cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mean--field electrodynamics: Critical analysis of various analytical approaches to the mean electromotive force
Creators: name: Raedler, Karl-Heinz
name: Rheinhardt, Matthias
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There are various analytical approaches to the mean electromotive force $\cal E =< \vec{u}\times \vec{b}>$ crucial in mean--field electrodynamics, with $\vec{u}$ and $\vec{b}$ being velocity and magnetic field fluctuations. In most cases the traditional approach, restricted to the second--order correlation approximation, has been used. Its validity is only guaranteed for a range of conditions, which is narrow in view of many applications, e.g., in astrophysics. With the intention to have a wider range of applicability other approaches have been proposed which make use of the so--called $τ$--approximation, reducing correlations of third order in $\vec{u}$ and $\vec{b}$ to such of second order. After explaining some basic features of the traditional approach a critical analysis of the approaches of that kind is given. It is shown that they lead in some cases to results which are in clear conflict with those of the traditional approach. It is argued that this indicates shortcomings of the $τ$--approaches and poses serious restrictions to their applicability. These shortcomings do not result from the basic assumption of the $τ$--approximation. Instead, they seem to originate in some simplifications made in order to derive $\cal E$ without really solving the equations governing $\vec{u}$ and $\vec{b}$. A starting point for a new approach is described which avoids the conflict.
description: 32 pages, no figures; accepted by Geophys. Astrophys. Fluid Dynam. A quenching formula for \alpha and a section on comparisons with numerical simulations added; references amended; changes in presentation and language
Calibrations on spaces with GxG-structure
Creators: name: Gmeiner, Florian
name: Witt, Frederik
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In these notes we give an introduction to the concept of spaces with GxG-structure and their structured submanifolds. These objects generalise the classical notion of a calibrated submanifold. Therefore, they are interesting from a string theory viewpoint as they are relevant to describe D-branes in string compactifications on backgrounds with fluxes.
description: 4 pages; contribution to the proceedings of the RTN workshop "Constituents, Fundamental Forces and Symmetries of the Universe", Naples, Italy, 9-13 Oct 2006
Reflections on Designing and Running Visualization Design and Programming Activities in Courses with Many Students
Creators: name: Knudsen, Søren
name: Bennetsen, Mathilde Bech
name: Høj, Terese Kimmie
name: Jensen, Camilla
name: Jørgensen, Rebecca Louise Nørskov
name: Loft, Christian Søe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: In this paper, we reflect on the educational challenges and research opportunities in running data visualization design activities in the context of large courses. With the increasing number and sizes of data visualization course, we need to better understand approaches to scaling our teaching efforts. We draw on experiences organizing and facilitating activities primarily based on one instance of a master's course given to about 130 students. We provide a detailed account of the course with particular focus on the purpose, structure, and outcome of six two-hour design activities. Based on this, we reflect on three aspects of the course: First, how the course scale led us to thoroughly plan, evaluate, and revise communication between students, teaching assistants, and lecturers. Second, how we designed learning scaffolds through the design activities, and the reflections we received from students on this matter. Finally, we reflect on the diversity of the students that followed the course, the visualization exercises we used, the projects they worked on, and when to key in on simple boring problems and data sets. Thus, our paper contributes with discussions about balancing topical diversity, scaling courses to many students, and problem-based learning.
description: Copyright 2023 IEEE. This is the author's version of the article that has been published in the proceedings of IEEE Visualization conference. The final version of this record is available at: https://doi.org/10.1109/EduVis60792.2023.00015
Multi-harmonic Hamiltonian models with applications to first-order resonances
Creators: name: Lei, Hanlun
name: Li, Jian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work, two multi-harmonic Hamiltonian models for mean motion resonances are formulated and their applications to first-order resonances are discussed. For the $k_p$:$k$ resonance, the usual critical argument $φ= k λ- k_p λ_p + (k_p - k) \varpi$ is taken as the resonant angle in the first model, while the second model is characterized by a new critical argument $σ= φ/ k_p$. Based on canonical transformations, the resonant Hamiltonians associated with these two models are formulated. It is found that the second Hamiltonian model holds two advantages in comparison to the first model: (a) providing a direct correspondence between phase portraits and Poincaré sections, and (b) presenting new phase-phase structures where the zero-eccentricity point is a visible saddle point. Then, the second Hamiltonian model is applied to the first-order inner and outer resonances, including the 2:1, 3:2, 4:3, 2:3 and 3:4 resonances. The phase-space structures of these first-order resonances are discussed in detail and then the libration centers and associated resonant widths are identified analytically. Simulation results show that there are pericentric and apocentric libration zones where the libration centers diverge away from the nominal resonance location as the eccentricity approaches zero and, in particular, the resonance separatrices do not vanish at arbitrary eccentricities for both the inner and outer (first-order) resonances.
description: Accepted for publication by MNRAS on October 2, 2020. The paper contains 18 pages and 15 figures
Mongolotettix jigongshanensis Wang & Dai & Yin 2023, sp. nov.
Creators: name: Wang, Shengnan
name: Dai, Li
name: Yin, Zhan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Acrididae
Mongolotettix
Mongolotettix jigongshanensis

description: Mongolotettix jigongshanensis sp. nov.
