cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessing contrast sensitivity function in CRB1-retinopathies: Exploring child-friendly measures of visual function.
Creators: name: Rodriguez-Martinez, Ana Catalina
name: Tailor-Hamblin, Vijay K
name: Crossland, Michael D
name: Higgins, Bethany E
name: Blindow, Enzo
name: Dekker, Tessa M
name: Greenwood, John A
name: Henderson, Robert H
name: Jones, Pete R
name: Moosajee, Mariya
Publisher: name: The Francis Crick Institute
Year: 2025
Subjects: classificationCode: Stem Cells
subject: Stem Cells
classificationCode: Gene Expression
subject: Gene Expression
classificationCode: Genetics & Genomics
subject: Genetics & Genomics
classificationCode: Developmental Biology
subject: Developmental Biology
classificationCode: Neurosciences
subject: Neurosciences
subject: FOS: Clinical medicine
classificationCode: Human Biology & Physiology
subject: Human Biology & Physiology
classificationCode: Model organisms
subject: Model organisms

description: PURPOSE: Mutations affecting the CRB1 gene can result in a range of retinal phenotypes, including early onset severe retinal dystrophy/Leber congenital amaurosis (EOSRD/LCA), retinitis pigmentosa, cone-rod dystrophy (CORD), and macular dystrophy (MD). As research into treatment strategies advances towards clinical translation, there is a need to establish reliable outcome metrics. This study explores the contrast sensitivity function (CSF) across different spatial frequencies in individuals with CRB1-retinopathies using the child-friendly PopCSF test, an iPad-based "gamified" assessment. METHODS: Prospective cross-sectional study of 20 patients with molecularly confirmed biallelic CRB1 pathogenic variants from Moorfields Eye Hospital, London, UK, was conducted. Best-corrected visual acuity (BCVA), contrast sensitivity using the Pelli-Robson chart, and the PopCSF test were performed. RESULTS: Of the 20 CRB1 patients, seven had EOSRD/LCA, three had CORD, and 10 had MD. There was no statistically significant difference between the mean BCVA between phenotypes (P = 0.066). However, a significant difference was found between groups in the mean letter log contrast sensitivity (logCS) and area under the contrast sensitivity function (AUCSF) with P = 0.047 and P < 0.001, respectively. A moderate positive correlation was observed between Pelli-Robson and PopCSF (r = 0.53, P = 0.020). The CRB1 cohort had significantly lower CSF at both low and high spatial frequencies compared to controls. Among the CRB1 phenotypes, patients with EOSRD/LCA, exhibited the lowest CSF. CONCLUSIONS: This study is the first to examine CSF across spatial frequencies in patients with CRB1-retinopathies using the novel PopCSF test. TRANSLATIONAL RELEVANCE: The CSF holds promise as a potential functional vision trial endpoint.
On the regularity of maximal operators
Creators: name: Carneiro, Emanuel
name: Moreira, Diego
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B25, 54C08, 46E35

description: We study the regularity of the bilinear maximal operator when applied to Sobolev functions, proving that it maps $W^{1,p}(\mathbb{R}) \times W^{1,q}(\mathbb{R}) \to W^{1,r}(\mathbb{R})$ with $1 1$. We also investigate the almost everywhere and weak convergence under the action of the classical Hardy-Littlewood maximal operator, both in its global and local versions.
description: 10 pages
Continuous-variable quantum key distribution protocols over noisy channels
Creators: name: Garcia-Patron, Raul
name: Cerf, Nicolas J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A continuous-variable quantum key distribution protocol based on squeezed states and heterodyne detection is introduced and shown to attain higher secret key rates over a noisy line than any other one-way Gaussian protocol. This increased resistance to channel noise can be understood as resulting from purposely adding noise to the signal that is converted into the secret key. This notion of noise-enhanced tolerance to noise also provides a better physical insight into the poorly understood discrepancies between the previously defined families of Gaussian protocols.
description: Minor modifications to match published manuscript
A shrinking Compact Symmetric Object: J11584+2450?
Creators: name: Tremblay, S. E.
name: Taylor, G. B.
name: Helmboldt, J. F.
name: Fassnacht, C. D.
name: Pearson, T. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present multi-frequency multi-epoch Very Long Baseline Array (VLBA) observations of J11584+2450. These observations clearly show this source, previously classified as a core-jet, to be a compact symmetric object (CSO). Comparisons between these new data and data taken over the last 9 years shows the edge brightened hot spots retreating towards the core (and slightly to the west) at approximately 0.3c. Whether this motion is strictly apparent or actually physical in nature is discussed, as well as possible explanations, and what implications a physical contraction of J11584+2450 would have for current CSO models.
description: 16 pages, 6 figures, 5 tables. Accepted for publication in ApJ
Untersuchung zur Natur von Migrationsproblemen in JavaScript Webapplikations-Frameworks
Creators: name: Rüschoff, Julian
Publisher: name: Zenodo
Year: 2021
Subjects: Migrationsprobleme
JavaScript-Framework

