cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Category Theory of Symbolic Dynamics
Creators: name: Salo, Ville
name: Törmä, Ilkka
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: We study the central objects of symbolic dynamics, that is, subshifts and block maps, from the perspective of basic category theory, and present several natural categories with subshifts as objects and block maps as morphisms. Our main goals are to find universal objects in these symbolic categories, to classify their block maps based on their category theoretic properties, and to establish as many natural properties (finite completeness, regularity etc.) as possible. Existing definitions in category theory suggest interesting new problems for block maps. Our main technical contributions are the solution to the dual problem of the Extension Lemma and results on certain types of conserved quantities, suggested by the concept of a coequalizer.
description: 36 pages, 1 table. Published in Theoretical Computer Science
Additional file 5 of Conditional knockout of Tsc1 in RORγt-expressing cells induces brain damage and early death in mice
Creators: name: Deng, Yafei
name: Yang, Qinglan
name: Yang, Yao
name: Li, Yana
name: Peng, Hongyan
name: Wu, Shuting
name: Zhang, Shuju
name: Yao, Baige
name: Li, Shuhui
name: Gao, Yuan
name: Li, Xiaohui
name: Li, Liping
name: Deng, Youcai
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Mental Health
subject: Hematology

description: Additional file 5: Supplemental Table 3. KEGG analysis of different signal pathway between RORγt-positive cells and RORγt-negative cells.
title: 01_2415
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Recognizing Members of the Tournament Equilibrium Set is NP-hard
Creators: name: Brandt, Felix
name: Fischer, Felix
name: Harrenstein, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Complexity (cs.CC)
subject: Computer Science and Game Theory (cs.GT)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: A recurring theme in the mathematical social sciences is how to select the "most desirable" elements given a binary dominance relation on a set of alternatives. Schwartz's tournament equilibrium set (TEQ) ranks among the most intriguing, but also among the most enigmatic, tournament solutions that have been proposed so far in this context. Due to its unwieldy recursive definition, little is known about TEQ. In particular, its monotonicity remains an open problem up to date. Yet, if TEQ were to satisfy monotonicity, it would be a very attractive tournament solution concept refining both the Banks set and Dutta's minimal covering set. We show that the problem of deciding whether a given alternative is contained in TEQ is NP-hard.
description: 9 pages, 3 figures
Lecture notes on interacting quantum fields in de Sitter space
Creators: name: Akhmedov, E. T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss peculiarities of quantum fields in de Sitter space on the example of the self-interacting massive real scalar, minimally coupled to the gravity background. Non-conformal quantum field theories in de Sitter space show very special infrared behavior, which is not shared by quantum fields neither in flat nor in anti-de-Sitter space: in de Sitter space loops are not suppressed in comparison with tree level contributions because there are strong infrared corrections. That is true even for massive fields. Our main concern is the interrelation between these infrared effects, the invariance of the quantum field theory under the de Sitter isometry and the (in)stability of de Sitter invariant states (and of dS space itself) under nonsymmetric perturbations.
description: 60 pages, 8 figures, Misprints are further corrected
Fast-Paced Trading of Multi-Attribute Goods
Creators: name: Fink, Eugene
name: Johnson, Josh
name: Hershberger, John
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We present an exchange system for trading complex nonstandard goods, such as used cars. We explain the representation of desirable purchases and sales, describe data structures for fast identification of matches between buyers and sellers, and give experiments on the system's performance.
Spectral Study of the Galactic Ridge X-ray Emission with Suzaku
Creators: name: Ebisawa, Ken
name: Yamauchi, Shigeo
name: Tanaka, Yasuo
name: Koyama, Katsuji
name: Ezoe, Yuichiro
name: Bamba, Aya
name: Kokubun, Motohide
name: Hyodo, Yoshiaki
name: Tsujimoto, Masahiro
name: Takahashi, Hiromitsu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed a typical Galactic plane field at (l,b) = (28.46d, -0.20d) with Suzaku for 100 ksec to carry out a precise spectral study of the Galactic Ridge X-ray Emission (GRXE). The field is known to be devoid of X-ray point sources brighter than ~2 x 10^{-13} ergs s^{-1} cm^{-2} (2--10 keV), and already deeply observed with Chandra. Thanks to the low and stable background and high spectral resolution of Suzaku, we were able to resolve, for the first time, three narrow iron K-emission lines from low-ionized (6.41 keV), helium-like (6.67 keV), and hydrogenic ions (7.00 keV) in the GRXE spectrum. These line features constrain the GRXE emission mechanisms: The cosmic-ray ion charge exchange model or the non-equilibrium ionization plasma model are unlikely, since they require either broad emission lines or lines at intermediate ionization states. Collisional ionization equilibrium plasma is the likely origin for the 6.67 keV and 7.00 keV lines, while origin of the 6.41 keV line, which is due to fluorescence from cold material, is not elucidated. Low non-X-ray background and little stray-light contamination of Suzaku allowed us to precisely measure the absolute X-ray surface brightness in the direction of the Galactic plane. Excluding the point sources brighter than ~2 x 10^{-13} ergs s^{-1} cm^{-2} (2--10 keV), the total surface brightness on the Galactic plane is ~6.1 x 10^{-11} ergs s^{-1} cm^{-2} deg^{-2} (2--10 keV), including the contribution of the cosmic X-ray background that is estimated to be ~1.3x 10^{-11} ergs s^{-1} cm^{-2} deg^{-2}.
