@article{DamelinDiethelm, author = {Damelin, Steven B. and Diethelm, Kai}, title = {An Analytic and Numerical Analysis of Weighted Singular Cauchy Integrals with Exponential Weights on ℝ}, series = {Numerical Functional Analysis and Optimization}, volume = {43}, journal = {Numerical Functional Analysis and Optimization}, number = {13}, doi = {10.1080/01630563.2022.2112051}, pages = {1538 -- 1577}, abstract = {This article concerns an analytic and numerical analysis of a class of weighted singular Cauchy integrals with exponential weights w:= exp (-Q) with finite moments and with smooth external fields Q:R→[0,∞), with varying smooth convex rate of increase for large argument. Our analysis relies in part on weighted polynomial interpolation at the zeros of orthonormal polynomials with respect to w2. We also study bounds for the first derivatives of a class of functions of the second kind for w2.}, language = {en} } @article{Diethelm, author = {Diethelm, Kai}, title = {A New Diffusive Representation for Fractional Derivatives, Part II: Convergence Analysis of the Numerical Scheme}, series = {Mathematics}, volume = {10}, journal = {Mathematics}, number = {8}, doi = {10.3390/math10081245}, abstract = {Recently, we have proposed a new diffusive representation for fractional derivatives and, based on this representation, suggested an algorithm for their numerical computation. From the construction of the algorithm, it is immediately evident that the method is fast and memory-efficient. Moreover, the method's design is such that good convergence properties may be expected. In this paper, we commence a systematic investigation of these convergence properties.}, language = {en} } @misc{Wunderlich, author = {Wunderlich, Claudia}, title = {A győri Unger csal{\´a}d: t{\´a}rsadalmi szemiotika, politikai ikonogr{\´a}fia {\´e}s a 19. sz{\´a}zadi j{\´a}t{\´e}kk{\´a}rtyak{\´e}sz{\´i}t{\´e}s}, series = {Ethnographia}, volume = {133/3}, journal = {Ethnographia}, publisher = {Ungarische Volkskundegesellschaft}, address = {Budapest}, organization = {Ungarische Volkskundegesellschaft, Ungarisches Volkskundemuseum Budapest, Ungarische Akademie der Wissenschaften}, issn = {0014-1798}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-43640}, pages = {22}, abstract = {The Unger Family from Győr: The Social Semiotics, Political Iconography and Manufacture of their 19th Century Playing Cards M{\´a}ty{\´a}s (Mathias) Unger the Elder (1789-1862) and his eponymous son M{\´a}ty{\´a}s (Mathias) the Younger (1824-1878) from Győr are prominent in the history of the Hungarian playing cards. Due to more recent research, new details about the family and their playing cards have surfaced. This includes the fact that another son of M{\´a}ty{\´a}s Unger the Elder was Alajos (Alois) Unger (1814-1848), an academic painter trained at the Vienna Academy of Arts, particularly under Leopold Kupelwieser and Johann Ender, in late Nazarene, late Romantic style. New findings on the Unger playing cards are presented drawing on social semiotics and its relationship to political iconography, whereby cards are considered as text and the two categories of denotation and connotation pivotal. Change in connotation and meaning is analysed to provide further explanation for how the four season cards, i.e. Tell cards (magyar k{\´a}rtya), today's standard pattern, came about with lost Unger playing cards serving as a missing link. These Unger cards reflected the art policy of the Austrian Empire of the time as image propaganda for the Casa d'Austria linked with the pietas austriaca/hungarica, in line with Alajos Unger's oil paintings. Over time, the connotation of the Tell cards changed into a clear anti-Habsburg stance. Further reasons for why this pattern became standard in Hungary and how the four seasoned D{\"a}user cards, popularized by the Ungers, must have become part of it are also given. Against this background, a novel bottom-up material flow simulation approach is proposed to investigate the artisanal playing card production process, output and profitability of the small workshop of the Ungers together with a research agenda for adapting it to the building and conditions of the last known production site, all on the basis of a reconstruction.