@article{SchoenrockMuckeltHastermannetal.2024,
  author    = {Schoenrock, Britt and Muckelt, Paul E. and Hastermann, Maria and Albracht, Kirsten and MacGregor, Robert and Martin, David and Gunga, Hans-Christian and Salanova, Michele and Stokes, Maria J. and Warner, Martin B. and Blottner, Dieter},
  title     = {Muscle stiffness indicating mission crew health in space},
  series = {Scientific Reports},
  volume    = {14},
  journal   = {Scientific Reports},
  number    = {Article number: 4196},
  publisher = {Springer Nature},
  address   = {London},
  issn      = {2045-2322},
  doi       = {10.1038/s41598-024-54759-6},
  pages     = {13 Seiten},
  year      = {2024},
  abstract  = {Muscle function is compromised by gravitational unloading in space affecting overall musculoskeletal health. Astronauts perform daily exercise programmes to mitigate these effects but knowing which muscles to target would optimise effectiveness. Accurate inflight assessment to inform exercise programmes is critical due to lack of technologies suitable for spaceflight. Changes in mechanical properties indicate muscle health status and can be measured rapidly and non-invasively using novel technology. A hand-held MyotonPRO device enabled monitoring of muscle health for the first time in spaceflight (> 180 days). Greater/maintained stiffness indicated countermeasures were effective. Tissue stiffness was preserved in the majority of muscles (neck, shoulder, back, thigh) but Tibialis Anterior (foot lever muscle) stiffness decreased inflight vs. preflight (p < 0.0001; mean difference 149 N/m) in all 12 crewmembers. The calf muscles showed opposing effects, Gastrocnemius increasing in stiffness Soleus decreasing. Selective stiffness decrements indicate lack of preservation despite daily inflight countermeasures. This calls for more targeted exercises for lower leg muscles with vital roles as ankle joint stabilizers and in gait. Muscle stiffness is a digital biomarker for risk monitoring during future planetary explorations (Moon, Mars), for healthcare management in challenging environments or clinical disorders in people on Earth, to enable effective tailored exercise programmes.},
  language  = {en}
}
@inproceedings{WittigRuettersBragard2024,
  author    = {Wittig, M. and R{\"u}tters, Ren{\´e} and Bragard, Michael},
  title     = {Application of RL in control systems using the example of a rotatory inverted pendulum},
  series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  editor    = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Schwarz, Andr{\´e}},
  publisher = {le-tex publishing services GmbH},
  address   = {Leipzig},
  isbn      = {978-3-910103-02-3},
  doi       = {10.33968/2024.53},
  pages     = {241 -- 248},
  year      = {2024},
  abstract  = {In this paper, the use of reinforcement learning (RL) in control systems is investigated using a rotatory inverted pendulum as an example. The control behavior of an RL controller is compared to that of traditional LQR and MPC controllers. This is done by evaluating their behavior under optimal conditions, their disturbance behavior, their robustness and their development process. All the investigated controllers are developed using MATLAB and the Simulink simulation environment and later deployed to a real pendulum model powered by a Raspberry Pi. The RL algorithm used is Proximal Policy Optimization (PPO). The LQR controller exhibits an easy development process, an average to good control behavior and average to good robustness. A linear MPC controller could show excellent results under optimal operating conditions. However, when subjected to disturbances or deviations from the equilibrium point, it showed poor performance and sometimes instable behavior. Employing a nonlinear MPC Controller in real time was not possible due to the high computational effort involved. The RL controller exhibits by far the most versatile and robust control behavior. When operated in the simulation environment, it achieved a high control accuracy. When employed in the real system, however, it only shows average accuracy and a significantly greater performance loss compared to the simulation than the traditional controllers. With MATLAB, it is not yet possible to directly post-train the RL controller on the Raspberry Pi, which is an obstacle to the practical application of RL in a prototyping or teaching setting. Nevertheless, RL in general proves to be a flexible and powerful control method, which is well suited for complex or nonlinear systems where traditional controllers struggle.},