description: Durch neue und ständig wechselnde Technologien und Anforderungen im Bereich der Webtechnologien kann es sein, dass Unternehmen oder Personen zu der Entscheidung kommen, eine bestehende (Web)-Applikation auf ein JavaScript Framework zu migrieren. Eine Migration ist allerdings mit einem Risiko verbunden. Es können zahlreiche Probleme in einer Migration auftreten. Diese Probleme wurden in dieser Arbeit genauer untersucht. Das Ziel der Arbeit war, die Probleme, die auftreten können, zu identifizieren. Weitergehend wurde untersucht, unter welchen Voraussetzungen diese Migrationsprobleme auftreten und welche Auswirkungen die Migrationsprobleme zum einen auf die JavaScript Framework Migration selbst und zum anderen auf die spätere Webapplikation haben. Zudem wurde darauf eingegangen, wie man versuchen kann, die Migrationsprobleme in der Planung zu verhindern oder in der Migration zu beheben. Die Ergebnisse dieser Arbeit sollen helfen, eine geplante Migration zu optimieren und Probleme zu vermeiden. Es wurde eine semistrukturelle qualitative Umfrage zur Offenlegung von Migrationsproblemen durchgeführt. In dieser Umfrage wurden Personen, die mindestens eine Migration durchgeführt haben und Erfahrungen in Webtechnologien haben, zu ihren Erfahrungen mit Migrationen befragt. Der Schwerpunkt der Befragung lag auf der Planung, Durchführung und den aufgetretenen Problemen bei Migrationen auf JavaScript Frameworks.
Diamond Open Access newsletter Issue 1
Creators: name: Lameris, Bregt
name: Holwerda, Femke
name: Costa Pitanguy, Juliana
name: Constantin, Maria Ermioni
Publisher: name: Zenodo
Year: 2025

description: This is the first newsletter edition of the Diamond Open Access Expertise Center delivered on the 28th of March 2025.For updated news and agenda please check the expertise center website here.
An analysis of syntactic errors in the language of hearing impaired students
Creators: name: Pudlas, Kenneth Arthur
Publisher: name: University of British Columbia
Year: 2010

description: This study examined student responses to those items from the Test of Syntactic Abilities- (TSA) which assess, complementation. The students who formed the sample had hearing threshold levels (HTL) of 90 dB or greater in the better ear. They ranged in age from 8 to 19 years. Students' responses were analyzed in terms of syntactic errors rather than correct responses. The primary purpose of this study was to determine if the students' responses indicated any consistent syntactic deviancies. The results proved inconclusive. Limitations and implications of this research are discussed.
Chimera states in heterogeneous networks
Creators: name: Laing, Carlo R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Chimera states in networks of coupled oscillators occur when some fraction of the oscillators synchronise with one another, while the remaining oscillators are incoherent. Several groups have studied chimerae in networks of identical oscillators, but here we study these states in a heterogeneous model for which the natural frequencies of the oscillators are chosen from a distribution. We obtain exact results by reduction to a finite set of differential equations. We find that heterogeneity can destroy chimerae, destroy all states except chimerae, or destabilise chimerae in Hopf bifurcations, depending on the form of the heterogeneity.
description: Revised text. To appear, Chaos
Magnetic Twists of Solar Filaments
Creators: name: Guo, Jinhan
name: Ni, Yiwei
name: Qiu, Ye
name: Zhong, Ze
name: Guo, Yang
name: Chen, Pengfei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar filaments are cold and dense materials situated in magnetic dips, which show distinct radiation characteristics compared to the surrounding coronal plasma. They are associated with coronal sheared and twisted magnetic field lines. However, the exact magnetic configuration supporting a filament material is not easy to be ascertained because of the absence of routine observations of the magnetic field inside filaments. Since many filaments lie above weak-field regions, it is nearly impossible to extrapolate their coronal magnetic structures by applying the traditional methods to noisy photospheric magnetograms, in particular the horizontal components. In this paper, we construct magnetic structures for some filaments with the regularized Biot--Savart laws and calculate their magnetic twists. Moreover, we make a parameter survey for the flux ropes of the Titov-Demoulin-modified model to explore the factors affecting the twist of a force-free magnetic flux rope. It is found that the twist of a force-free flux rope is proportional to its axial length to minor radius ratio, and is basically independent of the overlying background magnetic field strength. Thus, we infer that long quiescent filaments are likely to be supported by more twisted flux ropes than short active-region filaments, which is consistent with observations.
description: 30 pages, 10 figures, 2 tables, accepted for publication in ApJ
Sharp approximations to the Bernoulli periodic functions by trigonometric polynomials
Creators: name: Carneiro, Emanuel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42A05, 42A10, 41A52