}, language = {mul} } @article{GuennelHerzog, author = {G{\"u}nnel, Andreas and Herzog, Roland}, title = {Optimal Control Problems in Finite-Strain Elasticity by Inner Pressure and Fiber Tension}, series = {Frontiers in Applied Mathematics and Statistics}, volume = {2}, journal = {Frontiers in Applied Mathematics and Statistics}, doi = {10.3389/fams.2016.00004}, abstract = {Optimal control problems for finite-strain elasticity are considered. An inner pressure or an inner fiber tension is acting as a driving force. Such internal forces are typical, for instance, for the motion of heliotropic plants, and for muscle tissue. Non-standard objective functions relevant for elasticity problems are introduced. Optimality conditions are derived on a formal basis, and a limited-memory quasi-Newton algorithm for their solution is formulated in function space. Numerical experiments confirm the expected mesh-independent performance.}, language = {en} } @article{MakowskiHerzog, author = {Makowski, Andreas and Herzog, Roland}, title = {Optimal Control of Large Deformation Elasticity by Fiber Tension}, series = {Proceedings in Applied Mathematics and Mechanics}, volume = {2014}, journal = {Proceedings in Applied Mathematics and Mechanics}, number = {14}, doi = {10.1002/pamm.201410420}, pages = {879 -- 880}, abstract = {Object of our interest is an elastic body Ω ⊂ ℝ3 which we can deform by applying a tension along certain given short fibers inside the body. The deformation of the body is desribed by a hyperelastic model with polyconvex energy density and a special energy functional for the tension along the fibers. We seek to apply (possibly large) deformations to the body so that a desired shape is obtained. To this end, we formulate an optimal control problem for the fiber tension field.}, language = {en} } @inproceedings{Claudia, author = {Claudia, Wunderlich}, title = {Teaching Intercultural Skills through a Global Business Simulation}, editor = {Ministerium f{\"u}r ausw{\"a}rtige Angelegenheiten der Ukraine, Diplomatische Akademie der Ukraine}, publisher = {Diplomatische Akademie der Ukraine}, address = {Kiev}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-43432}, pages = {264}, abstract = {This paper reports on how intercultural skills can be taught in English for Specific Purposes courses (ESP) in addition to reading, writing, listening, and speaking skills in a global business simulation}, language = {en} } @misc{Wunderlich, author = {Wunderlich, Claudia}, title = {K{\´e}sőnazar{\´e}nus, k{\´e}ső romantikus {\´e}s k{\´a}rtyatervező: a Kupelwieser-tan{\´i}tv{\´a}ny Unger Alajos {\´u}jrafelfedez{\´e}se}, series = {Arrabona}, volume = {50/2}, journal = {Arrabona}, publisher = {Fl{\´o}ris-R{\´o}mer-Museum Gy{\"o}r}, address = {Gy{\"o}r}, organization = {Fl{\´o}ris-R{\´o}mer-Museum Gy{\"o}r}, issn = {571-1304}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-43519}, pages = {56}, abstract = {Alajos (Alois) Unger, who was descended from the well-known Unger playing- card making family from Győr, is a recently rediscovered Hungarian late Nazarene and late Romanticist artist. The son and brother of the playing-card makers M{\´a}ty{\´a}s (Mathias) Unger the Elder (1789-1862) and Younger (1824-78), he was originally apprenticed in this craft as well and, as could be proved for the first time, designed the family's playing-cards. First trained at the National Drawing School of his hometown under J{\´a}nos Hofbauer (creator of The Castle of D{\´e}v{\´e}ny, Hungarian National Gallery), which apprentices and journeymen of the local crafts attended, Alajos Unger enrolled at the Vienna Academy of Fine Arts first in 1833 to train there as a draughtsman and then became a pupil of Leopold Kupelwieser (1796-1862) from 1836 until 1842. Among his classmates were the famous artists Eduard von Engerth (1818-97), Franz Josef Dobiaschofsky (1818-67), Ferenc Szoldatits (1820-1916) and