cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational radiation from inspiralling compact binaries completed at the third post-Newtonian order
Creators: name: Blanchet, Luc
name: Damour, Thibault
name: Esposito-Farese, Gilles
name: Iyer, Bala R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The gravitational radiation from point particle binaries is computed at the third post-Newtonian (3PN) approximation of general relativity. Three previously introduced ambiguity parameters, coming from the Hadamard self-field regularization of the 3PN source-type mass quadrupole moment, are consistently determined by means of dimensional regularization, and proved to have the values xi = -9871/9240, kappa = 0 and zeta = -7/33. These results complete the derivation of the general relativistic prediction for compact binary inspiral up to 3.5PN order, and should be of use for searching and deciphering the signals in the current network of gravitational wave detectors.
description: 4 pages in 2-column format, LaTeX 2e, REVTeX 4, no figure
Secondary school students conceptions, factors behind achievement, and problem solving strategies with stochastic problems
Creators: name: Sharkey, Charlene K.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy

description: The purpose of this study was to investigate the conceptions secondary school students have when dealing with stochastic questions and the heuristics these students use to solve stochastic questions. The second purpose of this study was to determine if there were any effects of gender, grade level, mathematical placement, reading ability and prior stochastic experience on the students' stochastic achievement. The students' stochastic achievement was based on the percentage correct on a multiple-choice stochastic test and the students' conceptions and the heuristics they used were based on the answers students gave on a stochastic reasoning test. The analysis sample for the study consisted of 392 secondary school mathematics students in the Toms River, New Jersey, school district who took the multiple-choice stochastic test. Eighteen of the 392 students volunteered to take the reasoning test, where six students were from each group of students who scored in the top third, middle third and bottom third of the multiple-choice test. Statistical methods were used to test if there were any effects of the variables mentioned earlier on students' stochastic achievement, and whether there was a difference in the proportion of correctly answered questions on the multiple-choice test between probability and statistics questions. The results indicated that, at the 0.05 significance level, reading ability, grade level (Grade 9), the interaction between gender and mathematical placement (track 3), and the interaction between reading ability and stochastic experience had a significant effect on students' stochastic achievement. In addition, there was a significant difference in the proportion of correct answers between probability and statistics questions. Another question that was investigated in this study was if secondary school students use heuristics to solve stochastic questions. This question was qualitatively researched. From the results of the reasoning test, it was concluded that secondary school students use the following heuristics to solve stochastic problems: Belief Strategy, Equiprobable Bias, Bigger is Better, Prior Experience and Normative Reasoning. Belief strategy was used more often than the other heuristics. Also, it was determined that students do not always use the same heuristics to solve similar types of problems.
Anomalous Spin Dephasing in (110) GaAs Quantum Wells: Anisotropy and Intersubband Effects
Creators: name: Doehrmann, S.
name: Haegele, D.
name: Rudolph, J.
name: Schuh, D.
name: Bichler, M.
name: Oestreich, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A strong anisotropy of electron spin decoherence is observed in GaAs/(AlGa)As quantum wells grown on (110) oriented substrate. The spin lifetime of spins perpendicular to the growth direction is about one order of magnitude shorter compared to spins along (110). The spin lifetimes of both spin orientations decrease monotonically above a temperature of 80 and 120 K, respectively. The decrease is very surprising for spins along (110) direction and cannot be explained by the usual Dyakonov Perel dephasing mechanism. A novel spin dephasing mechanism is put forward that is based on scattering of electrons between different quantum well subbands.
description: 4 pages, 3 postscript figures, corrected typos
Classification of knotted tori in the 2-metastable dimension
Creators: name: Cencelj, M.
name: Repovš, D.
name: Skopenkov, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57Q35, 57Q45 (Primary) 55S37, 57Q60 (Secondary)

description: This paper is on the classical Knotting Problem: for a given manifold N and a number m describe the set of isotopy classes of embeddings $N\to S^m$. We study the specific case of knotted tori, i. e. the embeddings $S^p \times S^q \to S^m$. The classification of knotted tori up to isotopy in the metastable dimension range $m>p+\frac{3}{2}q+2$, $p\le q$, was given by A. Haefliger, E. Zeeman and A. Skopenkov. We consider the dimensions below the metastable range, and give an explicit criterion for the finiteness of this set of isotopy classes in the 2-metastable dimension:
 Theorem. Assume that $p+\frac{4}{3}q+22p+q+2$. Then the set of smooth embeddings $S^p \times S^q \to S^m$ up to isotopy is infinite if and only if either $q+1$ or $p+q+1$ is divisible by 4.
 Our approach to the classification is based on an analogue of the Koschorke exact sequence from the theory of link maps. This sequence involves a new $β$-invariant of knotted tori. The exactness is proved using embedded surgery and the Habegger-Kaiser techniques of studying the complement.
description: in English and in Russian, 24 pages, 10 figures. Minor corrections: in particular, in notation (c) before Theorem 2.1 and in Definiton of the beta-invariant
title: Shallow volcanic processes at persistently active volcanoes: multidisciplinary study at Poás volcano, Costa Rica
Creators: name: Fournier, Nicolas
Publisher: name: The Open University
Year: 2004

description: There is a discrepancy between the amount of gas emitted and the quantity of magma erupted at many persistently active volcanoes. The gas output suggests a larger magma supply than is observed to erupt. This is a major issue in contemporary volcanology but as yet it is poorly understood.

