cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: „Wieso darf ich nicht diese Rolle spielen?“ SP-TrainerInnen im Spannungsfeld zwischen Vertrauen und Grenzsetzung
Creators: name: Sommer, Michael
name: Rockenbauch, Katrin
name: Philipp, Swetlana
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Relevanz/Ziel: Simulationspersonen (SP) sind ein Glücksfall für die medizinische Ausbildung und meist begeistert bei der Sache. Wer SP ausbildet, weiß aber auch, dass es bisweilen Schwierigkeiten gibt. Da treten manche SP sehr fordernd gegenüber der/dem SP-TrainerIn auf,[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsame Jahrestagung der Gesellschaft für Medizinische Ausbildung (GMA), des Arbeitskreises zur Weiterentwicklung der Lehre in der Zahnmedizin (AKWLZ) und der Chirurgischen Arbeitsgemeinschaft Lehre (CAL)
Theory of Incompressible States in a Narrow Channel
Creators: name: Chakraborty, Tapash
name: Niemelä, K.
name: Pietiläinen, P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the properties of a system of interacting electrons in a narrow channel in the quantum Hall effect regime. It is shown that an increase in the strength of the Coulomb interaction causes abrupt changes in the width of the charge-density profile of translationally invariant states. We derive a phase diagram which includes many of the stable odd-denominator states as well as a novel fractional quantum Hall state at lowest half-filled Landau level. The collective mode evaluated at the half-filled case is strikingly similar to that for an odd-denominator fractional quantum Hall state.
description: 4 pages, REVTEX, and 4 .ps files
Cutting circuits with multiple two-qubit unitaries
Creators: name: Schmitt, Lukas
name: Piveteau, Christophe
name: Sutter, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quasiprobabilistic cutting techniques allow us to partition large quantum circuits into smaller subcircuits by replacing non-local gates with probabilistic mixtures of local gates. The cost of this method is a sampling overhead that scales exponentially in the number of cuts. It is crucial to determine the minimal cost for gate cutting and to understand whether allowing for classical communication between subcircuits can improve the sampling overhead. In this work, we derive a closed formula for the optimal sampling overhead for cutting an arbitrary number of two-qubit unitaries and provide the corresponding decomposition. We find that cutting several arbitrary two-qubit unitaries together is cheaper than cutting them individually and classical communication does not give any advantage.
description: (v2): 24 pages, 5 figures, published version
Ueckermannseius Chant & McMurtry 2005
Creators: name: Kreiter, Serge
name: Payet, Rose-My
name: Abo-Shnaf, Reham
name: Douin, Martial
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Ueckermannseius

description: Genus Ueckermannseius Chant & McMurtry
 Ueckermannia Chant & McMurtry 2005a: 201. Preoccupied by Ueckermannia Kaźmierski, 1996 (Tydeidae).
 Ueckermannseius Chant & McMurtry 2005b: 337, 2007: 115.
description: Published as part of Kreiter, Serge, Payet, Rose-My, Abo-Shnaf, Reham & Douin, Martial, 2021, New Phytoseiidae (Acari: Mesostigmata) of Mascareignes and Comoros Archipelagos (Indian Ocean): one new record, three new species groups and description of six new species and of six unknown males, pp. 845-889 in Acarologia 61 (4) on page 868, DOI: 10.24349/Krky-e23s, http://zenodo.org/record/7159750
Quantum spheres as graph C*-algebras: a review
Creators: name: D'Andrea, Francesco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: Primary: 20G42, Secondary: 58B32, 46L89

description: In this survey, we discuss the description of Vaksman-Soibelman quantum spheres using graph C*-algebras, following the seminal work of Hong and Szymański. We give a slightly different proof of the isomorphism with a graph C*-algebra, borrowing the idea of Mikkelsen and Kaad of using conditional expectations to prove the desired result.
description: 27 pages. v3: this is a shortened version of the original paper. Sections 4 and 5 of the old version will appear separately. v4: minor corrections
Magnetically-driven structural phase transition in hexamethylbenzene
Creators: name: Yen, Fei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The methyl groups in hexamethylbenzene C$_6$(CH$_3$)$_6$ become magnetically ordered at the molecular level below 118 K. This is also near the temperature at which the system structurally transitions from triclinic to a unique near-cubic phase. High-precision measurements of the near-static dielectric constant reveal that the structural phase transition is actually comprised of four successive transformations upon cooling at T$_1$=110.7 K, T$_2$=109.5 K, T$_3$=109.1 K and T$_4$=107.8 K. In contrast to warming, only two transitions occur at T'$_4$=119.2 K and T'$_1$=120.9 K. The methyl groups in the near-cubic phase become slightly distorted according to existing neutron powder diffraction measurements. Analysis of the 2$^6$=64 possible spin orientation configurations of the methyl groups reveal a 20-fold ground state degeneracy presiding in each molecule rendering the system to become highly unstable. From such, it is interpreted that T$_1$ and T$_2$ are temperatures at which the molecules successively lower their symmetry to remove the energy degeneracy which involve methyl group elongation and further out-of-plane tilting. This triggers the system to phase transition into the near-cubic phase which involves a shearing of the molecular planes and partial rotation of the methyl groups at T$_3$ and T$_4$. We interpret the low temperature near-cubic phase to be a manifestation of Jahn-Teller distortions based on energy degeneracies of the orbital motion of protons in each molecule and suggest that the metastable nature of the phase transition originates from the methyl groups requiring a larger amount of energy to order than to disorder. Our findings help explain why many unusual structural phase transitions occur at low temperatures in other molecular crystals possessing periodic motion of protons.