description: We obtain optimal trigonometric polynomials of a given degree $N$ that majorize, minorize and approximate in $L^1(\mathbb{R}/\mathbb{Z})$ the Bernoulli periodic functions. These are the periodic analogues of two works of F. Littmann that generalize a paper of J. Vaaler. As applications we provide the corresponding Erdös-Turán-type inequalities, approximations to other periodic functions and bounds for certain Hermitian forms.
description: 14 pages. Accepted for publication in the J. Approx. Theory. V2 has additional references and some typos corrected
Polynomial-Division-Based Algorithms for Computing Linear Recurrence Relations
Creators: name: Berthomieu, Jérémy
name: Faugère, Jean-Charles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Sparse polynomial interpolation, sparse linear system solving or modular rational reconstruction are fundamental problems in Computer Algebra. They come down to computing linear recurrence relations of a sequence with the Berlekamp-Massey algorithm. Likewise, sparse multivariate polynomial interpolation and multidimensional cyclic code decoding require guessing linear recurrence relations of a multivariate sequence.Several algorithms solve this problem. The so-called Berlekamp-Massey-Sakata algorithm (1988) uses polynomial additions and shifts by a monomial. The Scalar-FGLM algorithm (2015) relies on linear algebra operations on a multi-Hankel matrix, a multivariate generalization of a Hankel matrix. The Artinian Gorenstein border basis algorithm (2017) uses a Gram-Schmidt process.We propose a new algorithm for computing the Gr{ö}bner basis of the ideal of relations of a sequence based solely on multivariate polynomial arithmetic. This algorithm allows us to both revisit the Berlekamp-Massey-Sakata algorithm through the use of polynomial divisions and to completely revise the Scalar-FGLM algorithm without linear algebra operations.A key observation in the design of this algorithm is to work on the mirror of the truncated generating series allowing us to use polynomial arithmetic modulo a monomial ideal. It appears to have some similarities with Pad{é} approximants of this mirror polynomial.As an addition from the paper published at the ISSAC conferance, we give an adaptive variant of this algorithm taking into account the shape of the final Gr{ö}bner basis gradually as it is discovered. The main advantage of this algorithm is that its complexity in terms of operations and sequence queries only depends on the output Gr{ö}bner basis.All these algorithms have been implemented in Maple and we report on our comparisons.
ЮРИДИЧЕСКАЯ ПРИРОДА И РОЛЬ ПРОКУРАТУРЫ В ЗАЩИТЕ ПРАВ ЧЕЛОВЕКА
Creators: name: Орифжонов, Достон
Publisher: name: Zenodo
Year: 2025

description: Ушбу тезисда Ўзбекистон Республикаси прокуратурасининг ҳуқуқий мақоми, вазифалари ва фаолият йўналишлари таҳлил қилинади. Прокуратура органларининг тараққиёти, уларнинг ҳуқуқий асослари ва давлат бошқарувидаги ўрни ёритилади. Шунингдек, замонавий босқичда прокуратуранинг аҳамияти ва унинг жамиятдаги ролини кучайтириш йўналишлари муҳокама қилинади.
การพัฒนาน้ำยาเจือจางน้ำเชื้อไก่พื้นเมือง เพื่ออนุรักษ์และพัฒนาสายพันธุ์ไก่พื้นเมืองไทย
Creators: name: ทิพย์สุดา บุญมาทัน
Publisher: name: คณะเทคโนโลยีการเกษตร มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2024
Subjects: น้ำยาเจือจางน้ำเชื้อ
ไก่พื้นเมือง

description: วารสารเกษตรพระวรุณ, 21, 2, 83-92
Dephasing-induced growth of discrete crystalline order in spin networks
Creators: name: Sakurai, Akitada
name: Bastidas, Victor M.
name: Estarellas, Marta P.
name: Munro, William J.
name: Nemoto, Kae
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A quantum phase of matter can be understood from the symmetry of the system's Hamiltonian. The system symmetry along the time axis has been proposed to show a new phase of matter referred as discrete-time crystals (DTCs). A DTC is a quantum phase of matter in non-equilibrium systems, and it is also intimately related to the symmetry of the initial state. DTCs that are stable in isolated systems are not necessarily resilient to the influence from the external reservoir. In this paper, we discuss the dynamics of the DTCs under the influence of an environment. Specifically, we consider a non-trivial situation in which the initial state is prepared to partly preserve the symmetry of the Liouvillian. Our analysis shows that the entire system evolves towards a DTC phase and is stabilised by the effect of dephasing. Our results provide a new understanding of quantum phases emerging from the competition between the coherent and incoherent dynamics in dissipative non-equilibrium quantum systems.
description: 9 pages, 6 Figures. Comments are welcom
Relationship of visual sequential memory to spelling ability of grade four subjects
Creators: name: Maitland, Mary Jane
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of the study was to investigate the relationship of visual sequential short-term memory ability to spelling ability. An experimental sample of 77 normal grade four subjects was used. Four criterion-referenced)prerequisite tests were designed and used to ensure inclusion in the study of only those subjects with adequate development of prerequisites designated necessary for the spelling and memory tests applied. The Predictable Words and Unpredictable Words subtests from the Larsen-Hammill Test of Written Spelling were used to measure spelling ability. Visual sequential short-term memory ability was measured by two tests requiring recall of nonmeaningful letter serials of varying lengths. The memory tests were similar except for response mode; one required oral recall while the other required written recall. Both tests were found to have a reliability coefficient of .80. The ability for oral recall of nonmeaningful letter serials on a measure of visual sequential short-term memory was found to be positively and significantly related to the ability to spell phonetically regular words (rt = .655; p = < .05) as well as phonetically irregular words (rt = .488; p = < .05). The ability for written recall of nonmeaningful letter serials on a measure of visual sequential short-term memory was also found to be positively and significantly related to the ability to spell phonetically regular words (rt = . 588 ; p = < .05) as well as phonetically irregular words (rt = .524; p== < .05). Results supported the proposed hypotheses and suggest visual sequential short-term memory for verbal information as a possible cognitive ability underlying the process of spelling.
Some extremal functions in Fourier analysis, II
Creators: name: Carneiro, Emanuel
name: Vaaler, Jeffrey D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 41A30, 41A52, 42A05

