cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Protection of center-spin coherence by dynamically polarizing nuclear spin core in diamond
Creators: name: Liu, Gang-Qin
name: Jiang, Qian-Qing
name: Chang, Yan-Chun
name: Liu, Dong-Qi
name: Li, Wu-Xia
name: Gu, Chang-Zhi
name: Po, Hoi Chun
name: Zhang, Wen-Xian
name: Zhao, Nan
name: Pan, Xin-Yu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We experimentally investigate the protection of electron spin coherence of nitrogen vacancy (NV) center in diamond by dynamical nuclear polarization. The electron spin decoherence of an NV center is caused by the magnetic ield fluctuation of the $^{13}$C nuclear spin bath, which contributes large thermal fluctuation to the center electron spin when it is in equilibrium state at room temperature. To address this issue, we continuously transfer the angular momentum from electron spin to nuclear spins, and pump the nuclear spin bath to a polarized state under Hartman-Hahn condition. The bath polarization effect is verified by the observation of prolongation of the electron spin coherence time ($T_2^*$). Optimal conditions for the dynamical nuclear polarization (DNP) process, including the pumping pulse duration and depolarization effect of laser pulses, are studied. Our experimental results provide strong support for quantum information processing and quantum simulation using polarized nuclear spin bath in solid state systems.
description: 4 pages, 4 figures
Raw data for "Images Retrieval and Classification for Acute Myeloid Leukemia Blood Cell Using Deep Metric Learning"
Creators: name: Naing, Kaung Myat
Publisher: name: figshare
Year: 2023
Subjects: Biomedical imaging

description: Deep metric learning-based image retrieval systems have recently been used in medical applications because they provide clinically relevant information-based similar images based on prior knowledge. Although train examiners and deep learning models successfully analyze leukocyte cells, there are still numerous difficult challenges due to biological variation, time constraints, and a variety of image-related aspects. In this study, we propose a deep metric learning model-based image retrieval and classification system for acute myeloid leukemia blood cells to address these issues and assist physicians. The proposed model utilizes the pre-trained ResNet-34 model as the backbone network, embedding loss with multi similarity miner, and M-Per-Class sampling strategy to learn an embedding function. The five embedding losses were also applied to compare the four performances in order to determine the best loss-based model. Based on the best loss-based model, the class-wise precision and sensitivity using a neighborhood size are also presented. The results show that the contrastive loss-based deep metric learning model achieved the highest precision of 94.90%, sensitivity of 94.85%, specificity of 99.64%, and accuracy of 99.32% in model comparison. Except for a few failures in small classes, the class-wise precision and sensitivity scores looked to be impressive in all classes. Therefore, this proposed system can highly be effective in screening and diagnosing of AML-related white blood cell stages that cause serious cancer.
title: How resilient is public support for carbon pricing? Longitudinal evidence from Germany
Creators: name: Sommer, Stephan
name: Konc, Théo
name: Drews, Stefan
Publisher: name: Hertie School
Year: 2023

