Miracle-dz/UniFAR-FTUs huggingface dataset:
Distribution of various histopathological patterns of ovarian lesions in different age groups

The spectrum of ovarian pathologies embraces wide age range among females because the risk of developing ovarian lesion starts from birth and follows diverse patterns through-out the life.1,2 The rate of development of complications, recurrence, progression to malignancy, morbidity and mortality, also varies according to the age of presentation of various ovarian pathologies.3,4,5 The prevalence of cystic lesions of ovary is more in reproductive age group as compared to post-menopausal women.6,7 Malignant neoplasms have more been observed in an advanced age group.8,9,10 The current study is aimed to observe the distribution of various histopathological patterns of ovarian lesions in different age groups. This study may be beneficial in stratifying patients, into different risk based groups and prognosis associated groups, depending upon the age of patient at the time of presentation. Methods: Total 150 cases of ovarian lesions were selected by convenient sampling in current descriptive study, carried out at Pathology department of Fatima Jinnah Medical University, Lahore from May, 2019 till June, 2020. Routine H & E stained sections, from specimens of total abdominal hysterectomy with unilateral or bilateral salpingo-oophorectomy, unilateral or bilateral oophorectomy and salpingo-oophorectomy procedures, done either for primary ovarian lesion or other than primary ovarian pathology, in all age groups, were included. Results: A majority of ovarian lesions 123 (82%) were observed in the reproductive age group, mostly being non-neoplastic (89.5%). Out of 19 post-menopausal patients, 12 presented with malignant neoplasms. All patients belonging to pre-pubertal age group had non-neoplastic pathologies. Conclusion: The malignant ovarian tumors are prevalent in post-menopausal patients while reproductive age group predominantly exhibits non-neoplastic and benign ovarian lesions. The pre-pubertal age group commonly present with non-neoplastic ovarian pathologies. Keywords: Histopathological patterns of ovarian lesion, Malignant ovarian tumors, Reproductive age group.
The Effect of an Intercultural Communication Model on the Reading Comprehension of Refugee and Underprivileged Learners

This study describes a shifting of paradigm in the literacy education of Syrian refugees and underprivileged Lebanese learners (n = 72) in three eighth-grade classes in a public school in Lebanon. The study used a pre/post experimental control-group design to address its research questions. As complement to a Human Rights Education curriculum framework suggested in 2018, an intercultural communication model named the Third Space Literature Circle (TSLC) is offered, its goal to improve the reading comprehension of underprivileged Syrian and Lebanese learners. An experimental group (n=49), received the TSLC model instruction whereas the control group (n=23), received the regular reading instruction. Results show that the experimental group outperformed the control group; in particular, some members of the experimental group became more fluent describing their experiences than their control group-counterparts.
Metrological traceability of impedance parameter measurements in Ukraine

The equivalence rates of the national standard of a unit of electrical capacitance for denominations of 10 pF and 100 pF at frequencies of 1 kHz and 1.592 kHz and expanded uncertainties obtained from the results of international comparisons of national measurement standards for electrical capacitance units were established and their comparative analysis was carried out. The equivalence of the national standard of the inductance unit for the nominal values of 10 mH and 100 mH at a frequency of 1 kHz and the expanded uncertainties obtained from the results of international additional comparisons of the national measurement standards of inductance units were established and their comparative analysis was carried out. The comparisons were conducted by Regional Metrology Organizations with the participation of the National Metrology Institute of Ukraine. The analysis of the data processing methods applied in the comparison reports was carried out with the aim of adequately evaluating the results obtained by each of the comparison participants. The results of the National Metrology Institute of Ukraine became the basis for establishing the metrological traceability of measurements of impedance parameters in the country and the recognition of the results of these measurements in other countries. Values of the expanded uncertainty of the measurements of the electrical capacitance in the range of values from 10 pF to 10 nF for high­precision calibration of the measures of electrical capacitance were calculated. Values of the expanded uncertainty of inductance measurements in the range from 1 µH to 10 H with high­precision calibration of inductance measures were calculated. The best values of the expanded uncertainty of measurements of impedance parameters (electrical capacitance and inductance) in a wide range of values in Ukraine were established. The comparative analysis showed that the published data on the calibration and measurement capabilities of the national metrology institutes of Ukraine for measuring the electrical capacitance and inductance can be significantly improved in wide ranges of values.
An abstract inverse problem for boundary triples with an application to the Friedrichs Model

We discuss the detectable subspaces of an operator. We analyse the relation between the M-function (the abstract Dirichlet to Neumann map) and the resolvent bordered by projections onto the detectable subspaces. The abstract results are explored further by an extensive study of the Friedrichs model, together with illustrative applications to the Schroedinger and Hain-Luest-type models.
Researchers’ hate-love relationship to performance measurement systems in academia – a Foucauldian perspective

