cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prolonged mixed phase induced by high pressure in MnRuP
Creators: name: Sereika, Raimundas
name: Wu, Wei
name: Park, Changyong
name: Kenney-Benson, Curtis
name: Brewe, Dale L.
name: Heald, Steve M.
name: Zhang, Jianbo
name: Yesudhas, Sorb
name: Deng, Hongshan
name: Chen, Bijuan
name: Luo, Jianlin
name: Ding, Yang
name: Mao, Ho-kwang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hexagonally structured MnRuP was studied under high pressure up to 35 GPa from 5 to 300 K using synchrotron X-ray diffraction. We observed that a partial phase transition from hexagonal to orthorhombic symmetry started at 11 GPa. The new and denser orthorhombic phase coexisted with its parent phase for an unusually long pressure range, ΔP ~ 50 GPa. We attribute this structural transformation to a magnetic origin, where a decisive criterion for the boundary of the mixed phase lays in the different distances between the Mn-Mn atoms. In addition, our theoretical study shows that the orthorhombic phase of MnRuP remains steady even at very high pressures up to ~ 250 GPa, when it should transform to a new tetragonal phase.
description: 15 pages, 5 figures, supplementary material
Statistical Inference for Covariate-Adaptive Randomization Procedures
Creators: name: Ma, Wei
name: Qin, Yichen
name: Li, Yang
name: Hu, Feifang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Covariate-adaptive randomization (CAR) procedures are frequently used in comparative studies to increase the covariate balance across treatment groups. However, because randomization inevitably uses the covariate information when forming balanced treatment groups, the validity of classical statistical methods after such randomization is often unclear. In this article, we derive the theoretical properties of statistical methods based on general CAR under the linear model framework. More importantly, we explicitly unveil the relationship between covariate-adaptive and inference properties by deriving the asymptotic representations of the corresponding estimators. We apply the proposed general theory to various randomization procedures such as complete randomization, rerandomization, pairwise sequential randomization, and Atkinson's $D_A$-biased coin design and compare their performance analytically. Based on the theoretical results, we then propose a new approach to obtain valid and more powerful tests. These results open a door to understand and analyze experiments based on CAR. Simulation studies provide further evidence of the advantages of the proposed framework and the theoretical results. Supplementary materials for this article are available online.
description: Updated to the published version
Sonnenfleckenzeichnung Nr. 14760.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.01.1941, erstellt von William Brunner, Assistent
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Hemithyrsocera Saussure 1893
Creators: name: Wang, Zongqing
name: Che, Yanli
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Blattodea
Ectobiidae
Hemithyrsocera

description: Hemithyrsocera Saussure, 1893
Type species: Blatta palliata Fabricius, 1798
Hemithyrsocera Saussure, 1893: 57.
Mopserina Princis, 1950: 218, synonymized by Princis, 1971: 1124. Plumiger Hebard, 1929: 22, synonymized with Aristiger by Bruijning, 1948: 59. Parasymploce Hebard, 1929: 69, synonymized by Roth, 1995: 962. Aristiger Hebard, 1940: 139, synonymized by Roth, 1995: 962.
Generic diagnosis (modified from Che et al. 2009). Tegmina and hind wings fully developed extending well beyond end of abdomen. Tegmen with a posterior branch of radial vein, which is usually forked; M and Cu veins longitudinal. Hind wing with radial vein forked before the mid, M and Cu veins slightly or obviously curved, Cu with 0, 1, 2, rarely 3 complete, and without incomplete branches; apical triangle developed or small. Pronotum nearly elliptical and flattened, concealing head and mesonotum. Fore femur Type A2 or A3; pulvilli on 4 proximal tarsomeres, tarsal claws symmetrical and simple, arolia present. First abdominal tergum unspecialized; seventh abdominal tergum specialized, with medial depressed region, some species also with one lateral lobe on each side. Supra-anal plate symmetrical, with a subcercal (intercercal) process ventrally near the base of each cercus or not. Subgenital plate strongly asymmetrical, hind margin with various shaped processes bearing long spines; styli represented by 1 or 2 large processes, right stylus sometimes presents as a small cylindrical process.
Male genitalia: male genitalia with L3 on left side and L2vm often with a slender rod or filament arising near or beyond the middle.