description: The success of climate policies depends crucially on the dynamics of public support. Using unique longitudinal data from three surveys conducted between 2019 and 2022, we study the variations of public support for carbon pricing in Germany. The period includes two relevant events: the introduction and ramping up of carbon pricing in Germany and the exogenous increase in energy prices following the Russian invasion of Ukraine. Using panel methods, we show that support is very persistent over time and might have increased slightly more recently. However, people who experience high energy costs display a lower support. Regarding revenue use, we detect that social cushioning has become more popular after the introduction of carbon pricing. Our findings suggest that it is crucial to gather enough support before implementing climate policies.
What Sets Temperature Gradients in Galaxy Clusters? Implications for non-thermal pressure support and mass-observable scaling relations
Creators: name: McCourt, Michael
name: Quataert, Eliot
name: Parrish, Ian J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a spherically symmetric model for the origin and evolution of the temperature profiles in the hot plasma filling galaxy groups and clusters. We find that the gas in clusters is generically not isothermal, and that the temperature declines with radius at large distances from the cluster center (outside the core- and scale radii). This temperature profile is determined by the accretion history of the halo, and is not quantitatively well-described by a polytropic model. We explain quantitatively how the large-scale temperature gradient persists in spite of thermal conduction and convection. These results are a consequence of the cosmological assembly of clusters and cannot be reproduced with non-cosmological simulations of isolated halos. We show that the variation in halo assembly histories produces a ~10% scatter in temperature at fixed mass. On top of this scatter, conduction decreases the temperature of the gas near the scale radius in massive clusters, which may bias hydrostatic mass estimates inferred from x-ray and SZ observations. As an example application of our model profiles, we use mixing-length theory to estimate the turbulent pressure support created by the magnetothermal instability (MTI): in agreement with our earlier MHD simulations, we find that the convection produced by the MTI can provide ~5% non-thermal pressure support near r_500. The magnitude of this turbulent pressure support is likely to be non-monotonic in halo mass, peaking in ~10^14.5 M_sun halos.
description: accepted for publication in MNRAS
Companions to nearby stars with astrometric acceleration. II
Creators: name: Tokovinin, Andrei
name: Hartung, Markus
name: Hayward, Thomas L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hipparcos astrometric binaries were observed with the NICI adaptive optics system at Gemini-S, completing the work of Paper I (Tokovinin et al. 2012). Among the 65 F, G, K dwarfs within 67pc of the Sun studied here, we resolve 18 new sub-arcsecond companions, re-measure 7 known astrometric pairs, and establish the physical nature of yet another three wider companions. The 107 astrometric binaries targeted at Gemini so far have 38 resolved companions with separations under 3". Modeling shows that bright enough companions with separations on the order of an arcsecond can perturb the Hipparcos astrometry when they are not accounted for in the data reduction. However, the resulting bias of parallax and proper motion is generally below formal errors and such companions cannot produce fake acceleration. This work contributes to the multiplicity statistics of nearby dwarfs by bridging the gap between spectroscopic and visual binaries and by providing estimates of periods and mass ratios for many astrometric binaries.
description: Accepted by the Astronomical Journal. 8 pages, 4 figures
Self-assembly of shallow magnetic spots through strongly stratified turbulence
Creators: name: Brandenburg, Axel
name: Kleeorin, Nathan
name: Rogachevskii, Igor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent studies have demonstrated that in fully developed turbulence, the effective magnetic pressure of a large-scale field (non-turbulent plus turbulent contributions) can become negative. In the presence of strongly stratified turbulence, this was shown to lead to a large-scale instability that produces spontaneous magnetic flux concentrations. Furthermore, using a horizontal magnetic field, elongated flux concentrations with a strength of a few per cent of the equipartition value were found. Here we show that a uniform vertical magnetic field leads to circular magnetic spots of equipartition field strengths. This could represent a minimalistic model of sunspot formation and highlights the importance of two critical ingredients: turbulence and strong stratification. Radiation, ionization, and supergranulation may be important for realistic simulations, but are not critical at the level of a minimalistic model of magnetic spot formation.
description: 6 pages, 5 figures, revised version, ApJL (in press)
Isometric actions on pseudo-Riemannian nilmanifolds
Creators: name: del Barco, Viviana
name: Ovando, Gabriela P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C50, 53C30, 22E25, 53B30

