Miracle-dz/UniFAR-FTUs huggingface dataset:
BioSensing: using motion sensors in real life care situations

Objective. People use pedometers and sport watches to measure calorie use and training performance. Knowing "how you move" is often more important than knowing "how much you move". Measuring "how you move" and feedback to the user is the objective of the BioSensing project. Patients with osteoarthritis of the knee and patients with acute knee injury are the intended user groups. Main content of paper. A sensor system was developed that quantifies simultaneously body acceleration, knee angle, foot pressure and repetitive loading patterns of the knee joint during activities of daily living. Patients get feedback if they move too much, too little, or move in the wrong way. The sensor system consists of a smart knee brace that measures the knee angle (developed by TNO), a combined angular velocity and acceleration sensor (McRoberts), a foot sensor (Zephyr/TNO), a data acquisition system (IDEE), and a wireless communication system (IDEE/Neways). Data is uploaded to a webserver and presented via a web application. Demonstrators were created for the medical specialist (diagnostics), for the physiotherapist (training), and patients at home (training, monitoring). Results. Demonstrators were successfully shown at the BioSensing Symposium (Maastricht, Dec 2010). Experiments were conducted at Maastricht UMC+ to validate the knee brace sensors. Software was developed that automatically detects different daily activities by analysis of movement data: walking, climbing stairs, descending stairs, running (MOBILAB). An application of the DynaPort Hybrid was developed for knee loading measurement during daily activities (McRoberts). Conclusion. BioSensing movement sensors give patients the opportunity to be more involved in their own rehabilitation, using direct feedback as a guideline. © 2011 The authors and IOS Press. All rights reserved.
Design and implementation of weaving-type pad for contactless EV inductive charging system

The purpose of this study is to develop a new weaving-type pad for electric vehicles (EV) contactless inductive charging system. This proposed charging pad which consists of a weaving-type coil is fabricated to obtain a uniform mutual inductance profile over the charging surface and to solve the problem of present inductive coupled structure in which the EV has to be placed exactly on a specific place. Apart from weaving-type pad, type E core and two overlapping coils are utilised as a secondary pickup to guide and to pick more magnetic flux. The analysis and simulation of magnetic characteristic for comparing the proposed weaving-type pad to simple shape pad are performed by finite-element-analysis (FEA) software. Phase locked loop circuit is utilised to match the operating frequency and resonant frequency in order to solve the loading effect problem caused by impedance variation during the battery charging procedure. To validate the concept and system design, a laboratory scale test system with weaving-type pad for EV contactless inductive charging is built and tested. The coupling efficiency is found to be 66% for an air gap of 9 cm between the weaving-type charging pad and pickup when a 2 Ah lithium iron phosphate battery is charged.
Space-vector pulse width modulation scheme for open-end winding induction motor drive configuration

This study proposes a novel space-vector pulse width modulation scheme for an induction motor with open-end windings. The proposed PWM scheme requires two two-level inverters with isolated power supplies. This PWM scheme uses instantaneous phase reference voltages for the generation of gating signals. Open-end winding induction motor (OEWIM) offers significant switching redundancy. Thus, with the proposed scheme the required gating pulses can be generated to reduce the voltage stress on the switching devices. In addition, the switching scheme is capable of equalising the junction temperature rise during the switching and conduction state of the devices. In the present switching scheme when one inverter is switching while the other inverter is clamped and vice versa. The proposed scheme is simulated using MATLAB/Simulink. The PWM scheme is experimentally validated on dSPACE for a three-level OEWIM.
CARS and non-linear microscopy imaging of brain tumors

Nonlinear optical microscopy offers a series of techniques that have the potential to be applied in vivo, for intraoperative identification of tumor border and in situ pathology. By addressing the different content of lipids that characterize the tumors with respect to the normal brain tissue, CARS microscopy enables to discern primary and secondary brain tumors from healthy tissue. A study performed in mouse models shows that the reduction of the CARS signal is a reliable quantity to identify brain tumors, irrespective from the tumor type. Moreover it enables to identify tumor borders and infiltrations at a cellular resolution. Integration of CARS with autogenous TPEF and SHG adds morphological and compositional details about the tissue. Examples of multimodal CARS imaging of different human tumor biopsies demonstrate the ability of the technique to retrieve information useful for histopathological diagnosis.
Promoting Physical Activity Using Technology

