cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Halo Mass Function from Excursion Set Theory. I. Gaussian fluctuations with non-markovian dependence on the smoothing scale
Creators: name: Maggiore, Michele
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
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 classic method for computing the mass function of dark matter halos is provided by excursion set theory, where density perturbations evolve stochastically with the smoothing scale, and the problem of computing the probability of halo formation is mapped into the so-called first-passage time problem in the presence of a barrier. While the full dynamical complexity of halo formation can only be revealed through N-body simulations, excursion set theory provides a simple analytic framework for understanding various aspects of this complex process. In this series of paper we propose improvements of both technical and conceptual aspects of excursion set theory, and we explore up to which point the method can reproduce quantitatively the data from N-body simulations. In paper I of the series we show how to derive excursion set theory from a path integral formulation. This allows us both to derive rigorously the absorbing barrier boundary condition, that in the usual formulation is just postulated, and to deal analytically with the non-markovian nature of the random walk. Such a non-markovian dynamics inevitably enters when either the density is smoothed with filters such as the top-hat filter in coordinate space (which is the only filter associated to a well defined halo mass) or when one considers non-Gaussian fluctuations. In these cases, beside ``markovian'' terms, we find ``memory'' terms that reflect the non-markovianity of the evolution with the smoothing scale. We develop a general formalism for evaluating perturbatively these non-markovian corrections, and in this paper we perform explicitly the computation of the halo mass function for gaussian fluctuations, to first order in the non-markovian corrections due to the use of a tophat filter in coordinate space.
description: 20 pages, 9 figures. v3: Improved conceptual aspects. Paper more easily readable
Planet Shadows in Protoplanetary Disks. II: Observable Signatures
Creators: name: Jang-Condell, Hannah
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We calculate simulated images of disks perturbed by embedded small planets. These 10-50 M_Earth bodies represent the growing cores of giant planets. We examine scattered light and thermal emission from these disks over a range of wavelengths, taking into account the wavelength-dependent opacity of dust in the disk. We also examine the effect of inclination on the observed perturbations. We find that the perturbations are best observed in the visible to mid-infrared. Scattered light images reflect shadows produced at the surface of perturbed disks, while the infrared images follow thermal emission from the surface of the disk, showing cooled/heated material in the shadowed/brightened regions. At still longer wavelengths in the sub-millimeter, the perturbation fades as the disk becomes optically thin and surface features become overwhelmed by emission closer toward the midplane of the disk. With the construction of telescopes such as TMT, GMT and ALMA due in the next decade, there is a real possibility of observing planets forming in disks in the optical and sub-millimeter. However, having the angular resolution to observe the features in the mid-infrared will remain a challenge.
description: 26 pages, 10 figures. To appear in ApJ. Resolution of color figures downgraded for astro-ph. Full resolution preprints available at http://www.astro.umd.edu/~hannah/preprints.html
20 Years of Speleothem Paleoluminescence Records of Environmental Changes: An Overview
Creators: name: Shopov, Yavor Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This paper discusses advance of the research on Speleothem Paleoluminescence Records of Environmental Changes after it have been first introduced by the author 20 years ago. It is demonstrated that most of the progress in this field was made in result of the operation of the International Program Luminescence of Cave Minerals of the commission on Physical Chemistry and Hydrogeology of Karst of UIS of UNESCO. Potential, resolution and limitations of high resolution luminescence speleothem proxy records of Paleotemperature, Solar Insolation, Solar Luminosity, Glaciations, Sea Level advances, Past Precipitation, Plants Populations, Paleosoils, Past Karst Denudation, Chemical Pollution, Geomagnetic field and Cosmic Rays Flux variations, Cosmogenic Isotopes production and Supernova Eruptions in the Past, Advances of Hydrothermal Waters, and Tectonic Uplift are discussed. It is demonstrated that speleothems allow extremely high resolution (higher than in any other paleoclimatic terrestrial archives) and long duration of records. Some speleothems can be used as natural climatic stations for obtaining of quantitative proxy records of Quaternary climates with annual resolution.
Pairing mechanism in Fe pnictide superconductors
Creators: name: Chan, R.
name: Gulacsi, M.
name: Ormeci, A.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By applying an exact unitary transformation to a two-band hamiltonian which also includes the effects due to large pnictogen polarizabilities, we show that an attractive spin-mediated Hubbard term appears in the $d_{xz}$, $d_{yz}$ nearest-neighbour channel. This pairing mechanism implies a singlet superconducting order parameter in iron pnictides.