Remarks. Hemithyrsocera bears close resemblance to Symplocodes in morphology. Both Hemithyrsocera and its close genus Symplocodes have highly complex structure on the hind margin of the subgenital plate, and even the median phallomere (L2vm) of some Hemithyrsocera and Symplocodes species is very similar (Roth, 1995). And the only character that clearly distinguishes Hemithyrsocera and its close genus Symplocodes is the distinctly toothed tarsal claw or not. Tarsal claws of Symplocodes are heavily and conspicuously dentate on inner margins (Figs 7–9; Zheng et al., 2016); but tarsal claws of Hemithyrsocera are smooth, without any teeth (Figs 1–6).
Distribution. Oriental Region.
description: Published as part of Wang, Zongqing & Che, Yanli, 2017, Three new species of cockroach genus Hemithyrsocera Saussure, 1893 (Blattodea: Ectobiidae: Blattellinae) with redescriptions of two known species from China, pp. 543-556 in Zootaxa 4263 (3) on page 544, DOI: 10.11646/zootaxa.4263.3.6, http://zenodo.org/record/573667
Sonnenfleckenzeichnung Nr. 14757.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.01.1941, erstellt von William Brunner, Assistent
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Lee-Carter method for forecasting mortality for Peruvian Population
Creators: name: Cerda-Hernández, J.
name: Sikov, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: In this article, we have modeled mortality rates of Peruvian female and male populations during the period of 1950-2017 using the Lee-Carter (LC) model. The stochastic mortality model was introduced by Lee and Carter (1992) and has been used by many authors for fitting and forecasting the human mortality rates. The Singular Value Decomposition (SVD) approach is used for estimation of the parameters of the LC model. Utilizing the best fitted auto regressive integrated moving average (ARIMA) model we forecast the values of the time dependent parameter of the LC model for the next thirty years. The forecasted values of life expectancy at different age group with $95\%$ confidence intervals are also reported for the next thirty years. In this research we use the data, obtained from the Peruvian National Institute of Statistics (INEI).
description: 16 pages, 6 figures
title: Analysis of Maser Properties Associated with High-Mass Star Formation
Creators: name: Burton, Andrew James
Publisher: name: University of Kent
Year: 2022

description: The main aim of this thesis was to see if more insight could be drawn from the maser properties than just their association statistics. We explore the properties and distributions of the 6.7 GHz methanol masers from the Methanol MultiBeam (MMB) survey and the 22.235 GHz water masers from the H2O Southern Galactic Plane Survey (HOPS) within the massive and dense clumps detected by the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL), and what this tells us about the physical properties of the star forming regions that generate them. We find that clumps containing both water and methanol masers are significantly more luminous, more evolved and more massive than clumps only containing one of these maser species. This leads us to the conclusion that combinations of other maser species may also represent different star forming stages. We compare our results to the current “straw man” model (Ellingsen et al., 2007) and after finding some differences, we suggest some modifications. We investigate the nature of masers that are offset far from the centre of the clump, and find that these are generally a result of large Hii regions or unresolved sub-structures contained in the ATLASGAL clump. We have identified a sample of positionally and kinematically associated masers located on the edge of their clumps that have no clear infrared (IR) or submillimetre counterpart. Further work is required to identify the driving source of these masers. We also look at clumps that contain a significantly high quantity of water masers, and find that the majority of these clumps contain Hii regions that are shocking these water masers. These clumps also show significantly higher luminosities, masses and luminosity-to-mass ratios than clumps with both maser species, which suggests that these are some of the most intense and evolved star forming regions in the ATLASGAL database. Our results are useful, since we have proven that the properties of masers can tell us about the nature of their star forming environments, which opens up possibilities for targeted searches by using maser properties. This will improve our understanding of massive star formation going forward.
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.01.1941, erstellt von Karl Merz in Chur.