Calculations based on the micro-gravity data collected during the 1986-89 degassing crisis at Poas volcano, Costa Rica, and a new sulphur budget analysis suggest that approximately 28 x 109kg of magma was intruded beneath the Poas summit crater during this period, but much of the magma (at least 16 x 109kg) was recycled to depth. A new high-resolution Bouguer survey in the active crater also shows that a significant amount of magma has been intruded into the subsurface at Poas - probably during the last century (20% of it during the 1986-89 crisis) despite almost no magma being erupted in this period. This implies that the magma intruded had already degassed, otherwise major near surface exsolution of volatiles and eruptions would have followed intrusion. The magma reservoir at Poas must therefore be shallow enough in the edifice to allow volatile exsolution and segregation from the magma, and wide enough to allow magma convection. The stocky shape of the shallow intrusions at Poas and the apparent lack of ground deformation during their emplacement (both determined by geophysical studies) indicate that magma migrates mainly by assimilation of the surrounding material.

Hydrothermal systems seem to have a major role in controlling both the development of magma reservoirs high in the volcanic edifice and the subsurface intrusion of magma, facilitating assimilation by intruding magmas. Thus hydrothermal systems may have a much greater role in controlling the type of activity and the long-term evolution of stratovolcanoes than previously suggested.
Molecular alignment echoes probe collision-induced rotational-speed changes
Creators: name: Hartmann, J. -M.
name: Ma, J.
name: Delahaye, T.
name: Billard, F.
name: Hertz, E.
name: Wu, J.
name: Lavorel, B.
name: Boulet, C.
name: Faucher, O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the decays with pressure of the alignment echoes induced in N2O-He gas mixtures by two laser pulses with various delays bring detailed information on collision-induced changes of the rotational speed. Measurements and calculations demonstrate that collisions reduce the echo amplitude all the more efficiently when the echo appears late. We quantitatively explain this behavior by the filamentation of the classical rotational phase space induced by the first pulse and the progressive narrowing of the filaments with time. The variation of the echo decay thus reflects the ability of collisions to change the molecules' rotational speed by various amounts, enabling refined tests of models for the dissipation induced by intermolecular forces.
Additional file 1 of Clustering of chronic hepatitis B screening intentions in social networks of Moroccan immigrants in the Netherlands
Creators: name: Hamdiui, Nora
name: Buskens, Vincent
name: Steenbergen, Jim E. Van
name: Kretzschmar, Mirjam E. E.
name: Rocha, Luis E. C.
name: Thorson, Anna E.
name: Timen, Aura
name: Wong, Albert
name: Muijsenbergh, Maria Van Den
name: Stein, Mart L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1: Table 2. Logistic regression analyses of having the same screening intention (‘Intention request’) in relation to having a tie.
Curarsi a gravità zero
Creators: Gloria Nobile
Publisher: name: Media Inaf
Year: 2021