description: 4 pages, 3 figures
数字化种子项目-生菜重测序子项目二期-RNA
Creators: name: 杨婷(TING YANG)
Publisher: name: CNGB
Year: 2023
Subjects: Genome sequencing and assembly
Raw sequence reads
Assembly
Variation
Multispecies
Agricultural

description: 数字化种子项目-生菜重测序子项目二期-RNA
"Where lies the strangling fruit" : transformations into vegetal death in Jeff VanderMeer and Alex Garland's Annihilation(s)
Creators: name: Yamanaka-Leclerc, Leo
Publisher: name: University of British Columbia
Year: 2024

description: This thesis examines the pathological plants and vegetal deaths of Jeff VanderMeer’s novel Annihilation (2014) and its subsequent film adaptation of the same name, directed by Alex Garland (2018). Both the novel and the film explore (self)-destruction and death through encounters between the human and the vegetal, leading to a disintegration of ontological boundaries between the categories of “human” and “plant.” I term this disintegration eco-death – dying by becoming-plant. I contend that the novel and film portray eco-death by conceptualizing plants as fundamentally deathly entities, hovering precariously between life and death. I trace the journeys of the major characters of the novel and film as each of them transform into plant life and death. These transformations are both physical and epistemological, radically altering the bodies as well as the minds of the characters. Furthermore, the novel and film connect vegetal life to sickness, pathology, and – more so in the film – cancer. The novel metaphorizes the vegetal transformation of its protagonist as a spore-induced sickness, while the film further envisions plant life as specifically metastatic. My introductory chapter grounds my thesis through an engagement with the study of Weird and New Weird fiction and cinematic plant horror, as well as recent scholarship in critical plant studies. My second chapter, focusing on the novel, examines the interrelated transformative pathways of “becoming-vegetative,” “becoming-vegetal,” and “becoming-plant.” My third chapter, focusing on the film, studies how its evocative visuals locate an uncanny sublime in monstrous plant life. Both versions of Annihilation are significant, contemporary ecocritical texts whose close study allows for deep engagement with the philosophy of vegetal life and humanity’s fraught relationship to plants and nature.
Cypripedium calceolus Linnaeus 1753
Creators: name: D. M. Moore (Ed.)
Publisher: name: Zenodo
Year: 1980
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Cypripedium
Cypripedium calceolus

description: 1. C. calceolus L., Sp. PI. 951 (1753). Rhizome long. Stem 15-50 cm, glandular-pubescent, with brown basal sheaths. Leaves 3-4, (7—)10—17 x 3*5—7(—10) cm, elliptical to ovate- oblong, acute to acuminate, sparsely pubescent. Flowers 1 (—3), subtended by a large leaf-like bract. Perianth-segments 6-9 cm, reddish-brown, rarely yellow-green (f. viridiflorum Blytt); outer median 3-5-5 cm, ovate- to elliptic-lanceolate, the lateral forming a slightly narrower, downward-pointing bifid segment; inner 4-6 cm, asymmetrical, linear-lanceolate, acuminate. Labellum c. 3 cm, shorter than other perianth-segments, obovoid, rounded at apex, pale yellow, with reddish spots inside. 2n = 20. Woods and meadows; calcicole. N., C., E. & S. E. Europe, westwards to Norway and the S. W. Alps; isolated stations in N. England and the E. Pyrenees. Much rarer than formerly over much of its range. Au Br Bu Cz Da Fe Ga Ge Gr He Hs Hu It Ju No Po Rra Rs (N, B, C, W, K, E) Su.
description: Published as part of D. M. Moore (ed.), 1980, CCIII Orchidaceae, pp. 325-350 in Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge :Cambridge University Press on page 326, DOI: 10.5281/zenodo.215522
Epipactis Zinn 1757
Creators: name: D. M. Moore (Ed.)