description: We obtain extremal majorants and minorants of exponential type for a class of even functions on $\R$ which includes $\log |x|$ and $|x|^α$, where $-1 < α< 1$. We also give periodic versions of these results in which the majorants and minorants are trigonometric polynomials of bounded degree. As applications we obtain optimal estimates for certain Hermitian forms, which include discrete analogues of the one dimensional Hardy-Littlewood-Sobolev inequalities. A further application provides an Erdös-Turán-type inequality that estimates the sup norm of algebraic polynomials on the unit disc in terms of power sums in the roots of the polynomials.
description: 40 pages. Accepted for publication in Trans. Amer. Math. Soc
Universality in the vibrational spectra of weakly-disordered two-dimensional clusters
Creators: name: Matharoo, Gurpreet S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We numerically investigate the vibrational spectra of single-component clusters in two-dimensions. Stable configurations of clusters at local energy minima are obtained, and for each the hessian matrix is evaluated and diagonalized to obtain eigenvalues as well as eigenvectors. We study the density of states so obtained as a function of the width of the potential well describing the two-body interaction. As the width is reduced, as in three dimensions, we find that the density of states approaches a common form, but the two-peak behavior survives. Further, calculations of the participation ratio show that most states are extended, although a smaller fraction of the degrees of freedom are involved in these modes, compared to three dimensions. We show that the fluctuation properties of these modes converges to those of the Gaussian orthogonal ensemble of random matrices, in common with previous results on three dimensional amorphous clusters and molecular liquids
description: 6 pages, 5 Figures, Accepted for publication in J. Phys.: Condens. Matt
Satterthwaite-Thompson House, Front View
Creators: name: Weber, Harvey A.
Publisher: name: Unknown
Year: 1970
Subjects: Photographs
Photos
Historic buildings
East Hampton
Structures
Dwellings

