TY  - CHAP
A1  - Gkatzogias, Konstantinos
A1  - Veljkoviv, Ana
A1  - Pohoryles, Daniel A.
A1  - Tsionis, Georgios
A1  - Bournas, Dionysios A.
A1  - Crowley, Helen
A1  - Norlén, Hedvig
A1  - Butenweg, Christoph
A1  - Gervasio, Helena
A1  - Manfredi, Vincenzo
A1  - Masi, Angelo
A1  - Zaharieva, Roumiana
ED  - Gkatzogias, Konstantinos
ED  - Tsionis, Georgios
T1  - Policy practice and regional impact assessment for building renovation
T2  - REEBUILD Integrated Techniques for the Seismic Strengthening & Energy Efficiency of Existing Buildings
N2  - The work presented in this report provides scientific support to building renovation policies in the EU by promoting a holistic point of view on the topic. Integrated renovation can be seen as a nexus between European policies on disaster resilience, energy efficiency and circularity in the building sector. An overview of policy measures for the seismic and energy upgrading of buildings across EU Member States identified only a few available measures for combined upgrading. Regulatory framework, financial instruments and digital tools similar to those for energy renovation, together with awareness and training may promote integrated renovation. A framework for regional prioritisation of building renovation was put forward, considering seismic risk, energy efficiency, and socioeconomic vulnerability independently and in an integrated way. Results indicate that prioritisation of building renovation is a multidimensional problem. Depending on priorities, different integrated indicators should be used to inform policies and accomplish the highest relative or most spread impact across different sectors. The framework was further extended to assess the impact of renovation scenarios across the EU with a focus on priority regions. Integrated renovation can provide a risk-proofed, sustainable, and inclusive built environment, presenting an economic benefit in the order of magnitude of the highest benefit among the separate interventions. Furthermore, it presents the unique capability of reducing fatalities and energy consumption at the same time and, depending on the scenario, to a greater extent.
Y1  - 2022
SN  - 978-92-76-60454-9
U6  - https://doi.org/10.2760/883122
SN  - 1831-9424
SP  - 1
EP  - 68
PB  - Publications Office of the European Union
CY  - Luxembourg
ER  - 
TY  - JOUR
A1  - Stadler, Andreas M.
A1  - Garvey, G. J.
A1  - Bocahut, A.
A1  - Sacquin-Mora, S.
A1  - Digel, Ilya
A1  - Schneider, G. J.
A1  - Natali, F.
A1  - Artmann, Gerhard
A1  - Zaccai, G.
T1  - Thermal fluctuations of haemoglobin from different species : adaptation to temperature via conformational dynamics
JF  - Journal of the Royal Society Interface
N2  - Thermodynamic stability, configurational motions and internal forces of haemoglobin (Hb) of three endotherms (platypus, Ornithorhynchus anatinus; domestic chicken, Gallus gallus domesticus and human, Homo sapiens) and an ectotherm (salt water crocodile, Crocodylus porosus) were investigated using circular dichroism, incoherent elastic neutron scattering and coarse-grained Brownian dynamics simulations. The experimental results from Hb solutions revealed a direct correlation between protein resilience, melting temperature and average body temperature of the different species on the 0.1 ns time scale. Molecular forces appeared to be adapted to permit conformational fluctuations with a root mean square displacement close to 1.2 Å at the corresponding average body temperature of the endotherms. Strong forces within crocodile Hb maintain the amplitudes of motion within a narrow limit over the entire temperature range in which the animal lives. In fully hydrated powder samples of human and chicken, Hb mean square displacements and effective force constants on the 1 ns time scale showed no differences over the whole temperature range from 10 to 300 K, in contrast to the solution case. A complementary result of the study, therefore, is that one hydration layer is not sufficient to activate all conformational fluctuations of Hb in the pico- to nanosecond time scale which might be relevant for biological function. Coarse-grained Brownian dynamics simulations permitted to explore residue-specific effects. They indicated that temperature sensing of human and chicken Hb occurs mainly at residues lining internal cavities in the β-subunits.
Y1  - 2012
U6  - https://doi.org/10.1098/rsif.2012.0364
SN  - 1742-5689
VL  - 9
IS  - 76
SP  - 2845
EP  - 2855
PB  - The Royal Society
CY  - London
ER  - 
TY  - JOUR
A1  - Rossi, Leonardo
A1  - Holtschoppen, Britta
A1  - Butenweg, Christoph
T1  - Official data on the economic consequences of the 2012 Emilia-Romagna earthquake: a first analysis of database SFINGE
JF  - Bulletin of Earthquake Engineering
Y1  - 2019
U6  - https://doi.org/10.1007%2Fs10518-019-00655-8
VL  - 17
IS  - 9
SP  - 4855
EP  - 4884
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Dachwald, Bernd
A1  - Wurm, P.
T1  - Mission analysis for an advanced solar photon thruster
T2  - 60th International Astronautical Congress 2009, IAC 2009
N2  - The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), is a solar sail design concept, for which the two basic functions of the solar sail, namely light collection and thrust direction, are uncoupled. In this paper, we introduce a novel SPT concept, termed the Advanced Solar Photon Thruster (ASPT). This model does not suffer from the simplified assumptions that have been made for the analysis of compound solar sails in previous studies. We present the equations that describe the force, which acts on the ASPT. After a detailed design analysis, the performance of the ASPT with respect to the conventional flat solar sail (FSS) is investigated for three interplanetary mission scenarios: An Earth-Venus rendezvous, where the solar sail has to spiral towards the Sun, an Earth-Mars rendezvous, where the solar sail has to spiral away from the Sun, and an Earth-NEA rendezvous (to near-Earth asteroid 1996FG3), where a large orbital eccentricity change is required. The investigated solar sails have realistic near-term characteristic accelerations between 0.1 and 0.2mm/s2. Our results show that a SPT is not superior to the flat solar sail unless very idealistic assumptions are made.