description: This work deals with the structure of the isometry group of pseudo-Riemannian 2-step nilmanifolds. We study the action by isometries of several groups and we construct examples showing substantial differences with the Riemannain situation; for instance the action of the nilradical of the isometry group does not need to be transitive. For a nilpotent Lie group endowed with left-invariant pseudo-Riemannian metric we study conditions for which the subgroup of isometries fixing the identity element equals the subgroup of isometric automorphisms. This set equality holds for pseudo-$H$-type groups.
description: 18 pages
title: К ВОПРОСУ О СОВЕРШЕНСТВОВАНИИ ЗАКОНОДАТЕЛЬСТВА ПРИ ПРЕДОСТАВЛЕНИИ ПРАВА ПРОЖИВАНИЯ ОСУЖДЕННОМУ ЗА ПРЕДЕЛАМИ КОЛОНИИ-ПОСЕЛЕНИЯ КАК СПОСОБА СТИМУЛИРОВАНИЯ ПРАВО ПОСЛУШНОГО ПОВЕДЕНИЯ
title: ISSUE OF LAW IMPROVEMENT IN GRANTING RIGHT TO RESIDENCE TO CONVICT OUTSIDE OF COLONY-SETTLEMENT AS WAY OF ENCOURAGING LAW-ABIDING BEHAVIOR
Creators: name: Ковалев, Максим Викторович
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В статье проанализированы возможности стимулирования законопослушного поведения осужденных, отбывающих наказание в колонии-поселении. Автором рассмотрена возможность проживания осужденного за пределами исправительного учреждения как одна из мер,  стимулирующих  социально-активное  поведение.  Выявлены  недостатки  в  содержании нормы о проживании за пределами колонии-поселения, препятствующие эффективному стимулированию  правопослушного  поведения.  Предложены  конкретные  шаги  по  совершенствованию законодательства в сфере проживания за пределами колонии-поселения.
description: The article analyzes the possibilities of stimulating law-abiding behavior of convicts serving sentences  in  the  colony-settlement.  The  author  considers  the  possibility  of  the  convict's  residence outside the colony as one of the measures stimulating socially active behavior. The shortcomings in the content of the norm on living outside the colony-settlement, preventing the effective stimulation of law-abiding behavior are revealed. Specific measures are proposed to improve the legislation in the sphere of living outside the colony-settlement
Mixtures of anisotropic and spherical colloids: Phase behavior, confinement, percolation phenomena and kinetics
Creators: name: Schilling, T.
name: Dorosz, S.
name: Radu, M.
name: Mathew, M.
name: Jungblut, S.
name: Binder, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Purely entropic systems such as suspensions of hard rods, platelets and spheres show rich phase behavior. Rods and platelets have successfully been used as models to predict the equilibrium properties of liquid crystals for several decades. Over the past years hard particle models have also been studied in the context of non-equilibrium statistical mechanics, in particular regarding the glass transition, jamming, sedimentation and crystallization. Recently suspensions of hard anisotropic particles also moved into the focus of materials scientists who work on conducting soft matter composites. An insulating polymer resin that is mixed with conductive filler particles becomes conductive when the filler percolates. In this context the mathematical topic of connectivity percolation finds an application in modern nano-technology. In this article, we briefly review recent work on the phase behavior, confinement effects, percolation transition and phase transition kinetics in hard particle models. In the first part, we discuss the effects that particle anisotropy and depletion have on the percolation transition. In the second part, we present results on the kinetics of the liquid-to-crystal transition in suspensions of spheres and of ellipsoids.
title: ИСПОЛЬЗОВАНИЕ МОРСКОГО ТРАНСПОРТА И ИНФРАСТРУКТУРЫ МЕЖДУНАРОДНЫХ ПОРТОВ В НАРКОТРАФИКЕ
title: THE USE OF MARITIME TRANSPORT AND INFRASTRUCTURE OF INTERNATIONAL PORTS IN DRUG TRAFFICKING
