Miracle-dz/UniFAR-FTUs huggingface dataset:
Experimental Output Regulation of Linear Motor Driven Inverted Pendulum With Friction Compensation

Over the past few decades, the nonlinear output regulation (NOR) theory has attracted extensive attentions in control society. However, few experimental results have been reported about the NOR theory. This article first presents experimental results on discrete-time NOR problem for a linear motor driven inverted pendulum (LMDIP) system. To solve this problem, it is essential to find the solution of the complicated discrete regulator equations (DREs). Moreover, the friction force commonly exists in mechanical systems and cannot be neglected for control systems requiring high precision tracking performance. We present a novel discrete-time controller by combining neural network (NN) approach and friction-feedforward compensation mechanism. Finally, we verify the proposed control algorithm by experiment and make some comparisons with the linear controller.
The Free Kick Kinematics of Elite Football Players

We have considered the kinematics parameters for the free instep kick of the elite footballer (Cristiano Ronaldo), in the pace of the swing leg movement and the supporting leg with linear velocity measurement, angular displacement and angular velocity of the joints (ankle, knee, hip). We used the cinematographically method through Kinovea-0.8. 26-win32. exe and Photo Suite 4 Platinum Editor from MGI Software of filming of a free instep kick (10. LaLiga, vs. Villarreal, 21/02/2010), and where as the caliber size we have taken the diameter of the ball, creating its kinograms in stages of movement. We have especially analyzed the Approach phase which Cristiano Ronaldo traverses at a distance of 4.0 m, which is passed in 3 steps (1.14 m; 1.72 m; 2.75 m). Angle of approach is 40 degrees, the free-kick distance is 30 m. During the contact of foot/ball, knee angle of the swing leg is 132 degrees (support leg 153 deg), while the ball is hit by a linear velocity of ankle joint 17.5 m/s, giving the ball a speed of 13.7 m/s. Result of this research is the way of execution the second step of approach phase which Cristiano Ronaldo is performing with the placement of the right foot in the ground only with the tip of the fingers and not with the whole foot, passing quickly backs winging phase, and phase of hip flexion and knee extension during downward motion.
Aerial Seismology Using Balloon-Based Barometers

Seismology on Venus has long eluded planetary scientists due to extreme temperature and pressure conditions on its surface, which most electronics cannot withstand for mission durations required for ground-based seismic studies. We show that infrasonic (low-frequency) pressure fluctuations, generated as a result of ground motion, produced by an artificial seismic source known as a seismic hammer, and recorded using sensitive microbarometers deployed on a tethered balloon, are able to replicate the frequency content of ground motion. We also show that weak, artificial seismic activity thus produced may be geolocated by using multiple airborne barometers. The success of this technique paves the way for balloon-based aero-seismology, leading to a potentially revolutionary method to perform seismic studies from a remote airborne station on the earth and solar system objects with substantial atmospheres such as Venus and Titan.
Method of Construction of Material That Work on All the Range of Wavelengths or Frequency or Energy of Photon

The main objective of this research work is to decrease work function of any given element or compound or material. To decrease the work function of the given material we have to decrease the bandwidth between conduct band and valance band. Because according to definition of work function, the amount of energy that required the remove the electron from valance band of an atom and it is also called ionization energy. These all energies depend upon the band width that is greater than the band width greater energy required to remove the electron from the surface, and less than the band width and lesser amount of energy required to remove the electron from of materials. In this work we are trying to give an theoretical model or relation, how to decrease the work function of a material by applying external pressure on atoms and doping of the material that has screening or shielding effects. With the help of this model we can increase the efficiency of material used in solar cell that is cell work for all range of frequencies and by construction material bases on this we can increase the efficiency of solar cell or any type of material working solar cell principle.
BayesFit: A Tool for Modeling Psychophysical Data Using Bayesian Inference

BayesFit is a module for Python that allows users to fit models to psychophysical data using Bayesian inference. The module aims to make it easier to develop probabilistic models for psychophysical data in Python by providing users with a simple API that streamlines the process of defining psychophysical models, obtaining fits, extracting outputs, and visualizing fitted models. Our software implementation uses numerical integration as the primary tool to fit models, which avoids the complications that arise in using Markov Chain Monte Carlo (MCMC) methods [1]. The source code for BayesFit is available at https://github.com/slugocm/bayesfit and API documentation at http://www.slugocm. ca/bayesfit/ . This module is extensible, and many of the functions primarily rely on Numpy [2] and therefore can be reused as newer versions of Python are developed to ensure researchers always have a tool available to ease the process of fitting models to psychophysical data.
Francis-99: Coupled simulation of the resonance effects in runner channels

