a methodology and a honeypot conceptualization for implementing an empirical analysis of the usage of email addresses placed on the Internet are proposed here. Their objective is to assess, on a quantitative basis, the extent of the current harassment and its development over time. This ?framework? is intended to be extensible to measuring the effectiveness of address-obscuring techniques. The implementation of a pilot honeypot is described, which led to key findings, some of them being: (1) Web placements attract more than two-thirds (70\\%) of all honeypot spam emails, followed by newsgroup placements (28.6\\%) and newsletter subscriptions (1.4\\%), (2) the proportions of spam relating to the email addresses? top-level domain can be statistically assumed to be uniformly distributed, (3) More than 43\\% of addresses on the web have been abused, whereas about 27\\% was the case for addresses on newsgroups and only about 4\\% was the case for addresses used for a newsletter subscription, (4) Regarding the development of email addresses? attractiveness for spammers over time, the service ?web sites? features a negative linear relationship, whereas the service ?Usenet? hows a negative exponential relationship. (5) Only 1.54\\% of the spam emails showed an interrelation between the topic of the spam email and that of the location where the recipient?s address was placed, so that spammers are assumed to send their emails in a ?context insensitive? manner. The results of the empirical analysis motivate the need for the protection of email addresses through obscuration. We analyze this need by formulating requirements for address obscuring techniques and we reveal to which extent today?s most relevant approaches fulfill these requirements."}]},{"language":[{"iso":"eng"}],"type":"book","year":"2007","status":"public","date_created":"2019-01-16T09:21:35Z","publisher":"Narr Studienbücher","date_updated":"2022-01-06T07:03:17Z","_id":"6751","place":"Tübingen","title":"Introduction to the Study of British Culture","author":[{"full_name":"Tönnies, Merle","first_name":"Merle","last_name":"Tönnies","id":"555"},{"full_name":"Voigt, Ulrich","first_name":"Ulrich","last_name":"Voigt"}],"department":[{"_id":"36"},{"_id":"1"},{"_id":"380"}],"citation":{"apa":"Tönnies, M., &#38; Voigt, U. (2007). <i>Introduction to the Study of British Culture</i>. Tübingen: Narr Studienbücher.","ama":"Tönnies M, Voigt U. <i>Introduction to the Study of British Culture</i>. Tübingen: Narr Studienbücher; 2007.","ieee":"M. Tönnies and U. Voigt, <i>Introduction to the Study of British Culture</i>. Tübingen: Narr Studienbücher, 2007.","chicago":"Tönnies, Merle, and Ulrich Voigt. <i>Introduction to the Study of British Culture</i>. Tübingen: Narr Studienbücher, 2007.","bibtex":"@book{Tönnies_Voigt_2007, place={Tübingen}, title={Introduction to the Study of British Culture}, publisher={Narr Studienbücher}, author={Tönnies, Merle and Voigt, Ulrich}, year={2007} }","mla":"Tönnies, Merle, and Ulrich Voigt. <i>Introduction to the Study of British Culture</i>. Narr Studienbücher, 2007.","short":"M. Tönnies, U. Voigt, Introduction to the Study of British Culture, Narr Studienbücher, Tübingen, 2007."},"publication_status":"published","user_id":"32277"},{"type":"book_chapter","year":"2007","language":[{"iso":"eng"}],"status":"public","publication":"Viewfinder Special. Lese-und Arbeitsbuch für die gymnasiale Oberstufe","date_created":"2019-01-16T09:36:43Z","publisher":"Langenscheidt","date_updated":"2022-01-06T07:03:17Z","_id":"6759","page":"96-111","place":"Berlin","title":"London-Diversity and Myth","editor":[{"last_name":"Freese","first_name":"Peter","full_name":"Freese, Peter"}],"author":[{"full_name":"Tönnies, Merle","first_name":"Merle","last_name":"Tönnies","id":"555"}],"department":[{"_id":"36"},{"_id":"1"},{"_id":"380"}],"citation":{"short":"M. Tönnies, in: P. Freese (Ed.), Viewfinder Special. Lese-Und Arbeitsbuch Für Die Gymnasiale Oberstufe, Langenscheidt, Berlin, 2007, pp. 96–111.","bibtex":"@inbook{Tönnies_2007, place={Berlin}, title={London-Diversity and Myth}, booktitle={Viewfinder Special. Lese-und Arbeitsbuch für die gymnasiale Oberstufe}, publisher={Langenscheidt}, author={Tönnies, Merle}, editor={Freese, PeterEditor}, year={2007}, pages={96–111} }","mla":"Tönnies, Merle. “London-Diversity