cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving Stock Market Prediction via Heterogeneous Information Fusion
Creators: name: Zhang, Xi
name: Zhang, Yunjia
name: Wang, Senzhang
name: Yao, Yuntao
name: Fang, Binxing
name: Yu, Philip S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Traditional stock market prediction approaches commonly utilize the historical price-related data of the stocks to forecast their future trends. As the Web information grows, recently some works try to explore financial news to improve the prediction. Effective indicators, e.g., the events related to the stocks and the people's sentiments towards the market and stocks, have been proved to play important roles in the stocks' volatility, and are extracted to feed into the prediction models for improving the prediction accuracy. However, a major limitation of previous methods is that the indicators are obtained from only a single source whose reliability might be low, or from several data sources but their interactions and correlations among the multi-sourced data are largely ignored. In this work, we extract the events from Web news and the users' sentiments from social media, and investigate their joint impacts on the stock price movements via a coupled matrix and tensor factorization framework. Specifically, a tensor is firstly constructed to fuse heterogeneous data and capture the intrinsic relations among the events and the investors' sentiments. Due to the sparsity of the tensor, two auxiliary matrices, the stock quantitative feature matrix and the stock correlation matrix, are constructed and incorporated to assist the tensor decomposition. The intuition behind is that stocks that are highly correlated with each other tend to be affected by the same event. Thus, instead of conducting each stock prediction task separately and independently, we predict multiple correlated stocks simultaneously through their commonalities, which are enabled via sharing the collaboratively factorized low rank matrices between matrices and the tensor. Evaluations on the China A-share stock data and the HK stock data in the year 2015 demonstrate the effectiveness of the proposed model.
description: Accepted by Knowledge-Based Systems
Metallicity of the intergalactic medium using pixel statistics: IV. Oxygen
Creators: name: Aguirre, Anthony
name: Dow-Hygelund, Corey
name: Schaye, Joop
name: Theuns, Tom
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the abundance of oxygen in the IGM by analyzing OVI, CIV, SiIV, and HI pixel optical depths derived from a set of high-quality VLT and Keck spectra of 17 QSOs at 2.1 < z < 3.6. Comparing OVI and CIV optical depth ratios to those in realistic, synthetic spectra drawn from a hydrodynamical simulation and comparing to existing constraints on [Si/C] places strong constraints on the ultraviolet background (UVB) model using weak priors on allowed values of [Si/O]: for example, a quasar-only background yields [Si/O] ~ 1.4, highly inconsistent with the [Si/O] ~ 0 expected from nucleosynthetic yields and with observations of metal-poor stars. Assuming a fiducial quasar+galaxy UVB consistent with these constraints yields a primary result that [O/C] = 0.66 +/- 0.06 +/- 0.2; this result pertains to gas with overdensity >~ 0.2. Consistent results are obtained by similarly comparing OVI to HI or OVI to SiIV optical depth ratios to simulation values, and also by directly ionization-correcting OVI optical depths as function of HI optical depths into [O/H] as a function of density. Subdividing the sample reveals no evidence for evolution, but low- and high-density samples are inconsistent, suggesting either density-dependence of [O/C] or -- more likely -- prevalence of collisionally-ionized gas at high density.
description: 13 ApJ-style pages, 11 color figures, minor revisions to match version accepted by ApJ
Solving the Capacitated Local Access Network Design Problem
Creators: name: F. Sibel Salman
name: Ramamoorthi Ravi
name: Hooker, John N.
Publisher: name: Carnegie Mellon University
Year: 1985
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We propose an exact solution method for a routing and capacity installation problem in networks. Given an input graph, the problem is to route traffic from a set of source nodes to a sink node and to install transmission facilities on the edges of the graph to accommodate the flow at minimum cost. We give a branch-and-bound algorithm that solves relaxations obtained by approximating the noncontinuous cost function by its lower convex envelope. The approximations are refined by branching on the flow ranges on selected edges. Our computational experiments indicate that this method is effective in solving moderate-size problems and provides very good candidate solutions early in the branch-and-bound tree.
