@article{StrausKokotKravanjaetal., author = {Straus, Izidor and Kokot, Gašper and Kravanja, Gaia and Hribar, Luka and Kriegl, Raphael and Shamonin (Chamonine), Mikhail and Jezeršek, Matija and Drevenšek-Olenik, Irena}, title = {Dynamically tunable lamellar surface structures from magnetoactive elastomers driven by a uniform magnetic field}, series = {Soft Matter}, volume = {Vol. 19}, journal = {Soft Matter}, publisher = {Royal Society of Chemistry}, doi = {10.1039/D3SM00012E}, pages = {3357 -- 3365}, abstract = {Stimuli responsive materials are key ingredients for any application that requires dynamically tunable or on-demand responses. In this work we report experimental and theoretical investigation of magnetic-field driven modifications of soft-magnetic elastomers whose surface was processed by laser ablation into lamellar microstructures that can be manipulated by a uniform magnetic field. We present a minimal hybrid model that elucidates the associated deflection process of the lamellae and explains the lamellar structure frustration in terms of dipolar magnetic forces arising from the neighbouring lamellae. We experimentally determine the magnitude of the deflection as a function of magnetic flux density and explore the dynamic response of lamellae to fast changes in a magnetic field. A relationship between the deflection of lamellae and modifications of the optical reflectance of the lamellar structures is resolved.}, language = {en} } @article{LauerCorsten, author = {Lauer, Norina and Corsten, Sabine}, title = {Selbstorganisierte Selbsthilfegruppen bei Menschen mit Aphasie}, series = {selbsthilfegruppenjahrbuch}, volume = {2022/23}, journal = {selbsthilfegruppenjahrbuch}, publisher = {Deutsche Arbeitsgemeinschaft Selbsthilfegruppen e.V.}, address = {Gießen}, issn = {1616-0665}, pages = {90 -- 100}, abstract = {Menschen mit einer erworbenen Sprachst{\"o}rung, Aphasie, erleben aufgrund ihrer Kommunikationseinschr{\"a}nkungen und der damit einhergehenden reduzierten Teilhabe eine verminderte Lebensqualit{\"a}t. Aphasie-Selbsthilfegruppen k{\"o}nnen Inklusion und Selbstwerterleben der Betroffenen besonders dann f{\"o}rdern, wenn sie von betroffenen Personen selbst geleitet werden. In dem hier vorgestellten Forschungsprojekt Selbsthilfegruppenarbeit bei Aphasie zur Steigerung der Lebensqualit{\"a}t und Kompetenz (shalk) wurde untersucht, wie von Aphasie betroffene Menschen auf die {\"U}bernahme einer Gruppenleitung vorbereitet und bei der Umsetzung begleitet werden k{\"o}nnen, um die Lebensqualit{\"a}t der betroffenen Leitungspersonen und auch der Gruppenteilnehmenden zu steigern.}, subject = {Selbsthilfe}, language = {de} } @article{PangerlMoserMuelleretal., author = {Pangerl, Jonas and Moser, Elisabeth and M{\"u}ller, Max and Weigl, Stefan and Jobst, Simon and R{\"u}ck, Thomas and Bierl, Rudolf and Matysik, Frank-Michael}, title = {A sub-ppbv-level Acetone and Ethanol Quantum Cascade Laser Based Photoacoustic Sensor- Characterization and Multi-Component Spectra Recording in Synthetic Breath}, series = {Photoacoustics}, volume = {30}, journal = {Photoacoustics}, publisher = {Elsevier}, issn = {2213-5979}, doi = {10.1016/j.pacs.2023.100473}, pages = {1 -- 12}, abstract = {Trace gas analysis in breath is challenging due to the vast number of different components. We present a highly sensitive quantum cascade laser based photoacoustic setup for breath analysis. Scanning the range between 8263 and 8270 nm with a spectral resolution of 48 pm, we are able to quantify acetone and ethanol within a typical breath matrix containing water and CO2. We photoacoustically acquired spectra within this region of mid-infra-red light and prove that those spectra do not suffer from non-spectral interferences. The purely additive behavior of a breath sample spectrum was verified by comparing it with the independently acquired single component spectra using Pearson and Spearman correlation coefficients. A previously presented simulation approach is improved and an error attribution study is presented. With a 3σ detection limit of 6.5 ppbv in terms of ethanol and 250 pptv regarding acetone, our system is among the best performing presented so far.