cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
PSZSPT: a joint Planck and SPT-SZ cluster catalog
Creators: name: Melin, J. -B.
name: Bartlett, J. G.
name: Tarrío, P.
name: Pratt, G. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first cluster catalog extracted from combined space-based (Planck) and ground-based (South Pole Telescope; SPT-SZ) millimeter data. We developed and applied a matched multi-filter (MMF) capable of dealing with the different transfer functions and resolutions of the two datasets. We verified that it produces results consistent with publications from Planck and SPT collaborations when applied on the datasets individually. We also verified that Planck and SPT-SZ cluster fluxes are consistent with each other. When applied blindly to the combined dataset, the MMF generated a catalog of 419 detections ($S/N>5$), of which 323 are already part of the SPT-SZ or PSZ2 catalogs; 54 are new SZ detections, which have been identified in other catalogs or surveys; and 42 are new unidentified candidates. The MMF takes advantage of the complementarity of the two datasets, Planck being particularly useful for detecting clusters at a low redshift ($z<0.3$), while SPT is efficient at finding higher redshift ($z>0.3$) sources. This work represents a proof of concept that blind cluster extraction can be performed on combined, inhomogeneous millimeter datasets acquired from space and ground. This result is of prime importance for planned ground-based cosmic microwave background (CMB) experiments (e.g., Simons Observatory, CMB-S4) and envisaged CMB space missions (e.g., PICO, Backlight) that will detect hundreds of thousands of clusters in the low mass regime ($M_{500} \leqslant 10^{14} M_\odot$), for which the various sources of intra-cluster emission (gas, dust, synchrotron) will be of the same order of magnitude and hence require broad ground and space frequency coverage with a comparable spatial resolution for adequate separation.
description: 20 pages ; now includes cross-identifications with MARD-Y3 and WHY catalogs ; this version of the article matches the version accepted for publication in A&A
Nonanalyticity of the nonabelian five-dimensional Chern-Simons term
Creators: name: Assunção, J. F.
name: Furtado, J.
name: Mariz, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we study the behavior of the nonabelian five-dimensional Chern-Simons term at finite temperature regime in order to verify the possible nonanalyticity. We employ two methods, a perturbative and a non-perturbative one. No scheme of regularization is needed, and we verify the nonanalyticity of the self-energy of the photon in the origin of momentum space by two conditions that do not commute, namely, the static limit $(k_0=0,\vec k\rightarrow 0)$ and the long wavelength limit $(k_0\rightarrow 0,\vec k= 0)$, while its tensorial structure holds in both limits.
description: 12 pages, 2 figures, version to appear in EPL
Lieb-Schultz-Mattis theorem for quasi-topological systems
Creators: name: Freedman, Michael
name: Nayak, Chetan
name: Shtengel, Kirill
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we address the question of the existence of a spectral gap in a class of local Hamiltonians. These Hamiltonians have the following properties: their ground states are known exactly; all equal-time correlation functions of local operators are short-ranged; and correlation functions of certain non-local operators are critical. A variational argument shows gaplessness with $ω\propto k^2$ at critical points defined by the absence of certain terms in the Hamiltonian, which is remarkable because equal-time correlation functions of local operators remain short-ranged. We call such critical points, in which spatial and temporal scaling are radically different, quasi-topological. When these terms are present in the Hamiltonian, the models are in gapped topological phases which are of special interest in the context of topological quantum computation.
description: v2: The version published in Phys. Rev B. A new section has been added; a gap in the earlier version of the proof has been eliminated
Nucleon structure and spin effects in elastic hadron scattering
Creators: name: Selyugin, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Soft diffraction phenomena in elastic nucleon scattering are considered from the viewpoint of the spin dependence of the interaction potential. Spin-dependent pomeron effects are analyzed for elastic $pp$ scattering, spin-dependent differential cross sections and spin correlation parameters are calculated. The spin correlation parameter $A_N$ is examined on the basis of experimental data from $\sqrt{s} = 4.9 \ GeV$ up to $23.4 \ $GeV in the framework of the extended High Energy Generalized Structure (HEGS) model. It is shown that the existing experimental data of proton-proton and proton-antiproton elastic scattering at high energy in the region of the diffraction minimum and at large momentum transfer give the support of the existence of the energy-independent part of the hadron spin flip amplitude.
description: 20 pages, 18 figures, typos are removed, some references are corrected
Tourism planning for Kandy, Sri Lanka : a framework
Creators: name: Friesen, Anita
Publisher: name: University of British Columbia
Year: 2009

