cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ginzburg - Landau expansion in strongly disordered attractive Anderson - Hubbard model
Creators: name: Kuchinskii, E. Z.
name: Kuleeva, N. A.
name: Sadovskii, M. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We have studied disordering effects on the coefficients of Ginzburg - Landau expansion in powers of superconducting order - parameter in attractive Anderson - Hubbard model within the generalized $DMFT+Σ$ approximation. We consider the wide region of attractive potentials $U$ from the weak coupling region, where superconductivity is described by BCS model, to the strong coupling region, where superconducting transition is related with Bose - Einstein condensation (BEC) of compact Cooper pairs formed at temperatures essentially larger than the temperature of superconducting transition, and the wide range of disorder - from weak to strong, where the system is in the vicinity of Anderson transition. In case of semi - elliptic bare density of states disorder influence upon the coefficients $A$ and $B$ before the square and the fourth power of the order - parameter is universal for any value of electron correlation and is related only to the general disorder widening of the bare band (generalized Anderson theorem). Such universality is absent for the gradient term expansion coefficient $C$. In the usual theory of "dirty" superconductors the $C$ coefficient drops with the growth of disorder. In the limit of strong disorder in BCS limit the coefficient $C$ is very sensitive to the effects of Anderson localization, which lead to its further drop with disorder growth up to the region of Anderson insulator. In the region of BCS - BEC crossover and in BEC limit the coefficient $C$ and all related physical properties are weakly dependent on disorder. In particular, this leads to relatively weak disorder dependence of both penetration depth and coherence lengths, as well as of related slope of the upper critical magnetic field at superconducting transition, in the region of very strong coupling.
description: 25 pages, 11 figures. arXiv admin note: text overlap with arXiv:1606.05125
Intra Abdominal Mass in Female Young Patient. The Challenge
Creators: name: Nodar SR
name: Yllán VG
name: Solis O
name: Boccara G
Publisher: name: figshare
Year: 2017
Subjects: subject: 170104 Forensic Psychology
subject: FOS: Other medical sciences

description: The abdominal region of the body is extremely complex because of the organs and systems it contains all of them generating abdominal masses, the discovery of which often poses significant diagnostic difficulties. A previously healthy, 21-yearold woman presented to the hospital with a severe abdominal pain and an abdominal mass, approximately 10cm in size, raising a strong suspicion of a malignant tumor in the upper abdomen. She had history of abdominal cesarean. The patient elected to undergo exploratory surgery.
A miniature scanning sun photometer for vertical profiles and mobile platforms
Creators: name: Murphy, D. M.
name: Telg, H.
name: Eck, Thomas
name: Rodriguez, J.
name: Stalin, S. E.
name: Bates, T. S.
Publisher: name: Taylor & Francis
Year: 2015

description: A miniature sun photometer has been developed that makes continuous almucantar scans to measure solar irradiance and sky radiance in four wavelength bands set by interference filters. It has a well-defined field of view and can rapidly compensate for a tilting platform. It weighs less than 400 g and has an average power consumption of less than 5 W. Together, these characteristics make it suitable for vertical profiles using small balloons or unmanned aircraft systems (UASs). Preliminary results are presented showing measurements of optical depth and the phase function of scattered sunlight. An optical depth of about 0.03 in a clean boundary layer was measurable with an accuracy of better than 0.01.
A Framework for the Upscaling of the Electrical Conductivity in the Quasi-static Maxwell's Equations
Creators: name: Caudillo-Mata, Luz Angelica
name: Haber, Eldad
name: Heagy, Lindsey J.
name: Schwarzbach, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Geophysics (physics.geo-ph)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 78M40, 35K55, 65N08, 78A25, 86-08

description: Electromagnetic simulations of complex geologic settings are computationally expensive. One reason for this is the fact that a fine mesh is required to accurately discretize the electrical conductivity model of a given setting. This conductivity model may vary over several orders of magnitude and these variations can occur over a large range of length scales. Using a very fine mesh for the discretization of this setting leads to the necessity to solve a large system of equations that is often difficult to deal with. To keep the simulations computationally tractable, coarse meshes are often employed for the discretization of the model. Such coarse meshes typically fail to capture the fine-scale variations in the conductivity model resulting in inaccuracies in the predicted data. In this work, we introduce a framework for constructing a coarse-mesh or upscaled conductivity model based on a prescribed fine-mesh model. Rather than using analytical expressions, we opt to pose upscaling as a parameter estimation problem. By solving an optimization problem, we obtain a coarse-mesh conductivity model. The optimization criterion can be tailored to the survey setting in order to produce coarse models that accurately reproduce the predicted data generated on the fine mesh. This allows us to upscale arbitrary conductivity structures, as well as to better understand the meaning of the upscaled quantity. We use 1D and 3D examples to demonstrate that the proposed framework is able to emulate the behavior of the heterogeneity in the fine-mesh conductivity model, and to produce an accurate description of the desired predicted data obtained by using a coarse mesh in the simulation process.