Holotype ♂, paratype ♀, Henan, Xinyang, Jigongshan 31º48´N, 114º04´E, 1984-VII-10, collected by Li Dong-Sheng & Zhang Cun-Jiang.
Male Body small in size. Head shorter than pronotum. Face oblique in profile. Frontal ridge nearly parallel. Antennae ensiform, 20 segmented, extending distinctly over hind margin of pronotum. Eyes oval, vertical diameter 2.0 times horizontal diameter and 1.4 times length of subocular furrow. Pronotum median keel visible, distinctly cut by hind transverse sulcus, lateral keels almost parallel, prozona 1.3 times of metazona in length. Tegmina longer, reaching of 6 th abdominal tergum, apically concave in the middle, maximum width of cubital area 2.0 times maximum width of medial area. Interspace of mesosternum slightly narrowed in the middle, Length of interspace of mesosternum 3.0 times minimum width. Lateral lobes of metasternum separated. Upper keel of hind femur smooth, length of hind femur 5.6 times its maximum width, end of lower knee lobes angular, inner side with 105 stridulatory pegs. Hind tibia with 13-14 spines on inner and outer sides, external apical spine absent. Second metatarsomere shorter than the first. Tympanum large and round. Cercus long conical, almost reaching tip of epiproct. Subgenital plate long conical. Epiphallus without acute projection on both outer sides.
Female: Body more robust than male. Vertical diameter of eyes 1.5 times horizontal diameter and 1.5 times the length of subocular furrow. Prozona 1.3 times metazoan in length. Tegmina short, reaching the middle of 2nd abdominal tergite, length 2.8 times its maximum width. Length of hind femur 5.8 times its maximum width. Cercus short-conical, not reaching end of epiproct. Hind margin of tergum of periproct with circular furculae. Upper ovipositor valve longer, length 3.1 times maximum width.
Coloration: Body brown. Antennae yellow. Pronotum yellowish-brown. Tegmina of male without a white stripe on the fore margin at base. Tegmina of female with a black longitudinal stripe in the middle. Abdomen yellowish-brown, with a broad dark longitudinal stripe on both sides. Subgenital plate brown.
Diagnosis. The new species is similar to M. hubeiensis Zheng et al, 2017. The major differences are listed in
Measurement (in mm): Length of body: ♂ 22.1, ♀ 28.0. Length of tegmina: ♂ 11.7, ♀ 4.2. Length of hind femur: ♂ 11.9, ♀ 14.2.
Etymology The specific epithet is named for the type locality Jigongshan.
description: Published as part of Wang, Shengnan, Dai, Li & Yin, Zhan, 2023, A new species of the genus Mongolotettix Rehn, 1928 from Henan, China (Acrididae Acridoidea, Orthoptera), pp. 487-490 in Zootaxa 5380 (5) on pages 487-489, DOI: 10.11646/zootaxa.5380.5.5, http://zenodo.org/record/10254580
Study of the superconducting ground state of topological superconducting candidates Ti$_{3}$X (X = Ir, Sb)
Creators: name: Mandal, Manasi
name: P., Sajilesh K.
name: Chowdhury, Rajeswari Roy
name: Singh, D.
name: Biswas, P. K.
name: Hillier, A. D.
name: Singh, R. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The topologically non-trivial band structure of A15 compounds has drawn attention owing to the possible realization of topological superconductivity. Here, we report a microscopic investigation of the superconducting ground state in A15 compound Ti$_{3}$X (X = Ir, Sb) by muon spectroscopy measurements. Zero field muon measurements have shown that time-reversal symmetry is preserved in these materials. Furthermore, specific heat and a transverse field muon spectroscopy measurement rule out any possibility to have a nodal or anisotropic superconducting gap, revealing a conventional s-wave nature in the superconducting ground state. This work classifies A15 compound Ti$_{3}$X (X = Ir, Sb) as a time-reversal preserved topological superconductor.
description: 7 pages, 9 figures
Constraints on the Stellar Mass Function from Stellar Dynamics at the Galactic Center
Creators: name: Alexander, R. D.
name: Begelman, M. C.
name: Armitage, P. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the dynamical evolution of a disk of stars orbiting a central black hole. In particular, we focus on the effect of the stellar mass function on the evolution of the disk, using both analytic arguments and numerical simulations. We apply our model to the ring of massive stars at ~0.1pc from the Galactic Center, assuming that the stars formed in a cold, circular disk, and find that our model requires the presence of a significant population of massive (>100Msun) stars in order to explain the the observed eccentricities of 0.2-0.3. Moreover, in order to limit the damping of the heavier stars' eccentricities, we also require fewer low-mass stars than expected from a Salpeter mass function, giving strong evidence for a significantly ``top-heavy'' mass function in the rings of stars seen near to the Galactic Center. We also note that the maximum possible eccentricities attainable from circular initial conditions at ages of <10Myr are around 0.4-0.5, and suggest that any rings of stars found with higher eccentricities were probably not formed from circular disks.