description: Accepted to PASJ second Suzaku Special issue
Renormalization Group Theory for the Imbalanced Fermi Gas
Creators: name: Gubbels, K. B.
name: Stoof, H. T. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We formulate a wilsonian renormalization group theory for the imbalanced Fermi gas. The theory is able to recover quantitatively well-established results in both the weak-coupling and the strong-coupling (unitarity) limit. We determine for the latter case the line of second-order phase transitions of the imbalanced Fermi gas and in particular the location of the tricritical point. We obtain good agreement with the recent experiments of Y. Shin {\it et al}. [Nature {\bf 451}, 689 (2008)].
description: Replaced with published version
Non-Perturbative Renormalisation and Running of BSM Four-Quark Operators in $N_f = 2$ QCD
Creators: name: Dimopoulos, Petros
name: Herdoíza, Gregorio
name: Papinutto, Mauro
name: Pena, Carlos
name: Preti, David
name: Vladikas, Anastassios
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform a non-perturbative study of the scale-dependent renormalisation factors of a complete set of dimension-six four-fermion operators. The renormalisation-group (RG) running is determined in the continuum limit for a specific Schrdinger Functional (SF) renormalisation scheme in the framework of lattice QCD with two dynamical flavours ( $N_f = 2$ ). The theory is regularised on a lattice with a plaquette Wilson action and $\mathcal{O}(a)$-improved Wilson fermions. For one of these operators, the computation had been performed in ref. [1]; the present work completes the study for the rest of the operator basis, on the same simulations (configuration ensembles). The related weak matrix elements arise in several operator product expansions; in $ΔF = 2$ transitions they contain the QCD long-distance effects, including contributions from beyond-Standard Model (BSM) processes. Some of these operators mix under renormalisation and their RG-running is governed by anomalous dimension matrices. In ref. [2] the RG formalism for the operator basis has been worked out in full generality and the anomalous dimension matrix has been calculated in NLO perturbation theory. Here the discussion is extended to the matrix step-scaling functions (matrix-SSFs), which are used in finite-size recursive techniques. We rely on these matrix-SSFs to obtain non-perturbative estimates of the operator anomalous dimensions for scales ranging from $\mathcal{O}(Λ_{\rm QCD})$ to $\mathcal{O}(M_W)$.
description: 45 pages, 17 figures
Removing the Impact of Correlated PSF Uncertainties in Weak Lensing
Creators: name: Lu, Tianhuan
name: Zhang, Jun
name: Dong, Fuyu
name: Li, Yingke
name: Liu, Dezi
name: Fu, Liping
name: Li, Guoliang
name: Fan, Zuhui
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Accurate reconstruction of the spatial distributions of the Point Spread Function (PSF) is crucial for high precision cosmic shear measurements. Nevertheless, current methods are not good at recovering the PSF fluctuations of high spatial frequencies. In general, the residual PSF fluctuations are spatially correlated, therefore can significantly contaminate the correlation functions of the weak lensing signals. We propose a method to correct for this contamination statistically, without any assumptions on the PSF and galaxy morphologies or their spatial distribution. We demonstrate our idea with the data from the W2 field of CFHTLenS.
description: 8 pages, 7 figures
Optimal Algorithmic Cooling of Spins
Creators: name: Elias, Yuval
name: Fernandez, José M.
name: Mor, Tal
name: Weinstein, Yossi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Algorithmic Cooling (AC) of Spins is potentially the first near-future application of quantum computing devices. Straightforward quantum algorithms combined with novel entropy manipulations can result in a method to improve the identification of molecules. We introduce here several new exhaustive cooling algorithms, such as the Tribonacci and k-bonacci algorithms. In particular, we present the ``all-bonacci'' algorithm, which appears to reach the maximal degree of cooling obtainable by the optimal AC approach.