There is no question that technology has changed our lives. Many of these changes, from a physical activity (PA) and public health point of view, are negative: we drive to work or shop, we watch TV or sit in front of computers for many hours, we “Google,” we chat online, we communicate through “texting,” we make friends through “Facebook. ” As a result of all these changes, we have lost many low-to-moderate intensity activities from our daily lives and many of us now live a sedentary lifestyle. Well-documented scientific evidence has demonstrated that a sedentary lifestyle is one of the leading causes for most of today’s health problems and chronic diseases, such as obesity, heart disease, cancer, diabetes, etc. One may wonder, since technology is one of the causes of today’s sedentary lifestyle and health problems, how can it help promote PA? As Chinese Tao philosophy says, fortunately, everything has two sides. This is true also for technology. While technology indeed has had many negative impacts on a physically active lifestyle, it has great potential to help promote PA. This article will provide a description on how technology can help promote PA. After providing a brief review on some technologies that have been used in the field of PA promotion for many years, the article will discuss several new and emerging technologies that have great potential to help promote PA on a large scale. Then, persuasive technology, the technology developed and used for attitude and behavior change, will be introduced as a framework for our future technology development and application for PA promotion. Finally, critical practical issues related to technology applications will be briefly examined and addressed. Note that this article does not plan to include a review of all technologies that have been employed in kinesiology, e.g., computerized training and assessment devices being used in laboratory settings. Rather, the focus will be on the technology that can help promote PA and change exercise behaviors on a large scale in free-living settings. This article will not provide a comprehensive literature review on each technology and related applications, although some key research studies will be cited. Technology and PA Promotion Applications Technology is no stranger to PA promotion. In fact, it has been around for a long time. According to technology characteristics, most of these already-used technologies for PA promotion can be classified into three categories: electronic gauges/devices, telephone, and mass media. They are described below, respectively.
A Bio-Inspired Multi-Sensor System for Robust Orientation and Position Estimation*

The nature animals have evolved highly efficient and robust organs that support their complex daily navigation tasks. To mimic animal’s navigation capability, we present a novel bio-inspired navigation system that draws inspirations from nature animals in this paper. The system consists of a three-axis magnetometer, a monocular camera, a micro inertial measurement unit (MIMU) and a polarization camera. While dead reckoning, orientation, and landmark recognition are considered as three most important capability for various species, we also designed corresponding algorithms based on the bio-inspired sensing system to perform autonomous navigation. In detail, the dead reckoning component is accomplished by integrating the monocular camera and the MIMU into a visual inertial odometry (VIO) and the orientation capability is achieved by combining the absolute orientation from the magnetometer with the relative orientation from the VIO. A loop closure detection is then used as the landmark recognition component to reduce the navigation drifts. All the three components are fused with a graph optimization method to generate the robust navigation result. To valid the proposed navigation sensing system and the algorithms, we have conducted series of experiments on ground and aerial unmanned vehicles, and have added orientation noise to testify the accuracy and robustness of the system.
Pseudo-seizure, an Atypical Presentation of Attention-Deficit Hyperactivity Disorder in a Female: A Case Report

Background This paper describes pseudo-seizure as an atypical presentation of attention-deficit hyperactivity disorder (ADHD) in an adolescent female in the context of psychosocial difficulties. We present the case, which explains the clinical dilemma in such situations, along with selective literature review. Case Presentation An adolescent female, who is an academic high achiever, living with parents, presented with unresponsive spells which were initially treated with antiepileptics by the paediatrician without any significant improvement. Later, after further assessments and revision of her diagnosis to conversion disorder, she was referred to the child and youth mental health service team. Further evaluation revealed her symptoms to be a result of multiple psychosocial stressors in the context of her having undiagnosed ADHD. Individual therapy, treatment with stimulant, resulted in significant improvement in her school and home adjustments. Conclusions This case demonstrates the diagnostic challenges that high-functioning girls with ADHD coloured by psychosocial stressors can pose and raises the need for reviewing our diagnostic approaches in these situations.
Live Demonstration: Double SLERP Gravity-Magnetic Vector (GMV-D) orientation correction in a MARG sensor

It is desirable for computers to have the real-time ability of tracking user hand movement. The use of Magnetic-Angular Rate-Gravity modules (MARGs) is one of the emerging approaches for this purpose. We studied the use of a MARG module (YEI 3-Space Sensor) in conjunction with a 3 IR-camera (OptiTrack V120 Trio) tracking system for hand tracking. The MARG gyroscopes display "drift error" which will continue to grow through time. We correct the gyroscope-based orientation quaternion estimate by calculating orientation estimates derived from the accelerometer and magnetometer included in the same MARG module. We assess the suitability of application of either of these orientation correction approaches and implement them as appropriate. This makes full use of the capabilities of the MARG module to persistently minimize orientation estimate errors.
Model of a MEMS sensor using a common gate MOSFET differential amplifier