August von Pettenkofen (1822-1889). In an art exhibition in Győr in 1903 the quality of Unger's genre paintings displayed there was likened to those of the latter. It has now been possible to demonstrate how strongly his art was rooted in the late Nazarene and late Romanticist tradition of the circle around his teacher. Overall, his style not only reflects the ''literary-musical-artistic" orientation of Kupelwieser, but also the "fairytale-like-poetical" variety represented by Joseph von F{\"u}hrich and particularly Moritz von Schwind. Alajos Unger had until recently only been known by name, but with the present article, a fuller picture of the artist's life and work has been presented. Thus, apart from the two oil paintings, which came into the possession of the Hungarian National Gallery in the 1970s, The Recapture ofRaab (1840) and a portrait of the artist and his family (1843), a series of hitherto unknown oilworks has been discovered: a portrait of an unknown lady (1836), now part of the art collection of the University of Pennsylvania, a copy of Cesare da Sesto's La vierge au bas-relief (date unknown), the Baptism of Vajk (1842) and a Biedermeier picture clock depicting a patriotic scene from the opera Lucia di Lammermoor set against the backdrop of a veduta of Venice (1847). The portrait of Ferenc Hergeszell, a local politician from Unger's hometown and later member of the Hungarian Diet, from 1841, now in the collection of the Fl{\´o}ris R{\"o}mer Museum in Győr, also bears Unger's painterly handwriting. Altogether, the torso of the extraordinary work of a representative of a younger generation of Nazarenes, who promoted Hungarian national art, has been unveiled in the bicentenary of his birth. In addition to this, the role of Nazarene artists and that of their networks in the development of Hungarian art generally was investigated.}, language = {mul} } @inproceedings{Wunderlich, author = {Wunderlich, Claudia}, title = {The influence of Nazarene Art on the development of Hungarian national art and the crafts. The academic painter Alajos (Alois) Unger (Bap Győr 29 Oct 1814 - Győr 28 Dec 1848)}, editor = {Wunderlich, Claudia}, publisher = {SZTE BTK N{\´e}prajzi {\´e}s Kultur{\´a}lis Antropol{\´o}giai Tansz{\´e}k}, address = {Szeged}, isbn = {978-963-306-260-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-43529}, pages = {37}, abstract = {This paper will deals with the Nazarene Movement and its art in Hungary with special reference to Alajos (Alois) Unger, a recently rediscovered artist of Hungary's Reform Era, his links to Nazarene art, the relevance of (functional) semiotics in the interpretation of Nazarene works and the influence of the Nazarene Movement on the arts and crafts of the 19th century. This includes the design of new playing-card patterns in Hungary}, language = {en} } @misc{Wunderlich, author = {Wunderlich, Claudia}, title = {THE ICONOGRAPHY, DESIGN AND MANUFACTURE OF THE 19 TH CENTURY PLAYING-CARDS BY THE UNGER FAMILY FROM GYŐR}, series = {Acta Ethnographica Hungarica}, volume = {57/2}, journal = {Acta Ethnographica Hungarica}, publisher = {Hungarian Academy of Sciences}, address = {Budapest}, organization = {Hungarian Academy of Sciences}, issn = {1216-9803}, doi = {10.1556/AEthn.57.2012.2.4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-43509}, pages = {22}, abstract = {The present article offers new evidence on the Unger playing-card making family of Győr,Western Transdanubia, as the result of a cross-disciplinary study. M{\´a}ty{\´a}s Unger the Elder (1789-1862) andhis like-named son M{\´a}ty{\´a}s the Younger (1824-1878) produced various types of playing-cards from theearly to mid-19th century. In particular, their cards, their iconography, design and production process will beanalysed. The family is best known for their cards with Sopron (Oedenburg) pattern. Also discussed will bethe role of M{\´a}ty{\´a}s the Elder's second eldest son Alajos Unger as a possible designer of the later Unger cards,which were of considerably higher quality than the earlier known ones by M{\´a}ty{\´a}s Unger the Elder. Thehitherto little-known Alajos Unger was trained as a draughtsman and painter first at the National DrawingSchool of his hometown and then, between 1833 and 1842, at the Vienna Academy of Fine Arts, particularlyunder Leopold Kupelwieser (1796-1862). Finally an innovative outside-in bottom-up method for gainingfurther, reliable insight into 19thcentury artisanal playing-card manufacturing will be proposed to determinethe size, output and profitability of the Unger workshop based on material-flow simulation.