and Myth.” <i>Viewfinder Special. Lese-Und Arbeitsbuch Für Die Gymnasiale Oberstufe</i>, edited by Peter Freese, Langenscheidt, 2007, pp. 96–111.","ieee":"M. Tönnies, “London-Diversity and Myth,” in <i>Viewfinder Special. Lese-und Arbeitsbuch für die gymnasiale Oberstufe</i>, P. Freese, Ed. Berlin: Langenscheidt, 2007, pp. 96–111.","chicago":"Tönnies, Merle. “London-Diversity and Myth.” In <i>Viewfinder Special. Lese-Und Arbeitsbuch Für Die Gymnasiale Oberstufe</i>, edited by Peter Freese, 96–111. Berlin: Langenscheidt, 2007.","apa":"Tönnies, M. (2007). London-Diversity and Myth. In P. Freese (Ed.), <i>Viewfinder Special. Lese-und Arbeitsbuch für die gymnasiale Oberstufe</i> (pp. 96–111). Berlin: Langenscheidt.","ama":"Tönnies M. London-Diversity and Myth. In: Freese P, ed. <i>Viewfinder Special. Lese-Und Arbeitsbuch Für Die Gymnasiale Oberstufe</i>. Berlin: Langenscheidt; 2007:96-111."},"user_id":"32277","publication_status":"published"},{"citation":{"apa":"Rautenberg, J., &#38; Henning, B. (2007). New approach for the reliable measurement of acoustic impedance of liquids in an acoustic waveguide (Vol. II, pp. 87–92). Presented at the 13th International Conference Sensor + Test 2007, Nürnberg.","ama":"Rautenberg J, Henning B. New approach for the reliable measurement of acoustic impedance of liquids in an acoustic waveguide. In: Vol II. ; 2007:87-92.","chicago":"Rautenberg, Jens, and Bernd Henning. “New Approach for the Reliable Measurement of Acoustic Impedance of Liquids in an Acoustic Waveguide,” II:87–92, 2007.","ieee":"J. Rautenberg and B. Henning, “New approach for the reliable measurement of acoustic impedance of liquids in an acoustic waveguide,” presented at the 13th International Conference Sensor + Test 2007, Nürnberg, 2007, vol. II, pp. 87–92.","mla":"Rautenberg, Jens, and Bernd Henning. <i>New Approach for the Reliable Measurement of Acoustic Impedance of Liquids in an Acoustic Waveguide</i>. Vol. II, 2007, pp. 87–92.","bibtex":"@inproceedings{Rautenberg_Henning_2007, title={New approach for the reliable measurement of acoustic impedance of liquids in an acoustic waveguide}, volume={II}, author={Rautenberg, Jens and Henning, Bernd}, year={2007}, pages={87–92} }","short":"J. Rautenberg, B. Henning, in: 2007, pp. 87–92."},"user_id":"15911","department":[{"_id":"49"}],"conference":{"location":"Nürnberg","start_date":"22.05.2007","name":"13th International Conference Sensor + Test 2007","end_date":"24.05.2007"},"title":"New approach for the reliable measurement of acoustic impedance of liquids in an acoustic waveguide","author":[{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"},{"last_name":"Henning","id":"213","first_name":"Bernd","full_name":"Henning, Bernd"}],"abstract":[{"text":"Continuous and reliable concentration measurement of liquids still is a great challenge as the sensor systems have to meet high industrial requirements. Apart from chemical sensors there are a couple of acoustic systems [1] that are well suited for a lot of industrial applications. Most of them determine the amplitude ratio of deflected ultrasound bursts at different boundaries as well as the sound velocity of the liquid in order to calculate its acoustic impedance and therewith its density. The advantages of acoustic sensors are their robustness and their fast response. Their disadvantages are sensitivity against variations of the reference material properties as well as abrasion or soiling of the boundaries. This contribution is about a new model-based method that uses the whole surface of an acoustic waveguide as reference boundary: It has turned out that the principal components of a signal at the end of the waveguide can be assigned to the different propagative acoustic modes (Fig. 1). Therefore it is necessary to use different simulation tools, e.g. FEM and modal analysis (Fig. 2). With this it is possible to determine the amplitudes of each mode by means of one measured signal at the end of the waveguide and Gauss Algorithm even if the transducer is of very simple kind [2]. Therewith it is possible to get redundant information -- one amplitude for each mode -- for the liquid impedance. In