cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dark energy and formation of classical scalar fields
Creators: name: Ziaeepour, Houri
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a quintessence model for the dark energy in which the quintessence scalar field is produced by the decay of a super heavy dark matter and gradually condensate to a classical scalar field. This model can explain both the smallness and the latest observations by WMAP for the equation of state of the dark energy which has $w \sim -1.06$. We review both classical and field theoretical treatment of this model and briefly explain the most important parameters for obtaining the observed characteristic of the dark energy.
description: 7 pages,2 figures. Proceedings of Einstein 2005 Conference
Monopole annihilation in cosmic necklaces
Creators: name: Blanco-Pillado, Jose J.
name: Olum, Ken D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A sequence of two symmetry breaking transitions in the early universe may produce monopoles whose flux is confined into two strings each, which thus assemble into "necklaces" with monopoles as beads. Such "cosmic necklaces" have been proposed as a source of ultra-high-energy cosmic rays. We analyze the evolution of these systems and show that essentially all monopoles annihilate or leave the string at early times, after which cosmic necklaces evolve in a similar way to a network of ordinary cosmic strings. We investigate several modifications to the basic picture, but in nearly all cases we find that too few monopoles remain on the necklaces to produce any observable cosmic rays. There may be a small window for superconducting condensates to prevent annihilations, but only if both the string and the condensate scale are very high.
description: 17 pages, 4 figures. Major revision discussing many additional scenarios.
Confirming $U(1)_{L_μ-L_τ}$ as a solution for $(g-2)_μ$ with neutrinos
Creators: name: Amaral, D. W. P.
name: Cerdeno, D. G.
name: Cheek, A.
name: Foldenauer, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent measurement of the muon anomalous magnetic moment by the Fermilab E989 experiment, when combined with the previous result at BNL, has confirmed the tension with the SM prediction at $4.2\,σ$ CL, strengthening the motivation for new physics in the leptonic sector. Among the different particle physics models that could account for such an excess, a gauged $U(1)_{L_μ-L_τ}$ stands out for its simplicity. In this article, we explore how the combination of data from different future probes can help identify the nature of the new physics behind the muon anomalous magnetic moment. In particular, we contrast $U(1)_{L_μ-L_τ}$ with an effective $U(1)_{L_μ}$-type model. We first show that muon fixed target experiments (such as NA64$μ$) will be able to measure the coupling of the hidden photon to the muon sector in the region compatible with $(g-2)_μ$, and will have some sensitivity to the hidden photon's mass. We then study how experiments looking for coherent elastic neutrino-nucleus scattering (CE$ν$NS) at spallation sources will provide crucial additional information on the kinetic mixing of the hidden photon. When combined with NA64$μ$ results, the exclusion limits (or reconstructed regions) of future CE$ν$NS detectors will also allow for a better measurement of the mediator mass. Finally, the observation of nuclear recoils from solar neutrinos in dark matter direct detection experiments will provide unique information about the coupling of the hidden photon to the tau sector. The signal expected for $U(1)_{L_μ-L_τ}$ is larger than for $U(1)_{L_μ}$ with the same kinetic mixing, and future multi-ton liquid xenon proposals (such as DARWIN) have the potential to confirm the former over the latter.
description: 26 pages, 14 figures, 2 tables; v2: updated references, added comment on flavour bounds for $U(1)_{L_\mu}$, minor errors fixed; v3: matches journal published version
BUILDING TITO LAND: HOW THE UNITED STATES LEARNED TO STOP WORRYING AND LIVE WITH AIDING COMMUNIST YUGOSLAVIA, 1948-1963
Creators: name: Milojevic, Louie
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 440804
subject: Defence studies
classificationCode: 440808
subject: International relations

description: From
Festival representation beyond words : the Stuttgart baptism of 1616
Creators: name: Thomsett, Andrea Irma Irene
Publisher: name: University of British Columbia
Year: 2010

description: The representation of a Stuttgart court festival in a fascinating book of prints has received no art historical attention. The cultural production of German lands in a complex and obscure time described by one historian as being particularly bereft of "textbook facts", has not elicited much scholarly interest. In the seventeenth century before confessional disputes within the Holy Roman Empire of the German Nation turned into armed conflict, small German territorial courts modelled themselves on and assumed the courtly style of the larger European courts. The Stuttgart baptism of 1616 presents an interesting case study of the use of a courtly spectacle by a secondary court at a time of great instability. The baptism festival served as a stage to display an alliance of some German Protestant princes that held a promise of international support for the Protestant cause. The Wurttemberg court commissioned lengthy texts and a large number of engravings to represent the event. This study will address the contributions made by printed images to the festival program. The key documents for this study are the texts which complement and at times diverge from the visual representation. The differences between the visual and textual material will serve to locate the function of the visual representation of a festival held at a time of impending conflict. The triumphal procession format of the engravings discloses a strategy of disenfranchisement of a powerful parliament while it serves to assert the rank of the court within and outside the German empire. The complex amalgams of imagery that are interspersed in the paper procession allude, I suggest, to the problems presented to the Wurttemberg court by an uneasy alliance of Protestant courts within the empire. The engravings served to encode references to problematic issues such as the survival of the Holy Roman Empire, the rights of Protestant territorial princes to form an alliance and the hopes for outside help for the Protestant cause.
