@techreport{BirmansTamborninoUllrich2024,
  type      = {Working Paper},
  author    = {Birmans, Katrin and Tambornino, Philipp and Ullrich, Anna Valentine},
  title     = {Bevor Sie Coscine nutzen - Handreichung f{\"u}r Forschende an HAW},
  doi       = {10.5281/zenodo.12158546},
  pages     = {2 Seiten},
  year      = {2024},
  abstract  = {Um die Forschungsdatenmanagement-Plattform Coscine optimal f{\"u}r Forschungsprojekte nutzen zu k{\"o}nnen, ist es sinnvoll, einige Fragen im Vorhinein zu kl{\"a}ren. So k{\"o}nnen aufwendige {\"A}nderungen der Datenverwaltung im Nachhinein vermieden werden. Hierzu bietet die Handreichung hilfreiche Leitfragen und Erl{\"a}uterungen f{\"u}r Forschende und FDM-Service-Personal an HAW in NRW (DH.NRW-Hochschulen). FDM-Service-Mitarbeitende k{\"o}nnen die Handreichung in ihrer Beratung zu Coscine einsetzen und mit der Eingabemaske in der Kopfzeile des Dokuments auf ihre Hochschule anpassen.},
  language  = {de}
}
@techreport{HoffmannUllrich2024,
  type      = {Working Paper},
  author    = {Hoffmann, Sarah and Ullrich, Anna Valentine},
  title     = {30 Minuten FDM f{\"u}r HAW. Ein Informationsformat f{\"u}r Forschende an HAW in NRW},
  doi       = {10.5281/zenodo.12569282},
  pages     = {1 Seite},
  year      = {2024},
  abstract  = {Wie kann man das Thema Forschungsdatenmanagement (FDM) konkret und anwendbar f{\"u}r Forschende gestalten, die bisher noch wenig Kontakt damit hatten? Auf diese Frage gibt das Konzept „30 Minuten FDM f{\"u}r HAW. Ein Informationsformat f{\"u}r Forschende an HAW in NRW" eine Antwort. Es entstand als Projektarbeit im Zertifikatskurs Forschungsdatenmanagement 2023/24},
  language  = {de}
}
@techreport{BirmansSchickTamborninoetal.2024,
  type      = {Working Paper},
  author    = {Birmans, Katrin and Schick, Elena and Tambornino, Philipp and Ullrich, Anna Valentine},
  title     = {Ingenieurwissenschaften im Fokus: Zug{\"a}nge zu einem effektiven Forschungsdatenmanagement an HAW},
  doi       = {10.5281/zenodo.12545429},
  pages     = {49 Seiten},
  year      = {2024},
  abstract  = {Im Rahmen der Love Data Week vom 12. bis 16.02.2024 haben die BMBF-Projekte FDM2_TH_Koeln der TH K{\"o}ln (FK 16FDFH105) und Persist@HAW der FH Aachen (FK 16FDFH129) am 15.02.2024 gemeinsam eine Online-Veranstaltung mit dem Titel „Ingenieurwissenschaften im Fokus: Zug{\"a}nge zu einem effektiven Forschungsdatenmanagement an HAW" angeboten. Diese richtete sich an Forschende aus den Ingenieurwissenschaften, die einen ersten Zugang zum Thema Forschungsdatenmanagement (FDM) suchen und erfahren m{\"o}chten, welche speziellen Angebote f{\"u}r die Daten aus den Ingenieurwissenschaften existieren. In der Veranstaltung wurden wesentliche Aspekte des Forschungsdatenmanagements entlang des Datenlebenszyklus beleuchtet. Ziel war es, den Teilnehmenden praxisnahe Einblicke und Hilfestellungen zu einem effektiven Umgang mit Forschungsdaten an Hochschulen f{\"u}r Angewandte Wissenschaften (HAW) zu bieten. Durch Beispiele und konkrete Empfehlungen wurde das Thema zug{\"a}nglich gemacht.},
  language  = {de}
}
@incollection{Fissabre2024,
  author    = {Fissabre, Anke},
  title     = {Eine moderne Sainte-Chapelle in K{\"o}ln. Otto Bartnings Stahlkirche auf der Pressa 1928},
  series = {Baugedanken: Einsichten, Ansichten, Aussichten f{\"u}r Jan Pieper zum 80. Geburtstag},
  booktitle = {Baugedanken: Einsichten, Ansichten, Aussichten f{\"u}r Jan Pieper zum 80. Geburtstag},
  editor    = {Naujokat, Anke and Hake, Verena and Schindler, Bruno and Sch{\"o}tten, Bj{\"o}rn},
  publisher = {Geym{\"u}ller Verag f{\"u}r Architektur},
  address   = {Aachen},
  isbn      = {978-3-943164-87-9},
  pages     = {66 -- 81},
  year      = {2024},
  language  = {de}
}
@article{AliaziziOezsoyluBakhshiSichanietal.2024,
  author    = {Aliazizi, Fereshteh and {\"O}zsoylu, Dua and Bakhshi Sichani, Soroush and Khorshid, Mehran and Glorieux, Christ and Robbens, Johan and Sch{\"o}ning, Michael J. and Wagner, Patrick},