description: 20 pages, 5 figures
Short Ballistic Josephson Coupling in Planar Graphene Junctions with Inhomogeneous Carrier Doping
Creators: name: Park, Jinho
name: Lee, Jae Hyeong
name: Lee, Gil-Ho
name: Takane, Yositake
name: Imura, Ken-Ichiro
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Lee, Hu-Jong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on short ballistic (SB) Josephson coupling in junctions embedded in a planar heterostructure of graphene. Ballistic Josephson coupling is confirmed by the Fabry-Perot-type interference of the junction critical current $I_c$. An exceptionally large $I_cR_N$ product close to $2Δ_0/e$ ($R_N$; normal-state junction resistance, $Δ_0$ ; zero-temperature superconducting energy gap) is an indication of SB strong Josephson coupling. $I_c$ shows a temperature dependence inconsistent with the conventional short-junction-like behavior; $I_c(T)$ curves deviate systematically from the standard Kulik-Omel'yanchuk prediction. We argue that this feature stems from the planar nature of graphene junction, which is susceptible to the effects of inhomogeneous carrier doping as well in graphene near the superconducting contacts.
description: 14 pages, 4 figures
Hall effect driven by non-collinear magnetic polarons in diluted magnetic semiconductors
Creators: name: Denisov, K. S.
name: Averkiev, N. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this letter we develop the theory of Hall effect driven by non-collinear magnetic textures (topological Hall effect - THE) in diluted magnetic semiconductors (DMS). We show that a carrier spin-orbit interaction induces a chiral magnetic ordering inside a bound magnetic polaron (BMP). The inner structure of non-collinear BMP is controlled by the type of spin-orbit coupling, allowing to create skyrmion- (Rashba) or antiskyrmion-like (Dresselhaus) configurations. The asymmetric scattering of itinerant carriers on polarons leads to the Hall signal which exists in weak external magnetic fields and low temperatures. We point out that DMS-based systems allow one to investigate experimentally the dependence of THE both on a carrier spin polarization and on a non-collinear magnetic texture shape.
description: 5 pages, 2 figures, 1 table and supplementary materials
Supplementary document for Full stokes polarimetry based on inverse-designed multi-foci metalens - 6890139.pdf
Creators: name: Wang, Shuyi
name: Hu, Tie
name: Sc, Wang
name: Wei, Yunxuan
name: Zihan, Mei
name: Yan, Bing
name: Zhou, Wen
name: Yang, Zhen Yu
name: Zheng, Jinkun
name: Peng, Yuan
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: supplementary material
Contextual Focus: A Cognitive Explanation for the Cultural Revolution of the Middle/Upper Paleolithic
Creators: name: Gabora, Liane
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Many elements of culture made their first appearance in the Upper Paleolithic. Previous hypotheses put forth to explain this unprecedented burst of creativity are found wanting. Examination of the psychological basis of creativity leads to the suggestion that it resulted from the onset of contextual focus: the capacity to focus or defocus attention in response to the situation, thereby shifting between analytic and associative modes of thought. New ideas germinate in a defocused state in which one is receptive to the possible relevance of many dimensions of a situation. They are refined in a focused state, conducive to filtering out irrelevant dimensions and condensing relevant ones.
description: 6 pages
FastMap: a fast algorithm for indexing, data-mining and visualization of traditional and multimedia datasets
Creators: name: Faloutsos, Christos
name: King-Ip  Lin
Publisher: name: Carnegie Mellon University
Year: 1976
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A very promising idea for fast searching in traditional and multimedia databases is to map objects into points in k-d space, using k feature-extraction functions, provided by a domain expert [25]. Thus, we can subsequently use highly fine-tuned spatial access methods (SAMs), to answer several types of queries, including the 'Query By Example' type (which translates to a range query); the 'all pairs' query (which translates to a spatial join [8]); the nearest-neighbor or best-match query, etc.However, designing feature extraction functions can be hard. It is relatively easier for a domain expert to assess the similarity/distance of two objects. Given only the distance information though, it is not obvious how to map objects into points.This is exactly the topic of this paper. We describe a fast algorithm to map objects into points in some k-dimensional space (k is user-defined), such that the dis-similarities are preserved. There are two benefits from this mapping: (a) efficient retrieval, in conjunction with a SAM, as discussed before and (b) visualization and data-mining: the objects can now be plotted as points in 2-d or 3-d space, revealing potential clusters, correlations among attributes and other regularities that data-mining is looking for.We introduce an older method from pattern recognition, namely, Multi-Dimensional Scaling (MDS) [51]; although unsuitable for indexing, we use it as yardstick for our method. Then, we propose a much faster algorithm to solve the problem in hand, while in addition it allows for indexing. Experiments on real and synthetic data indeed show that the proposed algorithm is significantly faster than MDS, (being linear, as opposed to quadratic, on the database size N), while it manages to preserve distances and the overall structure of the data-set.