A Subjective and Objective Study of Space-Time Subsampled Video Quality
Creators: name: Lee, Dae Yeol
name: Paul, Somdyuti
name: Bampis, Christos G.
name: Ko, Hyunsuk
name: Kim, Jongho
name: Jeong, Se Yoon
name: Homan, Blake
name: Bovik, Alan C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Video dimensions are continuously increasing to provide more realistic and immersive experiences to global streaming and social media viewers. However, increments in video parameters such as spatial resolution and frame rate are inevitably associated with larger data volumes. Transmitting increasingly voluminous videos through limited bandwidth networks in a perceptually optimal way is a current challenge affecting billions of viewers. One recent practice adopted by video service providers is space-time resolution adaptation in conjunction with video compression. Consequently, it is important to understand how different levels of space-time subsampling and compression affect the perceptual quality of videos. Towards making progress in this direction, we constructed a large new resource, called the ETRI-LIVE Space-Time Subsampled Video Quality (ETRI-LIVE STSVQ) database, containing 437 videos generated by applying various levels of combined space-time subsampling and video compression on 15 diverse video contents. We also conducted a large-scale human study on the new dataset, collecting about 15,000 subjective judgments of video quality. We provide a rate-distortion analysis of the collected subjective scores, enabling us to investigate the perceptual impact of space-time subsampling at different bit rates. We also evaluated and compared the performance of leading video quality models on the new database.
Pricing methods for $α$-quantile and perpetual early exercise options based on Spitzer identities
Creators: name: Phelan, Carolyn E.
name: Marazzina, Daniele
name: Germano, Guido
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Finance (q-fin.CP)
subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business
subject: G.1.9; G.3; J.4
subject: 60E10, 60G51, 91-08, 91-10, 91G20, 91G50, 91G60

description: We present new numerical schemes for pricing perpetual Bermudan and American options as well as $α$-quantile options. This includes a new direct calculation of the optimal exercise barrier for early-exercise options. Our approach is based on the Spitzer identities for general Lévy processes and on the Wiener-Hopf method. Our direct calculation of the price of $α$-quantile options combines for the first time the Dassios-Port-Wendel identity and the Spitzer identities for the extrema of processes. Our results show that the new pricing methods provide excellent error convergence with respect to computational time when implemented with a range of Lévy processes.
description: 29 pages, 14 figures, 5 tables
Additional file 1 of Human placenta mesenchymal stem cell-derived exosomes delay H2O2-induced aging in mouse cholangioids
Creators: name: Chen, Wenyi
name: Zhu, Jiaqi
name: Lin, Feiyan
name: Xu, Yanping
name: Feng, Bing
name: Feng, Xudong
name: Sheng, Xinyu
name: Shi, Xiaowei
name: Pan, Qiaoling
name: Yang, Jinfeng
name: Yu, Jiong
name: Li, Lanjuan
name: Cao, Hongcui
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 1 Supplementary Material.
Dielectric and thermal relaxation in the energy landscape
Creators: name: Buchenau, U.
name: Zorn, R.
name: Ohl, M.
name: Wischnewski, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We derive an energy landscape interpretation of dielectric relaxation times in undercooled liquids, comparing it to the traditional Debye and Gemant-DiMarzio-Bishop pictures. The interaction between different local structural rearrangements in the energy landscape explains qualitatively the recently observed splitting of the flow process into an initial and a final stage. The initial mechanical relaxation stage is attributed to hopping processes, the final thermal or structural relaxation stage to the decay of the local double-well potentials. The energy landscape concept provides an explanation for the equality of thermal and dielectric relaxation times. The equality itself is once more demonstrated on the basis of literature data for salol.
description: 7 pages, 3 figures, 41 references, Workshop Disordered Systems, Molveno 2006, submitted to Philosophical Magazine
Charged current anti-neutrino reactions from $^{12}$C at MiniBooNE energies
Creators: name: Athar, M. Sajjad
name: Ahmad, Shakeb
name: Singh, S. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A study of charged current induced anti-neutrino interactions from nuclei has been done for the intermediate energy ($<2$GeV) anti-neutrinos and applied to $^{12}$C, relevant for ongoing experiment by MiniBooNE collaboration. The calculations have been done for the quasielastic and inelastic lepton production as well as for the incoherent and the coherent pion production processes. The calculations are done in local density approximation. In the case of the quasielastic reaction the effects of Pauli blocking, Fermi motion effects, renormalization of weak transition strengths in nuclear medium and the Coulomb distortion of the outgoing lepton have been taken into account. For the inelastic processes the calculations have been done in the $Δ$ dominance model and take into account the effect of Pauli blocking, Fermi motion of the nucleon and renormalization of $Δ$ properties in a nuclear medium. The effect of final state interactions of pions is also taken into account. The numerical results for the total cross sections for the charged current quasielastic scattering and incoherent pion production processes are compared with earlier experimental results available in Freon and Freon-Propane. It is found that nuclear medium effects give strong reduction in the cross sections leading to satisfactory agreement with the available data.
