TY - JOUR A1 - Ketelhut, Maike A1 - Göll, Fabian A1 - Braunstein, Björn A1 - Albracht, Kirsten A1 - Abel, Dirk T1 - Comparison of different training algorithms for the leg extension training with an industrial robot JF - Current Directions in Biomedical Engineering N2 - In the past, different training scenarios have been developed and implemented on robotic research platforms, but no systematic analysis and comparison have been done so far. This paper deals with the comparison of an isokinematic (motion with constant velocity) and an isotonic (motion against constant weight) training algorithm. Both algorithms are designed for a robotic research platform consisting of a 3D force plate and a high payload industrial robot, which allows leg extension training with arbitrary six-dimensional motion trajectories. In the isokinematic as well as the isotonic training algorithm, individual paths are defined i n C artesian s pace by sufficient s upport p oses. I n t he i sotonic t raining s cenario, the trajectory is adapted to the measured force as the robot should only move along the trajectory as long as the force applied by the user exceeds a minimum threshold. In the isotonic training scenario however, the robot’s acceleration is a function of the force applied by the user. To validate these findings, a simulative experiment with a simple linear trajectory is performed. For this purpose, the same force path is applied in both training scenarios. The results illustrate that the algorithms differ in the force dependent trajectory adaption. KW - Rehabilitation Technology and Prosthetics KW - Surgical Navigation and Robotics Y1 - 2018 U6 - https://doi.org/10.1515/cdbme-2018-0005 SN - 2364-5504 VL - 4 IS - 1 SP - 17 EP - 20 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - Werkhausen, Amelie A1 - Cronin, Neil J. A1 - Albracht, Kirsten A1 - Paulsen, Gøran A1 - Larsen, Askild V. A1 - Bojsen-Møller, Jens A1 - Seynnes, Olivier R. T1 - Training-induced increase in Achilles tendon stiffness affects tendon strain pattern during running JF - PeerJ N2 - Background During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect of changes in tendon mechanical properties induced by chronic loading is still poorly understood. We tested the hypothesis that a training-induced increase in Achilles tendon stiffness would result in reduced tendon strain during the stance phase of running, which would reduce fascicle strains in the triceps surae muscles, particularly in the mono-articular soleus. Methods Eleven subjects were assigned to a training group performing isometric singleleg plantarflexion contractions three times per week for ten weeks, and another ten subjects formed a control group. Before and after the training period, Achilles tendon stiffness was estimated, and muscle-tendon mechanics were assessed during running at preferred speed using ultrasonography, kinematics and kinetics. Results Achilles tendon stiffness increased by 18% (P <0:01) in the training group, but the associated reduction in strain seen during isometric contractions was not statistically significant. Tendon elongation during the stance phase of running was similar after training, but tendon recoil was reduced by 30% (P <0:01), while estimated tendon force remained unchanged. Neither gastrocnemius medialis nor soleus fascicle shortening during stance was affected by training. Discussion These results show that a training-induced increase in Achilles tendon stiffness altered tendon behaviour during running. Despite training-induced changes in tendon mechanical properties and recoil behaviour, the data suggest that fascicle shortening patterns were preserved for the running speed that we examined. The asymmetrical changes in tendon strain patterns supports the notion that simple inseries models do not fully explain the mechanical output of the muscle-tendon unit during a complex task like running. KW - Achilles tendon KW - Stiffness KW - Running KW - Tendon properties KW - Architectural gear ratio Y1 - 2019 U6 - https://doi.org/10.7717/peerj.6764 SN - 21678359 PB - Peer CY - London ER - TY - GEN A1 - Blottner, Dieter A1 - Hastermann, Maria A1 - Muckelt, Paul A1 - Albracht, Kirsten A1 - Schoenrock, Britt A1 - Salanova, Michele A1 - Warner, Martin A1 - Gunga, Hans-Christian A1 - Stokes, Maria T1 - MYOTONES - Inflight muscle health status monitoring during long-duration space missions onboard the International Space Station: a single case study T2 - IAC Papers Archive N2 - The MYOTONES experiment is the first to monitor changes in the basic biomechanical properties (tone, elasticity and stiffness) of the resting human myofascial system due to microgravity with a oninvasive, portable device on board the ISS. The MyotonPRO device applies several brief mechanical stimuli to the surface of the skin, and the natural oscillation signals of the tissue beneath are detected and computed by the MyotonPRO. Thus, an objective, quick and easy determination of the state of the underlying tissue is possible. Two preflight, four inflight and four post flight measurements were performed on a male astronaut using the same 10 measurement points (MP) for each session. MPs were located on the plantar fascia, Achilles tendon, M. soleus, M. gastrocnemius, M. multifidus, M. splenius capitis, M. deltoideus anterior, M. rectus femoris, infrapatellar tendon, M. tibialis anterior. Subcutaneous tissues thickness above the MPs was measured using ultrasound imaging. Magnetic resonance images (MRI) of lower limb muscles and functional tests were also performed pre- and postflight. Our first measurements on board the ISS confirmed increased tone and stiffness of the lumbar multifidus muscle, an important trunk stabilizer, dysfunction of which is known to be associated with back pain. Furthermore, reduced tone and stiffness of Achilles tendon and plantar fascia were observed inflight vs. preflight, confirming previous findings from terrestrial analog studies and parabolic flights. Unexpectedly, the deltoid showed negative inflight changes in tone and stiffness, and increased elasticity, suggesting a potential risk of muscle atrophy in longer spaceflight that should be addressed by adequate inflight countermeasure protocols. Most values from limb and back MPS showed deflected patterns (in either directions) from inflight shortly after the re-entry phase on the landing day and one week later. Most parameter values then normalized to baseline after 3 weeks likely due to 1G re-adaptation and possible outcome of the reconditioning protocol. No major changes in subcutaneous tissues thickness above the MPs were found inflight vs preflight, suggesting no bias (i.e., fluid shift, extreme tissue thickening or loss). Pre- and postflight MRI and functional tests showed negligible changes in calf muscle size, power and force, which is likely due to training effects from current inflight exercise protocols. The MYOTONES experiment is currently ongoing to collect data from further crew members. The potential impact of this research is to better understand the effects of microgravity and countermeasures over the time course of an ISS mission cycle. This will enable exercise countermeasures to be tailored Y1 - 2019 SN - 00741795 N1 - International Astronautical Congress: space: the power of the past, the promise of the future - Washington DC, USA/Vereinigte Staaten von Amerika Dauer: 21.10.2019 → 25.10.2019 PB - Pergamon CY - Oxford ER - TY - JOUR A1 - Bruksle, Ieva A1 - Chwallek, Constanze A1 - Krastina, Anzelika T1 - Strengthening sustainability in entrepreneurship education - implications for shifting entrepreneurial thinking towards sustainability at universities JF - ACTA PROSPERITATIS N2 - By developing innovative solutions to social and environmental problems, sustainable ventures carry greatpotential. Entrepreneurship which focuses especially on new venture creation can be developed through education anduniversities, in particular, are called upon to provide an impetus for social change. But social innovations are associatedwith certain hurdles, which are related to the multi-dimensionality, i.e. the tension between creating social,environmental and economic value and dealing with a multiplicity of stakeholders. The already complex field ofentrepreneurship education has to face these challenges. This paper, therefore, aims to identify starting points for theintegration of sustainability into entrepreneurship education. To pursue this goal experiences from three differentproject initiatives between the partner universities: Lapland University of Applied Sciences, FH Aachen University ofApplied Sciences and Turiba University are reflected and findings are systematically condensed into recommendationsfor education on sustainable entrepreneurship. KW - climate change KW - entrepreneurship education KW - Finland KW - Germany KW - Latvia Y1 - 2023 U6 - https://doi.org/10.37804/1691-6077-2023-14-37-48 SN - 1691-6077 VL - 14 IS - 1 SP - 37 EP - 48 PB - Sciendo ER - TY - CHAP A1 - Ketelhut, Maike A1 - Göll, Fabian A1 - Braunstein, Bjoern A1 - Albracht, Kirsten A1 - Abel, Dirk T1 - Iterative learning control of an industrial robot for neuromuscular training T2 - 2019 IEEE Conference on Control Technology and Applications N2 - Effective training requires high muscle forces potentially leading to training-induced injuries. Thus, continuous monitoring and controlling of the loadings applied to the musculoskeletal system along the motion trajectory is required. In this paper, a norm-optimal iterative learning control algorithm for the robot-assisted training is developed. The algorithm aims at minimizing the external knee joint moment, which is commonly used to quantify the loading of the medial compartment. To estimate the external knee joint moment, a musculoskeletal lower extremity model is implemented in OpenSim and coupled with a model of an industrial robot and a force plate mounted at its end-effector. The algorithm is tested in simulation for patients with varus, normal and valgus alignment of the knee. The results show that the algorithm is able to minimize the external knee joint moment in all three cases and converges after less than seven iterations. KW - Knee KW - Training KW - Load modeling KW - Force KW - Iterative learning control Y1 - 2019 SN - 978-1-7281-2767-5 (ePub) SN - 978-1-7281-2766-8 (USB) SN - 978-1-7281-2768-2 (PoD) U6 - https://doi.org/10.1109/CCTA.2019.8920659 N1 - 2019 IEEE Conference on Control Technology and Applications (CCTA) Hong Kong, China, August 19-21, 2019 PB - IEEE CY - New York ER - TY - JOUR A1 - Ketelhut, Maike A1 - Kolditz, Melanie A1 - Göll, Fabian A1 - Braunstein, Bjoern A1 - Albracht, Kirsten A1 - Abel, Dirk T1 - Admittance control of an industrial robot