Miracle-dz/UniFAR-FTUs huggingface dataset:
A Hybrid Boost–Flyback/Flyback Microinverter for Photovoltaic Applications

For photovoltaic applications, the flyback microinverter with pseudo-dc-link is popular as a simple topology but brings large transformer turns ratio and thus large leakage inductance, which would deteriorate the converter efficiency. To solve this issue, based on the nonisolated pseudo-dc-link structure, this paper proposed a hybrid boost–flyback/flyback (BF/F) microinverter. This new topology is operated at the BF mode for the most segment of a half grid cycle and the F mode for the rest. During the BF mode, high voltage gain with low voltage stress is easily available in minimized transformer turns ratio. Besides, the leakage energy is recycled and the turn-off voltage spike of the main switch is clamped, as a result of a passive snubber inherently contained in this mode. Given that the BF mode is lack of step-down function, the F mode is developed to regulate the output voltage even for values lower than the input voltage. The operation and characteristic of the hybrid BF/F microinverter in boundary conduction mode are analyzed in detail, and the mathematical expression of reference current is derived theoretically to guarantee high power quality. Finally, a 240 W prototype was implemented to validate the theoretical analysis and the benefits of the proposed topology.
Nurse managers’ views regarding patients’ long waiting time at community health centers in Gauteng Province, South Africa

Background Patients’ long waiting time still exceeds the set target of 120 minutes. As a result, the volume of complaints remains a concern that points to systems inefficiencies. Minimal attention has been given to the experiences of nurse managers regarding patients’ long waiting time Objective To explore and describe the experiences of nurse managers regarding patients’ long waiting time at Community Health Centers (CHCs) in Gauteng Province, South Africa Methods The research applied qualitative exploratory descriptive and contextual design. Non-probability purposive sampling techniques were used to select eight nurse managers. Individual semi-structured interviews were conducted and captured with an audio tape. Tesch’s 8-steps of data analysis were followed to analyze the data. Results Three themes and seven categories emerged from the study: (1) The adverse effects of patients’ long waiting time (early birds to evade long queues, increased patients’ complaints and compromised quality care), (2) Factors that contribute to patients’ long waiting time (records and patient administration system deficiencies, poor time management, patients’ lack of adherence to booking system), (3) Measures to mitigate patients’ long waiting time (embracing decongestion systems to mitigate patients’ overflow at CHC). Conclusion The study recommends the optimal implementation of an appointment system to avert long waiting times. Collaboration between CHCs’ management and clinic committees is encouraged to provide the best solutions to the reduction of patients’ long waiting times. In addition, time management is one area that needs to be improved. A digital record management system can assist in better-sought problems related to filling. Studies are encouraged on a model to enhance collaboration in reduction of patients’ long waiting time.
GIS-MCE based suitability analysis for sustainable estate development in Ede North LGA Osun State, Nigeria

Ideal areas for housing developments that are, for the most part, sustainable, present critical issues in the planning and development of eco-friendly urban settlements. With this in mind and explicitly, Ede North LGA of Osun state was chosen as the case study where a methodological framework for a land suitability analysis was adopted to identify suitable lands for real estate development with sustainability as a focus in the realization of global UN goals. This present study falls within the framework of the Multi-Criteria Evaluation (MCE) analysis, which can be integrated into Geographic Information Systems (GIS) together with the Analytic Hierarchical Process (AHP), useful for decision making in site selection studies. For this purpose, computed relative weights from the pairwise comparisons (AHP) of 5 sub-models, i.e., terrain, environmental, socio-economic, available land and soil factors, were inserted into the suitability analysis function of GIS and combined in a ‘Weighted Sum’ overlay operation to produce a final suitability map on a scale of 1-5 with 5 being the highest preference. Lastly, the ‘Locate Region’ Spatial Analyst tool was applied to the final suitability map to locate three (3) optimum locations to site the estate developments. Conclusively, in view of the analysis and discoveries made in this research, finding optimum locations via the GIS–MCE based land suitability model for future housing development needs may prove highly resourceful. Hence, this study can likewise give a significant direction to future land use changes and practical and cost-effective arrangements in the urban areas where conditions are similar to those in Ede North LGA.
Effect of Indolebutyric Acid on Distribution of 14C-Photosynthate in Softwood Cuttings of ‘Marianna 2624’ Plum1

