TY - JOUR
AB - Abstract
Um global erfolgreich zu bleiben, wird es bald nicht mehr ausreichen, Kriterien wie ein gutes Produktdesign zu erfüllen. Stattdessen muss der Kundennutzen kontinuierlich über den Produktlebenszyklus hinaus gesteigert werden. Tech-Konzerne verzeichnen bereits Erfolge und verkörpern den Wandel schon heute. Vor diesem Hintergrund ist ein neues Leitbild in der Entwicklung und dem Betrieb von zukünftigen, technischen Systemen erforderlich. EngOps soll diesen Bedarf decken und steht für die agile Kollaboration zwischen Engineering und Operations. Alle Teile des Unternehmens sollen ständig miteinander kooperieren, um so beispielsweise wandelbare Produkte auch nach dem Verkauf entwickeln zu können.
AU - Anacker, Harald
AU - Dumitrescu, Roman
AU - Michels, Nico
AU - Rasor, Rik
ID - 33710
IS - 6
JF - Zeitschrift für wirtschaftlichen Fabrikbetrieb
KW - Management Science and Operations Research
KW - Strategy and Management
KW - General Engineering
SN - 2511-0896
TI - EngOps – Ein Leitbild für das agile Zusammenwirken von Engineering und Operations
VL - 117
ER -
TY - JOUR
AU - Kim, Sanghoon
AU - Pathak, Sachin
AU - Rhim, Sonny H.
AU - Cha, Jongin
AU - Jekal, Soyoung
AU - Hong, Soon Cheol
AU - Lee, Hyun Hwi
AU - Park, Sung‐Hun
AU - Lee, Han‐Koo
AU - Park, Jae‐Hoon
AU - Lee, Soogil
AU - Steinrück, Hans-Georg
AU - Mehta, Apurva
AU - Wang, Shan X.
AU - Hong, Jongill
ID - 33833
IS - 24
JF - Advanced Science
KW - General Physics and Astronomy
KW - General Engineering
KW - Biochemistry
KW - Genetics and Molecular Biology (miscellaneous)
KW - General Materials Science
KW - General Chemical Engineering
KW - Medicine (miscellaneous)
SN - 2198-3844
TI - Giant Orbital Anisotropy with Strong Spin–Orbit Coupling Established at the Pseudomorphic Interface of the Co/Pd Superlattice
VL - 9
ER -
TY - JOUR
AB -
Nowadays, an increasing number of applications uses deserialization. This technique, based on rebuilding the instance of objects from serialized byte streams, can be dangerous since it can open the application to attacks such as remote code execution (RCE) if the data to deserialize is originating from an untrusted source. Deserialization vulnerabilities are so critical that they are in OWASP’s list of top 10 security risks for web applications. This is mainly caused by faults in the development process of applications and by flaws in their dependencies, i.e., flaws in the libraries used by these applications. No previous work has studied deserialization attacks in-depth: How are they performed? How are weaknesses introduced and patched? And for how long are vulnerabilities present in the codebase? To yield a deeper understanding of this important kind of vulnerability, we perform two main analyses: one on attack gadgets, i.e., exploitable pieces of code, present in Java libraries, and one on vulnerabilities present in Java applications. For the first analysis, we conduct an exploratory large-scale study by running 256 515 experiments in which we vary the versions of libraries for each of the 19 publicly available exploits. Such attacks rely on a combination of
gadgets
present in one or multiple Java libraries. A gadget is a method which is using objects or fields that can be attacker-controlled. Our goal is to precisely identify library versions containing gadgets and to understand how gadgets have been introduced and how they have been patched. We observe that the modification of one innocent-looking detail in a class – such as making it
public
– can already introduce a gadget. Furthermore, we noticed that among the studied libraries, 37.5% are not patched, leaving gadgets available for future attacks.
For the second analysis, we manually analyze 104 deserialization vulnerabilities CVEs to understand how vulnerabilities are introduced and patched in real-life Java applications. Results indicate that the vulnerabilities are not always completely patched or that a workaround solution is proposed. With a workaround solution, applications are still vulnerable since the code itself is unchanged.
AU - Sayar, Imen
AU - Bartel, Alexandre
AU - Bodden, Eric
AU - Le Traon, Yves
ID - 33835
JF - ACM Transactions on Software Engineering and Methodology
KW - Software
SN - 1049-331X
TI - An In-depth Study of Java Deserialization Remote-Code Execution Exploits and Vulnerabilities
ER -
TY - JOUR
AU - Piskachev, Goran
AU - Späth, Johannes
AU - Budde, Ingo
AU - Bodden, Eric
ID - 33836
IS - 5
JF - Empirical Software Engineering
TI - Fluently specifying taint-flow queries with fluentTQL
VL - 27
ER -
TY - CONF
AU - Krishnamurthy, Ranjith
AU - Piskachev, Goran
AU - Bodden, Eric
ID - 33838
TI - To what extent can we analyze Kotlin programs using existing Java taint analysis tools?
