TY - CHAP A1 - Capitain, C. A1 - Hering, T. A1 - Tippkötter, Nils A1 - Ulber, R. T1 - Enzymatic polymerization of lignin model compounds and solubilized lignin in an aqueous ethanol extract T2 - New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany Y1 - 2016 SP - 151 EP - 152 PB - DECHEMA CY - Frankfurt am Main ER - TY - CHAP A1 - Caminos, Ricardo Alexander Chico A1 - Schmitz, Pascal A1 - Atti, Vikrama A1 - Mahdi, Zahra A1 - Teixeira Boura, Cristiano José A1 - Sattler, Johannes Christoph A1 - Herrmann, Ulf A1 - Hilger, Patrick A1 - Dieckmann, Simon T1 - Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method T2 - SOLARPACES 2020 N2 - The Solar-Institut Jülich (SIJ) and the companies Hilger GmbH and Heliokon GmbH from Germany have developed a small-scale cost-effective heliostat, called “micro heliostat”. Micro heliostats can be deployed in small-scale concentrated solar power (CSP) plants to concentrate the sun's radiation for electricity generation, space or domestic water heating or industrial process heat. In contrast to conventional heliostats, the special feature of a micro heliostat is that it consists of dozens of parallel-moving, interconnected, rotatable mirror facets. The mirror facets array is fixed inside a box-shaped module and is protected from weathering and wind forces by a transparent glass cover. The choice of the building materials for the box, tracking mechanism and mirrors is largely dependent on the selected production process and the intended application of the micro heliostat. Special attention was paid to the material of the tracking mechanism as this has a direct influence on the accuracy of the micro heliostat. The choice of materials for the mirror support structure and the tracking mechanism is made in favor of plastic molded parts. A qualification assessment method has been developed by the SIJ in which a 3D laser scanner is used in combination with a coordinate measuring machine (CMM). For the validation of this assessment method, a single mirror facet was scanned and the slope deviation was computed. KW - Concentrated solar power KW - Electricity generation KW - Measuring instruments KW - Heliostats KW - Global change Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086262 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Cacciatore, Pamela A1 - Butenweg, Christoph T1 - Seismic safety of cylindrical granular material steel silos under seismic loading T2 - Seismic design of industrial facilities 2020: proceedings of the 2nd International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) Y1 - 2020 SN - 978-3-86359-729-0 SP - 231 EP - 244 ER - TY - CHAP A1 - Büsgen, André A1 - Klöser, Lars A1 - Kohl, Philipp A1 - Schmidts, Oliver A1 - Kraft, Bodo A1 - Zündorf, Albert T1 - Exploratory analysis of chat-based black market profiles with natural language processing T2 - Proceedings of the 11th International Conference on Data Science, Technology and Applications N2 - Messenger apps like WhatsApp or Telegram are an integral part of daily communication. Besides the various positive effects, those services extend the operating range of criminals. Open trading groups with many thousand participants emerged on Telegram. Law enforcement agencies monitor suspicious users in such chat rooms. This research shows that text analysis, based on natural language processing, facilitates this through a meaningful domain overview and detailed investigations. We crawled a corpus from such self-proclaimed black markets and annotated five attribute types products, money, payment methods, user names, and locations. Based on each message a user sends, we extract and group these attributes to build profiles. Then, we build features to cluster the profiles. Pretrained word vectors yield better unsupervised clustering results than current state-of-the-art transformer models. The result is a semantically meaningful high-level overview of the user landscape of black market chatrooms. Additionally, the extracted structured information serves as a foundation for further data exploration, for example, the most active users or preferred payment methods. KW - Clustering KW - Natural Language Processing KW - Information Extraction KW - Profile Extraction KW - Text Mining Y1 - 2022 SN - 978-989-758-583-8 U6 - http://dx.doi.org/10.5220/0011271400003269 SN - 2184-285X SP - 83 EP - 94 ER - TY - CHAP A1 - Büsgen, André A1 - Klöser, Lars A1 - Kohl, Philipp