description: 27 pages, 13 figures
A systematic investigation of thermal conductivities of transition metal dichalcogenides
Creators: name: Zhang, Zhongwei
name: Xie, Yuee
name: Ouyang, Yulou
name: Chen, Yuanping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermal conductivities of MoS2 and WS2 have been reported by some experimental and theoretical studies, however, the results are different from each other. Here, thermal transport properties of twelve types of single layer transition metal dichalcogenides (TMDs) MX2 (M = Cr, Mo, W; X = O, S, Se, Te) are investigated systematically, by solving Boltzmann transport equation based on first-principle calculations. After accurate considering the size effect and boundary scattering, we find that our calculations can fit the former experimental results well. Moreover, diverse transport properties in TMDs are revealed, and an abnormal dependence of thermal conductivity on atomic mass is observed. In most MX2 structures, the thermal conductivities decrease with the increase of mass of atom M or X. However, the thermal conductivities of sulfides MS2 and selenides MSe2 increase as M changes from Cr to Mo to W, which is contradictory to our traditional understanding. A detailed calculation indicates that the abnormal trend is originated from the rapid increase of phonon relaxation time. Our studies provide important data and effective mechanism for thermal transport in TMDs.
description: In International Journal of Heat and Mass Transfer 2016
Additional file 1 of Isolation, characterization and application of theophylline-degrading Aspergillus fungi
Creators: name: Zhou, Binxing
name: Ma, Cunqiang
name: Xia, Tao
name: Li, Xiaohong
name: Zheng, Chengqin
name: Wu, Tingting
name: Liu, Xiaohui
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Colony characteristics (a, b) and conidial structure (c, d) of strain PT-6. (a): Front on PDA medium at 25 °C for 7 days. (b): Back on PDA medium at 25 °C for 7 days. (c): Mature conidia heads, conidia stems and antipodal cells (200 ×). (d): Hyohae, conidia stems and conidiums (400 ×). Figure S2. Colony characteristics (a, b) and conidial structure (c, d) of strain PT-7. (a): Front on PDA medium at 25 °C for 7 days. (b): Back on PDA medium at 25 °C for 7 days. (c): Conidia heads(200 ×). (d): Conidia stems, sterigmas and conidiums (400 ×). Figure S3. The received sequences of strain PT-6 (502 bp ITS sequence and 694 bp calmodulin sequence). Figure S4. The received sequences of strain PT-7 (532 bp ITS sequence,476 bp β-tubulin sequence and 715 bp calmodulin sequence). Figure S5. Neighbor-Joining consensus trees of (a) Aspergillus ustus PT-6 and (b) Aspergillus tamarii PT-7. Identification was based on ITS and calmodulin genes for A. ustus PT-6, and ITS, β-tubulin and calmodulin genes for A. tamarii PT-7. The numbers over branches represent bootstrap confidence values (%) based on 1000 replicates. The scale bar denotes the nucleotide substitution per sequence.
The second cohomology groups of nilpotent orbits in classical Lie algebras
Creators: name: Biswas, Indranil
name: Chatterjee, Pralay
name: Maity, Chandan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57T15, 17B08

description: The second de Rham cohomology groups of nilpotent orbits in non-compact real forms of classical complex simple Lie algebras are explicitly computed. Furthermore, the first de Rham cohomology groups of nilpotent orbits in non-compact classical simple Lie algebras are computed; they are proven to be zero for nilpotent orbits in all the complex simple Lie algebras. A key component in these computations is a description of the second and first cohomology groups of homogeneous spaces of general connected Lie groups which is obtained here. This description, which generalizes a previous theorem of the first two authors, may be of independent interest.
description: 65 pages, Final version
Many-particle correlations and Coulomb effects on temperatures from fragment momentum fluctuations
Creators: name: Souza, S. R.
name: Tsang, M. B.
name: Donangelo, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate correlations in the fragment momentum distribution due to the propagation of fragments under the influence of their mutual Coulomb field, after the breakup of an excited nuclear source.The magnitude of the effects on the nuclear temperatures obtained from such distributions is estimated with the help of a simple approach in which a charged fragment interacts with a homogeneous charged sphere. The resuslts are used to correct the temperatures obtained from the asymptotic momentum distributions of fragments produced by a Monte-Carlo simulation in which the system's configuration at breakup is provided by the canonical version of the Statistical Multifragmentation Model. In a separate calculation, the dynamics of this many-particle charged system is followed in a molecular dynamics calculation until the fragments are far away from the breakup volume. The results suggest that, although the magnitude of the corrections is similar in both models, many-particle correlations present in the second approach are non-negligible and should be taken into account in order to minimize ambiguities in such studies.
