Miracle-dz/UniFAR-FTUs huggingface dataset:
Mechatronic strategies for torque control of electric powered screwdrivers

Abstract The paper presents the results of a study on using mechatronics to enhance the performance and reliability of small electric powered screwdrivers (SEPS). A mechatronic solution to control the final tightening torque replacing the mechanical clutch of a purely electromechanical SEPS is presented. Torque estimation methods based on motor armature current measurements are integrated with an SEPS driven by a direct current motor. Strategies for controlling the final tightening torque of the screw fastening process are developed. The control strategies are tested in accordance with the ISO 5393 standard. It is shown that the mechatronic controller gives comparable performance to a SEPS with a mechanical clutch. The mechatronic solution has the advantage of reduced cost, size and complexity. The paper demonstrates the application of low-cost mechatronics in industrial power tools.
Research on Fuzzy PID Control for Power-Train MR Mount System

In view of automotive power-train magnetorheological (MR) mount system with nonlinearity and uncertainty, which is difficult to control, the fuzzy PID control method was proposed and studied. Based on the analysis of two-degree of freedom vibration isolation system model, the fuzzy PID controller for the control model of MR semi-active mount was designed and its simulation analysis was carried out. The simulation results indicate that MR mount combined with the fuzzy PID control method can effectively reduce the body acceleration and the force transferred to the frame. This research provides a reference for further research and development of MR mount.
Inoculating an Infodemic: An Ecological Approach to Understanding Engagement With COVID-19 Online Information

As the global COVID-19 pandemic has been concurrently labelled an “infodemic,” researchers have sought to improve how the general public engages with information that is relevant, timely, and accurate. In this study, we provide an overview of the reasons why people engage and disengage with COVID-19 information. We use context-rich semi-structured interviews which invited participants to discuss online COVID-19-related content they encountered. This qualitative approach allows us to uncover subtle but important details of influences that drive online engagement. Participants both engaged and disengaged with content for individual and social reasons, with seven themes emerging connected to their engagement including actions in response to information, reasoning for engagement, content, motivating concerns, frequency of engagement with information, site of exposure, and given reason for not engaging. Many of these themes intersected and informed each other. Our findings suggest that researchers and public health communicators should approach engagement as an ecology of intersecting influences, both human and algorithmic, which change over time. This information could be potentially helpful to public health communicators who are trying to engage the public with the best information to keep them safe during the pandemic.
Small‐size coupled‐fed printed PIFA for internal eight‐band LTE/GSM/UMTS mobile phone antenna

A coupled‐fed printed PIFA (planar inverted‐F antenna) with a small footprint (about 415 mm2) for eight‐band operation covering the LTE700/2300/2500, GSM850/900/1800/1900, and UMTS bands in the mobile phone is presented.The proposed PIFA uses only a single radiating strip of length 45 mm which is short‐circuited to the system ground plane of the mobile phone through a long inductive shorting strip and is capacitively excited by a long coupling strip. The capacitive excitation leads to the generation of the λ/8 resonant mode at about 850 MHz and the higher order resonant modes at about 1900 MHz for the printed PIFA. The inductive shorting strip contributes additional inductance to achieve enhanced impedance matching for the excited 850 MHz band to achieve a dual‐resonant behavior, which results in a wide lower band to cover the LTE700/GSM850/900 operation. A higher order resonant mode at about 2650 MHz is also contributed by the long inductive shorting strip. This resonant mode incorporating the one at about 1900 MHz generated by using the coupling feed forms a wide upper band to cover the GSM1800/1900/UMTS/LTE2300/2500 operation. Compact integration of the proposed antenna with a nearby loudspeaker is also promising. Details of the results are presented. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2123–2128, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25387
Robust control system design of crude oil atmospheric distillation column