  language  = {en}
}
@inproceedings{AltherrDoeringFrauenrathetal.2024,
  author    = {Altherr, Lena and D{\"o}ring, Bernd and Frauenrath, Tobias and Groß, Rolf and Mohan, Nijanthan and Oyen, Marc and Schnittcher, Lukas and Voß, Norbert},
  title     = {DiggiTwin: ein interdisziplin{\"a}res Projekt zur Nutzung digitaler Zwillinge auf dem Weg zu einem klimaneutralen Geb{\"a}udebestand},
  series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: praktische L{\"o}sungen f{\"u}r die industrielle Automation},
  editor    = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Schwarz, Andr{\´e}},
  publisher = {le-tex publishing services GmbH},
  address   = {Leipzig},
  isbn      = {978-3-910103-02-3},
  doi       = {10.33968/2024.67},
  pages     = {341 -- 346},
  year      = {2024},
  abstract  = {Im Hinblick auf die Klimaziele der Bundesrepublik Deutschland konzentriert sich das Projekt Diggi Twin auf die nachhaltige Geb{\"a}udeoptimierung. Grundlage f{\"u}r eine ganzheitliche Geb{\"a}ude{\"u}berwachung und -optimierung bildet dabei die Digitalisierung und Automation im Sinne eines Smart Buildings. Das interdisziplin{\"a}re Projekt der FH Aachen hat das Ziel, ein bestehendes Hochschulgeb{\"a}ude und einen Neubau an klimaneutrale Standards anzupassen. Im Rahmen des Projekts werden bekannte Verfahren, wie das Building Information Modeling (BIM), so erweitert, dass ein digitaler Geb{\"a}udezwilling entsteht. Dieser kann zur Optimierung des Geb{\"a}udebetriebs herangezogen werden, sowie als Basis f{\"u}r eine Erweiterung des Bewertungssystems Nachhaltiges Bauen (BNB) dienen. Mithilfe von Sensortechnologie und k{\"u}nstlicher Intelligenz kann so ein pr{\"a}zises Monitoring wichtiger Geb{\"a}udedaten erfolgen, um ungenutzte Energieeinsparpotenziale zu erkennen und zu nutzen. Das Projekt erforscht und setzt methodische Erkenntnisse zu BIM und digitalen Geb{\"a}udezwillingen praxisnah um, indem es spezifische Fragen zur Energie- und Ressourceneffizienz von Geb{\"a}uden untersucht und konkrete L{\"o}sungen f{\"u}r die Geb{\"a}udeoptimierung entwickelt.},
  language  = {de}
}
@article{EngelmannSimsekShalabyetal.2024,
  author    = {Engelmann, Ulrich M. and Simsek, Beril and Shalaby, Ahmed and Krause, Hans-Joachim},
  title     = {Key contributors to signal generation in frequency mixing magnetic detection (FMMD): an in silico study},
  series = {Sensors},
  volume    = {24},
  journal   = {Sensors},
  number    = {6},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {1424-8220},
  doi       = {10.3390/s24061945},
  pages     = {Artikel 1945},
  year      = {2024},
  abstract  = {Frequency mixing magnetic detection (FMMD) is a sensitive and selective technique to detect magnetic nanoparticles (MNPs) serving as probes for binding biological targets. Its principle relies on the nonlinear magnetic relaxation dynamics of a particle ensemble interacting with a dual frequency external magnetic field. In order to increase its sensitivity, lower its limit of detection and overall improve its applicability in biosensing, matching combinations of external field parameters and internal particle properties are being sought to advance FMMD. In this study, we systematically probe the aforementioned interaction with coupled N{\´e}el-Brownian dynamic relaxation simulations to examine how key MNP properties as well as applied field parameters affect the frequency mixing signal generation. It is found that the core size of MNPs dominates their nonlinear magnetic response, with the strongest contributions from