Purpose The purpose of this paper is to describe and theorize the type of hate-love relationship to performance measurement systems (PMSs) that individual researchers tend to develop in academia. To this end, the paper draws upon Foucault’s writings on neoliberalism to analyse PMSs as neoliberal technologies holding certain qualities that can be expected to elicit such ambivalent views. Design/methodology/approach The paper is based on a qualitative interview study of researchers from three Swedish universities, who were asked to reflect upon questions related to three overall themes, namely, what it means to be a researcher in contemporary academia, the existence and use of PMSs at their universities and if/how such PMSs affected them and their work as researchers. Findings The empirical findings show that the hate-love relationship can be understood in terms of how PMSs are involved in three central moments of governmentality, where each such moment of governmentality tends to elicit feelings of ambivalence among researchers due to how PMSs rely on: a restricted centrifugal mechanism, normalization rather than normation and a view of individual academics as entrepreneurs of themselves. Originality/value Existing literature has provided several important insights into how the introduction and use of PMSs in academia tend to result in both negative and positive experiences and reactions. The current paper adds to this literature through theorizing how and why PMSs may be expected to elicit such ambivalent experiences and reactions among individual researchers.
Efficacy of Repeating Pulmonary Rehabilitation in People with COPD: A Systematic Review

Background Pulmonary rehabilitation is an effective intervention for people with chronic obstructive pulmonary disease (COPD). People with COPD undertake repeat programs, but synthesis of evidence regarding such practice has not been undertaken. The aim of this systematic review was to establish the effects of repeating pulmonary rehabilitation subsequent to an initial program in people with COPD. Methods Studies where participants with COPD undertook >1 pulmonary rehabilitation program were included, incorporating RCT (randomized controlled trial) and non-randomized studies. Electronic database searches were undertaken. Two authors independently undertook study identification, data extraction and risk of bias assessment. The primary outcome was health-related quality of life (HRQoL); secondary outcomes were exercise capacity, hospitalizations and exacerbations, adherence, mortality and adverse events. Narrative synthesis was undertaken for clinically heterogeneous trials. Data from RCTs and non-randomized studies were not combined for analysis. Results Ten included studies (2 RCTs) involved 907 participants with COPD (n=653 had undertaken >1 program). The majority of studies were at high risk of bias. One RCT (n=33) reported no difference in HRQol after a repeat program vs usual care following exacerbation (Chronic Respiratory Disease Questionnaire dyspnea domain score MD 0.4, 95% CI −0.5 to 3). In stable patients, clinically important and statistically significant improvements in HRQoL and exercise capacity were reported after repeat programs, but of a smaller magnitude than initial programs. There was evidence for reductions in exacerbations and hospitalizations, and shorter hospital length of stay for patients who repeated a program twice in 12 months compared to those who repeated once. No data for mortality or adverse events were available. Conclusion This systematic review provides limited evidence for benefits of repeating pulmonary rehabilitation in people with COPD, including improved HRQoL and exercise capacity, and reduced hospitalizations. However, most studies have high risk of bias, which reduces the certainty of these conclusions. Study Registration PROSPERO (CRD42020215093).
Exploring the impacts of education and unemployment on CO2 emissions

The role of human capital and unemployment has been debated in a limited number of empirical studies that have aimed to study the discipline of environmental sustainability. Therefore, by Employing a reliable autoregressive distributed lag (ARDL) model approach, this study examines the dynamic linkage between education, unemployment, and CO2 emissions, by using the Chinese economy ’ s dataset from the time period pertaining to 1991 – 2020. The vivacious side of human capital shows that variables such as literacy rate and the average year of schooling curb CO2 emissions in the long run. Moreover, Human capital results are also based on facts in terms of their magnitude and direction. Also, empirical findings have unfolded that unemployment significantly increases CO2 emissions in the long-run. However, the short-run has estimated that the coefficients of education and unemployment provide similar results. Based on these novel findings, a wide set of economic policies are required and hence suggested for maintaining the environmental quality.
Curriculum flexibility in a blended curriculum

This study offers insights into the processes that play a role in realising curriculum flexibility. Curriculum flexibility is conceptualised in terms of adaptability and accessibility of the curriculum to students’ needs and capabilities. To realise curriculum flexibility, the teacher education institution in this study designed a blended curriculum with face-to-face and online components. This flexible curriculum aimed at increasing student enrolment and allowing for variety in students’ graduation portfolios. Through semi-structured interviews with 10 teacher educators, conditions that could foster or hinder the realisation of flexibility were investigated. Results indicate that different contextual, teacher-, and student-related conditions were perceived to affect (further) curriculum flexibility. Furthermore, teacher educators identified several challenges related to these influential conditions, which were recognised as tensions. Based on a discussion of these findings, recommendations for research and practice are given.
A Nonisolated Common-Ground High Step-Up Soft-Switching DC–DC Converter With Single Active Switch