during resistance training JF - IFAC-PapersOnLine N2 - Neuromuscular strength training of the leg extensor muscles plays an important role in the rehabilitation and prevention of age and wealth related diseases. In this paper, we focus on the design and implementation of a Cartesian admittance control scheme for isotonic training, i.e. leg extension and flexion against a predefined weight. For preliminary testing and validation of the designed algorithm an experimental research and development platform consisting of an industrial robot and a force plate mounted at its end-effector has been used. Linear, diagonal and arbitrary two-dimensional motion trajectories with different weights for the leg extension and flexion part are applied. The proposed algorithm is easily adaptable to trajectories consisting of arbitrary six-dimensional poses and allows the implementation of individualized trajectories. KW - Assistive technology KW - Rehabilitation engineering KW - Human-Computer interaction KW - Automatic control Y1 - 2019 U6 - https://doi.org/10.1016/j.ifacol.2019.12.102 SN - 2405-8963 N1 - 14th IFAC Symposium on Analysis, Design, and Evaluation of Human Machine Systems HMS 2019 Tallinn, Estonia, 16–91 September 2019 VL - 52 IS - 19 SP - 223 EP - 228 PB - Elsevier CY - Amsterdam ER - TY - BOOK A1 - Scheilen, Jana A1 - Peiffer, Max A1 - Görlich, Anna-Luisa A1 - Hacke, Theresa ED - Kroll-Ludwigs, Kathrin ED - Bassen-Metz, Yasmine ED - Bernecker, Andreas ED - Eggert, Mathias ED - Fritz, Thomas ED - Golland, Alexander ED - Höhne, Tim ED - Tran, Duc Hung ED - Vogt, Jürgen T1 - Aachener Online-Schriften Wirtschaft und Recht. Band 7. 02/2023 N2 - 1. Die Wirksamkeitsvoraussetzungen der Verdachtskündigung gegenüber einem Arbeitnehmer - Jana Scheilen | Seite 4-66 2. Besteuerungsinkongruenzen im Internationalen Steuerrecht - die Umsetzung der ATAD II in Form des § 4k EStG in Bezug auf hybride Gesellschaften und Betriebsstätten - Max Peiffer | Seite 67-126 3. Der Zuzug einer Gesellschaft aus einem Drittstaat nach Deutschland - Herausforderungen durch die modifizierte Sitztheorie und Lösungsmöglichkeiten - Anna-Luisa Görlich | Seite 127-189 4. Escalation of Commitment und seine Einflussfaktoren in der unternehmerischen Entscheidungsfindung: Ein Szenario-Experiment - Theresa Hacke | Seite 190-245 T3 - Aachener Online-Schriften Wirtschaft und Recht - 7 Y1 - 2023 PB - FH Aachen / Fachbereich Wirtschaftswissenschaften CY - Aachen ER - TY - JOUR A1 - Timme, Michael T1 - Die Erbringung einer Leistung in der irrigen Vorstellung einer Bestellung (Zu BGH, MDR 2023, 1439) JF - Monatsschrift für Deutsches Recht Y1 - 2023 U6 - https://doi.org/10.9785/mdtr-2023-772402 SN - 2194-4202 (online) SN - 0340-1812 (print) VL - 77 IS - 24 SP - R293 EP - R296 PB - Verlag Dr. Otto Schmidt CY - Köln ER - TY - JOUR A1 - Ketelhut, Maike A1 - Brügge, G. M. A1 - Göll, Fabian A1 - Braunstein, Bjoern A1 - Albracht, Kirsten A1 - Abel, Dirk T1 - Adaptive iterative learning control of an industrial robot during neuromuscular training JF - IFAC PapersOnLine N2 - To prevent the reduction of muscle mass and loss of strength coming along with the human aging process, regular training with e.g. a leg press is suitable. However, the risk of training-induced injuries requires the continuous monitoring and controlling of the forces applied to the musculoskeletal system as well as the velocity along the motion trajectory and the range of motion. In this paper, an adaptive norm-optimal iterative learning control algorithm to minimize the knee joint loadings during the leg extension training with an industrial robot is proposed. The response of the algorithm is tested in simulation for patients with varus, normal and valgus alignment of the knee and compared to the results of a higher-order iterative learning control algorithm, a robust iterative learning control and a recently proposed conventional norm-optimal iterative learning control algorithm. Although significant improvements in performance are made compared to the conventional norm-optimal iterative learning control algorithm with a small learning factor, for the developed approach as well as the robust iterative learning control algorithm small steady state errors occur. KW - Iterative learning control KW - Robotic rehabilitation KW - Adaptive control Y1 - 2020 U6 - https://doi.org/10.1016/j.ifacol.2020.12.741 SN - 2405-8963 VL - 53 IS - 2 SP - 16468 EP - 16475 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Hammer, Thorben A1 - Quitter, Julius A1 - Mayntz, Joscha A1 - Bauschat, J.-Michael A1 - Dahmann, Peter A1 - Götten, Falk A1 - Hille, Sebastian A1 - Stumpf, Eike T1 - Free fall drag estimation of small-scale multirotor unmanned aircraft systems using computational fluid dynamics and wind tunnel experiments JF - CEAS Aeronautical Journal N2 - New European Union (EU) regulations for UAS operations require an operational risk analysis, which includes an estimation of the potential danger of the UAS crashing. A key parameter for the potential ground risk is the kinetic impact energy of the UAS. The kinetic energy depends on the impact velocity of the UAS and, therefore, on the aerodynamic drag and the weight during free fall. Hence, estimating the impact energy of a UAS requires an accurate drag estimation of the UAS in that state. The paper at hand presents the aerodynamic drag estimation of small-scale multirotor UAS. Multirotor UAS of various sizes and configurations were analysed with a fully unsteady Reynolds-averaged Navier–Stokes approach. These simulations included different velocities and various fuselage pitch angles of the UAS. The results were compared against force measurements performed in a subsonic wind tunnel and provided good consistency. Furthermore, the influence of the UAS`s fuselage pitch angle as well as the influence of fixed and free spinning propellers on the aerodynamic drag was analysed. Free spinning propellers may increase the drag by up to 110%, depending on the fuselage pitch angle. Increasing the fuselage pitch angle of the UAS lowers the drag by 40% up to 85%, depending on the UAS. The data presented in this paper allow for increased accuracy of ground risk assessments. KW - Multirotor UAS KW - Drag estimation KW - CFD KW - Wind tunnel experiments KW - Wind milling Y1 - 2023 U6 - https://doi.org/10.1007/s13272-023-00702-w SN - 1869-5590 (Online) SN - 1869-5582 (Print) N1 - Corresponding author: Thorben Hammer PB - Springer CY - Wien ER - TY - JOUR A1 - Stäudle, Benjamin A1 - Seynnes, Olivier A1 - Laps, Guido A1 - Göll, Fabian A1 - Brüggemann, Gert-Peter A1 - Albracht, Kirsten T1 - Recovery from achilles tendon repair: a combination of Postsurgery Outcomes and Insufficient remodeling of muscle and tendon JF - Medicine & Science in Sports & Exercise N2 - Achilles tendon rupture (ATR) patients have persistent functional deficits in the triceps surae muscle–tendon unit (MTU). The complex remodeling of the MTU accompanying these deficits remains poorly understood. The purpose of the present study was to associate in vivo and in silico data to investigate the relations between changes inMTU properties and strength deficits inATR patients. Methods: Elevenmale subjects who had undergone surgical repair of complete unilateral ATR were examined 4.6 ± 2.0 (mean ± SD) yr after rupture. Gastrocnemius medialis (GM) tendon stiffness, morphology, and muscle architecture were determined using ultrasonography. The force–length relation of the plantar flexor muscles was assessed at five ankle joint angles. In addition, simulations (OpenSim) of the GM MTU force–length properties were performed with various iterations of MTU properties found between the unaffected and the affected side. Results: The affected side of the patients displayed a longer, larger, and stiffer GM tendon (13% ± 10%, 105% ± 28%, and 54% ± 24%, respectively) compared with the unaffected side. The GM muscle fascicles of the affected side were shorter (32% ± 12%) and with greater pennation angles (31% ± 26%). A mean deficit in plantarflexion moment of 31% ± 10% was measured. Simulations indicate that pairing an intact muscle with a longer tendon shifts the optimal angular range of peak force outside physiological angular ranges, whereas the shorter muscle fascicles and tendon stiffening seen in the affected side decrease this shift, albeit incompletely. Conclusions: These results suggest that the substantial changes in MTU properties found in ATR patients may partly result from compensatory remodeling, although this process appears insufficient to fully restore muscle function. KW - Tendon Rupture KW - Stiffness KW - Simulation KW - Muscle Force KW - Muscle Fascicle Y1 - 2021 U6 - https://doi.org/10.1249/MSS.0000000000002592 SN - 1530-0315 VL - 53 IS - 7 SP - 1356 EP - 1366 PB - American College of Sports Medicine CY - Philadelphia, Pa. ER - TY - JOUR A1 - Monti, Elena A1 - Waldvogel, Janice A1 - Ritzmann, Ramona A1 - Freyler, Kathrin A1 - Albracht, Kirsten A1 - Helm, Michael A1 - De Cesare, Niccolò A1 - Pavan, Piero A1 - Reggiani, Carlo A1 - Gollhofer, Albert A1 - Narici, Marco Vincenzo T1 - Muscle in variable gravity: “I do not know where I am, but I know what to do” JF - Frontiers in Physiology N2 - Performing tasks, such as running and jumping, requires activation of the agonist and antagonist muscles before (motor unit pre-activation) and during movement performance (Santello and Mcdonagh, 1998). A well-timed and regulated muscle activation elicits a stretch-shortening cycle (SSC) response, naturally occurring in bouncing movements (Ishikawa and Komi, 2004; Taube et al., 2012). By definition, the SSC describes the stretching of a pre-activated muscle-tendon complex immediately followed by a muscle shortening in the concentric push-off phase (Komi, 1984). Given the importance of SSC actions for human movement, it is not surprising that many studies investigated the biomechanics of this phenomenon; in particular, drop jumps (DJs) represent a good paradigm to study muscle fascicle and tendon behavior in ballistic movements involving the SSC. Within a DJ, three main phases [pre-activation, braking, and push-off (PO; Komi, 2000)] have been recognized and extensively studied in common and challenging conditions, such as changes in load, falling height, or simulated hypo-gravity (Avela et al., 1994; Arampatzis et al., 2001; Fukashiro et al., 2005; Ishikawa et al., 2005; Sousa et al., 2007; Ritzmann et al., 2016; Helm et al., 2020). These studies show that the timing and amount of triceps-surae muscle-tendon unit pre-activation in DJs are differentially regulated based on the load applied to the muscle, being optimal in normal “Earth” gravity conditions (Avela et al., 1994), but decreased in simulated