KW  - Interplanetary flight
Y1  - 2009
SN  - 978-161567908-9
N1  - 60th International Astronautical Congress 2009, IAC 2009; Daejeon; South Korea; 12 October 2009 through 16 October 2009
VL  - 8
SP  - 6838
EP  - 6851
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Thoma, Andreas
A1  - Fisher, Alex
A1  - Braun, Carsten
T1  - Improving the px4 avoid algorithm by bio-inspired flight strategies
T2  - DLRK2020 - „Luft- und Raumfahrt – Verantwortung in allen Dimensionen“
Y1  - 2020
U6  - https://doi.org/10.25967/530183
N1  - Deutscher Luft- und Raumfahrtkongress 2020, 1. bis 3. September 2020 – Online, „Luft- und Raumfahrt – Verantwortung in allen Dimensionen“
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
T1  - Optimal Solar Sail Trajectories for Missions to the Outer Solar System
JF  - Journal of guidance, control, and dynamics. 28 (2005), H. 6
Y1  - 2005
SN  - 0162-3192
N1  - 2. ISSN: 0162-3192. - 3. ISSN: 0731-5090
SP  - 1187
EP  - 1193
ER  - 
TY  - JOUR
A1  - Thomessen, Karolin
A1  - Thoma, Andreas
A1  - Braun, Carsten
T1  - Bio-inspired altitude changing extension to the 3DVFH* local obstacle avoidance algorithm
JF  - CEAS Aeronautical Journal
N2  - Obstacle avoidance is critical for unmanned aerial vehicles (UAVs) operating autonomously. Obstacle avoidance algorithms either rely on global environment data or local sensor data. Local path planners react to unforeseen objects and plan purely on local sensor information. Similarly, animals need to find feasible paths based on local information about their surroundings. Therefore, their behavior is a valuable source of inspiration for path planning. Bumblebees tend to fly vertically over far-away obstacles and horizontally around close ones, implying two zones for different flight strategies depending on the distance to obstacles. This work enhances the local path planner 3DVFH* with this bio-inspired strategy. The algorithm alters the goal-driven function of the 3DVFH* to climb-preferring if obstacles are far away. Prior experiments with bumblebees led to two definitions of flight zone limits depending on the distance to obstacles, leading to two algorithm variants. Both variants reduce the probability of not reaching the goal of a 3DVFH* implementation in Matlab/Simulink. The best variant, 3DVFH*b-b, reduces this probability from 70.7 to 18.6% in city-like worlds using a strong vertical evasion strategy. Energy consumption is higher, and flight paths are longer compared to the algorithm version with pronounced horizontal evasion tendency. A parameter study analyzes the effect of different weighting factors in the cost function. The best parameter combination shows a failure probability of 6.9% in city-like worlds and reduces energy consumption by 28%. Our findings demonstrate the potential of bio-inspired approaches for improving the performance of local path planning algorithms for UAV.
KW  - UAV
KW  - Obstacle avoidance
KW  - Autonomy
KW  - Local path planning
Y1  - 2023
U6  - https://doi.org/10.1007/s13272-023-00691-w
SN  - 1869-5590 (Online)
SN  - 1869-5582 (Print)
N1  - Corresponding author: Karolin Thomessen
PB  - Springer
CY  - Wien
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
T1  - Optimization of very-low-thrust trajectories using evolutionary neurocontrol
JF  - Acta Astronautica. 57 (2005), H. 2-8
Y1  - 2005
SN  - 0094-5765
SP  - 175
EP  - 185
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
T1  - Solar Sails — Propellantless Propulsion for Near- and Medium-Term Deep-Space Missions  / W. Seboldt ; B. Dachwald
JF  - Advanced Propulsion Systems and Technologies, Today to 2020 / Claudio Bruno (ed.) ... - (Progress in Astronautics and Aeronautics Series ; 223)
Y1  - 2008
SN  - 978-1-56347-929-8
N1  - ISBN 10: 1-56347-929-X  ; American Institute of Aeronautics and Astronautics <New York, NY>
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Möhren, Felix
A1  - Bergmann, Ole
A1  - Janser, Frank
A1  - Braun, Carsten
T1  - On the influence of elasticity on propeller performance: a parametric study
JF  - CEAS Aeronautical Journal
N2  - The aerodynamic performance of propellers strongly depends on their geometry and, consequently, on aeroelastic deformations. Knowledge of the extent of the impact is crucial for overall aircraft performance. An integrated simulation environment for steady aeroelastic propeller simulations is presented. The simulation environment is applied to determine the impact of elastic deformations on the aerodynamic propeller performance. The aerodynamic module includes a blade element momentum approach to calculate aerodynamic loads. The structural module is based on finite beam elements, according to Timoshenko theory, including moderate deflections. Several fixed-pitch propellers with thin-walled cross sections made of both isotropic and non-isotropic materials are investigated. The essential parameters are varied: diameter, disc loading, sweep, material, rotational, and flight velocity. The relative change of thrust between rigid and elastic blades quantifies the impact of propeller elasticity. Swept propellers of large diameters or low disc loadings can decrease the thrust significantly. High flight velocities and low material stiffness amplify this tendency. Performance calculations without consideration of propeller elasticity can lead to decreased efficiency. To avoid cost- and time-intense redesigns, propeller elasticity should be considered for swept planforms and low disc loadings.
KW  - Propeller
KW  - Finite element method
KW  - Blade element method
KW  - Propeller elasticity
KW  - Aeroelasticity
Y1  - 2023
U6  - https://doi.org/10.1007/s13272-023-00649-y
SN  - 1869-5590 (Online)
SN  - 1869-5582 (Print)
N1  - Corresponding author: Felix Möhren
VL  - 14
SP  - 311
EP  - 323
PB  - Springer Nature
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Savitskaya, I. S.