ER -
TY - CONF
AU - Piskachev, Goran
AU - Dziwok, Stefan
AU - Koch, Thorsten
AU - Merschjohann, Sven
AU - Bodden, Eric
ID - 33837
TI - How far are German companies in improving security through static program analysis tools?
ER -
TY - JOUR
AB - We present a novel algorithm that allows us to gain detailed insight into the effects of sparsity in linear and nonlinear optimization, which is of great importance in many scientific areas such as image and signal processing, medical imaging, compressed sensing, and machine learning (e.g., for the training of neural networks). Sparsity is an important feature to ensure robustness against noisy data, but also to find models that are interpretable and easy to analyze due to the small number of relevant terms. It is common practice to enforce sparsity by adding the ℓ1-norm as a weighted penalty term. In order to gain a better understanding and to allow for an informed model selection, we directly solve the corresponding multiobjective optimization problem (MOP) that arises when we minimize the main objective and the ℓ1-norm simultaneously. As this MOP is in general non-convex for nonlinear objectives, the weighting method will fail to provide all optimal compromises. To avoid this issue, we present a continuation method which is specifically tailored to MOPs with two objective functions one of which is the ℓ1-norm. Our method can be seen as a generalization of well-known homotopy methods for linear regression problems to the nonlinear case. Several numerical examples - including neural network training - demonstrate our theoretical findings and the additional insight that can be gained by this multiobjective approach.
AU - Bieker, Katharina
AU - Gebken, Bennet
AU - Peitz, Sebastian
ID - 20731
IS - 11
JF - IEEE Transactions on Pattern Analysis and Machine Intelligence
TI - On the Treatment of Optimization Problems with L1 Penalty Terms via Multiobjective Continuation
VL - 44
ER -
TY - JOUR
AU - Kundisch, Dennis
AU - Muntermann, J.
AU - Oberländer, A. M.
AU - Rau, D.
AU - Röglinger, M.
AU - Schoormann, T.
AU - Szopinski, Daniel
ID - 23566
IS - 4
JF - Business & Information Systems Engineering
TI - An update for taxonomy designers: Methodological guidance from information systems research
VL - 64
ER -
TY - BOOK
AU - Eke, Norbert
AU - Zaimoglu , Feridun
ID - 33842
TI - Durchdrungenheit. Texte und Gespräche.
ER -
TY - JOUR
AU - Moritzer, Elmar
AU - Elsner, Christian Lennart
ID - 33859
IS - 1
JF - Macromolecular Symposia
TI - Investigation and Improvement of Processing Parameters of a Copper-Filled Polymer Filament in Fused Filament Fabrication as a Basis for the Fabrication of Low-Porosity Metal Parts
VL - 404
ER -
TY - JOUR
AU - Moritzer, Elmar
AU - Wächter, Julian
ID - 33861
IS - 1
JF - Macromolecular Symposia
TI - Development of a Procedure for the Assessment of Material Potentials under Consideration of the Weld Seam Quality for Multi-Material Applications in the FDM Process
VL - 404
ER -
TY - BOOK
AB - Lightweight materials such as aluminium and ultra-high-strength steel are increasingly being used in modern material mixed design in car body construction. As a fixing method for hybrid joining with structural adhesive, clinching has the advantage over other mechanical joining technologies that different materials can be joined without an auxiliary joining part and pre-hole. Due to the large degree of deformation in the joining partners, strong in-plane and out-of-plane material flows occur during the setting process, which can lead to plastic deformation.
The aim of this work is the further development of shear-clinching for low-deformation of aluminium-steel joints. To gain a basic understanding of the joint deformation, the deformation of the joint partners during the setting process is identified step by step. Based on the knowledge gained, the deformation-related influencing factors are investigated experimentally. Thus, optimisation approaches as well as suggested handling methods for the production of a low-deformation shear-clinching joint are derived. For the realisation of the common narrow flange, which is to be characterised as deformation-sensitive due to a small edge distance, a numerically supported tool modification is carried out and subsequently experimentally validated.