title: An upper limit to the age of the galactic bar
Creators: name: Cole, AA
name: Weinberg, MD
Publisher: name: University of Massachusetts Amherst
Year: 2002
Subjects: subject: Galaxy : disk
subject: Galaxy : structure
subject: stars : carbon
subject: Astrophysics and Astronomy

description: This is a pre-published version which is collected from arXiv link. The published version is at http://iopscience.iop.org/1538-4357/574/1/L43?fromSearchPage=true
description: Using data from the Two Micron All Sky Survey, we identify a population of infrared carbon stars with J-KS ≥ 2 in the Milky Way. These stars are shown to trace the stellar bar previously identified in IR and optical surveys. The properties of C stars strongly suggest that they are of intermediate age. We conclude that the bar is likely to have formed more recently than 3 Gyr ago and must be younger than 6 Gyr. Implications and further tests of this conclusion are briefly discussed.
Corrupting the Transition to Private Ownership
Creators: name: Hochman, Gal
name: Eithan Hochman
name: Zilberman, David
Publisher: name: Zenodo
Year: 2021
Subjects: Transition economies
reforms
constitutional change
illicit trade
(mass) privatization
ownership structure
investment

description: In this chapter, we describe a political economic framework of an economy following transition to private ownership. The transition, characterized by massive privatization, is accompanied by a change in the legal system, which is influenced by the elite who may be described as either corrupt or non-corrupt. The ability of the corrupt elite to influence the ruling party may lead to weak legal institutions, which cause underinvestment, corruption, and capturing of lucrative industries by corrupt investors. By introducing heterogeneity among industries, we show that the corrupt investors corrupt the more lucrative industries, and in corrupt economies corrupt investors may separate themselves from the non-corrupt investors. Furthermore, we identified two methods used by the corrupt investors to siphon profit – output stealing and profit stealing – and illustrate that corrupt investors may substitute between the two methods to alleviate the constraints created by stronger institutions. To this end, strengthening the institutions only in one dimension may, at the end of the day, cause output, as well as investment, to decline.
title: Formulaire de permission pour « libérable » établi au nom du soldat du 11e cuirassiers Yves Pérotin
Creators: name: Colonel Huet Commandant Le 11e Régiment De Cuirassiers
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Deuxième guerre mondiale
subject: formalités de démobilisation
subject: liquidation des états de service des combattants

description: Formulaire de permission (30 jours) pour « libérable » du soldat du 11e cuirassiers ’Yves Pérotin (ex-maquisard du Vercors Pothier), Jargeau (Loiret) août 1945
description: Source: GED Campus Condorcet Fonds Yves Pérotin CNRS-IHTP ARC 143 ; 3ARM_29
Supernova Brightening from Chameleon-Photon Mixing
Creators: name: Burrage, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Measurements of standard candles and measurements of standard rulers give an inconsistent picture of the history of the universe. This discrepancy can be explained if photon number is not conserved as computations of the luminosity distance must be modified. I show that photon number is not conserved when photons mix with chameleons in the presence of a magnetic field. The strong magnetic fields in a supernova mean that the probability of a photon converting into a chameleon in the interior of the supernova is high, this results in a large flux of chameleons at the surface of the supernova. Chameleons and photons also mix as a result of the intergalactic magnetic field. These two effects combined cause the image of the supernova to be brightened resulting in a model which fits both observations of standard candles and observations of standard rulers.