Creators: name: Михайлова, Лариса  Васильевна
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В данной статье рассмотрены морские бассейны как маршруты, используемые наркогруппировками для перевозки наркотических средств, а также различные способы перемещения таких средств и психоактивных веществ морскими судами.
description: The  article  discusses  sea  basins  as  routes  used  by  drug  dealers  for  the  transport  of  narcotic drugs, as well as various methods of their movement by sea vessels.
title: ВОПРОСЫ ОТВЕТСТВЕННОСТИ ЗА ТОРГОВЛЮ ЛЮДЬМИ В ЦЕЛЯХ ИЗЪЯТИЯ У ПОТЕРПЕВШЕГО ОРГАНОВ ИТКАНЕЙ
title: ISSUES OF CRIMINAL LIABILITY FOR HUMAN TRAFFICKING FOR PURPOSE OF VICTIM’S ORGANS AND TISSUES REMOVAL
Creators: name: Силаев, Семён  Александрович
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В статье рассмотрено содержание цели использования органов и тканей потерпевшего как квалифицирующего признака торговли людьми. Отмечена спорность действующей редакции статьи 127.1 Уголовного кодекса Российской Федерации с точки зрения принципов уголовного права и уголовной политики,предложены пути ее дальнейшего совершенствования.
description: The paper is devoted toan analysis of the purpose of the victim’s organs and tissues removal as an aggravating factor of trafficking in human beings. Disputability of the current wording of Ar-ticle 127.1 of the Criminal Code of the Russian Federation in terms of the fundamental principles of criminal law and criminal policy is noted. Possible ways of its further improvement are proposed.
Signature Change by GUP
Creators: name: Ghaneh, T.
name: Darabi, F.
name: Motavalli, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the issue of continuous signature transition from Euclidean to Lorentzian metrics in a cosmological model described by FRW metric minimally coupled with a self interacting massive scalar field. Then, using a noncommutative phase space of dynamical variables deformed by Generalized Uncertainty Principle (GUP) we show that the signature transition occurs even for a model described by FRW metric minimally coupled with a free massless scalar field accompanied by a cosmological constant. This indicates that the continuous signature transition might have been easily occurred at early universe just by a free massless scalar field, a cosmological constant and a noncommutative phase space deformed by GUP, without resorting to a massive scalar field having an {\it ad hoc} complicate potential. We also study the quantum cosmology of the model and obtain a solution of Wheeler-DeWitt equation which shows a good correspondence with the classical path.
description: 14 pages, to be published in IJMPD
Object Oriented Model for Evaluation of On-Chip Networks
Creators: name: Anjum, Sheraz
name: Munir, Ehsan Ullah
name: Anwar, Waqas
name: Javaid, Nadeem
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: The Network on Chip (NoC) paradigm is rapidly replacing bus based System on Chip (SoC) designs due to their inherent disadvantages such as non-scalability, saturation and congestion. Currently very few tools are available for the simulation and evaluation of on-chip architectures. This study proposes a generic object oriented model for performance evaluation of on-chip interconnect architectures and algorithms. The generic nature of the proposed model can help the researchers in evaluation of any kind of on-chip switching networks. The model was applied on 2D-Mesh and 2D-Diagonal-Mesh on-chip switching networks for verification and selection of best out of both the analyzed architectures. The results show the superiority of 2D-Diagonal-Mesh over 2D-Mesh in terms of average packet delay.
title: International Attitudes Toward Global Policies
Creators: name: Fabre, Adrien
name: Douenne, Thomas
name: Mattauch, Linus
Publisher: name: Hertie School
Year: 2023