}, language = {en} } @article{DiethelmUhlig, author = {Diethelm, Kai and Uhlig, Frank}, title = {A New Approach to Shooting Methods for Terminal Value Problems of Fractional Differential Equations}, series = {Journal of Scientific Computing}, volume = {97}, journal = {Journal of Scientific Computing}, number = {2}, issn = {0885-7474}, abstract = {For terminal value problems of fractional differential equations of order α∈(0,1) that use Caputo derivatives, shooting methods are a well developed and investigated approach. Based on recently established analytic properties of such problems, we develop a new technique to select the required initial values that solves such shooting problems quickly and accurately. Numerical experiments indicate that this new proportional secting technique converges very quickly and accurately to the solution. Run time measurements indicate a speedup factor of between 4 and 10 when compared to the standard bisection method.}, language = {en} } @article{Bier, author = {Bier, Markus}, title = {Non-equilibrium steady states of electrolyte interfaces}, series = {New Journal of Physics}, volume = {26}, journal = {New Journal of Physics}, number = {1}, pages = {013008}, abstract = {The non-equilibrium steady states of a semi-infinite quasi-one-dimensional univalent binary electrolyte solution, characterised by non-vanishing electric currents, are investigated by means of Poisson-Nernst-Planck (PNP) theory. Exact analytical expressions of the electric field, the charge density and the number density are derived, which depend on the electric current density as a parameter. From a non-equilibrium version of the Grahame equation, which relates the total space charge per cross-sectional area and the corresponding contribution of the electric potential drop, the current-dependent differential capacitance of the diffuse layer is derived. In the limit of vanishing electric current these results reduce to those within Gouy-Chapman theory. It is shown that improperly chosen boundary conditions lead to non-equilibrium steady state solutions of the PNP equations with negative ion number densities. A necessary and sufficient criterion on surface conductivity constitutive relations is formulated which allows one to detect such unphysical solutions.}, language = {en} } @article{StorathWeinmann, author = {Storath, Martin and Weinmann, Andreas}, title = {Smoothing Splines for Discontinuous Signals}, series = {Journal of Computational and Graphical Statistics}, volume = {33}, journal = {Journal of Computational and Graphical Statistics}, number = {2}, publisher = {Informa UK Limited}, issn = {1061-8600}, doi = {10.1080/10618600.2023.2262000}, pages = {651 -- 664}, language = {en} } @inproceedings{StorathWeinmann2024, author = {Storath, Martin and Weinmann, Andreas}, title = {Solving higher-order Mumford-Shah models}, series = {INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: ICNAAM2022}, booktitle = {INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: ICNAAM2022}, publisher = {AIP Publishing}, issn = {0094-243X}, doi = {10.1063/5.0210598}, year = {2024}, language = {en} } @incollection{ZieglerIsingDobhanetal.2023, author = {Ziegler, Cedric C. and Ising, Julia and Dobhan, Alexander and Storath, Martin}, title = {Computer Vision in Reusable Container Management : Requirements, Conception, and Data Acquisition}, series = {Logistik und Supply Chain Management}, booktitle = {Logistik und Supply Chain Management}, publisher = {University of Bamberg Press}, isbn = {9783863099411}, issn = {2750-8277}, doi = {https://10.20378/irb-92408}, pages = {107 -- 122}, year = {2023}, abstract = {In container management, the reuse of small load carriers is a business alternative to disposal carriers. Reusable container management is furthermore a solution to improve the environmental impact of the logistic industry. The sorting and stock management of small load carriers are today primarily manual work and have consequently a low level of automation. In order to increase the automation of returnable containers, it is crucial to establish a computer vision system that (i) classifies the containers and (ii) detects potential defects or stains. This paper provides an overview and a discussion of the applications that are already in use. Object detection is necessary for many actions in the container management business processes, such as inventory and stock management. Detection of defects on the small load carrier is required for scrapping the carriers to ensure a smooth process in any business process involving the carrier and to decide whether additional process steps, e.g., cleaning, are required. The literature review in this paper establishes the demand for computer vision detection and shows the project setup necessary to conduct research in this area. The comparison with other applications of defect and anomaly detection supports the applicability and shows the need for further research in this specific academic field. This leads to a project outline and the research provides the technical implementation of the detections in container management. Accordingly, the research provides a work- flow guide from data acquisition to a high-quality dataset of labeled anomalies of small load carriers.}, language = {en} } @inproceedings{TargitayRothZinketal., author = {Targitay, Deniz and Roth, Lisa and Zink, Markus H. and K{\"u}chler, Andreas and Bier, Markus and Kobus, Maja and Geißler, Michael and Schlittler, Balz}, title = {An FEM simulation model of oil-pressboard insulating systems for HVDC transformers}, series = {23rd International Symposium on High Voltage Engineering (ISH 2023)}, booktitle = {23rd International Symposium on High Voltage Engineering (ISH 2023)}, publisher = {Institution of Engineering \& Technology}, pages = {7}, abstract = {In this contribution, a simulation model for the description of the nonlinear dielectric behaviour of an insulation system composed of mineral oil and oil-impregnated pressboard is presented. The model was verified by comparing the simulation results with electric field and current measurements. At the outset, the ideal case, where a homogeneous initial charge carrier distribution according to the definition of ohmic conductivity is present, is analysed to establish the preliminary foundations pertaining to a typical measurement. Following that, the influence of distinct charge carriers on the measured quantities are investigated by altering their parametrisations. In contrast to the ideal case, a real measurement reveals a current trend, that can be explained by an excess amount of initial charge carriers related to the oil-impregnated pressboard layers. Potential possibilities to the origin of the surplus are discussed. Furthermore, it is shown that the dissociable and intrinsic charge carriers alone can reconstruct the measured quantities in terms of the transient behaviour. This points out that, for the field strength studied here ( E ≤ 1 kV/mm ), the charging of the highly resistive pressboard barriers is dominated by the dissociation of charge carriers in the oil gaps.}, language = {en} } @misc{OPUS4-1913, title = {FHWS Science Journal (5, 1)}, volume = {5 (2021)}, number = {1}, editor = {Grebner, Robert}, address = {W{\"u}rzburg}, organization = {Hochschule f{\"u}r Angewandte Wissenschaften W{\"u}rzburg-Schweinfurt}, issn = {2196-6095}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-19135}, pages = {116}, abstract = {[D]ie Beitr{\"a}ge im vorliegenden FHWS Science Journal [dienen] dazu, einen Ein- und {\"U}berblick {\"u}ber eine Auswahl erfolgreicher Maßnahmen zu geben, die im Rahmen des BEST-FIT-Projektes entwickelt wurden und die erarbeiteten Methoden, Konzepte und Ergebnisse mit interessierten Lehrenden zu teilen. Nur wenn es gelingt, erfolgreiche Maßnahmen auch nach dem Ende der F{\"o}rderperiode an der FHWS weiterzuf{\"u}hren und auf weitere Studieng{\"a}nge und Fakult{\"a}ten zu {\"u}bertragen, k{\"o}nnen die Ziele von BEST-FIT und insgesamt des Qualit{\"a}tspakts Lehre nachhaltig und dauerhaft erreicht und gesichert werden.