cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Second-order integrals for systems in $E_2$ involving spin
Creators: name: Yurdusen, Ismet
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In two-dimensional Euclidean plane, existence of second-order integrals of motion is investigated for integrable Hamiltonian systems involving spin (\emph{e.g.,} those systems describing interaction between two particles with spin 0 and spin 1/2) and it has been shown that no nontrivial second-order integrals of motion exist for such systems.
description: 11 pages
Ψυχική υγεία και γυναικολογική υγεία
Creators: name: Τουρτουρίδου, Μαρία Σπυρίδων
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Έμμηνος κύκλος
Ψυχική υγεία
Γυναικολογική υγεία
Menstrual cycle
Mental health
Women's health

description: Σκοπός της παρούσας διατριβής είναι η διερεύνηση της πολύπλοκης σχέσης μεταξύ της ψυχικής υγείας και του έμμηνου κύκλου μέσω μιας ποσοτικής έρευνας με τη χρήση ειδικά σχεδιασμένου ερωτηματολογίου. Η μελέτη αποσκοπεί στη διαλεύκανση του ψυχολογικού αντίκτυπου της έμμηνου ρύσης στην ψυχική ευημερία, λαμβάνοντας υπόψη διάφορους βιολογικούς, ψυχολογικούς και κοινωνικούς παράγοντες που δρουν κατά τη διάρκεια αυτού του κύκλου. Παρουσιάζεται μια ανασκόπηση της βιβλιογραφίας, η οποία περιλαμβάνει ιστορικές προοπτικές, βιολογικές επιδράσεις και ψυχολογικές/συναισθηματικές επιπτώσεις της έμμηνου ρύσης στην ψυχική υγεία, επισημαίνοντας τα κενά και τις αντιφάσεις στην υπάρχουσα έρευνα. Η μεθοδολογία της έρευνας αναλύει τον σχεδιασμό, την ανάπτυξη και την επικύρωση ενός ερωτηματολογίου, καθώς και τεχνικές δειγματοληψίας και ηθικές σκέψεις για τη συλλογή δεδομένων. Τα ευρήματα από τη μελέτη που βασίζεται σε ερωτηματολόγιο παρέχουν εισηγήσεις σχετικά με τα δημογραφικά χαρακτηριστικά των συμμετεχόντων και μια ποσοτική ανάλυση των συλλεγέντων δεδομένων, ρίχνοντας φως στις συσχετίσεις μεταξύ δεικτών ψυχικής υγείας και φάσεων του έμμηνου κύκλου. Τέλος, η συζήτηση και η ανάλυση αυτών των ευρημάτων περιλαμβάνουν την ερμηνεία των ποσοτικών αποτελεσμάτων, τη σύγκρισή τους με την υπάρχουσα βιβλιογραφία, τις συνέπειες για παρεμβάσεις στην ψυχική υγεία, τους περιορισμούς της μελέτης και τις προτάσεις για μελλοντικές κατευθύνσεις έρευνας.
description: This research delves into the intricate relationship between mental health and menstrual health, employing a multifaceted approach through the utilization of questionnaires and an extensive literature review. The study encompasses an in-depth examination of societal, historical, and mythological perspectives surrounding menstruation, aiming to unravel the cultural nuances and stigmas associated with this natural physiological process. Furthermore, the research investigates the role of hormones in elucidating mood swings and various psychiatric parameters during the menstrual cycle.The questionnaire aspect of the study involves gathering firsthand insights into the subjective experiences and perceptions of individuals regarding the intersection of mental and menstrual health. This primary data is complemented by a thorough literature review that synthesizes existing knowledge on the social constructions of menstruation and the psychological implications of hormonal fluctuations.The exploration of social, historical, and mythological viewpoints contributes to a holistic understanding of the contextual factors shaping attitudes towards menstruation. Simultaneously, the elucidation of hormonal influences on mood swings and psychiatric parameters provides a scientific foundation for comprehending the physiological underpinnings of mental well-being throughout the menstrual cycle.
A Classical Realizability Model arising from a Stable Model of Untyped Lambda Calculus
Creators: name: Streicher, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Category Theory (math.CT)
subject: Logic (math.LO)
subject: FOS: Mathematics

description: We study a classical realizability model (in the sense of J.-L. Krivine) arising from a model of untyped lambda calculus in coherence spaces. We show that this model validates countable choice using bar recursion and bar induction.
Ice-shelf vibrations modeled by a full 3-D elastic model (Version#5)
Creators: name: Konovalov, Yuri V.
Publisher: name: Zenodo
Year: 2023
Subjects: ice shelf vibrations, ice shelf modeling, elastic models, finite-volume models

