Miracle-dz/UniFAR-FTUs huggingface dataset:
The knowledge, attitudes, and perceptions toward the Oxford AstraZeneca COVID-19 vaccine amongst Primary Health care workers in North-Central Trinidad

Aim To determine the effects of knowledge, attitudes, and perceptions of primary care health workers toward receiving the Oxford AstraZeneca vaccine in North Central, Trinidad. Methods A pretested de novo questionnaire containing forty-eight (48) closed ended questions and one (1) open ended question was used to gather data. Descriptive and inferential statistics were used to analyze the data obtained from the questionnaire. These included percentages, means and standard deviations for the descriptive aspect and the Chi-Square test to examine any significant associations. Analysis of Variance (ANOVA) was used to assess any significant differences in means among several categories and the independent samples t-test for assessing any significant difference in means between two categories. Results 273 respondents completed the questionnaire. Most of the participants (72.2%) were female and within the age range 25–36 (56.0%). The mean knowledge score about the AstraZeneca vaccine was 16.28 (SD = 2.28) out of 19 with an overall correct response rate of 79%. 30.4% of participants had a good attitude score and 59.7% had a positive perception toward the AstraZeneca vaccine. There were significant associations between knowledge and marital status (p = 0.001), income level (p = 0.001), education level (p < 0.001), and length of employment (p = 0.041); attitudes and sex (p = 0.01), age (p = 0.04), marital status (p = 0.009), income level (p < 0.001), education level (p = 0.005) and category of staff (p < 0.001); perception and sex (p = 0.002), marital status (p = 0.027), income level (p < 0.001), and category of staff (p < 0.001). Conclusions The main contributors to vaccine hesitancy were inadequate duration of clinical trials and fear of adverse side effects. A significant number of participants (17%) were unwilling to get the vaccine due to lack of information.
Implication of Cellular Senescence in Osteoarthritis: A Study on Equine Synovial Fluid Mesenchymal Stromal Cells

Osteoarthritis (OA) is described as a chronic degenerative disease characterized by the loss of articular cartilage. Senescence is a natural cellular response to stressors. Beneficial in certain conditions, the accumulation of senescent cells has been implicated in the pathophysiology of many diseases associated with aging. Recently, it has been demonstrated that mesenchymal stem/stromal cells isolated from OA patients contain many senescent cells that inhibit cartilage regeneration. However, the link between cellular senescence in MSCs and OA progression is still debated. In this study, we aim to characterize and compare synovial fluid MSCs (sf-MSCs), isolated from OA joints, with healthy sf-MSCs, investigating the senescence hallmarks and how this state could affect cartilage repair. Sf-MSCs were isolated from tibiotarsal joints of healthy and diseased horses with an established diagnosis of OA with an age ranging from 8 to 14 years. Cells were cultured in vitro and characterized for cell proliferation assay, cell cycle analysis, ROS detection assay, ultrastructure analysis, and the expression of senescent markers. To evaluate the influence of senescence on chondrogenic differentiation, OA sf-MSCs were stimulated in vitro for up to 21 days with chondrogenic factors, and the expression of chondrogenic markers was compared with healthy sf-MSCs. Our findings demonstrated the presence of senescent sf-MSCs in OA joints with impaired chondrogenic differentiation abilities, which could have a potential influence on OA progression.
Carbon nanotube field-effect transistor operation at microwave frequencies

A top-gated carbon nanotube (CNT) field-effect transistor (FET) was fabricated on a quartz substrate. We used a novel measurement approach and demonstrated for the first time frequency-independent performance of a CNT FET for frequencies as high as 23GHz. This observed maximum operating frequency represents a significant breakthrough in the realization of carbon nanotube-based electronics for high frequency applications.
Translating in practice: On the role of translation in entrepreneurial discovery processes in Norway

