TY  - CHAP
A1  - Leise, Philipp
A1  - Altherr, Lena
A1  - Pelz, Peter F.
T1  - Energy-Efficient design of a water supply system for skyscrapers by mixed-integer nonlinear programming
T2  - Operations Research Proceedings 2017
N2  - The energy-efficiency of technical systems can be improved by a systematic design approach. Technical Operations Research (TOR) employs methods known from Operations Research to find a global optimal layout and operation strategy of technical systems. We show the practical usage of this approach by the systematic design of a decentralized water supply system for skyscrapers. All possible network options and operation strategies are modeled by a Mixed-Integer Nonlinear Program. We present the optimal system found by our approach and highlight the energy savings compared to a conventional system design.
KW  - Engineering optimization
KW  - Global optimization
KW  - Energy efficiency
KW  - Water
KW  - Network
Y1  - 2018
SN  - 978-3-319-89919-0
U6  - http://dx.doi.org/10.1007/978-3-319-89920-6_63
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Wiegner, Jonas
A1  - Volker, Hanno
A1  - Mainz, Fabian
A1  - Backes, Andreas
A1  - Loeken, Michael
A1  - Hüning, Felix
T1  - Energy analysis of a wireless sensor node powered by a Wiegand sensor
JF  - Journal of Sensors and Sensor Systems (JSSS)
N2  - This article describes an Internet of things (IoT) sensing device with a wireless interface which is powered by the energy-harvesting method of the Wiegand effect. The Wiegand effect, in contrast to continuous sources like photovoltaic or thermal harvesters, provides small amounts of energy discontinuously in pulsed mode. To enable an energy-self-sufficient operation of the sensing device with this pulsed energy source, the output energy of the Wiegand generator is maximized. This energy is used to power up the system and to acquire and process data like position, temperature or other resistively measurable quantities as well as transmit these data via an ultra-low-power ultra-wideband (UWB) data transmitter. A proof-of-concept system was built to prove the feasibility of the approach. The energy consumption of the system during start-up was analysed, traced back in detail to the individual components, compared to the generated energy and processed to identify further optimization options. Based on the proof of concept, an application prototype was developed.
Y1  - 2023
U6  - http://dx.doi.org/10.5194/jsss-12-85-2023
SN  - 2194-878X
N1  - Corresponding author: Felix Hüning
VL  - 12
IS  - 1
SP  - 85
EP  - 92
PB  - Copernicus Publ.
CY  - Göttingen
ER  - 
TY  - BOOK
A1  - Wosnitza, Franz
A1  - Hilgers, Hans Gerd
T1  - Energieeffizienz und Energiemanagement : ein Überblick heutiger Möglichkeiten und Notwendigkeiten
Y1  - 2012
SN  - 978-3-8348-1941-3
N1  - eISBN 978-3-8348-8671-2
PB  - Springer Spektrum
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Schmitz, Manfred
A1  - Dietze, Christian
A1  - Czarnecki, Christian
ED  - Urbach, Nils
ED  - Röglinger, Maximilian
T1  - Enabling digital transformation through robotic process automation at Deutsche Telekom
T2  - Enabling digital transformation through robotic process automation at Deutsche Telekom
N2  - Due to the high number of customer contacts, fault clearances, installations, and product provisioning per year, the automation level of operational processes has a significant impact on financial results, quality, and customer experience. Therefore, the telecommunications operator Deutsche Telekom (DT) has defined a digital strategy with the objectives of zero complexity and zero complaint, one touch, agility in service, and disruptive thinking. In this context, Robotic Process Automation (RPA) was identified as an enabling technology to formulate and realize DT’s digital strategy through automation of rule-based, routine, and predictable tasks in combination with structured and stable data.
