cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nuclear suppression of dileptons at forward rapidities
Creators: name: Cepila, J.
name: Nemchik, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Data from E772 and E866 experiments on the Drell-Yan process exhibit a significant nuclear suppression at large Feynman xF. We show that a corresponding kinematic region does not allow to interpret this as a manifestation of coherence or a Color Glass Condensate. We demonstrate, however, that this suppression can be treated alternatively as an effective energy loss proportional to initial energy. To eliminate suppression coming from the coherence, we perform predictions for nuclear effects also at large dilepton masses. Our calculations are in a good agreement with available data. Since the kinematic limit can be also approached in transverse momenta pT, we present in the RHIC energy range corresponding predictions for expected large-pT suppression as well. Since a new experiment E906 planned at FNAL will provide us with more precise data soon, we present also predictions for expected large-xF nuclear suppression in this kinematic region.
description: 6 pages, 4 figures. Talk given at the International Nuclear Physics Conference (INPC-2010), Vancouver, Canada July 4 - 9, 2010
A Simple Derivation of Supersymmetric Extremal Black Hole Attractors
Creators: name: Ortin, Tomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a simple and yet rigorous derivation of the flow equations for the supersymmetric black-hole solutions of all 4-dimensional supergravities based on the recently found general form of all those solutions.
description: 9 pages, latex2e file, no figures. Several references added
Two Channel Filter Banks on Arbitrary Graphs with Positive Semi Definite Variation Operators
Creators: name: Pavez, Eduardo
name: Girault, Benjamin
name: Ortega, Antonio
name: Chou, Philip A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose novel two-channel filter banks for signals on graphs. Our designs can be applied to arbitrary graphs, given a positive semi definite variation operator, while using arbitrary vertex partitions for downsampling. The proposed generalized filter banks (GFBs) also satisfy several desirable properties including perfect reconstruction and critical sampling, while having efficient implementations. Our results generalize previous approaches that were only valid for the normalized Laplacian of bipartite graphs. Our approach is based on novel graph Fourier transforms (GFTs) given by the generalized eigenvectors of the variation operator. These GFTs are orthogonal in an alternative inner product space which depends on the downsampling and variation operators. Our key theoretical contribution is showing that the spectral folding property of the normalized Laplacian of bipartite graphs, at the core of bipartite filter bank theory, can be generalized for the proposed GFT if the inner product matrix is chosen properly. In addition, we study vertex domain and spectral domain properties of GFBs and illustrate their probabilistic interpretation using Gaussian graphical models. While GFBs can be defined given any choice of a vertex partition for downsampling, we propose an algorithm to optimize these partitions with a criterion that favors balanced partitions with large graph cuts, which are shown to lead to efficient and stable GFB implementations. Our numerical experiments show that partition-optimized GFBs can be implemented efficiently on 3D point clouds with hundreds of thousands of points (nodes), while also improving the color signal representation quality over competing state-of-the-art approaches.
description: 19 pages, 12 Figures
Tradeoff relations in open quantum dynamics via Robertson, Maccone-Pati, and Robertson-Schrödinger uncertainty relations
Creators: name: Nishiyama, Tomohiro
name: Hasegawa, Yoshihiko
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Heisenberg uncertainty relation, together with Robertson's generalisation, serves as a fundamental concept in quantum mechanics, showing that noncommutative pairs of observables cannot be measured precisely. In this study, we explore the Robertson-type uncertainty relations to demonstrate their effectiveness in establishing a series of thermodynamic uncertainty relations and quantum speed limits in open quantum dynamics. The derivation utilises a scaled continuous matrix product state representation that maps the time evolution of the quantum continuous measurement to the time evolution of the system and field. Specifically, we consider the Maccone-Pati uncertainty relation, a refinement of the Robertson uncertainty relation, to derive thermodynamic uncertainty relations and quantum speed limits. These newly derived relations, which use a state orthogonal to the initial state, yield bounds that are tighter than previously known bounds. Moreover, we consider the Robertson-Schrödinger uncertainty, which extends the Robertson uncertainty relation. Our findings not only reinforce the significance of the Robertson-type uncertainty relations, but also expand its applicability in identifying uncertainty relations in open quantum dynamics.
description: 22 pages, 1 figure, 1 table
Additional file 1 of Biochemical and transcriptomic analyses of the symbiotic interaction between Cremastra appendiculata and the mycorrhizal fungus Coprinellus disseminatus
Creators: name: Gao, Yanyan
name: Ji, Jun
name: Zhang, Yujin
name: Yang, Ningxian
name: Zhang, Mingsheng
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1: Fig. S1. GC-MS analysis of the chemical compositions of lignocellulose degradation products during symbiotic germination. Fig. S2. NR annotated species distribution of Cremastra appendiculata. Dendrobium catenatum shows the highest similarity. Fig. S3. GO function annotation. The most abundant functions are binding and catalytic activity in terms of molecular function and cellular anatomical entity in terms of cellular component. Fig. S4. Variation of the enzymes during symbioses. Fig. S5. Variation of the reducing sugar concentration produced in the OMA medium during symbioses.