description: The city of Kandy, located in the central hill-region of Sri Lanka, is one of the country's most popular tourist destinations. Both foreign and domestic travelers are attracted to the city's natural beauty, mild climate, historical and cultural significance, and wide variety of attractions. This thesis develops a framework of recommendations for tourism planning based upon a thorough analysis of the various elements of tourism in Kandy. This is achieved through an examination of the historical, social, physical, economic, political, cultural and institutional dimensions of tourism within Kandy and by exploring the nature of the linkages between these elements. The results of this study are derived from several types of research, including an analysis of statistical sources, a review of the tourism planning literature, participatory observation of the tourist experience in Kandy, interviews with individuals involved in the tourism industry in Kandy, a tourism planning workshop held in Kandy, and a questionnaire given to a sample of tourists. Tourism development in Kandy has not been accompanied by the anticipated scale and distribution of benefits to the local population. In addition, a number of negative social, cultural and environmental impacts have resulted from tourism which have adversely affected the quality of life of residents. If pursued as it has been in the past, future tourism development in Kandy could result in a magnification of these negative impacts, thereby placing further demands on the natural resources and municipal infrastructure systems, and leading to an increase in undesirable cultural and social change. Without appropriate planning, increased tourism development could result in degradation in the tourism product and a decline in the tourism industry. This thesis argues that if tourism development for Kandy is planned in a manner that balances the principles of economic viability, environmental consciousness, cultural sensitivity, social responsibility and tourist satisfaction, it could potentially lead to minimized negative repercussions, magnified positive impacts, and an improved quality of life for the local population.
Distributed Charge Models of Liquid Methane and Ethane for Dielectric Effects and Solvation
Creators: name: Thakur, Atul C.
name: Remsing, Richard C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Liquid hydrocarbons are often modeled with fixed, symmetric, atom-centered charge distributions and Lennard-Jones interaction potentials that reproduce many properties of the bulk liquid. While useful for a wide variety of applications, such models cannot capture dielectric effects important in solvation, self-assembly, and reactivity. The dielectric constants of hydrocarbons, such as methane and ethane, physically arise from electronic polarization fluctuations induced by the fluctuating liquid environment. In this work, we present non-polarizable, fixed-charge models of methane and ethane that break the charge symmetry of the molecule to create fixed molecular dipoles, the fluctuations of which reproduce the experimental dielectric constant. These models can be considered a mean-field-like approximation that can be used to include dielectric effects in large-scale molecular simulations of polar and charged molecules in liquid methane and ethane. We further demonstrate that solvation of model ionic solutes and a water molecule in these fixed-dipole models improve upon dipole-free models.
description: 13 pages, 11 figures
The Singapore Pork Market: a Preliminary Assessment of the Potential for Australian Exports
Creators: name: Brewis-Weston, Symon G.
name: Lewis, Philip E.T.
name: Brewis-Weston, Symon G.
name: Lewis, Philip E.T.
Publisher: name: Unknown
Year: 1996
Subjects: International Relations/Trade

description: Australian pig producers, facing a limited domestic market, need to make inroads into export markets. The predominantly Chinese city state of Singapore provides the potential to be a valuable source of demand. The distribution system in Singapore is considered from the perspective of a potential entrant. The potential for Australian producers to take advantage of the Singapore markets are examined, together with the likely impediments to achieving this potential.
SLE coordinate changes
Creators: name: Schramm, Oded
name: Wilson, David B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35; 60G99

description: The purpose of this note is to describe a framework which unifies radial, chordal and dipolar SLE. When the definition of SLE(kappa;rho) is extended to the setting where the force points can be in the interior of the domain, radial SLE(kappa) becomes chordal SLE(kappa;rho), with rho=kappa-6, and vice versa. We also write down the martingales describing the Radon-Nykodim derivative of SLE(kappa;rho_1,...,rho_n) with respect to SLE(kappa).
description: 10 pages
title: Quasi-experiments in political behaviour
Creators: name: Dunaiski, Maurice
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2021

description: Political science has long sought to understand how citizens form their political identities, values and behaviours. However, robust causal evidence on how policy interventions can shape the political socialisation process remains limited. The three papers that make up this thesis investigate how citizens - and young citizens in particular - change their political attitudes and behaviours in response to large-scale policy interventions, specifically: income transparency, enfranchisement and compulsory voting. In the first paper, I take advantage of a quasi-experiment in Finland to study whether income transparency - the public release of citizens’ income information - affects support for redistribution. Using survey data and a before-and-after research design, I show that income transparency leaves public support for redistribution largely unchanged, but that young people increase their support for redistribution in response to the intervention. This suggests that redistributive preferences are rooted in more stable, underlying ideologies, that are difficult to alter once they are formed in early adulthood. In the second paper, I leverage a quasi-experiment in Germany to study whether enfranchisement improves citizens’ political maturity. Using survey data and a difference-indifferences approach, I show that enfranchising 16-year-olds can equalise prior differences in political maturity between underage and adult youth. This suggests that political maturity should be understood not just as a precondition, but also as an outcome of the right to vote. In the third paper, I take advantage of a quasi-experiment in Brazil to investigate whether compulsory voting instils voting habits in young people. Using administrative data and a regression discontinuity design, I show that voting fails to be habit-forming when it is compulsory. This finding clarifies the scope conditions of prior research on voting habits, as it runs counter to available evidence from voluntary voting systems.
On-farm Costs of Soil Salinisation: a Case Study for the Liverpool Plains in New South Wales
Creators: name: Greiner, Romy
name: Greiner, Romy
Publisher: name: Unknown
Year: 1996
Subjects: Land Economics/Use

