Miracle-dz/UniFAR-FTUs huggingface dataset:
Disseminação Robusta de Dados Pessoais Sensíveis Baseada em Comunidade de Interesse e Conﬁança Social para Suportar Situações Emergenciais de Saúde

Os serviços de saúde em redes (e-health) lidam com dados pessoais sensíveis, que devem ser preservados na entrega e do acesso não autorizado. Os mecanismos de controle de disseminação atualmente se voltam principalmente aos ambientes de saúde estruturados, como hospitais, mas ainda não atendem adequadamente nos momentos entre o surgimento de uma emergência e o seu atendimento em ambientes urbanos dinâmicos, como ruas e avenidas. Aspectos sociais das pessoas e de suas relações contribuem para a entrega conﬁável desses dados. Este trabalho apresenta STEALTH, um sistema que emprega conﬁança social e comunidades de interesse (CoI) para controlar a disseminação dos dados sensíveis das pessoas em situações emergenciais em ambientes dinâmicos. Simulações no NS-3 demonstram sua capacidade de assegurar a disseminação de dados sensíveis às pessoas que possam contribuir para um atendimento eﬁciente. STEALTH obteve uma conﬁabilidade de até 80% no acesso aos dados disseminados, uma latência máxima de 95ms e uma disponibilidade de até 98,8% para atender situações emergenciais.
Optoelectronic refractive index measurements: application for smart polymer processing

In the last decade, polymeric based composites, in the light of their low weight/mechanical strength ratio, have been widely used in many industrial areas such as, automotive, aeronautic and aerospace. Because of the dependence of their properties on the manufacturing stage, real time monitoring of the processing stage has been indicated as the key point for improving the quality and reducing manufacturing process costs through an intelligent control of the manufacture itself. To this aim, optimal monitoring systems should be non-intrusive, real time and able to measure a physical property changing during the process development. Refractive index is a suitable state parameter being directly correlated to the material density. In this work, a fiber optic sensor has been used to monitor the cure kinetics and measure glassy transition temperature by refractive index measurements. Experimental results are presented, demonstrating the potentiality of refractive index measurements for smart polymer processing.
Behaviour recognition for individuals, groups of people and crowd

We propose in this paper an approach for recognising either isolated individual, groups of people or crowd behaviours in the context of visual surveillance of metro scenes using multiple cameras. In this context, a behaviour recognition module relies on a vision module composed of three tasks: (a) motion detection and frame to frame tracking, (b) multiple cameras combination and (c) long term tracking of individuals, groups of people and crowds evolving in the scene. For each tracked actor, the behaviour recognition module performs three levels of reasoning: states, events and scenarios. We have also defined a general framework to easily combine and tune various recognition methods (e.g. automaton, Bayesian network or AND/OR tree) dedicated to the analysis of specific situations (e.g. mono/multi actors activities, numerical/symbolic actions or temporal scenarios). Validation results on different methods used to recognise specific behaviours are described. (5 pages)
A Ku-Band Wideband Power Divider with Defected Ground Structure

A planar power divider operating over the whole Ku-band is presented. The proposed device utilizes a T-microstrip junction combined with defected ground structure and an elliptical patch at the centre of the T-junction. An isolation resistor is connected across the slotted ground plane. The simulated results of the divider show equal power split, insertion loss is less than 0.3dB, return loss of all ports are better than 15dB, and isolation is better than 15dB over the whole Ku-band.
A 3.1–10.6GHz high linear Low Noise Amplifier for Ultra-wideband Receivers

An ultra-wideband (UWB) 3.10-to-10.6 GHz low-noise low noise amplifier (LNA) is presented in this paper. With the common-gate structure as the input stage, the broadband input matching network is also very simple and has good reflected coefficient. An output-matching module is designed in order to achieve flat gain over the whole bandwidth and generate more output current. The LNA is simulated based onCHRT 0.18mmmixed signal/RF process. It provides a transducer gain of 11.3~15.3dB, an input reflection coefficient lower than -9.5dB over the whole frequency range, a minimum noise figure equal to 2.75dB ,an input-referred third order intercept point of 19 dBm, the power consumption of the LNAwithout output buffer is 17mW using 1.5 V power supply. Index Terms – ultra-wideband (UWB), low noise amplifier (LNA), common gate
Recopilación Automatizada de Evidencias de la Realización de Actividades Educativas en el Cloud