Uniform observation of semiclassical Schr{ö}dinger eigenfunctions on an interval
Creators: name: Laurent, Camille
name: Léautaud, Matthieu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We consider eigenfunctions of a semiclassical Schr{ö}dinger operator on an interval, with a single-well type potential and Dirichlet boundary conditions. We give upper/lower bounds on the L^2 density of the eigenfunctions that are uniform in both semiclassical and high energy limits. These bounds are optimal and are used in an essential way in a companion paper in application to a controllability problem. The proofs rely on Agmon estimates and a Gronwall type argument in the classically forbidden region, and on the description of semiclassical measures for boundary value problems in the classically allowed region. Limited regularity for the potential is assumed.
Casimir force for cosmological domain walls
Creators: name: Matsuda, Tomohiro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the vacuum fluctuations that may affect the evolution of cosmological domain walls. Considering domain walls, which are classically stable and have interaction with a scalar field, we show that explicit symmetry violation in the interaction may cause quantum bias that can solve the cosmological domain wall problem.
description: 15 pages, 2figures
Fermionic and Bosonic Greybody Factors as well as Quasinormal Modes for Charged Taub NUT Black Holes
Creators: name: Al-Badawi, Ahmad
name: Kanzi, Sara
name: Sakallı, İzzet
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper studies the spinorial wave equations, namely the Dirac and the Klein Gordon equations, as well as the greybody radiations and quasinormal modes (QNMs) of the charged Taub NUT black hole (CTNBH). To obtain fermionic greybody factors (GFs) and QNMs, we study the charged fermions by employing the Dirac equation. To this end, we use a null tetrad in the Newman-Penrose formalism. Then, we separate the Dirac equation into radial and angular sets. Using the obtained radial equations, we convert them into the typical one dimensional Schrödinger like wave equations with the aid of tortoise coordinate and derive the effective potentials. For bosonic GFs and QNMs, we study the Klein Gordon equation in the CTNBH geometry and obtain the radial equation. We then derive the effective potential and investigate the effect of NUT parameter on it. We show that while the fermionic QNMs and GFs individually increase with the increasing NUT parameter, the increase of bosonic GFs with increasing NUT parameter is overwhelmingly greater than that of the bosonic QNMs.
Darwinian Evolution of Cooperation via Punishment in the "Public Goods" Game
Creators: name: Hintze, Arend
name: Adami, Christoph
Publisher: name: arXiv
Year: 2010
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The evolution of cooperation has been a perennial problem for evolutionary biology because cooperation is undermined by selfish cheaters (or "free riders") that profit from cooperators but do not invest any resources themselves. In a purely "selfish" view of evolution, those cheaters should be favored. Evolutionary game theory has been able to show that under certain conditions, cooperation nonetheless evolves stably. One of these scenarios utilizes the power of punishment to suppress free riders, but only if players interact in a structured population where cooperators are likely to be surrounded by other cooperators. Here we show that cooperation via punishment can evolve even in well-mixed populations that play the "public goods" game, if the synergy effect of cooperation is high enough. As the synergy is increased, populations transition from defection to cooperation in a manner reminiscent of a phase transition. If punishment is turned off, the critical synergy is significantly higher, illustrating that (as shown before) punishment aids in establishing cooperation. We also show that the critical point depends on the mutation rate so that higher mutation rates discourage cooperation, as has been observed before in the Prisoner's Dilemma.
description: 7 pages, 6 figures, requires alifex11.sty. To appear in Proc. of 12th International Conference on Artificial Life (Odense, DK)
Controlling electron-phonon interactions in graphene at ultra high carrier densities
Creators: name: Efetov, Dmitri K.
name: Kim, Philip
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the temperature dependent electron transport in graphene at different carrier densities $n$. Employing an electrolytic gate, we demonstrate that $n$ can be adjusted up to 4$\times10^{14}$cm$^{-2}$ for both electrons and holes. The measured sample resistivity $ρ$ increases linearly with temperature $T$ in the high temperature limit, indicating that a quasi-classical phonon distribution is responsible for the electron scattering. As $T$ decreases, the resistivity decreases more rapidly following $ρ(T) \sim T^{4}$. This low temperature behavior can be described by a Bloch-Grüneisen model taking into account the quantum distribution of the 2-dimensional acoustic phonons in graphene. We map out the density dependence of the characteristic temperature $Θ_{BG}$ defining the cross-over between the two distinct regimes, and show, that for all $n$, $ρ(T)$ scales as a universal function of the normalized temperature $T/Θ_{BG}$.