description: 9 pages, 5 figures. Accepted for publication in ApJ
Turning Waste into Wealth: Leveraging Low-Quality Samples for Enhancing Continuous Conditional Generative Adversarial Networks
Creators: name: Ding, Xin
name: Wang, Yongwei
name: Xu, Zuheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Continuous Conditional Generative Adversarial Networks (CcGANs) enable generative modeling conditional on continuous scalar variables (termed regression labels). However, they can produce subpar fake images due to limited training data. Although Negative Data Augmentation (NDA) effectively enhances unconditional and class-conditional GANs by introducing anomalies into real training images, guiding the GANs away from low-quality outputs, its impact on CcGANs is limited, as it fails to replicate negative samples that may occur during the CcGAN sampling. We present a novel NDA approach called Dual-NDA specifically tailored for CcGANs to address this problem. Dual-NDA employs two types of negative samples: visually unrealistic images generated from a pre-trained CcGAN and label-inconsistent images created by manipulating real images' labels. Leveraging these negative samples, we introduce a novel discriminator objective alongside a modified CcGAN training algorithm. Empirical analysis on UTKFace and Steering Angle reveals that Dual-NDA consistently enhances the visual fidelity and label consistency of fake images generated by CcGANs, exhibiting a substantial performance gain over the vanilla NDA. Moreover, by applying Dual-NDA, CcGANs demonstrate a remarkable advancement beyond the capabilities of state-of-the-art conditional GANs and diffusion models, establishing a new pinnacle of performance. Our codes can be found at https://github.com/UBCDingXin/Dual-NDA.
Post-partum Kanamalı Hastada Traneksamik Asit
Creators: name: Erkman Sanrı
Publisher: name: Zenodo
Year: 2017

description: Tüm dünyada maternal ölümlerin en sık sebebi Post-Partum Kanama (PPK) olarak tanımlanmaktadır. Doğumu (vajinal veya C/S) takip eden ilk 24 saat içerisinde >500 mL kanama olarak tanımlanan PPK; hem anne, hem bebek, hem de toplum sağlığı açısından çok ciddi önem arz eden bir durumdur ve PPK’ya bağlı mortaliteyi azaltmak için uzun yıllardır birçok çalışma yapılmıştır. Traneksamik asitin (TA) kanamalı hastaların yönetiminde kullanılması, her geçen gün daha da artmaktadır. Bu konuda lider çalışmaların başında 2010 yılında yayınlanan; travmaya bağlı kanamalı hastalarda, TA’in mortaliteyi azalttığına dair güçlü veriler sunan CRASH21 çalışması gelmektedir. TA’in hem travmada hem de diğer kanama etyolojilerinde kullanımı ile alakalı birçok çalışma yapılmıştır. Hem literatüre hem de FOAMed sitelerine ışık tutan bu konuya acilci.net’te de geçtiğimiz yıllarda yer verilmiştir. Ancak bu yıla kadar Post-Partum Kanamalı hastada Traneksamik Asit kullanımı ile alakalı klinik uygulamaları kökünden değiştirecek güce sahip bir çalışma yayınlanmamıştı. İlk olarak geçen yıl Dr. Ersin Fırıncıoğulları’nın acilci.net’teki yazısında haberini verdiği, bu yıl LANCET’te yayınlanan WOMAN2 çalışması, klinik uygulamaya ve literatüre ışık tutacak güce sahip gibi gözüküyor.
Magnetic-flux-controlled giant Fano factor for the coherent tunneling through a parallel double-quantum-dot
Creators: name: Dong, Bing
name: Lei, X. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report our studies of zero-frequency shot noise in tunneling through a parallel-coupled quantum dot interferometer by employing number-resolved quantum rate equations. We show that the combination of quantum interference effect between two pathways and strong Coulomb repulsion could result in a giant Fano factor, which is controllable by tuning the enclosed magnetic flux.
description: 11 pages, 2 figures
PAL10 - Pensionsafkastbeskatningsloven
Creators: Skatteforvaltningen
Publisher: name: Rigsarkivet
Year: 2024

description:
Formålet med PAL10 systemet for de pågældende årgange, er at administrerer indberetning af PAL-oplysninger for et specifikt indkomstår.
Dette sker på baggrund af indberetninger af angivelser og korrektioner , som foretages af penge- og pensionsinstitutterne.
Indberetning af de pågældende blanketter, kan ligeledes foretages af Skatteforvaltningen. Det er dog alene Skatteforvaltningen der kan indberette kendelser og skønsmæssige ansættelser.
Indberetningerne sker via grænseflade i NTSE og opdateres via web-service i PAL-backend.
Der kan i et kalenderår indberettes til et indkomstår, som svarer til forrige kalenderår.
Indberetningsblanketternes indhold varierer i forhold til virksomhedens forretningsområde i Erhvervssystemet. Der kan indberettes flere blankettyper pr. indkomstår til én virksomhed.