Produzione di cellule staminali, sviluppo di modelli avanzati di malattie ed espansione delle capacità di stampa 3D sono le tre applicazioni prese in esame dagli scienziati del Cedars-Sinai Medical Center, che intendono sfruttare lo spazio per far progredire la medicina e la comprensione degli effetti della microgravità, potenzialmente in grado di facilitare la produzione di cellule staminali
Three-point Functions in $\mathcal{N}=4$ SYM at Finite $N_c$ and Background Independence
Creators: name: Suzuki, Ryo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We compute non-extremal three-point functions of scalar operators in $\mathcal{N}=4$ super Yang-Mills at tree-level in $g_{YM}$ and at finite $N_c$, using the operator basis of the restricted Schur characters. We make use of the diagrammatic methods called quiver calculus to simplify the three-point functions. The results involve an invariant product of the generalized Racah-Wigner tensors ($6j$ symbols). Assuming that the invariant product is written by the Littlewood-Richardson coefficients, we show that the non-extremal three-point functions satisfy the large $N_c$ background independence; correspondence between the string excitations on $AdS_5 \times S^5$ and those in the LLM geometry.
description: 55 pages, v2, v3: typo corrected. To appear in JHEP
A comment on the Invariance of the Speed of Light
Creators: name: Behera, Harihar
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The invariance of the speed of light in all inertial frames is shown to be an inevitable consequence of the relativity principle of special relativity contrary to the view held by Hsu and Hsu in taiji relativity where the speed of light is no longer a universal constant. The present approach is not only new but also much simpler than the existing approaches.
description: 6 pages,the main idea behind the paper is previously reflcted in an article published in Bulletin of Orissa Physical Society, Vol.X (2002) 153 which has got some printing errors
Additional file 1 of A multi-centre, parallel-group, randomised controlled trial to assess the efficacy and safety of eurythmy therapy and tai chi in comparison with standard care in chronically ill elderly patients with increased risk of falling (ENTAiER): a trial protocol
Creators: name: Kienle, G. S.
name: P. G. Werthmann
name: B. Grotejohann
name: K. Kaier
name: I. Steinbrenner
name: S. Voigt-Radloff
name: R. Huber
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplementary file 1. Self designed questionnaire Initial English_ENTAiER: Initial Questions.
The Influence of Canalization on the Robustness of Boolean Networks
Creators: name: Kadelka, Claus
name: Kuipers, Jack
name: Laubenbacher, Reinhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: Biological Physics (physics.bio-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Time- and state-discrete dynamical systems are frequently used to model molecular networks. This paper provides a collection of mathematical and computational tools for the study of robustness in Boolean network models. The focus is on networks governed by $k$-canalizing functions, a recently introduced class of Boolean functions that contains the well-studied class of nested canalizing functions. The activities and sensitivity of a function quantify the impact of input changes on the function output. This paper generalizes the latter concept to $c$-sensitivity and provides formulas for the activities and $c$-sensitivity of general $k$-canalizing functions as well as canalizing functions with more precisely defined structure. A popular measure for the robustness of a network, the Derrida value, can be expressed as a weighted sum of the $c$-sensitivities of the governing canalizing functions, and can also be calculated for a stochastic extension of Boolean networks. These findings provide a computationally efficient way to obtain Derrida values of Boolean networks, deterministic or stochastic, that does not involve simulation.
description: 16 pages, 2 figures, 3 tables
Exact Solutions with Noncommutative Symmetries in Einstein and Gauge Gravity
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present new classes of exact solutions with noncommutative symmetries constructed in vacuum Einstein gravity (in general, with nonzero cosmological constant), five dimensional (5D) gravity and (anti) de Sitter gauge gravity. Such solutions are generated by anholonomic frame transforms and parametrized by generic off-diagonal metrics. For certain particular cases, the new classes of metrics have explicit limits with Killing symmetries but, in general, they may be characterized by certain anholonomic noncommutative matrix geometries. We argue that different classes of noncommutative symmetries can be induced by exact solutions of the field equations in 'commutative' gravity modeled by a corresponding moving real and complex frame geometry. We analyze two classes of black ellipsoid solutions (in the vacuum case and with cosmological constant) in 4D gravity and construct the analytic extensions of metrics for certain classes of associated frames with complex valued coefficients. The third class of solutions describes 5D wormholes which can be extended to complex metrics in complex gravity models defined by noncommutative geometric structures. The anholonomic noncommutative symmetries of such objects are analyzed. We also present a descriptive account how the Einstein gravity can be related to gauge models of gravity and their noncommutative extensions and discuss such constructions in relation to the Seiberg-Witten map for the gauge gravity. Finally, we consider a formalism of vielbeins deformations subjected to noncommutative symmetries in order to generate solutions for noncommutative gravity models with Moyal (star) product.
description: latex2e, 53 pages, the variant to be published in J. Math. Phys
The Internal Polya Inequality for $\mathbb{C}$-convex Domains in $\mathbb{C}^n$
Creators: name: Günyüz, Ozan
name: Zakharyuta, Vyacheslav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Let $K\subset \mathbb{C}$ be a polynomially convex compact set, $f$ be a function analytic in a domain $\overline{\mathbb{C}}\smallsetminus K$ with Taylor expansion $f\left( z\right) =\sum_{k=0}^{\infty }\frac{a_{k}}{z^{k+1}} $ at $\infty $, and $H_{s}\left( f\right) :=\det \left( a_{k+l}\right) _{k,l=0}^{s}$ related Hankel determinants. The classical Polya theorem \cite% {P} says that \[ \limsup_{s\rightarrow \infty }\left\vert H_{s}\left( f\right) \right\vert ^{1/s^{2}}\leq d\left( K\right) , \]% where $d\left( K\right) $ is the transfinite diameter of $K$. The main result of this paper is multivariate internal analogs of Polya's inequality for $\mathbb{C}$-convex (=strictly linearly convex) domains $D\subset \mathbb{C}^{n}$ and weighted Hankel-type determinants, constructed from the Taylor coefficients of a function $f\in A\left( D\right) $ at a given point $% a\in D$; therewith the weights are generated by $s$-indicatrices of the sequence of analytic functionals biorthogonal to the system of monomials in $% \mathbb{C}^{n}$. It is proved by the reduction to the outer multivariate analog of Polya's inequality (Zakharyuta, Math. USSR Sbornik, \textbf{25 }% (1975)) and is based on the characterization of the strict linear convexity in terms of $s$-indicatrices (S. Znamenskii, Siberian Math. J. \textbf{26 } (1985)).
Capital Constraints and European Migration to Canada: Evidence from the 1920s Passenger Lists
Creators: name: Armstrong, Alexander
name: Lewis, Frank
name: Armstrong, Alexander
name: Lewis, Frank
Publisher: name: Unknown
Year: 2009
Subjects: Financial Economics
International Development