Flat structures on surface bundles
Creators: name: Bowden, Jonathan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We show that there exist flat surface bundles with closed leaves having non-trivial normal bundles. This leads us to compute the Abelianisation of surface diffeomorphism groups with marked points. We also extend a formula of Tsuboi that expresses the Euler class of a flat circle bundle in terms of the Calabi invariant of certain Hamiltonian diffeomorphisms to surfaces of higher genus and derive a similar formula for the first MMM-class of surface bundles with punctured fibre.
Quantitative characterisation of the layered structure within lithium-ion batteries using ultrasonic resonance
Creators: name: Huang, Ming
name: Kirkaldy, Niall
name: Zhao, Yan
name: Patel, Yatish
name: Cegla, Frederic
name: Lan, Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lithium-ion batteries (LIBs) are becoming an important energy storage solution to achieve carbon neutrality, but it remains challenging to characterise their internal states for the assurance of performance, durability and safety. This work reports a simple but powerful non-destructive characterisation technique, based on the formation of ultrasonic resonance from the repetitive layers within LIBs. A physical model is developed from the ground up, to interpret the results from standard experimental ultrasonic measurement setups. As output, the method delivers a range of critical pieces of information about the inner structure of LIBs, such as the number of layers, the average thicknesses of electrodes, the image of internal layers, and the states of charge variations across individual layers. This enables the quantitative tracking of internal cell properties, potentially providing new means of quality control during production processes, and tracking the states of health and charge during operation.
description: 30 pages, 6 figures, 1 table, submitted to Journal of Energy Storage, added the second to last paragraph in the Introduction
Future cosmological evolution in $f(R)$ gravity using two equations of state parameters
Creators: name: Lee, Hyung Won
name: Kim, Kyoung Yee
name: Myung, Yun Soo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the issues of future oscillations around the phantom divide for $f(R)$ gravity. For this purpose, we introduce two types of energy density and pressure arisen from the $f(R)$-higher order curvature terms. One has the conventional energy density and pressure even in the beginning of the Jordan frame, whose continuity equation provides the native equation of state $w_{\rm DE}$. On the other hand, the other has the different forms of energy density and pressure which do not obviously satisfy the continuity equation. This needs to introduce the effective equation of state $w_{\rm eff}$ to describe the $f(R)$-fluid, in addition to the native equation of state $\tilde{w}_{\rm DE}$. We confirm that future oscillations around the phantom divide occur in $f(R)$ gravities by introducing two types of equations of state. Finally, we point out that the singularity appears ar $x=x_c$ because the stability condition of $f(R)$ gravity violates.
description: 23 pages, 10 figures, correcting typing mistake in title
Aenictus villiersi Bernard 1953
Creators: name: Gómez, Kiko
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Aenictus
Aenictus villiersi

description: Aenictus villiersi Bernard, 1953 Aenictus villiersi BERNARD, 1953: 221, fig. 7 (w.) Syntypes, GUINEA: forêt du Nimba nord est, 700 m. ix-1946 (Villiers) (4w) [EY9136, EY20210, EY20211, EY20212]. Material examined and remounted on four different pins, EY9136 with original labels. DESCRIPTION (Fig. 9 A–D). WORKER: HL: 0.71 [0.70-0.73]; HW: 0.72 [0.70-0.74]; SL: 0.7 [0.69-0.72]; WL: 1.21 [1.14-1.26]; PL: 0.27 [0.26-0.28]; PH: 0.21 [0.21-0.22]; PPL: 0.23 [0.21- 0.23]; PPH: 0.18 [0.17-0.18]; CS: 0.71 [0.7-0.72]; CI: 101 [98-105]; SIL: 99 [95-102]; SIW: 97 [94-102]; WL/HW: 167 [163-170]; PI: 125 [118-133]; PPI: 128 [116-135]; CSR: 102; (n=4). Aenictus villiersi fits the description of A. batesi and A. decolor, except for SIL considerably larger, the biggest of all the Afrotropical species (~100), subpetiolar process considerably smaller and shaped as a quarter of ellipse with its vertical side oriented forward, instead of subrectangular as in the other two sibling species. Petiole with dorsolateral ridges small but present, extending to the spiracle; in dorsal view forming a small flat platform differentiable from petiolar node (this character also present in some A. decolor samples). Also see discussion under A. bidentatus. OTHER MATERIAL EXAMINED. GUINEA: • Nzérékoré, Forêt Mt Leclerc (Mount Nimba), 7.66878, -8.41697 19/04/2017. Monolithe (Kolo, Y.). Forest (1w) [KY00118GUI] YKPC. DISTRIBUTION. West Africa, known only from one location, Mount Nimba in Guinea (Fig. 10).