The robust control system of multi-component oil atmospheric distillation column was designed. Since the dynamics of the column can not be accurately modeled, a set of models, used at different design stages of the control system was developed. In the paper, the robustness of the control system means the preservation of its high quality when connecting any model of the developed set. The big advantage of the system is the fact that it is based on a multi-dimensional digital linear-quadratic regulator and the parameters that determine the material balance of the column are used as controlled variables. Such a system is easy to implement and can successfully replace traditional control systems of oil distillation columns and modern commercial control systems, which are based on model-predictive controllers popular in the global oil and gas industry.
Sport, physical activity and social health in older adults. Caring with technology in the COVID-19 pandemic

The aim of this paper was to photograph this precise moment in history, focusing on the situation of older adults during the COVID-19 health emergency in Northern Italy. In particular, we analysed the relationship between social networks and social support, sport and recreational activity, and the use of communications technologies in December 2020. We investigated and discussed such use of technologies, wondering if and how it helped to compensate for the diminishment in social health, usually gained trough social interactions and the practice of sport and physical activity. We examined how reduction of mobility, social distancing and isolation measures imposed by the government to reduce the spread of COVID-19, affected the living conditions of the older adults, in particular their social health, and the level of sport and physical activity they were engaged in. We collected data through interviews with the subjects, assessing their social networks, the perceived social support provided by their family members, friends and caregivers, and the level of sport and physical activity they were engaged in. Moreover, we analysed the impact of technological communications devices, which were employed to help older adults to maintain their relationships with the outside world and to preserve their active life. The interview questions were formulated based on the Lubben Social Network Scale-Revised (LSNS-R), the short version of the Social Support List (SSL12-I) for the elderly and the Physical Activity Scale for the Elderly (PASE). A relationship was found between the social health related to physical activity of the older adults subjects during the COVID-19 emergency and the use of communications technologies, which played a role in mitigating the impact of the crisis on their social health by helping them to keep physically and socially active.
Measuring Spatial Arrangement of Indonesian Colonial Cities using Depth and Connectivity Calculations: Ratio study on master plans using Space Syntax

: This study proposes an easy method for calculating the spatial arrangement of Indonesian city planning, in line with sustainable urban forms. Several Indonesian cities originated during the Dutch colonial era. Although it is very important to consider the original plans of these cities to maintain their sustainability, generally, the original plans tend to be ignored. The master plans investigated in this work are those of three cities in Indonesia designed by Dutch planners of Semarang, Bandung, and Malang, and which are compared to two cities in the Netherlands (Delft and Amsterdam). The method used was by collecting images of ancient maps of Amsterdam, Delft, Bandung, Semarang, and Malang, then digitising the image from raster to vector so that it can be calculated using DepthMapX. This study utilised maps for computing the Depth of the cities. Then, a space syntax approach using Depth Calculation (DC) techniques is deployed for determining the similarity ratio among the cities. Based on the results of the assessment, it is found that there is similarity in Depth in the cities of Amsterdam and Delft against three Dutch colonial cities in Indonesia. This study supports that the DC in the master plan of cities in Indonesia is similar. The resulting ratio shows the extent of the difference between the pattern of Indonesian colonial cities and the pattern of Dutch cities. It is expected that this study will contribute to urban planners’ and city governments’ determination of the direction of development of a city designed during the Dutch colonial period. Maintaining the sustainability of the old colonial urban form requires harmony between urban planning and the policies made by the city government.
Insensitivity of mass loss of Icelandic Vatnajökull ice cap to solar geoengineering