addition to that it is possible to generate an acoustic reference signal without information about the liquid impedance but dissipation if we use the fundamental mode. The different signal amplitudes and a model of acoustic wave propagation [2, 3] offer the possibility to distinguish between dissipation in the liquid and attenuation due to the impedance relations. Moreover, if there are enough analysable amplitudes available, variations of the reference material properties can be determined.","lang":"eng"}],"_id":"15339","page":"87-92","volume":"II","date_updated":"2022-01-06T06:52:20Z","date_created":"2019-12-17T13:22:24Z","type":"conference","publication_identifier":{"isbn":["978-3-9810993-2-4"]},"year":"2007","language":[{"iso":"eng"}],"status":"public"},{"date_updated":"2022-01-06T06:52:21Z","_id":"15344","status":"public","language":[{"iso":"eng"}],"type":"conference","publication_identifier":{"isbn":["978-3-9810993-2-4"]},"year":"2007","date_created":"2019-12-17T14:22:24Z","department":[{"_id":"49"}],"user_id":"15911","citation":{"apa":"Vössing, T., Rautenberg, J., Kehl, R., &#38; Henning, B. (2007). Simultaneous transmitting and receiving with ultrasonic sensors. Presented at the 3th International Conference Sensor + Test 2007, Nuremberg.","ama":"Vössing T, Rautenberg J, Kehl R, Henning B. Simultaneous transmitting and receiving with ultrasonic sensors. In: ; 2007.","ieee":"T. Vössing, J. Rautenberg, R. Kehl, and B. Henning, “Simultaneous transmitting and receiving with ultrasonic sensors,” presented at the 3th International Conference Sensor + Test 2007, Nuremberg, 2007.","chicago":"Vössing, Torsten, Jens Rautenberg, Romina Kehl, and Bernd Henning. “Simultaneous Transmitting and Receiving with Ultrasonic Sensors,” 2007.","bibtex":"@inproceedings{Vössing_Rautenberg_Kehl_Henning_2007, title={Simultaneous transmitting and receiving with ultrasonic sensors}, author={Vössing, Torsten and Rautenberg, Jens and Kehl, Romina and Henning, Bernd}, year={2007} }","mla":"Vössing, Torsten, et al. <i>Simultaneous Transmitting and Receiving with Ultrasonic Sensors</i>. 2007.","short":"T. Vössing, J. Rautenberg, R. Kehl, B. Henning, in: 2007."},"abstract":[{"lang":"eng","text":"In many applications ultrasonic transducers are used for transmitting and receiving ultrasonic waves. Ultrasonic sensor systems meet the practical requirements of industrial applications quite well. Typical sensor applications are for example the measurement of distance and thickness. Especially if only one ultrasonic transceiver and the well-known pulse-echo-method are used, the sensor electronics has to switch from transmitting to receiving mode. This is one of the most limiting properties because the probe can not receive echoes from nearby obstacles or thin material layers. This contribution deals with the development of an electronic interface circuit for ultrasonic sensors allowing transmitting and receiving of acoustic signals simultaneously. There are already several methods to separate the transmitted from the received signal for instance the well-known circulator in the telephone, the differential transformer mentioned by Bradfield [1] or a directional coupler [2]. The directional coupler consists of two broadband transformers linked with each other in such a way that it equally distributes the input power at port one to the third and fourth port, while port two is isolated. This circuit is also known as 3 dB directional coupler and makes it possible to get reference echoes directly from the interface between the sensor and the medium of interest. Several reflectors or multiple sound paths such as used in ultrasonic density measurement systems are unnecessary [3]."}],"author":[{"last_name":"Vössing","full_name":"Vössing, Torsten","first_name":"Torsten"},{"first_name":"Jens","full_name":"Rautenberg, Jens","last_name":"Rautenberg"},{"first_name":"Romina","full_name":"Kehl, Romina","last_name":"Kehl"},{"full_name":"Henning, Bernd","first_name":"Bernd","id":"213","last_name":"Henning"}],"title":"Simultaneous transmitting and receiving with ultrasonic sensors","conference":{"name":"3th International Conference Sensor + Test 2007","start_date":"22.05.2007","location":"Nuremberg","end_date":"24.05.2007"}}]