description: Published as part of Gómez, Kiko, 2022, A revision of the Afrotropical species of the Dorylinae ant genus Aenictus (Hymenoptera: Formicidae) based on the worker caste, pp. 1-86 in Belgian Journal of Entomology 124 on page 24, DOI: 10.5281/zenodo.5898821
description: {"references": ["BERNARD F., 1953 (\" 1952 \"). - La reserve naturelle integrale du Mt Nimba. XI. Hymenopteres Formicidae. Memoires de l'Institut Francais d'Afrique Noire, 19: 165 - 270."]}
BEHAVIOUR OF GEOGRID-REINFORCED  SAND BEDS
Creators: name: Singh, Abhishek
name: Prasad, Ram
Publisher: name: Zenodo
Year: 2019
Subjects: Plate load tests, Geogrid reinforcement, deformation, bearing capacity, relative density

description: Soft clays and loose sand beds pose the problems of poor bearing capacity and detrimental settlements. As a result, structures founded in these soils are subjected to distress and instability. Various ground improvement techniques have been devised for improving the bearing capacity and reducing settlements of these types of soils. Vibro compaction, stone columns, preloading with sand drains, chemical stabilization, lime soil piles and grouting have been some of the successful ground improvement techniques which the geotechnical engineers the world over have adopted in the profession. Reinforced earth is also one of very effective techniques to improve bearing capacity. Recently geosynthetic reinforcement of ground has been found as an important development in reinforced earth. Geotextiles, geofabrics and geogrids have been the reinforcement components used for improving bearing capacity of poor soils.

In this thesis a high density polyethylene geogrid has been used as horizontal reinforcement in a loose sand bed to improve its bearing capacity. A series of laboratory model tests was conducted to study the improvement in bearing capacity of fine sand, medium sand and coarse sand, all compacted to a relative density of 50%. A surface footing plate of diameter 60 mm was used as the shallow foundation. Circular geogrids of diameter 120 mm were used as reinforcement layers. The number of geogrids and the spacing between them were varied in the study. It was found that the horizontal geogrid reinforcement improved the bearing capacity of the loose sand layer. Bearing capacity was found to improve further with increase in number of geogrid layers and with decrease in spacing between them.
Development and characterization of yttria stabilized zirconia doped with erbia
Creators: name: Verdon, Christopher
Publisher: name: University of British Columbia
Year: 2015

description: Zirconia ceramics have high thermal resistance, chemical inertness and irradiation stability. One application where zirconia composites may find use is in supercritical water nuclear reactors (SCWR), which are expected to have improved thermal efficiency in comparison to current nuclear reactors. Zirconia ceramics may be useful as insulator materials in SCWR pressure tubes where high thermal resistance, chemical stability, irradiation resistance and supercritical water (SCW) degradation resistance are necessary. Additionally, some preliminary tests have found that specific zirconia composites, such as yttria stabilized zirconia (YSZ) outperform pure zirconia in SCW environments. YSZ is a commonly used zirconia composite, and has an excellent thermal resistance and chemical inertness. Due to the presence of yttrium, the high temperature brittle failure caused by the tetragonal to monoclinic crystal structure transformation frequently observed in zirconia is avoided. However, currently available YSZ does not fully satisfy the SCW degradation targets for a SCWR, thus motivating research into the possibility of doping YSZ to further improve YSZ’s SCW degradation resistance. One possible dopant is erbium oxide (erbia), a rare earth oxide that is used as a technical ceramic and has been studied for use in nuclear applications due to its ability to absorb neutrons. Erbia has not been studied in depth as a dopant in the zirconia system or in YSZ. Thus, this research was conducted in order to determine the effect of erbia doping on the densification, hardness, grain size, crystal lattice parameter and SCW degradation resistance of YSZ. Erbia-YSZ composites of 8mol% YSZ with 5, 10 and 15mol% erbia were fabricated by spark plasma sintering (SPS), a novel powder metallurgy process that is known to produce high density composites, at 1200, 1300 and 1400°C with 30 and 60MPa pressures for 5min. Densification during SPS was characterized based on ram position during sintering. Grain size analysis of the as-sintered composites was performed on fractured surfaces. A preliminary study of the SCW degradation resistance of the erbia-YSZ composites was conducted by exposing them to SCW for 2.5h in pressure vessels. The results suggest that erbia-YSZ composites with >95% theoretical density (TD) were successfully fabricated using SPS. Erbia doping into YSZ was found to inhibit densification, but promoted grain growth and resulted in crystal lattice expansion. Additionally, weight loss during SCW degradation revealed that erbia doping improved the SCW degradation resistance of YSZ, but additional work is necessary to further improve the degradation resistance to meet SCWR targets.