A resonance phenomenon is observed experimentally in the runner channels of the Francis-99 model turbine runner. An incompressible CFD simulation is unable to simulate this. Two different coupled physics schemes are therefore presented to investigate if such effects can be replicated through simulations. The first procedure is a fully coupled acoustic-structural simulation, where the surrounding fluid is modelled using acoustic theory. This includes added mass effects and pressure propagation, but not advective and viscous effects. The second procedure is a quasi two-way coupled Fluid-Structure approach based on modal decomposition of the structural domain. In this procedure, the incompressible Navier-Stokes equations are solved along with the structural deformation. The fully coupled acoustic-structural approach does successfully exhibit a magnification of the pressure through the runner channels, indicating a resonance effect. The exact values of the acoustic pressure amplitudes are highly sensitive to the damping, the blade connection to the shroud close to the trailing edge, and more. The second procedure manages to simulate the structural deformation with the correct nodal diameters excited by the Rotor Stator Interaction, all inside the fluid solver. The pressure amplitudes however, does not exhibit the desired resonance effect, likely due to the assumption of incompressible fluid.
Optical conductivity of metal alloys with residual resistivities near or above the Mott-Ioffe-Regel limit

Most interesting examples of violations of the Mott-Ioffe-Regel (MIR) resistivity limit are found in materials with strong electronic correlations that are not well understood by theory. We demonstrate that first principles theory can predict the experimentally observed frequency dependence of the optical conductivity for a novel class of metals where the residual resistivity is near or above the MIR limit, which we define as a ``bad metal. '' The predicted optical conductivity of a NiCoCr alloy is in good agreement with experiment. It is demonstrated that the width of the Drude peak describing the low-frequency part of optical conductivity is comparable to the Fermi energy. The latter, together with a mean free path comparable to the interatomic distance, indicates the absence of well-defined quasiparticles. In contrast to traditional bad metals with strong electron-electron interactions, both the high resistivity and the large width of the Drude peak in these alloys result from strong scattering on disordered atomic potentials that can be understood using modern density functionals.
Geodesic Distance on Gaussian Manifolds to Reduce the Statistical Errors in the Investigation of Complex Systems

In the last years the reputation of medical, economic, and scientific expertise has been strongly damaged by a series of false predictions and contradictory studies. The lax application of statistical principles has certainly contributed to the uncertainty and loss of confidence in the sciences. Various assumptions, generally held as valid in statistical treatments, have proved their limits. In particular, since some time it has emerged quite clearly that even slightly departures from normality and homoscedasticity can affect significantly classic significance tests. Robust statistical methods have been developed, which can provide much more reliable estimates. On the other hand, they do not address an additional problem typical of the natural sciences, whose data are often the output of delicate measurements. The data can therefore not only be sampled from a nonnormal pdf but also be affected by significant levels of Gaussian additive noise of various amplitude. To tackle this additional source of uncertainty, in this paper it is shown how already developed robust statistical tools can be usefully complemented with the Geodesic Distance on Gaussian Manifolds. This metric is conceptually more appropriate and practically more effective, in handling noise of Gaussian distribution, than the traditional Euclidean distance. The results of a series of systematic numerical tests show the advantages of the proposed approach in all the main aspects of statistical inference, from measures of location and scale to size effects and hypothesis testing. Particularly relevant is the reduction even of 35% in Type II errors, proving the important improvement in power obtained by applying the methods proposed in the paper. It is worth emphasizing that the proposed approach provides a general framework, in which also noise of different statistical distributions can be dealt with.
Numerical investigation of hydroacoustic pressure pulsations due to rotor-stator interaction in the Francis-99 turbine

The paper deals with the numerical simulation of the flow in the Francis-99 hydraulic turbine at three different problem formulations, namely, the application of the method of rotating coordinate system, sliding mesh model, and consideration of a compressible fluid. The pulsations intensity and pressure pulsation spectra obtained by numerical simulation and experimentally are compared. It is shown that the simulation of a problem considering compressible fluid, and that conducted by the sliding mesh method gives significantly greater pressure amplitudes. It is also shown that the precessing vortex core is a source of pressure waves in the entire turbine flow path.
Inventory Model for Three–parameter Weibull Deterioration and Partial Backlogging

This paper develops an economic order quantity inventory model for time dependent three parameters Weibull deterioration. Partially backlogged shortages are considered. The demand rate is deterministic and time dependent. The rate of deterioration is time dependent. We have derived the most favorable order quantity model by minimizing the entire inventory cost. A numerical illustration has been carried out to evaluate the result of parameters on decision variables and the total average cost of the model. The research focus of this paper is to derive the optimum order quantity by minimizing the total inventory cost.
3D simulation of a 500 kg UO2 melt in a cold crucible induction furnace

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Investigación epidemiológica en el autismo: una visión integradora

