Miracle-dz/UniFAR-FTUs huggingface dataset:
Acquisition of rotor anisotropy signals in sensorless position control systems

Sensorless position control of induction motors relies on the detection of rotor anisotropies. The repetitive transient excitation through the switched voltages of the PWM inverter provides the test signals to identify the spatial orientation of the anisotropies that indicate the rotor position. The position information is contained in the inverter output voltages. These are measured against the neutral point of the star connected stator winding. The signals are heavily corrupted by disturbances. These originate from the propagation of travelling waves on a long motor cable and from the influence of high-frequency common mode currents. The paper describes how a clean position signal is extracted in the presence of such noise.
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and how patient data were analyzed using current Childhood Arthritis and Rheumatology Research Alliance registry data (we did not use the “Legacy Registry” [closed in 2012] as was stated in the editorial). We did not have an a priori hypothesis that early introduction of biologic disease-modifying antirheumatic drugs (bDMARDs) would be associated with improved disease trajectories. Instead, our finding that the introduction of bDMARDs within 3 months from baseline is associated with early attainment of inactive disease was the result of an unbiased, datadriven analysis. Furthermore, the finding that, in a subgroup of patients, achievement of CID without bDMARD treatment demonstrates a heterogeneity of the population that needs to be explored, rather than a lack of generalizability of our findings. We believe our studies demonstrated that carefully collected and rigorously analyzed prospective observational data can provide valid answers to consequential comparative effectiveness questions that are otherwise not feasible to address. Author disclosures are available at https://onlinelibrary.wiley. com/ action/downloadSupplement? doi=10.1002%2Fart.42047&file=art42047sup-0001-Disclosureform.pdf.
Planning in a heartbeat: improving the planning system of the Heart Catheterisation Rooms at the Catharina hospital Eindhoven

The cardiology department of the Catharina Hospital Eindhoven is the largest intervention- and electrophysiological centre of the Netherlands and primarily serves as a tertiary centre. Five Heart Catheterization Rooms (HCR) are at their disposal for intervention procedures, for instance angioplasties, or electrophysiological procedures as pacemaker implementations. The planning of the HCRs is currently done using two different systems: an Excel spread sheet and the hospitals’ information system EZIS. The hospital suspects that the planning system is not making optimal use of the HCRs. Therefore the aim of this research is to improve the planning system of the HCR through a better alignment of the information systems to the needs and requirements of all planning stakeholders and the primary care process. In This research the current planning system was evaluated using the Delone and McLean [2] model for information system success. The main findings from this research show the planning system is underperforming in the root dimensions of the model, system quality and information quality. The first dimension underperformed due to a lack of integration between the two systems, where the second dimension underperformed due to incomplete and inaccurate information entry in the planning system. The low information quality also prevents management from effectively steering the HCRs. A small task group was formed to investigate possible improvement alternatives for the planning system. Creating the planning completely in EZIS was selected out of four as the best alternative. This decision was based on four criteria set by the task group. The criteria are integration in information and work processes, complete and accurate information, ease of use and costs of the planning system. For the implementation of the selected alternative a sense of urgency must be created among the users. This is an essential step as interests can greatly differ in a hospital setting. After the sense of urgency is created three steps have to be executed for the implementation. First EZIS has to be tailored to the needs of the HCR. The information needs of all the phases in the planning process must be mapped. Subsequently the input and output screens of EZIS can be tailored to comply to these information needs. In the second step the work processes concerning the planning must be rearranged. This includes both the primary (care) as the secondary (administrative) processes. The first and second step should be done simultaneously to ensure that the EZIS fits the processes and vice versa. Using pilot runs and feedback of all users these two steps must be repeated until it satisfies the needs of all stakeholders. The last step is then using the system in which constant feedback must be given to and by the users so that the system can remain optimal
Diagnostic Value of Thunderclap Headache and Convexal Subarachnoid Hemorrhage for Reversible Cerebral Vasoconstriction Syndrome: A Case Report

Reversible cerebral vasoconstriction syndrome (RCVS) is an underdiagnosed cause of convexal subarachnoid hemorrhage, characterized by thunderclap headache associated with focal and segmental intracranial vasoconstriction. It can appear complications such as intracerebral hemorrhage, seizures, posterior reversible leukoencephalopathy, or ischemic stroke. Our objective is to present the case of a 51-year-old woman with an RCVS diagnosis, who had a normal digital subtraction angiography at the illness onset. We highlight the high diagnostic value of thunderclap headache and convexal subarachnoid hemorrhage. We also highlight the importance of repeating the angiographic studies in the second week when there is strong diagnostic suspicion.
A methodology for precise camera calibration for data collection applications in urban traffic scenes