description: Land affected by a high water table displays waterlogging and salinity effects. This causes costs to farmers through additional land management problems, loss of soil productivity and results in a decline of the farm's capital value. A multi-period mathematical model is developed to investigate best land and financial management strategies for such farms. Water tables rise mainly due to ground water import caused by high recharge in the surrounding parts of the catchment. The hydrological connection between model farm and catchment is established through the variable "condition of the upper aquifer". This paper analyses the effects of different levels of ground water import in terms of progress of soil salinisation, associated farm management responses and farm income development. The condition of the upper aquifer is shown to be decisive for the advance of salinisation and for the financial viability of the model farm. If the upper aquifer is draining or if it causes only minor rise of the water table, then the farming enterprise remains viable and long-term sustainable. If the aquifer condition causes high rates of upward leakage, then salinisation erodes farm productivity to an extent where no financially viable land management strategy is available.
Weakly nonlocal Poisson brackets: tools, examples, computations
Creators: name: Casati, Matteo
name: Lorenzoni, Paolo
name: Valeri, Daniele
name: Vitolo, Raffaele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Symbolic Computation (cs.SC)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We implement an algorithm for the computation of Schouten bracket of weakly nonlocal Hamiltonian operators in three different computer algebra systems: Maple, Reduce and Mathematica. This class of Hamiltonian operators encompass almost all the examples coming from the theory of (1+1)-integrable evolutionary PDEs
description: 30 pages. Keywords: Poisson bracket, Hamiltonian operator, Schouten bracket, partial differential equations, integrable systems
Learning nonsingular phylogenies and hidden Markov models
Creators: name: Mossel, Elchanan
name: Roch, Sébastien
Publisher: name: arXiv
Year: 2005
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 60J10, 60J20, 68T05, 92B10 (Primary)

description: In this paper we study the problem of learning phylogenies and hidden Markov models. We call a Markov model nonsingular if all transition matrices have determinants bounded away from 0 (and 1). We highlight the role of the nonsingularity condition for the learning problem. Learning hidden Markov models without the nonsingularity condition is at least as hard as learning parity with noise, a well-known learning problem conjectured to be computationally hard. On the other hand, we give a polynomial-time algorithm for learning nonsingular phylogenies and hidden Markov models.
description: Published at http://dx.doi.org/10.1214/105051606000000024 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Insights into searches for anisotropies in the nanohertz gravitational-wave background
Creators: name: Ali-Haïmoud, Yacine
name: Smith, Tristan L.
name: Mingarelli, Chiara M. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Within the next several years pulsar timing arrays (PTAs) are positioned to detect the stochastic gravitational-wave background (GWB) likely produced by the collection of inspiralling super-massive black holes binaries, and potentially constrain some exotic physics. So far most of the pulsar timing data analysis has focused on the monopole of the GWB, assuming it is perfectly isotropic. The natural next step is to search for anisotropies in the GWB. In this paper, we use the recently developed PTA Fisher matrix to gain insights into optimal search strategies for GWB anisotropies. For concreteness, we apply our results to EPTA data, using realistic noise characteristics of its pulsars. We project the detectability of a GWB whose angular dependence is assumed to be a linear combination of predetermined maps, such as spherical harmonics or coarse pixels. We find that the GWB monopole is always statistically correlated with these maps, implying a loss of sensitivity to the monopole when searching simultaneously for anisotropies. We then derive the angular distributions of the GWB intensity to which a PTA is most sensitive, and illustrate how one may use these "principal maps" to approximately reconstruct the angular dependence of the GWB. Since the principal maps are neither perfectly anisotropic nor uncorrelated with the monopole, we also develop a frequentist criterion to specifically search for anisotropies in the GWB without any prior knowledge about their angular distribution. Lastly, we show how to recover existing EPTA results with our Fisher formalism, and clarify their meaning. The tools presented here will be valuable in guiding and optimizing the computationally demanding analyses of pulsar timing data.
description: 21 pages, 14 figures. Version accepted for publication in PRD after minor changes
Marco Modenesi. « Musiques et chansons »
Creators: name: Fianco, Fabiana
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Compte rendu de Modenesi, M. (éd.) (2020). « Musiques et chansons ». Ponti/Ponts. Langue littératures civilisations des pays francophones, 20, 318 pp.