description: 24 pages, 25 figures
Poisson bracket operator
Creators: name: Koide, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We introduce the Poisson bracket operator which is an alternative quantum counterpart of the Poisson bracket. This operator is defined using the operator derivative formulated in quantum analysis and is equivalent to the Poisson bracket in the classical limit. Using this, we derive the quantum canonical equation which describes the time evolution of operators. In the standard applications of quantum mechanics, the quantum canonical equation is equivalent to the Heisenberg equation. At the same time, this equation is applicable to c-number canonical variables and then coincides with the canonical equation in classical mechanics. Therefore the Poisson bracket operator enables us to describe classical and quantum behaviors in a unified way. Moreover, the quantum canonical equation is applicable to non-standard system where the Heisenberg equation is not defined. As an example, we consider the application to the system where a c-number and a q-number particles coexist. The derived dynamics satisfies the Ehrenfest theorem and the energy and momentum conservations.
description: 25 pages, no figure, the discussions of the Wigner function and Lindblad equation and references were added. Accepted for publication in Phys. Rev. A
Continuity equations for general matter: applications in numerical relativity
Creators: name: Clough, Katy
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Due to the absence of symmetries under time and spatial translations in a general curved spacetime, the energy and momentum of matter is not conserved as it is in flat space. This means, for example, that the flux of matter energy through a surface is in general not balanced by an equal increase in the energy of the matter contained within the enclosed volume - there is an additional "source" resulting from the curvature of spacetime acting on the matter (and vice versa). One can calculate this source term and reconcile the flux and energy accumulation over time in an arbitrary volume, although a foliation of the spacetime must be chosen, making the quantities inherently coordinate dependent. Despite this dependence, these quantities are practically useful in numerical relativity simulations for a number of reasons. We provide expressions for general matter sources in a form appropriate for implementation in the ADM decomposition, and discuss several applications in simulations of compact object dynamics and cosmology.
description: Updated for published version, fixed minus sign in Fig. 3
59Co, 23Na, and 1H NMR Studies of Double-Layer Hydrated Superconductors NaxCoO2-yH2O
Creators: name: Itoh, Y.
name: Ohta, H.
name: Michioka, C.
name: Kato, M.
name: Yoshimura, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present our NMR studies of double-layer hydrated cobalt oxides NaxCoO2-yH2O (x ~ 0.35, y ~ 1.3) with various Tc = 0 - 4.8 K and magnetic transition temperatures. High-resolution $^{1}$H NMR spectrum served as an evidence for the existence of H$_{3}$O$^{+}$ oxonium ions. $^{23}$Na nuclear spin-lattice relaxation rates served to detect local field fluctuations sensitive to Tc. $^{59}$Co nuclear quadrupole resonance (NQR) spectra served to classify the various Tc samples. From the classification by $^{59}$Co NQR frequency, the double-layer hydrated compounds were found to have two superconducting phases closely located to a magnetic phase. In the normal state and at a magnetic field in the $ab$-plane, two $^{59}$Co NMR signals with different Knight shifts and different $^{59}$Co nuclear spin-lattice relaxation times $^{59}T_{1}$ were observed. The two $^{59}$Co NMR signals suggest magnetic disproportionation of two Co sites or in-plane (XY) anisotropy of a single Co site. Non Korringa behavior and power law behavior in zero-field NQR 1/$^{59}T_{1}$ above and below Tc suggest non-Fermi liquid and unconventional superconductivity.
description: 12 pages, 7 figures, Submitted to DPG spring meeting at Regensburg, March 2007
D5.3 Delivered trainings on research management and administration skills in the third year
Creators: name: Djisalov, Mila
name: Mladenović, Minja
name: Savić, Slavica
name: Knežević, Nikola
Publisher: name: Zenodo
Year: 2024

description: This deliverable summarizes the trainings conducted in the third year of the NANOFACTS project, which aims to enhance research excellence at the BioSense Institute through the development of nanomaterials for cancer therapy, imaging, and diagnosis, as well as improving biosensor technology for cancer detection. The trainings addressed various aspects of research management and administration (RMA), including project proposal writing, management, implementation, and dissemination, ensuring they are relevant and valuable for researchers at the BioSense Institute.