Camera calibration is a necessary step in all video analysis applications to recover the real-world positions of concerned road users. Camera calibration can be performed based on feature correspondences between the real-world space and image space. In urban traffic scenes, the field of view may be too limited or video camera may not be accessible to allow reliable calibration based on vanishing points. A review of the current methods for camera calibration reveals little attention to these practical challenges that arise when studying urban intersections to support applications in traffic engineering. This study presents the development details of a robust camera calibration approach based on integrating a collection of geometric information found in urban traffic scenes in a consistent optimization framework. The developed approach was tested on six datasets obtained from urban intersections in British Columbia, California, and Kentucky. The results clearly demonstrated the robustness of the proposed ap.
Platelet-rich Fibrin for Chronic Wounds Management

Background: A chronic wound can be defined as any wound that fails to heal within a reasonable period. Platelet-rich fibrin (PRF) is a second-generation platelet concentrate. It is safe, simple, affordable and less expensive procedure in treatment of chronic wounds. Objective: This study aimed to assess safety and effectiveness of platelet-rich fibrin for treatment of chronic wounds. Patients and methods: This prospective study included 50 patients with chronic ulcer not responding to conventional therapy for at least 6 weeks, normal values blood tests especially platelet count, red blood cell count and serum albumin level. Debridement of the necrotic tissues was done using surgical and chemical debridement. The fibrin clot membrane was applied to the ulcer followed by paraffin gauze and secondary sterile dry dressing. Results: Complete wound healing occurred in 18 of 50 patients before 8th week of therapy (36%). A decrease in the mean area was observed from 7.22 ± 5.80 cm before treatment to 0.98 ± 1.52 cm after 8 weeks of therapy, which was highly significant. Conclusions: The use of PRF is effective, simple, affordable and inexpensive method allowing acceleration of healing of chronic wounds.
STUDY OF INSULATOR FLASHOVERS CAUSED BY ATMOSPHERIC ICE ACCUMULATION

This paper summarizes the results of research recently carried out on the inception and propagation of electrical discharge on an ice surface. Investigations on discharge inception were performed using a simplified physical model consisting of a rod- plane gap half submerged in ice. Empirical models are proposed, based on elements derived from the inception parameter analysis, to account for corona streamer propagation velocity and inception voltage/field on an ice surface. Furthermore, a dynamic model is proposed to predict flashover of ice- covered insulators. Assuming arc behavior to be a time dependant impedance, it was possible to determine various arc characteristics, such as leakage current time histories and flashover voltage. The results indicate the feasib ility of icing severity assessment and flashover prediction, using the proposed model.
Acceptance and Preferences of Using Ambient Sensor-Based Lifelogging Technologies in Home Environments

Diverse sensor-based technologies can be used to track (older and frail) people’s movements and behaviors in order to detect anomalies and emergencies. Using several ambient sensors and integrating them into an assisting ambient system allows for the early identification of emergency situations and health-related changes. Typical examples are passive infrared sensors (PIR), humidity and temperature sensors (H&T) as well as magnetic sensors (MAG). So far, it is not known whether and to what extent these three specific sensor types are perceived and accepted differently by future users. Therefore, the present study analyzed the perception of benefits and barriers as well as acceptance of these specific sensor-based technologies using an online survey (reaching N=312 German participants). The results show technology-related differences, especially regarding the perception of benefits. Furthermore, the participants estimated the costs of these sensors to be higher than they are, but at the same time showed a relatively high willingness to pay for the implementation of sensor-based technologies in their home environment. The results enable the derivation of guidelines for both the technical development and the communication and information of assisting sensor-based technologies and systems.
Library services for rural women empowerment in Oyo State: a case study of African Heritage Research Library and Cultural Centre, Oyo State, Nigeria

Rural women remain the most underprivileged group of the developing societies because of lack of empowerment. In the recent years, there are diverse government and non-governmental organisations and initiatives aimed at empowering rural women in order to alleviate their sufferings yet a lot of rural women are not empowered. Information is recognized as power, a critical resource and sine-qua non for true empowerment and library is an important store house of information. This paper discusses theoretical roles of libraries to rural dwellers and the importance of information in empowerment. The study adopted a qualitative approach with case study research method. Data was collected from twelve rural women (users) and four members of the management of African Heritage Research Library and Cultural Centre (AHRLC) through interview, focus group and inspection of AHRLC facilities. AHRLC is a private library situated at Adeyipo, a village in Lagelu local government area of Oyo State Nigeria The findings of the study revealed that library services such as education support services (literacy programme, reading programme, seminars and talks), economic support services (workshops and demonstration farms), culture and recreation support services were available at AHRLC and utilized by rural women at Adeyipo and its environs. Subsequently, AHRLC was perceived by rural women as solution, civilization and all purpose centre. However, lack of funds, electricity, trained manpower and motorable road were major challenges facing AHRLC. Finally, some recommendations were made as way out of the challenges.
Bactibilia-effect on postoperative course and outcome in patients with bilio-pancreatic diseases