description: Il Tolomeo
Search for Lepton and Baryon Number Violating tau- Decays into Lambda-bar pi- and Lambda pi-
Creators: name: Miyazaki, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have searched for tau lepton decays, tau- -> Lambda-bar pi- and tau- -> Lambda pi-, that simultaneously violate the conservation of the lepton and baryon number using a data sample of 154 fb^{-1} collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. No evidence for a signal was found in either of the decay modes and we set the following upper limits for the branching fractions: B(tau^- -> Lambda-barπ-) < 1.4 * 10^{-7} and B(tau^- -> Lambda pi^-) < 0.72 * 10^{-7} at the 90% confidence level. This is the first search ever performed for these modes.
description: 11 pages, 12 figures
Maximal Speed of Quantum Propagation
Creators: name: Arbunich, Jack
name: Pusateri, Fabio
name: Sigal, Israel Michael
name: Soffer, Avraham
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q99, 81S99, 35Q40, 35Q41

description: For Schroedinger equations with both time-independent and time-dependent Kato potentials, we give a simple proof of the maximal speed bound. The latter states that the probability to find the quantum system outside the ball of radius proportional to the time lapsed decays as an inverse power of time. We give an explicit expression for the constant of proportionality in terms of the maximal energy available to the initial condition. For the time-independent part of the interaction, we require neither decay at infinity nor smoothness.
description: Minor changes to the presentation and the proof of Theorem 2.1
Dispersion relation of the non-linear Klein-Gordon equation through a variational method
Creators: name: Amore, P.
name: Raya, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive approximate expressions for the dispersion relation of the nonlinear Klein-Gordon equation in the case of strong nonlinearities using a method based on the Linear Delta Expansion. All the results obtained in this article are fully analytical, never involve the use of special functions, and can be used to obtain systematic approximations to the exact results to any desired degree of accuracy. We compare our findings with similar results in the literature and show that our approach leads to better and simpler results.
description: 10 pages, 3 figures, matches published version
Developments in the Japanese Beef Market Following Import Liberalisation
Creators: name: Chadee, Doren
name: Mori, Hiroshi
name: Chadee, Doren
name: Mori, Hiroshi
Publisher: name: Unknown
Year: 1996
Subjects: International Relations/Trade

description: Over the last several years there has been increasing pressure on most western industrialised countries to liberalise trade for food and agricultural products and yet the full implications of freer trade are not always well understood. This paper attempts to fill this gap by reviewing the developments in the Japanese beef market following import liberalisation. We conclude that the Japanese beef market has experienced major structural changes over a relatively short period as a result of liberalising beef imports. The most apparent impact has been on Japanese consumers who have benefited from lower retail beef prices and a greater variety of beef cuts to choose from. The types and quality of beef imported have also changed and consequently major suppliers have adapted their production systems and their products to the changing taste and preferences of Japanese consumers. Beef exporters to Japan, on the other hand, have experienced declining wholesale prices but have, nevertheless, benefited from the growing size of the market. Developments in the wider economy, such as changes in the retail distribution systems and the exchange rate have also influenced the beef sector.
Detecting seasonal episodic-like spatiotemporal memory patterns using animal movement modelling
Creators: name: Thompson, Peter R.
name: Derocher, Andrew E.
name: Edwards, Mark A.
name: Lewis, Mark A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: 1. Spatial memory plays a role in the way animals perceive their environments, resulting in memory-informed movement patterns that are observable to ecologists. Developing mathematical techniques to understand how animals use memory in their environments allows for an increased understanding of animal cognition. 2. Here we describe a model that accounts for the memory of seasonal or ephemeral qualities of an animal's environment. The model captures multiple behaviors at once by allowing for resource selection in the present time as well as long-distance navigations to previously visited locations within an animal's home range. 3. We performed a set of analyses on simulated data to test our model, determining that it can provide informative results from as little as one year of discrete-time location data. We also show that the accuracy of model selection and parameter estimation increases with more location data. 4. This model has potential to identify a specific mechanism in which animals use memory to optimize their foraging, by revisiting temporally and predictably variable resources at consistent time lags.
description: 23 pages, including title and abstract; 4 tables; 3 figures; one Appendix containing 2 additional tables and 1 additional figure
Stability and Change of Cortisol Reactivity to a Laboratory Stressor from Early to Middle Childhood
Creators: name: Leppert, Katherine A.
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Psychobiology
subject: Developmental psychology
subject: Cortisol
subject: Middle childhood
subject: Preschool
subject: Psychopathology
subject: Stability

description: This study examined the stability and change of children’s cortisol reactivity to a laboratory stressor from early to middle childhood and moderators of change. Ninety-six children completed stress-inducing laboratory tasks and provided five salivary cortisol samples at preschool age (T1; M = 49.88 months, SD = 9.51 months) and three years later (T2; M = 87.44 months, SD = 11.42 months). At T1, parents completed clinical interviews assessing child and parent psychopathology.

