cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Maxwell field with gauge fixing term in the radiation- and matter-dominant stages: exact solution and stress tensor
Creators: name: Ye, Xuan
name: Zhang, Yang
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the Maxwell field with a general gauge fixing (GF) term in the radiation-dominant (RD) and matter-dominant (MD) stages of expanding Universe, as a continuation to the previous work in de Sitter space. We derive the exact solutions, perform the covariant canonical quantization and obtain the stress tensor in the Gupta-Bleuler (GB) physical states, which is independent of the GF constant and is also invariant under the quantum residual gauge transformation. The transverse stress tensor is similar in all flat Robertson-Walker spacetimes, and its vacuum part is $\propto k^4$ and becomes zero after the 0th-order adiabatic regularization. The longitudinal-temporal stress tensor, in both RD and MD stages, is zero due to a cancelation between the longitudinal and temporal parts in the GB states, and so is the particle part of the GF stress tensor. The vacuum GF stress tensor, in the RD stage, contains $k^4,k^2$ divergences and becomes zero by the 2nd-order regularization, however, in the MD stage, contains $k^4, k^2, k^0$ divergences and becomes zero by the 4th-order regularization. So, the order of adequate regularization depends not only upon the type of fields, but also upon the background spacetimes. In summary, in both the RD and MD stages, like in de Sitter space, the total regularized vacuum stress tensor is zero, only the transverse photon part remains, and this holds independent of the GF term.
description: 19 pages, add references, published
The Enriching Interplay between Openness and Interest: A Theoretical Elaboration of the OFCI Model and a First Empirical Test
Creators: name: Ziegler, Matthias
name: Schroeter, Titus A.
name: Lüdtke, Oliver
name: Roemer, Lena
Publisher: name: Humboldt-Universität zu Berlin
Year: 2018
Subjects: subject: crystallized intelligence
subject: knowledge
subject: Openness to Experience
subject: interests
subject: Investment Theory
subject: OFCI model
subject: TESSERA
subject: 610 Medizin und Gesundheit
subject: 150 Psychologie

description: The Openness-Fluid-Crystallized-Intelligence (OFCI) model posits long-term relations between Openness and cognitive abilities and has been successfully tested with longitudinal data. However, research on the developmental interplay between cognitive abilities and personality exists only sparsely. The current paper focuses on a theoretical development of the OFCI model which suggests micro-level mechanisms underlying the long-term development. Specifically, within-situation relations between Openness, interests, situational perception, cognitive abilities, and emotions are proposed to explain longitudinal relations between Openness and cognitive abilities. Using experience sampling, selected parts of this elaboration were empirically scrutinized in a first test of the proposed ideas. Openness and specific interest both varied substantially across situations and covaried systematically. In interaction with an indicator of fluid intelligence, this covariation was related to an indicator of crystallized intelligence. The paper contributes to theorizing the intertwined development of personality and cognitive abilities, and highlights the importance of within-situation research for explaining long-term development.
The Incidence of Highly-Obscured Star-Forming Regions in SINGS Galaxies
Creators: name: Prescott, Moire K. M.
name: Kennicutt, Robert C.
name: Bendo, George J.
name: Buckalew, Brent A.
name: Calzetti, Daniela
name: Engelbracht, Charles W.
name: Gordon, Karl D.
name: Hollenbach, David J.
name: Lee, Janice C.
name: Moustakas, John
name: Dale, Daniel A.
name: Helou, George
name: Jarrett, Thomas H.
name: Murphy, Eric J.
name: Smith, John-David T.
name: Akiyama, Sanae
name: Sosey, Megan L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the new capabilities of the Spitzer Space Telescope and extensive multiwavelength data from the Spitzer Infrared Nearby Galaxies Survey (SINGS), it is now possible to study the infrared properties of star formation in nearby galaxies down to scales equivalent to large HII regions. We are therefore able to determine what fraction of large, infrared-selected star-forming regions in normal galaxies are highly obscured and address how much of the star formation we miss by relying solely on the optical portion of the spectrum. Employing a new empirical method for deriving attenuations of infrared-selected star-forming regions we investigate the statistics of obscured star formation on 500pc scales in a sample of 38 nearby galaxies. We find that the median attenuation is 1.4 magnitudes in H-alpha and that there is no evidence for a substantial sub-population of uniformly highly-obscured star-forming regions. The regions in the highly-obscured tail of the attenuation distribution (A_H-alpha > 3) make up only ~4% of the sample of nearly 1800 regions, though very embedded infrared sources on the much smaller scales and lower luminosities of compact and ultracompact HII regions are almost certainly present in greater numbers. The highly-obscured cases in our sample are generally the bright, central regions of galaxies with high overall attenuation but are not otherwise remarkable. We also find that a majority of the galaxies show decreasing radial trends in H-alpha attenuation. The small fraction of highly-obscured regions seen in this sample of normal, star-forming galaxies suggests that on 500pc scales the timescale for significant dispersal or break up of nearby, optically-thick dust clouds is short relative to the lifetime of a typical star-forming region.