description: The difficulty or inability to borrow made capital market constraints an important part of the decision of potential emigrants to move from Europe to North America. We formalize the constraint with a life-cycle model, where agents jointly choose the optimal period of saving to finance migration and whether to migrate. Simulations of the model point to the potential role of preferences, the period of adjustment after arrival, and the direct migration costs in determining who will migrate and at what age; and they help account for the large wage gaps between the Old and New World. Our analysis of data from the passenger manifests of Dutch arrivals at Canadian ports from 1925 to 1927, that importantly include the saving of these immigrants, points to the promise of this approach to international migration.
Raman velocity filter as a tool for collinear laser spectroscopy
Creators: name: Neumann, Antje
name: Nörtershäuser, Wilfried
name: Walser, Reinhold
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The velocity distribution of a hot ionic beam can be filtered with a narrow stimulated Raman process to prepare a colder subensemble, as substantiated in this theoretical analysis. Using two counter-propagating, far-detuned lasers, we can define a $π$-pulse for the resonant velocity to transfer atoms within the linewidth of the Raman resonance between the ground-states of a $Λ$-system. Spontaneous emission from the two single-photon resonances, as well as the ground-state decoherence induced by laser noise, diminishes the efficiency of the filter. From a comprehensive master equation, we obtain conditions for the optimal frequency pair of the lasers and evaluate the filter performance numerically, as well as analytically. If we apply this analysis to current $^{40}$Ca$^+$ ion experiments, we obtain a sensitivity for measuring high ion acceleration voltages on the ppm level or below.
description: Corrected typos. Corrected: Missing minus in Eq. 35. Improved readability by including a few repetitions of quantity definitions and improved display of relevant quantities in Table II of the Appendix
Property Rights, Standards of Living, and Economic Growth: Western Canadian Cree
Creators: name: Carlos, Ann
name: Lewis, Frank
name: Carlos, Ann
name: Lewis, Frank
Publisher: name: Unknown
Year: 2010
Subjects: Financial Economics
Food Security and Poverty
International Development

description: The Great Divergence in standards of living for populations around the world occurred in the late 18th century. Prior to that date evidence suggests that real wages of most Europeans, many living in China and India were similar. Some a little higher and some a little lower but with a low dispersion. By the middle of the 19th century, a divergence had occurred with western Europe pulling away from other groups. Little is known about the standards of living of the aboriginal peoples of North America many of whom were primarily hunter/gatherer’s at the end of the 18th century. Based on comparisons of expenditure, we show that the standard of living of aboriginal people in 1740 was similar to that of wage workers in London. However, within the next century, there would be a great divergence. This paper explores the ways in which huntergatherer lifeways and the concomitant property rights structures reduced the likelihood that native economy could experience modern rates of economic growth. Native society and property rights structures which provided a relatively high standard of living in the mid eighteenth century and for part of the nineteenth was unable to provide avenues for further development.
Testati i limiti di velocità dei computer quantistici
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Due noti limiti di velocità per i computer quantistici sono il limite di Mandelstam-Tamm e quello di Margolus-Levitin, che mettono in relazione la velocità massima di evoluzione di uno stato con l'incertezza energetica del sistema e l'energia media. Un gruppo internazionale di fisici è ora riuscito, per la prima volta, a verificare contemporaneamente entrambi
Measuring the Slowly Evolving Trend in US Inflation with Professional Forecasts
Creators: name: Nason, Jason M.
name: Smith, Gregor W.
name: Nason, Jason M.
name: Smith, Gregor W.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Financial Economics
subject: International Development
subject: US inflation
subject: professional forecasts
subject: sticky information
subject: Beveridge-Nelson