description: This version contains a model (description and code) developed for modeling ice shelf vibrations and based on the finite volume method applied to discretize the momentum equations and the wave equation (for under-ice seawater in a cavity).
Singlet-triplet excitations and long range entanglement in the spin-orbital liquid candidate FeSc2S4
Creators: name: Laurita, N. J.
name: Deisenhofer, J.
name: Pan, LiDong
name: Morris, C. M.
name: Schmidt, M.
name: Johnsson, M.
name: Tsurkan, V.
name: Loidl, A.
name: Armitage, N. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Theoretical models of the spin-orbital liquid (SOL) FeSc$_2$S$_4$ have predicted it to be in close proximity to a quantum critical point separating a spin-orbital liquid phase from a long-range ordered magnetic phase. Here, we examine the magnetic excitations of FeSc$_2$S$_4$ through time-domain terahertz spectroscopy under an applied magnetic field. At low temperatures an excitation emerges that we attribute to a singlet-triplet excitation from the SOL ground state. A three-fold splitting of this excitation is observed as a function of applied magnetic field. As singlet-triplet excitations are forbidden in inversion symmetric pure spin systems, our results demonstrate the non-trivial character of the entangled spin-orbital singlet ground state. Using experimentally obtained parameters we compare to existing theoretical models to determine FeSc$_2$S$_4$'s proximity to the quantum critical point. In the context of these models, we estimate that the characteristic length of the singlet correlations to be $ξ/ (\textbf{a}/2) \approx 8.2$ (where $\textbf{a}/2$ is the nearest neighbor lattice constant) which establishes FeSc$_2$S$_4$ as a SOL with long-range entanglement.
description: 5 Pages, 4 Figures
Beyond heat baths II: Framework for generalized thermodynamic resource theories
Creators: name: Halpern, Nicole Yunger
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Thermodynamics, which describes vast systems, has been reconciled with small scales, relevant to single-molecule experiments, in resource theories. Resource theories have been used to model exchanges of energy and information. Recently, particle exchanges were modeled; and an umbrella family of thermodynamic resource theories was proposed to model diverse baths, interactions, and free energies. This paper motivates and details the family's structure and prospective applications. How to model electrochemical, gravitational, magnetic, and other thermodynamic systems is explained. Szilard's engine and Landauer's Principle are generalized, as resourcefulness is shown to be convertible not only between information and gravitational energy, but also among diverse degrees of freedom. Extensive variables are associated with quantum operators that might fail to commute, introducing extra nonclassicality into thermodynamic resource theories. An early version of this paper partially motivated the later development of noncommutative thermalization. This generalization expands the theories' potential for modeling realistic systems with which small-scale statistical mechanics might be tested experimentally.
description: Minor updates (contributions clarified, material restored from v1, references updated). 18 pages (including 2 figures) + appendices
Parabolic weighted norm inequalities and partial differential equations
Creators: name: Kinnunen, Juha
name: Saari, Olli
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B25, 42B37, 35K55

description: We investigate parabolic Muckenhoupt weights and functions of bounded mean oscillation (BMO) related to nonlinear parabolic partial differential equations. The main result gives a full characterization of weak and strong type weighted norm inequalities for parabolic forward in time maximal operators. In addition, we give a Jones type factorization result for the parabolic Muckenhoupt weights and a Coifman-Rochberg type characterization of the parabolic BMO from Moser's seminal paper through parabolic Muckenhoupt weights and maximal functions.
description: 29 pages. To appear in Anal. PDE. Referee's corrections incorporated. Small change in the title
title: Literary Afterlives
title: Archives, Literature Museums, and the Visibility of Texts
titleType: Subtitle
Creators: name: Costabile-Heming, Carole Anne
Publisher: name: Graduate School Practices of Literature
Year: 2020
Subjects: subject: 800 Literature (Belles-lettres) and rhetoric