description: Accepted for publication in ApJ; emulateapj style, 30 pages, 18 figures (compressed versions), 3 tables
Protokoły posiedzeń Biura Politycznego KC PPR 1944-1945
Creators: name: Krzoska, Markus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Curiosity Notebook: The Design of a Research Platform for Learning by Teaching
Creators: name: Lee, Ken Jen
name: Chauhan, Apoorva
name: Goh, Joslin
name: Nilsen, Elizabeth
name: Law, Edith
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.3; I.2.6; K.3.1

description: While learning by teaching is a popular pedagogical technique, it is a learning phenomenon that is difficult to study due to variability in the tutor-tutee pairings and learning environments. In this paper, we introduce the Curiosity Notebook, a web-based research infrastructure for studying learning by teaching via the use of a teachable agent. We describe and provide rationale for the set of features that are essential for such a research infrastructure, outline how these features have evolved over two design iterations of the Curiosity Notebook and through two studies -- a 4-week field study with 12 elementary school students interacting with a NAO robot and an hour-long online observational study with 41 university students interacting with an agent -- demonstrate the utility of our platform for making observations of learning-by-teaching phenomena in diverse learning environments. Based on these findings, we conclude the paper by reflecting on our design evolution and envisioning future iterations of the Curiosity Notebook.
description: 26 pages, 7 figures, ACM CSCW 2021
Factorization of radiative leptonic D-meson decay with sub-leading power corrections
Creators: name: Lu, Long-Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we calculate the sub-leading power contributions to the radiative leptonic $D\toγ\,\ell \,ν$ decay. For the first time, we provide the analytic expressions of next-to-leading power contributions and the error estimation associated with the power expansion of ${\cal O}(Λ_{\rm QCD}/m_c)$. In our calculation, we adopt two different models of the $D$-meson distribution amplitudes $ϕ_{D,\rm I}^+$ and $ϕ_{D,\rm II}^+$. Within the framework of the QCD factorization as well as the dispersion relation, we evaluate the soft contribution up to the next-to-leading logarithmic accuracy, and the higher-twist contribution from the two-particle and three-particle distribution amplitudes is also considered. Finally, we find that all the sub-leading power contributions are significant at $λ_D(μ_0)=354\,\rm MeV$, and the next-to-leading power contributions will lead to $143\%$ in $ϕ_{D,\rm I}^+$ and $120\%$ in $ϕ_{D,\rm II}^+$ corrections to leading power vector form factors with $E_γ=0.5\,\rm GeV$. As the corrections from the higher-twist and local sub-leading power contributions will be enhanced with the growing of the inverse moment, it is difficult to extract an appropriate inverse moment of the $D$-meson distribution amplitude. The predicted branching fractions are $(1.88_{-0.29}^{+0.36})\times10^{-5}$ for $ϕ_{D,\rm I}^+$ and $(2.31_{-0.54}^{+0.65})\times10^{-5}$ for $ϕ_{D,\rm II}^+$, respectively.
description: 19 pages, 7 figures, to be published in Chinese Physics C
Chersotis cuprea Schiffermuller 1775
Creators: name: Koren, Toni
name: Podnar, Martina
name: Vojvoda, Ana Mrnjavčić
name: Beshkov, Stoyan
name: Mihoci, Iva
name: Kučinić, Mladen
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Chersotis
Chersotis cuprea

description: Chersotis cuprea ([Denis & Schiffermüller], 1775).
New records: NP Risnjak, Gerovski kraj, meadow Lazac, 12.8.2019, 5 ex., leg. Koren; NP Risnjak, Gerovski kraj, meadow Šegine, 12.8.2019, 3 ex., leg. Koren; NP Risnjak, Guslica, 15.8.2019, 3 ex., leg. Koren; Mt. Velebit, Zavižan, 18.8.2017,> 20 ex., leg. Koren; Lička Plješevica at 1230 m, 04.09.2008, 1 ex., leg. Mihoci; Lička Plješevica at 1500 m, 13.08.2008. 2 ex., leg. Mihoci; Mt. Biokovo, Lađena, 27.08.1990, 1 ex., leg Kučinić.
Genetic data: Ch. cuprea specimens, CROB259 and CROB511 analyzed in this study share the haplotype with Austrian (ABOLC043-16, ABOLD199-16) and German (FBLMX164-11, GWORZ514-10) specimens. They are comprised within well supported monophyletic clade together with a third Croatian sample and Norwegian (LON271-08, LON3653-16), Italian (LEATB737-13, LEATC168-13) and Finnish (LEFIA609-10) specimens. Intraspecific distances within this taxon were in range 0.2-0.8 (Tab. 2).
description: Published as part of Koren, Toni, Podnar, Martina, Vojvoda, Ana Mrnjavčić, Beshkov, Stoyan, Mihoci, Iva & Kučinić, Mladen, 2021, Genus Chersotis Boisduval, 1840 (Lepidoptera: Noctuidae) in Croatia with some notes on the other Balkan countries: DNA barcoding, distribution and new records, pp. 86-108 in Ecologica Montenegrina 48 on page 90, DOI: 10.37828/em.2021.48.12, http://zenodo.org/record/8029303
A study of interlayer assisted friction welding of incompatible materials
Creators: name: Neelam, Jayanth R.