description: Much research studies US inflation history with a trend-cycle model with unobserved components. A key feature of this model is that the trend may be viewed as the Fed’s evolving inflation target or long-horizon expected inflation. We provide a new way to measure the slowly evolving trend and the cycle (or inflation gap), based on forecasts from the Survey of Professional Forecasters. These forecasts may be treated either as rational expectations or as adjusting to those with sticky information. We find considerable evidence of inflation-gap persistence and some evidence of implicit sticky information. But statistical tests show we cannot reconcile these two widely used perspectives on US inflation and professional forecasts, the unobserved-components model and the sticky-information model.
title: WAVS - the Wide Area Varability Survey
Creators: name: Lott, David Andrew
Publisher: name: The Open University
Year: 2004

description: The Wide Area Variability Survey (WAVS) project used the CFH12k mosaic camera as the world's largest time series photometer to obtain images of a 0.33 square degree galactic field with a time resolution of 3 minutes over 2 nights of observations. The main aim of the WAYS project was to try and differentiate between the current competing models of cataclysmic variable (CV) population and evolution by obtaining an unbiased sample using a characteristic that all known CVs exhibit. All CVs show 'flickering' in their lightcurves, that is stochastic variations in luminosity with an amplitude of tenths of a magnitude on timescales of minutes to hours, and it is this characteristic that the WAYS project exploits. Lightcurves for each of the 52000 objects in the WAYS field were created and searched for variability. Spectroscopic observations using the Nordic Optical Telescope (NOT) were carried out to further investigate candidate objects.
In searching for variability on this timescale it was apparent that the WAYS project would also discover many variables of other types which may also be of great interest. Thus, the secondary goal of the WAYS project was to investigate these objects and obtain population statistics wherever possible.
 This thesis gives an introduction to various types of stellar variability and covers the observable characteristics of CV s in some depth. Competing models of CV evolution are considered and the goals and strategies of the WAYS programme are outlined in more detail. An account of the process of obtaining high quality photometry and spectroscopy is given, both in the general case and in the more specific case applicable to the WAYS data and the methods used to search for variability in the WAYS sample are discussed.
 The WAYS project has currently discovered 229 new variable objects and the lightcurves of these systems are presented in Appendices A to C. Some of these objects are discussed in detail, but for others accurate classification is difficult without more data, although a tentative classification is made.
 Currently the WAYS project has not discovered any new CVs and the relevance of this null result is considered. However, 30 possible flickering objects have been identified.
Ultrahigh Energy Cosmic Rays from Gamma Ray Bursts: Implications of the Recent Observational Results by Milagro
Creators: name: Gupta, Nayantara
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been speculated earlier that Gamma Ray Bursts are sources of ultrahigh energy cosmic rays. Recently, the search for high energy photons from Gamma Ray Bursts by Milagro group has put limits on the isotropic luminosity of these transient sources in very high energy photons. The implications of the results obtained by Milagro to our understanding of the ultrahigh energy cosmic ray spectrum from these sources have been discussed in the present work.
description: 13 pages, 1 figure
A new algorithm for computing branching rules and Clebsch-Gordan coefficients of unitary representations of compact groups
Creators: name: Ibort, Alberto
name: López-Yela, Alberto
name: Moro, Julio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81

description: A numerical algorithm that computes the decomposition of any finite-dimen\-sio\-nal unitary reducible representation of a compact Lie group is presented. The algorithm, which does not rely on an algebraic insight on the group structure, is inspired by quantum mechanical notions. After generating two adapted states (these objects will be conveniently defined in {\bf Def.\,II.1}) and after appropriate algebraic manipulations, the algorithm returns the block matrix structure of the representation in terms of its irreducible components. It also provides an adapted orthonormal basis. The algorithm can be used to compute the Clebsch--Gordan coefficients of the tensor product of irreducible representations of a given compact Lie group. The performance of the algorithm is tested on various examples: the decomposition of the regular representation of two finite groups and the computation of Clebsch--Gordan coefficients of two examples of tensor products of representations of $SU(2)$.
description: Updated paper. arXiv admin note: text overlap with arXiv:1512.08248
Terra e Marte, pianeti fatti in casa
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2021

I pianeti rocciosi si sono formati da materiale che in gran parte ha avuto origine nel Sistema solare interno. Lo mostrano i risultati del più completo confronto mai condotto fra le abbondanze isotopiche della Terra, di Marte e meteoriti carbonacee e non carbonacee, pubblicati la settimana scorsa su Science Advances
Don’t Look Up
Creators: Davide Coero Borga
Publisher: name: Media Inaf
Year: 2021

Mentre sulle tavole imbandite si consumano pasti luculliani, fra tamponi e lenticchie, il nuovo film di Adam McKay porta la sciagura definitiva sul piccolo schermo della Smart Tv. Un trionfo di celebrità e fantascienza per il ritratto impietoso di un’umanità che rischia di disimparare ciò che l’ha resa tanto popolare sulla Terra: salvarsi la pelle a tutti i costi
A spasso con Webb
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2021

