@misc{HarendarskiBrieseHallmannetal.2024, author = {Harendarski, Ulf and Briese, Joschka and Hallmann, Tiziana and Dettmann, Luc and Kitzerow, Tom}, title = {Kraft und Signifikanz}, volume = {2024}, number = {13}, editor = {Harendarski, Ulf and Briese, Joschka}, doi = {10.15475/skms.2024.1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-20388}, pages = {162 Seiten}, year = {2024}, abstract = {Zuerst erschienen auf: https://www.kultursemiotik.com/forschung/publikationen/schriftenreihe-online/ Inhalt Vorwort Kraft und Signifikanz. Kultursemiotische Betrachtungen allt{\"a}glicher Darstellungen in der sprachbasierten Semiose Ulf Harendarski und Joschka Briese Signifikanz der Melancholie Zur diskursiven Konstitution Leonard Cohens Tiziana Hallmann Von gefallenen Helden Mythologische Umschriften und ihre semiotisierende Kraft Luc Dettmann Sprachliche Konstitutionen von Drittpersonalit{\"a}t Eine semantisch/pragmatische Analyse von distanzmarkierenden Verben in drittpersonalen Aussagen {\"o}ffentlicher Texte Tom Kitzerow Spuren diskursiver Interpretationsprozesse F{\"u}r ein elaboriertes Konzept von Signifikanz Joschka Briese Impressum}, language = {de} } @article{ChenMuellerYokoyama2024, author = {Chen, Yijia and M{\"u}ller, Moritz and Yokoyama, Keita}, title = {A parameterized halting problem, Δ0 truth and the MRDP theorem}, series = {The Journal of Symbolic Logic (ISSN 1943-5886)}, volume = {90 (2025)}, journal = {The Journal of Symbolic Logic (ISSN 1943-5886)}, number = {2}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {1943-5886}, doi = {10.1017/jsl.2024.44}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19308}, pages = {483 -- 508}, year = {2024}, abstract = {We study the parameterized complexity of the problem to decide whether a given natural number n satisfies a given Δ0-formula ϕ(x); the parameter is the size of ϕ. This parameterization focusses attention on instances where n is large compared to the size of ϕ.We show unconditionally that this problem does not belong to the parameterized analogue of AC0. From this we derive that certain natural upper bounds on the complexity of our parameterized problem imply certain separations of classical complexity classes. This connection is obtained via an analysis of a parameterized halting problem. Some of these upper bounds follow assuming that IΔ0 proves the MRDP theorem in a certain weak sense.}, language = {en} } @phdthesis{Pirwitz2024, author = {Pirwitz, Anne}, title = {Migrationsfilme als ‚kritische Heimatfilme'?}, publisher = {Akademische Verlagsgemeinschaft M{\"u}nchen}, address = {M{\"u}nchen}, doi = {10.23780/9783960916338}, url = {http://nbn-resolving.de/urn:nbn:de:101:1-2409191636377.506847991255}, school = {Universit{\"a}t Passau}, pages = {330 Seiten}, year = {2024}, abstract = {Seit dem Zusammenbruch des Kommunismus ist die Anzahl im Ausland arbeitender Rum{\"a}n*innen stark angestiegen. Inzwischen leben fast 20 \% der Bev{\"o}lkerung jenseits der Landesgrenzen. Transnationale Familien­strukturen mit in Rum{\"a}nien zur{\"u}ckgelassenen Kindern oder Eltern und pluri-lokale Lebensweisen der Migrant*innen sind in k{\"u}rzester Zeit zu einem allt{\"a}glichen Ph{\"a}nomen der rum{\"a}nischen Gesellschaft geworden. Die Auswirkungen dieser Migration sind von gesamtgesellschaftlicher Relevanz und finden daher immer wieder Eingang in Literatur, Musik und Film. Diese Medien werden dabei von realen Ereignissen inspiriert, greifen aktuelle Diskurse auf und konstruieren eigene fiktionale Wirklichkeiten. Dabei vermitteln sie bestimmte Weltbilder und bieten verschiedene Sichtweisen auf die von ihnen verhandelten Themen an. Zwischen dem Ende der kommunistischen Diktatur 1989 und 2022 entstanden 52 rum{\"a}nische fiktionale Kurz- und Spielfilme, die explizit Migration ins Zentrum ihrer erz{\"a}hlten Geschichten stellen. Der vorliegende Band untersucht, auf welche Weise die rum{\"a}nische Arbeitsmigration im postkommunistischen Film verarbeitet wird, welches Bild der rum{\"a}nischen Heimat und des ‚Westens' vermittelt wird, wie diese R{\"a}ume durch filmische Mittel {\"a}sthetisch konstruiert werden und ob es sich bei diesen Werken um eine neue Form des ‚kritischen Heimatfilms' handelt.