description: 14 pages (1.5 spaced, 3 figures + 1 'Table of Contents' graphic; accepted (on Dec. 4th, 2018) by the Journal of Physical Chemistry C
title: Geschäftsordnung der Komission für Frauenförderung und Gleichstellung der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Geschäftsstelle des Präsidiums
Year: 2003
Subjects: subject: Geschäftsordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 260
title: Organisationsplan für den Fachbereich Physik und Geowissenschaften Umbenennung des Instituts für Geowissenschaften in Institut für Umweltgeologie
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fachbereich 2
Year: 2003
Subjects: subject: Organisationsplan
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 259
A Transformer-Based Adaptive Semantic Aggregation Method for UAV Visual Geo-Localization
Creators: name: Li, Shishen
name: Liu, Cuiwei
name: Qiu, Huaijun
name: Li, Zhaokui
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper addresses the task of Unmanned Aerial Vehicles (UAV) visual geo-localization, which aims to match images of the same geographic target taken by different platforms, i.e., UAVs and satellites. In general, the key to achieving accurate UAV-satellite image matching lies in extracting visual features that are robust against viewpoint changes, scale variations, and rotations. Current works have shown that part matching is crucial for UAV visual geo-localization since part-level representations can capture image details and help to understand the semantic information of scenes. However, the importance of preserving semantic characteristics in part-level representations is not well discussed. In this paper, we introduce a transformer-based adaptive semantic aggregation method that regards parts as the most representative semantics in an image. Correlations of image patches to different parts are learned in terms of the transformer's feature map. Then our method decomposes part-level features into an adaptive sum of all patch features. By doing this, the learned parts are encouraged to focus on patches with typical semantics. Extensive experiments on the University-1652 dataset have shown the superiority of our method over the current works.
description: 12 pages
Typhlodrominae Wainstein
Creators: name: Kreiter, Serge
name: Payet, Rose-My
name: Abo-Shnaf, Reham
name: Douin, Martial
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae

description: Subfamily Typhlodrominae Wainstein  Typhlodromini Wainstein 1962: 26 and Typhlodrominae Chant & McMurtry 1994: 235.
description: Published as part of Kreiter, Serge, Payet, Rose-My, Abo-Shnaf, Reham & Douin, Martial, 2021, New Phytoseiidae (Acari: Mesostigmata) of Mascareignes and Comoros Archipelagos (Indian Ocean): one new record, three new species groups and description of six new species and of six unknown males, pp. 845-889 in Acarologia 61 (4) on page 880, DOI: 10.24349/Krky-e23s, http://zenodo.org/record/7159750
MOESM2 of EvolvingSTEM: a microbial evolution-in-action curriculum that enhances learning of evolutionary biology and biotechnology
Creators: name: Cooper, Vaughn
name: Warren, Taylor
name: Matela, Abigail
name: Handwork, Michael
name: Scarponi, Shani
Publisher: name: figshare
Year: 2019
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2. EvolvingSTEM experimental protocol.
Interviews conducted in 2019
Creators: name: Bilgic, Ali
Publisher: name: Loughborough University
Year: 2024
Subjects: classificationCode: 44
subject: Human society

description: Interviews conducted by church members from minoritised and racialised communities in December 2019.These files are part of a project was run by the Diocese of Leicester entitled ‘BAME Intercultural Worshipping Communities’ (2019-2024) funded by the Church of England Strategic Development Fund. Data on on BAME representation in and inclusion to worshipping communities in Leicestershire were collected and analyzed.
title: Studienordnung für den Studiengang Geoökologie
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fachbereich 2
Year: 2003
Subjects: subject: Studienordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 258
Supplementary Results including tables and figures from Dual stressors of infection and warming can destabilize host microbiomes
Creators: name: LI, J. D.
name: Gao, Y. Y.
name: Stevens, E. J.
name: King, K. C.
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: This file contains sections below: Legend of Supplementary Tables (SI Tables were in a separate Excel workbook) Supplementary Figures (Fig. S1-8, and see Fig. S9-11 in SI Results) Supplementary Methods and Results (Table 1-3, Fig. S9-11) List of Reference
title: Organisationsplan für den Fachbereich für Maschinenbau Umbenennung des Instituts für Schweißtechnik in Institut für Füge- und Schweißtechnik
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fachbereich 7
Year: 2003
Subjects: subject: Organisationsplan
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 257
Preface
Creators: name: Chrysanthopoulos, Michalis
name: Douka-Kabitoglou, Ekaterini
name: Tsirimokou, Lizy
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Typhlodromini Wainstein 1962
Creators: name: Kreiter, Serge
name: Payet, Rose-My
name: Abo-Shnaf, Reham
name: Douin, Martial
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae

description: Tribe Typhlodromini Wainstein  Typhlodromini Wainstein 1962: 26.
description: Published as part of Kreiter, Serge, Payet, Rose-My, Abo-Shnaf, Reham & Douin, Martial, 2021, New Phytoseiidae (Acari: Mesostigmata) of Mascareignes and Comoros Archipelagos (Indian Ocean): one new record, three new species groups and description of six new species and of six unknown males, pp. 845-889 in Acarologia 61 (4) on page 880, DOI: 10.24349/Krky-e23s, http://zenodo.org/record/7159750
The Wall and the Wallpaper: Thoughts on the Afterlife of Lyricism
Creators: name: Kapsalis, Dionysis
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: Τ. S. Eliot’s writings lend this paper its title and its theme: what is the relationship between illusion and reality in poetic discourse? However the approach is no doubt post-new-critical, especially in the way it problematizes the issue of the reader/public of poetry and the cultural identity of the poet. This is often determined by “embarrassment”, a feeling that negatively conditions the poet's answer to the question “what is the function of poetry”: can, after all the wallpaper save us when the walls have collapsed? Or is there always a Harpo Marx holding a wall that will collapse as soon as he moves to the next scene of the film?