  title     = {Development and Calibration of a Microfluidic, Chip-Based Sensor System for Monitoring the Physical Properties of Water Samples in Aquacultures},
  series = {Micromachines},
  volume    = {15},
  journal   = {Micromachines},
  number    = {6},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2072-666X},
  doi       = {10.3390/mi15060755},
  year      = {2024},
  abstract  = {In this work, we present a compact, bifunctional chip-based sensor setup that measures the temperature and electrical conductivity of water samples, including specimens from rivers and channels, aquaculture, and the Atlantic Ocean. For conductivity measurements, we utilize the impedance amplitude recorded via interdigitated electrode structures at a single triggering frequency. The results are well in line with data obtained using a calibrated reference instrument. The new setup holds for conductivity values spanning almost two orders of magnitude (river versus ocean water) without the need for equivalent circuit modelling. Temperature measurements were performed in four-point geometry with an on-chip platinum RTD (resistance temperature detector) in the temperature range between 2 °C and 40 °C, showing no hysteresis effects between warming and cooling cycles. Although the meander was not shielded against the liquid, the temperature calibration provided equivalent results to low conductive Milli-Q and highly conductive ocean water. The sensor is therefore suitable for inline and online monitoring purposes in recirculating aquaculture systems.},
  language  = {en}
}
@article{ChwallekNawrathKrastinaetal.2024,
  author    = {Chwallek, Constanze and Nawrath, Lara and Krastina, Anzelika and Bruksle, Ieva},
  title     = {Supportive research on sustainable entrepreneurship and business practices},
  series = {SECA Sustainable Entrepreneurship for Climate Action},
  journal   = {SECA Sustainable Entrepreneurship for Climate Action},
  number    = {3},
  publisher = {Lapland University of Applied Sciences Ltd},
  address   = {Rovaniemi},
  isbn      = {978-952-316-514-4 (pdf)},
  issn      = {2954-1654 (on-line publication)},
  pages     = {67 Seiten},
  year      = {2024},
  language  = {en}
}
@article{ClausnitzerKleefeld2024,
  author    = {Clausnitzer, Julian and Kleefeld, Andreas},
  title     = {A spectral Galerkin exponential Euler time-stepping scheme for parabolic SPDEs on two-dimensional domains with a C² boundary},
  series = {Discrete and Continuous Dynamical Systems - Series B},
  volume    = {29},
  journal   = {Discrete and Continuous Dynamical Systems - Series B},
  number    = {4},
  publisher = {AIMS},
  address   = {Springfield},
  issn      = {1531-3492},
  doi       = {10.3934/dcdsb.2023148},
  pages     = {1624 -- 1651},
  year      = {2024},
  abstract  = {We consider the numerical approximation of second-order semi-linear parabolic stochastic partial differential equations interpreted in the mild sense which we solve on general two-dimensional domains with a C² boundary with homogeneous Dirichlet boundary conditions. The equations are driven by Gaussian additive noise, and several Lipschitz-like conditions are imposed on the nonlinear function. We discretize in space with a spectral Galerkin method and in time using an explicit Euler-like scheme. For irregular shapes, the necessary Dirichlet eigenvalues and eigenfunctions are obtained from a boundary integral equation method. This yields a nonlinear eigenvalue problem, which is discretized using a boundary element collocation method and is solved with the Beyn contour integral algorithm. We present an error analysis as well as numerical results on an exemplary asymmetric shape, and point out limitations of the approach.},
  language  = {en}
}
@article{Golland2024,
  author    = {Golland, Alexander},
  title     = {Bußgelder bei Datenschutzverst{\"o}ßen durch Unternehmen},
  series = {NJW Neue Juristische Wochenschrift},
  journal   = {NJW Neue Juristische Wochenschrift},
