TY  - CHAP
A1  - Schwanke, Peter
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Security Analysis of the ADS Protocol of a Beckhoff CX2020 PLC
N2  - ICSs (Industrial Control Systems) and its subset SCADA systems (Supervisory Control and Data Acquisition) are getting exposed to a constant stream of new threats. The increasing importance of IT security in ICS requires viable methods to assess the security of ICS, its individual components, and its protocols. This paper presents a security analysis with focus on the communication protocols of a single PLC (Programmable Logic Controller). The PLC, a Beckhoff CX2020, is examined and new vulnerabilities of the system are revealed. Based on these findings recommendations are made to improve security of the Beckhoff system and its protocols.
Y1  - 2017
N1  - International Conference on Computer, Network Security and Communication Engineering (CNSCE 2017), March 26-27, 2017, Bangkok, Thailand
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Hagemann, Hans-Jürgen
A1  - Bachmann, Peter K.
A1  - Lade, H.
A1  - Leers, D.
A1  - Wiechert, Detlef U.
A1  - Wilson, H.
A1  - Fournier, D.
A1  - Plamann, Karsten
T1  - Thermal properties of C/H-, C/H/O-, C/H/N- and C/H/X-grown polycrystalline CVD diamond. P. K. Bachmann, H. J. Hagemann, H. Lade,  ...
JF  - Diamond and Related Material. Vol 4. (1995), H. Issue 5-6
Y1  - 1995
SP  - 820
EP  - 826
PB  - Elsevier Science
CY  - New York, NY [u.a.]
ER  - 
TY  - JOUR
A1  - Hagemann, Hans-Jürgen
A1  - Bachmann, Peter K.
A1  - Lade, H.
A1  - Leers, D.
T1  - CVD Diamond Growth: Gas Compositions and Film Properties / P.K. Bachmann, H.J. Hagemann, H. Lade, D. Leers, D.U. Wiechert and H. Wilson
JF  - Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo ...
Y1  - 1994
N1  - NIRIM International Symposium on Advanced Materials ; 1994 (Tsukuba) : 1994.03.13-17
SP  - 115
EP  - 120
PB  - International Communications Specialists
CY  - Tokyo
ER  - 
TY  - JOUR
A1  - Hagemann, Hans-Jürgen
A1  - Bachmann, Peter K.
A1  - Lade, H.
A1  - Leers, D.
T1  - Influence of the gas phase on diamond deposition and diamond properties. Bachmann, P. K.; Hagemann, H.J.; Lade, H.; Leers, D.; Picht, F.; Wiechert, D. U.
JF  - Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo
Y1  - 1994
N1  - NIRIM International Symposium on Advanced Materials ; <1994, Tsukuba>
SP  - 115
EP  - 120
PB  - International Communications Specialists, Inc.
CY  - Tokyo
ER  - 
TY  - CHAP
A1  - Stöbe, Rolf
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
A1  - Breuer, Michael
T1  - Artificial ageing of mobile devices using a simulated GSM/GPRS network
T2  - Eighth International Conference on Availability, Reliability and Security (ARES) : 2-6 Sept. 2013, Regensburg
Y1  - 2013
SP  - 493
EP  - 497
PB  - IEEE
ER  - 
TY  - CHAP
A1  - Reke, Michael
A1  - Peter, Daniel
A1  - Schulte-Tigges, Joschua
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Walter, Thomas
A1  - Matheis, Dominik
T1  - A Self-Driving Car Architecture in ROS2
T2  - 2020 International SAUPEC/RobMech/PRASA Conference, Cape Town, South Africa
N2  - In this paper we report on an architecture for a self-driving car that is based on ROS2. Self-driving cars have to take decisions based on their sensory input in real-time, providing high reliability with a strong demand in functional safety. In principle, self-driving cars are robots. However, typical robot software, in general, and the previous version of the Robot Operating System (ROS), in particular, does not always meet these requirements. With the successor ROS2 the situation has changed and it might be considered as a solution for automated and autonomous driving. Existing robotic software based on ROS was not ready for safety critical applications like self-driving cars. We propose an architecture for using ROS2 for a self-driving car that enables safe and reliable real-time behaviour, but keeping the advantages of ROS such as a distributed architecture and standardised message types. First experiments with an automated real passenger car at lower and higher speed-levels show that our approach seems feasible for autonomous driving under the necessary real-time conditions.
Y1  - 2020
SN  - 978-1-7281-4162-6
U6  - https://doi.org/10.1109/SAUPEC/RobMech/PRASA48453.2020.9041020
N1  - 2020 International SAUPEC/RobMech/PRASA Conference, 29-31 Jan. 2020, Cape Town, South Africa
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - Robot controllers for highly dynamic environments with real-time constraints
JF  - Künstliche Intelligenz : KI
N2  - In this extended abstract we describe the robot programming and planning language READYLOG, a GOLOG dialect which was developed to support the decision making of robots acting in dynamic real-time domains like robotic soccer. The formal framework of READYLOG, which is based on the situation calculus, features imperative control structures like loops and procedures, allows for decision-theoretic planning, and accounts for a continuously changing world. We developed high-level controllers in READYLOG for our soccer robots in RoboCup’s Middle-size league, but also for service robots and for autonomous agents in interactive computer games.
Y1  - 2010
U6  - https://doi.org/10.1007/s13218-010-0041-3
SN  - 1610-1987
VL  - 24
IS  - 2
SP  - 175
EP  - 178
PB  - Springer
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - golog.lua: Towards a Non-Prolog Implementation of Golog for Embedded Systems
Y1  - 2010
SP  - 20
EP  - 28
PB  - AAAI
CY  - Menlo Park
ER  - 
TY  - CHAP
A1  - Schnell, Michael
A1  - Brandes, Sinja
A1  - Gligorevic, Snjezana
A1  - Walter, Michael
A1  - Rihacek, Christoph
A1  - Sajatovic, Miodrag
A1  - Haindl, Bernhard
T1  - Interference mitigation for broadband L-DACS
T2  - 27th IEEE/AIAA Digital Avionics Systems Conference : DASC 2008 : 26-30 Oct. 2008, St. Paul, Minn.
Y1  - 2008
SN  - 978-1-4244-2207-4 ; 978-1-4244-2208-1
SP  - 2B2-1
EP  - 2B2-12
ER  - 
TY  - CHAP
A1  - Lindenlauf, Simon
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Cold Boot Attacks on DDR2 and DDR3 SDRAM
T2  - 10th International Conference on Availability, Reliability and Security (ARES) 2015
Y1  - 2015
U6  - https://doi.org/10.1109/ARES.2015.28
SP  - 287
EP  - 292
ER  - 
TY  - CHAP
A1  - Bonney, Gregor
A1  - Höfken, Hans-Wilhelm
A1  - Paffen, Benedikt
A1  - Schuba, Marko
T1  - ICS/SCADA Security - Analysis of a Beckhoff CX5020 PLC
T2  - 1st International Conference on Information Systems Security and Privacy : ICISSP 2015
Y1  - 2015
SP  - 1
EP  - 6
ER  - 
TY  - CHAP
A1  - Granat, Andreas
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Intrusion Detection of the ICS Protocol EtherCAT
N2  - Control mechanisms like Industrial Controls Systems (ICS) and its subgroup SCADA (Supervisory Control and Data Acquisition) are a prerequisite to automate industrial processes. While protection of ICS on process management level is relatively straightforward – well known office IT security mechanisms can be used – protection on field bus level is harder to achieve as there are real-time and production requirements like 24x7 to consider. One option to improve security on field bus level is to introduce controls that help to detect and to react on attacks. This paper introduces an initial set of intrusion detection mechanisms for the field bus protocol EtherCAT. To this end existing Ethernet attack vectors including packet injection and man-in-the-middle attacks are tested in an EtherCAT environment, where they could interrupt the EtherCAT network and may even cause physical damage. Based on the signatures of such attacks, a preprocessor and new rule options are defined for the open source intrusion detection system Snort demonstrating the general feasibility of intrusion detection on field bus level.
Y1  - 2017
N1  - International Conference on Computer, Network Security and Communication Engineering (CNSCE 2017), March 26-27, 2017, Bangkok, Thailand
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Hagemann, Hans-Jürgen
A1  - Bachmann, Peter K.
A1  - Lade, H.
A1  - Leers, D.
T1  - Diamond chemical vapor deposition: gas compositions and film properties / Bachmann, P.K.; Hagemann, H.-J.; Lade, H; Leers, D.; Picht, F.; Wiechert, D.U.; Wilson, H.
JF  - Diamond, SiC and nitride wide bandgap semiconductors : symposium held April 4 - 8, 1994, San Francisco, California, U.S.A. / ed.: Calvin H. Carter, Jr. ...
Y1  - 1994
SN  - 1-55899-239-1
N1  - Materials Research Society symposium proceedings ; 339
SP  - 267
EP  - 277
CY  - Pittsburgh, Penn.
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Jost, T.
A1  - Walter, Michael
T1  - Scatterer based airport surface channel model
T2  - IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla.
Y1  - 2009
SN  - 978-1-4244-4078-8
SP  - 4C2-1
EP  - 4C2-10
ER  - 
TY  - CHAP
A1  - Logen, Steffen
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Simplifying RAM Forensics : A GUI and Extensions for the Volatility Framework
T2  - 2012 Seventh International Conference on Availability, Reliability and Security (ARES), 20-24 August 2012, Prague, Czech Republic
N2  - The Volatility Framework is a collection of tools for the analysis of computer RAM. The framework offers a multitude of analysis options and is used by many investigators worldwide. Volatility currently comes with a command line interface only, which might be a hinderer for some investigators to use the tool. In this paper we present a GUI and extensions for the Volatility Framework, which on the one hand simplify the usage of the tool and on the other hand offer additional functionality like storage of results in a database, shortcuts for long Volatility Framework command sequences, and entirely new commands based on correlation of data stored in the database.
Y1  - 2012
SN  - 978-1-4673-2244-7
U6  - https://doi.org/10.1109/ARES.2012.12
SP  - 620
EP  - 624
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Siebel, Nils T.
A1  - Steinbauer, Gerald
T1  - Hybrid control for autonomous systems — Integrating learning, deliberation and reactive control
JF  - Robotics and Autonomous Systems
Y1  - 2010
U6  - https://doi.org/10.1016/j.robot.2010.06.003
SN  - 0921-8890
VL  - 58
IS  - 9
SP  - 1037
EP  - 1038
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Vladova, Gergana
A1  - Ullrich, André
A1  - Sultanow, Eldar
A1  - Tobolla, Marinho
A1  - Sebrak, Sebastian
A1  - Czarnecki, Christian
A1  - Brockmann, Carsten
T1  - Visual analytics for knowledge management
T2  - INFORMATIK 2023 - Designing Futures: Zukünfte gestalten
N2  - The management of knowledge in organizations considers both established long-term processes and cooperation in agile project teams. Since knowledge can be both tacit and explicit, its transfer from the individual to the organizational knowledge base poses a challenge in organizations. This challenge increases when the fluctuation of knowledge carriers is exceptionally high. Especially in large projects in which external consultants are involved, there is a risk that critical, company-relevant knowledge generated in the project will leave the company with the external knowledge carrier and thus be lost. In this paper, we show the advantages of an early warning system for knowledge management to avoid this loss. In particular, the potential of visual analytics in the context of knowledge management systems is presented and discussed. We present a project for the development of a business-critical software system and discuss the first implementations and results.
Y1  - 2023
SN  - 978-3-88579-731-9
U6  - https://doi.org/10.18420/inf2023_187
SN  - 1617-5468
N1  - INFORMATIK 2023, 26. - 29. September 2023, Berlin
SP  - 1851
EP  - 1870
PB  - GI - Gesellschaft für Informatik
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Martin, Conrad
A1  - Frauenrath, Tobias
A1  - Özerdem, Celal
A1  - Renz, Wolfgang
A1  - Niendorf, Thoralf
T1  - Development and evaluation of a small and mobile Magneto Alert Sensor (MALSE) to support safety requirements for magnetic resonance imaging
JF  - European Radiology
N2  - Objective
The purpose of this study is to (i) design a small and mobile Magnetic field ALert SEnsor (MALSE), (ii) to carefully evaluate its sensors to their consistency of activation/deactivation and sensitivity to magnetic fields, and (iii) to demonstrate the applicability of MALSE in 1.5 T, 3.0 T and 7.0 T MR fringe field environments.