Coherence and control in photo-molecular wave packet dynamics
Creators: name: Han, Alex Chao
Publisher: name: University of British Columbia
Year: 2015

description: Wave-mechanical phenomena such as resonance and interference, in both light and matter, are central to the principles of quantum coherent control over molecular processes. Focusing on the dynamical aspects, this dissertation is a compilation of studies on the interaction physics involving wave packets in molecules, the driving light field, and the underlying coherence and control. In each work, we will demonstrate interesting correlations between the properties of a carefully designed excitation light field and desirable outcomes of the molecules quantum dynamics. We will analyze the dynamical effect of a Feshbach resonance in the adiabatic Raman photoassociation for ultracold diatomic molecule formation from ultracold atoms. A narrow resonance is shown to be able to increase the effective number of collisions, in an ultracold atomic gas, that are available for photoassociation. This results in an optimal resonance width much smaller than the atomic collision energy bandwidth, due to the balance between the effective collision rate and single-collision transfer probability. Next, we demonstrate the linear molecular response to high-intensity, broadband, shaped optical fields. We show that this originates from interferences based on intra-pulse Raman excitations, and thus response linearity is not unique to the first-order perturbative limit and can not be used to infer the strength of the field. In the last study, we simulate the stochastic vibrational wave packet and dissociation-flux dynamics in a molecule excited by light with temporal and spectral incoherent properties. Between this case and that using a coherent pulse with the same spectral profile, we compare the vibrational wave functions and the loss of electronic and vibrational coherence, and demonstrate the qualitative difference between coherently and incoherently driven dynamics in molecules.
Probing the Jaynes-Cummings Ladder with Spin Circuit Quantum Electrodynamics
Creators: name: Bonsen, Tobias
name: Harvey-Collard, Patrick
name: Russ, Maximilian
name: Dijkema, Jurgen
name: Sammak, Amir
name: Scappucci, Giordano
name: Vandersypen, Lieven M. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report observations of transitions between excited states in the Jaynes-Cummings ladder of circuit quantum electrodynamics with electron spins (spin circuit QED). We show that unexplained features in recent experimental work correspond to such transitions and present an input-output framework that includes these effects. In new experiments, we first reproduce previous observations and then reveal both excited-state transitions and multiphoton transitions by increasing the probe power and using two-tone spectroscopy. This ability to probe the Jaynes-Cummings ladder is enabled by improvements in the coupling-to-decoherence ratio, and shows an increase in the maturity of spin circuit QED as an interesting platform for studying quantum phenomena.
description: 12 pages, 7 figures
Quantum quench influenced by an excited-state phase transition
Creators: name: Perez-Fernandez, P.
name: Cejnar, P.
name: Arias, J. M.
name: Dukelsky, J.
name: Garcia-Ramos, J. E.
name: Relano, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It is shown that the presence of the ESQPT in these models affects the quantum relaxation processes following an abrupt quench in the control parameter. Clear cut evidence of the ESQPT effects is presented in integrable models, while in the nonintegrable model the evidence is blurred due to chaotic behavior of the system in the region around the critical energy.
description: submitted to Physical Review A
ГЕНДЕРНЫЕ ОСОБЕННОСТИ СТЕНОКАРДИИ НАПРЯЖЕНИЯ В ИММУНОЛОГИЧЕСКОМ АСПЕКТЕ
Creators: name: Камилова, Шахзода
Publisher: name: Zenodo
Year: 2023

description: ИБС является ведущей причиной смертности во всем мире. Несмотря на то, что распространенность ИБС продолжает увеличиваться, в Европе отмечается снижение уровня смертности, ассоциированной с ИБС за  последние десятилетия [3].
Tau polarization measurements at the LHC in supersymmetric models with a long-lived stau
Creators: name: Kitano, Ryuichiro
name: Nakamura, Mitsutoshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Supersymmetry (SUSY) with a long-lived stau is an attractive scenario in the LHC experiments because one can directly observe stau tracks in each SUSY event, and thus precise measurements of SUSY particle masses are possible. In this scenario, we discuss the possibility to observe/measure parity violation in interactions among SUSY particles. Such a measurement will be important in determining spins and chiralities of SUSY particles. We use the last step of the cascade-decay chain: $χ^0\to\tildeττ\to\tildeτ(lν\barν)$, where the polarization of the tau lepton can be determined statistically by looking at the energy distribution of the final state lepton. Comparing with the theoretical formula of the neutralino differential decay width, one can extract the size of parity violation in the interaction vertices among the stau, the tau lepton and the neutralino. We perform a Monte Carlo simulation to see if the effect is visible at the LHC experiments.
The dark matter halo density profile, spiral arm morphology and black hole mass of M33
Creators: name: Seigar, Marc S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper, we investigate the dark matter halo density profile of M33. We find that the HI rotation curve of M33 is best described by a NFW dark matter halo density profile model, with a halo concentration of cvir = 4.0\pm1.0 and a virial mass of Mvir = (2.2\pm0.1)\times10^11 Msun. We go on to use the NFW concentration (cvir)of M33, along with the values derived for other galaxies (as found in the literature), to show that cvir correlates with both spiral arm pitch angle and supermassive black hole mass.
description: 18 pages, accepted for publication
New development of realistic J-matrix inverse scattering NN interaction and ab initio description of light nuclei
Creators: name: Shirokov, A. M.
name: Kulikov, V. A.
name: Maris, P.
name: Mazur, A. I.
name: Mazur, E. A.