Mentre scriviamo queste note, Jwst si trova a circa 365mila km dalla Terra – più o meno la distanza che ci separa dalla Luna – e i primi fra i 344 passaggi critici che dovranno essere completati durante la fase iniziale della missione sono stati superati con successo. In particolare, sono stati aperti il pannello solare e il modulo con l’antenna a banda larga
Minimum Average Deviance Estimation for Sufficient Dimension Reduction
Creators: name: Adragni, Kofi P.
name: Raim, Andrew M.
name: Al-Najjar, Elias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Sufficient dimension reduction reduces the dimensionality of data while preserving relevant regression information. In this article, we develop Minimum Average Deviance Estimation (MADE) methodology for sufficient dimension reduction. It extends the Minimum Average Variance Estimation (MAVE) approach of Xia et al. (2002) from continuous responses to exponential family distributions to include Binomial and Poisson responses. Local likelihood regression is used to learn the form of the regression function from the data. The main parameter of interest is a dimension reduction subspace which projects the covariates to a lower dimension while preserving their relationship with the outcome. To estimate this parameter within its natural space, we consider an iterative algorithm where one step utilizes a Stiefel manifold optimizer. We empirically evaluate the performance of three prediction methods, two that are intrinsic to local likelihood estimation and one that is based on the Nadaraya-Watson estimator. Initial results show that, as expected, MADE can outperform MAVE when there is a departure from the assumption of additive errors.
Landscape-induced spatial oscillations in population dynamics
Creators: name: Dornelas, Vivian
name: Colombo, Eduardo H.
name: López, Cristóbal
name: Hernández-García, Emilio
name: Anteneodo, Celia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study the effect that disturbances in the ecological landscape exert on the spatial distribution of a population that evolves according to the nonlocal FKPP equation. Using both numerical and analytical techniques, we explore the three types of stationary profiles that can develop near abrupt spatial variations in the environmental conditions vital for population growth: sustained oscillations, decaying oscillations and exponential relaxation towards a flat profile. We relate the wavelength and decay length of the wrinkles to the shape of the interaction kernel. Since these spatial structures encode details about the interaction among individuals, we discuss how heterogeneities reveal information that would be hidden in a flat landscape.
An Extension of Generalized Linear Models to Finite Mixture Outcome Distributions
Creators: name: Raim, Andrew M.
name: Neerchal, Nagaraj K.
name: Morel, Jorge G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Finite mixture distributions arise in sampling a heterogeneous population. Data drawn from such a population will exhibit extra variability relative to any single subpopulation. Statistical models based on finite mixtures can assist in the analysis of categorical and count outcomes when standard generalized linear models (GLMs) cannot adequately account for variability observed in the data. We propose an extension of GLM where the response is assumed to follow a finite mixture distribution, while the regression of interest is linked to the mixture's mean. This approach may be preferred over a finite mixture of regressions when the population mean is the quantity of interest; here, only a single regression function must be specified and interpreted in the analysis. A technical challenge is that the mean of a finite mixture is a composite parameter which does not appear explicitly in the density. The proposed model is completely likelihood-based and maintains the link to the regression through a certain random effects structure. We consider typical GLM cases where means are either real-valued, constrained to be positive, or constrained to be on the unit interval. The resulting model is applied to two example datasets through a Bayesian analysis: one with success/failure outcomes and one with count outcomes. Supporting the extra variation is seen to improve residual plots and to appropriately widen prediction intervals.
Effect of different choices of the Boltzmannized flux operator on thermal exchange and recombination reactions
Creators: name: Saito, Koichi
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The rate constants for recombination and exchange reactions are calculated using the flux correlation approach with a general form of the Boltzmannized flux operator, which can simultaneously describe the Kubo and traditional half-split forms. First, we consider an exactly solvable model, i.e., the free particle case, in terms of a new scaling function. Next, as a non-trivial case, we study the recombination and exchange reactions at very high pressure. Since the rate constant is calculated by Laplace transform of the flux correlation function, the result depends on how the Boltzmannized flux operator is chosen. We find that a choice of the flux operator affects the rate constant considerably. For the recombination reaction, the ratio of the rate constant in the half-split form to that in the Kubo form approaches zero in the high pressure limit.
description: 16 pages, including 8 figures
Central Bank Screening, Moral Hazard, and the Lender of Last Resort Policy
Creators: name: Li, Mei
name: Milne, Frank
name: Qiu, Junfeng
name: Li, Mei
name: Milne, Frank
name: Qiu, Junfeng
Publisher: name: Unknown
Year: 2013
Subjects: subject: Financial Economics
subject: Central Banking Screening
subject: Moral Hazard
subject: Lender of Last Resort