Methods
MALSE comprises a set of reed sensors, which activate in response to their exposure to a magnetic field. The activation/deactivation of reed sensors was examined by moving them in/out of the fringe field generated by 7TMR.

Results
The consistency with which individual reed sensors would activate at the same field strength was found to be 100% for the setup used. All of the reed switches investigated required a substantial drop in ambient magnetic field strength before they deactivated.

Conclusions
MALSE is a simple concept for alerting MRI staff to a ferromagnetic object being brought into fringe magnetic fields which exceeds MALSEs activation magnetic field. MALSE can easily be attached to ferromagnetic objects within the vicinity of a scanner, thus creating a barrier for hazardous situations induced by ferromagnetic parts which should not enter the vicinity of an MR-system to occur.
KW  - MRI
KW  - MR safety
KW  - Magneto alert sensor
KW  - High field MRI
KW  - Uktrahigh field MRI
Y1  - 2011
U6  - https://doi.org/10.1007/s00330-011-2153-z
SN  - 1432-1084
VL  - 21
SP  - 2187
EP  - 2192
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - JOUR
A1  - Frauenrath, Tobias
A1  - Fuchs, Katharina
A1  - Dieringer, Matthias A.
A1  - Özerdem, Celal
A1  - Patel, Nishan
A1  - Renz, Wolfgang
A1  - Greiser, Andreas
A1  - Elgeti, Thomas
A1  - Niendorf, Thoralf
T1  - Detailing the use of magnetohydrodynamic effects for synchronization of MRI with the cardiac cycle: A feasibility study
JF  - Journal of Magnetic Resonance Imaging
N2  - Purpose:
To investigate the feasibility of using magnetohydrodynamic (MHD) effects for synchronization of magnetic resonance imaging (MRI) with the cardiac cycle.

Materials and Methods:
The MHD effect was scrutinized using a pulsatile flow phantom at B0 = 7.0 T. MHD effects were examined in vivo in healthy volunteers (n = 10) for B0 ranging from 0.05–7.0 T. Noncontrast-enhanced MR angiography (MRA) of the carotids was performed using a gated steady-state free-precession (SSFP) imaging technique in conjunction with electrocardiogram (ECG) and MHD synchronization.