}, language = {de} } @techreport{Wunderlich, type = {Working Paper}, author = {Wunderlich, Claudia}, title = {M A K Halliday's Systemic Functional Linguistics and the Hermeneutic Spiral: Interpreting Alajos Unger's late Nazarene painting Baptism of Vajk (1842)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-57169}, pages = {20}, abstract = {Michael O'Toole's functional semiotic model based on Hallidayan linguistics is applied to a hermeneutic analysis of 19th century art of the Austrian Empire. The obscure painter Alajos Unger (1814-1848) from Győr, Hungary, was the son of playing-card maker M{\´a}ty{\´a}s Unger the Elder (1789-1862) and a designer of award-winning playing cards during Vorm{\"a}rz (the Reform Era in Hungary). He trained at the Vienna Art Academy, and two of his paintings (The recapture of Győr 1598, 1840; Family portrait, 1843) are in the collection of the Hungarian National Gallery. His Baptism of Vajk (1842) is the only such Nazarene history painting known in Hungarian art. Nazarene art, recently reappraised as modern, conceptual art, influenced the British Pre-Raphaelites and thus modern Hungarian art. Due to its symbolic nature, it is ideal for functional semiotic interpretation. Such an analysis of Unger's Baptism of Vajk identifies its patriotic, yet conservative, Catholic pro-Habsburg stance promoting dynastic piety (Pietas Hungarica) and a supra-national, cosmopolitan stance opposed to nationalist rhetoric as part of a cycle of paintings created by the artist.}, language = {en} } @misc{Strauss, type = {Master Thesis}, author = {Strauß, Sebastian}, title = {Qualit{\"a}tsstandards im wirtschaftspolitischen Journalismus}, editor = {Fr{\"u}hbrodt, Prof. Dr. Lutz}, address = {W{\"u}rzburg}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-57209}, school = {Technische Hochschule W{\"u}rzburg-Schweinfurt}, pages = {121}, abstract = {Im Jahr 2023 dominierte kaum ein wirtschaftspolitisches Thema die {\"o}ffentliche Debatte so stark wie die Novellierung des Geb{\"a}udeenergiegesetzes (GEG). Die vorliegende Forschungsarbeit widmet sich der Untersuchung der medialen Darstellung dieses Gesetzesentwurfs und analysiert die vorherrschenden Diskurspositionen in der {\"o}ffentlichen Debatte. Ziel ist es, Qualit{\"a}tsstandards f{\"u}r die wirtschaftspolitische Berichterstattung bei kontroversen Themen abzuleiten und einen praxisorientierten Leitfaden f{\"u}r Journalisten zu entwickeln. Unter Anwendung der Wissenssoziologischen Diskursanalyse nach Keller werden Artikel aus BILD, taz, F.A.Z. und SZ empirisch analysiert. Die Ergebnisse zeigen vier dominante Diskurspositionen: „ausgewogen-sachlich" (38,02\%), „kritisch-sachlich" (24,79\%), „kritisch-rhetorisch" (29,75\%) und „bef{\"u}rwortend-sachlich" (7,44\%). Die Berichterstattung ist {\"u}berwiegend sachlich, wobei in 42,1\% der Artikel eine kritische Tonalit{\"a}t zu erkennen ist. Qualit{\"a}tsm{\"a}ngel treten vor allem in „kritisch-rhetorischen" Artikeln auf, w{\"a}hrend „ausgewogen-sachliche" und „kritisch-sachliche" Positionen durch faktenbasierte und gut strukturierte Darstellungen hervorstechen. Aus den Ergebnissen leitet die Studie neun Qualit{\"a}tskriterien ab, die praxisorientierte Empfehlungen f{\"u}r den wirtschaftspolitischen Journalismus bieten. Diese Untersuchung unterstreicht die Bedeutung von Ausgewogenheit, Tiefgr{\"u}ndigkeit, Vielfalt und Neutralit{\"a}t in der Berichterstattung. Zudem sind die Kriterien Anwendbarkeit, Zug{\"a}nglichkeit (einschließlich Unterhaltsamkeit), Integrit{\"a}t und Selbstkritik entscheidend f{\"u}r die Aufbereitung kontroverser und komplexer Themen.}, language = {de} }