This paper describes an educational innovation driven by two teaching experiences, to automatically gather evidences of the activities of the students on computational laboratories. These have been implemented in various courses of the Master’s Degree in Parallel and Distributed Computing (MCPD) at the Universitat Politecnica de Valencia (UPV). For that, we rely on the ODISEA platform, which allows to dynamically deploy and configure Computational Virtual Environments (CVE) (such as virtual laboratories, simulators, software tools, etc.) required to perform educational activities on top of virtual infrastructures both in public and private (on-premise) clouds. We present the approaches carried out to automatically collect the evidences, focusing on detecting abuse and misuse of computational resources and the creation of a digital portfolio. Furthermore, it is outlined how these mechanism have been implemented in the CVEs required in the activities using the capabilities provided by ODISEA platform.
Design and practical implementation of a back-emf sliding-mode observer for a brushless dc motor

A sliding-mode observer is proposed in order to estimate the phase-to-phase trapezoidal back-EMF in a brushless DC motor by using only the measurements of the stator currents and voltages. The main feature of the proposed observer is that it is not sensitive to the switching noise and no filtering is required. The back-EMF estimate was then used to deduce the six rotor positions of the motor. In addition, a method to obtain an estimate of the rotor speed of the motor, by exploiting the mathematical relationship between the speed and the back-EMF, is presented. The observer of the trapezoidal back-EMF is implemented practically on a DSP board. Simulation and experimental results are given to show the performance of the observer.
How Could Trade Affect Conflict?

A common argument is that international trade prevents conflict because the possible loss of trade reduces the willingness of both sides to fight. I examine the logic of this argument in the light of game theoretic models of conflict. In such models, crises are contests of relative resolve. Neither side, however, can observe the other side's resolve in totality; resolve has observable and unobservable components. Instead both sides try to judge the other's unobservable resolve from their actions in the crisis. Costly signals play a critical role in the communication of unobservable resolve in these models. If higher trade flows reduce both sides' resolve for war, then the effect of trade on the likelihood of conflict is indeterminate. Trade flows are observable ex ante, and a state contemplating conflict considers its effect on both sides' actions before beginning a dispute. The initiator is less willing to fight, reducing the chance that it initiates a dispute. At the same time, the target is also less willing to fight, increasing the chance that it makes concessions to the initiator to avoid war, and thus increasing the chance that the initiator begins a dispute. The net effect of these two changes is indeterminate. Trade flows could reduce the risk of escalation by increasing the range of costly signals of resolve in a crisis. A greater range of available costly signals increases the efficiency of signaling between the disputants, increasing the chance that they will reach a peaceful settlement.
A modelling technique for assessing linked MOVA

This paper introduces an innovative approach to evaluating the benefits of linked MOVA (Microprocessor Optimised Vehicle Actuation) using a micro-simulation modelling and programming technique. The implementation of linked MOVA at signal-controlled junctions has been found to provide more efficient junction operations by either maximising capacity or minimising delay, depending on the level of congestion. Although vehicle actuation (VA) modelling is commonly available (i.e. bus gating, standalone MOVA and SCOOT), there has been no method for assessing the operational benefits and signal settings of linked MOVA implementation. Using the programming ability within the VISSIM micro-simulation software suite, a precise assessment of the benefits of linked MOVA type VA was undertaken. The signal settings, operational parameters and ‘linking’ of the signal control junctions were set as part of the MOVA implementation in evaluating the operational benefits. A post-implementation evaluation study is presented in .
Experimental Analysis of Surface Geometry, External Damping and Waves on Semisubmersible Vortex Induced Motions

