TY  - JOUR
A1  - Schreiber, Marc
A1  - Barkschat, Kai
A1  - Kraft, Bodo
A1  - Zündorf, Albert
T1  - Quick Pad Tagger : An Efficient Graphical User Interface for Building Annotated Corpora with Multiple Annotation Layers
JF  - Computer Science & Information Technology (CS & IT)
Y1  - 2015
SN  - 978-1-921987-32-8
U6  - http://dx.doi.org/10.5121/csit.2015.50413
SN  - 2231 - 5403
VL  - 5
IS  - 4
SP  - 131
EP  - 143
PB  - Academy & Industry Research Collaboration Center (AIRCC)
ER  - 
TY  - CHAP
A1  - Schreiber, Marc
A1  - Barkschat, Kai
A1  - Kraft, Bodo
T1  - Using Continuous Integration to organize and monitor the annotation process of domain specific corpora
T2  - 5th International Conference on Information and Communication Systems (ICICS) : 1-3 April 2014, Irbid, Jordanien
Y1  - 2014
SN  - 978-1-4799-3022-7
U6  - http://dx.doi.org/10.1109/IACS.2014.6841958
SP  - 1
EP  - 6
ER  - 
TY  - CHAP
A1  - Schoutetens, Frederic
A1  - Dachwald, Bernd
A1  - Heiligers, Jeannette
T1  - Optimisation of photon-sail trajectories in the alpha-centauri system using evolutionary neurocontrol
T2  - 8th ICATT (International Conference on Astrodynamics Tools and Techniques) 23 - 25 June 2021, Virtual
N2  - With the increased interest for interstellar exploration after the discovery of exoplanets and the proposal by Breakthrough Starshot, this paper investigates the optimisation of photon-sail trajectories in Alpha Centauri. The prime objective is to find the optimal steering strategy for a photonic sail to get captured around one of the stars after a minimum-time transfer from Earth. By extending the idea of the Breakthrough Starshot project with a deceleration phase upon arrival, the mission’s scientific yield will be increased. As a secondary objective, transfer trajectories between the stars and orbit-raising manoeuvres to explore the habitable zones of the stars are investigated. All trajectories are optimised for minimum time of flight using the trajectory optimisation software InTrance. Depending on the sail technology, interstellar travel times of 77.6-18,790 years can be achieved, which presents an average improvement of 30% with respect to previous work. Still, significant technological development is required to reach and be captured in the Alpha-Centauri system in less than a century. Therefore, a fly-through mission arguably remains the only option for a first exploratory mission to Alpha Centauri, but the enticing results obtained in this work provide perspective for future long-residence missions to our closest neighbouring star system.
Y1  - 2021
N1  - 8th ICATT (International Conference on Astrodynamics Tools and Techniques)
23 - 25 June 2021, Virtual
SP  - 1
EP  - 15
ER  - 
TY  - JOUR
A1  - Schopp, Christoph
A1  - Rohrbach, Felix
A1  - Langer, Luc
A1  - Heuermann, Holger
T1  - Detection of welding wire length by active S11 measurement
JF  - IEEE Transactions on Plasma Science
N2  - A novel method to determine the extruded length of a metallic wire for a directed energy deposition (DED) process using a microwave (MW) plasma jet with a straight-through wire feed is presented. The method is based on the relative comparison of the measured frequency response obtained by the large-signal scattering parameter (Hot-S) technique. In the practical working range, repeatability of less than 6% for a nonactive plasma and 9% for the active plasma state is found. Measurements are conducted with a focus on a simple solution to decrease the processing time and reduce the integration time of the process into the existing hardware. It is shown that monitoring a single frequency for magnitude and phase changes is sufficient to achieve good accuracy. A combination of different measurement values to determine the length is possible. The applicability to different diameter of the same material is shown as well as a contact detection of the wire and metallic substrate.
