Eldorado - Repository of the TU Dortmund
Resources for and from Research, Teaching and Studying
This is the institutional repository of the TU Dortmund. Ressources for Research, Study and Teaching are archived and made publicly available.
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Predatory Publishing
(2025) Andreas, Siess
This article investigates the ramifications of predatory publishing for the integrity of research and public trust in science. It delineates the phenomenon as the dissemination of scholarly works not subject to quality assurance and explores the motivation of both publishers and researchers to engage with such outlets. While the prevalence of predatory practices within academic databases and the complexities in distinguishing legitimate journals from predatory ones are critically examined, strategies to combat predatory publishing are also outlined.
Resilience Upgrading Guide
(2025) Du, Juan; Islam, Sonia; Son, Ngo Thanh; Bien, Vu Thanh; Natakun, Boonanan; Liss, Bethany; Puntub, Wiryia; Greiving, Stefan; Magnaye, Dina Cartagena; Lengner, Felix; van den Berg, Lea; Caytiles, John Patrick P.
The findings and recommendations in this Guide are grounded in extensive empirical research conducted in
the Phillipines, Thailand and Vietnam. Data was collected through a combination of site observations, household
surveys, on-site focus group discussions, community workshops, and a series of back-to-back workshops
including a Gaming Simulation workshop—methods that enabled a deep understanding of local realities and
resident perspectives. These efforts were made possible through close collaboration with local partner organizations
who led and facilitated engagement with communities. While the data collection was a joint endeavour,
TU Dortmund was primarily responsible for the processing, interpretation and synthesis of the data presented
in this publication. This Guide shares field-based insights and recommendations intended to inform and inspire
local adaptation efforts and should be interpreted in light of specific local contexts and policies.
Abrasive finishing of surface structures with diamond-coated foams
(2024-04-26) Kipp, Monika; Peters, Jan; Platt, Timo; Biermann, Dirk
Finishing of structured surfaces is a challenging task in the manufacturing of functional surfaces. This is due to the aim of reducing the overlaying surface roughness while preserving the general surface structure. Therefore, there is the need for tailored tool concepts concerning the abrasive finishing. In this case, diamond-coated foams are used for the application of finishing surfaces, structured by high-feed milling. The quantitative evaluation by means of area-based roughness parameters and the qualitative observation of the changes in the surface profiles emphasise the capability to smoothen the surface without affecting the functional structure.
Acute exercise boosts NAD+ metabolism of human peripheral blood mononuclear cells
(2024-11-03) Walzik, David; Joisten, Niklas; Schenk, Alexander; Trebing, Sina; Schaaf, Kirill; Metcalfe, Alan J; Spiliopoulou, Polyxeni; Hiefner, Johanna; McCann, Adrian; Watzl, Carsten; Ueland, Per Magne; Gehlert, Sebastian; Worthmann, Anna; Brenner, Charles; Zimmer, Philipp
Nicotinamide adenine dinucleotide (NAD+) coenzymes are the central electron carriers in biological energy metabolism. Low NAD+ levels are proposed as a hallmark of ageing and several diseases, which has given rise to therapeutic strategies that aim to tackle these conditions by boosting NAD+ levels. As a lifestyle factor with preventive and therapeutic effects, exercise increases NAD+ levels across various tissues, but so far human trials are mostly focused on skeletal muscle. Given that immune cells are mobilized and redistributed in response to acute exercise, we conducted two complementary trials to test the hypothesis that a single exercise session alters NAD+ metabolism of peripheral blood mononuclear cells (PBMCs). In a randomized crossover trial (DRKS00017686) with 24 young adults (12 female) we show that acute exercise increases gene expression and protein abundance of several key NAD+ metabolism enzymes with high conformity between high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT). In a longitudinal exercise trial (DRKS00029105) with 12 young adults (6 female) we confirm these results and reveal that – similar to skeletal muscle – NAD+ salvage is pivotal for PBMCs in response to exercise. Nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme of NAD+ salvage pathway, displayed a pronounced increase in gene expression during exercise, which was accompanied by elevated intracellular NAD+ levels and reduced serum levels of the NAD+ precursor nicotinamide. These results demonstrate that acute exercise triggers NAD+ biosynthesis of human PBMCs with potential implications for immunometabolism, immune effector function, and immunological exercise adaptions.
A comparative study of handheld augmented reality interaction techniques for developing AR instructions using AR authoring tools
(2024-11-17) Hönemann, Kay; Konopka, Björn; Prilla, Michael; Wiesche, Manuel
Augmented Reality (AR) instructions offer companies tremendous savings potential. However, developing these AR instructions has traditionally been challenging due to the need for programming skills and spatial knowledge. To address this complexity, industry and academia are working to simplify AR development. A crucial aspect of this process is the accurate positioning of AR content within the physical environment, which requires effective AR interaction techniques that enable full 3D manipulation of AR elements. In this study, we conducted an experimental comparison of three different AR interaction techniques with 55 participants to empirically assess their performance, workload, and user satisfaction across tasks related to AR instruction development. Our findings contribute to the design of future AR instructions and AR authoring tools, emphasizing the importance of evaluating AR interaction techniques that can be utilized by users without programming experience tailored to the specific needs of the intended application domain.