description: We document majority support for policies entailing global redistribution and climate mitigation. Recent surveys on 40,680 respondents in 20 countries covering 72% of global carbon emissions show strong support for an effective and progressive way to combat climate change and poverty: a global carbon price funding a global basic income, called the “Global Climate Scheme” (GCS). Using complementary surveys on 8,000 respondents in the U.S., France, Germany, Spain, and the UK, we test several hypotheses that could reconcile strong stated support with a lack of salience in policy circles. A list experiment shows no evidence of social desirability bias, majorities are willing to sign a real-stake petition, and global redistribution ranks high in the prioritization of policies. Conjoint analyses reveal that a platform is more likely to be preferred if it contains the GCS or a global tax on millionaires. Universalistic attitudes are confirmed by an incentivized donation. In sum, our findings indicate that global policies are genuinely supported by a majority of the population. Public opinion is therefore not the reason that they do not prominently enter political debates.
Anomalous scaling of a passive vector field in $d$ dimensions: Higher-order structure functions
Creators: name: Adzhemyan, L. Ts.
name: Antonov, N. V.
name: Gol'din, P. B.
name: Kompaniets, M. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 76F30

description: The problem of anomalous scaling in the model of a transverse vector field $θ_{i}(t,x)$ passively advected by the non-Gaussian, correlated in time turbulent velocity field governed by the Navier--Stokes equation, is studied by means of the field-theoretic renormalization group and operator product expansion. The anomalous exponents of the $2n$-th order structure function $S_{2n}(r) = $, where $θ$ is the component of the vector field parallel to the separation $r$, are determined by the critical dimensions of the family of composite fields (operators) of the form $(\partialθ\partialθ)^{2n}$, which mix heavily in renormalization. The daunting task of the calculation of the matrices of their critical dimensions (whose eigenvalues determine the anomalous exponents) simplifies drastically in the limit of high spatial dimension, $d\to\infty$. This allowed us to find the leading and correction anomalous exponents for the structure functions up to the order $S_{56}$. They reveal intriguing regularities, which suggest for the anomalous exponents simple "empiric" formulae that become practically exact for $n$ large enough. Along with the explicit results for modest $n$, they provide the full description of the anomalous scaling in the model. Key words: passive vector field, turbulent advection, anomalous scaling, renormalization group, operator product expansion.
description: 20 pages, LaTeX source with one EPS figure. Published version; minor revisions
Psychosocial safety climate & the reciprocal relationships between job demands, job resources and burnout.
Creators: name: Pohlner, Mona
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: The research project is part of a master's thesis project that is being carried out by three Master's students under the supervision of Prof. Dr. Haun at the University of Wuerzburg. It examines the reciprocal relationship between work and well-being.
Demonstration and resolution of the Gibbs paradox of the first kind
Creators: name: Peters, Hjalmar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Gibbs paradox of the first kind (GP1) refers to the false increase in entropy which, in statistical mechanics, is calculated from the process of combining two gas systems S1 and S2 consisting of distinguishable particles. Presented in a somewhat modified form, the GP1 manifests as a contradiction to the second law of thermodynamics. Contrary to popular belief, this contradiction affects not only classical but also quantum statistical mechanics. The present paper resolves the GP1 by considering two effects: 1. The uncertainty about which particles are located in S1 and which in S2 contributes to the entropies of S1 and S2. 2. S1 and S2 are correlated by the fact that if a certain particle is located in one system, it cannot be located in the other. As a consequence, the entropy of the total system consisting of S1 and S2 is not the sum of the entropies of S1 and S2.
description: added section 4 which resolves the GP1 in its original classical form
title: The use of assistive technology in the school-based instruction for children with specific learning disorders: the case of Cameroon and Canada
Creators: name: Yonge, Blessed Mbu Molua
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: Children with specific learning disorders (SLD) face numerous challenges in their education. Various forms of support and accommodations are needed to help them. One of such support is the use of assistive technology (AT). AT helps them to carry out certain tasks which they could not do before. It is against this background that this study was aimed at critically exploring and comparing the use of AT in the school-based instruction of children with SLD in Cameroon and Canada. The qualitative comparative case study design was used for the study. The two geopolitical locales were selected using critical case purposive sampling. Twenty-four documents were selected and analyzed with ten emergent themes using document analysis leading to a comparison of both countries in terms of the use of AT. The results of the study show that AT is available for use in both countries with unmet needs and that there exist laws, policies, and legislations in both countries to control access and provision of AT. However, some differences were found in terms of the availability of assistive devices programs and funding sources amongst others. Recommendations were given such as increase of funding in provision of AT and constantly revising and improving the implementation of the existing laws, policies, and legislations for AT access and provision. Implications for practice and further research were also proposed.
Energy-Efficient Power Allocation in OFDM Systems with Wireless Information and Power Transfer
Creators: name: Ng, Derrick Wing Kwan
name: Lo, Ernest S.
name: Schober, Robert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers an orthogonal frequency division multiplexing (OFDM) downlink point-to-point system with simultaneous wireless information and power transfer. It is assumed that the receiver is able to harvest energy from noise, interference, and the desired signals. We study the design of power allocation algorithms maximizing the energy efficiency of data transmission (bit/Joule delivered to the receiver). In particular, the algorithm design is formulated as a high-dimensional non-convex optimization problem which takes into account the circuit power consumption, the minimum required data rate, and a constraint on the minimum power delivered to the receiver. Subsequently, by exploiting the properties of nonlinear fractional programming, the considered non-convex optimization problem, whose objective function is in fractional form, is transformed into an equivalent optimization problem having an objective function in subtractive form, which enables the derivation of an efficient iterative power allocation algorithm. In each iteration, the optimal power allocation solution is derived based on dual decomposition and a one-dimensional search. Simulation results illustrate that the proposed iterative power allocation algorithm converges to the optimal solution, and unveil the trade-off between energy efficiency, system capacity, and wireless power transfer: (1) In the low transmit power regime, maximizing the system capacity may maximize the energy efficiency. (2) Wireless power transfer can enhance the energy efficiency, especially in the interference limited regime.
description: 6 pages, Accepted for presentation at the IEEE International Conference on Communications (ICC) 2013
Comment on "Quantized Orbital Angular Momentum Transfer and Magnetic Dichroism in the Interaction of Electron Vortices with Matter"
Creators: name: Schattschneider, Peter
name: Löffler, Stefan
name: Verbeeck, Johan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It was claimed (Lloyd et al., PRL 108 (2012) 074802) that energy loss magnetic chiral dichroism (EMCD) with electron vortex beams is feasible, and has even advantages over the standard setup with Bragg diffracted waves. In this Comment, we show that Lloyd et al. ignored an important constraint on the proposed selection rule for the transfer of angular momentum in the interaction, namely that it is only valid for an atom located in the very center of the vortex. As an experimental consequence, the EMCD signal will only be strong for extremely small nanoparticles of 1 to 2 nm diameter.
description: Submitted to Physical Review Letters 11 July 2012. Accepted for publication 3 April 2013. "Copyright (2013) by the American Physical Society." http://prl.aps.org/
Camponotus maculatus subsp. boivini Forel 1891
Creators: name: Forel, A.
Publisher: name: L'Imprimerie Nationale
Year: 1891
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Camponotus
Camponotus maculatus
Camponotus maculatus, race boivini