description: 17 pages, 3 figures
FastCARS : fast, correlation-aware sampling for network data mining
Creators: name: Pan, Jia-Yu
name: Srinivasan  Seshan
name: Faloutsos, Christos
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Abstract: "Measuring traffic on routers is vital for finding patterns, traffic modeling, and anomaly detection. Unfortunately, technology trends are making it more and more difficult to observe and record the large amount of data generated by high speed links. Traffic sampling techniques provide a simple alternative that reduces the volume of data collected. Real world data is seldom temporally independent and data observed at one time is likely to have important correlations with data observed at close-by instants in time. A good sampling method should be able to give measurements that take this correlation into account. Unfortunately, existing sampling techniques largely hide any temporal relationship in the recorded data. Our proposed method, 'FastCARS', naturally captures statistics for packets that are 1, 2 or more steps away. It has the following properties: (a) provides accurate measurements of full trace's statistics, (b) is simple and scalable for implementation, (c) captures correlations between successive packets, as well as packets that are further apart, (d) evenly separate [sic] sampling efforts over time, and (e) generalizes previously proposed sampling methods and includes them as special cases. We also propose several new tools for network data mining and demonstrate the good quality of the information provided by FastCARS. These tools include: (a) The n-step histograms which give correlated statistics at different levels of temporal correlation, (b) the convolution test which could be used to examine the dependence level betwen packet arrivals. (c) the n-step packet-size/delay graph which provides accurate bandwidth estimation and load monitoring, and (d) the n-step flow graph which effectively visualizes flow patterns hidden in a trace. The experimental results on multiple, real-world datasets (479Mb in total), show that the proposed FastCARS sampling method and these new data mining tools are effective. With these tools, we show that the independence assumption of packet arrival is not correct, and that packet trains may not be the only cause of dependence among arrivals. The provided tools may be useful in applications such as monitoring link load and traffic flows."
Photo- and Electron-Production of Mesons on Nucleons and Nuclei
Creators: name: Oset, E.
name: Döring, M.
name: Strottman, D.
name: Jido, D.
name: Napsuciale, M.
name: Sasaki, K.
name: Vaquera-Araujo, C. A.
name: Kaskulov, M.
name: Hernandez, E.
name: Nagahiro, H.
name: Hirenzaki, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In these lectures I will show some results obtained with the chiral unitary approach applied to the photo and electroproduction of mesons. The results for photoproduction of $ηπ^0 p$ and $K^0 π^0 Σ^+$, together with related reactions will be shown, having with common denominator the excitation of the $Δ(1700)$ resonance which is one of those dynamically generated in the chiral unitary approach. Then I will show results obtained for the $e^+ e^- \to ϕf_0(980)$ reaction which reproduce the bulk of the data except for a pronounced peak, giving support to a new mesonic resonance, X(2175). Results will also be shown for the electromagnetic form factors of the $N^*(1535)$ resonance, also dynamically generated in this approach. Finally, I will show some results on the photoproduction of the $ω$ in nuclei, showing that present experimental results claiming a shift of the $ω$ mass in the medium are tied to a particular choice of background and are not conclusive. One the other hand, the same experimental results show unambiguously a huge increase of the $ω$ width in the nuclear medium.
description: Lecture at the "International School of Nuclear Physics", 29th Course Quarks in Hadrons and Nuclei, Erice, Italy, September 2007. Note added in Proofs concerning the mixed events technique and other comments on omega production
Interstellar neutral helium in the heliosphere from IBEX observations. V. Observations in IBEX-Lo ESA steps 1, 2, & 3
Creators: name: Swaczyna, Paweł
name: Bzowski, Maciej
name: Kubiak, Marzena A.
name: Sokół, Justyna M.
name: Fuselier, Stephen A.
name: Galli, André
name: Heirtzler, David
name: Kucharek, Harald
name: McComas, David J.
name: Möbius, Eberhard
name: Schwadron, Nathan A.
name: Wurz, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Direct-sampling observations of interstellar neutral (ISN) He by Interstellar Boundary Explorer (IBEX) provide valuable insight into the physical state of and processes operating in the interstellar medium ahead of the heliosphere. The ISN He atom signals are observed at the four lowest ESA steps of the IBEX-Lo sensor. The observed signal is a mixture of the primary and secondary components of ISN He and H. Previously, only data from one of the ESA steps have been used. Here, we extended the analysis to data collected in the three lowest ESA steps with the strongest ISN He signal, for the observation seasons 2009-2015. The instrument sensitivity is modeled as a linear function of the atom impact speed onto the sensor's conversion surface separately for each ESA step of the instrument. We found that the sensitivity increases from lower to higher ESA steps, but within each of the ESA steps it is a decreasing function of the atom impact speed. This result may be influenced by the hydrogen contribution, which was not included in the adopted model, but seems to exist in the signal. We conclude that the currently accepted temperature of ISN He and velocity of the Sun through the interstellar medium do not need a revision, and we sketch a plan of further data analysis aiming at investigating ISN H and a better understanding of the population of ISN He originating in the outer heliosheath.
description: 20 pages, 5 figures, 5 tables, accepted for publication in the The Astrophysical Journal
Zero-temperature equation of state of solid 4He at low and high pressures
Creators: name: Cazorla, C.