Cortisol reactivity patterns significantly changed from decreasing to increasing reactivity from early to middle childhood. Moreover, preschool psychopathology moderated this change. Children with fewer preschool psychiatric symptoms demonstrated more stable reactivity patterns, whereas children with preschool psychiatric comorbidity demonstrated more unstable reactivity patterns across assessments. Findings suggest a developmental shift from decreasing to increasing cortisol reactivity from early to middle childhood, and highlight early preschool psychopathology as a moderator of change in cortisol reactivity.
A Model of Choice between Current Consumption and Future Economic Growth
Creators: name: Arifa, Ali
name: Gan, Christopher E.C.
name: Arifa, Ali
name: Gan, Christopher E.C.
Publisher: name: Unknown
Year: 1996
Subjects: International Development

description: This paper uses a newly proposed working definition of sustainability based upon the Rawlsian principle of justice to develop a simple aggregative model of growth. The model explores the issue of choice between current consumption and future economic growth through changes in capital stock. It is shown that sustainable growth limits the range of this choice, but does not determine it. The model used is only illustrative, but may be useful as a pointer for future research and comparison of sustainability modelling techniques.
A note on the eigenvalues for equivariant maps of the SU(2) sigma-model
Creators: name: Donninger, Roland
name: Aichelburg, Peter C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We numerically calculate the first few eigenvalues of the perturbations of self-similar solutions of the spherically symmetric co-rotational SU(2) sigma-model on Minkowski space.
Network model for higher-order topological phases
Creators: name: Liu, Hui
name: Franca, Selma
name: Moghaddam, Ali G.
name: Hassler, Fabian
name: Fulga, Ion Cosma
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We introduce a two-dimensional network model that realizes a higher-order topological phase (HOTP). We find that in the HOTP the bulk and boundaries of the system are gapped, and a total of 16 corner states are protected by the combination of a four-fold rotation, a phase-rotation, and a particle-hole symmetry. In addition, the model exhibits a strong topological phase at a point of maximal coupling. This behavior is in opposition to conventional network models, which are gapless at this point. By introducing the appropriate topological invariants, we show how a point group symmetry can protect a topological phase in a network. Our work provides the basis for the realization of HOTP in alternative experimental platforms implementing the network model.
description: 13 pages, 9 figures, published version
Die Kirche in der sozialistischen Gesellschaft
Creators: name: Pröhle, Karl
name: Pröhle, Károly
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 27 Nr. 2 (1978): Ökumenische Rundschau, Band 27, Heft 2
Strategic Alert Throttling for Intrusion Detection Systems
Creators: name: Tedesco, Gianni
name: Aickelin, Uwe
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Network intrusion detection systems are themselves becoming targets of attackers. Alert flood attacks may be used to conceal malicious activity by hiding it among a deluge of false alerts sent by the attacker. Although these types of attacks are very hard to stop completely, our aim is to present techniques that improve alert throughput and capacity to such an extent that the resources required to successfully mount the attack become prohibitive. The key idea presented is to combine a token bucket filter with a realtime correlation algorithm. The proposed algorithm throttles alert output from the IDS when an attack is detected. The attack graph used in the correlation algorithm is used to make sure that alerts crucial to forming strategies are not discarded by throttling.
Marie-Claire Blais, Lise Gauvin. Les lieux de Marie-Claire Blais
Creators: name: De Vaucher Gravili, Anne
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Compte rendu de Blais, M.-C. ; Gauvin, L. (2020). Les lieux de Marie-Claire Blais. Entretiens. Montréal : Éditions Nota Bene, 223 pp.

description: Il Tolomeo
Claudio Fogu. The Fishing Net and The Spider Web: Mediterranean Imaginaries and the Making of Italians
Creators: name: Cazzato, Luigi Carmine
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Review of Fogu, C. (2020). The Fishing Net and The Spider Web: Mediterranean Imaginaries and the Making of Italians. Cham: Palgrave Macmillan, 296 pp.