Treating the bases of ‘Marianna 2624’ plum cuttings with indolebutyric acid (IBA) enhanced rooting and affected the distribution of labeled assimilate. IBA, however, did not significantly affect the uptake of 14CO2 by a single leaf or the proportion of fixed radioactivity that was translocated in 20 hours. Approximately 60% of the translocated 14C remained in the stem portion immediately below the treated leaf, whereas less than 5% reached the basal end. The rest of the activity was recovered in the upper stem. This distribution pattern was present in both control and IBA-treated cuttings, and remained essentially unchanged until callus appeared at the base of the latter group. The base of treated cuttings then began to accumulate an increasingly larger share of translocated 14C. This value eventually reached 6 times that found in unrooted controls. Throughout the study, 87-95% of the radioactivity in the base of either type of cutting was in an ethanol-soluble neutral fraction which contained sucrose, glucose, fructose, and sorbitol. Treatment with IBA increased starch loss in the base of the cutting, while the sugar content rose similarly in both types of cuttings. The time of increased mobilization of photosynthate to the base may be influenced more by the extent of local carbohydrates reserves than by a particular stage of rooting.
A Grid-Supporting Photovoltaic System Implemented by a VSG with Energy Storage

Conventional photovoltaic (PV) systems interfaced by grid-connected inverters fail to support the grid and participate in frequency regulation. Furthermore, reduced system inertia as a result of the integration of conventional PV systems may lead to an increased frequency deviation of the grid for contingencies. In this paper, a grid-supporting PV system, which can provide inertia and participate in frequency regulation through virtual synchronous generator (VSG) technology and an energy storage unit, is proposed. The function of supporting the grid is implemented in a practical PV system through using the presented control scheme and topology. Compared with the conventional PV system, the grid-supporting PV system, behaving as an inertial voltage source like synchronous generators, has the capability of participating in frequency regulation and providing inertia. Moreover, the proposed PV system can mitigate autonomously the power imbalance between generation and consumption, filter the PV power, and operate without the phase-locked loop after initial synchronization. Performance analysis is conducted and the stability constraint is theoretically formulated. The novel PV system is validated on a modified CIGRE benchmark under different cases, being compared with the conventional PV system. The verifications demonstrate the grid support functions of the proposed PV system.
Uniform regularity for the free surface compressible Navier-Stokes equations with or without surface tension

In this paper, we investigate the uniform regularity of solutions to the 3-dimensional isentropic compressible Navier-Stokes system with free surfaces and study the corresponding asymptotic limits of such solutions to that of the compressible Euler system for vanishing viscosity and surface tension. It is shown that there exists an unique strong solution to the free boundary problem for the compressible Navier-Stokes system in a finite time interval which is independent of the viscosity and the surface tension. The solution is uniform bounded both in $W^{1,\infty}$ and a conormal Sobolev space. It is also shown that the boundary layer for the density is weaker than the one for the velocity field. Based on such uniform estimates, the asymptotic limits to the free boundary problem for the ideal compressible Euler system with or without surface tension as both the viscosity and the surface tension tend to zero, are established by a strong convergence argument.
A Program for Valuing Mental Health Lived Experience in Social Work Education

ABSTRACT Participation and involvement of service users, carers, and families into the design, delivery, evaluation, and development of mental health policy and services is now a standard expectation. As social workers are employed in mental health settings, it is vital that graduates understand and ethically engage with mental health consumers, survivors, ex-patients, and family (CSX + F) in a meaningful and authentic manner. We argue this extends to fostering critical understandings of dominant discourses about distress, trauma, diagnosis, and intervention as a routine component of social work education. The Valuing Lived Experience Program (VLEP) described in this article within the Curtin University School of Allied Health aims to meaningfully embed the voices of people with lived experience of mental distress, trauma, and service use into the education of tertiary students and academics. Lived experience education in social work is vitally important and requires appropriate resourcing, clear purpose and principles, and attention to the democratisation of knowledge in order to achieve epistemic justice. In this article, the authors describe and contextualise the VLEP as a contemporary example of how lived experience in social work education can occur and be developed. IMPLICATIONS Meaningful participation of people with mental health lived experience is important to social work education. Lived experience education needs to be underpinned by clear ethical and theoretical principles for teaching and learning. Programs that rigorously engage with lived experience in mental health education can make a positive contribution to critical understandings of mental distress.
Multi-Resin Masked Stereolithography (MSLA) 3D Printing for Rapid and Inexpensive Prototyping of Microfluidic Chips with Integrated Functional Components