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Projektionsbildzeichnung in Chur auf dem Vordruck der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: unbekannt
Analytic torsion for surfaces with cusps II. Regularity, asymptotics and curvature theorem
Creators: name: Finski, Siarhei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58A05

description: In this article we study the Quillen norm on the determinant line bundle associated with a family of complex curves with cusps, which admit singular fibers. More precisely, we fix a family of complex curves $π: X \to S$, which admit at most double-point singularities. Let $(ξ, h^ξ)$ be a holomorphic Hermitian vector bundle over $X$. Let $σ_1, \ldots, σ_m : S \to X$ be disjoint holomorphic sections. We denote the divisor $D_{X/S} := \rm{Im}(σ_1) + \cdots + \rm{Im}(σ_m)$, and endow the relative canonical line bundle $ω_{X/S}$ with a Hermitian norm such that its restriction at each fiber of $π$ induces Kähler metric with hyperbolic cusps. This Hermitian norm induces the Hermitian norm on the twisted relative canonical line bundle $ω_{X/S}(D) := ω_{X/S} \otimes \mathscr{O}_{X}(D_{X/S})$. For $n \leq 0$, we study the determinant line bundle $λ(j^*(ξ\otimes ω_{X/S}(D)^n))$. We endow it with the Quillen norm by using the analytic torsion from the first paper of this series. Then we study the regularity of this Quillen norm and its asymptotics near the locus of singular curves. The singular terms of the asymptotics turn out to be reasonable enough, so that the curvature of $λ(j^*(ξ\otimes ω_{X/S}(D)^n))$ is well-defined as a current over $S$. We derive the explicit formula for this current, which gives a refinement of Riemann-Roch-Grothendieck theorem at the level of currents. This generalizes the curvature formulas of Takhtajan-Zograf and Bismut-Bost. As a consequence of our study, we also get some regularity results on the Weil-Petersson form over the moduli space of pointed curves, which are enough to conclude the well-known fact, originally due to Wolpert, that the Weil-Petersson volume of the moduli space of pointed stable curves is a rational multiple of a power of $π$.
description: 38 pages, 1 figure
Event-Based Motion Segmentation by Motion Compensation
Creators: name: Stoffregen, Timo
name: Gallego, Guillermo
name: Drummond, Tom
name: Kleeman, Lindsay
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In contrast to traditional cameras, whose pixels have a common exposure time, event-based cameras are novel bio-inspired sensors whose pixels work independently and asynchronously output intensity changes (called "events"), with microsecond resolution. Since events are caused by the apparent motion of objects, event-based cameras sample visual information based on the scene dynamics and are, therefore, a more natural fit than traditional cameras to acquire motion, especially at high speeds, where traditional cameras suffer from motion blur. However, distinguishing between events caused by different moving objects and by the camera's ego-motion is a challenging task. We present the first per-event segmentation method for splitting a scene into independently moving objects. Our method jointly estimates the event-object associations (i.e., segmentation) and the motion parameters of the objects (or the background) by maximization of an objective function, which builds upon recent results on event-based motion-compensation. We provide a thorough evaluation of our method on a public dataset, outperforming the state-of-the-art by as much as 10%. We also show the first quantitative evaluation of a segmentation algorithm for event cameras, yielding around 90% accuracy at 4 pixels relative displacement.
description: When viewed in Acrobat Reader, several of the figures animate. Video: https://youtu.be/0q6ap_OSBAk
Focus Is All You Need: Loss Functions For Event-based Vision
Creators: name: Gallego, Guillermo
name: Gehrig, Mathias
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Event cameras are novel vision sensors that output pixel-level brightness changes ("events") instead of traditional video frames. These asynchronous sensors offer several advantages over traditional cameras, such as, high temporal resolution, very high dynamic range, and no motion blur. To unlock the potential of such sensors, motion compensation methods have been recently proposed. We present a collection and taxonomy of twenty two objective functions to analyze event alignment in motion compensation approaches (Fig. 1). We call them Focus Loss Functions since they have strong connections with functions used in traditional shape-from-focus applications. The proposed loss functions allow bringing mature computer vision tools to the realm of event cameras. We compare the accuracy and runtime performance of all loss functions on a publicly available dataset, and conclude that the variance, the gradient and the Laplacian magnitudes are among the best loss functions. The applicability of the loss functions is shown on multiple tasks: rotational motion, depth and optical flow estimation. The proposed focus loss functions allow to unlock the outstanding properties of event cameras.
description: 29 pages, 19 figures, 4 tables
Sonnenfleckenzeichnung unnummeriert, ohne L-Nr. eingeordnet, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.01.1941, erstellt von Karl Rapp in Locarno-Monti
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage in Locarno-Monti, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Spiegelfernrohr, Öffnung von 11 cm, Okular von 88facher Vergrösserung, Beobachtungen mit einem Graukeil.