ABSTRACT The article examines a key component of regional smart specialisation strategy, namely the entrepreneurial discovery process (EDP) and how it unfolds in three regions in Norway. The authors seek to understand the interpretation and operationalisation of the EDP by conducting a constructivist thematic analysis of regional strategy documents and associated material in Rogaland, Vestland, and Nordland. They find that while similarities exist in the use of the EDP, the regions differ markedly across several key dimensions, most notably the interpretation of the EDP and its implementation across the regions. To have a better understanding of these differences in a region’s EDP, they propose the integration of translation theory with more conventional theoretical approaches on understanding regional policy differences. The authors shed light on the diffuse understandings of the EDP in practice across regions, thereby providing richer evidence of how the interpretations can differ considerably even within one country, and they conclude that this indicates the relevance of translation theory for future regional comparative studies of smart specialisation.
Acceptance of Smart Technologies in Blended Learning: Perspectives of Chinese Medical Students

Smart technologies are essential in improving higher education teaching and learning. The present study explores the factors that influence students’ behavioural intentions to adopt and use smart technologies in blended learning. Based on the Unified Theory of Acceptance and Use of Technology (UTAUT2) model, a survey of 305 students was conducted to collect data. A structural equation model was applied to analyse the data. The findings show that adopting smart technologies requires appropriate social context and organizational support. Moreover, the data indicated that performance expectancy, effort expectancy, social influence, hedonic motivation, and habit are vital in determining students’ behavioural intention to use smart technologies. However, facilitating conditions and price value were found to have no significant impact on the students’ behavioural intention to use smart technologies. The study contributes to a better understanding of the nexus of blended learning and smart technologies, thus improving students’ experiences in blended learning settings.
CollabGraph: A Graph-Based Collaborative Search Summary Visualization

Currently, the search history in search engines is presented in a list view of some combination of enumerated results by title, URL, or search query. However, this classical list view is not ideal in collaborative search environments as it does not always assist users in understanding collaborators' search history results and the project's status. We present CollabGraph, a system for graph-based summary visualization in collaborative search learning environments. Our system differentiates from existing solutions by visualizing the summary of the collaboration results in a graph and having its core personal knowledge graphs (PKGs) for each user. Our research questions concentrate around the CollabGraph's usefulness, preference, and enhancement of participation of student's and teacher's feedback compared to the list view of search history results. We evaluate our approach with an online questionnaire in six different project-based searching as learning (SaL) scenarios (LSs). The evaluation of users' experience indicates that the CollabGraph is useful, highly likeable, and could benefit users' participation and teacher's feedback by providing more precise insights into the project status. Our approach helps users better perceive about everyone's work, and it is a highly preferable feature alongside the list view. In addition, the results demonstrate that graph summary visualizations, such as the CollabGraph, are more suitable for closed-end scenarios and collaborative projects with many participants.
Computation of suboptimal Nash strategies for a stochastic differential game under partial observation

Consider the random motion of two points Me and Mp in an open and bounded domain Δ0 in the plane. Each of the velocities, u = (u1, u2) of Me and v = (v1,v2) of Mp , is perturbed by a corresponding ℝ2-valued gaussian white noise. Two cases are dealt with : (A) Each of the points can observe only its own location ; (B) Me can observe only its own location, but Mp can observe the location of both points. Let Δ T and Δ f be two disjoint closed subsets of Δ0. Denote by ℰ1 and ℰ2 the following events : ℰ1 = { Mp intercepts Me in Δ f before Me reaches tho set ΔT and before either Me or Mp has left Δ0}, and ℰ2 = { Me reaches the set Δ T before being intercepted by Mp , and before either Mp or Me has left Δ0}. The problem dealt with hero is to find a strategy (u∗, v∗) such that, in the sense of a Nash equilibrium point, the probabilities Prob (ℰ1) and Prob (ℰ2) will both be maximized on a given class of (u,v)- inadmissible strategies. Sufficient conditions on weak optimal Nash equilibrium point strategies are deri.
Prophylaxis of Antifungal Drugs against Systemic Fungemia induced by Oral Candidiasis in Mice