Stereolithography based 3D printing of microfluidics for prototyping has gained a lot of attention due to several advantages such as fast production, cost-effectiveness, and versatility over traditional photolithography-based microfabrication techniques. However, existing consumer focused SLA 3D printers struggle to fabricate functional microfluidic devices due to several challenges associated with micron-scale 3D printing. Here, we explore the origins and mechanism of the associated failure modes followed by presenting guidelines to overcome these challenges. The prescribed method works completely with existing consumer class inexpensive SLA printers without any modifications to reliably print PDMS cast microfluidic channels with channel sizes as low as ~75 μm and embedded channels with channel sizes as low ~200 μm. We developed a custom multi-resin formulation by incorporating Polyethylene glycol diacrylate (PEGDA) and Ethylene glycol polyether acrylate (EGPEA) as the monomer units to achieve micron sized printed features with tunable mechanical and optical properties. By incorporating multiple resins with different mechanical properties, we were able to achieve spatial control over the stiffness of the cured resin enabling us to incorporate both flexible and rigid components within a single 3D printed microfluidic chip. We demonstrate the utility of this technique by 3D printing an integrated pressure-actuated pneumatic valve (with flexible cured resin) in an otherwise rigid and clear microfluidic device that can be fabricated in a one-step process from a single CAD file. We also demonstrate the utility of this technique by integrating a fully functional finger-actuated microfluidic pump. The versatility and accessibility of the demonstrated fabrication method have the potential to reduce our reliance on expensive and time-consuming photolithographic techniques for microfluidic chip fabrication and thus drastically lowering our barrier to entry in microfluidics research.
Oxia Planum, Mars, classified using the NOAH-H deep-learning terrain classification system

ABSTRACT We present a map of Oxia Planum, Mars, the landing site for the ExoMars Rover. This shows surface texture and aeolian bedform distribution, classified using a deep learning (DL) system. A hierarchical classification scheme was developed, categorising the surface textures observed at the site. This was then used to train a DL network, the ‘Novelty or Anomaly Hunter – HiRISE’ (NOAH-H). The DL applied the classification scheme across a wider area than could have been mapped manually. The result showed strong agreement with human-mapped areas reserved for validation. The resulting product is presented in two ways, representing the two principle levels of the classification scheme. ‘Descriptive classes’ are purely textural in nature, making them compatible with a machine learning approach. These are then combined into ‘interpretive groups’, broader thematic classes, which provide an interpretation of the landscape. This step allows for a more intuitive analysis of the results by human users.
Strategies for the Biodegradation of Polyfluorinated Compounds

Many cite the strength of C–F bonds for the poor microbial biodegradability of polyfluorinated organic compounds (PFCs). However, commercial PFCs almost invariably contain more functionality than fluorine. The additional functionality provides a weak entry point for reactions that activate C–F bonds and lead to their eventual cleavage. This metabolic activation strategy is common in microbial biodegradation pathways and is observed with aromatic hydrocarbons, chlorinated compounds, phosphonates and many other compounds. Initial metabolic activation precedes critical bond breakage and assimilation of nutrients. A similar strategy with commercial PFCs proceeds via initial attack at the non-fluorinated functionalities: sulfonates, carboxylates, chlorines, phenyl rings, or phosphonates. Metabolic transformation of these non-fluorinated groups can activate the C–F bonds, allowing more facile cleavage than a direct attack on the C–F bonds. Given that virtually all compounds denoted as “PFAS” are not perfluorinated and are not alkanes, it is posited here that considering their individual chemical classes is more useful for both chemical and microbiological considerations of their fate.
Construction and Application of Evaluation Index System of Entrepreneurship Education

Entrepreneurship education evaluation has the function of guiding, motivat-ing and evaluating the development of entrepreneurship education, and the development of effective entrepreneurship education evaluation tools is a hot spot in the field of international entrepreneurship education and evaluation research. This study constructs an evaluation index system of entrepreneurship education in colleges and universities based on Context Evaluation, Input Evaluation, Process Evaluation and Product Evaluation (CIPP) model consisting of 4 primary evaluation indexes, 12 secondary evaluation indexes and 41 descriptive indexes, compiles the questionnaire on the effectiveness of entrepreneurship education implementation in universities, and conducts a survey on the effectiveness of entrepreneurship education for college students in a pilot university in the first round of entrepreneurship education in China as the research object. The questionnaire was tested for reliability using SPSS 25 software, and finally, countermeasures were proposed based on the evaluation results to provide a reference for the research on entrepreneurship education and evaluation in colleges and universities in China.
Guidelines for the Management of COVID-19 (Coronavirus Disease 2019)