Results:
The MHD potential correlates with flow velocities derived from phase contrast MRI. MHD voltages depend on the orientation between B0 and the flow of a conductive fluid. An increase in the interelectrode spacing along the flow increases the MHD potential. In vivo measurement of the MHD effect provides peak voltages of 1.5 mV for surface areas close to the common carotid artery at B0 = 7.0 T. Synchronization of MRI with the cardiac cycle using MHD triggering is feasible. MHD triggered MRA of the carotids at 3.0 T showed an overall image quality and richness of anatomic detail, which is comparable to ECG-triggered MRAs.

Conclusion:
This feasibility study demonstrates the use of MHD effects for synchronization of MR acquisitions with the cardiac cycle. J. Magn. Reson. Imaging 2012;36:364–372. © 2012 Wiley Periodicals, Inc.
Y1  - 2012
U6  - https://doi.org/10.1002/jmri.23634
SN  - 1522-2586
VL  - 36
IS  - 2
SP  - 364
EP  - 372
PB  - Wiley-Liss
CY  - New York
ER  - 
TY  - JOUR
A1  - von Knobelsdorf-Brenkenhoff, Florian
A1  - Frauenrath, Tobias
A1  - Prothmann, Marcel
A1  - Dieringer, Matthias A.
A1  - Hezel, Fabian
A1  - Renz, Wolfgang
A1  - Kretschel, Kerstin
A1  - Niendorf, Thoralf
A1  - Schulz-Menger, Jeanette
T1  - Cardiac chamber quantification using magnetic resonance imaging at 7 Tesla—a pilot study
N2  - Objectives
Interest in cardiovascular magnetic resonance (CMR) at 7 T is motivated by the expected increase in spatial and temporal resolution, but the method is technically challenging. We examined the feasibility of cardiac chamber quantification at 7 T.

Methods
A stack of short axes covering the left ventricle was obtained in nine healthy male volunteers. At 1.5 T, steady-state free precession (SSFP) and fast gradient echo (FGRE) cine imaging with 7 mm slice thickness (STH) were used. At 7 T, FGRE with 7 mm and 4 mm STH were applied. End-diastolic volume, end-systolic volume, ejection fraction and mass were calculated.

Results
All 7 T examinations provided excellent blood/myocardium contrast for all slice directions. No significant difference was found regarding ejection fraction and cardiac volumes between SSFP at 1.5 T and FGRE at 7 T, while volumes obtained from FGRE at 1.5 T were underestimated. Cardiac mass derived from FGRE at 1.5 and 7 T was larger than obtained from SSFP at 1.5 T. Agreement of volumes and mass between SSFP at 1.5 T and FGRE improved for FGRE at 7 T when combined with an STH reduction to 4 mm.

Conclusions
This pilot study demonstrates that cardiac chamber quantification at 7 T using FGRE is feasible and agrees closely with SSFP at 1.5 T.
Y1  - 2010
U6  - https://doi.org/10.1007/s00330-010-1888-2
SN  - 0938-7994
VL  - 20
SP  - 2844
EP  - 2852
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - GEN
A1  - Waiczies, Helmar
A1  - Kühne, André
A1  - Winter, Lukas
A1  - Frauenrath, Tobias
A1  - Hoffmann, Werner
A1  - Ittermann, Bernd
A1  - Waiczies, Sonia
A1  - Niendorf, Thoralf
T1  - Towards theranostics of rheumatoid arthritis: 1H/19F imaging of non-steroidal anti-inflammatory drugs in hand and wrist at 7 Tesla
T2  - 2013 ISMRM Annual Meeting Proceedings
N2  - We have developed a double-tuned ¹H/¹⁹F birdcage resonator dedicated for hand and wrist imaging at 7 T to locally image non-steroidal anti-inflammatory drugs (NSAID) such as 2-{[3-(Trifluoromethyl) phenyl]amino}benzoic acid. The preliminary in vivo images acquired by the double-tuned ¹H/¹⁹F birdcage resonator demonstrate the feasibility for ¹H/¹⁹F hand- and wrist-imaging at 7 T. While the diagnostic quality of the coil needs to be assessed in patients with inflammatory rheumatoid disease, first ¹⁹F images of the NSAID are encouraging, and point towards the prospect of applying ¹⁹F-MRI to visualize and quantify the concentration of therapeutically-active compound at the sites of inflammation.
Y1  - 2013
SN  - 1545-4428
N1  - ISMRM 21st Annual Meeting & Exhibition, 20-26 April 2013, Salt Lake City, Utah, USA
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  - Gräßl, Andreas
A1  - Renz, Wolfgang
A1  - Hezel, Fabian
A1  - Dieringer, Matthias A.
A1  - Winter, Lukas
A1  - Özerdem, Celal
A1  - Rieger, Jan
A1  - Kellmann, Peter
A1  - Santoro, Davide
A1  - Lindel, Tomasz Dawid
A1  - Frauenrath, Tobias
A1  - Pfeiffer, Harald
A1  - Niendorf, Thoralf
T1  - Modular 32-channel transceiver coil array for cardiac MRI at 7.0T
JF  - Magnetic Resonance in Medicine
N2  - Purpose
To design and evaluate a modular transceiver coil array with 32 independent channels for cardiac MRI at 7.0T.

Methods
The modular coil array comprises eight independent building blocks, each containing four transceiver loop elements. Numerical simulations were used for B1+ field homogenization and radiofrequency (RF) safety validation. RF characteristics were examined in a phantom study. The array's suitability for accelerated high spatial resolution two-dimensional (2D) FLASH CINE imaging of the heart was examined in a volunteer study.

Results
Transmission field adjustments and RF characteristics were found to be suitable for the volunteer study. The signal-to-noise intrinsic to 7.0T together with the coil performance afforded a spatial resolution of 1.1 × 1.1 × 2.5 mm3 for 2D CINE FLASH MRI, which is by a factor of 6 superior to standardized CINE protocols used in clinical practice at 1.5T. The 32-channel transceiver array supports one-dimensional acceleration factors of up to R = 4 without impairing image quality significantly.

