Fakultät für angewandte Natur- und Geisteswissenschaften
Refine
Year of publication
Document Type
- Article (97)
- Part of a Book (66)
- Conference Proceeding (46)
- Book (13)
- Part of Periodical (7)
- Preprint (4)
- Working Paper (3)
- Master's Thesis (2)
Language
- English (131)
- German (105)
- Multiple languages (2)
Keywords
- Alajos Alois Unger (1814-1848) (3)
- Mátyás Unger the Elder (1789-1862) (2)
- Mátyás Unger the Younger (1824-1878) (2)
- partial differential equations, optimal control, finite-strain elasticity, quasi-Newton method, multigrid preconditioning (2)
- 19th century painting (1)
- 19th-century Hungarian playing cards (1)
- Aggregation, Biomolecular self-assembly, Electrostatic interactions, Charged colloids, Colloids, Proteins, Density functional calculations, Polymers & Soft Matter, Biological Physics, Statistical Physics (1)
- Alajos Unger (1)
- Alajos Unger (1814-1848) (1)
- Alois Alajos Unger (1)
Institute
- Fakultät für angewandte Natur- und Geisteswissenschaften (238)
- Institut Digital Engineering (IDEE) (7)
- Fakultät Elektrotechnik (4)
- Fakultät Maschinenbau (4)
- Fakultät Wirtschaftsingenieurwesen (3)
- Fakultät Angewandte Sozialwissenschaften (1)
- Institut für Energie- und Hochspannungstechnik (IEHT) (1)
- THWS Business School (1)
Im Jahr 2023 dominierte kaum ein wirtschaftspolitisches Thema die öffentliche Debatte so stark wie die Novellierung des Gebäudeenergiegesetzes (GEG). Die vorliegende Forschungsarbeit widmet sich der Untersuchung der medialen Darstellung dieses Gesetzesentwurfs und analysiert die vorherrschenden Diskurspositionen in der öffentlichen Debatte.
Ziel ist es, Qualitätsstandards für die wirtschaftspolitische Berichterstattung bei kontroversen Themen abzuleiten und einen praxisorientierten Leitfaden für 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 „befürwortend-sachlich“ (7,44%). Die Berichterstattung ist überwiegend sachlich, wobei in 42,1% der Artikel eine kritische Tonalität zu erkennen ist. Qualitätsmängel treten vor allem in „kritisch-rhetorischen“ Artikeln auf, während „ausgewogen-sachliche“ und „kritisch-sachliche“ Positionen durch faktenbasierte und gut strukturierte Darstellungen hervorstechen.
Aus den Ergebnissen leitet die Studie neun Qualitätskriterien ab, die praxisorientierte Empfehlungen für den wirtschaftspolitischen Journalismus bieten. Diese Untersuchung unterstreicht die Bedeutung von Ausgewogenheit, Tiefgründigkeit, Vielfalt und Neutralität in der Berichterstattung. Zudem sind die Kriterien Anwendbarkeit, Zugänglichkeit (einschließlich Unterhaltsamkeit), Integrität und Selbstkritik entscheidend für die Aufbereitung kontroverser und komplexer Themen.
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 Mátyás Unger the Elder (1789–1862) and a designer of award-winning playing cards during Vormärz (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.
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.
Computer Vision in Reusable Container Management : Requirements, Conception, and Data Acquisition
()
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.
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.
Revisiting diffusive representations for enhanced numerical approximation of fractional integrals
(2023)
This study reexamines diffusive representations for fractional integrals with the goal of pioneering new variants of such representations. These variants aim to offer highly efficient numerical algorithms for the approximate computation of fractional integrals. The approach seamlessly aligns with established techniques used in addressing problems involving integer-order operators, contributing to a unified framework for numerical solutions.
This paper is devoted to studying the asymptotic behaviour of solutions to generalized noncommensurate fractional systems. To this end, we first consider fractional systems with rational orders and introduce a criterion that is necessary and sufficient to ensure the stability of such systems. Next, from the fractional-order pseudospectrum definition proposed by Sanca et al., we formulate the concept of a rational approximation for the fractional spectrum of a noncommensurate fractional systems with general, not necessarily rational, orders. Our first important new contribution is to
show the equivalence between the fractional spectrum of a noncommensurate linear system and its rational approximation. With this result in hand, we use ideas developed in our earlier work to demonstrate the stability of an equilibrium point to nonlinear systems in arbitrary finite-dimensional spaces. A second novel aspect of our work is the fact that the approach is constructive. Finally, we give numerical simulations to illustrate the merit of the proposed theoretical results.
Sachcomics
(2008)
SachComicWissen
(2018)
Klartext lesen! Unbedingt!
(2018)
Max im Comic
(2020)
Science Comics
(2021)
A New Approach to Shooting Methods for Terminal Value Problems of Fractional Differential Equations
(2023)
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.
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. Mátyás Unger the Elder (1789-1862) andhis like-named son Mátyás 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 Mátyás 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 Mátyás 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.
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 Mátyás (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 János Hofbauer (creator of The Castle of Dévény, 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 Führich 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 Flóris Römer 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.
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
The Unger Family from Győr: The Social Semiotics, Political Iconography and Manufacture of their 19th Century Playing Cards Mátyás (Mathias) Unger the Elder (1789–1862) and his eponymous son Mátyás (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 Mátyás 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 kártya), 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 Däuser 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.
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.
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.
Discourse analysis has greatly relied on the tried and tested methods of data collection as well as on the use of traditional corpora. The question therefore arises as to how far the Internet has changed methodology in discourse analysis and to what degree it will do so in the future. A further issue that results from the possibilities the Web offers is whether traditional corpora will still be necessary to thoroughly investigate the structure and functioning of language and discourse, with regard to both native and non-native speech. In this paper the opportunities the Internet offers, the availability of tools to the researcher in using the Internet in DA but also the limits and dangers the linguist is prone to encounter will be investigated. And finally it will be discussed whether traditional empirical methods will still play any role in discourse analysis in future.
Diffusive representations of fractional differential and integral operators can provide a convenient means to construct efficient numerical algorithms for their approximate evaluation. In the current literature, many different variants of such representations have been proposed. Concentrating on Riemann-Liouville integrals whose order is in (0,1), we here present a general approach that comprises most of these variants as special cases and that allows a detailed investigation of the analytic properties of each variant. The availability of this information allows to choose concrete numerical methods for handling the representations that exploit the specific properties, thus allowing to construct very efficient overall methods.
Diffusive representations of fractional derivatives have proven to be useful tools in the construction of fast and memory efficient numerical methods for solving fractional differential equations. A common challenge in many of the known variants of this approach is that they require the numerical approximation of some integrals over an unbounded integral whose integrand decays rather slowly, which implies that their numerical handling is difficult and costly. We present a novel variant of such a diffusive representation. This form also requires the numerical approximation of an integral over an unbounded domain, but the integrand decays much faster. This property allows to use well established quadrature rules with much better convergence properties.
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.