name: Boronat, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the zero-temperature equation of state (EOS) of solid 4He in the hexagonal closed packet (hcp) phase over the 0-57 GPa pressure range by means of the Diffusion Monte Carlo (DMC) method and the semi-empirical Aziz pair potential HFD-B(HE). In the low pressure regime (P ~ 0-1 GPa) we assess excellent agreement with experiments and we give an accurate description of the atomic kinetic energy, Lindemann ratio and Debye temperature over a wide range of molar volumes (22-6 cm^{3}/mol). However, on moving to higher pressures our calculated P-V curve presents an increasingly steeper slope which ultimately provides differences within ~40 % with respect to measurements. In order to account for many-body interactions arising in the crystal with compression which are not reproduced by our model, we perform additional electronic density-functional theory (DFT) calculations for correcting the computed DMC energies in a perturbative way. We explore both generalized gradient and local density approximations (GGA and LDA, respectively) for the electronic exchange-correlation potential. By proceeding in this manner, we show that discrepancies with respect to high pressure data are reduced to 5-10 % with few computational extra cost. Further comparison between our calculated EOSs and ab initio curves deduced for the perfect crystal and corrected for the zero-point motion of the atoms enforces the reliability of our approach.
description: 29 pages, 9 figures. To be published in Journal of Physics: Condensed Matter
Fast Time Sequence Indexing for Arbitrary Lp Norms
Creators: name: Byoung-Kee  Yi
name: Faloutsos, Christos
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Fast indexing in time sequence databases for similarity searching has attracted a lot of research recently. Most of the proposals, however, typically centered around the Euclidean distance and its derivatives. We examine the problem of multimodal similarity search in which users can choose the best one from multiple similarity models for their needs.
Andreev reflection in a Y-shaped graphene-superconductor device
Creators: name: Wang, Chao
name: Zou, Youlian
name: Song, Juntao
name: Li, Yu-Xian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using the non-equilibrium Green function method, we study the Andreev reflection in a Y-shaped graphene-superconductor device by tight-binding model. Considering both the zigzag and armchair terminals, we confirm that the zigzag terminals are the better choice for detecting the Andreev reflection without no external field. Due to scattering from the boundaries of the finite-size centre region, the difference between Andreev retroreflection and specular reflection is hard to be distinguished. Although adjusting the size of the device makes the difference visible, to distinguish them quantitatively is still impossible through the transport conductance. The problem is circumvented when applying a perpendicular magnetic field on the centre region, which makes the incident electrons and the reflected holes propagate along the edge or the interface. In this case, the retroreflected and specular reflected holes from the different bands have opposite effective masses, therefore the moving direction of one is opposite to the other. Which external terminal the reflected holes flow into depends entirely on the kind of the Andreev reflection. Therefore, the specular Andreev reflection can be clearly distinguished from the retroreflected one in the presence of strong magnetic field, even for the device with finite size.
description: 7 pages, 5 figures
Masses and sigma terms of doubly charmed baryons up to $\mathcal{O}(p^4)$ in manifestly Lorentz-invariant baryon chiral perturbation theory
Creators: name: Yao, De-Liang
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the masses and sigma terms of the doubly charmed baryons up to next-to-next-to-next-to-leading order (i.e., $\mathcal{O}(p^4)$) in a covariant baryon chiral perturbation theory by using the extended-on-mass-shell renormalization scheme. Their expressions both in infinite and finite volumes are provided for chiral extrapolation in lattice QCD. As a first application, our chiral results of the masses are confronted with the existing lattice QCD data in the presence of finite volume corrections. Up to $\mathcal{O}(p^3)$ all relevant low energy constants can be well determined. As a consequence, we obtain the physical values for the masses of $Ξ_{cc}$ and $Ω_{cc}$ baryons by extrapolating to the physical limit. Our determination of the $Ξ_{cc}$ mass is consistent with the recent experimental value by LHCb collaboration, however, larger than the one by SELEX collaboration. In addition, we predict the pion-baryon and strangeness-baryon sigma terms, as well as the mass splitting between the $Ξ_{cc}$ and $Ω_{cc}$ states. Their quark mass dependences are also discussed. The numerical procedure can be applied to the chiral results of $\mathcal{O}(p^4)$ order, where more unknown constants are involved, when more data are available for unphysical pion masses.
description: 12 pages, 6 figures and 3 tables
Sparse and Functional Principal Components Analysis
Creators: name: Allen, Genevera I.
