Miracle-dz/UniFAR-FTUs huggingface dataset:
What Drives the Dispersion Anomaly?

This paper shows that the stock return predictability of analysts’ earnings forecast dispersion is driven by the information content of dispersion about future firm profitability. Greater dispersion predicts lower future profitability, and the return predictability of dispersion disappears after controlling for future profitability. We propose disclosure manipulation as an explanation for the relation between dispersion and future profitability. Disclosure quality is inversely related to forecast dispersion. Moreover, the return predictability of dispersion decreases in disclosure quality, and is no longer significant in the post-Sarbanes-Oxley period. Our results are robust to consideration of previously suggested explanations for the dispersion anomaly.
Using an Augmented Reality Enhanced Tabletop System to Promote Learning of Mathematics: A Case Study with Students with Special Educational Needs.

Background:Learning applied mathematics is very important for people with special educational needs (SEN). SEN students cannot fully benefit from mathematics instruction and curriculum in general education classrooms. Technology can adapt and individualize mathematics instruction for SEN students. Researchers and teachers in the field of special education have made efforts to incorporate technology into math curricula for these students to improve their results.Material and methods:The tabletop system was used in a real educational setting, where we compared the learning experience of the students before and after using the tabletop. The evaluation method focused on three elements: the increase of knowledge, the relationship between the acquired learning and the type of educational needs, and the student’s satisfaction and motivation after using the tabletop.Results:The study provides evidence to suggest several reasons why the tabletop instructional effectiveness is higher than that using traditional methods. The tabletop is shown as a new technology-based artifact which offers new ways of interacting with the European monetary system, and using technology as an “object-to-think-with”, It also increases the motivation of students as well as the collaboration between them.Conclusions:Our results reveal that the tabletop is a feasible technology that can be successfully applied in special educational needs contexts.
Dispersive qubit measurement using an on-chip parametric amplifer

We investigate the quantum measurement physics of a system in which a phase-sensitive parametric amplifier is used to directly measure a qubit to which it is coupled dispersively. By analytic calculation of the signal-to-noise ratio, we show that the amplification properties of the paramp can be exploited to achieve on-chip gain of the qubit readout signal, mitigating the damage done to the measurement rate by circulator added noise and losses in between the readout cavity and any following amplification chain. With a different choice of drive phase, we show that when added noise is not a concern, the squeezing properties of the paramp can be used to enhance the measurement rate relative to a standard dispersive readout by reducing the readout noise without corresponding reduction of qubit signal. We then proceed to calculate the back-action dephasing of the qubit by way of a phase-space technique, and find analytic results valid in the long-time limit while numerically handling the finite-time case. We show how in both operating modes, in the long-time limit, the back-action dephasing of the qubit can be made as small as is allowed by quantum mechanics by using using sufficiently many photons in the measurement, i.e.\@ by using a sufficiently strong coherent measurement drive. Crucially, we find that in the presence of experimentally realistic amounts of added noise, the on-chip gain afforded by such a device can be used to come significantly closer to the quantum limit than is possible with a standard dispersive measurement setup, allowing for efficiencies of ~ 75% under conditions that would yield efficiencies <~ 1 % when applying the usual scheme. %%%%Nous etudions la physique de la mesure quantique d'un systeme pour lequel un amplificateur parametrique sensible a la phase est utilise pour mesurer directement un qubit auquel il est couple dispersivement. Par un calcul analytique du rapport signal sur bruit, nous demontrons que les proprietes d'amplification de l'amplificateur peuvent etre utilisees pour obtenir l'amplification du signal. Ceci peut reduire l'impact du bruit ajoute par des circulateurs ainsi que la chaine d'amplification qui suit. Avec un choix different de la phase du signal d'entree, nous demontrons que quand il n'y a pas de bruit ajoute, les proprietes de compression de l'amplificateur peuvent etre utilisees pour une amelioration du rapport signal sur bruit. Ensuite, nous utilisons une methode d'espace des phases pour calculer le dephasage de l'action-retour. Dans la limite des temps longs, nous obtenons des resultats analytique, et nous utilisons des calculs numeriques pour des durees de temps arbitraire. Nous demontrons que pour les deux approches, dans la limite des temps longs, le dephasage d'action-retour peut etre rendu aussi petit qu'est autorisee par la mechanique quantique en utilisant suffisamment de photons. Crucialement, nous demontrons que dans la presence d'un montant realiste de bruit ajoute, l'amplification causee par le paramp peut etre utilise pour se rapprocher plus pres de la…
Calibration Systems of the KATRIN Experiment and Systematics Inherent in the Search for Sterile Neutrinos at the keV Scale