description: This image shows the Satterthwaite-Thompson House's front door, located on Ocean Avenue. This image was taken by photographer Harvey A. Weber (1917-1991) and is part of the East Hampton’s Heritage Photo Collection.
description: Images within East Hampton Heritage Photo Collection seem to have been taken or collected in relation to the East Hampton Heritage project, but not all of them were included in the final publication. Several photographer are included in this collection.
Probing the large-scale structure of the universe through gravitational-wave observations
Creators: name: Shao, Xiaoyun
name: Cao, Zhoujian
name: Fan, Xilong
name: Wu, Shichao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The improvements in the sensitivity of the gravitational wave (GW) network enable the detection of several large redshift GW sources by third-generation GW detectors. These advancements provide an independent method to probe the large-scale structure of the universe by using the clustering of the binary black holes. The black hole catalogs are complementary to the galaxy catalogs because of large redshifts of GW events, which may imply that binary black holes (BBHs) are a better choice than galaxies to probe the large-scale structure of the universe and cosmic evolution over a large redshift range. To probe the large-scale structure, we used the sky position of the binary black holes observed by third-generation GW detectors to calculate the angular correlation function (ACF) and the bias factor of the population of binary black holes. This method is also statistically significant as 5000 BBHs are simulated. Moreover, for the third-generation GW detectors, we found that the bias factor can be recovered to within 33$\%$ with an observational time of ten years. This method only depends on the GW source-location posteriors; hence, it can be an independent method to reveal the formation mechanisms and origin of the BBH mergers compared to the electromagnetic method.
description: 14 pages, 3 figures. Accepted by RAA
Configuration mixing in the neutron-deficient $^{186-196}$Pb isotopes
Creators: name: Hellemans, V.
name: De Baerdemacker, S.
name: Heyde, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this article we report the results of detailed interacting boson model calculations with configuration mixing for the neutron-deficient Pb isotopes. Calculated energy levels and $B(E2)$ values for $^{188-196}$Pb are discussed and some care is suggested concerning the current classification on the basis of level systematics of the $4_1^+$ and $6_1^+$ states in $^{190-194}$Pb. Furthermore, quadrupole deformations are extracted for $^{186-196}$Pb and the mixing between the different families (0p-0h, 2p-2h, and 4p-4h) is discussed in detail. Finally, the experimental and the theoretical level systematics are compared.
description: to be published in Phys. Rev. C
Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family
Creators: name: Margadonna, Serena
name: Takabayashi, Yasuhiro
name: McDonald, Martin T.
name: Brunelli, Michela
name: Wu, G.
name: Liu, R. H.
name: Chen, X. H.
name: Prassides, Kosmas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The fluorine-doped rare-earth iron oxyarsenides, REFeAsO1-xFx (RE =rare earth) have recently emerged as a new family of high-temperature superconductors with transition temperatures (Tc) as high as 55 K (refs 1-4). Early work has provided compelling evidence that the undoped parent materials exhibit spin-density-wave (SDW) antiferromagnetic order and undergo a structural phase transition from tetragonal to orthorhombic crystal symmetry upon cooling.5 Both the magnetic and structural instabilities are suppressed upon doping with fluoride ions before the appearance of superconductivity.6,7 Here we use high-resolution synchrotron X-ray diffraction to study the structural properties of SmFeAsO1-xFx (0 < x < 0.20) in which superconductivity emerges near x ~ 0.07 and Tc increases monotonically with doping up to x ~ 0.20.8 We find that orthorhombic symmetry survives through the metal-superconductor boundary well into the superconducting regime 2 and the structural distortion is only suppressed at doping levels, x > 0.15 when the superconducting phase becomes metrically tetragonal. Remarkably this crystal symmetry crossover coincides with reported drastic anomalies in the resistivity and the Hall coefficient8 and a switch of the pressure coefficient of Tc from positive to negative,9 thereby implying that the low-temperature structure plays a key role in defining the electronic properties of these superconductors.
Constraining Cosmology with High Convergence Regions in Weak Lensing Surveys
Creators: name: Wang, Sheng
name: Haiman, Zoltán
name: May, Morgan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose to use a simple observable, the fractional area of "hot spots" in weak gravitational lensing mass maps which are detected with high significance, to determine background cosmological parameters. Because these high-convergence regions are directly related to the physical nonlinear structures of the universe, they derive cosmological information mainly from the nonlinear regime of density fluctuations. We show that in combination with future cosmic microwave background anisotropy measurements, this method can place constraints on cosmological parameters that are comparable to those from the redshift distribution of galaxy cluster abundances. The main advantage of the statistic proposed in this paper is that projection effects, normally the main source of uncertainty when determining the presence and the mass of a galaxy cluster, here serve as a source of information.
description: 14 pages, 4 figures, accepted for publication in Astrophysical Journal
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Vidick, Thomas
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Mathematics of computing
subject: Theory of computation

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 151, 11th Innovations in Theoretical Computer Science Conference (ITCS 2020), pages 0:i-0:xvi
Some extremal functions in Fourier analysis, III
Creators: name: Carneiro, Emanuel
name: Vaaler, Jeffrey D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 41A30, 41A52, 42A05

description: We obtain the best approximation in $L^1(\R)$, by entire functions of exponential type, for a class of even functions that includes $e^{-λ|x|}$, where $λ>0$, $\log |x|$ and $|x|^α$, where $-1 < α< 1$. We also give periodic versions of these results where the approximating functions are trigonometric polynomials of bounded degree.
description: 26 pages. Submitted
D.4.4_Policy Feedback Report 1
Creators: name: Consulta Europa Projects and Innovation
Publisher: name: Zenodo
Year: 2025