Publisher: name: Zenodo
Year: 1980
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Epipactis

description: 2.Epipactis Zinn 1 (Helleborine Miller) Plants with horizontal or vertical rhizome and numerous fleshy roots. Stem leafy. Flowers pedicellate, patent or pendent, in more or less secund spikes. Perianth-segments free, patent or connivent, the inner similar to the outer but smaller. Labellum with concave or cupuliform basal part (hypochile) separated by narrow joint or fold from the flat, forward-directed distal part (epichile), with basal tubercles or ridges; spur absent. Column short. Rostellum usually large and globose, sometimes absent. Viscidia absent; bursicles absent. A difficult genus, particularly with regard to those species (3-5. 7) which are largely or entirely autogamous. 1 By D. M. Moore. Literature: J. Holub, Preslia 42: 330-349 (1970). A. & C. Nieschalk, Abh. Ver. Naturk. Kassel 63: 1 -40 (1970). L. Reich- ling, Arch. Inst. G. -D. Luxemb. (Sei. Nat.) nov. ser., 22: 123-145 (1955). K. Senghas & H. Sundermann (edit.), Jahresb. Naturw. Ver. Wuppertal 23: 1 -132 (1970). D. P. Young, Watsonia 2: 253-276 (1952); 5: 127-139 (1962); Bot. Not. 1953: 253-270 (1953); Bull. Jard. Bot. Bruxelles 28: 123-127 (1958). 1 Rhizome long, creeping; hypochile with 2 erect lateral lobes, connected to epichile by a narrow joint 1.palustris 1 Rhizome short, horizontal or vertical; hypochile without lateral lobes, connected to epichile by 1 or more folds 2 Rhachis, pedicels and ovary densely pubescent 3 Leaves 4-10 cm, distichous; flowers deep purple 8.atrorubens 3 Leaves 1 -3 cm, spirally arranged; flowers greenish, with reddish tinge 9.microphylla 2 Rhachis, pedicels and ovary ± glabrous to scabridulous 4 Leaves distichous; rostellum absent, at least at maturity; flowers frequently cleistogamous or partially so 5 Flowers patent or obliquely pendent; hypochile purplish or pinkish inside (3—5).leptochila group 5 Flowers pendent; hypochile greenish-white inside 7.phyllanthes 4 Leaves spirally arranged; rostellum prominent and per­ sistent; flowers not cleistogamous 6 Leaves greyish or purplish; epichile at least as long as wide 6.purpurata 6 Leaves green; epichile not longer than wide 2.helleborine
description: Published as part of D. M. Moore (ed.), 1980, CCIII Orchidaceae, pp. 325-350 in Flora Europaea, Vol 5: Alismataceae to Orchidaceae, Camebridge :Cambridge University Press on pages 326-327, DOI: 10.5281/zenodo.215522
Benchmarking of microscale models: the Kassel blind test
Creators: name: Dörenkämper, Martin
name: Stoevesandt, Bernhard
name: Klaas, Tobias
name: Kühn, Paul
Publisher: name: Zenodo
Year: 2019
Subjects: wind resource
canopy
LIDAR
AEP
validation

description: Presentation at the NEWA Final Workshop in Bilbao. The Rödeser Berg forested hill experiment near Kassel is presented leading to two rounds of blind tests for wind flow models in different stability conditions. A follow up benchmark is underway related to the assessment of annual energy production (AEP).
Electronic and lattice dynamical properties of the iron-based superconductors LiFeAs and NaFeAs
Creators: name: Jishi, R. A.
name: Alyahyaei, H. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic structure and lattice vibrational frequencies of the newly discovered superconductors, LiFeAs and NaFeAs, are calculated within density functional theory. We show that in the vicinity of the Fermi energy, the density of states is dominated by contributions from Fe 3d states. We also calculate the electron-phonon coupling strength and show that it is too weak to account for the observed values of the superconducting transition temperatures. This seems to indicate that the iron-based superconductors are not of the conventional type.
description: 7 pages, 5 figures,
Light-Front Model of Transition Form-Factors in Heavy Meson Decay
Creators: name: de Melo, J. P. B. C.
name: Frederico, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electroweak transition form factors of heavy meson decays are important ingredients in the extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements from experimental data. In this work, within a light-front framework, we calculate electroweak transition form factor for the semileptonic decay of $D$ mesons into a pion or a kaon. The model results underestimate in both cases the new data of CLEO for the larger momentum transfers accessible in the experiment. We discuss possible reasons for that in order to improve the model.
description: Paper with 5 pages and 2 eps figures. To appear to Nuclear Physics B. Talk at Light Cone 2009: Relativistic Hadronic and Particle Physics (LC 2009), Sao Jose dos Campos, S.P, Brazil, 8-13 Jul 2009.
MOESM1 of Combination of NF-kB targeted siRNA and methotrexate in a hybrid nanocarrier towards the effective treatment in rheumatoid arthritis
Creators: name: Duan, Weifeng
name: Li, Huan
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Figure S1. (A) Particle size analysis of CaP/siRNA NP and F-siRML. The particle size were measured by dynamic light scattering analysis; (B) morphology analysis of CaP/siRNA NP and F-siRML by transmission electron microscope (TEM). Figure S2. Gel retardation assay of CaP/siRNA NP at different N/P ratio. Naked siRNA was taken as a control. Figure S3. In vitro cell viability of blank nanoparticles in RAW 264.7 cells. The cell viability assay was performed by MTT assay protocol.