Replication study: Development and validation of deep learning algorithm for detection of diabetic retinopathy in retinal fundus photographs
Creators: name: Voets, Mike
name: Møllersen, Kajsa
name: Bongo, Lars Ailo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Replication studies are essential for validation of new methods, and are crucial to maintain the high standards of scientific publications, and to use the results in practice. We have attempted to replicate the main method in 'Development and validation of a deep learning algorithm for detection of diabetic retinopathy in retinal fundus photographs' published in JAMA 2016; 316(22). We re-implemented the method since the source code is not available, and we used publicly available data sets. The original study used non-public fundus images from EyePACS and three hospitals in India for training. We used a different EyePACS data set from Kaggle. The original study used the benchmark data set Messidor-2 to evaluate the algorithm's performance. We used the same data set. In the original study, ophthalmologists re-graded all images for diabetic retinopathy, macular edema, and image gradability. There was one diabetic retinopathy grade per image for our data sets, and we assessed image gradability ourselves. Hyper-parameter settings were not described in the original study. But some of these were later published. We were not able to replicate the original study. Our algorithm's area under the receiver operating curve (AUC) of 0.94 on the Kaggle EyePACS test set and 0.80 on Messidor-2 did not come close to the reported AUC of 0.99 in the original study. This may be caused by the use of a single grade per image, different data, or different not described hyper-parameter settings. This study shows the challenges of replicating deep learning, and the need for more replication studies to validate deep learning methods, especially for medical image analysis. Our source code and instructions are available at: https://github.com/mikevoets/jama16-retina-replication
description: The third version of this paper includes results from replication after certain hyper-parameters were published in later article. 16 pages, 6 figures, 1 table, presented at NOBIM 2018
Limit theorems for multivariate Bessel processes in the freezing regime
Creators: name: Andraus, Sergio
name: Voit, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 60F15, Secondary 60F05, 60J60, 60B20, 60H20, 70F10, 82C22, 33C67

description: Multivariate Bessel processes describe the stochastic dynamics of interacting particle systems of Calogero-Moser-Sutherland type and are related with $β$-Hermite and Laguerre ensembles. It was shown by Andraus, Katori, and Miyashita that for fixed starting points, these processes admit interesting limit laws when the multiplicities $k$ tend to $\infty$, where in some cases the limits are described by the zeros of classical Hermite and Laguerre polynomials. In this paper we use SDEs to derive corresponding limit laws for starting points of the form $\sqrt k\cdot x$ for $k\to\infty$ with $x$ in the interior of the corresponding Weyl chambers. Our limit results are a.s. locally uniform in time. Moreover, in some cases we present associated central limit theorems.
description: 20 pages, 1 figure
On Non-Perturbative Effects at the High-Temperature Electroweak Phase Transition
Creators: name: Shaposhnikov, M.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is argued that confining effects in 3-dimensional non-Abelian gauge theories (high-temperature limit of 4-dimensional ones) imply the existence of the condensates of the gauge and Higgs fields in 3-d vacuum. This non-perturbative effect can decrease the energy of the phase with unbroken symmetry and may result in the creation of a barrier separating the broken and unbroken phases. Thus the high-temperature phase transitions in gauge theories can be stronger first order than is expected from perturbation theory. The applications of these results to electroweak baryogenesis are briefly discussed.
description: 13 pages (Latex with 3 PostScript figures appended at end), CERN-TH.6918/93
Additional file 1 of The metagenomic next-generation sequencing in diagnosing central nervous system angiostrongyliasis: a case report
Creators: name: Feng, Li
name: Zhang, Aiwu
name: Que, Jiali
name: Zhou, Hongyan
name: Wang, Haiyan
name: Guan, Yuanlin
name: Shen, Cunzhou
name: Sun, Xunsha
name: Lai, Rong
name: Peng, Fuhua
name: Feng, Huiyu
name: Chen, Ling
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Additional file 1 The cover chart of serum mNGS. Additional file 1 provided the cover chart of serum mNGS on DAI 16 which was negative in revealing A. cantonensis.
Chern-Simons term in the 4-dimensional SU(2) Higgs Model
Creators: name: Karsch, F.
name: Laursen, M. L.
name: Neuhaus, T.
name: Plache, B.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using Seiberg's definition for the geometric charge in SU(2) lattice gauge theory, we have managed to apply it also to the Chern-Simons term. We checked the periodic structure and determined the Chern-Simons density on small lattices $L^4$ and $L^3 \times 2,\, 4$ with $L=4,\, 6,\mbox{ and }8$ near the critical region in the SU(2) Higgs model. The data indicate that tunneling is increased at high temperature.
description: 7 pages plus 4 PS figures
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0737
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0737, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0737, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Outlining the Local Void with the Parkes HI ZOA and Galactic Bulge Surveys
Creators: name: Kraan-Korteweg, Renee C.
name: Shafi, Nebiha
name: Koribalski, Baerbel
name: Staveley-Smith, Lister
name: Buckland, Peter
name: Henning, Patricia A.
name: Fairall, Anthony P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Parkes deep HI ZOA survey has been extended between 2002 and 2004 towards higher latitudes in the Galactic Bulge region. This area of extreme star crowding and high extinction levels remains impenetrable at any other waveband regime. Preliminary results of the 3 dimensional distribution based on the combined HI-surveys are presented. We focus on the extent and "content" of the Local Void as outlined by these HI surveys, followed by a preliminary discussion of the properties of the few galaxies detected in the Local Void.
description: 4 pages, 2 figures (jpg). To be published in ``Galaxies in the Local Volume'' (Sydney, July 2007), eds. B. Koribalski & H. Jerjen, Astrophys. & Space Science
Continuous-wave solutions and modulational instability in spinor condensates of positronium
Creators: name: Bhat, Ishfaq Ahmad
name: Mithun, Thudiyangal
name: Malomed, B. A.