A1 - Schmidts, Oliver A1 - Kraft, Bodo A1 - Zündorf, Albert ED - Cuzzocrea, Alfredo ED - Gusikhin, Oleg ED - Hammoudi, Slimane ED - Quix, Christoph T1 - From cracked accounts to fake IDs: user profiling on German telegram black market channels T2 - Data Management Technologies and Applications N2 - Messenger apps like WhatsApp and Telegram are frequently used for everyday communication, but they can also be utilized as a platform for illegal activity. Telegram allows public groups with up to 200.000 participants. Criminals use these public groups for trading illegal commodities and services, which becomes a concern for law enforcement agencies, who manually monitor suspicious activity in these chat rooms. This research demonstrates how natural language processing (NLP) can assist in analyzing these chat rooms, providing an explorative overview of the domain and facilitating purposeful analyses of user behavior. We provide a publicly available corpus of annotated text messages with entities and relations from four self-proclaimed black market chat rooms. Our pipeline approach aggregates the extracted product attributes from user messages to profiles and uses these with their sold products as features for clustering. The extracted structured information is the foundation for further data exploration, such as identifying the top vendors or fine-granular price analyses. Our evaluation shows that pretrained word vectors perform better for unsupervised clustering than state-of-the-art transformer models, while the latter is still superior for sequence labeling. KW - Clustering KW - Natural language processing KW - Information extraction KW - Profile extraction KW - Text mining Y1 - 2023 SN - 978-3-031-37889-8 (Print) SN - 978-3-031-37890-4 (Online) U6 - http://dx.doi.org/10.1007/978-3-031-37890-4_9 N1 - 10th International Conference, DATA 2021, Virtual Event, July 6–8, 2021, and 11th International Conference, DATA 2022, Lisbon, Portugal, July 11-13, 2022 SP - 176 EP - 202 PB - Springer CY - Cham ER - TY - CHAP A1 - Bücking, Henrik A1 - Pfaff, Raphael A1 - Dirksmeier, Roger T1 - Sensor positioning and thermal model for condition monitoring of pressure gas reservoirs in vehicles T2 - Proceedings of the Fourth European Conference of the Prognostics and Health Management Society, Utrecht, Netherlands, 2018 Y1 - 2018 ER - TY - CHAP A1 - Börner, Sebastian A1 - Funke, Harald A1 - Hendrick, P. A1 - Recker, E. T1 - LES of Jets In Cross-Flow and Application to the “Micromix” Hydrogen Combustion T2 - XIX International Symposium on Air Breathing Engines 2009 (ISABE 2009) : Proceedings of a meeting held 7-11 September 2009, Montreal, Canada Y1 - 2009 SN - 9781615676064 SP - 1555 EP - 1561 ER - TY - CHAP A1 - Böhm, Stefan A1 - Hellmanns, Mark A1 - Backes, Andreas A1 - Dilger, Klaus T1 - Lock-in thermography based NDT of automotive parts T2 - Proceedings of the 3rd World Congress on Adhesion and Related Phenomena : WCARP-III, October 15 -18, 2006, Beijing, China Y1 - 2006 SP - 382 EP - 384 PB - Beijing Adhesion Society of China CY - Beijing ER - TY - CHAP A1 - Bäcker, Matthias A1 - Schusser, Sebastian A1 - Leinhos, Marcel A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - Sensor system for the monitoring of degradation processes of biodegradable biopolymers T2 - Sensoren und Messsysteme 2014 ; Beiträge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in Nürnberg. (ITG-Fachbericht ; 250) Y1 - 2014 SN - 978-3-8007-3622-5 SP - 1 EP - 4 PB - VDE-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Bäcker, Matthias A1 - Koch, C. A1 - Geiger, F. A1 - Eber, F. A1 - Gliemann, H. A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - A New Class of Biosensors Based on Tobacco Mosaic Virus and Coat Proteins as Enzyme Nanocarrier T2 - Procedia Engineering Y1 - 2016 U6 - http://dx.doi.org/10.1016/j.proeng.2016.11.228 SN - 1877-7058 N1 - Proceedings of the 30th anniversary Eurosensors Conference – Eurosensors 2016, 4-7. Sepember 2016, Budapest, Hungary VL - Vol. 168 SP - 618 EP - 621 ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Xu, Zhanping A1 - Ringbeck, Thorsten A1 - [u.a.], T1 - Charge Transfer Simulation in PMD-Structures T2 - Sensor 99 : proceedings / 9th Int'l Fair and Conference for Sensors, Transducers & Systems, May 18 - 20, 1999, Exhibition Centre Nürnberg/Germany. - Vol. 2 Y1 - 1999 N1 - International Fair and Conference for Sensors, Transducers and Systems <9, 