Publisher: name: University of British Columbia
Year: 2010

description: Friction welding has become an accepted method of joining many dissimilar materials and is now being extensively used in industry. Even though it is the single most versatile method of joining similar and dissimilar materials, there are still many more material combinations that cannot be welded by this process or which result in an unsatisfactory brittle weld. There are several applications for these materials in industry. The objective of this work was to overcome these 'no-weld' or 'brittle-weld' limitations. The proposed process involves introduction of a third element into the conventional two-element friction welding process. The third element used is a material which forms a good friction weld with both of the other two elements when welded separately. If the two parent materials are not compatible when they come into direct contact due to the formation of intermetallics and lack of conditions inducive to good bonding, the third element, which forms good welds with both of the parent parts, acts as a buffer between the other two. While keeping them apart, it forms a joint between the two incompatible parent materials. Among several probable candidates for intermediate materials, only a few meet the requirement that they create proper conditions for bonding. After a friction welding machine had been designed and built, it was successfully tested to weld both similar and dissimilar materials by both the conventional and the proposed three-element processes. Welds between compatible materials of high efficiency were obtained by the conventional process. For material combinations normally incompatible, joints were made possible with the aid of the intermediate elements. Various degrees of joint-strength depending upon the material combinations used were observed. The strength of the joints obtained between bronze and steel, for example, was increased by as much as 40% by using a copper interlayer. The welds were subjected to tensile tests. Microstructural examinations were conducted on the separated surfaces to determine the mode of failure. Electron micro-probe analyses were also conducted to determine if there were any diffusion of elements and/or formation of intermetallics. Quantitative analyses were also made on the diffused elements. Some hypotheses were put forward as to the conditions that dictate the joint strength obtained by the three-element process and also the requirements of materials which may perform adequately as intermediate materials.
Label Assistant: A Workflow for Assisted Data Annotation in Image Segmentation Tasks
Creators: name: Schilling, M. P.
name: Rettenberger, L.
name: Münke, F.
name: Cui, H.
name: Popova, A.A.
name: Levkin, P. A.
name: Mikut, R.
name: Reischl, M.
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021

description: Recent research in the field of computer vision strongly focuses on deep learning architectures to tackle image processing problems. Deep neural networks are often considered in complex image processing scenarios since traditional computer vision approaches are expensive to develop or reach their limits due to complex relations. However, a common criticism is the need for large annotated datasets to determine robust parameters. Annotating images by human experts is time-consuming, burdensome, and expensive. Thus, support is needed to simplify annotation, increase user efficiency, and annotation quality. In this paper, we propose a generic workflow to assist the annotation process and discuss methods on an abstract level. Thereby, we review the possibilities of focusing on promising samples, image pre-processing, pre-labeling, label inspection, or post-processing of annotations. In addition, we present an implementation of the proposal by means of a developed flexible and extendable software prototype nested in hybrid touchscreen/laptop device.
La 'segnorina' neorealista tra melodramma e noir: La tratta delle bianche di Luigi Comencini
Creators: name: Di Chiara, Francesco
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Italian critics of the early 50s labelled as "pink neo-realism"  contemporary movies which tried to bring the aesthetics of the Italian  Cinema of the Liberation back inside the boundaries of a more narrative  and overtly mainstream cinema. Even though this was a very moralistic  stand, historically grounded in the harsh attitude of Italian debate  about cinema in the early days of the Cold War, it is nonetheless an  interesting starting point in order to reframe the picture of that kind  of cinema. It not only borrows its relationship with the new bounds of  representation (poverty, prostitution, organized crime are now allowed  to appear in an Italian movie) from the not yet concluded neorealist  season, but it also has connections with American film genres; however,  in doing so it drops the usual didactic tone in favour of a badly  concealed sensationalism. For its strong ties both to the neorealist  cinema and to genres such as film noir or melodrama, La tratta delle bianche (Luigi  Comencini, 1952) can be seen as an ideal example of how the  intersection between these different aspects worked in a crucial moment  for the definition of the Post-World War II Italian cinematic industry.
description: Annali Online  Lettere - Ferrara, II 1 (2007)
Aufstiegschancen und Handlungsräume in ostmitteleuropäischen Zentren um 1500
Creators: name: Lambrecht, Karen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 3 (1998)
Backward SDEs with constrained jumps and quasi-variational inequalities
Creators: name: Kharroubi, Idris
name: Ma, Jin
name: Pham, Huyên
name: Zhang, Jianfeng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider a class of backward stochastic differential equations (BSDEs) driven by Brownian motion and Poisson random measure, and subject to constraints on the jump component. We prove the existence and uniqueness of the minimal solution for the BSDEs by using a penalization approach. Moreover, we show that under mild conditions the minimal solutions to these constrained BSDEs can be characterized as the unique viscosity solution of quasi-variational inequalities (QVIs), which leads to a probabilistic representation for solutions to QVIs. Such a representation in particular gives a new stochastic formula for value functions of a class of impulse control problems. As a direct consequence, this suggests a numerical scheme for the solution of such QVIs via the simulation of the penalized BSDEs.
description: Published in at http://dx.doi.org/10.1214/09-AOP496 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
$k$-spaces of non-domain-valued geometric points
Creators: name: Goswami, Amartya
Publisher: name: arXiv
Year: 2023
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20, 14A99, 16D25

description: The aim of this paper is to study the topological properties of algebraic sets with zero divisors. We impose a subbasic topology on the set of proper ideals of a $k$-algebra and this new ``$k$-space'' becomes a generalization of the corresponding Zariski space. We prove that a $k$-space is $T_{\scriptscriptstyle 0}$, quasi-compact, spectral, and connected. Moreover, we study continuous maps between such $k$-spaces. We conclude with a question about construction of a sheaf of $k$-spaces similar to affine schemes.