  number    = {6},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  issn      = {0341-1915},
  pages     = {325 -- 329},
  year      = {2024},
  abstract  = {Bald eine Dekade ist es her, dass diese ann{\"a}hernd mantraartig wiederholte Phrase Unternehmen zur Umsetzung datenschutzrechtlicher Vorgaben incentivierte. Was ist davon geblieben? Nur wenige in Deutschland verh{\"a}ngte Bußgelder erreichten Millionenh{\"o}he. Hintergrund ist (auch) das deutsche Ordnungswidrigkeitenrecht, welches in einem Spannungsverh{\"a}ltnis zu den Vorgaben der DS-GVO steht. Ein Bußgeldbescheid der Berliner Datenschutzaufsicht gegen die Deutsche Wohnen sollte Ausl{\"o}ser eines langen, fortdauernden Rechtsstreits werden. Auf Vorlage des KG hatte der EuGH in der Rechtssache C-807/21 („Deutsche Wohnen") erstmals Gelegenheit, sich zur Frage der Bußgeldhaftung zu positionieren.},
  language  = {de}
}
@article{GollandSchroeer2024,
  author    = {Golland, Alexander and Schr{\"o}er, Jan-Erik},
  title     = {Error 404 im Vergabeverfahren: Datenschutz nicht gefunden?},
  series = {VergabeR},
  journal   = {VergabeR},
  number    = {2},
  publisher = {Wolters Kluwer},
  address   = {K{\"o}ln},
  issn      = {2366-2247},
  pages     = {75 -- 92},
  year      = {2024},
  abstract  = {Das Thema Datenschutz wurde bei der {\"o}ffentlichen Auftragsvergabe bislang vor allem in Bezug auf Drittlandtransfers personenbezogener Daten in die USA diskutiert. Jedoch spielt der Datenschutz f{\"u}r das Vergabeverfahren und f{\"u}r die Ausf{\"u}hrung datenschutzrelevanter Leistungen generell eine wesentliche Rolle. Gleichwohl herrschen bislang unter {\"o}ffentlichen Auftraggebern Schwierigkeiten, datenschutzrechtlich relevante Fallkonstellationen zu erkennen, die m{\"o}glichen Risiken daraus abzuleiten und, sofern dies gelingt, diesen Risiken angemessen zu begegnen. Der vorliegende Beitrag befasst sich mit der datenschutzrechtlichen Verantwortlichkeit, ihren Folgen und den daraus resultierenden Konsequenzen f{\"u}r die Gestaltung von Vergabeverfahren und Vergabeunterlagen.},
  language  = {de}
}
@article{GollandSchroeer2024,
  author    = {Golland, Alexander and Schr{\"o}er, Jan-Erik},
  title     = {No risk, no fun? Ber{\"u}cksichtigung datenschutzrechtlicher Risiken im Vergabeverfahren},
  series = {DSB Datenschutz-Berater},
  journal   = {DSB Datenschutz-Berater},
  number    = {5},
  publisher = {DFV Mediengruppe},
  address   = {Frankfurt a.M.},
  isbn      = {0170-7256},
  issn      = {No risk, no fun? Ber{\"u}cksichtigung datenschutzrechtlicher Risiken im Vergabeverfahren},
  pages     = {114 -- 117},
  year      = {2024},
  language  = {de}
}
@article{Golland2024,
  author    = {Golland, Alexander},
  title     = {Datenschutz beim Einsatz k{\"u}nstlicher Intelligenz im Unternehmen},
  series = {NWB},
  journal   = {NWB},
  number    = {6},
  publisher = {NWB},
  address   = {Herne},
  issn      = {0028-3460},
  pages     = {425 -- 432},
  year      = {2024},
  abstract  = {Seit Ende 2022 pr{\"a}gt das Schlagwort „K{\"u}nstliche Intelligenz" (KI) nicht nur den rechtswissenschaftlichen Diskurs. Die allgemeine Verf{\"u}gbarkeit von generativen KI-Modellen, allen voran die großen Sprachmodelle (Large Language Models, kurz: LLM) wie ChatGPT von OpenAI oder Bing AI von Microsoft, erfreuen sich gr{\"o}ßter Beliebtheit: LLM sind in der Lage, auf Grundlage statistischer Methoden - eine entsprechende Schnittstelle (Interface) vorausgesetzt - auch technisch wenig versierten Nutzern verst{\"a}ndliche Antworten auf ihre Fragen zu liefern. Dabei werden nicht nur umfassend Nutzerdaten verarbeitet, sondern auch auf weitere personenbezogene Daten zugegriffen sowie neue Daten erzeugt. Der Beitrag geht der Frage nach, welche spezifischen datenschutzrechtlichen Herausforderungen sich f{\"u}r Unternehmen beim Einsatz solcher LLM stellen.},
  language  = {de}
}
@article{OehlenschlaegerVolkmarStiefelmaieretal.2024,