A1  - Kistaubayeva, A. S.
A1  - Digel, Ilya
A1  - Shokatayeva, D. H.
T1  - Physicochemical and Antibacterial Properties of Composite Films Based on Bacterial Cellulose and Chitosan for Wound Dressing Materials
JF  - Eurasian Chemico-Technological Journal
Y1  - 2017
U6  - https://doi.org/10.18321/ectj670
SN  - 2522-4867
VL  - 19
IS  - 3
SP  - 255
EP  - 264
ER  - 
TY  - CHAP
A1  - Becker, Jörg
A1  - Bergener, Philipp
A1  - Delfmann, Patrick
A1  - Eggert, Mathias
A1  - Weiss, Burkhard
T1  - Supporting Business Process Compliance in Financial Institutions - A Model-Driven Approach
T2  - Proceedings of the 10th International Conference on Wirtschaftsinformatik : 16 - 18 February 2011, Zurich, Switzerland
Y1  - 2011
N1  - Wirtschaftsinformatik Proceedings 2011. 75.
SP  - 355
EP  - 364
ER  - 
TY  - CHAP
A1  - Dachwald, Bernd
A1  - Xu, Changsheng
A1  - Feldmann, Marco
A1  - Plescher, Engelbert
A1  - Digel, Ilya
A1  - Artmann, Gerhard
T1  - Development and testing of a subsurface probe for detection of life in deep ice : [abstract]
N2  - We present the novel concept of a combined drilling and melting probe for subsurface ice research. This probe, named “IceMole”, is currently developed, built, and tested at the FH Aachen University of Applied Sciences’ Astronautical Laboratory. Here, we describe its first prototype design and report the results of its field tests on the Swiss Morteratsch glacier. Although the IceMole design is currently adapted to terrestrial glaciers and ice shields, it may later be modified for the subsurface in-situ investigation of extraterrestrial ice, e.g., on Mars, Europa, and Enceladus. If life exists on those bodies, it may be present in the ice (as life can also be found in the deep ice of Earth).
KW  - Eisschicht
KW  - Sonde
KW  - subsurface probe
KW  - subsurface ice research
Y1  - 2011
ER  - 
TY  - JOUR
A1  - Molinnus, Denise
A1  - Muschallik, Lukas
A1  - Gonzalez, Laura Osorio
A1  - Bongaerts, Johannes
A1  - Wagner, Torsten
A1  - Selmer, Thorsten
A1  - Siegert, Petra
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Development and characterization of a field-effect biosensor for the detection of acetoin
JF  - Biosensors and Bioelectronics
N2  - A capacitive electrolyte-insulator-semiconductor (EIS) field-effect biosensor for acetoin detection has been presented for the first time. The EIS sensor consists of a layer structure of Al/p-Si/SiO₂/Ta₂O₅/enzyme acetoin reductase. The enzyme, also referred to as butane-2,3-diol dehydrogenase from B. clausii DSM 8716T, has been recently characterized. The enzyme catalyzes the (R)-specific reduction of racemic acetoin to (R,R)- and meso-butane-2,3-diol, respectively. Two different enzyme immobilization strategies (cross-linking by using glutaraldehyde and adsorption) have been studied. Typical biosensor parameters such as optimal pH working range, sensitivity, hysteresis, linear concentration range and long-term stability have been examined by means of constant-capacitance (ConCap) mode measurements. Furthermore, preliminary experiments have been successfully carried out for the detection of acetoin in diluted white wine samples.
Y1  - 2018
U6  - https://doi.org/10.1016/j.bios.2018.05.023
VL  - 115
SP  - 1
EP  - 6
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Eggert, Mathias
A1  - Kriska, Melina
T1  - Gamification for software development processes – relevant affordances and design principles
T2  - Proceedings of the 55th Hawaii International Conference on System Sciences
N2  - A Gamified Information System (GIS) implements game concepts and elements, such as affordances and game design principles to motivate people. Based on the idea to develop a GIS to increase the motivation of software developers to perform software quality tasks, the research work at hand aims at investigating relevant requirements from that target group. Therefore, 14 interviews with software development experts are conducted and analyzed. According to the results, software developers prefer the affordances points, narrative storytelling in a multiplayer and a round-based setting. Furthermore, six design principles for the development of a GIS are derived.
Y1  - 2022
SN  - 978-0-9981331-5-7
U6  - https://doi.org/10.24251/HICSS.2022.200
N1  - Hawaii International Conference on System Sciences (HICSS) 2022, 04.01.2022 – 07.01.2022
SP  - 1614
EP  - 1623
PB  - HICSS Publishing
CY  - Honolulu
ER  - 
TY  - CHAP
A1  - König, Johannes Alexander
A1  - Wolf, Martin R.
T1  - A new definition of competence developing games - and a framework to assess them
T2  - ACHI 2016 : The Ninth International Conference on Advances in Computer-Human Interactions
N2  - There are different types of games that try to make use of the motivation of a gaming situation in learning contexts. This paper introduces the new terminology ‘Competence Developing Game’ (CDG) as an umbrella term for all games with this intention. Based on this new terminology, an assessment framework has been developed and validated in scope of an empirical study. Now, all different types of CDGs can be evaluated according to a defined and uniform set of assessment criteria and, thus, are comparable according to their characteristics and effectiveness.
KW  - Serious Games
KW  - Gamification
KW  - Business Simulations
KW  - Assessment
Y1  - 2016
SN  - 978-1-61208-468-8
N1  - Proceeding of the Ninth International Conference on Advances in Computer-Human Interactions (ACHI 2016), Venice.
SP  - 95
EP  - 97
ER  - 
TY  - CHAP
A1  - König, Johannes Alexander
A1  - Völker, Veronika
A1  - Wolf, Martin R.