name: Vary, J. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the studies of light nuclei in ab initio No-core Full Configuration approach based on extrapolations to the infinite model space of large-scale No-core Shell Model calculations on supercomputers. The convergence at the end of p shell and beginning of the sd shell can be achieved if only reasonable soft enough NN interactions are used. In particular, good predictions are obtained with a realistic JISP16 NN interaction obtained in J-matrix inverse scattering approach and fitted to reproduce light nuclei observables without three-nucleon forces. We discuss the current status of this NN interaction and its recent development.
description: 8 pages, 1 figure; to be published in proceedings of the 3rd International Conference Current Problems in Nuclear Physics and Atomic Energy (NPAE-Kyiv2010), June 7-12, 2010, Kyiv, Ukraine
Aenictus Emery 1895
Creators: name: Gómez, Kiko
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Aenictus

description: eugenii species group DIAGNOSIS. This group is easily recognizable due to the linear mandibles that leave a gap against the clypeus when closed and have their clypeus reduced to two triangular denticles between (A. eugenii) or beneath (A. mvuvii sp. nov.) the antennal sockets, exceptionally with another two–four smaller denticles outside the antennal sockets. Pronotum convex and propodeum flat to slightly convex in lateral view; transverse mesopleural groove and mesometapleural suture present but not deeply impressed. Propodeal declivity slightly convex, encircled by a well-developed ridge. Femora and tibiae with its apical half swollen. OVERVIEW. Two species in this group. Aenictus eugenii is a big species (HW 0.60-0.95) with relatively long scapes (SIL 70-85) and long, semierect to erect unequal setae, while A. mvuvii sp. nov. is clearly smaller (HW ∼ 0.50) with shorter scapes (SIL ∼ 52) and appressed setae quite regular in size. These species seem to have different distributions, with A. eugenii being Southern and Eastern African and A. mvuvii sp. nov. restricted to West Africa.
description: Published as part of Gómez, Kiko, 2022, A revision of the Afrotropical species of the Dorylinae ant genus Aenictus (Hymenoptera: Formicidae) based on the worker caste, pp. 1-86 in Belgian Journal of Entomology 124 on page 25, DOI: 10.5281/zenodo.5898821
Retailer response to wholesale stockouts
Creators: name: Liberopoulos, George
Publisher: name: Zenodo
Year: 2012
Subjects: Stockouts
Lost sales
Future demand
Statistical analysis
Historical data

description: Purpose – The purpose of this paper is to identify the immediate and future retailer response to wholesale stockouts.

Design/methodology/approach – We perform a statistical analysis of historical customer order and delivery data of a local tool wholesaler and distributor, whose customers are retailers, over a period of four years. We investigate the effect of customer service on the order fill rate and the rate of future demand, where the customer service is defined in terms of timely delivery and the fill rate is defined as the fraction of the order that is eventually materialized, i.e., is not cancelled following a stockout.

Findings – We find that for customers who order frequently, stockouts have an adverse effect on the fill rate of their orders and on the frequency but not the value of their future demand; however, this latter effect seems to be more short-term than long-term.

Originality/value – Practically all studies on the effects of stockouts measure immediate reported/intended consumer purchase incidence and choice decision behavior in response to stockouts in retail environments, mostly based on surveys. This study looks at how stockouts affect future demand in a wholesale environment, based on historical behavioral data analysis.
Spin-phonon coupling in single Mn doped CdTe quantum dot
Creators: name: Cao, C. L.
name: Besombes, L.
name: Fernández-Rossier, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin dynamics of a single Mn atom in a laser driven CdTe quantum dot is addressed theoretically. Recent experimental results\cite{Le-Gall_PRL_2009,Goryca_PRL_2009,Le-Gall_PRB_2010}show that it is possible to induce Mn spin polarization by means of circularly polarized optical pumping. Pumping is made possible by the faster Mn spin relaxation in the presence of the exciton. Here we discuss different Mn spin relaxation mechanisms. First, Mn-phonon coupling, which is enhanced in the presence of the exciton. Second, phonon-induced hole spin relaxation combined with carrier-Mn spin flip coupling and photon emission results in Mn spin relaxation. We model the Mn spin dynamics under the influence of a pumping laser that injects excitons into the dot, taking into account exciton-Mn exchange and phonon induced spin relaxation of both Mn and holes. Our simulations account for the optically induced Mn spin pumping.
description: 17 pages, 11 figures, submitted to PRB
Computing the action ground state for the rotating nonlinear Schrödinger equation
Creators: name: Liu, Wei
name: Yuan, Yongjun
name: Zhao, Xiaofei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35B38, 35Q55, 65N12, 81-08

description: We consider the computations of the action ground state for a rotating nonlinear Schrödinger equation. It reads as a minimization of the action functional under the Nehari constraint. In the focusing case, we identify an equivalent formulation of the problem which simplifies the constraint. Based on it, we propose a normalized gradient flow method with asymptotic Lagrange multiplier and establish the energy-decaying property. Popular optimization methods are also applied to gain more efficiency. In the defocusing case, we prove that the ground state can be obtained by the unconstrained minimization. Then the direct gradient flow method and unconstrained optimization methods are applied. Numerical experiments show the convergence and accuracy of the proposed methods in both cases, and comparisons on the efficiency are discussed. Finally, the relation between the action and the energy ground states are numerically investigated.
