Miracle-dz/UniFAR-FTUs huggingface dataset:
Remote maintenance assistance using real-time augmented reality authoring

Maintenance operations and lifecycle engineering have largely been considered one of the most expensive and time-consuming components for industrial equipment. Numerous organizations continually devote large quantities of resources towards maintaining equipment. As such, any optimizations that would reduce maintenance errors and expenses could lead to substantial time and cost savings. Unfortunately, there are often not enough specialists to meet the demand, forcing localized technicians to perform on-site maintenance on equipment outside their area of expertise. Augmented reality (AR) is one technology that has already been shown to improve the maintenance process. While powerful, AR has its own set of challenges, from content authoring to spatial perception. This work details a system that puts both the power of AR and the knowledge of a specialist directly into the hands of an on-site technician. An application was developed that enables a specialist to deliver AR instructions in real-time to assist a technician performing on-site maintenance. Using a novel and simplified authoring interface, specialists can create AR content in real-time, with little to no prior knowledge of augmented reality or the system itself. There has been ample research on different AR-supported processes, such as real-time authoring, video monitoring, and off-site assistance. However, much less work has been done to integrate them and leverage existing personnel knowledge to both author and deliver real-time AR instructions. This work details the development and implementation of such a system. A technical evaluation was also performed to ensure real-time connectivity in geographically distributed environments. Three network configurations were evaluated. A high-latency high-bandwidth network was used to represent a typical modern maintenance facility. A
Podoplanin ( D 2-40 ) is a Reliable Marker of Urinary Bladder

Podoplanin, D2-40, has been described in a variety of normal and neoplastic tissues. It is often used for highlighting lymphatics. We evaluated the expression of podoplanin in α-smooth muscle actinpositive myofibroblasts producing the suburothelial layer in tunica propria of the urinary bladder that have some similar features with telocytes. Our results showed that these cells demonstrate distinct D2-40 immunoreactivity from telocytes occurring in the renal pelvis and ureter. We observed positive reaction not only in bioptic specimens from women with interstitial cystitis, but also in a control group of women and men treated for pathological bladder lesion different from interstitial cystitis. It is interesting that identical staining reaction was observed in the ureters only exceptionally. In addition, we examined samples from myofibroblastic tumoriform lesions of soft tissue such as nodular fascitis and fibromatosis (desmoid) and we obtained negative results. It means that the so-called myofibroblasts of urinary bladder tunica propria have a unique immunophenotype that has probably not been described until now. Our findings suggest that D2-40 can be used as a complementary immunostainer to α-smooth muscle actin on urinary bladder biopsies from patients with interstitial cystitis. The role of D2-40 as an immunohistochemical marker is still being investigated. Received May 2, 2014. Accepted October 16, 2014. This work was supported by grants IGA CR NT 12137-5 and Charles University in Prague, project PRVOUK-P27/LF1/1. Corresponding author: Ctibor Povýšil, Institute of Pathology, First Faculty of Medicine, Charles University in Prague and Ge neral University Hospital in Prague, Studničkova 2, 128 52 Prague 2, Czech Republic. E-mail: ctibor.povysil@1f1.cuni. cz Abbreviations: ABC – avidin-biotin complex, IC – interstitial cystitis, ICC – interstitial cells of Cajal, HE – haematoxylin and
Consistent Variable Selection of the l 1 − Regularized 2 SLS with High-Dimensional Endogenous Regressors and Instruments