description: Das Leben von Schriftsteller*innen ist in vielerlei Hinsicht ein unsicheres, denn z. B. die finanzielle Sicherheit hängt maßgeblich vom Erfolg beim breiten Publikum ab. Diesen bilden Bestsellerlisten ab; sie geben Auskunft darüber, welche Bücher sich gut verkaufen lassen, aber sagen noch nichts aus über die Qualität der Literatur. Bücher, die darüber hinaus im kulturellen Bewusstsein bestehen, zählt man gemeinhin zum literarischen Kanon, der nicht unumstritten ist. Der vorliegende Essay geht der Frage nach, in welcher Beziehung Literaturarchive und literarische Museen wie das Deutsche Literaturarchiv und das Literaturmuseum der Moderne in Marbach zu einander stehen und wie sie zur Sichtbarkeit von Autor*innen und Texten beitragen können. Die Ausstellungspraktiken und -entscheidungen der Museen reagieren auf den literarischen Kanon, bestimmen ihn mit und fordern ihn heraus. Dabei werden auch neue Wege der Präsentation eingeschlagen, die Literatur noch einmal materiell aufbereiten und erfahrbar machen. Einerseits dockt der Essay damit an aktuelle Debatten zum literarischen Kanon an, andererseits soll aufgezeigt werden, wie Literaturarchive und -museen den bestehenden Kanon für neue Stimmen und Texte öffnen können.
Compact Complex Manifolds with Small Gauduchon Cone
Creators: name: Popovici, Dan
name: Ugarte, Luis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: This paper is intended as the first step of a programme aiming to prove in the long run the long-conjectured closedness under holomorphic deformations of compact complex manifolds that are bimeromorphically equivalent to compact Kähler manifolds, known as Fujiki {\it class} ${\cal C}$ manifolds. Our main idea is to explore the link between the {\it class} ${\cal C}$ property and the closed positive currents of bidegree $(1,\,1)$ that the manifold supports, a fact leading to the study of semi-continuity properties under deformations of the complex structure of the dual cones of cohomology classes of such currents and of Gauduchon metrics. Our main finding is a new class of compact complex, possibly non-Kähler, manifolds defined by the condition that every Gauduchon metric be strongly Gauduchon (sG), or equivalently that the Gauduchon cone be small in a certain sense. We term them sGG manifolds and find numerical characterisations of them in terms of certain relations between various cohomology theories (De Rham, Dolbeault, Bott-Chern, Aeppli). We also produce several concrete examples of nilmanifolds demonstrating the differences between the sGG class and well-established classes of complex manifolds. We conclude that sGG manifolds enjoy good stability properties under deformations and modifications.
description: The title has been changed, the abstract and the introduction have been rewritten. To appear in the Proceedings of the London Mathematical Society
title: E. Hans Mahler (1896-1963)
title: Zur Erinnerung an Emil Hans Mahler, 7. Dezember 1896 - 2. September 1963 : Gedenkfeier anlässlich der Bestattung Mittwoch, den 4. September 1963 im Fraumünster in Zürich
titleType: Subtitle
Creators: name: Brenk, Erich
name: Kaufmann, Peter
Publisher: name: [Gedenkschriften-Verlag]
Year: 1963
Subjects: subject: 330 Wirtschaft
subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Mahler, E. Hans
subject: Thalwil
subject: Küsnacht (Kanton Zürich)
subject: Magazine zum Globus

description: Enth.: Abdankungssprache von Pfarrer Erich Brenk, Zollikon ; Ansprache von Peter Kaufmann, Generaldirektor der Magazine zum Globus ; Besinnungsworte von Pfarrer Erich Brenk
Representations of categories of G-maps
Creators: name: Sam, Steven V
name: Snowden, Andrew
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 05A15, 13P10, 16P40, 18A25, 68Q70

description: We study representations of wreath product analogues of categories of finite sets. This includes the category of finite sets and injections (studied by Church, Ellenberg, and Farb) and the opposite of the category of finite sets and surjections (studied by the authors in previous work). We prove noetherian properties for the injective version when the group in question is polycyclic-by-finite and use it to deduce general twisted homological stability results for such wreath products and indicate some applications to representation stability. We introduce a new class of formal languages (quasi-ordered languages) and use them to deduce strong rationality properties of Hilbert series of representations for the surjective version when the group is finite.
description: 27 pages, split off from arXiv:1409.1670v1; v2: added Section 5.2 on wreath product version of Murnaghan's stability theorem; v3: significant rewrite; v4: corrected some proofs
iHelp: Conceptual model and reference architecture II
Creators: name: Melillo, Fabio
name: Pucci, Laura
name: Azqueta, Ainhoa
name: Ramiro, Alejandro
name: Kranas, Pavlos
name: Kirova, Diana
name: Manias, George
name: Giorgos Giotis
name: Akker, Harm Op Den
name: Filipov, Krasimir
name: Perales, Oscar Garcia
name: Rashid, Usman
Publisher: name: Zenodo
Year: 2022
Subjects: iHelp: Conceptual model and reference architecture II
iHelp
Conceptual model
reference architecture
pancreatic cancer

description: iHelp aims to early detect and mitigate the risks associated with Pancreatic Cancer applying advanced Artificial Intelligence (AI)-based techniques to support the actors of the system. Those techniques are performed on historic data of cancer patients gathered from existing cohorts and biobanks. The models developed through the AI-based learning techniques will be useful to identify the risk earlier, and to elaborate a mitigation plan.
 To this end, iHelp will use and extend the paradigm of Holistic Health Records (HHR) (K., A., B., + 17), in order to aggregate and re-use data needed by the Artificial Intelligence for developing their models. Several different sources will feed the common shared informative base, and for achieving this goal, a framework for the data ingestion will be provided for the pre-elaboration of different data in order to let it flow towards the shared data model.
 The purpose of this deliverable is to provide the consortium with a common high-level view about the whole solution. The details of each software artefact are delegated to the respective leader and will be described in the related deliverables.
 During the period from M9 to M18, the consortium had several virtual and hybrid meetings to collect information and to agree about a common architecture. After the first released architecture in M8, thanks to the improved knowledge of the technical partners, and the details provided, some refinements were made.
 The common agreement was reached about the general view, the platform will be constituted by containerised services, both from the data ingestion and the data analysis, with slight differences explained in this document.
 The input of this deliverable was the D2.3 (“State of the art and Requirements Analysis III”) (M., A., C., + 22), that was analysed, and from which the needed components and interactions are identified and updated accordingly during this period.
 This deliverable is being released at M18 of the project, and it will be useful for the D2.7 (“Functional and Non-Functional specifications II”) for defining its purpose, and to all the technical partners as reference architecture for the whole iHelp solution.
 This is the final release of the architecture overview document for the iHelp project.
The cohomological Hall algebra of a preprojective algebra
Creators: name: Yang, Yaping
name: Zhao, Gufang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We introduce for each quiver $Q$ and each algebraic oriented cohomology theory $A$, the cohomological Hall algebra (CoHA) of $Q$, as the $A$-homology of the moduli of representations of the preprojective algebra of $Q$. This generalizes the $K$-theoretic Hall algebra of commuting varieties defined by Schiffmann-Vasserot. When $A$ is the Morava $K$-theory, we show evidence that this algebra is a candidate for Lusztig's reformulated conjecture on modular representations of algebraic groups. We construct an action of the preprojective CoHA on the $A$-homology of Nakajima quiver varieties. We compare this with the action of the Borel subalgebra of Yangian when $A$ is the intersection theory. We also give a shuffle algebra description of this CoHA in terms of the underlying formal group law of $A$. As applications, we obtain a shuffle description of the Yangian.
description: V6: 44 pages; section 6 added; errors in section 8 corrected; minor revisions throughout; final version
title: Efficient rational filter-based interior eigensolvers
Creators: name: Huber, Sarah
Publisher: name: Bergische Universität Wuppertal
Year: 2021