Time resolution and efficiency of SPADs and SiPMs for photons and charged particles
Creators: name: Riegler, Werner
name: Windischhofer, Philipp
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We give an analytic treatment of the time resolution and efficiency of Single Photon Avalanche Diodes (SPADs) and Silicon Photomultipliers (SiPMs). We provide closed-form expressions for structures with uniform electric fields and efficient numerical prescriptions for arbitrary electric field configurations. We discuss the sensor performance for single photon detection and also for charged particle detection.
Additional file 3 of Human placenta mesenchymal stem cell-derived exosomes delay H2O2-induced aging in mouse cholangioids
Creators: name: Chen, Wenyi
name: Zhu, Jiaqi
name: Lin, Feiyan
name: Xu, Yanping
name: Feng, Bing
name: Feng, Xudong
name: Sheng, Xinyu
name: Shi, Xiaowei
name: Pan, Qiaoling
name: Yang, Jinfeng
name: Yu, Jiong
name: Li, Lanjuan
name: Cao, Hongcui
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 3: Table S2. Primer sequences used in this study.
Prehistoric Northwest Coast art : a stylistic analysis of the archaeological record
Creators: name: Holm, Margaret Ann
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is a stylistic study of the prehistoric art record from the Northwest Coast of North America. Its purpose is three-fold: to describe the spatial and temporal variation in the stylistic attributes of prehistoric art; to evaluate theories on the evolution of the Northwest Coast art tradition; and to comment on the possible factors behind variation in the prehistoric art record. This study examines stylistic attributes related to representational imagery, concentrating on five variables: decorated forms, carving techniques, design elements, design principles, and motifs. The core sample consists of anthropomorphic and zoomorphic images from dated archaeological contexts; a total of 242 artifacts from 58 sites are examined. The material is presented in chronological order corresponding to the Gulf of Georgia prehistoric cultural sequence. The major finding of this study is that by the end of the Locarno Beach phase or the beginning of the Marpole phase the essential character of the Northwest Coast art style had developed. There are new developments in the late period, but the evidence presented suggests a previously undocumented stylistic continuity from the late Locarno Beach phase to historic Coast Salish art with no decline in quality or productivity. This study indicates that, as far back as the record extends, three-dimensional, naturalistic forms and two-dimensional incising and engraving techniques have equal antiquity. From the Locarno Beach phase onward the flat, engraved style and the three-dimensional sculpture style developed together; the formline concept developed very early out of the raised, positive lines created by deep engraving in antler.
Causes of dieback of Douglas-fir in the interior of B.C.
Creators: name: Reich, Richard William
Publisher: name: University of British Columbia
Year: 2010

description: Frost damage to sapling size plantation Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco.] in the central interior of B.C. was identified as the major cause of dieback and canker through tree dissections. Prominent frost rings in the wood and frost damage to buds and shoots corresponded to the dates of dieback initiation and canker events throughout the history of the plantations. Frost rings and frost cankers were reproducible using an artificial freezing technique. Symptomatic frost-damaged buds and elongating shoots were described for Douglas-fir, white spruce [Picea glauca (Moench) Voss] and subalpine fir [Abies lasiocarpa (Hook.) Nutt.]. The effect of growing season frost was most noticeable on early flushing trees. Frost and dieback damage was most severe on concave and flat landforms, which are conducive to cold air pooling on nights with strong radiative cooling. Several pathogens isolated from recently killed stems were identified from fruiting bodies and culture. Leucocytospora kunzei (Sacc.) Urban was the pathogen most commonly isolated from the edge of expanding cankers and progressive dieback margins. Sclerophoma semenospora Funk was commonly found fruiting on dead stems and leaders killed by frost or by mechanical means. Cinara pseudotaxifoliae Wilson feeding caused latent cankers on one year old leaders of Douglas-fir, which are thought to be activated by frost. Boron levels of both healthy and severely affected trees were in the intermediate range, and were not considered to play an important role in frost or pathogen susceptibility for Douglas-fir in the interior.
Royidris diminuta Bolton & Fisher, sp. n.
Creators: name: Bolton, Barry
name: Fisher, Brian
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Royidris
Royidris diminuta

description: Royidris diminuta Bolton & Fisher sp. n.
(Figs 48-50, Map 138)
WORKER (holotype in parentheses). TL 2.8-3.0 (3.0), HL 0.66-0.73 (0.72), HW 0.50-0.58 (0.58), CI 76-81 (81), SL 0.66-0.73 (0.70), SI 121-130 (121), PW 0.34-0.38 (0.37), WL 0.88-0.96 (0.96) (7 measured). EL 0.16-0.18 (EL/HW 0.30-0.32). MfL 0.66-0.76 (MfL/HW 1.25-1.33, MfL/MfH 3.36-3.80).
Matching the description of notorthotenes, and with critical indices falling within the same ranges, but diminuta much smaller in absolute measurements. For comparison of measurements see Table 2.