Under additional assumptions, it is possible for β̂H2SLS to achieve perfect variable selection when β∗ is exactly sparse with at most k2 non-zero coefficients, as we will see in the following result (Theorem 2.3). For notational simplicity, we assume in Theorem 2.3 that ρZ 1, κ1 1, κ̄1 1, ρX∗ 1, maxj=1,. ,p |π∗ j,Sc τ j |1 (k1 ∨ 1) √ log(d∨p) n . Here we summarize the notations to be used. The lq−norm of a vector v ∈ m × 1 is denoted by |v|q, 1 ≤ q ≤ ∞; let J(v) = {j ∈ {1, . ,m} | vj 6= 0}. The cardinality of a set J ⊆ {1, . ,m} is denoted by |J |. For a matrix A, write |A|∞ := maxi,j |aij | to be the elementwise l∞−norm of A. The l2−operator norm of the matrix A is denoted by ||A||2. The l∞ matrix norm of A is denoted by ||A||∞ := maxi ∑ j |aij |. For a square matrix A, denote its minimum eigenvalue and maximum eigenvalue by λmin(A) and λmax(A), respectively. For functions f(n) and g(n), write f(n) % g(n) to mean that f(n) ≥ cg(n) for a universal constant c ∈ (0, ∞) and similarly, f(n) g(n) to mean that f(n) ≤ cg(n) for a universal constant c ∈ (0, ∞); f(n) g(n) when f(n) % g(n) and f(n) g(n) hold simultaneously. Denote max{a, b} by a ∨ b and min{a, b} by a ∧ b.
Detecting Superior Mutual Fund Managers: Evidence from Copycats

We examine the ex ante ability of investors to identify superior mutual fund managers among the investor set likely most able, and with the greatest incentive to do so, their rivals. Identifying actual copycat funds via comparisons of trading in consecutive periods, we find little evidence to suggest that managers are able to detect superior funds. Copycats select funds with high prior performance and investment inflows, and the performance of the target fund reverses following copying initiation. If superior managers exist, our results suggest that the source of skill lies in private information obtained by these managers. These results are consistent with information models indicating that private, but not public, information can be profitable.
A Combined RGB and Depth Descriptor for SLAM with Humanoids

In this paper, we present a visual simultaneous localization and mapping (SLAM) system for humanoid robots. We introduce a new binary descriptor called DLab that exploits the combined information of color, depth, and intensity to achieve robustness with respect to uniqueness, reproducibility, and stability. We use DLab within ORB-SLAM, where we replaced the place recognition module with a modification of FAB-MAP that works with newly built codebooks using our binary descriptor. In experiments carried out in simulation and with a real Nao humanoid equipped with an RGB-D camera, we show that DLab has a superior performance in comparison to other descriptors. The application to feature tracking and place recognition reveal that the new descriptor is able to reliably track features even in sequences with seriously blurred images and that it has a higher percentage of correctly identified similar images. As a result, our new visual SLAM system has a lower absolute trajectory error in comparison to ORB-SLAM and is able to accurately track the robot's trajectory.
Regular black hole motion and stellar orbital resonances

The motion of a black hole about the centre of gravity of its host galaxy induces a strong response from the surrounding stellar population. We treat the case of a harmonic potential analytically and show that half of the stars on circular orbits in that potential shift to an orbit of lower energy, while the other half receive a positive boost and recede to a larger radius. The black hole itself remains on an orbit of fixed amplitude and merely acts as a catalyst for the evolution of the stellar energy distribution functionf(E). We show that this effect is operative out to a radius of approximately three to four times the hole's influence radius, R bh . We use numerical integration to explore more fully the response of a stellar distribution to black hole motion. We consider orbits in a logarithmic potential and compare the response of stars on circular orbits, to the situation of a 'warm' and 'hot' (isotropic) stellar velocity field. While features seen in density maps are now wiped out, the kinematic signature of black hole motion still imprints the stellar line-of-sight mean velocity to a magnitude ≃ 13 per cent the local rms velocity dispersion a. A study in three dimensions suggests a reduced effect for polar orbits.
FIRST-ORDER ASYMPTOTIC THEORY FOR PARAMETRIC MISSPECIFICATION TESTS OF GARCH MODELS