The Halo Mass Function from Excursion Set Theory. II. The Diffusing Barrier
Creators: name: Maggiore, Michele
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
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: In excursion set theory the computation of the halo mass function is mapped into a first-passage time process in the presence of a barrier, which in the spherical collapse model is a constant and in the ellipsoidal collapse model is a fixed function of the variance of the smoothed density field. However, N-body simulations show that dark matter halos grow through a mixture of smooth accretion, violent encounters and fragmentations, and modeling halo collapse as spherical, or even as ellipsoidal, is a significant oversimplification. We propose that some of the physical complications inherent to a realistic description of halo formation can be included in the excursion set theory framework, at least at an effective level, by taking into account that the critical value for collapse is not a fixed constant $δ_c$, as in the spherical collapse model, nor a fixed function of the variance $σ$ of the smoothed density field, as in the ellipsoidal collapse model, but rather is itself a stochastic variable, whose scatter reflects a number of complicated aspects of the underlying dynamics. Solving the first-passage time problem in the presence of a diffusing barrier we find that the exponential factor in the Press-Schechter mass function changes from $\exp\{-δ_c^2/2σ^2\}$ to $\exp\{-aδ_c^2/2σ^2\}$, where $a=1/(1+D_B)$ and $D_B$ is the diffusion coefficient of the barrier. The numerical value of $D_B$, and therefore the corresponding value of $a$, depends among other things on the algorithm used for identifying halos. We discuss the physical origin of the stochasticity of the barrier and we compare with the mass function found in N-body simulations, for the same halo definition.[Abridged]
description: 7 pages, 5 figures. v3: significant conceptual improvements. More detailed comparison with N-body simulations. References added
Consumers’ Readiness for Green Products And Its effect on Sustainable Development
Creators: name: Srivastava, Mukesh
Publisher: name: figshare
Year: 2021
Subjects: subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified
subject: FOS: Economics and business
subject: 150503 Marketing Management (incl. Strategy and Customer Relations)
subject: 150106 Sustainability Accounting and Reporting

description: The Research paper focuses on finding out the relationship between consumer readiness about green marketing and the level of sustainable development existing in the state of Uttar Pradesh.This research paper questions the hypothesis that there exists a significant relationship between consumers’ readiness for green products and sustainable development.
Massive Black Hole Recoil in High Resolution Hosts
Creators: name: Guedes, Javiera
name: Diemand, Jürg
name: Zemp, Marcel
name: Kuhlen, Michael
name: Madau, Piero
name: Mayer, Lucio
name: Stadel, Joachim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The final inspiral and coalescence of a black hole binary can produce highly beamed gravitational wave radiation. To conserve linear momentum, the black hole remnant can recoil with "kick" velocity as high as 4000 km/s. We present two sets of full N-body simulations of recoiling massive black holes (MBH) in high-resolution, non-axisymmetric potentials. The host to the first set of simulations is the main halo of the Via Lactea I simulation (Diemand et al. 2007). The nature of the resulting orbits is investigated through a numerical model where orbits are integrated assuming an evolving, triaxial NFW potential, and dynamical friction is calculated directly from the velocity dispersion along the major axes of the main halo of Via Lactea I. By comparing the triaxial case to a spherical model, we find that the wandering time spent by the MBH is significantly increased due to the asphericity of the halo. For kicks larger than 200 km/s, the remnant MBH does not return to the inner 200 pc within 1 Gyr, a timescale an order of magnitude larger than the upper limit of the estimated QSO lifetime. The second set of simulations is run using the outcome of a high-resolution gas-rich merger (Mayer et al. 2007) as host potential. In this case, a recoil velocity of 500 km/s cannot remove the MBH from the nuclear region.
description: 4 pages, 4 figures. Proceedings of the conference Galactic & Stellar Dynamics In the Era of High Resolution Surveys
Ring of physical states in the M(2,3) Minimal Liouville gravity
Creators: name: Alekseev, O.
name: Bershtein, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the M(2,3) Minimal Liouville gravity, whose states in the gravity sector are represented by irreducible modules of the Virasoro algebra. We present a recursive construction for BRST cohomology classes. This construction is based on using an explicit form of singular vectors in irreducible modules of the Virasoro algebra. We construct an algebra of operators acting on the BRST cohomology space. The operator algebra of physical states is established by use of these operators.
description: 16 pages Revised version with updates. The arguments in section 4 have been improved
On topological properties of the formal power series substitution group
Creators: name: Babenko, I.
name: Bogatyi, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Certain topological properties of the group $\J(\k)$ of all formal one-variable power series with coefficients in a topological unitary ring $\k$ are considered. We show, in particular, that in the case when $\k=\Q$ the group $\J(\Q)$ has no continuous bijections into a locally compact group. In the case when $\k=\Z$ supplied with discrete topology, in spite of the fact that the group $\J(\Z)$ has continuous bijections into compact groups, it cannot be embedded into a locally compact group. In the final part of the paper the compression property for topological groups is considered. We establish the compressibility of $\J(\Z)$.