Oral mucositis is highly prevalent among the elderly, for whom oral care is often difficult. Oral mucositis, such as candidiasis, can induce systemic fungemia. Antifungal prophylaxis may be useful in such cases to prevent systemic fungemia; however, studies on this are limited. The objective of this study was to demonstrate the effectiveness of antifungal prophylaxis to prevent systemic Candida dissemination compared to oral care using a mice model. Oral candidiasis was induced using chemotherapy and inoculation with C. albicans in 8-week-old male mice. Group A was given oral care, Group B was orally administered an antifungal drug, Group C was intravenously administered an antifungal drug, and Group D was used as the negative control group. Macroscopic features of the tongue surface, colony forming units (CFU) on the tongue, and blood culture for C. albicans were evaluated. CFU was significantly higher in Group A than in Groups B and C. The oral care group, but not the groups administered antifungal agents, showed significantly higher positive numbers of animals with C. albicans in the blood as compared to the control group, indicating the effectiveness of antifungal prophylaxis over oral care. Antifungal prophylaxis may be an option for the prevention of systemic fungemia in individuals with difficulty in oral care.
Preparing for Risks and Building Resilience

ABSTRACT Journalists confront terror and war to report and document what is happening. Covering traumatic events is dangerous for the reporters on the scene and may leave them with distress responses. The aim of this study is to investigate the coping strategies journalists use to deal with danger and traumatic stress and to build resilience. Through in-depth interviews with journalists covering crisis and violent events, the article looks at the physical, practical and trauma aspects of crisis journalism, and contributes to the complex understanding of risk and resilience for journalists. The study is based on interviews with nine reporters from five countries. Between them, they have covered several conflicts, terror attacks and wars. The study shows that they use a variety of strategies. Memories from unpredictable assignments stick with them. However, eight would cover traumatic events again, and the majority have experienced post-traumatic growth. My results show that informal peer support is crucial, but media organizations have a long way to go to ensure adequate support.
Enzymatically-Crosslinked Gelatin Hydrogels with Nanostructured Architecture and Self-Healing Performance for Potential Use as Wound Dressings

Development of natural protein-based hydrogels with self-healing performance and tunable physical properties has attracted increased attention owing to their wide potential not only in the pharmaceutical field, but also in wounds management. This work reports the development of a versatile hydrogel based on enzymatically-crosslinked gelatin and nanogels loaded with amoxicillin (Amox), an antibiotic used in wound infections. The transglutaminase (TGase)-crosslinked hydrogels and encapsulating nanogels were formed rapidly through enzymatic crosslinking and self-assembly interactions in mild conditions. The nanogels formed through the self-assemble of maleoyl-chitosan (MAC5) and polyaspartic acid (PAS) may have positive influence on the self-healing capacity and drug distribution within the hydrogel network through the interactions established between gelatin and gel-like nanocarriers. The physicochemical properties of the enzymatically-crosslinked hydrogels, such as internal structure, swelling and degradation behavior, were studied. In addition, the Amox release studies indicated a rapid release when the pH of the medium decreased, which represents a favorable characteristic for use in the healing of infected wounds. It was further observed through the in vitro and in vivo biocompatibility assays that the optimized scaffolds have great potential to be used as wound dressings.
Relaxation of a trapped magnetic field in a 100 m long class MgB2 solenoid coil in persistent current mode operation

This paper reports on the relaxation of a trapped magnetic field in a MgB2 solenoid coil in persistent current (PC) mode operation. For the PC mode test, we fabricated a closed-loop circuit with a small MgB2 test coil, a persistent current switch (PCS) and some superconducting joints. The MgB2 test coil was fabricated using a wind-and-react method employing a 96 m long powder-in-tube processed MgB2 wire. The critical current Ic of the coil reached 88 A at 4.2 K without an external field. The resistance of the fabricated joints between the MgB2 and NbTi conductors (MgB2–NbTi) was estimated to be less than 1.0 × 10−13 Ω. In PC mode with a closed-loop circuit, a magnetic field of 0.68 T was trapped for more than 8 h. These results demonstrate the possible use of the MgB2 conductor for applications in fields such as MRI and NMR superconducting magnets.
Effects of a three-dimensional hill on the wake characteristics of a model wind turbine