This paper develops a framework for the construction and analysis of parametric misspecification tests for generalized autoregressive conditional heteroskedastic (GARCH) models, based on first-order asymptotic theory. The principal finding is that estimation effects from the correct specification of the conditional mean (regression) function can be asymptotically nonnegligible. This implies that certain procedures, such as the asymmetry tests of Engle and Ng (1993, Journal of Finance 48, 1749–1777) and the nonlinearity test of Lundbergh and Teräsvirta (2002, Journal of Econometrics 110, 417–435), are asymptotically invalid. A second contribution is the proposed use of alternative tests for asymmetry and/or nonlinearity that, it is conjectured, should enjoy improved power properties. A Monte Carlo study supports the principal theoretical findings and also suggests that the new tests have fairly good size and very good power properties when compared with the Engle and Ng (1993) and Lundbergh and Teräsvirta (2002) procedures.
ETHNOARCHAEOLOGY AS A TOOL FOR A HOLISTIC UNDERSTANDING OF MUDBRICK DOMESTIC ARCHITECTURE IN ANCIENT EGYPT

Resumen: El objetivo de este articulo es el de ofrecer una vision general de la investigacion doctoral finalizada recientemente (Correas-Amador, 2013), asi como presentar un resumen de los resultados obtenidos. La investigacion consistio en un estudio etnoarqueologico de la arquitectura domestica de adobe en el Antiguo Egipto, entre el Reino Antiguo y el Tercer Periodo Intermedio (c. 2575 - 664 a.C.). Dicho estudio se valio tanto del analisis arquitectonico de casas de adobe modernas como de entrevistas a sus ocupantes en diferentes areas de Egipto. Como resultado, se extrajeron una serie de variables con las que se construyo una metodologia para el analisis e interpretacion de las casas de adobe en el Antiguo Egipto. Palabras clave: Egipto, arquitectura domestica, adobe, etnoarqueologia. Abstract The aim of this article is to offer an overview of doctoral research recently completed (Correas-Amador, 2013) and present a summary of results obtained. The research focused on an ethnoarchaeological study of ancient Egyptian mudbrick houses, from the Old Kingdom period to the Third Intermediate Period (c. 2575 - 664 BC), using both survey and interview data from modern mudbrick houses in different areas of rural Egypt. A series of key variables were extracted from this study, which were tested on ancient remains and articulated into a rationale for the analysis and interpretation of ancient Egyptian mudbrick houses. Keywords: Egypt, domestic architecture, mudbrick, ethnoarchaeology.
Explicitly modeling case improves neural dependency parsing

Neural dependency parsing models that compose word representations from characters can presumably exploit morphosyntax when making attachment decisions. How much do they know about morphology? We investigate how well they handle morphological case, which is important for parsing. Our experiments on Czech, German and Russian suggest that adding explicit morphological case—either oracle or predicted—improves neural dependency parsing, indicating that the learned representations in these models do not fully encode the morphological knowledge that they need, and can still benefit from targeted forms of explicit linguistic modeling.
Relative importance of weather and climate on wildfire growth in interior Alaska

Efforts to quantify relationships between climate and wildfire in Alaska have not yet explored the role of higher-frequency meteorological conditions on individual wildfire ignition and growth. To address this gap, meteorologi- cal data for 665 large fires that burned across the Alaskan interior between 1980 and 2007 were assessed to determine the respective influence of higher-frequency weather and lower-frequency climate, in terms of both antecedent and post- ignitionconditionsonfiregrowth.Antecedentclimateexhibitednodiscernableinfluenceoneventualfiresize. Incontrast, fire size was sensitive to weather in the days to weeks following ignition, particularly the post-ignition timing of precipitation. Prolonged periods of warm and dry conditions coincident with blocking that persists for several weeks after ignition enabled growth of large wildfires, whereas the return of wetting precipitation generally within a week after ignition inhibited growth of smaller wildfires. These results suggest that daily weather data are a critical predictor of fire growth and large fire potential and encourage their use in fire management and modelling.
Measuring goal attainment within a community-based multidisciplinary rehabilitation setting for people with spinal cord injury