T1  - The user-focused storybuilding framework for competence developing games - a design-framework considering the basics of an educational game’s story
T2  - ACHI 2018 : The Eleventh International Conference on Advances in Computer-Human Interactions
N2  - During the development of a Competence Developing Game’s (CDG) story it is indispensable to understand the target audience. Thereby, CDGs stories represent more than just the plot. The Story is about the
Setting, the Characters and the Plot. As a toolkit to support the
development of such a story, this paper introduces the UserFocused Storybuilding (short UFoS) Framework for CDGs. The Framework and its utilization will be explained, followed by a description of its development and derivation, including an empirical study. In addition, to simplify the Framework use regarding the CDG’s target audience, a new concept of Nine Psychographic Player Types will be explained. This concept of Player Types provides an approach to handle the differences in between players during the UFoS Framework use. Thereby,
this article presents a unique approach to the development of
target group-differentiated CDGs stories.
KW  - Competence Developing Game
KW  - Serious Game
KW  - Video Game
KW  - Story
KW  - Player Types
Y1  - 2018
SN  - 978-1-61208-616-3
N1  - Proceeding of the Eleventh International Conference on Advances in Computer-Human Interactions (ACHI 2018), Rome, Italy.
SP  - 98
EP  - 106
ER  - 
TY  - CHAP
A1  - Eggert, Mathias
A1  - Stanke, Max-Alexander
T1  - Adoption of Integrated Voice Assistants in Health Care– Requirements and Design Guidelines
N2  - Integrated voice assistants (IVA) receive more and more attention and are widespread for entertainment use cases, such as radio hearing or web searches. At the same time, the health care segment suffers in process inefficiency and missing staff, whereas the usage of IVA has the potential to improve caring processes and patient satisfaction. By applying a design science approach and based on a qualitative study, we identify IVA requirements, barriers and design guidelines for the health care sector. The results reveal three important IVA functions: the ability to set appointments with care service staff, the documentation of health history and the communication with service staff. Integration, system stability and volume control are the most important nonfunctional requirements. Based on the interview results and project experiences, six design and implementation guidelines are derived.
Y1  - 2020
U6  - https://doi.org/10.30844/wi_2020_k2-eggert
N1  - 15. Internationale Tagung zur Wirtschaftsinformatik, 09. – 11.03.2020, Potsdam
PB  - GITO
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Ohndorf, A.
T1  - 1st ACT Global Trajectory Optimisation Competition : Results found at DLR
JF  - Acta Astronautica. 61 (2007), H. 9
Y1  - 2007
SN  - 0094-5765
N1  - Global Trajectory Optimization ;  Results of the First Competition Organised by the Advanced Concept Team (ACT) of the European Space Agency (ESA)
SP  - 742
EP  - 752
ER  - 
TY  - JOUR
A1  - Götten, Falk
A1  - Havermann, Marc
A1  - Braun, Carsten
A1  - Marino, Matthew
A1  - Bil, Cees
T1  - Wind-tunnel and CFD investigations of UAV landing gears and turrets – Improvements in empirical drag estimation
JF  - Aerospace Science and Technology
N2  - This paper analyzes the drag characteristics of several landing gear and turret configurations that are representative of unmanned aircraft tricycle landing gears and sensor turrets. A variety of these components were constructed via 3D-printing and analyzed in a wind-tunnel measurement campaign. Both turrets and landing gears were attached to a modular fuselage that supported both isolated components and multiple components at a time. Selected cases were numerically investigated with a Reynolds-averaged Navier-Stokes approach that showed good accuracy when compared to wind-tunnel data. The drag of main gear struts could be significantly reduced via streamlining their cross-sectional shape and keeping load carrying capabilities similar. The attachment of wheels introduced interference effects that increased strut drag moderately but significantly increased wheel drag compared to isolated cases. Very similar behavior was identified for front landing gears. The drag of an electro-optical and infrared sensor turret was found to be much higher than compared to available data of a clean hemisphere-cylinder combination. This turret drag was merely influenced by geometrical features like sensor surfaces and the rotational mechanism. The new data of this study is used to develop simple drag estimation recommendations for main and front landing gear struts and wheels as well as sensor turrets. These recommendations take geometrical considerations and interference effects into account.
Y1  - 2020
U6  - https://doi.org/10.1016/j.ast.2020.106306
SN  - 1270-9638
VL  - 107
IS  - Art. 106306
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Peloni, A.
A1  - Ceriotti, M.
A1  - Dachwald, Bernd
T1  - Preliminary trajectory design of a multiple NEO rendezvous mission through solar sailing
T2  - Proceedings of the International Astronautical Congress, IAC, Vol. 8, 2014
Y1  - 2015
SN  - 978-1-63439-986-9
SP  - 5352
EP  - 5366
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
T1  - Groupware related task design
JF  - ACM SIGGROUP Bulletin. 21 (2000), H. 2
Y1  - 2000
SP  - 5
EP  - 8
PB  - -
ER  - 
TY  - CHAP
A1  - Mansurov, Zulkhair
A1  - Zhubanova, Azhar A.
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
A1  - Savitskaja, Irina S.
A1  - Kozhalakova, A. A.
A1  - Kistaubaeva, Aida S.
T1  - The sorption of LPS toxic shock by nanoparticles on base of carbonized vegetable raw materials
N2  - Immobilization of lactobacillus on high temperature carbonizated vegetable raw material (rice husk, grape stones) increases their physiological activity and the quantity of the antibacterial metabolits, that consequently lead to increase of the antagonistic activity of lactobacillus. It is implies that the use of the nanosorbents for the attachment of the probiotical microorganisms are highly perspective for decision the important problems, such as the probiotical preparations delivery to the right address and their attachment to intestines mucosa with the following detoxication of gastro-intestinal tract and the normalization of it’s microecology. Besides that, thus, the received carbonizated nanoparticles have peculiar properties – ability to sorption of LPS toxical shock and, hence, to the detoxication of LPS.