AU - Han, Daxin
ID - 33865
TI - Deformationsarme Fügeverbindungen mittels prozessoptimiertem Schneidclinchen
ER -
TY - GEN
AU - Itner, Dominik
AU - Gravenkamp, Hauke
AU - Dreiling, Dmitrij
AU - Birk, Carolin
AU - Henning, Bernd
ID - 17090
TI - Differentiation of an SBFE model in the context of material parameter determination
ER -
TY - BOOK
ED - Famula, Marta
ED - Witschel, Verena
ID - 33876
TI - Theater und Krise. Paradigmen der Störung in Dramentexten und Bühnenkonzepten nach 2000, (= Drama zwischen Text und Bühne 1)
ER -
TY - GEN
AU - Laux, Florian
AU - Kundisch, Dennis
ID - 33884
TI - Judgment or Choice? An Experimental Comparison of Evaluation Approaches for External Crowdvoting
ER -
TY - JOUR
AB - AbstractGenetic factors are relevant for both eating disorders and body weight regulation. A recent genome-wide association study (GWAS) for anorexia nervosa (AN) detected eight genome-wide significant chromosomal loci. One of these loci, rs10747478, was also genome-wide and significantly associated with body mass index (BMI). The nearest coding gene is the Polypyrimidine Tract Binding Protein 2 gene (PTBP2). To detect mutations in PTBP2, Sanger sequencing of the coding region was performed in 192 female patients with AN (acute or recovered) and 191 children or adolescents with (extreme) obesity. Twenty-five variants were identified. Twenty-three of these were predicted to be pathogenic or functionally relevant in at least one in silico tool. Two novel synonymous variants (p.Ala77Ala and p.Asp195Asp), one intronic SNP (rs188987764), and the intronic deletion (rs561340981) located in the highly conserved region of PTBP2 may have functional consequences. Ten of 20 genes interacting with PTBP2 were studied for their impact on body weight regulation based on either previous functional studies or GWAS hits for body weight or BMI. In a GWAS for BMI (Pulit et al. 2018), the number of genome-wide significant associations at the PTBP2 locus was different between males (60 variants) and females (two variants, one of these also significant in males). More than 65% of these 61 variants showed differences in the effect size pertaining to BMI between sexes (absolute value of Z-score >2, two-sided p < 0.05). One LD block overlapping 5′UTR and all coding regions of PTBP2 comprises 56 significant variants in males. The analysis based on sex-stratified BMI GWAS summary statistics implies that PTBP2 may have a more pronounced effect on body weight regulation in males than in females.
AU - Zheng, Yiran
AU - Rajcsanyi, Luisa Sophie
AU - Herpertz-Dahlmann, Beate
AU - Seitz, Jochen
AU - de Zwaan, Martina
AU - Herzog, Wolfgang
AU - Ehrlich, Stefan
AU - Zipfel, Stephan
AU - Giel, Katrin
AU - Egberts, Karin
AU - Burghardt, Roland
AU - Föcker, Manuel
AU - Al-Lahham, Saad
AU - Peters, Triinu
AU - Libuda, Lars
AU - Antel, Jochen
AU - Hebebrand, Johannes
AU - Hinney, Anke
ID - 32326
IS - 1
JF - Translational Psychiatry
KW - Biological Psychiatry
KW - Cellular and Molecular Neuroscience
KW - Psychiatry and Mental health
SN - 2158-3188
TI - PTBP2 – a gene with relevance for both Anorexia nervosa and body weight regulation
VL - 12
ER -
TY - JOUR
AB - Abstract
Purpose
The COVID-19 pandemic and public measures have a direct impact on the nutrition situation; studies show changes in food consumption, eating behavior or body weight but complex pattern analyses of changes rarely exist.
Methods
During the first German lockdown, a web-based survey was conducted among adults. It included 33 questions about changes in food intake, eating habits and physical activity, as well as anthropometrics and sociodemographic factors. Patterns of change were calculated based on changes in food intake and eating habits using two-step cluster analysis. To identify influencing factors for assignment to the patterns of change, binary logistic regression analyses were performed.
Results
Data from 2103 participants (81% female, 40 ± 14 years) were considered for analysis. Increased stockpiling, cooking, and variation in preparation was reported by 50–70%. The constant pattern (C-P, 36%) reported little change besides the above. The health-oriented pattern (HO-P; 37%) reported eating more healthy foods, avoiding unhealthy foods, and eating less and less frequently. The emotional-driven pattern (ED-P; 28%) exhibits higher influence of emotions on eating behavior, less avoidance of unhealthy foods, and increased consumption of sweets, pastries, and alcohol. The odds of changing eating behavior either to HO-P or ED-P were higher in women, people with migration background, younger participants, and increased with BMI categories.
Conclusion
Both, the ED-P and HO-P, exhibit distinctive reactions in eating habits and food intake when dealing with a distressing experience. In subgroups, these may lead to disturbances in eating behavior and increase the risk for eating disorders and obesity.
AU - Bühlmeier, Judith
AU - Frölich, Stefanie
AU - Ludwig, Christine
AU - Knoll-Pientka, Nadja
AU - Schmidt, Börge
AU - Föcker, Manuel
AU - Libuda, Lars
ID - 32328
JF - European Journal of Nutrition
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
SN - 1436-6207
TI - Changes in patterns of eating habits and food intake during the first German COVID-19 lockdown: results of a cross-sectional online survey
ER -
TY - JOUR
AB - Abstract
Purpose
We aimed to investigate whether parental and siblings’ sugar-sweetened beverage (SSB) intake had prospective impact on children’s SSB consumption, and the potential sex difference in these associations.