Adolf Kardinal Bertram. Sein Leben und Wirken auf dem Hintergrund der Geschichte seiner Zeit. Teil I u. II
Creators: name: Adriányi, Gabriel
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 2 (1995)
Chersotis laeta subsp. leonhardi
Creators: name: Koren, Toni
name: Podnar, Martina
name: Vojvoda, Ana Mrnjavčić
name: Beshkov, Stoyan
name: Mihoci, Iva
name: Kučinić, Mladen
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Chersotis
Chersotis laeta
Chersotis laeta leonhardi (rebel, 1904)

description: Chersotis laeta leonhardi (Rebel, 1904).
New records: Mt. Biokovo, Podglogovnik, 19.06.2007, 1 ex., leg. Mihoci; Mt. Biokovo, meadows at 1080 m, 18.06.2007, 5 ex., leg. Mihoci; Mt. Biokovo, Ravna Vlaška, 13.07.2013, 2 ex., leg. Mihoci; Mt. Biokovo, above Vošac, 15.07.2013, 6 ex., leg. Mihoci; Mt. Biokovo, electric substation, 18.06.2007, 3 ex., leg. Mihoci; 02.07.2007, 5 ex., leg. Mihoci; Mt. Biokovo, below Sv. Jure, 24.07.1994, 1 ex., leg. Kučinić, 02.07.2007, 9 ex., leg. Mihoci, 16.07.2013, 5 ex., leg. Mihoci; Mt. Biokovo, Lađena, 22.07.1995, 1 ex., leg. Vajdić, 24.07.1995. 1 ex., leg. Kučinić; Mt. Biokovo, near the chapel, 13.07.1994, 1 ex., leg. Kučinić, 14.06.1991, 1 ex., leg. Kučinić.
Genetic data: Sequences from this study represent the first published DNA barcodes for this species and clustered within two well supported monophyletic clades, the first one containing all samples of Ch. laeta leonhardi, and the second clade samples of Ch. laeta macini and one of Ch. laeta achaiana (Fig. 1). The intraspecific p-distances ranged from 0,2-2.9 % (2.7-2.9 % between two Ch. laeta subspecies, Table 2). They marginally overlapped with interspecific distances revealed between Ch. laeta and its sister species Ch. fimbriola (2.9-3.2 %, Tab. 2). Moreover, they are in the range or even larger than interspecific distances between several well-defined species of the genus such are: Ch. andreae vs. Ch. multangula (2.7-3-0 %), Ch. anatolica vs. Ch. elegans (2.4-2.7%) and Ch. margaritacea cyrnea vs. Ch. margaritacea (1.7 – 2.4 %) (Tab. 2). Those findings are consistent with the results of the ABGD analysis which advocates distinct species status of Ch. laeta leonhardi and Ch. laeta achaiana which are found sympatric and synchronic in Albania, Tomorr Mt., as well as with unresolved trichotomy obtained in NJ analysis between Ch. fimbriola, Ch. laeta achaiana /macini (Fig. 5: a-e) and Ch. laeta leonhardi (Fig. 6). All above strongly argues for the necessity of taxonomic revision within Ch. laeta which, based on molecular data, could be split into two species. Additional morphological analysis of the greater number of specimens from Ch. laeta subspecies from different localities should be undertaken to support the rising of the Ch. laeta leonhardi on the species level.
description: Published as part of Koren, Toni, Podnar, Martina, Vojvoda, Ana Mrnjavčić, Beshkov, Stoyan, Mihoci, Iva & Kučinić, Mladen, 2021, Genus Chersotis Boisduval, 1840 (Lepidoptera: Noctuidae) in Croatia with some notes on the other Balkan countries: DNA barcoding, distribution and new records, pp. 86-108 in Ecologica Montenegrina 48 on page 91, DOI: 10.37828/em.2021.48.12, http://zenodo.org/record/8029303
Similar Scale-invariant Behaviors between Soft Gamma-ray Repeaters and An Extreme Epoch from FRB 121102
Creators: name: Wei, Jun-Jie
name: Wu, Xue-Feng
name: Dai, Zi-Gao
name: Wang, Fa-Yin
name: Wang, Pei
name: Li, Di
name: Zhang, Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The recent discovery of a Galactic fast radio burst (FRB) associated with a hard X-ray burst from the soft gamma-ray repeater (SGR) J1935+2154 has established the magnetar origin of at least some FRBs. In this work, we study the statistical properties of soft gamma-/hard X-ray bursts from SGRs 1806--20 and J1935+2154 and of radio bursts from the repeating FRB 121102. For SGRs, we show that the probability density functions for the differences of fluences, fluxes, and durations at different times have fat tails with a $q$-Gaussian form. The $q$ values in the $q$-Gaussian distributions are approximately steady and independent of the temporal interval scale adopted, implying a scale-invariant structure of SGRs. These features indicate that SGR bursts may be governed by a self-organizing criticality (SOC) process, confirming previous findings. Very recently, 1652 independent bursts from FRB 121102 have been detected by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Here we also investigate the scale-invariant structure of FRB 121102 based on the latest observations of FAST, and show that FRB 121102 and SGRs share similar statistical properties. Given the bimodal energy distribution of FRB 121102 bursts, we separately explore the scale-invariant behaviors of low- and high-energy bursts of FRB 121102. We find that the $q$ values of low- and high-energy bursts are different, which further strengthens the evidence of the bimodality of the energy distribution. Scale invariance in both the high-energy component of FRB 121102 and SGRs can be well explained within the same physical framework of fractal-diffusive SOC systems.
