Miracle-dz/UniFAR-FTUs huggingface dataset:
Tamanho Ótimo Amostral e Análise Fatorial e Correlacional do Desempenho de Indivíduos sob a Influência de Plataformas Computacionais de Apoio ao Ensino

Usage of new technologies in educational scope raises several questions about the efficiency of these approaches and which beneĄts they provide to the academic Ąeld. Investigations in this area cover a line of research called Learning Analytics and, in the literature, many papers that analyze new technological proposals are only aimed at observing improvements that the use of tools can cause. Such researches do not analyze whether the sample size is robust to ensure reliability of results or whether the tool enhancement tends to maintain some inĆuence over studentsŠ performance. Based on this, this thesis determined an optimal sample size of 25 students for the performance analysis of students who do not use teaching support technologies and of 20 students for classes in contact with educational platforms. An Experiments Manager was also developed to organize the visibility of Classroom eXperience (CX) platform functionalities and, using this Experiments Manager, a Factorial Analysis of Variance and a Correlation Analysis were performed. It was observed that studentsŠ performance was inĆuenced by the interaction between CX functionalities and the courses taken by students. In all undergraduate classes, there were signiĄcant increases in student performance in a comparison between the absence of CX and its use with the platform functionalities. Theoretical and mathematical undergraduate courses also presented moderate correlations between the platform usage level and studentsŠ performance. Thus, the platform usage positively inĆuenced the grades of undergraduate students and it was inferred that students who interacted more with CX also obtained the best grades in their classes. In graduate classes, there was no signiĄcant difference in students performance between CX levels of usage, nor the occurrence of correlations that indicated something similar to what happened with undergraduates, although there have also been increases in studentsŠ performance at this academic level.
High-Voltage and High-Current Id–Vds Measurement Method for Power Transistors Improved by Reducing Self-Heating

In this letter, an improved measurement method for power transistors is proposed to obtain drain-current characteristics as a function of drain-source voltage (<inline-formula> <tex-math notation="LaTeX">${I}_{\text {d}}$ </tex-math></inline-formula>–<inline-formula> <tex-math notation="LaTeX">${V}_{\text {ds}}$ </tex-math></inline-formula>) in high-voltage and high-current (HVHC) ranges. A simple double pulse test (DPT) is utilized in our previous method. However, the self-heating of the device under test (DUT) is not ignorable in the range of high <inline-formula> <tex-math notation="LaTeX">${I}_{\text {d}}$ </tex-math></inline-formula>. The improved test circuit is equipped with an additional transistor connected in parallel to DUT in order to prevent the flow of a large current into DUT before the measurement. When a trench-gate type SiC MOSFET (Metal-Oxide-Semiconductor Field-Effect-Transistor) is used as a DUT, the power loss of the DUT decreases by about 80%. The transient thermal analysis shows that the die temperature rise is suppressed by up to 10 °C in about 200 A ranges. The newly obtained <inline-formula> <tex-math notation="LaTeX">${I}_{\text {d}}$ </tex-math></inline-formula>–<inline-formula> <tex-math notation="LaTeX">${V}_{\text {ds}}$ </tex-math></inline-formula> characteristics are utilized to model the SiC trench MOSFET. The device model reproduces the measured switching waveforms very accurately.
Anatomy and pathology of the rotator interval at MR arthrography

Poster: "ECR 2015 / C-1621 / Anatomy and pathology of the rotator interval at MR arthrography" by: "B. Upadhyay1, A. P. Toms2; 1Basildon/UK, 2Norwich/UK"
Towards multisemiotic literacy : constructing explanations in secondary science classrooms

This thesis is protected by copyright, with all rights reserved. By reading and using the thesis, the reader understands and agrees to the following terms: 1. The reader will abide by the rules and legal ordinances governing copyright regarding the use of the thesis. 2. The reader will use the thesis for the purpose of research or private study only and not for distribution or further reproduction or any other purpose. 3. The reader agrees to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
Control Force Compensation in Ground-Based Flight Simulators