The spatial evolution of a turbine wake downwind of a three-dimensional sinusoidal hill is studied using large-eddy simulations and wind tunnel measurements. The computed flow fields behind the hill show good agreement with wind tunnel measurements. Three different heights of the hill, i.e., hhill = zh − 0.5D, ≈ zh and =zh + 0.5D (where zh is the turbine hub height and D is the diameter of the turbine rotor), were considered. The effect of the hill turbine spacing was investigated through a comparative analysis with the turbine wake results in the undisturbed turbulent boundary layer. It is observed that the turbine wakes downwind of the hill with hhill ≈ zh and hhill = zh + 0.5D recover faster because of the increased entrainment of ambient flow into the turbine wake, which is due to the enhanced turbulent transport in both spanwise and vertical directions. In comparison with the turbine only case, significant increases in the turbulence kinetic energy (TKE) in the turbine wake are observed for the hill-.
The Curcumin Derivative GT863 Protects Cell Membranes in Cytotoxicity by Aβ Oligomers

In Alzheimer’s disease (AD), accumulation of amyloid β-protein (Aβ) is one of the major mechanisms causing neuronal cell damage. Disruption of cell membranes by Aβ has been hypothesized to be the important event associated with neurotoxicity in AD. Curcumin has been shown to reduce Aβ-induced toxicity; however, due to its low bioavailability, clinical trials showed no remarkable effect on cognitive function. As a result, GT863, a derivative of curcumin with higher bioavailability, was synthesized. The purpose of this study is to clarify the mechanism of the protective action of GT863 against the neurotoxicity of highly toxic Aβ oligomers (Aβo), which include high-molecular-weight (HMW) Aβo, mainly composed of protofibrils in human neuroblastoma SH-SY5Y cells, focusing on the cell membrane. The effect of GT863 (1 μM) on Aβo-induced membrane damage was assessed by phospholipid peroxidation of the membrane, membrane fluidity, membrane phase state, membrane potential, membrane resistance, and changes in intracellular Ca2+ ([Ca2+]i). GT863 inhibited the Aβo-induced increase in plasma-membrane phospholipid peroxidation, decreased membrane fluidity and resistance, and decreased excessive [Ca2+]i influx, showing cytoprotective effects. The effects of GT863 on cell membranes may contribute in part to its neuroprotective effects against Aβo-induced toxicity. GT863 may be developed as a prophylactic agent for AD by targeting inhibition of membrane disruption caused by Aβo exposure.
Mathematical Expeditions: Chronicles by the Explorers

1 Geometry: The Parallel Postulate. - 1.1 Introduction. - 1.2 Euclid's Parallel Postulate. - 1.3 Legendre's Attempts to Prove the Parallel Postulate. - 1.4 Lobachevskian Geometry. - 1.5 Poincare's Euclidean Model for Non-Euclidean Geometry. - 2 Set Theory: Taming the Infinite. - 2.1 Introduction. - 2.2 Bolzano's Paradoxes of the Infinite. - 2.3 Cantor's Infinite Numbers. - 2.4 Zermelo's Axiomatization. - 3 Analysis: Calculating Areas and Volumes. - 3.1 Introduction. - 3.2 Archimedes' Quadrature of the Parabola. - 3.3 Archimedes' Method. - 3.4 Cavalieri Calculates Areas of Higher Parabolas. - 3.5 Leibniz's Fundamental Theorem of Calculus. - 3.6 Cauchy's Rigorization of Calculus. - 3.7 Robinson Resurrects Infinitesimals. - 3.8 Appendix on Infinite Series. - 4 Number Theory: Fermat's Last Theorem. - 4.1 Introduction. - 4.2 Euclid's Classification of Pythagorean Triples. - 4.3 Euler's Solution for Exponent Four. - 4.4 Germain's General Approach. - 4.5 Kummer and the Dawn of Algebraic Number Theory. - 4.6 Appendix on Congruences. - 5 Algebra: The Search for an Elusive Formula. - 5.1 Introduction. - 5.2 Euclid's Application of Areas and Quadratic Equations. - 5.3 Cardano's Solution of the Cubic. - 5.4 Lagrange's Theory of Equations. - 5.5 Galois Ends the Story. - References. - Credits.
Herbig-Haro Jets from Orbiting Sources