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Multi-Physics Model Bias Correction with Data-Driven Reduced Order Modelling Techniques: Application to Nuclear Case Studies
Creators: name: Riva, Stefano
name: Introini, Carolina
name: Cammi, Antonio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Nowadays, interest in combining mathematical knowledge about phenomena and data from the physical system is growing. Past research was devoted to developing so-called high-fidelity models, intending to make them able to catch most of the physical phenomena occurring in the system. Nevertheless, models will always be affected by uncertainties related, for example, to the parameters and inevitably limited by the underlying simplifying hypotheses on, for example, geometry and mathematical equations; thus, in a way, there exists an upper threshold of model performance. Now, research in many engineering sectors also focuses on the so-called data-driven modelling, which aims at extracting information from available data to combine it with the mathematical model. Focusing on the nuclear field, interest in this approach is also related to the Multi-Physics modelling of nuclear reactors. Due to the multiple physics involved and their mutual and complex interactions, developing accurate and stable models both from the physical and numerical point of view remains a challenging task despite the advancements in computational hardware and software, and combining the available mathematical model with data can further improve the performance and the accuracy of the former.
 This work investigates this aspect by applying two Data-Driven Reduced Order Modelling (DDROM) techniques, the Generalised Empirical Interpolation Method and the Parametrised-Background Data-Weak formulation, to literature benchmark nuclear case studies. The main goal of this work is to assess the possibility of using data to perform model bias correction, that is, verifying the reliability of DDROM approaches in improving the model performance and accuracy through the information provided by the data. The obtained numerical results are promising, foreseeing further investigation of the DDROM approach to nuclear industrial cases.
MOESM1 of EvolvingSTEM: a microbial evolution-in-action curriculum that enhances learning of evolutionary biology and biotechnology
Creators: name: Cooper, Vaughn
name: Warren, Taylor
name: Matela, Abigail
name: Handwork, Michael
name: Scarponi, Shani
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Materials needed and media recipes.
A system of four ODEs: the singularity analysis
Creators: name: Sakovich, Sergei Yu.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The singularity analysis is carried out for a system of four first-order quadratic ODEs with a parameter, which was proposed recently by Golubchik and Sokolov. A transformation of dependent variables is revealed by the analysis, after which the transformed system possesses the Painlevé property and does not contain the parameter.
Notes on Modern Greek Poetry
Creators: name: Anghelaki-Rooke, Katerina
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The paper evaluates the legacy of our great poets - Seferis, Elytis, Ritsos - in terms of recent poetic production, given that they all had as a main poetic task to define or redefine our Greekness in the present time. For Seferis Greekness is this peculiar feeling, a glance that combines “ancient statues and contemporary sorrow”, meaning, of course, the Asia Minor disaster. Elytis found the line that unites all moments of Greekness in the sensation of the Aegean Sea. As to our poetics now, we can say that we witness a more private vision: the poet turns almost solely to himself, to the examination of his or her personal history in order to find the source of poetic inspiration. Parallelly there is a search in terms of language and form. Κiki Dimoula - an established poet of an older generation - in her very recent book plays increasingly with language, D. Kapsalis returns to rhyming, while Haris Vlavianos, says: “Ίn poetry nothing is real except the exaggeration of the self”.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
The Victim and Her Plots: The Function of the Overpowering Victim in Muriel Spark's The Driver's Seat
Creators: name: Vara, Maria
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2001

description: To θύμα και οι δια-πλοκές της: η λειτουργία του επικυρίαρχου θύματος στο The Driver's Seat της Muriel Spark Μαρία Βάρα Η Θέση τον Οδηγού (The Driver's Seat, 1970) της Muriel Spark είναι μια αριστοτεχνικά δομημένη νουβέλα, η οποία επαναδιαπραγματεύεται με εξαιρετική οξυδέρκεια την κλασική τελεολογική γραμματική του αστυνομικού μυθιστορήματος, αν και έχει μόνο επιδερμικά συνδεθεί με αυτό από τις σύγχρονες κριτικές μελέτες. Τα παιχνίδια με το χρόνο της αφήγησης και η ανατροπή της ισορροπίας ανάμεσα σε θύτη, θύμα και ερευνητή της υπόθεσης (detective) μέσα στο κείμενο διαταράσσουν τη λανθάνουσα γραμμική λογική του αναγνώστη και τις κοινωνικές πρακτικές της κυρίαρχης ιδεολογίας. Το παρόν άρθρο εστιάζει στη σύζευξη της νουβέλας της Spark με τις αφηγηματικές εφευρέσεις του nouveau roman, όπου γίνεται χρήση της αυστηρής γεωμετρίας του αστυνομικού μυθιστορήματος με σκοπό να αποδομηθούν οι ερμηνευτικοί μηχανισμοί που καθιστούν τον detective υπερασπιστή και έμβλημα της κυρίαρχης ηθικής τάξης. Η θέση τον Οδηγού με τη Lise - μια εκκεντρική γυναίκα που έχοντας λεπτομερώς οργανώσει τη δολοφονία της, επιλέγει και καταδιώκει το δολοφόνο της - ως καταλύτη της αφήγησης, ασκεί επιπλέον έμμεση κριτική στις μελέτες της εγκληματολογίας στο ξεκίνημα της δεκαετίας του 1970, σχετικά με το μερίδιο ευθύνης που φέρει το θύμα μιας εγκληματικής πράξης. Σε ένα άλλο επίπεδο, ερευνάται η πρωτοποριακή λογική του κειμένου, που ενώ αρχικά απορρίφθηκε ως ακραίο και αντιφεμινιστικό, αποδείχθηκε πρωτοπόρο για την εποχή του, μια που σχετίζεται με τις φεμινιστικές θεωρίες τρίτης γενιάς.