Towards understanding broad degeneracy in non-strange mesons
Creators: name: Afonin, S. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spectroscopic regularities of modern empirical data on the non-strange mesons up to 2.4 GeV can be summarized as a systematic clustering of states near certain values of energy. It is getting evident that some unknown X-symmetry triggers the phenomenon. We review the experimental status of this symmetry and recent theoretical attempts put forward for explanation of broad degeneracy.
description: Brief review, 16 pages, 1 figure
Gluon TMD fragmentation function into quarkonium
Creators: name: Echevarria, Miguel G.
name: Romera, Samuel F.
name: Scimemi, Ignazio
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the gluon transverse-momentum-dependent fragmentation function (TMDFF) at next-to-leading order (NLO) into heavy quarkonium in the color-octet $^3S_1^{[8]}$ channel, based on the NRQCD factorization approach. The spurious rapidity divergences are explicitly shown to cancel in a well-defined TMDFF, which incorporates the needed soft factor. We also compute the integrated gluon FF at NLO in the same $^3S_1^{[8]}$ channel, and show that the matching coefficient of the TMDFF onto the FF at large transverse momentum is the expected one. These results are relevant to perform precise and sensible phenomenological studies of transverse-momentum spectra of quarkonium production, for which the production mechanism through fragmentation plays a relevant role, like in the future Electron-Ion Collider.
description: v3: matches published version; v2: typos corrected; v1: 29 pages, 2 figures
Controlling high-harmonic generation and above-threshold ionization with an attosecond-pulse train
Creators: name: Faria, C. Figueira de Morisson
name: Salieres, P.
name: Villain, P.
name: Lewenstein, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We perform a detailed analysis of how high-order harmonic generation (HHG) and above-threshold ionization (ATI) can be controlled by a time-delayed attosecond-pulse train superposed to a strong, near-infrared laser field. In particular we show that the high-harmonic and photoelectron intensities, the high-harmonic plateau structure and cutoff energies, and the ATI angular distributions can be manipulated by changing this delay. This is a direct consequence of the fact that the attosecond pulse train can be employed as a tool for constraining the instant an electronic wave packet is ejected in the continuum. A change in such initial conditions strongly affects its subsequent motion in the laser field, and thus HHG and ATI. In our studies, we employ the Strong-Field Approximation and explain the features observed in terms of interference effects between various electron quantum orbits. Our results are in agreement with recent experimental findings and theoretical studies employing purely numerical methods.
description: 10 pages revtex and 6 figures (eps files)
Quasiparticle dispersion near the Fermi surface in Na$_x$CoO$_2$
Creators: name: Bourgeois, A.
name: Aligia, A. A.
name: Kroll, T.
name: Núñez-Regueiro, M. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We construct an effective Hamiltonian for the motion of t2g highly correlated states in NaxCoO2. This three-band model includes the indirect Co-O-Co hopping t and the crystal-field splitting 3D. Calculations in a CoO6 cluster give the effective parameters t=100 meV and 3D=315 meV. The Hamiltonian is solved using a generalized slave-boson mean-field approximation. The results show a significant band renormalization. Without any additional hypothesis, the dispersion of the bands near the Fermi energy and Fermi surface topology agrees with angle-resolved photoemission experiments, in contrast to predictions using the local-density approximation.
description: 2 pages, 2 figures, to be published in Proceedings of M2S HTSC Dresden 2006
$\mathbb{Z}_2$ phases and Majorana spectroscopy in paired Bose-Hubbard chains
Creators: name: Vishveshwara, Smitha
name: Weld, David M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the Bose-Hubbard chain in the presence of nearest-neighbor pairing. The pairing term gives rise to an unusual gapped $\mathbb{Z}_2$ Ising phase that has number fluctuation but no off-diagonal long range order. This phase has a strongly correlated many-body doubly degenerate ground state which is effectively a gap-protected macroscopic qubit. In the strongly interacting limit, the system can be mapped onto an anisotropic transverse spin chain, which in turn can be mapped to the better-known fermionic sister of the paired Bose-Hubbard chain: the Kitaev chain which hosts zero-energy Majorana bound states. While corresponding phases in the fermionic and bosonic systems have starkly different wavefunctions, they share identical energy spectra. We describe a possible cold-atom realization of the paired Bose-Hubbard model in a biased zig-zag optical lattice with reservoir-induced pairing, opening a possible route towards experimental Kitaev chain spectroscopy.
description: 5 pages, 2 figures
Quantum Field Theory of Correlated Bose-Einstein condensates: I. Basic Formalism
Creators: name: Kita, Takafumi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Quantum field theory of equilibrium and nonequilibrium Bose-Einstein condensates is formulated so as to satisfy three basic requirements: the Hugenholtz-Pines relation; conservation laws; identities among vertices originating from Goldstone's theorem I. The key inputs are irreducible four-point vertices, in terms of which we derive a closed system of equations for Green's functions, three- and four-point vertices, and two-particle Green's functions. It enables us to study correlated Bose-Einstein condensates with a gapless branch of single-particle excitations without encountering any infrared divergence. The single- and two-particle Green's functions are found to share poles, i.e., the structure of the two-particle Green's functions predicted by Gavoret and Nozières for a homogeneous condensate at $T=0$ is also shown to persist at finite temperatures, in the presence of inhomogeneity, and also in nonequilibrium situations.