description: This thesis is concerned with improving and expanding projection based methods for Hermitian interior eigenvalue problems. The focus is on methods of this type utilizing a rational function based filtering approach. We outline various strategies and novel variations to improve the efficacy of these methods and their suitability for solving large sparse eigenvalue problems. The potential for improvement is shown in numerical experiments.
Non-myopic learning in repeated stochastic games
Creators: name: Crandall, Jacob W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In repeated stochastic games (RSGs), an agent must quickly adapt to the behavior of previously unknown associates, who may themselves be learning. This machine-learning problem is particularly challenging due, in part, to the presence of multiple (even infinite) equilibria and inherently large strategy spaces. In this paper, we introduce a method to reduce the strategy space of two-player general-sum RSGs to a handful of expert strategies. This process, called Mega, effectually reduces an RSG to a bandit problem. We show that the resulting strategy space preserves several important properties of the original RSG, thus enabling a learner to produce robust strategies within a reasonably small number of interactions. To better establish strengths and weaknesses of this approach, we empirically evaluate the resulting learning system against other algorithms in three different RSGs.
Electronic structure, metamagnetism and thermopower of LaSiFe$_{12}$ and interstitially doped LaSiFe$_{12}$
Creators: name: Gercsi, Z.
name: Fuller, N.
name: Sandeman, K. G.
name: Fujita, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a systematic investigation of the effect of H, B, C, and N interstitials on the electronic, lattice and magnetic properties of La(Fe,Si)$_{13}$ using density functional theory. The parent LaSiFe$_{12}$ alloy has a shallow, double-well free energy function that is the basis of itinerant metamagnetism. On increasing the dopant concentration, the resulting lattice expansion causes an initial increase in magnetisation for all interstitials that is only maintained at higher levels of doping in the case of hydrogen. Strong s-p band hybridisation occurs at high B,C and N concentrations. We thus find that the electronic effects of hydrogen doping are much less pronounced than those of other interstitials, and result in the double-well structure of the free energy function being least sensitive to the amount of hydrogen. This microscopic picture accounts for the vanishing first order nature of the transition by B,C, and N dopants as observed experimentally. We use our calculated electronic density of states for LaSiFe$_{12}$ and the hydrogenated alloy to infer changes in magneto-elastic coupling and in phonon entropy on heating through $T_C$ by calculating the fermionic entropy due to the itinerant electrons. Lastly, we predict the electron thermopower in a spin-mixing, high temperature limit and compare our findings to recent literature data.
description: 18 pages, 6 figures, this version to appear in Journal of Physics D: Applied Physics (Special Issue on Caloric materials)
On Ideal Lattices, Gröbner Bases and Generalized Hash Functions
Creators: name: Francis, Maria
name: Dukkipati, Ambedkar
Publisher: name: arXiv
Year: 2014
Subjects: subject: Symbolic Computation (cs.SC)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In this paper, we draw connections between ideal lattices and multivariate polynomial rings over integers using Gröbner bases. Ideal lattices are ideals in the residue class ring, $\mathbb{Z}[x]/\langle f \rangle$ (here $f$ is a monic polynomial), and cryptographic primitives have been built based on these objects. As ideal lattices in the univariate case are generalizations of cyclic lattices, we introduce the notion of multivariate cyclic lattices and show that multivariate ideal lattices are indeed a generalization of them. Based on multivariate ideal lattices, we establish the existence of collision resistant hash functions using Gröbner basis techniques. For the construction of hash functions, we define a worst case problem, shortest substitution problem w.r.t. an ideal in $\mathbb{Z}[x_1,\ldots, x_n]$, and establish hardness results using functional fields.
description: arXiv admin note: text overlap with arXiv:1409.7788
Contour integration underlies fundamental Bernoulli number recurrence
Creators: name: Grzesik, J. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: One solution to a relatively recent American Mathematical Monthly problem [6], requesting the evaluation of a real definite integral, could be couched in terms of a contour integral which vanishes {\textit{a priori.}} While the required real integral emerged on setting to zero the real part of the contour quadrature, the obligatory, simultaneous vanishing of the imaginary part alluded to still another pair of real integrals forming the first two entries in the infinite log-sine sequence, known in its entirety. It turns out that identical reasoning, utilizing the same contour but a slightly different analytic function thereon, sufficed not only to evaluate that sequence anew, on the basis of a vanishing real part, but also, in setting to zero its conjugate imaginary part, to recover the fundamental Bernoulli number recurrence. The even order Bernoulli numbers $B_{2k}$ entering therein were revealed on the basis of their celebrated connection to Riemann's zeta function $ζ(2k).$ Conversely, by permitting the related Bernoulli polynomials to participate as integrand factors, Euler's connection itself received an independent demonstration, accompanied once more by an elegant log-sine evaluation, alternative to that already given. And, while the Bernoulli recurrence is intended to enjoy here the pride of place, this note ends on a gloss wherein all the motivating real integrals are recovered yet again, and in quite elementary terms, from the Fourier series into which the Taylor development for Log$(1-z)$ blends when its argument $z$ is restricted to the unit circle.
description: (version 3) various typesetting gaucheries repaired; (version 4) penultimate paragraph of introduction strengthened (one hopes) by having two sentences appended; (version 5) save for editorial journal markings and the correction of one minor typo, a faithful replica of text published in Real Analysis Exchange, Volume 41, Issue 2, Inroads section, 2016, pp. 351-366 (p. 366 intentionally blank)
On the taxonomy of Lasiurus
Creators: name: Francis, Charles M.
name: Simmons, Nancy B.
name: Van Cakenberghe, Victor
name: Upham, Nathan S.
name: Burgin, Connor J.
name: Group, On Behalf Of The Global Bat Taxonomy Working Group Of The IUCN SSC Bat Specialist
Publisher: name: Zenodo
Year: 2023