Zeichnung aus der Zeit der Beobachtertätigkeit von Ing. Karl Rapp als Privat-Astronom, die er seit den Neunzehnvierziger Jahren für die Eidgenössische Sternwarte Zürich ausführte. Aus den ersten zwei Jahren der freiwilligen Mitarbeit sind nur einzelne Stücke überliefert. Erst zwei Jahre später ist jeweils eine ergänzende Serie in Zürich aufbewahrt worden. Nochmals fünf Jahre später arbeitete Karl Rapp neu auf vertraglicher Basis weiter mit, bis schliesslich nach einem weiteren Jahrzehnt die permanente Beobachtungsstation in Locarno-Monti geschaffen wurde, welche an die langjährige Serie von Karl Rapp anknüpfte
Constructing minimal telescopers for rational functions in three discrete variables
Creators: name: Chen, Shaoshi
name: Hou, Qing-Hu
name: Huang, Hui
name: Labahn, George
name: Wang, Rong-Hua
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symbolic Computation (cs.SC)
subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We present a new algorithm for constructing minimal telescopers for rational functions in three discrete variables. This is the first discrete reduction-based algorithm that goes beyond the bivariate case. The termination of the algorithm is guaranteed by a known existence criterion of telescopers. Our approach has the important feature that it avoids the potentially costly computation of certificates. Computational experiments are also provided so as to illustrate the efficiency of our approach.
Sonnenfleckenzeichnung Nr. 14811.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.03.1941, erstellt von William Brunner, Assistent
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Magnetic control of flexible thermoelectric devices based on macroscopic 3D interconnected nanowire networks
Creators: name: Araujo, Flavio Abreu
name: Gomes, Tristan da Câmara Santa Clara
name: Piraux, Luc
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-related effects in thermoelectricity can be used to design more efficient refrigerators and offer novel promising applications for the harvesting of thermal energy. The key challenge is to design structural and compositional magnetic material systems with sufficiently high efficiency and power output for transforming thermal energy into electric energy and vice versa. Here, the fabrication of large-area 3D interconnected Co/Cu nanowire networks is demonstrated, thereby enabling the controlled Peltier cooling of macroscopic electronic components with an external magnetic field. The flexible, macroscopic devices overcome inherent limitations of nanoscale magnetic structures due to insufficient power generation capability that limits the heat management applications. From properly designed experiments, large spin-dependent Seebeck and Peltier coefficients of $-9.4$ $μ$V/K and $-2.8$ mV at room temperature, respectively. The resulting power factor of Co/Cu nanowire networks at room temperature ($\sim7.5$ mW/K$^2$m) is larger than those of state of the art thermoelectric materials, such as BiTe alloys and the magneto-power factor ratio reaches about 100\% over a wide temperature range. Validation of magnetic control of heat flow achieved by taking advantage of the spin-dependent thermoelectric properties of flexible macroscopic nanowire networks lay the groundwork to design shapeable thermoelectric coolers exploiting the spin degree of freedom.
description: 11 pages, 7 figures
Sonnenfleckenzeichnung Nr. 14788.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.03.1941, erstellt von William Otto Brunner
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Role of non-linear data processing on speech recognition task in the framework of reservoir computing
Creators: name: Araujo, Flavio Abreu
name: Riou, Mathieu
name: Torrejon, Jacob
name: Tsunegi, Sumito
name: Querlioz, Damien
name: Yakushiji, Kay
name: Fukushima, Akio
name: Kubota, Hitoshi
name: Yuasa, Shinji
name: Stiles, Mark D.
name: Grollier, Julie
Publisher: name: arXiv
Year: 2019
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The reservoir computing neural network architecture is widely used to test hardware systems for neuromorphic computing. One of the preferred tasks for bench-marking such devices is automatic speech recognition. However, this task requires acoustic transformations from sound waveforms with varying amplitudes to frequency domain maps that can be seen as feature extraction techniques. Depending on the conversion method, these may obscure the contribution of the neuromorphic hardware to the overall speech recognition performance. Here, we quantify and separate the contributions of the acoustic transformations and the neuromorphic hardware to the speech recognition success rate. We show that the non-linearity in the acoustic transformation plays a critical role in feature extraction. We compute the gain in word success rate provided by a reservoir computing device compared to the acoustic transformation only, and show that it is an appropriate benchmark for comparing different hardware. Finally, we experimentally and numerically quantify the impact of the different acoustic transformations for neuromorphic hardware based on magnetic nano-oscillators.
description: 13 pages, 5 figures
Sonnenfleckenzeichnung unnummeriert, ohne L-Nr. eingeordnet, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.02.1941, erstellt von Karl Rapp in Locarno-Monti
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage in Locarno-Monti. Instrument: Spiegelfernrohr, Öffnung von 11 cm, Okular von 88facher Vergrösserung, Beobachtungen mit einem Graukeil.