description: Camponotus maculatus, race boivini, Forel (p. 34).
linerina, [[queen]], [[worker]] et [[male]]. Le [[male]] est fort petit, long de 5 mill.,d'un noir brunatre avec les scapes d'un roux testacé, le pédicule, les pattes et les mandibules brunâtres, les ailes très faiblement teintées de jaunâtre, avec les nervures et la tache marginale pâles. Des poils obliques sur les tibias et les scapes. Joues poilues.
Les matériaux assez nombreux, que nous avons reçus peu à peu montrent que la variété hovoides que j'avais rattachée à la race Radamae se rapproche tout autant de la race Boivini, car sa couleur mêlée est presque plus constante que sa pilosité. Les petits hovoides se rapprochent surtout du Boivini, tandis que les grandes variétés sont voisines du hova.
description: Published as part of Forel, A., 1891, Histoire naturelle des Hymenopteres. Deuxieme partie: Les Formicides., pp. 1-231 in Histoire Physique, Naturelle et Politique de Madagascar., Paris :L'Imprimerie Nationale on pages 213-214, DOI: 10.5281/zenodo.9896
Wess-Zumino Inflation in Light of Planck
Creators: name: Croon, Djuna
name: Ellis, John
name: Mavromatos, Nick E.
Publisher: name: arXiv
Year: 2013
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 discuss cosmological inflation in the minimal Wess-Zumino model with a single massive chiral supermultiplet. With suitable parameters and assuming a plausible initial condition at the start of the inflationary epoch, the model can yield scalar perturbations in the Cosmic Microwave Background (CMB) of the correct strength with a spectral index n_s ~ 0.96 and a tensor-to-scalar perturbation ratio r < 0.1, consistent with the Planck CMB data. We also discuss the possibility of topological inflation within the Wess-Zumino model, and the possibility of combining it with a seesaw model for neutrino masses. This would violate R-parity, but at such a low rate that the lightest supersymmetric particle would have a lifetime long enough to constitute the astrophysical cold dark matter.
description: 11 pages, 3 figures
Coupling motion of colloidal particles in quasi-two-dimensional confinement
Creators: name: Ma, Jun
name: Jing, Guangyin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Brownian motion of colloidal particles in the quasi-two-dimensional (qTD) confinement displays distinct kinetic characters from that in bulk. Here we experimentally report a dynamic evolution of Brownian particles in the qTD system. The dynamic system displays a quasi-equilibrium state of colloidal particles performing Brownian motion. In the quasi-equilibrium process, the qTD confinement results in the coupling of particle motions, which slowly dampens the motion and interaction of particles until the final equilibrium state reaches. The theory is developed to explain coupling motions of Brownian particles in the qTD confinement.
description: 7 pages, 4 figures
Two critical phenomena in the exactly soluble quantized Schwarzschild black hole
Creators: name: Son, Edwin J.
name: Kim, Wontae
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study thermodynamic quantities and phase transitions of a spherically symmetric Schwarzschild black hole by taking into account the back reaction through the conformal anomaly of matter fields, and show that there exists an additional phase transition to the conventional Hawking-Page phase transition. The small black hole is more probable than the hot flat space above a second critical temperature, while it is less probable than the hot flat space in the classical Schwarzschild black hole. However, the unstable small black hole eventually should decay into the stable large black hole because the conformal anomaly does not change its thermodynamic stability.
description: v2. improved version published in JHEP; 11 pages, 3 figures, clarifications and references added
Storage Ring Cross Section Measurements for Electron Impact Single and Double Ionization of Fe^13+ and Single Ionization of Fe^16+ and Fe^17+
Creators: name: Hahn, M.
name: Becker, A.
name: Bernhardt, D.
name: Grieser, M.
name: Krantz, C.
name: Lestinsky, M.
name: Müller, A.
name: Novotný, O.
name: Repnow, R.
name: Schippers, S.
name: Spruck, K.
name: Wolf, A.
name: Savin, D. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report measurements of electron impact ionization (EII) for Fe^13+, Fe^16+, and Fe^17+ over collision energies from below threshold to above 3000 eV. The ions were recirculated using an ion storage ring. Data were collected after a sufficiently long time that essentially all the ions had relaxed radiatively to their ground state before data were collected. For single ionization of $\fethirteen$ we find that previous single pass experiments are more than 40% larger than our results. Compared to our work, the theoretical cross section recommended by Arnaud & Raymond (1992) is more than 30% larger, while that of Dere (2007) is about 20% greater. Much of the discrepancy with Dere (2007) is due to the theory overestimating the contribution of excitation-autoionization via n=2 excitations. Double ionization of Fe^13+ is dominated by direct ionization of an inner shell electron accompanied by autoionization of a second electron. Our results for single ionization of Fe^16+ and Fe^17+ agree with theoretical calculations to within the experimental uncertainties.
description: Accepted for the Astrophysical Journal
Energy landscapes, structural topologies and rearrangement mechanisms in clusters of dipolar particles
Creators: name: Farrell, James D.
name: Lines, Christabel
name: Shepherd, James J.
name: Chakrabarti, Dwaipayan
name: Miller, Mark A.
name: Wales, David J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Clusters of spherical particles with isotropic attraction favour compact structures that maximise the number of energetically optimal nearest-neighbour interactions. In contrast, dipolar interactions lead to the formation of chains with a low coordination number. When both isotropic and dipolar interactions are present, the competition between them can lead to intricate knot, link and coil structures. Here, we investigate how these structures may self-organise and interconvert in clusters bound by the Stockmayer potential (Lennard-Jones plus point dipole). We map out the low-lying region of the energy landscape using disconnectivity graphs to follow how it evolves as the strength of the dipolar interactions increases. From comprehensive surveys of isomerisation pathways, we identify a number of rearrangement mechanisms that allow the topology of chain-like structures to interconvert.
description: 11 pages, 9 figures
The Complexity of the Proper Orientation Number
Creators: name: Ahadi, Arash
name: Dehghan, Ali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Graph orientation is a well-studied area of graph theory. A proper orientation of a graph $G = (V,E)$ is an orientation $D$ of $E(G)$ such that for every two adjacent vertices $ v $ and $ u $, $ d^{-}_{D}(v) \neq d^{-}_{D}(u)$ where $d_{D}^{-}(v)$ is the number of edges with head $v$ in $D$. The proper orientation number of $G$ is defined as $ \overrightarrowχ (G) =\displaystyle \min_{D\in Γ} \displaystyle\max_{v\in V(G)} d^{-}_{D}(v) $ where $Γ$ is the set of proper orientations of $G$. We have $ χ(G)-1 \leq \overrightarrowχ (G)\leq Δ(G) $. We show that, it is $ \mathbf{NP} $-complete to decide whether $\overrightarrowχ(G)=2$, for a given planar graph $G$. Also, we prove that there is a polynomial time algorithm for determining the proper orientation number of 3-regular graphs. In sharp contrast, we will prove that this problem is $ \mathbf{NP} $-hard for 4-regular graphs.
description: 10 pages, 2 figures. Submitted to Information Processing Letters
title: Variational models of coupled gradient thermoelasticity and thermal conductivity
Creators: name: Lurie, S.A.
name: Belov, P.A.
name: Volkov-Bogorodskii,  D.B.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2019