}, subject = {Rum{\"a}nien}, language = {de} } @misc{OPUS4-1516, title = {Zeitgem{\"a}sse Methoden der Kinder- und Jugendmedienforschung}, volume = {2024}, number = {60}, editor = {Lampert, Claudia and K{\"u}hn, Jessica and Wiedel, Fabian and Fehr, Ada and Domdey, Paulina and Thiel, Kira}, publisher = {OAPublishing Collective Genossenschaft}, address = {Z{\"u}rich}, doi = {10.21240/mpaed/60.X}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-15162}, pages = {179 Seiten}, year = {2024}, abstract = {MedienP{\"a}dagogik : Zeitschrift f{\"u}r Theorie und Praxis in der Medienbildung Themenheft 60: Zeitgem{\"a}sse Methoden der Kinder- und Jugendmedienforschung Inhalte: Malin Fecke, Ada Fehr, Daniela Schl{\"u}tz Die Mobile Experience Sampling Methode (MESM) in der Kinder- und Jugendmedienforschung Andr{\´e} Weßel ‹Jeden Abend Instagram, TikTok, YouTube› - Das digitale Medientagebuch als qualitative Forschungsmethode zur Untersuchung des Medienhandelns junger Menschen Thorsten Naab, Ruth Wendt, Alexandra Langmeyer-Tornier Messung m{\"u}tterlicher Medienerziehung f{\"u}r interaktive und nicht-interaktive Medien Thorsten Naab, Moritz Abraham Wie ein Spielzeug zum Helfer in Kinderbefragungen werden kann Sophie Mayen, Anne Reinhardt , Claudia Wilhelm Instrumente zur Messung von jugendlicher Mediennutzung Paulina Domdey, Katrin Potzel Medientageb{\"u}cher als Teil sequenzieller Triangulation in der qualitativen Forschung Franziska Koschei, Lena Schmidt, Susanne Eggert, Andreas Dertinger, Michaela Kramer, Rudolf Kammerl Forschung mit Grundsch{\"u}ler:innen Jan Pfetsch, Felix Paschel, Cora Bieß, Ingrid Stapf Forschungsethik und Kinderrechte}, language = {de} } @article{Huebenthal2024, author = {Huebenthal, Sandra}, title = {Ged{\"a}chtnis trifft Einleitung : ein neuer Blick auf alte Fragen}, series = {New Testament Studies}, volume = {70 (2024)}, journal = {New Testament Studies}, number = {2}, publisher = {Cambridge University Press}, address = {Cambridge}, doi = {10.1017/S002868852300036X}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19277}, pages = {131 -- 148}, year = {2024}, abstract = {Ausgehend von der kulturwissenschaftlichen Forschung zu Familienalben und deren Gemeinsamkeiten mit dem Neuen Testament l{\"a}dt dieser Beitrag dazu ein, dar{\"u}ber nachzudenken, was sich ver{\"a}ndert, wenn wir die Fragen der Einf{\"u}hrung in das Neue Testament durch die Brille der Theorie des sozialen Ged{\"a}chtnisses betrachten. Aufbauend auf Forschungsergebnissen der Oral History und kulturwissenschaftlichen Ged{\"a}chtnistheorie wird argumentiert, dass die allgemeine Einleitung in den Bereich des kulturellen Ged{\"a}chtnisses und die spezielle Einleitung in den Bereich des sozialen/kollektiven Ged{\"a}chtnisses f{\"a}llt. Beide sind durch den Floating Gap getrennt, was die vielfach wahrgenommenen Ver{\"a}nderungen in der ersten H{\"a}lfte des zweiten Jahrhunderts erkl{\"a}rt. Im n{\"a}chsten Schritt wird ein Modell, das auf dem Dreigenerationenged{\"a}chtnis, der Generational Gap (nach einer Generation), der Floating Gap (nach 3-4 Generationen) und den ersten Generationen von Jesus-Anh{\"a}ngern aufbaut, mit Vorschl{\"a}gen zur Datierung neutestamentlicher B{\"u}cher aus der Einleitungswissenschaft ins Gespr{\"a}ch gebracht. Es zeigt sich, dass die vor und nach dem Generational Gap verwendeten Genres je unterschiedliche Eigenschaften haben, die den Erwartungen an Medien des sozialen und kollektiven Ged{\"a}chtnisses entsprechen. Der Beitrag schließt mit allgemeinen Fragen zu Medien und Medienwandel im Neuen Testament, d.h. M{\"u}ndlichkeit und Schriftlichkeit, identische Texte und Textkritik, dem Kanon als prim{\"a}rem Kontext, der Ausweitung des Geltungsbereichs sowie fluiden Gattungen, und kommt zu dem Schluss, dass kulturwissenschaftliche Ged{\"a}chtnistheorie in der Tat neue Perspektiven f{\"u}r die Einleitungswissenschaft bietet.