description: 7 pages, 4 figures
Veterinary Expert Opinions on Conflicts Involving Dogs and Cats in Poland
Creators: name: Babińska I
name: Kusiak D
name: Szarek J
name: A, Lis
name: Gulda D
name: Felsmann MZ
name: Łyko A
name: Maciejewska M
name: Popławski K
name: Szweda M
Publisher: name: figshare
Year: 2017
Subjects: subject: 170104 Forensic Psychology
subject: FOS: Other medical sciences

description: Veterinary experts witnesses issue opinions contributing to improved detectability of crimes in which cats and dogs are victims. The aim of this study was to analyse veterinary expert opinions on conflict situations concerning cats and dogs in regard to the types of entities which commissioned such opinions, the structure of entities liable to criminal proceedings, the reasons for which criminal proceedings were initiated and the experts’ conclusions. Proceedings were initiated by law enforcement bodies mainly because of violations of the animal protection act; law enforcement bodies accounted for the majority of the entities commissioning such opinions. Smaller numbers of opinions were commissioned by individuals and single opinions were commissioned by an underwriter for professional liability, civil courts, insurance agencies and animal welfare associations. Criminal proceedings were usually initiated against individuals and veterinary surgeons. Cruelty to dogs and cats were found to be the main cause of conflict situations. Veterinary malpractice or a fraud in sale/purchase transactions were identified as the cause in a smaller percentage of cases. The autopsies of cats and dogs performed for such opinions showed that the deaths had been caused mainly by physical injuries and cardiopulmonary insufficiency. The division of the investigated period into two decades demonstrated that in 2006-2015, as compared with the data recorded in the previous decade, there was a statistically significant increase in the number of animal deaths due to hitting/beating and shooting and a decrease in fatal cases resulting from cardio-respiratory failure, poisoning and infectious diseases.
Sample of Cataclysmic Variables from 400d X-ray Survey
Creators: name: Burenin, R. A.
name: Revnivtsev, M. G.
name: Tkachenko, A. Yu.
name: Vorobyev, V. S.
name: Semena, A. N.
name: Meshcheryakov, A. V.
name: Dodonov, S. N.
name: Eselevitch, M. V.
name: Pavlinsky, M. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a sample of cataclysmic variables (CVs) identified among the X-ray sources from the 400 square degree X-ray survey based on ROSAT pointing data (400d). The procedure of the CV selection among the X-ray sources using additional optical and infrared data from Sloan Digital Sky Survey and WISE survey is described. The results of the optical observations of the selected objects carried out mainly with the Russian-Turkish 1.5-m telescope (RTT-150) and the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (BTA) are presented. Some observations have also been performed with the Sayan Observatory 1.6-m AZT-33IK telescope. Currently we selected eight CVs, four of which were found for the first time in our work. Based on this sample, we have obtained preliminary constraints on the CV X-ray luminosity function in the solar neighborhood in the low luminosity range, L_X ~ 10^29-10^30 erg s^-1 (0.5-2 keV). We show that the logarithmic slope of the CV X-ray luminosity function in this luminosity range is less steep than at L_X > 10^31 erg s^-1. From our CV X-ray luminosity function estimates it follows that few thousand CVs will be detected in theSpectrum-Roentgen-Gamma (SRG) observatory all-sky X-ray survey at high Galactic latitudes, which will allow to obtain much more accurate measurements of CV X-ray luminosity function in the luminosity range L_X < 10^30-10^31 erg s^-1.
description: published in Astronomy Letters (Pis'ma v Astronomicheskij Zhurnal)
Summation of Fourier series on the infinite dimensional torus
Creators: name: Fufaev, Denis
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The conditions for convergence of square and rectangular Fejer means of functions on the infinite dimensional torus were obtained, also a generalization of the results for the case of abstract measure spaces was formulated.
description: In Russian
Alle origini del copyright e del diritto d'autore: spunti in chiave di diritto e tecnologia
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2010
Subjects: Diritto d'autore
Storia del diritto
Diritto e tecnologia
Privilegio librario
Diritto di esclusiva

description: Nonostante le molte voci critiche alzatesi dalla dottrina giuridica, negli ultimi trent’anni dominati dalla rivoluzione digitale i legislatori occidentali hanno costantemente rafforzato il copyright/droit d’auteur, riducendo significativamente il pubblico dominio. Le leggi sul diritto d’autore si sono trasformate in documenti lunghi, complessi, enigmatici e pieni di sanzioni criminali. In questo scenario, guardare alle origini copyright/droit d’auteur nella prospettiva di “diritto e tecnologia” rappresenta un esercizio fondamentale per comprendere la necessità di limitare il potere di controllo esclusivo dell’informazione e preservare ampia spazi di libero accesso da parte del pubblico.