Methods
This study included a total of 904 children and their parents enrolled from 2004 to 2011 China Health and Nutrition Survey (CHNS) cohort study. SSB consumption information was estimated using a short dietary questionnaire and total energy intake was assessed with three-day 24-h dietary assessments at recruitment and follow-up surveys. Multivariate logistic or linear regression analyses were used to assess the association for SSB consumption between parents, siblings and children after adjusting for age, body mass index (BMI) z-score, household income and parental educational level.
Results
In this study, a majority (87.6%) of children consumed SSB. Among them, the median consumption of SSB was 70.3 ml/day per capita and 205.4 ml/day per consumer. Parental SSB consumption was relevant to children’s SSB consumption, and this association was more pronounced in boys than in girls. Meanwhile, fathers seemed to have a stronger impact on whether children consume SSB than mothers which was reflected by lower P and higher OR. Additionally, children’s SSB intake was prospectively associated with their older siblings’ SSB consumption (Pfor trend < 0.03).
Conclusions
Parental and older siblings’ SSB consumption was relevant to children’s SSB intake. Particularly, boys were more susceptible to parental impact than girls, and fathers seemed to have a greater influence on children than mothers.
AU - Liu, Xue-Ting
AU - Xiong, Jing-Yuan
AU - Xu, Yu-Jie
AU - Zhao, Li
AU - Libuda, Lars
AU - Cheng, Guo
ID - 33235
JF - European Journal of Nutrition
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
SN - 1436-6207
TI - Prospective association of family members’ sugar-sweetened beverages intake with children’s sugar-sweetened beverages consumption in China
ER -
TY - JOUR
AU - Adan, Roger A.H.
AU - Cirulli, Francesca
AU - Dye, Louise
AU - Higgs, Suzanne
AU - Aarts, Kristien
AU - van der Beek, Eline M.
AU - Buitelaar, Jan K.
AU - Destrebecq, Frédéric
AU - De Witte, Elke
AU - Hartmann, Tobias
AU - Korosi, Aniko
AU - Libuda, Lars
AU - Dickson, Suzanne L.
ID - 33234
JF - Brain, Behavior, and Immunity
KW - Behavioral Neuroscience
KW - Endocrine and Autonomic Systems
KW - Immunology
SN - 0889-1591
TI - Towards new nutritional policies for brain health: A research perspective on future actions
VL - 105
ER -
TY - JOUR
AB - Abstract
Background
In Sub-Saharan African countries, rapid urbanization and increasing socio-economic status are associated with a transition to decreased physical activity (PA). A more sedentary lifestyle is linked to increased body fat leading to increments in leptin levels. Since rodent and human studies in high-income countries have shown that starvation-induced hypoleptinemia triggers high PA, efforts are warranted to pursue the hypothesis that low leptin levels in lean children of low- and middle-income countries (LMIC) are also associated with high PA.
Methods
In this cross-sectional study, we assessed seven-day PA with triaxial accelerometry (ActiGraph GT3X) among 223 primary school children (9 to 12 years of age) in rural Tanzania. Moderate-to-vigorous PA (MVPA) and total accelerometer counts per day were outcome variables. Leptin was determined using enzyme linked immunosorbent assay tests from dried blood spots. Anthropometric assessments were conducted and food insecurity and socio-demographic data were gathered using semi-structured interviews.
Results
In this sample of school children in rural Tanzania, leptin concentrations (median: 0.91 ng/mL, P25: 0.55, P75: 1.69), body mass index z-scores (median: -1.35, P25: -1.93, P75: -0.82), and height-for-age-z-scores (median: -1.16, P25: -1.96, P75: -0.61) were low. In contrast, PA levels were high with a median MVPA time of 119 min/day. Linear regression confirmed that leptin levels were negatively associated with MVPA (beta: -18.1; 95%CI: -29.7; -6.5; p = 0.002) and total accelerometer counts (beta: -90,256; 95%CI: -154,146; -26,365; p = 0.006). Children residing in areas with better infrastructure had lower MVPA levels (p < 0.001) and tended to have higher leptin levels (p = 0.062) than children residing in areas only reachable via dirt roads.
Conclusion
Our cross-sectional field study is the first that supports the hypothesis of low leptin levels as a potential endocrine trigger of high PA in lean children of a LMIC. We observed early signs of a PA transition towards a less active lifestyle in a subgroup residing in areas with better infrastructure that concomitantly tended to have higher leptin concentrations. Considering that area-dependent PA differences were more pronounced among girls than boys, whereas differences in leptin levels were less pronounced, not only biological, but also external factors explain PA transition.
AU - Ludwig, Christine
AU - Knoll-Pientka, Nadja
AU - Mwanri, Akwilina
AU - Erfle, Celina
AU - Onywera, Vincent
AU - Tremblay, Mark S.