the largest particles. The drive field amplitude dominates the shape of the field-dependent response, whereas effective anisotropy and hydrodynamic size of the particles only weakly influence the signal generation in FMMD. For tailoring the MNP properties and parameters of the setup towards optimal FMMD signal generation, our findings suggest choosing large particles of core sizes dc > 25 nm nm with narrow size distributions (σ < 0.1) to minimize the required drive field amplitude. This allows potential improvements of FMMD as a stand-alone application, as well as advances in magnetic particle imaging, hyperthermia and magnetic immunoassays.},
  language  = {en}
}
@article{ZhenLiangStaatetal.2024,
  author    = {Zhen, Manghao and Liang, Yunpei and Staat, Manfred and Li, Quanqui and Li, Jianbo},
  title     = {Discontinuous fracture behaviors and constitutive model of sandstone specimens containing non-parallel prefabricated fissures under uniaxial compression},
  series = {Theoretical and Applied Fracture Mechanics},
  volume    = {131},
  journal   = {Theoretical and Applied Fracture Mechanics},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-8442},
  doi       = {10.1016/j.tafmec.2024.104373},
  pages     = {Artikel 104373},
  year      = {2024},
  abstract  = {The deformation and damage laws of non-homogeneous irregular structural planes in rocks are the basis for studying the stability of rock engineering. To investigate the damage characteristics of rock containing non-parallel fissures, uniaxial compression tests and numerical simulations were conducted on sandstone specimens containing three non-parallel fissures inclined at 0°, 45° and 90° in this study. The characteristics of crack initiation and crack evolution of fissures with different inclinations were analyzed. A constitutive model for the discontinuous fractures of fissured sandstone was proposed. The results show that the fracture behaviors of fissured sandstone specimens are discontinuous. The stress-strain curves are non-smooth and can be divided into nonlinear crack closure stage, linear elastic stage, plastic stage and brittle failure stage, of which the plastic stage contains discontinuous stress drops. During the uniaxial compression test, the middle or ends of 0° fissures were the first to crack compared to 45° and 90° fissures. The end with small distance between 0° and 45° fissures cracked first, and the end with large distance cracked later. After the final failure, 0° fissures in all specimens were fractured, while 45° and 90° fissures were not necessarily fractured. Numerical simulation results show that the concentration of compressive stress at the tips of 0°, 45° and 90° fissures, as well as the concentration of tensile stress on both sides, decreased with the increase of the inclination angle. A constitutive model for the discontinuous fractures of fissured sandstone specimens was derived by combining the logistic model and damage mechanic theory. This model can well describe the discontinuous drops of stress and agrees well with the whole processes of the stress-strain curves of the fissured sandstone specimens.},
  language  = {en}
}
@misc{Huening2024,
  author    = {H{\"u}ning, Felix},
  title     = {Positionssensorvorrichtung},
  year      = {2024},
  abstract  = {Die Erfindung betrifft eine Positionssensorvorrichtung zur Bestimmung einer Absolutposition eines beweglichen ersten Teils relativ zu einem ortsfesten zweiten Teil mit einem mit dem beweglichen ersten Teil gekoppelter Codek{\"o}rper, der dazu eingerichtet ist, eine Codespur mit einer Mehrzahl von in Spurrichtung aufeinanderfolgenden Codeelementen zu enthalten zur Bildung eines Codewortes, mit einer magnetischen Detektionseinrichtung zur Detektion der Codespur, wobei die Detektionseinrichtung zum einen an dem Codek{\"o}rper befestigte und entlang der Spurrichtung in einem solchen Abstand gegenpolig zueinander angeordnete Permanentmagneten aufweist, dass der Abstand mit einer vorgegebenen L{\"a}nge der jeweiligen Codeelemente {\"u}bereinstimmt, und zum anderen eine Anzahl von ortsfest und quer zu dem Codek{\"o}rper versetzt angeordnete Wiegandsensoren aufweist, wobei der Abstand des Wiegandsensors zu einer Erstreckungsebene der Permanentmagneten derart gew{\"a}hlt ist, dass bei {\"U}berdeckung des Wiegandsensors durch den Permanentmagneten ein Wiegandpuls in dem Wiegandsensor induziert wird.},