  author    = {Oehlenschl{\"a}ger, Katharina and Volkmar, Marianne and Stiefelmaier, Judith and Langsdorf, Alexander and Holtmann, Dirk and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {New insights into the influence of pre-culture on robust solvent production of C. acetobutylicum},
  series = {Applied Microbiology and Biotechnology},
  volume    = {108},
  journal   = {Applied Microbiology and Biotechnology},
  publisher = {Springer},
  address   = {Berlin, Heidelberg},
  issn      = {1432-0614},
  doi       = {10.1007/s00253-023-12981-8},
  pages     = {10 Seiten},
  year      = {2024},
  abstract  = {Clostridia are known for their solvent production, especially the production of butanol. Concerning the projected depletion of fossil fuels, this is of great interest. The cultivation of clostridia is known to be challenging, and it is difficult to achieve reproducible results and robust processes. However, existing publications usually concentrate on the cultivation conditions of the main culture. In this paper, the influence of cryo-conservation and pre-culture on growth and solvent production in the resulting main cultivation are examined. A protocol was developed that leads to reproducible cultivations of Clostridium acetobutylicum. Detailed investigation of the cell conservation in cryo-cultures ensured reliable cell growth in the pre-culture. Moreover, a reason for the acid crash in the main culture was found, based on the cultivation conditions of the pre-culture. The critical parameter to avoid the acid crash and accomplish the shift to the solventogenesis of clostridia is the metabolic phase in which the cells of the pre-culture were at the time of inoculation of the main culture; this depends on the cultivation time of the pre-culture. Using cells from the exponential growth phase to inoculate the main culture leads to an acid crash. To achieve the solventogenic phase with butanol production, the inoculum should consist of older cells which are in the stationary growth phase. Considering these parameters, which affect the entire cultivation process, reproducible results and reliable solvent production are ensured.},
  language  = {en}
}
@unpublished{SchmuellingGuetzlaffCzupalla2024,
  author    = {Schm{\"u}lling, Max and G{\"u}tzlaff, Joel and Czupalla, Markus},
  title     = {A thermal simulation environment for moving objects on the lunar surface},
  doi       = {10.21203/rs.3.rs-3902363/v1},
  pages     = {12 Seiten},
  year      = {2024},
  abstract  = {This paper presents a thermal simulation environment for moving objects on the lunar surface. The goal of the thermal simulation environment is to enable the reliable prediction of the temperature development of a given object on the lunar surface by providing the respective heat fluxes for a mission on a given travel path. The user can import any object geometry and freely define the path that the object should travel. Using the path of the object, the relevant lunar surface geometry is imported from a digital elevation model. The relevant parts of the lunar surface are determined based on distance to the defined path. A thermal model of these surface sections is generated, consisting of a porous layer on top and a denser layer below. The object is moved across the lunar surface, and its inclination is adapted depending on the slope of the terrain below it. Finally, a transient thermal analysis of the object and its environment is performed at several positions on its path and the results are visualized. The paper introduces details on the thermal modeling of the lunar surface, as well as its verification. Furthermore, the structure of the created software is presented. The robustness of the environment is verified with the help of sensitivity studies and possible improvements are presented.},
  language  = {en}
}
@article{AyalaHarrisKleefeld2024,
  author    = {Ayala, Rafael Ceja and Harris, Isaac and Kleefeld, Andreas},
  title     = {Direct sampling method via Landweber iteration for an absorbing scatterer with a conductive boundary},