description: Gramma: Journal of Theory and Criticism, Vol 9 (2001): TRAJECTORIES: New Greek Scholarship in Anglo-American Studies
OILAVIY MUHITNING IJTIMOIY-MA'NAVIY TARAQQIYOTGA TA'SIRI: NAZARIY VA AMALIY YONDASHUVLAR
Creators: name: Boymurodova, Zarnigor
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada tegishli nazariy asoslar va amaliy yondashuvlarni o‘rganish orqali oila muhitining shaxsning ijtimoiy-ma’naviy rivojlanishiga ta’siri o‘rganiladi. Oila ijtimoiy-ma’naviy qadriyatlarni shakllantirishda, shaxslararo munosabatlarni rivojlantirishda, axloqiy asoslarni shakllantirishda asosiy rol o‘ynaydi. Maqolada multidisipliner yondashuvdan foydalangan holda, oilaviy munosabatlar, madaniy kontekst va ijtimoiy-iqtisodiy omillar bolaning ijtimoiy xulq-atvori va ma'naviy dunyoqarashiga qanday hissa qo'shishini ta'kidlaydi. Ushbu maqolada oilaning ijobiy ta'sirini kuchaytirish va oxir-oqibat har tomonlama shaxsiy o'sishni qo'llab-quvvatlash bo'yicha amaliy tavsiyalar berilgan.
Existence, uniqueness and regularity of the solution of the time-fractional Fokker-Planck equation with general forcing
Creators: name: Le, Kim-Ngan
name: McLean, William
name: Stynes, Martin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R11

description: A time-fractional Fokker-Planck initial-boundary value problem is considered, with differential operator $u_t-\nabla\cdot(\partial_t^{1-α}κ_α\nabla u-\textbf{F}\partial_t^{1-α}u)$, where $0
description: 20 pages, no figures
Pseudo-trisections of four-manifolds with boundary
Creators: name: Fushida-Hardy, Shintaro
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K40

description: We introduce the concept of pseudo-trisections of smooth oriented compact 4-manifolds with boundary. The main feature of pseudo-trisections is that they have lower complexity than relative trisections for given 4-manifolds. We prove existence and uniqueness of pseudo-trisections, and further establish a one-to-one correspondence between pseudo-trisections and their diagrammatic representations. We next introduce the concept of pseudo-bridge trisections of neatly embedded surfaces in smooth oriented compact 4-manifolds. We develop a diagrammatic theory of pseudo-bridge trisections and provide examples of computations of invariants of neatly embedded surfaces in 4-manifolds using said diagrams.
description: 38 pages, 30 figures
Typhlodromus Scheuten 1857
Creators: name: Kreiter, Serge
name: Payet, Rose-My
name: Abo-Shnaf, Reham
name: Douin, Martial
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Typhlodromus

description: Genus Typhlodromus Scheuten
 Typhlodromus Scheuten 1857: 111.
description: Published as part of Kreiter, Serge, Payet, Rose-My, Abo-Shnaf, Reham & Douin, Martial, 2021, New Phytoseiidae (Acari: Mesostigmata) of Mascareignes and Comoros Archipelagos (Indian Ocean): one new record, three new species groups and description of six new species and of six unknown males, pp. 845-889 in Acarologia 61 (4) on page 880, DOI: 10.24349/Krky-e23s, http://zenodo.org/record/7159750
Coupling Staggered-Grid and MPFA Finite Volume Methods for Free Flow/Porous-Medium Flow Problems
Creators: name: Schneider, Martin
name: Weishaupt, Kilian
name: Gläser, Dennis
name: Boon, Wietse M.
name: Helmig, Rainer
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A discretization is proposed for models coupling free flow with anisotropic porous medium flow. Our approach employs a staggered grid finite volume method for the Navier-Stokes equations in the free flow subdomain and a MPFA finite volume method to solve Darcy flow in the porous medium. After appropriate spatial refinement in the free flow domain, the degrees of freedom are conveniently located to allow for a natural coupling of the two discretization schemes. In turn, we automatically obtain a more accurate description of the flow field surrounding the porous medium. Numerical experiments highlight the stability and applicability of the scheme in the presence of anisotropy and show good agreement with existing methods, verifying our approach.
Vanishing vortex creep at the transition from ordered to disordered vortex phases in Ba$_{0.64}$K$_{0.36}$Fe$_2$As$_2$
Creators: name: Liu, Yu-Hao
name: Xie, Wei
name: Wen, Hai-Hu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By measuring the dynamical and conventional magnetization relaxation of the Ba$_{0.64}$K$_{0.36}$Fe$_2$As$_2$ single crystals, we found strong second peak effect on the magnetization hysteresis loops. It is found that there is a kink of magnetization at a field between the valley and maximum magnetization. Interestingly, the magnetization relaxation rate has a deep minimum at the field with the kink, indicating a diminished vortex creep. The relaxation rate at this field is clearly smaller than the so-called universal lower limit of the relaxation rate characterized by ($S_0\approx \ Gi^{1/2}(T/T_\mathrm{c}$). This diminished vortex creep is associated with the origin of the SMP effect and attributed to the strongly hindered flux motion when experiencing the transition from the quasi-ordered to disordered vortex phases.