description: Il Tolomeo
Fabio Luppi. Fathers and Sons at the Abbey Theatre (1904-1938). A New Perspective on the Study of Irish Drama
Creators: name: Terrinoni, Enrico
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Recensione di Luppi, F. (2018). Fathers and Sons at the Abbey Theatre (1904-1938). A New Perspective on the Study of Irish Drama. Irvine-Boca Raton (FL): Brown Walker Press, 246 pp.

description: Il Tolomeo
Magnon-mediated Binding between Holes in an Antiferromagnet
Creators: name: Bruegger, C.
name: Kaempfer, F.
name: Pepe, M.
name: Wiese, U. -J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The long-range forces between holes in an antiferromagnet are due to magnon exchange. The one-magnon exchange potential between two holes is proportional to cos(2ϕ)/r^2 where r is the distance vector of the holes and ϕis the angle between r and an axis of the square crystal lattice. One-magnon exchange leads to bound states of holes with antiparallel spins resembling d-wave symmetry. The role of these bound states as potential candidates for the preformed Cooper pairs of high-temperature superconductivity is discussed qualitatively.
description: 4 pages, 3 figures
Carmen Concilio, Michela Fargione. Trees in Literatures and the Arts
Creators: name: Boraso, Silvia
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Review of Concilio, C.; Fargione, M. (eds) (2021). Trees in Literatures and the Arts. HumanArboreal Perspectives in the Anthropocene. Lanham: Lexington Books, 321 pp.

description: Il Tolomeo
Speech perception by older listeners : contributions of auditory temporal processes
Creators: name: Haubert, Natalie
Publisher: name: University of British Columbia
Year: 2009

description: Auditory temporal processing is believed to be critical to speech perception; however, the exact nature of the contributing temporal processes and their psychophysical limits are as of yet undetermined. Furthermore, in light of the difficulties understanding spoken language that are common in older age, the resilience of these processes to normal aging warrants further investigation. Older adults, even with normal pure-tone hearing thresholds, often experience difficulty understanding spoken language when the message is presented in noise and/or when the rate of the message is increased. To further our understanding of these complaints, measures of temporal resolution and word identification were obtained from younger and older listeners. Eight younger and eight older normal-hearing listeners identified four word-pair continuums that varied from one word to another word as the duration of an inserted silent interval varied from short to long (i.e., 'cash' to 'catch'). These word-pairs were presented at both a slower and a faster speaking rate. The listeners identified these word-pair continuums, first, in a quiet listening condition; later they identified selected tokens from each continuum in three background noise conditions. These listeners also completed a gap detection task where five gap detection thresholds were obtained for a 2- kHz tone pip with gap-defining marker durations of 0.83, 5, 10, 80 and 400 ms. The present study replicates previous findings indicating that older adults are significantly poorer than younger adults at detecting gaps embedded in non-speech stimuli (2-kHz markers) when the surrounding material is short (Schneider & Hamstra, 1999; Schneider, Pichora-Fuller, Kowalchuk, & Lamb, 1994). Correspondingly, older adults were also shown to have greater difficulty identifying speech contrasts when a gap served to differentiate between two words, particularly for fast speech and in the context of background noise. Common to both these cases is the poorer performance evidenced by older listeners in the context of fast rates/ short duration stimuli. This pattern of findings is consistent with a hypothesis that proposes that recovery from neural adaptation occurs more slowly in the older compared to the younger auditory system (Schneider & Hamstra, 1999).
Direct measurement of key exciton properties: energy, dynamics and spatial distribution of the wave function
Creators: name: Dong, Shuo
name: Puppin, Michele
name: Pincelli, Tommaso
name: Beaulieu, Samuel
name: Christiansen, Dominik
name: Hubener, Hannes
name: Nicholson, Christopher W.
name: Xian, R. Patrick
name: Dendzik, Maciej
name: Deng, Yunpei
name: Windsor, Yoav William
name: Selig, Malte
name: Malic, Ermin
name: Rubio, Angel
name: Knorr, Andreas
name: Wolf, Martin
name: Rettig, Laurenz
name: Ernstorfer, Ralph
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Excitons, Coulomb-bound electron-hole pairs, are the fundamental excitations governing the optoelectronic properties of semiconductors. While optical signatures of excitons have been studied extensively, experimental access to the excitonic wave function itself has been elusive. Using multidimensional photoemission spectroscopy, we present a momentum-, energy- and time-resolved perspective on excitons in the layered semiconductor WSe$_2$. By tuning the excitation wavelength, we determine the energy-momentum signature of bright exciton formation and its difference from conventional single-particle excited states. The multidimensional data allows to retrieve fundamental exciton properties like the binding energy and the exciton-lattice coupling and to reconstruct the real-space excitonic distribution function via Fourier transform. All quantities are in excellent agreement with microscopic calculations. Our approach provides a full characterization of the exciton properties and is applicable to bright and dark excitons in semiconducting materials, heterostructures and devices.
Mónica de Miranda. Atlantica. Contemporary Art from Angola and its Diaspora
Creators: name: Girotto, Alice
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Review of Miranda, M. de (ed.) (2018). Atlantica. Contemporary Art from Angola and its Diaspora. Lisbon: Hangar Books, 261 pp.