description: Trento LawTech Research Paper nr. 2
The UMCD Dataset
Creators: name: Avola, Danilo
name: Foresti, Gian Luca
name: Martinel, Niki
name: Pannone, Daniele
name: Piciarelli, Claudio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In recent years, the technological improvements of low-cost small-scale Unmanned Aerial Vehicles (UAVs) are promoting an ever-increasing use of them in different tasks. In particular, the use of small-scale UAVs is useful in all these low-altitude tasks in which common UAVs cannot be adopted, such as recurrent comprehensive view of wide environments, frequent monitoring of military areas, real-time classification of static and moving entities (e.g., people, cars, etc.). These tasks can be supported by mosaicking and change detection algorithms achieved at low-altitude. Currently, public datasets for testing these algorithms are not available. This paper presents the UMCD dataset, the first collection of geo-referenced video sequences acquired at low-altitude for mosaicking and change detection purposes. Five reference scenarios are also reported.
description: 3 pages, 5 figures
Statures of Prehistoric Humans from Fossil Femora and Humeri
Creators: name: Sankhyan AR
Publisher: name: figshare
Year: 2017
Subjects: subject: 170104 Forensic Psychology
subject: FOS: Other medical sciences

description: The author has recently discovered six femoral and three humeral fossil fragments of the Stone Age humans from Central Narmada valley. The present study deals with the stature estimations of those prehistoric men by using the segment ratios and the obtained lengths of the fossil femora and the Humeri. The study is significant in forensic studies as well as in palaeoanthropology for understanding the hitherto unknown statures of prehistoric men and their biological adaptations and evolution in South Asia. The results show that very short-statured early humans inhabited the central Narmada valley between 300-70 Kya. This, couple with previous studies suggest that the short-bodied Narmada hominins constituted the ancestral stock for the subsequent similar late Pleistocene populations of South Asia, like the Munda and the pygmy of Andaman Islands, supported by the recent genomic studies that a common ancestor lived on Indian mainland around 60,000 years B.P., and these populations got differentiated about 25,000 years ago.
Understanding the biology of transforming growth factor-β in colorectal cancers
Creators: name: Cheruku, Harish Reddy
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Colorectal cancer (CRC affects millions of people every year globally. Abnormal cells utilise several mutated proteins and perturbed pathways to progress from a benign tumour to malignant cancer. Expression of proteins such as uPAR, integrin β6 and TGFβ have been extensively implicated by us and others in CRC. The primary aim of this thesis was to contribute additional knowledge regarding the role of TGFβ in CRC through investigation of the proposed hypothetical uPAR·αvβ6·TGFβ1 interactome. This was achieved by using six CRC cell lines as model systems where expression levels of two known activator systems of TGFβ, namely integrin β6 (SW480Mock, SW480β6OE, HT29Mock, HT29β6AS) and the uPA protease receptor uPAR (HCT116WT and HT29uPARAS) have been artificially expressed or down regulated. The changes in these model systems following active TGFβ1 treatment were investigated using state-of-the-art proteomics and a cell signalling assay (i.e., AlphaScreen® SureFire® Assay) technologies in conjunction with sophisticated bioinformatics. The cells expressing β6 (SW480β6OE, HT29Mock, HT29β6AS) exhibited increased proliferation, invasion and wound healing upon treatment with TGFβ1. The cells with higher uPAR expression did not respond to (HCT116WT) TGFβ treatments. These results determined that malignancy was attained in a TGFβ-dependent manner when β6 was expressed or in a TGFβ-independent manner when uPAR was expressed. Additionally, the proteomic data presented in this thesis identified several perturbed proteins and biomolecular pathways that could be associated with CRC and has given important clues to understanding the role of TGFβ and the proposed hypothetical uPAR•αvβ6•TGFβ1 interactome. Additionally, an Olink Proseek study using Dukes’ stage A-D CRC patient plasma samples (1μL of plasma) identified CEA, IL-8 and prolactin were determined to differentiate unaffected controls from non-malignant (Dukes’ A + B) and malignant (Dukes’ C + D) stages and were published as potential plasma Dukes’-stage CRC biomarkers. This thesis has demonstrated the immense power of high-throughput modern proteomic and multiplexing technologies to gain insights into the TGFβ associated CRC pathogenesis at detailed molecular level and to identify avenues for disease biomarker exploration.