description: 5 figures
Postmodernism as a problematics of the suspension of difference: Robert Coover's "The Phantom of the Movie Palace"
Creators: name: Kokkinidou, Avgi
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2001

description: Ο μεταμοντερνισμός ως προβληματική της αναστολής της διαφορετικότητας: "The Phantom of the Movie Palace" του Robert Coover Αυγή Κοκκινίδου Κάθε λογοτεχνικό ρεύμα ορίζεται από τις μεταφορές που παράγει. Ο μεταμοντερνισμός επαναδιαπραγματεύεται τους όρους που συνθέτουν τη μεταφορική σχέση ανάμεσα στο «εγώ» και τον «άλλο». Εξαιτίας αυτής της επαναδιαπραγμάτευσης, η μεταμοντέρνα μυθοπλασία παράγει μια κοσμοαντίληψη που θα μπορούσε να χαρακτηριστεί ως ενδεικτική μόνο της εποχής κατά την οποία εμφανίστηκε, δηλαδή των τελευταίων δεκαετιών του εικοστού αιώνα. Είναι ήδη γνωστό ότι η μεταμοντέρνα μυθοπλασία υιοθετεί και αναμιγνύει στοιχεία από την αφηγηματική τεχνική διάφορων λογοτεχνικών ειδών και ρευμάτων. Κυρίαρχη θέση ανάμεσα σ' αυτά, για τις στρατηγικές που ανέπτυξε το μεταμοντέρνο μυθιστόρημα, έχει η λογοτεχνία του φανταστικού, η οποία προσδίδει στη σχέση με τον «άλλο» πάντα απειλητικές διαστάσεις. Στοιχεία του «φανταστικού» ως λογοτεχνικού είδους μπορεί κανείς να εντοπίσει εύκολα στο διήγημα του Robert Coover, "The Phantom of the Movie Palace". To διήγημα, όμως, του Coover αντιστρέφει τους όρους εκφοράς της βασικής επιθυμίας, που σύμφωνα με κάποιες θεωρητικές προσεγγίσεις στη λογοτεχνία του φανταστικού, χαρακτηρίζει τη σχέση ανάμεσα στο «εγώ» και τον «άλλο». Στη μεταμοντέρνα μυθοπλασία του Coover, ο «άλλος» δεν είναι παρά η εικονική, μετωνυμική ανάπλαση ενός «εγώ», έτσι ώστε να καθιστά ήδη ασαφείς τους όρους της διαφοροποίησής τους, όπως και το σημείο εκφοράς της ίδιας της επιθυμίας. Έτσι, εγείρει μια προβληματική της διαφορετικότητας και εκφράζει την υπαρξιακή αγωνία που προκύπτει από την εμπειρία της «υπό αναστολή» διαφορετικότητας.
description: Gramma: Journal of Theory and Criticism, Vol 9 (2001): TRAJECTORIES: New Greek Scholarship in Anglo-American Studies
title: Änderung der Zulassungsordnung für den Bachelorstudiengang Wirtschaftsingenieurwesen, Studienrichtung Bauingenieurwesen an der TU Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig. Fakultät 3
Year: 2008
Subjects: subject: Zulassungsordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 552
Additional file 1: of Childhood undernutrition in three disadvantaged East African Districts: a multinomial analysis
Creators: name: Agho, Kingsley
name: Blessing Akombi
name: Akhi Ferdous
name: Mbugua, Irene
name: Kamara, Joseph
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1: Percentage distribution of undernutrition in children aged 0-59 months by three East African Districts (N= 8,706). (DOCX 15 kb)
Probing the HI Kinematics of the LMC: Toward Interpreting QAL Observations of Protogalactic Velocity Fields
Creators: name: Prochaska, Jason X.
name: Ryan-Weber, Emma
name: Staveley-Smith, Lister
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the gas kinematics of the LMC revealed by the high spatial and velocity resolution HI data cube of the combined ATCA and Parkes telescope surveys. We adopt an approach designed to facilitate comparisons with quasar absorption line observations, in particular restricting our analysis to pointings with HI column density satisfying the damped Lya (DLA) criterion. We measure velocity widths for ~5000 random pointings to the LMC and find a median value of ~40 km/s which modestly exceeds the value predicted by differential rotation. This median is significantly lower than the median value observed for the metal-line profiles of high z DLA. Therefore, assuming
description: 7 pages, 4 color figures. Uses onecolfloat.sty. Accepted to PASP July 19, 2002
Until Death Tears Them Apart: Male Narration and Female Spectacle in Roman Polanski's Bitter Moon
Creators: name: Karagiannidou, Aneta
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2001