KW  - Circuit simulation
KW  - Hot S-parameter
KW  - Modeling
KW  - Plasma
KW  - Plasma diagnostics
Y1  - 2024
U6  - http://dx.doi.org/10.1109/TPS.2024.3356659
SN  - 0093-3813 (Print)
SN  - 1939-9375 (Online)
IS  - Early Access
SP  - 1
EP  - 6
PB  - IEEE
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Nachtrodt, Frederik
A1  - Heuermann, Holger
A1  - Scherer, Ulrich W.
A1  - Mostacci, Domiziano
A1  - Finger, Torsten
A1  - Tietsch, Wolfgang
T1  - A novel 2.45 GHz/200 W Microwave Plasma Jet for High Temperature Applications above 3600 K
T2  - Journal of Physics : Conference Series
Y1  - 2012
SN  - 1742-6596
VL  - 406
IS  - 012029
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
A1  - Marso, Michel
T1  - Multiphysical Study of an Atmospheric Microwave Argon Plasma Jet
T2  - IEEE Transactions on Plasma Science
Y1  - 2017
U6  - http://dx.doi.org/10.1109/TPS.2017.2692735
SN  - 1939-9375
VL  - 45
IS  - 6
SP  - 932
EP  - 937
PB  - IEEE
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
A1  - Holtrup, S.
T1  - Investigation on efficacy optimization of RF-driven automotive D-lamps
T2  - 44th European Microwave Conference (EuMC),2014, Rome
Y1  - 2014
U6  - http://dx.doi.org/10.1109/EuMC.2014.6986645
SP  - 1154
EP  - 1157
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
T1  - Electrodeless low pressure lamp with bi-static matching at 2.45 GHz
T2  - 2013 European Microwave Conference (EuMC) , Nuremberg
Y1  - 2013
SN  - 978-1-4799-0264-4
SP  - 881
EP  - 884
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Schopp, Christoph
A1  - Doll, Timo
A1  - Gräser, Ulrich
A1  - Harzheim, Thomas
A1  - Heuermann, Holger
A1  - Kling, Rainer
A1  - Marso, Michael
T1  - Capacitively Coupled High-Pressure Lamp Using Coaxial Line Networks
JF  - IEEE Transactions on Microwave Theory and Techniques
N2  - This paper describes the development of a capacitively coupled high-pressure lamp with input power between 20 and 43 W at 2.45 GHz, using a coaxial line network. Compared with other electrodeless lamp systems, no cavity has to be used and a reduction in the input power is achieved. Therefore, this lamp is an alternative to the halogen incandescent lamp for domestic lighting. To serve the demands of domestic lighting, the filling of the lamp is optimized over all other resulting requirements, such as high efficacy at low induced powers and fast startups. A workflow to develop RF-driven plasma applications is presented, which makes use of the hot S-parameter technique. Descriptions of the fitting process inside a circuit and FEM simulator are given. Results of the combined ignition and operation network from simulations and measurements are compared. An initial prototype is built and measurements of the lamp's lighting properties are presented along with an investigation of the efficacy optimizations using large signal amplitude modulation. With this lamp, an efficacy of 135 lmW -1 is achieved.
Y1  - 2016
U6  - http://dx.doi.org/10.1109/TMTT.2016.2600326
SN  - 0018-9480
VL  - 64
IS  - 10
SP  - 3363
EP  - 3368
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Schopp, Christoph
A1  - Britun, Nikolay
A1  - Vorac, Jan
A1  - Synek, Petr
A1  - Snyders, Rony
A1  - Heuermann, Holger
T1  - Thermal and Optical Study on the Frequency Dependence of an Atmospheric Microwave Argon Plasma Jet
JF  - IEEE Transactions on Plasma Science
Y1  - 2019
SN  - 1939-9375
VL  - 47
IS  - 7
SP  - 3176
EP  - 3181
PB  - IEEE
CY  - New York
ER  - 
TY  - CHAP
A1  - Schopen, Oliver
A1  - Shabani, Bahman
A1  - Esch, Thomas
A1  - Kemper, Hans
A1  - Shah, Neel
ED  - Rahim, S.A.
ED  - As'arry, A.
ED  - Zuhri, M.Y.M.
ED  - Harmin, M.Y.