Aims: to describe and evaluate the multidisciplinary goal attainment measure (MGAM), a method for measuring goal attainment within a community-based multidisciplinary rehabilitation setting and to explore the relationships between the multidisciplinary goal attainment measure and other standardized outcome measures. Methods: De-identified data was collected retrospectively from the records of 250 individuals with spinal cord injury who were administered the multidisciplinary goal attainment measure (goal performance and goal satisfaction), functional independence measure, clinical outcomes variables scale and a visual analogue measure of quality of life at commencement and completion of community rehabilitation. results: the multidisciplinary goal attainment measure demonstrated sensitivity to change in goal performance and satisfaction over time. Goal performance and goal satisfaction were highly correlated but appeared to operate as Melissa Bianca Kendall1,2, Melissa Anne Wallace3 Affiliations: 1PhD, Senior Research Officer, Acquired Brain Injury Outreach Service and Transitional Rehabilitation Program, Princess Alexandra Hospital, Brisbane, Queensland, Australia; 2Associate Professor, School of Human Services and Social Work, Griffith University, Logan Campus, Meadowbrook, Queensland, Australia; 3BOccThy, Occupational Therapist, Transitional Rehabilitation Program, Princess Alexandra Hospital, Brisbane, Queensland, Australia. Corresponding Author: Melissa Bianca Kendall, Senior Research Officer, ABIOS and TRP, PO Box 6053, Buranda QLD Australia 4102; Email: mkkayzac12@gmail.com Received: 21 December 2015 Accepted: 20 April 2016 Published: 09 May 2016 separate constructs. Goal performance and goal satisfaction correlated with function and mobility at admission to community rehabilitation but not at completion of community rehabilitation. Goal performance and satisfaction did not discriminate across lesion level or completeness of injury. conclusion: Outcome measurement in the community setting requires the use of measures that are appropriate and relevant to the goal-directed nature of rehabilitation in this setting. While goal attainment has been measured in the past, the multidisciplinary goal attainment measure offers an alternative in the multidisciplinary rehabilitation setting but requires further validation and administration to different clinical populations.
Fuzzy-Gibbs latent Dirichlet allocation model for feature extraction on Indonesian documents

Latent Dirichlet Allocation is a topic-based feature extraction method that uses reasoning to find semantic relationship in corpus. Although Latent Dirichlet Allocation is very powerful in handling very large data sets, but it has a very high complexity along with increasing number of document to reach convergence. Latent Dirichlet Allocation generates probability for all topics in a document, which it contains uncertainty, so its relationship with number of iterations needs to be analyzed. In this paper, Latent Dirichlet Allocation modified by adding fuzzy logic in Gibbs sampling inference algorithm. Its purpose is to analyze the effect of fuzzy logic in handling uncertainty of the occurrence all topics in a document that affect number of iteration in reasoning. Fuzzy-Gibbs Latent Dirichlet Allocation algorithm is implemented on text data of Indonesian documents. Testing performed on three different sizes of data to determine the effect of the number of document to the number of iteration. The algorithm performance was also measured using Perplexity, Precision, Recall and F-Measure. 404 Putu Manik Prihatini et al. The test results show that Fuzzy-Gibbs Latent Dirichlet Allocation algorithm can reach convergence in a fewer iteration and has a better performance compared to Gibbs Sampling Latent Dirichlet Allocation algorithm.
ACEnet: Approximate Thinning-Based Judicious Network Control for Energy-Efficient Ultra-Dense Networks

This study considers a ultra-dense network (UDN) in which the enormous number of base stations (BSs) are densely deployed to support the massive amount of data traffic generated by many mobile devices. In this paper, we propose an approximate thinning-based judicious network control algorithm for energy-efficient UDNs (ACEnet) to improve the area throughput while diminishing the network energy consumption. The main idea of the proposed ACEnet algorithm is to judiciously adjust the modes of the BSs according to active-user density based on the thinning operation in stochastic geometry framework. The stochastic geometry framework is exploited to analyze the performance of the proposed algorithm, which includes the signal-to-interference-plus-noise ratio (SINR), average achievable rate of users, area throughput, and energy efficiency. Through intensive simulations, it shows that the proposed algorithm outperforms conventional algorithms. We also demonstrate that the analytical results are well matched with the simulation results.
The Impact of Vitamin B 6 Supplementation on Experimental Colitis and Colonic Mucosal DNA Content in Female Rats Fed High Sucrose Diet