description: 9 pages, 3 figures, 1 table. Accepted for publication in ApJ
Due donne anonime e la corifea sulla scena delle Ecclesiazuse di Aristofane (vv. 1-284)
Creators: name: Andrisano, Angela M.
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2014

description: The article takes into account the lines and their distribution throughout the prologue of Ecclesiazusae basing on its last edition (by N. Wilson). A new insight into the play is provided by analyzing the ethe of the anonymous characters and the function of the leader of the chorus.
description: Annali Online  Lettere - Ferrara, VIII 2 (2013)
Table SM2 from Isochrony in Titi Monkeys duets: social context as a proximate cause of duets’ rhythm and regularity
Creators: name: De Gregorio, Chiara
name: Antonini, Paola
name: Heymann, Eckhard W.
name: Gamba, Marco
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310901
subject: Animal behaviour

description: Post-hoc results - isochrony
Spatially Anisotropic Heisenberg Kagome Antiferromagnet
Creators: name: Schnyder, Andreas P.
name: Starykh, Oleg A.
name: Balents, Leon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the quasi-one-dimensional limit of the spin-1/2 quantum Heisenberg antiferromagnet on the kagome lattice. The lattice is divided into antiferromagnetic spin-chains (exchange J) that are weakly coupled via intermediate "dangling" spins (exchange J'). Using one-dimensional bosonization, renormalization group methods, and current algebra techniques the ground state is determined in the limit J'<
description: 17 pages, 3 figures, corrected sign error, corrected typos, updated references
Field-Induced Superconductivity near the Superconducting Critical Pressure in UTe2
Creators: name: Aoki, Dai
name: Kimata, Motoi
name: Sato, Yoshiki J.
name: Knebel, Georg
name: Honda, Fuminori
name: Nakamura, Ai
name: Li, Dexin
name: Homma, Yoshiya
name: Shimizu, Yusei
name: Knafo, William
name: Braithwaite, Daniel
name: Valiska, Michal
name: Pourret, Alexandre
name: Brison, Jean-Pascal
name: Flouquet, Jacques
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the magnetoresistance in the novel spin-triplet superconductor UTe2 under pressure close to the critical pressure Pc, where the superconducting phase terminates, for field along the three a, b and c-axes in the orthorhombic structure. The superconducting phase for H // a-axis just below Pc shows a field-reentrant behavior due to the competition with the emergence of magnetic order at low fields. The upper critical field Hc2 for H // c-axis shows a quasi-vertical increase in the H-T phase diagram just below Pc, indicating that superconductivity is reinforced by the strong fluctuations which persist even at high fields above 20T. Increasing pressure leads to the disappearance of superconductivity at zero field with the emergence of magnetic order. Surprisingly, field-induced superconductivity is observed at high fields, where a spin-polarized state is realized due to the suppression of the magnetic ordered phases; the spin-polarized state is favorable for superconductivity, whereas the magnetic ordered phase at low field seems to be unfavorable. The huge Hc2 in the spin-polarized state seems to imply a spin-triplet state. Contrary to the a- and c-axes, no field-reinforcement of superconductivity occurs for magnetic field along the b-axis. We compare the results with the field-reentrant superconductivity above the metamagnetic field, Hm for the field direction tilted by about 30 deg. from b to c-axis at ambient pressure as well as the field-reentrant (-reinforced) superconductivity in ferromagnetic superconductors, URhGe and UCoGe.
description: 7 pages, 5 figures, submitted to J. Phys. Soc. Jpn
Chemical post-processing of magneto-hydrodynamical simulations of star-forming regions: robustness and pitfalls
Creators: name: Ferrada-Chamorro, Simón
name: Lupi, Alessandro
name: Bovino, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A common approach to model complex chemistry in numerical simulations is via post-processing of existing magneto-hydrodynamic simulations, relying on computing the evolution of chemistry over the dynamic history of a subset of particles from within the raw simulation. Here, we validate such a technique, assessing its ability to recover the abundances of chemical species, using the chemistry package KROME. We also assess, for the first time, the importance of the main free input parameters, by means of a direct comparison with a self-consistent state-of-the-art simulation in which chemistry was directly coupled to hydrodynamics. We have found that the post-processing is highly reliable, with an accuracy at the percent level, even when the most relaxed input parameters are employed. In particular, our results show that the number of particles used does not affect significantly the average properties, although it suppresses the appearance of possibly important spatial features. On the other hand, the choice of the integration time-step plays a crucial role. Longer integration time-steps can produce large errors, as the post-processing solution will be forced towards chemical equilibrium, a condition that does not always necessarily apply. When the interpolation-based reconstruction of chemical properties is performed, the errors further increase up to a factor of $\sim2$. Concluding, our results suggest that this technique is extremely useful when exploring the relative quantitative effect of different chemical parameters and/or networks, without the need of re-running simulations multiple times, but some care should be taken in the choice of particles sub-sample and integration time-step.