hypo-gravity, hyper-gravity (Avela et al., 1994; Ritzmann et al., 2016), or unknown conditions (i.e., unknown falling heights; Helm et al., 2020). Some authors indicated that, when falling from heights different from the optimal one [defined as the drop height giving a maximum DJ performance indicated as peak ground reaction force (GRF) or jump high], electromyographic (EMG) activity of the plantar flexors increases from lower than optimal to higher than optimal heights (Ishikawa and Komi, 2004; Sousa et al., 2007). These findings highlight the ability of the central nervous system to regulate the timing and amount of pre-activation according to different jumping conditions, thus regulating muscle fascicle length, tendon and joint stiffness as well as position, in order to safely land on the ground and quickly re-bounce. Similarly, to pre-activation, also in the braking phase, the plantar flexors are differentially regulated. In optimal height (i.e., load) jumping conditions, gastrocnemius medialis (GM) fascicles shorten at early ground contact (possibly due to the intervention of the stretch reflex; Gollhofer et al., 1992) and behave quasi-isometrically in the late braking phase, enabling tendon elongation, and storage of elastic energy (Gollhofer et al., 1992; Fukashiro et al., 2005; Sousa et al., 2007). When increasing the falling height (augmenting the impact GRF), the quasi-isometric behavior of fascicles disappears, and fast fascicle lengthening occurs (Ishikawa et al., 2005; Sousa et al., 2007). In the third and last PO phase, fascicles shorten and the tendon releases the elastic energy previously stored. Bobbert et al. (1987) reported no influence of jumping height on the work done and on the net vertical impulse assessed during PO; this observation suggests that, despite an optimal DJ performance might be achieved only in specific conditions (falling heights, loads), the central nervous system seems to be able to regulate muscle behavior in order to effectively perform the required task also in challenging situations. Although the regulation of triceps-surae muscle-tendon unit in DJs has been extensively investigated, very few studies focused on sarcomeres behavior during the performance of this SSC movement (Kurokawa et al., 2003; Fukashiro et al., 2005, 2006). Sarcomeres represent muscle contractile units and are known to express different amounts of force depending on their length (Gordon et al., 1966; Walker and Schrodt, 1974); thus, understanding the time course of their responses during DJs is fundamental to gain further insights into muscle force-generating capacity. In vivo measurement of sarcomere length in humans has been so far been performed only in static positions and under highly controlled experimental conditions (Llewellyn et al., 2008; Sanchez et al., 2015). Instead, human sarcomere length estimation (achieved by dividing GM measured fascicle length for a fixed sarcomere number) in dynamic contractions provided an indirect measure of sarcomere operating range during squat jump, countermovement jump, and DJ (Fukashiro et al., 2005, 2006; Kurokawa et al., 2003). The results of these studies showed that sarcomeres operate in the ascending limb of their length-tension (L-T) relationship in all types of jumps, and particularly so in DJ. However, most of the available observations on sarcomere and muscle fascicle behavior were made in condition of constant gravity. Thus, in order to understand how sarcomere and muscle fascicle length are regulated in variable gravity conditions, we performed experiments in a parabolic flight, involving variable gravity levels, ranging from about zero-g to about double the Earth’s gravity (1 g; Waldvogel et al., 2021). Specifically, the aims of the present study were as follows: 1. To investigate the ability of the neuromuscular system in regulating fascicle length in response to conditions of variable gravity. 2. To estimate sarcomere operative length in the different DJ phases, in order to calculate its theoretical force production and its possible modulation in conditions of variable gravity. We hypothesized that muscle fascicles would be differentially regulated in different gravity conditions compared to 1 g, particularly in anticipation of landing and re-bouncing in unknown gravity levels. In addition, we hypothesized that sarcomeres would operate in the upper part of the ascending limb of their L-T relationship, possibly lengthening during the braking phase (especially in hyper-gravity) while operating quasi-isometrically in 1 g. KW - parabolic flight KW - drop jump KW - hypo-gravity KW - hyper-gravity KW - sarcomere operating length Y1 - 2021 U6 - https://doi.org/10.3389/fphys.2021.714655 SN - 1664-042X VL - 12 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Werkhausen, Amelie A1 - Willwacher, Steffen A1 - Albracht, Kirsten T1 - Medial gastrocnemius muscle fascicles shorten throughout stance during sprint acceleration JF - Scandinavian Journal of Medicine & Science in Sports N2 - The compliant nature of distal limb muscle-tendon units is traditionally considered suboptimal in explosive movements when positive joint work is required. However, during accelerative running, ankle joint net mechanical work is positive. Therefore, this study aims to investigate how plantar flexor muscle-tendon behavior is modulated during fast accelerations. Eleven female sprinters performed maximum sprint accelerations from starting blocks, while gastrocnemius muscle fascicle lengths were estimated using ultrasonography. We combined motion analysis and ground reaction force measurements to assess lower limb joint kinematics and kinetics, and to estimate gastrocnemius muscle-tendon unit length during the first two acceleration steps. Outcome variables were resampled to the stance phase and averaged across three to five trials. Relevant scalars were extracted and analyzed using one-sample and two-sample t-tests, and vector trajectories were compared using statistical parametric mapping. We found that an uncoupling of muscle fascicle behavior from muscle-tendon unit behavior is effectively used to produce net positive mechanical work at the joint during maximum sprint acceleration. Muscle fascicles shortened throughout the first and second steps, while shortening occurred earlier during the first step, where negative joint work was lower compared with the second step. Elastic strain energy may be stored during dorsiflexion after touchdown since fascicles did not lengthen at the same time to dissipate energy. Thus, net positive work generation is accommodated by the reuse of elastic strain energy along with positive gastrocnemius fascicle work. Our results show a mechanism of how muscles with high in-series compliance can contribute to net positive joint work. KW - locomotion KW - muscle mechanics KW - running KW - sprint start KW - ultrasonography Y1 - 2021 U6 - https://doi.org/10.1111/sms.13956 SN - 0905-7188 (Druckausgabe) SN - 1600-0838 (Onlineausgabe) VL - 31 IS - 7 SP - 1471 EP - 1480 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Richter, Charlotte A1 - Braunstein, Björn A1 - Stäudle, Benjamin A1 - Attias, Julia A1 - Süss, Alexander A1 - Weber, Tobias A1 - Mileva, Katya N. A1 - Rittweger, Jörn A1 - Green, David A. A1 - Albracht, Kirsten T1 - Gastrocnemius medialis contractile behavior during running differs between simulated Lunar and Martian gravities JF - Scientific reports N2 - The international partnership of space agencies has agreed to proceed forward to the Moon sustainably. Activities on the Lunar surface (0.16 g) will allow crewmembers to advance the exploration skills needed when expanding human presence to Mars (0.38 g). Whilst data from actual hypogravity activities are limited to the Apollo missions, simulation studies have indicated that ground reaction forces, mechanical work, muscle activation, and joint angles decrease with declining gravity level. However, these alterations in locomotion biomechanics do not necessarily scale to the gravity level, the reduction in gastrocnemius medialis activation even appears to level off around 0.2 g, while muscle activation pattern remains similar. Thus, it is difficult to predict whether gastrocnemius medialis contractile behavior during running on Moon will basically be the same as on Mars. Therefore, this study investigated lower limb joint kinematics and gastrocnemius medialis behavior during running at 1 g, simulated Martian gravity, and simulated Lunar gravity on the vertical treadmill facility. The results indicate that hypogravity-induced alterations in joint kinematics and contractile behavior still persist between simulated running on the Moon and Mars. This contrasts with the concept of a ceiling effect and should be carefully considered when evaluating exercise prescriptions and the transferability of locomotion practiced in Lunar gravity to Martian gravity. KW - Bone quality and biomechanics KW - Environmental impact KW - Skeletal muscle KW - Tendons KW - Ultrasound Y1 - 2021 U6 - https://doi.org/10.1038/s41598-021-00527-9 SN - 2045-2322 N1 - Corresponding author: Charlotte Richter VL - 11 IS - Article number: 22555 PB - Springer Nature CY - London ER - TY - JOUR A1 - Quittmann, Oliver J. A1 - Abel, Thomas A1 - Albracht, Kirsten A1 - Strüder, Heiko K. T1 - Biomechanics of all-out handcycling exercise: kinetics, kinematics and muscular activity of a 15-s sprint test in able-bodied participants JF - Sports Biomechanics N2 - This study aims to quantify the kinematics, kinetics and muscular activity of all-out handcycling exercise and examine their alterations during the course of a 15-s sprint test. Twelve able-bodied competitive triathletes performed a 15-s all-out sprint test in a recumbent racing handcycle that was attached to an ergometer. During the sprint test, tangential crank kinetics, 3D joint kinematics and muscular activity of 10 muscles of the upper extremity and trunk were examined using a power metre, motion capturing and surface electromyography (sEMG), respectively. Parameters were compared between revolution one (R1), revolution two (R2), the average of revolution 3 to 13 (R3) and the average of the remaining revolutions (R4). Shoulder abduction and internal-rotation increased, whereas maximal shoulder retroversion decreased during the sprint. Except for the wrist angles, angular velocity increased for every joint of the upper extremity. Several muscles demonstrated an increase in muscular activation, an earlier onset of muscular activation in crank cycle and an increased range of activation. During the course of a 15-s all-out sprint test in handcycling, the shoulder muscles and the muscles associated to the push phase demonstrate indications for short-duration fatigue. These