}, language = {de} } @article{ŁatuszyńskiRudolf2024, author = {Łatuszyński, Krzysztof and Rudolf, Daniel}, title = {Convergence of hybrid slice sampling via spectral gap}, series = {Advances in Applied Probability}, volume = {56 (2024)}, journal = {Advances in Applied Probability}, number = {4}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {1475-6064}, doi = {10.1017/apr.2024.16}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19264}, pages = {1440 -- 1466}, year = {2024}, abstract = {It is known that the simple slice sampler has robust convergence properties; however, the class of problems where it can be implemented is limited. In contrast, we consider hybrid slice samplers which are easily implementable and where another Markov chain approximately samples the uniform distribution on each slice. Under appropriate assumptions on the Markov chain on the slice, we give a lower bound and an upper bound of the spectral gap of the hybrid slice sampler in terms of the spectral gap of the simple slice sampler. An immediate consequence of this is that the spectral gap and geometric ergodicity of the hybrid slice sampler can be concluded from the spectral gap and geometric ergodicity of the simple version, which is very well understood. These results indicate that robustness properties of the simple slice sampler are inherited by (appropriately designed) easily implementable hybrid versions. We apply the developed theory and analyze a number of specific algorithms, such as the stepping-out shrinkage slice sampling, hit-and-run slice sampling on a class of multivariate targets, and an easily implementable combination of both procedures on multidimensional bimodal densities.}, language = {en} } @article{BouriSokhanvarKinatederetal.2024, author = {Bouri, Elie and Sokhanvar, Amin and Kinateder, Harald and {\c{C}}ift{\c{c}}ioğlu, Serhan}, title = {Tech titans and crypto giants : mutual returns predictability and trading strategy implications}, series = {Journal of International Financial Markets, Institutions and Money}, volume = {2025}, journal = {Journal of International Financial Markets, Institutions and Money}, number = {99}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-0612}, doi = {10.1016/j.intfin.2024.102109}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19259}, pages = {30 Seiten}, year = {2024}, abstract = {This study examines the directional return predictability between the technology sector of U.S. stock market and three major cryptocurrencies (Bitcoin, Ethereum, and Dogecoin). Using daily data from August 7, 2015, to February 8, 2024, and the cross-quantilogram approach in both static and dynamic settings, the results reveal significant positive predictability in the stock market-cryptocurrency nexus. The technology sector, semiconductors subsector, and Nvidia Corporation exert predictive power over cryptocurrency returns and vice versa across several quantiles and lags. When controlling for the impact of other financial variables, namely, U.S. dollar and U.S. treasury markets, the return predictability holds, especially for the two largest cryptocurrencies, Bitcoin and Ethereum, which reflects their importance and tighter connections with the U.S. technology sector. A trading strategy based on the results of the cross-quantilograms outperforms a benchmark strategy (i.e., always long position in either stocks or cryptocurrency), which underlines the practical implications of our main findings, particularly in terms of the significant return interactions between U.S. technology/semiconductors stocks and large cryptocurrencies.}, language = {en} } @article{DrescherJanzen2024, author = {Drescher, Katharina and Janzen, Benedikt}, title = {When weather wounds workers : the impact of temperature on workplace accidents}, series = {Journal of Public Economics}, volume = {2025}, journal = {Journal of Public Economics}, number = {241}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.jpubeco.2024.105258}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19241}, pages = {17 Seiten}, year = {2024}, abstract = {We study the effects of temperature on occupational health using administrative data on Swiss occupational accidents from 1996 to 2019. Our results imply that on hot days (T𝑚𝑎𝑥 ≥ 30 ◦C) the number of occupational accidents increases by 7.4\% and on ice days (T𝑚𝑎𝑥 < 0 ◦C) by 6.3\%, relative to mild days. We find that extreme temperatures cause an average of 2600 workplace accidents each year, costing CHF 91 million annually. We provide suggestive evidence for insufficient sleep on hot days as a mechanism. While extreme temperatures worsen occupational health, we observe limited labor supply adaption for most workers.