Zeichnung aus der Zeit der Beobachtertätigkeit von Ing. Karl Rapp als Privat-Astronom, die er seit den Neunzehnvierziger Jahren für die Eidgenössische Sternwarte Zürich ausführte. Aus den ersten zwei Jahren der freiwilligen Mitarbeit sind nur einzelne Stücke überliefert. Erst zwei Jahre später ist jeweils eine ergänzende Serie in Zürich aufbewahrt worden. Nochmals fünf Jahre später arbeitete Karl Rapp neu auf vertraglicher Basis weiter mit, bis schliesslich nach einem weiteren Jahrzehnt die permanente Beobachtungsstation in Locarno-Monti geschaffen wurde, welche an die langjährige Serie von Karl Rapp anknüpfte
Sequential estimation of quantiles with applications to A/B-testing and best-arm identification
Creators: name: Howard, Steven R.
name: Ramdas, Aaditya
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We propose confidence sequences -- sequences of confidence intervals which are valid uniformly over time -- for quantiles of any distribution over a complete, fully-ordered set, based on a stream of i.i.d. observations. We give methods both for tracking a fixed quantile and for tracking all quantiles simultaneously. Specifically, we provide explicit expressions with small constants for intervals whose widths shrink at the fastest possible $\sqrt{t^{-1} \log\log t}$ rate, along with a non-asymptotic concentration inequality for the empirical distribution function which holds uniformly over time with the same rate. The latter strengthens Smirnov's empirical process law of the iterated logarithm and extends the Dvoretzky-Kiefer-Wolfowitz inequality to hold uniformly over time. We give a new algorithm and sample complexity bound for selecting an arm with an approximately best quantile in a multi-armed bandit framework. In simulations, our method requires fewer samples than existing methods by a factor of five to fifty.
description: 35 pages, 8 figures
Regression-adjusted average treatment effect estimates in stratified randomized experiments
Creators: name: Liu, Hanzhong
name: Yang, Yuehan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Researchers often use linear regression to analyse randomized experiments to improve treatment effect estimation by adjusting for imbalances of covariates in the treatment and control groups. Our work offers a randomization-based inference framework for regression adjustment in stratified randomized experiments. Under mild conditions, we re-establish the finite population central limit theorem for a stratified experiment. We prove that both the stratified difference-in-means and the regression-adjusted average treatment effect estimators are consistent and asymptotically normal. The asymptotic variance of the latter is no greater and is typically lesser than that of the former. We also provide conservative variance estimators to construct large-sample confidence intervals for the average treatment effect.
Sonnenfleckenzeichnung Nr. 14782.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.02.1941, erstellt von William Otto Brunner
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
MODULATION OF DEPRESSION-LIKE BEHAVIOR BY A COMBINATION WITH VITAMIN D3 AND 17β-ESTRADIOL IN MIDDLE-AGED OVARIECTOMIZED RATS SUBJECTED TO CHRONIC MILD STRESS
Creators: name: J. Fedotova
name: V. Mironova
Publisher: name: Opera Medica et Physiologica
Year: 2020
Subjects: Vitamin D3
long-term ovariectomy
depression
chronic unpredictable mild stress
17β-estradiol
5-HT
GDNF

description: The aim of this study was to examine the antidepressant-like responses to vitamin D3 (VD3) subcutaneous (s.c.) supplementation (1.0, 2.5, and 5.0 mg/kg) in middle-aged long-term ovariectomized (OVX) rats treated with a low dose of 17β-estradiol (17β-E2) (0.5 μg/rat, s.c.) exposed to the chronic unpredictable mild stress (CUMS). Sucrose preference (SPT), forced swimming (FST), and open-field (OFT) tests were performed to measure anhedonia, depressionlike state, and locomotor/grooming activities, respectively. Glial cell line-derived factor (GDNF) levels in the hippocampus of middle-aged long-term OVX rats following CUMS treated with VD3 were measured using ELISA and Western blotting. The serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) concentrations in the hippocampus were detected by high performance liquid chromatography (HPLC). The findings demonstrated that VD3 (1.0 mg/kg, s.c.) in a combination with a low dose of 17β-E2 increased sucrose consumption in the SPT and decreased depression-like behavior in the FST of middle-aged long-term OVX rats exposed to CUMS. This dose of VD3 elevated hippocampal GDNF protein expression and increased 5-HT/5-HIAA levels in middle-aged long-term OVX rats plus 17β-E2 compared to the middle-aged OVX rats plus 17β-E2 with CUMS. The other two doses of VD3 (2.5 and 5.0 mg/kg, s.c.) failed to modify both GDNF protein levels and 5-HT turnover in the hippocampus of middle-aged long-term OVX rats treated with 17β-E2 exposed to CUMS. Thus, treatment with a low dose of VD3 (1.0 mg/kg, s.c.) in a combination with a low dose of 17β-E2 enhanced antianhedonic-/antidepressant-like effects of both substances in middle-aged long-term OVX rats exposed to CUMS.
