TY - CHAP A1 - Schulte, Maximilian A1 - Eggert, Mathias T1 - Predicting hourly bitcoin prices based on long short-term memory neural networks T2 - Proceedings of the International Conference on Wirtschaftsinformatik (WI) 2021 N2 - Bitcoin is a cryptocurrency and is considered a high-risk asset class whose price changes are difficult to predict. Current research focusses on daily price movements with a limited number of predictors. The paper at hand aims at identifying measurable indicators for Bitcoin price movements and the development of a suitable forecasting model for hourly changes. The paper provides three research contributions. First, a set of significant indicators for predicting the Bitcoin price is identified. Second, the results of a trained Long Short-term Memory (LSTM) neural network that predicts price changes on an hourly basis is presented and compared with other algorithms. Third, the results foster discussions of the applicability of neural nets for stock price predictions. In total, 47 input features for a period of over 10 months could be retrieved to train a neural net that predicts the Bitcoin price movements with an error rate of 3.52 %. Y1 - 2021 N1 - 16th International Conference on Wirtschaftsinformatik, March 2021, Essen, Germany ER - TY - CHAP A1 - Schulte, Jonas A1 - Schwager, Christian A1 - Noureldin, Kareem A1 - May, Martin A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Gradient controlled startup procedure of a molten-salt power-to-heat energy storage plant based on dynamic process simulation T2 - SolarPACES: Solar Power & Chemical Energy Systems N2 - The integration of high temperature thermal energy storages into existing conventional power plants can help to reduce the CO2 emissions of those plants and lead to lower capital expenditures for building energy storage systems, due to the use of synergy effects [1]. One possibility to implement that, is a molten salt storage system with a powerful power-to-heat unit. This paper presents two possible control concepts for the startup of the charging system of such a facility. The procedures are implemented in a detailed dynamic process model. The performance and safety regarding the film temperatures at heat transmitting surfaces are investigated in the process simulations. To improve the accuracy in predicting the film temperatures, CFD simulations of the electrical heater are carried out and the results are merged with the dynamic model. The results show that both investigated control concepts are safe regarding the temperature limits. The gradient controlled startup performed better than the temperature-controlled startup. Nevertheless, there are several uncertainties that need to be investigated further. KW - Power plants KW - Energy storage KW - Associated liquids Y1 - 2023 SN - 978-0-7354-4623-6 U6 - https://doi.org/10.1063/5.0148741 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - SolarPACES: SOLAR POWER & CHEMICAL ENERGY SYSTEMS: 27th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27 September–1 October 2021, Online IS - 2815 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Schulte, Jonas A1 - Schwager, Christian A1 - Frantz, Cathy A1 - Schloms, Felix A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Control concept for a molten salt receiver in star design: Development, optimization and testing with cloud passage scenarios T2 - SolarPACES 2022 conference proceedings N2 - A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so. KW - Molten salt receiver KW - Star design KW - Control optimization KW - Cloud passages Y1 - 2023 U6 - https://doi.org/10.52825/solarpaces.v1i.693 SN - 2751-9899 (online) N1 - SolarPACES 2022, 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Schult, Prince Garcia A1 - Losse, Ann-Kathrin A1 - Czarnecki, Christian A1 - Sultanow, Eldar T1 - Proposing a Framework to address the Sustainable Development Goals T2 - EnviroInfo 2023 N2 - Reducing poverty, protecting the planet, and improving life on earth for everyone are the essential goals of the "2030 Agenda for Sustainable Development"committed by the United Nations (UN). Achieving those goals will require technological innovation as well as their implementation in almost all areas of our business and day-to-day life. This paper proposes a high-level framework that collects and structures different uses cases addressing the goals defined by the UN. Hence, it contributes to the discussion by proposing technical innovations that can be used to achieve those goals. As an example, the goal "Climate Actionïs discussed in detail by describing use cases related to tackling biodiversity loss in order to conservate ecosystems. Y1 - 2023 SN - 978-3-88579-736-4 U6 - https://doi.org/10.18420/env2023-022 SN - 1617-5468 N1 - EnviroInfo 2023, 11. - 23. October 2023, Garching, Germany SP - 243 EP - 249 PB - GI - Gesellschaft für Informatik CY - Bonn ER - TY - JOUR A1 - Schult, O. W. B. A1 - Sistemich, K. A1 - Hardt, Arno T1 - Plans for investigations of subthreshold K+ production in p+A collisions / O. W. B. Schult [u.a.] JF - Nuclear Physics A. Vol. 583 Y1 - 1995 SN - 1873-1554 (E-journal); 0375-9474 (Print) SP - 629 EP - 632 ER - TY - CHAP A1 - Schuh, Günther A1 - Gottschalk, Sebastian A1 - Höhne, Tim A1 - Attig, Philipp ED - Mitsuishi, M. T1 - Further Potentials of Smart Logistics T2 - Manufacturing Systems and Technologies for the New Frontier Y1 - 2008 SN - 978-1-84800-267-8 SN - 978-1-84800-266-1 (Printausgabe) U6 - https://doi.org/10.1007/978-1-84800-267-8_18 N1 - The 41St Cirp Conference On Manufacturing Systems, May 26-28, 2008, Tokyo, Japan SP - 93 EP - 96 PB - Springer CY - London ER - TY - CHAP A1 - Schuh, Günther A1 - Gottschalk, Sebastian Friedrich A1 - Narr, Claus A1 - Höhne, Tim ED - Zäh, Michael F. T1 - Adaptive logistics : information management for planning and control of small series assembly T2 - 2nd International Conference on Changeable, Agile, Reconfigurable and Virtual Production (CARV 2007), Toronto, Ontario, Canada, 22-24 July 2007 : Book of Abstracts Y1 - 2007 SN - 978-0-9783187-0-3 SP - 212 EP - 221 ER - TY - JOUR A1 - Schuh, G. A1 - Gottschalk, S. A1 - Höhne, Tim T1 - High Resolution Production Management JF - CIRP Annals Y1 - 2007 U6 - https://doi.org/10.1016/j.cirp.2007.05.105 SN - 0007-8506 VL - 56 IS - 1 SP - 439 EP - 442 ER - TY - JOUR A1 - Schubert, Nicole A1 - Scholl, Ingrid T1 - Comparing GPU-based multi-volume ray casting techniques JF - Computer Science - Research and Development Y1 - 2011 SN - 1865-2042 VL - 26 IS - 12 SP - 39 EP - 50 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schubert, J. A1 - Schöning, Michael Josef A1 - Schmidt, C. A1 - Siegert, M. A1 - Mesters, S. A1 - Zander, W. A1 - Kordos, P. A1 - Lüth, H. A1 - Legin, A. A1 - Mourzina, Y. G. A1 - Seleznev, B. A1 - Vlasov, Y. G. T1 - Chalcogenide-based thin film sensors prepared by pulsed laser deposition technique JF - Applied Physics A. 69, (1999), H. Supplement 1 Y1 - 1999 SN - 0947-8396 U6 - https://doi.org/10.1007/s003390051534 SP - 803 EP - 805 ER - TY - JOUR A1 - Schubert, J. A1 - Schöning, Michael Josef A1 - Mourzina, Y. G. A1 - Legin, A. V. A1 - Vlasov, Y. G. A1 - Zander, W. A1 - Lüth, H. T1 - Multicomponent thin films for electrochemical sensor applications prepared by pulsed laser deposition JF - Sensors and Actuators B. 76 (2001), H. 1-3 Y1 - 2001 SN - 0925-4005 SP - 327 EP - 330 ER - TY - JOUR A1 - Schuba, Marko A1 - Wrona, Konrad A1 - Zavagli, Guido T1 - Mobile Payments - State of the Art and Open Problems / Wrona, Konrad ; Schuba, Marko ; Zavagli, Guido JF - Electronic commerce : second international workshop ; proceedings / WELCOM 2001, Heidelberg, Germany, November 16-17, 2001. Ludger Fiege ... (ed.) Y1 - 2001 SN - 978-3-540-42878-7 N1 - Lecture Notes in Computer Science ; 2232 SP - 88 EP - 100 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schuba, Marko A1 - Wrona, Konrad T1 - Electronic Commerce Transactions in a Wireless Environment / Schuba, Marko. ; Wrona, Konrad Y1 - 1999 N1 - IWTEC ´99 SP - 1 EP - 9 ER - TY - JOUR A1 - Schuba, Marko A1 - Wrona, Konrad T1 - Mobile Chip Electronic Commerce: Enabling Credit Card Payment for Mobile Devices / Schuba, Marko ; Wrona, Konrad Y1 - 2000 N1 - eBiz2000 Specialist Conference @ CommunicAsia2000, Singapore, June 2000 SP - 1 EP - 6 ER - TY - JOUR A1 - Schuba, Marko A1 - Wrona, Konrad T1 - Security for Mobile Commerce Applications / Schuba, Marko ; Wrona, Konrad Y1 - 2001 N1 - Multimedia, Internet, Video Technologies 2001 (MIV 2001), Malta, September 1-6, 2001 ; WSEAS Conference ; World Scientific and Engineering Academy and Society SP - 1 EP - 8 ER - TY - JOUR A1 - Schuba, Marko A1 - Spaniol, Otto T1 - Interconnection of Local Area Networks via ATM / Spaniol, Otto ; Schuba, Marko JF - High performance networks for multimedia applications / edited by André Danthine ... Y1 - 1999 SN - 0-7923-8274-9 SP - 1 EP - 10 PB - Kluwer Academic Publ. CY - Dordrecht ER - TY - JOUR A1 - Schuba, Marko A1 - Schneider, Gaby A1 - Haverkort, Boudewijn R. T1 - QNA-MC: A Performance Evaluation Tool for Communication Networks with Multicast Data Streams / Schneider, G. ; Schuba, M. ; Haverkort, B. R. JF - Computer Performance Evaluation - Modelling Techniques and Tools / Puigjaner, Ramon (eds.) Y1 - 1998 SN - 3-540-64949-2 N1 - Lecture notes in computer science ; 1469 SP - 105 EP - 116 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schuba, Marko A1 - Reichl, Peter A1 - Kesdogan, Dogan A1 - Junghärtchen, Klaus T1 - Simulative Performance Evaluation of the Temporary Pseudonym Method for Protecting Location Information in GSM Networks / Reichl, P. ; Kesdogan, D. ; Junghärtchen, K. ; Schuba, M. JF - Computer Performance Evaluation - Modelling Techniques and Tools / Puigjaner, Ramon (eds.) Y1 - 1998 SN - 3-540-64949-2 N1 - Lecture notes in computer science ; 1469 SP - 105 EP - 116 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schuba, Marko A1 - Reichl, Peter A1 - Hoff, Simon T1 - How to Model Complex Periodic Traffic with TES / Reichl, Peter ; Schuba, Marko ; Hoff, Simon JF - Proc. of 13th United Kingdom Workshop on Performance Engineering, Edinburgh, UK, July 1997 Y1 - 1997 SP - 17/1 EP - 17/11 ER - TY - JOUR A1 - Schuba, Marko A1 - Reichl, Peter T1 - How to Place Connectionless Servers in ATM Networks / Schuba, Marko ; Reichl, Peter JF - Proc. of Fourth IFIP Workshop on Performance Modelling and Evaluation of ATM Networks Y1 - 1996 N1 - Fourth IFIP Workshop on Performance Modelling and Evaluation of ATM Networks, Ilkley, West Yorkshire, U.K., July 1996 SP - 09/1 EP - 09/10 ER -