findings are helpful to prevent injuries and improve performance in all-out handcycling. KW - Handbike KW - sEMG KW - Paralympic sport KW - performance testing KW - high-intensity exercise Y1 - 2022 U6 - https://doi.org/10.1080/14763141.2020.1745266 SN - 1752-6116 (Onlineausgabe) SN - 1476-3141 (Druckausgabe) VL - 21 IS - 10 SP - 1200 EP - 1223 PB - Taylor & Francis CY - London ER - TY - JOUR A1 - Richter, Charlotte A1 - Braunstein, Bjoern A1 - Stäudle, Benjamin A1 - Attias, Julia A1 - Suess, Alexander A1 - Weber, Tobias A1 - Mileva, Katja N. A1 - Rittweger, Joern A1 - Green, David A. A1 - Albracht, Kirsten T1 - Gastrocnemius medialis contractile behavior is preserved during 30% body weight supported gait training JF - Frontiers in Sports and Active Living N2 - Rehabilitative body weight supported gait training aims at restoring walking function as a key element in activities of daily living. Studies demonstrated reductions in muscle and joint forces, while kinematic gait patterns appear to be preserved with up to 30% weight support. However, the influence of body weight support on muscle architecture, with respect to fascicle and series elastic element behavior is unknown, despite this having potential clinical implications for gait retraining. Eight males (31.9 ± 4.7 years) walked at 75% of the speed at which they typically transition to running, with 0% and 30% body weight support on a lower-body positive pressure treadmill. Gastrocnemius medialis fascicle lengths and pennation angles were measured via ultrasonography. Additionally, joint kinematics were analyzed to determine gastrocnemius medialis muscle–tendon unit lengths, consisting of the muscle's contractile and series elastic elements. Series elastic element length was assessed using a muscle–tendon unit model. Depending on whether data were normally distributed, a paired t-test or Wilcoxon signed rank test was performed to determine if body weight supported walking had any effects on joint kinematics and fascicle–series elastic element behavior. Walking with 30% body weight support had no statistically significant effect on joint kinematics and peak series elastic element length. Furthermore, at the time when peak series elastic element length was achieved, and on average across the entire stance phase, muscle–tendon unit length, fascicle length, pennation angle, and fascicle velocity were unchanged with respect to body weight support. In accordance with unchanged gait kinematics, preservation of fascicle–series elastic element behavior was observed during walking with 30% body weight support, which suggests transferability of gait patterns to subsequent unsupported walking. KW - AlterG KW - rehabilitation KW - gait KW - walking KW - ultrasound imaging KW - series elastic element behavior KW - muscle fascicle behavior KW - unloading Y1 - 2021 U6 - https://doi.org/10.3389/fspor.2020.614559 SN - 2624-9367 VL - 2021 IS - 2 PB - Frontiers CY - Lausanne ER - TY - JOUR A1 - Stäudle, Benjamin A1 - Seynnes, Olivier A1 - Laps, Guido A1 - Brüggemann, Gert-Peter A1 - Albracht, Kirsten T1 - Altered gastrocnemius contractile behavior in former achilles tendon rupture patients during walking JF - Frontiers in Physiology N2 - Achilles tendon rupture (ATR) remains associated with functional limitations years after injury. Architectural remodeling of the gastrocnemius medialis (GM) muscle is typically observed in the affected leg and may compensate force deficits caused by a longer tendon. Yet patients seem to retain functional limitations during—low-force—walking gait. To explore the potential limits imposed by the remodeled GM muscle-tendon unit (MTU) on walking gait, we examined the contractile behavior of muscle fascicles during the stance phase. In a cross-sectional design, we studied nine former patients (males; age: 45 ± 9 years; height: 180 ± 7 cm; weight: 83 ± 6 kg) with a history of complete unilateral ATR, approximately 4 years post-surgery. Using ultrasonography, GM tendon morphology, muscle architecture at rest, and fascicular behavior were assessed during walking at 1.5 m⋅s–1 on a treadmill. Walking patterns were recorded with a motion capture system. The unaffected leg served as control. Lower limbs kinematics were largely similar between legs during walking. Typical features of ATR-related MTU remodeling were observed during the stance sub-phases corresponding to series elastic element (SEE) lengthening (energy storage) and SEE shortening (energy release), with shorter GM fascicles (36 and 36%, respectively) and greater pennation angles (8° and 12°, respectively). However, relative to the optimal fascicle length for force production, fascicles operated at comparable length in both legs. Similarly, when expressed relative to optimal fascicle length, fascicle contraction velocity was not different between sides, except at the time-point of peak series elastic element (SEE) length, where it was 39 ± 49% lower in the affected leg. Concomitantly, fascicles rotation during contraction was greater in the affected leg during the whole stance-phase, and architectural gear ratios (AGR) was larger during SEE lengthening. Under the present testing conditions, former ATR patients had recovered a relatively symmetrical walking gait pattern. Differences in seen AGR seem to accommodate the profound changes in MTU architecture, limiting the required fascicle shortening velocity. Overall, the contractile behavior of the GM fascicles does not restrict length- or velocity-dependent force potentials during this locomotor task. KW - tendon rupture KW - muscle fascicle behavior KW - walking gait KW - force generation KW - ultrasound imaging Y1 - 2022 U6 - https://doi.org/10.3389/fphys.2022.792576 SN - 1664-042X VL - 13 PB - Frontiers Research Foundation CY - Lausanne ER - TY - GEN T1 - Ordnung zur Änderung der Prüfungsordnung für die Bachelorstudiengänge „Schienenfahrzeugtechnik“ „Schienenfahrzeugtechnik (Teilzeit)“ und „Dualer Studiengang Schienenfahrzeugtechnik (DIRail)“ im Fachbereich Maschinenbau und Mechatronik an der Fachhochschule Aachen T3 - FH-Mitteilungen - 70/2019 KW - Amtliche Mitteilung KW - Bachelor KW - Prüfungsordnung KW - Änderungsordnung KW - Maschinenbau und Mechatronik Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge „Schienenfahrzeugtechnik“ „Schienenfahrzeugtechnik (Teilzeit)“ und „Dualer Studiengang Schienenfahrzeugtechnik (DIRail)“ im Fachbereich Maschinenbau und Mechatronik an der Fachhochschule Aachen T3 - FH-Mitteilungen - 71/2019 KW - Prüfungsordnung KW - Bachelor KW - Maschinenbau und Mechatronik KW - lesbare Fassung Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Masterstudiengang „Bauingenieurwesen“ vom 10. Dezember 2012 (FH-Mitteilung Nr. 129/2012) in der Fassung der Bekanntmachung der Änderungsordnungen vom 30. Mai 2017 (FH-Mitteilung Nr. 58/2017) an der Fachhochschule Aachen T3 - FH-Mitteilungen - 81/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Master KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Masterstudiengang „Facility Management“ vom 29. November 2012 (FH-Mitteilung Nr. 127/2012) in der Fassung der Bekanntmachung der Änderungsordnungen vom 3. Februar 2016 (FH-Mitteilung Nr. 10/2016) an der Fachhochschule Aachen T3 - FH-Mitteilungen - 83/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Master KW - Facility Management Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den Bachelorstudiengang Bauingenieurwesen (7-semestrig), Bachelorstudiengang Bauingenieurwesen mit Praxissemester (8-semestrig) und Bachelorstudiengang Bauingenieurwesen mit Auslandssemester (8-semestrig) Abschluss Bachelor of Engineering T3 - FH-Mitteilungen - 84/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den Bachelorstudiengang Bauingenieurwesen (7-semestrig), Bachelorstudiengang Bauingenieurwesen mit Praxissemester (8-semestrig), Bachelorstudiengang Bauingenieurwesen mit Auslandssemester (8-semestrig) Abschluss Bachelor of Engineering : vom 1. September 2011 – FH-Mitteilung Nr. 76/2011 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 74/2019 (Nichtamtliche lesbare Fassung, Studienbeginn WS 2016/17–2017/18) T3 - FH-Mitteilungen - 85/2019 KW - Amtliche Mitteilung KW - Studien- und Prüfungsordnung KW - Lesbare Fassung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Studien- und Prüfungsordnung für die Bachelorstudiengänge „Bauingenieurwesen“ (7-semestrig), „Bauingenieurwesen mit Praxissemester“ (8-semestrig) und „Bauingenieurwesen mit Auslandssemester“ (8-semestrig) vom 1. September 2011 (FH-Mitteilung Nr. 76/2011) in der Fassung der Bekanntmachung der Änderungsordnungen vom 22. August 2013 (FH-Mitteilung Nr. 88/2013), 8. Juni 2016 (FH-Mitteilung Nr. 80/2016) und 16. August 2019 (FH-Mitteilung Nr. 74/2019) an der Fachhochschule Aachen : vom 24. Juli 2018 – FH-Mitteilung Nr. 119/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 75/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 86/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung des Studiengangs Holzingenieurwesen (7-semestrig) – Abschluss Bachelor of Engineering – im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 16. Juli 2012 – FH-Mitteilung Nr. 66/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 76/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 87/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Holzingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Bachelorstudiengang „Holzingenieurwesen“ (7-semestrig) vom 16. Juli 2012 (FH-Mitteilung Nr. 66/2012) in der Fassung der Bekanntmachung der Änderungsordnungen vom 6. Juli 2016 (FH-Mitteilung Nr. 95/2016) und 16. August 2019 (FH-Mitteilung Nr. 76/2019) an der Fachhochschule Aachen : vom 24. Juli 2018 – FH-Mitteilung Nr. 120/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 77/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 88/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Holzingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den dreisemestrigen Masterstudiengang „Industrial Engineering“ an der Fachhochschule Aachen : vom 11. Dezember 2014 – FH-Mitteilung Nr. 154/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. Februar 2019 – FH-Mitteilung Nr. 5/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab SS 2016) T3 - FH-Mitteilungen - 104/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Master KW - Industrial Engineering Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den dreisemestrigen Masterstudiengang „Industrial Engineering“ an der Fachhochschule Aachen : vom 11. Dezember 2014 – FH-Mitteilung Nr. 154/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. Februar 2019 – FH-Mitteilung Nr. 5/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab WS 2017/18) T3 - FH-Mitteilungen - 105/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Master