description: Il Tolomeo
QED Corrections in $\bar{B} \to \bar{K} \ell^+ \ell^-$ at the Double-Differential Level
Creators: name: Isidori, Gino
name: Nabeebaccus, Saad
name: Zwicky, Roman
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a detailed analysis of QED corrections to $\bar{B} \to \bar{K} \ell^+ \ell^-$ decays at the double-differential level. Cancellations of soft and collinear divergences are demonstrated analytically using the phase space slicing method. Whereas soft divergences are found to cancel at the differential level, the cancellation of the hard-collinear logs $\ln m_\ell$ require, besides photon-inclusiveness, a specific choice of kinematic variables. In particular, hard-collinear logs in the lepton-pair invariant mass distribution ($q^2$), are sizeable and need to be treated with care when comparing with experiment. Virtual and real amplitudes are evaluated using an effective mesonic Lagrangian. Crucially, we show that going beyond this approximation does not introduce any further infrared sensitive terms. All analytic computations are performed for generic charges and are therefore adaptable to semileptonic decays such as $B \to D \ell \bar ν$.
description: 47 pages, 9 figures, v2 quasi identical to JHEP version
Interactions of Jets with Inhomogeneous Cloudy Media
Creators: name: Saxton, Curtis J.
name: Bicknell, Geoffrey V.
name: Sutherland, Ralph S.
name: Midgley, Stuart
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present two-dimensional slab-jet simulations of jets in inhomogeneous media consisting of a tenuous hot medium populated with a small filling factor by warm, dense clouds. The simulations are relevant to the structure and dynamics of sources such as Gigahertz Peak Spectrum and Compact Steep Spectrum radio galaxies, High Redshift Radio Galaxies and radio galaxies in cooling flows. The jets are disrupted to a degree depending upon the filling factor of the clouds. With a small filling factor, the jet retains some forward momentum but also forms a halo or bubble around the source. At larger filling factors channels are formed in the cloud distribution through which the jet plasma flows and a hierarchical structure consisting of nested lobes and an outer enclosing bubble results. We suggest that the CSS quasar 3C48 is an example of a low filling factor jet - interstellar medium interaction whilst M87 may be an example of the higher filling factor type of interaction. Jet disruption occurs primarily as a result of Kelvin-Helmholtz instabilities driven by turbulence in the radio cocoon not through direct jet-cloud interactions, although there are some examples of these. In all radio galaxies whose morphology may be the result of jet interactions with an inhomogeneous interstellar medium we expect that the dense clouds will be optically observable as a result of radiative shocks driven by the pressure of the radio cocoon. We also expect that the radio galaxies will possess faint haloes of radio emitting material well beyond the observable jet structure.
description: 21 pages, 16 figures, submitted to MNRAS. A version with full resolution figures is available at: http://www.mssl.ucl.ac.uk/~cjs2/pdf/cloudy_hue.pdf
Margarida Calafate Ribeiro, Francisco Noa. Memória, cidade e literatura
Creators: name: Girotto, Alice
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2021

description:

Resenha de Ribeiro, M. Calafate; Noa, F. (orgs) (2019). Memória, cidade e literatura. De São Paulo de Assunção de Loanda a Luuanda, de Lourenço Marques a Maputo. Porto: Edições Afrontamento, 225 pp.

description: Il Tolomeo
Class elicitation session
Creators: name: Baclawski, Kenneth
name: Hong Man Leung, Herman
name: Lamoureux, Spencer
name: Michael, Lev
name: O'Hagan, Zachary James
name: Rolle, Nicholas Revett
name: Russell, Kamala Rose
name: Sande, Hannah Leigh
name: Skilton, Amalia Horan
name: Zapana Almanza, Hector
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2016
Subjects: Aymara language