description: 10 pages
Regulation of the phagocytic activity of astrocytes by the central nervous system neuroimmune mediators
Creators: name: Yang, Sijie (Shirley)
Publisher: name: University of British Columbia
Year: 2024

description: The phagocytic activity of glial cells is essential for maintaining normal brain function and its dysfunction may contribute to the central nervous system (CNS) pathologies, including neurodegenerative and demyelinating diseases. The non-neuronal glial cells include microglia and astrocytes. Phagocytic activity is one of the well-established neuroimmune functions of microglia. Although emerging evidence indicates that astrocytes can also function as non-professional phagocytes of CNS in humans and rodents, limited information is available about molecular mechanisms that regulate this function. To address this knowledge gap, I studied modulation of the phagocytic activity of human U118 MG astrocytic cells and murine primary astrocytes by five CNS inflammatory mediators and bacterial endotoxin lipopolysaccharide (LPS). Data in chapter two demonstrate that LPS and cytochrome c (CytC) upregulated, while interferon (IFN)-γ downregulated, phagocytosis of latex beads by human U118 MG astrocytic cells and phagocytosis of synaptosomes by murine primary astrocytes. Interleukin (IL)-1β and tumor necrosis factor (TNF)-α had no effect on the phagocytic activity of human astrocytic cells but upregulated this function in murine astrocytes. Varying effects of combinations of the above inflammatory mediators were observed in the two cell types studied. LPS- and CytC-induced phagocytic activity of human astrocytic cells was partially mediated by activation of toll-like receptor 4 (TLR4). By monitoring other functions of astrocytes, I concluded there were no correlations between the effects of the mediators studied on astrocyte phagocytic activity and their secretion of cytokines, cytotoxins, or glutamate. In chapter three, I demonstrate that adenosine 5’ triphosphate (ATP) upregulated phagocytosis of latex beads by human astrocytic cells and murine primary astrocytes. ATP-induced phagocytic activity of human astrocytic cells was partially attributed to the activation of purinergic P2X7 receptor (P2X7R). Additionally, ATP exposure resulted in increased IL-8 secretion and intracellular calcium levels in human U118 MG astrocytic cells. While these findings illustrate a correlation between intracellular calcium concentration and phagocytic activity, further in-depth investigation is warranted to define this relationship. My study identified five candidate CNS regulators of astrocyte phagocytic activity. Future investigation of molecular mechanisms behind this regulation could identify novel therapeutic targets allowing modulation of this astrocyte-mediated clearance mechanism in CNS pathologies.
Activators of Luminescence in Speleothems as Source of Major Mistakes in Interpretation of Luminescent Paleoclimatic Records
Creators: name: Shopov, Y. Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This work summarizes the main results of the operation of the International Program Luminescence of Cave Minerals of the commission on Physical Chemistry and Hydrogeology of Karst of UIS of UNESCO in the field of activators of speleothem luminescence. It discusses Activators of Luminescence in Speleothems as a source of major mistakes in the interpretation of luminescent paleoclimatic records. It demonstrates the existence of 6 types of luminescence of speleothems and cave minerals in dependence of the type of the luminescence center and its incorporation in the mineral. 24 different activators of photoluminescence of speleothem calcite and 11 of aragonite are studied. This paper demonstrates that it is impossible to produce reliable Paleotemperature or Past Precipitation records from luminescence of speleothems without establishing the organic origin of the entire luminescence of the particular sample.
Grassmann tensor renormalization group approach to $(1+1)$-dimensional two-color lattice QCD at finite density
Creators: name: Pai, Kwok Ho
name: Akiyama, Shinichiro
name: Todo, Synge
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We construct a Grassmann tensor network representing the partition function of (1+1)-dimensional two-color QCD with staggered fermions. The Grassmann path integral is rewritten as the trace of a Grassmann tensor network by introducing two-component auxiliary Grassmann fields on every edge of the lattice. We introduce an efficient initial tensor compression scheme to reduce the size of initial tensors. The Grassmann bond-weighted tensor renormalization group approach is adopted to evaluate the quark number density, fermion condensate, and diquark condensate at different gauge couplings as a function of the chemical potential. Different transition behavior is observed as the quark mass is varied. We discuss the efficiency of our initial tensor compression scheme and the future application toward the corresponding higher-dimensional models.
The Halo Mass Function from Excursion Set Theory. III. Non-Gaussian Fluctuations
Creators: name: Maggiore, Michele
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
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: We compute the effect of primordial non-Gaussianity on the halo mass function, using excursion set theory. In the presence of non-Gaussianity the stochastic evolution of the smoothed density field, as a function of the smoothing scale, is non-markovian and beside "local" terms that generalize Press-Schechter (PS) theory, there are also "memory" terms, whose effect on the mass function can be computed using the formalism developed in the first paper of this series. We find that, when computing the effect of the three-point correlator on the mass function, a PS-like approach which consists in neglecting the cloud-in-cloud problem and in multiplying the final result by a fudge factor close to 2, is in principle not justified. When computed correctly in the framework of excursion set theory, in fact, the "local" contribution vanishes (for all odd-point correlators the contribution of the image gaussian cancels the Press-Schechter contribution rather than adding up), and the result comes entirely from non-trivial memory terms which are absent in PS theory. However it turns out that, in the limit of large halo masses, where the effect of non-Gaussianity is more relevant, these memory terms give a contribution which is the the same as that computed naively with PS theory, plus subleading terms depending on derivatives of the three-point correlator. We finally combine these results with the diffusive barrier model developed in the second paper of this series, and we find that the resulting mass function reproduces recent N-body simulations with non-Gaussian initial conditions, without the introduction of any ad hoc parameter.