QUEEN (gyne). Alate when virgin. Very much larger than the worker. TL 6.8, HL 1.25, HW 1.21, CI 97, SL 1.04, SI 86, PW 0.90, WL 2.08, EL 0.36 (EL/HW 0.30), MfL 1.22 (MfL/HW 1.01, MfL/MfH 4.36) (1 measured).
MALE: unknown.
Holotype worker (top specimen of three on pin), Madagascar: Prov. Toliara, Mahafaly Plateau, 6.2 km. 74° ENE Itampolo, 24°39.2'S, 43°59.8'E, 80 m., 21-25.ii.2002, BLF 5814, CASENT0002420, under stone, spiny forest/thicket (Fisher et al.) (CASC).
Paratypes. 2 workers on same pin as holotype, 2 workers with same data but CASENT0002421, 1 worker with same data but CASENT0009802 (CASC).
This small form is separated from notorthotenes with some reservations. In terms of general morphology and critical indices, workers of the two are similar, but in terms of absolute dimensions there is a distinct and persistent gap between them in the ranges of all measurements, with no trace of intermediates. No species of Royidris show any signs of worker dimorphism, but the possibility that the diminuta workers represent the undersized first brood of new foundress queens of notorthotenes cannot be entirely ruled out. An alternative hypothesis, that diminuta, etiolata and notorthotenes constitute a single species, results in a monomorphic species with SI 115-158, an exceptionally broad range. All three species are found in sympatry in the Mahafaly Plateau.
Both series of diminuta, which nests under stones in spiny forest, were included under notorthotenes by Heterick (2006).
Non-paratypic material examined. Madagascar: Prov. Toliara, Mahafaly Plateau, ENE Itampolo (Fisher et al.).
description: Published as part of Bolton, Barry & Fisher, Brian, 2014, The Madagascan endemic myrmicine ants related to Eutetramorium (Hymenoptera: Formicidae): taxonomy of the genera Eutetramorium Emery, Malagidris nom. n., Myrmisaraka gen. n., Royidris gen. n., and Vitsika gen. n .., pp. 1-99 in Zootaxa 3791 (1) on pages 50-52, DOI: 10.11646/zootaxa.3791.1.1
Metal-insulator transition and intermediate phases in the kagome lattice Hubbard model
Creators: name: Sun, Rong-Yang
name: Zhu, Zheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the recent discovery of metallic kagome lattice materials, AV$_{3}$Sb$_{5}$ (A=K, Rb, Cs), we investigate the ground state of the half-filled kagome lattice Hubbard model by employing the density-matrix renormalization group (DMRG) method. We identify a metal-insulator transition around $U \thicksim U_{c1}$ and four distinct phases as a function of $U/t$ on narrower cylinders, including a metallic phase at $U < U_{c1}$, two insulating intermediate phases: a translational symmetry breaking phase at $U_{c1} < U < U_{c2}$ and a quantum spin liquid phase at $U_{c2} < U < U_{c3}$, and the kagome antiferromagnetic phase at $U>U_{c3}$. We confirm that the translational symmetry breaking phase is robust for wider cylinders, while the quantum spin liquid phase is smoothly connected to the kagome antiferromagnetic phase with increasing the system width. Moreover, our numerical observations indicate a continuous metal-insulator transition at $U_{c1}$, whose nature is consistent with Slater's transition scenario. The magnetic phase transition between two insulating intermediate phases at $U_{c2}$ is first order. Our findings may provide insights into exotic kagome lattice materials.
description: 9 pages, 12 figures
Rotating Boson and Boson-Fermion Stars
Creators: name: de Sousa, Claudio M. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Some recent results on rotating self-gravitating configurations composed with Bosons and Fermions are reported. Given a star composed of both Bosons and Fermions without interaction, it is shown that it is possible to obtain stable slowly rotating configurations by using the same perturbative relativistic method that usually describes neutron stars.
description: To appear in the proceedings of 10th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories (MG X MMIII), Rio de Janeiro, Brazil, 20-26 Jul 2003
Additional file 4 of Human placenta mesenchymal stem cell-derived exosomes delay H2O2-induced aging in mouse cholangioids
Creators: name: Chen, Wenyi
name: Zhu, Jiaqi
name: Lin, Feiyan
name: Xu, Yanping
name: Feng, Bing
name: Feng, Xudong
name: Sheng, Xinyu
name: Shi, Xiaowei
name: Pan, Qiaoling
name: Yang, Jinfeng
name: Yu, Jiong
name: Li, Lanjuan
name: Cao, Hongcui
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 4: Figure S1. Characteristics of organoids in H2O2-induced senescence. (a) Viability / cytotoxicity assay of organoids before oxidative stress induction. Almost all the organoids were alive (green), with a small number of single cells dead (red) (scale bar, 100 μm). (b) Typical appearance of organoids after 120 h H2O2 induction, observed by light microscopy. Cells scattered and aggregated inside the lumen of organoids (scale bar, 200 μm).