Abstract. Geoengineering by stratospheric aerosol injection (SAI) may reduce the mass loss from Vatnajökull ice cap (VIC), Iceland, by slowing surface temperature rise, despite relative increases in ocean heat flux brought by the Atlantic Meridional Circulation (AMOC). Although surface mass balance (SMB) is affected by the local climate, the sea level contribution is also dependent on ice dynamics. We use the Parallel Ice Sheet Model (PISM) to estimate the VIC mass balance under the CMIP5 (Coupled Model Intercomparison Project Phase 5) RCP4.5, 8.5 and GeoMIP (Geoengineering Model Intercomparison Project) G4 SAI scenarios during the period 1982–2089. The G4 scenario is based on the RCP4.5, but with additional 5 Tg yr−1 of SO2 injection to the lower stratosphere. By 2089, G4 reduces VIC mass loss from 16 % lost under RCP4.5, to 12 %. Ice dynamics are important for ice cap loss rates, increasing mass loss for RCP4.5 and G4 by 1/4 to 1/3 compared with excluding ice dynamics, but making no difference to mass loss difference under the scenarios. We find that VIC dynamics are remarkably insensitive to climate forcing partly because of AMOC compensation to SMB and low rates of iceberg calving making ocean forcing close to negligible. But the exceptionally high geothermal heat flow under parts of the ice cap which produces correspondingly high basal melt rates means that surface forcing changes are relatively less important than for glaciers with lower geothermal heat flow.
Laparoscopic repair of large diaphragmatic hernia after left ventricular assist device implantation followed by orthotopic heart transplantation

Abstract In patients with advanced heart failure and deteriorating clinical status, a left ventricular assist device (LVAD) can be used as a bridge to transplantation or as an alternative to transplantation. An uncommon complication of orthotopic heart transplant or LVADs is diaphragmatic hernia during implantation or explantation of the device. We describe a patient with a diaphragmatic hernia with incarcerated colon and small bowel treated previously with a HeartMate 3 LVAD and subsequent transplantation. This case highlights the need to consider the diagnosis of diaphragmatic hernia based on symptoms after HeartMate 3 implantation and/or subsequent transplantation, as well as the ability to manage these hernias with a minimally invasive laparoscopic approach to minimize postoperative morbidity and mortality.
Investigation of mechanical properties and biodegradability of compatibilized thermoplastic starch/ high impact polystyrene blends reinforced by organophilic montmorillonite

This work consists of preparation and characterization of composites produced from thermoplastic starch (TPS) and high impact polystyrene (HIPS). Due to the immiscibility of the system (TPS/HIPS), it was necessary to incorporate concentrations of 1, 2 and 3% of an organophilic montmorillonite (MMT) to improve the properties of the mixtures, in particular their rigidity. The composites thus prepared were characterized using XRD, FTIR, mechanical test, degree of swelling in water and biodegradability. The results show that the addition of MMT improves the mechanical properties of the mixtures such as the tensile strength and the Young’s modulus by 5% and 10%, respectively. In contrast, the resilience of the system has significantly decreased. Moreover, for 3% of MMT, the composites biodegradability is enhanced by 15% when compared to the TPS/HIPS mixture without MMT.
Current Developments in Automated Citrus Harvesting

The area of intelligent automated citrus harvesting has become a renewed area of research in recent years. The renewed interest is a result of increased economic demand for better solutions for selective automated citrus harvesting than are currently available by purely mechanical harvesters. Throughout this paper the main challenges facing intelligent automated citrus harvesting are addressed: fruit detection and robotic harvesting. The area of fruit detection is discussed, and incorporates the important properties of citrus that can be used for detection. Robotic harvesting is covered, and involves the discussion of the main mechanical design needs as well as the use of visual servoing for the control of the robotic harvester. A description of our proposed intelligent citrus harvesting system as well as our current prototype is presented.
A fast reduced-order model for the full-wave FEM analysis of lossy inhomogeneous anisotropic waveguides

The evaluation of the frequency response of waveguiding structures by means of the full-wave finite-element method requires solving a large generalized eigenvalue problem for each frequency. This paper describes a novel approach, based on the singular-value decomposition, which drastically reduces the order of the eigenvalue problem. By inspection of the singular values, the accuracy level of the procedure may be controlled. The technique is applied to the analysis of open and closed waveguides with arbitrary cross section, lossy conductors, and anisotropic dielectric layers, by means of vector elements of generic order; higher order elements are shown to allow the accurate evaluation of fields inside lossy conductors with fewer unknowns, besides exactly modeling normal field discontinuities at material interfaces. Examples of application of the reduced-order technique are shown concerning both non-TEM and quasi-TEM structures.
Molecular Dynamics Simulations of the Glass Transition Temperature of Amorphous Cellulose