KW - Industrial Engineering Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den viersemestrigen Masterstudiengang „Industrial Engineering“ an der Fachhochschule Aachen : vom 11.Dezember 2014 – FH-Mitteilung Nr. 156/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. Februar 2019 – FH-Mitteilung Nr. 6/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab WS 2015/16) T3 - FH-Mitteilungen - 106/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Master KW - Industrial Engineering Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den viersemestrigen Masterstudiengang „Industrial Engineering“ an der Fachhochschule Aachen : vom 11.Dezember 2014 – FH-Mitteilung Nr. 156/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. Februar 2019 – FH-Mitteilung Nr. 6/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab WS 2017/18) T3 - FH-Mitteilungen - 107/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Master KW - Industrial Engineering Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den viersemestrigen Masterstudiengang „Industrial Engineering“ Fachbereich Wirtschaftswissenschaften Fachbereich Maschinenbau und Mechatronik an der Fachhochschule Aachen : vom 11. Dezember 2014 – FH-Mitteilung Nr. 156/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. Februar 2019 – FH-Mitteilung Nr. 6/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab WS 2018/19) T3 - FH-Mitteilungen - 108/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Master KW - Industrial Engineering Y1 - 2019 ER - TY - GEN T1 - 4. Ordnung zur Änderung der Zugangsordnung für den Masterstudiengang Elektrotechnik im Fachbereich Elektrotechnik und Informationstechnik an der Fachhochschule Aachen : vom 5. November 2019 T3 - FH-Mitteilungen - 109/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Zugangsordnung KW - Master KW - Elektrotechnik Y1 - 2019 ER - TY - GEN T1 - Zugangsordnung für die Masterstudiengänge „Elektrotechnik“ und „Elektrotechnik (Teilzeit)“ im Fachbereich Elektrotechnik und Informationstechnik an der Fachhochschule Aachen : vom 22. Januar 2010 – FH-Mitteilung Nr. 6/2010 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. November 2019 – FH-Mitteilung Nr. 109/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 110/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Zugangsordnung KW - Master KW - Elektrotechnik Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Masterstudiengänge „Elektrotechnik“ und „Elektrotechnik (Teilzeit)“ im Fachbereich Elektrotechnik und Informationstechnik an der Fachhochschule Aachen : vom 5. November 2019 T3 - FH-Mitteilungen - 111/2019 KW - Amtliche Mitteilung KW - Prüfungsordnung KW - Master KW - Elektrotechnik KW - Elektrotechnik (Teilzeit) Y1 - 2019 ER - TY - GEN T1 - 4. Ordnung zur Änderung der Zugangsordnung für den Masterstudiengang Information Systems Engineering im Fachbereich Elektrotechnik und Informationstechnik an der Fachhochschule Aachen : vom 5. November 2019 T3 - FH-Mitteilungen - 112/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Zugangsordnung KW - Master KW - Information Systems Engineering Y1 - 2019 ER - TY - GEN T1 - Zugangsordnung für die Masterstudiengänge „Information Systems Engineering“ und „Information Systems Engineering (Teilzeit)“ im Fachbereich Elektrotechnik und Informationstechnik an der Fachhochschule Aachen : vom 22. Januar 2010 – FH-Mitteilung Nr. 4/2010 in der Fassung der Bekanntmachung der Änderungsordnung vom 5. November 2019 – FH-Mitteilung Nr. 112/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 113/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Zugangsordnung KW - Master KW - Information Systems Engineering Y1 - 2019 ER - TY - RPRT A1 - Albracht, Kirsten A1 - Ritzmann, Ramona A1 - Kramer, Andreas A1 - Meskemper, Joshua A1 - Stäudle, Benjamin A1 - Kümmel, Jacob A1 - Freyler, Katrin A1 - Felsenberg, Dieter A1 - Gruber, Marksu A1 - Gollhofer, Albert A1 - Belavy, Daniel T1 - Vorhaben: Muskelkraftgenerierungsfähigkeit in Mikrogravitation KW - Elektromyographie KW - Bein KW - Extensor KW - Elektrostimulation KW - Raumfahrt Y1 - 2017 U6 - https://doi.org/10.2314/KXP:1670327353 N1 - Förderkennzeichen: BMWi 50WB1428 Öffentlicher Schlussbericht für die Technische Informationsbibliothek der Universität Hannover Berichtszeitraum: 01.09.2014 - 31.01.2017 PB - Deutsche Sporthochschule Köln CY - Klön ER - TY - GEN T1 - Prüfungsordnung für die Masterstudiengänge „Information Systems Engineering“ und „Information Systems Engineering (Teilzeit)“ an der Fachhochschule Aachen : vom 5. November 2019 T3 - FH-Mitteilungen - 114/2019 KW - Amtliche Mitteilung KW - Prüfungsordnung KW - Master KW - Information Systems Engineering KW - Information Systems Engineering (Teilzeit) Y1 - 2019 ER - TY - GEN T1 - 2. Ordnung zur Änderung der Beitragsordnung der Studierendenschaft der Fachhochschule Aachen : vom 7. November 2019 T3 - FH-Mitteilungen - 115/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Beitragsordnung der Studierendenschaft Y1 - 2019 ER - TY - GEN T1 - Beitragsordnung der Studierendenschaft der Fachhochschule Aachen : vom 11. Dezember 2018 – FH-Mitteilung Nr. 168/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 7. November 2019 – FH-Mitteilung Nr. 115/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 116/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Beitragsordnung der Studierendenschaft Y1 - 2019 ER - TY - GEN T1 - Gesamtprüfungsordnung für den Bachelorstudiengang „Bauingenieurwesen mit Orientierungssemester“ an der Fachhochschule Aachen und der RWTH Aachen : vom 8. November 2019 T3 - FH-Mitteilungen - 117/2019 KW - Amtliche Mitteilung KW - Gesamtprüfungsordnung KW - Bachelor KW - Bauingenieurwesen mit Orientierungssemester KW - RWTH Aachen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Prüfungsordnung für die Bachelorstudiengänge Bauingenieurwesen, Bauingenieurwesen mit Praxissemester, Bauingenieurwesen mit Auslandssemester, Bauingenieurwesen Double Degree (NUST) und Bauingenieurwesen Dual an der Fachhochschule Aachen : vom 8. November 2019 T3 - FH-Mitteilungen - 118/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge Bauingenieurwesen, Bauingenieurwesen mit Praxissemester, Bauingenieurwesen mit Auslandssemester, Bauingenieurwesen Double Degree (NUST), Bauingenieurwesen Dual und Bauingenieurwesen mit Orientierungssemester im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 28. Juni 2018 – FH-Mitteilung Nr. 89/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 8. November 2019 – FH-Mitteilung Nr. 118/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 119/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Prüfungsordnung für den Bachelorstudiengang Holzingenieurwesen im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 8. November 2019 T3 - FH-Mitteilungen - 120/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Prüfungsordnung KW - Bachelor KW - Holzingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge Holzingenieurwesen, Holzingenieurwesen mit Praxissemester, Holzingenieurwesen mit Auslandssemester, Holzingenieurwesen Dual und Holzingenieurwesen mit Orientierungssemester : vom 28. Juni 2018 – FH-Mitteilung Nr. 90/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 8. November 2019 – FH-Mitteilung Nr. 120/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 121/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Bachelor KW - Holzingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Zugangsordnung für die Masterstudiengänge „Energiewirtschaft & Informatik“ (3 Semester) und „Energiewirtschaft & Informatik“ (4 Semester) Fachbereich Energietechnik Fachbereich Medizintechnik und Technomathematik an der Fachhochschule Aachen : vom 8. November 2019 T3 - FH-Mitteilungen - 122/2019 KW - Amtliche Mitteilung KW - Zugangsordnung KW - Master KW - Energiewirtschaft KW - Informatik Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Masterstudiengänge „Energiewirtschaft & Informatik“ (3 Semester) und „Energiewirtschaft & Informatik“ (4 Semester) Fachbereich Energietechnik Fachbereich Medizintechnik und Technomathematik an der Fachhochschule Aachen : vom 8. November 2019 T3 - FH-Mitteilungen - 123/2019 KW - Amtliche Mitteilung KW - Prüfungsordnung KW - Master KW - Energiewirtschaft KW - Informatik Y1 - 2019 ER - TY - GEN T1 - Richtlinie zur Durchführung von Sonderveranstaltungen in den Gebäuden und Liegenschaften der FH Aachen (Veranstaltungsrichtlinie) : vom 20. November 2019 T3 - FH-Mitteilungen - 124a/2019 KW - Amtliche Mitteilung KW - Richtlinie KW - Veranstaltungsrichtlinie KW - Durchführung von Sonderveranstaltungen Y1 - 2019 ER - TY - GEN T1 - Richtlinie zur Durchführung von Sonderveranstaltungen in den Gebäuden und Liegenschaften der FH Aachen (Veranstaltungsrichtlinie) : vom 20. November 2019 Anlage 1 aktualisiert am 22. Januar 2020 T3 - FH-Mitteilungen - 124b/2019 KW - Amtliche Mitteilung KW - Richtlinie KW - Veranstaltungsrichtlinie KW - Durchführung von Sonderveranstaltungen KW - Aktualisierung Y1 - 2019 ER - TY - GEN T1 - Richtlinie für die Beschäftigung und Vergütung studentischer und wissenschaftlicher Hilfskräfte an der Fachhochschule Aachen : vom 20. November 2019 T3 - FH-Mitteilungen - 125a/2019 KW - Amtliche Mitteilung KW - Richtlinie KW - studentische Hilfskräfte KW - wissenschaftliche Hilfkräfte Y1 - 2019 ER - TY - GEN T1 - Richtlinie für die Beschäftigung und Vergütung studentischer und wissenschaftlicher Hilfskräfte an der Fachhochschule Aachen : vom 20. November 2019 aktualisiert am 24. November 2022 T3 - FH-Mitteilungen - 125b/2019 KW - Amtliche Mitteilung KW - Richtlinie KW - studentische Hilfskräfte KW - wissenschaftliche Hilfkräfte Y1 - 2019 ER - TY - GEN T1 - Gleichstellungsquoten der FH Aachen für die Jahre 2019 –2021 : vom 20. November 2019 T3 - FH-Mitteilungen - 126/2019 KW - Amtliche Mitteilung KW - Gleichstellungsquoten KW - 2019 KW - 2020 KW - 2021 Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Prüfungsordnungen für den Masterstudiengang „Nuclear Applications“ vom 13. Februar 2004 (FH-Mitteilung Nr. 5/2004) und vom 25. Februar 2010 (FH-Mitteilung Nr. 15/2010) in den Fassungen der Bekanntmachung der Änderungsordnungen vom 6. November 2012 (FH-Mitteilung Nr. 120/2012), 18. Juni 2014 (FH- Mitteilung Nr. 72/2014) und vom 15. Juni 2015 (FH-Mitteilung Nr. 28/2015) : vom 29. November 2019 T3 - FH-Mitteilungen - 127/2019 KW - Amtliche Mitteilung KW - Aufhebungsordnung KW - Prüfungsordnung KW - Master KW - Nuclear Applications Y1 - 2023 ER - TY - GEN T1 - 5. Ordnung zur Änderung der Prüfungsordnung für die Bachelorstudiengänge „Betriebswirtschaft Praxis Plus“ und „Betriebswirtschaft Praxis Plus (Teilzeit)“ mit dem Studienabschluss „Bachelor of Science“ am Fachbereich Wirtschaftswissenschaften der Fachhochschule Aachen (PO – BWL Praxis Plus) : vom 