description: 15 pages. v3: updated comment on the literature; v4; conceptual improvements; typos corrected
Characterization of horizontal flows around solar pores from high-resolution time series of images
Creators: name: Dominguez, S. Vargas
name: de Vicente, A.
name: Bonet, J. A.
name: Pillet, V. Martinez
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Though there is increasing evidence linking the moat flow and the Evershed flow along the penumbral filaments, there is not a clear consensus regarding the existence of a moat flow around umbral cores and pores, and the debate is still open. Solar pores appear to be a suitable scenario to test the moat-penumbra relation as evidencing the direct interaction between the umbra and the convective plasma in the surrounding photosphere, without any intermediate structure in between. The present work studies solar pores based on high resolution ground-based and satellite observations. Local correlation tracking techniques have been applied to different-duration time series to analyze the horizontal flows around several solar pores. Our results establish that the flows calculated from different solar pore observations are coherent among each other and show the determinant and overall influence of exploding events in the granulation around the pores. We do not find any sign of moat-like flows surrounding solar pores but a clearly defined region of inflows surrounding them. The connection between moat flows and flows associated to penumbral filaments is hereby reinforced by this work.
description: 10 pages, 10 figures, Accepted for publication in Astronomy and Astrophysics.
Towards a manifestly supersymmetric action for 11-dimensional supergravity
Creators: name: Cederwall, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the possibility of writing a manifestly supersymmetric action for 11-dimensional supergravity. The construction involves an explicit relation between the fields in the super-vielbein and the super-3-form, and uses non-minimal pure spinors. A simple cubic interaction term for a single scalar superfield is found.
description: 22 pp., plain tex. v2: references added
The Impact of New Technologies in Public Financial Management and Performance: Agenda for Public Financial Management Reformance in the Context of Global Best Practices
Creators: name: David, Amos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Information and Communication Technologies (ICT) has practically penetrated into all spheres of life. Therefore a closer look at the impact of ICT in public financial management and performance is highly justified. Public finance is defined as a field of economics concerned with paying for collective or governmental activities, and with the administration and design of those activities. Activities will be viewed as services or more precisely as public services. We believe that there is need to consider performance from the perspective of effective performance and the perceived performance. In fact the real or effective performance might not correspond to the perceived performance. A service can be considered from the perspective of the decision-maker, who in our case could be a government or a collectivity. ICT can be employed in the three phases that concern the decision-maker: design, implementation and evaluation. The beneficiaries of a service can employ ICT in any of the three phases - awareness, exploitation and assessment - for guarantying a high level of efficiency. Each phase in the environment of a service will be presented as well as illustrations of how ICT can be employed in order to improve the end-result of each one of them. We believe that a high efficiency of each phase will produce a high global efficiency. It should be noted however that the effectiveness of any system is highly dependent on the human engagement in the system. Therefore, the impact of ICT in public financial management will be felt only if the decision-makers and the end-users of the services engage themselves in the success of the system. Instead of giving a catalog of services, the focus has been on the model (or methodology) to adopt in designing services for which ICT could enhance the implementation.
A characterization of the disc through a hessian equality
Creators: name: Blaier, Netanel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 26D10, 58E35

description: Let M be a bounded open plane domain. Let f be a continuous function on the closure of M, 3-times continuously differentiable in M, which vanish on the boundary. Polterovich and Sodin proved that the values of f cannot exceed the norm of the hessian of f, averaged over the entire domain M. In this paper we study the equality case for this inequality. We show that equality holds if and only if M is a open disc and f belongs to a special class of radial functions.
Using wearable sensors to characterize neck muscle activation patterns during soccer heading at different kinematics levels
Creators: name: Shepherd, Keili
Publisher: name: University of British Columbia
Year: 2024

description: Soccer players experience repetitive subconcussive impacts during heading, which may cause long-term neurological damage. Neck muscle strength and activation have been suggested to mitigate head impacts and decrease the risk of brain injury. Specifically, increasing neck muscle activation before and during head impacts may decrease head kinematics parameters related to brain injury. However, studies have primarily investigated muscle activation in laboratory environments, where head impacts are typically of lower magnitude than real-life events. We recruited 10 participants with previous soccer heading experience and instrumented them with wearable sensors to collect neck muscle activation and head impact kinematics during soccer headers. Before conducting participant experiments, we created a custom wearable sensor system and designed a circuit to time synchronize muscle activity and kinematics. We characterized neck muscle activation, timing, magnitude, and co-contraction patterns using electromyography (EMG) and peak head kinematics using a custom instrumented mouthguard (iMG). We found that the neck muscles were actively engaged around the time of impact, and that peak activation magnitude increased when soccer balls were delivered at higher speeds. However, the timing and magnitude of the activation were not always maximized for head stabilization. Our findings suggest players may benefit from training to improve the timing of muscle engagement to maximize their stabilization potential and reduce head kinematics.