name: Porsezian, K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We obtain general continuous-wave (CW)\ solutions in the model of a spinor positronium condensate in the absence of magnetic field. The CW solutions with both in-phase ($n=0$) and out-of-phase ($n=1$) spin components exist, with their ranges limited by the total particle density, $ρ$. In the limit of negligible population exchange between the spin components, the CW solutions are found to be stable or unstable, depending on the particle density of the para positronium. Ortho positronium, in the $F=1$ spinor state, forms a ferromagnetic condensate with stable in-phase CW solutions only. Subsequent examination of the modulational instability (MI) is carried out both in the limit case of identical wavenumbers in the spin components, $% Δk\equiv k_{1}-k_{-1}=0$, and in the more general case of $Δk\neq 0$ too. The CW solutions with $n=0$ and $1$ solutions, which are stable in the case of $Δk=0$, are unstable for $Δk\neq 0$, for the natural repulsive sign of the nonlinearities. The total particle density, $ρ$, in the limit of $Δk=0$ is found to have a significant role for the stability of the condensate, which is determined by the sign of the self-interaction nonlinearity.
Rotation-symmetry-enforced coupling of spin and angular momentum for p-orbital bosons
Creators: name: Li, Yongqiang
name: Yuan, Jianmin
name: Hemmerich, Andreas
name: Li, Xiaopeng
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Intrinsic spin angular-momentum coupling of an electron has a relativistic quantum origin with the coupling arising from charged-orbits, which does not carry over to charge-neutral atoms. Here we propose a mechanism of spontaneous generation of spin angular-momentum coupling with spinor atomic bosons loaded into $p$-orbital bands of a two-dimensional optical-lattice. This spin angular-momentum coupling originates from many-body correlations and spontaneous symmetry breaking in a superfluid, with the key ingredients attributed to spin-channel quantum fluctuations and an approximate rotation symmetry. The resultant spin angular-momentum intertwined superfluid has Dirac excitations. In presence of a chemical potential difference for adjacent sites, it provides a bosonic analogue of a symmetry-protected-topological insulator. Through a dynamical mean-field calculation, this novel superfluid is found to be a generic low-temperature phase, and it gives way to Mott localization only at strong interactions and even-integer fillings. We show the temperature to reach this order is accessible with present experiments.
description: 7 pages, 4 figures, 1 table, with supplementary material
Solving Fixed-Charge Network Flow Problems with a Hybrid Optimization and Constraint Programming Approach
Creators: name: Kim, Hak-Jin
name: Hooker, John N.
Publisher: name: Carnegie Mellon University
Year: 1985
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We apply to fixed charge network flow (FCNF) problems a general hybrid solution method that combines constraint programming and linear programming. FCNF problems test the hybrid approach on problems that are already rather well suited for a classical 0–1 model. They are solved by means of a global constraint that generates specialized constraint propagation algorithms and a projected relaxation that can be rapidly solved as a minimum cost network flow problem. The hybrid approach ran about twice as fast as a commercial mixed integer programming code on fixed charge transportation problems with its advantage increasing with problem size. For general fixed charge transshipment problems, however, it has no effect because the implemented propagation methods are weak.
Predicting the neutrino spectrum in minimal SO(10) Grand Unification
Creators: name: Lavoura, L.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analysis of the model of Babu and Mohapatra for the mass matrices in SO(10), with survey of the different types of neutrino spectra possible in that model
description: 7 pages, no figures and no tables, unpublished as a report or preprint, 21 June 1993
Additional file 1 of UC-MSCs promote frozen-thawed ovaries angiogenesis via activation of the Wnt/β-catenin pathway in vitro ovarian culture system
Creators: name: Xu, Wenjuan
name: Wu, Caiyun
name: Zhu, Xiaoqian
name: Wu, Jingjing
name: Zhang, Zhiguo
name: Wei, Zhaolian
name: Cao, Yunxia
name: Zhou, Ping
name: Wang, Jianye
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: Hematology

description: Additional file 1. Figure S1. Representative images of cell apoptosis in the negative controls of immunofluorescence staining. Green represents apoptotic signals. Blue represents DAPI-stained nuclei. Scale bar = 50μm, n=5 (biological replicates).