description: 26 pages, 9 figures
Modulation Mechanism of TeV, GeV, and X-ray Emission in LS5039
Creators: name: Yamaguchi, Masaki
name: Takahara, Fumio
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The emission mechanism of the gamma-ray binary LS5039 in energy bands of TeV, GeV, and X-ray is investigated. Observed light curves in LS5039 show that TeV and GeV fluxes anticorrelate and TeV and X-ray fluxes correlate. However, such correlated variations have not been explained yet reasonably at this stage. Assuming that relativistic electrons are injected constantly at the location of the compact object as a point source, and that they lose energy only by the inverse Compton (IC) process, we calculate gamma-ray spectra and light curves by the Monte Carlo method, including the full electromagnetic cascade process. Moreover, we calculated X-ray spectra and light curves by using the resultant electron distribution. As a result, we are able to reproduce qualitatively spectra and light curves observed by HESS, Fermi, and Suzaku for the inclination angle i = 30 dig and the index of injected electron distribution p = 2.5. We conclude that TeV-GeV anticorrelation is due to anisotropic IC scattering and anisotropic gamma-gamma absorption, and that TeV-X correlation is due to the dependence of IC cooling time on orbital phases. In addition, the constraint on the inclination angle implies that the compact object in LS5039 is a black hole.
description: 27 pages, 7 figures, published in The Astrophysical Journal
Machine Learning and LHC Event Generation
Creators: name: Butter, Anja
name: Plehn, Tilman
name: Schumann, Steffen
name: Badger, Simon
name: Caron, Sascha
name: Cranmer, Kyle
name: Di Bello, Francesco Armando
name: Dreyer, Etienne
name: Forte, Stefano
name: Ganguly, Sanmay
name: Gonçalves, Dorival
name: Gross, Eilam
name: Heimel, Theo
name: Heinrich, Gudrun
name: Heinrich, Lukas
name: Held, Alexander
name: Höche, Stefan
name: Howard, Jessica N.
name: Ilten, Philip
name: Isaacson, Joshua
name: Janßen, Timo
name: Jones, Stephen
name: Kado, Marumi
name: Kagan, Michael
name: Kasieczka, Gregor
name: Kling, Felix
name: Kraml, Sabine
name: Krause, Claudius
name: Krauss, Frank
name: Kröninger, Kevin
name: Barman, Rahool Kumar
name: Luchmann, Michel
name: Magerya, Vitaly
name: Maitre, Daniel
name: Malaescu, Bogdan
name: Maltoni, Fabio
name: Martini, Till
name: Mattelaer, Olivier
name: Nachman, Benjamin
name: Pitz, Sebastian
name: Rojo, Juan
name: Schwartz, Matthew
name: Shih, David
name: Siegert, Frank
name: Stegeman, Roy
name: Stienen, Bob
name: Thaler, Jesse
name: Verheyen, Rob
name: Whiteson, Daniel
name: Winterhalder, Ramon
name: Zupan, Jure
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: First-principle simulations are at the heart of the high-energy physics research program. They link the vast data output of multi-purpose detectors with fundamental theory predictions and interpretation. This review illustrates a wide range of applications of modern machine learning to event generation and simulation-based inference, including conceptional developments driven by the specific requirements of particle physics. New ideas and tools developed at the interface of particle physics and machine learning will improve the speed and precision of forward simulations, handle the complexity of collision data, and enhance inference as an inverse simulation problem.