This paper presents the results of a study that investigated if controller force compensations accounting for the inertial forces and moments due to the aircraft motion during flight have a significant effect on pilot control behavior and performance. Seven rotorcraft pilots performed a side-step and precision hovering task in light turbulence in the Vertical Motion Simulator. The effects of force compensation were examined for two different simulated rotorcraft: linear and UH-60 dynamics with two different force gradients of the lateral stick control. Fourmotion configurations were used: large motion, hexapod motion, fixed-base motion, and fixed-base motion with compensation. Control-input variables and task performance, such as the time to translate to the designated hover position, station-keeping position errors, and handling qualities ratings, were used as measures. Control force compensation enabled pilot control behavior and performance more similar to that under highor medium-fidelity motion to some extent only. Control force compensation did not improve overall task performance considering both rotorcraft models at the same time. The control force compensation had effects on the linear model with lighter force gradient, but only a minimal effect on pilots’ control behavior and task performance for the UH-60 model, which had a higher force gradient. This suggests that the control force compensation has limited benefits for controllers that have higher stiffness.
Drafting Route Plan Templates for Ships on the Basis of AIS Historical Data

The paper provides a description of a method of drafting route plan templates on the basis of AIS (automatic identification system) historical data. The first section features a brief background on the problem of drafting route plan templates in the light of international regulations. The main section contains a description of the methods and tools used for processing AIS data into a GRID reference system: ship traffic intensity, average COG (course over ground) and average SOG (speed over ground) as well as route plan templates. The final section includes a presentation of the research method and an analysis of the results, conducted on the basis of maps with charted paths of drafted route plan templates. The summary constitutes a synthesis of general conclusions, the advantages and disadvantages of the solution as well as areas for further research to enhance the solution.
Quantum-chemical calculations of transitional states thermodynamic parameters of tautomers of initial N,N’-disubstituted thiourea derivative during the cyclization reaction in the conditions of different solvents application

L. O. Perekhoda, H. O. Yeromina, Z. G. Ieromina © 2019 L. O. Perekhoda et al.; Published by the Institute of Molecular Biology and Genetics, NAS of Ukraine on behalf of Biopolymers and Cell. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited UDC 54.057:547.789: 544.18
Processor-in-the-loop co-simulations and control system design for a scaled autonomous multi-wheeled combat vehicle

This paper describes the design and implementation of PID and fuzzy logic controllers for tracking the desired heading angle for a scaled autonomous multi-wheeled combat vehicle (AMWCV). The challenge of designing these control systems is to control the steering of the front four wheels individually in order to obtain the correct heading angle of the vehicle. The performance of the developed controllers is validated in the presence of noise and disturbance in order to evaluate the irrobustness. A processor-in-the-loop (PIL) co-simulation is conducted to permit and achieve amore realistic situation where the developed control algorithms are evaluated while running on a dedicated processor. The obtained results from both simulation and PIL are compared. This comparison will demonstrate the controller effectiveness in tracking the desired heading angles.
TiO2/Mg-SnO2 nanoparticle composite compact layer for enhancing the performance of perovskite solar cells

As an important part of perovskite solar cells (PSCs), the compact electron transport layer largely determines the performance of devices. Titanium dioxide (TiO2) and tin dioxide (SnO2) are very common materials for the electron transport layer (ETL) in PSCs. However, less has been reported regarding the development of high efficiency mesoporous PSCs based on a SnO2 compact layer. Herein, we prepared Mg doped modified SnO2 film at high temperature, combined it with TiO2 to form a composite compact layer, and then applied PSCs with the mesoporous structure. Compared with the pristine SnO2 compact layer, the composite compact layer has excellent interface contact with perovskite and higher electronic extraction capacity. Moreover, the defect free contact between TiO2 and FTO provides stronger hole blocking ability. Devices based on composite compact layers have almost no hysteresis effect. With the composite compact layer, the devices achieved a champion PCE of 13.01%, which is a 9.79% increase compared to the pristine SnO2 compact layer device.
Multithreaded two-pass connected components labelling and particle analysis in ImageJ