Y1  - 2019
SN  - 978-3-319-95272-7
U6  - http://dx.doi.org/10.1007/978-3-319-95273-4_2
SP  - 15
EP  - 33
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Czarnecki, Christian
A1  - Hong, Chin-Gi
A1  - Schmitz, Manfred
A1  - Dietze, Christian
ED  - Urbach, Nils
ED  - Röglinger, Maximilian
ED  - Kautz, Karlheinz
ED  - Alias, Rose Alinda
ED  - Saunders, Carol
ED  - Wiener, Martin
T1  - Enabling digital transformation through cognitive robotic process automation at Deutsche Telekom Services Europe
T2  - Digitalization Cases Vol. 2 :  Mastering digital transformation for global business
N2  - Subject of this case is Deutsche Telekom Services Europe (DTSE), a service center for administrative processes. Due to the high volume of repetitive tasks (e.g., 100k manual uploads of offer documents into SAP per year), automation was identified as an important strategic target with a high management attention and commitment. DTSE has to work with various backend application systems without any possibility to change those systems. Furthermore, the complexity of administrative processes differed. When it comes to the transfer of unstructured data (e.g., offer documents) to structured data (e.g., MS Excel files), further cognitive technologies were needed.
Y1  - 2021
SN  - 978-3-030-80002-4 (Print)
SN  - 978-3-030-80003-1 (Online)
U6  - http://dx.doi.org/10.1007/978-3-030-80003-1
SP  - 123
EP  - 138
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Wolf, Martin
A1  - Foltz, Christian
A1  - Schlick, Christopher
A1  - Luczak, Holger
T1  - Empirical Investigation of a workspace model for Chemical engineers / Wolf, Martin ; Foltz, Christian ; Schlick, Christopher ; Luczak, Holger
JF  - Proceedings of the Human Factors and Ergonomics Society Annual Meeting July 2000. 44 (2000), H. 6
Y1  - 2000
N1  - Proceedings of the IEA 2000/HFES 2000 Congress
SP  - 612
EP  - 615
PB  - -
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Schiffer, Stefan
A1  - Lakemeyer, Gerhard
T1  - Embedding fuzzy controllers in golog  / Ferrein, Alexander ; Schiffer, Stefan ; Lakemeyer, Gerhard
JF  - IEEE International Conference on Fuzzy Systems, 2009. FUZZ-IEEE 2009
Y1  - 2009
SN  - 978-1-4244-3596-8
SP  - 894
EP  - 899
PB  - IEEE
CY  - New York
ER  - 
TY  - BOOK
A1  - Hüning, Felix
T1  - Embedded Design For IoT With Renesas Synergy
Y1  - 2018
N1  - gedruckt in der Bereichsbibliothek Eupener Str. vorhanden; 
Document No. R01PF0164ED0100
PB  - Renesas Electronics
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Jens, Otto
A1  - Kaldenhoff, E.
A1  - Kirschner-Hermanns, R.
A1  - Mühl, Thomas
A1  - Klinge, Uwe
T1  - Elongation of textile pelvic floor implants under load is related to complete loss of effective porosity, thereby favoring incorporation in scar plates
JF  - Journal of biomedical materials research. Part A
N2  - Use of textile structures for reinforcement of pelvic floor structures has to consider mechanical forces to the implant, which are quite different to the tension free conditions of the abdominal wall. Thus, biomechanical analysis of textile devices has to include the impact of strain on stretchability and effective porosity. Prolift® and Prolift + M®, developed for tension free conditions, were tested by measuring stretchability and effective porosity applying mechanical strain. For comparison, we used Dynamesh-PR4®, which was designed for pelvic floor repair to withstand mechanical strain. Prolift® at rest showed moderate porosity with little stretchability but complete loss of effective porosity at strain of 4.9 N/cm. Prolift + M® revealed an increased porosity at rest, but at strain showed high stretchability, with subsequent loss of effective porosity at strain of 2.5 N/cm. Dynamesh PR4® preserved its high porosity even under strain, but as consequence of limited stretchability. Though in tension free conditions Prolift® and Prolift + M® can be considered as large pore class I meshes, application of mechanical strain rapidly lead to collapse of pores. The loss of porosity at mechanical stress can be prevented by constructions with high structural stability. Assessment of porosity under strain was found helpful to define requirements for pelvic floor devices. Clinical studies have to prove whether devices with high porosity as well as high structural stability can improve the patients' outcome.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/jbm.a.34767
SN  - 1552-4965
VL  - 102
IS  - 4
SP  - 1079
EP  - 1084
PB  - Wiley
CY  - New York
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  -