description: ###
 Author's note: this taxonomic decision is part of a series by members of the Global Bat Taxonomy Working Group to help settle ongoing disputes in the taxonomic literature and suggest targets for data collection. See the concise conclusion below as well as the full article with background and justification in PDF & DOCX formats for download. ### RECOMMENDATION We recommend the recognition of Lasiurus, Dasypterus, and Aeorestes as subgenera within the genus Lasiurus for the following reasons: The genus Lasiurus thus defined is monophyletic; The use of subgenera is appropriate to recognize groupings within the genus; There are no objective criteria for suggesting that a particular timing or degree of divergence merits elevating these subgenera to genera, and in any case there is considerable uncertainty in estimated divergence times of these groups and other genera in the family Vespertilionidae; and finally that Retention of the genus Lasiurus for all members of the tribe Lasiurini meets the ICZN (1999) goal of promoting maximum stability in nomenclature.
The Conformal Flow of Metrics and the General Penrose Inequality
Creators: name: Han, Qing
name: Khuri, Marcus
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The conformal flow of metrics [2] has been used to successfully establish a special case of the Penrose inequality, which yields a lower bound for the total mass of a spacetime in terms of horizon area. Here we show how to adapt the conformal flow of metrics, so that it may be applied to the Penrose inequality for general initial data sets of the Einstein equations. The Penrose conjecture without the assumption of time symmetry is then reduced to solving a system of PDE with desirable properties.
description: 13 pages; minor revisions
Larvae of trap-jaw ants, Odontomachus Latreille, 1804 (Hymenoptera: Formicidae): morphology and biological notes
Creators: name: Fox, E.G.P.
name: Smith, A.A.
name: Gibson, J.C.
name: Solis, D.R.
Publisher: name: The Austrian Society of Entomofaunistics
Year: 2017

description: This study aims to contribute to the neglected topic of larval biology in ants. The number of larval instars for three different species of trap-jaw ants, Odontomachus meinerti Forel, 1905, Odontomachus bauri Emery, 1892, and Odontomachus brunneus (Patton, 1894) was estimated to three based on the maximum width frequency distributions of head capsules from worker and male larvae. The obtained number of larval instars was smaller than from a previous report with another species in the genus, indicating possible interspecific variation. Larvae of different sexes and instars among the three different species were generally identical, differing merely by relative dimensions and patterns of hair distribution. Dorsal "doorknob" protuberances were recorded for the first time in the genus, and observed being used to fix larvae onto nest walls. From observing several individuals, we suggest the ornamentation of spiracle peritremes and the types of body protuberances are useful characters for larval taxonomy within this group. Moreover, a few individuals were found possessing anomalous structures which are reminiscent of characters from related taxa. Finally, some brief observations are made on an unidentified parasite found inside some mature larvae of O. bauri.
Social dimensions of physiological responses to global climate change: what we can learn from ants (Hymenoptera: Formicidae)
Creators: name: Chick, L.D.
name: Perez, A.
name: Diamond, S.E.
Publisher: name: The Austrian Society of Entomofaunistics
Year: 2017