An XMM-Newton view of the young open cluster NGC 6231 III. Optically faint X-ray sources
Creators: name: Sana, H.
name: Rauw, G.
name: Sung, H.
name: Gosset, E.
name: Vreux, J. -M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the properties of the X-ray sources with faint optical counterparts in the very young open cluster NGC 6231. From their positions in the H-R diagram, we find that the bulk of these objects probably consists of low-mass pre-main sequence stars with masses in the range 0.3 to 3.0 M$_{\odot}$. The age distribution of these objects indicates that low-mass star formation in NGC 6231 started more than 10 Myr ago and culminated in a starburst-like event about 1 to 4 Myr ago when the bulk of the low-mass PMS stars as well as the massive cluster members formed. We find no evidence for a spatial age gradient that could point towards a sequential star formation process. Only a few X-ray sources have counterparts with a reddening exceeding the average value of the cluster or with infrared colours indicating the presence of a moderate near-IR excess. The X-ray spectra of the brightest PMS sources are best fitted by rather hard thermal plasma models and a significant fraction of these sources display flares in their light curve. The X-ray brightest flaring sources have decay times between 2 and 16 ks. The X-ray selected PMS stars in NGC 6231 have $\log{L_{\rm X}/L_{\rm bol}}$ values that increase strongly with decreasing bolometric luminosity and can reach a saturation level ($\log{L_{\rm X}/L_{\rm bol}} \sim -2.4$) for non-flaring sources and even more extreme values during flares.
description: Accepted by MNRAS, 14pages, 19 figures
Rossby waves in "shallow water" magnetohydrodynamics
Creators: name: Zaqarashvili, T. V.
name: Oliver, R.
name: Ballester, J. L.
name: Shergelashvili, B. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The influence of a toroidal magnetic field on the dynamics of Rossby waves in a thin layer of ideal conductive fluid on a rotating sphere is studied in the "shallow water" magnetohydrodynamic approximation for the first time. Dispersion relations for magnetic Rossby waves are derived analytically in Cartesian and spherical coordinates. It is shown that the magnetic field causes the splitting of low order (long wavelength) Rossby waves into two different modes, here denoted fast and slow {\em magnetic Rossby waves}. The high frequency mode (the fast magnetic Rossby mode) corresponds to an ordinary hydrodynamic Rossby wave slightly modified by the magnetic field, while the low frequency mode (the slow magnetic Rossby mode) has new and interesting properties since its frequency is significantly smaller than that of the same harmonics of pure Rossby and Alfv{é}n waves.
Additional file 6 of Human placenta mesenchymal stem cell-derived exosomes delay H2O2-induced aging in mouse cholangioids
Creators: name: Chen, Wenyi
name: Zhu, Jiaqi
name: Lin, Feiyan
name: Xu, Yanping
name: Feng, Bing
name: Feng, Xudong
name: Sheng, Xinyu
name: Shi, Xiaowei
name: Pan, Qiaoling
name: Yang, Jinfeng
name: Yu, Jiong
name: Li, Lanjuan
name: Cao, Hongcui
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 6: Figure S3. hPMSCs culture and identification. (a) Picture of hPMSCs captured by light microscope: classic spindle-shaped morphology (scar bar, 100 μm); (b) Alizarin red S staining of hPMSCs on day 21(scar bar, 100 μm); (c) Oil red O staining of hPMSCs on day 28 (scar bar, 100 μm). (d) Flow cytometry analysis of surface antigens on hPMSCs (CD73, CD90, CD105, CD11b, CD19, CD34, CD45 and HLA-DR).
Magnetic effects on the phase transitions in unconventional superconductors
Creators: name: Uzunov, Dimo I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Astrophysics (astro-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A new critical behavior in unconventional superconductors and superfluids is established and described by the Wilson-Fisher renormalization-group method. For certain symmetries of order a new type of fluctuation-driven first order phase transitions at finite and zero temperature are predicted. The results can be applied to a wide class of ferromagnetic superconductive and superfluid systems, in particular, to itinerant ferromagnets as UGe_2 and URhGe.
description: 10 pages, 3 figures; minor style changes, title change
D6.1 Plan for the Exploitation and Dissemination of Results (PEDR)
Creators: name: Mladenović, Minja
name: Janković, Nikolina
name: Trajković, Milica
name: Živojević, Kristina
name: Knežević, Nikola
Publisher: name: Zenodo
Year: 2024

description: The Plan for the Exploitation and Dissemination of Results (PEDR) focuses on designing effective dissemination tools and activities to engage target groups, including the academic community, clinicians, cancer patient advocacy groups, industry, and the general public, from the project's outset.