description: The "D.4.4 Policy Feedback Report" focuses on the impact of innovation, circularity, and digitalization in marine ecotourism within Europe's Outermost Regions (ORs). It highlights co-created sustainable tourism products, such as "Atlantic Starlight Adventures" and "Atlantic On-board Internships," and discusses the challenges faced by small tourism businesses.
Earth-mass primordial black hole mergers as sources for non-repeating FRBs
Creators: name: Deng, Can-Min
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are mysterious astronomical radio transients with extremely short intrinsic duration. Until now, the physical origins of them still remain elusive especially for the non-repeating FRBs. Strongly inspired by recent progress on possible evidence of Earth-mass primordial black holes, we revisit the model of Earth-mass primordial black holes mergers as sources for non-repeating FRBs. Under the null hypothesis that the observed non-repeating FRBs are originated from the mergers of Earth-mass primordial black holes, we analyzed four independent samples of non-repeating FRBs to study the model parameters i.e. the typical charge value $q_{\rm{c}}$ and the power index $α$ of the charge distribution function of the primordial black hole population $ϕ(q) \propto (q/q_{\rm{c}})^{-α}$ which describe how the charge was distributed in the population. $q$ is the charge of the hole in the unit of $\sqrt{G} M$, where $M$ is the mass of the hole. It turns out that this model can explain the observed data well. {Assuming the monochromatic mass spectrum for primordial black holes}, we get the average value of typical charge $\bar{q}_{\rm{c}}/10^{-5}=1.59^{+0.08}_{-0.18}$ and the power index $\barα=4.53^{+0.21}_{-0.14}$ by combining the fitting results given by four non-repeating FRB samples. The event rate of the non-repeating FRBs can be explained in the context of this model, if the abundance of the primordial black hole populations with charge $q \gtrsim 10^{-6}$ is larger than $10^{-5}$ which is far below the upper limit given by current observations for the abundance of Earth-mass primordial black holes. In the future, simultaneous detection of FRBs and high frequency gravitational waves produced by mergers of Earth-mass primordial black holes may directly confirm or deny this model.
description: 9 pages, 5 figures, 1 table; published in PRD
Heavy Quarks Above the Top at the Tevatron
Creators: name: Atre, Anupama
name: Carena, Marcela
name: Han, Tao
name: Santiago, Jose
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent developments in models with warped extra dimensions have opened new possibilities for vector-like quark studies at hadron colliders. These new vector-like quarks can mix sizably with light Standard Model quarks without violating low energy constraints. We perform a model-independent analysis to determine the Tevatron reach in the search for new quarks. We find that the Tevatron has great potential to observe such quarks via their electroweak single production due to their mixing with valence quarks. With 4 (8) fb-1 integrated luminosity, one may reach a 5σstatistical significance for a heavy quark of mass 580 (630) GeV if the heavy quark-Standard Model quark mixing parameter is order one.
description: Version published in Phys. Rev. D; 19 pages, 4 figures; extended version including model building example; added Table 5
Co-occurrence of medical conditions: Exposing patterns through probabilistic topic modeling of SNOMED codes
Creators: name: Bhattacharya, Moumita
name: Jurkovitz, Claudine
name: Shatkay, Hagit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Patients associated with multiple co-occurring health conditions often face aggravated complications and less favorable outcomes. Co-occurring conditions are especially prevalent among individuals suffering from kidney disease, an increasingly widespread condition affecting 13% of the general population in the US. This study aims to identify and characterize patterns of co-occurring medical conditions in patients employing a probabilistic framework. Specifically, we apply topic modeling in a non-traditional way to find associations across SNOMEDCT codes assigned and recorded in the EHRs of>13,000 patients diagnosed with kidney disease. Unlike most prior work on topic modeling, we apply the method to codes rather than to natural language. Moreover, we quantitatively evaluate the topics, assessing their tightness and distinctiveness, and also assess the medical validity of our results. Our experiments show that each topic is succinctly characterized by a few highly probable and unique disease codes, indicating that the topics are tight. Furthermore, inter-topic distance between each pair of topics is typically high, illustrating distinctiveness. Last, most coded conditions grouped together within a topic, are indeed reported to co-occur in the medical literature. Notably, our results uncover a few indirect associations among conditions that have hitherto not been reported as correlated in the medical literature.
The acquisition of semantic features in children with Down’s sydrome
Creators: name: Dixon, Patricia A.
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed to test the notion that children with Down's Syndrome develop their receptive language in the same order as normal children. E. Clark's Semantic Features Hypothesis which predicts a specific hierarchical acquisition of spatial adjectives was used to test this thesis. Two groups of preschool children, a group of children with Down's syndrome and a group of matched for chronological age were presented with forty tasks involving the selection of spatial adjectives. No significant differences were found in the performances of the two groups when taken as a whole. However, there were significant differences between the performances of the children in the younger group with Down's Syndrome and the other those of the other three groups of children.
A sharp inequality for the Strichartz norm
Creators: name: Carneiro, Emanuel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A44, 42A05