In this article, we present a new nonisolated high-gain (HG) dc–dc topology. Using a magnetically coupled inductor, the proposed topology can reach a higher voltage gain than those of the other topologies with a moderate duty cycle. The voltage gain will be expanded further by enhancing duty cycle of the active power switch or the turn ratio (N). The resonance passive clamping circuits are presented to recycle the energy of leakage inductance and mitigating voltage spikes on the primary power mosfet efficaciously. Then, the output diode's reverse-recovery problem is lightened by the resonance between the leakage inductance and resonance capacitor. Accordingly, the efficiency of the presented HG converter can be improved. The active power switch turns on and off in the zero-current switching and zero-voltage switching modes, respectively. The numerical investigation and MATLAB/Simulink simulations are depicted in detail. Likewise, an experimental setup is developed using a 100 W solar panel that supplies the suggested dc–dc converter, validating the introduced analysis and simulations.
Nurses’ Perception of Patient Safety Culture in a Referral Hospital: A Cross-Sectional Study

Healthcare systems are becoming increasingly complex which is helping to promote a ‘culture of safety’ within them based on the best scientific evidence available. Indeed, creating a positive institutional culture of patient safety is reflected in health outcomes. The aim of this present study was to describe the perception of culture of safety by nurses in adult inpatient units in a tertiary hospital and to analyze adverse events reporting. It was a cross-sectional study in which 202 nurses from adult hospitalization units of the Hospital Universitario y Politécnico La Fe in Valencia (Spain) participated. The perception of safety culture was measured using the Hospital Survey on Patient Safety questionnaire version 1.0, which consists of 42 items distributed in 12 dimensions that are considered strengths or weaknesses. In addition, adverse events related to nursing care during the study period and those reported in the official hospital registry were collected. Finally, the association between safety culture and sociodemographic and labor variables was explored. A total of 148 responses to the questionnaire were analyzed (Cronbach’s alpha = 0.94), where seven dimensions and 25 items were identified as weaknesses. Two hundred and fourteen events were identified and none were reported in the official registry. Years of experience were significantly (p < 0.05) associated with safety culture. It is necessary to establish strategies to improve the perception of the safety culture of nurses, as well as to make nurses aware of the importance of notifying adverse events derived from health care.
Mechanical Characterization of Anhydrous Microporous Aluminophosphate Materials: Tridimensional Incompressibility, Ductility, Isotropy and Negative Linear Compressibility

Here, a detailed mechanical characterization of five important anhydrous microporous aluminophosphate materials (VPI-5, ALPO-8, ALPO-5, ALPO-18, and ALPO-31) is performed using first principles methods based on periodic density functional theory. These materials are characterized by the presence of large empty structural channels expanding along several different crystallographic directions. The elasticity tensors, mechanical properties, and compressibility functions of these materials are determined and analyzed. All of these materials have a common elastic behavior and share many mechanical properties. They are largely incompressible at zero pressure, the compressibilities along the three crystallographic directions being frequently smaller than 5 . Notably, the compressibilities of ALPO-5 and ALPO-31 along the three principal directions are smaller than this threshold. Likewise, the compressibilities of ALPO-18 along two directions are smaller than 5 . All of the considered materials are shear resistant and ductile due to the large bulk to shear moduli ratio. Furthermore, all of these materials have very small mechanical anisotropies. ALPO-18 exhibits the negative linear compressibility (NLC) phenomenon for external pressures in the range P = 1.21 to P = 2.70 GPa. The minimum value of the compressibility along the [1 0 0] direction, 30.9 , is encountered for P = 2.04 GPa. The NLC effect in this material can be rationalized using the empty channel structural mechanism. The effect of water molecule adsorption in the channels of ALPO-18 is assessed by studying the hydrated ALPO-18 material (ALPO-18W). ALPO-18W is much more compressible and less ductile than ALPO-18 and does not present NLC effects. Finally, the effect of aging and pressure polymorphism in the mechanical properties of VPI-5 and ALPO-5 is studied. As hydration, aging leads to significant variations in the elastic properties of VPI-5 and increases substantially its compressibility. For ALPO-5, pressure polymorphism has a small impact in its elasticity at zero pressure but a large influence at high pressure.
A proposed artificial intelligence-based real-time speech-to-text to sign language translator for South African official languages for the COVID-19 era and beyond: In pursuit of solutions for the hearing impaired