Additional file 2 of Isolation, characterization and application of theophylline-degrading Aspergillus fungi
Creators: name: Zhou, Binxing
name: Ma, Cunqiang
name: Xia, Tao
name: Li, Xiaohong
name: Zheng, Chengqin
name: Wu, Tingting
name: Liu, Xiaohui
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 2: Table S1. Comparisons of fungal dry mass (mg) of each isolate in different theophylline liquid mediums after cultivation at 30 °C for 5 days. TLM-S = theophylline liquid medium with sucrose as carbon source; TLM-D = theophylline liquid medium with dextrose with sucrose as carbon source; TLM-N = theophylline liquid medium with ammonium sulphate as nitrogen source; TLM-SN = theophylline liquid medium with sucrose and ammonium sulphate as carbon and nitrogen sources, respectively. All data were present by mean value ± SD of three replications. The lowercase letters indicated a significant difference at p < 0.05 levels and the uppercase letters indicated a highly significant difference at p < 0.01 levels by using one-way ANOVA of SPSS 20.0. The different letters show significant differences of each isolate between different theophylline liquid mediums.
On Poisson approximations for the Ewens sampling formula when the mutation parameter grows with the sample size
Creators: name: Tsukuda, Koji
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The Ewens sampling formula was firstly introduced in the context of population genetics by Warren John Ewens in 1972, and has appeared in a lot of other scientific fields. There are abundant approximation results associated with the Ewens sampling formula especially when one of the parameters, the sample size $n$ or the mutation parameter $θ$ which denotes the scaled mutation rate, tends to infinity while the other is fixed. By contrast, the case that $θ$ grows with $n$ has been considered in a relatively small number of works, although this asymptotic setup is also natural. In this paper, when $θ$ grows with $n$, we advance the study concerning the asymptotic properties of the total number of alleles and of the counts of components in the allelic partition assuming the Ewens sampling formula from the viewpoint of Poisson approximations.
description: 38 pages
Fine cophasing of segmented aperture telescopes with ZELDA, a Zernike wavefront sensor in the diffraction-limited regime
Creators: name: Janin-Potiron, Pierre
name: N'Diaye, Mamadou
name: Martinez, Patrice
name: Vigan, Arthur
name: Dohlen, Kjetil
name: Carbillet, Marcel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Segmented aperture telescopes require an alignment procedure with successive steps from coarse alignment to monitoring process in order to provide very high optical quality images for stringent science operations such as exoplanet imaging. The final step, referred to as fine phasing, calls for a high sensitivity wavefront sensing and control system in a diffraction-limited regime to achieve segment alignment with nanometric accuracy. In this context, Zernike wavefront sensors represent promising options for such a calibration. A concept called the Zernike unit for segment phasing (ZEUS) was previously developed for ground-based applications to operate under seeing-limited images. Such a concept is, however, not suitable for fine cophasing with diffraction-limited images. We revisit ZELDA, a Zernike sensor that was developed for the measurement of residual aberrations in exoplanet direct imagers, to measure segment piston, tip, and tilt in the diffraction-limited regime. We introduce a novel analysis scheme of the sensor signal that relies on piston, tip, and tilt estimators for each segment, and provide probabilistic insights to predict the success of a closed-loop correction as a function of the initial wavefront error. The sensor unambiguously and simultaneously retrieves segment piston and tip-tilt misalignment. Our scheme allows for correction of these errors in closed-loop operation down to nearly zero residuals in a few iterations. This sensor also shows low sensitivity to misalignment of its parts and high ability for operation with a relatively bright natural guide star. Our cophasing sensor relies on existing mask technologies that make the concept already available for segmented apertures in future space missions.
description: 11 pages, 10 figures. Accepted for publication in A&A - sec. 13
Two-parton scattering in the high-energy limit
Creators: name: Caron-Huot, Simon
name: Gardi, Einan
name: Vernazza, Leonardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Considering $2\to 2$ gauge-theory scattering with general colour in the high-energy limit, we compute the Regge-cut contribution to three loops through next-to-next-to-leading high-energy logarithms (NNLL) in the signature-odd sector. Our formalism is based on using the non-linear Balitsky-JIMWLK rapidity evolution equation to derive an effective Hamiltonian acting on states with a fixed number of Reggeized gluons. A new effect occurring first at NNLL is mixing between states with $k$ and $k+2$ Reggeized gluons due non-diagonal terms in this Hamiltonian. Our results are consistent with a recent determination of the infrared structure of scattering amplitudes at three loops, as well as a computation of $2\to 2$ gluon scattering in ${\cal N}=4$ super Yang-Mills theory. Combining the latter with our Regge-cut calculation we extract the three-loop Regge trajectory in this theory. Our results open the way to predict high-energy logarithms through NNLL at higher-loop orders.