Search for Low Mass Exotic mesonic structures. Part I: experimental results
Creators: name: Tatischeff, B.
name: Tomasi-Gustafsson, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recently, several papers discussed on the existence of a low mass new structure at a mass close to M=214.3 MeV. It was suggested that the $Σ^{+}$ disintegration: $Σ^{+}\to$pP$^{0}$, P$^{0}\toμ^{-}μ^{+}$ proceeds through an intermediate particle P$^{0}$ having such mass. The present work intends to look at other new or available data, in order to observe the eventual existence of small narrow peaks or shoulders in very low mesonic masses. Indeed narrow structures were already extracted from various data in dibaryons, baryons and mesons (at larger masses that those studied here).
description: 7 pages 11 figures
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 171
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 171, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 171, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Non-uniform measure in 4d simplicial quantum gravity
Creators: name: Bruegmann, Bernd
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Four-dimensional euclidean quantum gravity has been studied as a discrete model based on dynamical triangulations by Ambjorn and Jurkiewicz and by Agishtein and Migdal. We discuss a particular implementation of a Monte Carlo simulation of simplicial quantum gravity. As an application we introduce a non-uniform measure and examine its effect on simple aspects of the mathematical geometry. We find that the transition region from the hot to the cold phase is shifted and that the criticality of the transition changes.
description: SU-GP-92/9-1 12 pages text, 12 figures on 3 pages included as postscript file
Reumatoidartriidi patsientide haigestumus tuberkuloosi enne ja pärast bioloogilise ravi kasutuselevõttu Eestis: kahe perioodi võrdlus
Creators: name: Laas, Karin
name: Teär, Carmen Marianne
name: Pehme, Lea
name: Viiklepp, Piret
name: Fischer, Krista
name: Tammaru, Marika
Publisher: name: Eesti Arst
Year: 2019

description: Taust. Bioloogilise ravi (BR) kasutuselevõtt reumaatiliste haiguste korral on võimaldanud saavutada oluliselt paremaid ravitulemusi. BRi probleemiks on patsientide suurenenud vastuvõtlikkus infektsioonidele ja sagenenud haigestumine tuberkuloosi (TB). Eesmärgid. Võrrelda TB-haigestumust reumatoidartriidi (RA) haigetel enne ja pärast BRi kasutuselevõttu Eestis; kirjeldada TB esinemist BRi saavatel RA-patsientidel. Meetodid. Eesti Haigekassa andmete alusel koostati valim isikutest, kellel aastatel 2004–2017 oli diagnoositud RA koodidega M05 ja M06.0. RA-patsientidel registreeritud TB-juhud leiti linkimisel tuberkuloosiregistriga. Üldrahvastiku TB-haigestumuse hindamiseks kasutati tuberkuloosiregistrit ja Eesti Statistikaameti andmebaasi. Leiti RA-patsientide TB-haigestumus ajavahemikul 2000–2007 ja 2008–2016. Arvutati RA-patsientide vanuse ja soo järgi standarditud TB-haigestumusmäär võrreldavatel perioodidel. Bioloogilise ravi registrist saadi teave TBsse haigestunud RA-patsientide BRi kohta. Tulemused. RA-patsientide üldarv haigekassa andmebaasis oli 5040. Ühe aasta keskmine TB-haigestumus 100 000 RA-patsiendi kohta oli 24,8 perioodil 2000–2007 ja 30,9 perioodil 2008–2016. RA-patsientide standarditud haigestumusmäär (võrreldes üldrahvastikuga) oli 77% (95% usaldusvahemik 41–143) perioodil 2000–2007 ja 200% (95% usaldusvahemik 118–338) perioodil 2008–2016. Bioloogilist ravi sai kolm TBsse haigestunud RA-patsienti. Järeldused. Üldrahvastiku TB-haigestumuse vähenemise foonil on TB-haigestumus RA-patsientidel perioodide 2000–2007 ja 2008–2016 võrdluses suurenenud. Perioodil 2008–2016 oli RA-patsientide TB-haigestumus suurem üldrahvastiku TB-haigestumusest. RA-patsientide TB-haigestumuse suurenemine võib olla seotud BRi kasutuselevõtuga.
description: Eesti Arst, 2019: November
B-hepatiidi viiruse reaktivatsioon immuunsupressioonravi vajaval patsiendil
Creators: name: Rähesoo, Veronica
name: Maimets, Matti
name: Kõivumägi, Kadri
Publisher: name: Eesti Arst
Year: 2019

description: Kogu maailmas leidub hinnanguliselt kuni kaks miljardit inimest, kes on kunagi nakatunud B-hepatiidi viirusega (HBV) ja kellel on üks või teine HBV marker seerumis määratav. Kõikidel nendel isikutel võib olla krooniline HBV-infektsioon, mis immuunsupressiooni foonil võib reaktiveeruda. Seetõttu on oluline immuunsupressiivse ravi eel sõeluurida kõiki patsiente HBV-infektsiooni suhtes. Analüüside tulemuste, kasutatavate ravimpreparaatide ning immuunsupressiivse ravi kestuse põhjal tuleb vajaduse korral alustada ravimiprofülaktikat või patsienti ravi vältel regulaarselt jälgida HBV reaktivatsiooni suhtes. Oluline on meeles pidada, et HBV-infektsioon on alati ohtlik, eriti immuunsupresseeritud patsiendile, kuid õige ennetustegevusega on võimalik HBV reaktivatsiooni vältida.