description: 11 pages, 6 figures, 3 tables
Tadeusz Mołdawa, Ludzie władzy 1944-1991. Władze państwowe i polityczne Polski według stanu na dzień 28. 2. 1991
Creators: name: Hartmann, Karl
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Type II critical phenomena of neutron star collapse
Creators: name: Noble, Scott C.
name: Choptuik, Matthew W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate spherically-symmetric, general relativistic systems of collapsing perfect fluid distributions. We consider neutron star models that are driven to collapse by the addition of an initially "in-going" velocity profile to the nominally static star solution. The neutron star models we use are Tolman-Oppenheimer-Volkoff solutions with an initially isentropic, gamma-law equation of state. The initial values of 1) the amplitude of the velocity profile, and 2) the central density of the star, span a parameter space, and we focus only on that region that gives rise to Type II critical behavior, wherein black holes of arbitrarily small mass can be formed. In contrast to previously published work, we find that--for a specific value of the adiabatic index (Gamma = 2)--the observed Type II critical solution has approximately the same scaling exponent as that calculated for an ultrarelativistic fluid of the same index. Further, we find that the critical solution computed using the ideal-gas equations of state asymptotes to the ultrarelativistic critical solution.
description: 24 pages, 22 figures, RevTeX 4, submitted to Phys. Rev. D
Jan Drabina, Kontakty papiestwa z Polska 1378-1417 w latach wielkiej schizmy zachodniej
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Die Herzöge Albrecht Friedrich und Georg Friedrich von Preußen und das Bistum Ermland (1568—1618). Regesten aus dem Herzoglichen Briefarchiv und den Ostpreußischen Folianten mit ergänzenden Schriftstücken bis 1699
Creators: name: Michels, Georg
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Tlingit shaman charms
Creators: name: Lovejoy, James
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines 480 Tlingit shamanS1 charms using Panofsky's method of analysis. The ms. catalogue notes on 380 charms collected by George Emmons were compiled together with published information on 100 others to yield firm data on provenance, context, materials, frequency of various motifs, and use. This data is presented in a series of tables which are discussed in the text. The most frequently appearing motifs on charms were human beings of various types, and the most common animal motif was the land otter, but variability of motif type and complexity was pronounced. Examination of the Tlingit context of the shaman's practice and specific Tlingit beliefs about the land otter reveal that it was the animal most frequently connected with shamanism, and the most important to his practice. Tlingit cosmological structure was reviewed in order to locate the land otter in the Tlingit scheme and shed light on the taboos associated with it. The insights of Mary Douglas were referenced, comparing the ways the Tlingit structure is like others worldwide, and how the land otter functioned as an essential mediator between the secular and sacred for the Tlingit.
Perrierophytum madagascariense M. M. Hanes & Callm.
Creators: name: Hanes, Margaret M.
name: Mashburn, Brock
name: Callmander, Martin W.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Perrierophytum
Perrierophytum madagascariense

description: Perrierophytum madagascariense (Baker) M.M. Hanes & Callm., comb. nov.
Kosteletzkya madagascariensis Baker in J. Bot. 20: 46. 1882.
Holotypus: MADAGASCAR: “in a wooded valley in West Betsileo”, VII.1880, fl. & fr., Baron 121 (2-part specimen: K000240497, K000240498]!; iso-: G [G00014376]!, P [P00037096]!).
Distribution and ecology. – Perrierophytum madagascariense is known from a single collection in “Betsileo-land”. This locality refers to the Malagasy tribe that inhabits the collection area and can be understood as somewhere in either the Amoron’i Mania or Haute Matsiatra regions, that the Betsileo people traditionally inhabited.
Conservation status. – Perrierophytum madagascariense is known only from a single location, where it was collected in 1880. Relatively few fragments of native vegetation remain on the highlands in the Betsileo region of Madagascar, and the absence of more recent collections indicates that this species is not common. It is reasonable to infer that the habitat in which the species was originally collected has largely disappeared, likely through deforestation, overgrazing, or fire, and would suggest that P. madagascariense could be extinct. Yet, in the absence of exhaustive surveys of the region, including a targeted search for the species, such an assessment is premature. Even if the species was found in a remaining habitat fragment or in a protected area in the Betsileo region, the EOO would likely still be under 100 km ², with a single location likely to still be threatened by the factors mentioned above. In addition, continued decline in extent and quality of habitat would be inferred. Therefore we recommend that P. madagascariense be assessed as “Critically Endangered” [CR B1ab(iii)].