Sonnenfleckenzeichnung Nr. 14781.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.02.1941, erstellt von William Otto Brunner
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
The Degree of Stiefel Manifolds
Creators: name: Brysiewicz, Taylor
name: Gesmundo, Fulvio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14M17, 05A10, 52B20, 15B10,

description: We compute the degree of Stiefel manifolds, that is, the variety of orthonormal frames in a finite dimensional vector space. Our approach employs techniques from classical algebraic geometry, algebraic combinatorics, and classical invariant theory.
description: 24 pages, Final version accepted in ECA
The Quantum Approximate Optimization Algorithm and the Sherrington-Kirkpatrick Model at Infinite Size
Creators: name: Farhi, Edward
name: Goldstone, Jeffrey
name: Gutmann, Sam
name: Zhou, Leo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Quantum Approximate Optimization Algorithm (QAOA) is a general-purpose algorithm for combinatorial optimization problems whose performance can only improve with the number of layers $p$. While QAOA holds promise as an algorithm that can be run on near-term quantum computers, its computational power has not been fully explored. In this work, we study the QAOA applied to the Sherrington-Kirkpatrick (SK) model, which can be understood as energy minimization of $n$ spins with all-to-all random signed couplings. There is a recent classical algorithm by Montanari that, assuming a widely believed conjecture, can efficiently find an approximate solution for a typical instance of the SK model to within $(1-ε)$ times the ground state energy. We hope to match its performance with the QAOA. Our main result is a novel technique that allows us to evaluate the typical-instance energy of the QAOA applied to the SK model. We produce a formula for the expected value of the energy, as a function of the $2p$ QAOA parameters, in the infinite size limit that can be evaluated on a computer with $O(16^p)$ complexity. We evaluate the formula up to $p=12$, and find that the QAOA at $p=11$ outperforms the standard semidefinite programming algorithm. Moreover, we show concentration: With probability tending to one as $n\to\infty$, measurements of the QAOA will produce strings whose energies concentrate at our calculated value. As an algorithm running on a quantum computer, there is no need to search for optimal parameters on an instance-by-instance basis since we can determine them in advance. What we have here is a new framework for analyzing the QAOA, and our techniques can be of broad interest for evaluating its performance on more general problems where classical algorithms may fail.
description: 32 pages, 2 figures, 2 tables. Improved presentation for journal version. Results and technical content unchanged since v2
Sonnenfleckenzeichnung Nr. 14790.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.03.1941, erstellt von William Otto Brunner
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Average values of quadratic Hecke character sums
Creators: name: Gao, Peng
name: Zhao, Liangyi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11L05, 11L40, 11R11

description: We study smoothed character sums involving $\sum_{m,n} ( \frac{m}{n} )_2$, where $( \frac{m}{n} )_2$ denotes the quadratic symbol in the Gaussian field. We extend previously known results to obtain asymptotic formulas for the sums considered to larger ranges of $m$ and $n$.
description: 8 pages
Sonnenfleckenzeichnung unnummeriert, ohne L-Nr. eingeordnet, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.01.1941, erstellt von Karl Rapp in Locarno-Monti
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage in Locarno-Monti, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Spiegelfernrohr, Öffnung von 11 cm, Okular von 88facher Vergrösserung, Beobachtungen mit einem Graukeil.
Später wurden ergänzende Angaben aufgrund weiterer auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt.