Molecular modeling and dynamics simulations were used to generate equation of state properties of amorphous cellulose with the reactive force field ReaxFF which has been extensively parameterized and validated for hydrocarbon in a previous communication. Obtaining specific volume as a function of temperature for amorphous cellulose, the change in slope of the specific volume vs. temperature curves can be used to locate glass transition temperatures (Tg) reliably. With the results, there was reasonable agreement between experimental results and values of density and Tg obtained from the simulations. In addition, the suitable ReaxFF time step was investigated to help conserve the total energy of the system. The results show that the glass transition temperature can be used to verify the equilibration of the amorphous cellulose and to provide insight into the further deformation simulations.
Molecular Detection and Phylogenetic Analyses to Evaluate the Evolutionary Pattern of N, P, and G Gene Sequences of Some Recent Rabies Virus (RABV) Isolates from Elwadi- Elgedid Province in Egypt.

| Rabies is a fatal zoonotic infection caused by negative-strand RNA-virus classified in the genus Lyssavirus , family Rhabdoviridae of the order Mononegavirales . Despite the importance of the RABV for human and animal health, little is known about the spread of the virus in different animal populations in Egypt. Therefore, the current study aimed to identify and analyze the nucleotide sequences of nucleoprotein (N), phosphoprotein (P) and Glycoprotein (G) genes of the rabies virus from 10 suspected rabid cases of cattle and foxes from Elwadi- Elgedid province, which collected in 2017-2019. Specimens from the brains of suspected animals with rabies were collected and identified using direct FAT and RT-PCR. Three positive samples were further subjected to sequencing the partially amplified N, P, and G genes. The phylogenetic analysis was performed concerning the Egyptian rabies virus isolates, vaccinal strains and other sequences from the neighbouring countries available on the GenBank. It was found that the nucleotide identity in comparison to our new Egyptian isolates of Elwadi- Elgedid decreases by time at the level of three genes of previously isolated strains. Our results revealed that these new RABV isolates were more homologous to each other and were genetically related to Egyptian dog rabies, which previously identified two decades ago. The studied vaccinal strains were of low nucleotide identity with the new isolates. They also share some similarities with the RABV isolates in the neighbouring endemic regions in the Middle East. Furthermore, these data extend our knowledge of the relatedness and genetic variation of RABVs circulating in Egypt.
Wide-field multifiber spectroscopy with FLAIR II

The 1.2-m United Kingdom Schmidt Telescope has operated a wide- field spectroscopy service for a number of years. A new common- user system has recently been completed. The instrument, known as FLAIR II, offers many more fiber channels than its predecessors, together with wider spectral coverage and faster turn-round of target fields. This paper describes FLAIR II in its present-day form, highlighting the most innovative aspects of its design, and giving a critical evaluation of its performance. Its impact has been significant, and large data-sets are being accumulated for a variety of object-classes.
Observations on resonant cavity perturbation by dielectric objects

Microwave resonators can be used as sensors for sorting dielectric objects. Differences in volume or mass can be distinguished among objects of irregular shape but of uniform dielectric properties. Moisture content, or other permittivity-dependent qualities can also be distinguished independent of mass or volume when objects are of uniform shape. Fundamental principles of the shape-independent and size-independent measurements are discussed, and experimental results are presented. >
The Research of the Lane Detection Algorithm Base on Vision Sensor