description: «Έως Ότου Τους Χωρίσει ο Θάνατος»: (ανδρική) αφήγηση και (γυναικείο) θέαμα στα Μαύρα Φεγγάρια του Έρωτα του Roman Polanski Ανέτα Καραγιαννίδου Χρησιμοποιώντας ως σημείο αναφοράς μου την ταινία του Roman Polanski Τα Μαύρα Φεγγάρια του Έρωτα (Bitter Moon), σκοπεύω να σκιαγραφήσω την κινηματογραφική σχέση ανάμεσα στην αφήγηση (στόρι) και το θέαμα (εικόνες) μέσα από το πατριαρχικό μοτίβο της ερωτικής σχέσης ανάμεσα σ’ έναν άντρα και μια γυναίκα. Χρησιμοποιώντας λακανική θεωρία και το «στάδιο του καθρέφτη» ως την πρωταρχική στιγμή κατά την οποία γεννιέται η αφηγηματική φωνή μιας τέλειας, ολοκληρωμένης οντότητας, θα προσπαθήσω μέσα από τη σκιαγράφηση των ετεροφυλόφιλων σχέσεων της ταινίας να παρουσιάσω την ανδρική επιθυμία για έναν ολοκληρωμένο αφηγηματικό κόσμο μέσα στον οποίο η γυναίκα αποτελεί την εικόνα που στηρίζει την φαντασιακή έννοια της ολοκλήρωσης και την κάνει μέρος της συμβολικής πραγματικότητας. Μέσα σ' έναν συμβολικό κόσμο όπου ο άνδρας είναι ο αυθαίρετος κάτοχος του φαλλικού συμβόλου εξουσίας, το οποίο εξίσου αυθαίρετα ορίστηκε να μετουσιώνει η γυναίκα, το σενάριο της απόλυτης, ολοκληρωμένης ύπαρξης αποκτά συμβολική διάσταση μόνο μέσα από την ετεροφυλόφιλη συνένωση. Και μια ολοκληρωμένη ανδρική ύπαρξη δεν μπορεί παρά ν' αφηγείται ολοκληρωμένες ιστορίες. Τι γίνεται όμως όταν η γυναίκα και η εικόνα αναπόφευκτα προδώσουν τον αδύνατο ρόλο που τους επιβλήθηκε και αποκαλυφθεί το κενό που μεταστρέφει την πραγματικότητα της ολοκλήρωσης σ' ένα φαντασιακό σενάριο αδύνατο να υλοποιηθεί στη σφαίρα της συμβολικής πραγματικότητας;
description: Gramma: Journal of Theory and Criticism, Vol 9 (2001): TRAJECTORIES: New Greek Scholarship in Anglo-American Studies
Integration of Einstein's Equations in the Weak Field Domain Using the "Einstein" Gauge
Creators: name: Hitzer, E.
name: Dehnen, H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a new alternative gauge for the Einstein equations instead of the de Donder gauge, which allows in the limit of weak fields a straightforward integration of these equations. The Newtonian potential plays a new interesting role in this framework. The calculations are demonstrated explicitely for 2 simple astrophysical models.
description: 14 pages, no figures, plain LATEX, references updated
Fight Club Takes a Beating: Masculinity, Masochism and the Politics of Disavowal
Creators: name: Rehling, Nicola
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2001

description: To Fight Club δέχεται κτύπημα: αρρενωπότητα, μαζοχισμός και η πολιτική της αποκήρυξης Nicola Rehling Το άρθρο αυτό εξετάζει τη σχέση αρρενωπότητας και μαζοχισμού στην ταινία Fight Club του David Fincher. Μολονότι κάποιοι κριτικοί έχουν υποστηρίξει ότι ο ανδρικός μαζοχισμός υπονομεύει τη φαλλική ανδρική υποκειμενικότητα, καθώς και το ίδιο το πατριαρχικό σύστημα, θεωρώ ότι, εάν η κινηματογράφηση του μαζοχισμού στο Fight Club τοποθετηθεί σε ένα ιστορικό πλαίσιο, όχι μόνο δίνει στην ταινία μια θέση στην συζήτηση περί διωγμού του λευκού άνδρα που ήλθε στο προσκήνιο στις Ηνωμένες Πολιτείες στη δεκαετία του '90, αλλά παρέχει επίσης μια στρατηγική για τη φαλλική ανάκαμψη του λευκού άνδρα. Με τον ίδιο τρόπο που ο μαζοχιστής μπορεί να αποκηρύξει την κυριαρχία που ενυπάρχει στην ανάληψη της θέσης του θύματος, το Fight Club δομείται σε πολλά επίπεδα μέσω της αποκήρυξης, η οποία είναι η αποκήρυξη του λευκού ετερόφυλου ανδρικού προνομίου, η αποκήρυξη της έσω- και έξω-διηγητικής αυτοερωτικής επιθυμίας (η οποία επιτυγχάνεται μέσω ενός μαζοχιστικού ακρωτηριασμού του ανδρικού σώματος), καθώς και η αποκήρυξη της ίδιας της της σοβαρότητας εν μέσω της μετα-μοντέρνας «σπιρτάδας».
description: Gramma: Journal of Theory and Criticism, Vol 9 (2001): TRAJECTORIES: New Greek Scholarship in Anglo-American Studies
Quantum Phase Transition in Skyrmion Lattices
Creators: name: Nazarov, Yuli V.
name: Khaetskii, A. V.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the ground state of 2D electron gas in Quantum Hall regime at the filling factor slightly deviating from unity, that can be viewed as a sparse lattice of skyrmions. We have found that in the low density limit skyrmions are bound in pairs, those forming the actual lattice. We have shown that at further density increase the lattice undergoes a quantum phase transition, an analogue of superconducting phase transition in Josephson junction arrays.