Semisubmersible Vortex Induced Motions have been studied extensively at model scales, and observed under field conditions. VIM response is of particular concern in evaluations of Steel Catenary Riser (SCR) fatigue damage. Historically, most of this experimental work was done with bare models, without much effort to represent actual hull surface characteristics. In this paper, the effect of these appurtenances, tow direction and wave action is investigated. There is also an examination of vortex induced yaw response. VIM response is assessed using motion trajectories, dominant response direction, and amplitudes and periods of response. Variations in these quantities are also investigated.Copyright © 2012 by ASME
Resonance Analysis: A Methodology for Detecting Author Affiliations through Distinctive Patterns of Word Choice

ii Figures. iv Tables . v Executive Summary . vi Acknowledgments.xi Abbreviations . xii 1. Context and Conceptual Framework . 1 Motivating Problem . 1 Methodological Foundations . 3 Conceptual Foundations . 7 2. Methodology . 9 Chapter Summary . 9 Procedure . 10 Assorted Guidance on Research Design Decisionmaking . 23 3. Empirical Validation Test Results . 29 Chapter Summary . 29 Data . 30 Results . 32 4. Simulation-Based Validation Test Results . 44 Chapter Summary . 44 Procedure . 44 Results . 49 5. Resonance Analysis in Practice: Closing Thoughts . 53 Chapter Summary . 53 Previous Work Using Resonance Analysis on Social Media . 53 Opportunities for Further Research . 55 Conclusion . 57 References . 58
Controller Design for a Magnetically Suspended Milling Spindle Based on Chatter Stability Analysis ( Magnetic Bearing)

The chatter stability of a rigid milling spindle levitated by five-axis active magnetic bearings (AMBs) is studied for its chatter free cutting, as the control gains of AMBs vary. The characteristic equation for regenerative chatter loop with a delay element is described by a linear differential-difference equation, accounting for the dynamics of the AMB controllers, the uncut chip thickness equation and the cutting process as well as the rigid spindle dynamics itself. An efficient chatter stability analysis method is then proposed to predict the stability lobes and chatter frequency in milling. The analytically predicted stability lobes are found to be in good agreement with the lobes generated by other methods available in the literature. Using the proposed method, parametric study is also performed to investigate the influences of the damping and stiffness coefficients of AMBs on the chatter free cutting conditions, as they are allowed to vary within the stable region formed by the AMB control gains.
The Influence of Foot Sizes on Human Balance

This study investigated the relationship between foot size and human balance performance. The balance performances of 30 female subjects (15 young, 15 elderly) were assessed by a force platform system. Mean sway velocity, balance strategy score and composite equilibrium score (CES) were used to quantify balance performances from three different aspects. Correlation analysis was conducted to analyze the relationship between foot sizes and human balance measures. The results showed that most foot size measures (with or without normalizations) have significant correlations on mean sway velocity and balance strategy score, but no relationship with CES. In general, the bigger the foot size, the lower mean sway velocity and the bigger the normalized foot size, the higher balance strategy score (more ankle strategy), especially for the young group.
Recruitment AI has a Disability Problem: questions employers should be asking to ensure fairness in recruitment

Artificial Intelligence (AI) technologies have the potential to dramatically impact the lives and life chances of people with disabilities seeking employment and throughout their career progression. While these systems are marketed as highly capable and objective tools for decision making, a growing body of research demonstrates a record of inaccurate results as well as inherent disadvantages for women and people of colour (Broussard, 2018; Noble, 2018; O’Neil 2017). Assessments of fairness in Recruitment AI for people with disabilities have thus far received little attention or have been overlooked (Guo et al., 2019; Petrick, 2015; Trewin, 2018; Trewin et al. 2019; Whittaker et al., 2019). This white paper details the impacts to and concerns of disabled employment seekers using AI systems for recruitment, and provides recommendations on the steps employers can take to ensure innovation in recruitment is also fair to all users. In doing so, we further the point that making systems fairer for disabled employment seekers ensures systems are fairer for all.
Research on the Temperature Control Algorithm of the Poultry Farm