The intelligent vehicle is an important area country in recent years of painstaking research in Intelligent Transportation System, which become the focus of the study, based on the visual structure of the road environment recognition. Aiming at the robust and real time problems of lane detection in the visual navigation system of intelligent vehicles, a robust lane detection method is proposed for the structured road. It can provide for intelligent vehicle automatically to maintain lane and changing lanes traveling lane information necessary to make smart vehicle to achieve a smooth, safe driving. Due to the complexity of the road itself, the complexity of the road image, Therefore, the pre-road established certain assumptions and these assumptions and the detection algorithm is combined to further improve the algorithm efficiency. Simulation test of the collected road images results show that the lane detection method designed in this study is stable enough to show the lane Position for engineering application not matter in good or poor illumination road condition.
Position estimation for intelligent vehicles using an unscented Kalman filter

This paper proposes a data fusion method for intelligent vehicles, which integrates the data from odometry and magnetic sensors. Errors due to the wheels slippage or roughness of the ground will inevitably be accumulated during the dead-reckoning based on odometry. The magnetic sensors are used to provide absolute positioning reference. The data from odometry and the magnetic sensors are integrated by using an Unscented Kalman Filter (UKF). The UKF method for position estimation is compared with the Extended Kalman Filter (EKF) method. A field experiment is performed, and the results show that the UKF is more accurate in estimating the position of the intelligent vehicle than the EKF.
Genetic influence on components of wood density variation in white spruce

1Centre de recherche sur les matériaux renouvelables, Département des sciences du bois et de la forêt, Université Laval, 2425 Rue de la Terrasse Québec, Québec G1V 0A6, Canada 2Canada Research Chair in Forest Genomics, Forest Research Centre and Institute for Systems and Integrative Biology, Université Laval, 1030, Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada 3Natural Resources Canada, Canadian Wood Fibre Centre, 1055 du PEPS, PO Box 10380, Québec City, Québec G1V 4C7, Canada 4European Forest Institute, Bioeconomy Programme, Yliopistokatu 6 B, 80100 Joensuu, Finland
Finite Element Analysis of Laminating Tools for Automotive Interior Parts

This paper presents a method of finite element modeling and analysis used in the process of development of laminating tools of automotive interior parts. In this research, the automotive interior part considered for analysis is a center console part covered with leather. This part is subjected to concentrated loading and the stress variation within the complete assembly is determined. Also, due to the fact that the leather is stretched and glued to the plastic part using heat transfer between two molds, a thermal assessment is necessary. The results, in the form of deformations and tensions, and conclusions of both analyses will demonstrate the need to use this method in the development of laminating tools of automotive interior parts.
Appropriate modeling for integrated flood risk assessment

Another issue of how to obtain and evaluate a DSS's overall performance is addressed by the use of Uncertainty Analysis (UA). Amongst the various approaches, UA is commonly found to be an important methodology for evaluating DSS performance. UA can provide insight into uncertainty contributions from different system components. This can provide comprehensive presentations of the system outcome to aid decision making. However, there are a number of difficulties related to UA for DSS, particularly the propagation of model uncertainty through an integrated system of multiple component models - this has not been observed in the literature so far. This issue has been addressed by the use of the scenario tree method adopted in this thesis.
Convolution neural network based covid-19 screening model

Coronavirus Disease 2019 (COVID-19) is a high death rate respiratory condition that requires easy-to-reach markers for prediction. The electrocardiograph (ECG) alterations that may occur after COVID-19 hospitalization have not been fully studied yet. COVID-19 also affects heart function, which can be seen on an ECG. As a result, ECG can be used to detect virus-infected individuals. The database consists of ECG images. In this scenario, a convolution neural network (CNN) is utilized to classify COVID-19 ECG. The model is made up of eight layers, including a convolution layer, a max-pooling layer and a dense layer. The ECG image is fed into a CNN model, which classifies the COVID-19 ECG. The model provides us with 98.11% accuracy, 98.6% sensitivity and 96.40% specificity. Although 100.00% of the categorization of normal images and COVID-19 ECGs were not accurately determined by the proposed CNN model, this is the first CNN model to categorize ECG images into normal and COVID-19 classes from the ECG database and provide additional diagnostic to medical experts. © 2021 ASSA.