description: This paper establishes a theoretical model to examine the LOLR policy when a central bank cannot distinguish between solvent and insolvent banks. We study two cases: a case where the central bank cannot screen insolvent banks and a case where the central bank can only imperfectly screen insolvent banks. The major results that our model produces are as follows: (1) It is impossible for any separating equilibrium to exist because insolvent banks always have an incentive to mimic solvent banks to gamble for resurrection. (2) The pooling equilibria in which, on one hand, all the banks borrow from the central bank and, on the other hand, all the banks do not borrow from the central bank, could exist given certain market beliefs off the equilibrium path. However, neither of the equilibria is socially efficient because insolvent banks will continue to hold their unproductive assets, rather than efficiently liquidating them. (3) When the central bank can screen banks imperfectly, the pooling equilibrium where all the banks borrow from the central bank becomes more likely, and the pooling equilibrium where all the banks do not borrow from the central bank becomes less likely. (4) Higher precision in central bank screening will improve social welfare not only by identifying insolvent banks and forcing them to efficiently liquidate their assets, but also by reducing moral hazard and deterring banks from choosing risky assets in the first place. (5) If a central bank can commit to a specific precision level before the banks choose their assets, rather than conducting a discretionary LOLR policy, it will choose a higher precision level to reduce moral hazard and will attain higher social welfare.
Matching small $β$ functions using centroid jitter and two beam position monitors
Creators: name: Lindstrøm, C. A.
name: D'Arcy, R.
name: Garland, M. J.
name: Gonzalez, P.
name: Schmidt, B.
name: Schröder, S.
name: Wesch, S.
name: Osterhoff, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Matching to small beta functions is required to preserve emittance in plasma accelerators. The plasma wake provides strong focusing fields, which typically require beta functions on the mm-scale, comparable to those found in the final focusing of a linear collider. Such beams can be time consuming to experimentally produce and diagnose. We present a simple, fast, and noninvasive method to measure Twiss parameters in a linac using two beam position monitors only, relying on the similarity of the beam phase space and the jitter phase space. By benchmarking against conventional quadrupole scans, the viability of this technique was experimentally demonstrated at the FLASHForward plasma-accelerator facility.
description: 8 pages, 7 figures
On special subgroups of fundamental group
Creators: name: Shirazi, Fatemah Ayatollah Zadeh
name: Ebrahimifar, Fatemeh
name: Mahmoodi, Mohammad Ali
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55Q05

description: Suppose $α$ is a nonzero cardinal number, $\mathcal I$ is an ideal on arc connected topological space $X$, and ${\mathfrak P}_{\mathcal I}^α(X)$ is the subgroup of $π_1(X)$ (the first fundamental group of $X$) generated by homotopy classes of $α\frac{\mathcal I}{}$loops. The main aim of this text is to study ${\mathfrak P}_{\mathcal I}^α(X)$s and compare them. Most interest is in $α\in\{ω,c\}$ and $\mathcal I\in\{\mathcal P_{fin}(X),\{\varnothing\}\}$, where $\mathcal P_{fin}(X)$ denotes the collection of all finite subsets of $X$. We denote ${\mathfrak P}_{\{\varnothing\}}^α(X)$ with ${\mathfrak P}^α(X)$. We prove the following statements:
 $\bullet$ for arc connected topological spaces $X$ and $Y$ if ${\mathfrak P}^α(X)$ is isomorphic to ${\mathfrak P}^α(Y)$ for all infinite cardinal number $α$, then $π_1(X)$ is isomorphic to $π_1(Y)$;
 $\bullet$ there are arc connected topological spaces $X$ and $Y$ such that $π_1(X)$ is isomorphic to $π_1(Y)$ but ${\mathfrak P}^ω(X)$ is not isomorphic to ${\mathfrak P}^ω(Y)$;
 $\bullet$ for arc connected topological space $X$ we have ${\mathfrak P}^ω(X)\subseteq{\mathfrak P}^c(X) \subseteqπ_1(X)$;
 $\bullet$ for Hawaiian earring $\mathcal X$, the sets ${\mathfrak P}^ω({\mathcal X})$, ${\mathfrak P}^c({\mathcal X})$, and $π_1({\mathcal X})$ are pairwise distinct.
 So ${\mathfrak P}^α(X)$s and ${\mathfrak P}_{\mathcal I}^α(X)$s will help us to classify the class of all arc connected topological spaces with isomorphic fundamental groups.
description: 29 pages
Survey research in Palestine: Politics and academia
Creators: name: Zacharia Hawatmeh, Christina Elizabeth
Publisher: name: American University
Year: 2023