Background: Bactibilia is detrimental to the outcomes of biliary tract surgery. The present study was undertaken to determine the microbial flora of bile and their significance to post-operative infectious complications and morbidity.Methods: A retrospective study of patients with biliopancreatic diseases who underwent surgery from Jan 2017 to March 2020 in a tertiary care hospital were analyzed. The samples were assessed for bile microbiological flora, and a search for their possible link with post-operative infectious complications and morbidity was carried out.Results: A total of 90 bile samples were assessed. The mean age of the study group was 51.8 SD-13.6 years with male predominance. Bactibilia was found in 39 cases (43.3%), mostly in patients with malignant diseases, older than 50 years and females. Escherichia coli was the most common organism. Post-operative infectious complications were seen in twenty cases, thirteen of them in bactibilia-associated patients, showing statistical significance. Statistical significance was found between the presence of pre-operative biliary stent and bactibilia and between diabetes mellitus and bactibilia. Nine out of 24 patients with comorbidities had post-operative infectious complications. No significant relationship was found between pre-operative jaundice and comorbidities with bactibilia. Conclusions: The present study showed a statistically significant relationship between the presence of pre-operative biliary stent and bactibilia and also the incidence of post-operative infectious complications and bactibilia. Microbiological analysis of bile is a valuable tool in prognosticating the post-operative complications, thereby guiding us to provide adequate therapy and helps to establish local antibiotic guidelines.
Behavior of Flame Spread Downward over Thick Wood Sheets and Heat Transfer Analysis

To investigate the flame spreading mechanism over charring materials under natural convection, wood sheets from 0.9 to 3 mm thickness have been chosen. The variation of mean flame spread velocity V with thickness δ is measured. Typical flame shapes over the wood surfaces are recorded using CCD. The temperature fields in the gas phase are examined by a set of fine thermocouples. On the basis of the results, the relative contributions of local heat transfer modes ahead of the pyrolysis front have been evaluated. It is found that heat conduction through solid phase increases notably with δ. A flame spreading model coupled with a pyrolysis structure is proposed.
Financial well-being of Vietnamese students

This study aims to analyze financial well-being as well as the factors affecting the financial well-being of Vietnamese students. The study surveyed 658 students in Vietnam via email and Facebook groups with suitable survey subjects in the period from May to June, 2021. The study also collected demographic information and the status of independence or financial dependence of students participating in the survey in Vietnam. The study analyzes the direct and indirect effects of six groups of independent factors on the financial well-being of Vietnamese students through the PLS-SEM model. Empirical study results show that three factors, such as Financial Attitude, Financial Behavior, and Financial Self-Efficacy, have a direct impact, while two other factors, Financial Knowledge and Financial Skills, have an indirect impact on financial well-being of students in Vietnam. Although there are some limitations in the representative level of students participating in the survey, sampling methods and the number of respondents in the survey, the study achieved its research objectives. This study provides more empirical evidence and insights to the Ministry of Education and Training and economics universities in designing training programs that equip students with knowledge and skills to achieve financial well-being. AcknowledgmentThe author wishes to acknowledge support from the Banking University of Ho Chi Minh City. The author would like to thank all the lecturers and students for their support in sharing the survey, and the students who completed the survey. This study was made possible thanks to all valuable support from relevant stakeholders.
pH-responsive supramolecular nanoparticles based on sulfobutylether7-β-CD/cationic surfactant and its controllable release of doxorubicin

Abstract Novel supramolecular nanoparticles were successfully built by sulfobutylether7-β-cyclodextrin and benzyl dodecyl dimethyl ammonium bromide. The assembly and disassembly behavior were determined by UV–Vis, Tyndall effect, dynamic light scattering, transmission electron microscopy, and zeta potential. Upon decreasing pH values, the resulting nanoparticles disassemble. The nanoparticles will be restored to spherical nanoparticles when the pH increases to the initial value. Due to the negative zeta potential, the nanoparticles showed good loading capacity for doxorubicin (DOX). DOX-loaded nanoparticles exhibited pH-responsive drug release behavior and possess higher cytotoxicity than the positive control, cisplatin. Thus, the simple and effective supramolecular nanoparticles with desirable load/release DOX property was constructed as pH-responsive drug delivery system. Graphical Abstract
Performance of Low-Cost Ejectors