Conclusion
The modular 32-channel transceiver cardiac array supports accelerated and high spatial resolution cardiac MRI. The array is compatible with multichannel transmission and provides a technological basis for future clinical assessment of parallel transmission techniques at 7.0T.
Y1  - 2013
U6  - https://doi.org/10.1002/mrm.24903
SN  - 1522-2594
VL  - 72
IS  - 1
SP  - 276
EP  - 290
PB  - Wiley-Liss
CY  - New York
ER  - 
TY  - GEN
A1  - Lindel, Tomasz Dawid
A1  - Greiser, Andreas
A1  - Waxman, Patrick
A1  - Dietterle, Martin
A1  - Seifert, Frank
A1  - Fontius, Ulrich
A1  - Renz, Wolfgang
A1  - Dieringer, Matthias A.
A1  - Frauenrath, Tobias
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
A1  - Ittermann, Bernd
T1  - Cardiac CINE MRI at 7 T using a transmit array
T2  - 2012 ISMRM Annual Meeting Proceedings
N2  - With its need for high SNR and short acquisition times, Cardiac MRI (CMR) is an intriguing target application for ultrahigh field MRI. Due to the sheer size of the upper torso, however, the known RF issues of 7T MRI are also most prominent in CMR. Recent years brought substantial progress but the full potential of the ultrahigh field for CMR is yet to be exploited. Parallel transmission (pTx) is a promising approach in this context and several groups have already reported B1 shimming for 7T CMR. In such a static pTx application amplitudes and phases of all Tx channels are adjusted individually but otherwise imaging techniques established in current clinical practice 1.5 T and 3 T are applied. More advanced forms of pTx as spatially selective excitation (SSE) using Transmit SENSE promise additional benefits like faster imaging with reduced fields of view or improved SAR control. SSE requires the full dynamic capabilities of pTx, however, and for the majority of today's implemented pTx hardware the internal synchronization of the Tx array does not easily permit external triggering as needed for CMR. Here we report a software solution to this problem and demonstrate the feasibility of CINE CMR at 7 T using a Tx array.
Y1  - 2012
SN  - 1545-4428
N1  - ISMRM 20th Annual Meeting & Exhibition, 5-11 May 2012, Melbourne, Australia
ER  - 
TY  - CHAP
A1  - Chircu, Alina
A1  - Czarnecki, Christian
A1  - Friedmann, Daniel
A1  - Pomaskow, Johanna
A1  - Sultanow, Eldar
T1  - Towards a Digital Twin of Society
T2  - Proceedings of the 56th Hawaii International Conference on System Sciences 2023
N2  - This paper describes the potential for developing a digital twin of society- a dynamic model that can be used to observe, analyze, and predict the evolution of various societal aspects. Such a digital twin can help governmental agencies and policy makers in interpreting trends, understanding challenges, and making decisions regarding investments or policies necessary to support societal development and ensure future prosperity. The paper reviews related work regarding the digital twin paradigm and its applications. The paper presents a motivating case study- an analysis of opportunities and challenges faced by the German federal employment agency, Bundesagentur f¨ur Arbeit (BA), proposes solutions using digital twins, and describes initial proofs of concept for such solutions.
KW  - Digital twin
KW  - Digital transformation
KW  - Prototype
KW  - Society
KW  - Stress testing
Y1  - 2023
SN  - 978-0-9981331-6-4
N1  - 56th Hawaii International Conference on System Sciences, HICSS 2023, Maui, Hawaii, USA, January 3-6, 2023
SP  - 6748
EP  - 6757
PB  - University of Hawai'i
CY  - Honolulu
ER  - 
TY  - CHAP
A1  - Niendorf, Thoralf
A1  - Winter, Lukas
A1  - Frauenrath, Tobias
ED  - Millis, Richard
T1  - Electrocardiogram in an MRI environment: Clinical needs, practical considerations, safety implications, technical solutions and fFuture directions
T2  - Advances in Electrocardiograms - Methods and Analysis
Y1  - 2012
SN  - 978-953-307-923-3 (print)
SN  - 978-953-51-6762-4 (eBook)
U6  - https://doi.org/10.5772/24340
SP  - 309
EP  - 324
PB  - IntechOpen
CY  - London
ER  - 
TY  - JOUR
A1  - Frauenrath, Tobias
A1  - Hezel, Fabian
A1  - Renz, Wolfgang
A1  - de Geyer d'Orth, Thibaut
A1  - Dieringer, Matthias
A1  - von Knobelsdorf-Brenkenhoff, Florian
A1  - Prothmann, Marcel
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
T1  - Acoustic cardiac triggering: a practical solution for synchronization and gating of cardiovascular magnetic resonance at 7 Tesla
JF  - Journal of Cardiovascular Magnetic Resonance
N2  - Background
To demonstrate the applicability of acoustic cardiac triggering (ACT) for imaging of the heart at ultrahigh magnetic fields (7.0 T) by comparing phonocardiogram, conventional vector electrocardiogram (ECG) and traditional pulse oximetry (POX) triggered 2D CINE acquisitions together with (i) a qualitative image quality analysis, (ii) an assessment of the left ventricular function parameter and (iii) an examination of trigger reliability and trigger detection variance derived from the signal waveforms.

Results
ECG was susceptible to severe distortions at 7.0 T. POX and ACT provided waveforms free of interferences from electromagnetic fields or from magneto-hydrodynamic effects. Frequent R-wave mis-registration occurred in ECG-triggered acquisitions with a failure rate of up to 30% resulting in cardiac motion induced artifacts. ACT and POX triggering produced images free of cardiac motion artefacts. ECG showed a severe jitter in the R-wave detection. POX also showed a trigger jitter of approximately Δt = 72 ms which is equivalent to two cardiac phases. ACT showed a jitter of approximately Δt = 5 ms only. ECG waveforms revealed a standard deviation for the cardiac trigger offset larger than that observed for ACT or POX waveforms.

Image quality assessment showed that ACT substantially improved image quality as compared to ECG (image quality score at end-diastole: ECG = 1.7 ± 0.5, ACT = 2.4 ± 0.5, p = 0.04) while the comparison between ECG vs. POX gated acquisitions showed no significant differences in image quality (image quality score: ECG = 1.7 ± 0.5, POX = 2.0 ± 0.5, p = 0.34).

Conclusions
The applicability of acoustic triggering for cardiac CINE imaging at 7.0 T was demonstrated. ACT's trigger reliability and fidelity are superior to that of ECG and POX. ACT promises to be beneficial for cardiovascular magnetic resonance at ultra-high field strengths including 7.0 T.
KW  - Interval Time Series
KW  - Image Quality Score
KW  - Image Quality Assessment
KW  - Sound Pressure Level
KW  - Cardiovascular Magnetic Resonance
Y1  - 2010
U6  - https://doi.org/10.1186/1532-429X-12-67
SN  - 1532-429X
VL  - 12
IS  - 1
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Grande, Marion
A1  - Meffert, Elisabeth
A1  - Schoenberger, Eva
A1  - Jung, Stefanie
A1  - Frauenrath, Tobias
A1  - Huber, Walter
A1  - Hussmann, Katja
A1  - Moormann, Mareike
A1  - Heim, Stefan
T1  - From a concept to a word in a syntactically complete sentence: An fMRI study on spontaneous language production in an overt picture description task
JF  - NeuroImage
N2  - Spontaneous language has rarely been subjected to neuroimaging studies. This study therefore introduces a newly developed method for the analysis of linguistic phenomena observed in continuous language production during fMRI.