description: Organisms possess a wide range of physiological mechanisms to cope with climate change, yet most of what we know about these mechanisms comes from solitary organisms. Because there is a tight linkage between climate change and organismal physiologies, understanding the physiological mechanisms driving the responses of species to climate change has emerged as a research priority in ecology and evolutionary biology. However, responses become more complex when considering social organisms, as their responses to a changing climate can involve hundreds or even thousands of individuals that make up a single colony. Ants are especially good model systems for how social organisms may physiologically cope with global changes in climate, as they are geographically widespread and occur across diverse climatic regimes. Surprisingly, ants have received remarkably little attention in context of physiological responses to climate change given their ubiquity and key roles in many ecosystems. In particular, we have yet to bridge the gap between individual and colony-level responses to climate change in social organisms. In this review, we use ants as a focal taxon to examine the general patterns and mechanisms associated with thermal physiology and performance in individuals; how colony-level performance might differ in social organisms; and where the fields of physiological ecology and myrmecology can converge to better understand how ants will respond to anthropogenic changes in climate.
Transfer znanja o gajenju leguminoza na evropskom kontinentu
Creators: name: Vasiljevic, Marjana
name: Djordjevic, Vuk
Publisher: name: Zenodo
Year: 2020
Subjects: legumes

description: Razvoj nauke i tehnologije u današnje vreme je toliko intenziviran, da se ne može zamisliti uspešan naučni kolektiv koji nema razvijenu međunarodnu saradnju. Institut za ratarstvo i povrtarstvo ima uspostavljenu uspešnu saradnju sa mnogim naučno-istraživačkim ustanovama širom sveta. Saradnja se ogleda u razmeni informacija, germplazme, rezultata naučnog rada, postavljanja zajedničkih ogleda, usavršavanja naučnog kadra kao i učešća u međunarodnim projektima. The development of science and technology today is so time-intensive that it is impossible to imagine a successful scientific team that exists developed in international cooperation. The Institute for Field and Vegetable Crops has established successful cooperation with many scientific-research institutions around the world. Cooperation is reflected in the exchange of information, germplasm, results of scientific work, setting up joint experiments, training of scientific staff as well as participation in international projects.
description: Publisher: Victoria Logistic. Magazine: ZA NAŠU ZEMLJU Vol. 96.
Embedded Markov chain approximations in Skorokhod topologies
Creators: name: Böttcher, Björn
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60B10, 60J05, 60J75

description: In order to approximate a continuous time stochastic process by discrete time Markov chains one has several options to embed the Markov chains into continuous time processes. On the one hand there is the Markov embedding, which uses exponential waiting times. On the other hand each Skorokhod topology naturally suggests a certain embedding. These are the step function embedding for $J_1$, the linear interpolation embedding for $M_1$, the multi step embedding for $J_2$ and a more general embedding for $M_2$. We show that the convergence of the step function embedding in $J_1$ implies the convergence of the other embeddings in the corresponding topologies, respectively. For the converse statement a $J_1$-tightness condition for embedded Markov chains is given. The result relies on various representations of the Skorokhod topologies. Additionally it is shown that $J_1$ convergence is equivalent to the joint convergence in $M_1$ and $J_2$.
description: To appear in Probability and Mathematical Statistics
Quandle theory and the optimistic limits of the representations of link groups
Creators: name: Cho, Jinseok
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: When a boudnary-parabolic representation of a link group to PSL(2,$\mathbb{C}$) is given, Inoue and Kabaya suggested a combinatorial method to obtain the developing map of the representation using the octahedral triangulation and the shadow-coloring of certain quandle. Quandle is an algebraic system closely related with the Reidemeister moves, so their method changes quite naturally under the Reidemeister moves. In this article, we apply their method to the potential function, which was used to define the optimsitic limit, and construct a saddle point of the function. This construction works for any boundary-parabolic representation, and it shows that the octahedral triangulation is good enough to study all possible boundary-parabolic representations of the link group. Furthermore the evaluation of the potential function at the saddle point becomes the complex volume of the representation, and this saddle point changes naturally under the Reidemeister moves because it is constructed using the quandle.
description: 38 pages, 25 figures. Many explanations are improved owing to journal referee's reviews
Acyclic Edge Coloring through the Lovász Local Lemma
Creators: name: Giotis, Ioannis
name: Kirousis, Lefteris
name: Psaromiligkos, Kostas I.
name: Thilikos, Dimitrios M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We give a probabilistic analysis of a Moser-type algorithm for the Lovász Local Lemma (LLL), adjusted to search for acyclic edge colorings of a graph. We thus improve the best known upper bound to acyclic chromatic index, also obtained by analyzing a similar algorithm, but through the entropic method (basically counting argument). Specifically we show that a graph with maximum degree $Δ$ has an acyclic proper edge coloring with at most $\lceil 3.74(Δ-1)\rceil+1 $ colors, whereas, previously, the best bound was $4(Δ-1)$. The main contribution of this work is that it comprises a probabilistic analysis of a Moser-type algorithm applied to events pertaining to dependent variables.
description: The proof of Lemma 5 has been corrected
An application of the Maslov complex germ method to the 1D nonlocal Fisher-KPP equation
Creators: name: Shapovalov, A. V.
name: Trifonov, A. Yu.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Biological sciences
subject: 35R09, 81Q20, 35B36, 35Q92