Author(s): Bahr, Matthew | Advisor(s): Monreal, Benjamin | Abstract: The presence of non-zero neutrino mass is one of the most important discoveries of physics beyond the standard model. Experiments in neutrino oscillation have established the mass splittings and mixing parameters of the (as of now) three known mass states, but the absolute scale of neutrino masses remains a mystery. In addition, evidence has mounted suggesting that the current picture of the three neutrino species may not be complete.The KATRIN (Karlsruhe Tritium Neutrino) experiment aims to measure the neutrino mass to 0.2 eV, representing an order of magnitude improvement in any direct measurement of the absolute scale. KATRIN will accomplish this task by measuring the endpoint spectrum of beta decay electrons from molecular tritium. The high precision beta spectroscopy will be performed via magnetic collimation electrostatic (MAC-E) filter spectroscopy. This measurement technique presents several sources of systematic error. In particular, it is of utmost importance that the activity and column density is of tritium is known to high precision. The presence of backscattered electrons also have the potential to alter the shape of the tritium endpoint. This document contains discussion of these systematic uncertainties, along with the design and construction of calibration systems that aim to reduce those systematics.The question of electron backscattering, and how it applies to the KATRIN measurement has also been explored experimentally for the first time. A measurement has been performed using a scanning electron microscope and custom-designed electrostatic spectrometer to measure the energy spectrum of backscattered electrons close to the tritium endpoint energy. An analysis has also been performed to explore the possible systematics originating from backscattered electrons on a possible keV-scale sterile neutrino search.The electron backscattering experiment has measured Auger electrons from gold in the energy range 6-11 keV produced at a rate of $10^{-4}$ Auger electrons per incident electron. An investigation of proposed keV sterile neutrino search analysis methods show that this rate of Auger electron production is problematic, and work needs to be done to reduce this source of background if a keV-scale sterile neutrino search is to be successful.
Participatory on farm evaluation of improved mungbean technologies in the low land areas of North Shewa Zone Amhara Region, Ethiopia

The study was conducted in four selected potential areas of North Shewa zone namely; Kewot, Efratana gidim, Ensaro and Merhabete district. The main objective of the study was to evaluate, select the best performing mungbean varieties and to assess farmer’s technology preference. The experiment was done using three improved varieties namely; Rasa (N-26), NLV-1, and Arkebe improved varieties and local variety as a check. The analytical result showed that Rasa (N-26) variety was preferred by the farmers followed by NLV-1. The result gotten from the analysis of variance indicated that the difference among the means of the mungbean varieties for grain yield, pod length and hundred seed weight are significant at 5% probability level for both locations. The highest yield (1541.3 kg/ha) was recorded from Rasa (N-26) variety at Jema valley followed by the local variety (1243.3 kg/ha), while the lowest yield (735.7 and 676.3 kg/ha) was obtained from the varieties NLV-1 and Arkebe, respectively. The partial budget analysis result also revealed that only Rasa (N-26) had the highest net benefit return compared to the local variety. The marginal rate of return for changing from using local variety to improved Rasa (N-26) variety was 1074%. Therefore pre-scaling up of Rasa (N-26) variety with its improved management practice should be done. Key words: Mungbean, farmer preference, participation, rasa variety.
SOLPS-ITER simulations of the TCV divertor upgrade

The effect of the upcoming TCV divertor upgrade on the distribution of neutrals and the onset of detachment is studied using 2D transport code simulations. The divertor upgrade is centered around the installation of a gas baffle to form a divertor chamber of variable closure. SOLPS-ITER simulations predict that the baffle geometry selected to be installed in TCV in 2019 increases the divertor neutral density by a factor ∼5 and the neutral compression by one order of magnitude in typical TCV single null, Ohmic heated scenarios (330 kW). The compression increases further with the addition of auxiliary heating systems (1.2 MW). Simulations show that volumetric power losses in the divertor increase giving access to deeper detachment for given upstream densities and heating power. Predictions for observations by various TCV diagnostics, including baratrons, divertor spectrometer and visible camera systems, are presented to guide the experimental verification of the efficiency of the divertor baffles.
KM3MeT 2.0 Letter of intent for ARCA and ORCA