description: 12 pages, 2 figures
Progress on the Kretschmann-Schlingemann-Werner Conjecture
Creators: name: Ende, Frederik vom
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Given any pair of quantum channels $Φ_1,Φ_2$ such that at least one of them has Kraus rank one, as well as any respective Stinespring isometries $V_1,V_2$, we prove that there exists a unitary $U$ on the environment such that $\|V_1-({\bf1}\otimes U)V_2\|_\infty\leq\sqrt{2\|Φ_1-Φ_2\|_\diamond}$. Moreover, we provide a simple example which shows that the factor $\sqrt2$ on the right-hand side is optimal, and we conjecture that this inequality holds for every pair of channels.
description: 9+3 pages, to appear in Quantum Inf. Comput
KMD Børn og Voksne
Creators: Assens kommune
Fredericia kommune
Faaborg-Midtfyn kommune
Kalundborg kommune
Morsø kommune
Norddjurs kommune
Nyborg kommune
Samsø kommune
Skanderborg kommune
Skive kommune
Solrød kommune
Varde kommune
Vesthimmerland kommune
Viborg kommune
Publisher: name: Rigsarkivet
Year: 2024

description: KMD Børn og Voksne anvendes til afregninger for foranstaltninger, både over for børn og unge samt voksne, og er dermed med til at understøtte kommuners håndtering af især det specialiserede socialområde.
Resonating Valence Bond States in 2 and 3D: Brief History and Recent Examples
Creators: name: Baskaran, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Resonating Valence Bond states are quantum spin liquids, having low energy spin-half (spinon) or spin-1 excitations. Although spins are `disordered', they posses subtle topological orders and some times chiral orders. RVB states are easily appreciated and seem natural in the quantum fluctuation dominated 1D world. In 2 and 3D, competing orders such as antiferromagnetism, charge order or even superconductivity often hide an underlying robust quantum spin liquid state. Introduction of additional spin interactions or doping of delocalized charges, or finite temperatures, could frustrate the long range magnetic order and reveal a robust RVB state. To this extent they are natural in 2D and above. We present a brief history of insulating RVB states. Then we summarise our own recent theory of RVB states for 2 and 3D systems, including some newly synthesised ones: i) boron doped diamond, ii) \nxcob, iii) quasi 2D organic conductors and iv) a 2D graphene sheet.
description: 10 pages, 11 figures. Invited talk given at a Special Session of `Condensed Matter Days-2005', on the `Majumdar-Ghosh Model', held at Berhampur University, Orissa, India, during 29-31 August, 2005
Αγενής πολλαπλασιασμός αγριελιάς με μοσχεύματα:
Creators: name: Ισπικούδης, Στέφανος
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Υδρονέφωση
Φυσικός ρυθμιστής
Ριζοβολία
Intermittent mist
Hormone
Rost growth

description: Στην παρούσα μεταπτυχιακή διατριβή μελετήθηκε η ριζοβολία μοσχευμάτων από βοσκημένα και αβόσκητα φυτά αγριελιάς (Olea europaea var. Oleaster) σε σύστημα υδρονέφωσης, τα οποία λήφθηκαν σε διαφορετικές εποχές (φθινόπωρο, άνοιξη, καλοκαίρι) και εμβαπτίστηκαν σε διαφορετικές συγκεντρώσεις Κ-ΙΒΑ (0, 3000, 6000 και 12000ppm). Τα καλύτερα ποσοστά ριζοβολίας επιτεύχθηκαν με τη χρήση Κ-ΙΒΑ σε συγκεντρώσεις 3000 και 6000 ppm, ενώ η χρήση Κ-ΙΒΑ σε συγκεντρώσεις 12000 ppm αν και παρουσίασε μικρή αύξηση στη ριζοβολία σε σχέση με το μάρτυρα φαίνεται ότι έδρασε ανασταλτικά. Σημαντικό ρόλο έπαιξε και η εποχή λήψης των μοσχευμάτων αγριελιάς, τα μοσχεύματα που συλλέχθηκαν το φθινόπωρο (Νοέμβριο) και την άνοιξη (Απρίλιο) εμφάνισαν ικανοποιητικά ποσοστά ριζοβολίας, χωρίς σημαντικές διαφορές μεταξύ τους, ενώ αντίθετα αυτά του καλοκαιριού (Ιούνιο) παρουσίασαν σημαντική μείωση του ποσοστού ριζοβολίας σε σχέση με τις άλλες δύο εποχές. Επίσης, βρέθηκε ότι η ριζοβολία των μοσχευμάτων δεν επηρεάστηκε από τη βόσκηση. Μοσχεύματα που λήφθηκαν από βοσκημένα φυτά δεν εμφάνισαν στατιστικά σημαντικές διαφορές με αυτά που λήφθηκαν από αβόσκητα. Για την παραγωγή πολλών φυταρίων ο καλύτερος συνδυασμός είναι μοσχεύματα από βοσκημένα φυτά, την περίοδο της άνοιξης και εμβάπτισή τους σε συγκέντρωση 6000 ppm Κ-ΙΒΑ.
description: In the present postgraduate thesis the rooting of cuttings from grazed and un-grazed wild olive plants (Olea europaea var. Oleaster) were studied, in an intermittent mist system. The cuttings were collected in different seasons of the year (autumn, spring, summer) and were treated with different concentrations of K-IBA (0, 3000, 6000 and 12000ppm). The highest percentages of rooting were achieved with K-IBA concentrations of 3000 and 6000 ppm, while K-IBA concentrations of 12000 ppm had no significant impact on rooting. It seems that it acted suspensively. The season of the year that the cuttings were collected played also an important role on rooting. The cuttings that were collected in fall (November) and spring (April) achieved satisfactory rooting percentages, without significant differences from each other, while those collected in the summertime (June) presented significant reduction of rooting percentages comparing to the other two seasons. Cuttings that have been taken from grazed plants did not present statistically important differences comparing with those taken from un-grazed plants. For the production of many young plants the best combination is cuttings from grazed plants, in spring and with treatment in concentration of 6000 ppm K-IBA.
Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions II: Meson Spectra and HBT Radii
Creators: name: Romatschke, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Causal viscous hydrodynamic fits to experimental data for pion and kaon transverse momentum spectra from central Au+Au collisions at \sqrt{s_{NN}}=200 GeV are presented. Starting the hydrodynamic evolution at 1 fm/c and using small values for the relaxation time, reasonable fits up to moderate ratios η/s\simeq 0.4 can be obtained. It is found that a percentage of roughly 50 η/s to 75 η/s of the final meson multiplicity is due to viscous entropy production. Finally, it is shown that with increasing viscosity, the ratio of HBT radii R_{out}/R_{side} approaches and eventually matches the experimental data.
description: 10 pages, 6 figures; v2: bug corrected, minor changes in results
Probing Neutral Triple Gauge Couplings with $Z^* γ\, (ν\bar νγ)$ Production at Hadron Colliders
Creators: name: Ellis, John
name: He, Hong-Jian
name: Xiao, Rui-Qing
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study probes of neutral triple gauge couplings (nTGCs) via $Z^*γ$ production followed by off-shell decays $Z^*\toν\barν$ at the LHC and future $pp$ colliders, including both CP-conserving (CPC) and CP-violating (CPV) couplings. We present the dimension-8 SMEFT operators contributing to nTGCs and derive the correct form factor formulation for the off-shell vertices $Z^*γV^*$ ($V=Z,γ$) by matching them with the dimension-8 SMEFT operators. Our analysis includes new contributions enhanced by the large off-shell momentum of $Z^*$, beyond those of the conventional $ZγV^*$ vertices with on-shell $Zγ$. We analyze the sensitivity reaches for probing the CPC/CPV nTGC form factors and the new physics scales of the dimension-8 nTGC operators at the LHC and future 100TeV $pp$ colliders. We compare our new predictions with the existing LHC measurements of CPC nTGCs in the $ν\barνγ$ channel and demonstrate the importance of our new method.
description: 25 pages (including supplemental material), only minor refinements, to match the version of PRD(letter)
Measuring the mixing scale of the ISM within nearby spiral galaxies
Creators: name: Kreckel, Kathryn
name: Ho, I-Ting
name: Blanc, Guillermo A.
name: Glover, Simon C. O.
name: Groves, Brent
name: Rosolowsky, Erik
name: Bigiel, Frank
name: Boquien, Mederic
name: Chevance, Melanie
name: Dale, Daniel A.
name: Deger, Sinan
name: Emsellem, Eric
name: Grasha, Kathryn
name: Kim, Jenny J.
name: Klessen, Ralf S.
name: Kruijssen, J. M. Diederik
name: Lee, Janice C.
name: Leroy, Adam K.
name: Liu, Daizhong
name: McElroy, Rebecca
name: Meidt, Sharon E.
name: Pessa, Ismael
name: Sanchez-Blazquez, Patricia
name: Sandstrom, Karin
name: Santoro, Francesco
name: Scheuermann, Fabian
name: Schinnerer, Eva
name: Schruba, Andreas
name: Utomo, Dyas
name: Watkins, Elizabeth J.
name: Williams, Thomas G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The spatial distribution of metals reflects, and can be used to constrain, the processes of chemical enrichment and mixing. Using PHANGS-MUSE optical integral field spectroscopy, we measure the gas phase oxygen abundances (metallicities) across 7,138 HII regions in a sample of eight nearby disc galaxies. In Paper I (Kreckel et al. 2019) we measure and report linear radial gradients in the metallicities of each galaxy, and qualitatively searched for azimuthal abundance variations. Here, we examine the two-dimensional variation in abundances once the radial gradient is subtracted, Delta(O/H), in order to quantify the homogeneity of the metal distribution and to measure the mixing scale over which HII region metallicities are correlated. We observe low (0.03--0.05 dex) scatter in Delta(O/H) globally in all galaxies, with significantly lower (0.02--0.03 dex) scatter on small (<600 pc) spatial scales. This is consistent with the measurement uncertainties, and implies the two-dimensional metallicity distribution is highly correlated on scales of <600 pc. We compute the two point correlation function for metals in the disc in order to quantify the scale lengths associated with the observed homogeneity. This mixing scale is observed to correlate better with the local gas velocity dispersion (of both cold and ionized gas) than with the star formation rate. Selecting only HII regions with enhanced abundances relative to a linear radial gradient, we do not observe increased homogeneity on small scales. This suggests that the observed homogeneity is driven by the mixing introducing material from large scales rather than by pollution from recent and on-going star formation.