Notes. – Perrierophytum madagascariense can be differentiated from other species by its sparsely pubescent leaves (vs. densely pubescent), and relatively small flowers (Table 1).
description: Published as part of Hanes, Margaret M., Mashburn, Brock & Callmander, Martin W., 2022, Transfer of the endemic Malagasy species of Kosteletzkya to Hibiscus and Perrierophytum (Malvaceae), pp. 161-171 in Candollea 77 (2) on page 166, DOI: 10.15553/c2022v772a4, http://zenodo.org/record/7616567
Stabilizing the intensity for a Hamiltonian model of the FEL
Creators: name: Bachelard, R.
name: Chandre, C.
name: Fanelli, D.
name: Leoncini, X.
name: Vittot, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The intensity of an electromagnetic wave interacting self-consistently with a beam of charged particles, as in a Free Electron Laser, displays large oscillations due to an aggregate of particles, called the macro-particle. In this article, we propose a strategy to stabilize the intensity by destabilizing the macro-particle. This strategy involves the study of the linear stability of a specific periodic orbit of a mean-field model. As a control parameter - the amplitude of an external wave - is varied, a bifurcation occur in the system which has drastic effects on the self-consistent dynamics, and in particular, on the macro-particle. We show how to obtain an appropriate tuning of the control parameter which is able to strongly decrease the oscillations of the intensity without reducing its mean-value.
CUREE: A Curious Underwater Robot for Ecosystem Exploration
Creators: name: Girdhar, Yogesh
name: McGuire, Nathan
name: Cai, Levi
name: Jamieson, Stewart
name: McCammon, Seth
name: Claus, Brian
name: Soucie, John E. San
name: Todd, Jessica E.
name: Mooney, T. Aran
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The current approach to exploring and monitoring complex underwater ecosystems, such as coral reefs, is to conduct surveys using diver-held or static cameras, or deploying sensor buoys. These approaches often fail to capture the full variation and complexity of interactions between different reef organisms and their habitat. The CUREE platform presented in this paper provides a unique set of capabilities in the form of robot behaviors and perception algorithms to enable scientists to explore different aspects of an ecosystem. Examples of these capabilities include low-altitude visual surveys, soundscape surveys, habitat characterization, and animal following. We demonstrate these capabilities by describing two field deployments on coral reefs in the US Virgin Islands. In the first deployment, we show that CUREE can identify the preferred habitat type of snapping shrimp in a reef through a combination of a visual survey, habitat characterization, and a soundscape survey. In the second deployment, we demonstrate CUREE's ability to follow arbitrary animals by separately following a barracuda and stingray for several minutes each in midwater and benthic environments, respectively.
description: 7 pages
Vibrations of Dimers of Mechanically Coupled Nanostructures: Analytical and Numerical Modeling
Creators: name: Lermé, Jean
name: Margueritat, Jérémie
name: Crut, Aurélien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The coupling effects affecting the vibrations of two close nanostructures (e.g., two metal nanoplates or nanospheres separated by a thin dielectric layer) may considerably alter their vibrational eigenfrequencies, as demonstrated by several recent experimental studies. In this work, we present theoretical investigations of these coupling processes based on a continuum mechanics approach, considering various systems composed by two identical nanostructures mechanically coupled by a spacer made of a different material and computing their eigenfrequencies as a function of the spacer thickness. We first discuss the vibrations of stacked slabs, a one-dimensional problem which can be treated analytically. The more complex configurations of dimers of rods or spheres coupled by a finite cylindrical spacer are then treated numerically. In all cases, the frequency shifts occurring for thin spacers can be simply interpreted as a modification of the boundary conditions of the problem as compared to the single nanostructure case, while those predicted near specific spacer thicknesses are ascribed to an avoided crossing effect, happening when the individual building blocks of the dimers (nanostructures and spacer) present common eigenfrequencies.
Inertia induces strong orientation fluctuations of non-spherical atmospheric particles
Creators: name: Bhowmick, T.
name: Seesing, J.
name: Gustavsson, K.
name: Guettler, J.
name: Wang, Y.
name: Pumir, A.
name: Mehlig, B.
name: Bagheri, G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The orientation of non-spherical particles in the atmosphere, such as volcanic ash and ice crystals, influences their residence times, and the radiative properties of the atmosphere. Here, we demonstrate experimentally that the orientation of heavy submillimeter spheroids settling in still air exhibits decaying oscillations, whereas it relaxes monotonically in liquids. Theoretical analysis shows that these oscillations are due to particle inertia, caused by the large particle-fluid mass-density ratio. This effect must be accounted for to model solid particles in the atmosphere.
description: Revised version, 9 pages, 4 figures, 1 table
Resolved Dwarf Galaxy Searches within ~5 Mpc with the Vera Rubin Observatory and Subaru Hyper Suprime-Cam
Creators: name: Mutlu-Pakdil, Burçin
name: Sand, David J.
name: Crnojević, Denija
name: Drlica-Wagner, Alex
name: Caldwell, Nelson
name: Guhathakurta, Puragra
name: Seth, Anil C.
name: Simon, Joshua D.