Most neuroimaging studies investigating language have so far focussed on single word or — to a smaller extent — sentence processing, mostly due to methodological considerations. Natural language production, however, is far more than the mere combination of words to larger units. Therefore, the present study aimed at relating brain activation to linguistic phenomena like word-finding difficulties or syntactic completeness in a continuous language fMRI paradigm. A picture description task with special constraints was used to provoke hesitation phenomena and speech errors. The transcribed speech sample was segmented into events of one second and each event was assigned to one category of a complex schema especially developed for this purpose. The main results were: conceptual planning engages bilateral activation of the precuneus. Successful lexical retrieval is accompanied – particularly in comparison to unsolved word-finding difficulties – by the left middle and superior temporal gyrus. Syntactic completeness is reflected in activation of the left inferior frontal gyrus (IFG) (area 44). In sum, the method has proven to be useful for investigating the neural correlates of lexical and syntactic phenomena in an overt picture description task. This opens up new prospects for the analysis of spontaneous language production during fMRI.
Y1  - 2012
U6  - https://doi.org/10.1016/j.neuroimage.2012.03.087
SN  - 1522-2586
VL  - 61
IS  - 3
SP  - 702
EP  - 714
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - GEN
A1  - Gräßl, Andreas
A1  - Renz, Wolfgang
A1  - Hezel, Fabian
A1  - Frauenrath, Tobias
A1  - Pfeiffer, Harald
A1  - Hoffmann, Werner
A1  - Kellmann, Peter
A1  - Martin, Conrad
A1  - Niendorf, Thoralf
T1  - Design, evaluation and application of a modular 32 channel transmit/receive surface coil array for cardiac MRI at 7T
T2  - 2012 ISMRM Annual Meeting Proceedings
N2  - Cardiac MR (CMR) at ultrahigh (≥7.0 T) fields is regarded as one of the most challenging MRI applications. At 7.0 T image quality is not always exclusively defined by signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). Detrimental effects bear the potential to spoil the signal-to-noise (SNR) and contrast-to-noise (CNR) benefits of cardiac MR (CMR) at 7.0 T. B₁⁺-inhomogeneities and signal voids represent the main challenges. Various pioneering coil concepts have been proposed to tackle these issues, enabling cardiac MRI at 7.0 T. This includes a trend towards an ever larger number of transmit and receive channels.  This approach affords multi-dimensional B₁⁺ modulations to improve B₁⁺ shimming performance and to enhance RF efficiency. Also, parallel imaging benefits from a high number of receive channels enabling two-dimensional acceleration. Realizing the limitations of existing coil designs tailored for UHF CMR and recognizing the opportunities of a many element TX/RX channel architecture this work proposes a modular, two dimensional 32-channel transmit and receive array using loop elements and examines its efficacy for enhanced B¹+ homogeneity and improved parallel imaging performance.
Y1  - 2012
SN  - 1545-4428
N1  - ISMRM 20th Annual Meeting & Exhibition, 5-11 May 2012, Melbourne, Australia
ER  - 
TY  - CHAP
A1  - Harlacher, Markus
A1  - Altepost, Andrea
A1  - Elsen, Ingo
A1  - Ferrein, Alexander
A1  - Hansen-Ampah, Adjan
A1  - Merx, Wolfgang
A1  - Niehues, Sina
A1  - Schiffer, Stefan
A1  - Shahinfar, Fatemeh Nasim
ED  - Lausberg, Isabel
ED  - Vogelsang, Michael
T1  - Approach for the identification of requirements on the design of AI-supported work systems (in problem-based projects)
T2  - AI in Business and Economics
N2  - To successfully develop and introduce concrete artificial intelligence (AI) solutions in operational practice, a comprehensive process model is being tested in the WIRKsam joint project. It is based on a methodical approach that integrates human, technical and organisational aspects and involves employees in the process. The chapter focuses on the procedure for identifying requirements for a work system that is implementing AI in problem-driven projects and for selecting appropriate AI methods. This means that the use case has already been narrowed down at the beginning of the project and must be completely defined in the following. Initially, the existing preliminary work is presented. Based on this, an overview of all procedural steps and methods is given. All methods are presented in detail and good practice approaches are shown. Finally, a reflection of the developed procedure based on the application in nine companies is given.
KW  - Business understanding
KW  - Requirements
KW  - Process model
KW  - Participation
KW  - Im-plementation of AI-systems
Y1  - 2024
SN  - 9783110790320
U6  - https://doi.org/10.1515/9783110790320
SP  - 87
EP  - 99
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Frauenrath, Tobias
A1  - Niendorf, Thoralf
A1  - Kob, Malte
T1  - Acoustic method for synchronization of Magnetic Resonance Imaging (MRI)
JF  - Acta Acustica
N2  - Magnetic Resonance Imaging (MRI) of moving organs requires synchronization with physiological motion or flow, which dictate the viable window for data acquisition. To meet this challenge, this study proposes an acoustic gating device (ACG) that employs acquisition and processing of acoustic signals for synchronization while providing MRI compatibility, immunity to interferences with electro-magnetic and acoustic fields and suitability for MRI at high magnetic field strengths. The applicability and robustness of the acoustic gating approach is examined in a pilot study, where it substitutes conventional ECG-gating for cardiovascular MR. The merits and limitations of the ACG approach are discussed. Implications for MR imaging in the presence of physiological motion are considered including synchronization with other structure- or motion borne sounds.
Y1  - 2008
U6  - https://doi.org/10.3813/AAA.918017
SN  - 1861-9959
VL  - 94
IS  - 1
SP  - 148
EP  - 155
PB  - Hirzel
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Hillgärtner, Michael
T1  - Normative Regulations
JF  - ECPE Cluster Seminar EMC in Hybrid and Electric Vehicles : 18 May 2010, Fraunhofer Institute Erlangen
Y1  - 2010
N1  - ECPE Workshop: EMC in Hybrid and Electric Vehicles, 18/05/2010, Erlangen, Germany
PB  - European Center for Power Electronics
CY  - Nürnberg
ER  - 
TY  - JOUR
A1  - Scholl, Ingrid
A1  - Palm, Christoph
A1  - Lehmann, Thomas Martin
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  - JOUR
A1  - Fiedler, Thomas M.
A1  - Ladd, Mark E.
A1  - Bitz, Andreas
T1  - RF safety assessment of a bilateral four-channel transmit/receive 7 Tesla breast coil: SAR versus temperature limits
JF  - Medical Physics
Y1  - 2017
U6  - https://doi.org/10.1002/mp.12034
N1  - This article is corrected by:
Errata: Erratum: “RF safety assessment of a bilateral four-channel transmit/receive 7 Tesla breast coil: SAR versus tissue temperature limits” [Med. Phys. 44(1), 143–157 (2017)] Volume 44, Issue 2, 772
VL  - 44
IS  - 1
SP  - 143
EP  - 157
ER  - 
TY  - JOUR
A1  - Fiedler, Thomas M.
A1  - Ladd, Mark E.
A1  - Clemens, Markus
A1  - Bitz, Andreas
T1  - Safety of subjects during radiofrequency exposure in ultra-high-field magnetic resonance imaging
JF  - IEEE Letters on Electromagnetic Compatibility Practice and Applications