29. November 2019 T3 - FH-Mitteilungen - 128/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Prüfungsordnung KW - Bachelor KW - Betriebswirtschaft Praxis Plus Y1 - 2023 ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge „Betriebswirtschaft Praxis Plus“ und „Betriebswirtschaft Praxis Plus (Teilzeit)“ mit dem Studienabschluss „Bachelor of Science“ am Fachbereich Wirtschaftswissenschaften der Fachhochschule Aachen (PO-BWL Praxis Plus) : vom 14. Januar 2014 – FH-Mitteilung Nr. 2/2014 in der Fassung der Bekanntmachung der Änderungsordnung vom 29. November 2019 – FH-Mitteilung Nr. 128/2019 (Nichtamtliche lesbare Fassung | Studienbeginn ab WS 2019/20) T3 - FH-Mitteilungen - 129/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Prüfungsordnung KW - Bachelor KW - Betriebswirtschaft Praxis Plus Y1 - 2023 ER - TY - GEN T1 - 2. Änderung der Richtlinie des Rektorats der FH Aachen für die Vergabe von Lehrveranstaltungsprämien : vom 13. Dezember 2019 T3 - FH-Mitteilungen - 130/2019 KW - Amtliche Mitteilung KW - Änderung KW - Richtlinie KW - Rektorat KW - Lehrveranstaltungsprämien Y1 - 2019 ER - TY - GEN T1 - Richtlinie des Rektorats der FH Aachen für die Vergabe von Lehrveranstaltungsprämien : vom 16. Juli 2012 – FH-Mitteilung Nr. 68/2012 in der Fassung der Bekanntmachung der Änderung vom 13. Dezember 2019 – FH-Mitteilung Nr. 130/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 131/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Richtlinie KW - Rektorat KW - Lehrveranstaltungsprämien Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den Masterstudiengang Nuclear Applications im Fachbereich Chemie und Biotechnologie an der Fachhochschule Aachen : vom 17. Dezember 2019 T3 - FH-Mitteilungen - 132/2019 KW - Amtliche Mitteilung KW - Prüfungsordnung KW - Master KW - Nuclear Applications KW - Chemie und Biotechnologie Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Prüfungsordnung für den Masterstudiengang „Information Systems Engineering“ vom 22. Januar 2010 (FH-Mitteilung Nr. 5/2010), zuletzt geändert durch Änderungsordnung vom 4. Februar 2013 (FH-Mitteilung Nr. 6/2013) : vom 20. Dezember 2019 T3 - FH-Mitteilungen - 133/2019 KW - Amtliche Mitteilung KW - Aufhebungsordnung KW - Prüfungsordnung KW - Master KW - Information Systems Engineering Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Prüfungsordnung für den Masterstudiengang „Elektrotechnik“ (zuvor „Nachrichtentechnik“ und „Elektrotechnik und Informationstechnik“) vom 22. Januar 2010 (FH-Mitteilung Nr. 7/2010), zuletzt geändert durch Änderungsordnung vom 25. April 2016 (FH-Mitteilung Nr. 31/2016) : vom 20. Dezember 2019 T3 - FH-Mitteilungen - 134/2019 KW - Amtliche Mitteilung KW - Aufhebungsordnung KW - Prüfungsordnung KW - Master KW - Elektrotechnik Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Prüfungsordnung für die Masterstudiengänge „Energiewirtschaft & Informatik“ (3 Semester) und „Energiewirtschaft & Informatik“ (4 Semester) vom 4. Mai 2016 (FH-Mitteilung Nr. 59/2016) Fachbereich Energietechnik Fachbereich Medizintechnik und Technomathematik an der Fachhochschule Aachen : vom 16. Januar 2020 T3 - FH-Mitteilungen - 1/2020 KW - Amtliche Mitteilung KW - Aufhebungsordnung KW - Prüfungsordnung KW - Master KW - Energiewirtschaft & Informatik Y1 - 2020 ER - TY - GEN T1 - Verwaltungs- und Benutzungsordnung des Solar-Instituts Jülich (SIJ) : vom 27. Januar 2020 T3 - FH-Mitteilungen - 2/2020 KW - Amtliche Mitteilung KW - Verwaltungs- und Benutzungsordnung KW - Solar-Institut Jülich KW - SIJ Y1 - 2020 ER - TY - GEN T1 - Verwaltungs- und Benutzungsordnung des Solar-Instituts Jülich (SIJ) vom 27. Januar 2020 : berichtigt durch Bekanntmachung vom 18. März 2020 (FH-Mitteilung Nr. 27/2020) T3 - FH-Mitteilungen - 2b/2020 KW - Amtliche Mitteilung KW - Verwaltungs- und Benutzungsordnung KW - Solar-Institut Jülich KW - SIJ KW - berichtigt Y1 - 2020 ER - TY - CHAP A1 - Maurer, Florian A1 - Miskiw, Kim K. A1 - Acosta, Rebeca Ramirez A1 - Harder, Nick A1 - Sander, Volker A1 - Lehnhoff, Sebastian ED - Jorgensen, Bo Norregaard ED - Pereira da Silva, Luiz Carlos ED - Ma, Zheng T1 - Market abstraction of energy markets and policies - application in an agent-based modeling toolbox T2 - EI.A 2023: Energy Informatics N2 - In light of emerging challenges in energy systems, markets are prone to changing dynamics and market design. Simulation models are commonly used to understand the changing dynamics of future electricity markets. However, existing market models were often created with specific use cases in mind, which limits their flexibility and usability. This can impose challenges for using a single model to compare different market designs. This paper introduces a new method of defining market designs for energy market simulations. The proposed concept makes it easy to incorporate different market designs into electricity market models by using relevant parameters derived from analyzing existing simulation tools, morphological categorization and ontologies. These parameters are then used to derive a market abstraction and integrate it into an agent-based simulation framework, allowing for a unified analysis of diverse market designs. Furthermore, we showcase the usability of integrating new types of long-term contracts and over-the-counter trading. To validate this approach, two case studies are demonstrated: a pay-as-clear market and a pay-as-bid long-term market. These examples demonstrate the capabilities of the proposed framework. KW - Energy market design KW - Agent-based simulation KW - Market modeling Y1 - 2023 SN - 978-3-031-48651-7 (Print) SN - 978-3-031-48652-4 (eBook) U6 - https://doi.org/10.1007/978-3-031-48652-4_10 N1 - Energy Informatics Academy Conference, 6-8 December 23, Campinas, Brazil. N1 - Part of the Lecture Notes in Computer Science book series (LNCS,volume 14468). SP - 139 EP - 157 PB - Springer CY - Cham ER - TY - RPRT A1 - Göll, Fabian A1 - Braunstein, Björn A1 - Albracht, Kirsten T1 - Lernende roboterassistierte Systeme für das neuromuskuläre Training - RoSylerNT; Teilvorhaben: Entwicklung eines neuromuskuloskelettalen Modells als Basis für die Interaktionsfähigkeiten autonomer Assistenzsysteme KW - Robotik KW - Rehabilitationsmedizin KW - Neuromuskuläres System KW - Rehabilitatives Training KW - Trainingsgerät Y1 - 2021 U6 - https://doi.org/10.2314/KXP:1855318741 N1 - Förderkennzeichen BMBF 16SV7853 Schlussbericht der Deutschen Sporthochschule Köln für das Vorhaben RoSylerNT Laufzeit: 01.08.2017-31.07.2021 PB - Deutsche Sporthochschule Köln CY - Köln ER - TY - JOUR A1 - Peterson-Oster, Madeleine A1 - Peterson, Leif Arne T1 - Fassadensystem: Optisch ansprechend, freistehend, elementiert und aus Eichenholz JF - Bauen mit Holz, Der Zimmermann N2 - Bei der Entwicklung des Fassadensystems ging es darum die mögliche Dauerhaftigkeit von Holz bei direkter Bewitterung zu maximieren. Gleichzeitig soll gezeigt werden, dass mittels durchdachter Ansätze beim konstruktiven Holzschutz und die Wahl einer geeigneten Holzart langlebige Konstruktionen realisiert werden können. Y1 - 2020 SN - 0005-6545 PB - Rudolf Müller CY - Köln ER - TY - JOUR A1 - Karschuck, Tobias A1 - Schmidt, Stefan A1 - Achtsnicht, Stefan A1 - Poghossian, Arshak A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - Multiplexing system for automated characterization of a capacitive field-effect sensor array JF - Physica Status Solidi A N2 - In comparison to single-analyte devices, multiplexed systems for a multianalyte detection offer a reduced assay time and sample volume, low cost, and high throughput. Herein, a multiplexing platform for an automated quasi-simultaneous characterization of multiple (up to 16) capacitive field-effect sensors by the capacitive–voltage (C–V) and the constant-capacitance (ConCap) mode is presented. The sensors are mounted in a newly designed multicell arrangement with one common reference electrode and are electrically connected to the impedance analyzer via the base station. A Python script for the automated characterization of the sensors executes the user-defined measurement protocol. The developed multiplexing system is tested for pH measurements and the label-free detection of ligand-stabilized, charged gold nanoparticles. KW - Capacitive field-effect sensor KW - Gold nanoparticles KW - Label-free detection KW - Multicell KW - Multiplexing Y1 - 2023 U6 - https://doi.org/10.1002/pssa.202300265 SN - 1862-6300 (Print) SN - 1862-6319 (Online) N1 - Corresponding author: Michael Josef Schöning VL - 220 IS - 22 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Janus, Kevin Alexander A1 - Achtsnicht, Stefan A1 - Drinic, Aleksander A1 - Kopp, Alexander A1 - Keusgen, Michael A1 - Schöning, Michael Josef T1 - Transient magnesium-based thin-film temperature sensor on a flexible, bioabsorbable substrate for future medical applications JF - Applied Research N2 - In this work, the bioabsorbable materials, namely fibroin, polylactide acid (PLA), magnesium and magnesium oxide are investigated for their application as transient, resistive temperature detectors (RTD). For this purpose, a thin-film magnesium-based meander-like electrode is deposited onto a flexible, bioabsorbable substrate (fibroin or PLA) and encapsulated (passivated) by additional magnesium oxide layers on top and below the magnesium-based electrode. The morphology of different layered RTDs is analyzed by scanning electron microscopy. The sensor performance and lifetime of the RTD is characterized both under ambient atmospheric conditions between 30°C and 43°C, and wet tissue-like conditions with a constant temperature regime of 37°C. The latter triggers the degradation process of the magnesium-based layers. The 3-layers RTDs on a PLA substrate could achieve a lifetime of 8.5 h. These sensors also show the best sensor performance under ambient atmospheric conditions with a mean sensitivity of 0.48 Ω/°C ± 0.01 Ω/°C. KW - Silk fibroin KW - Polylactide acid KW - Bioabsorbable KW - Resistive temperature detector Y1 - 2023 U6 - https://doi.org/10.1002/appl.202300102 SN - 2702-4288 (Print) N1 - Corresponding author: Michael Josef Schöning IS - Accepted manuscript PB - Wiley-VCH ER - TY - JOUR A1 - Alnemer, Momin Sami Mohammad A1 - Kotliar, Konstantin A1 - Neuhaus, Valentin A1 - Pape, Hans-Christoph A1 - Ciritsis, Bernhard D. T1 - Cost-effectiveness analysis of surgical proximal femur fracture prevention in elderly: a Markov cohort simulation model JF - Cost Effectiveness and Resource Allocation N2 - Background Hip fractures are a common and costly health problem, resulting in significant morbidity and mortality, as well as high costs for healthcare systems, especially for the elderly. Implementing surgical preventive strategies has the potential to improve the quality of life and