description: 4 pages REVTEX, 3 Postscript figures
"Modifying" the Female Body: women's bodies and contemporary fitness culture
Creators: name: Spiropoulou, Angeliki
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2001

description: «Τροποποιώντας» το σώμα της θηλυκότητας: το γυναικείο σώμα και η σύγχρονη κουλτούρα της γυμναστικής Αγγελική Σπυροπούλου Εξετάζονται οι πρακτικές και οι αναπαραστάσεις που σχετίζονται με την παραγωγή μιας επιθυμητής μορφής σώματος σήμερα, που λαμβάνει χώρα κυρίως στο πλαίσιο μιας αυξανόμενα «διεθνοποιημένης» κουλτούρας των γυμναστηρίων. Πιο συγκεκριμένα, τονίζεται η έννοια της «τροποποίησης» (modification) του σώματος μέσω της γυμναστικής, για να ευθυγραμμιστεί με πρότυπα που επιβάλλει η επικρατούσα μόδα (mode). Ο προβληματισμός αυτός αφορά ιδιαίτερα το γυναικείο σώμα, το οποίο, τόσο από ιστορικής όσο και ψυχαναλυτικής άποψης, υπόκειται περισσότερο σε κανονιστικά πρότυπα που προβάλλει ο εκάστοτε πολιτισμικοκοινωνικός σχηματισμός, ακριβώς λόγω της παραδοσιακής ταύτισης της γυναίκας με το σώμα (ως συνήθη μεταφορά της «φύσης») και του ετεροπροσδιορισμού της θηλυκότητας ως έλλειψη. Τέλος, καταδεικνύεται πως η σύγχρονη κουλτούρα που έχει αναπτυχθεί γύρω από το πρότυπο του γυμνασμένου (γυναικείου) σώματος είναι συνυφασμένη με το ισχύον οικονομικό σύστημα και εξυπηρετεί ταυτόχρονα τον πολιτισμικό επεκτατισμό των κυρίαρχων δυτικών χωρών και την (αναπαραγωγή των παραδεδομένων σχέσεων κυριαρχίας μεταξύ των δύο φύλων, μέσω της σύνδεσής της με τις ηδονές της κατανάλωσης, που πλέον αποτελεί επιταγή, διαγράφοντας το κύριο πεδίο συγκρότησης της ταυτότητας σε αυτήν την ύστερη φάση της νεωτερικότητας. Κατά προέκταση, επισημαίνονται οι δυσκολίες κάθε προστάγματος χειραφέτησης που στηρίζεται σε μια εξ ορισμού θεώρηση του γυναικείου σώματος ως μέσο υπονόμευσης των υφισταμένων σχέσεων εξουσίας ανεξάρτητα από τους τρόπους (modes) μέσω των οποίων αυτό διαμορφώνεται ιστορικά.
description: Gramma: Journal of Theory and Criticism, Vol 9 (2001): TRAJECTORIES: New Greek Scholarship in Anglo-American Studies
Carbon Monoxide in the Type Ic SN 2000ew
Creators: name: Gerardy, Christopher L.
name: Fesen, Robert A.
name: Nomoto, Ken'ichi
name: Maeda, Keiichi
name: Hoeflich, Peter
name: Wheeler, J. Craig
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present K-band (1.9 -- 2.5 micron) spectra of the Type Ic SN 2000ew observed with IRCS on the Subaru Telescope. These data show the first detection of carbon monoxide (CO) emission in a Type Ic supernova. The detection of CO in SN 2000ew provides further evidence that molecule formation may be a common occurrence in core-collapse supernova ejecta. The spectrum also contains narrow emission lines of [Fe II] and He I probably from dense clumps of hydrogen-poor circumstellar gas surrounding SN 2000ew. Our spectrum of SN 2000ew shows no trace of an unidentified feature seen near 2.26 micron, just blueward of the CO emission, in the spectrum of SN 1987A and we discuss proposed detections of this feature in other Type II supernovae.
description: 7 Pages, 3 Figures Submitted to PASJ for Subaru Special Issue
title: Evaluating website security: a study on content security policy implementation
Creators: name: Fernandes de Oliveira, Isabella
name: Ren, Mengxia
Publisher: name: Colorado School of Mines. Arthur Lakes Library
Year: 2024

description: Content Security Policies (CSPs) are vital defenses against cross-site scripting (XSS) and unauthorized web resource manipulation. This study investigates CSP implementation across the top 100 websites listed in TRANCO, focusing on resilience to external manipulation. Our analysis reveals that over 50% of domains lack adequate protection against XSS attacks, despite CSP implementation. Vulnerabilities include the misuse of 'unsafe-inline' directives and reliance on white-listing-based policies over nonce-based alternatives. These findings highlight the need for a comprehensive CSP approach, prioritizing script and web control. Strategies to enhance website security, such as stricter CSP configurations, are discussed, emphasizing nonce-based strategies and comprehensive directive coverage.
Near-field radiative heat transfer between shifted graphene gratings
Creators: name: Luo, Minggang
name: Jeyar, Youssef
name: Guizal, Brahim
name: Antezza, Mauro
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We examine the near-field radiative heat transfer between finite-thickness planar fused silica slabs covered with graphene gratings, through the utilization of the Fourier modal method augmented with local basis functions (FMM-LBF), with focus on the lateral shift effect. To do so, we propose and validate a minor modification of the FMM-LBF theory to account for the lateral shift. This approach goes far beyond the effective medium approximation because this latter cannot account for the lateral shift. We show that the heat flux can exhibit significant oscillations with the lateral shift and, at short separation, it can experience up to a 60%-70% reduction compared to the aligned case. Such a lateral shift effect is found to be sensitive to the geometric factor $d/D$ (separation distance to grating period ratio). When $d/D>1$ (realized through large separation or small grating period), the two graphene gratings see each other as an effective whole rather than in detail, and thus the lateral shift effect on heat transfer becomes less important. Therefore, we can clearly distinguish two asymptotic regimes for radiative heat transfer: the LSE (Lateral Shift Effect) regime, where a significant lateral shift effect is observed, and the non-LSE regime, where this effect is negligible. Furthermore, regardless of the lateral shift, the radiative heat flux shows a non-monotonic dependence on the graphene chemical potential. That is, we can get an optimal radiative heat flux (peaking at about 0.3eV chemical potential) by $\textit{in situ}$ modulating the chemical potential. This work has the potential to unveil new avenues for harnessing the lateral shift effect on radiative heat transfer in graphene-based nanodevices.