Improved Gamma-Ray Point Source Quantification in Three Dimensions by Modeling Attenuation in the Scene
Creators: name: Bandstra, M. S.
name: Hellfeld, D.
name: Vavrek, J. R.
name: Quiter, B. J.
name: Meehan, K.
name: Barton, P. J.
name: Cates, J. W.
name: Moran, A.
name: Negut, V.
name: Pavlovsky, R.
name: Joshi, T. H. Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Using a series of detector measurements taken at different locations to localize a source of radiation is a well-studied problem. The source of radiation is sometimes constrained to a single point-like source, in which case the location of the point source can be found using techniques such as maximum likelihood. Recent advancements have shown the ability to locate point sources in 2D and even 3D, but few have studied the effect of intervening material on the problem. In this work we examine gamma-ray data taken from a freely moving system and develop voxelized 3-D models of the scene using data from the onboard LiDAR. Ray casting is used to compute the distance each gamma ray travels through the scene material, which is then used to calculate attenuation assuming a single attenuation coefficient for solids within the geometry. Parameter estimation using maximum likelihood is performed to simultaneously find the attenuation coefficient, source activity, and source position that best match the data. Using a simulation, we validate the ability of this method to reconstruct the true location and activity of a source, along with the true attenuation coefficient of the structure it is inside, and then we apply the method to measured data with sources and find good agreement.
description: 10 pages, 8 figures, accepted for publication in IEEE Transactions on Nuclear Science
BEHAVE: Behavior-Aware, Intelligent and Fair Resource Management for Heterogeneous Edge-IoT Systems
Creators: name: Alqerm, Ismail
name: Wang, Jianyu
name: Pan, Jianli
name: Liu, Yuanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Edge computing is an emerging solution to support the future Internet of Things (IoT) applications that are delay-sensitive, processing-intensive or that require closer intelligence. Machine intelligence and data-driven approaches are envisioned to build future Edge-IoT systems that satisfy IoT devices' demands for edge resources. However, significant challenges and technical barriers exist which complicate the resource management for such Edge-IoT systems. IoT devices running various applications can demonstrate a wide range of behaviors in the devices' resource demand that are extremely difficult to manage. In addition, the management of multidimensional resources fairly and efficiently by the edge in such a setting is a challenging task. In this paper, we develop a novel data-driven resource management framework named BEHAVE that intelligently and fairly allocates edge resources to heterogeneous IoT devices with consideration of their behavior of resource demand (BRD). BEHAVE aims to holistically address the management technical barriers by: 1) building an efficient scheme for modeling and assessment of the BRD of IoT devices based on their resource requests and resource usage; 2) expanding a new Rational, Fair, and Truthful Resource Allocation (RFTA) model that binds the devices' BRD and resource allocation to achieve fair allocation and encourage truthfulness in resource demand; and 3) developing an enhanced deep reinforcement learning (EDRL) scheme to achieve the RFTA goals. The evaluation results demonstrate BEHAVE's capability to analyze the IoT devices' BRD and adjust its resource management policy accordingly.
Smash products for secondary homotopy groups
Creators: name: Baues, Hans-Joachim
name: Muro, Fernando
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 55Q15; 55Q35; 55S45

description: We construct a smash product operation on secondary homotopy groups yielding the structure of a lax symmetric monoidal functor. Applications on cup-one products, Toda brackets and Whitehead products are considered. In particular we prove a formula for the crossed effect of the cup-one product operation on unstable homotopy groups of spheres which was claimed by Barratt-Jones-Mahowald.
description: We give a clearer description of the tensor product of symmetric sequences of quadratic pair modules
Revisiting the mass- and radius-luminosity relations for FGK main-sequence stars
Creators: name: Fernandes, João
name: Gafeira, Ricardo
name: Andersen, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Scaling relations are very useful tools for estimating unknown stellar quantities. Within this framework, eclipsing binaries are ideal for this goal because their mass and radius are known with a very good level of accuracy, leading to improved constraints on the models. We aim to provide empirical relations for the mass and radius as function of luminosity, metallicity, and age. We investigate, in particular, the impact of metallicity and age on those relations. We used a multi-dimensional fit approach based on the data from DEBCat, an updated catalogue of eclipsing binary observations such as mass, radius, luminosity, effective temperature, gravity, and metallicity. We used the {PARAM web interface for the Bayesian estimation of stellar parameters, along with} the stellar evolutionary code MESA to estimate the binary age, assuming a coeval hypothesis for both members. We derived the mass and radius-luminosity-metallicity-age relations using 56 stars, {with metallicity and mass in the range -0.34
description: 8 pages, 9 figures, Accepted for publication on Astronomy and Astrophysics
Additional file 2 of Human placenta mesenchymal stem cell-derived exosomes delay H2O2-induced aging in mouse cholangioids
Creators: name: Chen, Wenyi
name: Zhu, Jiaqi
name: Lin, Feiyan
name: Xu, Yanping
name: Feng, Bing
name: Feng, Xudong
name: Sheng, Xinyu
name: Shi, Xiaowei
name: Pan, Qiaoling
name: Yang, Jinfeng
name: Yu, Jiong
name: Li, Lanjuan
name: Cao, Hongcui
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 2: Table S1. Regents of organoids analysis.