reduce the burden on healthcare resources, particularly in the long term. However, there are currently limited guidelines for standardizing hip fracture prophylaxis practices. Methods This study used a cost-effectiveness analysis with a finite-state Markov model and cohort simulation to evaluate the primary and secondary surgical prevention of hip fractures in the elderly. Patients aged 60 to 90 years were simulated in two different models (A and B) to assess prevention at different levels. Model A assumed prophylaxis was performed during the fracture operation on the contralateral side, while Model B included individuals with high fracture risk factors. Costs were obtained from the Centers for Medicare & Medicaid Services, and transition probabilities and health state utilities were derived from available literature. The baseline assumption was a 10% reduction in fracture risk after prophylaxis. A sensitivity analysis was also conducted to assess the reliability and variability of the results. Results With a 10% fracture risk reduction, model A costs between $8,850 and $46,940 per quality-adjusted life-year ($/QALY). Additionally, it proved most cost-effective in the age range between 61 and 81 years. The sensitivity analysis established that a reduction of ≥ 2.8% is needed for prophylaxis to be definitely cost-effective. The cost-effectiveness at the secondary prevention level was most sensitive to the cost of the contralateral side’s prophylaxis, the patient’s age, and fracture treatment cost. For high-risk patients with no fracture history, the cost-effectiveness of a preventive strategy depends on their risk profile. In the baseline analysis, the incremental cost-effectiveness ratio at the primary prevention level varied between $11,000/QALY and $74,000/QALY, which is below the defined willingness to pay threshold. Conclusion Due to the high cost of hip fracture treatment and its increased morbidity, surgical prophylaxis strategies have demonstrated that they can significantly relieve the healthcare system. Various key assumptions facilitated the modeling, allowing for adequate room for uncertainty. Further research is needed to evaluate health-state-associated risks. KW - Hip fractures KW - Prevention KW - Geriatric KW - Cost-effectiveness KW - Prophylaxis Y1 - 2023 U6 - https://doi.org/10.1186/s12962-023-00482-4 SN - 1478-7547 N1 - Corresponding author: Momin S. Alnemer IS - 21, Article number: 77 PB - Springer Nature ER - TY - JOUR A1 - Sildatke, Michael A1 - Karwanni, Hendrik A1 - Kraft, Bodo A1 - Zündorf, Albert T1 - A distributed microservice architecture pattern for the automated generation of information extraction pipelines JF - SN Computer Science N2 - Companies often build their businesses based on product information and therefore try to automate the process of information extraction (IE). Since the information source is usually heterogeneous and non-standardized, classic extract, transform, load techniques reach their limits. Hence, companies must implement the newest findings from research to tackle the challenges of process automation. They require a flexible and robust system that is extendable and ensures the optimal processing of the different document types. This paper provides a distributed microservice architecture pattern that enables the automated generation of IE pipelines. Since their optimal design is individual for each input document, the system ensures the ad-hoc generation of pipelines depending on specific document characteristics at runtime. Furthermore, it introduces the automated quality determination of each available pipeline and controls the integration of new microservices based on their impact on the business value. The introduced system enables fast prototyping of the newest approaches from research and supports companies in automating their IE processes. Based on the automated quality determination, it ensures that the generated pipelines always meet defined business requirements when they come into productive use. KW - Architectural design KW - Model-driven software engineering KW - Software and systems modeling KW - Enterprise information systems KW - Information extraction Y1 - 2023 U6 - https://doi.org/10.1007/s42979-023-02256-4 SN - 2661-8907 N1 - Corresponding authors: Michael Sildatke, Hendrik Karwanni IS - 4, Article number: 833 PB - Springer Singapore CY - Singapore 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 - Digel, Ilya A1 - Akimbekov, Nuraly S. A1 - Rogachev, Evgeniy A1 - Pogorelova, Natalia T1 - Bacterial cellulose produced by Medusomyces gisevii on glucose and sucrose: biosynthesis and structural properties JF - Cellulose N2 - In this work, the effects of carbon sources and culture media on the production and structural properties of bacterial cellulose (BC) synthesized by Medusomyces gisevii have been studied. The culture medium was composed of different initial concentrations of glucose or sucrose dissolved in 0.4% extract of plain green tea. Parameters of the culture media (titratable acidity, substrate conversion degree etc.) were monitored daily for 20 days of cultivation. The BC pellicles produced on different carbon sources were characterized in terms of biomass yield, crystallinity and morphology by field emission scanning electron microscopy (FE-SEM), atomic force microscopy and X-ray diffraction. Our results showed that Medusomyces gisevii had higher BC yields in media with sugar concentrations close to 10 g L−1 after a 18–20 days incubation period. Glucose in general lead to a higher BC yield (173 g L−1) compared to sucrose (163.5 g L−1). The BC crystallinity degree and surface roughness were higher in the samples synthetized from sucrose. Obtained FE-SEM micrographs show that the BC pellicles synthesized in the sucrose media contained densely packed tangles of cellulose fibrils whereas the BC produced in the glucose media displayed rather linear geometry of the BC fibrils without noticeable aggregates. KW - Bacterial cellulose KW - Medusomyces gisevi KW - Carbon sources KW - Culture media KW - Cellulose nanostructure Y1 - 2023 U6 - https://doi.org/10.1007/s10570-023-05592-z SN - 1572-882X (Online) SN - 0969-0239 (Print) N1 - Corresponding author: Ilya Digel PB - Springer Science + Business Media CY - Dordrecht ER - TY - CHAP A1 - Frühwald, Katja A1 - Peterson, Leif Arne A1 - Hasenstab, Andreas ED - Fouad, Nabil A. T1 - Prüfverfahren zur Begutachtung der Materialeigenschaften von Holztragwerken T2 - Bauphysik‐Kalender 2012: Schwerpunkt: Gebäudediagnostik N2 - Dieses Kapitel beinhaltet: - Einleitung - Ausgewählte typische Schäden an Holzbauwerken - Das Material Holz und seine Besonderheiten - Bestandserfassung - Labormethoden - Begutachtungsbeispiele - Zusammenfassung und Schlussfolgerungen - Literatur Y1 - 2012 SN - 9783433029862 (Print) SN - 9783433601235 (Online) U6 - https://doi.org/10.1002/9783433601235.ch4 SP - 103 EP - 155 PB - Ernst & Sohn CY - Berlin ER - TY - BOOK A1 - Holschemacher, Klaus A1 - Peters, Klaus A1 - Peterson, Leif Arne A1 - Schneider, Klaus-Jürgen A1 - Thiele, Ralf T1 - Konstruktiver Ingenieurbau kompakt: Formelsammlung und Bemessungshilfen nach Eurocode für die Bereiche: Lastannahmen, Holzbau, Mauerwerksbau, Stahlbau, Stahlbetonbau, Geotechnik, statische Hinweise N2 - Das kompakte Nachschlagewerk für den konstruktiven Ingenieurbau wurde für den täglichen Gebrauch auf der Baustelle konzipiert und stellt alle für die rechnerische Nachweisführung und Konstruktion von Bauteilen wichtigsten Angaben in Form einer Formelsammlung mit Nachweishilfen zur Verfügung. Der Inhalt wurde auf Basis der neuen Eurocodes komplett aktualisiert und erweitert. Die 4. Auflage enthält in bewährter Manier eine umfangreiche Formelsammlung, Querschnittswerte und Bemessungshilfen zu den Bereichen Lastannahmen, Holzbau, Mauerwerksbau, Stahlbau, Stahlbetonbau, Geotechnik sowie statische Hinweise. Farbiges Papier erleichtert den zielgerichteten Zugriff auf die einzelnen Fachgebiete. Y1 - 2013 SN - 978-3-410-22775-5 PB - Beuth CY - Berlin ET - 4., vollständig überarbeitete Auflage ER - TY - BOOK A1 - Nebgen, Nikolaus A1 - Peterson, Leif Arne T1 - Holzbau kompakt nach Eurocode 5 N2 - "Holzbau kompakt" wurde sowohl für Studierende als auch Praktiker konzipiert und beschränkt sich nicht auf reine Holzbauaufgaben, sondern setzt sich ggf. auch mit der Tragwerkslehre auseinander. Die Neuauflage basiert auf dem Eurocode 5 und berücksichtigt zahlreiche neue Erkenntnisse aus Forschung und praxisnaher Entwicklung. Neben den Grundlagen der Bemessung, der Baustoffe, der Dauerhaftigkeit und des Brandschutzes konzentriert sich das Grundlagenwerk besonders auf das Konstruieren mit Holz und Holzwerkstoffen, anschaulich dargestellt an sehr ausführlichen Beispielen für Wohnhaus und Hallentragwerk. Y1 - 2015 SN - 978-3-410-25455-3 PB - Beuth CY - Berlin ET - 5. Auflage ER - TY - GEN T1 - Prüfungsordnung für den Masterstudiengang Architektur im Fachbereich Architektur an der Fachhochschule Aachen T3 - FH-Mitteilungen - 69/2019 KW - Amtliche Mitteilung KW - Master KW - Prüfungsordnung KW - Studienbeginn 2018/19 KW - Architektur Y1 - 2019 ER - TY - GEN T1 - 3. Ordnung zur Änderung der Studien- und Prüfungsordnung für den Bachelorstudiengang Bauingenieurwesen (7-semestrig), Bachelorstudiengang Bauingenieurwesen mit Praxissemester (8-semestrig), Bachelorstudiengang Bauingenieurwesen mit Auslandssemester (8-semestrig), Abschluss Bachelor of Engineering T3 - FH-Mitteilungen - 74/2019 KW - Studien- und Prüfungsordnung KW - Änderungsordnung KW - Bachelor KW - Bauingieurwesen KW - Amtliche Mitteilung Y1 - 2019 ER - TY - GEN T1 - 2. Ordnung zur Änderung der Prüfungsordnung für den dualen ausbildungsintegrierenden Bachelorstudiengang „Physiotherapie“ und den berufsbegleitenden Bachelorstudiengang „Physiotherapie“ an der Fachhochschule Aachen in Kooperation mit der Medizinischen Fakultät der Rheinisch-Westfälisch Technischen Hochschule Aachen und der Physiotherapieschule des Universitätsklinikums Aachen (UK Aachen) T3 - FH-Mitteilungen - 72/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Bachelor KW - Prüfungsordnung KW - Physiotherapie Y1 - 2019 ER - TY - GEN T1 - Fremdfirmenrichtlinie der FH Aachen T3 - FH-Mitteilungen - 17/2019 KW - Amtliche Mitteilungen KW - Fremdfirmenrichtlinie Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge „Elektrotechnik“ und „Elektrotechnik mit Praxissemester“ im Fachbereich Energietechnik an der FH Aachen : vom 10. Oktober 2019 T3 - FH-Mitteilungen - 99/2019 KW - Amtliche Mitteilung KW - Prüfungsordnung KW - Bachelor KW - Elektrotechnik KW - Energietechnik Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Gesamtprüfungsordnung für den Bachelorstudiengang „Elektrotechnik mit Orientierungssemester“ an der Fachhochschule