}, language = {en} } @article{WinterspergerDommertEhmeretal., author = {Wintersperger, Karen and Dommert, Florian and Ehmer, Thomas and Hoursanov, Andrey and Klepsch, Johannes and Mauerer, Wolfgang and Reuber, Georg and Strohm, Thomas and Yin, Ming and Luber, Sebastian}, title = {Neutral Atom Quantum Computing Hardware: Performance and End-User Perspective}, series = {EPJ Quantum Technology}, volume = {10}, journal = {EPJ Quantum Technology}, publisher = {Springer Nature}, doi = {10.1140/epjqt/s40507-023-00190-1}, pages = {27}, abstract = {We present an industrial end-user perspective on the current state of quantum computing hardware for one specific technological approach, the neutral atom platform. Our aim is to assist developers in understanding the impact of the specific properties of these devices on the effectiveness of algorithm execution. Based on discussions with different vendors and recent literature, we discuss the performance data of the neutral atom platform. Specifically, we focus on the physical qubit architecture, which affects state preparation, qubit-to-qubit connectivity, gate fidelities, native gate instruction set, and individual qubit stability. These factors determine both the quantum-part execution time and the end-to-end wall clock time relevant for end-users, but also the ability to perform fault-tolerant quantum computation in the future. We end with an overview of which applications have been shown to be well suited for the peculiar properties of neutral atom-based quantum computers.}, language = {en} } @article{KnoedlerKnoedlerKaukeNavarroetal., author = {Kn{\"o}dler, Leonard and Knoedler, Samuel and Kauke-Navarro, Martin and Kn{\"o}dler, Christoph and H{\"o}fer, Simon and B{\"a}cher, Helena and Gassner, Ulrich M. and Machens, Hans-G{\"u}nther and Prantl, Lukas and Panayi, Adriana C.}, title = {Three-dimensional Medical Printing and Associated Legal Issues in Plastic Surgery: A Scoping Review}, series = {Plastic \& Reconstructive Surgery-Global Open}, volume = {11}, journal = {Plastic \& Reconstructive Surgery-Global Open}, number = {4}, publisher = {Wolters Kluwer}, issn = {2169-7574}, doi = {10.1097/GOX.0000000000004965}, abstract = {Three-dimensional printing (3DP) represents an emerging field of surgery. 3DP can facilitate the plastic surgeon's workflow, including preoperative planning, intraoperative assistance, and postoperative follow-up. The broad clinical application spectrum stands in contrast to the paucity of research on the legal framework of 3DP. This imbalance poses a potential risk for medical malpractice lawsuits. To address this knowledge gap, we aimed to summarize the current body of legal literature on medical 3DP in the US legal system. By combining the promising clinical use of 3DP with its current legal regulations, plastic surgeons can enhance patient safety and outcomes.}, language = {en} } @article{KratzerWestnerStrahringer, author = {Kratzer, Simon and Westner, Markus and Strahringer, Susanne}, title = {Factors for Fractional CIO Engagement Success}, series = {Information \& Management}, volume = {60}, journal = {Information \& Management}, publisher = {Elsevier}, issn = {0378-7206}, doi = {10.1016/j.im.2023.103793}, abstract = {As small- to medium-sized enterprises struggle with IT management, an increasing number appoint Fractional CIOs, i.e., CIOs that work part-time for multiple organizations simultaneously. We use Q-methodology to empirically evaluate the relative importance of factors for Fractional CIO engagement success and find that trust, top management team support, and the Fractional CIO's integrity are most important. Further, we identify three groups of Fractional CIOs: Strategic IT Advisors, Full-ownership CIOs, and Change Agents. Our results guide organizations when hiring and working with Fractional CIOs and provide the basis for further research on Fractional CIO archetypes.As small- to medium-sized enterprises struggle with IT management, an increasing number appoint Fractional CIOs, i.e., CIOs that work part-time for multiple organizations simultaneously. We use Q-methodology to empirically evaluate the relative importance of factors for Fractional CIO engagement success and find that trust, top management team support, and the Fractional CIO's integrity are most important. Further, we identify three groups of Fractional CIOs: Strategic IT Advisors, Full-ownership CIOs, and Change Agents. Our results guide organizations when hiring and working with Fractional CIOs and provide the basis for further research on Fractional CIO archetypes.}, language = {en} } @article{RueckMuellerJobstetal., author = {R{\"u}ck, Thomas and M{\"u}ller, Max and Jobst, Simon and Weigl, Stefan and Pangerl, Jonas and Bierl, Rudolf and Matysik, Frank-Michael}, title = {Digital Twin of a Photoacoustic Trace Gas Sensor for Monitoring Methane in Complex Gas Compositions}, series = {Sensors and Actuators B: Chemical}, journal = {Sensors and Actuators B: Chemical}, number = {378}, doi = {10.1016/j.snb.2022.133119}, abstract = {The digitalization of industrial processes requires smart sensor systems. Photoacoustic spectroscopy is well suited for this purpose as it allows for small-sized and low-cost trace gas analysis. However, the method is susceptible to changes in measurement conditions and standard calibration routines often fail to correct for all changes. We therefore created a Digital Twin (DT) of a photoacoustic trace gas sensor for methane and evaluated it regarding variations in gas composition (CH4, N2, O2, CO2, H2O), temperature and pressure. With a mean absolute percentage error of 0.8 \% the accuracy of the sensor after DT compensation significantly exceeds the 24 \% achieved based on standard calibration in nitrogen. For the first time, we can fully analytically compute the photoacoustic signal under moderate ambient conditions with an error in the ppbV range by taking a holistic approach. Assuming knowledge of the underlying energy transfer processes, the model of this Digital Twin can be adapted to any microphone based photoacoustic sensor for monitoring any analyte species.