description: 62 pages, 7 figures
Arthur packets for $p$-adic groups by way of microlocal vanishing cycles of perverse sheaves, with examples
Creators: name: Cunningham, Clifton
name: Fiori, Andrew
name: Moussaoui, Ahmed
name: Mracek, James
name: Xu, Bin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F70, 22E50, 35A27, 32S30

description: In this article we propose a geometric description of Arthur packets for $p$-adic groups using vanishing cycles of perverse sheaves. Our approach is inspired by the 1992 book by Adams, Barbasch and Vogan on the Langlands classification of admissible representations of real groups and follows the direction indicated by Vogan in his 1993 paper on the Langlands correspondence. Using vanishing cycles, we introduce and study a functor from the category of equivariant perverse sheaves on the moduli space of certain Langlands parameters to local systems on the regular part of the conormal bundle for this variety. In this article we establish the main properties of this functor and show that it plays the role of microlocalization in the work of Adams, Barbasch and Vogan. We use this to define ABV-packets for pure rational forms of $p$-adic groups and propose a geometric description of the transfer coefficients that appear in Arthur's main local result in the endoscopic classification of representations. This article includes conjectures modelled on Vogan's work, especially the prediction that Arthur packets are ABV-packets for $p$-adic groups. We gather evidence for these conjectures by verifying them in numerous examples.
description: To appear in Memoirs of the American Mathematical Society, 2021/22
Covariance structure associated with an equality between two general ridge estimators
Creators: name: Tsukuda, Koji
name: Kurata, Hiroshi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In a general linear model, this paper derives a necessary and sufficient condition under which two general ridge estimators coincide with each other. The condition is given as a structure of the dispersion matrix of the error term. Since the class of estimators considered here contains linear unbiased estimators such as the ordinary least squares estimator and the best linear unbiased estimator, our result can be viewed as a generalization of the well-known theorems on the equality between these two estimators, which have been fully studied in the literature. Two related problems are also considered: equality between two residual sums of squares, and classification of dispersion matrices by a perturbation approach.
description: 16 pages. This is a pre-print of an article published in Statistical Papers. The final authenticated version is available online at: https://doi.org/10.1007/s00362-017-0975-8
A numerical method for efficient 3D inversions using Richards equation
Creators: name: Cockett, Rowan
name: Heagy, Lindsey J.
name: Haber, Eldad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Fluid flow in the vadose zone is governed by Richards equation; it is parameterized by hydraulic conductivity, which is a nonlinear function of pressure head. Investigations in the vadose zone typically require characterizing distributed hydraulic properties. Saturation or pressure head data may include direct measurements made from boreholes. Increasingly, proxy measurements from hydrogeophysics are being used to supply more spatially and temporally dense data sets. Inferring hydraulic parameters from such datasets requires the ability to efficiently solve and deterministically optimize the nonlinear time domain Richards equation. This is particularly important as the number of parameters to be estimated in a vadose zone inversion continues to grow. In this paper, we describe an efficient technique to invert for distributed hydraulic properties in 1D, 2D, and 3D. Our algorithm does not store the Jacobian, but rather computes the product with a vector, which allows the size of the inversion problem to become much larger than methods such as finite difference or automatic differentiation; which are constrained by computation and memory, respectively. We show our algorithm in practice for a 3D inversion of saturated hydraulic conductivity using saturation data through time. The code to run our examples is open source and the algorithm presented allows this inversion process to run on modest computational resources.
description: Computers and Geosciences (2018)
Cotangent Bundles of Partial Flag Varieties and Conormal Varieties of their Schubert Divisors
Creators: name: Lakshmibai, Venkatramani
name: Singh, Rahul
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L35

description: Let $P$ be a parabolic subgroup in $G=SL_n(\mathbf k)$, for $\mathbf k$ an algebraically closed field. We show that there is a $G$-stable closed subvariety of an affine Schubert variety in an affine partial flag variety which is a natural compactification of the cotangent bundle $T^*G/P$. Restricting this identification to the conormal variety $N^*X(w)$ of a Schubert divisor $X(w)$ in $G/P$, we show that there is a compactification of $N^*X(w)$ as an affine Schubert variety. It follows that $N^*X(w)$ is normal, Cohen-Macaulay, and Frobenius split.
description: This is an updated version of arXiv:1612.06773 "Cotangent Bundle to the Flag Variety - II"
Conormal Varieties on the Cominuscule Grassmannian
Creators: name: Singh, Rahul
name: Lakshmibai, Venkatraman
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M15

description: Let $G$ be a simply connected, almost simple group over an algebraically closed field $\mathbf k$, and $P$ a maximal parabolic subgroup corresponding to omitting a cominuscule root. We construct a compactification $ϕ:T^*G/P\rightarrow X(u)$, where $X(u)$ is a Schubert variety corresponding to the loop group $LG$. Let $N^*X(w)\subset T^*G/P$ be the conormal variety of some Schubert variety $X(w)$ in $G/P$; hence we obtain that the closure of $ϕ(N^*X(w))$ in $X(u)$ is a $B$-stable compactification of $N^*X(w)$. We further show that this compactification is a Schubert subvariety of $X(u)$ if and only if $X(w_0w)\subset G/P$ is smooth, where $w_0$ is the longest element in the Weyl group of $G$. This result is applied to compute the conormal fibre at the zero matrix in any determinantal variety.