N2  - Magnetic resonance imaging (MRI) is one of the most important medical imaging techniques. Since the introduction of MRI in the mid-1980s, there has been a continuous trend toward higher static magnetic fields to obtain i.a. a higher signal-to-noise ratio. The step toward ultra-high-field (UHF) MRI at 7 Tesla and higher, however, creates several challenges regarding the homogeneity of the spin excitation RF transmit field and the RF exposure of the subject. In UHF MRI systems, the wavelength of the RF field is in the range of the diameter of the human body, which can result in inhomogeneous spin excitation and local SAR hotspots. To optimize the homogeneity in a region of interest, UHF MRI systems use parallel transmit systems with multiple transmit antennas and time-dependent modulation of the RF signal in the individual transmit channels. Furthermore, SAR increases with increasing field strength, while the SAR limits remain unchanged. Two different approaches to generate the RF transmit field in UHF systems using antenna arrays close and remote to the body are investigated in this letter. Achievable imaging performance is evaluated compared to typical clinical RF transmit systems at lower field strength. The evaluation has been performed under consideration of RF exposure based on local SAR and tissue temperature. Furthermore, results for thermal dose as an alternative RF exposure metric are presented.
Y1  - 2020
SN  - 2637-6423
U6  - https://doi.org/10.1109/LEMCPA.2020.3029747
VL  - 2
IS  - 3
SP  - 1
EP  - 8
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Scholl, Ingrid
A1  - Bartella, Alexander K.
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  - https://doi.org/10.1007/978-3-658-25326-4_32
SP  - 152
EP  - 157
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Schmidt, Katharina
A1  - Forkmann, Katarina
A1  - Schultz, Heidrun
A1  - Gratz, Marcel
A1  - Bitz, Andreas
A1  - Wiech, Katja
A1  - Bingel, Ulrike
T1  - Enhanced Neural Reinstatement for Evoked Facial Pain Compared With Evoked Hand Pain
JF  - The  Journal of Pain
Y1  - 2019
U6  - https://doi.org/10.1016/j.jpain.2019.03.003
SN  - 1526-5900
IS  - In Press, Corrected Proof
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Schmidt, Katharina
A1  - Forkmann, Katarina
A1  - Sinke, C.
A1  - Gratz, Marcel
A1  - Bitz, Andreas
A1  - Bingel, Ulrike
T1  - The differential effect of trigeminal vs. peripheral pain stimulation on visual processing and memory encoding is influenced by pain-related fear
JF  - NeuroImage
N2  - Compared to peripheral pain, trigeminal pain elicits higher levels of fear, which is assumed to enhance the interruptive effects of pain on concomitant cognitive processes. In this fMRI study we examined the behavioral and neural effects of trigeminal (forehead) and peripheral (hand) pain on visual processing and memory encoding. Cerebral activity was measured in 23 healthy subjects performing a visual categorization task that was immediately followed by a surprise recognition task. During the categorization task subjects received concomitant noxious electrical stimulation on the forehead or hand. Our data show that fear ratings were significantly higher for trigeminal pain. Categorization and recognition performance did not differ between pictures that were presented with trigeminal and peripheral pain. However, object categorization in the presence of trigeminal pain was associated with stronger activity in task-relevant visual areas (lateral occipital complex, LOC), memory encoding areas (hippocampus and parahippocampus) and areas implicated in emotional processing (amygdala) compared to peripheral pain. Further, individual differences in neural activation between the trigeminal and the peripheral condition were positively related to differences in fear ratings between both conditions. Functional connectivity between amygdala and LOC was increased during trigeminal compared to peripheral painful stimulation. Fear-driven compensatory resource activation seems to be enhanced for trigeminal stimuli, presumably due to their exceptional biological relevance.
Y1  - 2016
U6  - https://doi.org/10.1016/j.neuroimage.2016.03.026
SN  - 1053-8119
VL  - 134
SP  - 386
EP  - 395
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Orzada, Stephan
A1  - Solbach, Klaus
A1  - Gratz, Marcel
A1  - Brunheim, Sascha
A1  - Fiedler, Thomas M.
A1  - Johst, Sören
A1  - Bitz, Andreas
A1  - Shooshtary, Samaneh
A1  - Abuelhaija, Ashraf
A1  - Voelker, Maximilian N.
A1  - Rietsch, Stefan H. G.
A1  - Kraff, Oliver
A1  - Maderwald, Stefan
A1  - Flöser, Martina
A1  - Oehmingen, Mark
A1  - Quick, Harald H.
A1  - Ladd, Mark E.
T1  - A 32-channel parallel transmit system add-on for 7T MRI
JF  - Plos one
Y1  - 2019
U6  - https://doi.org/10.1371/journal.pone.0222452
ER  - 
TY  - JOUR
A1  - Rietsch, Stefan H. G.
A1  - Brunheim, Sascha
A1  - Orzada, Stephan
A1  - Voelker, Maximilian N.
A1  - Maderwald, Stefan
A1  - Bitz, Andreas
A1  - Gratz, Marcel
A1  - Ladd, Mark E.
A1  - Quick, Harald H.
T1  - Development and evaluation of a 16-channel receive-only RF coil to improve 7T ultra-high field body MRI with focus on the spine
JF  - Magnetic Resonance in Medicine
Y1  - 2019
U6  - https://doi.org/10.1002/mrm.27731
SN  - 1522-2594
IS  - Early view
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Orzada, Stephan
A1  - Bitz, Andreas
A1  - Johst, Sören
A1  - Gratz, Marcel
A1  - Völker, Maximilian N.
A1  - Kraff, Oliver
A1  - Abuelhaija, Ashraf
A1  - Fiedler, Thomas M.
A1  - Solbach, Klaus
A1  - Quick, Harald H.
A1  - Ladd, Mark E.
T1  - Analysis of an integrated 8-Channel Tx/Rx body array for use as a body coil in 7-Tesla MRI
JF  - Frontiers in Physics
Y1  - 2017
U6  - https://doi.org/10.3389/fphy.2017.00017
SN  - 2296-424X
N1  - Article number 17
VL  - 5
IS  - Jun
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Gerstenberger, Volker
A1  - Lahaije, Paul
T1  - Internet ID – Flexible Reuse of Mobile Phone Authentication Security for Service Access / Schuba, Marko ; Gerstenberger, Volker, ; Lahaije, Paul
Y1  - 2004
N1  - Nordsec 2004, Helsinki ; Nordic Workshop on Secure IT-systems <9, 2004>
SP  - 1
EP  - 7
ER  - 
TY  - JOUR
A1  - Maus, Stefan
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Forensic Analysis of Geodata in Android Smartphones
Y1  - 2011
N1  - Cyberforensics 2011, Glasgow
SP  - 1
EP  - 11
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Busboom, Axel
A1  - Herwono, Ian
A1  - Zavagli, Guido
T1  - Unambiguous Device Identification and Fast Connection Setup in Bluetooth / Busboom, Axel ; Herwono, Ian ; Schuba, Marko ; Zavagli, Guido
JF  - European wireless 2002 : next generation wireless networks: technologies, protocols, services and applications ; technical sessions: 26 - 28 February 2002, tutorials: 25 February 2002, Centro Affari, Florence, Italy ; proceedings / sponsored by EUREL ... General chair: Luciano Lenzini
Y1  - 2002
SP  - 1
EP  - 5
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  - 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  - 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
T1  - An Analysis of Retransmission Strategies for Reliable Multicast Protocols / Schuba, M. ; Reichl, P.
JF  - Performance of information and communication systems : IFIP TC 6,WG 6.3 Seventh International Conference on Performance of Information and Communication Systems (PICS '98), 25 - 28 May, Lund, Sweden / ed. by Ulf Körner ...
Y1  - 1998
SN  - 0-412-83730-7
SP  - 1
EP  - 12
PB  - Chapman  Hall
CY  - London
ER  - 
TY  - JOUR
A1  - Schuba, Marko
T1  - Performance Analysis of Reliable Multicast Mechanisms for Widely Spread Distributed Applications in the Internet
JF  - International Conference on Parallel and Distributed Processing Techniques and Applications : PDPTA '99 ; June 28 - July 1, 1999, Las Vegas, Nevada, USA / ed.: Hamid R. Arabnia
Y1  - 1999
SN  - 1892512157
SP  - 1
EP  - 7