description: A semiclassical approximation approach based on the Maslov complex germ method is considered in detail for the 1D nonlocal Fisher-Kolmogorov-Petrovskii-Piskunov equation under the supposition of weak diffusion. In terms of the semiclassical formalism developed, the original nonlinear equation is reduced to an associated linear partial differential equation and some algebraic equations for the coefficients of the linear equation with a given accuracy of the asymptotic parameter. The solutions of the nonlinear equation are constructed from the solutions of both the linear equation and the algebraic equations. The solutions of the linear problem are found with the use of symmetry operators. A countable family of the leading terms of the semiclassical asymptotics is constructed in explicit form. The semiclassical asymptotics are valid by construction in a finite time interval. We construct asymptotics which are different from the semiclassical ones and can describe evolution of the solutions of the Fisher-Kolmogorov-Petrovskii-Piskunov equation at large times. In the example considered, an initial unimodal distribution becomes multimodal, which can be treated as an example of a space structure.
description: 28 pages, version accepted for publication in Int. J. Geom. Methods Mod. Phys
Spin dynamics and magneto-optical response in charge-neutral tunnel-coupled quantum dots
Creators: name: Gawełczyk, Michał
name: Machnikowski, Paweł
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We model the electron and hole spin dynamics in an undoped double quantum dot structure, considering the carrier tunneling between quantum dots. Taking into account also the presence of an in-plane or tilted magnetic field, we provide the simulation of magneto-optical experiments, like the time resolved Kerr rotation measurement, which are performed currently on such structures to probe the temporal spin dynamics. With our model, we reproduce the experimentally observed effect of the extension of the spin polarization life time caused by the spatial charge separation, which may occur in structures of this type. Moreover, we provide a number of qualitative predictions concerning the necessary conditions for observation of this effect as well as about possible channels of its suppression, including the spin-orbit coupling, which leads to tunneling of carriers accompanied by a spin-flip. We consider also the impact of the magnetic field tilting, which results in an interesting spin polarization dynamics.
description: 11 pages, 8 figures
Quasi-isometric classification of right-angled Artin groups I: the finite out case
Creators: name: Huang, Jingyin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Let $G$ and $G'$ be two right-angled Artin groups (RAAG). We show they are quasi-isometric iff they are isomorphic, under the assumption that $Out(G)$ and $Out(G')$ are finite. If only $Out(G)$ is finite, then $G'$ is quasi-isometric $G$ iff $G'$ is isomorphic to a finite index subgroup of $G$. In this case, we give an algorithm to determine whether $G$ and $G'$ are quasi-isometric by looking at their defining graphs.
description: Modifications and expansions according the referee's report. Exposition improved
Comparative study of the Meissner and skin effects in superconductors
Creators: name: Szeftel, Jacob
name: Sandeau, Nicolas
name: Khater, Antoine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Meissner effect is studied by using an approach based on Newton and Maxwell's equations. The objective is to assess the relevance of London's equation and shed light on the connection between the Meissner and skin effects. The properties of a superconducting cylinder, cooled in a magnetic field, are accounted for within the same framework. The radial Hall effect is predicted. The energy, associated with the Meissner effect, is calculated and compared with the binding energy of the superconducting phase with respect to the normal one.
description: 5 pages, 1 figure, theoretical work
On the generalized Cheeger problem and an application to 2d strips
Creators: name: Pratelli, Aldo
name: Saracco, Giorgio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 49Q10, 53A10, 35P15

description: In this paper we consider the generalization of the Cheeger problem which comes by considering the ratio between the perimeter and a certain power of the volume. This generalization has been already sometimes treated, but some of the main properties were still not studied, and our main aim is to fill this gap. We will show that most of the first important properties of the classical Cheeger problem are still valid, but others fail; more precisely, long and thin rectangles will give a counterexample to the property of Cheeger sets of being the union of all the balls of a certain radius, as well as to the uniqueness. The shape of Cheeger set for rectangles and strips is then studied as well as their Cheeger constant.
description: 15 pages, 1 figure
How to delink the UK's soybean imports and livestock supply chains from deforestation in the Amazon
Creators: name: Revoredo-Giha, Cesar
name: Costa-Font, Montserrat
Publisher: name: Zenodo
Year: 2021