Zeichnung aus der Zeit der Beobachtertätigkeit von Ing. Karl Rapp als Privat-Astronom, die er seit den Neunzehnvierziger Jahren für die Eidgenössische Sternwarte Zürich ausführte. Aus den ersten zwei Jahren der freiwilligen Mitarbeit sind nur einzelne Stücke überliefert. Erst zwei Jahre später ist jeweils eine ergänzende Serie in Zürich aufbewahrt worden. Nochmals fünf Jahre später arbeitete Karl Rapp neu auf vertraglicher Basis weiter mit, bis schliesslich nach einem weiteren Jahrzehnt die permanente Beobachtungsstation in Locarno-Monti geschaffen wurde, welche an die langjährige Serie von Karl Rapp anknüpfte
Book review: "Write Down Your Thoughts: Essay Writing for EFL Learners" by L Setyowati, S Sukmawan, and A A El Sulukiyah
Creators: name: Syahid, Abdul
Publisher: name: Zenodo
Year: 2020
Subjects: book review
essay writing
EFL Learners

description: Book review: "Write Down Your Thoughts: Essay Writing for EFL Learners" by L Setyowati, S Sukmawan, and A A El Sulukiyah
D2.1 Open science policies and resource provisioning in the Nordic and Baltic countries (first report)
Creators: name: Per-Olov Hammargren
name: Maijastiina Arvola
name: Rauste, Päivi
Publisher: name: Zenodo
Year: 2020
Subjects: EOSC-Nordic
Open Science policy
Access policy
Resource provisioning policy
EOSC

description: As of 2016, the European Commission organises its Open Science policy according to eight ambitions, one of which is to create a federated ecosystem of research data infrastructures allowing researchers, communities, citizens and scientists to share and process publicly funded research results and data across borders and scientific domains. The European Open Science Cloud (EOSC) is foreseen to provide this federated ecosystem. To achieve this aim, efforts through a number of projects are made to understand the state of play, maturity, timelines, conformity and divergence respectively with common EU guidelines for Open Science. In order to support the European Commission in the work related to mapping the state of play regarding Open Science, the EOSC-Nordic project has performed desktop studies examining Open Science policies across the Nordics and Baltics.
 The EOSC-Hub project aims to form a single contact point for European researchers and innovators to facilitate discovery, access, use and reuse a broad spectrum of resources for advanced data-driven research. Different national regulations govern the use of aforementioned horizontal IT-resources for data-driven research. The horizontal IT-services services chosen for the desktop studies in this report were limited to nationally available basic horizontal IT-infrastructure, compute and storage, funded by national funders. It is essential to understand the different national processes governing the access to resources, and to facilitate the potential development of common approaches to access policies and resource provisioning. Understanding access and resource provisioning principles is essential to facilitate the vision of EOSC-Hub.
 The studies within this report describe the state of play regarding Open Science and resource provisioning and access policies addressing similarities and differences across the Nordics and the Baltics.
description: This is the draft version of the deliverable not yet approved by the European Commission.
Quasi-isometric diversity of marked groups
Creators: name: Minasyan, Ashot
name: Osin, Denis
name: Witzel, Stefan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20F69, 20F65, 03E15, 03C60

description: We use basic tools of descriptive set theory to prove that a closed set $\mathcal S$ of marked groups has $2^{\aleph_0}$ quasi-isometry classes provided every non-empty open subset of $\mathcal S$ contains at least two non-quasi-isometric groups. It follows that every perfect set of marked groups having a dense subset of finitely presented groups contains $2^{\aleph_0}$ quasi-isometry classes. These results account for most known constructions of continuous families of non-quasi-isometric finitely generated groups. They can also be used to prove the existence of $2^{\aleph_0}$ quasi-isometry classes of finitely generated groups having interesting algebraic, geometric, or model-theoretic properties.
description: Minor corrections. To appear in the Journal of Topology
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.01.1941, erstellt von Enrique Gullon an der Sternwarte Madrid
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Zeichnung mit Tinte, erstellt auf einem eigenen Vordruck in Madrid. Instrument: Grubb Refraktor Teleskop (Öffnung: 20 cm, f = 3 m, projiziertes Sonnenbild D = 6,5 cm).
Instrumentennachweis gemäss Aparicio (u.a.): Sunspot, in: Solar Physics, Vol. 289, S. 4335-49, DOI: 10.1007/s11207-014-0567-x
Sliding mode control for a generalization of the Caginalp phase-field system
Creators: name: Colli, Pierluigi
name: Manini, Davide
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35B30, 80A22, 34H05, 93B52

description: In the present paper, we present and solve the sliding mode control (SMC) problem for a second-order generalization of the Caginalp phase-field system. This generalization, inspired by the theories developed by Green and Naghdi on one side, and Podio-Guidugli on the other, deals with the concept of thermal displacement, i.e., a primitive with respect to the time of the temperature. Two control laws are considered: the former forces the solution to reach a sliding manifold described by a linear constraint between the temperature and the phase variable; the latter forces the phase variable to reach a prescribed distribution $φ^*$. We prove existence, uniqueness as well as continuous dependence of the solutions for both problems; two regularity results are also given. We also prove that, under suitable conditions, the solutions reach the sliding manifold within finite time.