The electrocaloric effect in BaTiO$_3$ at all three ferroelectric transitions: anisotropy and inverse caloric effects
Creators: name: Marathe, Madhura
name: Renggli, Damian
name: Sanlialp, Mehmet
name: Karabasov, Maksim O.
name: Shvartsman, Vladimir V.
name: Lupascu, Doru C.
name: Grünebohm, Anna
name: Ederer, Claude
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the electrocaloric (EC) effect in bulk BaTiO$_3$ (BTO) using molecular dynamics simulations of a first principles-based effective Hamiltonian, combined with direct measurements of the adiabatic EC temperature change in BTO single crystals. We examine in particular the dependence of the EC effect on the direction of the applied electric field at all three ferroelectric transitions, and we show that the EC response is strongly anisotropic. Most strikingly, an inverse caloric effect, i.e., a temperature increase under field removal, can be observed at both ferroelectric-ferroelectric transitions for certain orientations of the applied field. Using the generalized Clausius-Clapeyron equation, we show that the inverse effect occurs exactly for those cases where the field orientation favors the higher temperature/higher entropy phase. Our simulations show that temperature changes of around 1 K can in principle be obtained at the tetragonal-orthorhombic transition close to room temperature, even for small applied fields, provided that the applied field is strong enough to drive the system across the first order transition line. Our direct EC measurements for BTO single crystals at the cubic-tetragonal and at the tetragonal-orthorhombic transitions are in good qualitative agreement with our theoretical predictions, and in particular confirm the occurrence of an inverse EC effect at the tetragonal-orthorhombic transition for electric fields applied along the [001] pseudo-cubic direction.
description: 12 pages, 11 figures
A Review About Child Abuse Crimes Comitted Through Internet In Turkey
Creators: name: I, Kara
Publisher: name: figshare
Year: 2017
Subjects: subject: 170104 Forensic Psychology
subject: FOS: Other medical sciences

description: Child abuse which should be described as all kind of behaviors that negatively affecting child growth and progress has been come across in every culture. The relevance and awareness shown to child abuse has increased despite not yet enough in Turkey recent years. Criminal sanctions and procedural methods of struggling have been regulated either in international law or domestic law in order to combat against abuse of child escalating and spreading day by day. However, new species of offense have traced in parallel with technologic developments, and so, for effective battle would have been made law about satisfying needs. In this study, it has been provided opinion and suggestion about required measures, juridical combating point of offense and its legislative dimension in Turkey.
Prediction of a red nova outburst in KIC 9832227
Creators: name: Molnar, Lawrence A.
name: Van Noord, Daniel M.
name: Kinemuchi, Karen
name: Smolinski, Jason P.
name: Alexander, Cara E.
name: Cook, Evan M.
name: Jang, Byoungchan
name: Kobulnicky, Henry A.
name: Spedden, Christopher J.
name: Steenwyk, Steven D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first identification of a candidate precursor for an imminent red nova. Our prediction is based on the example of the precursor to the red nova V1309 Sco, which was retrospectively found to be a contact binary with an exponentially decreasing period. We explore the use of this distinctive timing signature to identify precursors, developing the observational and analysis steps needed. We estimate that our Galaxy has roughly 1-10 observable precursors. Specifically, we lay out the observational case for KIC 9832227, which we identified as a tentative candidate two years ago (Molnar et al. 2015, AAS Meeting Abstracts 415.05). Orbital timing over the past two years has followed the tentative exponential fit. As of late 2015, the period time derivative went beyond the range found in other systems (dP/dt < 1x10^{-8}), a necessary criterion for a serious candidate. We estimate time of merger is the year 2022.2(7). Double absorption line spectra confirm directly the 0.458 d light curve period is a contact binary system and yield a mass ratio m_B/m_A = 0.228(3). Closer analysis of the Kepler timing data shows evidence of a component C with orbital period P_C = 590(8) days and m_C x sin i_C = 0.11 solar masses. An alternative interpretation of the long term timing trend, light travel time delay due to orbit around a distant component D, is ruled out by the spectroscopic data for any nondegenerate star. Additional measurements are needed to test further the merging hypothesis and to utilize fully this fortuitous opportunity.