The environment in poultry farm is a complex system with time-varying, nonlinear and pure lag. The traditional temperature control algorithm is difficult to obtain good control effect. In order to solve the issues of larger overshoot, vibration, low control accuracy and so on, this paper presents a fuzzy-PID estimated control algorithm. Firstly, the system identification is used to get more accurate system model. Then, using the fuzzy control rules improves the system stability precision, reduces the impact of the delay on the system and improves the adaptability of the system. Simulation results show that the proposed control strategy has a fast response, small overshoot, robustness, high control precision and so on. It provides a reference for intelligent control design of poultry temperature.
Fault Detection and Isolation of a Benchmark Wind Turbine using the Likelihood Ratio Test

Abstract In this paper the generalized likelihood ratio (GLR) test and the associated statistical fault detection tools are used to detect and isolate faults in the wind turbine benchmark problem. The most challenging task in the wind turbine problem is accurate detection and isolation of the fault within the stringent time constraints which are set for each of the faults. On the other hand due to the practical implementation issues, the computational effort should be as low as possible. Inaccurate measurement of wind speed, high nonlinearities in the drive train model and correlated process and measurement noises are other critical issues which are dealt with in the current work.
Análisis del comportamiento contextual del usuario y su relación con el consumo de aplicaciones móviles

El mercado de aplicaciones moviles crece aceleradamente, captando la atencion sobre el analisis del consumo de las mismas para mejorar su recomendacion y la satisfaccion del usuario, soportado en la busqueda de informacion que permita explicar la ocurrencia de eventos del ciclo de vida de las aplicaciones. En este sentido algunos estudios muestran una fuerte relacion entre dichos eventos e informacion sobre la situacion contextual actual del usuario y su registro de consumo de aplicaciones. Sin embargo, dichos trabajos no consideran la relacion existente entre el registro de estados de las dimensiones contextuales (denominado como CUBe) y la ocurrencia de eventos del ciclo de vida de las aplicaciones,tal como lo hace este estudio. En este sentido, se presenta un analisis estadistico sobre un dataset real, evidenciando una fuerte relacion entre el CUBe y el lanzamiento de un conjunto de aplicaciones. Finalmente, se describe un escenario donde estas relaciones pueden ser utilizadas para enriquecer sistemas de recomendacion para aplicaciones moviles.
Analysis and design of a single-stage single-switch bi-flyback ac/dc converter

An analysis and design of single-stage, single-switch bi-flyback ac/dc converter is presented. The main flyback stage controls the output power from the link capacitor voltage with Discontinuous Conduction Mode (DCM) or Continuous Conduction Mode (CCM) operation, while an auxiliary flyback stage supplies the power to the output directly from ac line input with DCM operation. This scheme can effectively reduce the voltage stress on the link capacitor and can achieve the power factor correction (PFC) without a dead band at line zero-crossings, which reduces the harmonic distortion in ac line current. Theoretical analysis of the converter is presented and design guidelines to select circuit components are given. The experimental results on a 60 W (15 V, 4 A), 100 kHz ac/dc converter show that maximum link voltage and maximum efficiency are around 415 V and 82%, respectively. The power factor is above 0.96 under universal line input and load conditions.
Integrated drives using high voltage power ICs

This paper discusses the characterization of a Hitachi ECN3067 three-phase inverter chip as an illustration of the capability of high-voltage integrated circuit (HVIC) technology. The ECN3067 can be used with conventional PWM to drive induction motors or permanent magnet machines. Its performance has been verified in three-phase PWM and six-phase squarewave exited drives. As a practical example, two devices have been successfully employed in a six-phase drive for a vacuum pump.
The learning company

Corporate learning is more than just an IT or training issue. The author describes how it permeates every level of the successful modern company. Knowledge and experience acquired in one part of a company should be shared with the other parts. This requires suitable corporate organisation. It is helped by a suitable IT network, but that is no good without a holistic approach.
Condensation and Radiation Transmittance of Greenhouse Cladding Materials, Part 2: Results for a Complete Condensation Cycle