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
T1  - Analysis of Feedback Error Control Schemes for Block Based Video Communication / Meggers, Jens ; Schuba, Marko
Y1  - 1999
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  - 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  - 
TY  - JOUR
A1  - Schaefer, Thomas
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Windows Phone 7 from a Digital Forensics’ Perspective
Y1  - 2011
U6  - https://doi.org/10.1007/978-3-642-35515-8_6
N1  - ICDF2C <3, 2011, Dublin>
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Broenner, Simon
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Streamlining extraction and analysis of android RAM images
T2  - Proceedings of the 2nd International Conference on Information Systems Security and Privacy - ICISSP
N2  - The Android operating system powers the majority of the world’s mobile devices and has been becoming increasingly important in day-to-day digital forensics. Therefore, technicians and analysts are in need of reliable methods for extracting and analyzing memory images from live Android systems. This paper takes different existing, extraction methods and derives a universal, reproducible, reliably documented method for both extraction and analysis. In addition the VOLIX II front-end for the Volatility Framework is extended with additional functionality to make the analysis of Android memory images easier for technically non-adept users.
Y1  - 2016
SN  - 978-989-758-167-0
U6  - https://doi.org/10.5220/0005652802550264
SP  - 255
EP  - 264
PB  - SciTePress
CY  - Setúbal
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  - Haverkort, Boudewijn R.
A1  - Schneider, Gaby
T1  - Performance evaluation of multicast communication in packet-switched networks / Schuba, Marko ; Haverkort, Boudewijn  R. ; Schneider, Gaby
JF  - Performance Evaluation. 39 (2000), H. 1-4
Y1  - 2000
SN  - 0166-5316
U6  - https://doi.org/10.1016/S0166-5316(99)00058-9
SP  - 61
EP  - 80
ER  - 
TY  - JOUR
A1  - Schuba, Marko
A1  - Hermanns, Oliver
T1  - Performance Investigations of the IP Multicast Architecture / Hermanns, Oliver ; Schuba, Marko
JF  - Performance of the IP Multicast Achitecture . Proceedings JENC 6. Proceedings of the 6th Joint European Networking Conference, Tel Aviv
Y1  - 1995
N1  - Reprinted in Computer Networks and ISDN Systems 28 pp 429-439, 1996
SP  - 121-1
EP  - 121-8
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  - Gong, Jing
A1  - Raut, Amod
A1  - Pelzer, Marcel
A1  - Hüning, Felix
T1  - Marking-based perpendicular parking slot detection algorithm using LiDAR sensors
JF  - Vehicles
N2  - The emergence of automotive-grade LiDARs has given rise to new potential methods to develop novel advanced driver assistance systems (ADAS). However, accurate and reliable parking slot detection (PSD) remains a challenge, especially in the low-light conditions typical of indoor car parks. Existing camera-based approaches struggle with these conditions and require sensor fusion to determine parking slot occupancy. This paper proposes a parking slot detection (PSD) algorithm which utilizes the intensity of a LiDAR point cloud to detect the markings of perpendicular parking slots. LiDAR-based approaches offer robustness in low-light environments and can directly determine occupancy status using 3D information. The proposed PSD algorithm first segments the ground plane from the LiDAR point cloud and detects the main axis along the driving direction using a random sample consensus algorithm (RANSAC). The remaining ground point cloud is filtered by a dynamic Otsu’s threshold, and the markings of parking slots are detected in multiple windows along the driving direction separately. Hypotheses of parking slots are generated between the markings, which are cross-checked with a non-ground point cloud to determine the occupancy status. Test results showed that the proposed algorithm is robust in detecting perpendicular parking slots in well-marked car parks with high precision, low width error, and low variance. The proposed algorithm is designed in such a way that future adoption for parallel parking slots and combination with free-space-based detection approaches is possible. This solution addresses the limitations of camera-based systems and enhances PSD accuracy and reliability in challenging lighting conditions.
KW  - point cloud processing
KW  - RANSAC
KW  - line detection
KW  - automated parking
KW  - LiDAR
KW  - parking slot detection
Y1  - 2024
U6  - https://doi.org/10.3390/vehicles6040083
SN  - 2624-8921
N1  - Corresponding author: Felix Hüning
VL  - 6
IS  - 4
SP  - 1717
EP  - 1729
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Hüning, Felix
A1  - Heuermann, Holger
A1  - Wache, Franz-Josef
T1  - Wireless CAN without WLAN or Bluetooth
JF  - CAN Newsletter
N2  - In two developed concepts, dual-mode radio enables CAN participants to be integrated wirelessly into a CAN network. Constructed from a few components, a protocol-free, real-time transmission and thus transparent integration into CAN is provided.
Y1  - 2018
IS  - December
SP  - 44
EP  - 46
PB  - CAN in Automation GmbH
CY  - Nürnberg
ER  - 
TY  - JOUR
A1  - Hüning, Felix
A1  - Backes, Andreas
T1  - Direct observation of large Barkhausen jump in thin Vicalloy wires
JF  - IEEE Magnetics Letters
Y1  - 2020
SN  - 1949-307X
U6  - https://doi.org/10.1109/LMAG.2020.3046411
VL  - 11
IS  - Art. 2506504
SP  - 1
EP  - 4
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Kramer, Pia
A1  - Bragard, Michael
A1  - Ritz, Thomas
A1  - Ferfer, Ute
A1  - Schiffers, Tim
T1  - Visualizing, Enhancing and Predicting Students’ Success through ECTS Monitoring
T2  - 2024 IEEE Global Engineering Education Conference (EDUCON)
N2  - This paper serves as an introduction to the ECTS monitoring system and its potential applications in higher education. It also emphasizes the potential for ECTS monitoring to become a proactive system, supporting students by predicting academic success and identifying groups of potential dropouts for tailored support services. The use of the nearest neighbor analysis is suggested for improving data analysis and prediction accuracy.
KW  - Monitoring
KW  - Engineering education
KW  - Data visualization
KW  - Accuracy
KW  - Data analysis
Y1  - 2024
U6  - https://doi.org/10.1109/EDUCON60312.2024.10578652
SN  - 2165-9559
SN  - 2165-9567 (eISSN)
N1  - 2024 IEEE Global Engineering Education Conference (EDUCON), 08-11 May 2024, Kos Island, Greece
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Rütters, René
A1  - Bragard, Michael
A1  - Dolls, Sarah
T1  - The Inverted Rotary Pendulum: Facilitating Practical Teaching in Advanced Control Engineering
T2  - 2024 IEEE Global Engineering Education Conference (EDUCON)
N2  - This paper outlines a practical approach to teach control engineering principles, with an inverted rotary pendulum, serving as an illustrative example. It shows how the pendulum is embedded in an advanced course of control engineering. This approach is incorporated into a flipped-classroom concept, as well as classical teaching concepts, offering students practical experience in control engineering. In addition, the design of the pendulum is shown, using a Raspberry Pi as the target platform for Matlab Simulink. This pendulum can be used in the classroom to evaluate the controller design mentioned above. It is analysed if the use of the pendulum generates a deeper understanding of the learning contents.
KW  - Matlab
KW  - Engineering education
KW  - Online services
KW  - Software packages
KW  - Electronic learning
KW  - Control engineering