ED  - Rezali, K.A.M.
ED  - Hairuddin, A.A.
T1  - Quantitative evaluation of health management designs for fuel cell systems in transport vehicles
T2  - 2nd UNITED-SAIG International Conference Proceedings
N2  - Focusing on transport vehicles, mainly with regard to aviation applications, this paper presents compilation and subsequent quantitative evaluation of methods aimed at building an optimum integrated health management solution for fuel cell systems. The methods are divided into two different main types and compiled in a related scheme. Furthermore, different methods are analysed and evaluated based on parameters specific to the aviation context of this study. Finally, the most suitable method for use in fuel cell health management systems is identified and its performance and suitability is quantified.
KW  - aviation application
KW  - health management systems
KW  - fuel cell systems
Y1  - 2022
N1  - 2nd UNITED-SAIG International Conference, 23-24 May 2022, Putrajaya, Malaysia
SP  - 1
EP  - 3
ER  - 
TY  - CHAP
A1  - Schopen, Oliver
A1  - Kemper, Hans
A1  - Esch, Thomas
T1  - Development of a comparison methodology and evaluation matrix for electrically driven compressors in ICE and FC
T2  - Proceedings of the 1st UNITED – Southeast Asia Automotive Interest Group (SAIG) International Conference
N2  - In addition to electromobility and alternative drive systems, a focus is set on electrically driven compressors (EDC), with a high potential for increasing the efficiency of internal combustion engines (ICE) and fuel cells [01]. The primary objective is to increase the ICE torque, provided independently of the ICE speed by compressing the intake air and consequently the ICE filling level supported by the compressor. For operation independent from the ICE speed, the EDC compressor is decoupled from the turbine by using an electric compressor motor (CM) instead of the turbine. ICE performances can be increased by the use of EDC where individual compressor parameters are adapted to the respective application area [02] [03]. This task contains great challenges, increased by demands with regard to pollutant reduction while maintaining constant performance and reduced fuel consumption. The FH-Aachen is equipped with an EDC test bench which enables EDC-investigations in various configurations and operating modes. Characteristic properties of different compressors can be determined, which build the basis for a comparison methodology. Subject of this project is the development of a comparison methodology for EDC with an associated evaluation method and a defined overall evaluation method. For the application of this comparison methodology, corresponding series of measurements are carried out on the EDC test bench using an appropriate test device.
KW  - electro mobility
KW  - fuel cell
KW  - internal combustion engine
KW  - electrically driven compressors
Y1  - 2021
SN  - 978-3-902103-94-9
N1  - 1st UNITED-SAIG International Conference, 21-22 APR 2021, Chulalongkorn University, Thailand
SP  - 45
EP  - 46
PB  - FH Joanneum
CY  - Graz
ER  - 
TY  - JOUR
A1  - Scholz, Christina
A1  - Romagnoli, Daniele
A1  - Dachwald, Bernd
A1  - Theil, Stephan
T1  - Performance analysis of an attitude control system for solar sails using sliding masses
JF  - Advances in Space Research
Y1  - 2011
SN  - 0273-1177
VL  - 48
IS  - 11
SP  - 1822
EP  - 1835
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Scholz, A.
A1  - Ley, Wilfried
A1  - Dachwald, Bernd
A1  - Miau, J. J.
A1  - Juang, J. C.
T1  - Flight results of the COMPASS-1 picosatellite mission
JF  - Acta Astronautica. 67 (2010), H. 9-10
Y1  - 2010
SN  - 0094-5765
SP  - 1289
EP  - 1298
ER  - 
TY  - CHAP
A1  - Scholl, Ingrid
A1  - Suder, Sebastian
A1  - Schiffer, Stefan
T1  - Direct Volume Rendering in Virtual Reality
T2  - Bildverarbeitung für die Medizin 2018
Y1  - 2018
SN  - 978-3-662-56537-7
U6  - http://dx.doi.org/10.1007/978-3-662-56537-7_79
SP  - 297
EP  - 302
PB  - Springer Vieweg
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Scholl, Ingrid
A1  - Pelikan, Erich
A1  - Repges, Rudolf
A1  - Tolxdorff, Thomas
T1  - Texture-based feature extraction using the Wavelet transform on x rays.