Introduccion. Sesenta anos despues de las primeras descripciones del Autismo, todavia hoy siguen vigentes aquellos criterios diagnosticos basados en la observacion clinica. El Instituto de Salud Carlos III creo hace dos anos el Grupo de Estudio en los Trastornos del Espectro Autista (GETEA), con la intencion de evaluar el estado de la investigacion de los TEA en Espana, estableciendo lazos estrechos de colaboracion con las asociaciones y creando una forma de trabajar mas coordinada y cercana a la realidad que viven diariamente las familias. Objetivo y desarrollo. El objetivo de la revision es el actualizar ciertos conocimientos sobre la distribucion de los determinantes de los TEA, es decir, sobre la epidemiologia de estos trastornos, y a su vez despertar una mayor inquietud entre los profesionales que estan mas estrechamente relacionados con el estudio de los trastornos generalizados del desarrollo. Las nuevas herramientas diagnosticas permiten alcanzar un grado mayor de certeza en el complicado proceso de evaluacion de un caso con sintomas de autismo; sin embargo, dada la efectividad de la atencion temprana y su influencia en el pronostico, es imprescindible la implantacion de programas poblacionales de cribado de los TEA, utilizando para ello cuestionarios del tipo Modified Check List for Autism in Toddlers (M-CHAT), seguido de varios niveles diagnosticos, de modo que permitan reducir los falsos positivos y aumentar los verdaderos positivos.
Polarization-Reconfigurable Leaky-Wave Antenna With Continuous Beam Scanning Through Broadside

A simple single-layer reconfigurable leaky-wave antenna (LWA) is presented that has polarization agility and beam-scanning functionality. This LWA system realizes a scanned beam that can be switched between all of its linear polarization (LP) and circular polarization (CP) states using only one dc biasing source. A slot-loaded substrate-integrated waveguide (SIW)-based LWA is first explored to attain CP performance with continuous beam scanning through broadside. This CP LWA realizes a measured CP performance with a 3 dB gain variance within 2.75–3.35 GHz for scan angles ranging from −28.6° to +31.5°. A row of shorted stubs is then incorporated into the CP LWA to obtain similar LP performance. Finally, by introducing p-i-n diodes into this LP LWA configuration to facilitate reconfigurable connections between the main patch and the shorted stubs, the radiated fields can be switched between all of its CP and LP states. The measured results of all three antennas confirm their simulated performance. It is demonstrated that the main beam of the polarization-reconfigurable LWA can be scanned from −31.5° to +17.1° with gain variations between 9.5 and 12.8 dBic in its CP state and from −34.3° to +20° with them between 7.8 and 11.7 dBi in its LP state.
Design and evaluation of a vertically integrated passive two‐dimensional beam switching antenna array at 60 GHz

A millimeter‐wave two‐dimensional (2D) beam switching planar microstrip patch antenna array excited by a 4 × 4 substrate‐integrated waveguide Butler matrix (BM) is presented in this article. The BM architecture is modified to feed the planar array in a vertically integrated multilayer design to minimize parasitic effects due to junction discontinuity and reduce the radio frequency (RF) front‐end footprint. This feed architecture enables the designer to control the phased array inputs to achieve a set of beam directions in four quadrants of radiation space at a desired elevation angle. For verification of beam switching via over‐the‐air measurements at 60 GHz, a bench‐top anechoic chamber with proper transmitter and receiver antenna positioners was designed and fabricated using in‐house laboratory resources. 2D beam steering was confirmed in the intended four quadrants of radiation space at ϕ0 = 50°, 140°, 220°, and 300° and θ0 = 30° ± 5°, meeting the design specifications with a very good margin. Each switched beam demonstrated between 5 and 6 dBi gain at 60 GHz, which is within 1 dB deviation from the simulated results.
Capacitive DC links in power electronic systems-reliability and circuit design

Capacitive DC links are an important part in voltage source power electronic converters, which contribute to cost, size and failure rate on a considerable scale. With more and more stringent constraints brought by industrial applications, the capacitive DC links encounter reliability aspect challenges. This paper presents a review on the reliability design and improvement of capacitive DC links from three aspects: 1) Quantitative reliability prediction for DC-link capacitors; 2) Reliability-oriented design of passive DC-link capacitor banks; and 3) Advanced active DC links to exceed the limits of passive DC-link capacitors. Key solutions for each aspect are highlighted and discussed with case studies. This review serves to provide a picture of state-of-the-art research on the reliability design and improvement of capacitive DC links, highlight the key milestones in this area, and identify the corresponding challenges and future research directions.
AN INTUITIVE INTERFACE FOR HUMAN PERFORMANCE TRACKING WITH SIMULATED CHARACTERS