description: Review article based on a Snowmass 2021 contribution
Roles of epidermal growth factor receptor and its ligands in ovarian cancer
Creators: name: Xin, Qiu
Publisher: name: University of British Columbia
Year: 2015

description: The overexpression of epidermal growth factor receptor (EGFR) has been shown in ovarian cancer and is associated with poor prognosis of this malignant disease. Thus, exploring the EGFR-mediated cell signaling in ovarian cancer may deepen our understanding of this disease. The down-regulation of E-cadherin may promote cell proliferation, motility and invasiveness, leading to the cancer progression. We have previously demonstrated that epidermal growth factor (EGF), amphiregulin (AREG) and transforming growth factor-α (TGF-α), all of which bind exclusively to EGFR, down-regulate E-cadherin expression and induce ovarian cancer cell invasion. In this study, we showed that, as was the case for the effect of EGF, the TGF-α- and AREG-induced down-regulation of E-cadherin expression involved both EGFR and HER2. However, in contrast to the cases of EGF and AREG, the transcription factor Snail was not required for the TGF-α-induced down-regulation of E-cadherin expression. This study showed that TGF-α uses common and divergent molecular mediators to regulate E-cadherin expression and cell invasion. Cyclooxygenase-2 (COX-2) has been shown to participate in cancer metastasis by down-regulating E-cadherin expression, and elevated expression of COX-2 has been reported in ovarian cancer. We have previously demonstrated that COX-2-derived prostaglandin E2 (PGE2) promotes cell invasion in human ovarian cancer. In this study, we showed that EGF/EGFR-induced cell invasion was mediated by the elevation of COX-2 expression and PGE2 production in an E-cadherin-independent manner. Aside from the pro-invasive effect, EGF may strongly promote the cell proliferation. Connexin 43 (Cx43) has been shown to regulate cell proliferation, and this gap junction protein can be regulated by EGF. To date, the functional role of EGF in regulating Cx43 expression in human ovarian cancer has never been investigated. Interestingly, we demonstrated that EGF/EGFR up-regulated Cx43 expression through the activation of Akt1. Functionally, Cx43 may act as a negative regulator of EGF/EGFR-induced cell proliferation in human ovarian cancer, in a gap junction-independent manner. Overall, our studies provide important insights into the molecular mechanisms regulating EGF-stimulated human ovarian cancer cell invasion and proliferation.
Kinetic vs. multi-fluid approach for interstellar neutrals in the heliosphere: exploration of the interstellar magnetic field effects
Creators: name: Alouani-Bibi, Fathallah
name: Opher, Merav
name: Alexashov, Dimitry
name: Izmodenov, Vladislav
name: Toth, Gabor
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a new 3d self-consistent two-component (plasma and neutral hydrogen) model of the solar wind interaction with the local interstellar medium (LISM). This model (K-MHD) combines the MHD treatment of the solar wind and the ionized LISM component, with a kinetic model of neutral interstellar hydrogen (LISH). The local interstellar magnetic field (BLISM) intensity and orientation are chosen based on an early analysis of the heliosheath flows (Opher et al. 2009). The properties of the plasma and neutrals obtained using the (K-MHD) model are compared to previous multi-fluid (Opher et al. 2009) and kinetic models (Izmodenov et al. 2005). The new treatment of LISH revealed important changes in the heliospheric properties not captures by the multi-fluid model. These include a decrease in the heliocentric distance to the termination shock (TS), a thinner heliosheath and a reduced deflection angle (θ) of the heliosheath flows. The asymmetry of the termination shock, however, seems to be unchanged by the kinetic aspect of the LISH.
description: submitted to Astrophysical Journal
Maximum Likelihood Estimation in Gaussian Process Regression is Ill-Posed
Creators: name: Karvonen, Toni
name: Oates, Chris J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistics Theory (math.ST)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Gaussian process regression underpins countless academic and industrial applications of machine learning and statistics, with maximum likelihood estimation routinely used to select appropriate parameters for the covariance kernel. However, it remains an open problem to establish the circumstances in which maximum likelihood estimation is well-posed, that is, when the predictions of the regression model are insensitive to small perturbations of the data. This article identifies scenarios where the maximum likelihood estimator fails to be well-posed, in that the predictive distributions are not Lipschitz in the data with respect to the Hellinger distance. These failure cases occur in the noiseless data setting, for any Gaussian process with a stationary covariance function whose lengthscale parameter is estimated using maximum likelihood. Although the failure of maximum likelihood estimation is part of Gaussian process folklore, these rigorous theoretical results appear to be the first of their kind. The implication of these negative results is that well-posedness may need to be assessed post-hoc, on a case-by-case basis, when maximum likelihood estimation is used to train a Gaussian process model.
description: An important work is missing from our literature review. Ben Salem, Bachoc, Roustant, Gamboa and Tomaso [Gaussian process-based dimension reduction for goal-oriented sequential design. SIAM/ASA Journal on Uncertainty Quantification, 7(4):1369-1397, 2019. See Proposition 4.3.] have proved parts of Theorems 2.3 and 5.3 using a technique that is more or less identical to the proof in Section 7.4
How unusual is XRF 060218 ?
Creators: name: Mandal, Samir
name: Eichler, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Light curves are calculated for an off-axis observer due the scattering of primary radiation by extended baryonic material. The unusually long duration and the chromaticity of the light curves above several KeV of XRF 060218 can be explained as a result of the acceleration of the baryonic scattering material by the primary radiation. The observed light curves by our model and detailed fits to the data are presented. The model predicts that $\sim 4\times 10^{48}$ ergs are put into accelerated, mildly relativistic baryons by the radiation pressure at large radii from the central engine. It is suggested that the emission below 3 KeV, which lies {\it below} the Amati relation, is a baryon contaminated fireball.
description: 7 pages, 5 figures, Appeared in ApJL, Volume 713, Issue 1, pp. L55, 2010