S Adrian-Martinez, M Ageron, F Aharonian, S Aiello, A Albert, F Ameli, E Anassontzis, M Andre, G Androulakis, M Anghinolfi, G Anton, M Ardid, T Avgitas, G Barbarino, E Barbarito, B Baret, J Barrios-Marti, B Belhorma, A Belias, E Berbee, A van den Berg, V Bertin, S Beurthey, V van Beveren, N Beverini, S Biagi, A Biagioni, M Billault, M Bondi, R Bormuth, B Bouhadef, G Bourlis, S Bourret, C Boutonnet, M Bouwhuis, C Bozza, R Bruijn, J Brunner, E Buis, J Busto, G Cacopardo, L Caillat, M Calamai, D Calvo, A Capone, L Caramete, S Cecchini, S Celli, C Champion, R Cherkaoui El Moursli, S Cherubini, T Chiarusi, M Circella, L Classen, R Cocimano, J A B Coelho, A Coleiro, S Colonges, R Coniglione, M Cordelli, A Cosquer, P Coyle, A Creusot, G Cuttone, A D'Amico, G De Bonis, G De Rosa, C De Sio, F Di Capua, I Di Palma, A F Diaz Garcia, C Distefano, C Donzaud, D Dornic, Q Dorosti-Hasankiadeh, E Drakopoulou, D Drouhin, L Drury, M Durocher, T Eberl, S Eichie, D van Eijk, I El Bojaddaini, N El Khayati, D Elsaesser, A Enzenhofer, F Fassi, P Favali, P Fermani, G Ferrara, C Filippidis, G Frascadore, L A Fusco, T Gal, S Galata, F Garufi, P Gay, M Gebyehu, V Giordano, N Gizani, R Gracia, K Graf, T Gregoire, G Grella, R Habel, S Hallmann, H van Haren, S Harissopulos, T Heid, A Heijboer, E Heine, S Henry, J J Hernandez-Rey, M Hevinga, J Hofestadt, C M F Hugon, G Illuminati, C W James, P Jansweijer, M Jongen, M de Jong, M Kadler, O Kalekin, A Kappes, U F Katz, P Keller, G Kieft, D Kiesling, E N Koffeman, P Kooijman, A Kouchner, V Kulikovskiy, R Lahmann, P Lamare, A Leisos, E Leonora, M Lindsey Clark, A Liolios, C D Llorens Alvarez, D Lo Presti, H Lohner, A Lonardo, M Lotze, S Loucatos, E Maccioni, K Mannheim, A Margiotta, A Marinelli, O Maris, C Markou, J A Martinez-Mora, A Martini, R Mele, K W Melis, T Michael, P Migliozzi, E Migneco, P Mijakowski, A Miraglia, C M Mollo, M Mongelli, M Morganti, A Moussa, P Musico, M Musumeci, S Navas, C A Nicolau, I Olcina, C Olivetto, A Orlando, A Papaikonomou, R Papaleo, G E Păvălas, H Peek, C Pellegrino, C Perrina, M Pfutzner, P Piattelli, K Pikounis, G E Poma, V Popa, T Pradier, F Pratolongo, G Puhlhofer, S Pulvirenti, L Quinn, C Racca, F Raffaelli, N Randazzo, P Rapidis, P Razis, D Real, L Resvanis, J Reubelt, G Riccobene, C Rossi, A Rovelli, M Saldana, I Salvadori, D F E Samtleben, A Sanchez Garcia, A Sanchez Losa, M Sanguineti, A Santangelo, D Santonocito, P Sapienza, F Schimmel, J Schmelling, V Sciacca, M Sedita, T Seitz, I Sgura, F Simeone, I Siotis, V Sipala, B Spisso, M Spurio, G Stavropoulos, J Steijger, S M Stellacci, D Stransky, M Taiuti, Y Tayalati, D Tezier, S Theraube, L Thompson, P Timmer, C Tonnis, L Trasatti, A Trovato, A Tsirigotis, S Tzamarias, E Tzamariudaki, B Vallage, V Van Elewyck, J Vermeulen, P Vicini, S Viola, D Vivolo, M Volkert, G Voulgaris, L Wiggers, J Wilms, E de Wolf, K Zachariadou, J D Zornoza and J Zuniga
Ultrafast magnetization switching in nanoscale magnetic dots