Aachen und der RWTH Aachen : vom 10. Oktober 2019 T3 - FH-Mitteilungen - 100/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Gesamtprüfungsordnung KW - Bachelor KW - Elektrotechnik Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den dualen Bachelorstudiengang Bauingenieurwesen – Netzingenieur (9 Semester) und den Bachelorstudiengang Bauingenieurwesen – Netzingenieur (7 Semester) Abschluss Bachelor of Engineering im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 16. Juli 2012 – FH-Mitteilung Nr. 67/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 78/2019 (Nichtamtliche lesbare Fassung, Studienbeginn WS 2014/15–2016/17) T3 - FH-Mitteilungen - 90/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung des Studiengangs Bauingenieurwesen – Netzingenieur – Abschluss Bachelor of Engineering – im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 16. Juli 2012 – FH-Mitteilung Nr. 67/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 78/2019 (Nichtamtliche lesbare Fassung | Studienbeginn WS 2011/12–2013/14) T3 - FH-Mitteilungen - 89/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den dualen Bachelorstudiengang Bauingenieurwesen – Netzingenieur (9 Semester) und den Bachelorstudiengang Bauingenieurwesen – Netzingenieur (7 Semester) Abschluss Bachelor of Engineering im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 16. Juli 2012 – FH-Mitteilung Nr. 67/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 78/2019 (Nichtamtliche lesbare Fassung, Studienbeginn ab WS 2017/18) T3 - FH-Mitteilungen - 91/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Masterstudiengang „Facility Management“ vom 29. November 2012 (FH-Mitteilung Nr. 127/2012) in der Fassung der Bekanntmachung der Änderungsordnungen vom 3. Februar 2016 (FH-Mitteilung Nr. 10/2016) und 16. August 2019 (FH-Mitteilung Nr. 82/2019) an der Fachhochschule Aachen : vom 24. Juli 2018 – FH-Mitteilung Nr. 122/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 83/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 97/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Master KW - Facility Management Y1 - 2019 ER - TY - GEN T1 - Prüfungsordnung für den dualen ausbildungsintegrierenden Bachelorstudiengang „Physiotherapie“ und den berufsbegleitenden Bachelorstudiengang „Physiotherapie“ an der Fachhochschule Aachen in Kooperation mit der Medizinischen Fakultät der Rheinisch-Westfälisch Technischen Hochschule Aachen und der Physiotherapieschule des Universitätsklinikums Aachen (UK Aachen) T3 - FH-Mitteilungen - 73/2019 KW - Amtliche Mitteilung KW - Bachelor KW - Prüfungsordnung KW - lesbare Fassung KW - Physiotherapie Y1 - 2019 ER - TY - GEN T1 - Beitragsordnung des Studierendenwerks Aachen (21. Änderung) : vom 3. Juli 2019 T3 - FH-Mitteilungen - 98/2019 KW - Amtliche Mitteilung KW - Beitragsordnung KW - Studierendenwerk Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Regelung der Einstellung des Bachelorstudiengangs Bauingenieurwesen – Netzingenieur (7-semestrig) und des dualen Bachelorstudiengangs Bauingenieurwesen – Netzingenieur (9-semestrig) im Fachbereich Bauingeieurwesen an der Fachhochschule Aachen : vom 24. Juli 2018 – FH-Mitteilung Nr. 123/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 79/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 92/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Einstellungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den Masterstudiengang Bauingenieurwesen – Abschluss Master of Engineering – im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen : vom 10. Dezember 2012 – FH-Mitteilung Nr. 129/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 80/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 93/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Master KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den Masterstudiengang Facility Management – Abschluss Master of Engineering – : vom 29. November 2012 – FH-Mitteilung Nr. 127/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 82/2019 (Nichtamtliche lesbare Fassung | Studienbeginn WS 2016/17–SS 2018) T3 - FH-Mitteilungen - 96/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Master KW - Facility Management Y1 - 2019 ER - TY - GEN T1 - Studien- und Prüfungsordnung für den Masterstudiengang Facility Management – Abschluss Master of Engineering – : vom 29. November 2012 – FH-Mitteilung Nr. 127/2012 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 82/2019 (Nichtamtliche lesbare Fassung, Studienbeginn WS 2012/13–SS 2016) T3 - FH-Mitteilungen - 95/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Master KW - Facility Management Y1 - 2019 ER - TY - GEN T1 - 2. Ordnung zur Änderung der Studien- und Prüfungsordnung für den Masterstudiengang Facility Management – Abschluss Master of Engineering – im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen T3 - FH-Mitteilungen - 82/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Master KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Masterstudiengang „Bauingenieurwesen“ vom 10. Dezember 2012 (FH-Mitteilung Nr. 129/2012) in der Fassung der Bekanntmachung der Änderungsordnung vom 30. Mai 2017 (FH-Mitteilung Nr. 58/2017) und 16. August 2019 (FH-Mitteilung Nr. 80/2019) an der Fachhochschule Aachen : vom 24. Juli 2018 – FH-Mitteilung Nr. 121/2018 in der Fassung der Bekanntmachung der Änderungsordnung vom 16. August 2019 – FH-Mitteilung Nr. 81/2019 (Nichtamtliche lesbare Fassung) T3 - FH-Mitteilungen - 94/2019 KW - Amtliche Mitteilung KW - Lesbare Fassung KW - Studien- und Prüfungsordnung KW - Master KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Aufhebung der Studien- und Prüfungsordnung für die Bachelorstudiengänge „Bauingenieurwesen“ (7-semestrig), „Bauingenieurwesen mit Praxissemester“ (8-semestrig) und „Bauingenieurwesen mit Auslandssemester“ (8-semestrig) vom 1. September 2011 (FH-Mitteilung Nr. 76/2011) in der Fassung der Bekanntmachung der Änderungsordnungen vom 22. August 2013 (FH- Mitteilung Nr. 88/2013) und vom 8. Juni 2016 (FH-Mitteilung Nr. 80/2016) an der Fachhochschule Aachen T3 - FH-Mitteilungen - 75/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studiengangs- und Prüfungsordnung KW - Bauingenieurwesen KW - Bachelor Y1 - 2019 ER - TY - GEN T1 - 3. Ordnung zur Änderung der Studien- und Prüfungsordnung für den dualen Bachelorstudiengang Bauingenieurwesen, Netzingenieur (9 Semester) und den Bachelorstudiengang Bauingenieurwesen – Netzingenieur (7 Semester) Abschluss Bachelor of Engineering im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen T3 - FH-Mitteilungen - 78/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Aufhebung der Studien- und Prüfungsordnung für die Bachelorstudiengänge „Bauingenieurwesen“ (7-semestrig), „Bauingenieurwesen mit Praxissemester“ (8-semestrig) und „Bauingenieurwesen mit Auslandssemester“ (8-semestrig) vom 1. September 2011 (FH-Mitteilung Nr. 76/2011) in der Fassung der Bekanntmachung der Änderungsordnungen vom 22. August 2013 (FH- Mitteilung Nr. 88/2013) und vom 8. Juni 2016 (FH-Mitteilung Nr. 80/2016) an der Fachhochschule Aachen T3 - FH-Mitteilungen - 76/2019 KW - Amtliche Mitteilung KW - Studien- und Prüfungsordnung KW - Änderungsordnung KW - Holzingenieurwesen KW - Bachelor Y1 - 2019 ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Aufhebung der Studien- und Prüfungsordnung für den Bachelorstudiengang „Holzingenieurwesen“ (7-semestrig) vom 16. Juli 2012 (FH-Mitteilung Nr. 66/2012) in der Fassung der Bekanntmachung der Änderungsordnung vom 6. Juli 2016 (FH-Mitteilung Nr. 95/2016) an der Fachhochschule Aachen T3 - FH-Mitteilungen - 77/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Holzingenieurwesen KW - Bachelor Y1 - 2019 ER - TY - JOUR A1 - Berg-Postweiler, Julia A1 - Steuer-Dankert, Linda A1 - Leicht-Scholten, Carmen T1 - One size does not fit all: Applying antibias trainings in academia JF - The International Journal of Organizational Diversity N2 - Antibias training is increasingly demanded and practiced in academia and industry to increase employees’ sensitivity to discrimination, racism, and diversity. Under the heading of “Diversity Management,” antibias trainings are mainly offered as one-off workshops intending to raise awareness of unconscious biases, create a diversity-affirming corporate culture, promote awareness of the potential of diversity, and ultimately enable the reflection of diversity in development processes. However, coming from childhood education, research and scientific articles on the sustainable effectiveness of antibias in adulthood, especially in academia, are very scarce. In order to fill this research gap, the article aims to explore how sustainable the effects of individual antibias trainings on participants’ behavior are. In order to investigate this, participant observation in a qualitative pre–post setting was conducted, analyzing antibias training in an academic context. Two observers actively participated in the training sessions and documented the activities and reflection processes of the participants. Overall, the results question the effectiveness of single antibias trainings and show that a target-group adaptive approach is mandatory owing to the background of the approach in early childhood education. Therefore, antibias work needs to be adapted to the target group’s needs and realities of life. Furthermore, the study reveals that single antibias trainings must be embedded in a holistic diversity management approach to stimulate sustainable reflection processes among the target group. This article is one of the first to scientifically evaluate antibias training effectiveness, especially in engineering sciences and the university context. KW - Antibias KW - Diversity Management KW - Organizational Culture KW - Engineering Habitus Y1 - 2023 U6 - https://doi.org/10.18848/2328-6261/CGP/v24i01/1-23 SN - 2328-6261 (Print) SN - 2328-6229 (Online) VL - 24 IS - 1 SP - 1 EP - 23 PB - Common Ground Research Networks ER - TY - GEN T1 - Ordnung zur Änderung der Ordnung zur Regelung der Einstellung des Bachelorstudiengangs Bauingenieurwesen – Netzingenieur (7-semestrig) und des dualen Bachelorstudiengangs Bauingenieurwesen – Netzingenieur (9-semestrig) im Fachbereich Bauingeieurwesen an der Fachhochschule Aachen T3 - FH-Mitteilungen - 79/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Einstellungsordnung KW - Bachelor KW - Bauingenieurwesen Y1 - 2019 ER - TY - GEN T1 - 2. Ordnung zur Änderung der Studien- und Prüfungsordnung für den Masterstudiengang Bauingenieurwesen – Abschluss Master of Engineering – im Fachbereich Bauingenieurwesen an der Fachhochschule Aachen T3 - FH-Mitteilungen - 80/2019 KW - Amtliche Mitteilung KW - Änderungsordnung KW - Studien- und Prüfungsordnung KW - Master KW - Bauingenieurwesen Y1 - 2019 ER -