The design, modelling and feasibility of a MEMS sensor based on a common gate metal-oxide-semiconductor field effect transistors (MOSFET) differential amplifier is presented. A pair of adjacent MOSFETs shares a common gate electrode that is suspended in a torsional configuration over the transistor gate regions. Rotation of the common gate alters the relative spacing between the gate tips and the substrate changing the gate capacitance of each transistor. Connection of the transistor pair in a differential readout configuration generates a differential current flow through the MOSFET pair. This sensor integrates transduction and amplification as movement of the MEMS gate modulates the relative gate capacitance and drain current of each transistor. The differential configuration provides a high common mode rejection ratio and the estimated sensitivity is 68 µA (fF−1) and the responsivity of the sensor is 2.2 mV/degree.
Grau de Legibilidade do Novo Relatório do Auditor Independente

Este artigo tem como objetivo analisar se o grau de legibilidade dos relatórios do auditor independente foi afetado após as mudanças das normas de elaboração desses relatórios. Em vista desse objetivo, foram analisados 273 relatórios de auditor independente, divulgados entre os anos de 2015 e 2017, em empresas listadas no Índice Brasil 100 (IBrX 100). A mensuração da legibilidade foi realizada pelo Gunning´s Fog Index (“índice de nevoeiro”), programa que permite identificar o grau de complexidade desses relatórios, em conjunto com o teste de correlação estatística. Os resultados apontaram que, na média, houve uma redução de 48% para 40% no grau de complexidade, tanto no ano de 2016 como em 2017. A correlação foi positiva e com magnitude moderada entre as variáveis grau de legibilidade e nível de governança corporativa. Por fim, dentre os relatórios analisados, o da empresa Light S/A foi o que apresentou o menor grau de complexidade de todas as empresas relacionadas neste estudo, no ano de 2015. Por sua vez, o da empresa B2W Digital foi o que apresentou o maior grau de complexidade no mesmo ano, com grau de 147%.
Analytical Approximations in Modeling Contacting Rough Surfaces

A critical examination of the analytical solution presented in the classic paper of Greenwood and Williamson (1966), (GW) on the statistical modeling of nominally flat contacting rough surfaces is undertaken in this study. It is found that using the GW simple exponential distribution to approximate the usually Gaussian height distribution of the asperities is inadequate for most practical cases. Some other exponential type approximations are suggested, which approximate the Gaussian distribution more accurately, and still enable closed form solutions for the real area of contact, the contact load, and the number of contacting asperities. The best-modified exponential approximation is then used in the case of elastic-plastic contacts of Chang et al. (1987) ( CEB model), to obtain closed-form solutions, which favorably compare with the numerical results using the Gaussian distribution.
MODELLING OF ROBOTIC MANIPULATOR ARM

Kinematic modelling is an important section of robotic technology.The method was used for three link arm manipulator. The kinematic modelling of the three link arm manipulator with end effector was carried out. In this paper D-H matrix is used to solve kinematic equations of robot. The dynamic forces are calculated for the maximum stretch condition using multi body dynamics analysis. The results validated using the software analysis andthe mathematical formulation.
Stable V/f control system with controlled power factor angle for permanent magnet synchronous motor drives

This study develops a scalar V/f control system for permanent magnet synchronous motor drives with two stabilising feedback corrections: a voltage-vector speed correction using active power variation, operating only in transient states and a voltage amplitude correction based on controlled power-factor regulation loop, employing reactive power. Motor/generator operating mode is allowed using the active-power sign information. Simulation and experimental results, and comparison with a medium complexity sensorless vector control prove good performance for the proposed control structure in steady and transient states, at low and rated speed operation with rated load disturbances.
Human Factors Gone Awry - Why Current Efforts Fail To Adequately Address Suffocation Hazards of Infant Sling Carriers

Infant sling carriers are hands-free, fabric carrying devices used to secure an upright or reclined infant to a caregiver. With traditional, unstructured slings, safety depends solely on the wearer’s use and knowledge of how to wrap an infant onto the caregiver, since safety is not passively designed into the product. In recent years, semi-structured slings with seemingly simple instructions began being marketed to make slings easier to use. However, infants younger than 4 months of age are suffocating in both unstructured and semi-structured slings. This paper describes research undertaken to identify factors contributing to suffocation, explains why efforts to improve product usability instead created new suffocation hazards, why better warnings and instructions fail to adequately address these hazards, and thus why the government and industry should adopt more effective options to address this deadly hazard.
Inside a Microapartment: Design Solutions to Support Future Sustainable Lifestyles

The purpose of this study wass to assess the interior design solutions of residential microflats built in large European cities in countries from the Organisation for Economic Co-operation and Development (OECD). A sample consisting of thirty representative microflats with a floor area below 35 m2 was selected for the study. The flats were intended for either permanent or temporary occupancy and were built over the past fifteen years. The research field covered several large European cities, where demand for such units is high. Comparative analyses of different microflat interior design models were performed. The objective of the study was to determine which contemporary microflat interior design solutions (such as space layout, furniture layout, and design, color, and material design) are optimal and the most commonly used. Sets of design solutions applied in microflats were collected and documented. The study used a range of research methods, including a review of the literature, websites, field research, and comparative analysis. The set of presented interior design solutions and the conclusions drawn from the analyses can be useful to architects and interior designers who design microflats and residential units with greater floor areas, or flats where effective use of floor area is crucial (e.g., student housing). It is also worth mentioning that the existing literature on microflats focuses primarily on the United States and Australia and not Europe, and discusses the economics and ecology of inhabiting microflats.
Guidelines for energetic load in three methods of refuse collecting