name: Weylandt, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Regularized variants of Principal Components Analysis, especially Sparse PCA and Functional PCA, are among the most useful tools for the analysis of complex high-dimensional data. Many examples of massive data, have both sparse and functional (smooth) aspects and may benefit from a regularization scheme that can capture both forms of structure. For example, in neuro-imaging data, the brain's response to a stimulus may be restricted to a discrete region of activation (spatial sparsity), while exhibiting a smooth response within that region. We propose a unified approach to regularized PCA which can induce both sparsity and smoothness in both the row and column principal components. Our framework generalizes much of the previous literature, with sparse, functional, two-way sparse, and two-way functional PCA all being special cases of our approach. Our method permits flexible combinations of sparsity and smoothness that lead to improvements in feature selection and signal recovery, as well as more interpretable PCA factors. We demonstrate the efficacy of our method on simulated data and a neuroimaging example on EEG data.
description: The published version of this paper incorrectly thanks "Luofeng Luo" instead of "Luofeng Liao" in the Acknowledgements
Fast Text Access Methods for Optical and Large Magnetic Disks: Designs and Performance Comparison
Creators: name: Faloutsos, Christos
name: Chan, Raphael
Publisher: name: Carnegie Mellon University
Year: 1996
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: High capacity disks, especially optical ones, are commercially available. These disks are ideal for archiving large text data bases. In this work, we examine efficient searching techniques for such applications. We propose a unifying framework, which reveals the similarities between signature files and an inverted file using a hash table. Then, we design methods that combine the ease of insertion of the signature files with the fast retrieval of the inverted files. We develop analytical models for their performance and we verify it through experimentation on a 2.8 Mb data base. The agreement between theory and experimentation is very good. The results show that the proposed methods achieve fast retrieval, they require a modest 10%-30% space overhead, (as opposed to 50%- 300% overhead [13] for the inverted files), and they do not require re-writing; thus, they can handle insertions easily, they permit searches during an insertion and they can be used with write-once optical disks. Using our verified model, the performance predictions for the proposed methods on large data bases (e.g., 250 Mb) are very promising.
Solar gamma rays and modulation of cosmic rays in the inner heliosphere
Creators: name: Orlando, Elena
name: Giglietto, Nicola
name: Moskalenko, Igor
name: Raino', Silvia
name: Strong, Andrew
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The first evidence of the gamma-ray emission from the quiescent Sun was found in the archival EGRET data that was later confirmed by Fermi-LAT observations with high significance. This emission is produced by Galactic cosmic rays (CRs) penetrating the inner heliosphere and inter- acting with the solar atmosphere and optical photons. The solar emission is characterized by two spatially and spectrally distinct components: (i) disk emission due to the CR cascades in the solar atmosphere, and (ii) spatially extended inverse Compton (IC) emission due to the CR electrons scattering off of solar photons. The intensity of both components associated with Galactic CRs anti-correlate with the level of the solar activity being the brightest during solar minimum. In this paper we discuss updates of the models of the IC component of the emission based on CR measurements made at different levels of solar activity, and we make predictions for e- ASTROGAM and AMEGO, proposed low-energy gamma-ray missions.
description: 7 pages, 3 figures, Proceedings of the 35th International Cosmic Ray Conference, ICRC2017
Fast subsequence matching in time-series databases
Creators: name: Faloutsos, Christos
name: M.  Ranganathan
name: Manolopoulos, Yannis
Publisher: name: Carnegie Mellon University
Year: 1988
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We present an efficient indexing method to locate 1-dimensional subsequences within a collection of sequences, such that the subsequences match a given (query) pattern within a specified tolerance. The idea is to map each data sequences into a small set of multidimensional rectangles in feature space. Then, these rectangles can be readily indexed using traditional spatial access methods, like the R*-tree [9]. In more detail, we use a sliding window over the data sequence and extract its features; the result is a trail in feature space. We propose an efficient and effective algorithm to divide such trails into sub-trails, which are subsequently represented by their Minimum Bounding Rectangles (MBRs). We also examine queries of varying lengths, and we show how to handle each case efficiently. We implemented our method and carried out experiments on synthetic and real data (stock price movements). We compared the method to sequential scanning, which is the only obvious competitor. The results were excellent: our method accelerated the search time from 3 times up to 100 times.