description: Binding; -ni; embedded clauses
Generalized Proximal Methods for Pose Graph Optimization
Creators: name: Fan, Taosha
name: Murphey, Todd
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Robotics (cs.RO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper, we generalize proximal methods that were originally designed for convex optimization on normed vector space to non-convex pose graph optimization (PGO) on special Euclidean groups, and show that our proposed generalized proximal methods for PGO converge to first-order critical points. Furthermore, we propose methods that significantly accelerate the rates of convergence almost without loss of any theoretical guarantees. In addition, our proposed methods can be easily distributed and parallelized with no compromise of efficiency. The efficacy of this work is validated through implementation on simultaneous localization and mapping (SLAM) and distributed 3D sensor network localization, which indicate that our proposed methods are a lot faster than existing techniques to converge to sufficient accuracy for practical use.
description: 29 pages
Gaussian phase sensitivity of boson-sampling-inspired strategies
Creators: name: Valido, Antonio A.
name: García-Ripoll, Juan José
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study the phase sensitivity of generic linear interferometric schemes using Gaussian resources and measurements. Our formalism is based on the Fisher information. This allows us to separate the contributions of the measurement scheme, the experimental imperfections, and auxiliary systems. We demonstrate the strength of this formalism using a broad class of multimode Gaussian states that includes well-known results from single- and two-mode metrology scenarios. Using this, we prove that input coherent states or squeezing beat the non-classical states proposed in preceding boson-sampling-inspired phase-estimation schemes. We also develop a novel polychromatic interferometric protocol, demonstrating an enhanced sensitivity with respect to two-mode squeezed-vacuum states, for which the ideal homodyne detection is formally shown to be optimal.
description: 10+9 pages, 7 figures. Comments are welcome. Close to the published version
On D-Brane Boundary State Analysis in Pure-Spinor Formalism
Creators: name: Mukhopadhyay, Partha
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore a particular approach to study D-brane boundary states in Berkovits' pure spinor formalism of superstring theories. In this approach one constructs the boundary states in the relevant conformal field theory by relaxing the pure spinor constraints. This enables us to write down the open string boundary conditions for non-BPS D-branes in type II string theories, generalizing our previous work in light-cone Green-Schwarz formalism. As a first step to explore how to apply these boundary states for physical computations we prescribe rules for computing disk one point functions for the supergravity modes. We also comment on the force computation between two D-branes and point out that it is hard to make the world-sheet open-closed duality manifest in this computation.
description: 26 pages. References added, section 5 modified
A unified error analysis for the numerical solution of nonlinear wave-type equations with application to kinetic boundary conditions
Creators: name: Leibold, Jan
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: numerical analysis
nonlinear wave-type equations
nonlinear monotone operators
abstract error analysis
a priori error estimates
nonconforming space discretization
full discretization
implicit-explicit time integration
IMEX scheme
acoustic boundary conditions
dynamic boundary conditions

description: In this thesis, a unified error analysis for discretizations of nonlinear first- and second-order wave-type equations is provided. For this, the wave equations as well as their space discretizations are considered as nonlinear evolution equations in Hilbert spaces. The space discretizations are supplemented with Runge-Kutta time discretizations. By employing stability properties of monotone operators, abstract error bounds for the space, time, and full discretizations are derived. Further, for semilinear second-order wave-type equations, an implicit-explicit time integration scheme is presented. This scheme only requires the solution of a linear system of equations in each time step and it is stable under a step size restriction only depending on the nonlinearity. It is proven that the scheme converges with second order in time and in combination with the abstract space discretization of the unified error analysis, corresponding full discretization error bounds are derived. The abstract results are used to derive convergence rates for an isoparametric finite element space discretization of a wave equation with kinetic boundary conditions and nonlinear forcing and damping terms. For the combination of the finite element discretization with Runge-Kutta methods or the implicit-explicit scheme, respectively, error bounds of the resulting fully discrete schemes are proven. The theoretical results are illustrated by numerical experiments.
Where is the lightest charmed scalar meson?
Creators: name: Du, Meng-Lin
name: Guo, Feng-Kun
name: Hanhart, Christoph
name: Kubis, Bastian
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The lightest charmed scalar meson is known as the $D_0^*(2300)$, which is one of the earliest new hadron resonances observed at modern $B$ factories. We show here that the parameters assigned to the lightest scalar $D$-meson are in conflict with the precise LHCb data of the decay $B^-\to D^+ π^- π^-$. On the contrary, these data can be well described by an unitarized chiral amplitude containing a much lighter charmed scalar meson, the $D_0^*(2100)$. We also extract the low-energy $S$-wave $Dπ$ phase of the decay $B^-\to D^+ π^- π^-$ from the data in a model-independent way, and show that its difference from the $Dπ$ scattering phase shift can be traced back to an intermediate $ρ^-$ exchange. Our work highlights that an analysis of data consistent with chiral symmetry, unitarity, and analyticity is mandatory in order to extract the properties of the ground-state scalar mesons in the singly heavy sector correctly, in analogy to the light scalar mesons $f_0(500)$ and $K_0^*(700)$.
description: Note: Title slightly changed, version to appear in Phys. Rev. Lett.; 9 pages, 5 figures