  language  = {de}
}
@unpublished{GriegerMehrkanoonBialonski2024,
  author    = {Grieger, Niklas and Mehrkanoon, Siamak and Bialonski, Stephan},
  title     = {Preprint: Data-efficient sleep staging with synthetic time series pretraining},
  series = {arXiv},
  journal   = {arXiv},
  pages     = {10 Seiten},
  year      = {2024},
  abstract  = {Analyzing electroencephalographic (EEG) time series can be challenging, especially with deep neural networks, due to the large variability among human subjects and often small datasets. To address these challenges, various strategies, such as self-supervised learning, have been suggested, but they typically rely on extensive empirical datasets. Inspired by recent advances in computer vision, we propose a pretraining task termed "frequency pretraining" to pretrain a neural network for sleep staging by predicting the frequency content of randomly generated synthetic time series. Our experiments demonstrate that our method surpasses fully supervised learning in scenarios with limited data and few subjects, and matches its performance in regimes with many subjects. Furthermore, our results underline the relevance of frequency information for sleep stage scoring, while also demonstrating that deep neural networks utilize information beyond frequencies to enhance sleep staging performance, which is consistent with previous research. We anticipate that our approach will be advantageous across a broad spectrum of applications where EEG data is limited or derived from a small number of subjects, including the domain of brain-computer interfaces.},
  language  = {en}
}
@book{ElsaesserKlebinggatKuhnetal.2024,
  author    = {Elsaesser, Evelyn and Klebinggat, Michael and Kuhn, Wilfried and Michielsens, Constant and Pauels, Willibert and Popkes, Enno E. and Schneider, Elke and Laack, Walter van and Warven, Rinus van},
  title     = {Schnittstelle Tod - Ist die Menschheit zu retten ohne Vertrauen auf ein Danach},
  editor    = {Laack, Walter van},
  publisher = {van Laack Buchverlag},
  address   = {Aachen},
  isbn      = {978-3-936624-58-8},
  pages     = {156 Seiten},
  year      = {2024},
  language  = {de}
}
@masterthesis{Kordes2024,
  type      = {Bachelor Thesis},
  author    = {Kordes, Franka},
  title     = {Invisible Cities},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {173 Seiten},
  year      = {2024},
  abstract  = {Diese Arbeit pr{\"a}sentiert eine Neuinterpretation des Romans "Invisible Cities" von Italo Calvino in einem handgefertigten, k{\"u}nstlerischen Buchobjekt. Seit der Erstver{\"o}ffentlichung des italienischen Literaturklassikers orientieren sich jegliche Neuauflagen an der Originalfassung. Die klassisch gestaltete Urversion wird der komplexen und eindrucksvollen Geschichte nicht mehr gerecht. Die Erz{\"a}hlung findet auf mehreren Ebenen statt, die durch verschiedene Papiersorten repr{\"a}sentiert werden. Die Lesenden wissen somit immer, wo sie sich auf ihrer Reise durch die traumhaften und surrealen St{\"a}dte befinden. Das Buch enth{\"a}lt mehrere Illustrationen auf Transparentpapierb{\"o}gen, welche die Stadtbeschreibungen begleiten. Der besondere Fokus der Arbeit lag in den Illustrationen und der technischen und handwerklichen Umsetzung der Bindung.},
  language  = {de}
}
@book{KrauseUlkeFerger2024,
  author    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  title     = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  edition   = {10. Auflage},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9},
  pages     = {XII, 1087 Seiten},
  year      = {2024},
  language  = {de}
}
@incollection{RickerUlke2024,
  author    = {Ricker, Marcus and Ulke, Bernd},