The energetic load and guidelines were formulated for energetic load in three methods of refuse collecting. These methods were collecting refuse in polythene bags (in a city area and in a suburb), in two-wheeled mini-containers and in large four-wheeled containers. To determine the energetic load of the collecting methods, these collecting methods were simulated in the laboratory. The simulation protocols were based on data such as weight of the handled materials, and the frequency and duration of the most prominent refuse collecting activities as found in the preliminary field study. During the execution of the protocols the heart rate and oxygen uptake were continuously recorded. The maximal oxygen uptake was determined during a continuous running protocol on a treadmill. The energetic load was expressed in terms of percentage of the maximal oxygen uptake. As the limit for the energetic load a value of 30% of the maximal oxygen uptake during an 8-h working day was chosen. The limit for energetic overloa.
Multi-Physics Equivalent Circuit Model for MEMS Sensors and Actuators

Multi-physics simulation is becoming an indispensable technique for integrated MEMS (micro electro mechanical systems) to comprehend the system level behavior including electronics, mechanics, and/or other physics domain such as optics. We have newly developed a single platform simulation technique for MEMS by using a compact model solver for the mechanical equation-of-motion (EOM) implemented as an analog computation circuit on an electrical circuit simulator such as Qucs[1], LTspice[2] and Cadence Virtuoso. In this talk, we review the conventional methods to develop an equivalent circuit model for MEMS and report our own simple and useful technique to create a compact model for electrostatic micro actuators and sensors by translating the algebraic analytical model into an equivalent circuit model based on the non-linear independent current source.
Risk Factors of ACL Injury

An anterior cruciate ligament(ACL) is one of the major stabilizers of the knee joint, injury to which can be quite dreadful even ending many sports careers if not properly treated. Knowledge of the risk factors contributing to ACL injury will help in identifying at-risk individuals and develop preventive strategies. The factors contributing to ACL injury are multi-factorial involving biomechanical, anatomical, hormonal, neuromuscular factors etc; and can be broadly classified as Intrinsic and Extrinsic factors. Intrinsic factors are mostly non-modifiable risk factors may be subdivided into anatomical, genetic, gender, previous ACL Injuries etc . Whereas Extrinsic factors are mostly modifiable risk factors include environmental factors, characteristic of surface and shoe, BMI and others. Anatomical risk factors can divided into tibial parameters like posterior tibial slope, medial tibial plateau depth etc ; femoral parameters like notch width, notch index etc.
Research of Vehicle Trajectory Tracking Based on Human-Simulated Intelligent Control

As unmanned ground vehicle is a nonlinear time-varying system, it is difficult to describe the accurate mathematical model. To solve this problem, a control algorithm of vehicle trajectory tracking based Human-Simulated Intelligent Control (HSIC) is proposed, and feature model set, control mode set and reasoning mode set are designed. Finally, this method and traditional preview follower PID algorithm are compared with each other in experimental way. The results show that such method has small dependence on the model with better control effect and overall stability.
Seamless Mode Shifting of Double-Stage Solar PV System Interfaced to the Utility Grid

A double stage PV with grid connection and disconnection ability is presented here. With the requirement of energy surety and improved power quality, several steps are being undertaken to incorporate distributed energy resources (DERs) based on renewable power. Therefore, the need of an efficient control is paramount, which allows seamless transfer of power between grid connection and disconnection. In order to obtain a coordinated control, a subband adaptive filter is utilized, which improves power quality (PQ), power transfer proficiency along with reduced intermittency. Moreover, the changeover is governed by static transfer switches (STS) between the grid connection and disconnection state. In accordance with IEEE-1547 and IEEE-519 standards, the results validate the system performance during weak grid conditions and changeover to standalone mode of operation.
P‐31: Will Curved Displays Become Mainstream in Electronics? Appraisal for Aesthetic and Usability Aspects of Various Curves and Sizes

This study investigated the benefits of a curved display compared with a flat display, and discovered the optimal radius of curvature for large-size curved television based on the subjective judgment on aesthetics and usability. The experimental results showed that the optimal radius of curvature varies depending on the display size and it increases as the size becomes larger. The curvature with a radius equal to 2000 mm is optimal for a 55-inch television, and the curvature with a radius range between 2000 mm to 3000 mm is appropriate for 65-inch and 75-inch televisions.