Inflammatory Bowel Disease (IBD) is a chronic replacing disorder of the gastrointestinal tract by inflammation and tissue damage. The present study aimed to evaluate the possible efficacy of vitamin B6, and its protective mechanisms on colitic female rat model fed on diet containing 30% sucrose. Rats were divided into 3 experimental groups as colitic, colitic and sucrose 30%, colitic and sucrose 30% and vitamin B6 as pyridoxal-5-phosphate (60mg/kg diet) beside a normal control group. Colitis was induced in experimental groups by intrarectal injection of 10mg 2,4,6 trinitrobenzen sulfonic acid (TNBS) dissolved in 50% ethanol. Colonic injury and inflammation were evaluated by a significant increase in colonic enzymatic activities of myeloperoxidase (MPO) and alkaline phophatase (ALP) and colonic body weight ratio. On the other hand, colonic glutathione-S-transferase GST and glutathione peroxidase GPx activities as well as serum nitric oxide NO levels showed a significant increase demonstrating oxidative stress. Results showed that, addition of sucrose on the diet of colitic rats increased the colonic inflammation as represented by a marked increase in colonic enzymatic activities of myeloperoxidase (MPO) and alkaline phosphates (ALP) and colonic body weight ratio, whereas no significant change was observed in colon glutathione-S-transferase GST and glutathione peroxidase GPx activities in sucrose fed group when compared to colitic group. Results showed that, vitamin B6 treatment was proved to be efficient in mitigating the experimental colitis as it significantly reduced the colon/body weight ratio and myeloperoxidase (MPO) activity and restored colonic glutathione-S-transferase GST and glutathione peroxidase GPx activities and serum nitric oxide NO level. It is clear that TNBS is a potent DNA damaging agent and alters colon DNA content. Supplementation of sucrose in the diet of colitic rats induced additional DNA changes in the colon mucosal cells of rats, while vitamin B6 supplementation protects colon DNA against damage.
Working Papers / Documents de travail

A large literature characterizes urbanisation as the result of productivity growth attracting rural workers to cities. We incorporate economic geography elements into a growth model and suggest that causation runs the other way: when rural workers move to cities, the resulting urbanisation produces technological change and productivity growth. Urban density leads to knowledge exchange and innovation, thus creating a positive feedback loop between city size and productivity that sets off sustained economic growth. The model is consistent with the fact that urbanisation rates in Western Europe, and notably in England, reached unprecedented levels by the mid-18th century, the eve of the Industrial Revolution.
Applications of a Constrained Inversion and an Extended Kriging Method to Improve Source, Path, and Site Corrections for Regional Seismic Phases

Abstract : Objectives are to develop and apply two methods to improve source and path corrections for regional seismic phases. In first, we estimate and constrain source parameters using Brune model fits to relative spectra of regional seismic phases for event pairs with similar locations and focal mechanisms, but different seismic moments. We then use source-corrected spectra to estimate geometrical spreading, Q, and site terms for Pn, Pg, Sn, and Lg. We performed preliminary study using waveform cross-correlations to find suitable pairs. Using Preliminary Determination of Epicenters catalog, we formed a list of candidate pairs and computed waveform cross-correlations to find pairs of similar events. We computed and fit network-median relative spectra for 3,600 pairs. We automated processing steps, reviewing and refining results. We merged results with previous to obtain more extensive estimates of source corner frequencies versus moment and stress-drop parameters. We generated kriged grids of stress drop and associated uncertainties. We fit combined distance and site terms to the source-corrected spectra, showing robust estimates of these effects are possible by first constraining source terms. Second method, an extension to Bayesian kriging, provides robust path corrections and uncertainties for regional phase amplitudes, that properly treats localized calibration events that may have anomalous, correlated amplitudes. Clusters of anomalous reference events can significantly bias kriged amplitude corrections and uncertainties. Fisk and McCartor developed a fundamental improvement to kriging methodology, incorporating an additional correlation length to treat similar focal mechanisms, and tested the method on large samples of underground nuclear explosions and earthquakes. Application to worldwide datasets indicates power of hypothesis test to reject earthquakes as explosions is marginally reduced, without miscategorizing known explosions and providing robust treatment of clu