Ab initio structure modeling of complex thin-film oxides: thermodynamical stability of TiC/thin-film alumina
Creators: name: Rohrer, Jochen
name: Ruberto, Carlo
name: Hyldgaard, Per
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an efficient and general method to identify promising candidate configurations for thin-film oxides and to determine structural characteristics of (metastable) thin-film structures using ab initio calculations. At the heart of this method is the complexity of the oxide bulk structure, from which a large number of thin films with structural building blocks, that is motifs, from metastable bulk oxide systems can be extracted. These span a coarse but well-defined network of initial configurations for which density functional theory (DFT) calculations predict and implement dramatic atomic relaxations in the corresponding, resulting thin-film candidates. The network of thin-film candidates (for various film thicknesses and stoichiometries) can be ordered according to their variation in ab initio total energy or in ab initio equilibrium Gibbs free energy. Analysis of the relaxed atomic structures for the most favored structures gives insight into the nature of stable and metastable thin-film oxides. We investigate ultrathin alumina nucleated on TiC as a model system to illustrate this method.
description: Submitted to PRB; 16 pages, 11 figures
Detection of Denial of Service Attacks against Domain Name System Using Neural Networks
Creators: name: Rastegari, Samaneh
name: Saripan, M. Iqbal
name: Rasid, Mohd Fadlee A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cryptography and Security (cs.CR)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: In this paper we introduce an intrusion detection system for Denial of Service (DoS) attacks against Domain Name System (DNS). Our system architecture consists of two most important parts: a statistical preprocessor and a neural network classifier. The preprocessor extracts required statistical features in a shorttime frame from traffic received by the target name server. We compared three different neural networks for detecting and classifying different types of DoS attacks. The proposed system is evaluated in a simulated network and showed that the best performed neural network is a feed-forward backpropagation with an accuracy of 99%.
description: International Journal of Computer Science Issues, IJCSI Volume 6, Issue 1, pp23-27, November 2009
Stau detection at neutrino telescopes in scenarios with supersymmetric dark matter
Creators: name: Canadas, B.
name: Cerdeno, D. G.
name: Munoz, C.
name: Panda, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have studied the detection of long-lived staus at the IceCube neutrino telescope, after their production inside the Earth through the inelastic scattering of high energy neutrinos. The theoretical predictions for the stau flux are calculated in two scenarios in which the presence of long-lived staus is naturally associated to viable supersymmetric dark matter. Namely, we consider the cases with superWIMP (gravitino or axino) and neutralino dark matter (along the coannihilation region). In both scenarios the maximum value of the stau flux turns out to be about 1 event/yr in regions with a light stau. This is consistent with light gravitinos, with masses constrained by an upper limit which ranges from 0.2 to 15 GeV, depending on the stau mass. Likewise, it is compatible with axinos with a mass of about 1 GeV and a very low reheating temperature of order 100 GeV. In the case of the neutralino dark matter this favours regions with a low value of tan(beta), for which the neutralino-stau coannihilation region occurs for smaller values of the stau mass. Finally, we study the case of a general supergravity theory and show how for specific choices of non-universal soft parameters the predicted stau flux can increase moderately.
description: 26 pages, 7 figures. References added and minor changes. Final version to appear in JCAP
Development and commissioning of a new readout system for the gas flow of the Belle II $K_L^0$ and muon detector
Creators: name: Applegate, Travis
name: Brenny, Noah
name: Chen, Chunhui
name: Choudhury, Seema
name: Cochran, James
name: Kang, Shuaiyan
name: Khatri, Avinash
name: Kindo, Haruki
name: Lam, Tommy
name: Mitra, Sayan
name: Mubarak, Adil
name: Piilonen, Leo
name: Prell, Soeren
name: Veronesi, Michele
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have designed and commissioned a new readout board to detect photosensor signals from gas-bubbler panels to continuously monitor the gas flow through the resistive plate chambers of the $K_L^0$ and muon detector of Belle II. The gas flow measurements have been integrated into Belle II's alarm system. The bubbler-monitoring system was first employed during the February 2024 to July 2024 Belle II data-taking period.
description: 5 pages, 7 figures
The Truth is Everywhere: Reconceptualizing Far-Right Conspiracy Theories in the Information Age
Creators: name: Popp, Ben A.