name: Strader, Jay
name: Toloba, Elisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a preview of the faint dwarf galaxy discoveries that will be possible with the Vera C. Rubin Observatory and Subaru Hyper Suprime-Cam in the next decade. In this work, we combine deep ground-based images from the Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) and extensive image simulations to investigate the recovery of faint, resolved dwarf galaxies in the Local Volume with a matched-filter technique. We adopt three fiducial distances - 1.5, 3.5, 5 Mpc, and quantitatively evaluate the effects on dwarf detection of varied stellar backgrounds, ellipticity, and Milky Way foreground contamination and extinction. We show that our matched-filter method is powerful for identifying both compact and extended systems, and near-future surveys will be able to probe at least ~4.5 mag below the tip of the red giant branch (TRGB) for a distance of up to 1.5 Mpc, and ~2 mag below the TRGB at 5 Mpc. This will push the discovery frontier for resolved dwarf galaxies to fainter magnitudes, lower surface brightnesses, and larger distances. Our simulations show the secure census of dwarf galaxies down to $M_{V}$$\approx$-5, -7, -8, will be soon within reach, out to 1.5 Mpc, 3.5 Mpc, and 5 Mpc, respectively, allowing us to quantify the statistical fluctuations in satellite abundances around hosts, and parse environmental effects as a function of host properties.
description: Submitted to AAS journals. Comments are welcome
New bounds in the discrete analogue of Minkowski's second theorem
Creators: name: Tointon, Matthew
Publisher: name: arXiv
Year: 2023
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We adapt an argument of Tao and Vu to show that if $λ_1\le\cdots\leλ_d$ are the successive minima of an origin-symmetric convex body $K$ with respect to some lattice $Λ<\mathbb{R}^d$, and if we set $k=\max\{j:λ_j\le1\}$, then $K$ contains at most $2^k(1+\frac{λ_k}2)^k/λ_1\cdotsλ_k$ lattice points. This provides improved bounds in a conjecture of Betke, Henk and Wills (1993), and verifies that conjecture asymptotically as $λ_k\to0$. We also obtain a similar result without the symmetry assumption.
description: 6 pages
Analyse structurale de la spatialité dans l’oeuvre théâtrale de Jacques Audiberti
Creators: name: Martinuzzi, Bruna
Publisher: name: University of British Columbia
Year: 2010

description: Le but de la presente these sera dlanalyser la s. patialite dans l'oeuvre the Strale de Jacques Audiberti, On a rarement souligne l'importance du fonctionnement de l'es-pace dans le theatre d'Audiberti. Pourtant, des sa premiere piece, L'Ampelour, l'auteur accorde une grande importance non seulement aux decors, mais aussi aux objets, aux sons, aux odeurs, aux couleurs, bref a tous les signes de la spatialite, L'analyse suivra, en grande partie, les etapes preconisees par Anne Ubersfeld dans ses ouvrages intitules Live le theatre et L'Eaole du speatateur. L'objet-signe occupera une place centrale dans notre these et sera analyse dans tous ses details. On verra que l'objet dans le theatre d'Audiberti est souvent polysemique: sa matiere, sa couleur, sa forme, son age, etc. sont des semes connotatifs. On analysera done non seulement les objets-signes qui appara l'issent dans une fo notion spatiale d'objet decoratif et emblematique, mais aussi ceux qui apparaissent dans des metaphores, la metaphor.e etant une figure.fondamentale qui mene a un travail de l'espace. Notre enquete envisagera aussi les traits semantises des espaces en oppositions binaires, par exemple, vertical/ horizontal, haut/bas, grand/petit, fragile/solide. II existe des elements apatiaux qui sont destines a Stre represents concretement sur la scene,et d'autres qui se rapportent seulement a un hors-scene imaginaire. On examiners ces deux couches qui, pour nous, constitueront l'espace global du texte, Cette distinction s'applique egalement aux objets dont on analysera ceux qui figurent sur la scene a in si que ceux dotes d'un simple statut scriptural. Les autres elements etudies ici. incluent les sons, les odeurs, les jeux de lumiere, les nombres, les fleurs, la nature, les parties du corps humain, les animaux, les cadres geographiques et llespace vide. En outre, on tentera de -tablir si il y a un rapport entre Involution des sentiments des personnages et leur deplacement d'un lieu a l'autre, et on examinera les liens existant entre le decor et la psychologie des personnages. Ce qui emerge final ement de cette analyse de l 'espace est que le fonetionnement de la spatialite dans le theatre d'Audiberti est etroitement lie aux themes des pieces dont le principal est le dualisme du bien et du mal. Dans l'univers satanique d'Audiberti, le bien, quand il existe, est toujours confront avec le mal qui triomphe. Cette lutte interminable entre le bien et le mal constitue l'epine dorsale de l'oeuvre theatrale d'Audiberti.
Peter Maser, "Berathung der Armuth". Das soziale Wirken des Barons Hans Ernst von Kottwitz zwischen Aufklärung und Erweckungsbewegung in Berlin und Schlesien
Creators: name: Hutter-Wolandt, Ulrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 2 (1995)
Fully closed maps and non-metrizable higher-dimensional Anderson-Choquet continua
Creators: name: Krzempek, Jerzy
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54F15, 54F45

description: Fedorchuk's fully closed (continuous) maps and resolutions are applied in constructions of non-metrizable higher-dimensional analogues of Anderson, Choquet, and Cook's continua. Certain theorems on dimension-lowering maps are proved for inductive dimensions and fully closed maps from spaces that need not be hereditarily normal, and some examples of continua have non-coinciding dimensions.
description: 20 pages. Minor changes, corrected typos. This IS NOT the final version of the paper. The final version appeared in Colloquium Mathematicum