  series = {Inverse Problems and Imaging},
  volume    = {18},
  journal   = {Inverse Problems and Imaging},
  number    = {3},
  publisher = {AIMS},
  address   = {Springfield},
  issn      = {1930-8337},
  doi       = {10.3934/ipi.2023051},
  pages     = {708 -- 729},
  year      = {2024},
  abstract  = {In this paper, we consider the inverse shape problem of recovering isotropic scatterers with a conductive boundary condition. Here, we assume that the measured far-field data is known at a fixed wave number. Motivated by recent work, we study a new direct sampling indicator based on the Landweber iteration and the factorization method. Therefore, we prove the connection between these reconstruction methods. The method studied here falls under the category of qualitative reconstruction methods where an imaging function is used to recover the absorbing scatterer. We prove stability of our new imaging function as well as derive a discrepancy principle for recovering the regularization parameter. The theoretical results are verified with numerical examples to show how the reconstruction performs by the new Landweber direct sampling method.},
  language  = {en}
}
@inproceedings{KahraBreussKleefeldetal.2024,
  author    = {Kahra, Marvin and Breuß, Michael and Kleefeld, Andreas and Welk, Martin},
  title     = {An Approach to Colour Morphological Supremum Formation Using the LogSumExp Approximation},
  series = {Discrete Geometry and Mathematical Morphology},
  booktitle = {Discrete Geometry and Mathematical Morphology},
  editor    = {Brunetti, Sara and Frosini, Andrea and Rinaldi, Simone},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-031-57793-2},
  doi       = {10.1007/978-3-031-57793-2_25},
  pages     = {325 -- 337},
  year      = {2024},
  abstract  = {Mathematical morphology is a part of image processing that has proven to be fruitful for numerous applications. Two main operations in mathematical morphology are dilation and erosion. These are based on the construction of a supremum or infimum with respect to an order over the tonal range in a certain section of the image. The tonal ordering can easily be realised in grey-scale morphology, and some morphological methods have been proposed for colour morphology. However, all of these have certain limitations. In this paper we present a novel approach to colour morphology extending upon previous work in the field based on the Loewner order. We propose to consider an approximation of the supremum by means of a log-sum exponentiation introduced by Maslov. We apply this to the embedding of an RGB image in a field of symmetric 2x2 matrices. In this way we obtain nearly isotropic matrices representing colours and the structural advantage of transitivity. In numerical experiments we highlight some remarkable properties of the proposed approach.},
  language  = {en}
}
@article{Bung2024,
  author    = {Bung, Daniel Bernhard},
  title     = {Kamerabasierte Fließtiefen- und Geschwindigkeitsmessungen},
  series = {Wasserwirtschaft},
  volume    = {114},
  journal   = {Wasserwirtschaft},
  number    = {4},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  issn      = {0043-0978},
  pages     = {47 -- 53},
  year      = {2024},
  abstract  = {In der wasserbaulichen Forschung werden neben klassischen Messinstrumenten zunehmend kamerabasierte Verfahren genutzt. Diese erlauben neben der Bestimmung von Fließgeschwindigkeiten auch die Detektion der freien Wasseroberfl{\"a}che oder zeitliche Vermessung von Kolken. Durch die hohen r{\"a}umlichen und zeitlichen Aufl{\"o}sungen, welche neueste Kamerasensoren liefern, k{\"o}nnen neue Erkenntnisse in turbulenten, komplexen Str{\"o}mungen gewonnen werden. Auch in der Praxis k{\"o}nnen diese Verfahren mit geringem Aufwand wichtige Daten liefern.},
  language  = {de}
}
@article{SchopenNarayanBeckmannetal.2024,
  author    = {Schopen, Oliver and Narayan, Sriram and Beckmann, Marvin and Najmi, Aezid-Ul-Hassan and Esch, Thomas and Shabani, Bahman},