}, language = {en} } @article{GebhardtSchlampEhrlichetal., author = {Gebhardt, Jakob and Schlamp, Matthias and Ehrlich, Ingo and Hiermaier, Stefan}, title = {Low-velocity impact behavior of elliptic curved composite structures}, series = {International Journal of Impact Engineering}, volume = {180}, journal = {International Journal of Impact Engineering}, publisher = {Elsevier}, doi = {10.1016/j.ijimpeng.2023.104663}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-59304}, pages = {8}, abstract = {Although many composite structures are inconsistently curved, such as the leading edges of aircraft wings, the variety of research in impact engineering is almost limited to the impact performance of plates or cylindrically curved specimens. It is not known whether the findings obtained from standardized tests can be transferred to curved structures or which adaptions are required. Therefore, a deeper understanding of the deformation and damage behavior of inconsistently curved structures is essential to transfer the observed impact behavior of flat specimens to general curved structures and therefore to utilize the full lightweight potential of a load-specific design. An accurate description of the procedure as well as the results of the experimental and numerical study of the low-velocity impact behavior of differently single-curved elliptic specimens is presented. To close the research gap of the impact behavior of geometries with curvatures between the plates and simplified leading edges, novel specimens geometries have been derived from established impact test standards. Glassfiber-reinforced specimens are subjected to an instrumented impact test at constant impact energy. This is numerically investigated by a stacked-layer model, which used cohesive zone modeling to enable the simulation of matrix cracking, fiber fracture and delamination. The resulting projected damage areas, as well as the force and deflection histories, were evaluated and section cuts were examined to discuss the damage morphology, formation and propagation process. Significant effects on maximum deflection, compliance and dynamic behavior on the size and morphology of damage were found.}, language = {en} } @article{SchliermannRockSchrollDecker, author = {Schliermann, Rainer and Rock, Jasmin and Schroll-Decker, Irmgard}, title = {Erwerb von sozialer und emotionaler Kompetenz im Bachelorstudium der Sozialen Arbeit: Eine explorative Ann{\"a}herung}, series = {Zeitschrift f{\"u}r Bildungsforschung}, volume = {13}, journal = {Zeitschrift f{\"u}r Bildungsforschung}, number = {1}, publisher = {Springer Nature}, doi = {10.1007/s35834-023-00396-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-59260}, pages = {335 -- 350}, language = {de} } @article{StrasserStrahringerWestner, author = {Strasser, Artur and Strahringer, Susanne and Westner, Markus}, title = {Determinants of success and failure of knowledge transfer in information systems offshoring}, series = {International Journal of Information Technology and Management}, volume = {22}, journal = {International Journal of Information Technology and Management}, number = {1/2}, publisher = {Inderscience}, issn = {1741-5179}, doi = {10.1504/IJITM.2023.10055151}, abstract = {The transfer of knowledge from client to service provider poses major challenges in information systems (IS) offshoring projects. Knowledge transfer directly affects IS offshoring success. Therefore, associated challenges must be overcome. Our study examines the determinants of success and failure of knowledge transfer in IS offshoring projects based on a ranking-type Delphi study. We questioned 32 experts from Germany, each with more than ten years of experience in near- or offshore initiatives to seek a consensus among them. We identified 19 success and 20 failure determinants. These determinants are ranked in order of importance using best-worst scaling. Aspects of closer cooperation are critical for effective knowledge transfer. This includes regular collaboration, willingness to help and support, and mutual trust. In contrast, critical determinants of failure are concerned with fears and fluctuation of human resources. Hidden ambiguities or knowledge gaps, an unwillingness and disability to share knowledge, and high fluctuation of human resources negatively impact knowledge transfer.}, language = {en} }