AU - Bühlmeier, Judith
AU - Luzak, Agnes
AU - Ferland, Maike
AU - Schulz, Holger
AU - Libuda, Lars
AU - Hebebrand, Johannes
ID - 33385
IS - 1
JF - BMC Public Health
KW - Public Health
KW - Environmental and Occupational Health
SN - 1471-2458
TI - Low leptin levels are associated with elevated physical activity among lean school children in rural Tanzania
VL - 22
ER -
TY - JOUR
AB - Abstract
Background/objectives
The transition to adolescence is characterised by considerable behavioural changes, including diet. This study describes the level of obesogenic eating behaviours in 10- and 15-year-olds, and their association with dietary intake.
Subjects/methods
Participants of the 10- and 15-year follow-ups of the German GINIplus and LISA birth cohort studies were included (N10 = 2257; N15 = 1880). Eating behaviours and dietary intake were assessed via self-report questionnaires. Sex-stratified, cross-sectional associations of “external eating”, “emotional eating” and “dietary restraint” (the latter at age 15 years only) with dietary intake (17 food groups—categorised into tertiles, macronutrients, and total energy) were assessed using multinomial logistic or multiple linear regression as required, adjusting for covariates and correcting for multiple testing.
Results
Reported levels of eating behaviours were low in both age-groups. External eating was higher in 10-year-old males than females, while all eating behaviours were most pronounced in 15-year-old females. At 10 years, emotional eating was associated with medium vegetable intake in females (Relative Risk Ratio (RRR) = 1.84, p = 0.0017). At 15 years, external eating was associated with total energy (kJ) in females (β = 718, p = 0.0002) and high butter intake in males (RRR = 1.96, p = 0.0019). Dietary restraint in females was inversely associated with total energy (β = −967, p < 0.0001) and omega-3 fatty acids (Means Ratio (MR) = 0.94, p = 0.0017), and positively associated with high fruit (RRR = 2.20, p = 0.0003) and whole grains (RRR = 1.94, p = 0.0013).
Conclusion
Obesogenic eating behaviour scores are low among children and adolescents of a predominantly high socioeconomic status population and present only few associations with specific aspects of diet, mainly among adolescent females.
AU - Marb, Anne
AU - Libuda, Lars
AU - Standl, Marie
AU - Koletzko, Sibylle
AU - Bauer, Carl-Peter
AU - Schikowski, Tamara
AU - Berdel, Dietrich
AU - von Berg, Andrea
AU - Herberth, Gunda
AU - Bühlmeier, Judith
AU - Harris, Carla P.
ID - 33386
JF - European Journal of Clinical Nutrition
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
SN - 0954-3007
TI - Obesogenic eating behaviour and dietary intake in German children and adolescents: results from the GINIplus and LISA birth cohort studies
ER -
TY - CONF
AU - Kostitsyna, Irina
AU - Scheideler, Christian
AU - Warner, Daniel
ED - Aspnes, James
ED - Michail, Othon
ID - 30987
SN - 1868-8969
T2 - 1st Symposium on Algorithmic Foundations of Dynamic Networks (SAND 2022)
TI - Brief Announcement: Fault-Tolerant Shape Formation in the Amoebot Model
VL - 221
ER -
TY - CHAP
AU - Famula, Marta
ED - Famula, Marta
ED - Witschel, Verena
ID - 33900
T2 - Theater und Krise. Paradigmen der Störung in Dramentexten und Bühnenkonzepten nach 2000. (= Drama zwischen Text und Bühne 1)
TI - Die Widerständigkeit der Wirklichkeit. Krise in Wolfram Lotzʼ Drama Der große Marsch
ER -
TY - CHAP
AU - Famula, Marta
AU - Witschel, Verena
ED - Famula, Marta
ED - Witschel, Verena
ID - 33901
T2 - Theater und Krise. Paradigmen der Störung in Dramentexten und Bühnenkonzepten nach 2000. (= Drama zwischen Text und Bühne 1)
TI - Einleitung
ER -
TY - CONF
AB - Workshops on business model generation lead to collaborative work phases and discussions on business models. Therefore, tools such as the Business Model Canvas are used, typically filled with sticky notes. Generated content needs to be digitized in a time-consuming manual follow-up as part of the documentation and basis for a further use of the results in the company. In addition, there are challenges, such as decentralized work and digital workshop formats. Augmented Reality offers a way to reduce the digitization effort and enables decentralized work. In this research, the potentials of the use of AR technology in workshops on business model generation is investigated. Therefore, functions are implemented and evaluated in a demonstrator that reduces digitization effort and enable distributed work.