description: Let $u:\R \times \R^n \to \C$ be the solution of the linear Schrödinger equation $iu_t + Δu =0$ with initial data $u(0,x) = f(x)$. In the first part of this paper we obtain a sharp inequality for the Strichartz norm $\|u(t,x)\|_{L^{2k}_tL^{2k}_x(\R \times\R^n)}$, where $k\in \Z$, $k \geq 2$ and $(n,k) \neq (1,2)$, that admits only Gaussian maximizers. As corollaries we obtain sharp forms of the classical Strichartz inequalities in low dimensions (works of Foschi and Hundertmark - Zharnitsky) and also sharp forms of some Sobolev-Strichartz inequalities. In the second part of the paper we express Foschi's sharp inequalities for the Schrödinger and wave equations in the broader setting of sharp restriction/extension estimates for the paraboloid and the cone.
description: 15 pages. Submitted
Spin polarization control via magnetic barriers and spin-orbit effects
Creators: name: Ngo, Anh T.
name: Villas-Boas, J. M.
name: Ulloa, Sergio E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the spin-dependent transport properties of two-dimensional electron gas (2DEG) systems formed in diluted magnetic semiconductors and in the presence of Rashba spin-orbit interaction in the framework of the scattering matrix approach. We focus on nanostructures consisting of realistic magnetic barriers produced by the deposition of ferromagnetic strips on heterostructures. We calculate spin-dependente conductance of such barrier systems and show that the magnetization pattern of the strips, the tunable spin-orbit coupling, and the enhanced Zeeman splitting have a strong effect on the conductance of the structure. We describe how these effects can be employed in the efficient control of spin polarization via the application of moderate fields.
Coherent terahertz-to-microwave link using electro-optic-modulated Turing rolls
Creators: name: Weng, Wenle
name: Anderson, Miles H.
name: Siddharth, Anat
name: He, Jijun
name: Raja, Arslan S.
name: Kippenberg, Tobias J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Arising from modulation instability, Turing rolls in optical Kerr microresonators have been used in the generation of optical frequency combs and the synthesis of microwave and terahertz frequencies. In this work, by applying electro-optic modulation on terahertz-frequency Turing rolls, we implement electro-optic frequency division with a microcomb to synthesize variable low-noise microwave signals. We also actively stabilize the terahertz oscillations to a microwave reference via intracavity power modulation, obtaining fractional frequency instabilities that are better than those of the free-running situation by up to six orders of magnitude. This study not only highlights the extraordinary spectral purity of Turing roll oscillations but also opens the way for bidirectional terahertz-to-microwave links with hybrid optical frequency comb techniques.
ZAMONAVIY TA'LIMDA TEXNOLOGIYANING ROLI VA UNING AFZALLIKLARI
Creators: name: Yaxshimurotova, Aziza
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada zamonaviy ta'limda texnologiyaning roli va uning ta'lim jarayonidagi afzalliklari ko‘rib chiqiladi. Zamonaviy axborot va kommunikatsiya texnologiyalari (AKT) o‘quv usullarini sezilarli darajada o‘zgartirib, ularni yanada interaktiv va qulay qilmoqda. Maqolada ta'lim tizimiga texnologiyalarni joriy etishning turli jihatlari, masalan, onlayn kurslar, virtual sinflar va ta'lim platformalarining foydalari tahlil qilinadi. Shuningdek, texnologiyalar bilim olish imkoniyatlarini kengaytirish, ta'limni individualizatsiya qilish imkoniyatlari yaratish va talabalar orasida tanqidiy fikrlashni rivojlantirishdagi ahamiyati ko‘rsatilgan.
Deformations of glued G_2-manifolds
Creators: name: Nordström, Johannes
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C29

description: We study how a gluing construction, which produces compact manifolds with holonomy G_2 from matching pairs of asymptotically cylindrical G_2-manifolds, behaves under deformations. We show that the gluing construction defines a smooth map from a moduli space of gluing data to the moduli space of torsion-free G_2-structures on the glued manifold, and that this is a local diffeomorphism. We use this to partially compactify the moduli space of torsion-free G_2-structures, including it as the interior of a topological manifold with boundary. The boundary points are equivalence classes of matching pairs of torsion-free asymptotically cylindrical G_2-structures.
description: 13 pages; minor corrections, numbering changed to match print version
Staff cohesion in residential treatment
Creators: name: Johnson, Susan Maureen
Publisher: name: University of British Columbia
Year: 2010