Despite its widespread use in agricultural systems, the Venturi-type ejector presents lower efficiency than that obtained by conventional jet pumps. In this study, low-cost ejectors built from PVC T-junctions, with geometry similar to that of the conventional jet pumps, were developed and evaluated experimentally. The tests were carried out on ejectors with nominal diameters of 25 and 32 mm with area ratios of 0.25, 0.35, and 0.53. For each diameter, a Venturi-type ejector with an area ratio of 0.35 was also employed. The ejectors developed in this research presented efficiency between double and triple of that of the Venturi type, with a maximum of 30.5% being reached with the ejector of 25 mm and area ratio of 0.35. The head-loss coefficients for each component of the ejectors were evaluated by fitting a one-dimensional model. The results showed that the low-cost ejectors developed here presented an operation comparable to that of conventional jet pumps and had a better benefit/cost ratio than the Venturi-type ejectors.
The Prediction-Explanation Fallacy: A Pervasive Problem in Scientific Applications of Machine Learning

In this paper, I highlight a problem that has become ubiquitous in scientific applications of machine learning methods, and can lead to seriously distorted inferences about the phenomena under study. I call it the prediction-explanation fallacy. The fallacy occurs when researchers use prediction-optimized models for explanatory purposes, without considering the tradeoffs between explanation and prediction. This is a problem for at least two reasons. First, prediction-optimized models are often deliberately biased and unrealistic in order to prevent overfitting, and hence fail to accurately explain the phenomenon of interest. In other cases, they have an exceedingly complex structure that is hard or impossible to interpret, which greatly limits their explanatory value. Second, different predictive models trained on the same or similar data can be biased in different ways, so that multiple models may predict equally well but suggest conflicting explanations of the underlying phenomenon. In this note I introduce the tradeoffs between prediction and explanation in a non-technical fashion, present some illustrative examples from neuroscience, and end by discussing some mitigating factors and methods that can be used to limit or circumvent the problem.
HALL TECHNIQUE VERSUS THE CONVENTIONAL STAINLESS STEEL CROWNS RESTORING CARIOUS PRIMARY MOLAR TEETH: A RANDOMIZED CONTROLLED CLINICAL TRIAL

INTRODUCTION: Dental caries is considered the most common chronic disease affecting children globally, management of carious primary molars has evolved and a shift has occurred from the early conventional approaches where carious tissue was completely removed to the more recent biologic/ minimally invasive approaches that require less caries removal or no caries removal; one of the recent approaches is the Hall technique. Objectives: Compare the clinical and radiographic success of the stainless steel crowns (SSCs) placed by the Hall technique (HT) to the conventional method in restoring carious primary molars across one year. Materials and Methods: Parallel randomized controlled trial, participants were allocated in the Faculty of Dentistry, Alexandria university, Egypt. One hundred and four primary molars in fourto eight -year-old children were randomly divided into two treatment groups. Teeth were assessed at one week, one, six and 12 months for clinical success using standardized criteria showing either success, minor or major failure and at six and 12 months for radiographic evaluation. Success/failure rates were compared using chi square test. McNemar’s test was applied in testing changes within each group. Results: No significant differences clinically or radiographically between the two groups at all follow ups periods. The HT group and the conventional groups showed (94.2%) and (88.5%) success rates respectively. Failures in both groups were major failures. Conclusions: The Hall technique showed comparable results when compared to that of the conventional SSC restorations for treatment of carious primary molar teeth that were not pulpally involved.
Prevalence of anxiety and depression among hypertensive patients: a systematic review

Hypertension is the elevation in the blood pressure level, and it is responsible for cardiovascular diseases. Depression and anxiety diseases are the most common mental disorders globally. Depression is common among patients with chronic disorders, including hypertension, and there are conflicts regarding the correlation between hypertension and anxiety. To assess the prevalence of anxiety and depression among hypertensive patients. PubMed and Google Scholar databases were searched for articles on the current subject starting from 2017 to 2021. The included searching terms included “Prevalence of depression and hypertension, Prevalence of anxiety and hypertension, Anxiety among hypertensive patients, Depression among hypertensive patients. ” The inclusion criteria included full original articles conducted on patients with hypertension and assessed the prevalence of anxiety, depression, or both. We obtained 70 articles; only 10 articles were eligible for the inclusion criteria. The 10 studies included a total number of 2,581 participants and covered 6 countries. The findings of this systematic review showed that the overall prevalence of depression and anxiety ranged from 57.3% to 77.8%. The most-reported factors associated with the prevalence of depression and anxiety among hypertensive patients included gender and educational level. The prevalence of depression and anxiety among hypertensive patients varied based on several factors and the stage of hypertension; however, they were highly prevalent in general. Adequate control of blood pressure is necessary.