  title     = {An EIS approach to quantify the effects of inlet air relative humidity on the performance of proton exchange membrane fuel cells: a pathway to developing a novel fault diagnostic method},
  series = {International Journal of Hydrogen Energy},
  volume    = {58},
  journal   = {International Journal of Hydrogen Energy},
  number    = {8},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {0360-3199 (print)},
  issn      = {1879-3487 (online)},
  doi       = {10.1016/j.ijhydene.2024.01.218},
  pages     = {1302 -- 1315},
  year      = {2024},
  abstract  = {In this work, the effect of low air relative humidity on the operation of a polymer electrolyte membrane fuel cell is investigated. An innovative method through performing in situ electrochemical impedance spectroscopy is utilised to quantify the effect of inlet air relative humidity at the cathode side on internal ionic resistances and output voltage of the fuel cell. In addition, algorithms are developed to analyse the electrochemical characteristics of the fuel cell. For the specific fuel cell stack used in this study, the membrane resistance drops by over 39 \% and the cathode side charge transfer resistance decreases by 23 \% after increasing the humidity from 30 \% to 85 \%, while the results of static operation also show an increase of ∼2.2 \% in the voltage output after increasing the relative humidity from 30 \% to 85 \%. In dynamic operation, visible drying effects occur at < 50 \% relative humidity, whereby the increase of the air side stoichiometry increases the drying effects. Furthermore, other parameters, such as hydrogen humidification, internal stack structure, and operating parameters like stoichiometry, pressure, and temperature affect the overall water balance. Therefore, the optimal humidification range must be determined by considering all these parameters to maximise the fuel cell performance and durability. The results of this study are used to develop a health management system to ensure sufficient humidification by continuously monitoring the fuel cell polarisation data and electrochemical impedance spectroscopy indicators.},
  language  = {en}
}
@article{SchopenShahEschetal.2024,
  author    = {Schopen, Oliver and Shah, Neel and Esch, Thomas and Shabani, Bahman},
  title     = {Critical quantitative evaluation of integrated health management methods for fuel cell applications},
  series = {International Journal of Hydrogen Energy},
  volume    = {70},
  journal   = {International Journal of Hydrogen Energy},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0360-3199},
  doi       = {10.1016/j.ijhydene.2024.05.156},
  pages     = {370 -- 388},
  year      = {2024},
  abstract  = {Online fault diagnostics is a crucial consideration for fuel cell systems, particularly in mobile applications, to limit downtime and degradation, and to increase lifetime. Guided by a critical literature review, in this paper an overview of Health management systems classified in a scheme is presented, introducing commonly utilised methods to diagnose FCs in various applications. In this novel scheme, various Health management system methods are summarised and structured to provide an overview of existing systems including their associated tools. These systems are classified into four categories mainly focused on model-based and non-model-based systems. The individual methods are critically discussed when used individually or combined aimed at further understanding their functionality and suitability in different applications. Additionally, a tool is introduced to evaluate methods from each category based on the scheme presented. This tool applies the technique of matrix evaluation utilising several key parameters to identify the most appropriate methods for a given application. Based on this evaluation, the most suitable methods for each specific application are combined to build an integrated Health management system.},
  language  = {en}
}