description: Eesti Arst, 2019: November
Cramer-Rao Bound for Constrained Parameter Estimation Using Lehmann-Unbiasedness
Creators: name: Nitzan, Eyal
name: Routtenberg, Tirza
name: Tabrikian, Joseph
Publisher: name: arXiv
Year: 2018
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The constrained Cramer-Rao bound (CCRB) is a lower bound on the mean-squared-error (MSE) of estimators that satisfy some unbiasedness conditions. Although the CCRB unbiasedness conditions are satisfied asymptotically by the constrained maximum likelihood (CML) estimator, in the non-asymptotic region these conditions are usually too strict and the commonly-used estimators, such as the CML estimator, do not satisfy them. Therefore, the CCRB may not be a lower bound on the MSE matrix of such estimators. In this paper, we propose a new definition for unbiasedness under constraints, denoted by C-unbiasedness, which is based on using Lehmann-unbiasedness with a weighted MSE (WMSE) risk and taking into account the parametric constraints. In addition to C-unbiasedness, a Cramer-Rao-type bound on the WMSE of C-unbiased estimators, denoted as Lehmann-unbiased CCRB (LU-CCRB), is derived. This bound is a scalar bound that depends on the chosen weighted combination of estimation errors. It is shown that C-unbiasedness is less restrictive than the CCRB unbiasedness conditions. Thus, the set of estimators that satisfy the CCRB unbiasedness conditions is a subset of the set of C-unbiased estimators and the proposed LU-CCRB may be an informative lower bound in cases where the corresponding CCRB is not. In the simulations, we examine linear and nonlinear estimation problems under nonlinear constraints in which the CML estimator is shown to be C-unbiased and the LU-CCRB is an informative lower bound on the WMSE, while the corresponding CCRB on the WMSE is not a lower bound and is not informative in the non-asymptotic region.
description: 17 pages, 8 figures
Gluon Plasma Frequency -- the Next-to-Leading Order Term
Creators: name: Schulz, Hermann
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The longitudinal-electric oscillations of the hot gluon system are studied beyond the well known leading order term at high temperature $T$ and small coupling $g$. The coefficient $η$ in $ω^2 = m^2 \, (1+ η\, g \wu N \, )$ is calculated, where \hbox{$ω\equiv ω(\vc q =0)$} is the long-wavelength limit of the frequency spectrum, $N$ the number of colours and $m^2=g^2 N T^2/9$. In the course of this, for the real part of the gluon self-energy, the Braaten-Pisarski resummation programme is found to work well in all details. The coefficient $η$ is explicitly seen to be gauge independent within the class of covariant gauges. Infrared singularities cancel as well as collinear singularities in the two-loop diagrams with both inner momenta hard. However, as it turns out, none of these two-loop contributions reaches the relative order $O(g)$ under study. The minus sign in our numerical result $\; η= -.18 \; $ is in accord with the intuitive picture that the studied mode might soften with increasing coupling (lower temperature) until a phase transition is reached at zero-frequency. The minus sign thus exhibits the 'glue' effect for the first time in a dynamical quantity of hot QCD.
description: 41 pages, LaTeX, ITP-UH 8/93 and DESY 93-080
Anisotropic Vortex Squeezing in Synthetic Rashba Superconductors: A Manifestation of Lifshitz Invariants
Creators: name: Fuchs, L.
name: Kochan, Denis
name: Schmidt, J.
name: Hüttner, N.
name: Baumgartner, C.
name: Reinhardt, S.
name: Gronin, S.
name: Gardner, G. C.
name: Lindemann, T.
name: Manfra, M. J.
name: Strunk, Christoph
name: Paradiso, N.
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: MAGNETIC-PROPERTIES
subject: 530 Physik

description: Epitaxial superconductor-semiconductor heterostructures combine superconductivity with strong spin-orbit interaction resulting in synthetic Rashba superconductors. The theoretical description of such superconductors involves Lifshitz invariants that are predicted to feature numerous exotic effects with so far sparse experimental evidence. Using a new observable-vortex inductance-we investigate the pinning properties of epitaxial Al/InAs-based heterostructures. We find a pronounced decrease of the vortex inductance with increasing in-plane field which corresponds to a counterintuitive increase of the pinning force. When rotating the in-plane component of the field with respect to the current direction, the pinning interaction turns out to be highly anisotropic. We analytically demonstrate that both the pinning enhancement and its anisotropy are consequences of the presence of Lifshitz invariant terms in the Ginzburg-Landau free energy. Hence, our experiment provides access to a fundamental property of Rashba superconductors and offers an entirely new approach to vortex manipulation.
Solution of constrained generalized transportation problems using the pivot and probe algorithm
Creators: name: Awanti P. Sethi
name: Thompson, Gerald Luther
name: Carnegie Mellon UniversityDesign Research Center
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Abstract: "In this paper we use a specialized version of our pivot and probe algorithm to solve generalized transportation problems with side constraints. The dual of an m x n generalized transportation problem with t side constraints is a linear program with m + n + t variables and up to m x n constraints. We solve the dual problem using the probe operation to select only the most important constraints to consider. We present computational experience on problems of sizes up to 180 x 180, having various degrees of density and having as many as 10 side constraints. It was found that for a given size and density, problems become harder to solve as the number of side constraints increases. Also, for a fixed number of side constraints, the solution difficulty increases with size and density. We found that our method was able to solve problems of the quoted sizes relatively quickly, with relatively few pivots, and without using basis reinversion."