Sequential region labelling, also known as connected components labelling, is a standard image segmentation problem that joins contiguous foreground pixels into blobs. Despite its long development history and widespread use across diverse domains such as bone biology, materials science, and geology, connected components labelling can still form a bottleneck in image processing pipelines. Here, I describe a multithreaded implementation of classical two-pass sequential region labelling and introduce an efficient collision resolution step, ‘bucket fountain’. Code was validated on test images and against commercial software (Avizo). It was performance tested on images from 2 MB (161 particles) to 6.5 GB (437,508 particles) to determine whether theoretical linear scaling (O(n)) had been achieved, and on 1 – 40 CPU threads to measure speed improvements due to multithreading. The new implementation achieves linear scaling (b = 0.918 – 1.068, time α pixelsb; R2 = 0.985 – 0.998), which improves with increasing thread number up to 8-10 threads, suggesting that it is memory bandwidth limited. This new implementation of sequential region labelling reduces the time required from hours to a few tens of seconds for images of several GB, and is limited only by hardware scale. It is available open source and free of charge in BoneJ.
Preparation of Carbon-Based Solid Acid Catalysts Using Rice Straw Biomass and Their Application in Hydration of α-Pinene

Carbon-based solid acid catalysts were prepared using rice straw (RS) waste, and the effects of carbonization temperature and sulfonation temperature on the catalytic activity were investigated. The properties of the catalysts were characterized using thermo gravimetric (TG), scanning electron microscope (SEM), Brunauer–Emmet–Teller (BET), Fourier transform infrared spectroscopy (FT-IR), temperature-programmed desorption (TPD), and X-ray photoelectron spectroscopy (XPS), and their activities were investigated through the hydration of α-pinene. The conversion of α-pinene and the selectivity of α-terpineol reached 67.60% and 57.07% at 80 °C and atmospheric pressure in 24 h, respectively. The high catalytic capacity of the catalyst is attributed to the high acid site density and high porosity of the catalyst. TPD analysis and FT-IR spectroscopy showed that the catalyst produced by low-temperature carbonization at 300 °C followed by low-temperature sulfonation at 80 °C had abundant strong acid sites (0.82 mmol/g), which can effectively inhibit the side reactions of hydrated α-pinene. The total acidity reached 2.87 mmol/g. N2-physisorption analysis clearly indicated that the obtained catalysts were mesopore-predominant materials, and the SBET and VTotal of catalysts reached 420.9 m2/g and 4.048 cm3/g, respectively. Preparation of the catalyst involves low energy consumption, and its cheap raw materials make the whole process simple, economical, and environmentally friendly.
Meaning of profiling of cybercriminals in the security context

In this article, the author analyzes the criminological aspects of profiling of cybercriminals. The development and trends of crime are affected by both the globalization process and the development of information technology. All over the world, crime, disorder and riots are causing more and more troubles and worries for people. Nowadays, cybercrime or criminal offenses committed in the Internet environment take a stable position in the overall mass of criminal offenses. Cyberspace is easy to use to harm an individual, a group of people, or a country as a whole. The role of profiling cybercriminals is determined by the tasks of law enforcement authorities. The profile of cybercriminal combines the personal traits of cybercriminal, behavioural patterns, and demographic data based on cybercrime characteristics.
Integrated topic modeling and sentiment analysis: a review rating prediction approach for recommender systems

: Recommender systems (RSs) are running behind E-commerce websites to recommend items that are likely to be bought by users. Most of the existing RSs are relying on mere star ratings while making recommendations. However, ratings alone cannot help RSs make accurate recommendations, as they cannot properly capture sentiments expressed towards various aspects of the items. The other rich and expressive source of information available that can help make accurate recommendations is user reviews. Because of their voluminous nature, reviews lead to the information overloading problem. Hence, drawing out the user opinion from reviews is a decisive job. Therefore, this paper aims to build a review rating prediction model that simultaneously captures the topics and sentiments present in the reviews which are then used as features for the rating prediction. A new sentiment-enriched and topic-modeling-based review rating prediction technique which can recognize modern review contents is proposed to facilitate this feature. Experimental results show that the proposed model best infers the rating from reviews by harnessing the vital information present in them.
A novel accelerated diagnostic protocol to identify Emergency Department patients with chest pain who may be suitable for discharge after a single high-sensitivity troponin : TRUST (Triage Rule-out Using high-Sensitivity Troponin) chest pain study