AU - Gräßler, Iris
AU - Grewe, Benedikt
AU - Kramer, Hendrik
ID - 33914
KW - business model generation
KW - augmented reality
KW - workshop
KW - collaborative work
KW - digitization
KW - AR-supported workshop concept
KW - immersive technologies
KW - decentralized work
KW - business model canvas
T2 - LUT Scientific and Expertise Publications
TI - Supporting Business Model Generation with Augmented Reality
ER -
TY - GEN
AU - Friesen, Olga
AU - Claes, Leander
AU - Feldmann, Nadine
AU - Henning, Bernd
ID - 6558
TI - Estimation of piezoelectric material parameters of ring-shaped specimens
ER -
TY - BOOK
ED - Famula, Marta
ED - Özelt, Clemens
ED - Schneider, Martin
ID - 33943
TI - Die Kunst der Theatereröffnung. Ästhetik und Kulturpoetik von Vorreden und Vorspielen vom 17. Jahrhundert bis heute [in Vorbereitung] (Marta Famula ist Herausgeberin der Schriftenreihe "Drama zwischen Text und Bühne" zus. mit Agata Mirecka und Paul Martin Langner)
VL - 2
ER -
TY - CHAP
AU - Rumlich, Dominik
ED - Piske, Thorsten
ED - Steinlen, Anja
ID - 33948
T2 - Cognition and second language acquisition
TI - Exploring the importance of prior knowledge and verbal cognitive abilities for foreign language learning
ER -
TY - JOUR
AU - Meer, Philipp
AU - Hartmann, Johanna
AU - Rumlich, Dominik
ID - 25831
IS - 3
JF - Applied Linguistics
TI - Attitudes of German high school students toward different varieties of English
VL - 43
ER -
TY - BOOK
ED - Famula, Marta
ED - Witschel, Verena
ID - 33944
TI - Theater und Krise. Paradigmen der Störung in Dramentexten und Bühnenkonzepten nach 2000 (Marta Famula ist Herausgeberin der Schriftenreihe "Drama zwischen Text und Bühne" zus. mit Agata Mirecka und Paul Martin Langner)
VL - 1
ER -
TY - JOUR
AU - Rumlich, Dominik
ID - 33949
IS - 2
JF - Fremdsprachen Lehren und Lernen
TI - Weniger Kompetenz, mehr Resonanz. Contra Position
VL - 51
ER -
TY - JOUR
AB - Abstract
Smart Services eröffnen vielfältige Geschäftsmöglichkeiten für produzierende Unternehmen und erfordern zugleich einschneidende Anpassungen ihrer häufig historisch gewachsenen Wertschöpfung. Dieser Beitrag zeigt eine Web-Applikation, die es produzierenden Unternehmen erlaubt, die erforderliche Smart-Service-Transformation zu planen. Dafür werden umfassendes Lösungswissen bereitgestellt und eine individuelle Gestaltungsempfehlungen für die zukünftige Wertschöpfung als Smart-Service-Anbieter gegeben.
AU - Reinhold, Jannik
AU - Siewert, Michael
AU - Scholtysik, Michel
AU - Rasor, Anja
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ID - 33956
IS - 5
JF - Zeitschrift für wirtschaftlichen Fabrikbetrieb
KW - Management Science and Operations Research
KW - Strategy and Management
KW - General Engineering
SN - 2511-0896
TI - Software-gestützte Planung der Smart-Service-Transformation
VL - 117
ER -
TY - JOUR
AB - AbstractComprehensive data understanding is a key success driver for data analytics projects. Knowing the characteristics of the data helps a lot in selecting the appropriate data analysis techniques. Especially in data-driven product planning, knowledge about the data is a necessary prerequisite because data of the use phase is very heterogeneous. However, companies often do not have the necessary know-how or time to build up solid data understanding in connection with data analysis. In this paper, we develop a methodology to organize and categorize and thus understand use phase data in a way that makes it accessible to general data analytics workflows, following a design science research approach. We first present a knowledge base that lists typical use phase data from a product planning view. Second, we develop a taxonomy based on standard literature and real data objects, which covers the diversity of the data considered. The taxonomy provides 8 dimensions that support classification of use phase data and allows to capture data characteristics from a data analytics view. Finally, we combine both views by clustering the objects of the knowledge base according to the taxonomy. Each of the resulting clusters covers a typical combination of analytics relevant characteristics occurring in practice. By abstracting from the diversity of use phase data into artifacts with manageable complexity, our approach provides guidance to choose appropriate data analysis and AI techniques.