KW  - Kohlenstofffaser
KW  - Lipopolysaccharide
KW  - nanostrukturierte carbonisierte Pflanzenteile
KW  - lipopolysaccharides
KW  - nanostructured carbonized plant parts
Y1  - 2008
ER  - 
TY  - CHAP
A1  - Dachwald, Bernd
A1  - Mikucki, Jill A.
A1  - Tulaczyk, Slawek
A1  - Digel, Ilya
A1  - Feldmann, Marco
A1  - Espe, Clemens
A1  - Plescher, Engelbert
A1  - Xu, Changsheng
T1  - IceMole - a maneuverable probe for clean in-situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems : extended abstract / SCAR Open Science Conference 2012, Session 29: Advancing Clean Technologies for Exploration of Glacial Aquatic Ecosystems
N2  - The ”IceMole“ is a novel maneuverable subsurface ice probe for clean in-situ analysis and sampling of subsurface ice and subglacial water/brine. It is developed and build at FH Aachen University of Applied Sciences’ Astronautical Laboratory. A first prototype was successfully tested on the Swiss Morteratsch glacier in 2010. Clean sampling is achieved with a hollow ice screw (as it is used in mountaineering) at the tip of the probe. Maneuverability is achieved with a differentially heated melting head. Funded by the German Space Agency (DLR), a consortium led by FH Aachen currently develops a much more advanced IceMole probe, which includes a sophisticated system for obstacle avoidance, target detection, and navigation in the ice. We intend to use this probe for taking clean samples of subglacial brine at the Blood Falls (McMurdo Dry Valleys, East Antarctica) for chemical and microbiological analysis. In our conference contribution, we 1) describe the IceMole design, 2) report the results of the field tests of the first prototype on the Morteratsch glacier, 3) discuss the probe’s potential for the clean in-situ analysis and sampling of subsurface ice and subglacial liquids, and 4) outline the way ahead in the development of this technology.
KW  - Eisschicht
KW  - Sonde
KW  - subsurface ice
KW  - subglacial aquatic ecosystems
Y1  - 2012
ER  - 
TY  - CHAP
A1  - Kapoor, Hrshi
A1  - Braun, Carsten
A1  - Boller, Christian
ED  - Casciati, Fabio
T1  - Modelling and optimisation of maintenance intervals to realize structural health monitoring applications on aircraft
T2  - Structural health monitoring 2010 : proceedings of the Fifth European Workshop on Structural Health Monitoring held at Sorrento, Naples, Italy, June 28 - July 4, 2010 ; [EWSHM]
Y1  - 2010
SN  - 978-1-60595-024-2
SP  - 55
EP  - 63
PB  - DEStech Publ.
CY  - Lancaster, Pa.
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
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - golog.lua: Towards a Non-Prolog Implementation of Golog for Embedded Systems
JF  - Cognitive Robotics / Lakemeyer, Gerhard (ed.)
Y1  - 2010
N1  - Dagstuhl Seminar Proceedings ; 10081
SP  - 1
EP  - 15
ER  - 
TY  - CHAP
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
A1  - Nojima, H.
A1  - Artmann, Gerhard
T1  - Effects of plasma generated ions on bacteria : [poster]
N2  - Summary and Conclusions PCIs were clearly effective in terms of their antibacterial effects with the strains tested. This efficacy increased with the time the bacteries were exposed to PCIs. The bactericidal action has proved to be irreversible. PCIs were significantly less effective in shadowed areas. PCI exposure caused multiple protein damages as observed in SDS PAGE studies. There was no single but multiple molecular mechanism causing the bacterial death.
KW  - Clusterion
KW  - Bakterien
KW  - plasma generated ions
Y1  - 2003
ER  - 
TY  - CHAP
A1  - Gellert, Christoph
A1  - Norda, Hannah
A1  - Butenweg, Christoph
T1  - Nonlinear behaviour of masonry under cyclic loading
T2  - 7th European Conference on Structural Dynamics, EURODYN 2008 : 7-9 July 2008, Southampton
Y1  - 2008
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Kleemann, Anne
A1  - Altay, Okyay
A1  - Renault, Philippe
T1  - Simulation of impact-loads on reinforced concrete structural elements
T2  - 22nd International Conference on Structural Mechanics in Reactor Technology 2013 : (SMiRT 22) ; San Francisco, California, USA, 18 - 23 August 2013
Y1  - 2013
SP  - 1
EP  - 10
ER  - 
TY  - CHAP
A1  - Grundmann, Jan Thimo
A1  - Bauer, Waldemar
A1  - Biele, Jens
A1  - Boden, Ralf
A1  - Ceriotti, Matteo
A1  - Cordero, Federico
A1  - Dachwald, Bernd
A1  - Dumont, Etienne
A1  - Grimm, Christian D.