A Scalable, Linear-Time Dynamic Cutoff Algorithm for Molecular Dynamics
Creators: name: Springer, Paul
name: Ismail, Ahmed E.
name: Bientinesi, Paolo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Recent results on supercomputers show that beyond 65K cores, the efficiency of molecular dynamics simulations of interfacial systems decreases significantly. In this paper, we introduce a dynamic cutoff method (DCM) for interfacial systems of arbitrarily large size. The idea consists in adopting a cutoff-based method in which the cutoff is cho- sen on a particle-by-particle basis, according to the distance from the interface. Computationally, the challenge is shifted from the long-range solvers to the detection of the interfaces and to the computation of the particle-interface distances. For these tasks, we present linear-time algorithms that do not rely on global communication patterns. As a result, the DCM algorithm is suited for large systems of particles and mas- sively parallel computers. To demonstrate its potential, we integrated DCM into the LAMMPS open-source molecular dynamics package, and simulated large liquid/vapor systems on two supercomputers: SuperMuc and JUQUEEN. In all cases, the accuracy of DCM is comparable to the traditional particle-particle particle-mesh (PPPM) algorithm, while the performance is considerably superior for large numbers of particles. For JUQUEEN, we provide timings for simulations running on the full system (458, 752 cores), and show nearly perfect strong and weak scaling.
description: in ISC High Performance 2015
A Unified Method for First and Third Person Action Recognition
Creators: name: Javidani, Ali
name: Mahmoudi-Aznaveh, Ahmad
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, a new video classification methodology is proposed which can be applied in both first and third person videos. The main idea behind the proposed strategy is to capture complementary information of appearance and motion efficiently by performing two independent streams on the videos. The first stream is aimed to capture long-term motions from shorter ones by keeping track of how elements in optical flow images have changed over time. Optical flow images are described by pre-trained networks that have been trained on large scale image datasets. A set of multi-channel time series are obtained by aligning descriptions beside each other. For extracting motion features from these time series, PoT representation method plus a novel pooling operator is followed due to several advantages. The second stream is accomplished to extract appearance features which are vital in the case of video classification. The proposed method has been evaluated on both first and third-person datasets and results present that the proposed methodology reaches the state of the art successfully.
description: 5 pages
A Non-Rigid Map Fusion-Based RGB-Depth SLAM Method for Endoscopic Capsule Robots
Creators: name: Turan, Mehmet
name: Almalioglu, Yasin
name: Araujo, Helder
name: Konukoglu, Ender
name: Sitti, Metin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In the gastrointestinal (GI) tract endoscopy field, ingestible wireless capsule endoscopy is considered as a minimally invasive novel diagnostic technology to inspect the entire GI tract and to diagnose various diseases and pathologies. Since the development of this technology, medical device companies and many groups have made significant progress to turn such passive capsule endoscopes into robotic active capsule endoscopes to achieve almost all functions of current active flexible endoscopes. However, the use of robotic capsule endoscopy still has some challenges. One such challenge is the precise localization of such active devices in 3D world, which is essential for a precise three-dimensional (3D) mapping of the inner organ. A reliable 3D map of the explored inner organ could assist the doctors to make more intuitive and correct diagnosis. In this paper, we propose to our knowledge for the first time in literature a visual simultaneous localization and mapping (SLAM) method specifically developed for endoscopic capsule robots. The proposed RGB-Depth SLAM method is capable of capturing comprehensive dense globally consistent surfel-based maps of the inner organs explored by an endoscopic capsule robot in real time. This is achieved by using dense frame-to-model camera tracking and windowed surfelbased fusion coupled with frequent model refinement through non-rigid surface deformations.
Learning Representative Temporal Features for Action Recognition
Creators: name: Javidani, Ali
name: Mahmoudi-Aznaveh, Ahmad
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, a novel video classification method is presented that aims to recognize different categories of third-person videos efficiently. Our motivation is to achieve a light model that could be trained with insufficient training data. With this intuition, the processing of the 3-dimensional video input is broken to 1D in temporal dimension on top of the 2D in spatial. The processes related to 2D spatial frames are being done by utilizing pre-trained networks with no training phase. The only step which involves training is to classify the 1D time series resulted from the description of the 2D signals. As a matter of fact, optical flow images are first calculated from consecutive frames and described by pre-trained CNN networks. Their dimension is then reduced using PCA. By stacking the description vectors beside each other, a multi-channel time series is created for each video. Each channel of the time series represents a specific feature and follows it over time. The main focus of the proposed method is to classify the obtained time series effectively. Towards this, the idea is to let the machine learn temporal features. This is done by training a multi-channel one dimensional Convolutional Neural Network (1D-CNN). The 1D-CNN learns the features along the only temporal dimension. Hence, the number of training parameters decreases significantly which would result in the trainability of the method on even smaller datasets. It is illustrated that the proposed method could reach the state-of-the-art results on two public datasets UCF11, jHMDB and competitive results on HMDB51.
description: 15 pages