Background The emergence of the coronavirus disease 2019 (COVID-19) pandemic has resulted in communication being heightened as one of the critical aspects in the implementation of interventions. Delays in the relaying of vital information by policymakers have the potential to be detrimental, especially for the hearing impaired. Objectives This study aims to conduct a scoping review on the application of artificial intelligence (AI) for real-time speech-to-text to sign language translation and consequently propose an AI-based real-time translation solution for South African languages from speech-to-text to sign language. Methods Electronic bibliographic databases including ScienceDirect, PubMed, Scopus, MEDLINE and ProQuest were searched to identify peer-reviewed publications published in English between 2019 and 2021 that provided evidence on AI-based real-time speech-to-text to sign language translation as a solution for the hearing impaired. This review was done as a precursor to the proposed real-time South African translator. Results The review revealed a dearth of evidence on the adoption and/or maximisation of AI and machine learning (ML) as possible solutions for the hearing impaired. There is a clear lag in clinical utilisation and investigation of these technological advances, particularly in the African continent. Conclusion Assistive technology that caters specifically for the South African community is essential to ensuring a two-way communication between individuals who can hear clearly and individuals with hearing impairments, thus the proposed solution presented in this article.
Convex analysis and variational problems

Preface to the classics edition Preface Part I. Fundamentals of Convex Analysis. I. Convex functions 2. Minimization of convex functions and variational inequalities 3. Duality in convex optimization Part II. Duality and Convex Variational Problems. 4. Applications of duality to the calculus of variations (I) 5. Applications of duality to the calculus of variations (II) 6. Duality by the minimax theorem 7. Other applications of duality Part III. Relaxation and Non-Convex Variational Problems. 8. Existence of solutions for variational problems 9. Relaxation of non-convex variational problems (I) 10. Relaxation of non-convex variational problems (II) Appendix I. An a priori estimate in non-convex programming Appendix II. Non-convex optimization problems depending on a parameter Comments Bibliography Index.
Risk Factors for Calcific Aortic Valve Disease in Afghan Population

Objective Evidence from previous studies suggests that calcific aortic valve disease (CAVD) is not an unavoidable consequence of aging, and may be linked to explicit risk factors. However, little is known regarding the Afghan population in this context. The current study aimed to identify the clinical features of CAVD and determine independent risk factors for CAVD in the Afghan population. Patients and Methods A case-control study was conducted among 1072 Afghan participants (age >18 years) from January 2018 to December 2020. The study participants were divided into two groups based on echocardiographic findings: 536 individuals with CAVD and 536 age- and sex-matched controls. Data were collected using questionnaires from the medical records of all cases and controls. The independent predictors of CAVD were evaluated using multivariate logistic regression analysis. Results The mean age of study participants was 65.3 ± 13.5 years (range, 20–100 years). Of the 536 patients with CAVD, 77 (14.4%) had aortic valve stenosis, 415 (77.4%) had aortic valve calcification, and 44 (8.2%) had bicuspid aortic valve. Multivariate logistic regression analysis revealed that sedentary lifestyle (odds ratio [OR] = 2.517, p = 003), diabetes mellitus (DM) (OR = 1.902, p = 006), high body mass index (BMI ≥ 30 kg/m2) (OR = 1.776, p = 005), good socioeconomic status (OR = 1.724, p = 021), and hypertension (OR = 1.664, p ˂0.001) were independent risk factors for CAVD in the Afghan population. Conclusion It was observed that sedentary lifestyle, diabetes mellitus, high BMI (≥ 30 kg/m2), good socioeconomic status, and hypertension are independent risk factors for the development of CAVD compared to those with a normal aortic valve in the Afghan population.
Finnish university students' satisfaction with e-learning outcomes during the COVID-19 pandemic

PurposeStudents' satisfaction with e-learning outcomes is a vital component in determining the adoption of e-learning systems. Understanding the antecedent factors impacting students' satisfaction with e-learning outcomes helps decision-makers at the higher education to take the necessary actions to enhance the quality of students' performance, especially during the exceptional times, such as the COVID-19 pandemic.Design/methodology/approachThis paper aims to determine and analyse the antecedent factors influencing students' satisfaction with e-learning outcomes during the pandemic. Structural equation modelling (SEM) is used to analysis a proposed research model.FindingsThe SEM results show that digital communities in e-learning, information technology (quality and accessibility) and the online course design quality directly influence students' satisfaction with e-learning outcomes. More interestingly, results show that the COVID-19-related factors (1) awareness of the COVID-19, (2) perceived challenges (negatively) and (3) the educational institutions' preparedness also influence e-learning outcomes.Research limitations/implicationsThe results suggest that the decision-makers at the educational institutions should consider adopting a blended learning system approach to deliver e-learning during the emergency, such as the COVID-19 outbreak situation.Originality/valueThis is one of the first studies in higher education context, which seek to identify the antecedent factors that influence students' satisfaction with e-learning outcomes during the COVID-19 pandemic.