description: 14 pages, 14 figures
Generalized r-Modes of the Maclaurin Spheroids
Creators: name: Lindblom, Lee
name: Ipser, James R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Analytical solutions are presented for a class of generalized r-modes of rigidly rotating uniform density stars---the Maclaurin spheroids---with arbitrary values of the angular velocity. Our analysis is based on the work of Bryan; however, we derive the solutions using slightly different coordinates that give purely real representations of the r-modes. The class of generalized r-modes is much larger than the previously studied `classical' r-modes. In particular, for each l and m we find l-m (or l-1 for the m=0 case) distinct r-modes. Many of these previously unstudied r-modes (about 30% of those examined) are subject to a secular instability driven by gravitational radiation. The eigenfunctions of the `classical' r-modes, the l=m+1 case here, are found to have particularly simple analytical representations. These r-modes provide an interesting mathematical example of solutions to a hyperbolic eigenvalue problem.
description: 12 pages, 3 figures; minor changes and additions as will appear in the version to be published in Physical Review D, January 1999
Morphological Networks for Image De-raining
Creators: name: Mondal, Ranjan
name: Purkait, Pulak
name: Santra, Sanchayan
name: Chanda, Bhabatosh
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Mathematical morphological methods have successfully been applied to filter out (emphasize or remove) different structures of an image. However, it is argued that these methods could be suitable for the task only if the type and order of the filter(s) as well as the shape and size of operator kernel are designed properly. Thus the existing filtering operators are problem (instance) specific and are designed by the domain experts. In this work we propose a morphological network that emulates classical morphological filtering consisting of a series of erosion and dilation operators with trainable structuring elements. We evaluate the proposed network for image de-raining task where the SSIM and mean absolute error (MAE) loss corresponding to predicted and ground-truth clean image is back-propagated through the network to train the structuring elements. We observe that a single morphological network can de-rain an image with any arbitrary shaped rain-droplets and achieves similar performance with the contemporary CNNs for this task with a fraction of trainable parameters (network size). The proposed morphological network(MorphoN) is not designed specifically for de-raining and can readily be applied to similar filtering / noise cleaning tasks. The source code can be found here https://github.com/ranjanZ/2D-Morphological-Network
description: Mathematical Morphology \and Optimization \and Morphological Network \and Image Filtering
title: Einstellung des Diplomstudiengangs Informatik und Einführung des Bachelorstudiengangs Informatik an der Carl-Friedrich-Gauß-Fakultät für Mathematik und Informatik
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fakultät 1
Year: 2005
Subjects: subject: Einführung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 372
title: Ambulantes Praktisches Jahr im Masterplan Medizinstudium 2020 als Herausforderung und Chance für alle Fächer mit ambulanter Patientenversorgung – eine interdisziplinäre Diskussion
Creators: name: Demmer, Iris
name: Schmalstieg-Bahr, Katharina
name: Borgmann, Susanne
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Problemstellung: Das ambulante Wahlfach Allgemeinmedizin im Praktischen Jahr (PJ) wird seit ca. einem Jahrzehnt in hausärztlichen Lehrpraxen durchgeführt und von Studierenden hinsichtlich ihres Lernfortschrittes und der Betreuung durch die Lehrärzte positiv bewertet [ref:1],[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsame Jahrestagung der Gesellschaft für Medizinische Ausbildung (GMA), des Arbeitskreises zur Weiterentwicklung der Lehre in der Zahnmedizin (AKWLZ) und der Chirurgischen Arbeitsgemeinschaft Lehre (CAL)
On the discrete Dirac spectrum of general-relativistic hydrogenic ions with anomalous magnetic moment
Creators: name: Kapengut, Elie
name: Kiessling, Michael K. -H.
name: Ling, Eric
name: Tahvildar-Zadeh, A. Shadi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Dynamical Systems (math.DS)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Reissner-Weyl-Nordström (RWN) spacetime of a point nucleus features a naked singularity for the empirically known nuclear charges $Ze$ and masses $M = A(Z,N)m_{\mathrm{p}}$, where $m_{\mathrm{p}}$ is the proton mass and $A(Z,N)\approx Z+N$ the atomic mass number, with $Z$ the number of protons and $N$ the number of neutrons in the nucleus. The Dirac Hamiltonian for a test electron with mass $m_{\mathrm{e}}$, charge $-e$, and anomalous magnetic moment $μ_a (\approx - \frac{1}{4π}\frac{e^3}{m_{\mathrm{e}} c^2})$ in the electrostatic RWN spacetime of such a 'naked point nucleus' is known to be essentially self-adjoint, with a spectrum that consists of the union of the essential spectrum $(-\infty, m_{\mathrm{e}} c^2]\cup[m_{\mathrm{e}} c^2, \infty)$ and a discrete spectrum of infinitely many eigenvalues in the gap $(-m_{\mathrm{e}} c^2,m_{\mathrm{e}} c^2)$, having $m_{\mathrm{e}} c^2$ as accumulation point. In this paper the discrete spectrum is characterized in detail for the first time, for all $Z\leq 45$ and $A$ that cover all known isotopes. The eigenvalues are mapped one-to-one to those of the traditional Dirac Hydrogen spectrum. Numerical evaluations that go beyond $Z=45$ into the realm of not-yet-produced hydrogenic ions are presented, too. A list of challenging open problems concludes this publication.
description: 40 pages, 1 figure, submitted for publication