Ultrafast magnetization switching at picosecond and sub-picosecond time scales has tremendous technological potential but still poses numerous questions regarding the underlying quantum mechanical phenomena, including the roles of and interactions between the electrons, spins, and phonons (lattice). At the nanometer-scale dimensions relevant for modern applications, these phenomena become increasingly more pronounced. Until now, helicity-independent all-optical switching (HI-AOS) has been largely limited to amorphous Gd-Fe-Co alloys, for which scaling was challenging due to their relatively low anisotropies. In this work, we demonstrate HI-AOS in amorphous GdCo and scale it to nanometer dimensions while still maintaining uniform out-of-plane magnetization. Single shot HI-AOS is demonstrated in these patterned samples down to a minimum optically detectable magnetic dot size of 200 nm. The ultrafast switching behavior was also confirmed using time-resolved magneto-optic Kerr effect measurements and found to settle to its opposite magnetization state at faster rates for smaller dot diameters, passing a threshold of 75% magnetization reversal within approximately 2 ps for a 200 nm dot compared to approximately 40 ps for a 15 μm pattern. The size dependence of the ultrafast switching is explained in terms of the electron-phonon and spin-lattice interactions.Ultrafast magnetization switching at picosecond and sub-picosecond time scales has tremendous technological potential but still poses numerous questions regarding the underlying quantum mechanical phenomena, including the roles of and interactions between the electrons, spins, and phonons (lattice). At the nanometer-scale dimensions relevant for modern applications, these phenomena become increasingly more pronounced. Until now, helicity-independent all-optical switching (HI-AOS) has been largely limited to amorphous Gd-Fe-Co alloys, for which scaling was challenging due to their relatively low anisotropies. In this work, we demonstrate HI-AOS in amorphous GdCo and scale it to nanometer dimensions while still maintaining uniform out-of-plane magnetization. Single shot HI-AOS is demonstrated in these patterned samples down to a minimum optically detectable magnetic dot size of 200 nm. The ultrafast switching behavior was also confirmed using time-resolved magneto-optic Kerr effect measurements and found to.
Leptonic decays of the tau lepton

In these proceedings we review the SM prediction for the tau leptonic decays, including the radiative $ (\tau \to \ell \lambda \nu \bar \nu ) $ and the five-body $ (\tau \to \ell \ell '\ell '\nu \bar \nu ) $ decay modes, which are among the most powerful tools to study precisely the structure of the weak interaction and to constrain possible contributions beyond the V–A coupling of the Standard Model.
A kernel nonparametric quantile estimator for right-censored competing risks data

ABSTRACT In medical and epidemiological studies, it is often interest to study time-to-event distributions under competing risks that involve two or more failure types. Nonparametric analysis of competing risks is typically focused on the cumulative incidence function or nonparametric quantile function. However, the existing estimators may be very unstable due to their unsmoothness. In this paper, we propose a kernel nonparametric quantile estimator for right-censored competing risks data, which is a smoothed version of Peng and Fine's nonparametric quantile estimator. We establish the Bahadur representation of the proposed estimator. The convergence rate of the remainder term for the proposed estimator is substantially faster than Peng and Fine's quantile estimator. The pointwise confidence intervals and simultaneous confidence bands of the quantile functions are also derived. Simulation studies illustrate the good performance of the proposed estimator. The methodology is demonstrated with two applications of the Supreme Court Judge data and AIDSSI data.
A nuclear ionized gas outflow in the Seyfert 2 galaxy UGC 2024

As part of a high-resolution observational study of feeding and feedback processes occurring in the vicinity of the active galactic nucleus in 40 galaxies, we observed the inner 3${^{\prime\prime}_{. }}$5 × 5 arcsec of the nearby spiral and Seyfert 2 galaxy UGC 2024 with the integral field unit of the Gemini-South Telescope. The observations enabled a study of the stellar and gas kinematics in this region at a spatial resolution of 0${^{\prime\prime}_{. }}$5 (218 pc), and a spectral resolution of 36 km s−1 over the wavelength range 4100–7300 Å. For the strongest emission-lines (H β, [$\rm{O\,{\small III}}$] λ5007 Å, H α, [$\rm{N\,{\small II}}$] λ6584 Å, and [$\rm{S\,{\small II}}$] λλ6717,6731 Å) we derived maps of the flux, radial velocity, and velocity dispersion. The flux distribution and kinematics of the [$\rm{O\,{\small III}}$] emission line are roughly symmetric around the nucleus: the radial velocity is close to systemic over the full field of view. The kinematics of the other strong emission lines trace both this systemic velocity component, and ordered rotation (with kinematic centre 0${^{\prime\prime}_{.}}$2 north-west of the nucleus). The stellar continuum morphology and kinematics are, however, asymmetrical around the nucleus. We interpret these unusual kinematics as the superposition of a component of gas rotating in the galaxy disc plus a ‘halo’ component of highly ionized gas. This halo either traces a quasi-spherical fountain with average radial velocity 200 km s−1, in which case the total nuclear outflow mass and momentum are 2 × 105 M⊙ and 4 × 107 M⊙ km s−1, respectively, or a dispersion supported halo created by a past nuclear starburst.
Full-Waveform Airborne LiDAR Data Classification Using Convolutional Neural Networks