One of the main challenges with tracking a live actor with a simulated character is modeling or specifying the character’s mechanical system, together with the control parameters required to compute the torques. This process is so intricate, that it is mainly done by researchers and engineers—leaving this technology out of reach for casual users and digital artists. In this paper, we introduce a user-friendly interface that allows casual users to quickly model the character’s mechanical system, together with the control parameters for tracking a live actor. A side effect of tracking with a simulated character is that free limbs such as tails are automatically activated into the full body control, instead of remaining static or movin g in a predetermined fashion. We show various motion examples with two biped characters: a raptor dinosaur, as well as an alien.
Infinite Horizon Average Cost Dynamic Programming Subject to Total Variation Distance Ambiguity

We analyze the infinite horizon minimax average cost Markov Control Model (MCM), for a class of controlled process conditional distributions, which belong to a ball, with respect to total variation distance metric, centered at a known nominal controlled conditional distribution with radius $R\in [0,2]$, in which the minimization is over the control strategies and the maximization is over conditional distributions. Upon performing the maximization, a dynamic programming equation is obtained which includes, in addition to the standard terms, the oscillator semi-norm of the cost-to-go. First, the dynamic programming equation is analyzed for finite state and control spaces. We show that if the nominal controlled process distribution is irreducible, then for every stationary Markov control policy the maximizing conditional distribution of the controlled process is also irreducible for $R \in [0,R_{max}]$. Second, the generalized dynamic programming is analyzed for Borel spaces. We derive necessary and sufficient conditions for any control strategy to be optimal. Through our analysis, new dynamic programming equations and new policy iteration algorithms are derived. The main feature of the new policy iteration algorithms (which are applied for finite alphabet spaces) is that the policy evaluation and policy improvement steps are performed by using the maximizing conditional distribution, which is obtained via a water filling solution. Finally, the application of the new dynamic programming equations and the corresponding policy iteration algorithms are shown via illustrative examples.
Tuning of the rotational transform in Wendelstein 7-X

The control of rotational transform in Wendelstein 7-X (W7-X) is key to both the island divertor operation and safety of plasma facing components. The island divertor concept in W7-X relies on an edge flux surface with rotational transform of resonating with an intrinsic n/m = 5/5 resonance to form a five lobed island chain. This island chain intersects with divertor plates to give rise to the island divertor. Changes in the relative position of the rational surface and the divertor plates can result in changes in divertor performance, thus the control of the rotational transform is essential to operation of the W7-X device. During the first divertor campaign electromagnetic loads resulted in elastic deformations of the shaped modular stellarator coils. Such deformations made these coils more planar, reducing the vacuum rotational transform, subsequently shifting the resonance outward. Unintended plasma wall interactions provided the first clear evidence of this effect during plasma operation. Flux surface measurements were utilized to estimate the correct level of current in the planar coils for correction of , and found to be around ∼. Scans of the planar coil current for iota correction were performed during plasma operation. These measurements suggest planar coil currents between −250 and ∼ would place the strike lines at the designed distance from the pumping gaps. Divertor Langmuir and upstream probe measurements confirm these estimates along with measurements of divertor neutral gas pressure.
Investigation of Water Permeability of Ultrasonic Seaming on PU Coated Fabrics

Teknik tekstiller, tekstil ve konfeksiyon sektorunde onemli bir yer tutmaktadir. Teknik tekstillerde, konvansiyonel dikis yontemlerinin yani sira ultrasonik dikis yontemi, fonksiyonel tekstillerin dikis islemlerinde kullanilan alternatif yontemlerden biridir. Bu calismada, igne ve iplik kullaniminin gerekmedigi ultrasonik dikis yonteminin PU kaplamali kumaslarin su gecirmezlik ozelligi uzerindeki etkileri konvansiyonel dikis yontemleri ile karsilastirmali olarak incelenmistir. Farkli dikis parametreleri ile elde edilen dikilmis kumaslar yikama islemine tabi tutulmus ve bu kumaslarin su gecirmezlik ozellikleri yikama islemlerinden once ve yikama islemlerinden sonra test edilmistir. Dikis tipi, kumas tipi, ultrasonik dikis hizi ve yikama islemi acisindan degerlendirilen sonuclar istatistiksel olarak analiz edilmistir. Test sonuclarina gore, ultrasonik olarak dikilmis kumaslarin su gecirmezlik ozellikleri, konvansiyonel olarak dikilmis kumaslardan daha yuksektir. Ultrasonik dikisle dikilmis kumaslar ile konvansiyonel olarak dikilmis kumaslarin su gecirmezlik degerleri arasindaki fark istatistiksel olarak anlamli bulunmustur. Kumaslarin su gecirmezlik ozelliginin diger parametrelerle iliskili oldugu belirlenmistir.