description: We consider generalized variational non-local models of media with fields of
defects and show that the methods of continuum mechanics are very effective in modeling
connected reversible and irreversible thermomechanical processes. It is postulated that the
tensor of free distortions is determined only by the spherical tensor, which is interpreted as a
dilatation associated with a change in temperature. A variational model of coupled
thermoelasticity and hyperbolic thermal conductivity is under construction. It describes the
general case of non-locality, when gradient properties are determined by scale parameters that
are responsible for both mechanical and temperature effects. The analysis of boundary value
problems is given, the physical interpretation of all model parameters is given through known
thermomechanical parameters. We also offer a variation model of irreversible thermodynamic
processes, which is based on the principle of L.I. Sedov. In this case, the variation form for
the dissipative part of the change in energy is based on the non-integrability condition
proposed by the authors.
Extremal Problems in Bergman Spaces and an Extension of Ryabykh's Theorem
Creators: name: Ferguson, Timothy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30H10, 30H20, 46B10, 46E15

description: We study linear extremal problems in the Bergman space $A^p$ of the unit disc for $p$ an even integer. Given a functional on the dual space of $A^p$ with representing kernel $k \in A^q$, where $1/p + 1/q = 1$, we show that if the Taylor coefficients of $k$ are sufficiently small, then the extremal function $F \in H^{\infty}$. We also show that if $q \le q_1 < \infty$, then $F \in H^{(p-1)q_1}$ if and only if $k \in H^{q_1}$. These results extend and provide a partial converse to a theorem of Ryabykh.
description: 16 pages. To appear in the Illinois Journal of Mathematics
title: On a configurational force driving surface growth of solids
Creators: name: Freidin, A.B.
name: Izmaylova, Y.O.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2019

description:  Surface growth of solids includes a wide variety of processes starting from additive
manufacturing technologies and ending with plenty of biological problems. Model of surface
growth based on the expression of the configurational force, derived from fundamental laws
and entropy inequality, is offered in the present paper. A new expression for the
configurational force called surface growth force, which controls growth and resorption, is
used. Analysis of the applicability of the developed model was carried out for problems of
surface growth of compressed cylinder with prestrained growth layer and growth layer
without prestrain. The influence of matter supply function and mechanical stresses as one of
the main process controlling factors on the surface growth was also investigated.
Anomalous scaling in statistical models of passively advected vector fields
Creators: name: Antonov, N. V.
name: Gulitskiy, N. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 76F30

description: The field theoretic renormalization group and the operator product expansion are applied to the stochastic model of passively advected vector field with the most general form of the nonlinear term allowed by the Galilean symmetry. The advecting turbulent velocity field is governed by the stochastic Navier--Stokes equation. It is shown that the correlation functions of the passive vector field in the inertial range exhibit anomalous scaling behaviour. The corresponding anomalous exponents are determined by the critical dimensions of tensor composite fields (operators) built solely of the passive vector field. They are calculated (including the anisotropic sectors) in the leading order of the expansion in $y$, the exponent entering the correlator of the stirring force in the Navier--Stokes equation (one-loop approximation of the renormalization group). The anomalous exponents exhibit an hierarchy related to the degree of anisotropy: the less is the rank of the tensor operator, the less is its dimension. Thus the leading terms, determined by scalar operators, are the same as in the isotropic case, in agreement with the Kolmogorov's hypothesis of the local isotropy restoration.
description: 12 pages, LaTeX source. Version accepted for publication in Theor. Math. Phys.: minor revisions. arXiv admin note: text overlap with arXiv:1212.3941, arXiv:1202.5992
title: Numerically-analytically studying fundamental solutions of 3-D dynamics of partially saturated poroelastic bodies
Creators: name: Igumnov, Leonid A.
name: Petrov, Andrey N.
name: Belov, Aleksander A.
name: Mironov, Anatoly A.
name: Lyubimov, Aleksander K.
name: Dianov, Denis Yu.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2019