The clinical manifestations of COVID-19 vary widely, ranging from asymptomatic/asymptomatic to very severe respiratory distress. Both the body's immune response, both the natural body's immune response and the adaptive body's immune response, play a very important role in the course of COVID-19. Most patients infected with SARS-CoV-2 show symptoms of the respiratory system such as fever, coughing, sneezing, and shortness of breath. The most common symptoms are fever, dry cough, fatigue, and anosmia or ageusia. The management of COVID-19 focuses on isolation, improving the immune system, and handling comorbid patients.
“I don’t mind a bit of poetry”: a reflection on teaching unseen poetry

ABSTRACT This paper reflects on the teaching of the unseen poetry element of the English Literature GCSE in 2022. It explores the author’s reflections on the successes and limitations of using a less structured approach with a single Year 11 class, concluding that the pedagogies outlined were more successful than previous iterations in terms of pupil engagement and preparation for high-stakes assessment. However, the approach could have been improved with even less structure early in the unit.
Corporate social responsibility, electronic word-of-mouth and customer loyalty in Vietnam’s banking sector

This research explored and examined the link between electronic word-of-mouth, corporate social responsibility, and loyalty of 282 customers using banking services in Vietnam (PLS-SEM) through the Partial Least Squares Structural Equation Modeling. The data were gathered using convenience sampling, with a sample of 282 customers who used banking services in Vietnam and interacted with the bank through social media. The survey is intended to include 16 questions separated into two parts: the first part contains 5 demographic questions, and the second part contains 11 questions divided into three sets of factors: corporate social responsibility, electronic word-of-mouth, and loyalty. The survey was emailed to customers using banking services and interacting with banks via social media in Vietnam. According to the findings of the empirical study, there is a direct and indirect link between corporate social responsibility, electronic word-of-mouth, and customer loyalty in Vietnam’s banking sector. The results of empirical research in Vietnam’s banking industry indicate that corporate social responsibility has direct and positive impact on customer loyalty; corporate social responsibility has a direct and positive impact on customer’s word-of-mouth; electronic word-of-mouth has a direct and positive impact on customer loyalty; and finally, corporate social responsibility has an indirect impact on customer loyalty through customer’s electronic word-of-mouth. AcknowledgmentThe author would like to thank all the customers who completed the survey. The author would like to thank all parties and the Banking University of Ho Chi Minh City for their excellent support and assistance in completing this research.
Virological, Serological and Clinical Analysis of Chikungunya Virus Infection in Thai Patients

From 2018 to 2020, the Chikungunya virus (CHIKV) outbreak re-emerged in Thailand with a record of more than 10,000 cases up until the end of 2020. Here, we studied acute CHIKV-infected patients who had presented to the Bangkok Hospital for Tropical Diseases from 2019 to 2020 by assessing the relationship between viral load, clinical features, and serological profile. The results from our study showed that viral load was significantly high in patients with fever, headache, and arthritis. We also determined the neutralizing antibody titer in response to the viral load in patients, and our data support the evidence that an effective neutralizing antibody response against the virus is important for control of the viral load. Moreover, the phylogenetic analysis revealed that the CHIKV strains we studied belonged to the East, Central, and Southern African (ECSA) genotype, of the Indian ocean lineage (IOL), and possessed E1-K211E and E1-I317V mutations. Thus, this study provides insight for a better understanding of CHIKV pathogenesis in acute infection, along with the genomic diversity of the current CHIKV strains circulating in Thailand.
Examination of ADHD Symptom Severity, Depression Symptoms, and Alcohol-Related Negative Consequences in College Students with ADHD

College students with ADHD are at elevated risk for problem drinking behaviors and depression symptoms relative to their peers without ADHD. However, mechanisms underlying these constructs are unclear. This cross-sectional study examines two models: (1) alcohol-related negative consequences account for the covariation between ADHD symptom severity and depression symptoms and (2) depression symptoms account for the covariation between ADHD symptom severity and alcohol-related negative consequences. The sample included 106 college student drinkers with ADHD (Mage = 19.86, SD = 1.4). Results indicated that depression symptoms partially accounted for the covariation between ADHD symptom severity and alcohol-related negative consequences. Additionally, alcohol-related negative consequences partially accounted for the covariation between ADHD symptom severity and depression symptoms. Future directions and clinical implications are discussed such as understanding the bidirectional nature of these relationships longitudinally, improving alcohol and depression-related outcomes, and developing transdiagnostic treatments to address these comorbidities among young adults with ADHD.