Background Chest pain makes up a quarter of medical admissions in the United Kingdom. A diagnostic strategy that prevents unnecessary hospital admission in a large proportion of this patient group would have significant benefits for healthcare services by reducing hospital admission rates, ED overcrowding, duplication of staff time and resource use. A clinically applicable protocol that allows the discharge of a significant proportion of patients after a single blood draw at presentation to the emergency department remains an attractive yet elusive goal. Objective To establish whether a novel accelerated diagnostic protocol (ADP) for suspected acute coronary syndrome (ACS) could successfully identify low-risk patients suitable for discharge after a single high-sensitivity troponin T (hs-cTnT) taken at presentation to the Emergency Department (ED). Comparison of the diagnostic accuracy of this ADP with strategies utilising initial undetectable hs-cTnT was made. Methods This prospective observational study evaluated the ability of the Triage Rule-out Using high-Sensitivity Troponin (TRUST) ADP to identify low-risk patients with suspected ACS. The ADP incorporated a single presentation hs-cTnT of <14ng/L, a non-ischaemic electrocardiogram and a modified Goldman risk score. Diagnostic performance of the PhD Thesis. Dr Edward W. Carlton ADP was compared with the detection limit cut-offs of hs-cTnT (<5ng/L and <3ng/L). The primary endpoint was major adverse cardiac events (MACE) occurring within 30 days. Results 960 participants were recruited, mean age 58.0 years, 97 (10.1%) had MACE. The TRUST ADP classified 382 (39.8%) as low-risk with a sensitivity for identifying MACE of 99.0% (95%CI 93.7-99.9). Hs-cTnT detection limits (<5ng/L and <3ng/L) had a sensitivity of 96.8% (90.6-99.2) and 98.9% (93.8-99.9) respectively. The TRUST ADP identified more patients suitable for early discharge at 39.8% vs 29.3% (<5ng/L) and 7.9% (<3ng/L) (P<0.001) with a lower false-positive rate for MACE detection; specificity 44.1% (95%CI 43.6-44.3) vs 32.3% (95%CI 31.6-32.6) and 8.7% (95%CI 8.1-8.8) respectively. Conclusion The TRUST ADP, which incorporates structured risk-assessment and a single presentation hs-cTnT blood draw, has potential to allow early discharge in 40% of patients with suspected ACS and has greater clinical utility than undetectable hs-cTnT strategies.
Femoral Head Fovea Capitis Variant Configurations and Age Related Changes- A Radiological Study

Background: Many studies in the literature focused on the proximal geometry of the femur using cadaveric samples, X-rays or computed tomography, demonstrated substantial differences in the proximal femoral geometry in different patient groups. Many radiological parameters have been introduced in the literature to aid in diagnosis and surgical interventions. Objectives: We aimed to assess the diameter of the femoral head fovea capitis in both genders with different age groups and to record their variant configurations. Patients and Methods: Six-hundred true pelvis anteroposterior radiographs of patients were divided into three different age groups. Results: In group 1, the general average values of fovea capitis index (FCI) in both female and male genders were 25.35% ± 4.12% and 26.82 ± 4.81%, respectively (P = 0.08). The general average FCI value of both sides was 26.08% ± 4.46%. In group 2, the general average values of FCI values in both female and male genders were 26.69% ± 5.27% and 26.88% ± 4.77%, respectively (P = 0.43). The general average FCI value of both sides was 26.78% ± 4.93%. In group 3, the general average values of FCI value in both female and male genders were 28.86% ± 4.98% and 29.16% ± 3.82%, respectively (P = 0.27). The general average value of both sides was 28.93% ± 4.40%. Conclusion: Fovea capitis size increases with aging process. It has four different configurations. Further clinical studies should be conducted to correlate the different configurations with other femoral head pathologies and anatomical variations.
SMART-Q: An Integrative Pipeline Quantifying Cell Type-Specific RNA Transcription