}, language = {en} } @article{LechldeMeerFuermann2024, author = {Lechl, Michael and de Meer, Hermann and F{\"u}rmann, Tim}, title = {A stochastic flexibility calculus for uncertainty-aware energy flexibility management}, series = {Applied Energy}, volume = {2025}, journal = {Applied Energy}, number = {379}, doi = {10.1016/j.apenergy.2024.124907}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19233}, pages = {16 Seiten}, year = {2024}, abstract = {The increasing share of volatile renewables in power systems requires more reserves to balance forecast errors in renewable generation and power fluctuations. In contrast, common reserves such as gas-fired power plants are phased out, impeding the procurement of sufficient reserves. Alternative reserves, particularly on the demand side, such as battery storage systems, also exhibit some degree of freedom to deviate from their scheduled operating point to supply or consume more or less power, thus providing a flexibility potential. However, demand-side flexibility potentials are generally subject to uncertainties, and so is the generation of volatile renewables. The challenge is incorporating the uncertainties on both sides to procure sufficient (uncertain) flexibility potential in advance. Considering uncertainty is important to avoid additional, drastic measures in real-time to balance generation and demand, such as curtailing renewable generation or load shedding. This work presents a stochastic flexibility calculus that provides an indicator for computing the risk of insufficient flexibility potentials or, conversely, guarantees for sufficient flexibility potentials. Thus, the stochastic flexibility calculus contributes to overcoming the challenge of procuring sufficient flexibility potentials in renewable-based systems. An evaluation based on real data is performed using an example of a renewable energy community consisting of households equipped with photovoltaic power plants and battery storage systems. The newly introduced stochastic flexibility calculus computes the number of households that must operate their battery storage systems flexibly to balance forecast errors locally. The results show that the forecast method significantly influences this number. Some numerical results appear unexpected, as too many flexibility-friendly households can negatively impact the aggregated household flexibility potential.}, language = {en} } @article{FinkForsterHeinleinHeinrich2024, author = {Fink, Thomas and Forster-Heinlein, Brigitte and Heinrich, Florian}, title = {Rebricking frames and bases}, series = {Journal of Mathematical Analysis and Applications}, volume = {2025}, journal = {Journal of Mathematical Analysis and Applications}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1096-0813}, doi = {10.1016/j.jmaa.2024.129051}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19227}, pages = {35 Seiten}, year = {2024}, abstract = {In 1949, Denis Gabor introduced the "complex signal" (nowadays called "analytic signal") by combining a real function fwith its Hilbert transform Hfto a complex function f+iHf. His aim was to extract phase information, an idea that has inspired techniques as the monogenic signal and the complex dual tree wavelet transform. In this manuscript, we consider two questions: When do two real-valued bases or frames {fn:n∈N} and {gn:n∈N} form a complex basis or frame of the form {fn+ign:n∈N}? And for which bounded linear operators Adoes {fn+iAfn:n∈N} form a complex-valued orthonormal basis, Riesz basis or frame, when {fn:n ∈N} is a real-valued orthonormal basis, Riesz basis or frame? We call this approach rebricking. It is well-known that the analytic signals don't span the complex vector space L2(R; C), hence H is not a rebricking operator. We give a full characterization of rebricking operators for bases, in particular orthonormal and Riesz bases, Parseval frames, and frames in general. We also examine the special case of finite dimensional vector spaces and show that we can use any real, invertible matrix for rebricking if we allow for permutations in the imaginary part.