1999, Nürnberg> ; Internationale Messe mit Kongress für Sensoren, Messaufnehmer und Systeme <9, 1999, Nürnberg> SP - 427 EP - 432 PB - AMA Service GmbH CY - Wunsdorf ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten A1 - [u.a.], T1 - A new approach in optical broadband communication systems : a high integrated optical phase locked loop based on a mixing and correlating sensor, the Photonic Mixer Device (PMD) T2 - Proceedings / OPTO 98, Internationaler Kongress und Fachausstellung für Optische Sensorik, Messtechnik und Elektronik, 18. - 20. Mai 1998, Kongresszentrum Erfurt Y1 - 1998 N1 - Internationaler Kongress und Fachausstellung für Optische Sensorik, Messtechnik & Elektronik <3, 1998, Erfurt> ; International Congress and Exhibition on Optoelectronics, Optical Sensors and Measuring Techniques <3, 1998, Erfurt> ; OPTO <3, 1998, Erfurt> SP - 59 EP - 64 PB - ACS Organisations GmbH CY - Wunsdorf ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten A1 - [u.a.], ED - Korevaar, Eric John T1 - Wireless LAN based on optical CDMA using a new high-speed correlation receiver (MSM-PMD) T2 - Optical wireless communications IV : 21-22 August, 2001, Denver, USA. - (SPIE proceedings series ; 4530) Y1 - 2001 SN - 0-8194-4254-2 N1 - Optical Wireless Communications Conference <4, 2001, Denver, Colo.> SP - 168 EP - 178 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten A1 - [u.a.], ED - Schreiber, Ulrich T1 - MSM-PMD as correlation receiver in a new 3D-ranging system T2 - Laser radar ranging and atmospheric lidar techniques III : 17 - 18 September 2001, Toulouse, France. - (SPIE proceedings series ; 4546) Y1 - 2002 SN - 0-8194-4271-2 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X N1 - Laser Radar: Ranging and Atmospheric Lidar Techniques <3, 2001, Toulouse> SP - 145 EP - 154 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten ED - Kamerman, Gary W. T1 - Synchronization in spread spectrum laser radar systems based on PMD-DLL T2 - Laser radar technology and applications V : 26 - 28 April 2000, Orlando, USA. - (SPIE proceedings series ; 4035) Y1 - 2000 SN - 0-8194-3661-5 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X N1 - Laser radar technology and applications <5, 2000, Orlando, Fla.> SP - 204 EP - 216 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten ED - Korevaar, Eric John T1 - PMD-PLL: receiver structure for incoherent communication and ranging systems T2 - Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850) Y1 - 1999 SN - 0-8194-3443-4 SN - 0038-7355 SN - 0277-786X N1 - Conference on Optical Wireless Communications <2, 1999, Boston, Mass.> SP - 116 EP - 130 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Hess, Holger A1 - Ringbeck, Thorsten ED - Voges, Edgar T1 - The photonic mixer device : new perspectives in optical wireless communication T2 - International Workshop on Optical MEMS and Integrated Optics : Universität Dortmund, Universitätskolleg Bommerholz, 11. & 12. June 2001 Y1 - 2001 N1 - International Workshop on Optical MEMS and Integrated Optics <2001, Dortmund> SP - (12)1 EP - (12)5 PB - Univ. CY - Dortmund ER - TY - CHAP A1 - Butenweg, Christoph A1 - Thierauf, Georg T1 - Optimum cost design of reinforced concrete structures using parallel computing T2 - Advances in computational mechanics with parallel and distributed processing : research papers presented at The First Euro-Conference on Parallel and Distributed Computing for Computational Mechanics, held at Lochinver, Scotland, between 26 April and 1 May 1997 / ed. by B. H. V. Topping Y1 - 1997 SN - 0-948749-47-4 SP - 197 EP - 202 PB - Saxe-Coburg Publication CY - Edinburgh ER - TY - CHAP A1 - Butenweg, Christoph A1 - Thierauf, Georg T1 - Optimum design of reinforced concrete structures T2 - Advances in computational structural mechanics : this volume contains a selection of papers presented at The First International Conference on Engineering Computational Technology and The Fourth International Conference on Computational Structures Technology, held in Edinburgh from 18-21 August 1998 / edited by B. H. V. Topping Y1 - 1998 SN - 0-948749-57-1 SP - 447 EP - 458 PB - Civil-Comp Press CY - Edinburgh ER - TY - CHAP A1 - Butenweg, Christoph A1 - Rajan, Sreelakshmy T1 - Design and construction techniques of AAC masonry buildings in earthquakes regions T2 - 10 years Xella research in Building Materials : Symposium on the 4th and 5th of September, Potsdam 2014 Y1 - 2014 ER -