AU - Panzner, Melina
AU - von Enzberg, Sebastian
AU - Meyer, Maurice
AU - Dumitrescu, Roman
ID - 33953
JF - Journal of the Knowledge Economy
KW - Economics and Econometrics
SN - 1868-7865
TI - Characterization of Usage Data with the Help of Data Classifications
ER -
TY - CONF
AU - Panzner, Melina
AU - Meyer, Maurice
AU - Enzberg, Sebastian von
AU - Dumitrescu, Roman
ID - 33706
KW - General Medicine
SN - 2212-8271
T2 - Procedia CIRP
TI - Business-to-Analytics Canvas - Translation of Product Planning-Related Business Use Cases into Concrete Data Analytics Tasks
VL - 109
ER -
TY - CONF
AU - Boeddeker, Christoph
AU - Cord-Landwehr, Tobias
AU - von Neumann, Thilo
AU - Haeb-Umbach, Reinhold
ID - 33954
T2 - Interspeech 2022
TI - An Initialization Scheme for Meeting Separation with Spatial Mixture Models
ER -
TY - JOUR
AU - Reinhold, Jannik
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ID - 33955
JF - Procedia CIRP
KW - General Medicine
SN - 2212-8271
TI - Value Creation Framework and Roles for Smart Services
VL - 109
ER -
TY - GEN
AB - Recent studies have revealed that 87 % to 96 % of the Android apps using cryptographic APIs have a misuse which may cause security vulnerabilities. As previous studies did not conduct a qualitative examination of the validity and severity of the findings, our objective was to understand the findings in more depth. We analyzed a set of 936 open-source Java applications for cryptographic misuses. Our study reveals that 88.10 % of the analyzed applications fail to use cryptographic APIs securely. Through our manual analysis of a random sample, we gained new insights into effective false positives. For example, every fourth misuse of the frequently misused JCA class MessageDigest is an effective false positive due to its occurrence in a non-security context. As we wanted to gain deeper insights into the security implications of these misuses, we created an extensive vulnerability model for cryptographic API misuses. Our model includes previously undiscussed attacks in the context of cryptographic APIs such as DoS attacks. This model reveals that nearly half of the misuses are of high severity, e.g., hard-coded credentials and potential Man-in-the-Middle attacks.
AU - Wickert, Anna-Katharina
AU - Baumgärtner, Lars
AU - Schlichtig, Michael
AU - Mezini, Mira
ID - 33959
TI - To Fix or Not to Fix: A Critical Study of Crypto-misuses in the Wild
ER -
TY - JOUR
AU - Scharlau, Ingrid
AU - Schreiber, Christine
ID - 33960
IS - 55
JF - Psychologieunterricht
TI - Facharbeiten schreiben - Informationen für Schülerinnen und Schüler
ER -
TY - CONF
AU - Aguiliera, Marcos
AU - Richa, Andréa W.
AU - Schwarzmann, Alexander A.
AU - Panconesi, Alessandro
AU - Scheideler, Christian
AU - Woelfel, Philipp
ED - Milani, Alessia
ED - Woelfel, Philipp
ID - 33967
T2 - PODC ’22: ACM Symposium on Principles of Distributed Computing, Salerno, Italy, July 25 - 29, 2022
TI - 2022 Edsger W. Dijkstra Prize in Distributed Computing
ER -
TY - GEN
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Inguva, Venkatesh
AU - Kenig, Eugeny Y.
ID - 33972
T2 - 1st Conference on Energy, Environment and Digital Transition E2DT
TI - A Thermal Model for Recuperative Heat Engines Operating with Dense Working Fluids
ER -
TY - GEN
ED - Scheideler, Christian
ID - 33968
SN - 978-3-95977-255-6
TI - 36th International Symposium on Distributed Computing, DISC 2022, October 25-27, 2022, Augusta, Georgia, USA
VL - 246
ER -
TY - JOUR
AU - Moritzer, Elmar
AU - Driediger, Christine
ID - 33988
IS - 1
JF - Macromolecular Symposia
KW - digital light processing
KW - material combination
KW - reactive direct bonding
KW - vat photopolymerization
SN - 1022-1360
TI - Reactive Direct Bonding of Digital Light Process Components
VL - 404
ER -
TY - GEN
AU - Moritzer, Elmar
AU - Elsner, Christian Lennart
ID - 33987
SN - 0023–5563
T2 - Kunststoffe
TI - Mit Gestaltungsrichtlinien zum Erfolg
VL - 11/2022
ER -
TY - CONF
AB - Digital platforms have already led to disruptions in multiple B2C markets and are becoming increasingly dominant in B2B markets. As a result, more and more companies are trying to participate in the platform economy. However, the successful development and operation of a digital platform is associated with significant challenges, which leads to 85% of all platforms failing. A core challenge is the dynamic nature of the platform economy, with varying strategic objectives at different stages in the platform lifecycle. Platform operators must continuously monitor platform progress and adjust their strategy.
Utilizing action research in the real-world platform project AI Marketplace, we developed a lifecycle-oriented performance management approach for digital platforms in B2B markets. It enables platform operators to reflect on their position in the platform lifecycle, derive relevant strategic objectives, and monitor them with suitable key performance indicators. Hence, allowing them to secure the long-term success of their platform business.
AU - Özcan, Leon
AU - Kirchberg, Lisa
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ED - Bitran, Iain
ED - Bitetti, Leandro
ED - Conn, Steffen
ED - Fishburn, Jessica
ED - Huizingh, Eelko
ED - Torkkeli, Marko
ED - Yang, Jialei
ID - 33997
KW - Digital Platform
KW - Two-Sided Market
KW - Multi-Sided Market
KW - Platform Lifecycle
KW - Platform Monitoring
KW - Performance Management
T2 - The Role of Innovation: Past, Present, Future
TI - Performance Management Approach for Digital Platforms in B2B Markets
ER -
TY - CONF
AB - In the course of digitalization, digital platforms are unleashing their full disruptive potential and are already dominating the first industries (e.g., hotel industry). As a result of this success, more and more companies want to build their own platforms and participate in the success. However, building and operating a digital platform involves multiple challenges and most of such ambitions fail. Since most digital platforms fail, strategic leadership of digital platforms must consider both success factors and reasons for platform failure. For this purpose, we conducted a systematic literature analysis and identified 24 success as well as failure factors in 9 dimensions. From a scientific perspective, the article provides a structured analysis of success and failure factors of digital platforms, which previously did not exist in literature. Practitioners can use the resulting knowledge base to successfully manage platform activities and avoid pitfalls.