Trivariate Spline Representations for Computer Aided Design and Additive Manufacturing
Creators: name: Dokken, Tor
name: Skytt, Vibeke
name: Barrowclough, Oliver
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D17, 65D07, 65M60, 65M99

description: Digital representations targeting design and simulation for Additive Manufacturing (AM) are addressed from the perspective of Computer Aided Geometric Design. We discuss the feasibility for multi-material AM for B-rep based CAD, STL, sculptured triangles as well as trimmed and block-structured trivariate locally refined spline representations. The trivariate spline representations support Isogeometric Analysis (IGA), and topology structures supporting these for CAD, IGA and AM are outlined. The ideas of (Truncated) Hierarchical B-splines, T-splines and LR B-splines are outlined and the approaches are compared. An example from the EC H2020 Factories of the Future Research and Innovation Actions CAxMan illustrates both trimmed and block-structured spline representations for IGA and AM.
description: 30 pages, 14 figures. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 680448
Külmumuse esmase ravi võimalused ja ravisoovitused
Creators: name: Kaha, Tiiu
Publisher: name: Eesti Arst
Year: 2019

description: Külmumus on lokaalne kudede kahjustus, mis on tekkinud pikaaegsel viibimisel madalate temperatuuride käes. Külmumuse patogeneesis etendavad olulist osa rakkude otsene külmumine ning kudede isheemia, mis süveneb pärast kahjustunud kudede ülessoojendamist. Külmumuse etiopatogeneesi tundmine ja kliiniline uurimine võimaldavad hinnata ja prognoosida kudede kahjustuse ulatust. Külmumuse esmase ravi kuldstandard on kudede kiire ülessoojendamine koos adekvaatse valutustamisega. Varane trombolüüs aitab lõhustada trombe väikestes veresoontes, parandades perfusiooni kahjustunud kudedes. Vasodilataatorid aitavad vältida mikrotrombide teket ja vältida mikroveresoonte tromboseerumist. Artiklis on käsitletud uusi diagnostika- ja ravivõtteid, mis võimaldavad parandada ravitulemusi ning vältida amputatsioone. Kuna Eestis puudub külmumuse ravijuhis ning ühtsed seisukohad külmumuse käsitlusel, võiks artikkel olla tõenduspõhiseks ravisoovituseks.
description: Eesti Arst, 2019: November
Multimedia Forensics Using Metadata
Creators: name: Xiang, Ziyue
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 460404
subject: Digital forensics
classificationCode: 460308
subject: Pattern recognition
classificationCode: 460305
subject: Image and video coding
classificationCode: 460309
subject: Video processing
classificationCode: 460306
subject: Image processing
classificationCode: 460302
subject: Audio processing
classificationCode: 461103
subject: Deep learning
classificationCode: 460304
subject: Computer vision
classificationCode: 461301
subject: Coding, information theory and compression

description: The rapid development of machine learning techniques makes it possible to manipulate or synthesize video and audio information while introducing nearly indetectable artifacts. Most media forensics methods analyze the high-level data (e.g., pixels from videos, temporal signals from audios) decoded from compressed media data. Since media manipulation or synthesis methods usually aim to improve the quality of such high-level data directly, acquiring forensic evidence from these data has become increasingly challenging. In this work, we focus on media forensics techniques using the metadata in media formats, which includes container metadata and coding parameters in the encoded bitstream. Since many media manipulation and synthesis methods do not attempt to hide metadata traces, it is possible to use them for forensics tasks. First, we present a video forensics technique using metadata embedded in MP4/MOV video containers. Our proposed method achieved high performance in video manipulation detection, source device attribution, social media attribution, and manipulation tool identification on publicly available datasets. Second, we present a transformer neural network based MP3 audio forensics technique using low-level codec information. Our proposed method can localize multiple compressed segments in MP3 files. The localization accuracy of our proposed method is higher compared to other methods. Third, we present an H.264-based video device matching method. This method can determine if the two video sequences are captured by the same device even if the method has never encountered the device. Our proposed method achieved good performance in a three-fold cross validation scheme on a publicly available video forensics dataset containing 35 devices. Fourth, we present a Graph Neural Network (GNN) based approach for the analysis of MP4/MOV metadata trees. The proposed method is trained using Self-Supervised Learning (SSL), which increased the robustness of the proposed method and makes it capable of handling missing/unseen data. Fifth, we present an efficient approach to compute the spectrogram feature with MP3 compressed audio signals. The proposed approach decreases the complexity of speech feature computation by ~77.6% and saves ~37.87% of MP3 decoding time. The resulting spectrogram features lead to higher synthetic speech detection performance.