description: A mathematical model of a porous material is considered, in which an elastic
skeleton and two fluid phases filling the pores are discerned. The dynamic equations are
written in Laplace-type representation for unknown displacement functions of the skeleton
and pore pressures of the fillers. The fundamental solutions of the defining differential
equations are numerically-analytically studied. A solution in the time-domain is constructed,
using the time-step method of numerically inverting Laplace transform.
title: An advanced graph-based placement representation for analog layout design
Creators: name: He, Lian
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: Due to complexity and susceptibility of analog layouts towards circuit performance, maturity state of analog integrated circuit (IC) physical design automation has largely lagged behind that of the digital counterpart. Placement is an indispensable stage in the analog IC layout design. It demands effective representations to handle nontrivial analog placement topologies especially in the advanced nanometer technologies. In this thesis, we mainly review the existing placement representations and deepen the research of topological representations for the analog placement design. By leveraging the equivalence between sequence pair (SP) and transitive closure graph (TCG), we propose an SP-driven TCG representation and its associated operations to facilitate the handling of analog placement constraints. To achieve the symmetry-aware placement, we introduce a set of special symmetric-feasible conditions and define an efficient construction mechanism for symmetric placement with the SP-driven TCG representation. A set of SP-driven perturbation operations is also brought forth in this thesis to reduce the algorithmic complexity while satisfying symmetry constraints. Furthermore, a redundancy control scheme among the representation states is developed in order to generate high-performance analog placement with high computation efficiency. Based on the SP-driven TCG representation, we further introduce an Advanced Transitive-Closure-Graph-based placement representation (ATCG). It can effectively and efficiently tackle advanced geometric constraints, which are highly essential for addressing layout dependent effects, thermal effects, and diverse parasitic challenges in the advanced nanometer technologies. ATCG not only inherits all the advantage from both SP and TCG, but also resolve the ambiguous diagonal relationship between any two specified modules. The versatility and flexibility of ATCG can ensure it to accurately control spacing and merging constraints uniquely required by analog layout design. We have implemented our proposed placement methods and tested them with several circuits. Our experimental results demonstrate high efficacy of these proposed representations and the developed operations.
2024 NSF Research Master File
Creators: name: Garrison, Ervan
name: Jones, Emily
name: Williams, Kelsey
Publisher: name: Zenodo
Year: 2024
Subjects: Archaeology
Marine geology
Atlantic Ocean
scour nuclei
geoarchaeology

description: SP MS70 drive - Master file of all years 2021-2024 activities linked to publication, "Scouring for Prehistory" - An Opportunistic Methodology for Sea Floor Archaeology, Atlantic continental shelf, Georgia USA. https://doi.org/10.3390/heritage7070161

Linked to Datasets: DOI: 10.5061/dryad.c2fqz61hw  DOI: 10.5061/dryad.zkh1893jk  DOI: 10.5061/dryad.j6q573np8

Linked to Articles: https://doi.org/10.3390/heritage7070161 - "Scouring for Prehistory", https://doi.org/10.1016/j.quascirev.2024.108725 - "Moats & Comets"
description: Funding provided by: National Science FoundationROR ID: https://ror.org/021nxhr62Award Number: RNSFX0001232301
description: geophysics, GIS, ROV, sediment grabs and cores, diving, PSA, pollen analysis, DNA, UV/blue light, loss on ignition, XRD, SEM-EDS, photogrammetry
Backgrounds in H->WW*->lvlv with ATLAS
Creators: name: Lazovich, Tomo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present techniques used to estimate the backgrounds in the search for the Standard Model Higgs boson in the H->WW*->lvlv decay channel with the ATLAS experiment at the LHC. The dataset corresponds to 13 fb-1 of integrated luminosity taken at a center of mass energy of 8 TeV. Only the final states with an electron, muon, and zero or one jet are presented here.
description: To be included in proceedings of Hadron Collider Physics Symposium 2012 (HCP 2012) (3 pages, 5 figures)
Strongly Coupled Plasmas via Rydberg-Blockade of Cold Atoms
Creators: name: Bannasch, G.
name: Killian, T. C.
name: Pohl, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We propose and analyze a new scheme to produce ultracold neutral plasmas deep in the strongly coupled regime. The method exploits the interaction blockade between cold atoms excited to high-lying Rydberg states and therefore does not require substantial extensions of current ultracold plasma experiments. Extensive simulations reveal a universal behavior of the resulting Coulomb coupling parameter, providing a direct connection between the physics of strongly correlated Rydberg gases and ultracold plasmas. The approach is shown to reduce currently accessible temperatures by more than an order of magnitude, which opens up a new regime for ultracold plasma research and cold ion-beam applications with readily available experimental techniques.
description: 5 pages, 5 figures
title: Roles, Characteristics, and Analysis of Intrinsically Disordered Proteins: A Minireview
Creators: name: Lermyte, Frederik
Publisher: name: MDPI
Year: 2021

description: In recent years, there has been a growing understanding that a significant fraction of the eukaryotic proteome is intrinsically disordered, and that these conformationally dynamic proteins play a myriad of vital biological roles in both normal and pathological states. In this review, selected examples of intrinsically disordered proteins are highlighted, with particular attention for a few which are relevant in neurological disorders and in viral infection. Next, the underlying causes for intrinsic disorder are discussed, along with computational methods used to predict whether a given amino acid sequence is likely to adopt a folded or unfolded state in solution. Finally, biophysical methods for the analysis of intrinsically disordered proteins will be discussed, as well as the unique challenges they pose in this context due to their highly dynamic nature.