description: 26 pages. Key words: phase field system, nonlinear boundary value problems, phase transition, sliding mode control, state-feedback control law
Michele Cometa, Archeologie del dispositivo
Creators: name: Albanese, Angela
Publisher: name: Università degli Studi di Cagliari
Year: 2017

description: Sono ormai numerosi i volumi con i quali Michele Cometa ha gettato in questi anni solide basi per un radicamento anche in Italia della disciplina della Visual Culture, ormai saldamente affermatasi a livello internazionale grazie a lavori come quelli di W.J.T. Mitchell (Picture Theory, 1994), Hans Belting (Bilderfragen. Die Bildwissenschaft im Aufbruch, 2007), Gottfried Boehm (Wie Bilder Sinn erzeugen, 2007), fondativi del cosiddetto Pictorial Turn (Mitchell) e Iconic Turn (Boehm) degli studi culturali novecenteschi. L’indagine di Cometa sulla complessa interazione fra verbale e visuale e sui significati che possono assumere, dalla prospettiva del letterato e del teorico della letteratura, le molteplici esperienze della visione (immagini, dispositivi ottici/media visuali e sguardi sulle immagini) contenute nei testi letterari, si è articolata nel tempo attraverso studi decisivi.
description: Between, V. 7, N. 14 (2017): Maschere del tragico
Sonnenfleckenzeichnung Nr. 14797.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.03.1941, erstellt von Max Waldmeier
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung Nr. 14749.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.01.1941, erstellt von William Otto Brunner
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1941

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich, später ergänzt mit einer kleinen Tabelle für die Auszählung der Flecken nach ihrer Verteilung auf Abschnitte der sichtbaren Sonnenhälfte, nach Quadrant bzw. nach Halbkugel (N, S, W, E). Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Empidideicus
Creators: name: Gharali, Babak
name: Kamali, Karim
name: Evenhuis, Neal
name: Talebi, Ali Asghar
name: Khalgani, Jafar
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Empidideicus

description: Key to species of Empidideicus known from Iran
1. Occiput completely black1 (Figs. 7 c, e & f).................................................................................................................. 2
- Occiput yellow laterally (Figs. 7 a, b & d) ................................................................................................................... 4
2. Scutellum mostly black with narrow yellow margin (Fig. 7 e); mid coxa with sclerotised square flap-like projection basolaterally (Fig. 4) ................................................................................. E. legulicoxa Gharali & Evenhuis, sp. nov.
- Scutellum completely yellow (Figs. 8 a–f); mid coxa without a basal projection......................................................... 3
3. Dorsum of mesonotum completely black, without longitudinal stripes; prescutellar area completely black (Fig. 8 f)2 ...................................................................................................................... E. persicus Gharali & Evenhuis, sp. nov.
- Dorsum of mesonotum with three black longitudinal stripes (Fig. 8 d), if stripes coalesced3 prescutellar area and interhumeral marks yellow ....................................................................... E. greatheadi Gharali & Evenhuis, sp. nov.
4. Vein R4+5 turned upward, meeting Costa at level of CuA1; vein M1+2 shorter than half of M2 (Fig. 2 b) ......................... ..................................................................................................................... E. ebellicus Gharali & Evenhuis, sp. nov.
- Vein R4+5 straight, meeting Costa well beyond the level of CuA1; vein M1+2 longer than half of M2 (Figs. 1 b & 5b) .. ...................................................................................................................................................................................... 5
5. Second antennal flagellomere as long as or longer than first flagellomere (Fig. 1 a); furca well sclerotised around genital orifice (Fig. 1 g) ................................................................................... E. amicus Gharali & Evenhuis, sp. nov.
- Second antennal flagellomere much shorter than first flagellomere (Fig. 5 a); furca without sclerotised area around genital orifice (Fig. 5 g) .......................................................................... E. matricarius Gharali & Evenhuis, sp. nov.
description: Published as part of Gharali, Babak, Kamali, Karim, Evenhuis, Neal, Talebi, Ali Asghar & Khalgani, Jafar, 2010, First record of the genus Empidideicus (Diptera: Bombylioidea: Mythicomyiidae) from Iran, with description of six new species, pp. 1-19 in Zootaxa 2627 on page 2, DOI: 10.5281/zenodo.198244