  title     = {Baustoffe},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_2},
  pages     = {61 -- 148},
  year      = {2024},
  abstract  = {In diesem Kapitel werden die Eigenschaften der Baustoffe Bitumen, Beton und Mauerwerk insbesondere unter dem Aspekt der Anwendung im Baustellenbetrieb dargestellt.},
  language  = {de}
}
@incollection{Ulke2024,
  author    = {Ulke, Bernd},
  title     = {Privates Baurecht und Nachtragsmanagement},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_3},
  pages     = {149 -- 216},
  year      = {2024},
  abstract  = {Kein Bauvorhaben sollte realisiert werden, ohne dass es auf einer vertraglichen Grundlage zwischen Auftraggeber und Auftragnehmer fußt. Diese vertragliche Grundlage zu kennen ist essenziell, um dementsprechend handeln zu k{\"o}nnen. Denn nur wer seine eigenen Rechte und auch Pflichten kennt, kann sich auf diese berufen.},
  language  = {de}
}
@incollection{Ulke2024,
  author    = {Ulke, Bernd},
  title     = {Bauwirtschaft},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_4},
  pages     = {17 -- 261},
  year      = {2024},
  abstract  = {Die Leistungen der Bauwirtschaft und deren wirtschaftliche Bedeutung in Deutschland werden anhand einer Vielzahl statistischer Daten verdeutlicht. Die im Vergleich zu anderen Wirtschaftsbereichen auftretenden branchenspezifischen Besonderheiten der Bauwirtschaft werden anhand von verschiedenen Kriterien herausgearbeitet. Das Zusammenspiel der einzelnen Akteure des Sektors und die dabei sich ergebenden bzw. zu beachtenden Rechts- und Vertragsgrundlagen werden dargestellt. Aufgrund der meist erheblichen H{\"o}he des eingesetzten Kapitals werden auch notwendige Formen der Risikoabsicherungen und der in der Branche {\"u}blichen und teilweise vorgeschriebenen Versicherungsm{\"o}glichkeiten angesprochen.},
  language  = {de}
}
@incollection{Ulke2024,
  author    = {Ulke, Bernd},
  title     = {{\"O}ffentliches Baurecht, Ausschreibung und Vergabe},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_5},
  pages     = {263 -- 297},
  year      = {2024},
  abstract  = {Durch das {\"o}ffentliche Baurecht werden die Zul{\"a}ssigkeit, die Grenzen, die Ordnung und die F{\"o}rderung der baulichen Nutzung des Bodens geregelt. Die Ausschreibung und die Vergabe sind von essenzieller Bedeutung f{\"u}r ein Bauvorhaben und werden deshalb in der HOAI mit zwei Leistungsphasen abgebildet: n{\"a}mlich mit der Leistungsphase 6 Vorbereitung der Vergabe sowie der Leistungsphase 7 Mitwirkung bei der Vergabe. Im Zuge der Ausschreibung und der Vergabe werden die f{\"u}r den AG anfallenden Kosten festgelegt und bilden somit die letzte gr{\"o}ßere Stellschraube f{\"u}r Preiseinsparungen.},
  language  = {de}
}
@incollection{Ferger2024,
  author    = {Ferger, Martin},
  title     = {Arbeitsvorbereitung und Ablaufplanung},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_6},
  pages     = {299 -- 332},
  year      = {2024},
  abstract  = {Die Arbeitsvorbereitung, als ein wesentliches Aufgabengebiet des Baubetriebswesens, ist von enormer Bedeutung f{\"u}r den Erfolg eines Bauprojektes. Die Arbeitsvorbereitung l{\"a}sst sich zeitlich sowohl in der Angebotsphase (kalkulationsbegleitende Arbeitsvorbereitung), in der Vorbereitungsphase der Baustelle (von Auftragsvergabe bis Baubeginn) als auch baubegleitend einordnen.},
  language  = {de}
}
@incollection{KrauseUlke2024,
  author    = {Krause, Thomas and Ulke, Bernd},
  title     = {Bauabrechnung und Mengenermittlung},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_7},
  pages     = {333 -- 397},
  year      = {2024},
  abstract  = {n diesem Kapitel werden die Abrechnungsvorschriften wichtiger ATV kurz, aber umfassend zusammengestellt. Einigen Abrechnungsbestimmungen f{\"u}r Einzelleistungen, die keine Nebenleistungen sind ((siehe DIN 18299 und Abschnitt 4 der jeweiligen ATV), sind mit aufgenommen worden; die ATV enthalten jedoch weitergehende Festlegungen {\"u}ber Nebenleistungen und Besondere Leistungen. Im Anschluss folgen Hinweise zu den Toleranzen im Hochbau sowie im Straßenbau.},