Accurate RNA quantification at the single-cell level is critical for understanding the dynamics of gene expression and regulation across space and time. Single molecule FISH (smFISH), such as RNAscope, provides spatial and quantitative measurements of individual transcripts, therefore, can be used to explore differential gene expression among a heterogeneous cell population if combined with cell identify information. However, such analysis is not straightforward, and existing image analysis pipelines cannot integrate both RNA transcripts and cellular staining information to automatically output cell type-specific gene expression. We developed an efficient and customizable analysis method, Single-Molecule Automatic RNA Transcription Quantification (SMART-Q), to enable the analysis of gene transcripts in a cell type-specific manner. SMART-Q efficiently infers cell identity information from multiplexed immuno-staining and quantifies cell type-specific transcripts using a 3D Gaussian fitting algorithm. Furthermore, we have optimized SMART-Q for user experiences, such as flexible parameters specification, batch data outputs, and visualization of analysis results. SMART-Q meets the demands for efficient quantification of single-molecule RNA and can be widely used for cell type-specific RNA transcript analysis.
A comparative study of an in-house handrub solution against a commercial handrub solution

Proper hand hygiene is the single most important, least expensive means of reducing infections. Alcohol based handrub have been proven to be the most effective method of hand hygiene. This study aims at testing efficacy of an in-house handrub solution and compares it with a commercial handrub solution. The sample size was 80 which included healthcare personnel. One half of the group was provided with commercial handrub and the other half with in-house handrub solution. The in-house handrub solution was prepared as per World Health Organization formula. Hand swabs were collected from participants before and after hand hygiene. The colony counts were later compared to look for the percentage of reduction in colony count. The overall reduction in the bacterial growth after using handrub solution compared to bacterial growth before using handrub solution ranged from 30.15%-100% for commercial handrub & 33.91%-100% for in-house handrub solution. The efficacy of in-house handrub is comparable to commercial handrub, significantly cheaper, practical and an effective alternative to commercial handrub solution.
Topological Transformer Leakage Modeling With Losses

This paper presents a novel leakage model for transformers that includes losses. This new model is physically based (topological) and it is possible to connect it to a topological core model without using any fictitious windings. The methods to calculate its parameters from standard test data and from design data are detailed within the paper. The results show that the new coupled leakage model with losses is able to match exactly the test report, when using standard test data. Preliminary investigations show that the results are very close to measurements, when using design data.
Uniplanar High-Gain 2-D Scanning Leaky-Wave Multibeam Array Antenna at Fixed Frequency

A new topology for 2-D scanning multibeam array antenna (MAA) design is proposed. Different from the traditional 2-D scanning scheme, this new design approach is composed of a 1-D beam-forming network (BFN) and a set of 1-D pattern-reconfigurable antennas, which can together realize 2-D multibeam scanning. Compared with traditional schemes, the proposed topology has advantages of uniplanar configuration and better flexibility in scaling up the array. To demonstrate the validity of the proposed topology, a high-gain 2-D scanning leaky-wave MAA operating at 10 GHz is designed. A horn BFN and a fixed-frequency leaky-wave antenna (LWA) are designed as the feeding part and radiation part, respectively. A number of new techniques are also developed for the design. For the horn BFN, a new phase-compensation method to reduce the gain drop is presented and phase inverters are introduced to provide an extra 180° of phase shift. Meanwhile, some modification of the LWA is conducted for better compatibility between the horn BFN and the LWA. A substrate integrated waveguide (SIW) to half-mode SIW (HMSIW) transition is introduced between the horn BFN and the LWA. The LWAs are terminally shorted to avoid the usage of matched loads. The width of the LWA is investigated to achieve suitable beam coverage and S-parameters. Finally, the antenna is fabricated and experiments are conducted to verify the agreement between simulation and measurement.