A Non-Phylogenetic Conceptual Network Architecture for Organizing Classes of Material Artifacts into Cultural Lineages
Creators: name: Gabora, Liane
name: Leijnen, Stefan
name: Veloz, Tomas
name: Lipo, Carl
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The application of phylogenetic techniques to the documentation of cultural history can present a distorted picture due to horizontal transmission and blending. Moreover, the units of cultural transmission must be communicable concepts, rather than conveniently measurable attributes, and relatedness between elements of culture often resides at the conceptual level, something not captured by phylogenetic methods, which focus on measurable attributes. (For example, mortars and pestles are as related as two artifacts could be, despite little similarity at the attribute level.) This paper introduces a new, cognitively inspired framework for chronicling material cultural history, building on Lipo's (2005) network-based computational approach. We show that by incorporating not just superficial attributes of artifact samples (e.g. fluting) but also conceptual knowledge (e.g. information about function), a different pattern of cultural ancestry emerges.
description: 6 pages. arXiv admin note: substantial text overlap with arXiv:1206.4386
Fast Sizing Calculations for Meshing
Creators: name: Miller, Gary L.
name: Phillips, Todd
name: Sheehy, Donald
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Provably correct algorithms for meshing difficult domains in three dimensions have been recently developed in the literature. These algorithms handle the problem of sharp angles (< π/2) between segments and between facets by constructing protective collars around these regions. The collars are approximately sized according to the local feature size of the input. With the eventual goal of developing time-efficient algorithms for the same mesh generation problems, we give a method for estimating the feature size of a 3D piecewise-linear-complex of size n on domain Ω in time O(n log Δ+m), where Δ is the spread of the input. The linear term m E O(∫Ω 1/ lfs3) is bounded above by the output size of a quality generated mesh. Our algorithm is based on early termination of the Sparse-Voronoi- Refinement (SVR) meshing algorithm, which is not guaranteed to terminate in the presence of sharp angles.
Free holomorphic functions and interpolation
Creators: name: Popescu, Gelu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47A57; 47A56; 46L52; 46T25

description: In this paper we obtain a noncommutative multivariable analogue of the classical Nevanlinna-Pick interpolation problem for analytic functions with positive real parts on the open unit disc. As consequences, we deduce some results concerning operator-valued analytic interpolation on the unit ball on C^n.
description: 20 pages
Dynamical Disequilibrium, Transformation, and the Evolution and Development of Sustainable Worldviews
Creators: name: Gabora, Liane
name: Merrifield, Maegan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Neurons and Cognition (q-bio.NC)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: This chapter begins by outlining a promising, new theoretical framework for the process by which human culture evolves inspired by the views of complexity theorists on the problem of how life began. Elements of culture, like species, evolve over time; that is, they exhibit cumulative change that is adaptive in nature. By studying how biological evolution got started, we gain insight into not just the specifics of biological evolution, but also general insights into the initiation of any evolutionary process that may be applicable to culture. We then explore the implications of this new framework for culture on the transformative processes of individuals. Specifically, we will address what this emerging perspective on cultural evolution implies for to go about attaining a sustainable worldview; that is, a web of habits, understandings, and ways of approaching situations that is conducive to the development of a sustainable world.
Fast Set Operations Using Treaps
Creators: name: Reid-Miller, Margaret
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We present parallel algorithms for union, intersection and difference on ordered sets using random balanced binary trees (treaps [26]). For two sets of size n and m (m ≤ n) the algorithms run in expected O(mlg(n=m)) work and O(lg n) depth (parallel time) on an EREW PRAM with scan operations (implying O(lg2 n) depth on a plain EREW PRAM). As with the sequential algorithms on treaps for insertion and deletion, the main advantage of our algorithms are their simplicity. In fact, our algorithms for set operations seem simpler than previous sequential algorithms with the same work bounds, and might therefore also be useful in a sequential context. To analyze the effectiveness of the algorithms we implemented both sequential and parallel versions of the algorithms and ran several experiments on them. Our parallel implementation uses the Cilk [5] shared memory runtime system on a 16 processor SGI Power Challenge and a 6 processor Sun Ultra Enterprise 3000. It shows reasonable speedup: 6.3 to 6.8 speedup on 8 processors of the SGI, and 4.1 to 4.4 speedup on 5 processors of the Sun.
Emergence and Computation at the Edge of Classical and Quantum Systems
Creators: name: Licata, Ignazio
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem of emergence in physical theories makes necessary to build a general theory of the relationships between the observed system and the observing system. It can be shown that there exists a correspondence between classical systems and computational dynamics according to the Shannon-Turing model. A classical system is an informational closed system with respect to the observer; this characterizes the emergent processes in classical physics as phenomenological emergence. In quantum systems, the analysis based on the computation theory fails. It is here shown that a quantum system is an informational open system with respect to the observer and able to exhibit processes of observational, radical emergence. Finally, we take into consideration the role of computation in describing the physical world.
description: 16 pages