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: conspiracy theories
subject: post-truth
subject: extremism
subject: political violence
subject: far-right

description: Despite the evident association between the political right and conspiracy theories in the United States and Europe, the role of conspiracy theories in right-wing extremist movements is often overlooked by contemporary scholars. What is more, the corpus of conspiracy theory-related literature collectively fails to account for the resurgent popularity of these narratives, with some scholars portraying belief in conspiracy theories as symptoms of an irrational and paranoid worldview, and others arguing that conspiracy theories have been stigmatized and marginalized by academics, elite journalists, and intellectuals. Both of these perspectives, as this paper demonstrates, inaccurately relegate conspiracy theories to the fringes of society. The field of conspiracy theory studies must now turn toward understanding how these narratives shape and interact with ideology, and influence political behavior and acts of violence, a task for which interpretive perspectives are uniquely suited. Consequently, this paper reexamines the contemporary right and its significant association with conspiracy theories in order to provide a new theoretical framework for future research.
Phase noise and laser-cooling limits of optomechanical oscillators
Creators: name: Yin, Zhang-qi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The noise from laser phase fluctuation sets a major technical obstacle to cool the nano-mechanical oscillators to the quantum region. We propose a cooling configuration based on the opto-mechanical coupling with two cavity modes to significantly reduce this phase noise by $(2ω_m/γ)^2$ times, where $ω_m$ is the frequency of the mechanical mode and $γ$ is the decay rate of the cavity mode. We also discuss the detection of the phonon number when the mechanical oscillator is cooled near the quantum region and specify the required conditions for this detection.
description: 5 pages, 2 figures, comments are welcome; reference is updated. A note is added on a similar paper recently published; revised and accepted for PRA
Presentation: Comparative Longitudinal Analysis on Global Inflation with a special emphasis on Indian Economy
Creators: name: Sharma, Ram
Publisher: name: Zenodo
Year: 2022
Subjects: Ram Sharma
Ram Sharma DCBM
Ram Sharma Research
DCBM research
Inflation
Indian economy
Presentation on inflation
Housing markets

description: This is the conference presentation of the research study Comparative Longitudinal Analysis on Global Inflation with a special emphasis on Indian Economy The economic fluctuations in Indian housing markets have been time and again proved to be led by inflation (Granger Cause) (Richa Pandey & V. Mary Jessica, 2020).
 The purpose of this study is to perform a comparative longitudinal analysis on Global Inflation with a special emphasis on Indian Economy.
 The study aims to observe the positive cause-effect relationship between the rise of money supply and circulation in the economy and the succeeding rise in housing prices.

 As Gregory Wolfe theorised, “The inflation of our time is intimately connected with some of its most obdurate ideas, forces, postulates, and institutions and can be overcome only by influencing these profound causes and conditions. It is not just a disorder of the monetary system which can be left to financial experts to redress, it is a moral disease, a disorder of society. This inflation, too, belongs to the things which can be understood and remedied only in the area beyond supply and demand.”
 Friedman’s permanent income hypothesis suggests that people would change their desired consumption if changes in housing prices affect their expected lifetime wealth. Moreover, an inflationary housing market can be termed essentially, as one of the most major contributors to a nation’s overall inflation (Jared Bernstein, Ernie Tedeschi, and Sarah Robinson, 2021).
 A comparative longitudinal analysis on inflation can provide significant insights into the evolution of prices over time. By comparing inflation rates across different countries, researchers can identify patterns and commonalities that can help explain the underlying causes of inflation.
 Additionally, by looking at inflation over a long period of time, this research can help economists, administrators and businesses in identifying periods of high and low inflation to investigate the factors that may have contributed to these changes.

 In general, inflation is defined as a sustained increase in the price level of goods and services in an economy. Over time, inflation can erode the purchasing power of a currency, as prices for goods and services rise faster than the currency’s value. There are a variety of factors that can contribute to inflation, including increases in the cost of production, changes in monetary policy, and demand-side pressures.
description: {"references": ["Sharma, Ram. (2022). Comparative Longitudinal Analysis on Global Inflation with a special emphasis on Indian Economy. A Flourishing Digital Era: Innovations in Industry, Education, Management and Society, 1(1), 903. https://doi.org/10.5281/zenodo.7939068"]}
NFDI4Cat Newsletter Issue #1 - November 2021
Creators: name: Espinoza, Sara
name: Bohmer, Nils
Publisher: name: Zenodo
Year: 2021
Subjects: catalysis
Research Data Managment
NFDI

description: This is the first issue of the NFDI4Cat newsletter. The NFDI4Cat newsletter is a short compilation about our project results. A short and concise overview that keeps you up to date with our work. You can subscribe here!