A1  - Herčík, David
A1  - Ho, Tra-Mi
A1  - Jahnke, Rico
A1  - Koch, Aaron D
A1  - Koncz, Alexander
A1  - Krause, Christian
A1  - Lange, Caroline
A1  - Lichtenheldt, Roy
A1  - Maiwald, Volker
A1  - Mikschl, Tobias
A1  - Mikulz, Eugen
A1  - Montenegro, Sergio
A1  - Pelivan, Ivanka
A1  - Peloni, Alessandro
A1  - Quantius, Dominik
A1  - Reershemius, Siebo
A1  - Renger, Thomas
A1  - Riemann, Johannes
A1  - Ruffer, Michael
A1  - Sasaki, Kaname
A1  - Schmitz, Nicole
A1  - Seboldt, Wolfgang
A1  - Seefeldt, Patric
A1  - Spietz, Peter
A1  - Spröwitz, Tom
A1  - Sznajder, Maciej
A1  - Tardivel, Simon
A1  - Tóth, Norbert
A1  - Wejmo, Elisabet
A1  - Wolff, Friederike
A1  - Ziach, Christian
T1  - Small spacecraft based multiple near-earth asteroid rendezvous and landing with near-term solar sails and ‘Now-Term ‘technologies
T2  - 69 th International Astronautical Congress (IAC)
N2  - Physical interaction with small solar system bodies (SSSB) is the next step in planetary science, planetary in-situ resource utilization (ISRU), and planetary defense (PD). It requires a broader understanding of the surface properties of the target objects, with particular interest focused on those near Earth. Knowledge of composition, multi-scale surface structure, thermal response, and interior structure is required to design, validate and operate missions addressing these three fields. The current level of understanding is occasionally simplified into the phrase, ”If you’ve seen one asteroid, you’ve seen one asteroid”, meaning that the in-situ characterization of SSSBs has yet to cross the threshold towards a robust and stable scheme of classification. This would enable generic features in spacecraft design, particularly for ISRU and science missions. Currently, it is necessary to characterize any potential target object sufficiently by a dedicated pre-cursor mission to design the mission which then interacts with the object in a complex fashion. To open up strategic approaches, much broader in-depth characterization of potential target objects would be highly desirable. In SSSB science missions, MASCOT-like nano-landers and instrument carriers which integrate at the instrument level to their mothership have met interest. By its size, MASCOT is compatible with small interplanetary missions. The DLR-ESTEC Gossamer Roadmap Science Working Groups‘ studies identified Multiple Near-Earth asteroid (NEA) Rendezvous (MNR) as one of the space science missions only feasible with solar sail propulsion. The Solar Polar Orbiter (SPO) study showed the ability to access any inclination, theDisplaced-L1 (DL1) mission operates close to Earth, where objects of interest to PD and for ISRU reside. Other studies outline the unique capability of solar sails to provide access to all SSSB, at least within the orbit of Jupiter, and significant progress has been made to explore the performance envelope of near-term solar sails for MNR. However, it is difficult for
sailcraft to interact physically with a SSSB. We expand and extend the philosophy of the recently qualified DLR Gossamer solar sail deployment technology using efficient multiple sub-spacecraft integration to also include landers for one-way in-situ investigations and sample-return missions by synergetic integration and operation of sail and lander. The MASCOT design concept and its characteristic features have created an ideal counterpart for thisand has already been adapted to the needs of the AIM spacecraft, former part of the NASA-ESA AIDA missionDesigning the 69th International Astronautical Congress (IAC), Bremen, Germany, 1-5 October 2018. IAC-18-F1.2.3 Page 2 of 17 combined spacecraft for piggy-back launch accommodation enables low-cost massively parallel access to the NEA population.
KW  - multiple NEA rendezvous
KW  - solar sail
KW  - GOSSAMER-1
KW  - MASCOT
KW  - small spacecraft
Y1  - 2018
N1  - 69th International Astronautical Congress (IAC), Bremen, Germany, 1-5 October 2018.
https://www.bho-legal.com/1-5-october-2018-69th-international-astronautical-congress-2018-in-bremen-germany/
SP  - 1
EP  - 18
ER  - 
TY  - JOUR
A1  - Hein, Andreas M.
A1  - Eubanks, T. Marshall
A1  - Lingam, Manasvi
A1  - Hibberd, Adam
A1  - Fries, Dan
A1  - Schneider, Jean
A1  - Kervella, Pierre
A1  - Kennedy, Robert
A1  - Perakis, Nikolaos
A1  - Dachwald, Bernd
T1  - Interstellar now! Missions to explore nearby interstellar objects
JF  - Advances in Space Research
N2  - The recently discovered first hyperbolic objects passing through the Solar System, 1I/’Oumuamua and 2I/Borisov, have raised the question about near term missions to Interstellar Objects. In situ spacecraft exploration of these objects will allow the direct determination of both their structure and their chemical and isotopic composition, enabling an entirely new way of studying small bodies from outside our solar system. In this paper, we map various Interstellar Object classes to mission types, demonstrating that missions to a range of Interstellar Object classes are feasible, using existing or near-term technology. We describe flyby, rendezvous and sample return missions to interstellar objects, showing various ways to explore these bodies characterizing their surface, dynamics, structure and composition. Their direct exploration will constrain their formation and history, situating them within the dynamical and chemical evolution of the Galaxy. These mission types also provide the opportunity to explore solar system bodies and perform measurements in the far outer solar system.
KW  - Interstellar objects
KW  - Trajectories
KW  - Missions
Y1  - 2022
U6  - https://doi.org/10.1016/j.asr.2021.06.052
SN  - 0273-1177
VL  - 69
IS  - 1
SP  - 402
EP  - 414
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Kubalski, Thomas
A1  - Butenweg, Christoph
ED  - Klinkel, Sven
ED  - Butenweg, Christoph
ED  - Lin, Gao
ED  - Holtschoppen, Britta
T1  - Seismic isolation of cylindrical liquid storage tanks
T2  - Seismic design of industrial facilities
N2  - Seismic excited liquid filled tanks are subjected to extreme loading due to hydrodynamic pressures, which can lead to nonlinear stability failure of the thinwalled cylindrical tanks, as it is known from past earthquakes. A significant reduction of the seismically induced loads can be obtained by the application of base isolation systems, which have to be designed carefully with respect to the modified hydrodynamic behaviour of the tank in interaction with the liquid. For this reason a highly sophisticated fluid-structure interaction model has to be applied for a realistic simulation of the overall dynamic system. In the following, such a model is presented and compared with the results of simplified mathematical models for rigidly supported tanks. Finally, it is examined to what extent a simple mechanical model can represent the behaviour of a base isolated tank in case of seismic excitation
Y1  - 2013
SN  - 978-3-658-02810-7
SN  - 978-3-658-02809-1
SN  - 978-3-658-14037-3
U6  - https://doi.org/10.1007/978-3-658-02810-7_36
N1  - International Conference on Seismic Design of Industrial Facilities, Aachen, Germany, 26.-27.09.2013.
https://sedif-conference.jimdofree.com/
SP  - 429
EP  - 440
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Ball, Andrew J.