}, language = {en} } @article{KehleUrhahne2024, author = {Kehle, Laura and Urhahne, Detlef}, title = {Testing the CONIC model: The interplay of conscientiousness and interest in predicting academic effort}, series = {Learning and Instruction}, volume = {2025}, journal = {Learning and Instruction}, number = {95}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-3263}, doi = {10.1016/j.learninstruc.2024.102050}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19214}, pages = {13 Seiten}, year = {2024}, abstract = {Background This report comprises two studies that more closely examined the Conscientiousness × Interest Compensation (CONIC) model by Trautwein, Nagengast, Roberts, and L{\"u}dtke (2019) under laboratory conditions. The model specifies individual and compensatory effects of conscientiousness and individual interest on academic effort. Aims This research piece examines the assumed relationships between the three core variables of the CONIC model. Samples The first study was conducted with 152 university students and the second study included 120 university students randomly distributed across two experimental conditions and one control condition. Methods In an initial modeling study, we investigated the model assumptions in two different learning contexts and tested them using structural equation modeling (SEM). In a subsequent experimental study, we manipulated the predictor variables of academic effort to either promote conscientious or interest-based learning. The group differences were examined using multigroup SEM. Results In the modeling study, interest was always and conscientiousness at least partially a positive and significant predictor of academic effort. A compensatory effect of interest and conscientiousness could not be found. In the experimental study, promoting conscientious learning resulted in interest showing up as a stronger predictor of academic effort. However, promoting interest-based learning crystallized conscientiousness as the stronger predictor of academic effort. Moreover, the compensatory effect of the two personality traits was significantly stronger in the groups where conscientiousness or interest-based learning was promoted than in the control group. Conclusions Results provide support for the CONIC model and particularly highlight the compensatory effects of conscientiousness and interest at the model's heart.}, language = {en} } @article{GoerigkKurtz2024, author = {Goerigk, Marc and Kurtz, Jannis}, title = {Data-driven prediction of relevant scenarios for robust combinatorial optimization}, series = {Computers \& Operations Research}, volume = {2025}, journal = {Computers \& Operations Research}, number = {174}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-765X}, doi = {10.1016/j.cor.2024.106886}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:739-opus4-19207}, pages = {14 Seiten}, year = {2024}, abstract = {We study iterative constraint and variable generation methods for (two-stage) robust combinatorial optimization problems with discrete uncertainty. The goal of this work is to find a set of starting scenarios that provides strong lower bounds early in the process. To this end we define the Relevant Scenario Recognition Problem (RSRP) which finds the optimal choice of scenarios which maximizes the corresponding objective value. We show for classical and two-stage robust optimization that this problem can be solved in polynomial time if the number of selected scenarios is constant and NP-hard if it is part of the input. Furthermore, we derive a linear mixed-integer programming formulation for the problem in both cases. Since solving the RSRP is not possible in reasonable time, we propose a machine-learning-based heuristic to determine a good set of starting scenarios. To this end, we design a set of dimension-independent features, and train a Random Forest Classifier on already solved small-dimensional instances of the problem. Our experiments show that our method is able to improve the solution process even for larger instances than contained in the training set, and that predicting even a small number of good starting scenarios can considerably reduce the optimality gap. Additionally, our method provides a feature importance score which can give new insights into the role of scenario properties in robust optimization.}, language = {en} }