Y1  - 2024
U6  - https://doi.org/10.1109/EDUCON60312.2024.10578937
SN  - 2165-9559
SN  - 2165-9567 (eISSN)
N1  - 2024 IEEE Global Engineering Education Conference (EDUCON), 08-11 May 2024, Kos Island, Greece
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Fuzzy representations and control for domestic service robots in Golog
T2  - Intelligent Robotics and Applications, 4th International Conference, ICIRA 2011, Proceedings Part II
N2  - In the RoboCup@Home domestic service robot competition, complex tasks such as "get the cup from the kitchen and bring it to the living room" or "find me this and that object in the apartment" have to be accomplished. At these competitions the robots may only be instructed by natural language. As humans use qualitative concepts such as "near" or "far", the robot needs to cope with them, too. For our domestic robot, we use the robot programming and plan language Readylog, our variant of Golog. In previous work we extended the action language Golog, which was developed for the high-level control of agents and robots, with fuzzy concepts and showed how to embed fuzzy controllers in Golog. In this paper, we demonstrate how these notions can be fruitfully applied to two domestic service robotic scenarios. In the first application, we demonstrate how qualitative fluents based on a fuzzy set semantics can be deployed. In the second program, we show an example of a fuzzy controller for a follow-a-person task.
Y1  - 2011
SN  - 978-3-642-25486-4
U6  - https://doi.org/10.1007/978-3-642-25489-5_24
N1  - Intelligent Robotics and Applications, 4th International Conference, ICIRA 2011, Aachen, Germany, December 6-8, 2011
N1  - Part of the book series: Lecture Notes in Computer Science (LNCS, volume 7102)
SP  - 241
EP  - 250
PB  - ACM
CY  - New York
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Schiffer, Stefan
A1  - Booysen, Tracy
A1  - Stopforth, Riaan
T1  - Why it is harder to run RoboCup in South Africa: Experiences from German South African collaborations
JF  - International Journal of Advanced Robotic Systems
N2  - Robots are widely used as a vehicle to spark interest in science and technology in learners. A number of initiatives focus on this issue, for instance, the Roberta Initiative, the FIRST Lego League, the World Robot Olympiad and RoboCup Junior. Robotic competitions are valuable not only for school learners but also for university students, as the RoboCup initiative shows. Besides technical skills, the students get some project exposure and experience what it means to finish their tasks on time. But qualifying students for future high-tech areas should not only be for students from developed countries. In this article, we present our experiences with research and education in robotics within the RoboCup initiative, in Germany and South Africa; we report on our experiences with trying to get the RoboCup initiative in South Africa going. RoboCup has a huge support base of academic institutions in Germany; this is not the case in South Africa. We present our ‘north–south’ collaboration initiatives in RoboCup between Germany and South Africa and discuss some of the reasons why we think it is harder to run RoboCup in South Africa.
Y1  - 2016
U6  - https://doi.org/10.1177/1729881416662789
SN  - 1729-8806
VL  - 13
IS  - 5
SP  - 1
EP  - 13
ER  - 
TY  - CHAP
A1  - Schütz, Philip
A1  - Breuer, Michael
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Malware proof on mobile phone exhibits based on GSM/GPRS traces
T2  - The Second International Conference on Cyber Security, Cyber Peacefare and Digital Forensic (CyberSec 2013) : 04.03. - 06.03.2013, Kuala Lumpur, Malaysia
Y1  - 2013
SN  - 978-0-9853483-7-3
SP  - 89
EP  - 96
PB  - The Society of Digital Information and Wireless Communication
ER  - 
TY  - CHAP
A1  - Bitz, Andreas
A1  - Kraff, O.
A1  - Orzada, S.
A1  - Maderwald, S.
A1  - Brote, Irina
A1  - Johst, S.
A1  - Ladd, E.
T1  - Assessment of RF Safety of Transmit Coils at 7 Tesla by Experimental and Numerical Procedures (490.)
T2  - 19th annual ISMRM scientific meeting and exhibition 2011 : Montreal, Quebec, Canada, 7 - 13 May 2011
Y1  - 2012
SN  - 978-1-61839-284-8
IS  - Volume 1
SP  - 475
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Bitz, Andreas
A1  - Kraff, O.
A1  - Orzada, S.
A1  - Maderwald, S.
A1  - Brote, Irina
A1  - Ladd, M.
T1  - Experimental and Numerical Assessment of RF Safety of Transmit Coils at 7 Tesla
T2  - ISMRM workshop on MR safety 2010 : RF heating of the human in MRI : workshop series. The Washington County Historic Courthouse, Stillwater, Minnesota, USA, 15 - 17 October 2010
Y1  - 2010
SN  - 978-1-62276-088-6
SP  - 195
ER  - 
TY  - JOUR
A1  - Nehr, Sascha
A1  - Baus, Lukas
A1  - Çinar, Hasan
A1  - Elsen, Ingo
A1  - Frauenrath, Tobias
T1  - Indoor environmental quality assessment in passively ventilated classrooms in Germany and estimation of ventilation energy losses
JF  - Journal of Building Engineering
N2  - In this field study we present an approach for the comprehensive and room-specific assessment of
parameters with the overall aim to realize energy-efficient provision of hygienically harmless and
thermally comfortable indoor environmental quality in naturally ventilated non-residential
buildings. The approach is based on (i) conformity assessment of room design parameters, (ii)
empirical determination of theoretically expected occupant-specific supply air flow rates and
corresponding air exchange rates, (iii) experimental determination of real occupant-specific
supply air flow rates and corresponding air exchange rates, (iv) measurement of indoor environmental
exposure conditions of T, RH, cCO2 , cPM2.5 and cTVOC, and (v) determination of real
energy demands for the prevailing ventilation scheme. Underlying assessment criteria comprise
the indoor environmental parameters of category II of EN 16798-1: Temperature T = 20 ◦C–24 ◦C,
and relative humidity RH = 25 %–60 % as well as the guide values of the German Federal
Environment Agency for cCO2 cPM2.5 and cTVOC of 1000 ppm, 15 μg m⁻³, and 1 mg m ⁻³,
respectively.
Investigation objects are six naturally ventilated classrooms of a German secondary school.
Major factors influencing indoor environmental quality in these classrooms are the specific room
volume per occupant and the window opening area. It is concluded that the rigorous implementation
of ventilation recommendations laid down by the German Federal Environment
Agency is ineffective with respect to anticipated indoor environmental parameters and inefficient
with respect to ventilation energy losses on the order of about 10 kWh m⁻² a ⁻¹ to 30 kWh m⁻²
a ⁻¹.
KW  - Indoor air quality
KW  - Indoor environmental quality
KW  - Energy-efficient ventilation
KW  - CO2
KW  - PM2.5
Y1  - 2024
SN  - 2352-7102
VL  - 97
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Prume, Klaus
A1  - Muralt, Paul
A1  - Calame, Florian
A1  - Schmitz-Kempen, Thorsten
A1  - Tiedke, Stephan
T1  - Piezoelectric thin films: evaluation of electrical and electromechanical characteristics for MEMS devices  / Prume, K. ; Muralt, P. ; Calame, F. ; Schmitz-Kempen, T. ; Tiedke, S. ;
JF  - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 54 (2007), H. 1
Y1  - 2007
SN  - 0885-3010
SP  - 81
EP  - 14
ER  - 
TY  - JOUR
A1  - Prume, Klaus
A1  - Tyholdt, Frode
A1  - Calame, Florian
A1  - Raeder, Henrik
A1  - Muralt, Paul
T1  - Chemically derived seeding layer for {100}-textured PZT thin films   / Tyholdt, F. ; Calame, F. ; Prume, K. ; Raeder, H. ; Muralt, P.
JF  - Journal of Electroceramics. 19 (2007), H. 4
Y1  - 2007
SN  - 1385-3449
SP  - 311
EP  - 314
ER  -