A1  - Ulamec, Stephan
A1  - Price, Michael E.
T1  - A small mission for in situ exploration of a primitive binary near-Earth asteroid  / Ball, Andrew J. ; Ulamec, Stephan ; Dachwald, Bernd ; Price, Michael E. ; [u.a.]
JF  - Advances in Space Research. 43 (2009), H. 2
Y1  - 2009
SN  - 0273-1177
SP  - 317
EP  - 324
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Kob, Malte
A1  - Gömmel, Andreas
A1  - Butenweg, Christoph
A1  - Niendorf, Thoralf
T1  - Training of a combined model of larynx and vocal folds with data from MRI measurements
T2  - The 5th International Conference on Voice Physiology and Biomechanics: Variations across Cultures and Species, July 12-14, 2006, Tokyo, Japan. Proceedings
Y1  - 2006
SP  - 45
EP  - 46
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Kuhlmann, Winfried
A1  - Lopez, M.
A1  - Fernandez, S.
T1  - Seismic vulnerability assessment of the Aachen Cathedral based on measurements and numerical simulations
T2  - International Conference on Earthquake Engineering to mark 40 years from Catastrophic 1963 Skopje Earthquake, Skopje 2003
Y1  - 2003
SP  - 1
EP  - 8
ER  - 
TY  - JOUR
A1  - Akimbekov, Nuraly S.
A1  - Digel, Ilya
A1  - Zhubanova, A. A.
T1  - Investigation the Influence of Carbonized Material Based On Rice Husk on Viability and Migration of Fibroblasts in T3B3 Cell Culture
JF  - KazNU Bulletin. Biology series
Y1  - 2013
SN  - 1563-0218
N1  - Original in russischer Sprache
VL  - 59
IS  - 3/1
SP  - 20
EP  - 23
ER  - 
TY  - CHAP
A1  - Wagner, R.
A1  - Noh, S.-Y.
A1  - Butenweg, Christoph
A1  - Meskouris, Konstantin
T1  - Seismic excited granular material silos
T2  - Structural dynamics - EURODYN 2002 : proceedings of the 4th [i.e. 5th] International Conference on Structural Dynamics, Munich, Germany, 2 - 5 September 2002 / ed. by H. Grundmann ...
Y1  - 2002
SN  - 90-5809-511-8
SP  - 253
EP  - 258
PB  - Balkema
CY  - Lisse
ER  - 
TY  - CHAP
A1  - Meskouris, Konstantin
A1  - Holtschoppen, Britta
A1  - Butenweg, Christoph
A1  - Rosin, Julia
T1  - Seismic analysis of liquid storage tanks
T2  - Earthquake Geology and Archaeology: Science, Society and Critical facilities : proceedings ; 2nd INQUA-IGCP 567 International Workshop on Active Tectonics, Earthquake Geology, Archaeology and Engineering ; 19-24 September 2011, Corinth (Greece) / Eds.: C. Grützner ; R. Pérez-Lopez ; T. Fernández Steeger ; I. Papanikolaou ; K. Reicherter ; P. G. Silva ; A. Vött. Volume 2
Y1  - 2011
SN  - 978-960-466-093-3
SP  - 136
EP  - 139
PB  - The Natural hazards Laboratory, National and Kapodistrian University of Athens
CY  - Athens
ER  - 
TY  - CHAP
A1  - Reindl, Lukas
A1  - Butenweg, Christoph
A1  - Kubalski, Thomas
T1  - Numerical simulation of unreinforced masonry walls subject to dynamic out-of-plane loading
T2  - COMPDYN 2011 : ECCOMAS Thematic Conference ; Proceedings of the 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering ; 25-28 May, 2011, Corfu, Greece / Eds.: M. Papadrakakis ...
Y1  - 2011
SN  - 978-960-99994-0-3
SP  - 1
EP  - 10
PB  - National Technical Univ. of Athens
CY  - Athen
ER  - 
TY  - CHAP
A1  - Park, Jin
A1  - El-Daib, Khaled
A1  - Butenweg, Christoph
A1  - Gellert, Christoph
T1  - A novel macroelement approach for masonry walls
T2  - Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011 : Leuven, Belgium, 4 - 6 July 2011 / Katholieke Universiteit Leuven, ... G. De Roeck ... (eds)
Y1  - 2011
SN  - 978-90-76019-31-4
SP  - 3281
EP  - 3286
PB  - K. U. Leuven, Dep. of Civil Engineering
CY  - Leuven
ER  - 
TY  - CHAP
A1  - Taddei, Francesca
A1  - Reindl, Lukas
A1  - Park, Jin
A1  - Butenweg, Christoph
A1  - Karadogan, Faruk
T1  - Numerical investigation of AAC wall panels based on the damage plasticity constitutive law
T2  - Cement, Wapno, Beton ; 2011, 7, Special issue: 5th International Conference on Autoclaved Aerated Concrete 'Securing a sustainable future' to be held at Bydgoszcz to celebrate 60 years of AAC experience in Poland, Bydgoszcz, September 14-17, 2011
Y1  - 2011
SN  - 1425-8129
SP  - 86
EP  - 91
PB  - Stowarzyszenie Producentów Cementu i Wapna
CY  - Krakow
ER  - 
TY  - CHAP
A1  - Reindl, Lukas
A1  - Park, Jin
A1  - Norda, Hannah
A1  - Butenweg, Christoph
T1  - Seismic design of masonry walls subject to out-of-plane bending
T2  - Proceedings of the Tenth International Conference on Computational Structures Technology : Valencia, Spain, 14 - 17 September 2010 / organised in association with: Universidad Politecnica de Valencia ... Ed. by B. H. V. Topping ...