AU - Özcan, Leon
AU - Koldewey, Christian
AU - Duparc, Estelle
AU - van der Valk, Hendrik
AU - Otto, Boris
AU - Dumitrescu, Roman
ID - 33991
KW - Digital Platform
KW - Multi-sided Market
KW - Two-sided Market
KW - Success Factor
KW - Failure Factor
TI - Why do Digital Platforms succeed or fail? - A Literature Review on Success and Failure Factors
ER -
TY - CONF
AU - Lienen, Christian
AU - Platzner, Marco
ID - 34007
TI - Task Mapping for Hardware-Accelerated Robotics Applications using ReconROS
ER -
TY - CHAP
AU - Scharlau, Ingrid
ED - Haacke-Werron, Stefanie
ED - Karsten, Andrea
ED - Scharlau, Ingrid
ID - 34015
T2 - Reflexive Schreibwissenschaft
TI - Hundertstelmillimeter
VL - 14
ER -
TY - BOOK
ED - Haacke-Werron, Stefanie
ED - Karsten, Andrea
ED - Scharlau, Ingrid
ID - 34013
TI - Reflexive Schreibwissenschaft
VL - 14
ER -
TY - JOUR
AB - Lightweight construction has increasingly become the focus of scientific research in recent years, not least due to
the constantly increasing fuel price, which is a key factor in the economic viability of many companies. In this
respect, the use of hybrid structures, made of dissimilar materials offers many advantages. However, such hybrid
structures often have undesirable side effects. For example, brittle intermetallic phases are formed when
aluminum and steel are welded. Clinching as a mechanical joining process does not produce such intermetallic
phases since the connection is realized through form and force closure. In this process, a punch passes through
two or more sheets and forms them into a permanent joint in a die. In the present work, the corrosion phenomena
of an aluminum-steel clinched joint have been investigated by both experiments and numerical simulations in
order to explain the superior fatigue behavior of pre-corroded joints. Therefore, the clinched joints have been
corroded by a three-week salt-spray test. In addition, the electric potential and the von Mises stress are calculated
under the assumption of a static loading. The results of both experiments and numerical simulations can explain
the improvement in the fatigue behavior of the corroded specimens. This phenomenon can be attributed to the
accumulation of corrosion products in small gaps between the joined metal sheets.
AU - Harzheim, Sven
AU - Ewenz, Lars
AU - Zimmermann, Martina
AU - Wallmersperger, Thomas
ID - 34253
JF - Journal of Advanced Joining Processes
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Engineering (miscellaneous)
KW - Chemical Engineering (miscellaneous)
SN - 2666-3309
TI - Corrosion Phenomena and Fatigue Behavior of Clinched Joints: Numerical and Experimental Investigations
VL - 6
ER -
TY - JOUR
AB - Clinching is the manufacturing process of joining two or more metal sheets under high plastic deformation by form and force closure without thermal support and auxiliary parts. Clinch connections are applicable to difficult-to-join hybrid material combinations, such as steel and aluminum. Therefore, this technology is interesting for the application of AISI 304 components, as this material is widely used as a highly formable sheet material. A characteristic feature of AISI 304 is its metastability, i.e., the face-centered cubic (fcc) γ-austenite can transform into a significantly stronger body-centered cubic (bcc) α’-martensite under plastic deformation. This work investigates the effect of heat treatment—a process that involves the formation of an oxidation layer on the sheet surface—on the forming process during joining and the resulting mechanical properties of clinch joints made from AISI 304. For this purpose, different joints made from non-heat treated and heat-treated sheets were examined using classical metallography and advanced SEM techniques, accompanied by further investigations, such as hardness and feritscope measurements. The shear tensile strength was determined, and the fracture behavior of the samples was investigated. Clear influences of heat-treatment-induced surface roughness on the joint geometry and strength were observed.
AU - Zeuner, André Till
AU - Ewenz, Lars
AU - Kalich, Jan
AU - Schöne, Sebastian
AU - Füssel, Uwe
AU - Zimmermann, Martina
ID - 34252
IS - 9
JF - Metals
KW - General Materials Science
KW - Metals and Alloys
SN - 2075-4701
TI - The Influence of Heat Treatment on the Microstructure, Surface Roughness and Shear Tensile Strength of AISI 304 Clinch Joints
VL - 12
ER -