  language  = {de}
}
@incollection{Krause2024,
  author    = {Krause, Thomas},
  title     = {Baumaschinen},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_8},
  pages     = {399 -- 498},
  year      = {2024},
  abstract  = {Die Leistungsermittlung und Bemessung von Baumaschinen f{\"u}r die folgenden Bereiche werden bearbeitet: Maschinen f{\"u}r den Betonbau, Hebezeuge, Maschinen f{\"u}r den Erdbau, Straßenbaumaschinen, R{\"u}ckbauger{\"a}te und Elemente der Baustelleneinrichtung.},
  language  = {de}
}
@incollection{Ulke2024,
  author    = {Ulke, Bernd},
  title     = {Boden, Baugrube, Verbau},
  series = {Zahlentafeln f{\"u}r den Baubetrieb},
  booktitle = {Zahlentafeln f{\"u}r den Baubetrieb},
  editor    = {Krause, Thomas and Ulke, Bernd and Ferger, Martin},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-41329-3 (Print)},
  doi       = {10.1007/978-3-658-41330-9_9},
  pages     = {499 -- 658},
  year      = {2024},
  abstract  = {Die L{\"o}sung den Baugrund betreffender Fragestellungen beginnen i. d. R. mit der Durchf{\"u}hrung von Baugrunderkundungen, um alle notwendigen Parameter zu erhalten, die f{\"u}r die Planung und Durchf{\"u}hrung von Bauvorhaben notwendig sind. Im Folgenden werden die wichtigsten Erkundungen in Abh{\"a}ngigkeit der erforderlichen G{\"u}teklasse der Proben beschrieben und vorgestellt.},
  language  = {de}
}
@article{PieronekKleefeld2024,
  author    = {Pieronek, Lukas and Kleefeld, Andreas},
  title     = {On trajectories of complex-valued interior transmission eigenvalues},
  series = {Inverse problems and imaging : IPI},
  volume    = {18},
  journal   = {Inverse problems and imaging : IPI},
  number    = {2},
  publisher = {AIMS},
  address   = {Springfield, Mo},
  issn      = {1930-8337 (Print)},
  doi       = {10.3934/ipi.2023041},
  pages     = {480 -- 516},
  year      = {2024},
  abstract  = {This paper investigates the interior transmission problem for homogeneous media via eigenvalue trajectories parameterized by the magnitude of the refractive index. In the case that the scatterer is the unit disk, we prove that there is a one-to-one correspondence between complex-valued interior transmission eigenvalue trajectories and Dirichlet eigenvalues of the Laplacian which turn out to be exactly the trajectorial limit points as the refractive index tends to infinity. For general simply-connected scatterers in two or three dimensions, a corresponding relation is still open, but further theoretical results and numerical studies indicate a similar connection.},
  language  = {en}
}
@article{SchoppRohrbachLangeretal.2024,
  author    = {Schopp, Christoph and Rohrbach, Felix and Langer, Luc and Heuermann, Holger},
  title     = {Detection of welding wire length by active S11 measurement},
  series = {IEEE Transactions on Plasma Science},
  journal   = {IEEE Transactions on Plasma Science},
  number    = {Early Access},
  publisher = {IEEE},
  issn      = {0093-3813 (Print)},
  doi       = {10.1109/TPS.2024.3356659},
  pages     = {1 -- 6},
  year      = {2024},
  abstract  = {A novel method to determine the extruded length of a metallic wire for a directed energy deposition (DED) process using a microwave (MW) plasma jet with a straight-through wire feed is presented. The method is based on the relative comparison of the measured frequency response obtained by the large-signal scattering parameter (Hot-S) technique. In the practical working range, repeatability of less than 6\% for a nonactive plasma and 9\% for the active plasma state is found. Measurements are conducted with a focus on a simple solution to decrease the processing time and reduce the integration time of the process into the existing hardware. It is shown that monitoring a single frequency for magnitude and phase changes is sufficient to achieve good accuracy. A combination of different measurement values to determine the length is possible. The applicability to different diameter of the same material is shown as well as a contact detection of the wire and metallic substrate.},
  language  = {en}
}