The radiation transmittances of a standard glass plate and an ordinary polyethylene (PE) film were measured during a complete condensation cycle (dry phase; condensation without run-off; condensation with run-off evaporation phase). The measurements were performed in a specially developed laboratory measuring unit, using perpendicularly polarized monochromatic radiation in the range of photosynthetically active radiation (PAR). Transmittances were determined for three angles of incidence: 0, 30, and 60°. In the dry phase, at normal incidence, the transmittance of the ordinary PE film (about 90% was almost similar to the one of the standard glass plate (about 89%). For increasing incidence angles, the transmittance of both dry cladding materials decreased. As soon as condensate was formed, a quick decrease of the transmittance was found for the PE film for the three angles of incidence (23% at normal incidence). This transmittance decrease adopted an equilibrium value after approximately 1 h. On the glass plate, however, the quick drop of the transmittance was only observed for higher incidence angles. At normal incidence, the effect of condensate on the transmittance of the glass plate was found to be negligible. In most cases, the occurrence of run-off caused a slight change of the transmittance of both cladding materials with respect to the phase of condensation without run-off. As soon as the evaporation of the condensate started, the transmittance returned gradually to its original value for the dry state. In general, it can be stated that the effects of condensation on the radiation transmittance were greater on the PE film than on the glass plate.
Fractal-shaped UWB bandpass filter based on composite right/left handed transmission line

An ultra-wideband (UWB) bandpass filter is presented, with excellent passband performance and improved out-of-band sharpened rejection. It is constructed with Koch island-shaped stepped impedance lines and a composite right/left handed transmission line synthesised by etching a Koch fractal-shaped ring slot in the ground plane and a series capacitive gap in the conductor strip. The equivalent circuit model of the proposed structure is presented and the electrical parameters are also extracted. The UWB filter is designed and implemented to experimentally demonstrate the enhanced performance. Numerical and measurement results show that good performance, such as low return and insertion loss over the UWB passband and sharpened rejection skirts outside the UWB passband, is achieved. Furthermore, the structure is compact in size.
Modeling and simulation of electrical drives using MATLAB/Simulink and Power System Blockset

This paper presents a unified method for modeling and simulation of electrical drives using state-space formulation in MATLAB/Simulink. The proposed method has been successfully implemented in a simulation package called "Power System Blockset" (PSB) for use in MATLAB/Simulink environment. The principle of the modeling and simulation method is presented and the PSB operation is described. Application examples including a DC brushless motor drive and a direct torque control (DTC) induction motor drive are presented. Simulation results obtained with the PSB are presented to illustrate its possibilities.
Analysis on coverage and capacity in adoption of repeater systems in CDMA2000

CDMA2000 is the 3rd generation (3G) communication system based on the 2/sup nd/ generation standard, IS-95. Because the 3G system has more complex features than IS-95, more accuracy analysis on coverage and capacity in adoption of repeater systems are needed. Especially, the issue of whether to use a base station or repeater system to cover the shadow region effectively, taking quality of service (QoS) and economy into consideration, is of critical importance for mobile communication engineers. In this paper, QoS related system capacity and coverage analysis results are provided by simulation. We describe the advantages and disadvantages of repeater systems as a new remote cell with real CDMA2000 environment.
Comparing dynamic risk-based scheduling methods with MRP via simulation

It is well known that material requirements planning (MRP) is a deterministic planning tool which heavily relies on accurate demand forecast, and that its performance under perturbed, constantly changing environment becomes questionable. Although many companies still use basic MRP as a planning tool, there are other alternative tools available. For example, Factory Physics Inc. has developed a tool called dynamic risk-based scheduling (DRS), which creates a set of policy parameters (e.g. work in process (WIP) level, lot sizes, re-order point, and re-order quantity) that work for a range of situations. The main objective of this paper is to compare DRS and MRP scheduling systems for single-machine and multi-machine systems via simulation. Their performance measures are compared for various systems assuming three levels of demand uncertainty. The simulation results suggest that DRS outperforms MRP in terms of robustness, fill rate and inventory level.