JF  - Medical Imaging 1996: Image Processing
Y1  - 1996
N1  - Proceedings of SPIE 2710
SP  - 668
EP  - 678
ER  - 
TY  - JOUR
A1  - Scholl, Ingrid
A1  - Palm, Christoph
A1  - Lehmann, Thomas
A1  - Spitzer, Klaus
T1  - Quantitative Farbmessung in laryngoskopischen Bildern. Palm, C; Scholl, I; Lehmann, TM; Spitzer, K.
JF  - Bildverarbeitung für die Medizin 1998. Hrsg.: Thomas Lehmann ...
Y1  - 1998
SN  - 3-540-63885-7
SP  - 412
EP  - 416
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Scholl, Ingrid
A1  - Bartella, Alex
A1  - Moluluo, Cem
A1  - Ertural, Berat
A1  - Laing, Frederic
A1  - Suder, Sebastian
T1  - MedicVR : Acceleration and Enhancement Techniques for Direct Volume Rendering in Virtual Reality
T2  - Bildverarbeitung für die Medizin 2019 : Algorithmen – Systeme – Anwendungen
Y1  - 2019
SN  - 978-3-658-25326-4
U6  - http://dx.doi.org/10.1007/978-3-658-25326-4_32
SP  - 152
EP  - 157
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Scholl, Ingrid
A1  - Aach, Til
A1  - Deserno, Thomas M.
A1  - Kuhlen, Torsten
T1  - Challenges of medical image processing
JF  - Computer Science - Research and Development
Y1  - 2011
SN  - 1865-2042
VL  - 26
IS  - 1-2
SP  - 5
EP  - 13
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Scholl, Fabio
A1  - Morais, Paulo
A1  - Gabriel, Rayla
A1  - Schöning, Michael Josef
A1  - Siqueira, Jose Roberto, Jr.
A1  - Caseli, Luciano
T1  - Carbon nanotubes arranged as smart interfaces in lipid Langmuir-Blodgett films enhancing the enzymatic properties of penicillinase for biosensing applications
JF  - Applied Materials & Interfaces
N2  - In this paper, carbon nanotubes (CNTs) were incorporated in penicillinase-phospholipid Langmuir and Langmuir–Blodgett (LB) films to enhance the enzyme catalytic properties. Adsorption of the penicillinase and CNTs at dimyristoylphosphatidic acid (DMPA) monolayers at the air–water interface was investigated by surface pressure–area isotherms, vibrational spectroscopy, and Brewster angle microscopy. The floating monolayers were transferred to solid supports through the LB technique, forming mixed DMPA-CNTs-PEN films, which were investigated by quartz crystal microbalance, vibrational spectroscopy, and atomic force microscopy. Enzyme activity was studied with UV–vis spectroscopy and the feasibility of the supramolecular device nanostructured as ultrathin films were essayed in a capacitive electrolyte–insulator–semiconductor (EIS) sensor device. The presence of CNTs in the enzyme–lipid LB film not only tuned the catalytic activity of penicillinase but also helped conserve its enzyme activity after weeks, showing increased values of activity. Viability as penicillin sensor was demonstrated with capacitance/voltage and constant capacitance measurements, exhibiting regular and distinctive output signals over all concentrations used in this work. These results may be related not only to the nanostructured system provided by the film, but also to the synergism between the compounds on the active layer, leading to a surface morphology that allowed a fast analyte diffusion because of an adequate molecular accommodation, which also preserved the penicillinase activity. This work therefore demonstrates the feasibility of employing LB films composed of lipids, CNTs, and enzymes as EIS devices for biosensing applications.
Y1  - 2017
U6  - http://dx.doi.org/10.1021/acsami.7b08095
SN  - 1944-8252
VL  - 9
IS  - 36
SP  - 31054
EP  - 31066
PB  - ACS
CY  - Washington
ER  -