description: This thesis attempts to examine the effect of varying levels of staff cohesion, a key process variable in the residential treatment of disturbed adolescents, on the quality of treatment environment. In order to do this the staff from each of the three residential cottages which constitute the Easton residential unit were given the Seashore Index of Group Cohesiveness (1954). It was then possible to delineate three levels of staff coehsion, high, medium, and low. The same staff groups also completed a treatment environment scale, namely the Community Orientated Programs Environment Scale (Moos, 1974), Forms R (real) and I (ideal). The hypothesis here was that as staff cohesion rose so the perceived quality of the treatment environment would rise. The clients from the cottages also completed the environment scale, the hypothesis being that their perceptions of the environment would be more positive in the cottage containing the most cohesive staff group. Client behaviours in the low, medium and high cohesion cottages were also observed. The study showed that there were no significant differences between the staff groups concerning their view of the ideal treatment environment, but the level of cohesion did have an effect on the real treatment environment, as perceived by the staff, specifically on the variables Support, Personal Problem Orientation, Autonomy, Practical Orientation and Staff Control. The number of locked room hours for clients and the number of violent incidents also seemed to follow the cohesion factor pattern. However, the clients' perceptions of their environment did not vary significantly according to cohesion level. Some descriptive data comparing the factors in the Easton treatment environment to the norms for such programs were also included. Implications for the planning and evaluation of such treatment programs have been outlined as well as suggestions for further research.
The Chandra Deep Field-South Survey: 2 Ms Source Catalogs
Creators: name: Luo, B.
name: Bauer, F. E.
name: Brandt, W. N.
name: Alexander, D. M.
name: Lehmer, B. D.
name: Schneider, D. P.
name: Brusa, M.
name: Comastri, A.
name: Fabian, A. C.
name: Finoguenov, A.
name: Gilli, R.
name: Hasinger, G.
name: Hornschemeier, A. E.
name: Koekemoer, A.
name: Mainieri, V.
name: Paolillo, M.
name: Rosati, P.
name: Shemmer, O.
name: Silverman, J. D.
name: Smail, I.
name: Steffen, A. T.
name: Vignali, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present point-source catalogs for the ~2 Ms exposure of the Chandra Deep Field-South (CDF-S); this is one of the two most-sensitive X-ray surveys ever performed. The survey covers an area of ~436 arcmin^2 and reaches on-axis sensitivity limits of ~1.9x10^{-17} and ~1.3x10^{-16} ergs/cm^2/s for the 0.5-2.0 and 2-8 keV bands, respectively. Four hundred and sixty-two X-ray point sources are detected in at least one of three X-ray bands that were searched; 135 of these sources are new compared to the previous ~1 Ms CDF-S detections. Source positions are determined using centroid and matched-filter techniques; the median positional uncertainty is ~0.36". The X-ray-to-optical flux ratios of the newly detected sources indicate a variety of source types; ~55% of them appear to be active galactic nuclei while ~45% appear to be starburst and normal galaxies. In addition to the main Chandra catalog, we provide a supplementary catalog of 86 X-ray sources in the ~2 Ms CDF-S footprint that was created by merging the ~250 ks Extended Chandra Deep Field-South with the CDF-S; this approach provides additional sensitivity in the outer portions of the CDF-S. A second supplementary catalog that contains 30 X-ray sources was constructed by matching lower significance X-ray sources to bright optical counterparts (R<23.8); the majority of these sources appear to be starburst and normal galaxies. The total number of sources in the main and supplementary catalogs is 578. R-band optical counterparts and basic optical and infrared photometry are provided for the X-ray sources in the main and supplementary catalogs. We also include existing spectroscopic redshifts for 224 of the X-ray sources. (Abstract abridged)
description: 18 pages, 15 figures, ApJS in press. Data and images available at http://www.astro.psu.edu/users/niel/cdfs/cdfs-chandra.html
Electron-phonon bound states and impurity band formation in quantum wells
Creators: name: de Oliveira, Bruna P. W.
name: Haas, Stephan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A generalized propagation matrix method is used to study how scattering off local Einstein phonons affects resonant electron transmission through quantum wells. In particular, the parity and the number of the phonon mediated satellite resonances are found to depend on the available scattering channels. For a large number of phonon channels, the formation of low-energy impurity bands is observed. Furthermore, an effective theory is developed which accurately describes the phonon generated sidebands for sufficiently small electron-phonon coupling. Finally, the current-voltage characteristics caused by phonon assisted transmission satellites are discussed for a specific double barrier geometry.
description: 17 pages, 5 figures, 1 table; figure, content and references added
Simulations of Magnetorotational Turbulence with a Higher-Order Godunov Scheme
Creators: name: Simon, Jacob B.
name: Hawley, John F.
name: Beckwith, Kris
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We apply a second-order Godunov code, Athena, to studies of the magnetorotational instability using unstratified shearing box simulations with a uniform net vertical field and a sinusoidally varying zero net vertical field. The Athena results agree well with similar studies that used different numerical algorithms. We conduct analyses to study the flow of energy from differential rotation to turbulent fluctuations to thermalization. A study of the temporal correlation between the time derivatives of volume-averaged energy components shows that energy injected into turbulent fluctuations dissipates on a timescale of $Ω^{-1}$, where $Ω$ is the orbital frequency of the local domain. Magnetic dissipation dominates over kinetic dissipation, although not by as great a factor as the ratio of magnetic to kinetic energy. We Fourier-transform the magnetic and kinetic energy evolution equations and, using the assumption that the time-averaged energies are constant, determine the level of numerical dissipation as a function of length scale and resolution. By modeling numerical dissipation as if it were physical in origin, we characterize numerical resistivity and viscosity in terms of effective Reynolds and Prandtl numbers. The resulting effective magnetic Prandtl number is $\sim 2$, independent of resolution or initial field geometry. MRI simulations with effective Reynolds and Prandtl numbers determined by numerical dissipation are not equivalent to those where these numbers are set by physical resistivity and viscosity. These results serve, then, as a baseline for future shearing box studies where dissipation is controlled by the inclusion of explicit viscosity and resistivity.
description: Accepted by ApJ; version 2 - minor changes following review; 59 pages (preprint format), 19 figures
Target Localization Accuracy Gain in MIMO Radar Based Systems
Creators: name: Godrich, Hana
name: Haimovich, Alexander M.
name: Blum, Rick S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper presents an analysis of target localization accuracy, attainable by the use of MIMO (Multiple-Input Multiple-Output) radar systems, configured with multiple transmit and receive sensors, widely distributed over a given area. The Cramer-Rao lower bound (CRLB) for target localization accuracy is developed for both coherent and non-coherent processing. Coherent processing requires a common phase reference for all transmit and receive sensors. The CRLB is shown to be inversely proportional to the signal effective bandwidth in the non-coherent case, but is approximately inversely proportional to the carrier frequency in the coherent case. We further prove that optimization over the sensors' positions lowers the CRLB by a factor equal to the product of the number of transmitting and receiving sensors. The best linear unbiased estimator (BLUE) is derived for the MIMO target localization problem. The BLUE's utility is in providing a closed form localization estimate that facilitates the analysis of the relations between sensors locations, target location, and localization accuracy. Geometric dilution of precision (GDOP) contours are used to map the relative performance accuracy for a given layout of radars over a given geographic area.
description: 36 pages, 5 figures, submitted to IEEE Transaction on Information Theory