Real analyticity of Hausdorff dimension for expanding rational semigroups
Creators: name: Sumi, Hiroki
name: Urbanski, Mariusz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37F35 (Primary); 37F15 (Secondary)

description: We consider the dynamics of expanding semigroups generated by finitely many rational maps on the Riemann sphere. We show that for an analytic family of such semigroups, the Bowen parameter function is real-analytic and plurisubharmonic. Combining this with a result obtained by the first author, we show that if for each semigroup of such an analytic family of expanding semigroups satisfies the open set condition, then the function of the Hausdorff dimension of the Julia set is real-analytic and plurisubharmonic. Moreover, we provide an extensive collection of classes of examples of analytic families of semigroups satisfying all the above conditions and we analyze in detail the corresponding Bowen's parameters and Hausdorff dimension function.
description: 33 pages, 2 figures. Some typos are fixed. Published in Ergodic Theory Dynam. Systems (2010), Vol. 30, No. 2, 601-633.
Joint Optimization of Communications and Federated Learning Over the Air
Creators: name: Fan, Xin
name: Wang, Yue
name: Huo, Yan
name: Tian, Zhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Federated learning (FL) is an attractive paradigm for making use of rich distributed data while protecting data privacy. Nonetheless, nonideal communication links and limited transmission resources may hinder the implementation of fast and accurate FL. In this paper, we study joint optimization of communications and FL based on analog aggregation transmission in realistic wireless networks. We first derive closed-form expressions for the expected convergence rate of FL over the air, which theoretically quantify the impact of analog aggregation on FL. Based on the analytical results, we develop a joint optimization model for accurate FL implementation, which allows a parameter server to select a subset of workers and determine an appropriate power scaling factor. Since the practical setting of FL over the air encounters unobservable parameters, we reformulate the joint optimization of worker selection and power allocation using controlled approximation. Finally, we efficiently solve the resulting mixed-integer programming problem via a simple yet optimal finite-set search method by reducing the search space. Simulation results show that the proposed solutions developed for realistic wireless analog channels outperform a benchmark method, and achieve comparable performance of the ideal case where FL is implemented over noise-free wireless channels.
description: V2: Corrected typos and some technical content. Added some references. Added some theoretical proofs. Added some content to make our research applicable to more scenarios
A model to predict pig growth based on Western Canadian production conditions
Creators: name: Dyble, David Leslie
Publisher: name: University of British Columbia
Year: 2010

description: An integrated pig growth model specific to the dietary formulations, genetic quality and environmental conditions of western Canada has been developed. A computer program was designed to simulate growth of pigs between 20 kgs and 100 kgs live weight. A spreadsheet format -Lotus 123 - was used to allow programming steps to be understood by all users, including those who do not possess a high degree of programming skill. A linear programming system was also incorporated through the use of an algorithm - Optimal Solutions. A useful method of avoiding circular errors, through an initial prediction of growth, was developed through the use of a 'Gompertz' style equation which describes growth; B.W. = A exp (-B exp (-k(t))) where B.W. is body weight (kg), A is mature body weight [estimate based on NRC(1988):164 kg], B is a rate constant [4.46], k is a rate constant [range from 0.01 to 0.015] and t is the time in days. A model of nutrient flow was developed with components which include, [1] body composition at the start of growth, [2] energy and amino acid intake, [3] the utilization of ingested amino acids, [4] the upper limit to daily protein retention, [5] The interaction between metabolizable energy and protein as a proportion of the deposition of body lipid and protein, and [6] equations which assist in the prediction of performance factors. A model proof was undertaken through a study of pig performance across 4 diets varying in protein level. Pig performance indicators included; feed intake, feed efficiency, carcass index and carcass yield. A significant correlation (p<0.05) was shown between model predictions of market age and trial results. Pig rearing conditions differ in western Canada, compared to the rest of North America, due to the influence of British breeding companies and the common use of barley as a key ingredient of swine diets. The growth model developed was found to be a good predictor of performance of pigs being grown in western Canada. Feed intake and the genetic potential for protein deposition were found to be the most important predictors of pig performance.
D6.2 NANOFACTS Dissemination tools and materials I
Creators: name: Mladenović, Minja
name: Savić, Slavica
name: Trajković, Milica
name: Radonic, Vasa
name: Knežević, Nikola
Publisher: name: Zenodo
Year: 2024

description:  

This document provides an overview of the dissemination and communication activities conducted during the first 13 months of the NANOFACTS project. It details website traffic, social media engagement, scientific publications, and dissemination events attended or organized by BIOS staff to engage the national and European communities.