description: About 57 per cent of the soybeans imported by the UK for animal feed comes from Brazil. However, Brazilian soybean production is one of the drivers of the Amazon’s deforestation, which has increased significantly since 2019. Cesar Revoredo-Giha and Montse Costa-Font discuss the options for the UK to make its livestock production sustainable.
description: Publisher: LSE Business Review https://blogs.lse.ac.uk/businessreview/2021/08/26/how-to-delink-the-uks-soybean-imports-and-livestock-supply-chains-from-deforestation-in-the-amazon/
Nilpotent matrices having a given Jordan type as maximum commuting nilpotent orbit
Creators: name: Iarrobino, Anthony
name: Khatami, Leila
name: Van Steirteghem, Bart
name: Zhao, Rui
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 15A27 (Primary), 05E40 (Secondary), 13E10, 15A21

description: The Jordan type of a nilpotent matrix is the partition giving the sizes of its Jordan blocks. We study pairs of partitions $(P,Q)$, where $Q={\mathcal Q}(P)$ is the Jordan type of a generic nilpotent matrix A commuting with a nilpotent matrix B of Jordan type $ P$. T. Košir and P. Oblak have shown that $Q$ has parts that differ pairwise by at least two. Such partitions, which are also known as "super distinct" or "Rogers-Ramanujan", are exactly those that are stable or "self-large" in the sense that ${\mathcal Q}(Q)=Q$. In 2012 P. Oblak formulated a conjecture concerning the cardinality of the set of partitions $P$ such that ${\mathcal Q}(P)$ is a given stable partition $ Q$ with two parts, and proved some special cases. R. Zhao refined this to posit that those partitions $P$ such that ${\mathcal Q}(P)= Q=(u,u-r)$ with $u>r\ge 2$ could be arranged in an $(r-1)$ by $(u-r)$ table ${\mathcal T}(Q)$ where the entry in the $k$-th row and $\ell$-th column has $k+\ell$ parts. We prove this Table Theorem, and then generalize the statement to propose a Box Conjecture for the set of partitions $P$ for which ${\mathcal Q}(P)=Q$, for an arbitrary stable partition $Q$.
description: v1: 48 pages, 8 figures ; v2: 61 pages, 7 figures, colors used in tables, improved exposition, details added to some proofs; v3: 48 pages, shortened for submission, then extensively revised for clarity/corrected after substantial referee comments
Elastodynamic cloaking and field enhancement for soft spheres
Creators: name: Diatta, Andre
name: Guenneau, Sebastien
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper, we bring to the awareness of the scientific community and civil engineers, an important fact: the possible lack of wave protection of transformational elastic cloaks. To do so, we propose spherical cloaks described by a non-singular asymmetric elasticity tensor depending upon a small parameter $η,$ that defines the softness of a region one would like to conceal from elastodynamic waves. By varying $η$, we generate a class of soft spheres dressed by elastodynamic cloaks, which are shown to considerably reduce the soft spheres' scattering. Importantly, such cloaks also provide some wave protection except for a countable set of frequencies, for which some large elastic field enhancement (resonance peaks) can be observed within the cloaked soft spheres, hence entailing a possible lack of wave protection. We further present an investigation of trapped modes in elasticity via which we supply a good approximation of such Mie-type resonances by some transcendental equation. Next, after a detailed presentation of spherical elastodynamic PML of Cosserat type, we introduce a novel generation of cloaks, the mixed cloaks, as a solution to the lack of wave protection in elastodynamic cloaking. Indeed, mixed cloaks achieve both invisibility cloaking and protection throughout a large range of frequencies. We think, mixed cloaks will soon be generalized to other areas of physics and engineering and will in particular foster studies in experiments.
description: V2: major changes. More details on the study of trapped modes in elasticity. Mixed cloaks introduced. Latex files, 27 pages, 14 figures. The last version will appear at Journal of Physics D: Applied Physics. Pacs:41.20.Jb,42.25.Bs,42.70.Qs,43.20.Bi,43.25.Gf. arXiv admin note: text overlap with arXiv:1403.1847
Multiple Myeloma and Sarcopenia: Scoping Review Protocol
Creators: name: Ternes, Leslie
name: Purdy, Graeme
name: Bernard, Stephanie
name: McNeely, Margaret
Publisher: name: figshare
Year: 2023
Subjects: Rehabilitation
Physiotherapy

description: This review explores how sarcopenia is characterized in individuals with multiple myeloma within the setting of physical activity and exercise, while determining the extent of the research examining exercise for the prevention and treatment of sarcopenia in individuals with multiple myeloma. The population includes human adults with a cancer diagnosis of multiple myeloma at any stage of disease, and at any point of treatment trajectory.
WORK IN AMERICA: 1950 to 2019
Creators: name: Ruggeri, Giuseppe
Publisher: name: Zenodo
Year: 2022
Subjects: work in america

description: This paper uses a consistent methodology to estimate average weekly hours of work in the United States in 1950 and 2019. It also reviews a number of studies that cover parts of the same period. Making adjustments where possible to reduce methodological differences, this review identifies three sub-periods: 1950 to 1980, when working hours declined; 1980 to 1990, when working hours rose; and 1990 to 2019, when working hours remained constant. It also briefly discusses the importance of a variety of factors affecting the different response by working hours to the growth of real GDP and labor productivity during the first and last subperiods.