description: 17 pages, 14 figures. Accepted for publication in MNRAS
KMD Opus Økonomi
Creators: Albertslund kommune
Assens kommune
Brønderslev kommune
Fanø kommune
Fredericia kommune
Halsnæs kommune
Herlev kommune
Hillerød kommune
Horsens kommune
Hvidovre kommune
Kalundborg kommune
Kerteminde kommune
Køge kommune
Langeland kommune
Lejre kommune
Lemvig kommune
Morsø kommune
Norddjurs kommune
Nordfyn kommune
Odder kommune
Rebild kommune
Ringkøbing-Skjern kommune
Samsø kommune
Skanderborg kommune
Solrød kommune
Stevns kommune
Struer kommune
Vallensbæk kommune
Ærø kommune
Publisher: name: Rigsarkivet
Year: 2024

description: KMD Opus Økonomi er et system til varetagelse af kommunens økonomi.
A cemetery for the city
Creators: name: Burkitt, James
Publisher: name: University of British Columbia
Year: 2009

description: The intention of this thesis project will be primarily focused on issues of the cemetery that involve its utilization as a vehicle to cultivate an awareness of heritage and its role in establishing a framework on which to promote the sense of communal identity in an authentic manner. For as many divergent societies that co-exist on earth there are equally as many diverse ritualistic patterns involving death and dying particular to each society. Although the study of these ritualistic patterns is an intriguing one, with regard to utilization of the cemetery as a vehicle to strengthen the identity of place, I believe, it is essential to accommodate and enrich already accepted notions of death and dying particular to Vancouver and Canada. As a consequence of the country's age, it seems that there is always the pressure to import character and values from other places. To begin to define an identity and therefore cultivate community there has to be acknowledgment and acceptance of heritage as an initial point of growth. For these reasons, rather than replace an already existing set of rituals with foreign ideologies surrounding death and dying, it is crucial that existing rituals not be discarded. The proposed site for this project is the Grandview Cut rail corridor that extends between the False Creek Flats and Grandview Woodlands in East Vancouver. Specifically, the site is situated between Clark Drive on the west and Slocan Drive on the east.
Aspects of Cooling at the TRI$μ$P Facility
Creators: name: Willmann, L.
name: Berg, G. P.
name: Dammalapati, U.
name: De, S.
name: Dendooven, P.
name: Dermois, O.
name: Jungmann, K.
name: Mol, A.
name: Onderwater, C. J. G.
name: Rogachevskiy, A.
name: Sohani, M.
name: Traykov, E.
name: Wilschut, H. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The Tri$μ$P facility at KVI is dedicated to provide short lived radioactive isotopes at low kinetic energies to users. It comprised different cooling schemes for a variety of energy ranges, from GeV down to the neV scale. The isotopes are produced using beam of the AGOR cyclotron at KVI. They are separated from the primary beam by a magnetic separator. A crucial part of such a facility is the ability to stop and extract isotopes into a low energy beamline which guides them to the experiment. In particular we are investigating stopping in matter and buffer gases. After the extraction the isotopes can be stored in neutral atoms or ion traps for experiments. Our research includes precision studies of nuclear $β$-decay through $β$-$ν$ momentum correlations as well as searches for permanent electric dipole moments in heavy atomic systems like radium. Such experiments offer a large potential for discovering new physics.
description: COOL05 Workshop, Galena, Il, USA, 18-23. Sept. 2005, 5 pages, 3 figures
Rapid pre-merger localization of binary neutron stars in third generation gravitational wave detectors
Creators: name: Hu, Qian
name: Veitch, John
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Pre-merger localization of binary neutron stars (BNSs) is one of the most important scientific goals for the third generation (3G) gravitational wave (GW) detectors. It will enable the electromagnetic observation of the whole process of BNS coalescence, especially for the pre-merger and merger phases which have not been observed yet, opening a window for deeper understandings of compact objects. To reach this goal, we describe a novel combination of multi-band matched filtering and semi-analytical localization algorithms to achieve early-warning localization of long BNS signals in 3G detectors. Using our method we are able to efficiently simulate one month of observations with a three-detector 3G network, and show that it is possible to provide accurate sky localizations more than 30 minutes before the merger. Our simulation shows that there could be ~ 10 (~ 100) BNS events localized within 100 deg2, 20 (6) minutes before merger, per month of observation.
description: 8 pages, 5 figures. Accepted version. Data release available
Probing anomalous relaxation by coherent multidimensional optical spectroscopy
Creators: name: Sanda, F.