Y1  - 2010
SN  - 978-1-905088-36-2
U6  - https://doi.org/10.4203/ccp.93.348
SP  - Paper 348
PB  - Civil-Comp Press
CY  - Kippen
ER  - 
TY  - CHAP
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
A1  - Nojima, H.
A1  - Artmann, Gerhard
T1  - Plasma-generated cluster ions' effects on indoor microflora : [abstract]
N2  - Recently, SHARP corporation has developed the world’s first "Plasma Cluster Ions® (PCI)" air purification technology, which uses plasma discharge to generate cluster ions. The new Plasma Cluster Device releases positive and negative ions into the air, which are harmless to humans and are able to decompose and deactivate airborne substances by chemical reactions. In the past, phenomenological tests on the efficacy of the PCI air purification technology on microbial cells have been conducted. In most cases, it has been shown that PCI demonstrated strongly pronounced killing effects on microorganisms. However, the particular mechanisms of PCI action still have to be uncovered.
KW  - Clusterion
KW  - Raumluft
KW  - Luftreiniger
KW  - Plasmacluster ion technology
KW  - Air purification
Y1  - 2003
ER  - 
TY  - CHAP
A1  - Gömmel, Andreas
A1  - Krämer, Sebastian
A1  - Butenweg, Christoph
A1  - Kob, Malte
T1  - A combined FE and multiple-mass model for numerical simulation of phonatory maneuvers
T2  - Proceedings / Forum Acusticum, Budapest, 29 Aug - 2 Sep, 2005 : [Acoustics: science and technology for knowledge based society and healthy environment] / ed. by: Fülöp Augusztinovicz ...
Y1  - 2005
SN  - 978-963-8241-68-9
SP  - 2759
EP  - 2764
PB  - OPAKFI Tud. Egyesület
CY  - Budapest
ER  - 
TY  - CHAP
A1  - Gömmel, Andreas
A1  - Butenweg, Christoph
A1  - Kob, Malte
T1  - Towards a complete finite-element model of human phonation: modeling phonatory maneuvers
T2  - 12th Workshop on the Finite Element Method in Biomedical Engineering, Biomechanics and Related Fields : Ulm, Germany, 20 - 21 July 2005 / University of Ulm, Department of Orthodontics ...
Y1  - 2005
SN  - 978-3-9806183-8-0
PB  - Univ., Dep. of Orthodontics
CY  - Ulm
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Mistler, Michael
T1  - Seismic resistance of unreinforced masonry buildings
T2  - Proceedings of the Eighth International Conference on Computational Structures Technology : [Las Palmas de Cran Canaria, 12-15 September 2006] / ed. by B. H. V. Topping ...
Y1  - 2006
SN  - 1-905088-06-X
U6  - https://doi.org/10.4203/ccp.83.9
SP  - Paper 9
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Gellert, Christoph
A1  - Reindl, Lukas
T1  - Capacity design of masonry buildings under cyclic loading
T2  - Seismic Risk : Earthquakes in North-Western Europe ; international colloquium ; Liège on 11 and 12 September 2008 / Belgian Seismic Group (BeSeiG). Ed.: T. Camlebeeck ...
Y1  - 2008
SN  - 978-2-87456-063-7
SP  - 201
EP  - 208
PB  - Editions de l'Université de Liège
CY  - Liège
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Gellert, Christoph
T1  - Displacement based design of masonry structures
T2  - Proceedings of the 14th International Brick and Block Masonry Conference : (Incorporating the 8th Australasian Masonry Conference) : Sydney, Australia, 13.-20. February 2008 / ed. Mark Masia ...
Y1  - 2008
SN  - 978-19-2070-1-92-5
SP  - 1
EP  - 10
PB  - University of Newcastle
CY  - Callaghan
ER  - 
TY  - JOUR
A1  - Thoma, Andreas
A1  - Gardi, Alessandro
A1  - Fisher, Alex
A1  - Braun, Carsten
T1  - Improving local path planning for UAV flight in challenging environments by refining cost function weights
JF  - CEAS Aeronautical Journal
N2  - Unmanned Aerial Vehicles (UAV) constantly gain in versatility. However, more reliable path planning algorithms are required until full autonomous UAV operation is possible. This work investigates the algorithm 3DVFH* and analyses its dependency on its cost function weights in 2400 environments. The analysis shows that the 3DVFH* can find a suitable path in every environment. However, a particular type of environment requires a specific choice of cost function weights. For minimal failure, probability interdependencies between the weights of the cost function have to be considered. This dependency reduces the number of control parameters and simplifies the usage of the 3DVFH*. Weights for costs associated with vertical evasion (pitch cost) and vicinity to obstacles (obstacle cost) have the highest influence on the failure probability of the local path planner. Environments with mainly very tall buildings (like large American city centres) require a preference for horizontal avoidance manoeuvres (achieved with high pitch cost weights). In contrast, environments with medium-to-low buildings (like European city centres) benefit from vertical avoidance manoeuvres (achieved with low pitch cost weights). The cost of the vicinity to obstacles also plays an essential role and must be chosen adequately for the environment. Choosing these two weights ideal is sufficient to reduce the failure probability below 10%.
KW  - Bio-inspired systems
KW  - Path planning
KW  - Obstacle avoidance
KW  - Unmanned aerial vehicles
Y1  - 2024
U6  - https://doi.org/10.1007/s13272-024-00741-x
SN  - 1869-5590 (eISSN)
SN  - 1869-5582
N1  - Corresponding author: Andreas Thoma
PB  - Springer
CY  - Wien
ER  -