description: This dissertation seeks to put in sociological perspective the recent introduction and usefulness of public opinion polling in Palestine. In tracing attempts, over several decades, by the Palestinians to make themselves heard and understood and to gain international recognition, the study recognizes both the polls' significance as an extension of that cause and their potential in building state institutions and strengthening national development. When measured against arguments that the surveys are a political by-product of the faulty 1993 Oslo accord, however, it becomes evident that the issue warrants a closer look by any serious study on the Palestinians. The dissertation analyzes the debates surrounding the question of foreign funding for Palestinian NGOs, especially those that conduct the polls. At the center of this debate is the contention that western support, financial and otherwise, for Palestinian research centers actually aims at weakening the grassroots organizations that had served and kept together the West Bank and Gaza Strip populations during the most difficult periods of the occupation. In particular this study examines the legitimacy of the polls within the larger context of their credibility and potential in serving the real needs of Palestinian society. To this end, the methodology used in conducting them and the issue of the representativeness of opinions surveyed are discussed. The analysis places emphasis on the effects of Palestinian culture, on the process itself and its results, especially in a political atmosphere that has been de-developed and charged with tension, insecurity and continued conflict. This study further argues that in the absence of a census of all Palestinians, including those still living in exile, no sample can be truly representative of what the entire population of Palestinians thinks. In trying to bridge the legitimacy gap in the practice of public opinion polling in Palestine, this dissertation offers recommendations to organizations entering into the field of survey research, which if not capable of contributing to their development as an integral and dynamic part of Palestinian society, will at least form a basis for further relevant research.
Spin glass models with ferromagnetically biased couplings on the Bethe lattice: analytic solutions and numerical simulations
Creators: name: Castellani, Tommaso
name: Krzakala, Florent
name: Ricci-Tersenghi, Federico
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive the zero-temperature phase diagram of spin glass models with a generic fraction of ferromagnetic interactions on the Bethe lattice. We use the cavity method at the level of one-step replica symmetry breaking (1RSB) and we find three phases: A replica-symmetric (RS) ferromagnetic one, a magnetized spin glass one (the so-called mixed phase), and an unmagnetized spin glass one. We are able to give analytic expressions for the critical point where the RS phase becomes unstable with respect to 1RSB solutions: we also clarify the mechanism inducing such a phase transition. Finally we compare our analytical results with the outcomes of a numerical algorithm especially designed for finding ground states in an efficient way, stressing weak points in the use of such numerical tools for discovering RSB effects. Some of the analytical results are given for generic connectivity.
description: 22 pages, 10 figures
Survey research in Palestine: Politics and academia
Creators: name: Zacharia Hawatmeh, Christina Elizabeth
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4410
subject: Sociology
subject: FOS: Sociology

description: This dissertation seeks to put in sociological perspective the recent introduction and usefulness of public opinion polling in Palestine. In tracing attempts, over several decades, by the Palestinians to make themselves heard and understood and to gain international recognition, the study recognizes both the polls' significance as an extension of that cause and their potential in building state institutions and strengthening national development. When measured against arguments that the surveys are a political by-product of the faulty 1993 Oslo accord, however, it becomes evident that the issue warrants a closer look by any serious study on the Palestinians. The dissertation analyzes the debates surrounding the question of foreign funding for Palestinian NGOs, especially those that conduct the polls. At the center of this debate is the contention that western support, financial and otherwise, for Palestinian research centers actually aims at weakening the grassroots organizations that had served and kept together the West Bank and Gaza Strip populations during the most difficult periods of the occupation. In particular this study examines the legitimacy of the polls within the larger context of their credibility and potential in serving the real needs of Palestinian society. To this end, the methodology used in conducting them and the issue of the representativeness of opinions surveyed are discussed. The analysis places emphasis on the effects of Palestinian culture, on the process itself and its results, especially in a political atmosphere that has been de-developed and charged with tension, insecurity and continued conflict. This study further argues that in the absence of a census of all Palestinians, including those still living in exile, no sample can be truly representative of what the entire population of Palestinians thinks. In trying to bridge the legitimacy gap in the practice of public opinion polling in Palestine, this dissertation offers recommendations to organizations entering into the field of survey research, which if not capable of contributing to their development as an integral and dynamic part of Palestinian society, will at least form a basis for further relevant research.
Anthophora (Micranthophora) abroniae Timberlake 1937
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Anthophora (Micranthophora) abroniae Timberlake, 1937
[Holotype: AMNH; ♂ Palm Springs at edge of town, California, USA; April 9, 1932]
Anthophora abroniae is abundant in the Sonoran and Mojave deserts and is a pollen specialist on early-blooming sand verbena in the genus Abronia Juss Orr et al. (2018). In BC, it has been collected in the Lower Colorado Desert and in the Chaparral region (Orr et al. 2018). The BBPT collected three females in the Lower Colorado Desert in Cerro Prieto, Mexicali in June 2021. Voucher specimens are in MABC (2 ♀), and ECOAB (1 ♀). See fig. 71.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 129, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532