name: Mukamel, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose to study the origin of algebraic decay of two-point correlation functions observed in glasses, proteins, and quantum dots by their nonlinear response to sequences of ultrafast laser pulses. Power-law spectral singularities and temporal relaxation in two-dimensional correlation spectroscopy (2DCS) signals are predicted for a continuous time random walk model of stochastic spectral jumps in a two level system with a power-law distribution of waiting times $ψ(t)\sim t^{-α-1}$. Spectroscopic signatures of stationary ensembles for $1
The evolution of high-fidelity social learning
Creators: name: Montrey, Marcel
name: Shultz, Thomas R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A defining feature of human culture is that knowledge and technology continually improve over time. Such cumulative cultural evolution (CCE) probably depends far more heavily on how reliably information is preserved than on how efficiently it is refined. Therefore, one possible reason that CCE appears diminished or absent in other species is that it requires accurate but specialized forms of social learning at which humans are uniquely adept. Here, we develop a Bayesian model to contrast the evolution of high-fidelity social learning, which supports CCE, against low-fidelity social learning, which does not. We find that high-fidelity transmission evolves when (1) social and (2) individual learning are inexpensive, (3) traits are complex, (4) individual learning is abundant, (5) adaptive problems are difficult and (6) behaviour is flexible. Low-fidelity transmission differs in many respects. It not only evolves when (2) individual learning is costly and (4) infrequent but also proves more robust when (3) traits are simple and (5) adaptive problems are easy. If conditions favouring the evolution of high-fidelity transmission are stricter (3 and 5) or harder to meet (2 and 4), this could explain why social learning is common, but CCE is rare.
description: 18 pages, 1 figure. Accepted Author Manuscript published in Proceedings of the Royal Society B: Biological Sciences. Full text and Supplemental Material: http://dx.doi.org/10.1098/rspb.2020.0090
Instabilities in droplets spreading on gels
Creators: name: Daniels, Karen E.
name: Mukhopadhyay, Shomeek
name: Houseworth, Paul J.
name: Behringer, Robert P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report a novel surface-tension driven instability observed for droplets spreading on a compliant substrate. When a droplet is released on the surface of an agar gel, it forms arms/cracks when the ratio of surface tension gradient to gel strength is sufficiently large. We explore a range of gel strengths and droplet surface tensions and find that the onset of the instability and the number of arms depend on the ratio of surface tension to gel strength. However, the arm length grows with an apparently universal law L ~ t^{3/4}.
End-to-End Deep Learning Model for Cardiac Cycle Synchronization from Multi-View Angiographic Sequences
Creators: name: Royer-Rivard, Raphaël
name: Girard, Fantin
name: Dahdah, Nagib
name: Cheriet, Farida
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Dynamic reconstructions (3D+T) of coronary arteries could give important perfusion details to clinicians. Temporal matching of the different views, which may not be acquired simultaneously, is a prerequisite for an accurate stereo-matching of the coronary segments. In this paper, we show how a neural network can be trained from angiographic sequences to synchronize different views during the cardiac cycle using raw x-ray angiography videos exclusively. First, we train a neural network model with angiographic sequences to extract features describing the progression of the cardiac cycle. Then, we compute the distance between the feature vectors of every frame from the first view with those from the second view to generate distance maps that display stripe patterns. Using pathfinding, we extract the best temporally coherent associations between each frame of both videos. Finally, we compare the synchronized frames of an evaluation set with the ECG signals to show an alignment with 96.04% accuracy.
Dynamical chiral symmetry breaking by a magnetic field and multi-quark interactions
Creators: name: Osipov, A. A.
name: Hiller, B.
name: Blin, A. H.
name: da Providencia, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Catalysis of dynamical symmetry breaking by a constant magnetic field in (3+1) dimensions is considered. We use the three flavour Nambu -- Jona-Lasinio type model with 't Hooft and eight-quark interaction terms. It is shown that the multi-quark interactions introduce new additional features to this phenomenon: (a) the local minimum of the effective potential catalyzed by the constant magnetic field is smoothed out with increasing strength of the field at the characteristic scale H~10^{19} G, (b) the multi-quark forces generate independently another local minimum associated with a larger dynamical fermion mass. This state may exist even for multi-quark interactions with a subcritical set of couplings, and is globally stable with respect to a further increase of the magnetic field.
description: 6 pages, 3 figures, added discussion and references, version to appear in Phys.Lett.B
Light Dark Matter in a Blazar-heated Universe
Creators: name: Ghosh, Oindrila
name: Bhattacharyya, Sankalan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Prompt emissions from TeV blazars pair produce off the extragalactic background light and the highly energetic resulting pair beams then cascade through inverse Compton scattering to give rise to secondary gamma-rays. Such reprocessed cascade emission that can be associated with individual blazar sources has not been detected thus far. The absence of pair halos around these sources, along with the non-observation of isotropic gamma-ray background excess, seems to suggest that collective plasma effects, such as beam-plasma instabilities, can play a crucial role in alleviating this GeV-TeV tension by transferring the energy from the pair beams into the background plasma of the intergalactic medium (IGM). This has profound implications not only for TeV astrophysics, but also the strength of the intergalactic magnetic field and properties of dark matter (DM). A direct consequence of the instability losses and IGM heating is the modification of thermal history at late times, which suppresses structure formation particularly in baryonically underdense regions, potentially holding a clue towards resolving the small-scale crisis in cosmology. In a blazar-heated universe, the observation of dwarf galaxies and Lyman-$α$ measurements present a favoured mass range for DM candidates such as light axion-like particles.
description: Proceedings for the 38th International Cosmic Ray Conference (ICRC2023)