High multipole transitions in NIXS: valence and hybridization in 4f systems
Creators: name: Gordon, R. A.
name: Seidler, G. T.
name: Fister, T. T.
name: Haverkort, M. W.
name: Sawatzky, G. A.
name: Tanaka, A.
name: Sham, T. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Momentum-transfer (q) dependent non-resonant inelastic x-ray scattering measurements were made at the N4,5 edges for several rare earth compounds. With increasing q, giant dipole resonances diminish, to be replaced by strong multiplet lines at lower energy transfer. These multiplets result from two different orders of multipole scattering and are distinct for systems with simple 4f^0 and 4f^1 initial states. A many-body theoretical treatment of the multiplets agrees well with the experimental data on ionic La and Ce phosphate reference compounds. Comparing measurements on CeO2 and CeRh3 to the theory and the phosphates indicates sensitivity to hybridization as observed by a broadening of 4f^0-related multiplet features. We expect such strong, nondipole features to be generic for NIXS from f-electron systems.
Lapseea arteriaalne isheemiline insult
Creators: name: Pajula, Kärt
Publisher: name: Eesti Arst
Year: 2019

description: Lapseea arteriaalset isheemilist insulti iseloomustab äkki tekkinud neuroloogiline defitsiit mingi kindla ajuarteri varustusalal, seda lastel alates 29. elupäevast kuni 18 aasta vanuseni. See haigus erineb oluliselt täiskasvanute ajuinfarktist, see on harva esinev haigus, mille ilmingud on varieeruvad, ning seetõttu võib diagnoos hilineda. Lapseea arteriaalse insheemilise insuldi haigestumus on 2–6 juhtu 100 000 elussünni kohta. Kaugtagajärjena kujuneb peaaegu pooltel juhtudel püsiv neuroloogiline kahjustus. Vaatamata edusammudele lapseea arteriaalse isheemilise insuldi ravis on siiani vastukäivaid seisukohti, milline peaks olema õigeim ravitaktika. Praeguseni põhinevad ravisoovitused täiskasvanute ravijuhendite ekstrapoleerimisel lastele. Artiklis on antud ülevaade lapseea arteriaalse isheemilise insuldi levimusest, sümptomitest, riskiteguritest ja ravist.
description: Eesti Arst, 2019: November
The Running Coupling from SU(3) Gauge Theory
Creators: name: Bali, G. S.
name: Schilling, K.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present high precision results on the static quark-antiquark-potential on 32^4 and smaller lattices, using the standard Wilson action at BETA = 6.0, 6.2, 6.4, and 6.8 on the Connection Machine CM-2. Within our statistical errors (1%) we did not observe any finite size effects affecting the potential values, on varying the spatial lattice extent from 0.9 fm up to 3.3 fm. We find violations of asymptotic scaling in the bare coupling up to BETA = 6.8. We demonstrate that scaling violations on the string tension can be considerably reduced by introducing effective coupling schemes, which allow for a safer extrapolation of LAMBDA_Lattice to its continuum value. We are also able to see and to quantify the running of the coupling from the interquark force. From this we extract the ratio \sqrt{SIGMA}/LAMBDA_L. Both methods yield consistent values for the LAMBDA-parameter: LAMBDA_MSbar = 0.558(-0.007+0.017)\sqrt{SIGMA} = 246(-3+7) MeV.
description: (Talk G. Bali at Lattice 92, Amsterdam), 4 Pages, 4 Postscript figures, LaTeX with espcrc2, and epsf style files
Hirzebruch surfaces in a one-parameter family
Creators: name: Battaglia, Fiammetta
name: Prato, Elisa
name: Zaffran, Dan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32L05 (Primary) 53D20, 14M25 (Secondary)

description: We introduce a family of spaces, parametrized by positive real numbers, that includes all of the Hirzebruch surfaces. Each space is viewed from two distinct perspectives. First, as a leaf space of a compact, complex, foliated manifold, following [BZ1]. Second, as a symplectic cut of the manifold $\mathbb{C}\times S^2$ in a possibly nonrational direction, following [BP2].
description: 15 pages, 10 figures, final version, to appear in Boll. Unione Mat. Ital
Software Security and Liability
Creators: name: Byung-Cho  Kim
name: Chen, Pei-Yu
name: Tridas Mukhopadhyay
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: The abundance of flawed software has been identified as the main cause of the poor security of computer networks since major viruses and worms have been exploiting the vulnerabilities of such software. As an incentive mechanism for software security quality improvement, software liability has been intensely discussed among computer scientists, jurists, and policy makers for a long time. In this paper, we examine how the liability mechanism affects a monopolistic software vendor’s decision on security quality and market coverage. We then analyze the welfare implications of the liability mechanism. We find that high marginal willingness to pay for the software leads to full market coverage without liability. When liability is imposed, full market coverage obtains only if the expected loss is bounded. We also find that security quality is underprovided without liability while socially optimal level is offered with liability. Interestingly, our results indicate that imposing liability may discourage the monopolist from improving security while it leads to higher consumer surplus. When the marginal willingness to pay is relatively low, the liability mechanism brings higher social surplus. In the presence of information asymmetry between the vendor and the customers, the liability mechanism yields higher security quality and higher consumer surplus.