The origin of the wiggles detected in the trajectory of Herbig-Haro (HH) jets, microjets, and radio continuum jets from young stellar objects is investigated. We propose that the orbital motion of a binary stellar system is the cause of these outflow morphologies. The analytical trajectories of a ballistic jet ejected by a source moving along a circular orbit have been derived, and their validity has been checked through a comparison with three-dimensional gasdynamic simulations. We propose a simple method to calculate the mass of the outflow source and the orbital parameters using observational measurements (i.e., the opening angle of the wiggling jet pattern, the separation between successive wiggles, the jet velocity, and the orientation of the outflow with respect to the plane of the sky), and we apply it to the DG Tau microjet, HH 47, and the Serpens radio continuum jet. For these three objects we obtain orbital parameters and masses that are reasonable for pre-main-sequence binaries. From this result we conclude that the observed wiggles (of these three outflows) can indeed be interpreted in terms of a model of an outflow ejected from a source with an orbital motion.
Factors Influencing the Intention to Use PeduliLindungi Application Among Indonesians During COVID-19

A COVID-19 pandemic struck a major section of the world's population in 2020, causing governments in various countries to put in place a range of tracking measures to identify and locate persons afflicted with the virus. While the government installs PeduliLindungi, a tracking application, there are always concerns over the reliability, personal information and data privacy recorded in the system. People might also be reluctant to use technology because of the ease of use. The purpose of this research is then to investigate the factors that have an impact on the likelihood that Indonesians will use the PeduliLindungi application. The UTAUT2 Theory was used as the overarching framework for this research. This theory takes into account a number of different aspects, some of which are performance expectancy, effort expectancy, social impact, an enabling environment, habit, and perceived privacy credibility. Purposive sampling, as well as a quantitative (survey) technique, were used in this study. In this technique, online questionnaires were issued to Indonesian residents who were aware of or had heard about the PeduliLindungi monitoring initiative, yielding 89 valid responses. The data show that the intention to use the PeduliLindungi application has a favorable and strong relationship with four variables. Social influence, facilitating conditions, habit, and perceived privacy credibility are examples of these characteristics. However, it was discovered that performance and effort expectations had no association with the intention to use the specific tracking instrument. This work adds to the field of media information technology studies by presenting the concept of perceived privacy credibility as a key construct for developing the UTAUT2 Theory in respect to the Internet of Things (IoT). This theory provides relevant ways for tracking suspicious patients for government authorities, medical professionals, and healthcare providers.
Locating Partial Discharges in Power Transformers with Convolutional Iterative Filtering

The most common source of transformer failure is in the insulation, and the most prevalent warning signal for insulation weakness is partial discharge (PD). Locating the positions of these partial discharges would help repair the transformer to prevent failures. This work investigates algorithms that could be deployed to locate the position of a PD event using data from ultra-high frequency (UHF) sensors inside the transformer. These algorithms typically proceed in two steps: first determining the signal arrival time, and then locating the position based on time differences. This paper reviews available methods for each task and then propose new algorithms: a convolutional iterative filter with thresholding (CIFT) to determine the signal arrival time and a reference table of travel times to resolve the source location. The effectiveness of these algorithms are tested with a set of laboratory-triggered PD events and two sets of simulated PD events inside transformers in production use. Tests show the new approach provides more accurate locations than the best-known data analysis algorithms, and the difference is particularly large, 3.7X, when the signal sources are far from sensors.
Convergence theorems for Banach space valued integrable multifunctions.

In this work we generalize a result of Kato on the pointwise behavior of a P weakly convergent sequence in the Lebesgue-Bochner spaces LX(fi) (I _< p _< (R)). Then we use that result to prove Fatou's type lemmata and dominated convergence theorems for the Aumann integral of Banach space valued measurable multifunctions. Analogous con- vergence results are also proved for the sets of integrable selectors of those multifunctions. In the process of proving those convergence theorems we make some useful observations concerning the Kuratowski-Mosco convergence of sets.