Point cloud classification is one of the most important and time-consuming stages of airborne LiDAR (Light Detection and Ranging) data processing, playing a key role in the generation of cartographic products. This paper describes an innovative algorithm to perform LiDAR point-cloud classification, which relies on Convolutional Neural Networks (CNNs) and takes advantage of full-waveform data registered by modern laser scanners. The proposed method consists of two steps. First, a simple CNN is used to preprocess each waveform, providing a compact representation of the data. By exploiting the coordinates of the points associated with the waveforms, output vectors generated by the first CNN are then mapped into an image that is subsequently segmented by a Fully Convolutional Network (FCN): a label is assigned to each pixel and, consequently, to the point falling in the pixel. In this way, spatial positions and geometrical relationships between neighboring data are taken into account. These particular architectures allow to accurately identify even challenging classes such as power line and transmission tower.
Millimeter-Wave Substrate Integrated Gap Waveguide Leaky-Wave Antenna for WiGig Applications

A new design of an H-polarized leaky-wave antenna (LWA) based on the substrate integrated gap waveguide (SIGW) technology is introduced. The antenna shows good scanning capability from the backward to a near broadside direction (from −36° to −15°) with a peak gain of 17.67 dBi within 1.3 dB variation over 57–64 GHz and a wide impedance bandwidth. A pair of LWAs is parallelly excited through a Y-power divider and terminated with the other end in series providing an additional 3 dB gain compared to the single LWA. Both designs show over 88% radiation efficiency and over 86% total efficiency. The fabricated prototypes of both antennas are made of multi-layered PCB technology. The measurement results show a good agreement with the simulations.
Robust inference for random fields and latent models

This thesis delivers a new framework for the robust parametric estimation of random fields and latent models through the use of the wavelet variance. By proposing a new M-estimation approach for the latter quantity and delivering results on the identifiability of a wide class of latent models, the thesis finally delivers a computationally efficient and statistically sound method to estimate complex models even when the data is contaminated. The results of this work are then implemented within a new statistical software which is also presented in this thesis, with a focus on its usefulness for inertial sensor calibration.
THE EFFECT OF LEADERSHIP STYLE, INDIVIDUAL CAPABILITY, AND MOTIVATION ON AUDITOR PERFORMANCE WITH REWARD AS THE MODERATING VARIABLE.

Siti Nur Reskiyawati Said 1 , Andi Kusumawati 2 And Sabir 2 . 1. Magister of Accounting, Faculty of Economics and Business, Hasanuddin University, Indonesia. 2. Department of Accounting, Faculty of Economics and Business, Hasanuddin University, Indonesia. Manuscript Info Abstract . Manuscript History Received: 08 March 2019 Final Accepted: 10 April 2019 Published: May 2019
A pseudo-spectrum analysis of galaxy-galaxy lensing

We present the application of the pseudo-spectrum method to galaxy–galaxy lensing. We derive explicit expressions for the pseudo-spectrum analysis of the galaxy-shear cross-spectrum, which is the Fourier space counterpart of the stacked galaxy–galaxy lensing profile. The pseudo-spectrum method corrects observational issues such as the survey geometry, masks of bright stars and their spikes, and inhomogeneous noise, which distort the spectrum and also mix the E-mode and the B-mode signals. Using ray-tracing simulations in N-body simulations including realistic masks, we confirm that the pseudo-spectrum method successfully recovers the input galaxy-shear cross-spectrum. We also show that the galaxy-shear cross-spectrum has an excess covariance relative to the Gaussian covariance at small scales (k ≳ 1h Mpc^−1) where the shot noise is dominated in the Gaussian approximation. We find that the excess is consistent with the expectation from the halo sample variance (HSV), which originates from the matter fluctuations at scales larger than the survey area. We apply the pseudo-spectrum method to the observational data of Canada–France–Hawaii Telescope Lensing survey shear catalogue and three different spectroscopic samples of Sloan Digital Sky Survey Luminous Red Galaxy, and Baryon Oscillation Spectroscopic Survey CMASS and LOWZ galaxies. The galaxy-shear cross-spectra are significantly detected at the level of 7–10σ using the analytic covariance with the HSV contribution included. We also confirm that the observed spectra are consistent with the halo model predictions with the halo occupation distribution parameters estimated from previous work. This work demonstrates the viability of galaxy–galaxy lensing analysis in the Fourier space.