Development of Functional Genomics Tools in Wheat
Creators: name: Krasileva, Ksenia
name: Dubcovsky, Jorge
Publisher: name: Zenodo
Year: 2021
Subjects: wheat
genomics

description: This is a postdoctoral AFRI-NIFA proposal (awarded, 2012-2014) which was prepared and submitted by Ksenia Krasileva and supported her postdoctoral work in Jorge Dubcovsky's laboratory at the University of California Davis.
Combining a PagP fusion protein system with nickel ion-catalyzed cleavage to produce intrinsically disordered proteins in E. coli
Creators: Zahran, Somaya
Pan, Jonathan S.
Liu, Philip B.
Hwang, Peter M.
Publisher: name: University of Alberta Library
Year: 2015

Many proteins contain intrinsically disordered regions that are highly solvent-exposed and susceptible to post-translational modifications. Studying these protein segments is critical to understanding their physiologic regulation, but proteolytic degradation can make them difficult to express and purify. We have designed a new protein expression vector that fuses the target protein to the N-terminus of the integral membrane protein, PagP. The two proteins are connected by a short linker containing the sequence SRHW, previously shown to be optimal for nickel ion-catalyzed cleavage. The methodology is demonstrated for an intrinsically disordered segment of cardiac troponin I. cTnI[135-209]-SRHW-PagP-His6 fusion protein was overexpressed in E. coli, accumulating in insoluble inclusion bodies. The protein was solubilized, purified using nickel affinity chromatography, and then cleaved with 0.5 mM NiSO4 at pH 9.0 and 50°C, all in 6 M guanidine-HCl. Nickel ion-catalyzed peptide bond hydrolysis is an effective chemical cleavage technique under denaturing conditions that preclude the use of proteases. Moreover, nickel-catalyzed cleavage is more specific than the most commonly used agent, cyanogen bromide, which cleaves C-terminal to methionine residues. We were able to produce 15 mg of purified cTnI[135-209] from 1 L of M9 minimal media using this protocol. The methodology is more generally applicable to the production of intrinsically disordered protein segments.
Origin of Difference between $\overline{d}$ and $\overline{u}$ Partons in the Nucleon
Creators: name: Liu, Keh-Fei
name: Dong, Shao-Jing
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using the Euclidean path-integral formulation for the hadronic tensor, we show that the violation of the Gottfried sum rule does not come from the disconnected quark-loop insertion. Rather, it comes from the connected (quark line) insertion involving quarks propagating in the backward time direction. We demonstrate this by studying sum rules in terms of the scalar and axial- vector matrix elements in lattice gauge calculations. The effects of eliminating backward time propagation are presented.
description: 8 Pages, 5 ps figures included in part 2, UK/93-02
Search for Low Mass Exotic mesonic structures. Part II: attempts to understand the experimental results
Creators: name: Tatischeff, B.
name: Tomasi-Gustafsson, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Our previous paper, part I of the same study, shows the different experimental spectra used to conclude on the genuine existence of narrow, weakly excited mesonic structures, having masses below and a little above the pion (M=139.56 MeV) mass. This work \cite{previous} was instigated by the observation, in the $Σ^{+}$ disintegration: $Σ^{+}\to$pP$^{0}$, P$^{0}\toμ^{-}μ^{+}$ \cite{park}, of a narrow range of dimuon masses. The authors conclude on the existence of a neutral intermediate state P$_{0}$, with a mass M=214.3 MeV $\pm$ 0.5 MeV. We present here some attempts to understand the possible nature of the structures observed in part I.
description: 3 pages, 4 figures. Follows 0710.1796. Both replace arXiv:0707.1261 [nucl-ex]
Multicritical Points in a Lattice Yukawa Model with the Wilson-Yukawa Coupling
Creators: name: Ebihara, T.
name: Kondo, K. -I.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: For a lattice regularized chiral-invariant $SU(2)_L\times~SU(2)_R$ fermion-scalar model with a Yukawa coupling $y$ and a Wilson-Yukawa coupling $w$, we investigate the phase structure and in particular show the existence of the multicritical line, in the strong Yukawa and/or Wilson Yukawa coupling region, at which four phases meet. The result is in good agreement with the Monte Carlo simulation. This analytical result is derived from the effective scalar model obtained by integrating out the fermion field where the action is explicitly obtained from the hopping parameter expansion up to next-to-leading order. For estimates on the correlation function of the scalar field we apply the mean-field method.
description: 11 pages (TeX), +3 pages with postscript figures, CHIBA-EP-61-REV